/* ===========================================================
   GlucoFreedom / 智糖无界 — Site-wide design system
   Direction C · Brand Faithful
   Warm amber accent (#B45309) on neutral paper; geometric sans.
   =========================================================== */

:root {
  --bg: #ffffff;
  --paper: #f8fafc;
  --paper-2: #f1f5f9;
  --fg: #0f172a;
  --fg-2: #1e293b;
  --muted: #475569;
  --muted-2: #64748b;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;

  --accent: #b45309;
  --accent-2: #c2410c;
  --accent-3: #f59e0b;
  --accent-soft: #fef3e8;
  --accent-line: #fed7aa;

  --positive: #0f766e;
  --danger: #b91c1c;

  --display: -apple-system, BlinkMacSystemFont, 'Inter', 'Literata', 'Segoe UI', system-ui, sans-serif;
  --body: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', system-ui, sans-serif;
  --mono: 'JetBrains Mono', 'IBM Plex Mono', ui-monospace, Menlo, monospace;

  --shadow-sm: 0 2px 8px -2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px -8px rgba(15, 23, 42, 0.10);
  --shadow-lg: 0 20px 60px -20px rgba(15, 23, 42, 0.18);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;

  --maxw: 1280px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
html, body { background: var(--bg); color: var(--fg); }
body {
  font: 16px/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; transition: color 0.15s; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.num { font-variant-numeric: tabular-nums; }
.eyebrow {
  font-family: var(--mono); font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.2em; color: var(--muted-2);
}

/* ===== Top bar (sticky) ===== */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  display: flex; align-items: center; gap: 32px;
  height: 72px;
}
.brand {
  display: flex; align-items: center; gap: 12px;
  font: 600 17px/1 var(--display); letter-spacing: -0.01em;
  flex-shrink: 0;
}
.brand .mark {
  width: 32px; height: 32px;
  background: var(--fg);
  border-radius: 8px;
  color: #fff;
  display: grid; place-items: center;
  font: 600 14px/1 var(--display);
  letter-spacing: -0.02em;
}
.brand .cn { font-weight: 400; color: var(--muted); font-size: 14px; margin-left: 4px; }
.brand .en { font-weight: 400; color: var(--muted); font-size: 14px; margin-left: 4px; }

.nav { display: flex; gap: 28px; flex: 1; justify-content: center; }
.nav a {
  font-size: 14px; color: var(--fg); padding: 8px 0; position: relative;
  white-space: nowrap;
}
.nav a:hover { color: var(--accent); }
.nav a.active { color: var(--accent); font-weight: 600; }
.nav a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px; background: var(--accent);
}
.nav .has-sub { position: relative; display: flex; align-items: center; }
.nav .has-sub > .sub {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(8px);
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 8px; min-width: 180px; box-shadow: var(--shadow-md);
  opacity: 0; pointer-events: none; transition: opacity 0.15s, transform 0.15s;
}
.nav .has-sub:hover > .sub, .nav .has-sub:focus-within > .sub {
  opacity: 1; pointer-events: auto; transform: translateX(-50%) translateY(0);
}
.nav .has-sub .sub a {
  display: block; padding: 8px 14px; border-radius: 6px; font-size: 13px; white-space: nowrap;
}
.nav .has-sub .sub a:hover { background: var(--paper); color: var(--accent); }

.topbar-right { display: flex; gap: 12px; align-items: center; flex-shrink: 0; }
.lang {
  display: inline-flex; align-items: center;
  border: 1px solid var(--border); border-radius: 8px; overflow: hidden;
  font-family: var(--mono); font-size: 12px;
}
.lang button {
  padding: 7px 12px; color: var(--muted); background: transparent;
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.04em;
  transition: background 0.15s, color 0.15s;
}
.lang button.on { background: var(--accent); color: #fff; }
.lang button:not(.on):hover { background: var(--paper); color: var(--fg); }
.cta {
  padding: 10px 18px; background: var(--fg); color: #fff;
  border-radius: 8px; font-size: 14px; font-weight: 500;
  display: inline-flex; align-items: center; gap: 6px;
}
.cta:hover { background: var(--accent); }
.cta.ghost { background: transparent; color: var(--fg); border: 1px solid var(--border-strong); }
.cta.ghost:hover { background: var(--paper); color: var(--fg); border-color: var(--accent); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 22px; border-radius: 10px;
  font-size: 14px; font-weight: 500; transition: all 0.15s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-2); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--fg); border: 1px solid var(--border-strong); }
.btn-ghost:hover { background: var(--paper); border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 9px 16px; font-size: 13px; border-radius: 8px; }

/* ===== Section heads ===== */
section { padding: 96px 0; border-bottom: 1px solid var(--border); }
section.flush-top { padding-top: 0; }
section.no-border-bottom { border-bottom: 0; }
.sec-head {
  display: grid; grid-template-columns: 1fr 1.6fr; gap: 48px;
  margin-bottom: 64px; align-items: end;
}
.sec-head .lhs .num {
  display: inline-flex; align-items: center; gap: 12px; margin-bottom: 16px;
  font-family: var(--mono); font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.2em; color: var(--accent);
}
.sec-head .lhs .num::before {
  content: ""; display: inline-block; width: 32px; height: 1.5px; background: var(--accent);
}
.sec-head h2 {
  font: 600 44px/1.1 var(--display); letter-spacing: -0.02em; color: var(--fg);
}
.sec-head h2 em { color: var(--accent); font-style: normal; }
.sec-head .sub { font-size: 16px; color: var(--muted); line-height: 1.6; }
.sec-head.center { grid-template-columns: 1fr; text-align: center; }
.sec-head.center .lhs .num { justify-content: center; }
.sec-head.center .sub { max-width: 720px; margin: 0 auto; }

/* ===== Hero ===== */
.hero {
  padding: 72px 0 80px;
  background: linear-gradient(180deg, var(--paper) 0%, #fff 100%);
  position: relative; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; right: -200px; top: -200px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, oklch(95% 0.04 60) 0%, transparent 70%);
  pointer-events: none;
}
.hero-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
  position: relative;
}
.hero h1 {
  font: 600 60px/1.05 var(--display);
  letter-spacing: -0.03em; color: var(--fg); margin-bottom: 24px;
}
.hero h1 .accent { color: var(--accent); }
.hero p.lede {
  font-size: 18px; line-height: 1.6; color: var(--muted);
  max-width: 540px; margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 12px; margin-bottom: 48px; flex-wrap: wrap; }
.hero-trust {
  display: flex; align-items: center; gap: 24px; padding-top: 32px;
  border-top: 1px solid var(--border); flex-wrap: wrap;
}
.hero-trust .badge {
  display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--muted);
}
.hero-trust .badge i { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

.hero-card {
  background: var(--bg);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow-lg);
}
.hero-card .head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 22px; background: var(--paper);
}
.hero-card .head .label { font: 600 14px var(--display); }
.hero-card .head .label small { color: var(--muted); font-weight: 400; margin-left: 4px; }
.hero-card .head .pill {
  padding: 4px 10px; border-radius: 999px; background: var(--accent); color: #fff;
  font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.12em;
}
.hero-card .img-wrap {
  aspect-ratio: 4/3; background: linear-gradient(180deg, #fff 0%, var(--paper) 100%);
  display: grid; place-items: center; padding: 32px;
}
.hero-card .img-wrap img { max-height: 100%; width: auto; object-fit: contain; }
.hero-card .spec {
  padding: 20px 22px; border-top: 1px solid var(--border); background: var(--paper);
  display: grid; grid-template-columns: 1fr 1fr 1fr;
}
.hero-card .spec div { padding: 0 12px; border-right: 1px solid var(--border); }
.hero-card .spec div:first-child { padding-left: 0; }
.hero-card .spec div:last-child { border-right: 0; padding-right: 0; }
.hero-card .spec .k { font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.16em; color: var(--muted); }
.hero-card .spec .v { font: 600 18px/1.3 var(--display); color: var(--fg); margin-top: 4px; }

/* ===== Product cards ===== */
.products { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.product {
  background: var(--bg); border: 1px solid var(--border); border-radius: 16px;
  padding: 32px; transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
  display: flex; flex-direction: column;
}
.product:hover { border-color: var(--accent); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.product .row {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px;
}
.product .gen {
  font-family: var(--mono); font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.16em; color: var(--accent);
}
.product .status {
  font-family: var(--mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: 0.14em; color: var(--positive);
  padding: 4px 10px; border-radius: 999px; background: rgba(15, 118, 110, 0.08);
}
.product h3 { font: 600 30px/1.2 var(--display); letter-spacing: -0.015em; color: var(--fg); margin-bottom: 8px; }
.product .tag { color: var(--muted); font-size: 14px; margin-bottom: 16px; }
.product p { color: var(--muted); font-size: 14px; line-height: 1.6; margin-bottom: 24px; flex: 1; }
.product .specs {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px 24px;
  padding: 20px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}
.product .specs .k { font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--muted); }
.product .specs .v { font: 600 18px/1.2 var(--display); color: var(--fg); margin-top: 4px; }
.product .foot {
  display: flex; align-items: baseline; justify-content: space-between;
  flex-wrap: wrap; gap: 8px;
}
.product .foot .price { font: 600 26px/1 var(--display); color: var(--fg); }
.product .foot .price small { font-size: 13px; color: var(--muted); font-weight: 400; margin-left: 4px; }
.product .foot .s { font-size: 12px; color: var(--muted); }

/* ===== Data band ===== */
.data-band {
  background: var(--fg); border-radius: 20px; padding: 64px 56px; color: #fff;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px;
  position: relative; overflow: hidden;
}
.data-band::before {
  content: ""; position: absolute; left: -100px; bottom: -100px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, var(--accent) 0%, transparent 60%);
  opacity: 0.18;
}
.data-band .item .v {
  font: 600 52px/1 var(--display); letter-spacing: -0.02em; position: relative;
}
.data-band .item .v .unit { font-size: 20px; color: var(--accent-3); margin-left: 4px; font-weight: 500; }
.data-band .item .k {
  font-size: 14px; color: rgba(255, 255, 255, 0.7); margin-top: 12px; line-height: 1.4;
}
.data-band .item .src {
  font-family: var(--mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: 0.14em; color: rgba(255, 255, 255, 0.4); margin-top: 12px;
}

/* ===== Tech pillars ===== */
.tech-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.tech-cell {
  padding: 32px; border: 1px solid var(--border); border-radius: 14px; background: var(--bg);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.tech-cell:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
.tech-cell .top { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.tech-cell .num {
  font-family: var(--mono); font-size: 11px; padding: 4px 8px; border-radius: 6px;
  background: var(--accent-soft); color: var(--accent); letter-spacing: 0.14em;
}
.tech-cell h4 { font: 600 19px/1.3 var(--display); letter-spacing: -0.01em; color: var(--fg); }
.tech-cell p { color: var(--muted); font-size: 14px; line-height: 1.6; }
.tech-cell .metrics {
  margin-top: 20px; padding-top: 20px; border-top: 1px dashed var(--border);
  display: flex; gap: 32px; flex-wrap: wrap;
}
.tech-cell .metrics div .v { font: 600 18px/1 var(--display); color: var(--accent); }
.tech-cell .metrics div .k {
  font-family: var(--mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: 0.14em; color: var(--muted); margin-top: 4px;
}

/* ===== Sensor callout ===== */
.sensor-row { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: center; }
.sensor-img {
  background: var(--paper); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 40px; aspect-ratio: 1.1/1; display: grid; place-items: center; position: relative;
  overflow: hidden;
}
.sensor-img img { max-width: 100%; max-height: 100%; object-fit: contain; border-radius: 8px; }
.sensor-img .badge {
  position: absolute; top: 20px; left: 20px;
  padding: 6px 12px; border-radius: 999px; background: var(--accent); color: #fff;
  font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em;
}
.sensor-copy .eyebrow { color: var(--accent); margin-bottom: 16px; }
.sensor-copy h3 {
  font: 600 38px/1.15 var(--display); letter-spacing: -0.02em; color: var(--fg); margin-bottom: 16px;
}
.sensor-copy p { color: var(--muted); font-size: 15px; line-height: 1.65; margin-bottom: 24px; }
.sensor-copy ul { list-style: none; }
.sensor-copy li {
  padding: 18px 0; border-top: 1px solid var(--border);
  display: grid; grid-template-columns: 1fr 1fr; gap: 32px;
}
.sensor-copy li:last-child { border-bottom: 1px solid var(--border); }
.sensor-copy li .k {
  font-family: var(--mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: 0.14em; color: var(--muted); margin-bottom: 4px;
}
.sensor-copy li .v { font: 600 16px/1.4 var(--display); color: var(--fg); }
.sensor-copy li .v em { color: var(--accent); font-style: normal; }

/* ===== Team ===== */
.team-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.member {
  border: 1px solid var(--border); border-radius: 14px; overflow: hidden;
  background: var(--bg); transition: border-color 0.2s, transform 0.2s;
}
.member:hover { border-color: var(--accent); transform: translateY(-2px); }
.member .ph {
  aspect-ratio: 1/1; background: var(--paper);
  display: grid; place-items: center; padding: 12px;
}
.member .ph img { max-width: 100%; max-height: 100%; object-fit: cover; border-radius: 8px; }
.member .info { padding: 18px; }
.member .info .role {
  font-family: var(--mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: 0.16em; color: var(--accent); margin-bottom: 6px;
}
.member .info .name { font: 600 16px/1.3 var(--display); color: var(--fg); }
.member .info .org { font-size: 12px; color: var(--muted); margin-top: 8px; line-height: 1.5; }

/* ===== Updates / News / Papers list ===== */
.update-card {
  background: var(--bg); border: 1px solid var(--border); border-radius: 14px; padding: 28px;
}
.update-card .head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--border);
}
.update-card .head h4 { font: 600 18px var(--display); color: var(--fg); }
.update-card .head h4 small { color: var(--muted); font-weight: 400; margin-left: 6px; }
.update-card .head .more {
  font-family: var(--mono); font-size: 11px; color: var(--accent);
  text-transform: uppercase; letter-spacing: 0.14em;
}
.update-card .item {
  display: block; padding: 18px 0; border-top: 1px solid var(--border);
  transition: padding 0.15s;
}
.update-card .item:first-of-type { border-top: 0; padding-top: 0; }
.update-card .item:hover .title { color: var(--accent); }
.update-card .item .meta {
  display: flex; gap: 12px; font-family: var(--mono); font-size: 10px; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.14em; margin-bottom: 8px;
  flex-wrap: wrap;
}
.update-card .item .meta .pill {
  color: var(--accent); padding: 2px 8px; border: 1px solid var(--accent-line);
  border-radius: 4px; background: var(--accent-soft);
}
.update-card .item .meta .date { color: var(--muted-2); }
.update-card .item .title {
  font: 500 15px/1.4 var(--display); color: var(--fg);
  transition: color 0.15s;
}
.update-card .item .desc {
  font-size: 13px; color: var(--muted); margin-top: 6px; line-height: 1.5;
}

/* ===== Long-form list (news / papers full pages) ===== */
.list-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.list-item {
  display: grid; grid-template-columns: 110px 1fr; gap: 32px;
  padding: 28px; background: var(--bg);
  border: 1px solid var(--border); border-radius: 14px;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}
.list-item:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
.list-item .date {
  font-family: var(--mono); font-size: 11px; color: var(--muted-2);
  text-transform: uppercase; letter-spacing: 0.14em; padding-top: 4px;
}
.list-item .date b { display: block; font: 600 28px/1 var(--display); color: var(--fg); margin-top: 6px; letter-spacing: -0.02em; }
.list-item .meta {
  font-family: var(--mono); font-size: 10px; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.14em; margin-bottom: 8px;
  display: flex; gap: 12px; flex-wrap: wrap;
}
.list-item .meta .pill {
  color: var(--accent); padding: 2px 8px; border: 1px solid var(--accent-line);
  border-radius: 4px; background: var(--accent-soft);
}
.list-item h3 {
  font: 600 20px/1.4 var(--display); color: var(--fg); margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.list-item p { font-size: 14px; color: var(--muted); line-height: 1.6; }
.list-item .ctas { display: flex; gap: 12px; margin-top: 14px; }
.list-item .ctas a {
  font-family: var(--mono); font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.14em; color: var(--accent); display: inline-flex; align-items: center; gap: 4px;
}
.list-item .ctas a:hover { color: var(--accent-2); }

/* ===== Filter pills (for news/papers) ===== */
.filter-bar {
  display: flex; gap: 8px; margin-bottom: 32px; flex-wrap: wrap;
}
.filter-bar button {
  padding: 8px 16px; border: 1px solid var(--border); border-radius: 999px;
  background: #fff; color: var(--muted); font: 500 13px var(--display);
  transition: all 0.15s;
}
.filter-bar button:hover { color: var(--fg); border-color: var(--border-strong); }
.filter-bar button.on { background: var(--fg); color: #fff; border-color: var(--fg); }

/* ===== Contact band ===== */
.contact-band {
  background: var(--paper); border: 1px solid var(--border); border-radius: 20px;
  padding: 64px; display: grid; grid-template-columns: 1.2fr 1fr; gap: 64px; align-items: start;
}
.contact-band h3 {
  font: 600 40px/1.15 var(--display); letter-spacing: -0.02em; color: var(--fg); margin-bottom: 16px;
}
.contact-band p { color: var(--muted); margin-bottom: 24px; }
.contact-band .meta { display: grid; gap: 12px; }
.contact-band .meta .row {
  display: flex; gap: 16px; align-items: baseline; font-size: 14px;
  padding: 10px 0; border-top: 1px solid var(--border);
}
.contact-band .meta .row:last-child { border-bottom: 1px solid var(--border); }
.contact-band .meta .row .k {
  font-family: var(--mono); font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.14em; color: var(--muted); min-width: 80px;
}
.contact-band .meta .row .v { color: var(--fg); font-weight: 500; }

.contact-form { display: grid; gap: 12px; }
.contact-form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.contact-form input, .contact-form textarea, .contact-form select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--bg); font: 14px var(--body); color: var(--fg);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.contact-form input:focus, .contact-form textarea:focus, .contact-form select:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(180, 83, 9, 0.1);
}
.contact-form textarea { min-height: 120px; resize: vertical; font-family: inherit; }
.contact-form .submit {
  background: var(--accent); color: #fff; padding: 14px 22px; border-radius: 8px; border: 0;
  font: 500 14px var(--display); cursor: pointer; justify-self: start;
  transition: background 0.15s;
}
.contact-form .submit:hover { background: var(--accent-2); }
.contact-form .submit:disabled { opacity: 0.6; cursor: default; }
.form-success {
  display: none; padding: 14px 18px; border-radius: 8px;
  background: rgba(15, 118, 110, 0.08); color: var(--positive);
  font: 500 14px var(--display);
}
.form-success.show { display: block; }

/* ===== Footer ===== */
footer {
  background: var(--fg); color: rgba(255, 255, 255, 0.7);
  padding: 72px 0 32px;
}
.foot-grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 56px;
}
.foot-grid h5 {
  font-family: var(--mono); font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.18em; color: rgba(255, 255, 255, 0.5); margin-bottom: 20px;
}
.foot-grid ul { list-style: none; }
.foot-grid li { padding: 6px 0; font-size: 14px; }
.foot-grid a:hover { color: var(--accent-3); }
.foot-grid .brand .name { font: 600 20px var(--display); color: #fff; }
.foot-grid .brand .cn { font-size: 14px; color: rgba(255, 255, 255, 0.6); margin-top: 2px; }
.foot-grid .brand p {
  font-size: 13px; color: rgba(255, 255, 255, 0.5); margin-top: 16px;
  max-width: 320px; line-height: 1.6;
}
.foot-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 24px; border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-family: var(--mono); font-size: 11px; color: rgba(255, 255, 255, 0.4);
  flex-wrap: wrap; gap: 12px;
}
.foot-bottom .badges { display: flex; gap: 12px; flex-wrap: wrap; }
.foot-bottom .badges span {
  padding: 4px 8px; border: 1px solid rgba(255, 255, 255, 0.15); border-radius: 4px;
}

/* ===== Generic page header (sub-pages) ===== */
.page-head {
  padding: 72px 0 56px;
  background: linear-gradient(180deg, var(--paper) 0%, #fff 100%);
  border-bottom: 1px solid var(--border);
  position: relative; overflow: hidden;
}
.page-head::before {
  content: ""; position: absolute; right: -150px; top: -150px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, oklch(95% 0.04 60) 0%, transparent 70%);
  pointer-events: none;
}
.page-head .crumbs {
  font-family: var(--mono); font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.18em; color: var(--muted-2); margin-bottom: 24px;
  position: relative;
}
.page-head .crumbs a { color: var(--accent); }
.page-head h1 {
  font: 600 56px/1.05 var(--display); letter-spacing: -0.025em; color: var(--fg);
  margin-bottom: 20px; max-width: 920px; position: relative;
}
.page-head h1 .accent { color: var(--accent); }
.page-head p {
  font-size: 18px; line-height: 1.6; color: var(--muted);
  max-width: 720px; position: relative;
}
.page-head .meta-strip {
  display: flex; gap: 24px; margin-top: 32px; padding-top: 24px;
  border-top: 1px solid var(--border); position: relative; flex-wrap: wrap;
}
.page-head .meta-strip .item {
  display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted);
}
.page-head .meta-strip .item i {
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
}

/* ===== Misc ===== */
.callout-strip {
  display: flex; align-items: center; gap: 16px;
  padding: 16px 20px; border-radius: var(--radius);
  background: var(--accent-soft); border: 1px solid var(--accent-line);
  color: var(--fg); font-size: 14px; margin-top: 32px;
}
.callout-strip b { color: var(--accent); }
.callout-strip i.dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--accent);
  flex-shrink: 0;
}
.pill-row { display: flex; gap: 8px; flex-wrap: wrap; }
.pill-row .pill {
  padding: 4px 10px; border: 1px solid var(--border); border-radius: 999px;
  font-family: var(--mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: 0.12em; color: var(--muted); background: var(--bg);
}

/* ===== Image-with-caption ===== */
.figure {
  background: var(--paper); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; display: flex; flex-direction: column; gap: 12px;
}
.figure img { width: 100%; height: auto; border-radius: 6px; }
.figure .cap {
  font-family: var(--mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: 0.14em; color: var(--muted);
}

/* ===== Sensor-page molecule gallery ===== */
.molecule-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.molecule {
  border: 1px solid var(--border); border-radius: 14px; overflow: hidden;
  background: var(--bg); transition: border-color 0.2s, transform 0.2s;
}
.molecule:hover { border-color: var(--accent); transform: translateY(-2px); }
.molecule .img {
  aspect-ratio: 1/1; background: var(--paper);
  display: grid; place-items: center; padding: 24px;
}
.molecule .img img { max-width: 100%; max-height: 100%; object-fit: contain; }
.molecule .info { padding: 18px; }
.molecule .info .k {
  font-family: var(--mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: 0.14em; color: var(--accent); margin-bottom: 6px;
}
.molecule .info .name { font: 600 15px/1.3 var(--display); color: var(--fg); }
.molecule .info .org { font-size: 12px; color: var(--muted); margin-top: 6px; line-height: 1.5; }

/* ===== Numbers in spotlight ===== */
.spotlight {
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 64px; align-items: center;
}
.spotlight-img {
  background: var(--paper); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 32px; display: grid; place-items: center; overflow: hidden;
}
.spotlight-img img { max-width: 100%; height: auto; border-radius: 8px; }
.spotlight .nums { display: grid; grid-template-columns: 1fr 1fr; gap: 32px 24px; margin-top: 24px; }
.spotlight .nums .item .v {
  font: 600 38px/1 var(--display); letter-spacing: -0.02em; color: var(--fg);
}
.spotlight .nums .item .v .unit { font-size: 16px; color: var(--accent); margin-left: 4px; font-weight: 500; }
.spotlight .nums .item .k {
  font-size: 12px; color: var(--muted); margin-top: 8px; line-height: 1.4;
}

/* ===== Mobile / responsive ===== */
@media (max-width: 1024px) {
  .container { padding: 0 24px; }
  .nav { display: none; }
  .nav.mobile-open {
    display: flex; position: absolute; top: 72px; left: 0; right: 0;
    background: #fff; flex-direction: column; padding: 16px 24px;
    border-bottom: 1px solid var(--border); gap: 4px;
  }
  .nav.mobile-open a { padding: 10px 0; border-bottom: 1px solid var(--border); }
  .nav.mobile-open a:last-child { border-bottom: 0; }
  .menu-toggle { display: inline-flex !important; }

  .hero-grid, .sec-head, .products, .tech-grid, .update-card .head,
  .team-grid, .data-band, .sensor-row, .contact-band, .foot-grid,
  .spotlight, .molecule-grid, .list-item {
    grid-template-columns: 1fr;
  }
  .data-band { padding: 40px 28px; }
  .data-band .item .v { font-size: 38px; }
  .hero h1 { font-size: 42px; }
  .sec-head h2 { font-size: 32px; }
  .page-head h1 { font-size: 40px; }
  .team-grid, .molecule-grid { grid-template-columns: repeat(2, 1fr); }
  .topbar-right .cta { display: none; }
}
@media (max-width: 640px) {
  .container { padding: 0 20px; }
  .topbar-inner { gap: 16px; }
  .brand .cn, .brand .en { display: none; }
  .hero { padding: 48px 0 56px; }
  .hero h1 { font-size: 32px; }
  .page-head h1 { font-size: 30px; }
  .sec-head h2 { font-size: 26px; }
  section { padding: 64px 0; }
  .contact-band, .contact-form .row { padding: 32px; }
  .product { padding: 24px; }
  .product h3 { font-size: 24px; }
  .data-band { padding: 32px 20px; }
  .data-band .item .v { font-size: 30px; }
  .team-grid, .molecule-grid { grid-template-columns: 1fr; }
  .foot-grid { gap: 32px; }
  .list-item { padding: 20px; gap: 20px; }
  .list-item .date b { font-size: 22px; }
}
.menu-toggle {
  display: none; width: 40px; height: 40px; border-radius: 8px;
  align-items: center; justify-content: center; background: var(--paper);
  margin-left: auto;
}
.menu-toggle span, .menu-toggle span::before, .menu-toggle span::after {
  content: ""; display: block; width: 18px; height: 1.5px; background: var(--fg);
  position: relative; transition: all 0.2s;
}
.menu-toggle span::before { position: absolute; top: -6px; }
.menu-toggle span::after { position: absolute; top: 6px; }