:root{
  --ink:#1c1a17;
  --ink-2:#54504a;
  --ink-3:#8a847b;
  --paper:#faf7f2;
  --card:#ffffff;
  --line:#e6e0d6;
  --red:#c0392b;
  --blue:#2b6cb0;
  --green:#2c7a5c;
  --amber:#b7791f;
  --shadow:0 1px 2px rgba(28,26,23,.05), 0 4px 16px rgba(28,26,23,.05);
  --ko: "Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic","Nanum Gothic",sans-serif;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  background:var(--paper);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Noto Sans JP","Yu Gothic",sans-serif;
  font-size:15px;line-height:1.7;
  padding-bottom:76px;
  overscroll-behavior-y:none;
}
.ko{font-family:var(--ko)}

/* ---------- header ---------- */
header{
  position:sticky;top:0;z-index:20;
  background:rgba(250,247,242,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.hd{max-width:640px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;gap:10px}
.hd h1{font-size:16px;margin:0;font-weight:700;letter-spacing:.02em;flex:1}
.hd .mark{
  width:28px;height:28px;border-radius:8px;flex:none;
  background:linear-gradient(135deg,var(--red) 0 50%,var(--blue) 50% 100%);
  display:grid;place-items:center;color:#fff;font-size:13px;font-weight:700;
  font-family:var(--ko)
}
.hd .streak{font-size:12px;color:var(--ink-2);white-space:nowrap}
main{max-width:640px;margin:0 auto;padding:16px}

/* ---------- cards ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:16px;margin-bottom:14px;box-shadow:var(--shadow)
}
.card h2{font-size:15px;margin:0 0 10px;font-weight:700}
.card h3{font-size:13px;margin:18px 0 8px;font-weight:700;color:var(--ink-2)}
.muted{color:var(--ink-3);font-size:13px}
.sec-title{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--ink-3);margin:22px 0 10px}
.sec-title:first-child{margin-top:0}

/* ---------- home ---------- */
.hero{
  background:linear-gradient(160deg,#fff,#fdfaf4);
  border:1px solid var(--line);border-radius:16px;padding:18px;margin-bottom:14px;box-shadow:var(--shadow)
}
.hero .lbl{font-size:11px;letter-spacing:.1em;color:var(--red);font-weight:700}
.hero .ttl{font-size:20px;font-weight:800;margin:6px 0 2px;line-height:1.4}
.ring-wrap{display:flex;align-items:center;gap:16px;margin:14px 0 4px}
.ring{width:78px;height:78px;flex:none}
.ring circle{fill:none;stroke-width:9;stroke-linecap:round}
.ring .bg{stroke:#eee7db}
.ring .fg{stroke:var(--red);transition:stroke-dasharray .6s ease}
.ring-txt{font-size:19px;font-weight:800;fill:var(--ink);font-family:inherit}
.stats{display:flex;gap:8px;flex:1;flex-wrap:wrap}
.stat{flex:1;min-width:78px;background:#fbf8f3;border:1px solid var(--line);border-radius:10px;padding:8px 10px}
.stat b{display:block;font-size:18px;line-height:1.2}
.stat span{font-size:11px;color:var(--ink-3)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  border-radius:10px;padding:11px 16px;font-size:14px;font-weight:700;
  cursor:pointer;font-family:inherit;transition:.15s
}
.btn:active{transform:scale(.98)}
.btn.primary{background:var(--red);border-color:var(--red);color:#fff}
.btn.blue{background:var(--blue);border-color:var(--blue);color:#fff}
.btn.ghost{background:transparent}
.btn.wide{width:100%}
.btn.sm{padding:7px 11px;font-size:12.5px;border-radius:8px}
.btn:disabled{opacity:.45;cursor:default}
.btn-row{display:flex;gap:8px;flex-wrap:wrap}

/* ---------- day grid ---------- */
.phase{margin:20px 0 10px;display:flex;align-items:center;gap:8px}
.phase b{font-size:13px;font-weight:700}
.phase i{flex:1;height:1px;background:var(--line)}
.daygrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(84px,1fr));gap:8px}
.daycell{
  background:var(--card);border:1px solid var(--line);border-radius:11px;
  padding:10px 8px;text-align:left;cursor:pointer;font-family:inherit;transition:.15s
}
.daycell:active{transform:scale(.97)}
.daycell .n{font-size:11px;color:var(--ink-3);font-weight:700}
.daycell .t{font-size:11.5px;line-height:1.4;margin-top:3px;color:var(--ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.daycell.done{background:#f2f8f4;border-color:#cfe6d9}
.daycell.done .n{color:var(--green)}
.daycell.today{border-color:var(--red);box-shadow:0 0 0 2px rgba(192,57,43,.12)}

/* ---------- phrase ---------- */
.phrase{border-bottom:1px solid var(--line);padding:13px 0}
.phrase:last-child{border-bottom:none;padding-bottom:0}
.phrase:first-child{padding-top:0}
.ph-ko{font-size:20px;font-weight:600;font-family:var(--ko);line-height:1.5;letter-spacing:-.01em}
.ph-kana{font-size:13px;color:var(--blue);font-weight:600;margin-top:2px}
.ph-ja{font-size:13.5px;color:var(--ink-2);margin-top:3px}
.ph-top{display:flex;align-items:flex-start;gap:10px}
.ph-top>div{flex:1;min-width:0}
.spk{
  flex:none;width:36px;height:36px;border-radius:50%;border:1px solid var(--line);
  background:#fff;cursor:pointer;display:grid;place-items:center;font-size:15px;color:var(--blue)
}
.spk:active{background:#eef4fb}
.hide-kana .ph-kana,.hide-ja .ph-ja{visibility:hidden}

/* ---------- jamo table ---------- */
.jamo{display:grid;grid-template-columns:repeat(auto-fill,minmax(72px,1fr));gap:8px}
.jcell{
  background:var(--card);border:1px solid var(--line);border-radius:11px;padding:10px 6px;
  text-align:center;cursor:pointer;font-family:inherit;transition:.15s
}
.jcell:active{transform:scale(.95);background:#fbf6ee}
.jcell .c{font-size:26px;font-family:var(--ko);line-height:1.2;font-weight:500}
.jcell .r{font-size:10.5px;color:var(--ink-3);margin-top:2px}
.jcell .k{font-size:12px;color:var(--blue);font-weight:700}
.jnote{font-size:12px;color:var(--ink-2);background:#fbf8f3;border-radius:8px;padding:8px 10px;margin-top:10px;min-height:34px}

/* ---------- quiz ---------- */
.q-head{display:flex;justify-content:space-between;font-size:12px;color:var(--ink-3);margin-bottom:10px}
.q-bar{height:4px;background:#eee7db;border-radius:2px;overflow:hidden;margin-bottom:16px}
.q-bar i{display:block;height:100%;background:var(--red);transition:width .3s}
.q-prompt{font-size:14px;color:var(--ink-2);margin-bottom:6px}
.q-main{font-size:26px;font-weight:700;line-height:1.5;margin-bottom:18px;word-break:keep-all}
.q-main.ko{font-family:var(--ko)}
.opts{display:grid;gap:9px}
.opt{
  text-align:left;padding:13px 14px;border:1px solid var(--line);background:#fff;
  border-radius:11px;cursor:pointer;font-size:14.5px;font-family:inherit;line-height:1.5;transition:.15s
}
.opt:active{transform:scale(.99)}
.opt.ok{background:#eaf6ef;border-color:var(--green);color:var(--green);font-weight:700}
.opt.ng{background:#fdeeec;border-color:var(--red);color:var(--red)}
.opt.dim{opacity:.5}
.q-fb{margin-top:14px;padding:12px;border-radius:10px;background:#fbf8f3;font-size:13.5px;display:none}
.q-fb.show{display:block}
.q-fb b{font-family:var(--ko);font-size:16px}

/* ---------- flashcard ---------- */
.fc{
  min-height:190px;background:var(--card);border:1px solid var(--line);border-radius:16px;
  display:grid;place-items:center;text-align:center;padding:24px;cursor:pointer;box-shadow:var(--shadow)
}
.fc .front{font-size:22px;font-weight:700;line-height:1.5}
.fc .front.ko{font-family:var(--ko);font-size:28px}
.fc .back{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);width:100%}
.fc .back .a{font-size:24px;font-family:var(--ko);font-weight:600}
.fc .back .b{font-size:13px;color:var(--blue);font-weight:600;margin-top:3px}
.fc .back .c{font-size:13px;color:var(--ink-2);margin-top:2px}
.fc .tap{font-size:12px;color:var(--ink-3);margin-top:12px}

/* ---------- search ---------- */
.search{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:11px;
  font-size:15px;font-family:inherit;background:#fff;margin-bottom:12px
}
.search:focus{outline:2px solid rgba(43,108,176,.25);border-color:var(--blue)}
.tagrow{display:flex;gap:6px;overflow-x:auto;padding-bottom:8px;margin-bottom:8px;-webkit-overflow-scrolling:touch}
.tag{
  flex:none;padding:6px 12px;border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:12.5px;cursor:pointer;font-family:inherit;white-space:nowrap
}
.tag.on{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ---------- nav ---------- */
nav{
  position:fixed;bottom:0;left:0;right:0;z-index:30;
  background:rgba(255,255,255,.94);backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom)
}
.nv{max-width:640px;margin:0 auto;display:grid;grid-template-columns:repeat(5,1fr)}
.nv button{
  background:none;border:none;padding:9px 2px 10px;cursor:pointer;font-family:inherit;
  color:var(--ink-3);display:flex;flex-direction:column;align-items:center;gap:3px
}
.nv button .i{font-size:17px;line-height:1}
.nv button .l{font-size:10.5px;font-weight:700}
.nv button.on{color:var(--red)}

/* ---------- misc ---------- */
.back-link{background:none;border:none;color:var(--ink-3);font-size:13px;cursor:pointer;
  font-family:inherit;padding:0 0 10px;font-weight:700}
.pill{display:inline-block;font-size:11px;font-weight:700;padding:3px 9px;border-radius:999px;
  background:#f4efe6;color:var(--ink-2)}
.pill.red{background:#fdeeec;color:var(--red)}
.pill.green{background:#eaf6ef;color:var(--green)}
.tip{background:#fbf8f3;border-left:3px solid var(--amber);padding:11px 13px;border-radius:0 8px 8px 0;
  font-size:13.5px;color:var(--ink-2);line-height:1.75}
.exlist{font-size:13px}
.exlist div{padding:6px 0;border-bottom:1px dotted var(--line);display:flex;gap:10px;align-items:baseline}
.exlist div:last-child{border:none}
.exlist b{font-family:var(--ko);font-size:16px;font-weight:600;flex:none}
.exlist span{color:var(--blue);font-size:12px;font-weight:600;flex:none}
.exlist i{color:var(--ink-3);font-style:normal;font-size:12px}
.toast{
  position:fixed;left:50%;bottom:92px;transform:translateX(-50%) translateY(10px);
  background:var(--ink);color:#fff;padding:10px 18px;border-radius:999px;font-size:13px;font-weight:700;
  opacity:0;transition:.25s;pointer-events:none;z-index:50;white-space:nowrap
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.center{text-align:center}
.big-score{font-size:44px;font-weight:800;line-height:1.1;margin:8px 0}
@media(min-width:520px){ body{font-size:15.5px} .daygrid{grid-template-columns:repeat(auto-fill,minmax(96px,1fr))} }