/* =====================================================================
   iql.css — IQL 제품 사이트 디자인 시스템 (iql.ablest.co.kr)
   ablest 브랜드 자산(Pretendard, 블루 #328FE1) 기반 독자 디자인.
   ===================================================================== */
@import url("/fonts/pretendard.css");

:root{
  /* 브랜드 (ablest tokens.css 값 재사용) */
  --blue:#328FE1; --blue-d:#1F6DB8; --blue-l:#5EA8E8;
  --grad-from:#2E55C8; --grad-to:#4DB8D4;
  --cyan:#4DB8D4;
  --grad:linear-gradient(120deg,var(--grad-from) 0%,var(--grad-to) 100%);

  /* 뉴트럴 (라이트 본문) */
  --ink:#141922; --ink-2:#3a4452; --mute:#5b6675; --faint:#8a94a2;
  --bg:#ffffff; --bg-2:#f5f8fc; --bg-3:#eaf1f9;
  --line:#e4eaf1; --line-2:#eef3f8;

  /* 다크 (히어로·코드·푸터) */
  --dark:#0c1524; --dark-2:#122036; --dark-3:#1b2c46;
  --dark-line:rgba(255,255,255,.10);
  --on-dark:#e9eef6; --on-dark-mute:#9fb0c7;

  /* 코드 신택스 */
  --code-bg:#0e1a2b; --code-ink:#dbe6f5; --code-k:#6fc3ff; --code-t:#7fe0c4;
  --code-s:#f2c17d; --code-c:#6b839f; --code-n:#c9a7f0;

  --mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --sans:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Malgun Gothic","Apple SD Gothic Neo",system-ui,sans-serif;

  --wrap:1160px; --radius:14px; --radius-s:10px;
  --shadow:0 1px 2px rgba(16,32,58,.04),0 8px 30px rgba(16,32,58,.06);
  --shadow-lg:0 20px 60px rgba(16,32,58,.16);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);
     font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;}
img,svg{max-width:100%;}
a{color:var(--blue-d);text-decoration:none;}
a:hover{text-decoration:underline;}
h1,h2,h3,h4{letter-spacing:-.02em;line-height:1.18;margin:0;}
code,kbd{font-family:var(--mono);}
::selection{background:rgba(50,143,225,.22);}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px;}
.eyebrow{font-size:12.5px;font-weight:800;letter-spacing:.15em;text-transform:uppercase;color:var(--blue-d);margin:0 0 14px;}
.eyebrow.on-dark{color:var(--cyan);}
.section{padding:84px 0;border-top:1px solid var(--line-2);}
.section.tight{padding:56px 0;}
.section-head{max-width:760px;margin:0 0 40px;}
.section-head h2{font-size:clamp(26px,3.4vw,36px);font-weight:800;margin:0 0 14px;}
.section-head p{font-size:18px;color:var(--mute);margin:0;}
.center{text-align:center;margin-left:auto;margin-right:auto;}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;
     padding:12px 22px;border-radius:10px;border:1px solid transparent;cursor:pointer;transition:.16s;}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 6px 18px rgba(50,143,225,.32);}
.btn-primary:hover{background:var(--blue-d);color:#fff;}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue-d);}
.btn-ghost.on-dark{color:var(--on-dark);border-color:var(--dark-line);}
.btn-ghost.on-dark:hover{border-color:var(--cyan);color:#fff;}
.btn-lg{padding:14px 28px;font-size:16px;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.82);
     backdrop-filter:saturate(1.5) blur(12px);border-bottom:1px solid var(--line);}
.site-header .bar{display:flex;align-items:center;gap:26px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--ink);letter-spacing:-.03em;}
.brand:hover{text-decoration:none;}
.brand img{height:22px;width:auto;display:block;}
.brand .tag{font-weight:800;color:var(--blue-d);}
.nav{display:flex;gap:24px;margin-left:8px;}
.nav a{color:var(--ink-2);font-size:15px;font-weight:500;}
.nav a:hover{color:var(--blue-d);text-decoration:none;}
.header-cta{margin-left:auto;display:flex;align-items:center;gap:14px;}
.header-cta a{font-size:14.5px;}
.hamburger{display:none;background:none;border:0;cursor:pointer;padding:8px;}
.hamburger span{display:block;width:22px;height:2px;background:var(--ink);margin:4px 0;border-radius:2px;transition:.2s;}

/* ---------- hero (dark band) ---------- */
.hero{position:relative;background:var(--dark);color:var(--on-dark);overflow:hidden;}
.hero::before{content:"";position:absolute;inset:0;
     background:
       radial-gradient(1100px 480px at 78% -8%,rgba(77,184,212,.20),transparent 60%),
       radial-gradient(760px 420px at 8% 110%,rgba(46,85,200,.28),transparent 60%);
     pointer-events:none;}
.hero-grid-bg{position:absolute;inset:0;opacity:.5;
     background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
     background-size:26px 26px;mask-image:linear-gradient(180deg,#000 0%,transparent 82%);pointer-events:none;}
.hero .wrap{position:relative;padding:96px 24px 90px;display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;}
.hero h1{font-size:clamp(32px,4.6vw,52px);font-weight:800;letter-spacing:-.03em;margin:0 0 20px;}
.hero h1 .accent{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.hero .sub{font-size:19px;line-height:1.6;color:var(--on-dark-mute);max-width:56ch;margin:0 0 30px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-meta{font-size:13.5px;color:var(--on-dark-mute);display:flex;flex-wrap:wrap;gap:8px 20px;}
.hero-visual{display:flex;align-items:center;justify-content:center;}
.hero-visual img{width:100%;border-radius:16px;border:1px solid rgba(255,255,255,.10);
  box-shadow:0 24px 60px rgba(0,0,0,.45),0 0 0 1px rgba(77,184,212,.10);object-fit:cover;aspect-ratio:16/11;}
.hero-visual svg{width:100%;max-width:440px;height:auto;filter:drop-shadow(0 12px 40px rgba(77,184,212,.18));}
.hero-meta b{color:#fff;font-weight:600;}

/* ---------- code blocks ---------- */
pre.code{background:var(--code-bg);color:var(--code-ink);border:1px solid rgba(255,255,255,.08);
     border-radius:12px;padding:20px 22px;overflow-x:auto;font-family:var(--mono);
     font-size:13.5px;line-height:1.7;margin:0;box-shadow:var(--shadow);}
pre.code.sm{font-size:12.5px;padding:16px 18px;}
.code .k{color:var(--code-k);font-weight:600;}
.code .t{color:var(--code-t);}
.code .s{color:var(--code-s);}
.code .c{color:var(--code-c);font-style:italic;}
.code .n{color:#c9a7f0;}
.code-frame{position:relative;}
.code-frame .cap{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--faint);
     font-family:var(--mono);margin-bottom:8px;}
.code-frame .cap .dot{width:9px;height:9px;border-radius:50%;background:#e0574f;box-shadow:16px 0 0 #e8b53f,32px 0 0 #58c46a;margin-right:22px;}
.copy-btn{position:absolute;top:12px;right:12px;background:rgba(255,255,255,.08);color:var(--on-dark-mute);
     border:1px solid rgba(255,255,255,.12);border-radius:7px;font-size:11.5px;padding:5px 9px;cursor:pointer;transition:.15s;}
.copy-btn:hover{background:rgba(255,255,255,.16);color:#fff;}

/* ---------- query comparison tabs ---------- */
.qc{background:var(--bg-2);border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow);}
.qc-tabs{display:flex;gap:2px;background:var(--bg-3);padding:6px;border-bottom:1px solid var(--line);}
.qc-tab{flex:1;text-align:center;padding:11px 14px;border-radius:9px;font-weight:600;font-size:14.5px;
     color:var(--mute);background:transparent;border:0;cursor:pointer;transition:.15s;}
.qc-tab:hover{color:var(--ink);}
.qc-tab.active{background:#fff;color:var(--blue-d);box-shadow:var(--shadow);}
.qc-tab .lbl{display:block;font-size:11px;font-weight:700;letter-spacing:.04em;color:var(--faint);text-transform:uppercase;margin-bottom:2px;}
.qc-tab.active .lbl{color:var(--blue);}
.qc-panel{display:none;padding:22px;}
.qc-panel.active{display:block;}
.qc-panel .note{margin:14px 2px 0;font-size:14px;color:var(--mute);}
.qc-panel .note b{color:var(--ink);}

/* ---------- feature cards ---------- */
.grid{display:grid;gap:20px;}
.g2{grid-template-columns:repeat(2,1fr);}
.g3{grid-template-columns:repeat(3,1fr);}
.g4{grid-template-columns:repeat(4,1fr);}
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.16s;}
.card.hover:hover{border-color:var(--blue-l);box-shadow:var(--shadow);transform:translateY(-2px);}
.card .ic{width:42px;height:42px;border-radius:11px;background:var(--bg-3);color:var(--blue-d);
     display:flex;align-items:center;justify-content:center;margin-bottom:14px;}
.card .ic svg{width:22px;height:22px;}
.card h3{font-size:17.5px;font-weight:700;margin:0 0 8px;}
.card p{font-size:14.5px;color:var(--mute);margin:0;}
.card .num{font-family:var(--mono);color:var(--blue);font-weight:700;font-size:13px;}

/* feature split (text + code) */
.split{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center;}
.split.wide-code{grid-template-columns:.9fr 1.1fr;}
.split h3{font-size:22px;font-weight:800;margin:0 0 12px;}
.split p{color:var(--mute);margin:0 0 12px;}

/* pills */
.pills{display:flex;flex-wrap:wrap;gap:10px;}
.pill{border:1px solid var(--line);background:var(--bg);color:var(--ink-2);border-radius:999px;
     padding:8px 16px;font-size:14px;font-weight:600;}
.pill.accent{border-color:var(--blue);color:var(--blue-d);background:rgba(50,143,225,.06);}

/* callout / tip */
.callout{background:rgba(50,143,225,.06);border:1px solid rgba(50,143,225,.20);border-radius:12px;
     padding:18px 22px;font-size:15px;color:var(--ink-2);}
.callout b{color:var(--blue-d);}
.tip{border:1px solid var(--line);border-left:3px solid var(--blue);border-radius:8px;
     background:var(--bg);padding:12px 16px;font-size:14px;color:var(--mute);}
.tip b{color:var(--blue-d);}

/* tables */
.tbl-scroll{overflow-x:auto;}
table.t{width:100%;border-collapse:collapse;font-size:14px;background:var(--bg);
     border:1px solid var(--line);border-radius:12px;overflow:hidden;}
table.t th,table.t td{text-align:left;padding:12px 15px;border-bottom:1px solid var(--line-2);vertical-align:top;}
table.t th{background:var(--bg-2);font-weight:700;font-size:13px;color:var(--ink-2);}
table.t tr:last-child td{border-bottom:0;}
.ok{color:#1f9d64;font-weight:700;} .no{color:#c2453f;font-weight:700;}

/* clean list */
ul.clean{list-style:none;padding:0;margin:12px 0 0;}
ul.clean li{position:relative;padding-left:22px;margin:9px 0;color:var(--mute);font-size:15px;}
ul.clean li::before{content:"";position:absolute;left:2px;top:10px;width:8px;height:8px;border-radius:2px;background:var(--blue);}
ul.clean li b{color:var(--ink);}

/* strip / cta band */
.band{background:var(--dark);color:var(--on-dark);position:relative;overflow:hidden;}
.band::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 300px at 80% 0,rgba(77,184,212,.20),transparent 60%);}
.band .wrap{position:relative;padding:70px 24px;text-align:center;}
.band h2{font-size:clamp(24px,3.2vw,34px);font-weight:800;margin:0 0 14px;}
.band p{color:var(--on-dark-mute);font-size:17px;margin:0 0 26px;}
.band .hero-cta{justify-content:center;}

/* logos/stack row */
.stack-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.stack-chip{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:10px;
     padding:9px 15px;font-weight:600;font-size:14px;color:var(--ink-2);background:var(--bg);}
.stack-chip .d{width:8px;height:8px;border-radius:50%;background:var(--blue);}

/* ---------- docs layout ---------- */
.docs{display:grid;grid-template-columns:250px 1fr;gap:44px;align-items:start;max-width:var(--wrap);margin:0 auto;padding:40px 24px 90px;}
.docs-toc{position:sticky;top:84px;align-self:start;font-size:14px;max-height:calc(100vh - 110px);overflow:auto;}
.docs-toc .grp{font-size:11.5px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin:18px 0 8px;}
.docs-toc a{display:block;color:var(--mute);padding:5px 10px;border-radius:7px;border-left:2px solid transparent;}
.docs-toc a:hover{color:var(--blue-d);background:var(--bg-2);text-decoration:none;}
.docs-toc a.active{color:var(--blue-d);border-left-color:var(--blue);background:rgba(50,143,225,.06);font-weight:600;}
.docs-body{min-width:0;}
.docs-body section{padding:26px 0;border-top:1px solid var(--line-2);scroll-margin-top:84px;}
.docs-body section:first-child{border-top:0;padding-top:0;}
.docs-body h2{font-size:26px;font-weight:800;margin:0 0 10px;}
.docs-body h3{font-size:17px;font-weight:700;margin:22px 0 8px;}
.docs-body p{color:var(--ink-2);margin:0 0 14px;}
.docs-body pre.code{margin:12px 0;}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:var(--on-dark-mute);padding:56px 0 34px;}
.site-footer .cols{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:30px;}
.site-footer h5{color:#fff;font-size:13px;font-weight:700;letter-spacing:.04em;margin:0 0 14px;text-transform:uppercase;}
.site-footer ul{list-style:none;padding:0;margin:0;}
.site-footer li{margin:9px 0;}
.site-footer a{color:var(--on-dark-mute);font-size:14px;}
.site-footer a:hover{color:#fff;text-decoration:none;}
.site-footer .brand{color:#fff;margin-bottom:12px;}
.site-footer .desc{font-size:14px;line-height:1.7;max-width:34ch;}
.site-footer .bottom{border-top:1px solid var(--dark-line);margin-top:40px;padding-top:22px;
     display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;font-size:13px;color:var(--faint);}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .hero .wrap{grid-template-columns:1fr;gap:34px;padding:70px 24px 64px;}
  .split,.split.wide-code{grid-template-columns:1fr;}
  .g3,.g4{grid-template-columns:repeat(2,1fr);}
  .site-footer .cols{grid-template-columns:1fr 1fr;}
  .docs{grid-template-columns:1fr;}
  .docs-toc{position:static;max-height:none;border:1px solid var(--line);border-radius:12px;padding:12px;margin-bottom:20px;}
  .nav{display:none;}
  .hamburger{display:block;margin-left:auto;}
  .header-cta{display:none;}
  .site-header.open .nav{display:flex;position:absolute;top:64px;left:0;right:0;flex-direction:column;
     background:#fff;border-bottom:1px solid var(--line);padding:14px 24px;gap:6px;}
  .site-header.open .nav a{padding:10px 6px;border-bottom:1px solid var(--line-2);}
}
@media (max-width:560px){
  .g2,.g3,.g4{grid-template-columns:1fr;}
  .qc-tab .lbl{display:none;}
  .site-footer .cols{grid-template-columns:1fr;}
}