/* =========================================================
   glossa — 공통 스타일
   색과 글꼴의 기본값은 아래 :root 에서 바꿉니다.
   ========================================================= */
:root{
  --bg:#F2F2EE; --surface:#FFFFFF; --sunk:#E9E9E4;
  --ink:#000000; --ink-2:#4A4B55; --ink-3:#8B8C96;
  --line:#D8D8D1; --line-2:#C2C2BA;
  --accent:#1F3BFF; --accent-ink:#1A33D9; --accent-soft:#E4E8FF;
  --display:"Unbounded","Noto Kufi Arabic","Noto Sans SC","Noto Sans JP",system-ui,sans-serif;
  --sans:"Pretendard Variable","Pretendard",-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic",sans-serif;
  --shadow:0 1px 0 rgba(0,0,0,.04),0 22px 44px -26px rgba(20,24,60,.35);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0E0F14; --surface:#171922; --sunk:#12131A;
    --ink:#F2F2EE; --ink-2:#B4B5C0; --ink-3:#7B7D8A;
    --line:#2A2C36; --line-2:#3A3D4A;
    --accent:#8C9BFF; --accent-ink:#A6B1FF; --accent-soft:#1E2340;
    --shadow:0 1px 0 rgba(0,0,0,.3),0 22px 44px -26px rgba(0,0,0,.8);
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0E0F14; --surface:#171922; --sunk:#12131A;
  --ink:#F2F2EE; --ink-2:#B4B5C0; --ink-3:#7B7D8A;
  --line:#2A2C36; --line-2:#3A3D4A;
  --accent:#8C9BFF; --accent-ink:#A6B1FF; --accent-soft:#1E2340;
  --shadow:0 1px 0 rgba(0,0,0,.3),0 22px 44px -26px rgba(0,0,0,.8);
  color-scheme:dark;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:80px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.6;word-break:keep-all;overflow-wrap:break-word;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.vh{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
[lang="ar"]{font-family:"Noto Kufi Arabic",var(--sans)}
[lang="zh"]{font-family:"Noto Sans SC",var(--sans)}
[lang="ja"]{font-family:"Noto Sans JP",var(--sans)}

/* 상단 바 */
.bar{position:sticky;top:0;z-index:30;background:var(--bg);background:color-mix(in srgb,var(--bg) 84%,transparent);-webkit-backdrop-filter:saturate(1.3) blur(14px);backdrop-filter:saturate(1.3) blur(14px)}
.bar-in{max-width:1280px;margin:0 auto;height:64px;padding:0 24px;display:flex;align-items:center;gap:8px}
.mark{margin-right:auto;font-family:"Unbounded",var(--sans);font-weight:700;font-size:1.28rem;letter-spacing:-.04em}
.mark span{color:var(--accent)}
.mark.small{margin:0;font-size:1rem}
.bar-link{padding:8px 12px;border-radius:10px;font-size:.92rem;font-weight:600;color:var(--ink-2)}
.bar-link:hover{color:var(--ink);background:var(--sunk)}
.icon-btn{display:inline-grid;place-items:center;width:40px;height:40px;border:0;border-radius:12px;background:transparent;color:var(--ink-2);cursor:pointer}
.icon-btn:hover{background:var(--sunk);color:var(--ink)}
.icon-btn svg{width:20px;height:20px}

/* ================= 첫 화면 ================= */
.stage{max-width:1280px;margin:0 auto;padding:76px 24px 34px;text-align:center}
.brand-big{margin:0;font-family:"Unbounded",var(--sans);font-weight:700;font-size:clamp(3rem,8vw,5.6rem);line-height:1;letter-spacing:-.055em}
.brand-big span{color:var(--accent)}
.lede{margin:24px auto 0;max-width:32em;font-size:clamp(1.12rem,1.9vw,1.42rem);line-height:1.65;color:var(--ink-2)}
/* 첫 화면: 큰 로고가 보이는 동안에는 상단 바의 작은 로고를 감춤 */
.mark{transition:opacity .25s}
.mark.tucked{opacity:0;pointer-events:none}
@media (max-width:640px){.stage{padding-top:52px;padding-bottom:22px}}

/* 이어서 학습 */
.resume{max-width:1280px;margin:0 auto;padding:8px 24px 36px}
.resume[hidden]{display:none}
.resume h2,.index h2{margin:0;font-size:1.05rem;font-weight:700;letter-spacing:-.01em}
.resume-row{display:flex;gap:12px;margin-top:14px;overflow-x:auto;padding-bottom:6px;scrollbar-width:thin}
.r-card{flex:0 0 min(320px,82vw);display:grid;grid-template-columns:auto 1fr;gap:4px 16px;align-items:center;padding:18px 20px;border-radius:18px;background:var(--surface);border:1px solid var(--line);transition:border-color .15s}
.r-card:hover{border-color:var(--accent)}
.r-native{grid-row:1/span 2;font-family:var(--display);font-weight:700;font-size:1.7rem;letter-spacing:-.04em;color:var(--accent)}
.r-native[lang="ar"]{font-family:"Noto Kufi Arabic",var(--sans);letter-spacing:0}
.r-meta{font-size:.8rem;color:var(--ink-3)}
.r-title{font-weight:700;line-height:1.35}

/* 전체 강좌 목록 */
.index{max-width:1280px;margin:0 auto;padding:30px 24px 24px}
.index-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px 24px}
.index-tools{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{height:36px;padding:0 14px;border-radius:999px;border:1px solid var(--line-2);background:transparent;font-size:.86rem;color:var(--ink-2);cursor:pointer}
.chip[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--bg);font-weight:600}
.chip:disabled{cursor:default;opacity:.5}
.chip small{margin-left:6px;font-size:.78em;opacity:.8}
.find{display:flex;align-items:center;gap:8px;height:42px;width:min(320px,100%);padding:0 14px;border-radius:12px;background:var(--surface);border:1px solid var(--line)}
.find:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.find svg{width:18px;height:18px;flex:none;color:var(--ink-3)}
.find input{flex:1;min-width:0;border:0;background:transparent;font:inherit;font-size:.95rem;color:var(--ink);outline:none}
.find input::placeholder{color:var(--ink-3)}
/* 강좌 타일: 가로줄부터 채우고, 강좌가 늘면 아래로 이어짐 */
.tiles{list-style:none;margin:22px 0 0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px}
.tile-li[hidden]{display:none}
.tile{--mix:15%;position:relative;display:flex;flex-direction:column;justify-content:space-between;aspect-ratio:1/1;padding:22px 22px 20px;border-radius:22px;
  background:var(--surface);border:1px solid var(--line);container-type:inline-size;transition:background .35s ease,border-color .35s ease}
a.tile:hover,a.tile:focus-visible{background:color-mix(in srgb,var(--hue) var(--mix),var(--surface));border-color:color-mix(in srgb,var(--hue) 45%,var(--line))}
a.tile:focus-visible{outline:2px solid var(--hue);outline-offset:3px}
.t-native{font-family:var(--display);font-weight:700;font-size:2.2rem;font-size:clamp(1.6rem,15cqi,3.4rem);line-height:1.05;letter-spacing:-.045em;color:var(--ink);overflow-wrap:anywhere}
.t-native[lang="ar"]{font-family:"Noto Kufi Arabic",var(--sans);letter-spacing:0;font-size:clamp(1.5rem,14cqi,3rem)}
.t-native[lang="zh"],.t-native[lang="ja"]{letter-spacing:.01em}
.t-foot{display:flex;flex-direction:column;gap:2px}
.t-foot b{font-size:1.02rem}
.t-state{font-size:.84rem;color:var(--ink-2)}
a.tile .t-state::before{content:"";display:inline-block;width:7px;height:7px;margin-right:7px;border-radius:50%;background:var(--hue);vertical-align:.08em}
/* 준비 중인 강좌: 마우스와 상관없이 회색으로 비활성 */
.tile.off{background:var(--sunk);border-style:dashed;border-color:var(--line-2);cursor:default}
.tile.off .t-native{color:var(--ink-3)}
.tile.off .t-foot b{color:var(--ink-3);font-weight:600}
.tile.off .t-state{color:var(--ink-3)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .tile{--mix:24%}}
:root[data-theme="dark"] .tile{--mix:24%}
@media (max-width:520px){.tiles{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.tile{padding:16px 16px 14px;border-radius:18px}}
@media (prefers-reduced-motion:reduce){.tile{transition:none}}
.rows-empty{padding:26px 12px;color:var(--ink-2)}
.more{margin:22px 12px 0;font-size:.9rem;color:var(--ink-3)}

/* 바닥글 */
.foot{margin-top:56px;border-top:1px solid var(--line)}
.foot-in{max-width:1280px;margin:0 auto;padding:26px 24px 48px;display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:10px 30px;font-size:.86rem;color:var(--ink-2)}
.foot p{margin:0}
.foot a{color:var(--accent-ink);font-weight:600}
.foot a:hover{text-decoration:underline;text-underline-offset:3px}

/* ================= 강좌 페이지 ================= */
.wrap{max-width:1280px;margin:0 auto;padding:0 24px}
.hero{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(300px,1fr);gap:64px;align-items:end;padding:48px 0 60px}
.crumb{display:flex;gap:8px;margin:0 0 18px;font-size:.88rem;color:var(--ink-3)}
.crumb a:hover{color:var(--ink)}
.native{margin:0;font-family:var(--display);font-weight:700;font-size:clamp(3.2rem,10vw,8rem);line-height:1;letter-spacing:-.05em}
.native[lang="ar"]{font-family:"Noto Kufi Arabic",var(--sans);letter-spacing:0;font-size:clamp(2.8rem,9vw,7rem)}
.native[lang="zh"],.native[lang="ja"]{letter-spacing:.01em}
.hero-name{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px;margin:18px 0 0;font-size:1.3rem;font-weight:700}
.hero-name span{font-weight:600;color:var(--accent)}
.hero-sub{margin:16px 0 0;max-width:32em;font-size:1.04rem;line-height:1.8;color:var(--ink-2)}
.facts{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:8px;font-size:.93rem;color:var(--ink-2)}
.facts li{display:flex;align-items:center;gap:12px}
.facts li::before{content:"";flex:none;width:8px;height:8px;border-radius:2px;background:var(--accent)}
.cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.btn{display:inline-flex;align-items:center;gap:8px;height:50px;padding:0 22px;border-radius:14px;border:1px solid transparent;font-weight:600;font-size:.98rem;transition:background .15s,border-color .15s}
.btn svg{width:18px;height:18px}
.btn.primary{background:var(--ink);color:var(--bg)}
.btn.primary:hover{background:var(--accent)}
.btn.ghost{border-color:var(--line-2);color:var(--ink)}
.btn.ghost:hover{border-color:var(--ink)}
.btn.off{background:var(--sunk);border-color:var(--line);color:var(--ink-3);cursor:default}
.side-label{margin:0 0 12px;font-size:.86rem;font-weight:600;color:var(--ink-2)}
.card{display:block;padding:24px 26px 20px;border:1px solid var(--line);border-radius:22px;background:var(--surface);box-shadow:var(--shadow);transition:border-color .15s}
a.card:hover{border-color:var(--accent)}
.card .c-id{font-size:.84rem;font-weight:600;color:var(--accent-ink)}
.card .c-t{display:block;margin:6px 0 0;font-weight:800;font-size:1.45rem;letter-spacing:-.02em;line-height:1.3}
.card .c-p{display:block;margin-top:10px;font-size:.9rem;line-height:1.7;color:var(--ink-2)}
.card .c-go{display:flex;justify-content:space-between;align-items:center;margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:.86rem;color:var(--ink-2)}
.card .c-go b{color:var(--accent-ink)}
.card.off .c-go b{color:var(--ink-3)}
.overall{margin:20px 4px 0}
.overall-row{display:flex;justify-content:space-between;align-items:baseline;font-size:.84rem;color:var(--ink-2)}
.overall-row b{color:var(--ink);font-variant-numeric:tabular-nums}
.overall-bar{margin-top:9px;height:6px;border-radius:3px;background:var(--sunk);overflow:hidden}
.overall-bar i{display:block;height:100%;width:var(--p);background:var(--accent)}

.curriculum{padding-top:4px}
.sec-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:18px;padding:40px 0 18px;border-top:2px solid var(--ink)}
.sec-head h2{margin:0;font-size:2rem;font-weight:800;letter-spacing:-.03em}
.finder{width:min(400px,100%)}
.finder .find{width:100%;height:48px}
.finder-note{min-height:1.3em;margin:8px 2px 0;font-size:.82rem;color:var(--ink-2)}
.jump{position:sticky;top:64px;z-index:15;display:flex;gap:8px;overflow-x:auto;padding:12px 0;background:var(--bg);background:color-mix(in srgb,var(--bg) 90%,transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);scrollbar-width:none}
.jump::-webkit-scrollbar{display:none}
.jump a{flex:none;padding:7px 14px;border-radius:999px;border:1px solid var(--line-2);font-size:.88rem;color:var(--ink-2);background:var(--surface)}
.jump a:hover{color:var(--ink);border-color:var(--ink)}
.jump a span{margin-left:6px;color:var(--ink-3)}
.level{display:grid;grid-template-columns:230px minmax(0,1fr);gap:34px;padding:26px 0 38px;border-top:1px solid var(--line)}
.level-head{position:sticky;top:128px;align-self:start}
.level-head h3{margin:0;font-size:1.7rem;font-weight:800;letter-spacing:-.03em}
.level-head .cap{display:block;margin-top:4px;font-weight:700;color:var(--accent-ink)}
.level-head .desc{margin:12px 0 0;font-size:.88rem;line-height:1.7;color:var(--ink-2)}
.level-head .count{margin:12px 0 0;font-size:.84rem;font-weight:600}
/* 강의 타일: 1px 선으로 이어 붙인 색인 카드 */
.patch{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1px;padding:1px;background:var(--line);border-radius:18px;overflow:hidden}
.lesson{display:flex;flex-direction:column;min-height:220px;padding:18px 20px 16px;background:var(--sunk);transition:background .15s,opacity .2s}
a.lesson{background:var(--surface)}
a.lesson:hover{background:var(--accent-soft)}
.lesson:focus-visible{outline-offset:-4px}
.l-top{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.l-num{font-family:"Unbounded",var(--sans);font-weight:700;font-size:2rem;line-height:.9;letter-spacing:-.04em;color:var(--ink-3)}
a.lesson .l-num{color:var(--accent)}
.l-state{display:inline-flex;align-items:center;gap:5px;height:24px;padding:0 9px;border-radius:999px;font-size:.72rem;font-weight:600;white-space:nowrap;color:var(--ink-3);box-shadow:inset 0 0 0 1px var(--line-2)}
a.lesson .l-state{background:var(--accent);color:#fff;box-shadow:none}
.lesson.opened .l-state::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.l-title{margin:14px 0 0;font-size:1.1rem;font-weight:800;line-height:1.35;letter-spacing:-.02em}
.l-sum{margin:8px 0 0;font-size:.84rem;line-height:1.68;color:var(--ink-2)}
.l-ex{margin-top:auto;padding-top:14px;font-size:.88rem;color:var(--ink-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lesson.dim{opacity:.22}
.part{grid-column:1/-1;display:flex;align-items:baseline;gap:10px;padding:13px 20px 12px;background:var(--bg);font-size:.86rem;color:var(--ink-2)}
.part b{color:var(--accent-ink)}
.part span{font-weight:600;color:var(--ink)}
.part em{margin-left:auto;font-style:normal;color:var(--ink-3)}
.soon{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;min-height:120px;padding:22px 24px;background:var(--sunk)}
.soon p{margin:0;color:var(--ink-2)}
.soon b{font-size:1.05rem;color:var(--ink)}
.soon span{font-size:.82rem;color:var(--ink-3)}
.level.nomatch .level-head{opacity:.4}

@media (max-width:900px){
  .hero{grid-template-columns:1fr;gap:40px;padding:32px 0 44px}
  .level{grid-template-columns:1fr;gap:16px}
  .level-head{position:static}
}
@media (max-width:640px){
  .bar-in,.stage,.resume,.index,.wrap,.foot-in{padding-left:18px;padding-right:18px}
  .patch{grid-template-columns:1fr}
  .lesson{min-height:0}
  .btn{flex:1;justify-content:center}
  .index-tools,.find{width:100%}
}