/* 클래버 — 수강생 화면 틀(유틸 바·헤더·푸터·모바일 아래 결제 바)과 견본 화면(홈·강의 탐색·강의 상세·VOD 플레이어·로그인).
   공유 파일: 담당은 고치지 말고 자기 CSS(cat.css · buy.css · learn.css · acct.css)에 접두어 클래스로.
   플레이어 모양(.player · .pb-* · .pl-*)은 미리보기 재생(cat)도 그대로 쓴다. */

/* ════ 화면 틀 ═══════════════ */
.hide-s { }
@media (max-width: 560px) { .hide-s { display: none !important; } }
.show-m { display: none !important; }
@media (max-width: 760px) { .hide-m { display: none !important; } .show-m { display: inline-grid !important; } }
.site-header { position: sticky; top: 0; z-index: 40; background: var(--surface); border-bottom: 1px solid var(--line); }
.site-header.is-scrolled { box-shadow: var(--shadow); }
.util-bar { background: var(--surface-3); border-bottom: 1px solid var(--line); font-size: var(--fs-xs); }
.util-bar .wrap { display: flex; justify-content: flex-end; align-items: center; gap: 2px; min-height: 2.25rem; }
.util-bar a, .util-bar button { display: inline-flex; align-items: center; gap: 4px; min-height: 2.25rem; padding: 0 .55rem; color: var(--ink-2); font-weight: 600; font-size: var(--fs-xs); }
.util-bar a:hover, .util-bar button:hover { color: var(--ink); text-decoration: underline; }
.util-bar .ic { width: .9rem; height: .9rem; }
.util-hi { margin-right: auto; color: var(--ink-3); }
.head-row { min-height: var(--header-h); display: flex; align-items: center; gap: var(--sp-4); }
.gnb { display: flex; gap: 2px; }
.gnb a { min-height: var(--tap); display: inline-flex; align-items: center; padding: 0 .7rem; border-radius: var(--r-sm); font-weight: 700; color: var(--ink-2); white-space: nowrap; }
.gnb a:hover { background: var(--surface-2); color: var(--ink); }
.gnb a[aria-current="page"] { color: var(--accent-ink); background: var(--accent-soft); }
.head-search { position: relative; flex: 1 1 14rem; max-width: 20rem; margin-left: auto; }
.head-search .input { min-height: 2.6rem; padding-right: 2.8rem; border-radius: var(--r-pill); background: var(--surface-3); border-color: var(--line-strong); }
.head-search .icon-btn { position: absolute; right: 2px; top: 50%; transform: translateY(-50%); width: 2.5rem; height: 2.5rem; border-radius: var(--r-pill); }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: var(--sp-2); }
.head-search + .header-actions { margin-left: 0; }
.header-actions .icon-btn { position: relative; }
.dot-cnt { position: absolute; top: 4px; right: 2px; min-width: 1.15rem; height: 1.15rem; padding: 0 4px; border-radius: var(--r-pill); background: var(--sale); color: var(--on-accent); font-size: .6875rem; font-weight: 800; display: grid; place-items: center; }
.menu-btn { display: none; }
@media (max-width: 1100px) { .gnb { display: none; } .menu-btn { display: inline-grid; } }
.site-menu { border-top: 1px solid var(--line); background: var(--surface); max-height: calc(100vh - var(--header-h)); overflow-y: auto; }
.site-menu .wrap { display: grid; grid-template-columns: minmax(0, 1fr) 18rem; gap: var(--sp-5); padding-top: var(--sp-4); padding-bottom: var(--sp-5); }
.site-menu-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2px var(--sp-3); }
.site-menu-list a { display: flex; align-items: center; gap: 10px; min-height: var(--tap); padding: 0 .6rem; border-radius: var(--r-sm); font-weight: 650; }
.site-menu-list a .ic { color: var(--accent-ink); }
.site-menu-list a:hover { background: var(--surface-2); }
.site-menu-list a[aria-current="page"] { background: var(--accent-soft); color: var(--accent-ink); }
.site-menu-cta { display: flex; flex-direction: column; gap: var(--sp-2); }
@media (max-width: 760px) { .site-menu .wrap { grid-template-columns: 1fr; } .site-menu-list { grid-template-columns: 1fr; } }
.main { min-height: 60vh; }
.site-footer { background: var(--night); color: var(--on-night-2); font-size: var(--fs-sm); padding: var(--sp-7) 0 var(--sp-6); margin-top: var(--sp-8); }
.f-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr .8fr; gap: var(--sp-6); }
.f-promise { margin-top: var(--sp-3); color: var(--on-night); font-size: var(--fs-md); font-weight: 600; max-width: 24rem; line-height: 1.6; }
.f-title { font-weight: 750; color: var(--on-night); margin-bottom: var(--sp-2); }
.f-contact p { margin-bottom: 4px; }
.f-contact a:hover, .f-links a:hover { color: var(--on-night); text-decoration: underline; }
.f-tel { display: inline-flex; align-items: center; gap: 8px; font-size: var(--fs-h4); font-weight: 800; color: var(--on-night); min-height: var(--tap); }
.f-tel .ic { color: var(--accent-on-night); }
.f-links { display: flex; flex-direction: column; }
.f-links a { min-height: 2.2rem; display: inline-flex; align-items: center; }
.f-links strong { color: var(--on-night); }
.f-biz { margin-top: var(--sp-6); padding-top: var(--sp-4); border-top: 1px solid var(--night-line); line-height: 1.85; font-size: var(--fs-xs); }
.f-demo { color: var(--accent-on-night); }
@media (max-width: 1000px) { .f-top { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .f-top { grid-template-columns: 1fr; gap: var(--sp-5); } }
/* 모바일 아래 고정 바(강의 상세 결제 등) — page_start(['mbar' => HTML]) */
.mbar { display: none; }
@media (max-width: 960px) {
  body.has-mbar { --mcta-h: 4.25rem; padding-bottom: calc(var(--mcta-h) + env(safe-area-inset-bottom)); }
  .mbar { display: flex; align-items: center; gap: var(--sp-3); position: fixed; left: 0; right: 0; bottom: 0; z-index: 45; padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); background: var(--surface); border-top: 1px solid var(--line-strong); box-shadow: var(--shadow-lg); }
  .mbar-price { display: flex; flex-direction: column; line-height: 1.25; flex: 1 1 auto; min-width: 0; }
  .mbar-price strong { font-size: var(--fs-lg); font-weight: 850; }
  .mbar .btn { flex: 0 0 auto; }
}
.band-paper { background: var(--paper); }
.section-sm { padding-top: var(--sp-7); padding-bottom: var(--sp-3); }
.err-list { margin-top: 4px; padding-left: 1.1em; list-style: disc; }
.err-list a { text-decoration: underline; }
.sk-w0 { width: 92%; } .sk-w1 { width: 78%; } .sk-w2 { width: 64%; } .sk-w3 { width: 50%; }
.err-logo { margin-bottom: var(--sp-4); }
.demo-box { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin-top: var(--sp-4); padding: .8rem 1rem; border-radius: var(--r-sm); background: var(--surface-2); font-size: var(--fs-sm); color: var(--ink-2); }
.chip-sm { min-height: 2.5rem; padding: 0 .85rem; font-size: var(--fs-sm); border-width: 1.5px; }
.chip .ic { width: 1rem; height: 1rem; }
.badge-on-dark { background: var(--night-2); color: var(--on-night); }
.badge-on-dark .ic { color: var(--accent-on-night); }
a.badge { min-height: 1.9rem; }
a.badge:hover { filter: brightness(.92); }
.avatar.lg { width: 3.5rem; height: 3.5rem; font-size: var(--fs-h4); }

/* ════ 홈 ═══════════════ */
.hero { position: relative; overflow: hidden; background: var(--bg); min-height: 36rem; display: flex; align-items: center; }
.hero-media { position: absolute; inset: 0 0 0 30%; overflow: hidden; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; object-position: 35% center; }
@media (prefers-reduced-motion: no-preference) { .hero-media img { animation: slowzoom 24s ease-in-out infinite alternate; } }
@keyframes slowzoom { from { transform: scale(1); } to { transform: scale(1.07); } }
.hero::after { content: ""; position: absolute; inset: 0; background: var(--hero-shade); pointer-events: none; }
.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1fr) 21rem; gap: var(--sp-6); align-items: end; padding-top: var(--sp-7); padding-bottom: var(--sp-7); }
.hero h1 { font-size: 3.25rem; font-weight: 850; letter-spacing: -0.045em; line-height: 1.15; }
.hero h1 .hl { color: var(--accent-ink); }
.hero .lead { margin-top: var(--sp-4); max-width: 32rem; }
.hero-search { position: relative; display: flex; flex-wrap: wrap; gap: var(--sp-2); margin-top: var(--sp-5); max-width: 34rem; }
.hero-search .input { flex: 1 1 14rem; min-height: 3.4rem; padding-left: 2.9rem; border-radius: var(--r); box-shadow: var(--shadow); font-size: var(--fs-lg); }
.hero-search .hs-ic { position: absolute; left: 1rem; top: 1.05rem; color: var(--ink-3); }
.hero-search .btn { min-height: 3.4rem; padding: 0 1.6rem; border-radius: var(--r); }
.hero-search .field-err { width: 100%; }
.hero-chips { display: flex; flex-wrap: wrap; gap: var(--sp-2); margin-top: var(--sp-4); max-width: 36rem; }
.hero-chips .chip { background: var(--glass); }
.resume-card { background: var(--surface); border-radius: var(--r-lg); padding: var(--sp-5); box-shadow: var(--shadow-lg); display: flex; flex-direction: column; gap: .6rem; }
.resume-card h2 { font-size: var(--fs-h4); }
.rc-k { display: inline-flex; align-items: center; gap: 6px; font-size: var(--fs-sm); font-weight: 750; color: var(--accent-ink); }
.rc-next { font-size: var(--fs-sm); font-weight: 650; color: var(--ink-2); }
.hero-stats { display: grid; gap: var(--sp-2); background: var(--night); color: var(--on-night-2); border-radius: var(--r-lg); padding: var(--sp-5); box-shadow: var(--shadow-lg); }
.hero-stats p { display: flex; align-items: baseline; gap: 8px; }
.hero-stats b { font-size: 2rem; font-weight: 850; color: var(--on-night); letter-spacing: -0.03em; }
@media (max-width: 960px) {
  .hero { min-height: 0; display: block; }
  .hero-media { position: relative; inset: auto; height: 17rem; }
  .hero::after { top: 0; bottom: auto; height: 17rem; background: var(--hero-shade-m); }
  .hero-inner { grid-template-columns: 1fr; padding-top: 0; margin-top: -4rem; padding-bottom: var(--sp-6); }
  .hero h1 { font-size: 2.35rem; }
  .hero-stats { grid-template-columns: repeat(3, minmax(0, 1fr)); padding: var(--sp-4); }
  .hero-stats p { flex-direction: column; gap: 0; }
  .hero-stats b { font-size: 1.5rem; }
}
.coupon-band-wrap { margin-top: var(--sp-6); }
.coupon-band { display: flex; align-items: center; gap: var(--sp-4); flex-wrap: wrap; padding: 1rem 1.25rem; border-radius: var(--r-lg); background: var(--accent-soft); border: 1.5px dashed var(--accent); }
.coupon-band .ico-box { background: var(--accent); color: var(--on-accent); }
.cb-title { font-weight: 800; font-size: var(--fs-lg); }
.cb-sub { font-size: var(--fs-sm); color: var(--ink-2); }
.cat-tiles { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: var(--sp-3); }
.cat-tile { display: flex; flex-direction: column; gap: 6px; padding: var(--sp-4); border-radius: var(--r); background: var(--surface); border: 1px solid var(--line); min-height: 8.5rem; transition: transform var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease), border-color var(--t-mid) var(--ease); }
.cat-tile:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--accent); }
.ct-name { font-weight: 800; margin-top: auto; }
.ct-n { font-size: var(--fs-sm); color: var(--ink-3); }
@media (max-width: 1000px) { .cat-tiles { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 520px) { .cat-tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); } .cat-tile { min-height: 7rem; } }
.how-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--sp-7); align-items: center; }
.how-media img { width: 100%; border-radius: var(--r-lg); aspect-ratio: 4 / 3; object-fit: cover; }
.how-list { display: grid; gap: var(--sp-4); margin-top: var(--sp-5); }
.how-list li { display: flex; gap: var(--sp-3); align-items: flex-start; }
.how-list h3 { font-size: var(--fs-lg); }
.how-list p { color: var(--ink-3); }
@media (max-width: 900px) { .how-grid { grid-template-columns: 1fr; gap: var(--sp-5); } }
.teach-band { position: relative; overflow: hidden; background: var(--night); color: var(--on-night-2); margin-top: var(--sp-6); }
.teach-media { position: absolute; inset: 0 0 0 45%; }
.teach-media img { width: 100%; height: 100%; object-fit: cover; opacity: .55; }
.teach-band::after { content: ""; position: absolute; inset: 0; background: var(--teach-shade); pointer-events: none; }
.teach-inner { position: relative; z-index: 1; padding-top: var(--sp-8); padding-bottom: var(--sp-8); max-width: 44rem; margin-left: 0; }
.teach-inner h2 { color: var(--on-night); font-size: var(--fs-h2); font-weight: 850; letter-spacing: -0.03em; }
.teach-inner p:not(.eyebrow-on-dark) { margin: var(--sp-3) 0 var(--sp-5); font-size: var(--fs-lg); max-width: 34rem; }
@media (max-width: 760px) { .teach-media { inset: 0; } .teach-band::after { background: var(--teach-shade-m); } .teach-inner { padding-top: var(--sp-7); padding-bottom: var(--sp-7); } }
@media (min-width: 761px) { .teach-inner { padding-left: max(var(--gutter), calc((100vw - var(--wrap)) / 2)); max-width: calc(44rem + max(var(--gutter), calc((100vw - var(--wrap)) / 2))); } }
.notice-list > li { padding: 0; }
.notice-list a { display: flex; align-items: center; gap: var(--sp-3); width: 100%; padding: .85rem 1rem; min-height: 3.2rem; }
.notice-list a:hover { background: var(--surface-3); }
.nl-title { font-weight: 650; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
@media (max-width: 560px) { .notice-list a { flex-wrap: wrap; gap: 4px var(--sp-2); } .nl-title { white-space: normal; flex-basis: 100%; order: 2; } .notice-list time { order: 1; margin-left: auto; } }

/* ════ 강의 탐색 ═══════════════ */
.cat-chips { margin: var(--sp-2) 0 var(--sp-4); }
.filter-bar { display: flex; flex-wrap: wrap; gap: var(--sp-2); align-items: center; padding: var(--sp-3); background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); }
.fb-search { flex: 1 1 16rem; }
.fb-sel { flex: 0 1 11rem; }
.result-count { margin: var(--sp-5) 0 var(--sp-4); color: var(--ink-2); }
@media (max-width: 560px) { .fb-sel { flex: 1 1 45%; } .filter-bar .btn { flex: 1 1 100%; } }

/* ════ 강의 상세 ═══════════════ */
.cd-hero { background: var(--night); color: var(--on-night-2); padding: var(--sp-5) 0 var(--sp-7); }
.cd-hero .crumbs { color: var(--on-night-2); }
.cd-hero .crumbs a:hover { color: var(--on-night); }
.cd-hero-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: var(--sp-6); align-items: center; }
.cd-tags { margin: var(--sp-2) 0; }
.cd-hero .badge-outline { background: transparent; color: var(--on-night); border-color: var(--on-night-2); }
.cd-hero h1 { color: var(--on-night); font-size: 2.25rem; font-weight: 850; letter-spacing: -0.035em; }
.cd-summary { margin: var(--sp-3) 0 var(--sp-4); font-size: var(--fs-lg); color: var(--on-night); opacity: .92; }
.cd-inst { display: flex; align-items: center; gap: 8px; margin-top: var(--sp-4); color: var(--on-night); font-weight: 650; }
.cd-hero-media { position: relative; }
.cd-hero-media .thumb { box-shadow: var(--shadow-lg); }
.cd-preview { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); display: inline-flex; align-items: center; gap: 8px; min-height: 3.2rem; padding: 0 1.3rem; border-radius: var(--r-pill); background: var(--surface); color: var(--ink); font-weight: 800; box-shadow: var(--shadow-lg); }
.cd-preview .ic { color: var(--accent); width: 1.4rem; height: 1.4rem; }
.cd-preview:hover { background: var(--accent-soft); }
@media (max-width: 900px) { .cd-hero-grid { grid-template-columns: 1fr; } .cd-hero h1 { font-size: 1.75rem; } .cd-hero-media { order: -1; } }
.cd-body { display: grid; grid-template-columns: minmax(0, 1fr) 22rem; gap: var(--sp-6); align-items: start; margin-top: var(--sp-5); }
.cd-tabs { position: sticky; top: calc(var(--header-h) + 2.3rem); z-index: 5; background: var(--bg); margin-bottom: var(--sp-2); }
.cd-sec { padding: var(--sp-5) 0; border-bottom: 1px solid var(--line); scroll-margin-top: 9rem; }
.cd-sec:last-child { border-bottom: 0; }
.cd-sec h2 { font-size: var(--fs-h3); margin-bottom: var(--sp-3); }
.cd-two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-3); margin-top: var(--sp-4); }
.cd-two h3 { display: flex; align-items: center; gap: 6px; font-size: var(--fs-md); }
.cd-two h3 .ic { color: var(--accent); }
.ic-lock { color: var(--ink-3); display: inline-flex; }
.inst-card { display: flex; gap: var(--sp-4); align-items: flex-start; }
.other-list { display: grid; gap: 4px; margin-top: 4px; }
.rv-sum { display: flex; gap: var(--sp-6); align-items: center; flex-wrap: wrap; }
.rv-avg { display: flex; flex-direction: column; align-items: center; gap: 4px; min-width: 7rem; }
.rv-avg b { font-size: 2.6rem; line-height: 1; font-weight: 850; }
.rv-dist { flex: 1 1 14rem; display: grid; gap: 6px; }
.rv-dist li { display: grid; grid-template-columns: 2.4rem minmax(0, 1fr) 2rem; gap: var(--sp-2); align-items: center; }
.rv-dist .pbar-fill { background: var(--star); }
.rv-list { display: grid; gap: var(--sp-3); margin-top: var(--sp-4); }
.rv-item { padding: var(--sp-4); border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); }
.rv-tip { display: flex; gap: 6px; align-items: center; margin-top: var(--sp-2); color: var(--accent-ink); font-weight: 600; }
.cd-side { position: sticky; top: calc(var(--header-h) + 3rem); }
.buy-card { display: flex; flex-direction: column; gap: var(--sp-3); box-shadow: var(--shadow); }
.buy-lines { display: grid; gap: 6px; padding: var(--sp-3) 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); font-size: var(--fs-sm); }
.buy-lines > div { display: flex; justify-content: space-between; gap: var(--sp-3); }
.buy-lines dt { color: var(--ink-3); }
.buy-lines .bl-total { font-size: var(--fs-md); font-weight: 800; padding-top: 6px; border-top: 1px dashed var(--line); }
.buy-lines .bl-total dt { color: var(--ink); }
.coupon-form { display: flex; flex-direction: column; gap: 6px; }
.buy-points { display: grid; gap: 4px; color: var(--ink-3); }
.buy-points li { display: flex; align-items: center; gap: 6px; }
@media (max-width: 960px) { .cd-body { grid-template-columns: 1fr; } .cd-side { position: static; order: -1; } .cd-tabs { top: var(--header-h); } }
@media (max-width: 560px) { .cd-two { grid-template-columns: 1fr; } }

/* ════ VOD 플레이어(미리보기 재생도 같이) ═══════════════ */
.player { position: relative; background: var(--video-bg); border-radius: var(--r); overflow: hidden; color: var(--on-night); box-shadow: var(--shadow-lg); }
.player:focus-visible { box-shadow: var(--focus); }
.player-stage { position: relative; aspect-ratio: 16 / 9; background: var(--video-bg); }
.player-stage video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.player-big { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); width: 4.5rem; height: 4.5rem; border-radius: 50%; display: grid; place-items: center; background: var(--overlay-2); color: var(--on-night); border: 2px solid var(--ring-soft); transition: opacity var(--t-mid) var(--ease), transform var(--t-short) var(--ease); }
.player-big .ic { width: 2rem; height: 2rem; }
.player-big:hover { transform: translate(-50%, -50%) scale(1.05); background: var(--accent); }
.player .i-pause { display: none; }
.player .is-playing .i-play { display: none; }
.player .is-playing .i-pause { display: inline-block; }
.player.is-playing .player-big { opacity: 0; }
.player.is-playing .player-stage:hover .player-big, .player.is-playing .player-big:focus-visible { opacity: 1; }
.player-cap { position: absolute; left: 6%; right: 6%; bottom: 8%; text-align: center; }
.player-cap span { display: inline-block; padding: .35rem .7rem; border-radius: 6px; background: var(--overlay); color: var(--on-night); font-size: var(--fs-sm); line-height: 1.5; }
.player-over { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: var(--sp-3); padding: var(--sp-4); text-align: center; background: var(--overlay); }
.po-title { display: inline-flex; align-items: center; gap: 8px; font-size: var(--fs-lg); font-weight: 800; color: var(--on-night); }
.po-title .ic { color: var(--accent-on-night); }
.po-sub { color: var(--on-night-2); font-size: var(--fs-sm); min-height: 1.2em; }
.player-bar { display: flex; align-items: center; gap: 4px; padding: .4rem .6rem; background: var(--night); border-top: 1px solid var(--night-line); flex-wrap: wrap; }
.pb-btn { display: inline-grid; place-items: center; width: var(--tap); height: var(--tap); border-radius: var(--r-sm); color: var(--on-night); }
.pb-btn:hover { background: var(--night-2); }
.pb-btn:disabled { opacity: .5; cursor: not-allowed; }
.pb-btn[aria-pressed="true"] { background: var(--night-2); color: var(--accent-on-night); }
.pb-time { font-size: var(--fs-sm); color: var(--on-night-2); padding: 0 .4rem; white-space: nowrap; }
.pb-seek { flex: 1 1 8rem; min-width: 6rem; height: var(--tap); background: transparent; appearance: none; -webkit-appearance: none; cursor: pointer; }
.pb-seek::-webkit-slider-runnable-track { height: .35rem; border-radius: var(--r-pill); background: linear-gradient(90deg, var(--accent-on-night) var(--seek, 0%), var(--night-line) var(--seek, 0%)); }
.pb-seek::-webkit-slider-thumb { -webkit-appearance: none; width: 1rem; height: 1rem; border-radius: 50%; background: var(--on-night); margin-top: -.33rem; }
.pb-seek::-moz-range-track { height: .35rem; border-radius: var(--r-pill); background: var(--night-line); }
.pb-seek::-moz-range-progress { height: .35rem; border-radius: var(--r-pill); background: var(--accent-on-night); }
.pb-seek::-moz-range-thumb { width: 1rem; height: 1rem; border-radius: 50%; background: var(--on-night); border: 0; }
.pb-seek:focus-visible { box-shadow: none; outline: 2px solid var(--accent-on-night); outline-offset: 2px; }
.pb-speed { min-height: 2.4rem; padding: 0 .5rem; border-radius: var(--r-sm); background: var(--night-2); color: var(--on-night); border: 1px solid var(--night-line); font-size: var(--fs-sm); }
.player-status { padding: .45rem .9rem; font-size: var(--fs-xs); color: var(--on-night-2); background: var(--night); border-top: 1px solid var(--night-line); }
.player-locked .player-stage { display: grid; place-items: center; }
@media (max-width: 560px) { .hide-xs { display: none !important; } .pb-seek { order: 10; flex-basis: 100%; } .pb-time { margin-right: auto; } }
.player:fullscreen { border-radius: 0; display: flex; flex-direction: column; justify-content: center; }
.player:fullscreen .player-stage { aspect-ratio: auto; flex: 1 1 auto; }
.player:fullscreen .player-stage video { object-fit: contain; }
/* 플레이어 화면 틀 */
.pl-top { background: var(--night); color: var(--on-night-2); padding: var(--sp-3) 0 var(--sp-4); }
.pl-top-row { display: grid; grid-template-columns: minmax(0, 1fr) 20rem; gap: var(--sp-5); align-items: end; }
.pl-top .back-link { color: var(--on-night-2); }
.pl-top .back-link:hover { color: var(--on-night); }
.pl-top h1 { color: var(--on-night); font-size: var(--fs-h3); letter-spacing: -0.03em; }
.pl-sub { font-size: var(--fs-sm); }
.pl-sub strong { color: var(--on-night); }
.pl-prog-k { display: flex; justify-content: space-between; font-size: var(--fs-sm); margin-bottom: 4px; }
.pl-prog-k strong { color: var(--on-night); font-size: var(--fs-lg); }
.pl-gap { margin-top: 4px; color: var(--accent-on-night); }
.pl-grid { display: grid; grid-template-columns: minmax(0, 1fr) 21rem; gap: var(--sp-5); align-items: start; margin-top: var(--sp-5); }
.pl-main { display: flex; flex-direction: column; gap: var(--sp-3); min-width: 0; }
.pl-info { padding: var(--sp-2) 0; }
.pl-sec { font-size: var(--fs-sm); color: var(--accent-ink); font-weight: 750; }
.pl-lesson { font-size: var(--fs-h4); margin: 4px 0 var(--sp-2); }
.pl-nav { display: flex; gap: var(--sp-2); flex-wrap: wrap; margin-top: var(--sp-4); }
.pl-nav .btn:last-child { margin-left: auto; }
.kbd-help { display: flex; gap: 6px; align-items: flex-start; margin-top: var(--sp-4); }
.kbd-help .ic { margin-top: 3px; }
.pl-list { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: var(--sp-4); max-height: calc(100vh - var(--header-h) - 3rem); overflow-y: auto; position: sticky; top: calc(var(--header-h) + 3rem); }
.pl-list h2 { font-size: var(--fs-lg); }
.pl-sec-h { margin: var(--sp-4) 0 var(--sp-2); font-size: var(--fs-sm); font-weight: 800; color: var(--ink-2); }
.pl-lessons { display: grid; gap: 2px; }
.pl-lessons a { display: grid; grid-template-columns: 1.6rem minmax(0, 1fr) auto; gap: .5rem; align-items: center; padding: .55rem .5rem; border-radius: var(--r-sm); min-height: var(--tap); }
.pl-lessons a:hover { background: var(--surface-3); }
.pl-lessons .no { color: var(--ink-3); font-weight: 700; font-size: var(--fs-sm); }
.pl-lessons .t { font-size: var(--fs-sm); font-weight: 650; line-height: 1.4; }
.pl-lessons .t small { display: block; color: var(--ink-3); font-weight: 500; font-size: var(--fs-xs); }
.pl-lessons li.is-cur a { background: var(--accent-soft); box-shadow: inset 0 0 0 1.5px var(--accent); }
@media (max-width: 1000px) { .pl-grid { grid-template-columns: 1fr; } .pl-list { position: static; max-height: none; } .pl-top-row { grid-template-columns: 1fr; } }

/* ════ 로그인(수강생·강사) ═══════════════ */
.auth-wrap { display: grid; grid-template-columns: minmax(0, 28rem) minmax(0, 1fr); gap: var(--sp-7); align-items: start; }
.auth-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: var(--sp-6); box-shadow: var(--shadow); }
.auth-card h1 { font-size: var(--fs-h2); }
.auth-card .lead { font-size: var(--fs-md); color: var(--ink-3); margin: 6px 0 var(--sp-3); }
.auth-links { display: flex; justify-content: center; gap: var(--sp-2); flex-wrap: wrap; margin-top: var(--sp-4); font-size: var(--fs-sm); }
.auth-links a { min-height: 2.75rem; display: inline-flex; align-items: center; padding: 0 .3rem; color: var(--ink-2); text-decoration: underline; text-underline-offset: 3px; }
.auth-links span { display: inline-flex; align-items: center; color: var(--line-strong); }
.auth-side img { width: 100%; border-radius: var(--r-lg); aspect-ratio: 3 / 2; object-fit: cover; }
.auth-points { display: grid; gap: var(--sp-3); margin-top: var(--sp-5); }
.auth-points li { display: flex; gap: var(--sp-3); align-items: flex-start; }
.auth-points li > .ic { color: var(--accent); margin-top: 3px; }
.auth-points strong { display: block; }
.auth-points span { color: var(--ink-3); }
.auth-points strong { color: var(--ink); }
@media (max-width: 900px) { .auth-wrap { grid-template-columns: 1fr; gap: var(--sp-5); } .auth-card { padding: var(--sp-5); } }
.todo { margin-top: var(--sp-3); }