/* SQLD ADsP 시험 대비: the app's own palette (pipeline/design.json). Blue = SQLD, violet = ADsP,
   amber = the 40% 과락 line, green = 정답, navy = the code block. */
:root{
  --paper:#F6F4EF;--surface:#FFFFFF;--sunken:#EFECE5;--line:#E3DED3;
  --ink:#1A2030;--muted:#5B6375;
  --sqld:#2F6FDE;--adsp:#7457E0;--amber:#E39A2D;--ok:#1F9D66;--bad:#E0574A;
  --navy:#151B28;--navy-2:#1C2436;--code-text:#E6EDF3;--code-kw:#7DB3FF;--code-lit:#F3C969;
  --on-navy:#EEF1F7;--on-navy-muted:#A3ACBE;--sqld-on-navy:#6E9BF2;--adsp-on-navy:#A792F5;
  --radius:20px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root{
    --paper:#0E1320;--surface:#182033;--sunken:#121A2A;--line:#26304A;
    --ink:#EEF1F7;--muted:#9BA4B6;
    --sqld:#5B8DF0;--adsp:#9C85F2;--amber:#F2B54E;--ok:#3CC48A;--bad:#F07468;
    --navy:#0A0F19;--navy-2:#121A2A;
    color-scheme:dark;
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);
  font-family:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic",system-ui,sans-serif;
  font-size:16px;line-height:1.65;word-break:keep-all;overflow-wrap:break-word;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--sqld);text-underline-offset:3px}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
@media (min-width:720px){.wrap{padding:0 24px}}
.num{font-variant-numeric:tabular-nums}
.sqld{color:var(--sqld)}.adsp{color:var(--adsp)}

/* header */
.top{position:sticky;top:0;z-index:20;background:var(--paper);background:color-mix(in srgb,var(--paper) 88%,transparent);
  backdrop-filter:saturate(1.4) blur(12px);-webkit-backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);text-decoration:none;letter-spacing:-.01em;white-space:nowrap}
.brand img{width:30px;height:30px;border-radius:8px}
.top nav{display:flex;gap:18px;overflow-x:auto;scrollbar-width:none}
.top nav::-webkit-scrollbar{display:none}
.top nav a{color:var(--muted);font-weight:600;font-size:15px;text-decoration:none;white-space:nowrap}
.top nav a:hover{color:var(--ink)}
@media (max-width:640px){.top nav .opt{display:none}}

/* hero */
.hero{padding:44px 0 56px}
.hero .grid{display:grid;gap:36px;align-items:center}
@media (min-width:900px){.hero{padding:72px 0 80px}.hero .grid{grid-template-columns:1.05fr .95fr;gap:48px}}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.chip{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:5px 12px;font-size:13px;font-weight:700;line-height:1.3}
.chip.sqld{background:color-mix(in srgb,var(--sqld) 12%,transparent);color:var(--sqld)}
.chip.adsp{background:color-mix(in srgb,var(--adsp) 13%,transparent);color:var(--adsp)}
.chip.plain{background:var(--sunken);color:var(--muted)}
h1{font-size:clamp(32px,7.4vw,54px);line-height:1.18;letter-spacing:-.03em;font-weight:800;margin:0 0 18px}
.lede{font-size:clamp(17px,2.4vw,20px);color:var(--muted);margin:0 0 26px;max-width:34em}
.btns{display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding:0 22px;border-radius:14px;
  font-weight:700;font-size:16px;text-decoration:none;border:0;cursor:pointer}
.btn.primary{background:var(--ink);color:var(--paper)}
.btn.ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.btn .soon{font-size:12px;font-weight:700;padding:2px 8px;border-radius:999px;background:var(--amber);color:#1A2030}
.btn svg{flex:none}
.small{font-size:14px;color:var(--muted)}
.hero .small{margin-top:14px}

/* the executed-SQL card */
.run{background:var(--navy);color:var(--code-text);border-radius:24px;padding:20px;box-shadow:0 24px 60px -24px rgba(21,27,40,.55);max-width:520px;width:100%;justify-self:center}
.run .q{display:flex;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--on-navy-muted);font-weight:600;margin-bottom:12px}
.run .q b{color:var(--sqld-on-navy);background:rgba(110,155,242,.14);padding:3px 9px;border-radius:999px}
.run pre{margin:0 0 14px;background:var(--navy-2);border-radius:14px;padding:14px 16px;overflow-x:auto;
  font:500 14px/1.6 ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace}
.kw{color:var(--code-kw)}.lit{color:var(--code-lit)}
.run .verdict{display:flex;align-items:center;gap:8px;color:#3CC48A;font-weight:700;font-size:14px;margin:0 0 10px}
.run .res{background:var(--navy-2);border-radius:14px;padding:12px 14px}
.run .res .h{display:flex;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--on-navy-muted);margin-bottom:6px}
.run .res .h span:last-child{color:#3CC48A;background:rgba(60,196,138,.14);padding:2px 9px;border-radius:999px;font-weight:700}
.run table{border-collapse:collapse;width:100%;font:500 14px/1.7 ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace}
.run th{text-align:left;color:var(--code-kw);font-weight:600;padding:2px 0}
.run td{padding:1px 0;color:var(--code-text)}

/* next sittings */
.next{display:grid;gap:12px;margin-top:4px}
@media (min-width:720px){.next{grid-template-columns:1fr 1fr}}
.sit{display:flex;gap:14px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:14px 16px;text-decoration:none;color:var(--ink)}
.sit .d{flex:none;width:58px;height:58px;border-radius:14px;display:grid;place-items:center;text-align:center;color:#fff;font-weight:800;line-height:1.1;font-size:13px}
.sit .d b{display:block;font-size:20px}
.sit.sqld .d{background:var(--sqld)}.sit.adsp .d{background:var(--adsp)}
.sit strong{display:block;font-size:16px}
.sit span{font-size:14px;color:var(--muted)}

/* sections */
section{padding:56px 0}
@media (min-width:900px){section{padding:80px 0}}
h2{font-size:clamp(26px,4.6vw,38px);line-height:1.25;letter-spacing:-.025em;font-weight:800;margin:0 0 12px}
.intro{color:var(--muted);font-size:17px;margin:0 0 32px;max-width:40em}
.band{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

.features{display:grid;gap:14px}
@media (min-width:640px){.features{grid-template-columns:1fr 1fr}}
@media (min-width:980px){.features{grid-template-columns:repeat(3,1fr)}}
.feat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.band .feat{background:var(--paper)}
.feat .ic{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;margin-bottom:12px;color:#fff}
.feat .ic.b{background:var(--sqld)}.feat .ic.v{background:var(--adsp)}.feat .ic.a{background:var(--amber);color:#1A2030}.feat .ic.g{background:var(--ok)}.feat .ic.n{background:var(--navy);color:var(--code-kw)}
.feat h3{font-size:18px;line-height:1.35;margin:0 0 6px;letter-spacing:-.01em}
.feat p{margin:0;color:var(--muted);font-size:15.5px}
.feat.wide{grid-column:1/-1}
.floor{position:relative;height:10px;border-radius:6px;background:var(--sunken);margin:14px 0 6px;overflow:visible}
.floor i{position:absolute;inset:0 auto 0 0;border-radius:6px}
.floor u{position:absolute;top:-4px;bottom:-4px;left:40%;width:2px;background:var(--amber);border-radius:2px}
.floor-l{display:flex;justify-content:space-between;font-size:13px;color:var(--muted)}

/* screenshots on the navy band */
.shots{background:var(--navy);color:var(--on-navy)}
.shots h2{color:var(--on-navy)}
.shots .intro{color:var(--on-navy-muted)}
.strip{display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 16px 18px;margin:0 -16px;scrollbar-width:thin}
.strip figure{flex:none;width:min(62vw,250px);margin:0;scroll-snap-align:center}
.strip img{border-radius:18px;width:100%;aspect-ratio:1320/2868;background:#1C2436}
@media (min-width:1080px){.strip{justify-content:space-between;overflow:visible;margin:0;padding:4px 0 0}.strip figure{width:19%}}

/* honest note */
.honest{display:grid;gap:18px;background:var(--surface);border:1px solid var(--line);border-left:5px solid var(--amber);border-radius:var(--radius);padding:24px}
.honest h2{font-size:clamp(22px,3.6vw,30px)}
.honest p{margin:0;color:var(--muted)}

/* free vs pro */
.plans{display:grid;gap:16px}
@media (min-width:820px){.plans{grid-template-columns:1fr 1fr}}
.plan{border-radius:24px;padding:26px;border:1px solid var(--line);background:var(--surface)}
.plan.pro{background:var(--navy);color:var(--on-navy);border-color:transparent}
.plan .tag{font-size:13px;font-weight:800;letter-spacing:.02em;color:var(--muted)}
.plan.pro .tag{color:var(--code-lit)}
.plan h3{font-size:24px;margin:4px 0 6px;letter-spacing:-.02em}
.plan .sub{margin:0 0 16px;color:var(--muted)}
.plan.pro .sub{color:var(--on-navy-muted)}
.plan ul{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.plan li{display:flex;gap:10px;align-items:flex-start}
.plan li svg{flex:none;margin-top:4px}

/* faq */
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:16px;margin:0 0 10px;padding:0 18px}
.faq summary{cursor:pointer;list-style:none;font-weight:700;padding:16px 28px 16px 0;position:relative;font-size:16.5px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:0;top:12px;font-size:22px;font-weight:500;color:var(--muted)}
.faq details[open] summary::after{content:"−"}
.faq details p{margin:0 0 16px;color:var(--muted)}

/* closing call */
.closing{text-align:center}
.closing .btns{justify-content:center}
.closing img{width:84px;height:84px;border-radius:20px;margin:0 auto 18px}

/* article (guide, legal) */
.doc{padding:36px 0 64px}
.doc .wrap{max-width:780px}
.crumbs{font-size:14px;color:var(--muted);margin:0 0 18px}
.crumbs a{color:var(--muted)}
.doc h1{font-size:clamp(28px,6vw,42px)}
.doc h2{font-size:clamp(22px,4vw,28px);margin:44px 0 12px}
.doc h3{font-size:19px;margin:28px 0 8px}
.doc p,.doc li{color:var(--ink)}
.doc .meta{color:var(--muted);font-size:14px;margin:-6px 0 26px}
.doc ul,.doc ol{padding-left:1.25em}
.doc li{margin:4px 0}
.tbl{overflow-x:auto;margin:16px 0 8px;border:1px solid var(--line);border-radius:16px;background:var(--surface)}
.tbl table{border-collapse:collapse;width:100%;font-variant-numeric:tabular-nums}
.tbl table.floor-t td:first-child{white-space:normal}
.tbl th,.tbl td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);font-size:15px;vertical-align:top}
.tbl td:first-child{white-space:nowrap}
@media (min-width:720px){.tbl th,.tbl td{padding:12px 16px}}
.tbl tr:last-child td{border-bottom:0}
.tbl th{font-size:13.5px;color:var(--muted);font-weight:700;background:var(--sunken)}
.tbl tr.next-up td{background:color-mix(in srgb,var(--amber) 12%,transparent)}
.badge{display:inline-block;font-size:12px;font-weight:800;padding:2px 8px;border-radius:999px;margin-left:6px;vertical-align:2px}
.badge.done{background:var(--sunken);color:var(--muted)}
.badge.up{background:var(--amber);color:#1A2030}
.note{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px 18px;margin:20px 0;color:var(--muted)}
.cta-card{margin:40px 0 0;background:var(--navy);color:var(--on-navy);border-radius:24px;padding:26px}
.cta-card h2{margin:0 0 8px;color:var(--on-navy);font-size:24px}
.cta-card p{color:var(--on-navy-muted);margin:0 0 18px}
.cta-card .btn.primary{background:var(--on-navy);color:#151B28}

/* footer */
footer{border-top:1px solid var(--line);padding:30px 0 40px;font-size:14px;color:var(--muted)}
footer .wrap{display:grid;gap:12px}
footer nav{display:flex;gap:16px;flex-wrap:wrap}
footer a{color:var(--muted)}
@media (prefers-color-scheme:dark){
  .feat .ic.n{background:#22304F}
  .run{border:1px solid var(--line)}
}