/* ============================================================
   파워튜터 (powtutor.com) 공용 스타일시트
   모든 정적 HTML 페이지(홈, pSEO 페이지)에서 공통으로 불러와 씁니다.
   사용법: 각 html의 <head> 안에
   <link rel="stylesheet" href="/style.css">
   ============================================================ */

/* 폰트(Noto Sans KR)는 각 html의 <head>에서 Google Fonts <link>로 불러옵니다.
   preconnect + stylesheet 링크를 head에 넣어주세요:
   <link rel="preconnect" href="https://fonts.googleapis.com" />
   <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
   <link href="https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;500;700&display=swap" rel="stylesheet" /> */

:root{
  --bg:#F3FAF9;
  --card:#fff;
  --ink:#12292A;
  --muted:#5C7A7B;
  --acc:#0ea5c8;      /* 사이트 theme-color 기준 */
  --acc-dk:#0b7c99;
  --acc-soft:#DEF3F8;
  --sub:#10a88f;
  --sub-soft:#E1F6EE;
  --sub-dk:#0c7d68;
  --line:#DCEEEC;
  --seobg:#FAFDFD;
  --good:#10a88f;
  --good-soft:#E1F6EE;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Noto Sans KR','Apple SD Gothic Neo',sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.76;
  word-break:keep-all;
  -webkit-text-size-adjust:100%;
  padding-bottom:calc(76px + env(safe-area-inset-bottom));
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}

/* ---------- 상단 네비게이션 ---------- */
.topbar{padding:20px 0;background:#fff;border-bottom:1px solid var(--line)}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.brand{font-weight:800;letter-spacing:-.03em;font-size:19px;display:flex;align-items:center;gap:6px}
.brand .ico{font-size:18px}
.brand span{color:var(--acc)}
.nav-right{display:flex;align-items:center;gap:18px;font-size:13.5px;font-weight:700;color:var(--muted)}
.nav-right .updated{font-size:12px;color:var(--muted);font-weight:600}
.nav-right .btn{padding:10px 18px;font-size:13.5px}

/* ---------- 버튼 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:16px 26px;border-radius:100px;font-weight:700;font-size:15px;
  cursor:pointer;border:none;font-family:inherit;
}
.btn-p{background:var(--acc);color:#fff;box-shadow:0 10px 24px rgba(14,165,200,.24)}
.btn-g{background:#fff;color:var(--ink);border:2px solid var(--line)}
.cta-row{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 히어로 ---------- */
.hero{padding:64px 0 60px;text-align:center;background:linear-gradient(180deg,#fff, var(--bg) 70%)}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;
  color:var(--acc-dk);background:var(--acc-soft);padding:8px 16px;border-radius:100px;margin-bottom:22px;
}
.hero h1{
  font-weight:800;letter-spacing:-.035em;font-size:clamp(28px,5vw,44px);
  line-height:1.4;margin-bottom:18px;max-width:680px;margin-left:auto;margin-right:auto;
}
.hero p.lead{
  font-size:16px;color:var(--muted);max-width:520px;margin:0 auto 30px;
}
.hero .cta-row{justify-content:center}

/* ---------- 통계 바 ---------- */
.stats-row{
  display:flex;justify-content:center;gap:14px;flex-wrap:wrap;
  max-width:820px;margin:44px auto 0;
}
.stats-row .stat{
  flex:1 1 150px;background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:22px 16px;text-align:center;
}
.stats-row .stat strong{display:block;font-size:23px;font-weight:800;color:var(--acc-dk);letter-spacing:-.02em}
.stats-row .stat span{font-size:12.5px;color:var(--muted);font-weight:600}

/* ---------- 섹션 공통 ---------- */
section{padding:64px 0}
.sec-head{text-align:center;margin-bottom:38px}
.sec-head h2{font-weight:800;letter-spacing:-.03em;font-size:clamp(22px,3.6vw,28px);margin-bottom:10px}
.sec-head p{font-size:14.5px;color:var(--muted)}

/* ---------- 언어별 과외 찾기 카드 ---------- */
.lang-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.lang-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px 22px;
  display:flex;flex-direction:column;gap:10px;transition:transform .15s,box-shadow .15s;
}
.lang-card:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(14,165,200,.14);border-color:var(--acc)}
.lang-card .flag{font-size:26px}
.lang-card h3{font-size:16.5px;font-weight:800;letter-spacing:-.02em}
.lang-card p{font-size:13px;color:var(--muted)}
.lang-card .go{margin-top:6px;font-size:13px;font-weight:800;color:var(--acc-dk)}

/* ---------- 3(4)단계 프로세스 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.step-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px 18px;position:relative;
}
.step-card .num{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;
  background:var(--acc-soft);color:var(--acc-dk);font-weight:800;font-size:15px;margin-bottom:14px;
}
.step-card.last .num{background:var(--sub-soft);color:var(--sub-dk)}
.step-card h3{font-size:15px;font-weight:800;margin-bottom:6px;letter-spacing:-.02em}
.step-card p{font-size:12.5px;color:var(--muted);line-height:1.7}
.step-arrow{
  position:absolute;top:50%;right:-11px;transform:translateY(-50%);
  width:22px;height:22px;border-radius:50%;background:var(--acc);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:12px;z-index:2;
}

/* ---------- CTA 배너 ---------- */
.cta-band{
  background:var(--ink);border-radius:26px;padding:52px 30px;text-align:center;color:#fff;
}
.cta-band h2{font-size:clamp(21px,3.6vw,27px);font-weight:800;letter-spacing:-.03em;margin-bottom:10px}
.cta-band p{color:#BFE3EA;font-size:14px;margin-bottom:26px}
.cta-band .btn-p{background:var(--sub);box-shadow:0 10px 24px rgba(16,168,143,.3)}

/* ---------- FAQ ---------- */
.faq-list{max-width:680px;margin:0 auto;display:grid;gap:10px}
.faq-list details{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px;
}
.faq-list summary{
  font-size:14.5px;font-weight:800;cursor:pointer;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:10px;
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:'▾';color:var(--acc);font-size:13px;transition:transform .15s}
.faq-list details[open] summary::after{transform:rotate(180deg)}
.faq-list p{font-size:13.5px;color:var(--muted);margin-top:12px;line-height:1.8}

/* ---------- 푸터 ---------- */
footer{background:#fff;border-top:1px solid var(--line);padding:44px 0 30px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;margin-bottom:26px}
.foot-brand .brand{margin-bottom:10px}
.foot-brand p{font-size:13px;color:var(--muted);line-height:1.8}
.foot-col h4{font-size:12.5px;font-weight:800;color:var(--muted);margin-bottom:12px}
.foot-col a{display:block;font-size:13.5px;color:var(--ink);margin-bottom:9px}
.ft-copy{font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding-top:18px;text-align:center}

/* ---------- 하단 고정 CTA & 연락 버튼 ---------- */
.sticky-cta{
  position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--line);
  padding:12px 20px calc(12px + env(safe-area-inset-bottom));display:flex;gap:10px;
  box-shadow:0 -6px 20px rgba(0,0,0,.08);z-index:40;
}
.sticky-cta .sc-in{max-width:1080px;margin:0 auto;display:flex;gap:10px;width:100%}
.sticky-cta button{
  flex:1;text-align:center;padding:13px;border-radius:100px;font-weight:700;font-size:14px;
  border:none;font-family:inherit;cursor:pointer;
}
.sticky-cta .a1{background:var(--bg);color:var(--ink)}
.sticky-cta .a2{background:var(--acc);color:#fff}
.float-contact{position:fixed;right:18px;bottom:86px;display:flex;flex-direction:column;gap:10px;z-index:41}
.float-contact a{
  width:46px;height:46px;border-radius:50%;background:#fff;box-shadow:0 6px 16px rgba(0,0,0,.14);
  display:flex;align-items:center;justify-content:center;font-size:19px;
}

/* ---------- 반응형 ---------- */
@media(max-width:820px){
  .lang-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .step-arrow{display:none}
  .foot-grid{grid-template-columns:1fr}
}
@media(max-width:600px){
  .steps{grid-template-columns:1fr}
  .stats-row{gap:10px}
  .stats-row .stat{flex:1 1 45%}
}