/* AMP Loudspeakers */

@font-face {
  font-family: 'Inter Tight';
  src: url('../fonts/intertight.woff2') format('woff2');
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('../fonts/plexmono-400.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('../fonts/plexmono-500.woff2') format('woff2');
  font-weight: 500;
  font-display: swap;
}

:root {
  /* Graphite */
  --bg: #1a1e23;
  --bg-deep: #121519;
  --stage: #090807;          /* matches the black of the dark renders */
  --line: #2f363e;
  --line-strong: #48525d;
  --text: #e8ecf0;
  --muted: #9ba4ad;
  --faint: #6c7682;

  /* Light band: matches the background of the light renders */
  --paper: #cdcac6;
  --paper-ink: #16191d;
  --paper-muted: #50565d;
  --paper-line: #b3afaa;

  --sans: 'Inter Tight', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --wrap: 1280px;
  --gutter: clamp(16px, 4.5vw, 56px);
  --space: clamp(96px, 14vw, 200px);
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 72px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 18px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

h1, h2, h3 {
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.02;
  text-wrap: balance;
}
h1 { font-size: clamp(2.8rem, 7vw, 6.2rem); }
h2 { font-size: clamp(2.2rem, 5vw, 4.4rem); }
h3 { font-size: clamp(2.2rem, 4vw, 3.6rem); }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }

.eyebrow, .role, label {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow { margin-bottom: 1.5rem; }

.visually-hidden, .hp {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

.skip {
  position: absolute; left: 16px; top: -100px; z-index: 100;
  padding: 10px 14px; background: var(--text); color: var(--bg-deep);
}
.skip:focus { top: 12px; }

:focus-visible { outline: 2px solid currentColor; outline-offset: 3px; }

/* Scroll reveal: elements are only hidden once JS is running to show them */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity 1.1s ease, transform 1.1s cubic-bezier(.2,.7,.2,1); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
}

/* Header */

.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background .4s, border-color .4s;
}
.site-header.scrolled {
  background: color-mix(in srgb, var(--bg-deep) 86%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }

.brand { color: var(--text); }
.brand-mark { width: 76px; color: var(--text); }

.site-nav { display: flex; align-items: center; gap: 36px; }
.site-nav a {
  text-decoration: none; font-size: 0.92rem; font-weight: 500; color: var(--muted);
  transition: color .2s;
}
.site-nav a:hover { color: var(--text); }
.site-nav .nav-cta { color: var(--text); padding: 9px 18px; border: 1px solid var(--line-strong); }
.site-nav .nav-cta:hover { border-color: var(--text); }

.nav-toggle { display: none; }

@media (max-width: 760px) {
  .nav-toggle {
    display: grid; place-items: center; width: 44px; height: 44px; margin-right: -10px;
    background: none; border: 0; color: var(--text); cursor: pointer;
  }
  .bars, .bars::before, .bars::after {
    display: block; width: 20px; height: 1.5px; background: currentColor; transition: transform .2s;
  }
  .bars { position: relative; }
  .bars::before, .bars::after { content: ''; position: absolute; left: 0; }
  .bars::before { top: -6px; }
  .bars::after { top: 6px; }
  .nav-open .bars { background: transparent; }
  .nav-open .bars::before { transform: translateY(6px) rotate(45deg); }
  .nav-open .bars::after { transform: translateY(-6px) rotate(-45deg); }
  .nav-open .site-header { background: var(--bg-deep); }

  .site-nav {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    padding: 8px var(--gutter) 24px; background: var(--bg-deep); border-bottom: 1px solid var(--line);
  }
  .nav-open .site-nav { display: flex; }
  .site-nav a { padding: 16px 0; border-bottom: 1px solid var(--line); font-size: 1.1rem; }
  .site-nav .nav-cta { margin-top: 20px; text-align: center; padding: 14px; }
}

/* Hero */

.hero { background: var(--stage); padding-top: clamp(128px, 16vw, 200px); text-align: center; overflow: hidden; }
.hero-copy { position: relative; z-index: 1; }
.hero .eyebrow { color: var(--faint); }
.hero-sub { max-width: 36rem; margin: 2rem auto 0; font-size: 1.12rem; color: var(--muted); }
.hero-media { margin-top: clamp(-40px, -3vw, 0px); }
.hero-media img {
  width: 100%; max-width: 1800px; margin: 0 auto;
  -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 18%, #000 80%, transparent 100%);
          mask-image: linear-gradient(to bottom, transparent 0, #000 18%, #000 80%, transparent 100%);
}
@media (max-width: 700px) {
  .hero-media img { width: 150%; max-width: none; margin-left: -25%; }
}

/* Statement */

.statement { padding: var(--space) 0; background: linear-gradient(var(--stage), var(--bg) 60%); }
.statement-text {
  max-width: 58rem; margin: 0;
  font-size: clamp(1.5rem, 2.9vw, 2.45rem); font-weight: 400; line-height: 1.3; letter-spacing: -0.02em;
  color: var(--muted); text-wrap: pretty;
}
.statement-text strong { font-weight: 500; color: var(--text); }

/* The system */

.system-head { padding-bottom: clamp(56px, 8vw, 112px); }

.panel-inner {
  display: grid; grid-template-columns: 1.1fr 1fr; align-items: center;
  gap: clamp(32px, 6vw, 112px);
  padding-top: clamp(40px, 6vw, 96px); padding-bottom: clamp(40px, 6vw, 96px);
}
.panel-flip .panel-media { order: 2; }
.panel-media { margin: 0; }
.panel-media img { width: 100%; }

.panel-light { background: var(--paper); color: var(--paper-ink); }
.panel-light .role, .panel-light .more { color: var(--paper-muted); }
.panel-light .panel-copy > p:not(.role):not(.figures) { color: var(--paper-muted); }
.panel-light .figures { border-color: var(--paper-line); color: var(--paper-muted); }
.panel-light .figures span:not(.sep) { color: var(--paper-ink); }
.panel-light .panel-media img {
  -webkit-mask-image: radial-gradient(ellipse 58% 56% at 50% 50%, #000 55%, transparent 100%);
          mask-image: radial-gradient(ellipse 58% 56% at 50% 50%, #000 55%, transparent 100%);
}
.panel-light + .panel-light .panel-inner { padding-top: 0; }

.panel-dark { background: #000; }
.panel-dark .panel-media img {
  -webkit-mask-image: radial-gradient(ellipse 60% 58% at 50% 55%, #000 50%, transparent 100%);
          mask-image: radial-gradient(ellipse 60% 58% at 50% 55%, #000 50%, transparent 100%);
}

.panel-copy { max-width: 30rem; }
.panel-copy .role { margin-bottom: 1.25rem; }
.panel-copy h3 { margin-bottom: 1.5rem; }
.panel-copy > p:not(.role):not(.figures) { color: var(--muted); font-size: 1.08rem; }

.figures {
  margin: 2rem 0 0 !important; padding-top: 1.1rem; border-top: 1px solid var(--line-strong);
  font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.04em; color: var(--muted);
}
.figures span:not(.sep) { font-size: 1.05rem; color: var(--text); margin-right: 4px; }
.figures .sep { margin: 0 12px; opacity: .5; }
.figures-pending { color: var(--faint) !important; text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.72rem; }

.more {
  display: inline-flex; align-items: center; gap: 10px; margin-top: 2rem;
  font-size: 0.95rem; font-weight: 500; text-decoration: none; color: var(--muted);
  transition: gap .25s, color .2s;
}
.more::after { content: '\2192'; }
.more:hover { gap: 16px; }
.panel-light .more:hover { color: var(--paper-ink); }
.panel-dark .more:hover { color: var(--text); }

@media (max-width: 900px) {
  .panel-inner { grid-template-columns: 1fr; }
  .panel-flip .panel-media { order: 0; }
  .panel-media { max-width: 520px; }
  .panel-light + .panel-light .panel-inner { padding-top: clamp(40px, 6vw, 96px); border-top: 1px solid var(--paper-line); }
}

/* RP22 */

.rp22 { padding: var(--space) 0; background: var(--bg); }
.rp22-head { max-width: 50rem; }
.rp22-intro { margin-top: 2rem; font-size: 1.15rem; color: var(--muted); max-width: 42rem; }

.levels {
  list-style: none; margin: clamp(64px, 8vw, 104px) 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(16px, 2.4vw, 32px);
}
.levels li { display: flex; flex-direction: column; padding-top: 24px; border-top: 1px solid var(--line-strong); }
.lv-key { border-top: 2px solid var(--text) !important; padding-top: 23px !important; }
.lv-db { font-size: clamp(2.6rem, 5vw, 4.4rem); font-weight: 500; letter-spacing: -0.045em; line-height: 1; color: var(--muted); }
.lv-key .lv-db { color: var(--text); }
.lv-db small { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.04em; color: var(--faint); margin-left: 6px; }
.lv-name { margin-top: 18px; font-family: var(--mono); font-size: 0.72rem; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--faint); }
.lv-key .lv-name { color: var(--text); }
.lv-desc { margin-top: 6px; font-size: 0.95rem; color: var(--muted); line-height: 1.4; }

.source { margin-top: 48px; max-width: 48rem; font-size: 0.82rem; line-height: 1.6; color: var(--faint); }

@media (max-width: 700px) {
  .levels { grid-template-columns: repeat(2, 1fr); row-gap: 40px; }
}

/* Made in the UK */

.made { padding: var(--space) 0; background: var(--paper); color: var(--paper-ink); }
.made .eyebrow { color: var(--paper-muted); }
.made-inner { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 112px); align-items: end; }
.made-copy > p { font-size: 1.3rem; line-height: 1.45; letter-spacing: -0.01em; }
.cedia-row { display: flex; align-items: center; gap: 28px; margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--paper-line); }
.cedia { width: 128px; flex: none; }
.cedia-row p { font-size: 0.95rem; color: var(--paper-muted); }
@media (max-width: 800px) { .made-inner { grid-template-columns: 1fr; } }
@media (max-width: 480px) { .cedia-row { flex-direction: column; align-items: flex-start; } }

/* Enquire */

.enquire { padding: var(--space) 0; background: var(--bg-deep); }
.enquire-inner { display: grid; grid-template-columns: 5fr 6fr; gap: clamp(40px, 6vw, 112px); }
.enquire-lede { margin-top: 1.75rem; font-size: 1.15rem; color: var(--muted); max-width: 26rem; }
@media (max-width: 860px) { .enquire-inner { grid-template-columns: 1fr; } }

.form { display: grid; grid-template-columns: 1fr 1fr; gap: 28px 24px; align-content: start; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field-wide { grid-column: 1 / -1; }
@media (max-width: 560px) { .form { grid-template-columns: 1fr; } }

label { font-size: 0.68rem; }
.opt { color: var(--faint); text-transform: none; letter-spacing: 0.02em; margin-left: 4px; }

input, select, textarea {
  width: 100%; font: inherit; font-size: 1.05rem; color: var(--text);
  background: transparent; border: 0; border-bottom: 1px solid var(--line-strong); border-radius: 0;
  padding: 10px 0; transition: border-color .2s;
}
input:focus, select:focus, textarea:focus { outline: none; border-bottom-color: var(--text); }
select {
  appearance: none; -webkit-appearance: none; cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 10px) 55%, calc(100% - 5px) 55%;
  background-size: 5px 5px; background-repeat: no-repeat;
}
select option { background: var(--bg-deep); color: var(--text); }
select:invalid { color: var(--faint); }
textarea { resize: vertical; min-height: 120px; }

.button {
  grid-column: 1 / -1; justify-self: start; margin-top: 8px;
  font: 500 1rem var(--sans);
  color: var(--bg-deep); background: var(--text); border: 0;
  padding: 16px 40px; cursor: pointer; transition: background .2s;
}
.button:hover { background: #fff; }

/* Footer */

.site-footer { background: var(--stage); padding: 72px 0 40px; color: var(--muted); }
.footer-inner { display: grid; grid-template-columns: 2fr 1.2fr 1fr; gap: 40px; }
.footer-mark { width: 92px; color: var(--text); margin-bottom: 20px; }
.footer-brand p { font-size: 0.95rem; max-width: 18rem; }
address { font-style: normal; font-size: 0.92rem; line-height: 1.7; }
.footer-nav { display: flex; flex-direction: column; gap: 10px; font-size: 0.92rem; }
.footer-nav a { text-decoration: none; transition: color .2s; }
.footer-nav a:hover { color: var(--text); }
.legal {
  grid-column: 1 / -1; margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--line);
  font-size: 0.8rem; color: var(--faint);
}
@media (max-width: 760px) { .footer-inner { grid-template-columns: 1fr; } }

/* Product pages */

.site-nav a[aria-current] { color: var(--text); }

.product-hero { background: #000; padding-top: clamp(112px, 12vw, 160px); overflow: hidden; }
.crumbs { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--faint); margin-bottom: 1.5rem; }
.crumbs a { text-decoration: none; color: var(--muted); }
.crumbs a:hover { color: var(--text); }
.crumbs span { margin: 0 8px; }
.product-sub { max-width: 34rem; margin-top: 1.5rem; font-size: clamp(1.1rem, 1.6vw, 1.35rem); color: var(--muted); }
.product-hero-media { margin-top: clamp(-120px, -8vw, -40px); }
.product-hero-media img {
  width: 100%; max-width: 1800px; margin: 0 auto;
  -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 22%, #000 78%, transparent 100%);
          mask-image: linear-gradient(to bottom, transparent 0, #000 22%, #000 78%, transparent 100%);
}
@media (max-width: 700px) {
  .product-hero-media { margin-top: 0; }
  .product-hero-media img { width: 140%; max-width: none; margin-left: -20%; }
}

.keyfigs {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin: 0;
  padding: 40px 0 clamp(64px, 8vw, 112px); border-top: 1px solid var(--line);
}
.keyfigs > div { padding-right: 24px; }
.keyfigs dt { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--faint); margin-bottom: 10px; }
.keyfigs dd { margin: 0; font-size: clamp(1.8rem, 3.4vw, 3rem); font-weight: 500; letter-spacing: -0.04em; line-height: 1; }
.keyfigs small, .mini-levels small { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.04em; color: var(--muted); margin: 0 4px 0 5px; }
@media (max-width: 760px) { .keyfigs { grid-template-columns: repeat(2, 1fr); row-gap: 32px; } }

.story { padding: var(--space) 0; background: var(--bg); }
.story-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 7vw, 128px); align-items: center; }
.story-block h2 { font-size: clamp(2rem, 4vw, 3.4rem); margin-bottom: 1.75rem; }
.story-block h3 { font-size: 1.5rem; letter-spacing: -0.025em; margin-bottom: 1rem; }
.story-block > p:not(.eyebrow):not(.spec-note) { color: var(--muted); font-size: 1.08rem; }
.story-media { margin: 0; background: var(--paper); }
.story-media img {
  width: 100%;
  -webkit-mask-image: radial-gradient(ellipse 58% 56% at 50% 50%, #000 55%, transparent 100%);
          mask-image: radial-gradient(ellipse 58% 56% at 50% 50%, #000 55%, transparent 100%);
}
.story-cols {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(32px, 4vw, 64px);
  margin-top: clamp(80px, 10vw, 144px); padding-top: 48px; border-top: 1px solid var(--line);
}
.story-cols-2 { grid-template-columns: 1fr 1fr; margin-top: 0; padding-top: 0; border-top: 0; gap: clamp(40px, 7vw, 128px); }
.story-cols .story-block > p:not(.eyebrow):not(.spec-note) { font-size: 1rem; }
@media (max-width: 900px) {
  .story-grid, .story-cols, .story-cols-2 { grid-template-columns: 1fr; }
}

.mini-levels { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 2rem 0 0; }
.mini-levels > div { border-top: 1px solid var(--line-strong); padding-top: 14px; }
.mini-levels .lv-key { border-top: 2px solid var(--text); padding-top: 13px; }
.mini-levels dt { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--faint); }
.mini-levels .lv-key dt { color: var(--text); }
.mini-levels dd { margin: 8px 0 0; font-size: 1.8rem; font-weight: 500; letter-spacing: -0.04em; }
@media (max-width: 480px) { .mini-levels { grid-template-columns: repeat(2, 1fr); } }

.specs-section, .layout-example { padding: var(--space) 0; background: var(--bg-deep); }
.specs-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: clamp(40px, 7vw, 128px); }
@media (max-width: 860px) { .specs-grid { grid-template-columns: 1fr; } }
.spec-table { margin: 0; border-top: 1px solid var(--line-strong); }
.spec-table > div {
  display: grid; grid-template-columns: 1fr 1.3fr; gap: 24px; padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.spec-table dt { color: var(--muted); font-size: 0.98rem; }
.spec-table dd { margin: 0; font-family: var(--mono); font-size: 0.95rem; line-height: 1.6; }
@media (max-width: 480px) { .spec-table > div { grid-template-columns: 1fr; gap: 4px; } }
.spec-note { margin-top: 24px; font-size: 0.85rem; line-height: 1.6; color: var(--faint); max-width: 40rem; }
.layout-lede { margin-top: 1.5rem; color: var(--muted); font-size: 1.08rem; max-width: 26rem; }

.range-card { display: flex; flex-direction: column; text-decoration: none; color: var(--text); }
.range-img { overflow: hidden; }
.range-card:hover img { transform: scale(1.03); }
.pair-role { margin-top: 20px; font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--faint); }

.cta-band { padding: clamp(96px, 12vw, 176px) 0; background: var(--stage); text-align: center; }
.system-row {
  display: flex; flex-wrap: wrap; justify-content: center; align-items: baseline; gap: 10px 28px;
  margin-bottom: clamp(64px, 8vw, 112px); padding-bottom: 32px; border-bottom: 1px solid var(--line);
  font-size: 1rem;
}
.system-label { flex-basis: 100%; margin-bottom: 6px; font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--faint); }
.system-row a { color: var(--muted); text-decoration: none; transition: color .2s; }
.system-row a:hover { color: var(--text); }
.system-row [aria-current] { color: var(--text); font-weight: 500; }

a.inline { color: var(--text); text-decoration: underline; text-decoration-color: var(--line-strong); text-underline-offset: 4px; transition: text-decoration-color .2s; }
a.inline:hover { text-decoration-color: var(--text); }
.cta-inner p { margin: 1.25rem auto 2.5rem; color: var(--muted); font-size: 1.15rem; max-width: 30rem; }
.cta-band .button { display: inline-block; text-decoration: none; }

/* Range page */

.range-hero { background: #000; padding: clamp(144px, 16vw, 208px) 0 clamp(56px, 7vw, 96px); }
.range-list { background: #000; padding-bottom: var(--space); }
.range-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(16px, 2.4vw, 32px); }
.range-img { display: block; background: #000; }
.range-img-light { background: var(--paper); }
.range-img img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; transition: transform .8s cubic-bezier(.2,.7,.2,1); }
.range-name { margin-top: 6px; font-size: clamp(1.8rem, 2.6vw, 2.4rem); font-weight: 600; letter-spacing: -0.035em; }
.range-line { margin-top: 10px; color: var(--muted); font-size: 1rem; }
.range-card .more { margin-top: 1.25rem; }
.range-card:hover .more { gap: 16px; color: var(--text); }
@media (max-width: 900px) { .range-grid { grid-template-columns: 1fr; max-width: 560px; } }

/* Guides */

.guide-hero { background: var(--stage); padding: clamp(144px, 16vw, 200px) 0 clamp(56px, 7vw, 96px); }
.guide-wrap { max-width: 880px; }
.guide-hero h1 { font-size: clamp(2.6rem, 6vw, 5rem); }
.guide-lede { margin-top: 1.75rem; font-size: clamp(1.15rem, 1.8vw, 1.4rem); line-height: 1.5; color: var(--muted); max-width: 40rem; }
.guide-answer {
  margin-top: 2.5rem; padding: 24px 0 0; border-top: 2px solid var(--text);
  font-size: clamp(1.25rem, 2.2vw, 1.7rem); line-height: 1.35; letter-spacing: -0.015em; max-width: 44rem;
}

.guide-body { padding: clamp(64px, 8vw, 112px) 0 var(--space); background: var(--bg); }
.prose h2 { font-size: clamp(1.8rem, 3.2vw, 2.6rem); margin: clamp(56px, 7vw, 88px) 0 1.25rem; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 1.35rem; letter-spacing: -0.02em; margin: 2.25rem 0 0.75rem; }
.prose p, .prose li { color: var(--muted); font-size: 1.08rem; line-height: 1.7; }
.prose strong { color: var(--text); font-weight: 500; }
.prose ul { margin: 0 0 1.5em; padding-left: 1.2em; }
.prose li { margin-bottom: 0.75em; }
.prose li::marker { color: var(--faint); }
.prose .formula {
  margin: 1.75rem 0; padding: 20px 24px; border-left: 2px solid var(--text); background: var(--bg-deep);
  font-family: var(--mono); font-size: 0.92rem; line-height: 1.7; color: var(--text);
}
.guide-next { margin-top: clamp(56px, 7vw, 88px) !important; padding-top: 24px; border-top: 1px solid var(--line); }
.prose .source { margin-top: 1.5rem; }

.table-scroll { overflow-x: auto; margin: 1.75rem 0 0.5rem; -webkit-overflow-scrolling: touch; }
.data-table { width: 100%; min-width: 560px; border-collapse: collapse; font-size: 0.95rem; }
.data-table th, .data-table td { padding: 14px 12px 14px 0; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.data-table thead th {
  font-family: var(--mono); font-size: 0.68rem; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--faint); border-bottom-color: var(--line-strong);
}
.data-table tbody th { font-weight: 400; color: var(--muted); }
.data-table td { font-family: var(--mono); font-size: 0.9rem; color: var(--text); white-space: nowrap; }
.data-table .col-key { color: var(--text); }
.data-table td.col-key { font-weight: 500; }
.table-note { font-size: 0.85rem !important; color: var(--faint) !important; }

.level-list { list-style: none; padding: 0 !important; margin: 1.75rem 0 !important; display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.level-list li { margin: 0; padding: 20px 20px 22px; background: var(--bg-deep); border-top: 1px solid var(--line-strong); }
.level-list li.lv-key { border-top: 2px solid var(--text); }
.level-list b { display: block; margin-bottom: 6px; font-family: var(--mono); font-size: 0.72rem; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text); }
@media (max-width: 600px) { .level-list { grid-template-columns: 1fr; } }

/* Guides index */

.guide-list { background: #000; padding-bottom: var(--space); }
.guide-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(16px, 2.4vw, 32px); }
.guide-card {
  display: flex; flex-direction: column; min-height: 320px; padding: 32px 28px;
  background: var(--bg); border-top: 1px solid var(--line-strong);
  text-decoration: none; color: var(--text); transition: background .3s, border-color .3s;
}
.guide-card:hover { background: var(--surface, #20252b); border-top-color: var(--text); }
.guide-card .pair-role { margin-top: 0; }
.guide-card h2 { font-size: clamp(1.6rem, 2.4vw, 2.1rem); margin: 18px 0 14px; }
.guide-card p { color: var(--muted); font-size: 1rem; }
.guide-card .more { margin-top: auto; padding-top: 24px; }
.guide-card:hover .more { gap: 16px; color: var(--text); }
@media (max-width: 900px) { .guide-cards { grid-template-columns: 1fr; } .guide-card { min-height: 0; } }

/* SPL calculator */

.calc { background: var(--bg-deep); padding: clamp(56px, 7vw, 96px) 0; }
.calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 6vw, 96px); align-items: start; }
@media (max-width: 860px) { .calc-grid { grid-template-columns: 1fr; } }
.calc-form { display: grid; grid-template-columns: 1fr 1fr; gap: 28px 24px; }
@media (max-width: 480px) { .calc-form { grid-template-columns: 1fr; } }
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
legend { padding: 0; margin-bottom: 10px; font-family: var(--mono); font-size: 0.68rem; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.seg { display: flex; flex-wrap: wrap; gap: 8px; }
.seg label {
  display: inline-flex; align-items: center; gap: 10px; cursor: pointer;
  padding: 12px 16px; border: 1px solid var(--line-strong);
  font-family: var(--sans); font-size: 0.95rem; letter-spacing: 0; text-transform: none; color: var(--muted);
  transition: border-color .2s, color .2s;
}
.seg input { width: auto; accent-color: var(--text); margin: 0; }
.seg label:has(input:checked) { border-color: var(--text); color: var(--text); }
input[type="number"] { font-family: var(--mono); -moz-appearance: textfield; }

.calc-result { padding: 32px; background: var(--stage); border-top: 2px solid var(--text); }
.calc-spl { margin: 0; font-size: clamp(3.6rem, 8vw, 6rem); font-weight: 500; letter-spacing: -0.05em; line-height: 1; }
.calc-spl small { font-family: var(--mono); font-size: 0.9rem; letter-spacing: 0.04em; color: var(--muted); margin-left: 8px; }
.calc-verdict { margin-top: 1.25rem; color: var(--text); font-size: 1.05rem; line-height: 1.5; min-height: 3em; }
.calc-levels { list-style: none; margin: 1.5rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.calc-levels li { padding-top: 10px; border-top: 1px solid var(--line-strong); color: var(--faint); transition: border-color .3s, color .3s; }
.calc-levels li.met { border-top: 2px solid var(--text); padding-top: 9px; color: var(--text); }
.cl-name { display: block; font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase; }
.cl-db { display: block; margin-top: 4px; font-family: var(--mono); font-size: 0.9rem; }
.calc-work { margin-top: 1.5rem; font-family: var(--mono); font-size: 0.78rem; color: var(--faint); }
.check label { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; cursor: pointer; font-family: var(--sans); font-size: 0.98rem; letter-spacing: 0; text-transform: none; color: var(--muted); }
.check input { width: auto; margin: 0; accent-color: var(--text); }
.check .opt { font-family: var(--mono); font-size: 0.7rem; }
[hidden] { display: none !important; }
.calc-note { margin-top: 0.75rem; padding-top: 0.75rem; border-top: 1px solid var(--line); font-size: 0.88rem; line-height: 1.5; color: var(--muted); }
.calc-note:empty { display: none; }
.story-cols-2x2 { grid-template-columns: 1fr 1fr; row-gap: clamp(48px, 6vw, 80px); }
@media (max-width: 900px) { .story-cols-2x2 { grid-template-columns: 1fr; } }

/* Thank-you and 404 pages */
.status-page { min-height: 78vh; display: flex; align-items: center; }
.status-links { display: flex; flex-wrap: wrap; gap: 12px 36px; margin-top: 2.75rem; }
.status-links .more { margin-top: 0; color: var(--text); }