/* Shanghai No.0 · English site */
:root {
  --blue: #1a6dff;
  --blue-deep: #0e3f9e;
  --cyan: #35d0ff;
  --navy: #081120;
  --ink: #0d1826;
  --muted: #5f6f80;
  --paper: #f4f7fc;
  --line: #dde6f2;
  --mono: ui-monospace, "SF Mono", Consolas, monospace;
  --max: 1200px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--paper) linear-gradient(rgba(26, 109, 255, .035) 1px, transparent 1px),
                        linear-gradient(90deg, rgba(26, 109, 255, .035) 1px, transparent 1px);
  background-size: 56px 56px;
  color: var(--ink);
  font: 16px/1.7 "Inter", "Segoe UI", "Helvetica Neue", Arial, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-deep); }
img { display: block; max-width: 100%; }
.wrap { width: min(var(--max), calc(100% - 48px)); margin-inline: auto; }
h1 { font-size: clamp(30px, 4vw, 46px); line-height: 1.12; margin: 12px 0 16px; letter-spacing: -.01em; }
h2 { font-size: clamp(22px, 2.4vw, 30px); line-height: 1.25; margin: 10px 0 12px; letter-spacing: -.005em; }
p { color: #33465e; }
.sub { color: var(--muted); font-size: 15.5px; max-width: 760px; margin: 0 0 26px; }
.eyebrow { font-family: var(--mono); font-size: 11.5px; letter-spacing: .18em; text-transform: uppercase; color: var(--blue); margin: 0 0 8px; }

/* nav */
.nav { position: sticky; top: 0; z-index: 50; background: rgba(8, 17, 32, .96); border-bottom: 1px solid rgba(53, 208, 255, .18); backdrop-filter: blur(10px); }
.nav .wrap { display: flex; align-items: center; gap: 20px; height: 70px; min-height: 70px; overflow: hidden; }
.brand { display: flex; align-items: center; gap: 12px; color: #fff; }
.brand .logo { height: 36px; width: auto; display: block; flex: none; }
.brand .cname { font-size: 15px; font-weight: 700; letter-spacing: .02em; color: #fff; white-space: nowrap; }
footer .brand .logo { height: 30px; }
.brand .mark { width: 42px; height: 34px; display: grid; place-items: center; background: linear-gradient(135deg, var(--blue), var(--cyan)); font-weight: 800; font-size: 13px; letter-spacing: -.02em; clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%); }
.brand .name { font-size: 15px; font-weight: 700; letter-spacing: .02em; }
.brand small { display: block; font-family: var(--mono); font-size: 9px; letter-spacing: .16em; text-transform: uppercase; color: #7f93ad; }
#menu { display: flex; gap: 2px; margin-left: auto; }
#menu a { padding: 8px 13px; color: #b9c6d6; font-size: 14px; border-bottom: 2px solid transparent; }
#menu a:hover { color: #fff; background: rgba(53, 208, 255, .08); }
#menu a.on { color: #fff; border-bottom-color: var(--cyan); }
.tel { font-family: var(--mono); font-size: 12.5px; color: #eaf6ff; border: 1px solid rgba(53, 208, 255, .45); padding: 8px 13px; white-space: nowrap; }
.tel:hover { background: var(--blue); border-color: var(--blue); color: #fff; }
.burger { display: none; }

/* hero */
.hero { min-height: 600px; display: flex; align-items: center; color: #fff; background: #07101d center/cover no-repeat; position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0;
  background: linear-gradient(95deg, rgba(7,16,29,.96) 0%, rgba(7,16,29,.86) 46%, rgba(7,16,29,.34) 100%),
              linear-gradient(rgba(53,208,255,.09) 1px, transparent 1px) 0 0/64px 64px,
              linear-gradient(90deg, rgba(53,208,255,.09) 1px, transparent 1px) 0 0/64px 64px; }
.hero .wrap { position: relative; padding: 84px 0; }
.hero h1 { color: #fff; margin: 16px 0 18px; }
.hero .lead { max-width: 640px; color: #b9c8db; font-size: 17px; margin: 0 0 26px; }
.hero .eyebrow { color: var(--cyan); }

/* buttons */
.btn { display: inline-flex; align-items: center; padding: 13px 24px; background: linear-gradient(135deg, var(--blue), #2a86ff); color: #fff; font-weight: 700; font-size: 14.5px; letter-spacing: .01em; clip-path: polygon(0 0, 100% 0, 100% 74%, calc(100% - 14px) 100%, 0 100%); }
.btn:hover { color: #fff; box-shadow: 0 10px 26px rgba(26, 109, 255, .35); }
.btn.ghost { background: transparent; border: 1px solid rgba(53, 208, 255, .5); color: #d9ecff; clip-path: none; margin-left: 10px; }
.btn.ghost:hover { background: rgba(53, 208, 255, .12); color: #fff; box-shadow: none; }

/* sections */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; background: #fff; border-bottom: 1px solid var(--line); }
.stats > div { padding: 26px 22px; border-right: 1px solid var(--line); }
.stats > div:last-child { border-right: 0; }
.stats b { display: block; font-family: var(--mono); font-size: 24px; color: var(--blue-deep); line-height: 1.15; }
.stats span { font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--blue); }
.stats p { margin: 6px 0 0; font-size: 13px; color: var(--muted); }

.blk { padding: 72px 0; }
.blk.alt { background: #e9f1fc; border-block: 1px solid var(--line); }
.blk.dark { background: var(--navy); color: #fff; }
.blk.dark p, .blk.dark .sub { color: #a7b8cc; }
.blk.dark h2 { color: #fff; }
.blk.dark .eyebrow { color: var(--cyan); }
.head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.head .btn.ghost { border-color: #9dc0f5; color: var(--blue-deep); margin-bottom: 26px; }

/* cards */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.pcard { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); color: var(--ink); position: relative; overflow: hidden; transition: .18s; }
.pcard::before { content: ""; position: absolute; left: 0; top: 0; height: 2px; width: 0; background: linear-gradient(90deg, var(--blue), var(--cyan)); transition: width .25s; z-index: 2; }
.pcard:hover { transform: translateY(-3px); box-shadow: 0 18px 44px rgba(10, 40, 90, .12); color: var(--ink); }
.pcard:hover::before { width: 100%; }
.pcard .ph { aspect-ratio: 16/10; overflow: hidden; background: #dde7f5; }
.pcard .ph img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.pcard:hover .ph img { transform: scale(1.04); }
.pcard .pb { padding: 16px 18px 20px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.pcard h3 { margin: 0; font-size: 16.5px; line-height: 1.35; }
.pcard p { margin: 0; font-size: 13.5px; color: var(--muted); }
.pcard .more { margin-top: auto; padding-top: 8px; font-family: var(--mono); font-size: 11.5px; color: var(--blue); letter-spacing: .08em; }

/* solutions */
.sols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.sol { background: #fff; border: 1px solid var(--line); display: flex; gap: 12px; padding: 12px; align-items: center; }
.sol img { width: 96px; height: 74px; object-fit: cover; flex: none; }
.sol h3 { margin: 0 0 3px; font-size: 14.5px; }
.sol p { margin: 0; font-size: 12.5px; color: var(--muted); }
.sols.big .sol { padding: 16px; }
.sols.big .sol img { width: 180px; height: 130px; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; }
.split img { border: 1px solid rgba(255, 255, 255, .15); }

.cta { background: linear-gradient(120deg, #0a1b33, #081120 60%); color: #fff; padding: 44px 46px; display: flex; align-items: center; justify-content: space-between; gap: 26px; flex-wrap: wrap; border: 1px solid rgba(53, 208, 255, .22); }
.cta h2 { margin: 0 0 8px; color: #fff; }
.cta p { margin: 0; color: #a9bcd2; }

/* layout with sidebar */
.layout { display: grid; grid-template-columns: 310px minmax(0, 1fr); gap: 34px; padding: 36px 0 70px; align-items: start; }
.side { position: sticky; top: 94px; background: #fff; border: 1px solid var(--line); }
.side h2 { margin: 0; padding: 12px 16px; font-size: 11.5px; letter-spacing: .14em; text-transform: uppercase; color: #fff; background: linear-gradient(135deg, var(--blue), #2a86ff); }
.side nav { display: flex; flex-direction: column; }
.side a { padding: 10px 13px; font-size: 12.8px; line-height: 1.38; color: #33465e; border-bottom: 1px solid #eef4fd; border-left: 3px solid transparent; }
.side a:hover { background: #f4f8ff; color: var(--blue); }
.side a.on { background: #eaf2ff; border-left-color: var(--blue); color: var(--blue-deep); font-weight: 700; }
.crumbs { font-family: var(--mono); font-size: 11.5px; color: var(--muted); letter-spacing: .04em; margin: 0 0 6px; }

/* galleries, spec, features */
.gal { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 20px 0 8px; }
.gal a { aspect-ratio: 4/3; overflow: hidden; border: 1px solid var(--line); background: #fff; }
.gal img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s; }
.gal a:hover img { transform: scale(1.06); }
.gal3 { grid-template-columns: repeat(3, 1fr); }

.content h2 { margin-top: 34px; font-size: 19px; padding-left: 10px; border-left: 3px solid var(--blue); }
.content p { font-size: 15.5px; }
.feat { margin: 0 0 20px; padding-left: 20px; columns: 2; column-gap: 30px; }
.feat li { margin-bottom: 8px; color: #33465e; break-inside: avoid; }
.spec { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); font-size: 14px; margin: 10px 0 20px; }
.spec th, .spec td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.spec th { width: 42%; background: #f2f7ff; font-weight: 600; color: #22344b; }
.spec td { font-family: var(--mono); font-size: 13px; color: #425770; }
video { width: 100%; background: #000; border: 1px solid var(--line); margin: 16px 0; }
.enquire { margin-top: 26px; padding: 22px 24px; background: #fff; border: 1px solid var(--line); border-left: 3px solid var(--blue); }
.enquire p { margin: 0 0 12px; color: var(--muted); }

/* other pages */
.pagehead { padding: 36px 0 8px; }
.about { max-width: 860px; padding-bottom: 60px; }
.about h2 { font-size: 20px; margin-top: 30px; }
.note { color: var(--muted); font-size: 14px; }
.contact { display: grid; gap: 14px; padding-bottom: 70px; max-width: 860px; }
.ccard { background: #fff; border: 1px solid var(--line); border-left: 3px solid var(--blue); padding: 18px 22px; }
.ccard .mono { font-family: var(--mono); font-size: 10.5px; letter-spacing: .16em; color: var(--muted); }
.ccard a, .ccard b { display: block; font-size: 20px; font-weight: 700; color: var(--blue-deep); margin: 6px 0 4px; }
.ccard p { margin: 0; font-size: 13px; color: var(--muted); }

/* footer */
footer { background: var(--navy); color: #93a6bd; padding: 54px 0 24px; font-size: 13.5px; border-top: 1px solid rgba(53, 208, 255, .16); }
footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 36px; }
footer h4 { color: #fff; font-family: var(--mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; margin: 0 0 12px; }
footer p { margin: 0 0 7px; color: #93a6bd; }
footer a { color: #cfe0f2; display: block; margin-bottom: 6px; }
footer a:hover { color: var(--cyan); }
footer .brand { margin-bottom: 14px; }
footer .bottom { margin-top: 32px; padding-top: 16px; border-top: 1px solid rgba(255, 255, 255, .09); color: #66788d; font-family: var(--mono); font-size: 11.5px; }

/* lightbox */
.lightbox { position: fixed; inset: 0; z-index: 200; background: rgba(4, 9, 17, .95); display: none; align-items: center; justify-content: center; }
.lightbox.on { display: flex; }
.lightbox img { max-width: 92vw; max-height: 86vh; object-fit: contain; }
.lb-btn { position: absolute; width: 44px; height: 44px; background: rgba(53, 208, 255, .1); border: 1px solid rgba(53, 208, 255, .4); color: #eaf6ff; font-size: 19px; cursor: pointer; }
.lb-btn:hover { background: var(--blue); border-color: var(--blue); }
.lb-close { top: 18px; right: 20px; }
.lb-prev { left: 20px; top: 50%; transform: translateY(-50%); }
.lb-next { right: 20px; top: 50%; transform: translateY(-50%); }
.lb-count { position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%); color: #8fa6bf; font-family: var(--mono); font-size: 12px; }


@media (max-width: 1120px) {
  .brand .tagline { display: none; }
  #menu a { padding: 8px 10px; font-size: 13.5px; }
  .tel { font-size: 12px; padding: 7px 10px; }
  .nav .wrap { gap: 12px; }
}

@media (max-width: 1020px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .grid, .sols { grid-template-columns: repeat(2, 1fr); }
  .layout { grid-template-columns: 1fr; }
  .side { position: static; }
  .side nav { flex-direction: row; flex-wrap: wrap; }
  .side a { border: 1px solid var(--line); margin: 0 4px 4px 0; }
  .split { grid-template-columns: 1fr; }
  .feat { columns: 1; }
  footer .cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  #menu { display: none; position: absolute; top: 70px; left: 0; right: 0; flex-direction: column; background: #081120; padding: 10px 16px 16px; }
  #menu.open { display: flex; }
  .burger { display: inline-flex; flex-direction: column; gap: 4px; background: none; border: 0; padding: 8px 4px; margin-left: auto; }
  .burger span { width: 20px; height: 2px; background: #fff; display: block; }
  .tel { display: none; }
  .stats, .grid, .sols { grid-template-columns: 1fr; }
  .gal, .gal3 { grid-template-columns: repeat(2, 1fr); }
  .hero { min-height: 480px; }
  .cta { padding: 28px; }
  .wrap { width: calc(100% - 32px); }
}

/* ---------- page banner ---------- */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

.promo { background: #081120; }
.promo img { width: 100%; display: block; }

.pbanner {
  position: relative; overflow: hidden; color: #fff;
  background:
    radial-gradient(1100px 380px at 12% -10%, rgba(26, 109, 255, .38), transparent 60%),
    linear-gradient(115deg, #0a1b33 0%, #081120 62%);
  border-bottom: 1px solid rgba(53, 208, 255, .18);
}
.pbanner::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(53,208,255,.07) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(53,208,255,.07) 1px, transparent 1px);
  background-size: 56px 56px;
}
.pbin { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 30px; align-items: center; padding: 26px 0; }
.pbtext .eyebrow { color: var(--cyan); margin-bottom: 4px; }
.pbtext h2 { color: #fff; margin: 4px 0 8px; font-size: clamp(20px, 2.1vw, 27px); }
.pbsub { color: #a9bcd2; font-size: 14.5px; margin: 0 0 14px; max-width: 660px; }
.pbcta { display: flex; gap: 10px; flex-wrap: wrap; margin: 0; }
.pbcta .btn.ghost { margin-left: 0; }
.pbart { justify-self: end; }
.pbart img { max-height: 210px; width: auto; max-width: 100%; border-radius: 10px; box-shadow: 0 18px 40px rgba(0, 0, 0, .45), 0 0 0 1px rgba(53, 208, 255, .18); }
@media (max-width: 900px) { .pbin { grid-template-columns: 1fr; padding: 20px 0; } .pbart { display: none; } }