/* ==========================================================================
   嘉兴元贝智能设备有限公司 — 官网样式
   设计系统：白底 + 墨蓝文字 + 品牌橙红（取自企业标识）+ 体征青蓝辅助色
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  --ink:        #0B1622;
  --ink-2:      #1B2C3E;
  --muted:      #5B7186;
  --muted-2:    #8698A9;
  --line:       #E4EAF1;
  --line-2:     #EFF3F8;
  --bg:         #FFFFFF;
  --bg-soft:    #F6F8FB;

  --brand:      #E4472B;
  --brand-600:  #C93A21;
  --brand-700:  #A82E19;
  --brand-soft: #FFF2EE;
  --brand-line: #FBD9CF;
  --brand-grad: linear-gradient(120deg, #F4703F 0%, #DC3A1E 55%, #C32F16 100%);

  --cyan:       #17A2B8;
  --cyan-soft:  #E8F6F9;

  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 30px;

  --sh-1: 0 1px 2px rgba(11,22,34,.04), 0 4px 14px rgba(11,22,34,.045);
  --sh-2: 0 2px 6px rgba(11,22,34,.05), 0 18px 44px rgba(11,22,34,.08);
  --sh-brand: 0 8px 26px rgba(228,71,43,.28);

  --wrap: 1200px;
  --gutter: 28px;

  --ease: cubic-bezier(.22,.61,.36,1);
  --font: "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei",
          "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, h5 { margin: 0; color: var(--ink); font-weight: 700; line-height: 1.22; letter-spacing: -.01em; }
p { margin: 0; }
ul, ol, dl, dd, dt, figure, figcaption { margin: 0; padding: 0; }
li { list-style: none; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; border-radius: 4px; }

/* ---------- Layout helpers ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }

.section { padding: 108px 0; }
.section-soft { background: var(--bg-soft); }

.section-head { max-width: 760px; margin-bottom: 56px; }
.section-head h2,
.quality-copy h2,
.about-copy h2,
.contact-copy h2 {
  font-size: clamp(28px, 3.4vw, 42px);
  letter-spacing: -.02em;
}
.section-head h2::after,
.quality-copy h2::after,
.about-copy h2::after,
.contact-copy h2::after {
  content: "";
  display: block;
  width: 48px; height: 3px;
  margin-top: 20px;
  border-radius: 3px;
  background: var(--brand-grad);
}
.lead { margin-top: 22px; color: var(--muted); font-size: 17px; }

.grad-text {
  background: var(--brand-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 15px; font-weight: 600; line-height: 1;
  padding: 14px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease),
              background-color .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
  white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; flex: none; }
.btn-primary { background: var(--brand-grad); color: #fff; box-shadow: var(--sh-brand); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(228,71,43,.36); }
.btn-outline { border-color: var(--line); background: #fff; color: var(--ink); }
.btn-outline:hover { border-color: var(--brand); color: var(--brand-600); transform: translateY(-2px); }
.btn-ghost { color: var(--ink); background: transparent; padding: 12px 16px; font-weight: 600; }
.btn-ghost:hover { color: var(--brand-600); background: var(--brand-soft); }
.btn-lg { padding: 16px 30px; font-size: 16px; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 90;
  background: rgba(255,255,255,.82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease), background-color .3s var(--ease);
}
.site-header.is-stuck { border-bottom-color: var(--line); box-shadow: 0 6px 24px rgba(11,22,34,.05); }
.header-inner { display: flex; align-items: center; gap: 24px; height: 74px; }

.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; }
.brand-mark { width: 40px; height: 40px; display: block; flex: none; }
.brand-mark svg { width: 100%; height: 100%; display: block; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 17px; font-weight: 800; color: var(--ink); letter-spacing: .01em; }
.brand-text em {
  font-style: normal; font-size: 10px; letter-spacing: .18em;
  color: var(--muted-2); font-weight: 600; text-transform: uppercase;
}

.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a {
  position: relative;
  font-size: 15px; font-weight: 500; color: var(--ink-2);
  padding: 9px 14px; border-radius: 999px;
  transition: color .22s var(--ease), background-color .22s var(--ease);
}
.nav a::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 3px; height: 2px;
  border-radius: 2px; background: var(--brand-grad);
  transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease);
}
.nav a:hover { color: var(--brand-600); }
.nav a:hover::after { transform: scaleX(1); }
.nav a.is-active { color: var(--brand-600); }
.nav a.is-active::after { transform: scaleX(1); }

.header-actions { display: flex; align-items: center; gap: 6px; margin-left: 8px; }
.phone-link { border: 1px solid var(--line); border-radius: 999px; }
.phone-link:hover { border-color: var(--brand-line); }

.nav-toggle {
  display: none; width: 42px; height: 42px; border: 1px solid var(--line);
  background: #fff; border-radius: 12px; cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 4px;
}
.nav-toggle span { width: 17px; height: 1.8px; background: var(--ink); border-radius: 2px; transition: transform .3s var(--ease), opacity .2s var(--ease); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.8px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 150px 0 72px; overflow: hidden; }
.hero-glow {
  position: absolute; inset: -200px -10% auto -10%; height: 720px; pointer-events: none;
  background:
    radial-gradient(560px 360px at 78% 18%, rgba(228,71,43,.10), transparent 70%),
    radial-gradient(520px 380px at 12% 6%, rgba(23,162,184,.09), transparent 72%);
}
.hero-grid {
  position: relative;
  display: grid; grid-template-columns: 1.06fr .94fr; gap: 68px; align-items: center;
}
.hero-copy h1 {
  font-size: clamp(34px, 5vw, 62px);
  line-height: 1.14; letter-spacing: -.03em; font-weight: 800;
}
.hero-sub {
  margin-top: 26px; max-width: 560px;
  font-size: 16.5px; color: var(--muted); line-height: 1.85;
}
.hero-sub strong { color: var(--ink); font-weight: 700; }

.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

.hero-pillars {
  display: grid; grid-template-columns: repeat(3, auto); gap: 14px 34px;
  margin-top: 46px; padding-top: 30px; border-top: 1px solid var(--line);
}
.hero-pillars li { display: flex; gap: 11px; align-items: flex-start; }
.pillar-dot {
  width: 8px; height: 8px; margin-top: 8px; border-radius: 50%; flex: none;
  background: var(--brand-grad); box-shadow: 0 0 0 4px var(--brand-soft);
}
.hero-pillars b { display: block; font-size: 15px; color: var(--ink); font-weight: 700; }
.hero-pillars small { display: block; font-size: 13px; color: var(--muted-2); line-height: 1.6; }

.hero-visual { position: relative; }
.hero-frame {
  position: relative; overflow: hidden;
  border-radius: var(--r-xl);
  box-shadow: var(--sh-2);
  background: var(--bg-soft);
  aspect-ratio: 4 / 3.15;
}
.hero-frame img { width: 100%; height: 100%; object-fit: cover; }
.hero-frame-tag {
  position: absolute; left: 18px; top: 18px;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 16px; border-radius: 999px;
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  font-size: 13px; font-weight: 600; color: var(--ink);
  box-shadow: var(--sh-1);
}
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--brand); animation: livePulse 2s infinite; }
@keyframes livePulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(228,71,43,.45); }
  70%     { box-shadow: 0 0 0 9px rgba(228,71,43,0); }
}

.vitals-card {
  position: relative; z-index: 2;
  margin: -52px 0 0 auto; width: min(360px, 92%);
  padding: 20px 20px 16px;
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-2);
}
.vitals-head {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 12.5px; font-weight: 600; color: var(--muted);
  letter-spacing: .04em; margin-bottom: 14px;
}
.vitals-live { display: inline-flex; align-items: center; gap: 6px; color: var(--brand-600); }
.vitals-live i { width: 7px; height: 7px; border-radius: 50%; background: var(--brand); animation: livePulse 2s infinite; }
.wave-row { display: flex; align-items: center; gap: 12px; padding: 6px 0; }
.wave-label {
  flex: none; width: 34px; font-size: 12px; font-weight: 700; color: var(--muted-2);
  letter-spacing: .06em;
}
.wave-row canvas { width: 100%; height: 42px; display: block; }
.vitals-note { margin-top: 10px; font-size: 11.5px; line-height: 1.6; color: var(--muted-2); }

/* ---------- Tech ---------- */
.tech-layout { display: grid; grid-template-columns: 1.05fr .95fr; gap: 64px; align-items: center; }
.tech-steps { display: grid; gap: 8px; }
.tech-steps li {
  display: flex; gap: 20px;
  padding: 22px 22px 22px 20px;
  border-radius: var(--r-md);
  border: 1px solid transparent;
  transition: background-color .3s var(--ease), border-color .3s var(--ease), transform .3s var(--ease);
}
.tech-steps li:hover { background: #fff; border-color: var(--line); transform: translateX(4px); box-shadow: var(--sh-1); }
.step-no {
  flex: none; width: 46px; height: 46px; border-radius: 14px;
  display: grid; place-items: center;
  background: var(--brand-soft); color: var(--brand-600);
  font-size: 15px; font-weight: 800; letter-spacing: .02em;
}
.tech-steps h3 { font-size: 18px; margin-bottom: 7px; }
.tech-steps p { font-size: 14.5px; color: var(--muted); line-height: 1.8; }

.radar-panel {
  position: relative; aspect-ratio: 1 / 1;
  border-radius: var(--r-xl);
  background:
    radial-gradient(circle at 50% 50%, #fff 0%, #FbfcFe 55%, var(--bg-soft) 100%);
  border: 1px solid var(--line);
  box-shadow: var(--sh-1);
  overflow: hidden;
}
.radar-panel canvas { width: 100%; height: 100%; display: block; }
.radar-legend {
  position: absolute; left: 0; right: 0; bottom: 20px;
  display: flex; justify-content: center; gap: 24px;
  font-size: 12px; font-weight: 600; color: var(--muted);
}
.radar-legend span { display: inline-flex; align-items: center; gap: 7px; }
.radar-legend i { width: 8px; height: 8px; border-radius: 50%; }
.dot-1 { background: var(--brand); }
.dot-2 { background: var(--cyan); }
.dot-3 { background: #F5A524; }

/* ---------- Products ---------- */
.product-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.product {
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--r-lg); overflow: hidden;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}
.product:hover { transform: translateY(-6px); box-shadow: var(--sh-2); border-color: #DCE4ED; }
.product-media { aspect-ratio: 4 / 3; background: var(--bg-soft); overflow: hidden; }
.product-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.product:hover .product-media img { transform: scale(1.045); }
.product-body { padding: 26px 26px 30px; display: flex; flex-direction: column; flex: 1; }
.product-tag {
  align-self: flex-start;
  font-size: 12px; font-weight: 700; letter-spacing: .06em;
  color: var(--brand-600); background: var(--brand-soft);
  padding: 5px 12px; border-radius: 999px; margin-bottom: 14px;
}
.product-body h3 { font-size: 21px; margin-bottom: 10px; }
.product-body > p { font-size: 14.5px; color: var(--muted); line-height: 1.8; }
.tick-list { margin-top: 18px; display: grid; gap: 10px; }
.tick-list li {
  position: relative; padding-left: 24px;
  font-size: 14px; color: var(--ink-2);
}
.tick-list li::before {
  content: ""; position: absolute; left: 4px; top: 8px;
  width: 11px; height: 6px;
  border-left: 2px solid var(--brand); border-bottom: 2px solid var(--brand);
  transform: rotate(-45deg); border-radius: 1px;
}
.note-strip {
  margin-top: 34px; padding: 16px 22px;
  background: #fff; border: 1px dashed var(--brand-line); border-radius: var(--r-md);
  font-size: 13.5px; color: var(--muted); text-align: center;
}

/* ---------- Advantages ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; }
.adv { background: #fff; padding: 34px 28px 38px; transition: background-color .3s var(--ease); }
.adv:hover { background: #FCFDFE; }
.adv-ico {
  display: grid; place-items: center; width: 50px; height: 50px; border-radius: 15px;
  background: var(--brand-soft); color: var(--brand-600); margin-bottom: 22px;
}
.adv-ico svg { width: 24px; height: 24px; }
.adv h3 { font-size: 18px; margin-bottom: 10px; }
.adv p { font-size: 14.5px; color: var(--muted); line-height: 1.8; }

/* ---------- Solutions ---------- */
.scene-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.scene {
  position: relative; overflow: hidden;
  border-radius: var(--r-lg); background: var(--ink);
  isolation: isolate;
}
.scene-wide { grid-column: 1 / -1; }
.scene img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease); }
.scene-wide img { aspect-ratio: 16 / 7; }
.scene:not(.scene-wide) img { aspect-ratio: 4 / 3.1; }
.scene:hover img { transform: scale(1.05); }
.scene::after {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(to top, rgba(8,17,28,.86) 0%, rgba(8,17,28,.52) 38%, rgba(8,17,28,.06) 72%);
}
.scene-body {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 2;
  padding: 32px 34px;
}
.scene-body h3 { color: #fff; font-size: 22px; margin-bottom: 9px; }
.scene-body p { color: rgba(255,255,255,.82); font-size: 14.5px; line-height: 1.78; max-width: 620px; }

/* ---------- Quality ---------- */
.quality-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.quality-media { border-radius: var(--r-xl); overflow: hidden; box-shadow: var(--sh-2); }
.quality-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.quality-copy > p { margin-top: 24px; color: var(--muted); font-size: 16px; line-height: 1.9; }
.quality-items { display: grid; gap: 22px; margin-top: 36px; padding-top: 32px; border-top: 1px solid var(--line); }
.quality-items h4 { font-size: 16px; margin-bottom: 6px; }
.quality-items h4::before {
  content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%;
  background: var(--brand-grad); margin-right: 10px; vertical-align: middle;
}
.quality-items p { font-size: 14.5px; color: var(--muted); line-height: 1.8; }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 64px; align-items: start; }
.about-lead { margin-top: 26px; font-size: 18px; color: var(--ink); font-weight: 600; line-height: 1.75; }
.about-copy > p + p { margin-top: 18px; color: var(--muted); font-size: 15.5px; line-height: 1.9; }
.about-copy > p:not(.about-lead) { margin-top: 18px; color: var(--muted); font-size: 15.5px; line-height: 1.9; }

.about-facts {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
  margin-top: 38px; background: var(--line);
  border: 1px solid var(--line); border-radius: var(--r-md); overflow: hidden;
}
.about-facts > div { background: #fff; padding: 18px 22px; }
.about-facts dt { font-size: 12.5px; color: var(--muted-2); letter-spacing: .05em; margin-bottom: 5px; }
.about-facts dd { font-size: 15px; color: var(--ink); font-weight: 700; }

.about-media {
  border-radius: var(--r-lg); overflow: hidden;
  background: #fff; border: 1px solid var(--line); box-shadow: var(--sh-2);
}
.about-media img { width: 100%; aspect-ratio: 4 / 3.2; object-fit: cover; }
.about-media figcaption { padding: 14px 20px 16px; font-size: 12.5px; color: var(--muted-2); line-height: 1.6; }

/* ---------- Contact ---------- */
.contact { background: var(--bg); border-top: 1px solid var(--line); }
.contact-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 64px; align-items: center; }
.contact-lead { margin-top: 24px; color: var(--muted); font-size: 16px; }

.contact-list { display: grid; gap: 4px; margin: 34px 0 32px; }
.contact-list li { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line-2); }
.contact-list li:first-child { border-top: 1px solid var(--line-2); }
.c-ico {
  flex: none; display: grid; place-items: center; width: 44px; height: 44px;
  border-radius: 13px; background: var(--brand-soft); color: var(--brand-600);
}
.c-ico svg { width: 21px; height: 21px; }
.contact-list small { display: block; font-size: 12.5px; color: var(--muted-2); letter-spacing: .05em; margin-bottom: 3px; }
.contact-list a { font-size: 23px; font-weight: 800; color: var(--ink); letter-spacing: .01em; }
.contact-list a:hover { color: var(--brand-600); }
.contact-list p { font-size: 15.5px; color: var(--ink-2); line-height: 1.65; }
.c-person { margin-left: 10px; font-size: 14px; color: var(--muted); }

.map-card {
  position: relative; aspect-ratio: 1 / .92;
  border-radius: var(--r-xl); overflow: hidden;
  background: linear-gradient(160deg, #101E2E 0%, #16293C 60%, #0E1B29 100%);
  box-shadow: var(--sh-2);
}
.map-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(circle at 50% 45%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 45%, #000 20%, transparent 78%);
}
.map-grid::after {
  content: ""; position: absolute; left: -10%; top: 52%; width: 120%; height: 2px;
  background: linear-gradient(90deg, transparent, rgba(228,71,43,.5), transparent);
  transform: rotate(-11deg);
}
.map-pin { position: absolute; left: 50%; top: 45%; transform: translate(-50%,-50%); }
.map-pin-dot {
  position: relative; z-index: 2; display: block; width: 14px; height: 14px; border-radius: 50%;
  background: var(--brand); box-shadow: 0 0 0 5px rgba(228,71,43,.22);
}
.map-pin-pulse {
  position: absolute; left: 50%; top: 50%; width: 14px; height: 14px; margin: -7px 0 0 -7px;
  border-radius: 50%; background: rgba(228,71,43,.35); animation: mapPulse 2.6s infinite;
}
@keyframes mapPulse {
  0%   { transform: scale(1); opacity: .8; }
  100% { transform: scale(6); opacity: 0; }
}
.map-label {
  position: absolute; left: 22px; right: 22px; bottom: 22px;
  padding: 16px 20px; border-radius: var(--r-md);
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.14);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.map-label strong { display: block; color: #fff; font-size: 15px; margin-bottom: 5px; }
.map-label span { display: block; color: rgba(255,255,255,.62); font-size: 12.5px; line-height: 1.6; }

/* ---------- Footer ---------- */
.site-footer { background: #0B1622; color: rgba(255,255,255,.66); padding: 72px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr .8fr 1fr; gap: 48px; padding-bottom: 56px; }
.brand-foot { margin-bottom: 18px; }
.brand-foot .brand-text strong { color: #fff; font-size: 16px; }
.brand-foot .brand-text em { color: rgba(255,255,255,.42); }
.footer-brand > p { font-size: 14px; line-height: 1.8; max-width: 340px; }
.footer-nav, .footer-contact { display: flex; flex-direction: column; gap: 10px; }
.footer-nav h5, .footer-contact h5 {
  color: #fff; font-size: 13px; letter-spacing: .1em; margin-bottom: 8px; font-weight: 700;
}
.footer-nav a { font-size: 14.5px; color: rgba(255,255,255,.66); transition: color .22s var(--ease); width: fit-content; }
.footer-nav a:hover { color: #fff; }
.footer-contact p { font-size: 14.5px; line-height: 1.8; }
.footer-contact a { color: #fff; font-weight: 700; font-size: 16px; }
.footer-contact a:hover { color: #F0703F; }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding-top: 24px; padding-bottom: 28px;
  border-top: 1px solid rgba(255,255,255,.1);
  font-size: 12.5px; color: rgba(255,255,255,.45);
}

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .nav { display: none; }
  .nav-toggle { display: flex; }
  .header-actions { margin-left: auto; }
  .nav.is-open {
    display: flex; flex-direction: column; align-items: stretch; gap: 2px;
    position: absolute; left: var(--gutter); right: var(--gutter); top: 74px;
    background: #fff; border: 1px solid var(--line); border-radius: var(--r-md);
    padding: 10px; box-shadow: var(--sh-2); margin-left: 0;
  }
  .nav.is-open a { padding: 13px 14px; border-radius: 10px; font-size: 15.5px; }
  .nav.is-open a::after { display: none; }
  .nav.is-open a:hover { background: var(--brand-soft); }

  .hero { padding: 124px 0 80px; }
  .hero-grid { grid-template-columns: 1fr; gap: 52px; }
  .hero-sub { max-width: none; }
  .hero-visual { max-width: 620px; }
  .vitals-card { margin-top: -44px; width: min(340px, 88%); margin-left: 0; }

  .tech-layout { grid-template-columns: 1fr; gap: 44px; }
  .radar-panel { max-width: 560px; margin-inline: auto; }

  .product-list { grid-template-columns: 1fr; gap: 24px; }
  .product { flex-direction: row; align-items: stretch; }
  .product-media { flex: 0 0 42%; aspect-ratio: auto; }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }

  .quality-grid, .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .quality-media, .about-media, .map-card { max-width: 640px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  :root { --gutter: 20px; }
  .section { padding: 76px 0; }
  .section-head { margin-bottom: 40px; }
  .phone-link span { display: none; }
  .phone-link { padding: 11px 13px; }

  .hero { padding: 106px 0 64px; }
  .hero-pillars { grid-template-columns: 1fr; gap: 16px; padding-top: 26px; }
  .hero-cta .btn { flex: 1 1 auto; justify-content: center; }
  .vitals-card { width: 100%; margin-top: -30px; }
  .hero-frame { aspect-ratio: 4 / 3.6; }

  .product { flex-direction: column; }
  .product-media { flex: none; aspect-ratio: 4 / 3; }
  .adv-grid { grid-template-columns: 1fr; }
  .adv { padding: 28px 24px 30px; }

  .scene-grid { grid-template-columns: 1fr; gap: 18px; }
  .scene-body { padding: 24px 24px; }
  .scene-body h3 { font-size: 19px; }

  .about-facts { grid-template-columns: 1fr; }
  .contact-list a { font-size: 21px; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; padding-bottom: 40px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
}