/* ==========================================================================
   JINYE — Steel Strip Processing Equipment
   Precision-industrial theme: hairline rules, sharp edges, monospace labels,
   molten-orange accent harmonized with the JYSCIENCE blue mark.
   ========================================================================== */

:root {
  --paper: #f4f1ea;          /* warm off-white body            */
  --paper-2: #ebe7dd;        /* tint section                   */
  --card: #ffffff;
  --ink: #15191e;            /* near-black text                */
  --ink-soft: #4c545c;       /* muted body text                */
  --ink-faint: #828a91;
  --dark: #0e1418;           /* hero / cta / footer surface    */
  --dark-2: #161e25;
  --accent: #e2571f;         /* molten steel orange            */
  --accent-hot: #f4733a;
  --blue: #1f6fd4;           /* logo-harmonized steel blue     */
  --line: rgba(21, 25, 30, 0.16);
  --line-soft: rgba(21, 25, 30, 0.09);
  --line-dark: rgba(255, 255, 255, 0.14);
  --line-dark-soft: rgba(255, 255, 255, 0.08);
  --shell: 1200px;
  --gutter: 28px;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  --display: "Space Grotesk", "Inter", -apple-system, BlinkMacSystemFont, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p { margin: 0; }

h1, h2, h3 {
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
}

::selection { background: var(--accent); color: #fff; }

.shell {
  width: min(var(--shell), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
}

/* --- Kicker / micro-label ------------------------------------------------- */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}
.kicker::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
}
.kicker--plain::before { display: none; }

/* --- Buttons -------------------------------------------------------------- */
.btn {
  --bg: var(--ink);
  --fg: #fff;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--bg);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.btn::after { content: "\2192"; font-family: var(--sans); font-size: 16px; transition: transform 0.2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn:hover::after { transform: translateX(4px); }
.btn--accent { --bg: var(--accent); --fg: #fff; }
.btn--accent:hover { --bg: var(--accent-hot); }
.btn--ghost {
  --bg: transparent; --fg: var(--ink);
  border-color: var(--line);
}
.btn--ghost:hover { --fg: #fff; background: var(--ink); border-color: var(--ink); }
.btn--on-dark { --bg: transparent; --fg: #fff; border-color: var(--line-dark); }
.btn--on-dark:hover { --bg: #fff; --fg: var(--ink); border-color: #fff; }

/* ==========================================================================
   Masthead
   ========================================================================== */
.masthead {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(244, 241, 234, 0.9);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.masthead__bar {
  width: min(var(--shell), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
  height: 74px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.logo { display: flex; align-items: center; }
.logo img { width: auto; height: 38px; object-fit: contain; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.nav-menu a {
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 8px 12px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.nav-menu a:hover { color: var(--ink); }
.nav-menu a.active { color: var(--ink); border-bottom-color: var(--accent); }

.nav-quote {
  margin-left: 8px;
  padding: 11px 18px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #fff;
  background: var(--ink);
  border: 1px solid var(--ink);
  transition: background 0.2s ease;
}
.nav-quote:hover { background: var(--accent); border-color: var(--accent); }

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 46px;
  height: 42px;
  font-size: 20px;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line);
  cursor: pointer;
}

/* ==========================================================================
   Home hero
   ========================================================================== */
.hero {
  position: relative;
  color: #fff;
  background:
    linear-gradient(90deg, rgba(14, 20, 24, 0.94) 0%, rgba(14, 20, 24, 0.78) 46%, rgba(14, 20, 24, 0.3) 100%),
    url("https://storage.googleapis.com/cg-webase/media/1779521020733-2d10adf1.jpg") center / cover no-repeat;
  border-bottom: 1px solid var(--ink);
}
.hero__inner {
  width: min(var(--shell), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
  padding: 104px 0 88px;
  max-width: 920px;
}
.hero__inner .kicker { color: var(--accent-hot); }
.hero h1 {
  margin-top: 26px;
  font-size: clamp(40px, 6vw, 76px);
  line-height: 1.02;
  font-weight: 600;
}
.hero p {
  max-width: 620px;
  margin-top: 26px;
  font-size: 18px;
  color: rgba(238, 240, 242, 0.82);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }

/* spec rail */
.rail {
  background: var(--dark-2);
  color: #fff;
  border-bottom: 1px solid var(--ink);
}
.rail__grid {
  width: min(var(--shell), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.rail__cell {
  padding: 26px 28px;
  border-left: 1px solid var(--line-dark-soft);
}
.rail__cell:first-child { border-left: 0; padding-left: 0; }
.rail__num {
  font-family: var(--display);
  font-size: 34px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #fff;
}
.rail__num span { color: var(--accent-hot); }
.rail__label {
  display: block;
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(238, 240, 242, 0.6);
}

/* ==========================================================================
   Bands / sections
   ========================================================================== */
.band { padding: 96px 0; }
.band--tint { background: var(--paper-2); border-block: 1px solid var(--line-soft); }
.band--dark {
  background: var(--dark);
  color: #fff;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
}
.band--compact { padding: 64px 0; }

.band-head {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: end;
  padding-bottom: 28px;
  margin-bottom: 48px;
  border-bottom: 1px solid var(--line);
}
.band-head h2 {
  font-size: clamp(28px, 3.4vw, 40px);
  line-height: 1.08;
}
.band-head p { color: var(--ink-soft); font-size: 15.5px; }
.band-head__top .kicker { margin-bottom: 18px; }
.band--dark .band-head { border-color: var(--line-dark); }
.band--dark .band-head p { color: rgba(238, 240, 242, 0.66); }

.band-head--center {
  grid-template-columns: 1fr;
  justify-items: center;
  text-align: center;
  max-width: 760px;
  margin-inline: auto;
}
.band-head--center .kicker { justify-content: center; }

/* ==========================================================================
   Feature grid (numbered capabilities)
   ========================================================================== */
.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.feature {
  padding: 30px 26px 36px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--card);
  transition: background 0.25s ease;
}
.feature:hover { background: var(--paper-2); }
.feature__idx {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent);
}
.feature h3 { margin: 18px 0 12px; font-size: 19px; letter-spacing: -0.01em; }
.feature p { color: var(--ink-soft); font-size: 14.5px; }
.band--dark .feature { background: transparent; border-color: var(--line-dark); }
.band--dark .features { border-color: var(--line-dark); }
.band--dark .feature:hover { background: rgba(255, 255, 255, 0.04); }
.band--dark .feature p { color: rgba(238, 240, 242, 0.66); }
.band--dark .feature__idx { color: var(--accent-hot); }

/* ==========================================================================
   Card grids (products / blog / cases)
   ========================================================================== */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.cards--4 { grid-template-columns: repeat(4, 1fr); }

.tile {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--line);
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.tile:hover { border-color: var(--ink); transform: translateY(-4px); }
.tile__media { position: relative; overflow: hidden; aspect-ratio: 4 / 3; background: var(--paper-2); }
.tile__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.tile:hover .tile__media img { transform: scale(1.05); }
.tile__body { display: flex; flex: 1; flex-direction: column; padding: 22px; }

.tile__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 9px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(226, 87, 31, 0.35);
  background: rgba(226, 87, 31, 0.07);
}
.tile__body h2, .tile__body h3 {
  margin: 16px 0 10px;
  font-size: 19px;
  line-height: 1.25;
  letter-spacing: -0.01em;
}
.tile--product .tile__body h2,
.tile--product .tile__body h3 { min-height: 48px; }
.tile__body p { color: var(--ink-soft); font-size: 14.5px; }
.tile--product .tile__body p { min-height: 84px; }

.price {
  margin-top: auto;
  padding-top: 16px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink);
}
.tile__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
}
.tile__link::after { content: "\2192"; transition: transform 0.2s ease; }
.tile:hover .tile__link::after { transform: translateX(4px); }
.tile--product .price + .tile__link { margin-top: 14px; }

/* ==========================================================================
   Split (media + text)
   ========================================================================== */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.split--media-right .split__media { order: 2; }
.split__media {
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line);
  background-size: cover;
  background-position: center;
}
.split__media--home { background-image: url("https://storage.googleapis.com/cg-webase/media/1779521021250-61e8b1d4.jpg"); }
.split__media--about { background-image: url("https://storage.googleapis.com/cg-webase/media/1779521018838-d651ff93.jpg"); }
.split__body { display: grid; gap: 20px; }
.split__body h2 { font-size: clamp(26px, 3vw, 36px); line-height: 1.1; }
.split__body p { color: var(--ink-soft); }
.split__body .kicker { margin-bottom: 2px; }

.checks { list-style: none; margin: 6px 0 0; padding: 0; display: grid; gap: 14px; }
.checks li {
  position: relative;
  padding-left: 26px;
  color: var(--ink-soft);
  font-size: 15px;
}
.checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 9px;
  height: 9px;
  background: var(--accent);
}

/* ==========================================================================
   Panels grid (about standards / cases workflow)
   ========================================================================== */
.panels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.panels--2col { grid-template-columns: repeat(2, 1fr); }
.panel {
  padding: 32px 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--card);
}
.panel h3 { font-size: 18px; margin-bottom: 12px; letter-spacing: -0.01em; }
.panel p { color: var(--ink-soft); font-size: 14.5px; }

/* ==========================================================================
   CTA band
   ========================================================================== */
.cta {
  background: var(--dark);
  color: #fff;
  border-block: 1px solid var(--ink);
}
.cta__inner {
  width: min(var(--shell), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
  padding: 80px 0;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.cta h2 { font-size: clamp(28px, 3.4vw, 42px); line-height: 1.08; }
.cta p { margin-top: 16px; color: rgba(238, 240, 242, 0.72); max-width: 560px; }
.cta__actions { display: flex; }

/* ==========================================================================
   Page hero (interior pages)
   ========================================================================== */
.phero {
  color: #fff;
  border-bottom: 1px solid var(--ink);
  background:
    linear-gradient(90deg, rgba(14, 20, 24, 0.93) 0%, rgba(14, 20, 24, 0.74) 55%, rgba(14, 20, 24, 0.4) 100%),
    var(--dark);
  background-size: cover;
  background-position: center;
}
.phero--products { background-image: linear-gradient(90deg, rgba(14, 20, 24, 0.93), rgba(14, 20, 24, 0.66)), url("https://storage.googleapis.com/cg-webase/media/1779521021992-e6517cd6.jpg"); }
.phero--blog { background-image: linear-gradient(90deg, rgba(14, 20, 24, 0.93), rgba(14, 20, 24, 0.66)), url("https://storage.googleapis.com/cg-webase/media/1779521019483-d5e44a73.jpg"); }
.phero--cases { background-image: linear-gradient(90deg, rgba(14, 20, 24, 0.93), rgba(14, 20, 24, 0.66)), url("https://storage.googleapis.com/cg-webase/media/1779521020092-c868f02f.jpg"); }
.phero--about { background-image: linear-gradient(90deg, rgba(14, 20, 24, 0.93), rgba(14, 20, 24, 0.66)), url("https://storage.googleapis.com/cg-webase/media/1779521018490-7d8a47e2.jpg"); }
.phero--contact { background-image: linear-gradient(90deg, rgba(14, 20, 24, 0.93), rgba(14, 20, 24, 0.66)), url("https://storage.googleapis.com/cg-webase/media/1779521020275-c52a145e.jpg"); }

.phero__inner {
  width: min(var(--shell), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
  padding: 78px 0 84px;
}
.phero .kicker { color: var(--accent-hot); }
.phero h1 {
  margin-top: 22px;
  max-width: 16ch;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.04;
}
.phero p {
  max-width: 680px;
  margin-top: 22px;
  font-size: 17px;
  color: rgba(238, 240, 242, 0.8);
}

/* ==========================================================================
   Detail / article layout
   ========================================================================== */
.detail {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 56px;
  align-items: start;
}
.detail__main { min-width: 0; }
.detail__hero {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
}
.prose { margin-top: 36px; color: #2c343b; font-size: 16.5px; line-height: 1.75; }
.prose h2 {
  margin: 40px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-size: 24px;
}
.prose h2:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.prose p, .prose ul { margin: 16px 0 0; }
.prose ul { padding-left: 20px; }
.prose li { margin-top: 8px; }

.aside {
  position: sticky;
  top: 98px;
  padding: 28px;
  background: var(--card);
  border: 1px solid var(--line);
}
.aside h2 {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.spec-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.spec-list li {
  padding: 14px 0;
  border-top: 1px solid var(--line-soft);
  font-size: 14.5px;
  color: var(--ink-soft);
}
.spec-list li:first-child { border-top: 0; padding-top: 0; }
.spec-list strong {
  display: block;
  margin-bottom: 3px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ==========================================================================
   Contact
   ========================================================================== */
.contact {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 32px;
  align-items: start;
}
.contact__panel {
  padding: 34px;
  background: var(--card);
  border: 1px solid var(--line);
}
.contact__panel h2 { font-size: 24px; margin-bottom: 14px; }
.contact__panel > p { color: var(--ink-soft); }
.contact-list { list-style: none; margin: 24px 0 0; padding: 0; display: grid; gap: 0; }
.contact-list li {
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
  color: var(--ink);
  font-size: 15px;
}
.contact-list li:first-child { border-top: 0; }
.contact-list strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.form { display: grid; gap: 16px; }
.form--grid { grid-template-columns: 1fr 1fr; }
.field { display: grid; gap: 7px; }
.field--full { grid-column: 1 / -1; }
.field label {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 13px 14px;
  font: inherit;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 0;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
}
.field textarea { min-height: 140px; resize: vertical; }
.form .btn { justify-self: start; }
.form--grid .btn { grid-column: 1 / -1; }

/* form on dark cta */
.cta .form .field label { color: rgba(238, 240, 242, 0.78); }
.cta .form .field input,
.cta .form .field textarea {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--line-dark);
  color: #fff;
}
.cta .form .field input::placeholder,
.cta .form .field textarea::placeholder { color: rgba(238, 240, 242, 0.45); }
.cta .form .field input:focus,
.cta .form .field textarea:focus { border-color: var(--accent-hot); background: rgba(255, 255, 255, 0.1); }

.mapcard {
  display: grid;
  align-content: center;
  gap: 12px;
  min-height: 320px;
  padding: 44px;
  border: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(244, 241, 234, 0.93), rgba(244, 241, 234, 0.6)),
    url("https://storage.googleapis.com/cg-webase/media/1779521020364-ecd96d41.jpg") center / cover no-repeat;
}
.mapcard strong { font-family: var(--display); font-size: 26px; font-weight: 600; letter-spacing: -0.01em; }
.mapcard span { max-width: 460px; color: var(--ink-soft); }

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background: var(--dark);
  color: rgba(238, 240, 242, 0.66);
  border-top: 1px solid var(--ink);
}
.footer__inner {
  width: min(var(--shell), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
  padding: 72px 0 30px;
}
.footer__top {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 0.85fr);
  gap: 48px;
}
.footer__logo {
  display: inline-flex;
  padding: 14px 18px;
  background: #fff;
  border-radius: 2px;
}
.footer__logo img { height: 44px; width: auto; }
.footer__brand p { margin-top: 22px; max-width: 420px; font-size: 14.5px; line-height: 1.7; }
.footer__col h3 {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 18px;
}
.footer__col { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }
.footer__col a, .footer__col span { font-size: 14.5px; color: rgba(238, 240, 242, 0.66); transition: color 0.2s ease; }
.footer__col a:hover { color: var(--accent-hot); }
.footer__bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 56px;
  padding-top: 26px;
  border-top: 1px solid var(--line-dark);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(238, 240, 242, 0.5);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1040px) {
  .cards--4 { grid-template-columns: repeat(2, 1fr); }
  .features { grid-template-columns: repeat(2, 1fr); }
  .detail { grid-template-columns: 1fr; }
  .aside { position: static; }
}

@media (max-width: 880px) {
  .nav-menu, .nav-quote { display: none; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .masthead__bar { gap: 12px; }

  .nav-menu.open {
    display: flex;
    position: absolute;
    left: var(--gutter);
    right: var(--gutter);
    top: 74px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px;
    background: var(--paper);
    border: 1px solid var(--line);
  }
  .nav-menu.open a { padding: 13px 12px; border-bottom: 1px solid var(--line-soft); }
  .nav-menu.open a:last-child { border-bottom: 0; }

  .band-head { grid-template-columns: 1fr; align-items: start; gap: 18px; }
  .band { padding: 72px 0; }
  .split { grid-template-columns: 1fr; gap: 32px; }
  .split--media-right .split__media { order: 0; }
  .cards, .cards--4, .panels, .panels--2col { grid-template-columns: 1fr; }
  .features { grid-template-columns: 1fr; }
  .rail__grid { grid-template-columns: repeat(2, 1fr); }
  .rail__cell:nth-child(odd) { border-left: 0; padding-left: 28px; }
  .rail__cell { border-top: 1px solid var(--line-dark-soft); }
  .rail__cell:nth-child(1), .rail__cell:nth-child(2) { border-top: 0; }
  .contact, .cta__inner, .form--grid { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 520px) {
  :root { --gutter: 18px; }
  .hero__inner { padding: 72px 0 64px; }
  .rail__grid { grid-template-columns: 1fr; }
  .rail__cell { border-left: 0; padding-left: 0; }
  .footer__top { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
}