/* -------------------- 课程目录和免费积分入口共用的深色界面 -------------------- */
.learning-page{max-width:1200px;margin:0 auto;padding:28px 24px 64px;color:#f4f4f5}
.learning-page [hidden],.learn-banner[hidden]{display:none!important}
.learn-hero{display:flex;align-items:center;position:relative;overflow:hidden;min-height:240px;border:1px solid #303037;border-radius:20px;background:#141419;margin-bottom:32px}
.learn-hero-copy{padding:36px 40px;position:relative;z-index:1;max-width:62%}
.learn-hero h1{font-size:clamp(28px,3vw,42px);font-weight:750;letter-spacing:-.03em;line-height:1.15;margin:0 0 14px}
.learn-hero p{font-size:15px;line-height:1.75;color:#a1a1aa;max-width:480px;margin:0}
.learn-hero>img{position:absolute;right:0;top:0;height:100%;width:55%;object-fit:cover;mask-image:linear-gradient(to right,transparent,#000 30%)}
.learn-list-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}
.learn-list-heading h2{font-size:20px;font-weight:650;margin:0}.learn-list-heading span{font-size:13px;color:#71717a}
.learn-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.learn-card{background:#18181b;border:1px solid #2c2c32;border-radius:14px;overflow:hidden;display:flex;flex-direction:column}
.learn-card-image{position:relative;aspect-ratio:16/9;background:#09090b;overflow:hidden}
.learn-card-image img{width:100%;height:100%;object-fit:cover;transition:transform .25s}
.learn-card:hover .learn-card-image img{transform:scale(1.025)}
.learn-duration{position:absolute;right:10px;bottom:10px;font-size:12px;background:#09090bd9;color:#fff;border-radius:4px;padding:2px 6px;font-variant-numeric:tabular-nums}
.learn-card-copy{padding:18px;display:flex;flex-direction:column;flex:1;gap:10px}
.learn-card h3{font-size:16px;font-weight:650;line-height:1.45;margin:0;overflow-wrap:anywhere}
.learn-card p{font-size:13px;color:#a1a1aa;line-height:1.65;margin:0;white-space:pre-line;overflow-wrap:anywhere}
.learn-reward{font-size:13px;color:#bef264;display:block}.learn-reward.is-claimed{color:#a1a1aa}
/* ---- 积分在首屏保留行高，个人状态返回后一次替换，入口文案不参与加载 ---- */
.learn-card .learn-reward{position:relative;min-height:1.6em;line-height:1.6}
.learn-card .learn-reward[aria-busy=true] .learn-reward-value{visibility:hidden}
.learn-card .learn-reward[aria-busy=true]::after{content:"";position:absolute;inset-inline-start:0;top:50%;transform:translateY(-50%);width:96px;max-width:100%;height:13px;border-radius:4px}
.learn-card .learn-reward[aria-busy=true]::after,.learn-reward-skeleton{background:linear-gradient(90deg,#27272a 0%,#3f3f46 50%,#27272a 100%);background-size:200% 100%;animation:learn-reward-loading 1.4s linear infinite}
@keyframes learn-reward-loading{from{background-position:200% 0}to{background-position:-200% 0}}
.learn-card .learn-watch-link{margin-top:auto;width:100%;text-align:center;box-sizing:border-box}
.learn-card a,.learn-sidebar a,.learn-neighbors a{color:inherit;text-decoration:none}
.learn-card h3 a:hover,.learn-sidebar h2 a:hover{text-decoration:underline}
.learn-primary,.learn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:6px;text-decoration:none;font:inherit;font-size:14px;font-weight:600;line-height:1.4;border-radius:8px;padding:11px 18px;cursor:pointer;transition:opacity .15s}
.learn-primary{color:var(--theme-color-text,#09090b);background:var(--theme-color,#fff);border:1px solid transparent}
.learn-primary:hover,.learn-secondary:hover{opacity:.85}.learn-primary:disabled,.learn-secondary:disabled{opacity:.4;cursor:default}
.learn-secondary{background:#27272a;border:1px solid #3f3f46;color:#f4f4f5}
.learn-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:240px;padding:28px 24px;border:1px solid #27272a;border-radius:14px;background:#111114;text-align:center;font-size:14px}
.learn-empty[data-state=empty]{padding-block:64px}
.learn-empty-icon{display:grid;place-items:center;width:52px;height:52px;border:1px solid #34343b;border-radius:14px;background:#1c1c21}
.learn-empty-icon img{width:28px;height:28px;opacity:.8}
.learn-empty h3{font-size:17px;font-weight:650;line-height:1.4;margin:16px 0 8px;color:#f4f4f5}
.learn-empty p{max-width:380px;margin:0 0 20px;color:#a1a1aa;line-height:1.65}
.learn-empty a{display:inline-flex;align-items:center;justify-content:center;text-decoration:none}
.learn-pagination{display:flex;gap:18px;align-items:center;justify-content:center;margin-top:32px;color:#a1a1aa;font-size:13px}
.learn-player-wrap{aspect-ratio:16/9;min-height:200px;background:#000}.learn-player-wrap>div,.learn-player-wrap iframe{width:100%;height:100%;min-height:200px;border:0;display:block}
/* ---- 播放控制与学习奖励分行，避免把进度、说明和操作挤在同一区域 ---- */
.learn-player-toolbar{display:flex;align-items:center;gap:12px;min-height:44px;padding:0 16px;background:#09090b}
.learn-playback-time{color:#a1a1aa;font-size:12px;font-variant-numeric:tabular-nums;white-space:nowrap}
.learn-timeline{display:block;flex:1;appearance:none;-webkit-appearance:none;border:0;height:24px;min-width:0;margin:0;padding:0;background:transparent;cursor:pointer;opacity:1;--learn-playback-percent:0%;--learn-timeline-fill:linear-gradient(to right,var(--theme-color,#bef264) var(--learn-playback-percent),#27272c var(--learn-playback-percent))}
.learn-timeline::-webkit-slider-runnable-track{height:4px;border-radius:99px;background:var(--learn-timeline-fill)}
.learn-timeline::-moz-range-track{height:4px;border-radius:99px;background:var(--learn-timeline-fill)}
.learn-timeline::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:10px;height:10px;margin-top:-3px;border:0;border-radius:50%;background:var(--theme-color,#bef264)}
.learn-timeline::-moz-range-thumb{width:10px;height:10px;border:0;border-radius:50%;background:var(--theme-color,#bef264)}
.learn-timeline:disabled{cursor:default}.learn-timeline:disabled::-webkit-slider-thumb{opacity:0}.learn-timeline:disabled::-moz-range-thumb{opacity:0}
.learn-playback{padding:16px 20px;border-top:1px solid #27272c;background:#111114}
.learn-member,.learn-guest{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:36px}
.learn-reward-skeleton{display:block;border-radius:4px;pointer-events:none}
.learn-reward-skeleton-text{width:160px;max-width:100%;height:14px;margin-block:3px}
.learn-reward-skeleton.learn-reward-action{width:120px;border-radius:8px}
.learn-progress-summary{display:flex;align-items:center;gap:10px;flex:1;min-width:0}.learn-progress-summary p{min-width:0}
.learn-progress-ring{display:block;width:20px;height:20px;flex-shrink:0}.learn-progress-ring svg{display:block;width:100%;height:100%;transform:rotate(-90deg)}.learn-ring-track{stroke:#35353c}.learn-ring-value{stroke:var(--theme-color,#bef264)}
.learn-playback p{color:#a1a1aa;font-size:13px;line-height:1.6;margin:0;overflow-wrap:anywhere}.learn-guest p{flex:1;min-width:0}
.learn-playback .learn-reward-action{flex-shrink:0;min-height:36px;max-width:240px;box-sizing:border-box;padding:8px 16px;font-size:13px;line-height:1.4}
.learn-playback .learn-reward-action:disabled{opacity:1;color:#8b8b95;background:#1b1b20;border-color:#36363f;cursor:not-allowed}
.learn-screen-reader{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.learn-control{display:grid;place-items:center;flex-shrink:0;width:32px;height:32px;padding:0;border:1px solid transparent;border-radius:6px;background:transparent;color:#d4d4d8;cursor:pointer}
.learn-control svg{width:19px;height:19px;pointer-events:none}
.learn-control:hover{background:#27272a;border-color:#3f3f46;color:#fff}.learn-control:disabled{opacity:.4;cursor:default}
.learn-banner{display:flex;align-items:center;position:relative;overflow:hidden;border:1px solid #3a3a43;border-radius:16px;background:#141419;margin:0 0 24px;text-decoration:none;color:#f4f4f5;min-height:128px}
.learn-banner-copy{position:relative;z-index:1;padding:24px 28px;width:65%}
.learn-banner h2{font-size:22px;font-weight:700;line-height:1.3;margin:0 0 10px;overflow-wrap:anywhere}
.learn-banner-cta{font-size:13px;color:#bef264;font-weight:650}.learn-banner:hover .learn-banner-cta{text-decoration:underline}
.learn-banner>img{position:absolute;right:0;top:0;height:100%;width:43%;object-fit:cover;mask-image:linear-gradient(to right,transparent,#000 25%)}
.learning-page :focus-visible,.learn-banner:focus-visible{outline:2px solid var(--theme-color,#bef264);outline-offset:4px}
@media(max-width:1000px){.learn-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.learn-hero-copy{padding:28px;max-width:70%}}
@media(max-width:600px){.learning-page{padding:20px 16px 48px}.learn-grid{grid-template-columns:minmax(0,1fr);gap:18px}.learn-card-copy{padding:16px}.learn-empty[data-state=empty]{padding-block:48px}.learn-playback{padding:16px}.learn-banner{min-height:132px}.learn-banner-copy{padding:20px;width:72%;background:linear-gradient(to right,#141419e6,transparent)}.learn-banner>img{width:65%}.learn-banner h2{font-size:19px}}
/* -------------------- 独立观看页：主内容与课程列表，窄屏按阅读顺序排列 -------------------- */
.learn-detail{max-width:1440px}.learn-detail-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;align-items:start}.learn-detail-main{min-width:0}
.learn-player-panel,.learn-resource,.learn-sidebar{background:#141417;border:1px solid #2c2c32;border-radius:14px;overflow:hidden}
.learn-player-panel>.learn-error{color:#fca5a5;font-size:13px;line-height:1.6;margin:0;padding:16px 20px;overflow-wrap:anywhere}
.learn-lesson-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin:28px 0}.learn-lesson-heading>div{min-width:0}
.learn-lesson-heading h1{font-size:clamp(23px,2.2vw,30px);font-weight:700;letter-spacing:-.025em;line-height:1.3;overflow-wrap:anywhere;margin:0}
.learn-lesson-heading p{font-size:14px;line-height:1.8;color:#a1a1aa;white-space:pre-line;overflow-wrap:anywhere;margin:12px 0 0}.learn-share{flex-shrink:0}.learn-share svg{width:17px;height:17px}
.learn-resource{padding:22px;margin-top:20px}.learn-resource-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px}.learn-resource h2{font-size:17px;font-weight:650;line-height:1.5;margin:0}
.learn-resource textarea{box-sizing:border-box;display:block;width:100%;min-height:180px;max-height:420px;resize:vertical;border:1px solid #34343b;border-radius:8px;padding:16px;background:#09090b;color:#d4d4d8;font:13px/1.8 ui-monospace,SFMono-Regular,Consolas,monospace;white-space:pre-wrap;overflow-wrap:anywhere}
.learn-files{list-style:none;margin:16px 0 0;padding:0}.learn-files li{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0;border-top:1px solid #2c2c32}.learn-files li:first-child{border-top:0;padding-top:0}.learn-files li:last-child{padding-bottom:0}.learn-files span{font-size:14px;overflow-wrap:anywhere;min-width:0}.learn-files a{flex-shrink:0}
.learn-neighbors{display:flex;gap:16px;margin-top:28px}.learn-neighbors:empty{display:none}.learn-neighbors a{flex:1;min-width:0;padding:16px;border:1px solid #2c2c32;border-radius:10px}.learn-neighbors a:hover{background:#18181b}.learn-neighbors span{display:block;color:#a1a1aa;font-size:12px;margin-bottom:6px}.learn-neighbors strong{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;overflow-wrap:anywhere;font-size:14px;line-height:1.6;font-weight:600}.learn-neighbor-next{text-align:right}
.learn-sidebar{padding:18px}.learn-sidebar .learn-list-heading{margin-bottom:16px}.learn-sidebar h2{font-size:17px}.learn-sidebar-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}.learn-sidebar-list li{min-width:0}
.learn-sidebar-list a{display:grid;grid-template-columns:100px minmax(0,1fr);gap:12px;align-items:center;padding:8px;border:1px solid transparent;border-radius:9px}.learn-sidebar-list a:hover{background:#202025}.learn-sidebar-list a[aria-current=page]{border-color:var(--theme-color,#bef264);background:#202025}
.learn-sidebar-image{position:relative;aspect-ratio:16/9;overflow:hidden;border-radius:5px;background:#09090b}.learn-sidebar-image img{width:100%;height:100%;object-fit:cover}.learn-sidebar-image .learn-duration{font-size:10px;right:4px;bottom:4px;padding:1px 3px}.learn-sidebar h3{font-size:13px;line-height:1.5;font-weight:600;margin:0 0 6px;overflow-wrap:anywhere;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.learn-sidebar .learn-reward{font-size:11px}.learn-library-link{box-sizing:border-box;width:100%;margin-top:18px}
@media(min-width:1001px){.learn-sidebar{position:sticky;top:90px;max-height:calc(100dvh - 118px);overflow-y:auto}}
@media(max-width:1000px){.learn-detail-grid{grid-template-columns:minmax(0,1fr);gap:28px}.learn-sidebar-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.learn-lesson-heading{margin:22px 0;gap:12px;flex-wrap:wrap}.learn-share{padding:8px 12px}.learn-resource{padding:18px}.learn-sidebar-list{grid-template-columns:minmax(0,1fr)}.learn-neighbors{gap:10px}.learn-neighbors a{padding:12px}.learn-files{margin-top:14px}.learn-files a{padding:8px 10px}}
@media(max-width:768px){.learn-hero{min-height:144px;align-items:center;margin-bottom:24px;border-radius:14px}.learn-hero-copy{box-sizing:border-box;width:78%;max-width:none;padding:22px 20px;background:none}.learn-hero h1{font-size:26px;margin-bottom:10px}.learn-hero-copy p{font-size:13px;line-height:1.6}.learn-hero>img{top:0;width:48%;height:100%;opacity:.75;mask-image:linear-gradient(to right,transparent,#000 55%)}.learn-sidebar{border:0;border-radius:0;padding:0;background:transparent;overflow:visible}.learn-sidebar-list{grid-template-columns:minmax(0,1fr);gap:12px}.learn-sidebar-list a{grid-template-columns:112px minmax(0,1fr);padding:10px;gap:14px}.learn-sidebar h3{font-size:14px}.learn-sidebar .learn-reward{font-size:12px}.learn-player-toolbar{padding:0 10px;gap:10px;min-height:44px}.learn-member,.learn-guest{gap:16px}.learn-playback .learn-reward-action{width:100%;max-width:none;padding:8px 12px}.learn-member,.learn-guest{flex-direction:column;align-items:stretch}.learn-member .learn-progress-summary{flex:none;width:100%}.learn-guest p{flex:none}.learn-lesson-heading{flex-direction:column;align-items:stretch;gap:16px}.learn-share{width:100%;box-sizing:border-box}}
/* ---- 只扩展视频与播放栏；宽屏使用页面布局，全屏不挪动 iframe ---- */
.learn-player-frame{background:#000}.learn-player-frame::backdrop{background:#000}
.learn-detail.is-wide{max-width:none}.learn-detail.is-wide .learn-detail-grid{grid-template-columns:minmax(0,1fr)}.learn-detail.is-wide .learn-player-wrap{max-height:calc(100dvh - 180px)}
.learn-detail.is-wide .learn-sidebar{position:static;max-height:none}.learn-detail.is-wide .learn-sidebar-list{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.learn-screen-open{overflow:hidden!important}
.learn-player-frame.is-immersive{position:fixed;inset:0;z-index:10000;display:flex;flex-direction:column;justify-content:center;box-sizing:border-box;width:100%;height:100%;height:100dvh;padding-top:env(safe-area-inset-top);background:#000}
.learn-player-frame.is-immersive .learn-player-wrap{flex:1;aspect-ratio:auto;min-height:0;max-height:none}.learn-player-frame.is-immersive .learn-player-wrap>div,.learn-player-frame.is-immersive .learn-player-wrap iframe{min-height:0}
.learn-player-frame.is-immersive .learn-player-toolbar{flex-shrink:0;padding-bottom:env(safe-area-inset-bottom);padding-left:max(10px,env(safe-area-inset-left));padding-right:max(10px,env(safe-area-inset-right))}
@media(prefers-reduced-motion:reduce){.learn-card-image img{transition:none}.learn-card:hover .learn-card-image img{transform:none}.learn-card .learn-reward[aria-busy=true]::after,.learn-reward-skeleton{animation:none}}