/* =========================================================
   丹纳计量 · 水表检定装置产品站
   Design system: ink / aqua / paper, technical editorial
   ========================================================= */

/* ---------- 1. Tokens ---------- */
:root {
  --ink: #08161e;
  --ink-2: #0c2029;
  --ink-3: #12303b;
  --paper: #f4f6f7;
  --paper-2: #eaeff1;
  --white: #ffffff;
  --aqua: #2ac1cf;
  --aqua-2: #7fe0e8;
  --teal: #0e7c88;
  --muted: #5e7178;
  --line: rgba(8, 22, 30, 0.11);
  --line-strong: rgba(8, 22, 30, 0.22);
  --d-line: rgba(255, 255, 255, 0.12);
  --d-muted: rgba(222, 235, 239, 0.66);
  --sans: "HarmonyOS Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --tech: "Bahnschrift", "DIN Alternate", "Segoe UI", sans-serif;
  --r-sm: 5px;
  --r-md: 14px;
  --r-lg: 20px;
  --shell: 1280px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
h1, h2, h3, h4, p, figure, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
::selection { background: var(--aqua); color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--aqua);
  outline-offset: 3px;
}

/* ---------- 3. Layout helpers ---------- */
.shell {
  width: min(100% - 80px, var(--shell));
  margin-inline: auto;
}

.section { padding: 108px 0; }
.section--tight { padding: 78px 0; }
.section--paper2 { background: var(--paper-2); }
.section--white { background: var(--white); }
.section--dark { background: var(--ink); color: var(--white); }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--tech);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: 0.55;
}
.section--dark .eyebrow { color: rgba(143, 205, 214, 0.85); }

.section-head {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 56px;
  align-items: end;
  margin-bottom: 54px;
}
.section-head h2 {
  margin-top: 20px;
  font-size: clamp(32px, 4.1vw, 54px);
  line-height: 1.14;
  letter-spacing: -0.025em;
  font-weight: 600;
}
.section-lead {
  justify-self: end;
  max-width: 430px;
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--muted);
}
.section--dark .section-lead { color: var(--d-muted); }

/* ---------- 4. Buttons & links ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background 0.3s var(--ease), color 0.3s var(--ease),
    border-color 0.3s var(--ease), transform 0.3s var(--ease);
}
.btn svg { width: 15px; height: 15px; }
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--aqua); color: #042027; }
.btn--primary:hover { background: #54d4df; }
.btn--ink { background: var(--ink); color: var(--white); }
.btn--ink:hover { background: var(--ink-3); }
.btn--ghost { border-color: var(--line-strong); color: var(--ink); }
.btn--ghost:hover { border-color: var(--ink); background: rgba(8, 22, 30, 0.04); }
.btn--light { background: var(--white); color: var(--ink); }
.btn--light:hover { background: var(--aqua-2); }
.btn--outline-light { border-color: rgba(255, 255, 255, 0.3); color: var(--white); }
.btn--outline-light:hover { border-color: rgba(255, 255, 255, 0.7); background: rgba(255, 255, 255, 0.06); }
.btn--sm { padding: 11px 18px; font-size: 13px; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--teal);
}
.link-arrow svg { width: 15px; height: 15px; transition: transform 0.3s var(--ease); }
.link-arrow:hover svg { transform: translateX(4px); }

/* ---------- 5. Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: flex;
  align-items: center;
  height: 86px;
  color: var(--white);
  border-bottom: 1px solid transparent;
  transition: background 0.4s var(--ease), color 0.4s var(--ease),
    border-color 0.4s var(--ease), height 0.4s var(--ease);
}
.site-header.is-solid {
  height: 76px;
  color: var(--ink);
  background: rgba(244, 246, 247, 0.9);
  -webkit-backdrop-filter: blur(18px) saturate(1.1);
  backdrop-filter: blur(18px) saturate(1.1);
  border-bottom-color: var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.brand { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.brand-logo { display: block; height: 44px; width: auto; flex: 0 0 auto; }
.brand-logo--primary { display: none; }
.site-header.is-solid .brand-logo--reversed { display: none; }
.site-header.is-solid .brand-logo--primary { display: block; }
body.menu-open .site-header .brand-logo--reversed { display: block; }
body.menu-open .site-header .brand-logo--primary { display: none; }
.brand-text { --brand-size: 16px; display: flex; flex-direction: column; line-height: 1; }
.brand-cn { font-size: var(--brand-size); font-weight: 600; letter-spacing: 0.07em; }
.brand-en {
  margin-top: 5px;
  margin-right: -0.357em;
  font-family: var(--tech);
  font-size: calc(var(--brand-size) * 0.6875);
  letter-spacing: 0.357em;
  opacity: 0.62;
}
.nav { display: flex; align-items: center; gap: 36px; }
.nav a {
  position: relative;
  padding: 8px 0;
  font-size: 14px;
  opacity: 0.76;
  transition: opacity 0.25s;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 0;
  height: 1px;
  background: var(--aqua);
  transition: width 0.3s var(--ease);
}
.nav a:hover,
.nav a[aria-current="page"] { opacity: 1; }
.nav a:hover::after,
.nav a[aria-current="page"]::after { width: 100%; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid currentColor;
  border-radius: var(--r-sm);
  background: transparent;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-toggle span {
  position: relative;
  display: block;
  width: 17px;
  height: 1px;
  background: currentColor;
  transition: transform 0.3s;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 17px;
  height: 1px;
  background: currentColor;
  transition: transform 0.3s;
}
.nav-toggle span::before { top: -5px; }
.nav-toggle span::after { top: 5px; }

/* mobile menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  padding: 110px 40px 50px;
  background: var(--ink);
  color: var(--white);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s var(--ease), visibility 0.35s;
}
.mobile-menu a {
  padding: 14px 0;
  border-bottom: 1px solid var(--d-line);
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.mobile-menu a small {
  display: block;
  margin-top: 2px;
  font-family: var(--tech);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--d-muted);
}
.mobile-menu .mobile-cta { margin-top: 30px; border: 0; padding: 0; }
body.menu-open .mobile-menu { opacity: 1; visibility: visible; }
body.menu-open { overflow: hidden; }
body.menu-open .nav-toggle span { background: transparent; }
body.menu-open .nav-toggle span::before { transform: translateY(5px) rotate(45deg); }
body.menu-open .nav-toggle span::after { transform: translateY(-5px) rotate(-45deg); }
body.menu-open .site-header { color: var(--white); background: transparent; border-color: transparent; }
body.menu-open .site-header.is-solid { background: transparent; }

/* ---------- 6. Hero ---------- */
.hero {
  position: relative;
  padding: 158px 0 0;
  overflow: hidden;
  background: var(--ink);
  color: var(--white);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 10%, #000 10%, transparent 72%);
  mask-image: radial-gradient(ellipse at 50% 10%, #000 10%, transparent 72%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  top: -360px;
  right: -220px;
  width: 980px;
  height: 980px;
  background: radial-gradient(circle, rgba(42, 193, 207, 0.17), transparent 62%);
  pointer-events: none;
}
.hero .shell { position: relative; z-index: 2; }
.hero-top {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 64px;
  align-items: end;
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: var(--tech);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--aqua);
  text-transform: uppercase;
}
.hero-kicker::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--aqua);
  opacity: 0.6;
}
.hero-title {
  margin-top: 24px;
  font-size: clamp(40px, 6.3vw, 86px);
  line-height: 1.04;
  font-weight: 600;
  letter-spacing: -0.03em;
}
.hero-title .cn-product {
  display: block;
  margin-bottom: 14px;
  font-size: 0.28em;
  font-weight: 400;
  letter-spacing: 0.32em;
  color: rgba(255, 255, 255, 0.62);
}
.hero-title em {
  display: block;
  font-style: normal;
  color: var(--white);
}
.hero-title em i {
  font-style: normal;
  color: var(--aqua);
}
.hero-aside { padding-bottom: 8px; }
.hero-aside .lead {
  max-width: 430px;
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--d-muted);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 64px;
  border-top: 1px solid var(--d-line);
}
.stat {
  padding: 24px 26px 0 0;
  border-right: 1px solid var(--d-line);
}
.stat:last-child { border-right: 0; }
.stat b {
  display: block;
  font-family: var(--tech);
  font-size: clamp(30px, 3.2vw, 42px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.005em;
  font-variant-numeric: tabular-nums;
}
.stat b em {
  font-style: normal;
  font-size: 0.52em;
  color: var(--aqua);
  margin-left: 3px;
}
.stat span {
  display: block;
  margin-top: 11px;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--d-muted);
}

.hero-visual {
  position: relative;
  margin-top: 54px;
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-bottom: 0;
  background: #c9d6e4;
}
.hero-visual img {
  width: 100%;
  height: clamp(300px, 36vw, 500px);
  object-fit: cover;
  object-position: center 46%;
}
.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 22, 30, 0.06) 40%, rgba(8, 22, 30, 0.42) 100%);
  pointer-events: none;
}
.hv-chips {
  position: absolute;
  left: 22px;
  bottom: 20px;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.hv-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 13px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 4px;
  background: rgba(6, 18, 24, 0.72);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  font-family: var(--tech);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.9);
}
.hv-chip--accent { color: var(--aqua-2); border-color: rgba(42, 193, 207, 0.4); }
.hv-caption {
  position: absolute;
  right: 26px;
  bottom: 22px;
  z-index: 2;
  font-family: var(--tech);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
}

/* ---------- 7. Trust strip ---------- */
.trust { background: var(--paper); border-bottom: 1px solid var(--line); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 26px 28px 26px 0;
  border-right: 1px solid var(--line);
}
.trust-item:last-child { border-right: 0; }
.trust-item b {
  font-family: var(--tech);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--teal);
  white-space: nowrap;
}
.trust-item span { font-size: 12.5px; color: var(--muted); line-height: 1.6; }

/* ---------- 8. Product cards ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.p-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--white);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease),
    border-color 0.45s var(--ease);
}
.p-card:hover {
  transform: translateY(-5px);
  border-color: rgba(14, 124, 136, 0.36);
  box-shadow: 0 28px 60px -34px rgba(8, 22, 30, 0.45);
}
.p-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #d5dfe7;
}
.p-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.9s var(--ease);
}
.p-card:hover .p-media img { transform: scale(1.04); }
.p-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 22, 30, 0.16), transparent 38%);
  pointer-events: none;
}
.p-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  padding: 5px 10px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  font-size: 10.5px;
  letter-spacing: 0.12em;
}
.p-tag--dark { background: rgba(6, 18, 24, 0.78); color: var(--white); }
.p-card > a { display: flex; flex-direction: column; height: 100%; }
.p-body { display: flex; flex-direction: column; flex: 1; padding: 22px 22px 24px; }
.p-model {
  font-family: var(--tech);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--teal);
  text-transform: uppercase;
}
.p-body h3 {
  margin-top: 9px;
  font-size: 19px;
  line-height: 1.4;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.p-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.p-chips span {
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: 3px;
  font-size: 10.5px;
  line-height: 1.5;
  color: var(--muted);
  white-space: nowrap;
}
.p-specs {
  display: flex;
  gap: 0;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.p-specs li {
  flex: 1;
  padding-right: 10px;
  min-width: 0;
}
.p-specs b {
  display: block;
  font-family: var(--tech);
  font-size: 13.5px;
  font-weight: 500;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.p-specs span {
  display: block;
  margin-top: 3px;
  font-size: 10.5px;
  color: var(--muted);
  white-space: nowrap;
}
.p-more {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 20px;
  font-size: 12.5px;
  color: var(--muted);
  transition: color 0.3s;
}
.p-more svg { width: 15px; height: 15px; transition: transform 0.3s var(--ease); }
.p-card:hover .p-more { color: var(--teal); }
.p-card:hover .p-more svg { transform: translateX(4px); }

.p-media--bp {
  display: grid;
  place-items: center;
  background: #0a1b23;
}
.p-media--bp svg { width: 100%; height: 100%; }
.p-media--bp::after { display: none; }

.section-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 46px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}
.section-foot .count {
  font-family: var(--tech);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

/* ---------- 9. Process ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.split-visual {
  position: relative;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
}
.split-visual img { width: 100%; height: auto; aspect-ratio: 4 / 3.4; object-fit: cover; }
.split-visual .float-card {
  position: absolute;
  left: 20px;
  bottom: 20px;
  padding: 16px 18px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: 0 20px 40px -20px rgba(8, 22, 30, 0.4);
}
.float-card b {
  display: block;
  font-family: var(--tech);
  font-size: 30px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.01em;
}
.float-card b em { font-style: normal; font-size: 0.45em; color: var(--teal); margin-left: 3px; }
.float-card span { display: block; margin-top: 6px; font-size: 11px; letter-spacing: 0.06em; color: var(--muted); }

.process-list { margin-top: 34px; }
.step {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 18px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}
.step:last-child { border-bottom: 1px solid var(--line); }
.step-index {
  font-family: var(--tech);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--teal);
  padding-top: 4px;
}
.step h3 { font-size: 18px; font-weight: 600; letter-spacing: -0.01em; }
.step p { margin-top: 5px; font-size: 13.8px; line-height: 1.75; color: var(--muted); }
.step .step-time {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 7px;
  border: 1px solid var(--line);
  border-radius: 3px;
  font-family: var(--tech);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--muted);
  vertical-align: 2px;
}

/* ---------- 10. Tech ---------- */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 56px;
  border: 1px solid var(--d-line);
  background: var(--d-line);
}
.tech-item {
  position: relative;
  padding: 34px 30px 40px;
  background: var(--ink);
  transition: background 0.4s var(--ease);
}
.tech-item::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--aqua);
  transition: width 0.5s var(--ease);
}
.tech-item:hover { background: #0b1f28; }
.tech-item:hover::after { width: 100%; }
.tech-item .num {
  font-family: var(--tech);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--aqua);
}
.tech-item h3 { margin-top: 22px; font-size: 18px; font-weight: 500; letter-spacing: -0.01em; }
.tech-item .en {
  display: block;
  margin-top: 5px;
  font-family: var(--tech);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(143, 205, 214, 0.7);
}
.tech-item p { margin-top: 16px; font-size: 13.5px; line-height: 1.8; color: var(--d-muted); }

/* ---------- 11. Selector ---------- */
.selector { display: grid; grid-template-columns: 0.82fr 1.18fr; gap: 72px; align-items: start; }
.selector-copy h2 {
  margin-top: 20px;
  font-size: clamp(32px, 3.8vw, 48px);
  line-height: 1.16;
  letter-spacing: -0.025em;
  font-weight: 600;
}
.selector-copy p { margin-top: 20px; max-width: 380px; font-size: 15px; color: var(--muted); line-height: 1.9; }
.selector-card {
  padding: 34px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: 0 30px 70px -50px rgba(8, 22, 30, 0.5);
}
.field { margin-bottom: 24px; }
.field-label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  font-family: var(--tech);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}
.field-label b {
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--white);
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0;
}
.seg { display: flex; flex-wrap: wrap; gap: 8px; }
.seg button {
  padding: 10px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  background: transparent;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.25s var(--ease);
}
.seg button:hover { border-color: var(--ink); }
.seg button[aria-pressed="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--white);
}
.selector-result {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 24px;
  align-items: center;
  margin-top: 8px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
.result-media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 6px;
  background: #d5dfe7;
}
.result-media img { width: 100%; height: 100%; object-fit: cover; }
.result-media--bp {
  display: grid;
  place-items: center;
  background: #0a1b23;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
}
.result-media--bp span {
  font-family: var(--tech);
  font-size: 15px;
  letter-spacing: 0.12em;
  color: var(--aqua);
  text-align: center;
  padding: 0 10px;
}
.result-body .r-model {
  font-family: var(--tech);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--teal);
}
.result-body h3 { margin-top: 6px; font-size: 17px; font-weight: 600; line-height: 1.4; }
.result-body .r-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}
.result-body .r-specs span {
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: 3px;
  font-size: 11px;
  color: var(--muted);
}
.result-body .link-arrow { margin-top: 14px; }

/* ---------- 12. About ---------- */
.about-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 80px; align-items: start; }
.about-statement {
  font-size: clamp(25px, 3.2vw, 40px);
  text-wrap: balance;
  line-height: 1.35;
  letter-spacing: -0.025em;
  font-weight: 600;
}
.about-statement em { font-style: normal; color: var(--teal); }
.about-copy { margin-top: 26px; font-size: 15px; line-height: 1.95; color: var(--muted); max-width: 520px; }
.about-copy + .about-copy { margin-top: 14px; }
.honor-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.honor {
  background: var(--paper);
  padding: 22px 20px 24px;
}
.section--white .honor { background: var(--white); }
.honor b {
  display: block;
  font-family: var(--tech);
  font-size: 34px;
  font-weight: 500;
  line-height: 1;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.honor b em { font-style: normal; font-size: 0.42em; color: var(--teal); margin-left: 2px; }
.honor span { display: block; margin-top: 9px; font-size: 11.5px; color: var(--muted); letter-spacing: 0.02em; }

.team { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 34px; }
.team-card { padding: 26px 24px; background: var(--white); }
.team-card h4 { font-size: 17px; font-weight: 600; }
.team-card .role { margin-top: 4px; font-family: var(--tech); font-size: 10.5px; letter-spacing: 0.1em; color: var(--teal); }
.team-card p { margin-top: 12px; font-size: 13px; line-height: 1.8; color: var(--muted); }

.partner-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  margin-top: 40px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.partner {
  flex: 1 1 auto;
  min-width: 150px;
  padding: 20px 22px;
  border-right: 1px solid var(--line);
}
.partner:last-child { border-right: 0; }
.partner b {
  display: block;
  font-family: var(--tech);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--ink);
}
.partner span { display: block; margin-top: 3px; font-size: 11px; color: var(--muted); }

/* ---------- 13. CTA ---------- */
.cta {
  position: relative;
  overflow: hidden;
  padding: 92px 0;
  background: var(--ink);
  color: var(--white);
}
.cta::before {
  content: "";
  position: absolute;
  right: -160px;
  bottom: -360px;
  width: 760px;
  height: 760px;
  background: radial-gradient(circle, rgba(42, 193, 207, 0.16), transparent 62%);
}
.cta-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}
.cta h2 {
  margin-top: 16px;
  font-size: clamp(28px, 3.6vw, 50px);
  line-height: 1.2;
  letter-spacing: -0.025em;
  font-weight: 600;
}
.cta p { margin-top: 16px; max-width: 520px; font-size: 14.5px; line-height: 1.85; color: var(--d-muted); }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: flex-end; }
.cta-phones { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 28px; justify-content: flex-end; }
.cta-phones div span { display: block; font-size: 10.5px; letter-spacing: 0.14em; color: var(--d-muted); }
.cta-phones div a {
  display: block;
  margin-top: 4px;
  font-family: var(--tech);
  font-size: 20px;
  letter-spacing: 0.04em;
  color: var(--white);
}
.cta-phones div a:hover { color: var(--aqua); }

/* ---------- 14. Footer ---------- */
.footer { padding: 72px 0 28px; background: #051017; color: var(--white); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 0.8fr 0.8fr 1.2fr; gap: 46px; }
.footer-brand p { margin-top: 20px; max-width: 320px; font-size: 13px; line-height: 1.9; color: rgba(255, 255, 255, 0.46); }
.footer h4 {
  margin-bottom: 18px;
  font-family: var(--tech);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.38);
}
.footer-links li + li { margin-top: 9px; }
.footer-links a { font-size: 13.5px; color: rgba(255, 255, 255, 0.72); transition: color 0.25s; }
.footer-links a:hover { color: var(--aqua); }
.footer-contact li { font-size: 13px; line-height: 1.8; color: rgba(255, 255, 255, 0.66); }
.footer-contact li + li { margin-top: 12px; }
.footer-contact b { display: block; font-weight: 500; color: rgba(255, 255, 255, 0.9); }
.footer-contact a:hover { color: var(--aqua); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 56px;
  padding-top: 22px;
  border-top: 1px solid var(--d-line);
  font-size: 11.5px;
  color: rgba(255, 255, 255, 0.36);
}
.footer-bottom .mono { font-family: var(--tech); letter-spacing: 0.12em; }
.footer-legal { display: inline-flex; flex-wrap: wrap; align-items: baseline; gap: 0 6px; }
.footer-icp-sep { color: rgba(255, 255, 255, 0.2); }
.footer-icp {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.25s, border-color 0.25s;
}
.footer-icp:hover { color: var(--aqua); border-bottom-color: currentColor; }

/* ---------- 15. Inner page hero ---------- */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: 158px 0 76px;
  background: var(--ink);
  color: var(--white);
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: radial-gradient(ellipse at 30% 0%, #000 5%, transparent 70%);
  mask-image: radial-gradient(ellipse at 30% 0%, #000 5%, transparent 70%);
}
.page-hero .shell { position: relative; z-index: 2; }
.crumbs {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--tech);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.45);
  text-transform: uppercase;
}
.crumbs a:hover { color: var(--aqua); }
.crumbs .sep { opacity: 0.4; }
.page-hero h1 {
  margin-top: 28px;
  text-wrap: balance;
  font-size: clamp(32px, 5.2vw, 66px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 600;
}
.page-hero .page-lead {
  margin-top: 20px;
  max-width: 620px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--d-muted);
}
.page-hero-meta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.page-hero-split {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 70px;
  align-items: end;
}
.page-index {
  padding-top: 18px;
  border-top: 1px solid var(--d-line);
}
.pi-head {
  margin-bottom: 6px;
  font-family: var(--tech);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--aqua);
}
.page-index ul li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 9px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.6);
}
.page-index ul li b {
  font-family: var(--tech);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.85);
}
.pi-foot {
  margin-top: 14px;
  font-family: var(--tech);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.32);
}
.meta-chip {
  padding: 7px 12px;
  border: 1px solid var(--d-line);
  border-radius: 3px;
  font-family: var(--tech);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.72);
}

/* ---------- 16. Catalog ---------- */
.filter-bar {
  position: sticky;
  top: 76px;
  z-index: 40;
  padding: 16px 0;
  background: rgba(244, 246, 247, 0.94);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.filter-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: 3px;
  background: transparent;
  font-size: 12.5px;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.25s var(--ease);
}
.chip:hover { color: var(--ink); border-color: var(--line-strong); }
.chip[aria-pressed="true"] { background: var(--ink); color: var(--white); }
.filter-count { font-family: var(--tech); font-size: 11px; letter-spacing: 0.14em; color: var(--muted); }
.catalog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.catalog-grid .p-card.is-hidden { display: none; }

/* ---------- 17. Product detail ---------- */
.pd-hero { position: relative; overflow: hidden; padding: 150px 0 72px; background: var(--ink); color: var(--white); }
.pd-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: radial-gradient(ellipse at 70% 20%, #000 5%, transparent 72%);
  mask-image: radial-gradient(ellipse at 70% 20%, #000 5%, transparent 72%);
}
.pd-hero .shell { position: relative; z-index: 2; }
.pd-hero-grid { display: grid; grid-template-columns: 1.02fr 0.98fr; gap: 58px; align-items: center; }
.pd-tag {
  display: inline-block;
  padding: 5px 10px;
  border: 1px solid rgba(42, 193, 207, 0.45);
  border-radius: 3px;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--aqua-2);
}
.pd-hero h1 {
  margin-top: 20px;
  text-wrap: balance;
  font-size: clamp(32px, 4.2vw, 54px);
  line-height: 1.18;
  letter-spacing: -0.025em;
  font-weight: 600;
}
.pd-model {
  margin-top: 16px;
  font-family: var(--tech);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.55);
}
.pd-hero h1 .h1-sub {
  display: block;
  margin-top: 12px;
  font-size: 0.4em;
  font-weight: 400;
  letter-spacing: 0.03em;
  color: var(--aqua);
  line-height: 1.3;
}
.pd-summary { margin-top: 20px; max-width: 520px; font-size: 14.5px; line-height: 1.9; color: var(--d-muted); }
.pd-slogan {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 14px;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--aqua);
}
.pd-slogan::before {
  content: "";
  flex: 0 0 auto;
  width: 24px;
  height: 1px;
  background: var(--aqua);
}
.pd-hero-specs { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.pd-hero-specs span {
  padding: 6px 11px;
  border: 1px solid var(--d-line);
  border-radius: 3px;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.78);
}
.pd-media {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--r-md);
  background: #c9d6e4;
}
.pd-media img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.pd-media--bp { background: #0a1b23; }
.pd-media--bp svg { width: 100%; aspect-ratio: 16 / 9; }
.pd-hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

.pd-section { padding: 86px 0; }
.pd-overview { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 72px; }
.pd-overview h2, .pd-block h2 {
  margin-top: 18px;
  font-size: clamp(25px, 3.2vw, 40px);
  text-wrap: balance;
  line-height: 1.2;
  letter-spacing: -0.025em;
  font-weight: 600;
}
.pd-intro { margin-top: 22px; font-size: 15px; line-height: 2; color: var(--muted); }
.pd-intro + .pd-intro { margin-top: 14px; }
.feature-list { margin-top: 34px; }
.feature {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 16px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}
.feature:last-child { border-bottom: 1px solid var(--line); }
.feature .f-index { font-family: var(--tech); font-size: 11px; letter-spacing: 0.1em; color: var(--teal); padding-top: 3px; }
.feature h3 { font-size: 16px; font-weight: 600; }
.feature p { margin-top: 4px; font-size: 13.5px; line-height: 1.75; color: var(--muted); }

.spec-wrap { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 64px; margin-top: 44px; }
.spec-group + .spec-group { margin-top: 40px; }
.spec-group h3 {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--ink);
  font-family: var(--tech);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
}
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table th,
.spec-table td {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
  vertical-align: top;
  text-align: left;
}
.spec-table th { width: 42%; font-weight: 400; color: var(--muted); }
.spec-table td { font-variant-numeric: tabular-nums; color: var(--ink); }
.spec-note { margin-top: 26px; font-size: 12px; line-height: 1.8; color: var(--muted); }

.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.scene {
  padding: 26px 24px 30px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
}
.scene .s-num { font-family: var(--tech); font-size: 10px; letter-spacing: 0.16em; color: var(--teal); }
.scene h3 { margin-top: 14px; font-size: 16px; font-weight: 600; }
.scene p { margin-top: 8px; font-size: 13px; line-height: 1.8; color: var(--muted); }

.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }

/* ---------- 18. About page ---------- */
.about-hero-grid { display: grid; grid-template-columns: 1.25fr 0.75fr; gap: 60px; align-items: end; }
.timeline { margin-top: 10px; }
.tl-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 28px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}
.tl-item:last-child { border-bottom: 1px solid var(--line); }
.tl-item .tl-key {
  font-family: var(--tech);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--teal);
  padding-top: 4px;
}
.tl-item h3 { font-size: 18px; font-weight: 600; }
.tl-item p { margin-top: 6px; max-width: 640px; font-size: 14px; line-height: 1.85; color: var(--muted); }

.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--d-line); border: 1px solid var(--d-line); margin-top: 48px; }
.value { padding: 34px 30px 40px; background: #0b2029; }
.value .v-en { font-family: var(--tech); font-size: 10px; letter-spacing: 0.18em; color: var(--aqua); text-transform: uppercase; }
.value h3 { margin-top: 16px; font-size: 22px; font-weight: 500; }
.value p { margin-top: 12px; font-size: 13.5px; line-height: 1.8; color: var(--d-muted); }

.team-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 40px; }
.person {
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
}
.person .p-role { font-family: var(--tech); font-size: 10.5px; letter-spacing: 0.14em; color: var(--teal); }
.person h3 { margin-top: 10px; font-size: 22px; font-weight: 600; }
.person h3 small { margin-left: 10px; font-size: 12px; font-weight: 400; color: var(--muted); letter-spacing: 0.04em; }
.person p { margin-top: 14px; font-size: 13.5px; line-height: 1.9; color: var(--muted); }

/* ---------- 19. Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 64px; align-items: start; }
.contact-card {
  padding: 34px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}
.contact-line {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.contact-line:first-child { padding-top: 0; }
.contact-line:last-child { border-bottom: 0; padding-bottom: 0; }
.contact-line dt { font-family: var(--tech); font-size: 10.5px; letter-spacing: 0.16em; color: var(--muted); padding-top: 3px; }
.contact-line dd { margin: 0; font-size: 14.5px; line-height: 1.8; }
.contact-line dd a { border-bottom: 1px solid rgba(14, 124, 136, 0.35); }
.contact-line dd a:hover { color: var(--teal); border-color: var(--teal); }
.contact-line dd .sub { display: block; margin-top: 4px; font-size: 12px; color: var(--muted); }

.people { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.person-row { display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: center; padding: 24px 26px; background: var(--white); }
.person-row h3 { font-size: 17px; font-weight: 600; }
.person-row span { display: block; margin-top: 2px; font-size: 12px; color: var(--muted); }
.person-row .phones { text-align: right; font-family: var(--tech); font-size: 15px; letter-spacing: 0.03em; }
.person-row .phones a { display: block; }
.person-row .phones a + a { margin-top: 2px; font-size: 13px; color: var(--muted); }
.person-row .phones a:hover { color: var(--teal); }

.map-card {
  position: relative;
  display: block;
  overflow: hidden;
  min-height: 320px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink);
  color: var(--white);
  text-decoration: none;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}
.map-card:hover {
  border-color: rgba(42, 193, 207, 0.45);
  box-shadow: 0 26px 60px -34px rgba(0, 0, 0, 0.65);
  transform: translateY(-2px);
}
.map-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.07) 1px, transparent 1px);
  background-size: 36px 36px;
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000, transparent 78%);
  mask-image: radial-gradient(circle at 50% 50%, #000, transparent 78%);
}
.map-card::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 71%;
  width: 12px;
  height: 12px;
  border: 2px solid var(--aqua);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 8px rgba(42, 193, 207, 0.12), 0 0 0 22px rgba(42, 193, 207, 0.05);
}
.map-card .mc-inner { position: relative; z-index: 2; height: 100%; display: flex; flex-direction: column; justify-content: space-between; gap: 80px; }
.map-card .mc-tag { font-family: var(--tech); font-size: 10px; letter-spacing: 0.2em; color: var(--aqua); }
.map-card h3 { margin-top: 10px; font-size: 22px; font-weight: 500; line-height: 1.4; }
.map-card p { margin-top: 8px; font-size: 12.5px; line-height: 1.8; color: var(--d-muted); }
.map-card .mc-coord { margin: 0; font-family: var(--tech); font-size: 10px; letter-spacing: 0.16em; color: rgba(255, 255, 255, 0.36); }
.map-card .mc-foot { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; }
.map-card .mc-go {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--aqua);
}
.map-card .mc-go svg { width: 14px; height: 14px; transition: transform 0.3s var(--ease); }
.map-card:hover .mc-go svg { transform: translateX(4px); }

.checklist { margin-top: 30px; }
.checklist li {
  position: relative;
  padding: 12px 0 12px 26px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--muted);
}
.checklist li:last-child { border-bottom: 1px solid var(--line); }
.checklist li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 20px;
  width: 6px;
  height: 6px;
  border: 1px solid var(--teal);
  border-radius: 50%;
}
.checklist b { color: var(--ink); font-weight: 500; }

/* ---------- 19b. Certificates ---------- */
.cert-block { margin-top: 70px; padding-top: 46px; border-top: 1px solid var(--line); }
.cert-head { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: end; margin-bottom: 30px; }
.cert-head h3 { margin-top: 14px; font-size: clamp(26px, 3vw, 36px); line-height: 1.2; letter-spacing: -0.02em; font-weight: 600; }
.cert-head > p { justify-self: end; max-width: 420px; color: var(--muted); font-size: 14px; line-height: 1.85; }
.cert-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.cert-featured { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.cert-featured .cert-card { padding: 10px; }
.cert-featured .cert-card span { min-height: 40px; font-size: 12.5px; }
.cert-sub {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  margin: 38px 0 18px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.cert-sub h4 { font-size: 19px; font-weight: 600; letter-spacing: -0.01em; }
.cert-sub h4 span { margin-left: 8px; font-family: var(--tech); font-size: 12px; font-weight: 400; letter-spacing: 0.06em; color: var(--muted); }
.cert-sub p { font-size: 12px; color: var(--muted); }
.cert-card {
  padding: 8px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
  text-align: left;
  cursor: pointer;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}
.cert-card:hover {
  transform: translateY(-4px);
  border-color: rgba(14, 124, 136, 0.35);
  box-shadow: 0 20px 44px -28px rgba(8, 22, 30, 0.45);
}
.cert-card img { display: block; width: 100%; height: auto; background: #fff; border: 1px solid rgba(8, 22, 30, 0.06); }
.cert-card span { display: block; min-height: 36px; margin-top: 9px; font-size: 11.5px; line-height: 1.55; color: var(--muted); }

.cert-modal {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: none;
  place-items: center;
  padding: 36px;
  background: rgba(4, 12, 17, 0.92);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.cert-modal.is-open { display: grid; }
.cert-modal figure { margin: 0; max-width: min(94vw, 900px); text-align: center; }
.cert-modal img { max-width: 100%; max-height: 80vh; width: auto; margin: 0 auto; background: #fff; box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5); }
.cert-modal figcaption { margin-top: 14px; color: rgba(255, 255, 255, 0.75); font-size: 13px; }
.cert-modal-close {
  position: absolute;
  top: 22px;
  right: 26px;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  background: transparent;
  color: #fff;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
}
.cert-modal-close:hover { background: rgba(255, 255, 255, 0.1); }

@media (max-width: 1140px) {
  .cert-grid { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 960px) {
  .cert-grid { grid-template-columns: repeat(3, 1fr); }
  .cert-featured { grid-template-columns: repeat(2, 1fr); }
  .cert-head { grid-template-columns: 1fr; gap: 18px; }
  .cert-head > p { justify-self: start; }
}
@media (max-width: 680px) {
  .cert-block { margin-top: 50px; padding-top: 34px; }
  .cert-grid, .cert-featured { grid-template-columns: repeat(2, 1fr); }
  .cert-modal { padding: 18px; }
  .cert-modal-close { top: 12px; right: 12px; }
}

/* ---------- 20. Reveal & motion ---------- */
.cert-grid--design { grid-template-columns: repeat(2, minmax(0, 1fr)); max-width: 640px; }
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .p-media img, .btn, .p-card { transition: none; }
}

/* ---------- 21. Responsive ---------- */
@media (max-width: 1140px) {
  .nav { gap: 26px; }
  .product-grid, .catalog-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-top { grid-template-columns: 1fr; gap: 30px; }
  .hero-aside .lead { max-width: 620px; }
  .split { gap: 48px; }
  .selector { gap: 48px; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-contact { grid-column: 1 / -1; }
}

@media (max-width: 960px) {
  .shell { width: calc(100% - 56px); }
  .section { padding: 86px 0; }
  .section-head { grid-template-columns: 1fr; gap: 20px; align-items: start; }
  .section-lead { justify-self: start; }
  .hero { padding-top: 132px; }
  .hero-top { grid-template-columns: 1fr; gap: 30px; }
  .hero-aside .lead { max-width: 560px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); margin-top: 46px; }
  .stat { border-bottom: 1px solid var(--d-line); padding-bottom: 22px; }
  .stat:nth-child(2n) { border-right: 0; }
  .stat:nth-last-child(-n + 2) { border-bottom: 0; }
  .hero-visual img { height: 400px; }
  .split { grid-template-columns: 1fr; }
  .split-visual { order: 2; }
  .selector { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 46px; }
  .cta-inner { grid-template-columns: 1fr; gap: 34px; }
  .cta-actions, .cta-phones { justify-content: flex-start; }
  .pd-hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .pd-media { order: -1; }
  .pd-overview { grid-template-columns: 1fr; gap: 46px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-hero-grid { grid-template-columns: 1fr; gap: 30px; align-items: start; }
  .page-hero-split { grid-template-columns: 1fr; gap: 34px; }
  .page-index { display: none; }
  .nav { display: none; }
  .nav-toggle { display: flex; }
  .header-actions .btn { display: none; }
  .value-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .team { grid-template-columns: 1fr; }
  .scene-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .spec-wrap { grid-template-columns: 1fr; gap: 0; }
}

@media (max-width: 680px) {
  .shell { width: calc(100% - 40px); }
  .section { padding: 68px 0; }
  .brand-text { --brand-size: 15px; }
  .brand-logo { height: 38px; }
  .hero { padding-top: 112px; }
  .hero-title { font-size: clamp(40px, 12vw, 56px); }
  .hero-title .cn-product { font-size: 0.3em; letter-spacing: 0.24em; }
  .hero-aside .lead { font-size: 15px; }
  .hero-visual img { height: 280px; }
  .hv-caption { display: none; }
  .hv-chips { left: 12px; bottom: 12px; }
  .hv-chip { font-size: 9.5px; padding: 6px 9px; }
  .trust-grid { grid-template-columns: 1fr 1fr; }
  .trust-item { flex-direction: column; align-items: flex-start; gap: 4px; padding: 18px 14px 18px 0; border-bottom: 1px solid var(--line); }
  .trust-item b { font-size: 13.5px; white-space: normal; }
  .trust-item span { font-size: 12px; line-height: 1.55; }
  .trust-item:nth-child(2n) { border-right: 0; }
  .trust-item:nth-last-child(-n + 2) { border-bottom: 0; }
  .product-grid, .catalog-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: 1fr; }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .partner { flex: 1 1 50%; border-bottom: 1px solid var(--line); }
  .partner:last-child { flex-basis: 100%; border-right: 0; border-bottom: 0; }
  .selector-card { padding: 24px; }
  .selector-result { grid-template-columns: 1fr; }
  .result-media { aspect-ratio: 16 / 9; }
  .section-foot { flex-direction: column; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-contact { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
  .filter-bar { top: 76px; }
  .related-grid { grid-template-columns: 1fr; }
  .cta-phones { gap: 20px; }
  .cta-phones div a { font-size: 17px; }
  .pd-section { padding: 62px 0; }
  .detail-2col { grid-template-columns: 1fr !important; }
}

/* small utilities */
[id] { scroll-margin-top: 96px; }
.skip-link {
  position: fixed;
  top: -100px;
  left: 20px;
  z-index: 200;
  padding: 12px 20px;
  background: var(--aqua);
  color: var(--ink);
  font-size: 13px;
  border-radius: 3px;
  transition: top 0.2s;
}
.skip-link:focus { top: 20px; }
.mono { font-family: var(--tech); letter-spacing: 0.08em; }
.text-aqua { color: var(--aqua); }
.pdf-note { font-size: 11.5px; color: var(--muted); margin-top: 18px; }
.mobile-cta a { font-size: 14px; border: 0 !important; padding: 14px 26px !important; }
.section-head.is-dark h2 { color: var(--white); }