:root{--bg:#fafafa;--bg-card:#fff;--text:#1a1a1a;--muted:#9ca3af;--line:#e5e7eb;--accent:#a58bff;--accent-hover:#8e7cff;--accent-soft:#f2efff;--btn-secondary-bg:#f4f4f5;--assistant-msg:#f4f4f5;--user-msg:#c4b5fd;--ok:#16803d;--danger:#b42318}*{box-sizing:border-box}body,html{margin:0;padding:0;min-height:100%;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;text-rendering:optimizeLegibility}a{color:inherit;text-decoration:none}.shell{width:100%;max-width:740px;margin:0 auto;min-height:100svh;padding:16px 16px calc(116px + env(safe-area-inset-bottom))}.card{background:var(--bg-card);border:1px solid var(--line);border-radius:20px;box-shadow:none;animation:card-in .2s ease-out}.btn{border:0;border-radius:20px;min-height:44px;padding:12px 16px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:6px;color:var(--text);transition:background .16s ease,color .16s ease,transform .14s ease}.btn:hover{transform:translateY(-1px)}.btn:disabled{background:#e5e7eb;color:#9ca3af;cursor:not-allowed;transform:none}.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{background:var(--btn-secondary-bg);color:var(--text)}.btn-secondary:hover{background:#e5e7eb}.btn:disabled:hover{background:#e5e7eb;color:#9ca3af}.text-muted{color:var(--muted)}.mobile-bottom-nav{position:fixed;left:50%;transform:translateX(-50%);bottom:0;width:min(740px,100vw);background:#fff;border:0;border-radius:0;display:grid;grid-template-columns:repeat(5,1fr);overflow:hidden;z-index:20;box-shadow:none;padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom-nav .nav-action,.mobile-bottom-nav a{display:grid;justify-items:center;align-content:center;grid-gap:3px;gap:3px;text-align:center;min-height:62px;padding:8px 6px;font-size:10px;color:var(--muted);position:relative}.mobile-bottom-nav .nav-action{border:0;background:transparent;font:inherit;cursor:pointer}.mobile-bottom-nav .nav-icon{font-size:18px;line-height:1}.mobile-bottom-nav .nav-icon-svg{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;transition:transform .16s ease,filter .16s ease}.mobile-bottom-nav .nav-icon-svg svg{width:100%;height:100%;display:block}.mobile-bottom-nav .nav-action:hover .nav-icon-svg,.mobile-bottom-nav a:hover .nav-icon-svg{transform:translateY(-1px)}.mobile-bottom-nav .nav-label{line-height:1.1}.mobile-bottom-nav a[data-active=true]{background:transparent;color:var(--accent);font-weight:700}.mobile-bottom-nav a[data-active=true] .nav-icon-svg{transform:translateY(-1px);filter:drop-shadow(0 2px 4px rgba(165,139,255,.35))}.mobile-bottom-nav a:not([data-active=true]) .nav-icon-svg{filter:saturate(.85)}.chat-list{display:flex;flex-direction:column;gap:14px;padding:16px}.msg{max-width:78%;border-radius:20px;padding:12px 16px;line-height:1.45;white-space:pre-wrap;color:var(--text)}.msg-user{align-self:flex-end;background:var(--user-msg)}.msg-assistant{align-self:flex-start;background:var(--assistant-msg)}.chat-input-wrap{display:grid;grid-template-columns:1fr auto;grid-gap:10px;gap:10px;padding:12px 16px;border-top:1px solid var(--line);background:#fff}input,select,textarea{color:var(--text);background:#fff;border:1px solid var(--line);border-radius:22px;padding:12px 16px;font:inherit}input::placeholder,textarea::placeholder{color:#9ca3af}.chat-input-wrap textarea{resize:none;min-height:46px;max-height:140px}@media (min-width:860px){.shell{padding:20px 20px calc(120px + env(safe-area-inset-bottom))}}@keyframes card-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.admin-header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;flex-wrap:wrap}.admin-header h1{margin:0;font-size:22px;line-height:1.2}.admin-header .admin-subtitle{margin:4px 0 0;color:var(--muted);font-size:14px}.admin-toolbar{display:flex;gap:8px;flex-wrap:wrap}.section-title{margin:0 0 4px;font-size:16px;font-weight:600}.section-hint{margin:0 0 14px;color:var(--muted);font-size:13px}.field{display:grid;grid-gap:6px;gap:6px}.field-label{font-size:13px;font-weight:600;color:var(--text)}.field-hint{font-size:12px;color:var(--muted)}.field-row{display:grid;grid-template-columns:1fr;grid-gap:10px;gap:10px}@media (min-width:600px){.field-row.field-row-2{grid-template-columns:1fr 1fr}}.callout{display:flex;gap:12px;padding:12px 14px;border-radius:16px;background:var(--accent-soft);color:var(--text);font-size:13px;line-height:1.5;align-items:flex-start}.callout .callout-icon{width:28px;height:28px;border-radius:50%;background:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:700;color:var(--accent);flex-shrink:0}.callout-muted{background:var(--btn-secondary-bg)}.callout-muted .callout-icon{color:var(--muted)}.metric{display:flex;align-items:baseline;gap:8px}.metric-value{font-size:36px;font-weight:700;line-height:1}.metric-unit{color:var(--muted);font-size:14px}.tariff-grid{display:grid;grid-gap:10px;gap:10px;grid-template-columns:1fr}@media (min-width:600px){.tariff-grid{grid-template-columns:1fr 1fr}}.tariff-card{display:grid;grid-gap:8px;gap:8px;padding:14px;border:1px solid var(--line);border-radius:16px;background:#fff;cursor:pointer;text-align:left;transition:border-color .16s ease,transform .14s ease,box-shadow .16s ease}.tariff-card:hover{border-color:var(--accent);transform:translateY(-1px)}.tariff-card.is-selected{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.tariff-card .tariff-head{display:flex;justify-content:space-between;align-items:center;gap:8px}.tariff-card .tariff-name{font-weight:600}.tariff-card .tariff-code{color:var(--muted);font-size:12px;letter-spacing:.04em;text-transform:uppercase}.tariff-card .tariff-stats{display:grid;grid-template-columns:1fr 1fr;grid-gap:6px 14px;gap:6px 14px;font-size:13px;color:var(--muted)}.tariff-card .tariff-stats strong{color:var(--text);font-weight:600}.badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.04em}.badge-active{background:#e7f7ec;color:var(--ok)}.badge-muted{background:var(--btn-secondary-bg);color:var(--muted)}.alert{padding:10px 14px;border-radius:14px;font-size:13px;margin:0}.alert-error{background:#fdecea;color:var(--danger)}.alert-success{background:#e7f7ec;color:var(--ok)}.disclosure-summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:8px}.disclosure-summary::-webkit-details-marker{display:none}.disclosure-summary .disclosure-chevron{color:var(--muted);font-size:14px;transition:transform .16s ease}details[open] .disclosure-summary .disclosure-chevron{transform:rotate(180deg)}.input-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.input-row input{flex:1 1;min-width:160px}.login-support{display:flex;align-items:center;justify-content:center;gap:6px;flex-wrap:wrap;margin-top:16px;padding:12px 16px;text-align:center;font-size:13px}.login-support-link{color:var(--accent);font-weight:600;border-bottom:1px dashed var(--accent);transition:color .16s ease,border-color .16s ease}.login-support-link:hover{color:var(--accent-hover);border-color:var(--accent-hover)}