:root{color:#182132;background:#f5fbff;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;--surface: #ffffff;--surface-soft: #e8f7ff;--border: #c9e1ef;--text-muted: #5b6878;--accent: #1287c8;--accent-strong: #08659c;--accent-warm: #ffb547;--danger: #a93535;--danger-soft: #fff0ef;--success: #116b43;--success-soft: #eaf7ef;--shadow: 0 16px 36px rgba(22, 71, 108, .12)}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:linear-gradient(135deg,#1287c814,#ffb5471a),var(--background, #f5fbff)}button,select,textarea{font:inherit}button{cursor:pointer}.app-shell{width:min(1040px,calc(100% - 32px));margin:0 auto;padding:24px 0}.hero{display:grid;gap:8px;padding:12px 0 18px}.hero__eyebrow{margin:0;color:var(--accent);font-size:.78rem;font-weight:800;letter-spacing:0;text-transform:uppercase}.hero h1{max-width:720px;margin:0;font-size:clamp(1.45rem,4.2vw,2.9rem);line-height:1.12;letter-spacing:0}.hero p{max-width:720px;margin:0;color:var(--text-muted);line-height:1.55}.workspace{display:grid;gap:14px}.tabs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;padding:6px;border:1px solid var(--border);border-radius:8px;background:var(--surface-soft)}.tabs__button{min-height:38px;border:0;border-radius:6px;color:var(--text-muted);background:transparent;font-size:.92rem;font-weight:700;transition:transform .18s ease,color .18s ease,background .18s ease,box-shadow .18s ease}.tabs__button:hover{transform:translateY(-1px);color:var(--accent-strong)}.tabs__button--active{color:var(--accent-strong);background:var(--surface);box-shadow:0 8px 20px #1287c824}.tool-panel,.result-card,.metric-card{border:1px solid var(--border);border-radius:8px;background:var(--surface);box-shadow:var(--shadow)}.tool-panel{display:grid;gap:14px;padding:clamp(14px,2.4vw,22px)}.tool-panel__header{display:flex;align-items:start;justify-content:space-between;gap:18px}.tool-panel h2{margin:0 0 6px;font-size:clamp(1.12rem,3vw,1.55rem);letter-spacing:0}.tool-panel p{margin:0;color:var(--text-muted);line-height:1.55}.field{display:grid;gap:6px}.field--stacked{width:100%}.field__label{color:#26364c;font-size:.84rem;font-weight:800}.select,.textarea{width:100%;border:1px solid var(--border);border-radius:8px;color:#182132;background:#fbfdff;outline:none;transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease}.select{min-width:160px;min-height:38px;padding:0 10px}.textarea{min-height:132px;resize:vertical;padding:11px 12px;line-height:1.55}.select:focus,.textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px #1287c824}.result-card{display:grid;gap:10px;padding:14px;box-shadow:none;transition:transform .18s ease,border-color .18s ease}.result-card:hover,.metric-card:hover{transform:translateY(-2px);border-color:#1287c88c}.result-card__top{display:flex;align-items:center;justify-content:space-between;gap:12px}.button{min-height:36px;border:0;border-radius:8px;padding:0 13px;color:#fff;background:linear-gradient(135deg,var(--accent),#18a7b5);font-weight:800;font-size:.9rem;box-shadow:0 10px 22px #1287c838;transition:transform .18s ease,background .18s ease,box-shadow .18s ease}.button:hover{transform:translateY(-1px);background:linear-gradient(135deg,var(--accent-strong),#128f9c);box-shadow:0 12px 26px #1287c847}.button:active,.tabs__button:active{transform:translateY(0)}.output{display:block;min-height:64px;overflow-wrap:anywhere;border-radius:8px;padding:11px 12px;color:#25344a;background:#f0f8ff;line-height:1.55;white-space:pre-wrap}.alert{border-radius:8px;padding:10px 12px;font-size:.92rem}.alert--error{color:var(--danger);background:var(--danger-soft)}.alert--success{color:var(--success);background:var(--success-soft)}.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.metric-card{display:grid;gap:6px;min-height:108px;padding:13px;box-shadow:none;transition:transform .18s ease,border-color .18s ease}.metric-card span{color:var(--text-muted);font-size:.9rem;line-height:1.45}.metric-card strong{font-size:clamp(1.55rem,4vw,2.1rem);letter-spacing:0}.metric-card small{color:var(--text-muted);font-weight:700}.skeleton{display:grid;gap:10px;border:1px solid var(--border);border-radius:8px;padding:clamp(14px,2.4vw,22px);background:var(--surface);box-shadow:var(--shadow)}.skeleton__line{display:block;height:22px;border-radius:8px;background:linear-gradient(90deg,#edf0ed,#f8faf8 45%,#edf0ed);background-size:220% 100%;animation:skeleton-pulse 1.2s ease-in-out infinite}.skeleton__line:nth-child(2){width:78%}.skeleton__line:nth-child(3){height:132px}.skeleton__line:nth-child(4),.skeleton__line:nth-child(5){width:64%}@keyframes skeleton-pulse{0%{background-position:100% 0}to{background-position:-100% 0}}@media(max-width:820px){.app-shell{width:min(100% - 24px,720px);padding:20px 0}.tool-panel__header,.result-card__top{align-items:stretch;flex-direction:column}.metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.select{min-width:0}}@media(max-width:560px){.tabs,.metric-grid{grid-template-columns:1fr}.button{width:100%}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.01ms!important}}