/* Gemeinsame Gestaltung der Rechner-Seiten (Subnetting, Zahlensysteme, Elektrotechnik) */
main.net { grid-template-columns: minmax(340px, 4fr) minmax(0, 7fr); }
@media (max-width: 980px) { main.net { grid-template-columns: minmax(0, 1fr); } }
.modeseg { margin-bottom: 16px; }
.fields { display: grid; gap: 12px; }
.fields label, .lvl { display: grid; gap: 5px; font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.fields input { text-transform: none; letter-spacing: normal; font-size: 1.05rem; font-weight: 600; color: var(--ink); font-variant-numeric: tabular-nums; padding: 10px 12px; }
.fields .seg { text-transform: none; letter-spacing: normal; justify-self: start; }
.err { margin: 0; color: var(--danger); font-size: .88rem; }
.split { margin-top: 10px; padding-top: 16px; border-top: 1px solid var(--line); display: grid; gap: 10px; }
.split h3 { margin: 0; font-size: 1rem; letter-spacing: -.015em; }
.results { padding: 20px; }
.res { display: grid; gap: 14px; }
.reshead { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; }
.reshead h2 { margin: 0; font-size: 1.6rem; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.pill { font-weight: 700; background: var(--accent-soft); color: var(--accent); border-radius: 999px; padding: 4px 12px; font-size: .84rem; }
.kvgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 10px; }
.kv { display: grid; gap: 2px; padding: 12px 14px; border-radius: 12px; background: var(--sunken); border: 1px solid var(--line); }
.kv .k { font-size: .7rem; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; color: var(--muted); }
.kv .v { font-size: 1.15rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.kv .s { font-size: .78rem; color: var(--muted); }
h3.sub { margin: 8px 0 0; font-size: .78rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.binwrap { overflow-x: auto; }
table.bin { border-collapse: collapse; font: 15px/1.6 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
table.bin th { text-align: left; font: 600 .78rem var(--ui); color: var(--muted); padding: 3px 14px 3px 0; white-space: nowrap; }
table.bin td { padding: 3px 0; white-space: nowrap; }
table.bin td.dd { padding-left: 18px; font-weight: 700; }
table.bin tr.sep td { border-top: 1px dashed var(--line-strong); padding: 0; height: 6px; }
.nb { color: var(--accent); font-weight: 700; }
.hb { color: #2f6fc4; }
:root[data-theme="dark"] .hb { color: #8ab8ff; }
.dot { color: var(--muted); }
.legend2 { margin: 6px 0 0; font-size: .82rem; color: var(--muted); }
.explain { margin: 0; padding: 12px 14px; border-radius: 12px; background: var(--accent-soft); font-size: .92rem; line-height: 1.55; }
.subwrap { overflow: auto; max-height: 420px; border: 1px solid var(--line); border-radius: 12px; }
table.subs { width: 100%; border-collapse: collapse; font-size: .88rem; font-variant-numeric: tabular-nums; }
table.subs th { position: sticky; top: 0; background: var(--sunken); text-align: left; padding: 8px 12px; font-size: .72rem; letter-spacing: .07em; text-transform: uppercase; color: var(--muted); }
table.subs td { padding: 7px 12px; border-top: 1px solid var(--line); white-space: nowrap; }
.task { padding: 14px 16px; border-radius: 12px; background: var(--sunken); border: 1px solid var(--line); display: grid; gap: 4px; font-size: 1.25rem; font-variant-numeric: tabular-nums; }
.tlabel { font-size: .7rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.thint { font-size: .82rem; color: var(--muted); }
.answers { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 480px) { .answers { grid-template-columns: 1fr; } }
.answers label { display: grid; gap: 4px; font-size: .7rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.answers input.ok { border-color: #2f9e57 !important; background: color-mix(in srgb, #2f9e57 14%, var(--surface)) !important; }
.answers input.no { border-color: #e03131 !important; background: color-mix(in srgb, #e03131 12%, var(--surface)) !important; }
.tactions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.score { font-weight: 700; }
.practice h2 { margin: 0 0 6px; }
.practice p { margin: 0 0 8px; color: var(--ink-2); max-width: 60ch; }
.hint { margin: 0; color: var(--muted); font-size: .86rem; }
.hint.pad { padding: 20px 0; }

/* IPv6 */
.verseg { margin-bottom: 10px; }
.mono6, .kv .v.mono6 { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; overflow-wrap: anywhere; }
.kv .v.mono6 { font-size: 1rem; }
.reshead h2.v6h { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 1.3rem; overflow-wrap: anywhere; }
.v6line { font: 600 1.15rem/1.6 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; letter-spacing: .02em; white-space: nowrap; }
.mix { color: #c77800; text-decoration: underline; }
:root[data-theme="dark"] .mix { color: #ffc56b; }
.steps6 { display: grid; gap: 6px; padding: 14px 16px; border-radius: 12px; background: var(--sunken); border: 1px solid var(--line); font-size: .92rem; line-height: 1.5; }
.steps6 .mono, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; overflow-wrap: anywhere; }
.task b.mono6 { display: block; font-size: 1.02rem; margin-top: 4px; }
.answers.one { grid-template-columns: 1fr; }