/* 107 – Periodensystem der Reiseelemente · Wandtafel-Typografie, IBM Plex Sans + Mono */
:root {
  --paper: #f5f3ed;
  --paper-2: #ecE8de;
  --white: #fffefb;
  --ink: #15171c;
  --ink-2: #2c3038;
  --muted: #575b63;
  --line: #d6d1c4;
  --line-2: #bdb7a8;
  --sans: 'IBM Plex Sans', 'Segoe UI', system-ui, -apple-system, Roboto, Arial, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, 'DejaVu Sans Mono', monospace;
  --wrap: 1344px;
  --pad: clamp(16px, 3.4vw, 48px);
  --ch: 70px;
  --gap: 5px;
}
.g-F { --c-bg: #c4dcf2; --c-bd: #86afd6; }
.g-B { --c-bg: #cfe2b5; --c-bd: #98bd6f; }
.g-W { --c-bg: #ade0d8; --c-bd: #62b5a8; }
.g-R { --c-bg: #f6d77a; --c-bd: #d2a935; }
.g-Z { --c-bg: #f3c4b4; --c-bd: #d68c74; }
.g-K { --c-bg: #d0d4f4; --c-bd: #8f98d9; }
.g-S { --c-bg: #efc6dd; --c-bd: #cc88b0; }
.g-N { --c-bg: #0b6b5a; --c-bd: #064a3e; --c-fg: #fff; }

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 80px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 17px/1.6 var(--sans); }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3, p, figure, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
address { font-style: normal; }
svg { fill: currentColor; }
button { font: inherit; color: inherit; }
table { border-collapse: collapse; }
:focus-visible { outline: 3px solid var(--ink); outline-offset: 2px; }
.mono { font-family: var(--mono); }
.muted { color: var(--muted); }
.skip { position: absolute; left: 12px; top: -60px; z-index: 50; background: var(--ink); color: #fff; padding: 10px 16px; font-weight: 600; text-decoration: none; }
.skip:focus { top: 12px; }
.wrap { max-width: calc(var(--wrap) + 2 * var(--pad)); margin-inline: auto; padding-inline: var(--pad); }
.sw { display: inline-block; width: 12px; height: 12px; background: var(--c-bg); box-shadow: inset 0 0 0 1px var(--c-bd); flex: none; }

/* ---------- Kopf ---------- */
.top { position: sticky; top: 0; z-index: 30; background: rgba(245, 243, 237, .95); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.top__in { display: flex; align-items: center; gap: 22px; height: 66px; }
.logo { display: block; flex: none; }
.logo img { width: 58px; aspect-ratio: 1510 / 1300; }
.top__title { font: 500 12px/1.3 var(--mono); letter-spacing: .02em; color: var(--muted); padding-left: 18px; border-left: 1px solid var(--line-2); }
.nav { margin-left: auto; display: flex; align-items: center; gap: 26px; }
.nav ul { display: flex; gap: 24px; }
.nav ul a { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; font: 500 15px/1 var(--sans); padding: 8px 0; border-bottom: 2px solid transparent; }
.nav ul a:hover { border-color: var(--ink); }
.tel { display: inline-flex; align-items: center; gap: 9px; text-decoration: none; font: 500 15px/1 var(--mono); }
.tel__sym { display: inline-grid; place-items: center; width: 28px; height: 28px; background: #d0d4f4; box-shadow: inset 0 0 0 1px #8f98d9; font: 600 12px/1 var(--sans); }
.tel:hover { text-decoration: underline; text-underline-offset: 4px; }
.lang { display: inline-grid; place-items: center; width: 40px; height: 34px; border: 1.5px solid var(--ink); text-decoration: none; font: 600 13px/1 var(--mono); letter-spacing: .04em; }
.lang:hover { background: var(--ink); color: var(--paper); }
.menu { display: none; }
.lang--mob { display: none; }

/* ---------- Hero: das Periodensystem ---------- */
.hero { padding: 26px 0 30px; }
.kicker { display: flex; align-items: center; gap: 12px; font: 500 13px/1.3 var(--mono); letter-spacing: .03em; color: var(--ink-2); }
.kicker__n { display: inline-grid; place-items: center; width: 30px; height: 30px; background: #0b6b5a; color: #fff; font: 600 13px/1 var(--sans); }
h1 { margin: 12px 0 22px; font: 600 clamp(36px, 3.75vw, 56px)/1.04 var(--sans); letter-spacing: -.028em; max-width: 26ch; text-wrap: balance; }

.pt { --shift: 0; display: grid; grid-template-columns: repeat(16, minmax(0, 1fr)); grid-template-rows: repeat(5, var(--ch)) 10px var(--ch); gap: var(--gap); }
.el { grid-row: calc(var(--r) + var(--shift)); grid-column: var(--c); position: relative; display: block; min-width: 0; padding: 0; margin: 0; border: 0; text-align: left; cursor: pointer;
  background: var(--c-bg); color: var(--c-fg, var(--ink)); box-shadow: inset 0 0 0 1px var(--c-bd); transition: transform .15s, box-shadow .15s; }
.el:hover { transform: translateY(-2px); box-shadow: inset 0 0 0 1px var(--c-bd), 0 6px 0 -2px rgba(21, 23, 28, .18); z-index: 2; }
.el[aria-pressed="true"] { box-shadow: inset 0 0 0 2.5px var(--ink); z-index: 3; }
.g-N.el[aria-pressed="true"] { box-shadow: inset 0 0 0 2.5px var(--ink), inset 0 0 0 4.5px #fff; }
.el:focus-visible { outline: 3px solid var(--ink); outline-offset: 1px; z-index: 4; }
.el__n { position: absolute; left: 6px; top: 5px; font: 500 10px/1 var(--mono); }
.el__m { position: absolute; right: 5px; top: 5px; font: 400 8.5px/1 var(--mono); opacity: .75; }
.el__s { position: absolute; left: 6px; top: 19px; font: 600 25px/1 var(--sans); letter-spacing: -.02em; }
.el__name { position: absolute; left: 6px; right: 4px; bottom: 5px; font: 500 9.5px/1.08 var(--sans); hyphens: auto; -webkit-hyphens: auto; max-height: 2.2em; overflow: hidden; }
.el--ph { grid-row: calc(5 + var(--shift)); grid-column: 3; background: repeating-linear-gradient(-45deg, transparent 0 5px, rgba(21,23,28,.08) 5px 6px), var(--white); box-shadow: inset 0 0 0 1px var(--line-2); cursor: default; }
.el--ph:hover { transform: none; box-shadow: inset 0 0 0 1px var(--line-2); }
.el--ph .el__s { color: #b0447e; }
.el--ph .el__name { font-family: var(--mono); font-size: 10px; }

.key { grid-row: calc(1 + var(--shift)) / span 3; grid-column: 3 / span 3; position: relative; background: var(--white); box-shadow: inset 0 0 0 2px var(--ink); padding: 14px 16px; display: grid; grid-template-columns: 1fr auto; grid-template-rows: auto auto 1fr auto auto; overflow: hidden; }
.key::after { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 8px; background: var(--key-c, #0b6b5a); }
.key__lbl { font: 400 9.5px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); padding-left: 6px; }
.key__lbl--m { text-align: right; }
.key__n { grid-row: 2; font: 600 22px/1.2 var(--mono); padding-left: 6px; }
.key__m { grid-row: 2; grid-column: 2; font: 400 15px/1.2 var(--mono); align-self: end; padding-bottom: 3px; text-align: right; }
.key__s { grid-row: 3; grid-column: 1 / -1; font: 600 clamp(64px, 6.2vw, 92px)/1 var(--sans); letter-spacing: -.04em; padding-left: 2px; align-self: center; }
.key__name { grid-row: 4; grid-column: 1 / -1; font: 600 17px/1.15 var(--sans); padding-left: 6px; overflow-wrap: anywhere; }
.key__group { grid-row: 5; grid-column: 1 / -1; font: 400 11px/1.4 var(--mono); color: var(--muted); padding-left: 6px; margin-top: 3px; }
.key.is-swap .key__s { animation: swap .35s ease-out; }
@keyframes swap { from { opacity: 0; transform: translateY(6px); } }

.hero__copy { grid-row: calc(1 + var(--shift)) / span 3; grid-column: 6 / span 5; padding: 4px 6px 0 18px; display: flex; flex-direction: column; justify-content: center; }
.lead { font-size: 15.5px; line-height: 1.55; color: var(--ink-2); }
.ctas { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.hero__copy .btn { padding: 11px 13px; gap: 8px; } /* beide Buttons nebeneinander – sonst ragt der Block in die nächste Elementreihe */
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 12px 18px; text-decoration: none; font: 600 15px/1 var(--sans); border: 2px solid var(--ink); transition: background .15s, color .15s; }
.btn svg { width: 18px; height: 18px; }
.btn--ink { background: var(--ink); color: var(--paper); }
.btn--ink:hover { background: #0b6b5a; border-color: #0b6b5a; }
.btn--line:hover { background: var(--ink); color: var(--paper); }
.avail { display: none; margin-top: 12px; font: 400 12px/1.4 var(--mono); color: var(--muted); }

.legend { grid-row: calc(1 + var(--shift)); grid-column: 11 / span 5; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-content: center; column-gap: 12px; row-gap: 3px; padding: 0 4px 0 8px; font: 500 11.5px/1.25 var(--mono); }
.legend li { display: flex; align-items: center; gap: 7px; white-space: nowrap; }
.legend .sw { width: 11px; height: 11px; }
.series-label { grid-row: calc(7 + var(--shift)); grid-column: 1 / span 3; align-self: center; text-align: right; padding-right: 10px; font: 500 12.5px/1.3 var(--sans); }
.series-label span:first-child { color: #b0447e; font-weight: 700; }
.series-label .mono { display: block; font-size: 11px; color: var(--muted); }
.detail { grid-row: calc(7 + var(--shift)); grid-column: 10 / span 7; align-self: stretch; padding: 9px 14px; background: var(--white); box-shadow: inset 0 0 0 1px var(--line-2); font: 400 13.5px/1.42 var(--sans); overflow: hidden; }
.detail b { font-weight: 600; margin-right: 4px; }
.detail__hint { display: none; }
.js .detail__hint { display: block; font: 400 10px/1.2 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin-bottom: 3px; }
.footnote { margin-top: 10px; font: 400 11px/1.4 var(--mono); color: var(--muted); }

/* ---------- Sektionen ---------- */
.sec { padding: clamp(80px, 9vw, 136px) 0; border-top: 1px solid var(--line); }
.sec__head { display: grid; grid-template-columns: 260px minmax(0, 1fr); column-gap: 40px; row-gap: 14px; margin-bottom: clamp(40px, 5vw, 64px); }
.sec__no { grid-row: 1 / span 2; font: 500 12.5px/1.5 var(--mono); color: var(--muted); padding-top: 10px; border-top: 2px solid var(--ink); }
.sec__no span { display: block; font: 600 34px/1.1 var(--mono); color: var(--ink); margin-bottom: 6px; }
.sec h2 { font: 600 clamp(32px, 3.6vw, 52px)/1.06 var(--sans); letter-spacing: -.025em; max-width: 22ch; text-wrap: balance; }
.sec__intro { grid-column: 2; max-width: 62ch; font-size: 18px; color: var(--ink-2); }
.sec__head--row { margin-bottom: 48px; }

.box { position: relative; display: block; background: var(--c-bg); color: var(--c-fg, var(--ink)); box-shadow: inset 0 0 0 1px var(--c-bd); }
.box__n { position: absolute; left: 10px; top: 8px; font: 500 13px/1 var(--mono); }
.box__m { position: absolute; right: 9px; top: 9px; font: 400 10.5px/1 var(--mono); opacity: .78; }
.box__s { position: absolute; left: 9px; top: 30px; font: 600 44px/1 var(--sans); letter-spacing: -.03em; }
.box__name { position: absolute; left: 10px; right: 8px; bottom: 9px; font: 500 12px/1.15 var(--sans); }

/* Schwerpunkt-Serie */
.series { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: var(--gap); }
.card { background: var(--white); box-shadow: inset 0 0 0 1px var(--line); padding-bottom: 20px; display: flex; flex-direction: column; }
.card .box { height: 104px; }
.card h3 { margin: 16px 16px 6px; font: 600 18px/1.22 var(--sans); letter-spacing: -.01em; hyphens: auto; }
.card p { margin: 0 16px; font-size: 15px; line-height: 1.5; color: var(--ink-2); hyphens: auto; }

.lab { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 40px; margin-top: 64px; }
.mini-h { font: 500 12px/1.4 var(--mono); letter-spacing: .07em; text-transform: uppercase; color: var(--muted); padding-bottom: 10px; border-bottom: 2px solid var(--ink); margin-bottom: 4px; }
.mini-h .mono { letter-spacing: .1em; color: var(--ink); margin-left: 10px; }
.consts div { display: grid; grid-template-columns: 1fr auto; align-items: baseline; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.consts dt { order: 1; font-size: 15.5px; color: var(--ink-2); }
.consts dd { order: 2; font: 600 34px/1 var(--mono); letter-spacing: -.03em; white-space: nowrap; }
.chain__row { display: flex; align-items: center; gap: 0; margin: 26px 0 18px; }
.cbox { flex: 1 1 0; min-width: 0; aspect-ratio: 1; max-width: 120px; display: flex; flex-direction: column; justify-content: flex-end; padding: 10px; background: var(--c-bg); color: var(--c-fg, var(--ink)); box-shadow: inset 0 0 0 1px var(--c-bd); }
.cbox b { font: 600 clamp(20px, 2.1vw, 30px)/1 var(--sans); letter-spacing: -.02em; }
.cbox small { font: 400 11px/1.3 var(--mono); margin-top: 4px; opacity: .85; }
.carrow { flex: 1 1 0; min-width: 28px; position: relative; height: 2px; background: var(--ink); margin: 0 6px; }
.carrow::after { content: ""; position: absolute; right: -1px; top: -4px; border: 5px solid transparent; border-left: 7px solid var(--ink); border-right: 0; }
.carrow svg { position: absolute; left: 50%; top: -24px; width: 20px; height: 20px; transform: translateX(-50%) rotate(90deg); }
.carrow--car { background: repeating-linear-gradient(90deg, var(--ink) 0 5px, transparent 5px 9px); }
.carrow--car svg { transform: translateX(-50%); }
.chain__text { font-size: 16.5px; }
.chain__note { margin-top: 6px; font: 400 13px/1.45 var(--mono); color: var(--muted); }

/* Leistungen */
.sheets { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 48px; }
.sheet { display: grid; grid-template-columns: 132px minmax(0, 1fr); gap: 24px; padding: 28px 0; border-top: 1px solid var(--line); }
.sheet:nth-child(-n+2) { border-top: 2px solid var(--ink); }
.box--l { width: 132px; height: 132px; }
.box--l .box__s { top: 36px; font-size: 52px; }
.sheet__g { font: 500 11.5px/1.3 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.sheet h3 { margin: 6px 0 8px; font: 600 24px/1.2 var(--sans); letter-spacing: -.015em; }
.sheet p:last-child { color: var(--ink-2); max-width: 48ch; }

/* Ablauf als Reaktionsgleichung */
.eq { display: grid; grid-template-columns: minmax(0, 1fr) 54px minmax(0, 1fr) 120px minmax(0, 1fr) 120px minmax(0, 1fr); align-items: start; }
.box--m { width: 96px; height: 96px; }
.box--m .box__s { top: 32px; font-size: 40px; }
.eq__term h3 { margin: 18px 0 6px; font: 600 21px/1.2 var(--sans); }
.eq__term p { font-size: 15.5px; color: var(--ink-2); padding-right: 12px; hyphens: auto; }
.eq__op { height: 96px; display: flex; flex-direction: column; align-items: center; justify-content: center; font: 300 46px/1 var(--sans); }
.eq__op--arrow { padding: 0 10px; }
.eq__op--arrow small { font: 500 11px/1.25 var(--mono); text-align: center; color: var(--muted); margin-bottom: 6px; }
.eq__op--arrow svg { width: 100%; height: 14px; }

/* Über uns */
.about__grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(32px, 5vw, 80px); align-items: start; }
.about__fig img { width: 100%; aspect-ratio: 1; object-fit: cover; box-shadow: 0 0 0 1px var(--line); }
.about__fig figcaption { margin-top: 10px; font-size: 14px; color: var(--muted); }
.about__fig figcaption .mono { color: var(--ink); margin-right: 8px; }
.about__sheet .sec__no { display: block; border-top: 2px solid var(--ink); }
.about__sheet .sec__no span { display: inline; font-size: inherit; margin-right: 10px; }
.about__head { display: flex; align-items: center; gap: 24px; margin: 26px 0 22px; }
.about__head .box { flex: none; }
.about__text { font-size: 18px; color: var(--ink-2); max-width: 60ch; }
.props { width: 100%; margin-top: 32px; }
.props caption { text-align: left; font: 500 12px/1.4 var(--mono); letter-spacing: .07em; text-transform: uppercase; color: var(--muted); padding-bottom: 10px; border-bottom: 2px solid var(--ink); }
.props th { width: 44px; text-align: left; font: 500 14px/1 var(--mono); color: var(--muted); padding: 13px 0; vertical-align: top; }
.props td { padding: 11px 0; font-weight: 500; }
.props tr { border-bottom: 1px solid var(--line); }

/* Kontakt */
.contact__grid { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: clamp(32px, 5vw, 72px); align-items: start; }
.links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--gap); }
.box--link { aspect-ratio: 1.18; text-decoration: none; transition: transform .15s, box-shadow .15s; }
a.box--link:hover { transform: translateY(-3px); box-shadow: inset 0 0 0 2px var(--ink), 0 8px 0 -3px rgba(21, 23, 28, .2); }
.box--link .box__s { top: 34px; font-size: clamp(48px, 5vw, 68px); }
.box--link .box__name { bottom: 34px; font-size: 13px; }
.box--link .box__val { position: absolute; left: 10px; right: 8px; bottom: 10px; font: 500 14px/1.2 var(--mono); overflow-wrap: anywhere; }
.data { width: 100%; border-top: 2px solid var(--ink); }
.data tr { border-bottom: 1px solid var(--line); }
.data th { width: 34%; text-align: left; vertical-align: top; padding: 14px 16px 14px 0; font: 500 12px/1.6 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.data td { padding: 12px 0; font-size: 17px; }
.data a { text-decoration-thickness: 1.5px; text-underline-offset: 3px; }
.data a:hover { color: #0b6b5a; }

/* Fuß */
.foot { border-top: 2px solid var(--ink); padding: 34px 0 90px; background: var(--paper-2); }
.foot__in { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.logo--foot img { width: 84px; }
.foot__txt { flex: 1; min-width: 260px; }
.foot__title { font: 600 15px/1.4 var(--sans); }
.foot__copy { font: 400 12.5px/1.5 var(--mono); color: var(--muted); margin-top: 4px; }
.foot__nav { display: flex; flex-wrap: wrap; gap: 6px; }
.foot__nav a { padding: 8px 12px; box-shadow: inset 0 0 0 1px var(--line-2); text-decoration: none; font: 500 13px/1 var(--mono); background: var(--white); }
.foot__nav a:hover { box-shadow: inset 0 0 0 1.5px var(--ink); }

/* ---------- Rechtsseiten ---------- */
.legal { padding: clamp(40px, 6vw, 80px) 0 clamp(80px, 9vw, 120px); }
.legal__grid { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 40px; }
.legal__side { position: sticky; top: 96px; align-self: start; }
.legal__side .box { width: 160px; height: 160px; }
.legal__side .box__s { top: 44px; font-size: 68px; }
.back { display: inline-block; margin-top: 20px; font: 500 14px/1.4 var(--mono); text-decoration: none; border-bottom: 1.5px solid var(--ink); }
.back:hover { color: #0b6b5a; border-color: #0b6b5a; }
.legal__kicker { font: 500 12.5px/1.4 var(--mono); letter-spacing: .07em; text-transform: uppercase; color: var(--muted); padding-top: 10px; border-top: 2px solid var(--ink); }
.legal h1 { margin: 12px 0 34px; font-size: clamp(32px, 4vw, 52px); max-width: 20ch; hyphens: manual; }
.legal-body { max-width: 70ch; }
.legal-body h2 { font: 600 22px/1.3 var(--sans); margin: 40px 0 10px; letter-spacing: -.01em; display: flex; gap: 12px; align-items: baseline; }
.legal-body h2::before { content: "§"; font: 500 14px/1 var(--mono); color: var(--muted); }
.legal-body p, .legal-body ul { margin: 0 0 14px; }
.legal-body ul { padding-left: 0; }
.legal-body li { position: relative; padding-left: 24px; margin-bottom: 6px; }
.legal-body li::before { content: ""; position: absolute; left: 2px; top: .55em; width: 10px; height: 10px; background: #c4dcf2; box-shadow: inset 0 0 0 1px #86afd6; }
.legal-body a { text-decoration-thickness: 1.5px; text-underline-offset: 3px; overflow-wrap: anywhere; }
.legal-body .legal-note { padding: 14px 18px; background: #f6d77a; box-shadow: inset 0 0 0 1px #d2a935; font-size: 15.5px; margin-bottom: 28px; }
.legal-body .legal-address { padding: 14px 18px; background: var(--white); box-shadow: inset 0 0 0 1px var(--line-2); font-family: var(--mono); font-size: 15px; white-space: pre-line; }

/* ---------- Responsiv ---------- */
@media (max-width: 1240px) {
  .pt { --shift: 1; grid-template-rows: auto repeat(5, var(--ch)) 10px var(--ch); }
  .hero__copy { grid-row: 1; grid-column: 1 / -1; padding: 0 0 22px; flex-direction: row; flex-wrap: wrap; align-items: flex-end; gap: 0 40px; }
  .hero__copy .lead { flex: 1 1 480px; max-width: 64ch; font-size: 17px; }
  .hero__copy .ctas { margin-top: 14px; }
  .hero__copy .avail { display: block; flex-basis: 100%; }
  .key { grid-column: 3 / span 4; }
  .legend { grid-column: 7 / span 4; grid-row: calc(1 + var(--shift)) / span 2; grid-template-columns: 1fr 1fr; }
  .series { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .el__m, .el__name { display: none; }
  .el__s { top: 50%; transform: translateY(-38%); font-size: 24px; }
  .eq { grid-template-columns: minmax(0, 1fr) 40px minmax(0, 1fr) 90px minmax(0, 1fr) 90px minmax(0, 1fr); }
}
@media (max-width: 1100px) {
  .top__title { display: none; }
}
@media (max-width: 1023px) {
  :root { --ch: 56px; }
  .el__s { font-size: 20px; }
  .lang--mob { display: inline-grid; margin-left: auto; }
  .menu { display: inline-flex; align-items: center; gap: 10px; height: 40px; padding: 0 14px; border: 1.5px solid var(--ink); background: var(--white); font: 600 14px/1 var(--mono); cursor: pointer; }
  .menu__ico { display: grid; grid-template-columns: 7px 7px; gap: 2px; }
  .menu__ico i { width: 7px; height: 7px; background: var(--ink); }
  .menu__ico i:nth-child(2) { background: #f6d77a; box-shadow: inset 0 0 0 1px var(--ink); }
  .js .nav { display: none; }
  .nav { position: absolute; left: 0; right: 0; top: 100%; background: var(--paper); border-bottom: 2px solid var(--ink); padding: 8px var(--pad) 22px; flex-direction: column; align-items: stretch; gap: 14px; }
  .js .top.open .nav { display: flex; }
  .nav ul { flex-direction: column; gap: 0; }
  .nav ul a { display: flex; padding: 15px 0; border-bottom: 1px solid var(--line); font-size: 18px; }
  .nav .tel { font-size: 17px; }
  .sec__head { grid-template-columns: 1fr; }
  .sec__no { grid-row: auto; }
  .sec__intro { grid-column: 1; }
  .lab { grid-template-columns: 1fr; }
  .sheets { grid-template-columns: 1fr; }
  .sheet:nth-child(2) { border-top-width: 1px; }
  .eq { grid-template-columns: 1fr; gap: 0; }
  .eq__term { display: grid; grid-template-columns: 96px minmax(0, 1fr); column-gap: 22px; }
  .eq__term .box { grid-row: 1 / span 2; }
  .eq__term h3 { margin-top: 4px; }
  .eq__op { height: 56px; width: 96px; font-size: 34px; }
  .eq__op--arrow { position: relative; flex-direction: row; justify-content: flex-start; width: auto; height: 64px; padding: 0 0 0 calc(var(--bw, 96px) / 2 + 22px); justify-self: stretch; }
  .eq__op--arrow svg { display: none; }
  .eq__op--arrow::before { content: ""; position: absolute; left: calc(var(--bw, 96px) / 2 - 1px); top: 8px; bottom: 8px; width: 2px; background: var(--ink); }
  .eq__op--arrow::after { content: ""; position: absolute; left: calc(var(--bw, 96px) / 2 - 6px); bottom: 6px; border: 6px solid transparent; border-top: 8px solid var(--ink); border-bottom: 0; }
  .eq__op--arrow small { margin: 0; text-align: left; }
  .about__grid, .contact__grid { grid-template-columns: 1fr; }
  .about__fig { max-width: 520px; }
  .legal__grid { grid-template-columns: 1fr; gap: 24px; }
  .legal__side { position: static; display: flex; gap: 20px; align-items: flex-end; }
  .legal__side .box { width: 110px; height: 110px; }
  .legal__side .box__s { top: 32px; font-size: 46px; }
}
@media (max-width: 700px) {
  :root { --gap: 2px; }
  body { font-size: 16.5px; }
  .top__in { height: 60px; }
  .logo img { width: 52px; }
  .tel__sym { display: none; }
  h1 { font-size: clamp(30px, 8.4vw, 40px); }
  .pt { --shift: 2; --ch: auto; grid-template-rows: auto auto repeat(5, auto) 8px auto auto auto; }
  .el { aspect-ratio: 1; }
  .el:hover { transform: none; }
  .el__n, .el__name { display: none; }
  .el__s { position: static; display: grid; place-items: center; height: 100%; font-size: 10px; letter-spacing: 0; }
  .el--ph .el__s { font-size: 12px; }
  .key { grid-row: 2; grid-column: 1 / -1; margin-bottom: 14px; grid-template-columns: auto 1fr auto; grid-template-rows: auto auto auto; column-gap: 16px; padding: 12px 14px 12px 22px; }
  .key__lbl { display: none; }
  .key__n { grid-row: 1; grid-column: 1; font-size: 16px; padding: 0; }
  .key__m { grid-row: 1; grid-column: 3; font-size: 13px; }
  .key__s { grid-row: 1 / span 3; grid-column: 1; font-size: 64px; padding: 22px 0 0; align-self: start; }
  .key__name { grid-row: 2; grid-column: 2 / span 2; font-size: 20px; padding: 0; align-self: end; }
  .key__group { grid-row: 3; grid-column: 2 / span 2; padding: 0; }
  .hero__copy { padding-bottom: 18px; }
  .hero__copy .lead { flex-basis: 100%; font-size: 16.5px; }
  .legend { grid-row: 11; grid-column: 1 / -1; grid-template-columns: repeat(2, minmax(0, 1fr)); padding: 14px 0 0; row-gap: 6px; }
  .series-label { display: none; }
  .detail { grid-row: 10; grid-column: 1 / -1; margin-top: 10px; }
  .series { grid-template-columns: 1fr 1fr; }
  .card .box { height: 84px; }
  .card .box__s { top: 26px; font-size: 36px; }
  .card h3 { margin: 12px 12px 6px; font-size: 16.5px; }
  .card p { margin: 0 12px; font-size: 14.5px; }
  .chain__row { margin-top: 34px; }
  .cbox { flex: 0 0 50px; padding: 6px; }
  .cbox b { font-size: 15px; }
  .cbox small { display: none; }
  .carrow { min-width: 14px; margin: 0 3px; }
  .carrow svg { width: 15px; height: 15px; top: -21px; }
  .sheet { grid-template-columns: 88px minmax(0, 1fr); gap: 16px; }
  .box--l { width: 88px; height: 88px; }
  .box--l .box__s { top: 26px; font-size: 34px; }
  .box--l .box__name, .box--l .box__m { display: none; }
  .sheet h3 { font-size: 21px; }
  .eq__term { grid-template-columns: 72px minmax(0, 1fr); column-gap: 16px; }
  .box--m { width: 72px; height: 72px; }
  .box--m .box__s { top: 24px; font-size: 30px; }
  .eq { --bw: 72px; }
  .eq__op { width: 72px; }
  .eq__op--arrow { width: auto; }
  .about__head { gap: 16px; }
  .links { grid-template-columns: 1fr 1fr; }
  .box--link .box__s { top: 28px; font-size: 40px; }
  .box--link .box__val { font-size: 12px; }
  .box--link .box__name { bottom: 30px; font-size: 12px; }
  .data th { width: auto; display: block; padding: 12px 0 0; }
  .data td { display: block; padding: 2px 0 12px; }
  .data tr { display: block; }
  .foot__in { flex-direction: column; align-items: flex-start; }
}