/* ============================================================
   KINS 공유 디자인 시스템 — www.kins.kr
   홈(index.html) · 제품 카탈로그(/products/) · 제품 랜딩 페이지 공용.
   개별 페이지는 이 파일을 <link>로 불러오고, 페이지 고유 스타일만
   인라인 <style>로 추가한다.
   향후 영어 페이지(/en/) 추가 시 hreflang(ko/en/x-default)도 함께 도입.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;700;900&family=Montserrat:wght@400;700;900&display=swap');

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --navy: #050d1f; --dark: #0a1628; --card: #0f1f3d;
  --cyan: #00c8ff; --cyan2: #0af5c8; --white: #f0f6ff;
  --gray: #8a9bb8; --border: rgba(0,200,255,0.15);
}

html { scroll-behavior: smooth; }
body { font-family: 'Noto Sans KR', -apple-system, sans-serif; background: var(--navy); color: var(--white); overflow-x: hidden; }
a { color: inherit; text-decoration: none; }

/* ── NAV ───────────────────────────────────────────────── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 999;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 6%; background: rgba(5,13,31,0.9);
  backdrop-filter: blur(12px); border-bottom: 1px solid var(--border);
}
.logo img { height: 36px; width: auto; display: block; }
.nav-links { display: flex; gap: 28px; list-style: none; align-items: center; }
.nav-links a { color: var(--gray); text-decoration: none; font-size: .88rem; font-weight: 500; transition: color .3s; }
.nav-links a:hover, .nav-links a.active { color: var(--cyan); }
.nav-cta { background: transparent; border: 1.5px solid var(--cyan); color: var(--cyan); padding: 8px 22px; border-radius: 4px; font-size: .85rem; font-weight: 700; cursor: pointer; text-decoration: none; transition: all .3s; white-space: nowrap; }
.nav-cta:hover { background: var(--cyan); color: var(--navy); }
.nav-right { display: flex; align-items: center; gap: 22px; }
/* 모바일 햄버거 */
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--cyan); transition: transform .3s, opacity .3s; }

/* ── HERO (홈) ─────────────────────────────────────────── */
#hero { min-height: 100vh; display: flex; align-items: center; padding: 120px 6% 80px; position: relative; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: 0; background: radial-gradient(ellipse 80% 60% at 70% 50%, rgba(0,200,255,.08) 0%, transparent 70%), radial-gradient(ellipse 50% 80% at 10% 80%, rgba(10,245,200,.05) 0%, transparent 60%); }
.grid-lines { position: absolute; inset: 0; z-index: 0; background-image: linear-gradient(rgba(0,200,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(0,200,255,.04) 1px, transparent 1px); background-size: 60px 60px; }
.hero-content { position: relative; z-index: 1; max-width: 760px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(0,200,255,.1); border: 1px solid var(--border); padding: 6px 16px; border-radius: 20px; font-size: .8rem; color: var(--cyan); margin-bottom: 28px; font-weight: 500; }
.hero-badge::before { content: ''; width: 6px; height: 6px; background: var(--cyan); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.5;transform:scale(1.4)} }
h1 { font-family: 'Montserrat', 'Noto Sans KR', sans-serif; font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 900; line-height: 1.15; margin-bottom: 12px; }
h1 .hl { color: var(--cyan); } h1 .hl2 { color: var(--cyan2); }
.hero-sub { font-size: clamp(.95rem, 2vw, 1.15rem); color: var(--gray); margin: 20px 0 36px; line-height: 1.8; font-weight: 300; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 40px; margin-top: 60px; flex-wrap: wrap; }
.stat-item { text-align: left; }
.stat-num { font-family: 'Montserrat', sans-serif; font-size: 2rem; font-weight: 900; color: var(--cyan); line-height: 1; }
.stat-label { font-size: .75rem; color: var(--gray); margin-top: 4px; }

/* ── HERO (제품 랜딩) ──────────────────────────────────── */
.hero { min-height: 72vh; display: flex; align-items: center; position: relative; overflow: hidden; padding: 0 6%; background: linear-gradient(160deg, #050d1f, #091425); }
.hero .hero-bg { background: radial-gradient(ellipse 70% 80% at 78% 50%, rgba(0,200,255,.08), transparent 70%); }
.hero-inner { position: relative; z-index: 1; max-width: 920px; padding: 130px 0 70px; }
.hero-tag { display: inline-flex; align-items: center; gap: 8px; background: rgba(0,200,255,.1); border: 1px solid var(--border); padding: 6px 16px; border-radius: 20px; font-size: .78rem; color: var(--cyan); font-weight: 600; letter-spacing: 1px; margin-bottom: 22px; }
.hero-tag::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan2); box-shadow: 0 0 10px var(--cyan2); }
.lead { font-size: 1.05rem; color: var(--gray); line-height: 1.85; max-width: 700px; margin-bottom: 30px; }
.cta-row { display: flex; gap: 14px; flex-wrap: wrap; }

/* ── BUTTONS ───────────────────────────────────────────── */
.btn-primary { background: linear-gradient(135deg, var(--cyan), var(--cyan2)); color: var(--navy); padding: 14px 30px; border-radius: 6px; font-weight: 700; font-size: .95rem; text-decoration: none; border: none; cursor: pointer; transition: transform .2s, box-shadow .2s; box-shadow: 0 0 24px rgba(0,200,255,.3); display: inline-block; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 36px rgba(0,200,255,.5); }
.btn-outline, .btn-ghost { border: 1.5px solid var(--border); color: var(--white); padding: 14px 28px; border-radius: 6px; font-weight: 600; font-size: .93rem; text-decoration: none; transition: all .3s; background: transparent; display: inline-block; }
.btn-outline:hover, .btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }

/* ── SECTION ───────────────────────────────────────────── */
section { padding: 100px 6%; }
section.hero { padding: 0 6%; }
.section-tag { font-size: .75rem; font-weight: 700; color: var(--cyan); letter-spacing: 3px; text-transform: uppercase; margin-bottom: 12px; }
.section-title { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 700; line-height: 1.3; margin-bottom: 16px; }
.section-desc { color: var(--gray); font-size: .95rem; line-height: 1.8; max-width: 600px; }
.divider { width: 48px; height: 3px; background: linear-gradient(90deg, var(--cyan), var(--cyan2)); margin: 16px 0 32px; border-radius: 2px; }
.sec-title { font-size: 1.9rem; font-weight: 800; margin-bottom: 10px; text-align: center; }
.sec-sub { color: var(--gray); text-align: center; margin-bottom: 44px; font-size: .95rem; max-width: 640px; margin-left: auto; margin-right: auto; }
.block { padding: 80px 6%; max-width: 1100px; margin: 0 auto; }

/* ── ABOUT ─────────────────────────────────────────────── */
#about { background: var(--dark); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.timeline { display: flex; flex-direction: column; gap: 0; margin-top: 32px; }
.tl-item { display: flex; gap: 20px; align-items: flex-start; position: relative; padding-bottom: 28px; }
.tl-left { display: flex; flex-direction: column; align-items: center; min-width: 50px; }
.tl-dot { width: 11px; height: 11px; background: var(--cyan); border-radius: 50%; flex-shrink: 0; box-shadow: 0 0 10px var(--cyan); margin-top: 3px; }
.tl-vline { width: 1px; flex: 1; background: var(--border); margin-top: 6px; min-height: 28px; }
.tl-item:last-child .tl-vline { display: none; }
.tl-year { font-family: 'Montserrat', sans-serif; font-weight: 700; color: var(--cyan); font-size: .82rem; white-space: nowrap; padding-top: 1px; }
.tl-text { font-size: .86rem; color: var(--gray); line-height: 1.65; }
.tl-text strong { color: var(--white); display: block; margin-bottom: 3px; font-size: .9rem; }
.about-right { display: flex; flex-direction: column; gap: 20px; }
.info-card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 28px; position: relative; overflow: hidden; }
.info-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, var(--cyan), var(--cyan2)); }
.info-card-label { font-size: .72rem; color: var(--cyan); font-weight: 700; letter-spacing: 2px; margin-bottom: 18px; display: block; }
.edu-items { display: flex; flex-direction: column; gap: 12px; }
.edu-item { font-size: .85rem; color: var(--gray); line-height: 1.6; padding-left: 14px; border-left: 2px solid var(--border); }
.edu-item strong { color: var(--white); display: block; margin-bottom: 2px; }
.keyword-grid { display: flex; flex-wrap: wrap; gap: 10px; }
.keyword { background: rgba(0,200,255,.06); border: 1px solid var(--border); color: var(--gray); font-size: .8rem; padding: 6px 14px; border-radius: 6px; transition: all .3s; }
.keyword:hover { color: var(--cyan); border-color: rgba(0,200,255,.3); }

/* ── CARDS (서비스 · 제품 카드 그리드) ────────────────── */
.services-header { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 48px; flex-wrap: wrap; gap: 20px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 32px 28px; transition: transform .3s, border-color .3s, box-shadow .3s; position: relative; overflow: hidden; }
.card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, var(--cyan), var(--cyan2)); opacity: 0; transition: opacity .3s; }
.card:hover { transform: translateY(-6px); border-color: rgba(0,200,255,.4); box-shadow: 0 20px 40px rgba(0,0,0,.3); }
.card:hover::before { opacity: 1; }
.card-icon, .card .ic { font-size: 2.1rem; margin-bottom: 18px; }
.card-title, .card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 12px; }
.card-desc, .card p { font-size: .85rem; color: var(--gray); line-height: 1.75; }
.card-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.tag { background: rgba(0,200,255,.08); border: 1px solid rgba(0,200,255,.2); color: var(--cyan); font-size: .72rem; padding: 3px 10px; border-radius: 20px; font-weight: 500; }
.card-link { display: inline-flex; align-items: center; gap: 5px; margin-top: 16px; color: var(--cyan); font-size: .8rem; font-weight: 700; text-decoration: none; }

/* 제품 기능 그리드 (auto-fill) */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; }
.grid .card { padding: 26px; }

/* ── 제품 카탈로그 (상태 배지 포함 클릭형 카드) ───────── */
.prod-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 22px; max-width: 1100px; margin: 0 auto; }
.prod-card { display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 30px 28px; position: relative; overflow: hidden; transition: transform .25s, border-color .25s, box-shadow .25s; }
.prod-card:hover { transform: translateY(-6px); border-color: rgba(0,200,255,.45); box-shadow: 0 20px 44px rgba(0,0,0,.35); }
.prod-card .ic { font-size: 2rem; margin-bottom: 14px; }
.prod-card h3 { font-size: 1.18rem; font-weight: 800; margin-bottom: 8px; }
.prod-card .pc-sub { font-size: .9rem; color: var(--gray); line-height: 1.7; flex: 1; }
.prod-card .card-tags { margin-top: 18px; }
.prod-card .pc-go { margin-top: 18px; color: var(--cyan); font-size: .82rem; font-weight: 700; }
.prod-card.placeholder { border-style: dashed; background: rgba(15,31,61,.4); }

/* 상태 배지 */
.badges { position: absolute; top: 18px; right: 18px; display: flex; flex-direction: column; gap: 6px; align-items: flex-end; }
.status-badge { font-size: .68rem; font-weight: 700; padding: 4px 11px; border-radius: 20px; letter-spacing: .3px; white-space: nowrap; }
.sb-demo { background: rgba(10,245,200,.14); color: var(--cyan2); border: 1px solid rgba(10,245,200,.35); }
.sb-available { background: rgba(0,200,255,.12); color: var(--cyan); border: 1px solid rgba(0,200,255,.3); }
.sb-inquiry { background: rgba(138,155,184,.12); color: var(--gray); border: 1px solid rgba(138,155,184,.3); }
.sb-soon { background: rgba(255,196,0,.1); color: #ffd24d; border: 1px solid rgba(255,196,0,.3); }
.legend { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-bottom: 44px; font-size: .8rem; color: var(--gray); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }

/* ── 빵부스러기(breadcrumb) ───────────────────────────── */
.crumbs { max-width: 1100px; margin: 0 auto; padding: 100px 6% 0; font-size: .82rem; color: var(--gray); }
.crumbs a { color: var(--gray); }
.crumbs a:hover { color: var(--cyan); }
.crumbs span { color: var(--white); }

/* ── 동작 방식 STEPS ──────────────────────────────────── */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.step { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 26px; position: relative; }
.step .n { font-family: 'Montserrat', sans-serif; font-weight: 900; color: var(--cyan); font-size: 1.3rem; margin-bottom: 8px; }
.step h4 { font-size: 1rem; margin-bottom: 6px; }
.step p { font-size: .85rem; color: var(--gray); line-height: 1.6; }

/* ── 오픈소스 기반(OSS credits) ───────────────────────── */
.oss-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; max-width: 980px; margin: 0 auto; }
.oss-item { background: rgba(255,255,255,.03); border: 1px solid var(--border); border-radius: 12px; padding: 18px 20px; }
.oss-item strong { display: block; color: var(--white); font-size: .92rem; margin-bottom: 4px; }
.oss-item span { font-size: .78rem; color: var(--gray); line-height: 1.55; }

/* ── 배너 / 고지 ──────────────────────────────────────── */
.banner { background: linear-gradient(135deg, rgba(0,200,255,.08), rgba(10,245,200,.05)); border: 1px solid var(--border); border-radius: 16px; padding: 46px; text-align: center; max-width: 1100px; margin: 0 auto; }
.notice { font-size: .82rem; color: var(--gray); text-align: center; margin-top: 30px; line-height: 1.7; }

/* ── TRACK RECORD ─────────────────────────────────────── */
#track { background: var(--dark); }
.track-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 48px; }
.track-card { background: var(--navy); border: 1px solid var(--border); border-radius: 12px; padding: 24px 26px; display: flex; gap: 16px; align-items: flex-start; transition: border-color .3s; }
.track-card:hover { border-color: rgba(0,200,255,.35); }
.track-icon { font-size: 1.5rem; flex-shrink: 0; margin-top: 2px; }
.track-title { font-size: .92rem; font-weight: 700; margin-bottom: 6px; }
.track-desc { font-size: .82rem; color: var(--gray); line-height: 1.65; }

/* ── LECTURE ──────────────────────────────────────────── */
.lec-header { margin-bottom: 48px; }
.lec-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.lec-block { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 32px; }
.lec-block-title { font-size: .8rem; color: var(--cyan); font-weight: 700; letter-spacing: 2px; margin-bottom: 20px; }
.lec-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.lec-tag { background: rgba(255,255,255,.04); border: 1px solid var(--border); color: var(--white); font-size: .8rem; padding: 6px 14px; border-radius: 6px; }
.org-list { display: flex; flex-direction: column; gap: 10px; }
.org-item { font-size: .85rem; color: var(--gray); padding: 10px 16px; background: rgba(255,255,255,.03); border-radius: 8px; border-left: 2px solid var(--border); transition: border-color .3s; }
.org-item:hover { border-color: var(--cyan); color: var(--white); }

/* ── WHY ──────────────────────────────────────────────── */
#why { background: var(--dark); }
.why-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.why-items { display: flex; flex-direction: column; gap: 28px; }
.why-item { display: flex; gap: 20px; align-items: flex-start; }
.why-num { font-family: 'Montserrat', sans-serif; font-size: 2rem; font-weight: 900; color: rgba(0,200,255,.2); line-height: 1; min-width: 36px; }
.why-item h4 { font-size: .95rem; font-weight: 700; margin-bottom: 6px; }
.why-item p { font-size: .85rem; color: var(--gray); line-height: 1.7; }
.why-visual { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 40px; text-align: center; }
.big-num { font-family: 'Montserrat', sans-serif; font-size: 4.5rem; font-weight: 900; color: var(--cyan); line-height: 1; }
.big-label { font-size: .85rem; color: var(--gray); margin-top: 8px; }

/* ── CONTACT ──────────────────────────────────────────── */
#contact { background: linear-gradient(135deg, var(--dark) 0%, #061128 100%); text-align: center; position: relative; overflow: hidden; }
#contact::before { content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); width: 600px; height: 400px; border-radius: 50%; background: radial-gradient(circle, rgba(0,200,255,.07) 0%, transparent 70%); }
.contact-desc { color: var(--gray); font-size: 1rem; max-width: 540px; margin: 0 auto 36px; line-height: 1.8; }
.contact-email { display: inline-flex; align-items: center; gap: 10px; color: var(--cyan); font-size: 1.1rem; text-decoration: none; font-weight: 700; border-bottom: 1px solid rgba(0,200,255,.3); padding-bottom: 4px; transition: border-color .3s; }
.contact-email:hover { border-color: var(--cyan); }
/* 제품별 빠른 문의 버튼 */
.inquiry-row { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; max-width: 720px; margin: 0 auto 36px; }
.inquiry-btn { background: rgba(0,200,255,.06); border: 1px solid var(--border); color: var(--white); padding: 12px 20px; border-radius: 8px; font-size: .88rem; font-weight: 600; transition: all .3s; }
.inquiry-btn:hover { border-color: var(--cyan); color: var(--cyan); background: rgba(0,200,255,.12); }
.ceo-info { margin-top: 40px; color: var(--gray); font-size: .85rem; line-height: 1.8; }
.ceo-info strong { color: var(--white); }

/* ── FOOTER ───────────────────────────────────────────── */
footer { background: #030a18; padding: 40px 6%; text-align: center; border-top: 1px solid var(--border); }
footer p { color: var(--gray); font-size: .8rem; line-height: 1.8; }
footer a { color: var(--cyan); }
.footer-logo { font-family: 'Montserrat', sans-serif; font-weight: 900; font-size: 1.2rem; color: var(--cyan); letter-spacing: 3px; margin-bottom: 12px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; justify-content: center; margin-bottom: 16px; font-size: .82rem; }
.footer-links a { color: var(--gray); }
.footer-links a:hover { color: var(--cyan); }

/* ── RESPONSIVE ───────────────────────────────────────── */
@media (max-width: 900px) {
  .about-grid, .why-grid, .lec-grid, .track-grid { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .lec-block[style] { grid-column: auto !important; }
  .shot-grid { grid-template-columns: 1fr !important; }
  .nav-toggle { display: flex; }
  .nav-right { gap: 14px; }
  .nav-links {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: rgba(5,13,31,0.98); border-bottom: 1px solid var(--border);
    padding: 8px 6% 18px; display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links li { padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,.04); }
  .hero-stats { gap: 24px; }
}