/* ==========================================================================
   SoliteGlass.com — standalone site

   BRAND COLOR: change --blue below and the whole site updates.
   BRAND FONTS: change the two --f-* values below and the <link> in each HTML file.
   ========================================================================== */

:root {
  /* ---- the two brand values ---- */
  --blue:       #0B4F8F;   /* primary brand blue */
  --blue-dk:    #083A6B;   /* hover / darker */
  --blue-lt:    #2E82C9;   /* accents on dark backgrounds */
  --blue-pale:  #EAF1F8;   /* tinted panels */

  --paper:      #FFFFFF;
  --mist:       #F4F7FA;
  --ink:        #1B242E;
  --slate:      #5A6675;
  --rule:       #DBE3EB;
  --dark:       #10202F;
  --dark-2:     #1A2E42;
  --dark-rule:  #2C4459;

  --wrap: 1140px;
  --gut: 28px;

  --f-display: "Montserrat", "Helvetica Neue", Arial, sans-serif;
  --f-body: "Open Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--f-body); font-size: 16.5px; line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--blue); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--blue-dk); }

:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 2px; }

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

.skip { position: absolute; left: -9999px; top: 0; z-index: 100; background: var(--ink); color: #fff; padding: 12px 18px; font-size: 14px; }
.skip:focus { left: 8px; top: 8px; }

/* ---------- Type ---------- */

h1, h2, h3, h4 { font-family: var(--f-display); font-weight: 700; letter-spacing: -0.015em; line-height: 1.18; margin: 0 0 .5em; text-wrap: balance; }
h1 { font-size: clamp(2.1rem, 4.6vw, 3.15rem); line-height: 1.12; }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); }
h3 { font-size: 1.16rem; }

p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

.eyebrow {
  font-family: var(--f-display); font-size: 12px; font-weight: 700;
  letter-spacing: .15em; text-transform: uppercase; color: var(--blue); margin: 0 0 16px;
}
.eyebrow.on-dark { color: var(--blue-lt); }

.lede { font-size: 1.13rem; line-height: 1.65; color: var(--slate); max-width: 62ch; }
.lede strong { color: var(--ink); font-weight: 600; }

.note { font-size: 14px; line-height: 1.7; color: var(--slate); }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: var(--f-display); font-weight: 700; font-size: 14px; letter-spacing: .04em; text-transform: uppercase;
  padding: 15px 28px; border-radius: 3px; border: 2px solid transparent;
  text-decoration: none; cursor: pointer;
  transition: background .16s ease, color .16s ease, border-color .16s ease;
}
.btn--primary { background: var(--blue); color: #fff; border-color: var(--blue); }
.btn--primary:hover { background: var(--blue-dk); border-color: var(--blue-dk); color: #fff; }
.btn--ghost { border-color: var(--blue); color: var(--blue); background: transparent; }
.btn--ghost:hover { background: var(--blue); color: #fff; }
.btn--onDark { border-color: rgba(255,255,255,.55); color: #fff; }
.btn--onDark:hover { background: #fff; color: var(--dark); border-color: #fff; }

/* ---------- Header ---------- */

.topbar { background: var(--dark); color: #A9BACA; font-size: 13.5px; }
.topbar__in { display: flex; align-items: center; justify-content: flex-end; gap: 22px; height: 40px; }
.topbar a { color: #DCE6EF; text-decoration: none; }
.topbar a:hover { color: #fff; }
.topbar strong { color: #fff; font-weight: 600; }
@media (max-width: 620px) { .topbar__in { justify-content: center; gap: 16px; font-size: 12.5px; } .topbar__hide { display: none; } }

.hdr { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.96); backdrop-filter: saturate(150%) blur(10px); border-bottom: 1px solid var(--rule); }
.hdr__in { display: flex; align-items: center; gap: 26px; height: 74px; }

.brand { display: flex; flex-direction: column; text-decoration: none; color: var(--ink); line-height: 1; }
.brand__name { font-family: var(--f-display); font-weight: 800; font-size: 26px; letter-spacing: .01em; color: var(--blue); }
.brand__sub { font-family: var(--f-display); font-size: 9.5px; font-weight: 600; letter-spacing: .22em; text-transform: uppercase; color: var(--slate); margin-top: 5px; }

.nav { display: flex; gap: 26px; margin-left: auto; }
.nav a { font-family: var(--f-display); font-size: 13px; font-weight: 600; letter-spacing: .03em; color: var(--ink); text-decoration: none; padding: 4px 0; border-bottom: 2px solid transparent; }
.nav a:hover { color: var(--blue); border-bottom-color: var(--blue); }

.hdr__cta { display: flex; align-items: center; }
.hdr .btn { padding: 12px 20px; font-size: 12.5px; }
@media (max-width: 1010px) { .nav { display: none; } .hdr__cta { margin-left: auto; } }

/* ---------- Sections ---------- */

.sec { padding: 88px 0; }
.sec--mist { background: var(--mist); }
.sec--dark { background: var(--dark); color: #B7C6D3; }
.sec--dark h2, .sec--dark h3 { color: #fff; }
.sec--dark .lede { color: #9FB2C2; }
.sec--dark .lede strong { color: #fff; }
.sec__head { max-width: 68ch; margin-bottom: 44px; }
@media (max-width: 700px) { .sec { padding: 60px 0; } }

/* ---------- Hero ---------- */

.hero { position: relative; overflow: hidden; padding: 76px 0 84px; background: linear-gradient(180deg, var(--blue-pale) 0%, var(--paper) 100%); }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(circle at center, rgba(11,79,143,.13) 0.7px, transparent 0.8px);
  background-size: 7px 7px;
  -webkit-mask-image: radial-gradient(ellipse 68% 60% at 74% 40%, #000 0%, transparent 72%);
  mask-image: radial-gradient(ellipse 68% 60% at 74% 40%, #000 0%, transparent 72%);
  pointer-events: none;
}
.hero__grid { position: relative; display: grid; grid-template-columns: 1.06fr .94fr; gap: 58px; align-items: center; }
.hero h1 { margin-bottom: 20px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 26px; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0; list-style: none; }
.chips li {
  font-family: var(--f-display); font-size: 11.5px; font-weight: 600; letter-spacing: .07em; text-transform: uppercase;
  color: var(--blue); border: 1px solid #C4D6E7; background: #fff; padding: 8px 12px; border-radius: 3px;
}

.plinth { position: relative; margin: 0; border-radius: 4px; overflow: hidden; background: var(--dark); padding: 0 0 18px; box-shadow: 0 20px 50px -20px rgba(16,32,47,.45); }
.plinth img { position: relative; z-index: 1; width: 100%; }
.plinth figcaption { position: relative; z-index: 2; font-family: var(--f-display); font-size: 10.5px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: #8FA3B5; text-align: center; margin-top: 16px; padding: 0 16px; }

@media (max-width: 940px) { .hero__grid { grid-template-columns: 1fr; gap: 40px; } .hero { padding: 52px 0 62px; } }

/* ---------- Columns / cards ---------- */

.cols { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: start; }
@media (max-width: 860px) { .cols { grid-template-columns: 1fr; gap: 36px; } }

.card { background: #fff; border: 1px solid var(--rule); border-top: 3px solid var(--blue); border-radius: 3px; padding: 28px 30px; }
.card h3 { margin-bottom: 14px; }

.ticks { list-style: none; margin: 0; padding: 0; }
.ticks li { position: relative; padding-left: 24px; margin-bottom: 12px; }
.ticks li:last-child { margin-bottom: 0; }
.ticks li::before { content: ""; position: absolute; left: 0; top: .62em; width: 11px; height: 2px; background: var(--blue); }
.ticks--x li::before { background: #9FB0C0; }

/* ---------- Spec table ---------- */

.spec { width: 100%; border-collapse: collapse; background: #fff; }
.spec caption { text-align: left; font-family: var(--f-display); font-size: 11.5px; font-weight: 700; letter-spacing: .15em; text-transform: uppercase; color: var(--slate); padding-bottom: 14px; }
.spec th, .spec td { text-align: left; padding: 14px 14px; border-bottom: 1px solid var(--rule); vertical-align: top; }
.spec th { font-family: var(--f-display); font-weight: 600; font-size: 13px; color: var(--ink); width: 38%; background: var(--mist); }
.spec td { font-size: 16px; color: var(--slate); }
.spec tr:first-child th, .spec tr:first-child td { border-top: 3px solid var(--blue); }
@media (max-width: 620px) {
  .spec th, .spec td { display: block; width: 100%; border-bottom: 0; }
  .spec th { padding: 12px 14px 8px; }
  .spec td { padding: 0 14px 14px; border-bottom: 1px solid var(--rule); }
  .spec tr:first-child td { border-top: 0; }
}

/* ---------- Diffusion comparison ---------- */

.scale { display: flex; align-items: center; gap: 14px; font-family: var(--f-display); font-size: 11px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; color: #7E92A5; margin-bottom: 28px; }
.scale__bar { flex: 1; height: 3px; border-radius: 2px; background: linear-gradient(90deg, #EEF4FA 0%, #7FA3C2 55%, #2C4459 100%); }

.beams { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 900px) { .beams { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 500px) { .beams { grid-template-columns: 1fr; } }

.beam { background: var(--dark-2); border: 1px solid var(--dark-rule); border-radius: 4px; overflow: hidden; transition: border-color .18s ease; }
.beam:hover { border-color: #45637E; }
.beam--hero { border-color: var(--blue-lt); box-shadow: 0 0 0 1px var(--blue-lt) inset; }
.beam__img { position: relative; }
.beam__img img { width: 100%; height: auto; display: block; }
.beam__img img.beam__tex {
  position: absolute; right: 10px; bottom: 10px; width: 50px; height: 50px; min-width: 50px;
  border-radius: 50%; border: 2px solid rgba(255,255,255,.9); object-fit: cover;
  box-shadow: 0 3px 12px rgba(0,0,0,.55); background: #fff;
}
.beam__body { padding: 16px 17px 19px; }
.beam__name { font-family: var(--f-display); font-weight: 700; font-size: 15.5px; color: #fff; margin: 0 0 5px; }
.beam__meta { font-family: var(--f-display); font-size: 10.5px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: #7A8FA3; margin: 0 0 9px; }
.beam--hero .beam__meta { color: var(--blue-lt); }
.beam__desc { font-size: 13.5px; line-height: 1.6; color: #9BAEBF; margin: 0; }

/* ---------- Applications ---------- */

.apps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.apps > div { background: #fff; padding: 26px 24px; }
.apps h3 { font-size: 1.02rem; margin-bottom: 9px; }
.apps p { font-size: 14.5px; color: var(--slate); margin: 0; line-height: 1.62; }
.apps__n { font-family: var(--f-display); font-size: 11px; font-weight: 700; color: var(--blue); letter-spacing: .12em; display: block; margin-bottom: 12px; }
@media (max-width: 860px) { .apps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .apps { grid-template-columns: 1fr; } }

/* ---------- Form ---------- */

.form-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 56px; align-items: start; }
@media (max-width: 880px) { .form-grid { grid-template-columns: 1fr; gap: 34px; } }

.formcard { background: #fff; border: 1px solid var(--rule); border-top: 4px solid var(--blue); border-radius: 4px; padding: 32px 32px 34px; }
@media (max-width: 520px) { .formcard { padding: 24px 20px 26px; } }

.field { margin-bottom: 19px; }
.field label, .fieldset legend { display: block; font-family: var(--f-display); font-size: 12px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; color: var(--ink); margin-bottom: 7px; padding: 0; }
.field .opt { color: var(--slate); text-transform: none; letter-spacing: 0; font-size: 12.5px; font-weight: 400; }

.field input[type=text], .field input[type=email], .field input[type=tel], .field select, .field textarea {
  width: 100%; font-family: var(--f-body); font-size: 16px; color: var(--ink);
  background: var(--mist); border: 1px solid var(--rule); border-radius: 3px; padding: 12px 13px;
  transition: border-color .15s ease, background .15s ease;
}
.field textarea { min-height: 112px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--blue); background: #fff; outline: none; }

.fieldset { border: 0; padding: 0; margin: 0 0 19px; }
.checks { display: grid; grid-template-columns: repeat(2, 1fr); gap: 9px; }
@media (max-width: 560px) { .checks { grid-template-columns: 1fr; } }
.checks label { display: flex; align-items: flex-start; gap: 9px; font-family: var(--f-body); font-size: 14.5px; font-weight: 400; text-transform: none; letter-spacing: 0; color: var(--ink); margin: 0; border: 1px solid var(--rule); border-radius: 3px; padding: 11px 13px; cursor: pointer; background: var(--mist); }
.checks label:hover { border-color: var(--blue); }
.checks input { margin-top: 3px; accent-color: var(--blue); }

.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 560px) { .row2 { grid-template-columns: 1fr; } }

.hp { position: absolute; left: -9999px; }
.form-note { font-size: 13px; color: var(--slate); margin-top: 14px; line-height: 1.65; }

.success { display: none; border: 1px solid var(--rule); border-top: 4px solid var(--blue); background: #fff; padding: 30px 32px; border-radius: 4px; }
.success.is-on { display: block; }
.success h3 { margin-bottom: 8px; }
.is-hidden { display: none !important; }

.rail dt { font-family: var(--f-display); font-size: 11.5px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--slate); margin-bottom: 5px; }
.rail dd { margin: 0 0 20px; font-size: 16px; }
.rail dd a { color: var(--ink); text-decoration: none; font-weight: 600; }
.rail dd a:hover { color: var(--blue); }
.rail .big { font-family: var(--f-display); font-size: 25px; font-weight: 700; color: var(--blue); letter-spacing: -0.01em; }

/* ---------- FAQ ---------- */

.faq { border-top: 2px solid var(--blue); }
.faq details { border-bottom: 1px solid var(--rule); }
.faq summary { cursor: pointer; list-style: none; padding: 20px 44px 20px 0; position: relative; font-family: var(--f-display); font-weight: 600; font-size: 1.04rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 8px; top: 16px; font-size: 22px; font-weight: 400; color: var(--blue); }
.faq details[open] summary::after { content: "\2013"; }
.faq summary:hover { color: var(--blue); }
.faq__a { padding: 0 44px 22px 0; color: var(--slate); max-width: 74ch; }

/* ---------- Footer ---------- */

.ftr { background: var(--dark); color: #93A7B8; padding: 54px 0 30px; font-size: 14.5px; }
.ftr a { color: #CFDCE7; text-decoration: none; }
.ftr a:hover { color: #fff; text-decoration: underline; }
.ftr__top { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px; padding-bottom: 32px; border-bottom: 1px solid var(--dark-rule); }
@media (max-width: 760px) { .ftr__top { grid-template-columns: 1fr; gap: 28px; } }
.ftr h4 { font-family: var(--f-display); font-weight: 700; font-size: 11.5px; letter-spacing: .16em; text-transform: uppercase; color: #fff; margin-bottom: 14px; }
.ftr ul { list-style: none; margin: 0; padding: 0; }
.ftr li { margin-bottom: 9px; }
.ftr .brand__name { color: #fff; font-size: 26px; }
.ftr .brand__sub { color: #7A8FA3; }
.ftr__legal { padding-top: 24px; font-size: 12.5px; line-height: 1.8; color: #718799; }

/* ---------- Market comparison table ---------- */
.cmp-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.cmp { width: 100%; min-width: 720px; border-collapse: collapse; background: #fff; font-size: 15px; }
.cmp th, .cmp td { text-align: left; padding: 15px 16px; border-bottom: 1px solid var(--rule); vertical-align: top; }
.cmp thead th {
  font-family: var(--f-display); font-size: 11.5px; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: #fff; background: var(--blue); border-bottom: 0;
}
.cmp tbody th { font-family: var(--f-display); font-weight: 700; font-size: 15px; color: var(--ink); width: 22%; }
.cmp td { color: var(--slate); line-height: 1.6; }
.cmp tr.is-ours th, .cmp tr.is-ours td { background: var(--blue-pale); color: var(--ink); }
.cmp tr.is-ours th { box-shadow: inset 3px 0 0 var(--blue); }
.cmp__note { font-size: 13px; color: var(--slate); margin-top: 14px; }
.cmp__scroll { display: none; font-size: 12.5px; color: var(--slate); margin-bottom: 10px; }
@media (max-width: 780px) { .cmp__scroll { display: block; } }

/* keep the header on one line at narrow widths */
.hdr .btn, .brand__sub { white-space: nowrap; }
@media (max-width: 430px) {
  .hdr__in { gap: 12px; height: 66px; }
  .brand__name { font-size: 22px; }
  .brand__sub { font-size: 8.5px; letter-spacing: .16em; }
  .hdr .btn { padding: 11px 14px; font-size: 11.5px; }
}

@media (max-width: 360px) {
  .hdr .btn { padding: 10px 11px; font-size: 10.5px; letter-spacing: .02em; }
  .brand__sub { font-size: 8px; }
  .cmp { min-width: 640px; }
}

/* ==========================================================================
   Blog / article pages
   ========================================================================== */

.crumb { font-size: 13px; color: var(--slate); margin-bottom: 18px; }
.crumb a { color: var(--slate); text-decoration: none; }
.crumb a:hover { color: var(--blue); text-decoration: underline; }

.art-head { background: var(--blue-pale); padding: 52px 0 46px; border-bottom: 1px solid var(--rule); }
.art-head h1 { max-width: 26ch; font-size: clamp(1.9rem, 3.8vw, 2.75rem); margin-bottom: 18px; }
.art-head .lede { max-width: 60ch; }
.art-meta { font-family: var(--f-display); font-size: 12px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--slate); margin-top: 22px; }

.article { padding: 50px 0 66px; }
.article__body { max-width: 74ch; }
.article__body > p:first-of-type { font-size: 1.13rem; line-height: 1.7; }
.article__body h2 { margin: 52px 0 18px; padding-top: 4px; border-top: 2px solid var(--blue); }
.article__body h2:first-child { margin-top: 0; }
.article__body h3 { margin: 34px 0 12px; color: var(--blue); }
.article__body p { margin: 0 0 1.15em; }
.article__body ul, .article__body ol { margin: 0 0 1.3em; padding-left: 22px; }
.article__body li { margin-bottom: .55em; }
.article__body li::marker { color: var(--blue); }
.article__body strong { color: var(--ink); font-weight: 600; }
.article__body hr { border: 0; border-top: 1px solid var(--rule); margin: 44px 0; }
.article__body blockquote { margin: 0 0 1.3em; padding: 16px 20px; background: var(--mist); border-left: 3px solid var(--blue); }

.article__body table { width: 100%; border-collapse: collapse; margin: 0 0 1.6em; font-size: 15px; background: #fff; }
.article__body thead th {
  font-family: var(--f-display); font-size: 11.5px; font-weight: 700; letter-spacing: .09em;
  text-transform: uppercase; color: #fff; background: var(--blue); text-align: left; padding: 13px 14px;
}
.article__body tbody td { padding: 13px 14px; border-bottom: 1px solid var(--rule); vertical-align: top; color: var(--slate); line-height: 1.6; }
.article__body tbody td:first-child { color: var(--ink); }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; margin-bottom: 1.6em; }
.table-scroll table { min-width: 620px; margin-bottom: 0; }

.art-cta { background: var(--dark); color: #B7C6D3; padding: 46px 0; margin-top: 8px; }
.art-cta h2 { color: #fff; margin-bottom: 12px; }
.art-cta .inner { max-width: 74ch; }
.art-cta__row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }

/* blog index */
.posts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
@media (max-width: 760px) { .posts { grid-template-columns: 1fr; } }
.post-card { display: block; background: #fff; border: 1px solid var(--rule); border-top: 3px solid var(--blue); border-radius: 3px; padding: 28px 28px 30px; text-decoration: none; color: var(--ink); transition: box-shadow .18s ease, transform .18s ease; }
.post-card:hover { box-shadow: 0 12px 30px -14px rgba(16,32,47,.35); transform: translateY(-2px); color: var(--ink); }
.post-card h3 { font-size: 1.22rem; margin-bottom: 10px; }
.post-card p { color: var(--slate); font-size: 15px; margin: 0; line-height: 1.62; }
.post-card__tag { font-family: var(--f-display); font-size: 11px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--blue); display: block; margin-bottom: 12px; }
.post-card__more { font-family: var(--f-display); font-weight: 700; font-size: 13px; color: var(--blue); margin-top: 16px; display: inline-block; }