:root{--bg: #f1f5f9;--surface: #ffffff;--surface-2: #f8fafc;--border: #e2e8f0;--border-strong: #cbd5e1;--text: #0f172a;--text-muted: #64748b;--text-soft: #94a3b8;--primary: #4f46e5;--primary-hover: #4338ca;--primary-soft: #eef2ff;--success: #16a34a;--success-soft: #dcfce7;--danger: #dc2626;--danger-soft: #fee2e2;--radius: 12px;--radius-sm: 8px;--radius-lg: 16px;--shadow-sm: 0 1px 2px rgb(15 23 42 / 6%);--shadow: 0 4px 12px rgb(15 23 42 / 8%);--shadow-lg: 0 12px 32px rgb(15 23 42 / 12%);--sidebar-w: 248px;font-family:Segoe UI,system-ui,-apple-system,Inter,sans-serif;color:var(--text);background:var(--bg)}*{box-sizing:border-box}body{margin:0}h1,h2,h3{margin:0;font-weight:650;letter-spacing:-.01em}button{font-family:inherit;cursor:pointer;border:none}a{color:inherit}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 16px;border-radius:var(--radius-sm);background:var(--primary);color:#fff;font-weight:600;font-size:.9rem;text-decoration:none;transition:background .15s,transform .05s;white-space:nowrap}.btn:hover:not(:disabled){background:var(--primary-hover)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn--secondary{background:var(--surface);color:var(--text);border:1px solid var(--border-strong)}.btn--secondary:hover:not(:disabled){background:var(--surface-2)}.btn--sm{padding:7px 12px;font-size:.85rem}.btn--block{width:100%}.btn--ghost{background:transparent;color:var(--text-muted);font-weight:500}.btn--ghost:hover:not(:disabled){background:var(--surface);color:var(--text)}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}.field label{font-size:.85rem;font-weight:600;color:var(--text-muted)}.input{width:100%;padding:10px 12px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);color:var(--text);font:inherit;transition:border-color .15s,box-shadow .15s}.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}.hint{color:var(--text-muted);font-size:.88rem;margin:0}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:radial-gradient(1200px 600px at 20% -10%,#e0e7ff 0%,transparent 55%),radial-gradient(1000px 500px at 100% 110%,#dbeafe 0%,transparent 50%),var(--bg)}.login-card{width:100%;max-width:420px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px 32px;box-shadow:var(--shadow-lg)}.login-card--center{text-align:center}.login-brand{display:flex;align-items:center;gap:12px;margin-bottom:24px}.login-logo{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#7c3aed);color:#fff;display:grid;place-items:center;font-weight:700;font-size:1.1rem;box-shadow:var(--shadow)}.login-card h1{font-size:1.35rem}.login-sub{color:var(--text-muted);margin:2px 0 0;font-size:.9rem}.login-error{margin:14px 0 0;padding:10px 12px;background:var(--danger-soft);color:var(--danger);border-radius:var(--radius-sm);font-size:.88rem}.login-success{margin:14px 0 0;padding:10px 12px;background:var(--success-soft, #ecfdf5);color:var(--success, #047857);border-radius:var(--radius-sm);font-size:.88rem}.spinner{display:inline-block;width:18px;height:18px;border:2px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.app{display:grid;grid-template-columns:var(--sidebar-w) 1fr;min-height:100vh}.sidebar{background:#0f172a;color:#e2e8f0;display:flex;flex-direction:column;padding:20px 16px;position:sticky;top:0;height:100vh}.sidebar__brand{display:flex;align-items:center;gap:10px;padding:4px 8px 20px}.sidebar__logo{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--primary),#7c3aed);display:grid;place-items:center;font-weight:700;color:#fff;font-size:.85rem}.sidebar__brand-name{font-weight:650;color:#fff;font-size:1.05rem}.sidebar__nav{display:flex;flex-direction:column;gap:4px;flex:1}.nav-item{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:var(--radius-sm);background:transparent;color:#94a3b8;font-size:.92rem;font-weight:500;text-align:left;width:100%;transition:background .15s,color .15s}.nav-item:hover{background:#ffffff0f;color:#e2e8f0}.nav-item--active{background:#4f46e540;color:#fff;font-weight:600}.nav-item__icon{width:18px;text-align:center;opacity:.85}.sidebar__user{margin-top:auto;padding-top:16px;border-top:1px solid rgb(255 255 255 / 8%);display:flex;flex-direction:column;gap:8px}.sidebar__user-row{display:flex;align-items:center;gap:10px;padding:4px 4px 8px}.avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;display:grid;place-items:center;font-size:.78rem;font-weight:700;flex-shrink:0}.sidebar__user-meta{min-width:0}.sidebar__user-name{font-size:.88rem;font-weight:600;color:#f1f5f9;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar__user-sub{font-size:.78rem;color:#94a3b8;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar__product-link{color:var(--text)}.main{min-width:0;display:flex;flex-direction:column}.topbar{padding:28px 32px 0}.topbar__title{font-size:1.65rem}.topbar__sub{margin:6px 0 0;color:var(--text-muted);font-size:.95rem}.content{padding:24px 32px 40px;max-width:960px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px 24px;margin-bottom:16px;box-shadow:var(--shadow-sm)}.card__head{display:flex;gap:14px;margin-bottom:18px}.card__step{width:28px;height:28px;border-radius:8px;background:var(--primary-soft);color:var(--primary);display:grid;place-items:center;font-size:.82rem;font-weight:700;flex-shrink:0}.card__title{font-size:1.05rem;margin-bottom:4px}.card__desc{margin:0;color:var(--text-muted);font-size:.9rem;line-height:1.45}.kv{display:grid;grid-template-columns:140px 1fr;gap:12px 20px;margin:0}.kv--wide{grid-template-columns:160px 1fr}.kv dt{color:var(--text-muted);font-weight:600;font-size:.88rem}.kv dd{margin:0;font-size:.95rem}.code-pill{display:inline-block;padding:4px 10px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);font-size:.82rem;font-family:ui-monospace,monospace}.product-list{list-style:none;margin:0;padding:0}.product-list__item{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0;border-top:1px solid var(--border)}.product-list__item:first-child{border-top:none;padding-top:0}.alert{padding:12px 14px;border-radius:var(--radius-sm);margin-bottom:16px;font-size:.9rem}.alert--error{background:var(--danger-soft);color:var(--danger)}.alert--success{background:var(--success-soft);color:var(--success)}.subscription-banner{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:16px 18px;background:var(--primary-soft);border:1px solid #c7d2fe;border-radius:var(--radius-sm);margin-bottom:14px}.subscription-banner__title{font-weight:650;font-size:1rem}.switch{display:flex;align-items:center;gap:10px;cursor:pointer;-webkit-user-select:none;user-select:none}.switch input{position:absolute;opacity:0;width:0;height:0}.switch__track{width:42px;height:24px;background:var(--border-strong);border-radius:999px;position:relative;transition:background .2s}.switch__track:after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;background:#fff;border-radius:50%;transition:transform .2s;box-shadow:var(--shadow-sm)}.switch input:checked+.switch__track{background:var(--primary)}.switch input:checked+.switch__track:after{transform:translate(18px)}.switch__label{font-size:.85rem;font-weight:600;color:var(--text-muted);white-space:nowrap}.feature-badges{display:flex;flex-wrap:wrap;gap:8px}.badge{display:inline-flex;align-items:center;padding:5px 11px;border-radius:999px;background:var(--surface-2);color:var(--text-muted);font-size:.8rem;font-weight:600;border:1px solid var(--border)}.badge--primary{background:var(--primary-soft);color:var(--primary);border-color:#c7d2fe}.badge--success{background:var(--success-soft);color:var(--success);border-color:#bbf7d0}.package-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}.package-card{border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px;background:var(--surface);display:flex;flex-direction:column;gap:10px;transition:border-color .15s,box-shadow .15s}.package-card:hover{box-shadow:var(--shadow-sm)}.package-card--current{border-color:var(--primary);background:var(--primary-soft);box-shadow:0 0 0 1px #4f46e526}.package-card__head{display:flex;justify-content:space-between;align-items:flex-start;gap:8px}.package-card__list{margin:0;padding-left:18px;font-size:.86rem;color:var(--text-muted);line-height:1.5}.usage-bar__label{font-size:.92rem;margin-bottom:6px}.usage-bar__track{height:8px;background:var(--surface-2);border-radius:999px;overflow:hidden;border:1px solid var(--border)}.usage-bar__fill{height:100%;background:linear-gradient(90deg,var(--primary),#7c3aed);border-radius:999px;transition:width .3s ease}.empty{text-align:center;padding:32px 16px;color:var(--text-muted);font-size:.92rem}.empty__icon{font-size:1.6rem;margin-bottom:8px;opacity:.5}@media(max-width:860px){.app{grid-template-columns:1fr}.sidebar{position:static;height:auto}.sidebar__nav{flex-direction:row;flex-wrap:wrap}.topbar,.content{padding-left:20px;padding-right:20px}.subscription-banner{flex-direction:column;align-items:flex-start}}