/* Auto course: a calm, full-screen "now playing" layer. */
body.ac-open{overflow:hidden}
.ac{position:fixed;inset:0;z-index:80;display:flex;flex-direction:column;background:radial-gradient(120% 80% at 50% 0%,#eaf5ee 0%,var(--pl-bg,#f6f5ef) 55%);color:var(--pl-ink,#1c2b26);font-family:var(--pl-font,system-ui);overflow:auto;animation:ac-in .28s var(--pl-ease,ease) both}
:root[data-theme=dark] .ac{background:radial-gradient(120% 80% at 50% 0%,#1d3a2f 0%,var(--pl-bg) 60%)}
@keyframes ac-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.ac-top{display:flex;align-items:center;gap:14px;padding:14px 18px;max-width:880px;width:100%;margin:0 auto;box-sizing:border-box}
.ac-icon{flex:none;width:44px;height:44px;border-radius:50%;border:1px solid var(--pl-line);background:var(--pl-surface);font-size:18px;cursor:pointer;color:var(--pl-ink)}
.ac-icon:hover{background:var(--pl-soft)}
.ac-progress{flex:1;height:8px;border-radius:999px;background:var(--pl-line);overflow:hidden}
.ac-progress-bar{height:100%;width:0;border-radius:inherit;background:linear-gradient(90deg,var(--pl-pine),#4fb286);transition:width .4s linear}
.ac-time{flex:none;font-variant-numeric:tabular-nums;font-weight:700;color:var(--pl-muted);font-size:14px;min-width:72px;text-align:right}
.ac-streak{margin-left:auto;padding:6px 12px;border-radius:999px;background:#fff1dc;color:#8a4b00;font-weight:800;font-size:13px}

/* intro */
.ac-intro,.ac-done{flex:1;display:flex;flex-direction:column;align-items:center;text-align:center;gap:14px;padding:12px 20px 40px;max-width:560px;width:100%;margin:0 auto;box-sizing:border-box}
.ac-hero{font-size:56px;line-height:1;margin-top:8px;filter:drop-shadow(0 8px 16px rgba(20,60,40,.15))}
.ac-title{margin:0;font-size:clamp(26px,5vw,34px);letter-spacing:-.6px;line-height:1.25;outline:none}
.ac-lead{margin:0;color:var(--pl-muted);font-size:16px;line-height:1.6}
.ac-minutes{display:inline-flex;gap:6px;padding:5px;border-radius:999px;background:var(--pl-surface);border:1px solid var(--pl-line);margin-top:4px}
.ac-minute{min-height:42px;padding:0 20px;border:0;border-radius:999px;background:transparent;font:inherit;font-weight:700;color:var(--pl-muted);cursor:pointer}
.ac-minute[aria-checked=true]{background:var(--pl-pine);color:#fff}
.ac-plan{list-style:none;margin:6px 0 0;padding:0;width:100%;display:grid;gap:8px;text-align:left}
.ac-plan-item{display:grid;grid-template-columns:40px 1fr;grid-template-rows:auto auto;column-gap:12px;align-items:center;padding:12px 14px;border-radius:16px;background:var(--pl-surface);border:1px solid var(--pl-line)}
.ac-plan-icon{grid-row:1/3;width:40px;height:40px;display:grid;place-items:center;border-radius:12px;background:var(--pl-pine-soft);font-size:20px}
.ac-plan-item strong{font-size:15px}.ac-plan-item span:last-child{color:var(--pl-muted);font-size:13px}
.ac-start{width:100%;min-height:58px;margin-top:6px;border:0;border-radius:18px;background:var(--pl-pine);color:#fff;font:inherit;font-size:18px;font-weight:800;cursor:pointer;box-shadow:0 12px 28px rgba(15,74,56,.25);transition:transform .15s,background .15s}
.ac-start:hover:not(:disabled){background:var(--pl-pine-dark);transform:translateY(-1px)}.ac-start:disabled{opacity:.5;cursor:default}
.ac-secondary{border:0;background:transparent;color:var(--pl-muted);font:inherit;font-weight:700;min-height:44px;cursor:pointer}
.ac-empty{color:var(--pl-muted)}

/* player */
.ac-main{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:8px 20px 20px;max-width:760px;width:100%;margin:0 auto;box-sizing:border-box}
.ac-chip{margin:0;padding:7px 14px;border-radius:999px;background:var(--pl-surface);border:1px solid var(--pl-line);font-weight:700;font-size:14px;color:var(--pl-pine)}
.ac-card{position:relative;width:100%;min-height:300px;box-sizing:border-box;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:34px 26px;border-radius:28px;background:var(--pl-surface);border:1px solid var(--pl-line);box-shadow:0 18px 50px rgba(20,50,40,.10);text-align:center}
.ac-cue{margin:0;color:var(--pl-muted);font-weight:700;font-size:14px;letter-spacing:.2px;min-height:20px}
.ac-meaning{margin:0;font-size:clamp(20px,3.6vw,26px);line-height:1.45;color:var(--pl-muted);transition:opacity .25s}
.ac-target{margin:0;font-size:clamp(28px,6vw,44px);font-weight:800;letter-spacing:-.5px;line-height:1.3;color:var(--pl-ink);transition:opacity .25s,transform .25s}
.ac-reading{margin:0;color:var(--pl-pine);font-size:16px;min-height:22px}
/* Hide the answer while the learner is recalling it. */
.ac-card[data-reveal=false] .ac-target,.ac-card[data-reveal=false] .ac-reading{opacity:0;transform:translateY(6px)}
.ac-card[data-step=context][data-reveal=false] .ac-meaning{opacity:0}
.ac-card[data-step=context][data-reveal=false] .ac-target{opacity:1;transform:none}
.ac-card[data-phase=shadow] .ac-target{color:var(--pl-pine)}
.ac-ring{position:absolute;top:16px;right:16px;width:44px;height:44px;opacity:0;transition:opacity .2s}
.ac-ring[data-on=true]{opacity:1}
.ac-ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.ac-ring circle{fill:none;stroke:var(--pl-line);stroke-width:4}
.ac-ring .ac-ring-fg{stroke:var(--pl-pine);stroke-linecap:round;stroke-dasharray:119.4;stroke-dashoffset:calc(119.4 * var(--p,0));transition:stroke-dashoffset .25s linear}
.ac-tip{margin:0;max-width:520px;text-align:center;color:var(--pl-muted);font-size:13px;line-height:1.5}
.ac-combo{margin:0;min-height:22px;font-weight:800;color:#8a4b00;opacity:0}
.ac-combo.is-on{animation:ac-pop 2.2s ease both}
@keyframes ac-pop{0%{opacity:0;transform:scale(.9)}12%{opacity:1;transform:scale(1.05)}25%{transform:scale(1)}80%{opacity:1}100%{opacity:0}}
.ac-stage-banner{position:fixed;left:50%;top:84px;transform:translateX(-50%);padding:10px 18px;border-radius:999px;background:var(--pl-pine);color:#fff;font-weight:800;opacity:0;pointer-events:none;z-index:2;white-space:nowrap}
.ac-stage-banner.is-on{animation:ac-banner 2.4s ease both}
@keyframes ac-banner{0%{opacity:0;transform:translate(-50%,-10px)}12%,75%{opacity:1;transform:translate(-50%,0)}100%{opacity:0;transform:translate(-50%,-6px)}}
.ac-controls{display:flex;justify-content:center;align-items:center;gap:22px;padding:14px 20px calc(22px + env(safe-area-inset-bottom))}
.ac-ctrl{width:52px;height:52px;border-radius:50%;border:1px solid var(--pl-line);background:var(--pl-surface);font-size:18px;cursor:pointer;color:var(--pl-ink)}
.ac-play{width:76px;height:76px;border-radius:50%;border:0;background:var(--pl-pine);color:#fff;font-size:24px;font-weight:800;cursor:pointer;box-shadow:0 12px 28px rgba(15,74,56,.3)}
.ac-play[data-state=loading]{animation:ac-pulse 1.2s ease-in-out infinite}
@keyframes ac-pulse{50%{opacity:.6}}
.ac-ctrl:hover,.ac-icon:hover{background:var(--pl-soft)}

/* done */
.ac-done{justify-content:center;position:relative}
.ac-streak-big{margin:0;font-weight:800;color:#8a4b00}
.ac-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;width:100%}
.ac-stat{padding:16px 8px;border-radius:18px;background:var(--pl-surface);border:1px solid var(--pl-line)}
.ac-stat strong{display:block;font-size:28px;color:var(--pl-pine)}.ac-stat span{font-size:13px;color:var(--pl-muted)}
.ac-confetti{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.ac-confetti i{position:absolute;top:-12px;left:calc(var(--i) * 4.2%);width:8px;height:14px;border-radius:2px;background:hsl(calc(var(--i) * 37),75%,60%);animation:ac-fall calc(1.6s + var(--i) * .05s) ease-in calc(var(--i) * .04s) both}
@keyframes ac-fall{to{transform:translateY(105vh) rotate(540deg);opacity:.2}}

@media (max-width:560px){.ac-card{min-height:260px;padding:26px 18px;border-radius:22px}.ac-controls{gap:16px}.ac-stage-banner{top:72px}}
@media (prefers-reduced-motion:reduce){.ac,.ac *{animation:none!important;transition:none!important}}

/* pine reward */
.ac-pine{flex:none;width:40px;height:40px;display:grid;place-items:center}
.ac-pine.is-grow{animation:ac-grow .9s cubic-bezier(.2,1.4,.4,1) both}
@keyframes ac-grow{0%{transform:scale(.6)}60%{transform:scale(1.25)}100%{transform:scale(1)}}
.ac-hero .pine-svg{display:block;margin:0 auto}
.ac-hero-grow{animation:ac-grow 1.1s cubic-bezier(.2,1.4,.4,1) .2s both}
.ac-planted{margin:-4px 0 0;font-weight:800;color:var(--pl-pine);font-size:17px}
.ac-forest{width:100%;padding:14px 14px 6px;border-radius:20px;background:linear-gradient(180deg,#eef7f0,#e3f0e5);border:1px solid var(--pl-line);box-sizing:border-box}
.ac-forest strong{display:block;text-align:left;font-size:14px;color:var(--pl-pine)}
.ac-forest .forest-svg{display:block;width:100%;height:auto;max-height:150px}
.ac-badges{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.ac-badge{padding:8px 14px;border-radius:999px;background:linear-gradient(135deg,#fff3cf,#fde3a0);color:#7a4b00;font-weight:800;font-size:13px;animation:ac-grow .8s ease .6s both}

/* home: today's pine */
.pine-today{display:flex;align-items:center;gap:18px;margin:0 0 18px;padding:18px 20px;border-radius:var(--pl-radius-lg,20px);background:linear-gradient(120deg,#f2faf3 0%,#fffdf6 70%);border:1px solid var(--pl-line);box-shadow:var(--pl-shadow)}
.pine-today[data-done=true]{background:linear-gradient(120deg,#e6f5ea 0%,#fbfff6 70%)}
.pine-today-art{flex:none;width:88px}
.pine-today-copy{flex:1;min-width:0;display:grid;gap:8px}
.pine-today-head{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.pine-today-head h2{margin:0;font-size:19px;letter-spacing:-.3px}
.pine-today-streak{padding:4px 10px;border-radius:999px;background:#fff1dc;color:#8a4b00;font-weight:800;font-size:12px}
.pine-today-trees{padding:4px 10px;border-radius:999px;background:var(--pl-pine-soft);color:var(--pl-pine);font-weight:800;font-size:12px}
.pine-today-message{margin:0;color:var(--pl-muted);line-height:1.5}
.pine-today-start{justify-self:start;min-height:46px;padding:0 20px;border:0;border-radius:14px;background:var(--pl-pine);color:#fff;font:inherit;font-weight:800;cursor:pointer;box-shadow:0 8px 20px rgba(15,74,56,.2)}
.pine-today-start:hover{background:var(--pl-pine-dark)}
.pine-today[data-done=true] .pine-today-start{background:var(--pl-surface);color:var(--pl-pine);border:1px solid var(--pl-pine);box-shadow:none}
@media (max-width:560px){.pine-today{padding:14px;gap:12px}.pine-today-art{width:64px}.pine-today-art svg{width:64px;height:64px}.pine-today-start{justify-self:stretch}}

/* difficulty, screen-off tip, premium invitation */
.ac-levels{margin-top:-4px}
.ac-tip-box{width:100%;box-sizing:border-box;display:grid;gap:4px;padding:14px 16px;border-radius:16px;background:#eef6ff;border:1px solid #d6e6fb;text-align:left}
.ac-tip-box strong{font-size:15px;color:#1f4f86}.ac-tip-box span{font-size:13.5px;color:#3e5f86;line-height:1.55}
:root[data-theme=dark] .ac-tip-box{background:#1b2b40;border-color:#2b4566}:root[data-theme=dark] .ac-tip-box strong,:root[data-theme=dark] .ac-tip-box span{color:#cfe2ff}
.ac-premium{width:100%;box-sizing:border-box;margin-top:6px;padding:18px;border-radius:20px;text-align:left;background:linear-gradient(135deg,#fff8e6,#fff1cf);border:1px solid #f3dca0;display:grid;gap:8px}
.ac-premium-title{font-size:16px;color:#6b4300}
.ac-premium-note{margin:0;font-size:13px;color:#8a5a00;font-weight:700}
.ac-premium-list{list-style:none;margin:0;padding:0;display:grid;gap:5px;font-size:14px;color:#5b4520}
.ac-premium-cta{justify-self:start;display:inline-flex;align-items:center;min-height:44px;padding:0 18px;border-radius:12px;background:#7a4b00;color:#fff;font-weight:800;text-decoration:none}
.ac-premium-cta:hover{background:#5e3900}

/* ---------- AI 자동학습 intro: two columns, fits one screen (no page scroll) ---------- */
.ac.ac-wide{overflow:hidden}
.ac-wide .ac-top{max-width:1280px;padding:12px 28px}
.ac-brand{font-weight:800;color:var(--pl-pine-dark,#0f4a38);letter-spacing:-.3px}
.ac-plan-badge{margin-left:auto;padding:5px 12px;border-radius:999px;border:1px solid var(--pl-line);font-size:12.5px;font-weight:700;color:var(--pl-muted)}
.ac-layout{flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:24px;width:100%;max-width:1280px;margin:0 auto;padding:4px 28px 22px;box-sizing:border-box}
.ac-col{min-height:0;display:flex;flex-direction:column;gap:12px}
.ac-side{overflow:auto}
.ac-head .ac-kicker{margin:0 0 4px;font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--pl-pine,#1b6b52)}
.ac-wide .ac-title{font-size:clamp(26px,2.6vw,34px);text-align:left}
.ac-wide .ac-lead{font-size:15px;text-align:left;margin-top:4px}
.ac-metrics{display:grid;grid-template-columns:repeat(4,1fr) 1.3fr;gap:8px}
.ac-metric,.ac-week{background:var(--pl-surface,#fff);border:1px solid var(--pl-line,#e3e8e4);border-radius:14px;padding:10px 12px;display:flex;flex-direction:column;gap:2px;min-width:0}
.ac-metric strong{font-size:22px;font-weight:800;color:var(--pl-ink,#1c2b26);font-variant-numeric:tabular-nums}
.ac-metric span{font-size:12.5px;font-weight:700;color:var(--pl-muted)}
.ac-metric small{font-size:11.5px;color:var(--pl-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ac-week{flex-direction:row;align-items:flex-end;gap:5px;padding:10px}
.ac-week-day{flex:1;height:100%;min-height:56px;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:4px}
.ac-week-day i{display:block;width:100%;max-width:14px;border-radius:4px;background:#cfe3d8}
.ac-week-day[data-today=true] i{background:var(--pl-pine,#1b6b52)}
.ac-week-day span{font-size:10.5px;color:var(--pl-muted)}
.ac-config{background:var(--pl-surface,#fff);border:1px solid var(--pl-line);border-radius:18px;padding:14px 16px;display:grid;gap:10px}
.ac-row{display:grid;grid-template-columns:76px 1fr;align-items:center;gap:12px}
.ac-row-label{font-size:13px;font-weight:800;color:var(--pl-muted)}
.ac-seg{display:flex;flex-wrap:wrap;gap:4px;padding:4px;border-radius:12px;background:var(--pl-soft,#f1f4f2)}
.ac-seg-btn{flex:1;min-height:36px;padding:0 12px;border:0;border-radius:9px;background:transparent;font:inherit;font-size:14px;font-weight:700;color:var(--pl-muted);cursor:pointer;white-space:nowrap}
.ac-seg-btn[aria-checked=true]{background:var(--pl-surface,#fff);color:var(--pl-pine-dark,#0f4a38);box-shadow:0 1px 4px rgba(0,0,0,.1)}
.ac-seg-btn[data-locked=true]{opacity:.6}
.ac-length{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.ac-stepper{display:flex;align-items:center;gap:6px;padding:4px;border-radius:12px;background:var(--pl-soft,#f1f4f2)}
.ac-step{width:38px;height:38px;border:0;border-radius:9px;background:var(--pl-surface,#fff);font-size:20px;font-weight:700;color:var(--pl-pine-dark,#0f4a38);cursor:pointer;box-shadow:0 1px 3px rgba(0,0,0,.08)}
.ac-step:disabled{opacity:.4;cursor:default}
.ac-length-value{min-width:110px;text-align:center;font-size:18px;font-weight:800;font-variant-numeric:tabular-nums}
.ac-presets{display:flex;flex-wrap:wrap;gap:6px}
.ac-chip{min-height:32px;padding:0 12px;border-radius:999px;border:1px solid var(--pl-line);background:transparent;font:inherit;font-size:13px;font-weight:700;color:var(--pl-muted);cursor:pointer}
.ac-chip[aria-pressed=true]{border-color:var(--pl-pine);color:var(--pl-pine-dark,#0f4a38);background:var(--pl-pine-soft,#e6f2ec)}
.ac-hint{width:100%;font-size:12px;color:var(--pl-muted)}
.ac-lock-note{margin:0;padding:10px 12px;border-radius:10px;background:#fff7e6;border:1px solid #f3dfb4;font-size:13px;color:#7a5200}
.ac-lock-note a{font-weight:800;color:#7a5200}
.ac-wide .ac-start{margin-top:0}
.ac-tip-line{margin:0;font-size:12.5px;color:var(--pl-muted)}
.ac-plan-card{background:var(--pl-surface,#fff);border:1px solid var(--pl-line);border-radius:18px;padding:14px 16px;display:flex;flex-direction:column;gap:10px}
.ac-plan-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.ac-plan-head h2{margin:0;font-size:16px}
.ac-evidence-btn{border:0;background:none;padding:4px 0;font:inherit;font-size:13px;font-weight:800;color:var(--pl-pine,#1b6b52);cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.ac-wide .ac-plan{margin:0;gap:6px}
.ac-wide .ac-plan-item{grid-template-columns:30px 1fr auto;grid-template-rows:auto;padding:9px 12px;border-radius:12px;background:var(--pl-soft,#f6f8f7)}
.ac-plan-no{font-size:13px;font-weight:800;color:var(--pl-pine,#1b6b52);font-variant-numeric:tabular-nums}
.ac-wide .ac-plan-item div{display:flex;flex-direction:column;min-width:0}
.ac-wide .ac-plan-item strong{font-size:14px}.ac-wide .ac-plan-item div span{font-size:12.5px;color:var(--pl-muted)}
.ac-plan-tag{font-size:11.5px;font-weight:700;color:#3d5a80;background:#eaf1fb;border-radius:999px;padding:3px 9px;white-space:nowrap}
.ac-side .ac-premium{margin:0}
@media (max-width:900px){.ac.ac-wide{overflow:auto}.ac-layout{grid-template-columns:1fr;padding:4px 16px 20px}.ac-side{overflow:visible}.ac-metrics{grid-template-columns:repeat(4,1fr)}.ac-week{grid-column:1/-1;min-height:70px}.ac-metric strong{font-size:18px}.ac-row{grid-template-columns:1fr}}

/* research sheet */
.ev-sheet{position:fixed;inset:0;z-index:95;background:rgba(15,30,25,.45);display:grid;place-items:center;padding:20px;animation:ac-in .2s ease both}
.ev-panel{width:min(980px,100%);max-height:100%;overflow:auto;background:var(--pl-surface,#fff);border-radius:20px;padding:22px 26px;box-sizing:border-box;text-align:left;box-shadow:0 30px 80px rgba(0,0,0,.25)}
.ev-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.ev-kicker{margin:0;font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--pl-pine,#1b6b52)}
.ev-head h2{margin:2px 0 0;font-size:24px}
.ev-close{width:38px;height:38px;border-radius:50%;border:1px solid var(--pl-line);background:none;cursor:pointer;font-size:16px}
.ev-intro{color:var(--pl-muted);font-size:14px;line-height:1.6;margin:10px 0 14px}
.ev-stages{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.ev-stage{display:grid;grid-template-columns:34px 1fr;gap:8px;padding:12px 14px;border:1px solid var(--pl-line);border-radius:14px}
.ev-no{font-weight:800;color:var(--pl-pine,#1b6b52);font-variant-numeric:tabular-nums}
.ev-principle{margin:0;font-size:11.5px;font-weight:800;color:#3d5a80}
.ev-stage h3{margin:2px 0 6px;font-size:15px}
.ev-stage p{margin:0 0 4px;font-size:13px;line-height:1.55;color:var(--pl-ink)}
.ev-stage b{color:var(--pl-muted);margin-right:4px}
.ev-cite{color:var(--pl-pine,#1b6b52);font-weight:700}
.ev-section{margin:18px 0 8px;font-size:15px}
.ev-design{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.ev-design li{padding:12px 14px;border-radius:14px;background:var(--pl-soft,#f6f8f7)}
.ev-design h3{margin:0 0 4px;font-size:14px}.ev-design p{margin:0;font-size:12.5px;line-height:1.55}
.ev-refs{margin:0;padding:0;list-style:none;display:grid;gap:4px;font-size:12px;line-height:1.5;color:var(--pl-muted)}
.ev-refs span{font-weight:700;color:var(--pl-ink)}
@media (max-width:760px){.ev-stages,.ev-design{grid-template-columns:1fr}.ev-panel{padding:18px}}
.ac-ai{background:linear-gradient(135deg,#f3f7ff,#f4fbf7);border:1px solid #dbe6f5;border-radius:18px;padding:12px 16px;display:grid;gap:8px}
.ac-ai-head{display:flex;align-items:center;gap:8px}
.ac-ai-head strong{font-size:15px}
.ac-ai-badge{display:inline-grid;place-items:center;min-width:26px;height:22px;padding:0 6px;border-radius:7px;background:linear-gradient(135deg,#3b6fd8,#1b6b52);color:#fff;font-size:11.5px;font-weight:800;letter-spacing:.04em}
.ac-ai-facts{display:flex;flex-wrap:wrap;gap:6px}
.ac-ai-facts span{font-size:12.5px;font-weight:700;color:#2f4a6e;background:#fff;border:1px solid #dbe6f5;border-radius:999px;padding:3px 10px}
.ac-ai-advice{margin:0;font-size:13.5px;line-height:1.55;color:var(--pl-ink)}
.ac-ai-apply{border:0;border-radius:8px;background:#2f5fb8;color:#fff;font:inherit;font-size:12.5px;font-weight:800;padding:4px 10px;cursor:pointer}
.ac-interests{display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.ac-interests .ac-row-label{margin-right:4px}
.ev-ai{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.ev-ai li{padding:12px 14px;border-radius:14px;border:1px solid #dbe6f5;background:#f6f9ff}
.ev-ai em{font-style:normal;font-size:11px;font-weight:800;color:#2f5fb8;letter-spacing:.04em}
.ev-ai h3{margin:3px 0 4px;font-size:14px}.ev-ai p{margin:0;font-size:12.5px;line-height:1.55}
@media (max-width:760px){.ev-ai{grid-template-columns:1fr}}
.ev-panel{display:flex;flex-direction:column;max-height:calc(100dvh - 40px);overflow:hidden}
.ev-tabs{display:flex;gap:4px;padding:4px;border-radius:12px;background:var(--pl-soft,#f1f4f2);margin-bottom:12px;flex-wrap:wrap}
.ev-tab{flex:1;min-height:36px;border:0;border-radius:9px;background:transparent;font:inherit;font-size:13.5px;font-weight:800;color:var(--pl-muted);cursor:pointer;white-space:nowrap}
.ev-tab[aria-selected=true]{background:var(--pl-surface,#fff);color:var(--pl-pine-dark,#0f4a38);box-shadow:0 1px 4px rgba(0,0,0,.1)}
.ev-pane{min-height:0;overflow:auto}
.ev-pane[hidden]{display:none}
.ev-stage{padding:10px 12px}.ev-stage p{font-size:12.5px;line-height:1.5}
.ev-cite{cursor:pointer}
@media (min-width:761px){.ev-refs{grid-template-columns:1fr 1fr;column-gap:18px;font-size:11.5px}}
.ac-premium-list li::before{content:"\2713";margin-right:8px;font-weight:800;color:var(--pl-pine,#1b6b52)}
.ac-goal{display:flex;align-items:center;gap:10px;min-width:0}
.ac-goal-select{flex:0 1 230px;min-width:0;padding:7px 10px;border:1px solid var(--pl-line);border-radius:10px;background:var(--pl-surface,#fff);color:inherit;font:inherit;font-size:14px;font-weight:700}
.ac-goal-note{flex:1;min-width:0;font-size:12px;line-height:1.4;color:var(--pl-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ac-goal-source{flex:none;max-width:40%;font-size:12px;color:var(--pl-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ac-goal-source a{color:inherit;font-weight:800}
/* Keep the intro on one screen: renderIntro adds these steps only while a column overflows. */
.ac-tight .ac-premium-list{display:none}
.ac-tighter .ac-lead,.ac-tighter .ac-premium-note,.ac-tighter .ac-tip-line{display:none}
.ac-tighter .ac-premium{display:flex;align-items:center;justify-content:space-between;gap:12px}
.ac-tighter .ac-premium-cta{flex:none}
.ac-tighter .ac-side{gap:8px}
.ac-tighter .ac-plan-card{padding-block:10px}
@media (max-width:900px){.ac-goal{flex-wrap:wrap}.ac-goal-select{flex-basis:100%}.ac-goal-note{white-space:normal}}
.ac-goal-group{font-weight:800;color:var(--pl-muted)}

/* ---------- Simplified intro: one calm column ---------- */
.ac-layout.ac-simple{grid-template-columns:minmax(0,640px);justify-content:center;padding-top:0}
.ac-simple .ac-col{gap:12px}
.ac-simple .ac-head{text-align:center}
.ac-simple .ac-title,.ac-simple .ac-lead{text-align:center}
.ac-simple .ac-ai{display:flex;align-items:center;gap:10px;padding:10px 14px}
.ac-simple .ac-ai .ac-ai-head strong{display:none}
.ac-simple .ac-ai .ac-ai-advice{flex:1}
.ac-simple .ac-metrics{grid-template-columns:repeat(4,1fr);gap:8px}
.ac-simple .ac-metric{align-items:center;text-align:center;padding:8px}
.ac-simple .ac-metric strong{font-size:20px}
.ac-simple .ac-metric small{display:none}
.ac-more{border-top:1px solid var(--pl-line);padding-top:8px}
.ac-more summary{cursor:pointer;font-size:13px;font-weight:700;color:var(--pl-muted);list-style:none}
.ac-more summary::before{content:'＋ '}
.ac-more[open] summary::before{content:'－ '}
.ac-more[open]{display:grid;gap:10px}
.ac-simple .ac-plan-card{padding:10px 14px;gap:8px}
.ac-simple .ac-plan-head h2{font-size:14px}
.ac-simple .ac-plan{display:flex;flex-wrap:wrap;gap:6px}
.ac-simple .ac-plan-item{display:flex!important;align-items:center;gap:6px;padding:6px 10px!important;border-radius:999px!important;background:var(--pl-soft,#f3f6f4)}
.ac-simple .ac-plan-item strong{font-size:13px}
.ac-simple .ac-plan-no{display:inline-grid;place-items:center;width:18px;height:18px;border-radius:50%;background:var(--pl-pine,#1b6b52);color:#fff;font-size:11px}
.ac-simple .ac-tip-line{text-align:center}
.ac-upsell-bar{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 14px;border-radius:12px;background:#fff7e6;border:1px solid #f3dfb4;color:#7a5200;text-decoration:none;font-size:13.5px}
.ac-upsell-bar strong{white-space:nowrap}

/* ---------- Intro as one question per screen ---------- */
.ac-wizard .ac-top{gap:12px}
.ac-steps{display:flex;gap:6px;margin:0 auto}
.ac-steps i{width:28px;height:5px;border-radius:999px;background:var(--pl-line,#dfe6e2)}
.ac-steps i[data-on=true]{background:var(--pl-pine,#1b6b52)}
.ac-ask .ac-col{gap:18px;padding-top:4vh}
.ac-question-head{display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center}
.ac-question{margin:0;font-size:clamp(24px,2.6vw,32px);letter-spacing:-.6px;line-height:1.3;outline:none}
.ac-ask .ac-lead{text-align:center;font-size:15px}
.ac-answers{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}
.ac-answer{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;min-height:64px;padding:12px 14px;border:1.5px solid var(--pl-line,#dfe6e2);border-radius:16px;background:var(--pl-surface,#fff);font:inherit;color:inherit;cursor:pointer;transition:border-color .15s,transform .15s,box-shadow .15s}
.ac-answer strong{font-size:16px}
.ac-answer span{font-size:12.5px;color:var(--pl-muted);text-align:center}
.ac-answer:hover:not([data-locked]){border-color:var(--pl-pine,#1b6b52);transform:translateY(-1px);box-shadow:0 6px 18px rgba(15,74,56,.1)}
.ac-answer[aria-checked=true]{border-color:var(--pl-pine,#1b6b52);background:#eef7f2}
.ac-answer[data-locked]{opacity:.55}
.ac-ask-nav{display:flex;justify-content:space-between;align-items:center}
.ac-ask-back,.ac-ask-skip{border:0;background:none;font:inherit;font-size:14px;font-weight:700;color:var(--pl-muted);cursor:pointer;padding:6px 0}
.ac-ask-skip{margin-left:auto;color:var(--pl-pine,#1b6b52)}
.ac-quick{align-self:center;border:1px solid var(--pl-line);background:var(--pl-surface,#fff);border-radius:999px;padding:9px 18px;font:inherit;font-size:14px;font-weight:700;color:var(--pl-pine-dark,#0f4a38);cursor:pointer}
.ac-interests-big{justify-content:center}
.ac-interests-big .ac-chip{min-height:40px;padding:0 16px;font-size:14.5px}
.ac-ask .ac-length{justify-content:center}
.ac-ask .ac-ai-facts{justify-content:center}
.ac-summary{margin:0;display:grid;gap:0;background:var(--pl-surface,#fff);border:1px solid var(--pl-line);border-radius:16px;padding:4px 16px}
.ac-summary div{display:grid;grid-template-columns:96px 1fr auto;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid #eef1ef}
.ac-summary div:last-child{border-bottom:0}
.ac-summary dt{font-size:13px;font-weight:700;color:var(--pl-muted)}.ac-summary dd{margin:0;font-weight:700}
.ac-summary-edit{border:0;background:none;color:var(--pl-pine,#1b6b52);font:inherit;font-size:13px;font-weight:700;cursor:pointer}
.ac-summary-stats{margin:0;text-align:center;font-size:13px;color:var(--pl-muted)}
@media (max-width:640px){.ac-steps i{width:18px}.ac-answers{grid-template-columns:1fr 1fr}.ac-ask .ac-col{padding-top:2vh}}
.ac-answers{grid-template-columns:repeat(auto-fit,minmax(108px,1fr))}
.ev-pager{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}.ev-pager button{border:1px solid var(--pl-line);background:var(--pl-surface,#fff);border-radius:999px;padding:4px 12px;font:inherit;font-size:12.5px;font-weight:700;color:var(--pl-muted);cursor:pointer}.ev-pager button[aria-pressed=true]{border-color:var(--pl-pine);color:var(--pl-pine-dark,#0f4a38);background:#eef7f2}.ev-ai{grid-template-columns:repeat(3,1fr)}.ev-design{grid-template-columns:repeat(3,1fr)}@media (min-width:1100px){.ev-design{grid-template-columns:repeat(4,1fr)}}.ev-design li p,.ev-ai li p{font-size:12px}

/* 학습 중 설정: 발음 보기 · 속도 · 난이도(다음 회차부터) */
.ac-tools{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px;width:100%;max-width:720px;margin:0 auto;padding:6px 18px;box-sizing:border-box}
.ac-tool{min-height:38px;padding:0 14px;border:1px solid var(--pl-line,#dfe6e2);border-radius:999px;background:var(--pl-surface,#fff);font:inherit;font-size:13.5px;font-weight:700;color:var(--pl-ink,#1c2b26);cursor:pointer}
.ac-tool[aria-pressed=true]{border-color:#1b6b52;color:#0f4a38;background:#eef7f2}
.ac-tool-field{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--pl-muted,#5d6d66)}
.ac-tool-select{min-height:38px;padding:0 10px;border:1px solid var(--pl-line,#dfe6e2);border-radius:10px;background:var(--pl-surface,#fff);font:inherit;font-size:13.5px;color:var(--pl-ink,#1c2b26)}
.ac-tool-note{font-size:12px;color:#1b6b52;font-weight:700;min-height:16px}
.ac[data-phonetics=false] .ac-reading{display:none!important}

/* 2026-10-18 야간 개선: 학습 중 도구줄 정돈, 뜻은 단어 아래, 부드러운 전환 */
.ac-meaning{margin-top:4px}
.ac-card[data-reveal=true] .ac-meaning{animation:ac-rise .35s ease both}
.ac-card[data-reveal=true] .ac-target{animation:ac-rise .38s cubic-bezier(.2,.9,.3,1.2) both}
@keyframes ac-rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.ac-tools{gap:8px}
.ac-tool,.ac-tool-select{min-height:36px;border-radius:999px;transition:border-color .15s,background-color .15s,box-shadow .15s}
.ac-tool:hover,.ac-tool-select:hover{border-color:#9cc7b4;box-shadow:0 2px 8px rgba(20,60,45,.08)}
.ac-tool:focus-visible,.ac-tool-select:focus-visible{outline:2px solid #1b6b52;outline-offset:2px}
.ac-tool-select{appearance:none;-webkit-appearance:none;padding:0 30px 0 14px;font-weight:700;cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%231b6b52' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center}
.ac-sub-head{margin:22px 0 10px;font-size:15px;font-weight:800;color:var(--pl-ink,#1c2b26);text-align:center}
.ac-goals .ac-chip{font-size:14px}
@media (prefers-reduced-motion:reduce){.ac-card[data-reveal=true] .ac-meaning,.ac-card[data-reveal=true] .ac-target{animation:none}}