/* Sliding Doors Uckfield. Layout A13: dark full-width band, image inset beneath. */
:root {
  --sdu-black: #111111;
  --sdu-anth: #3A3F44;
  --sdu-lime: #B5D334;
  --sdu-white: #FFFFFF;
  --sdu-mist: #F2F3F1;
  --sdu-line: #D9DCD6;
  --sdu-text: #1d2023;
  --sdu-head: 'Manrope', system-ui, sans-serif;
  --sdu-copy: 'IBM Plex Sans', system-ui, sans-serif;
  --sdu-max: 1120px;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--sdu-white); color: var(--sdu-text); font: 400 1.0625rem/1.65 var(--sdu-copy); overflow-x: hidden; padding-bottom: 56px; }
@media (min-width: 900px) { body { padding-bottom: 0; } }
img { max-width: 100%; height: auto; display: block; }
a { color: #2f5a00; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--sdu-black); }
h1, h2, h3 { font-family: var(--sdu-head); line-height: 1.15; color: var(--sdu-black); letter-spacing: -0.01em; }
h2 { font-size: 1.6rem; margin: 2.2rem 0 0.7rem; }
h3 { font-size: 1.2rem; margin: 0.4rem 0 0.6rem; }
code { font-size: 0.95em; background: var(--sdu-mist); padding: 0 4px; }
.sdu-skip { position: absolute; left: -999px; top: 0; background: var(--sdu-lime); color: var(--sdu-black); padding: 8px 12px; z-index: 100; }
.sdu-skip:focus { left: 8px; }

/* header */
.sdu-top { background: var(--sdu-black); color: var(--sdu-white); position: relative; z-index: 20; border-bottom: 1px solid #262a2e; }
.sdu-top__in { max-width: var(--sdu-max); margin: 0 auto; padding: 14px 16px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.sdu-logo { color: var(--sdu-white); text-decoration: none; font: 700 1.1rem/1 var(--sdu-head); display: flex; align-items: center; gap: 10px; }
.sdu-logo b { color: var(--sdu-lime); font-weight: 800; }
.sdu-logo__mark { width: 26px; height: 18px; border: 2px solid var(--sdu-lime); position: relative; }
.sdu-logo__mark::after { content: ""; position: absolute; top: 0; bottom: 0; left: 50%; width: 2px; background: var(--sdu-lime); }
.sdu-burger { display: none; margin-left: auto; background: transparent; color: var(--sdu-white); border: 1px solid #555; padding: 7px 12px; font: 500 0.95rem var(--sdu-copy); cursor: pointer; }
.sdu-nav { flex-basis: 100%; display: block; }
.sdu-js .sdu-burger { display: inline-block; }
.sdu-js .sdu-nav { display: none; }
.sdu-js .sdu-nav--open { display: block; }
.sdu-nav ul { list-style: none; margin: 0; padding: 6px 0; }
.sdu-nav a { display: block; color: #e8e8e8; text-decoration: none; padding: 9px 0; border-top: 1px solid #23272b; font-size: 0.98rem; }
.sdu-nav a[aria-current="page"], .sdu-nav a:hover { color: var(--sdu-lime); }
.sdu-top__tel { display: none; color: var(--sdu-black); background: var(--sdu-lime); text-decoration: none; font: 700 0.98rem var(--sdu-head); padding: 9px 14px; }
@media (min-width: 900px) {
  .sdu-js .sdu-burger, .sdu-burger { display: none; }
  .sdu-js .sdu-nav, .sdu-nav { display: block; flex-basis: auto; margin-left: auto; }
  .sdu-nav ul { display: flex; gap: 20px; padding: 0; }
  .sdu-nav a { border: 0; padding: 4px 0; }
  .sdu-top__tel { display: inline-block; }
}

/* dark band hero */
.sdu-band { background: var(--sdu-black); color: #f1f1f1; padding: 56px 0 140px; }
.sdu-band--short { padding: 40px 0 44px; }
.sdu-band__in { max-width: var(--sdu-max); margin: 0 auto; padding: 0 16px; }
.sdu-band h1 { color: var(--sdu-white); font-size: clamp(2rem, 5.6vw, 3.6rem); font-weight: 800; max-width: 17em; margin: 0.3rem 0 1rem; }
.sdu-band--short h1 { font-size: clamp(1.7rem, 4.4vw, 2.7rem); max-width: 22em; margin: 0; }
.sdu-band--short h1::after { content: ""; display: block; width: 72px; height: 4px; background: var(--sdu-lime); margin-top: 18px; }
.sdu-kicker { color: var(--sdu-lime); font: 600 0.85rem var(--sdu-copy); text-transform: uppercase; letter-spacing: 0.08em; margin: 0; }
.sdu-lede { max-width: 40em; font-size: 1.15rem; color: #cfd2d4; }
.sdu-band__btns { margin-top: 1.6rem; display: flex; flex-wrap: wrap; gap: 12px; }
.sdu-inset { max-width: var(--sdu-max); margin: -110px auto 0; padding: 0 16px; position: relative; }
.sdu-inset__pic { margin: 0; border: 6px solid var(--sdu-white); box-shadow: 0 18px 40px rgba(0,0,0,0.22); }

/* buttons */
.sdu-btn { display: inline-block; background: var(--sdu-lime); color: var(--sdu-black); font: 700 1rem var(--sdu-head); padding: 13px 22px; text-decoration: none; border: 2px solid var(--sdu-lime); cursor: pointer; }
.sdu-btn:hover { background: var(--sdu-white); color: var(--sdu-black); }
.sdu-btn--line { background: transparent; color: var(--sdu-white); border-color: #6b7177; }
.sdu-btn--ghost { background: transparent; border-color: var(--sdu-anth); color: var(--sdu-black); }

/* body */
.sdu-body { max-width: var(--sdu-max); margin: 0 auto; padding: 24px 16px 56px; }
.sdu-intro { font-size: 1.2rem; color: var(--sdu-anth); max-width: 44em; }
.sdu-body > p, .sdu-body > ul, .sdu-body > ol, .sdu-body > h2 { max-width: 46em; }
.sdu-pic { margin: 1.6rem 0; }
.sdu-sec { margin: 2.6rem 0; }
.sdu-split { display: grid; gap: 28px; }
@media (min-width: 860px) { .sdu-split { grid-template-columns: 1fr 1fr; gap: 48px; } .sdu-split--form { grid-template-columns: 1.1fr 0.9fr; } }
.sdu-dark { background: var(--sdu-anth); color: #eef0f1; padding: 28px 22px; }
.sdu-dark h2 { color: var(--sdu-white); margin-top: 0; }
.sdu-dark a { color: var(--sdu-lime); }
.sdu-ticks { padding: 0; list-style: none; }
.sdu-ticks li { position: relative; padding-left: 26px; margin: 0.5rem 0; }
.sdu-ticks li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 12px; height: 6px; border-left: 2px solid #5c7a00; border-bottom: 2px solid #5c7a00; transform: rotate(-45deg); }
.sdu-ticks--light li::before { border-color: var(--sdu-lime); }
.sdu-steps li { margin: 0.6rem 0; }

.sdu-grid4, .sdu-hub { display: grid; gap: 14px; }
@media (min-width: 640px) { .sdu-grid4, .sdu-hub { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) { .sdu-grid4 { grid-template-columns: repeat(4, 1fr); } }
.sdu-tile { display: flex; flex-direction: column; gap: 6px; padding: 20px; border: 1px solid var(--sdu-line); text-decoration: none; color: var(--sdu-text); border-top: 4px solid var(--sdu-black); }
.sdu-tile:hover { border-top-color: var(--sdu-lime); }
.sdu-tile b { font: 700 1.1rem var(--sdu-head); color: var(--sdu-black); }
.sdu-tile__n { font: 800 0.85rem var(--sdu-head); color: #5c7a00; }
.sdu-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.sdu-chips a { border: 1px solid var(--sdu-anth); padding: 6px 12px; text-decoration: none; color: var(--sdu-black); }
.sdu-chips a:hover { background: var(--sdu-black); color: var(--sdu-lime); }

/* case studies */
.sdu-case { display: grid; gap: 18px; border: 1px solid var(--sdu-line); margin: 1.6rem 0; background: var(--sdu-white); }
.sdu-case__pic { margin: 0; }
.sdu-case__text { padding: 0 18px 18px; }
@media (min-width: 820px) { .sdu-case { grid-template-columns: 0.9fr 1.1fr; } .sdu-case__text { padding: 20px 22px 20px 0; } .sdu-case__pic img { height: 100%; object-fit: cover; } }
.sdu-case__tag { display: inline-block; background: var(--sdu-black); color: var(--sdu-lime); font: 600 0.78rem var(--sdu-copy); text-transform: uppercase; letter-spacing: 0.06em; padding: 3px 8px; margin: 0; }
.sdu-case__price { font: 700 1.15rem var(--sdu-head); color: var(--sdu-black); border-left: 4px solid var(--sdu-lime); padding-left: 10px; }
.sdu-case h2 { font-size: 1.3rem; margin: 0.6rem 0; }

/* compare table */
.sdu-compare { width: 100%; border-collapse: collapse; margin: 1.4rem 0; font-size: 0.98rem; }
.sdu-compare caption { text-align: left; font: 700 1rem var(--sdu-head); margin-bottom: 8px; }
.sdu-compare th, .sdu-compare td { border-bottom: 1px solid var(--sdu-line); padding: 10px 8px; text-align: left; vertical-align: top; }
.sdu-compare thead th { background: var(--sdu-black); color: var(--sdu-white); font-family: var(--sdu-head); }
@media (max-width: 560px) { .sdu-compare { font-size: 0.9rem; } .sdu-compare th, .sdu-compare td { padding: 8px 4px; } }

/* FAQ */
.sdu-q { border-bottom: 1px solid var(--sdu-line); padding: 14px 0; max-width: 48em; }
.sdu-q summary { font: 700 1.08rem var(--sdu-head); cursor: pointer; color: var(--sdu-black); }
.sdu-q p { margin: 0.6rem 0 0; }

/* CTA */
.sdu-cta { background: var(--sdu-black); color: #e9e9e9; padding: 26px 22px; margin: 2.8rem 0 0; border-left: 6px solid var(--sdu-lime); }
.sdu-cta p { margin: 0 0 12px; max-width: 46em; }
.sdu-cta .sdu-btn--ghost { color: var(--sdu-white); border-color: #6b7177; }
.sdu-cta__btns { display: flex; flex-wrap: wrap; gap: 10px; margin: 0; }

/* form */
.sdu-form { display: grid; gap: 6px; max-width: 34em; }
.sdu-form label { font-weight: 600; margin-top: 10px; }
.sdu-form input, .sdu-form select, .sdu-form textarea { font: inherit; padding: 11px 12px; border: 1px solid #9aa0a5; background: var(--sdu-white); width: 100%; }
.sdu-form input:focus, .sdu-form select:focus, .sdu-form textarea:focus { outline: 3px solid var(--sdu-lime); outline-offset: 0; border-color: var(--sdu-black); }
.sdu-form .sdu-btn { margin-top: 16px; justify-self: start; }
.sdu-form__err { color: #a01818; font-weight: 600; min-height: 1.2em; }
.sdu-hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.sdu-small { font-size: 0.9rem; color: #555; }

/* footer */
.sdu-foot { background: var(--sdu-black); color: #c7cacc; font-size: 0.95rem; }
.sdu-foot__in { max-width: var(--sdu-max); margin: 0 auto; padding: 40px 16px; display: grid; gap: 24px; }
@media (min-width: 760px) { .sdu-foot__in { grid-template-columns: 1.4fr 1fr 1fr 1fr; } }
.sdu-foot a { color: #e9eaeb; }
.sdu-foot a:hover { color: var(--sdu-lime); }
.sdu-foot__name { font: 800 1.1rem var(--sdu-head); color: var(--sdu-white); margin-top: 0; }
.sdu-foot__head { font: 700 0.85rem var(--sdu-copy); text-transform: uppercase; letter-spacing: 0.08em; color: var(--sdu-lime); margin-top: 0; }
.sdu-foot__areas a { display: inline-block; margin: 0 10px 4px 0; }

/* mobile call bar */
.sdu-callbar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 30; background: var(--sdu-lime); color: var(--sdu-black); text-align: center; font: 800 1.05rem var(--sdu-head); padding: 15px 16px; text-decoration: none; }
@media (min-width: 900px) { .sdu-callbar { display: none; } }

/* cookie banner */
.sdu-consent { position: fixed; z-index: 50; left: 12px; right: 12px; bottom: 66px; max-width: 520px; background: var(--sdu-anth); color: var(--sdu-white); padding: 18px; box-shadow: 0 10px 30px rgba(0,0,0,0.35); }
@media (min-width: 900px) { .sdu-consent { bottom: 20px; left: 20px; } }
.sdu-consent p { margin: 0 0 12px; font-size: 0.95rem; }
.sdu-consent a { color: var(--sdu-lime); }
.sdu-consent__row { display: flex; gap: 10px; }
.sdu-consent__btn { flex: 1; font: 700 1rem var(--sdu-head); padding: 11px 0; background: var(--sdu-white); color: var(--sdu-black); border: 2px solid var(--sdu-white); cursor: pointer; }
.sdu-consent__btn:hover { background: var(--sdu-lime); border-color: var(--sdu-lime); }