:root{--bg:#050510;--panel:#0d0d22;--text:#dce4f0;--text-dim:#8898b0;--border:#2a2a58;--cyan:#00f0ff;--blue:#4d7cff;--purple:#a855f7;--green:#0f8;--red:#ff4d6d;--glow:0 0 20px rgba(0,240,255,.3),0 0 60px rgba(0,240,255,.1)}*{box-sizing:border-box}body,html{margin:0;padding:0}.page-wrap{position:relative;min-height:100vh;background:var(--bg);color:var(--text);font-family:SF Pro Display,Segoe UI,Noto Sans SC,PingFang SC,sans-serif;overflow-x:hidden;padding:24px 16px 40px}.bg-grid{background-image:linear-gradient(rgba(0,240,255,.05) 1px,transparent 0),linear-gradient(90deg,rgba(0,240,255,.05) 1px,transparent 0);background-size:60px 60px}.bg-grid,.bg-particles{inset:0}.bg-glow,.bg-grid,.bg-particles{position:fixed;z-index:0;pointer-events:none}.bg-glow{border-radius:50%;filter:blur(60px)}.bg-glow-1{width:480px;height:480px;top:-120px;right:-120px;background:radial-gradient(circle,rgba(0,240,255,.14),transparent 65%)}.bg-glow-2{width:520px;height:520px;bottom:-160px;left:-140px;background:radial-gradient(circle,rgba(168,85,247,.12),transparent 65%)}.scanline{position:fixed;left:0;right:0;height:120px;z-index:0;pointer-events:none;background:linear-gradient(180deg,transparent,rgba(0,240,255,.03),transparent);animation:scan 9s linear infinite}@keyframes scan{0%{top:-20%}to{top:110%}}.main-card{position:relative;z-index:1;max-width:860px;margin:0 auto;padding:20px 28px 28px;background:rgba(13,13,34,.92);border:1.5px solid var(--border);border-radius:20px;backdrop-filter:blur(14px);box-shadow:0 0 40px rgba(0,0,0,.55),inset 0 1px 0 rgba(0,240,255,.06);animation:card-in .7s ease-out}@keyframes card-in{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}.topbar{justify-content:space-between;margin-bottom:18px}.logo,.topbar{display:flex;align-items:center}.logo{gap:10px}.logo-icon{width:36px;height:36px;display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--cyan);background:rgba(0,240,255,.1);border:1.5px solid rgba(0,240,255,.45);border-radius:10px;box-shadow:0 0 14px rgba(0,240,255,.35);animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-4px)}}.logo-text{font-weight:700;font-size:18px;letter-spacing:1px;color:var(--text)}.lang-btn{padding:7px 16px;font-size:13px;font-weight:600;color:var(--cyan);background:rgba(0,240,255,.08);border:1.5px solid rgba(0,240,255,.4);border-radius:100px;cursor:pointer;transition:all .25s}.lang-btn:hover{background:rgba(0,240,255,.18);box-shadow:0 0 16px rgba(0,240,255,.25)}.hero{text-align:center;margin-bottom:26px}.hero-title{margin:0 0 10px;font-size:clamp(1.5rem,4vw,2.4rem);font-weight:800;line-height:1.35;letter-spacing:.5px}.gradient-text{display:block;background:linear-gradient(90deg,var(--cyan),var(--blue),var(--purple),var(--cyan));background-size:300% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:gradient-flow 6s linear infinite}@keyframes gradient-flow{0%{background-position:0 50%}to{background-position:300% 50%}}.github-link{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600;color:var(--text-dim);text-decoration:none;padding:6px 14px;border:1.5px solid var(--border);border-radius:100px;background:rgba(0,0,0,.3);transition:all .25s}.github-link:hover{color:var(--cyan);border-color:rgba(0,240,255,.5);box-shadow:0 0 14px rgba(0,240,255,.2)}.gh-icon{width:15px;height:15px}.panel{background:var(--panel);border:1.5px solid var(--border);border-radius:16px;padding:20px;margin-bottom:18px;position:relative;transition:border-color .3s,box-shadow .3s,transform .3s}.panel:hover{border-color:rgba(0,240,255,.35);box-shadow:0 4px 24px rgba(0,240,255,.08)}.input-row{display:flex;gap:12px;margin-bottom:18px}.link-input{flex:1;height:48px;padding:0 18px;font-size:15px;color:var(--text);background:rgba(0,0,0,.5);border:1.5px solid var(--border);border-radius:12px;outline:none;transition:border-color .25s,box-shadow .25s}.link-input::-moz-placeholder{color:var(--text-dim)}.link-input::placeholder{color:var(--text-dim)}.link-input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(0,240,255,.15),var(--glow)}.neon-btn{position:relative;overflow:hidden;height:48px;padding:0 30px;font-size:15px;font-weight:700;color:#04121a;background:linear-gradient(135deg,var(--blue),var(--cyan));border:none;border-radius:12px;cursor:pointer;box-shadow:0 0 18px rgba(0,240,255,.35);transition:transform .2s,box-shadow .25s,filter .2s;white-space:nowrap}.neon-btn:hover{transform:translateY(-2px);box-shadow:0 0 28px rgba(0,240,255,.55);filter:brightness(1.08)}.neon-btn:active{transform:translateY(0)}.ghost-btn{position:relative;overflow:hidden;height:40px;padding:0 26px;font-size:14px;font-weight:600;color:var(--cyan);background:transparent;border:1.5px solid rgba(0,240,255,.45);border-radius:10px;cursor:pointer;transition:all .25s;white-space:nowrap}.ghost-btn:hover{background:rgba(0,240,255,.12);box-shadow:0 0 16px rgba(0,240,255,.3)}.ripple{position:absolute;border-radius:50%;background:hsla(0,0%,100%,.35);transform:scale(0);animation:ripple-anim .7s ease-out;pointer-events:none}@keyframes ripple-anim{to{transform:scale(3);opacity:0}}.options{display:flex;flex-direction:column;gap:12px}.check-line{gap:9px;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;font-size:14px;font-weight:600;color:var(--text)}.check-box,.check-line{display:flex;align-items:center}.check-box{width:18px;height:18px;justify-content:center;font-size:12px;color:transparent;border:1.5px solid var(--border);border-radius:5px;background:rgba(0,0,0,.4);transition:all .2s}.check-box.checked{color:#04121a;background:var(--cyan);border-color:var(--cyan);box-shadow:0 0 10px rgba(0,240,255,.45)}.info-dot{color:var(--text-dim);font-size:14px;cursor:help;opacity:.9}.info-dot:hover{color:var(--cyan)}.opt-group{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.opt-label{font-weight:700;letter-spacing:1px;margin-right:4px}.opt-label,.pill{font-size:13px;color:var(--text-dim)}.pill{display:inline-flex;align-items:center;padding:6px 14px;font-weight:600;background:rgba(0,0,0,.35);border:1.5px solid var(--border);border-radius:100px;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;transition:all .2s}.pill:hover{border-color:rgba(0,240,255,.5);color:var(--text)}.pill.active{color:var(--cyan);border-color:var(--cyan);background:rgba(0,240,255,.12);box-shadow:0 0 12px rgba(0,240,255,.25)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.result-area{width:100%;padding:14px 16px;font-size:14px;line-height:1.7;font-family:SF Mono,Fira Code,Consolas,monospace;color:var(--text);background:rgba(0,0,0,.5);border:1.5px solid var(--border);border-radius:12px;outline:none;resize:vertical;transition:border-color .25s,box-shadow .25s}.result-area::-moz-placeholder{color:var(--text-dim)}.result-area::placeholder{color:var(--text-dim)}.result-area:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(0,240,255,.12),var(--glow)}.result-bar{display:flex;align-items:center;margin-top:14px}.songs-count{font-size:14px;font-weight:600;color:var(--text-dim);animation:count-in .4s ease-out}@keyframes count-in{0%{opacity:0;transform:translateX(-8px)}to{opacity:1;transform:translateX(0)}}.count-num{font-size:20px;color:var(--green);text-shadow:0 0 12px rgba(0,255,136,.5);margin-left:4px}.bar-spacer{flex:1}.guide-header{display:flex;align-items:center;justify-content:space-between;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;padding:2px 0}.guide-title{font-size:15px;font-weight:700;letter-spacing:1px;color:var(--text)}.chevron{color:var(--text-dim);font-size:14px;transition:transform .3s}.chevron.open{transform:rotate(180deg);color:var(--cyan)}.guide-body{margin-top:14px;padding-top:14px;border-top:1px solid rgba(42,42,88,.7)}.guide-list{margin:0;padding-left:20px;display:flex;flex-direction:column;gap:10px;font-size:14px;line-height:1.7;color:var(--text)}.guide-list li::marker{color:var(--cyan)}.guide-tip{margin:14px 0 0;padding:12px 16px;font-size:13px;color:var(--green);background:rgba(0,255,136,.06);border:1px solid rgba(0,255,136,.25);border-radius:10px;line-height:1.6}.guide-fade-enter-active,.guide-fade-leave-active{transition:opacity .25s ease}.guide-fade-enter-from,.guide-fade-leave-to{opacity:0}.inline-link{color:var(--cyan);text-decoration:none;font-weight:600;border-bottom:1px solid rgba(0,240,255,.35);transition:all .2s}.inline-link:hover{text-shadow:0 0 10px rgba(0,240,255,.6)}.foot{text-align:center;font-size:12.5px;color:var(--text-dim);padding-top:4px}.el-message{background:var(--panel)!important;border:1.5px solid var(--border)!important;border-radius:10px!important;box-shadow:0 8px 30px rgba(0,0,0,.5)!important;backdrop-filter:blur(10px)}.el-message .el-message__content{color:var(--text)!important;font-weight:600}.el-message--success .el-message__content{color:var(--green)!important}.el-message--error .el-message__content{color:var(--red)!important}.el-message .el-message__icon{font-size:18px}@media (max-width:768px){.main-card{padding:16px 14px 20px;border-radius:14px}.input-row{flex-direction:column}.neon-btn{width:100%}.hero-title{font-size:1.35rem}.result-bar{flex-wrap:wrap;gap:8px}.bar-spacer{display:none}.ghost-btn{width:100%}}