:root{--bg:#eef4ff;--panel:rgba(255,255,255,0.82);--panel-strong:rgba(255,255,255,0.96);--text:#1a2340;--muted:#5a6c8f;--accent:#5680E9;--accent-2:#84CEEB;--accent-5:#8860D0;--line:rgba(86,128,233,0.15);--shadow:0 20px 60px rgba(86,128,233,0.14);--radius:24px}*,:after,:before{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;color:var(--text);background:radial-gradient(circle at 8% 12%,rgba(193,200,228,.9),transparent 28%),radial-gradient(circle at 88% 6%,rgba(132,206,235,.75),transparent 26%),linear-gradient(135deg,#f7f9ff,#edf6fe 48%,#eef1ff);font-family:Trebuchet MS,Segoe UI,system-ui,sans-serif}a{color:inherit;text-decoration:none}.shell{width:min(1200px,calc(100% - 32px));margin:0 auto;padding:32px 0 64px}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:var(--shadow)}.sidebar-layout{display:grid;grid-template-columns:220px 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svg{width:18px;height:18px;flex-shrink:0}.nav-spacer{flex:1 1}.sidebar-bottom{margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}.sidebar-lang{display:flex;align-items:center;padding:0 4px 12px}.lang-switcher{background:none;border:1px solid var(--line);border-radius:8px;padding:4px 10px;font:600 11px/1 system-ui;letter-spacing:.07em;color:var(--muted);cursor:pointer;transition:border-color .15s,color .15s}.lang-switcher:hover{border-color:var(--accent);color:var(--accent)}.auth-page-top{position:fixed;top:16px;left:0;right:0;display:flex;align-items:center;justify-content:space-between;padding:0 24px;z-index:10}.auth-home-link{font-size:13px;color:var(--muted);transition:color .15s}.auth-home-link:hover{color:var(--accent)}.page-header{margin-bottom:24px}.page-header h1{margin:0 0 4px;font:700 clamp(1.6rem,3vw,2.2rem)/1.2 system-ui;letter-spacing:-.03em}.page-header 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system-ui;margin-bottom:6px;color:var(--text)}.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px 14px;border-radius:12px;border:1.5px solid var(--line);background:rgba(255,255,255,.9);font:400 14px/1 system-ui;color:var(--text);outline:none;transition:border-color .15s}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--accent)}.form-hint{color:var(--muted)}.form-error,.form-hint{font-size:12px;margin-top:5px}.form-error{color:#e74c3c}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.auth-card{width:min(440px,100%);background:var(--panel-strong);border:1px solid var(--line);border-radius:32px;padding:40px;box-shadow:var(--shadow)}.auth-logo{display:flex;align-items:center;gap:10px;margin-bottom:28px;justify-content:center}.auth-logo span{font:700 22px/1 system-ui}.auth-logo span b{color:var(--accent)}.auth-title{font:700 24px/1.2 system-ui;margin:0 0 6px;text-align:center}.auth-subtitle{font-size:14px;margin:0 0 28px}.auth-footer,.auth-subtitle{color:var(--muted);text-align:center}.auth-footer{margin-top:20px;font-size:13px}.auth-footer a{color:var(--accent);font-weight:600}.alert-error{padding:12px 16px;border-radius:12px;background:#fff0f0;color:#c0392b;font-size:13px;margin-bottom:16px}.code-block{background:#1a2340;border-radius:16px;padding:20px 22px;font:500 13px/1.6 Courier New,monospace;color:#a8c4ff;position:relative;overflow-x:auto;white-space:pre}.copy-btn{position:absolute;top:12px;right:12px;padding:6px 14px;border-radius:999px;border:none;background:rgba(255,255,255,.1);color:#fff;font:600 12px/1 system-ui;cursor:pointer;transition:background .15s}.copy-btn:hover{background:rgba(255,255,255,.2)}.color-row{display:flex;align-items:center;gap:12px}.color-preview{width:36px;height:36px;border-radius:8px;border:2px solid var(--line);flex-shrink:0}.alert-success{padding:14px 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20px;display:flex;flex-direction:column;position:relative;overflow:hidden;transition:box-shadow .2s,transform .2s;box-shadow:0 4px 20px rgba(86,128,233,.07)}.plan-card:hover{box-shadow:0 8px 32px rgba(86,128,233,.16);transform:translateY(-2px)}.plan-card--popular{border-color:var(--accent);box-shadow:0 6px 28px rgba(86,128,233,.22);background:linear-gradient(160deg,rgba(255,255,255,.98),rgba(238,244,255,.98))}.plan-card--current{border-color:#27ae60;box-shadow:0 4px 20px rgba(39,174,96,.15)}.plan-popular-badge{position:absolute;top:16px;right:-1px;background:linear-gradient(135deg,var(--accent),var(--accent-5));color:#fff;font:700 11px/1 system-ui;padding:5px 12px 5px 10px;border-radius:999px 0 0 999px;letter-spacing:.04em;box-shadow:0 2px 8px rgba(86,128,233,.3)}.plan-header{margin-bottom:18px}.plan-name{font:700 17px/1 system-ui;margin:0 0 10px;color:var(--text)}.plan-price{display:flex;align-items:baseline;gap:3px;margin-bottom:6px}.plan-price-num{font:800 30px/1 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system-ui;text-align:center;display:flex;align-items:center;justify-content:center;gap:6px;border:1.5px solid rgba(39,174,96,.25)}.plan-select-btn--outline{background:transparent;border:1.5px solid var(--accent);color:var(--accent);box-shadow:none}.plan-select-btn--outline:hover{background:rgba(86,128,233,.06);opacity:1}.billing-note{text-align:center;font-size:12px;color:var(--muted);background:rgba(86,128,233,.05);border-radius:12px;padding:12px 18px;border:1px solid var(--line)}.plan-dialog{border:none;border-radius:16px;padding:0;max-width:440px;width:92vw;box-shadow:0 20px 60px rgba(0,0,0,.18)}.plan-dialog::-webkit-backdrop{background:rgba(0,0,0,.4);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.plan-dialog::backdrop{background:rgba(0,0,0,.4);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.plan-dialog-inner{padding:28px 28px 24px}.plan-dialog-title{font-size:1.1rem;font-weight:700;margin:0 0 18px}.plan-dialog-input,.plan-dialog-select{width:100%;padding:10px 13px;border-radius:10px;border:1.5px solid var(--line);background:rgba(255,255,255,.9);font:400 13px/1.4 system-ui;color:var(--text);outline:none;transition:border-color .15s;box-sizing:border-box}.plan-dialog-input:focus,.plan-dialog-select:focus{border-color:var(--accent)}.plan-dialog-input--readonly{background:var(--bg-alt);color:var(--muted);cursor:default}textarea.plan-dialog-input{resize:vertical}.plan-dialog-success{background:rgba(39,174,96,.08);color:#27ae60;border-radius:10px;padding:14px 16px;font-size:13.5px;text-align:center}@media (max-width:768px){.sidebar-layout{grid-template-columns:1fr}.sidebar{position:static}.stats-grid{grid-template-columns:repeat(2,1fr)}}