:root {
  --bg-base:        #080c14;
  --bg-surface:     #0d1321;
  --bg-card:        #101828;
  --bg-elevated:    #1a2540;
  --border:         #1e2d3d;
  --border-bright:  #2a3f57;
  --text-primary:   #e2e8f0;
  --text-secondary: #8892a4;
  --text-muted:     #4a5568;
  --cyan:    #00d4ff;
  --green:   #00ff9f;
  --red:     #ff4757;
  --orange:  #ffa502;
  --purple:  #a78bfa;
  --yellow:  #ffd32a;
  --cyan-dim:   rgba(0, 212, 255, 0.12);
  --green-dim:  rgba(0, 255, 159, 0.10);
  --red-dim:    rgba(255, 71, 87, 0.12);
  --orange-dim: rgba(255, 165, 2, 0.12);
  --purple-dim: rgba(167, 139, 250, 0.10);
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  --font-sans: 'Inter', system-ui, sans-serif;
  --radius:    8px;
  --radius-lg: 12px;
  --radius-sm: 4px;
  --transition: 200ms ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

.mono { font-family: var(--font-mono); }
.muted-text { color: var(--text-muted); }
.accent { color: var(--cyan); }
.good   { color: var(--green); }
.ok     { color: var(--yellow); }
.warn   { color: var(--orange); }

/* ===== BACKGROUND ===== */
.bg-grid {
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.025) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none; z-index: 0;
}
.bg-glow {
  position: fixed; top: -30vh; left: 50%; transform: translateX(-50%);
  width: 80vw; height: 60vh;
  background: radial-gradient(ellipse at center, rgba(0,212,255,0.04) 0%, transparent 70%);
  pointer-events: none; z-index: 0;
}
.scanline {
  position: fixed; inset: 0;
  background: repeating-linear-gradient(to bottom,
    transparent 0, transparent 3px,
    rgba(0,0,0,0.06) 3px, rgba(0,0,0,0.06) 4px);
  pointer-events: none; z-index: 1; opacity: 0.4;
}

/* ===== HEADER ===== */
header {
  position: sticky; top: 0; z-index: 100;
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.9rem 2rem;
  background: rgba(8,12,20,0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.header-left { display: flex; flex-direction: column; gap: 2px; }
.logo { font-size: 1.4rem; font-weight: 700; letter-spacing: 3px; line-height: 1; }
.logo-bracket { color: var(--text-muted); }
.logo-accent  { color: var(--cyan); text-shadow: 0 0 20px rgba(0,212,255,0.4); }
.tagline { font-size: 11px; color: var(--text-muted); letter-spacing: 1px; }
.back-btn {
  font-size: 11px; letter-spacing: 1px; padding: 5px 12px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text-secondary); text-decoration: none;
  transition: all var(--transition);
}
.back-btn:hover { border-color: var(--cyan); color: var(--cyan); background: var(--cyan-dim); }

/* ===== TAB NAV ===== */
.tab-nav {
  position: sticky; top: 57px; z-index: 90;
  display: flex; gap: 0;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}
.tab-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 0.75rem 1.25rem;
  background: transparent; border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  letter-spacing: 1px; white-space: nowrap;
  cursor: pointer; transition: all var(--transition);
}
.tab-btn:hover { color: var(--cyan); background: var(--cyan-dim); }
.tab-btn.active {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  background: rgba(0,212,255,0.06);
}
.tab-icon { font-size: 13px; }

/* ===== MAIN ===== */
main {
  position: relative; z-index: 5;
  min-height: calc(100vh - 160px);
}

/* ===== TAB PANELS ===== */
.tab-panel { display: none; padding: 1.5rem 2rem; }
.tab-panel.active { display: block; }

/* ===== COMMON FORM ELEMENTS ===== */
.field-label {
  display: block;
  font-size: 10px; letter-spacing: 1.5px;
  color: var(--text-muted); margin-bottom: 5px;
}
.field-group { display: flex; flex-direction: column; gap: 2px; margin-bottom: 1rem; }
.field-group.horiz { flex-direction: row; align-items: center; gap: 8px; margin-bottom: 0; flex-wrap: wrap; }
.field-group.horiz .field-label { margin-bottom: 0; white-space: nowrap; }

.field-input {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 13px; padding: 6px 10px;
  outline: none; transition: border-color var(--transition), box-shadow var(--transition);
}
.field-input:focus { border-color: var(--cyan); box-shadow: 0 0 0 2px rgba(0,212,255,0.1); }
.field-input.short { width: 130px; }
.field-input.cidr-num { width: 60px; }
select.field-input { cursor: pointer; }
select.field-input option { background: var(--bg-elevated); }

.tool-btn {
  background: transparent; border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-secondary);
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  letter-spacing: 1px; padding: 6px 14px;
  cursor: pointer; transition: all var(--transition); white-space: nowrap;
}
.tool-btn:hover:not(:disabled) { border-color: var(--cyan); color: var(--cyan); background: var(--cyan-dim); }
.tool-btn:disabled { opacity: 0.35; cursor: not-allowed; }
.tool-btn.primary { border-color: var(--green); color: var(--green); background: var(--green-dim); }
.tool-btn.primary:hover:not(:disabled) { box-shadow: 0 0 12px rgba(0,255,159,0.2); }
.tool-btn.accent  { border-color: var(--cyan); color: var(--cyan); background: var(--cyan-dim); }
.tool-btn.active  { border-color: var(--orange); color: var(--orange); background: var(--orange-dim); }

.error-msg { color: var(--red); font-size: 12px; padding: 0.5rem; }

/* ===== TAB 1: SUBNET CALCULATOR ===== */
.sc-layout {
  display: grid; grid-template-columns: 280px 1fr;
  gap: 1.5rem; max-width: 900px;
}
.sc-input-col { display: flex; flex-direction: column; }
.range-row { display: flex; align-items: center; gap: 8px; }
.cidr-range {
  flex: 1; height: 4px; cursor: pointer; accent-color: var(--cyan);
}
.or-divider {
  text-align: center; font-size: 10px; letter-spacing: 1px;
  color: var(--text-muted); margin: 0.5rem 0;
}
.sc-class-badge {
  margin-top: auto; padding-top: 1rem;
  font-family: var(--font-mono); font-size: 11px; font-weight: 700;
  letter-spacing: 2px; color: var(--cyan);
}

.sc-results {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

dl.result-grid {
  display: grid; grid-template-columns: auto 1fr;
  gap: 0;
}
dl.result-grid dt,
dl.result-grid dd {
  padding: 8px 16px; font-size: 12px;
  border-bottom: 1px solid var(--border);
}
dl.result-grid dt {
  color: var(--text-muted); background: var(--bg-elevated);
  font-size: 10px; letter-spacing: 0.5px; white-space: nowrap;
  display: flex; align-items: center;
}
dl.result-grid dd {
  color: var(--cyan); font-weight: 600;
}
dl.result-grid dt:last-of-type,
dl.result-grid dd:last-of-type { border-bottom: none; }

/* ===== TAB 2: VLSM PLANNER ===== */
.vlsm-top-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px;
  padding-bottom: 1rem; border-bottom: 1px solid var(--border); margin-bottom: 1rem;
}
.vlsm-btns { display: flex; gap: 6px; flex-wrap: wrap; }

.vlsm-dept-area {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 1.5rem;
}
.vlsm-dept-hdr {
  display: grid; grid-template-columns: 1fr 140px 70px 32px;
  gap: 8px; padding: 8px 14px;
  background: var(--bg-elevated); border-bottom: 1px solid var(--border);
  font-size: 10px; letter-spacing: 1.5px; color: var(--text-muted);
}
.vlsm-cidr-hdr { text-align: center; }

.vlsm-dept-row {
  display: grid; grid-template-columns: 1fr 140px 70px 32px;
  gap: 8px; padding: 7px 14px; align-items: center;
  border-bottom: 1px solid var(--border);
}
.vlsm-dept-row:last-child { border-bottom: none; }
.vlsm-dept-row input { background: var(--bg-elevated); }

.remove-btn {
  width: 28px; height: 28px; border-radius: var(--radius-sm);
  background: transparent; border: 1px solid var(--border);
  color: var(--text-muted); font-size: 11px; cursor: pointer;
  transition: all var(--transition); display: flex; align-items: center; justify-content: center;
}
.remove-btn:hover { border-color: var(--red); color: var(--red); background: var(--red-dim); }

.vlsm-results { max-width: 100%; }

.vlsm-util-bar { margin-bottom: 1rem; }
.util-label { font-size: 11px; letter-spacing: 1px; color: var(--text-muted); margin-bottom: 6px; }
.util-track {
  height: 6px; background: var(--border); border-radius: 3px; overflow: hidden;
}
.util-fill {
  height: 100%; background: var(--cyan);
  box-shadow: 0 0 8px rgba(0,212,255,0.4); border-radius: 3px;
  transition: width 0.5s ease;
}

.table-scroll { overflow-x: auto; }
.data-table {
  width: 100%; border-collapse: collapse;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.data-table th {
  padding: 8px 12px; text-align: left;
  font-size: 10px; letter-spacing: 1px; color: var(--text-muted);
  background: var(--bg-elevated); border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.data-table td {
  padding: 8px 12px; font-size: 12px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(0,212,255,0.03); }
.data-table td.accent { color: var(--cyan); }

/* ===== TAB 3: BINARY VISUALIZER ===== */
.bv-top-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px;
  padding-bottom: 1rem; border-bottom: 1px solid var(--border); margin-bottom: 1.5rem;
}
.bv-legend { display: flex; align-items: center; gap: 8px; }
.bit-demo {
  width: 12px; height: 12px; border-radius: 2px; display: inline-block;
}
.bit-demo.bit-net  { background: var(--cyan); }
.bit-demo.bit-host { background: var(--green); }

.bv-display {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden; overflow-x: auto;
}

.bv-table { min-width: 700px; }

.bv-hdr {
  display: flex; align-items: center;
  padding: 8px 16px; gap: 8px;
  background: var(--bg-elevated); border-bottom: 1px solid var(--border);
  font-size: 10px; letter-spacing: 1px; color: var(--text-muted);
}
.bv-hdr-label { width: 60px; flex-shrink: 0; }
.bv-hdr-bits { display: flex; gap: 0; flex: 1; }
.bit-pos-hdr {
  width: 14px; text-align: center; font-size: 8px; color: var(--text-muted);
}
.bit-sep-hdr { width: 8px; }
.bv-hdr-decimal { width: 100px; text-align: right; }

.bv-row {
  display: flex; align-items: center;
  padding: 6px 16px; gap: 8px;
  border-bottom: 1px solid var(--border);
}
.bv-row:last-child { border-bottom: none; }
.bv-row-label {
  width: 60px; flex-shrink: 0;
  font-size: 10px; letter-spacing: 1px; color: var(--text-muted);
}
.bv-bits { display: flex; align-items: center; gap: 0; flex: 1; }
.bit {
  width: 14px; height: 22px; line-height: 22px; text-align: center;
  font-size: 11px; border-radius: 2px;
  transition: background var(--transition);
}
.bit.bit-net  { color: var(--cyan); background: rgba(0,212,255,0.10); }
.bit.bit-host { color: var(--green); background: rgba(0,255,159,0.08); }
.bit.bit-plain{ color: var(--text-secondary); }
.bit-sep { width: 8px; text-align: center; color: var(--border-bright); font-size: 13px; }
.bv-row-decimal { width: 100px; text-align: right; font-size: 12px; color: var(--text-secondary); }

.bv-op-divider {
  padding: 4px 16px; font-size: 10px; color: var(--text-muted);
  background: rgba(0,0,0,0.2); letter-spacing: 0.5px;
}

.bv-summary {
  display: flex; gap: 1.5rem; flex-wrap: wrap;
  padding: 12px 16px; border-top: 1px solid var(--border);
  background: var(--bg-elevated);
}
.bv-summary-item { font-size: 12px; color: var(--text-secondary); }
.bv-summary-item span { color: var(--cyan); font-weight: 700; }

/* ===== TAB 4: PACKET FLOW ===== */
.pf-top-bar {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center;
  padding-bottom: 1rem; border-bottom: 1px solid var(--border); margin-bottom: 1rem;
}
.scenario-group { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.pf-ctrl-group  { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-left: auto; }

.scenario-btn {
  background: transparent; border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text-muted); font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.5px; padding: 5px 12px;
  cursor: pointer; transition: all var(--transition);
}
.scenario-btn:hover { border-color: var(--cyan); color: var(--cyan); background: var(--cyan-dim); }
.scenario-btn.active { border-color: var(--cyan); color: var(--cyan); background: var(--cyan-dim); }

/* Topology */
.pf-topology {
  padding: 1rem 0 0.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
  overflow-x: auto;
}
.pf-nodes {
  display: flex; align-items: flex-start; gap: 0;
  min-width: 500px; padding: 0 1.5rem 1rem;
}
.pf-node { display: flex; flex-direction: column; align-items: center; gap: 4px; flex-shrink: 0; min-width: 72px; }
.pf-node-body {
  width: 52px; height: 52px; font-size: 1.4rem;
  border: 2px solid var(--border); border-radius: var(--radius);
  background: var(--bg-card);
  display: flex; align-items: center; justify-content: center;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
  will-change: border-color, box-shadow;
}
.pf-node.active .pf-node-body {
  border-color: var(--cyan); background: rgba(0,212,255,0.08);
  box-shadow: 0 0 14px rgba(0,212,255,0.3), inset 0 0 4px rgba(0,212,255,0.2);
}
.pf-node-label { font-size: 10px; letter-spacing: 1.5px; color: var(--text-primary); text-align: center; }
.pf-node-sub   { font-size: 9px; color: var(--text-secondary); text-align: center; }
.pf-node.active .pf-node-label { color: var(--cyan); }

.pf-connector {
  flex: 1; height: 2px; background: var(--border);
  align-self: flex-start; margin-top: 25px; min-width: 20px;
  transition: background 0.4s, box-shadow 0.4s;
}
.pf-connector.active {
  background: var(--cyan);
  box-shadow: 0 0 6px rgba(0,212,255,0.5);
  animation: pulse-line 1s ease-in-out infinite;
}
@keyframes pulse-line {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Info row */
.pf-info-row {
  display: grid; grid-template-columns: 1fr 340px; gap: 1rem;
}
.pf-step-panel {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 1rem; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
}
.step-badge {
  font-size: 9px; letter-spacing: 1.5px; padding: 3px 8px;
  border: 1px solid var(--border); border-radius: 3px;
  color: var(--text-muted); white-space: nowrap; flex-shrink: 0; margin-top: 2px;
}
.step-badge.active { border-color: var(--cyan); color: var(--cyan); }
.step-title { font-size: 14px; font-weight: 600; color: var(--text-primary); }
.step-desc  { font-size: 12px; color: var(--text-secondary); margin-top: 4px; line-height: 1.7; }

.pf-packet-panel {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
}
.pf-packet-hdr {
  padding: 8px 12px; font-size: 10px; letter-spacing: 1px;
  color: var(--text-muted); background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}
.pf-packet-fields { padding: 10px 12px; display: flex; flex-direction: column; gap: 4px; }
.pf-field { display: flex; gap: 8px; align-items: baseline; }
.pf-field-key { font-size: 9px; letter-spacing: 0.5px; color: var(--text-muted); white-space: nowrap; flex-shrink: 0; min-width: 80px; }
.pf-field-val { font-size: 11px; color: var(--cyan); word-break: break-all; }

/* ===== TAB 5: CHALLENGE ===== */
.ch-top-bar {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center;
  padding-bottom: 1rem; border-bottom: 1px solid var(--border); margin-bottom: 1.5rem;
}
.ch-stats { display: flex; gap: 12px; flex-wrap: wrap; }
.ch-stat {
  background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 8px 16px; text-align: center; min-width: 70px;
}
.ch-stat-val { font-size: 1.3rem; font-weight: 700; color: var(--cyan); }
.ch-stat-key { font-size: 9px; letter-spacing: 1.5px; color: var(--text-muted); margin-top: 2px; }
.timer-val.urgent { color: var(--red) !important; animation: pulse-red 0.5s ease-in-out infinite; }
@keyframes pulse-red { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

.ch-controls { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-left: auto; }

.diff-btn {
  background: transparent; border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text-muted); font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 1px; padding: 5px 12px; cursor: pointer; transition: all var(--transition);
}
.diff-btn:hover { border-color: var(--purple); color: var(--purple); background: var(--purple-dim); }
.diff-btn.active { border-color: var(--purple); color: var(--purple); background: var(--purple-dim); }

.ch-area { max-width: 700px; margin: 0 auto; }
.ch-idle { color: var(--text-muted); font-size: 12px; letter-spacing: 1px; text-align: center; padding: 3rem; }

.ch-question-box {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
}
.ch-q-num {
  padding: 8px 16px; font-size: 10px; letter-spacing: 1.5px;
  color: var(--text-muted); background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}
.ch-q-text {
  padding: 1.25rem 1.5rem; font-size: 15px; font-weight: 500;
  line-height: 1.7; color: var(--text-primary);
  border-bottom: 1px solid var(--border);
}
.ch-q-text strong { color: var(--cyan); }

.ch-options {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 8px; padding: 1rem 1.25rem;
}
.ch-opt {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text-secondary);
  font-size: 12px; padding: 10px 14px; text-align: left;
  cursor: pointer; transition: all var(--transition);
  line-height: 1.4;
}
.ch-opt:hover:not(:disabled) { border-color: var(--cyan); color: var(--cyan); background: var(--cyan-dim); }
.ch-opt:disabled { cursor: not-allowed; }
.ch-opt.correct { border-color: var(--green); color: var(--green); background: var(--green-dim); }
.ch-opt.wrong   { border-color: var(--red);   color: var(--red);   background: var(--red-dim);   }

.ch-explanation {
  padding: 1rem 1.25rem; border-top: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 8px;
}
.exp-status {
  font-family: var(--font-mono); font-size: 11px; font-weight: 700;
  letter-spacing: 1px; padding: 4px 10px; border-radius: 3px; align-self: flex-start;
}
.exp-status.correct { background: var(--green-dim); color: var(--green); }
.exp-status.wrong   { background: var(--red-dim);   color: var(--red);   }
.exp-status.timeout { background: var(--orange-dim); color: var(--orange); }
.exp-text { font-family: var(--font-mono); font-size: 12px; color: var(--text-secondary); line-height: 1.6; }
.exp-text strong { color: var(--cyan); }

/* Results screen */
.ch-results {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  padding: 2.5rem; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.ch-grade {
  font-size: 4rem; font-weight: 700; letter-spacing: 4px;
  text-shadow: 0 0 30px currentColor;
}
.ch-grade.grade-good { color: var(--green); }
.ch-grade.grade-ok   { color: var(--yellow); }
.ch-grade.grade-bad  { color: var(--red); }
.ch-result-score { font-size: 1.2rem; color: var(--text-primary); font-weight: 600; }
.ch-result-msg   { font-size: 12px; color: var(--text-muted); letter-spacing: 1px; }

/* ===== FOOTER ===== */
footer {
  position: relative; z-index: 10;
  padding: 1rem 2rem; border-top: 1px solid var(--border);
  background: var(--bg-surface); text-align: center;
}
.footer-text { font-size: 11px; color: var(--text-muted); letter-spacing: 0.5px; }

/* ===== MISC ===== */
.cursor.blink { animation: blink 1s step-end infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--border-bright); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--cyan); }
::selection { background: rgba(0,212,255,0.25); color: var(--text-primary); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .sc-layout { grid-template-columns: 1fr; }
  .pf-info-row { grid-template-columns: 1fr; }
  .tab-panel { padding: 1rem; }
  header { padding: 0.75rem 1rem; }
  .ch-options { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .tab-label { display: none; }
  .pf-ctrl-group { margin-left: 0; }
  .ch-controls { margin-left: 0; }
  .vlsm-dept-hdr,
  .vlsm-dept-row { grid-template-columns: 1fr 120px 60px 32px; }
}