@import "https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700;800;900&display=swap";.landing{background:var(--bg-primary);color:var(--text-primary);font-feature-settings:"tnum" on;min-height:100vh;font-family:Poppins,-apple-system,BlinkMacSystemFont,PingFang SC,sans-serif}.landing-header{z-index:100;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:var(--bg-header);border-bottom:1px solid var(--border-color);position:sticky;top:0}.hdr-inner{justify-content:space-between;align-items:center;max-width:1180px;margin:0 auto;padding:10px 24px;display:flex}.hdr-brand img{width:auto;height:80px;display:block}.hdr-cta{align-items:center;gap:18px;display:flex}.hdr-link{color:var(--text-primary);padding:8px 4px;font-size:16px;font-weight:600;text-decoration:none;transition:color .15s}.hdr-link:hover{color:var(--accent)}.hdr-btn{color:#fff;letter-spacing:.5px;background:var(--gradient-primary);border-radius:28px;padding:12px 26px;font-size:16px;font-weight:700;text-decoration:none;transition:transform .15s,box-shadow .15s;box-shadow:0 6px 18px #0f766e40}.hdr-btn:hover{transform:translateY(-2px);box-shadow:0 10px 24px #0f766e40}.section{text-align:center;max-width:1180px;margin:0 auto;padding:80px 24px}.sec-title{color:var(--text-primary);letter-spacing:-.3px;margin:0 0 12px;font-size:32px;font-weight:700}.sec-desc{color:var(--text-secondary);margin:0 0 40px;font-size:15px}.hero{text-align:center;padding:100px 24px 80px;position:relative;overflow:hidden}.hero-content{z-index:1;max-width:1180px;margin:0 auto;position:relative}.hero-blob{filter:blur(80px);opacity:.45;pointer-events:none;z-index:0;border-radius:50%;position:absolute}.hero-blob-1{width:480px;height:480px;top:-100px;left:-120px}.hero-blob-2{width:420px;height:420px;top:80px;right:-120px}.hero-blob-3{width:360px;height:360px;bottom:-100px;left:50%;transform:translate(-50%)}.hero-sub{color:var(--text-secondary);margin:0 0 28px;font-size:16px;font-weight:400}.hero-eyebrow{letter-spacing:3px;color:var(--accent);text-transform:uppercase;margin:0 0 28px;font-size:12.5px;font-weight:500}.hero-title{letter-spacing:-1px;flex-wrap:wrap;justify-content:center;align-items:baseline;gap:14px;margin:0 0 32px;line-height:1.1;display:flex}.hero-art{color:var(--accent);font-family:Poppins,PingFang SC,sans-serif;font-size:96px;font-weight:900;display:inline-block}.hero-art-sep{color:var(--accent-light);margin:0 4px;font-size:72px;font-weight:200}.hero-art-2{color:var(--text-primary);-webkit-text-fill-color:transparent;letter-spacing:-1.5px;background:#0f766e;-webkit-background-clip:text;background-clip:text;font-size:68px;font-weight:800}.hero-sep{color:var(--accent-light);font-weight:300}.hero-tags{flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:56px;display:flex}.tag{color:var(--accent);background:var(--bg-tertiary);border-radius:18px;padding:5px 16px;font-size:13px;font-weight:500}.hero-stats{grid-template-columns:repeat(4,1fr);gap:18px;max-width:760px;margin:0 auto;display:grid}.stat{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid var(--border-color);background:#ffffffd9;border-radius:20px;padding:24px 14px;transition:transform .2s,box-shadow .2s,border-color .2s}.stat:hover{border-color:var(--accent-light);transform:translateY(-4px);box-shadow:0 14px 32px #0f766e40}.stat-icon{margin-bottom:8px;font-size:26px;display:block}.stat-num{color:var(--accent);font-size:30px;font-weight:700;line-height:1}.stat-num span{margin-left:2px;font-size:18px}.stat-lbl{color:var(--text-secondary);margin-top:8px;font-size:12.5px;font-weight:500}.preview-card{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:20px;max-width:720px;margin:0 auto;text-decoration:none;transition:transform .15s,box-shadow .15s;display:block;overflow:hidden}.preview-card:hover{transform:translateY(-3px);box-shadow:0 16px 36px #0f766e40}.preview-thumb{aspect-ratio:16/9;background:var(--bg-tertiary);position:relative;overflow:hidden}.preview-img{object-fit:cover;width:100%;height:100%;transition:transform .35s;display:block}.preview-card:hover .preview-img{transform:scale(1.03)}.preview-overlay{background:linear-gradient(#0000001a 0%,#0000008c 100%);justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.play-btn{color:var(--accent);background:#fffffff0;border-radius:50%;justify-content:center;align-items:center;width:64px;height:64px;padding-left:4px;font-size:22px;display:flex;box-shadow:0 8px 22px #00000052}.preview-title{text-align:center;color:#fff;text-shadow:0 2px 8px #0009;font-size:15px;font-weight:600;position:absolute;bottom:18px;left:0;right:0}.preview-cta{text-align:center;color:var(--accent);border-top:1px solid var(--border-color);padding:18px;font-size:15px;font-weight:600}.devices-mock{max-width:820px;margin:24px auto 0}.devices-img{border-radius:14px;width:100%;height:auto;display:block}.library-showcase{border-radius:16px;max-width:920px;margin:0 auto 40px;overflow:hidden;box-shadow:0 16px 40px #0f766e40}.library-img{width:100%;height:auto;display:block}.lib-stats{background:var(--bg-secondary);border-radius:16px;align-items:center;gap:16px;margin-bottom:30px;padding:18px 32px;display:inline-flex}.lib-num{color:var(--accent);font-size:36px;font-weight:700;line-height:1}.lib-num span{margin-left:2px;font-size:22px}.lib-lbl{text-align:left;color:var(--text-primary);font-size:14px;font-weight:600}.lib-lbl em{color:var(--text-secondary);margin-top:2px;font-size:11px;font-style:normal;font-weight:400;display:block}.topic-cloud{flex-wrap:wrap;justify-content:center;gap:10px;max-width:760px;margin:0 auto;display:flex}.topic-chip{color:var(--text-primary);background:var(--bg-primary);border:1px solid var(--border-color);border-radius:20px;padding:9px 18px;font-size:13.5px;font-weight:500;transition:all .15s}.topic-chip:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-1px)}.step-list{flex-direction:column;gap:14px;max-width:720px;margin:0 auto;display:flex}.step-item{text-align:left;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:18px;align-items:center;gap:20px;padding:24px 28px;transition:transform .2s,box-shadow .2s,border-color .2s;display:flex}.step-item:hover{border-color:var(--accent-light);transform:translate(6px);box-shadow:0 10px 24px #0f766e40}.step-icon{background:var(--accent-light);border-radius:16px;flex-shrink:0;justify-content:center;align-items:center;width:56px;height:56px;font-size:28px;display:flex}.step-no{color:var(--accent);min-width:56px;font-family:Poppins,monospace;font-size:36px;font-weight:700;line-height:1}.step-title{color:var(--text-primary);margin-bottom:6px;font-size:17px;font-weight:700}.step-desc{color:var(--text-secondary);font-size:13.5px;line-height:1.7}.faq-list{flex-direction:column;gap:10px;max-width:720px;margin:0 auto;display:flex}.faq-item{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:14px;transition:border-color .15s,box-shadow .15s;overflow:hidden}.faq-item.open{border-color:var(--accent);box-shadow:0 4px 16px #0f766e40}.faq-q{text-align:left;color:var(--text-primary);cursor:pointer;background:0 0;border:none;justify-content:space-between;align-items:center;width:100%;padding:18px 22px;font-family:inherit;font-size:15px;font-weight:600;display:flex}.faq-arrow{color:var(--accent);background:var(--bg-tertiary);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;margin-left:16px;font-size:16px;display:flex}.faq-a{color:var(--text-secondary);text-align:left;padding:0 22px 20px;font-size:13.5px;line-height:1.8}.section-buy{max-width:none;padding-left:24px;padding-right:24px;position:relative;overflow:hidden}.section-buy:before{content:"";filter:blur(80px);opacity:.35;pointer-events:none;width:320px;height:320px;position:absolute;top:-100px;left:-50px}.section-buy:after{content:"";filter:blur(80px);opacity:.35;pointer-events:none;width:320px;height:320px;position:absolute;bottom:-100px;right:-50px}.section-buy>*{max-width:1180px;margin-left:auto;margin-right:auto}.buy-grid{text-align:left;grid-template-columns:1.4fr 1fr;align-items:start;gap:40px;max-width:900px;margin:0 auto;display:grid}.buy-steps{flex-direction:column;gap:18px;display:flex}.buy-step{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:14px;gap:18px;padding:20px 22px;display:flex}.bs-no{color:#fff;background:var(--gradient-primary);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:15px;font-weight:700;display:flex;box-shadow:0 4px 12px #0f766e40}.bs-title{color:var(--text-primary);margin-bottom:4px;font-size:15px;font-weight:700}.bs-desc{color:var(--text-secondary);font-size:13px;line-height:1.7}.bs-desc b{color:var(--accent);font-weight:600}.buy-cta{flex-wrap:wrap;gap:12px;margin-top:8px;display:flex}.buy-btn-primary{color:#fff;text-align:center;background:var(--gradient-primary);border-radius:28px;flex:1;padding:14px 22px;font-size:14.5px;font-weight:600;text-decoration:none;transition:transform .15s,box-shadow .15s;box-shadow:0 6px 18px #0f766e40}.buy-btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 24px #0f766e40}.buy-btn-ghost{color:var(--accent);text-align:center;background:var(--bg-primary);border:1.5px solid var(--accent);border-radius:28px;padding:14px 22px;font-size:14.5px;font-weight:600;text-decoration:none}.buy-btn-ghost:hover{background:var(--bg-tertiary)}.qr-block{z-index:1;text-align:center;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:20px;padding:36px 22px 26px;position:relative;box-shadow:0 12px 36px #0f766e40}.qr-block:before{content:"💬";background:var(--gradient-primary);border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;font-size:18px;display:flex;position:absolute;top:-18px;left:50%;transform:translate(-50%);box-shadow:0 4px 14px #0f766e40}.qr-img{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:10px;flex-direction:column;justify-content:center;align-items:center;gap:8px;width:180px;height:180px;margin:0 auto 16px;display:flex}.qr-real{object-fit:contain;width:160px;height:160px;display:block}.qr-label{color:var(--text-secondary);font-size:11px}.qr-info{color:var(--text-primary);font-size:14px;line-height:1.7}.qr-info b{color:var(--accent);font-weight:700}.qr-tip{color:var(--text-secondary);margin-top:4px;font-size:12px}.landing-footer{background:var(--study-green-softer,#f1f6ee);text-align:center;color:var(--study-green-muted,#738177);padding:32px 24px;font-size:13px}@media (width<=1199px){.hero-art{letter-spacing:-1.5px;font-size:84px}.hero-art-sep{font-size:64px}.hero-art-2{letter-spacing:-1px;font-size:58px}.hero{padding:80px 24px 70px}.sec-title{font-size:30px}.devices-mock{max-width:720px}}@media (width<=1023px){.hdr-inner{padding:12px 20px}.hdr-cta{gap:12px}.hdr-link{font-size:15px}.hdr-btn{padding:10px 20px;font-size:15px}.hero{padding:64px 20px 56px}.hero-eyebrow{letter-spacing:2.5px}.hero-art{letter-spacing:-1.5px;font-size:68px}.hero-art-sep{margin:0 2px;font-size:52px}.hero-art-2{letter-spacing:-1px;font-size:46px}.hero-title{gap:10px}.hero-sub{margin-bottom:22px;font-size:15px}.hero-stats{grid-template-columns:repeat(4,1fr);gap:12px;max-width:640px}.stat{padding:18px 10px}.stat-icon{margin-bottom:6px;font-size:22px}.stat-num{font-size:24px}.stat-lbl{font-size:11.5px}.section{padding:64px 20px}.sec-title{font-size:28px}.sec-desc{margin-bottom:32px}.devices-mock,.step-list{max-width:640px}.step-item{gap:16px;padding:20px 22px}.step-icon{width:48px;height:48px;font-size:24px}.step-no{min-width:46px;font-size:30px}.step-title{font-size:16px}.step-desc{font-size:13px}.faq-list{max-width:640px}.buy-grid{grid-template-columns:1.2fr 1fr;gap:24px}.qr-block{padding:30px 18px 22px}.qr-real{width:140px;height:140px}}@media (width<=767px){.hero{padding:56px 16px 48px}.hero-eyebrow{letter-spacing:2px;margin-bottom:20px;font-size:11.5px}.hero-art{letter-spacing:-1px;font-size:56px}.hero-art-sep{margin:0;font-size:40px}.hero-art-2{letter-spacing:-.8px;font-size:38px}.hero-title{gap:8px}.hero-sub{margin-bottom:20px;font-size:14px}.hero-tags{gap:6px;margin-bottom:36px}.tag{padding:4px 12px;font-size:12px}.hero-stats{grid-template-columns:repeat(2,1fr);gap:12px;max-width:420px}.stat-num{font-size:26px}.section{padding:52px 16px}.sec-title{margin-bottom:10px;font-size:24px}.sec-desc{margin-bottom:26px;font-size:13px}.play-btn{width:56px;height:56px;font-size:20px}.preview-title{font-size:14px}.preview-cta{padding:14px;font-size:14px}.topic-cloud{gap:8px}.topic-chip{padding:7px 14px;font-size:12.5px}.lib-stats{gap:12px;padding:14px 22px}.lib-num{font-size:28px}.lib-lbl{font-size:13px}.step-list{gap:10px}.step-item{flex-wrap:wrap;gap:12px;padding:16px}.step-icon{width:44px;height:44px;font-size:22px}.step-no{min-width:40px;font-size:28px}.step-title{font-size:15px}.step-desc{font-size:12.5px;line-height:1.6}.faq-q{padding:14px 18px;font-size:14px}.faq-a{padding:0 18px 16px;font-size:13px}.buy-grid{grid-template-columns:1fr;gap:22px;max-width:480px}.qr-block{max-width:320px;margin:0 auto;padding:30px 18px 22px}.buy-cta{flex-direction:column}.buy-btn-primary,.buy-btn-ghost{box-sizing:border-box;width:100%}.hero-blob-1,.hero-blob-2,.hero-blob-3{filter:blur(60px);opacity:.35}}@media (width<=480px){.hdr-inner{padding:10px 16px}.hdr-brand img{height:60px}.hdr-link{font-size:14px}.hdr-btn{border-radius:22px;padding:9px 16px;font-size:14px}.hero{padding:48px 14px 40px}.hero-art{letter-spacing:-.8px;font-size:46px}.hero-art-sep{display:none}.hero-art-2{letter-spacing:-.5px;font-size:30px}.hero-title{flex-direction:column;gap:6px}.hero-sub{font-size:13.5px}.stat{padding:16px 8px}.stat-icon{font-size:20px}.stat-num{font-size:22px}.stat-lbl{font-size:11px}.sec-title{font-size:22px}.step-item{gap:10px;padding:14px}.step-icon{width:40px;height:40px;font-size:20px}.step-no{min-width:36px;font-size:24px}.qr-real{width:150px;height:150px}.preview-thumb{aspect-ratio:4/3}}.learning-container{width:100%;max-width:1200px;margin:0 auto;padding:40px 20px}.learning-header{text-align:center;margin-bottom:40px}.learning-title{margin-bottom:10px;font-size:2.5rem;font-weight:700}.learning-subtitle{color:var(--text-secondary);font-size:1.1rem}.video-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:30px;margin-bottom:50px;display:grid}.video-card{background:var(--bg-secondary);border:1px solid var(--border-color);color:inherit;border-radius:16px;flex-direction:column;text-decoration:none;transition:all .3s;display:flex;overflow:hidden;box-shadow:0 4px 12px #0000000d}.video-card:hover{transform:translateY(-4px);box-shadow:0 16px 36px #0f766e26}.video-thumbnail-wrapper{aspect-ratio:16/9;background:#eee;width:100%;position:relative;overflow:hidden}.video-thumbnail{object-fit:cover;width:100%;height:100%;transition:transform .5s}.video-card:hover .video-thumbnail{transform:scale(1.05)}.video-duration{color:#fff;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#000000b3;border-radius:6px;align-items:center;gap:4px;padding:4px 8px;font-size:.8rem;display:flex;position:absolute;bottom:10px;right:10px}.video-hover-play{background:var(--accent);opacity:0;border-radius:50%;justify-content:center;align-items:center;width:50px;height:50px;transition:all .3s;display:flex;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)scale(.8)}.video-hover-play svg{margin-left:4px}.video-card:hover .video-hover-play{opacity:1;transform:translate(-50%,-50%)scale(1)}.premium-badge{background:var(--accent);color:#fff;letter-spacing:1px;border-radius:6px;padding:4px 10px;font-size:.75rem;font-weight:700;position:absolute;top:10px;left:10px;box-shadow:0 2px 4px #0003}.video-info{padding:16px}.video-title{-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-bottom:8px;font-size:1.1rem;font-weight:600;line-height:1.4;display:-webkit-box;overflow:hidden}.video-desc{color:var(--text-secondary);-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:.9rem;display:-webkit-box;overflow:hidden}.load-more-container{justify-content:center;display:flex}.learning-categories{-webkit-overflow-scrolling:touch;scroll-behavior:smooth;gap:12px;margin-bottom:32px;padding:4px 4px 12px;display:flex;overflow-x:auto}.learning-categories::-webkit-scrollbar{height:4px}.learning-categories::-webkit-scrollbar-track{background:0 0}.learning-categories::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}.cat-tab{background:var(--bg-primary);color:var(--text-secondary);border:1px solid var(--border-color);cursor:pointer;white-space:nowrap;border-radius:100px;justify-content:center;align-items:center;padding:8px 20px;font-size:.95rem;font-weight:500;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;box-shadow:0 2px 4px #0000000d}.cat-tab:hover{background:var(--bg-secondary);color:var(--text-primary);transform:translateY(-1px);box-shadow:0 4px 6px #00000014}.cat-tab:active{transform:translateY(1px)}.cat-tab.active{background:var(--accent);color:#fff;border-color:var(--accent);box-shadow:0 6px 12px var(--study-green-shadow,#0f766e40);font-weight:600}.video-tags{flex-wrap:wrap;gap:6px;margin-top:12px;display:flex}.video-tag-badge{background:var(--bg-tertiary);color:var(--accent);letter-spacing:.5px;border:1px solid #0000;border-radius:6px;padding:4px 10px;font-size:.75rem;font-weight:600;transition:all .2s}.video-tag-badge:hover{background:var(--accent);color:#fff;border-color:var(--accent)}.vocab-book-btn{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color);border-radius:20px;align-items:center;gap:8px;padding:10px 20px;font-size:14px;font-weight:500;text-decoration:none;transition:all .2s;display:inline-flex}.vocab-book-btn:hover{background:var(--bg-secondary);border-color:var(--accent-primary);color:var(--accent-primary)}.vp-back-btn,.vp-ctrl-btn,.vp-speed-btn,.vp-vip-btn,.vp-vip-dismiss,.vp-tool-btn,.vp-hide-btn,.vp-loop-btn{cursor:pointer;background:0 0;border:none;outline:none;font-family:inherit}.vp-page{background:var(--bg-primary);min-height:calc(100vh - 90px);padding:20px 24px 40px}.vp-inner{grid-template-columns:1fr 380px;align-items:start;gap:28px;max-width:1380px;margin:0 auto;display:grid}@media (width<=1100px){.vp-inner{grid-template-columns:1fr}}.vp-left{flex-direction:column;min-width:0;display:flex}.vp-back-btn{color:var(--text-secondary);border-radius:8px;align-items:center;gap:4px;width:fit-content;padding:6px 12px 6px 8px;font-size:.85rem;font-weight:600;transition:background .15s,color .15s;display:inline-flex}.vp-back-btn:hover{background:var(--bg-secondary);color:var(--text-primary)}.vp-video-card{aspect-ratio:16/9;cursor:pointer;background:#000;border-radius:18px;width:100%;position:relative;overflow:hidden;box-shadow:0 12px 40px #00000040}.vp-video{object-fit:contain;width:100%;height:100%;display:block}.vp-center-play{pointer-events:none;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.vp-big-play-btn{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#ffffff2e;border-radius:50%;justify-content:center;align-items:center;width:56px;height:56px;padding-left:4px;transition:transform .2s;display:flex;box-shadow:0 8px 32px #0000004d;border:2px solid #ffffff59!important}.vp-video-card:hover .vp-big-play-btn{transform:scale(1.06)}.vp-controls-overlay{opacity:1;background:linear-gradient(#0000 0%,#000000d9 100%);padding:20px 20px 16px;transition:opacity .35s;position:absolute;bottom:0;left:0;right:0}.vp-video-card.controls-hidden .vp-controls-overlay{opacity:0}.vp-progress-wrap{margin-bottom:14px}.vp-progress-track{background:#ffffff40;border-radius:2px;height:4px;transition:height .15s;position:relative}.vp-progress-fill{background:var(--accent);pointer-events:none;border-radius:2px;height:100%;transition:width .1s linear;position:absolute;top:0;left:0}.vp-progress-fill:after{content:"";pointer-events:none;background:#fff;border-radius:50%;width:12px;height:12px;transition:transform .15s;position:absolute;top:50%;right:-6px;transform:translateY(-50%);box-shadow:0 2px 6px #0006}.vp-progress-input{opacity:0;cursor:pointer;-webkit-appearance:none;width:100%;height:20px;position:absolute;inset:-8px 0}.vp-progress-track:hover{height:6px}.vp-progress-track:hover .vp-progress-fill:after{transform:translateY(-50%)scale(1.3)}.vp-controls-row{justify-content:space-between;align-items:center;display:flex}.vp-ctrl-left,.vp-ctrl-right{align-items:center;gap:12px;display:flex}.vp-ctrl-btn{color:#ffffffe6;border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;padding:4px;transition:transform .15s,color .15s,background .15s;display:flex}.vp-ctrl-btn:hover{color:#fff;transform:scale(1.12)}.vp-volume-group{align-items:center;gap:6px;display:flex}.vp-volume-slider-wrap{width:0;transition:width .25s;overflow:hidden}.vp-volume-group:hover .vp-volume-slider-wrap{width:72px}.vp-volume-track{background:#ffffff4d;border-radius:2px;width:72px;height:4px;position:relative}.vp-volume-fill{background:var(--accent);pointer-events:none;border-radius:2px;height:100%;position:absolute;top:0;left:0}.vp-volume-input{opacity:0;cursor:pointer;-webkit-appearance:none;width:100%;height:20px;position:absolute;inset:-8px 0}.vp-time{color:#ffffffd9;letter-spacing:.02em;white-space:nowrap;font-family:SF Mono,Consolas,monospace;font-size:.82rem}.vp-speed-btn{text-align:center;color:#ffffffe6;border-radius:6px;min-width:44px;padding:4px 10px;font-size:.85rem;font-weight:700;background:#ffffff26!important;border:1px solid #fff3!important}.vp-speed-btn:hover{transform:none;background:#ffffff47!important}.vp-vip-overlay{-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);z-index:10;background:#000000bf;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.vp-vip-box{background:var(--bg-primary);border:1px solid var(--border-color);text-align:center;border-radius:20px;max-width:340px;padding:36px 40px;box-shadow:0 24px 64px #0006}.vp-vip-crown{margin-bottom:12px;font-size:3rem}.vp-vip-box h3{color:var(--text-primary);margin:0 0 10px;font-size:1.3rem;font-weight:800}.vp-vip-box p{color:var(--text-secondary);margin:0 0 24px;font-size:.9rem;line-height:1.6}.vp-vip-btn{color:#fff;border-radius:12px;width:100%;margin-bottom:10px;padding:13px 20px;font-size:.95rem;font-weight:700;transition:transform .15s,box-shadow .15s;display:block;box-shadow:0 6px 18px #0f766e4d;background:var(--accent)!important}.vp-vip-btn:hover{transform:translateY(-2px);box-shadow:0 10px 24px #0f766e59}.vp-vip-dismiss{color:var(--text-secondary);width:100%;padding:6px;font-size:.82rem;font-weight:500;display:block}.vp-vip-dismiss:hover{color:var(--text-primary)}.vp-current-sub{background:var(--bg-secondary);border:1px solid var(--border-color);text-align:center;border-radius:16px;flex-direction:column;justify-content:center;min-height:90px;margin-top:20px;padding:20px 24px;display:flex}.vp-cur-en{color:var(--text-primary);margin-bottom:8px;font-size:1.4rem;font-weight:600;line-height:1.5;transition:filter .3s}.vp-cur-en mark{color:var(--accent);text-underline-offset:3px;background:0 0;text-decoration:underline;text-decoration-thickness:2px}.vp-cur-zh{color:var(--text-secondary);font-size:.95rem;line-height:1.6}.vp-cur-placeholder{color:var(--text-secondary);opacity:.6;font-size:.88rem;font-style:italic}.vp-cur-en.blurred{filter:blur(6px);cursor:pointer}.vp-cur-en.blurred:hover{filter:blur()}.vp-top-bar{align-items:center;margin-bottom:20px;display:flex;position:relative}.vp-top-title{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;max-width:50%;margin:0;font-size:1.25rem;font-weight:700;position:absolute;left:50%;overflow:hidden;transform:translate(-50%)}.vp-meta-badges{flex-shrink:0;align-items:center;gap:8px;margin-left:auto;display:flex}.vp-meta-badge{color:var(--text-secondary);background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:6px;align-items:center;gap:4px;padding:4px 8px;font-size:.75rem;font-weight:500;display:flex}.vp-right{position:sticky;top:90px}.vp-sub-panel{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:18px;flex-direction:column;height:calc(100vh - 130px);display:flex;overflow:hidden;box-shadow:0 4px 24px #0000000a}@media (width<=1100px){.vp-right{position:static}.vp-sub-panel{height:520px}}.vp-sub-header{border-bottom:1px solid var(--border-color);flex-shrink:0;padding:16px 18px 12px}.vp-sub-header-top{justify-content:space-between;align-items:center;margin-bottom:10px;display:flex}.vp-sub-label{color:var(--text-primary);font-size:.88rem;font-weight:700}.vp-sub-tools{gap:6px;display:flex}.vp-tool-btn{color:var(--text-secondary);border-radius:8px;padding:4px 10px;font-size:.78rem;font-weight:600;transition:all .2s;border:1.5px solid var(--border-color)!important;background:var(--bg-primary)!important}.vp-tool-btn:hover{color:var(--accent);border-color:var(--accent)!important}.vp-tool-btn.active{color:#fff;background:var(--accent)!important;border-color:var(--accent)!important}.vp-sub-header-bottom{gap:8px;display:flex}.vp-hide-btn{color:var(--text-secondary);text-align:center;border-radius:8px;flex:1;padding:6px 10px;font-size:.78rem;font-weight:600;transition:all .2s;border:1.5px solid var(--border-color)!important;background:var(--bg-primary)!important}.vp-hide-btn:hover{color:var(--accent);border-color:var(--accent)!important}.vp-hide-btn.hiding{color:var(--accent);border-color:var(--accent)!important;background:#0f766e14!important}.vp-ctrl-select{border:1.5px solid var(--border-color);background:var(--bg-primary);color:var(--text-secondary);cursor:pointer;appearance:none;text-align:center;border-radius:8px;outline:none;flex:1;min-width:0;padding:6px 4px;font-size:.78rem;font-weight:600;transition:border-color .2s,color .2s}.vp-ctrl-select:hover{border-color:var(--accent);color:var(--accent)}.vp-ctrl-select:focus{border-color:var(--accent);color:var(--accent);box-shadow:0 0 0 2px #0f766e1a}.vp-sub-list{scroll-behavior:smooth;flex:1;padding:10px;position:relative;overflow-y:auto}.vp-sub-list::-webkit-scrollbar{width:4px}.vp-sub-list::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}.vp-sub-empty{text-align:center;color:var(--text-secondary);opacity:.6;padding:40px 20px;font-size:.9rem}.vp-sub-row{cursor:pointer;border:1.5px solid #0000;border-radius:12px;flex-direction:column;align-items:flex-start;gap:4px;margin-bottom:4px;padding:12px;transition:background .15s,border-color .15s,box-shadow .15s;display:flex;box-shadow:inset 3px 0 #0000}.vp-sub-row:hover{background:var(--bg-primary)}.vp-sub-row.active{box-shadow:inset 3px 0 0 var(--accent);background:#0f766e0f;border-color:#0f766e26}.vp-sub-row.looping{border-color:var(--accent);background:#0f766e0a}.vp-sub-ts{color:var(--text-secondary);opacity:.5;flex-direction:column;flex-shrink:0;align-items:center;gap:4px;min-width:44px;padding-top:2px;font-size:.75rem;display:flex}.vp-mic-btn{border:1px solid var(--border-color);cursor:pointer;width:24px;height:24px;color:var(--text-secondary);background:0 0;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;padding:0;transition:all .2s;display:flex}.vp-mic-btn:hover{background:var(--accent);color:#fff;border-color:var(--accent);opacity:1}.vp-mic-btn.active{color:#fff;opacity:1;background:#ef4444;border-color:#ef4444;animation:1.5s infinite pulse}.vp-sub-row.active .vp-sub-ts{color:var(--accent);opacity:1}.vp-sub-text{flex:1;min-width:0}.vp-sub-en{color:var(--text-primary);margin-bottom:4px;font-size:.97rem;font-weight:500;line-height:1.5;transition:filter .3s}.vp-sub-zh{color:var(--text-secondary);font-size:.82rem;line-height:1.5;transition:filter .3s}.vp-sub-en mark{color:var(--accent);text-underline-offset:2px;background:0 0;text-decoration:underline;text-decoration-thickness:1.5px}.vp-sub-en.blurred,.vp-sub-zh.blurred{filter:blur(4px);-webkit-user-select:none;user-select:none}.vp-sub-en.blurred:hover,.vp-sub-zh.blurred:hover{filter:blur()}.size-small .vp-sub-en,.size-small.vp-current-sub .vp-cur-en{font-size:.85rem}.size-small .vp-sub-zh,.size-small.vp-current-sub .vp-cur-zh{font-size:.75rem}.size-large .vp-sub-en,.size-large.vp-current-sub .vp-cur-en{font-size:1.15rem}.size-large .vp-sub-zh,.size-large.vp-current-sub .vp-cur-zh{font-size:.95rem}.vp-sub-row.looping{border-left:3px solid var(--accent);background:#0f766e0a}.vp-intensive-cards{flex-direction:column;gap:10px;margin-top:12px;display:flex}.vp-intensive-card{background:var(--bg-primary);border:1px solid var(--border-color);text-align:left;border-radius:8px;padding:12px;box-shadow:0 2px 8px #0000000d}.vp-ic-header{align-items:baseline;gap:8px;margin-bottom:6px;display:flex}.vp-ic-word{color:var(--accent);font-size:1.1rem;font-weight:700}.vp-ic-ipa{color:var(--text-secondary);font-family:monospace;font-size:.85rem}.vp-ic-tts{cursor:pointer;opacity:.7;background:0 0;border:none;margin-left:auto;padding:0;font-size:1rem;transition:opacity .2s}.vp-ic-tts:hover{opacity:1}.vp-ic-def{color:var(--text-primary);margin-bottom:8px;font-size:.95rem;font-weight:500}.vp-ic-example{background:var(--bg-secondary);border-radius:6px;margin-bottom:10px;padding:8px;font-size:.9rem}.vp-ic-ex-en{color:var(--text-primary);margin-bottom:4px}.vp-ic-ex-zh{color:var(--text-secondary)}.vp-ic-add-btn{background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;border-radius:12px;padding:4px 12px;font-size:.85rem;transition:all .2s}.vp-ic-add-btn:hover{background:var(--accent);color:#fff;border-color:var(--accent)}.vp-shadow-recorder{box-sizing:border-box;background:#0f766e08;border:1px dashed #0f766e33;border-radius:12px;width:100%;margin-top:12px;padding:10px 14px}.vp-sr-controls{flex-wrap:wrap;align-items:center;gap:12px;font-size:10px;display:flex}.vp-sr-btn{cursor:pointer;color:#fff;border:none;border-radius:16px;align-items:center;gap:6px;padding:6px 14px;font-size:.6rem;font-weight:600;transition:all .2s cubic-bezier(.4,0,.2,1);display:inline-flex;box-shadow:0 2px 8px #00000014}.vp-sr-btn.start{background:var(--accent)}.vp-sr-btn.start:hover{filter:brightness(1.1);transform:translateY(-2px);box-shadow:0 6px 16px #0f766e40}.vp-sr-btn.start:active{transform:translateY(0)}.vp-sr-btn.stop{background:#ef4444;animation:2s infinite pulse}.vp-sr-btn.stop:hover{filter:brightness(1.1)}@keyframes pulse{0%{box-shadow:0 0 #ef444466}70%{box-shadow:0 0 0 10px #ef444400}to{box-shadow:0 0 #ef444400}}.vp-sr-result{border-top:1px dashed var(--border-color);align-items:center;gap:14px;width:100%;margin-top:8px;padding-top:12px;display:flex}.vp-sr-audio{border-radius:20px;flex:1;height:40px}.vp-sr-audio::-webkit-media-controls-panel{background-color:var(--bg-secondary)}.vp-sr-score{border-radius:12px;justify-content:center;align-items:center;min-width:60px;padding:6px 14px;font-size:.6rem;font-weight:700;display:flex;box-shadow:0 2px 8px #0000000d}.vp-sr-score.high{color:#059669;background:#d1fae5;border:1px solid #34d399}.vp-sr-score.mid{color:#d97706;background:#fef3c7;border:1px solid #fbbf24}.vp-sr-score.low{color:#dc2626;background:#fee2e2;border:1px solid #f87171}@media (width<=768px){.vp-meta-badges{display:none}}.vp-toast-overlay{z-index:9999;animation:.3s ease-out forwards vpToastFadeIn;position:fixed;bottom:100px;left:50%;transform:translate(-50%)}.vp-toast{color:#fff;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#000000d9;border-radius:30px;align-items:center;gap:8px;padding:12px 24px;font-size:14px;display:flex;box-shadow:0 4px 12px #00000026}@keyframes vpToastFadeIn{0%{opacity:0;transform:translate(-50%,20px)}to{opacity:1;transform:translate(-50%)}}.auth-container{background:var(--bg-primary);justify-content:center;align-items:center;min-height:calc(100vh - 160px);padding:40px 20px;display:flex}.auth-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:16px;width:100%;max-width:420px;padding:40px;animation:.5s ease-out forwards fadeUp;box-shadow:0 4px 24px #0000000f}@keyframes fadeUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.auth-title{text-align:center;color:var(--text-primary);margin-bottom:8px;font-size:1.75rem;font-weight:800}.auth-subtitle{text-align:center;color:var(--text-secondary);margin-bottom:28px;font-size:.9rem}.auth-error{color:#ef4444;background:#ef444414;border:1px solid #ef444426;border-radius:10px;margin-bottom:20px;padding:12px 14px;font-size:.85rem}.auth-form{flex-direction:column;gap:18px;display:flex}.form-group{flex-direction:column;gap:6px;display:flex}.form-group label{color:var(--text-secondary);font-size:.85rem;font-weight:600}.form-group input{border:1.5px solid var(--border-color);background:var(--bg-primary);color:var(--text-primary);border-radius:10px;padding:12px 14px;font-family:inherit;font-size:.95rem;transition:all .2s}.form-group input:focus{border-color:var(--accent);background:var(--bg-primary);outline:none;box-shadow:0 0 0 3px #0f766e26}.form-group input::placeholder{color:var(--text-secondary);opacity:.5}.auth-submit-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:10px;width:100%;margin-top:6px;padding:13px;font-size:1rem;font-weight:700;transition:opacity .2s}.auth-submit-btn:hover{opacity:.9}.auth-submit-btn:disabled{opacity:.5;cursor:not-allowed}.auth-switch{text-align:center;color:var(--text-secondary);margin-top:20px;font-size:.9rem}.switch-btn{color:var(--accent);cursor:pointer;font-weight:600;font-size:inherit;background:0 0;border:none;font-family:inherit;text-decoration:none}.switch-btn:hover{text-decoration:underline}.admin-container{max-width:800px;margin:0 auto;padding:40px 20px}.admin-header{margin-bottom:30px}.admin-header h1{margin-bottom:8px;font-size:2rem;font-weight:700}.admin-header p{color:var(--text-secondary)}.admin-tabs{border-bottom:1px solid var(--border-color);gap:16px;margin-bottom:30px;padding-bottom:1px;display:flex}.tab-btn{color:var(--text-secondary);border-bottom:2px solid #0000;margin-bottom:-1px;padding:12px 24px;font-size:1rem;font-weight:500;transition:all .2s}.admin-content{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:16px;padding:30px;box-shadow:0 10px 24px #0000000f}.admin-form{flex-direction:column;gap:20px;display:flex}.form-row{grid-template-columns:1fr 1fr;align-items:center;gap:20px;display:grid}.checkbox-group{flex-direction:row;align-items:center;padding-top:24px}.checkbox-group label{cursor:pointer;align-items:center;gap:8px;display:flex}.admin-form textarea{border:1px solid var(--border-color);resize:vertical;border-radius:12px;padding:12px 16px;font-family:inherit;font-size:1rem}.admin-form textarea:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px #0f766e26}.submit-btn{margin-top:10px}.alert{border-radius:12px;margin-bottom:20px;padding:12px 16px;font-size:.95rem}.alert.success{color:var(--success-color);background:#10b9811a;border:1px solid #10b98133}.alert.error{color:var(--error-color);background:#ef44441a;border:1px solid #ef444433}.profile-container{max-width:1000px;margin:40px auto;padding:0 24px}.profile-loading{min-height:400px;color:var(--text-secondary);flex-direction:column;justify-content:center;align-items:center;display:flex}.spinner{border:4px solid var(--border-color);border-top:4px solid var(--accent);border-radius:50%;width:40px;height:40px;margin-bottom:16px;animation:1s linear infinite spin}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.profile-error-container{text-align:center;color:var(--text-secondary);padding:60px 20px}.profile-error-container h3{color:var(--text-primary);margin-bottom:12px;font-size:1.5rem}.profile-hero{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:20px;align-items:center;gap:24px;margin-bottom:32px;padding:32px;display:flex;box-shadow:0 4px 20px #00000005}.profile-avatar{background:var(--accent);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:72px;height:72px;font-size:2rem;font-weight:800;display:flex}.profile-meta{flex-direction:column;gap:8px;display:flex}.user-email{color:var(--text-primary);margin:0;font-size:1.5rem;font-weight:800}.user-membership-status{flex-wrap:wrap;align-items:center;gap:16px;display:flex}.vip-badge{border-radius:12px;padding:4px 12px;font-size:.85rem;font-weight:700}.vip-badge.active{color:var(--accent);border:1px solid var(--accent);background:#0f766e1a}.vip-badge.free{background:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border-color)}.join-date{color:var(--text-secondary);font-size:.85rem}.profile-tabs{border-bottom:2px solid var(--border-color);gap:8px;margin-bottom:24px;display:flex}.tab-btn{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-bottom:2px solid #0000;margin-bottom:-2px;padding:12px 16px;font-size:1rem;font-weight:600;transition:all .2s}.tab-btn:hover{color:var(--accent)}.tab-btn.active{color:var(--accent);border-bottom-color:var(--accent)}.profile-content{background:var(--bg-primary);min-height:300px}.summary-cards{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin-bottom:32px;display:grid}.summary-card{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:16px;align-items:center;gap:20px;padding:24px;transition:transform .2s;display:flex;box-shadow:0 4px 12px #00000005}.summary-card:hover{transform:translateY(-2px)}.card-icon{font-size:2.2rem}.card-info h3{color:var(--text-primary);margin:0 0 4px;font-size:1.6rem;font-weight:800}.card-info p{color:var(--text-secondary);margin:0;font-size:.85rem}.calendar-section{border:1px solid var(--border-color);background:var(--bg-secondary);border-radius:20px;max-width:600px;margin:0 auto;padding:24px;box-shadow:0 4px 16px #00000005}.calendar-header{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.calendar-header h2{color:var(--text-primary);margin:0;font-size:1.25rem;font-weight:700}.cal-nav-btn{background:var(--bg-primary);border:1px solid var(--border-color);cursor:pointer;width:36px;height:36px;color:var(--text-primary);border-radius:50%;justify-content:center;align-items:center;font-weight:700;transition:all .2s;display:flex}.cal-nav-btn:hover{background:var(--accent);color:#fff;border-color:var(--accent)}.calendar-weekdays{text-align:center;color:var(--text-secondary);grid-template-columns:repeat(7,1fr);margin-bottom:12px;font-size:.85rem;font-weight:700;display:grid}.calendar-grid{grid-template-columns:repeat(7,1fr);gap:8px;display:grid}.calendar-day{aspect-ratio:1;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:12px;flex-direction:column;justify-content:center;align-items:center;transition:all .2s;display:flex;position:relative}.calendar-day.empty{background:0 0;border:none}.day-number{color:var(--text-primary);font-size:.95rem;font-weight:600}.calendar-day.today{border:2px solid var(--accent)}.calendar-day.punched{background:var(--accent)}.calendar-day.punched .day-number{color:#fff}.punch-indicator{color:#fff;font-size:.75rem;font-weight:700;position:absolute;bottom:2px}.calendar-legend{justify-content:center;gap:20px;margin-top:20px;font-size:.85rem;display:flex}.legend-item{color:var(--text-secondary);align-items:center;gap:6px;display:flex}.legend-dot{border-radius:3px;width:12px;height:12px;display:inline-block}.legend-dot.punched{background:var(--accent)}.legend-dot.today{border:2px solid var(--accent);background:var(--bg-primary)}.table-wrapper{border:1px solid var(--border-color);background:var(--bg-primary);border-radius:16px;overflow-x:auto}.orders-table{border-collapse:collapse;text-align:left;width:100%}.orders-table th{background:var(--bg-secondary);color:var(--text-secondary);border-bottom:2px solid var(--border-color);padding:16px;font-size:.85rem;font-weight:700}.orders-table td{border-bottom:1px solid var(--border-color);color:var(--text-primary);padding:16px;font-size:.95rem}.orders-table tr:last-child td{border-bottom:none}.order-no{color:var(--accent);font-family:monospace;font-weight:700}.order-amount{font-weight:700}.order-date{color:var(--text-secondary);font-size:.85rem}.status-badge{border-radius:20px;padding:4px 10px;font-size:.8rem;font-weight:600}.status-badge.success{color:#10b981;background:#10b9811a}.status-badge.pending{color:#f59e0b;background:#f59e0b1a}.status-badge.failed{color:#ef4444;background:#ef44441a}.empty-state{color:var(--text-secondary);flex-direction:column;justify-content:center;align-items:center;gap:16px;padding:60px 20px;display:flex}.empty-icon{margin-bottom:12px;font-size:3rem}.activate-methods-grid{grid-template-columns:repeat(auto-fit,minmax(360px,1fr));gap:28px;margin-top:8px;display:grid}.activate-method-card{border:1px solid var(--border-color);background:var(--bg-secondary);border-radius:20px;flex-direction:column;padding:32px;display:flex;box-shadow:0 4px 20px #00000005}.activate-method-card h3{color:var(--text-primary);margin:0 0 12px;font-size:1.25rem;font-weight:700}.activate-desc{color:var(--text-secondary);margin:0 0 24px;font-size:.85rem;line-height:1.6}.vip-already-active{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;padding:40px 0;display:flex}.vip-icon-large{margin-bottom:12px;font-size:3rem}.vip-already-active p{color:var(--accent);margin:0;font-size:1rem;font-weight:700}.vip-price-tag{background:var(--bg-primary);border:1.5px dashed var(--accent);text-align:center;border-radius:12px;margin-bottom:24px;padding:16px}.price-amount{color:var(--accent);font-size:2rem;font-weight:900}.price-period{color:var(--text-secondary);margin-left:4px;font-size:.95rem}.payment-methods-radio{flex-direction:column;gap:12px;margin-bottom:24px;display:flex}.pay-radio-label{border:1.5px solid var(--border-color);background:var(--bg-primary);cursor:pointer;border-radius:10px;align-items:center;gap:12px;padding:14px 16px;transition:all .2s;display:flex}.pay-radio-label:hover{border-color:var(--accent)}.pay-radio-label.selected{border-color:var(--accent);background:#0f766e0a}.pay-radio-label input[type=radio]{accent-color:var(--accent);width:18px;height:18px;margin:0}.pay-radio-label span{color:var(--text-primary);font-size:.95rem;font-weight:600}.purchase-btn,.pay-link-btn,.sandbox-btn{cursor:pointer;border:none;border-radius:10px;width:100%;padding:12px;font-size:.95rem;font-weight:700;transition:all .2s}.purchase-btn{background:var(--accent);color:#fff}.purchase-btn:hover{background:#0d615a}.pay-link-btn{background:var(--accent);color:#fff;margin-bottom:16px}.pay-link-btn:hover{background:#0d615a}.status-note{color:var(--text-primary);margin-bottom:12px;font-size:.9rem;font-weight:600}.mock-sandbox-container{background:#e2f0fe;border:1px solid #cce5ff;border-radius:12px;margin-bottom:16px;padding:16px}.sandbox-title{color:#004085;margin:0 0 10px;font-size:.85rem;font-weight:700}.sandbox-btn{color:#fff;background:#28a745}.sandbox-btn:hover{background:#218838}.activate-form{flex-direction:column;gap:16px;margin-top:auto;display:flex}.activate-form input{border:1.5px solid var(--border-color);background:var(--bg-primary);width:100%;color:var(--text-primary);border-radius:10px;padding:12px 16px;font-size:.95rem;transition:all .2s}.activate-form input:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px #0f766e26}.activate-btn{width:100%;padding:12px;font-size:.95rem;font-weight:700}.alert{border:1px solid #0000;border-radius:10px;margin-bottom:20px;padding:12px 16px;font-size:.85rem}.alert.success{color:#10b981;background:#10b98114;border-color:#10b98126}.alert.error{color:#ef4444;background:#ef444414;border-color:#ef444426}@media (width<=768px){.profile-hero{text-align:center;flex-direction:column;padding:24px}.user-membership-status{justify-content:center}.summary-cards{grid-template-columns:1fr}.orders-table th,.orders-table td{padding:12px 8px;font-size:.85rem}}.vocab-tab-content{margin-top:10px}.vocab-card{background:var(--bg-primary);border:1px solid var(--border-color);cursor:pointer;border-radius:12px;transition:all .3s;overflow:hidden;box-shadow:0 2px 8px #00000008}.vocab-card.active{border-color:var(--accent)}.vocab-card-front{flex-direction:column;align-items:flex-start;gap:8px;padding:16px;display:flex}.vocab-card-front h3{color:var(--accent);margin:0;font-size:1.3rem}.vocab-ipa{color:var(--text-secondary);font-family:monospace;font-size:.9rem}.vocab-review-count{color:var(--text-secondary);background:var(--bg-secondary);border-radius:10px;margin-top:auto;padding:2px 8px;font-size:.8rem}.vocab-card-back{border-top:1px solid var(--border-color);background:var(--bg-secondary);padding:16px;animation:.3s slideDown}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.vocab-def{color:var(--text-primary);margin-bottom:12px;font-size:1rem;line-height:1.5}.vocab-ex{color:var(--text-primary);background:var(--bg-primary);border-left:3px solid var(--accent);border-radius:8px;margin-bottom:12px;padding:12px;font-size:.95rem;line-height:1.5}.vocab-ex p{margin:0}.vocab-ex-zh{font-size:.85rem;color:var(--text-secondary)!important;margin-top:6px!important}.vocab-tts-btn{border-radius:20px;width:auto;padding:6px 16px;font-size:.9rem}.vocab-page{background:var(--bg-primary);min-height:calc(100vh - 90px);padding:20px 24px 40px}.vocab-header-container{flex-direction:column;gap:20px;max-width:1200px;margin:0 auto 30px;display:flex}.vocab-back-btn{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;align-items:center;gap:4px;padding:0;font-size:15px;font-weight:500;transition:color .2s;display:inline-flex}.vocab-back-btn:hover{color:var(--text-primary)}.vocab-header-main{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:20px;display:flex}.vocab-title-section{flex-direction:column;gap:8px;display:flex}.vocab-title{color:var(--text-primary);align-items:center;gap:12px;margin:0;font-size:28px;font-weight:600;display:flex}.vocab-title-icon{color:var(--accent-primary)}.vocab-subtitle{color:var(--text-secondary);margin:0;font-size:14px}.vocab-controls{align-items:center;gap:16px;display:flex}.vocab-search{align-items:center;display:flex;position:relative}.vocab-search-icon{color:var(--text-tertiary);position:absolute;left:12px}.vocab-search input{background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-primary);border-radius:20px;outline:none;width:250px;padding:10px 16px 10px 36px;font-size:14px;transition:all .2s}.vocab-search input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 2px #8a2be21a}.vocab-review-toggle{background:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border-color);cursor:pointer;border-radius:20px;align-items:center;gap:8px;padding:10px 18px;font-size:14px;font-weight:500;transition:all .2s;display:inline-flex}.vocab-review-toggle:hover{background:var(--bg-secondary)}.vocab-review-toggle.active{color:var(--accent-primary);border-color:var(--accent-primary);background:#8a2be21a}.vocab-content{max-width:1200px;margin:0 auto}.vocab-loading,.vocab-empty{text-align:center;color:var(--text-tertiary);background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:16px;padding:60px 20px;font-size:15px}.vocab-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;display:grid}.vocab-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:16px;flex-direction:column;gap:16px;padding:24px;transition:all .2s;display:flex;position:relative;overflow:hidden}.vocab-card:hover{border-color:var(--accent-primary);transform:translateY(-2px);box-shadow:0 8px 24px #0003}.vocab-card-header{justify-content:space-between;align-items:flex-start;display:flex}.vocab-card-word-group{flex-direction:column;gap:4px;display:flex}.vocab-card-word{color:var(--text-primary);margin:0;font-size:20px;font-weight:600}.vocab-card-ipa{color:var(--text-tertiary);font-family:monospace;font-size:13px}.vocab-card-tts{background:var(--bg-tertiary);width:32px;height:32px;color:var(--text-secondary);cursor:pointer;border:none;border-radius:50%;justify-content:center;align-items:center;transition:all .2s;display:flex}.vocab-card-tts:hover{background:var(--accent-primary);color:#fff}.vocab-card-body{flex-direction:column;gap:12px;transition:all .3s;display:flex}.vocab-card-def{color:var(--text-secondary);font-size:14px;line-height:1.5}.vocab-card-example{background:var(--bg-tertiary);border-radius:10px;flex-direction:column;gap:6px;padding:12px;font-size:13px;line-height:1.4;display:flex}.vocab-card-ex-en{color:var(--text-primary);font-style:italic}.vocab-card-ex-zh{color:var(--text-tertiary)}.vocab-card-body.review-mode{filter:blur(8px);opacity:.5;-webkit-user-select:none;user-select:none;pointer-events:none}.vocab-card:hover .vocab-card-body.review-mode,.vocab-card:active .vocab-card-body.review-mode{filter:blur();opacity:1;-webkit-user-select:auto;user-select:auto;pointer-events:auto}.vocab-card-reveal-hint{color:var(--text-primary);pointer-events:none;opacity:1;text-shadow:0 2px 4px #00000080;font-size:14px;font-weight:500;transition:opacity .3s;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.vocab-card:hover .vocab-card-reveal-hint{opacity:0}@layer components;@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial;--tw-border-style:solid;--tw-shadow:0 0 #0000;--tw-shadow-color:initial;--tw-shadow-alpha:100%;--tw-inset-shadow:0 0 #0000;--tw-inset-shadow-color:initial;--tw-inset-shadow-alpha:100%;--tw-ring-color:initial;--tw-ring-shadow:0 0 #0000;--tw-inset-ring-color:initial;--tw-inset-ring-shadow:0 0 #0000;--tw-ring-inset:initial;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial}}}@layer theme{:root,:host{--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring:where(:not(iframe)){outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer utilities{.collapse{visibility:collapse}.absolute{position:absolute}.relative{position:relative}.container{width:100%}@media (width>=40rem){.container{max-width:40rem}}@media (width>=48rem){.container{max-width:48rem}}@media (width>=64rem){.container{max-width:64rem}}@media (width>=80rem){.container{max-width:80rem}}@media (width>=96rem){.container{max-width:96rem}}.block{display:block}.flex{display:flex}.hidden{display:none}.inline-block{display:inline-block}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.border{border-style:var(--tw-border-style);border-width:1px}.shadow{--tw-shadow:0 1px 3px 0 var(--tw-shadow-color,#0000001a), 0 1px 2px -1px var(--tw-shadow-color,#0000001a);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}}:root{--study-green:#3f8a5b;--study-green-hover:#37784f;--study-green-soft:#e8f3ea;--study-green-softer:#f2f7f3;--study-green-muted:#7a8d81;--study-green-shadow:#3f8a5b3d;--study-divider:#e3eae4;--card-border:#5885671f;--text-heading:#2f3d35;--bg-primary:#fff;--bg-header:#ffffffd9;--bg-secondary:#f8fafc;--bg-tertiary:#f1f5f9;--text-primary:#334155;--text-secondary:#64748b;--border-color:#e2e8f0;--accent:#0f766e;--accent-light:#5eead4;--gradient-primary:#0f766e;--error-color:#ef4444;--success-color:#10b981}:root.dark{--bg-primary:#0f172a;--bg-header:#0f172ad9;--bg-secondary:#1e293b;--bg-tertiary:#334155;--text-primary:#f8fafc;--text-secondary:#94a3b8;--border-color:#334155;--accent:#2dd4bf;--accent-light:#115e59;--gradient-primary:#2dd4bf;--error-color:#f87171;--success-color:#34d399}.modal-box{background:var(--bg-primary);border-radius:20px;width:100%;max-width:520px;max-height:80vh;padding:24px;overflow-y:auto;box-shadow:0 24px 60px #0000002e}.invite-section{background:var(--bg-secondary);border-radius:12px;margin-bottom:16px;padding:14px 16px}.inv-row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.inv-label{color:var(--text-primary);flex:1;min-width:70px;font-size:13px;font-weight:600}.inv-btn{color:var(--accent);cursor:pointer;background:#0f766e40;border:1.5px solid #0f766e40;border-radius:8px;padding:7px 14px;font-size:12.5px;font-weight:600;transition:all .18s}.inv-btn:hover{background:#0f766e40}.inv-btn.admin{color:#be185d;background:#0f766e40;border-color:#0f766e40}.inv-btn:disabled{opacity:.5;cursor:not-allowed}.inv-ok{color:var(--text-secondary);align-items:center;gap:8px;margin-top:10px;font-size:12.5px;display:flex}.inv-code{color:var(--accent);letter-spacing:2px;background:var(--bg-tertiary);border-radius:6px;padding:3px 10px;font-family:monospace;font-size:15px;font-weight:800}.copy-btn{color:var(--accent);cursor:pointer;background:var(--bg-tertiary);border:none;border-radius:6px;padding:4px 10px;font-size:12px;font-weight:600}.codes-list{border:1px solid var(--border-color);border-radius:10px;overflow:hidden}.code-head-row{color:var(--accent-light);background:var(--bg-secondary);grid-template-columns:2fr 1fr 1fr 1.5fr;gap:8px;padding:8px 14px;font-size:11.5px;font-weight:700;display:grid}.code-row{border-top:1px solid var(--border-color);grid-template-columns:2fr 1fr 1fr 1.5fr;align-items:center;gap:8px;padding:10px 14px;font-size:12.5px;display:grid}.code-row:hover{background:var(--bg-tertiary)}.code-val{color:var(--accent);letter-spacing:1px;cursor:pointer;font-family:monospace;font-weight:700}.code-type{color:var(--accent);text-align:center;background:var(--bg-tertiary);border-radius:10px;padding:2px 8px;font-size:11px;font-weight:600}.code-type.admin{color:#be185d;background:#fdf2f8}.code-status{color:var(--text-secondary);font-size:11px}.code-status.used{color:#059669}.code-user{color:var(--text-secondary);text-overflow:ellipsis;white-space:nowrap;font-size:11.5px;overflow:hidden}.codes-empty{text-align:center;color:var(--accent-light);padding:24px;font-size:13px}.codes-loading{text-align:center;color:var(--accent-light);padding:16px;font-size:13px}.modal-overlay{z-index:9000;background:#0006;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal-box{background:var(--bg-primary);border-radius:20px;width:100%;max-width:420px;padding:24px;box-shadow:0 24px 60px #0000002e}.modal-head{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.modal-title{color:var(--text-primary);font-size:17px;font-weight:800}.modal-close{color:var(--accent-light);cursor:pointer;background:0 0;border:none;padding:0;font-size:22px;line-height:1}.modal-close:hover{color:var(--accent)}.user-info-row{background:var(--bg-secondary);border-radius:14px;align-items:center;gap:14px;margin-bottom:20px;padding:14px 16px;display:flex}.user-avatar-big{color:#fff;background:var(--gradient-primary);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:50px;height:50px;font-size:16px;font-weight:700;display:flex}.user-display-name{color:var(--text-primary);margin-bottom:2px;font-size:15px;font-weight:700}.user-phone{color:var(--text-secondary);font-size:12px}.acc-tabs{background:var(--bg-tertiary);border-radius:10px;gap:3px;margin-bottom:20px;padding:3px;display:flex}.acc-tab{text-align:center;color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:7px;flex:1;padding:8px;font-size:13.5px;font-weight:600;transition:all .2s}.acc-tab.on{color:var(--accent);background:var(--bg-primary);box-shadow:0 2px 8px #0f766e40}.acc-label{color:var(--text-secondary);margin-bottom:5px;font-size:12.5px;font-weight:500;display:block}.acc-static{color:var(--text-secondary);background:var(--bg-secondary);border:1.5px solid var(--border-color);border-radius:10px;margin-bottom:14px;padding:11px 14px;font-size:14px}.acc-input{color:var(--text-primary);box-sizing:border-box;background:var(--bg-primary);border:1.5px solid var(--border-color);border-radius:10px;outline:none;width:100%;margin-bottom:14px;padding:11px 14px;font-size:14px;transition:border-color .2s}.acc-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #0f766e40}.acc-btn{color:#fff;cursor:pointer;background:var(--gradient-primary);border:none;border-radius:10px;width:100%;margin-top:2px;padding:12px;font-size:14px;font-weight:700;transition:opacity .2s}.acc-btn:hover{opacity:.92}.acc-btn:disabled{opacity:.6;cursor:not-allowed}.acc-ok{color:#059669;text-align:center;background:#f0fdf4;border-radius:8px;margin-top:10px;padding:7px 12px;font-size:12.5px}.acc-err{color:#e11d48;text-align:center;background:#fff1f5;border:1px solid #fecdd3;border-radius:8px;margin-top:10px;padding:7px 12px;font-size:12.5px}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;margin:0;padding:0}html{scroll-behavior:smooth}body{-webkit-font-smoothing:antialiased;color:var(--text-primary);background:var(--bg-primary);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Noto Sans SC,sans-serif}button{cursor:pointer;touch-action:manipulation;font-family:inherit}a{color:inherit;touch-action:manipulation;text-decoration:none}input,textarea,select{font-family:inherit}::-webkit-scrollbar{width:4px;height:4px}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}@media (width<=640px){::-webkit-scrollbar{width:0;height:0}}.btn-primary{color:#fff;background:var(--gradient-primary);cursor:pointer;text-align:center;border:none;border-radius:10px;justify-content:center;align-items:center;padding:10px 24px;font-size:14.5px;font-weight:600;text-decoration:none;transition:all .2s;display:inline-flex;box-shadow:0 4px 12px #0f766e33}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 16px #0f766e4d}.btn-primary:disabled{opacity:.6;cursor:not-allowed;box-shadow:none;transform:none}@media (width<=767px){.btn-primary{padding:8px 20px;font-size:14px}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}