/* ==========================================================================
   Suoqi Cable — design system v2
   Direction: petrol + amber. Product-led marketing register: rounded cards,
   tinted icon chips, colour-block bands, generous rhythm. Deliberately not a
   navy/orange clone of the reference site, and not the technical-editorial
   system used in v1.
   ========================================================================== */

:root {
  /* brand */
  --petrol:      #0C3B45;
  --petrol-2:    #12505C;
  --petrol-3:    #1B6470;
  --amber:       #FFB020;
  --amber-2:     #FFC64F;
  --amber-dk:    #E0921A;

  /* surfaces */
  --sand:        #F8F5F0;
  --sand-2:      #EFEAE1;
  --white:       #FFFFFF;
  --tint-teal:   #E6F1F0;
  --tint-teal-2: #CFE5E3;
  --tint-amber:  #FEF3DF;
  --tint-sky:    #E7EEF6;
  --tint-clay:   #F6EAE3;

  /* ink */
  --ink:         #16232A;
  --ink-2:       #223540;
  --muted:       #5C6F76;
  --muted-2:     #7C8D93;
  --line:        #DFE4E5;
  --line-dark:   rgba(255,255,255,.16);

  /* type */
  --font-display: "Poppins", "Segoe UI", system-ui, sans-serif;
  --font-body:    "Source Sans 3", "Segoe UI", system-ui, sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, Consolas, monospace;

  --wrap: 1220px;
  --gutter: 22px;
  --r-sm: 8px;
  --r: 14px;
  --r-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(12,59,69,.05), 0 4px 14px -8px rgba(12,59,69,.18);
  --shadow:    0 2px 4px rgba(12,59,69,.05), 0 16px 34px -20px rgba(12,59,69,.34);
  --ease: cubic-bezier(.22,.61,.36,1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--white); color: var(--ink);
  font-family: var(--font-body); font-size: 17px; line-height: 1.62;
  -webkit-font-smoothing: antialiased; overflow-wrap: break-word;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display); font-weight: 700; line-height: 1.16;
  letter-spacing: -.015em; margin: 0 0 .5em; color: var(--petrol);
  text-wrap: balance;
}
h1 { font-size: clamp(2rem, 1.3rem + 2.8vw, 3.3rem); }
h2 { font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.2rem); }
h3 { font-size: clamp(1.1rem, .98rem + .5vw, 1.35rem); }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.narrow { max-width: 820px; margin: 0 auto; }
.center { text-align: center; }
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); }

/* section scaffolding ----------------------------------------------------- */
.sec { padding: clamp(3rem, 2rem + 3.4vw, 5rem) 0; }
.sec--sand { background: var(--sand); }
.sec--tint { background: var(--tint-teal); }
.sec--petrol { background: var(--petrol); color: #EAF2F3; }
.sec--petrol h2, .sec--petrol h3 { color: #fff; }
.sec--amber { background: var(--amber); }
.sec--tight { padding: clamp(2rem, 1.4rem + 2vw, 3rem) 0; }

.sec-head { margin-bottom: 2.4rem; }
.sec-head--split { display: flex; flex-wrap: wrap; gap: 1rem 2rem; align-items: flex-end; justify-content: space-between; }
.sec-head h2 { margin-bottom: .45rem; }
.sec-head p { max-width: 62ch; color: var(--muted); margin: 0; }
.sec--petrol .sec-head p { color: #B9CDD0; }

.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--font-display); font-size: .76rem; font-weight: 600;
  letter-spacing: .12em; text-transform: uppercase; color: var(--amber-dk);
  margin: 0 0 .8rem;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--amber); border-radius: 2px; }
.sec--petrol .eyebrow { color: var(--amber-2); }

/* buttons ----------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  min-height: 50px; padding: 0 1.6rem;
  font-family: var(--font-display); font-weight: 600; font-size: .95rem;
  border-radius: 999px; border: 2px solid transparent; cursor: pointer;
  transition: transform .18s var(--ease), background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease), box-shadow .18s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn--amber { background: var(--amber); color: #25190A; }
.btn--amber:hover { background: var(--amber-2); box-shadow: 0 12px 26px -14px rgba(224,146,26,.9); }
.btn--petrol { background: var(--petrol); color: #fff; }
.btn--petrol:hover { background: var(--petrol-2); }
.btn--ghost { background: transparent; color: var(--petrol); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--petrol); }
.btn--outline-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.55); }
.btn--outline-light:hover { background: #fff; color: var(--petrol); border-color: #fff; }
.btn--white { background: #fff; color: var(--petrol); }
.btn--white:hover { background: var(--sand); }
.btn--sm { min-height: 42px; padding: 0 1.15rem; font-size: .88rem; }
.btn--wide { width: 100%; }
:focus-visible { outline: 3px solid rgba(255,176,32,.7); outline-offset: 2px; }

.link-arrow {
  display: inline-flex; align-items: center; gap: .45rem;
  font-family: var(--font-display); font-weight: 600; font-size: .9rem; color: var(--petrol-3);
}
.link-arrow::after { content: "→"; transition: transform .18s var(--ease); }
.link-arrow:hover::after { transform: translateX(4px); }

/* icons ------------------------------------------------------------------- */
.ic { width: 24px; height: 24px; flex: none; stroke: currentColor; fill: none; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.ic--lg { width: 28px; height: 28px; }
.ic-chip {
  width: 54px; height: 54px; border-radius: 16px; display: grid; place-items: center;
  background: var(--tint-teal); color: var(--petrol-3); flex: none;
}
.ic-chip--amber { background: var(--tint-amber); color: var(--amber-dk); }
.ic-chip--sky { background: var(--tint-sky); color: #2C5C86; }
.ic-chip--clay { background: var(--tint-clay); color: #A8643C; }
.ic-chip--round { border-radius: 50%; }
.ic-chip--sm { width: 40px; height: 40px; border-radius: 12px; }
.ic-chip--sm .ic { width: 20px; height: 20px; }

/* header ------------------------------------------------------------------ */
.topbar { background: var(--petrol); color: #A9C2C6; font-size: .82rem; }
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1.4rem; min-height: 40px; }
.topbar__set { display: flex; align-items: center; gap: 1.4rem; flex-wrap: wrap; }
.topbar a { display: inline-flex; align-items: center; gap: .4rem; }
.topbar a:hover { color: #fff; }
.topbar .ic { width: 16px; height: 16px; }

.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.96); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.site-header.is-stuck { box-shadow: 0 8px 26px -20px rgba(12,59,69,.6); }
.site-header .wrap { display: flex; align-items: center; gap: 1.2rem; min-height: 76px; }

.brand { display: flex; align-items: center; gap: .65rem; margin-right: auto; }
.brand__mark { width: 40px; height: 40px; flex: none; }
.brand__name { font-family: var(--font-display); font-weight: 700; font-size: 1.24rem; color: var(--petrol); line-height: 1; }
.brand__name span { color: var(--amber-dk); }
.brand__sub { display: block; font-size: .64rem; letter-spacing: .16em; text-transform: uppercase; color: var(--muted-2); margin-top: .3rem; }

.nav { display: flex; align-items: center; gap: .35rem; }
.nav a {
  display: block; padding: .55rem .85rem; border-radius: 999px;
  font-family: var(--font-display); font-weight: 500; font-size: .93rem; color: var(--ink-2);
  transition: background .16s var(--ease), color .16s var(--ease);
}
.nav a:hover { background: var(--tint-teal); color: var(--petrol); }
.nav a[aria-current="page"] { background: var(--petrol); color: #fff; }

.header-tel { display: flex; align-items: center; gap: .55rem; padding-left: 1.1rem; border-left: 1px solid var(--line); }
.header-tel .ic { width: 20px; height: 20px; color: var(--petrol-3); }
.header-tel small { display: block; font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted-2); white-space: nowrap; }
.header-tel strong { white-space: nowrap; }
.header-tel strong { font-family: var(--font-display); font-size: .95rem; color: var(--petrol); }

.nav-toggle { display: none; width: 46px; height: 46px; align-items: center; justify-content: center; background: var(--sand); border: 1px solid var(--line); border-radius: 12px; cursor: pointer; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after { content: ""; display: block; width: 18px; height: 2px; background: var(--petrol); position: relative; }
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after { position: absolute; top: 6px; }

@media (max-width: 1080px) {
  .header-tel { display: none; }
  .nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-header.is-open .nav {
    display: flex; flex-direction: column; align-items: stretch; gap: 0;
    position: absolute; inset: 100% 0 auto 0; background: #fff;
    padding: .6rem var(--gutter) 1.2rem; border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 40px -30px rgba(12,59,69,.7);
  }
  .site-header.is-open .nav a { border-radius: 10px; padding: .8rem .9rem; }
}

/* hero -------------------------------------------------------------------- */
.hero { position: relative; background: var(--petrol); color: #EAF2F3; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 88% 12%, rgba(255,176,32,.20), transparent 46%),
    radial-gradient(circle at 4% 92%, rgba(27,100,112,.55), transparent 52%);
}
.hero::after {
  content: ""; position: absolute; right: -180px; top: -120px; width: 560px; height: 560px;
  border: 1px solid rgba(255,255,255,.09); border-radius: 50%;
  box-shadow: 0 0 0 90px rgba(255,255,255,.03), 0 0 0 180px rgba(255,255,255,.02);
}
.hero .wrap { position: relative; z-index: 1; }
.hero__grid { display: grid; grid-template-columns: minmax(0,1.06fr) minmax(0,.94fr); gap: clamp(2rem, 4vw, 4rem); align-items: center; padding: clamp(3rem,2rem+3.5vw,4.8rem) 0; }
.hero h1 { color: #fff; margin-bottom: 1rem; }
.hero h1 mark { background: none; color: var(--amber); }
.hero__lede { font-size: clamp(1rem, .96rem + .3vw, 1.14rem); color: #C6D8DA; max-width: 56ch; }
.hero__ticks { list-style: none; margin: 1.5rem 0 0; padding: 0; display: grid; gap: .6rem; }
.hero__ticks li { display: flex; gap: .6rem; align-items: flex-start; font-size: .96rem; color: #D8E5E6; }
.hero__ticks .ic { width: 20px; height: 20px; color: var(--amber); margin-top: 2px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.9rem; }

.hero__media { position: relative; }
.hero__card { background: rgba(255,255,255,.06); border: 1px solid var(--line-dark); border-radius: var(--r-lg); padding: 1rem; }
.hero__shot { background: #fff; border-radius: var(--r); aspect-ratio: 4 / 3; display: flex; align-items: center; justify-content: center; overflow: hidden; padding: .75rem; }
.hero__shot img { max-width: 100%; max-height: 100%; width: auto; height: auto; object-fit: contain; transition: transform .35s var(--ease); }
.hero__thumbs { display: grid; grid-template-columns: repeat(3,1fr); gap: .6rem; margin-top: .6rem; }
.hero__thumb { background: #fff; border-radius: var(--r-sm); height: 76px; display: flex; align-items: center; justify-content: center; overflow: hidden; padding: .4rem; }
.hero__thumb img { max-width: 100%; max-height: 100%; object-fit: contain; }
.hero__badge {
  position: absolute; left: -24px; bottom: 14px; background: var(--amber); color: #25190A;
  border-radius: var(--r); padding: .85rem 1.1rem; box-shadow: var(--shadow); max-width: 220px;
}
.hero__badge strong { display: block; font-family: var(--font-display); font-size: 1.4rem; line-height: 1; }
.hero__badge span { font-size: .8rem; }
@media (max-width: 940px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__badge { position: static; margin-top: 1rem; max-width: none; display: inline-block; }
}

/* category cards ---------------------------------------------------------- */
.cards { display: grid; gap: 1.1rem; }
.cards--5 { grid-template-columns: repeat(5, minmax(0,1fr)); }
.cards--4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
.cards--3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.cards--2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
@media (max-width: 1080px) { .cards--5 { grid-template-columns: repeat(3, minmax(0,1fr)); } .cards--4 { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 760px)  { .cards--5, .cards--4, .cards--3, .cards--2 { grid-template-columns: 1fr; } }
@media (min-width: 561px) and (max-width: 760px) { .cards--3 { grid-template-columns: repeat(2, minmax(0,1fr)); } }

.catcard {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--r);
  padding: 1.35rem 1.25rem 1.15rem; display: flex; flex-direction: column; gap: .7rem;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.catcard:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--tint-teal-2); }
.catcard h3 { font-size: 1.04rem; margin: 0; }
.catcard p { font-size: .9rem; color: var(--muted); margin: 0; }
.catcard .link-arrow { margin-top: auto; padding-top: .3rem; }
.catcard__meta { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .06em; color: var(--muted-2); }

/* feature / why rows ------------------------------------------------------ */
.whycard { background: var(--white); border-radius: var(--r); padding: 1.5rem 1.4rem; border: 1px solid var(--line); }
.whycard h3 { font-size: 1.06rem; margin-bottom: .5rem; }
.whycard p { font-size: .92rem; color: var(--muted); margin: 0; }
.whycard .ic-chip { margin-bottom: 1rem; }

/* featured product lines -------------------------------------------------- */
.linecard { border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--line); background: var(--white); display: flex; flex-direction: column; }
.linecard__top { padding: 1.4rem 1.4rem 1.1rem; display: flex; align-items: center; gap: .9rem; }
.linecard--teal .linecard__top { background: var(--tint-teal); }
.linecard--sky .linecard__top { background: var(--tint-sky); }
.linecard--clay .linecard__top { background: var(--tint-clay); }
.linecard--amber .linecard__top { background: var(--tint-amber); }
.linecard__top h3 { margin: 0; font-size: 1.14rem; }
.linecard__code { font-family: var(--font-mono); font-size: .74rem; color: var(--muted-2); display: block; margin-top: .15rem; }
.linecard__shot { background: var(--sand); aspect-ratio: 16/9; display: flex; align-items: center; justify-content: center; overflow: hidden; padding: .8rem; border-bottom: 1px solid var(--line); }
.linecard__shot img { max-width: 100%; max-height: 100%; object-fit: contain; }
.linecard__body { padding: 1.3rem 1.4rem 1.5rem; display: flex; flex-direction: column; gap: .9rem; flex: 1; }
.linecard__body p { font-size: .93rem; color: var(--ink-2); margin: 0; }
.linecard ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .45rem; }
.linecard ul li { position: relative; padding-left: 1.35rem; font-size: .9rem; color: var(--muted); }
.linecard ul li::before {
  content: ""; position: absolute; left: 0; top: .48em; width: 8px; height: 8px;
  border-radius: 50%; background: var(--amber);
  box-shadow: 0 0 0 4px var(--tint-amber);
}
.linecard .link-arrow { margin-top: auto; }

/* stats band -------------------------------------------------------------- */
.stats { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 1.5rem; text-align: center; }
@media (max-width: 760px) { .stats { grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1.8rem 1rem; } }
.stat__num { font-family: var(--font-display); font-weight: 700; font-size: clamp(2rem, 1.4rem + 1.8vw, 2.9rem); color: var(--amber); line-height: 1; font-variant-numeric: tabular-nums; }
.stat__label { font-family: var(--font-display); font-weight: 600; color: #fff; margin-top: .6rem; }
.stat__note { font-size: .86rem; color: #A9C2C6; margin-top: .25rem; }

/* industry tiles ---------------------------------------------------------- */
.tile {
  display: flex; align-items: center; gap: 1rem; padding: 1.15rem 1.2rem;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--r);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.tile:hover { transform: translateY(-3px); box-shadow: var(--shadow-sm); border-color: var(--tint-teal-2); }
.tile strong { display: block; font-family: var(--font-display); font-weight: 600; font-size: 1rem; color: var(--petrol); }
.tile span { font-size: .86rem; color: var(--muted); }

/* product cards ----------------------------------------------------------- */
.pcard {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--r);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.pcard:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--tint-teal-2); }
.pcard__media { background: var(--sand); height: 232px; padding: 1rem; display: flex; align-items: center; justify-content: center; overflow: hidden; border-bottom: 1px solid var(--line); }
.pcard__media img { max-width: 100%; max-height: 100%; width: auto; height: auto; object-fit: contain; }
.pcard__body { padding: 1.15rem 1.25rem 1.35rem; display: flex; flex-direction: column; gap: .5rem; flex: 1; }
.pcard__model { display: inline-flex; align-items: center; gap: .4rem; align-self: flex-start; font-family: var(--font-mono); font-size: .72rem; letter-spacing: .04em; color: var(--petrol-3); background: var(--tint-teal); padding: .25rem .6rem; border-radius: 999px; }
.pcard__name { font-size: 1.06rem; margin: .1rem 0 0; }
.pcard__name a { color: inherit; }
.pcard__desc { font-size: .9rem; color: var(--muted); margin: 0; }
.pcard__specs { margin: .55rem 0 0; padding-top: .8rem; border-top: 1px dashed var(--line); display: grid; gap: .4rem; }
.pcard__specs div { display: flex; justify-content: space-between; gap: .7rem; font-size: .82rem; }
.pcard__specs dt { color: var(--muted-2); flex: 0 1 auto; }
.pcard__specs dd { margin: 0; font-family: var(--font-mono); font-size: .8rem; text-align: right; }
.pcard__more { margin-top: auto; padding-top: .9rem; }

/* filter chips ------------------------------------------------------------ */
.filters { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 2rem; }
.chip {
  font-family: var(--font-display); font-size: .87rem; font-weight: 500;
  padding: .5rem 1.05rem; border-radius: 999px; border: 1px solid var(--line);
  background: var(--white); color: var(--ink-2); cursor: pointer;
  transition: background .16s var(--ease), color .16s var(--ease), border-color .16s var(--ease);
}
.chip:hover { border-color: var(--petrol-3); color: var(--petrol); }
.chip[aria-pressed="true"] { background: var(--petrol); border-color: var(--petrol); color: #fff; }

/* page header ------------------------------------------------------------- */
.pagehead { background: var(--petrol); color: #CFE0E2; padding: clamp(2.4rem, 2rem + 2vw, 3.6rem) 0 clamp(2.2rem, 1.8rem + 1.6vw, 3.2rem); position: relative; overflow: hidden; }
.pagehead::before { content: ""; position: absolute; inset: 0; background-image: radial-gradient(circle at 92% 10%, rgba(255,176,32,.18), transparent 45%); }
.pagehead .wrap { position: relative; }
.pagehead h1 { color: #fff; margin-bottom: .5rem; }
.pagehead p { max-width: 68ch; margin: 0; color: #B9CDD0; }
.crumbs { font-size: .82rem; color: #93AEB1; padding-top: 1.1rem; }
.crumbs a:hover { color: #fff; }
.crumbs span { margin: 0 .4rem; opacity: .6; }

/* spec table -------------------------------------------------------------- */
.spectable { width: 100%; border-collapse: collapse; font-size: .92rem; background: var(--white); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.spectable caption { caption-side: top; text-align: left; font-family: var(--font-display); font-weight: 600; font-size: .9rem; color: var(--petrol); padding: .9rem 1rem; background: var(--tint-teal); border-bottom: 1px solid var(--line); }
.spectable th, .spectable td { text-align: left; padding: .72rem .95rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.spectable tr:last-child th, .spectable tr:last-child td { border-bottom: 0; }
.spectable th { width: 40%; font-weight: 600; color: var(--ink-2); font-size: .88rem; }
.spectable td { font-family: var(--font-mono); font-size: .84rem; color: var(--petrol-3); }
.spectable tbody tr:nth-child(even) { background: #FBFCFC; }

/* prose / detail ---------------------------------------------------------- */
.prose { max-width: 74ch; }
.prose h2 { margin-top: 2.2rem; }
.prose h3 { margin-top: 1.8rem; }
.prose ul { padding-left: 1.15rem; }
.prose li { margin-bottom: .5rem; }

.split { display: grid; grid-template-columns: minmax(0,1.2fr) minmax(0,.8fr); gap: clamp(1.8rem, 3.5vw, 3.4rem); align-items: start; }
.split--form { grid-template-columns: minmax(0,1.25fr) minmax(0,.75fr); }
@media (max-width: 900px) { .split, .split--form { grid-template-columns: 1fr; } }
.split > *, .pdetail > * { min-width: 0; }
.side-card { background: var(--sand); border-radius: var(--r); padding: 1.4rem; border: 1px solid var(--line); }
.side-card + .side-card { margin-top: 1rem; }
.side-card h3 { font-size: 1.02rem; margin-bottom: .7rem; }
.side-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .55rem; }
.side-list li { display: flex; gap: .6rem; font-size: .9rem; color: var(--ink-2); }
.side-list li::before { content: "✓"; color: var(--amber-dk); font-weight: 700; flex: none; }
.sticky-side { position: sticky; top: 100px; }

.pdetail { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.15fr); gap: clamp(1.8rem, 3vw, 3rem); align-items: start; }
@media (max-width: 900px) { .pdetail { grid-template-columns: 1fr; } }
.pdetail__media { background: var(--sand); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 1.2rem; position: sticky; top: 100px; }
.pdetail__shot { background: #fff; border-radius: var(--r); height: 360px; display: flex; align-items: center; justify-content: center; overflow: hidden; padding: 1rem; }
.pdetail__shot img { max-width: 100%; max-height: 100%; width: auto; height: auto; object-fit: contain; }
.pdetail__meta { display: flex; justify-content: space-between; gap: 1rem; font-family: var(--font-mono); font-size: .78rem; color: var(--muted); margin-top: .9rem; }
.pdetail__meta a { color: var(--petrol-3); }
.pdetail__section { padding: 1.5rem 0; border-top: 1px dashed var(--line); }
.pdetail__section:first-child { border-top: 0; padding-top: 0; }
.pdetail__section h2 { font-size: 1.24rem; margin-bottom: .5rem; }
.tagrow { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1rem; }
.tag { font-family: var(--font-display); font-size: .84rem; font-weight: 500; padding: .4rem .85rem; border-radius: 999px; background: var(--tint-teal); color: var(--petrol-3); }
.tag:hover { background: var(--tint-teal-2); }

/* FAQ --------------------------------------------------------------------- */
.faq { display: grid; gap: .7rem; }
.faq details { background: var(--white); border: 1px solid var(--line); border-radius: var(--r); padding: 1.05rem 1.2rem; }
.faq details[open] { border-color: var(--tint-teal-2); box-shadow: var(--shadow-sm); }
.faq summary { font-family: var(--font-display); font-weight: 600; font-size: 1rem; color: var(--petrol); cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--amber-dk); font-size: 1.3rem; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq .faq__a { margin-top: .8rem; font-size: .95rem; color: var(--ink-2); }

/* gallery ----------------------------------------------------------------- */
.gal { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 1rem; }
.gal--3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
@media (max-width: 900px) { .gal--3 { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 560px) { .gal--3 { grid-template-columns: 1fr; } }
@media (max-width: 900px) { .gal { grid-template-columns: repeat(2, minmax(0,1fr)); } }
.gal figure { margin: 0; background: var(--white); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.gal__shot { background: var(--sand); height: 210px; display: flex; align-items: center; justify-content: center; overflow: hidden; padding: .8rem; }
.gal__shot img { max-width: 100%; max-height: 100%; width: auto; height: auto; object-fit: contain; }
.gal figcaption { padding: .8rem .95rem 1rem; font-size: .88rem; color: var(--ink-2); font-weight: 500; }
.gal figcaption small { display: block; color: var(--muted-2); font-family: var(--font-mono); font-size: .72rem; margin-top: .2rem; }

/* forms ------------------------------------------------------------------- */
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1rem; }
@media (max-width: 760px) { .form-grid { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: .35rem; }
.field--full { grid-column: 1 / -1; }
.field label { font-family: var(--font-display); font-size: .82rem; font-weight: 600; color: var(--ink-2); }
.field input, .field select, .field textarea {
  font-family: var(--font-body); font-size: .96rem; color: var(--ink);
  background: var(--white); border: 1px solid var(--line); border-radius: var(--r-sm);
  padding: .72rem .85rem; min-height: 48px; width: 100%;
  transition: border-color .16s var(--ease), box-shadow .16s var(--ease);
}
.field textarea { min-height: 132px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--petrol-3); box-shadow: 0 0 0 3px rgba(27,100,112,.14); outline: none; }
.field__hint { font-size: .8rem; color: var(--muted); }
.form-note { font-size: .85rem; color: var(--muted); }

/* contact rows ------------------------------------------------------------ */
.contact-rows { display: grid; gap: .7rem; }
.contact-row { display: flex; gap: .8rem; align-items: flex-start; }
.contact-row > * { min-width: 0; }
.contact-row span, .contact-row a, .topbar a, .footer-legal span { overflow-wrap: break-word; }
.contact-row .ic { width: 20px; height: 20px; color: var(--amber-dk); margin-top: .18rem; }
.contact-row strong { display: block; font-family: var(--font-display); font-size: .92rem; color: var(--petrol); }
.contact-row span, .contact-row a { font-size: .93rem; color: var(--ink-2); }
.contact-row a:hover { color: var(--petrol-3); }

/* CTA band ---------------------------------------------------------------- */
.cta-band { background: var(--amber); color: #25190A; }
.cta-band .wrap { display: grid; grid-template-columns: minmax(0,1.3fr) minmax(0,.7fr); gap: 2rem; align-items: center; padding: clamp(2.4rem,2rem+2.4vw,3.6rem) 0; }
@media (max-width: 900px) { .cta-band .wrap { grid-template-columns: 1fr; } }
.cta-band h2 { color: #25190A; margin-bottom: .5rem; }
.cta-band p { color: #4A3413; margin: 0; max-width: 60ch; }
.cta-band__actions { display: flex; flex-wrap: wrap; gap: .7rem; }
@media (max-width: 900px) { .cta-band__actions .btn { flex: 1 1 auto; } }

/* footer ------------------------------------------------------------------ */
.site-footer { background: var(--petrol); color: #A9C2C6; font-size: .92rem; padding-top: clamp(2.6rem,2rem+2.5vw,3.8rem); }
.footer-grid { display: grid; grid-template-columns: minmax(0,1.5fr) repeat(3, minmax(0,1fr)); gap: 2rem; padding-bottom: 2.4rem; }
@media (max-width: 980px) { .footer-grid { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer h3 { color: #fff; font-size: .92rem; margin-bottom: 1rem; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .55rem; }
.site-footer a:hover { color: #fff; }
.footer-brand { display: flex; align-items: center; gap: .6rem; margin-bottom: 1rem; }
.footer-brand strong { font-family: var(--font-display); font-size: 1.2rem; color: #fff; }
.footer-brand strong span { color: var(--amber); }
.footer-legal { border-top: 1px solid var(--line-dark); padding: 1.2rem 0 1.8rem; display: flex; flex-wrap: wrap; gap: .8rem; justify-content: space-between; font-size: .8rem; color: #8FA9AC; }

/* misc -------------------------------------------------------------------- */
.rule { height: 1px; background: var(--line); border: 0; margin: 0; }
.badge-row { display: flex; flex-wrap: wrap; gap: .5rem; }
.badge {
  display: inline-flex; align-items: center; gap: .4rem;
  font-family: var(--font-display); font-size: .82rem; font-weight: 500;
  background: var(--white); border: 1px solid var(--line); border-radius: 999px; padding: .35rem .8rem; color: var(--ink-2);
}
.badge .ic { width: 16px; height: 16px; color: var(--amber-dk); }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 1rem; top: .6rem; z-index: 80; background: var(--petrol); color: #fff; padding: .6rem 1rem; border-radius: var(--r-sm); }

.marquee { display: flex; flex-wrap: wrap; gap: .6rem 1.6rem; align-items: center; }
.marquee span { display: inline-flex; align-items: center; gap: .45rem; font-size: .88rem; color: var(--muted); }
.marquee .ic { width: 18px; height: 18px; color: var(--amber-dk); }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  html { scroll-behavior: auto; }
}

@media (max-width: 680px) {
  body { font-size: 16px; }
  .topbar__set--meta { display: none; }
  .hero__badge { left: 0; }
  .stats { gap: 1.4rem 1rem; }
  .pdetail__media, .sticky-side { position: static; }
  .pdetail__shot { height: 270px; }
  .sec-head { margin-bottom: 1.8rem; }
  .spectable th { width: 46%; }
  .spectable th, .spectable td { padding: .65rem .7rem; }
}


/* ---- language switch + Chinese typography ------------------------------- */
.langswitch { display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--font-display); font-weight: 600; letter-spacing: .02em; white-space: nowrap; }
.langswitch__sep { color: #6E8B90; font-weight: 400; }
.langswitch__current { color: #fff; }
.langswitch a { color: inherit; }

html[lang^="zh"] {
  --font-display: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC",
                  "Source Han Sans SC", "Poppins", "Segoe UI", system-ui, sans-serif;
  --font-body: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC",
               "Source Sans 3", "Segoe UI", system-ui, sans-serif;
}
html[lang^="zh"] body { font-size: 16.5px; line-height: 1.75; }
html[lang^="zh"] h1, html[lang^="zh"] h2, html[lang^="zh"] h3,
html[lang^="zh"] h4, html[lang^="zh"] .brand__name { letter-spacing: 0; }
html[lang^="zh"] .btn, html[lang^="zh"] .chip, html[lang^="zh"] .nav a { letter-spacing: .01em; }


/* ==========================================================================
   v3 — visual & interaction upgrade (stage A)
   Motion base: data-reveal scroll entrance · count-up stats · hero plate ·
   hero thumbnail switching · amber CTA sweep · petrol grid texture.
   Only elements carrying the markers below are affected — untouched pages
   keep their previous rendering.
   ========================================================================== */

/* --- v3: design tokens & norms ------------------------------------------ */
:root {
  /* v3 additions: deeper petrol for gradient bands & footer */
  --petrol-deep: #082B33;
  --petrol-ink:  #062027;

  /* v3 spacing norm (applied via .sec--v3 or future sections) */
  --space-section: clamp(3.5rem, 2rem + 4vw, 6rem);

  /* v3 motion */
  --ease-out: cubic-bezier(.22,.61,.36,1);
  --dur-in: .55s;
  --dur-hover: .2s;
}

/* --- v3: motion base (scroll entrance) ----------------------------------- */
/* Initial hidden state ONLY when JS is available (html.js), so the page is
   fully readable without JavaScript. */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity var(--dur-in) var(--ease-out),
              transform var(--dur-in) var(--ease-out);
  will-change: opacity, transform;
}
.js [data-reveal].is-in { opacity: 1; transform: none; }

.js [data-reveal][data-delay="1"] { transition-delay: .08s; }
.js [data-reveal][data-delay="2"] { transition-delay: .16s; }
.js [data-reveal][data-delay="3"] { transition-delay: .24s; }
.js [data-reveal][data-delay="4"] { transition-delay: .32s; }
.js [data-reveal][data-delay="5"] { transition-delay: .4s; }

/* --- v3: hero upgrades ---------------------------------------------------- */
/* engineering grid texture layered over the petrol band (independent of the
   ::before glow, which sits above the element background). */
.hero {
  background-color: var(--petrol);
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size: 44px 44px;
  background-position: center;
}
/* a touch more depth on the amber glow */
.hero::before {
  background-image:
    radial-gradient(circle at 88% 12%, rgba(255,176,32,.24), transparent 46%),
    radial-gradient(circle at 4% 92%, rgba(27,100,112,.6), transparent 52%);
}

/* hero caption plate (drawing-title style corner tag) */
.hero__plate {
  position: absolute; right: 0; bottom: 0; z-index: 3;
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .08em;
  color: rgba(233,242,243,.55);
  background: rgba(6,32,39,.42);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 8px 0 0 0;
  padding: .5rem .9rem;
  display: flex; align-items: center; gap: .5rem;
  backdrop-filter: blur(4px);
}
.hero__plate::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--amber); flex: none;
}
@media (max-width: 680px) { .hero__plate { display: none; } }

/* hero main image gentle zoom on hover (desktop only) */
.hero__shot { position: relative; }
@media (hover: hover) {
  .hero__shot:hover img { transform: scale(1.025); }
}

/* hero thumbnail switching affordance */
.hero__thumb { cursor: pointer; transition: outline-color .18s var(--ease-out), transform .18s var(--ease-out); }
.hero__thumb:hover { outline: 2px solid rgba(255,176,32,.55); outline-offset: -2px; }
.hero__thumb.is-active { outline: 2px solid var(--amber); outline-offset: -2px; }
.hero__thumb:focus-visible { outline: 3px solid var(--amber); outline-offset: 1px; }

/* --- v3: amber CTA sweep -------------------------------------------------- */
.btn--amber { position: relative; overflow: hidden; }
.btn--amber::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(115deg, transparent 32%, rgba(255,255,255,.32) 50%, transparent 68%);
  transform: translateX(-130%);
  transition: transform .55s var(--ease-out);
  pointer-events: none;
}
.btn--amber:hover::before { transform: translateX(130%); }
.btn--amber:active::before { transition: none; transform: translateX(130%); }

/* --- v3: Chinese typography (upgrade) ------------------------------------- */
/* Prefer Noto/Source Han Sans SC when installed; falls back to YaHei/PingFang.
   (Self-hosting the webfonts is a stage-C optimisation.) */
html[lang^="zh"] {
  --font-display: "Noto Sans SC", "Source Han Sans SC", "Source Han Sans CN",
                  "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB",
                  "Poppins", "Segoe UI", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "Source Han Sans CN",
               "Microsoft YaHei", "PingFang SC", "Source Sans 3",
               "Segoe UI", system-ui, sans-serif;
}
/* slightly heavier Chinese headings for presence */
html[lang^="zh"] h1, html[lang^="zh"] h2, html[lang^="zh"] .hero__badge strong { font-weight: 800; }

/* --- v3: motion-only icons that need a pulse ------------------------------ */
/* none in stage A — reserved for later stages */

/* reduced-motion fallback already covered by the global rule above:
   .js [data-reveal] transitions collapse to ~0ms, so content is never stuck. */


/* ==========================================================================
   v4 — stage B: interaction upgrade
   · v4.1 card hover set (catcard / linecard / tile / whycard / pcard)
   · v4.2 seamless marquee
   · v4.3 FAQ smooth open + accordion
   · v4.5 live form validation + submit loading
   · v4.6 mobile sticky RFQ bar
   Everything degrades gracefully without JavaScript.
   ========================================================================== */

/* --- v4.1 card hover set -------------------------------------------------- */
@media (hover: hover) {
  .catcard .ic-chip { transition: background .22s var(--ease-out), color .22s var(--ease-out), transform .22s var(--ease-out); }
  .catcard:hover .ic-chip { background: var(--petrol); color: #fff; transform: translateY(-2px); }
  .catcard .link-arrow::after { transition: transform .2s var(--ease-out); }
  .catcard:hover .link-arrow::after { transform: translateX(5px); }

  .linecard { transition: transform .22s var(--ease-out), box-shadow .22s var(--ease-out), border-color .22s var(--ease-out); }
  .linecard__shot img { transition: transform .35s var(--ease-out); }
  .linecard:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--amber); }
  .linecard:hover .linecard__shot img { transform: scale(1.05); }

  .tile .ic-chip { transition: transform .2s var(--ease-out); }
  .tile:hover .ic-chip { transform: translateX(6px); }

  .whycard { transition: transform .22s var(--ease-out), box-shadow .22s var(--ease-out); }
  .whycard:hover { transform: translateY(-3px); box-shadow: var(--shadow-sm); }
  .whycard .ic-chip svg { transition: transform .25s var(--ease-out); }
  .whycard:hover .ic-chip svg { transform: rotate(-8deg) scale(1.1); }

  .pcard__media img { transition: transform .35s var(--ease-out); }
  .pcard:hover .pcard__media img { transform: scale(1.05); }
}

/* --- v4.2 seamless marquee ------------------------------------------------ */
.marquee { display: block; overflow: hidden; position: relative; }
.marquee__track { display: flex; align-items: center; gap: 2.4rem; width: max-content; animation: marqueeScroll 34s linear infinite; }
.marquee__track > span { flex: none; }
.marquee:hover .marquee__track { animation-play-state: paused; }
@keyframes marqueeScroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) {
  .marquee__track { animation: none; flex-wrap: wrap; width: auto; gap: .6rem 1.6rem; }
}

/* --- v4.3 FAQ smooth open + accordion ------------------------------------ */
.faq summary { transition: color .18s var(--ease-out); }
.faq summary:hover { color: var(--petrol-3); }
.faq summary::after { transition: transform .25s var(--ease-out); display: inline-block; }
.faq details[open] .faq__a { animation: faqFade .3s var(--ease-out); }
@keyframes faqFade { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
.faq details { transition: border-color .2s var(--ease-out), box-shadow .2s var(--ease-out); }

/* --- v4.5 live form validation + submit loading -------------------------- */
.field.is-invalid input, .field.is-invalid select, .field.is-invalid textarea {
  border-color: #C0392B; box-shadow: 0 0 0 3px rgba(192,57,43,.12); }
.field__error { display: none; font-size: .8rem; color: #C0392B; margin-top: .15rem; }
.field.is-invalid .field__error { display: block; }
@keyframes shakeX { 0%,100% { transform: translateX(0); } 20%,60% { transform: translateX(-4px); } 40%,80% { transform: translateX(4px); } }
.field.is-shaking { animation: shakeX .34s var(--ease-out); }
.btn.is-loading { pointer-events: none; opacity: .85; }
.btn.is-loading::after { content: ""; width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,.45); border-top-color: #fff; animation: btnSpin .7s linear infinite; margin-left: .5rem; }
@keyframes btnSpin { to { transform: rotate(360deg); } }

/* --- v4.6 mobile sticky RFQ bar ------------------------------------------ */
.sticky-cta { position: fixed; left: 0; right: 0; bottom: 0; z-index: 60; display: none; gap: .6rem;
  padding: .7rem .9rem calc(.7rem + env(safe-area-inset-bottom, 0px)); background: rgba(255,255,255,.97);
  border-top: 1px solid var(--line); box-shadow: 0 -10px 26px -20px rgba(12,59,69,.7);
  transform: translateY(115%); transition: transform .3s var(--ease-out); }
.sticky-cta.is-visible { transform: none; }
.sticky-cta .btn { flex: 1; min-height: 46px; }
@media (max-width: 860px) { .sticky-cta { display: flex; } }
@media (prefers-reduced-motion: reduce) { .sticky-cta { transition: none; } }

/* --- v4.7 footer readability: light text on petrol ------------------------ */
/* The contact rows inherited dark ink text (--ink-2) inside the dark footer —
   unreadable on petrol. Lift every footer text tier for proper contrast. */
.site-footer { color: #C3D6D9; }
.site-footer .contact-row span, .site-footer .contact-row a { color: #DCE9EB; }
.site-footer .contact-row a:hover { color: #ffffff; }
.site-footer .contact-row .ic { color: var(--amber); }
.site-footer .footer-legal { color: #A7C0C4; }
.site-footer a { color: inherit; }


/* --- v4.9 header nowrap fix (2026-11-04) --------------------------------
   Header content (~1400px) overflowed the 1176px .wrap, flex-shrink forced
   every nav item to wrap its last char. The phone block duplicates the
   topbar info, so it is hidden here; all text is locked to nowrap. */
.header-tel { display: none; }
.nav a, .brand__name, .brand__sub, .btn { white-space: nowrap; }
.brand { flex: none; }
.nav { flex: none; }
/* ----------------------------------------------------------------------- */