/* =========================================================================
   MicroRight — design system
   Precision optics, editorial rhythm.
   Layers:  1) tokens  2) base  3) chrome  4) sections  5) views  6) motion
   ========================================================================= */

/* -------------------------------------------------------------------------
   1. TOKENS
   ------------------------------------------------------------------------- */
:root {
  /* surfaces */
  --paper: #f4f2ec;          /* warm paper */
  --paper-2: #eae6db;        /* deeper paper for bands */
  --photo-bg: #f2f0eb;       /* measured product-photo background (≈rgb(242,240,235)) */
  --photo-plate: linear-gradient(180deg, #f5f3ef 0%, #efede6 100%);
  --white: #ffffff;

  /* ink (dark surfaces) */
  --ink: #0b1220;
  --ink-2: #101b2d;
  --ink-3: #16243a;
  --fg: #eff3f9;
  --fg-soft: #c8d4e2;
  --muted-fg: #9db0c6;
  --border: rgba(255, 255, 255, 0.12);
  --border-soft: rgba(255, 255, 255, 0.07);

  /* text on light */
  --t-ink: #101d2e;
  --t-body: #46586c;
  --t-muted: #6c7d90;
  --t-line: #d9d5c9;

  /* accents */
  --blue: #4c93f0;
  --blue-deep: #2b6ed0;
  --blue-soft: #bfd9f7;
  --blue-wash: #e7f0fb;
  --copper: #d9964c;
  --teal: #2cbcb0;
  --violet: #8b8cf0;
  --rose: #e06a86;

  /* legacy aliases (kept so older markup keeps working) */
  --bg: var(--ink);
  --card: #131e30;
  --muted: #1c2941;
  --primary: var(--blue);
  --primary-deep: var(--blue-deep);
  --ring: #7db4f5;
  --light: var(--paper);
  --light-ink: var(--t-ink);
  --light-card: var(--white);
  --light-border: var(--t-line);
  --light-muted: var(--t-body);
  --btn-light: #e9f0fb;
  --btn-light-ink: #12283f;
  --orange: var(--copper);

  /* form */
  --radius: 14px;
  --radius-sm: 9px;
  --radius-xs: 6px;
  --max: 1280px;
  --wrap-wide: 1320px;
  --wrap-read: 760px;
  --nav-h: 76px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.32, 0.72, 0, 1);
  --t-press: 120ms;
  --t-soft: 220ms;
  --t-expr: 420ms;
  --sec-lg: clamp(96px, 10vw, 144px);
  --sec-md: clamp(72px, 7vw, 104px);
  --sec-sm: clamp(48px, 5vw, 68px);

  --font: "Helvetica Neue", "PingFang SC", -apple-system, BlinkMacSystemFont,
    "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
  --mono: "SF Mono", ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;

  --shadow-card: 0 1px 2px rgba(16, 29, 46, 0.05), 0 10px 28px rgba(16, 29, 46, 0.07);
  --shadow-card-hover: 0 2px 4px rgba(16, 29, 46, 0.06), 0 26px 56px rgba(16, 29, 46, 0.14);
  --shadow-deep: 0 30px 70px rgba(0, 0, 0, 0.5);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 24px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.78;
  color: var(--fg);
  background: var(--ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; height: auto; }

a {
  color: inherit;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
input, textarea { cursor: text; }

::selection { background: var(--blue); color: #06121f; }

h1, h2, h3, h4 { font-weight: 600; }
p { text-wrap: pretty; }

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

/* skip link：平时藏起，键盘聚焦时出现（ui-ux-pro-max checklist） */
.skip-link {
  position: absolute;
  left: 16px;
  top: -64px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--t-ink);
  color: #fff;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 12px; color: #fff; }

.container {
  width: min(calc(100% - 96px), var(--max));
  margin-inline: auto;
}
@media (max-width: 1080px) { .container { width: calc(100% - 64px); } }
@media (max-width: 700px)  { .container { width: calc(100% - 36px); } }

.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* reading progress — gradient rail */
.reading-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: var(--progress, 0%);
  background: linear-gradient(90deg, var(--blue-deep), var(--blue), var(--copper));
  z-index: 300;
  box-shadow: 0 0 14px rgba(76, 147, 240, 0.55);
  pointer-events: none;
  transition: width 0.1s linear;
}

/* -------------------------------------------------------------------------
   3. CHROME — header / nav / buttons
   ------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  padding: 0 48px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: background 0.35s var(--ease-soft), backdrop-filter 0.35s,
    border-color 0.35s, box-shadow 0.35s;
}
.site-header.is-scrolled {
  background: rgba(9, 15, 26, 0.72);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border-bottom-color: var(--border-soft);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.28);
}
.site-header.is-over-light {
  background: rgba(244, 242, 236, 0.84);
  border-bottom-color: rgba(16, 29, 46, 0.09);
  color: var(--t-ink);
}
.site-header.is-over-light .brand-text strong { color: var(--t-ink); }
.site-header.is-over-light .brand-text span { color: #636e7b; }
.site-header.is-over-light .nav-links a:not(.nav-cta) { color: #4a5b6d; }
.site-header.is-over-light .nav-links a:not(.nav-cta):hover,
.site-header.is-over-light .nav-links a:not(.nav-cta).is-active { color: var(--t-ink); }
.site-header.is-over-light .nav-cta {
  background: var(--t-ink);
  color: #fff;
}
.site-header.is-over-light .nav-cta:hover { background: #06121f; color: #fff; }
.site-header.is-over-light .nav-toggle { border-color: rgba(16, 29, 46, 0.2); }
.site-header.is-over-light .nav-toggle span { background: var(--t-ink); }

.header-inner {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand img {
  width: 38px; height: 38px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.16), 0 6px 18px rgba(0, 0, 0, 0.3);
  transition: transform 0.4s var(--ease);
}
.brand:hover img { transform: rotate(-8deg) scale(1.05); }
.brand-text { display: flex; flex-direction: column; line-height: 1.16; }
.brand-text strong {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--fg);
}
.brand-text span {
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted-fg);
  margin-top: 3px;
}

.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a:not(.nav-cta) {
  position: relative;
  font-size: 14px;
  font-weight: 500;
  color: #c2cddb;
  letter-spacing: 0.02em;
  transition: color 0.25s;
}
.nav-links a:not(.nav-cta):hover,
.nav-links a:not(.nav-cta).is-active { color: #fff; }
.nav-links a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -7px;
  height: 1.5px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--blue), var(--copper));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.nav-links a:not(.nav-cta):hover::after,
.nav-links a:not(.nav-cta).is-active::after { transform: scaleX(1); }

.nav-cta {
  display: inline-flex !important;
  align-items: center;
  gap: 10px;
  padding: 11px 20px;
  border-radius: 999px;
  background: var(--btn-light);
  color: var(--btn-light-ink);
  font-size: 13.5px !important;
  font-weight: 600;
  transition: background 0.3s, color 0.3s, transform 0.35s var(--ease),
    box-shadow 0.35s;
}
.nav-cta span { transition: transform 0.35s var(--ease); }
.nav-cta:hover {
  background: #fff;
  color: var(--btn-light-ink);
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(76, 147, 240, 0.24);
}
.nav-cta:hover span { transform: translate(2px, -2px); }
.site-header.is-over-light .nav-cta:hover { color: #fff; }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 11px;
  background: transparent;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0;
  transition: border-color 0.25s, background 0.25s;
}
.nav-toggle:hover { background: rgba(255, 255, 255, 0.07); }
.nav-toggle span {
  width: 17px; height: 1.5px;
  background: #fff;
  transition: transform 0.28s var(--ease), opacity 0.2s;
}
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.25px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.25px) rotate(-45deg); }

@media (max-width: 900px) {
  .site-header { padding-inline: 24px; }
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 14px 24px 26px;
    background: rgba(10, 17, 29, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 24px 50px rgba(0, 0, 0, 0.4);
    transform: translateY(-112%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.38s var(--ease), opacity 0.28s;
  }
  .nav-links.is-open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-links a:not(.nav-cta) {
    padding: 16px 0;
    border-bottom: 1px solid var(--border-soft);
    color: #e8eef7 !important;
    font-size: 16px;
  }
  .nav-links a:not(.nav-cta)::after { display: none; }
  .nav-cta {
    margin-top: 16px;
    justify-content: center;
    background: var(--btn-light);
    color: var(--btn-light-ink) !important;
  }
  .nav-cta:hover { background: #fff; }
}

/* ---- buttons ---- */
.button,
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 34px;
  padding: 15px 24px;
  min-height: 50px;
  background: var(--btn-light);
  color: var(--btn-light-ink);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  border-radius: 999px;
  overflow: hidden;
  white-space: nowrap;
  transition: background var(--t-soft), color var(--t-soft), transform var(--t-soft) var(--ease-spring),
    box-shadow var(--t-soft), border-color var(--t-soft);
}
.button::before,
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 30%, rgba(255, 255, 255, 0.55) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform 0.5s var(--ease-spring);
  pointer-events: none;
}
.button:hover::before,
.btn:hover::before { transform: translateX(120%); }
.button:hover,
.btn:hover {
  background: #fff;
  box-shadow: 0 16px 34px rgba(76, 147, 240, 0.24);
}
.button .arr,
.btn .arr {
  display: inline-block;
  color: var(--blue-deep);
  transition: transform var(--t-soft) var(--ease-spring), color var(--t-soft);
}
.button:hover .arr,
.btn:hover .arr { transform: translate(3px, -3px); }

.light .button,
.light .btn:not(.btn--ghost) { background: var(--btn-light-ink); color: #fff; }
.light .button .arr,
.light .btn:not(.btn--ghost) .arr { color: var(--blue-soft); }
.light .button:hover,
.light .btn:not(.btn--ghost):hover {
  background: #06121f;
  box-shadow: 0 16px 34px rgba(6, 18, 31, 0.24);
}

.btn--dark { background: var(--btn-light-ink); color: #fff; }
.btn--dark .arr { color: var(--blue-soft); }
.btn--dark:hover { background: #06121f; box-shadow: 0 16px 34px rgba(6, 18, 31, 0.24); }

.btn--ghost {
  gap: 12px;
  background: transparent;
  color: inherit;
  border: 1px solid rgba(255, 255, 255, 0.26);
}
.btn--ghost .arr { color: currentColor; }
.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: var(--blue);
  color: #fff;
  box-shadow: 0 0 0 1px rgba(76, 147, 240, 0.35), 0 14px 30px rgba(0, 0, 0, 0.25);
}
.light .btn--ghost,
.site-header.is-over-light .btn--ghost {
  border-color: rgba(16, 29, 46, 0.18);
  color: var(--t-ink);
}
.light .btn--ghost:hover,
.site-header.is-over-light .btn--ghost:hover {
  background: #fff;
  border-color: var(--blue-deep);
  color: var(--t-ink);
  box-shadow: var(--shadow-card);
}

.btn--orange {
  background: linear-gradient(135deg, #eab173, var(--copper));
  color: #241403;
}
.btn--orange .arr { color: #5a3208; }
.btn--orange:hover { background: #e8a763; box-shadow: 0 16px 34px rgba(217, 150, 76, 0.34); }

.btn--sm { padding: 11px 18px; min-height: 44px; font-size: 13.5px; gap: 16px; }
.btn--block { width: 100%; }

/* press feedback */
.button:active,
.btn:active { transform: translateY(-1px) scale(0.985); transition-duration: 0.08s; }
.nav-cta:active { transform: scale(0.965); }
.filter-btn:active { transform: translateY(0) scale(0.97); }
.p-card.is-in:active { transform: translateY(-3px) scale(0.994); }
.cat-tile:active,
.scene-product:active { transform: translateY(-2px) scale(0.995); }
.stat-card:active { transform: scale(0.99); }

/* -------------------------------------------------------------------------
   4. HERO
   ------------------------------------------------------------------------- */
.hero-home {
  position: relative;
  overflow: hidden;
  padding: calc(var(--nav-h) + 64px) 0 88px;
  background: linear-gradient(180deg, #f7f6f1 0%, var(--paper) 46%, #f0eee6 100%);
  color: var(--t-ink);
}

.hero-home__layout {
  position: relative;
  z-index: 2;
  width: min(calc(100% - 96px), var(--wrap-wide));
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 56px;
  align-items: center;
}
@media (max-width: 1080px) { .hero-home__layout { width: calc(100% - 64px); } }
@media (max-width: 700px) { .hero-home__layout { width: calc(100% - 36px); } }

.hero-copy { min-width: 0; }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 11px;
  margin: 0 0 22px;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #9fb4cb;
}
.eyebrow i {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 4px rgba(76, 147, 240, 0.16);
  flex-shrink: 0;
  animation: pulseDot 2.6s ease-in-out infinite;
}
.hero--light .eyebrow { color: #5b6f83; }
.hero--light .eyebrow i { animation: none; }
@keyframes pulseDot {
  0%, 100% { box-shadow: 0 0 0 3px rgba(76, 147, 240, 0.16); }
  50% { box-shadow: 0 0 0 7px rgba(76, 147, 240, 0.05); }
}

.hero-home h1 {
  margin: 0 0 22px;
  font-size: clamp(44px, 6vw, 88px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--t-ink);
}
.hero-home h1 em {
  font-style: normal;
  color: var(--blue-deep);
}
.title-line { display: block; }
.title-line > span { display: inline-block; animation: titleIn 0.8s var(--ease-spring) both; }
@keyframes titleIn {
  from { opacity: 0; filter: blur(10px); transform: translateY(100%) rotate(3deg); }
  to { opacity: 1; filter: blur(0); transform: none; }
}

.hero-home__sub {
  margin: 0 0 26px;
  max-width: 39em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--t-body);
}
.hero-enter { animation: rise 0.42s var(--ease-spring) 0.05s both; }
@keyframes rise {
  from { opacity: 0; filter: blur(4px); transform: translateY(22px); }
  to { opacity: 1; filter: blur(0); transform: none; }
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  animation: rise 0.42s var(--ease-spring) 0.12s both;
}

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 15px 6px;
  min-height: 50px;
  font-size: 15px;
  font-weight: 600;
  color: #cfe1f4;
  transition: color var(--t-soft), gap var(--t-soft) var(--ease-spring);
}
.link-more:hover { color: #fff; gap: 12px; }
.link-more .arr { color: var(--blue-soft); }
.hero--light .button { background: var(--t-ink); color: #fff; }
.hero--light .button .arr { color: var(--blue-soft); }
.hero--light .button:hover { background: #06121f; box-shadow: 0 16px 34px rgba(6, 18, 31, 0.24); }
.hero--light .link-more { color: var(--t-ink); }
.hero--light .link-more:hover { color: var(--blue-deep); }
.hero--light .link-more .arr { color: var(--blue-deep); }

/* product stage */
.hero-product {
  position: relative;
  z-index: 2;
  min-width: 0;
  display: grid;
  justify-items: center;
  align-content: center;
  padding: 30px 0 26px;
  animation: rise 0.5s var(--ease-spring) 0s both;
}

.orbit {
  position: absolute;
  width: 96%;
  aspect-ratio: 1;
  border: 1px solid rgba(120, 168, 230, 0.2);
  border-radius: 50%;
  transform: rotateX(62deg) rotate(-22deg);
  box-shadow: 0 0 90px rgba(59, 126, 217, 0.1);
  animation: orbitSpin 32s linear infinite;
  pointer-events: none;
}
.orbit::after {
  content: "";
  position: absolute;
  inset: 30px;
  border: 1px dashed rgba(140, 178, 234, 0.18);
  border-radius: 50%;
}
@keyframes orbitSpin { to { transform: rotateX(62deg) rotate(338deg); } }

.stage-index {
  position: relative;
  order: -1;
  margin-bottom: 20px;
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #636e7b;
  text-align: center;
}

.product-stage {
  position: relative;
  overflow: hidden;
  width: min(100%, 440px);
  padding: 32px 32px;
  display: grid;
  place-items: center;
  background: var(--photo-plate);
  border-radius: 22px;
  box-shadow:
    0 30px 70px rgba(16, 29, 46, 0.16),
    0 2px 6px rgba(16, 29, 46, 0.08);
  transition: transform 0.42s var(--ease-spring), box-shadow 0.42s var(--ease-spring);
}
.hero-product:hover .product-stage {
  box-shadow: 0 40px 88px rgba(16, 29, 46, 0.2), 0 2px 6px rgba(16, 29, 46, 0.08);
}
.product-stage img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 24px 34px rgba(16, 29, 46, 0.18));
}

.technical-label {
  position: relative;
  margin-top: 22px;
  width: min(100%, 440px);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--t-ink);
}
.technical-label b {
  font-size: 12px;
  font-weight: 400;
  line-height: 1.7;
  letter-spacing: 0.02em;
  text-align: right;
  color: #5b6f83;
  max-width: 17em;
}

.crosshair { display: none; }

.hero-bottom {
  position: relative;
  z-index: 3;
  width: min(calc(100% - 96px), var(--max));
  margin: 48px auto 0;
  padding-top: 20px;
  border-top: 1px solid rgba(16, 29, 46, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #636e7b;
}
.hero-bottom a { display: inline-flex; align-items: center; gap: 8px; color: var(--t-ink); transition: color 0.25s; }
.hero-bottom a:hover { color: var(--blue-deep); }
.scroll-arrow { display: inline-block; animation: nudge 2.2s infinite; }
@keyframes nudge {
  0%, 100% { transform: translateY(-2px); }
  50% { transform: translateY(4px); }
}

@media (max-width: 1080px) {
  .hero-home { padding-block: calc(var(--nav-h) + 44px) 64px; }
  .hero-home__layout { gap: 34px; }
}
@media (max-width: 900px) {
  .hero-home__layout { grid-template-columns: 1fr; gap: 42px; }
  .hero-home h1 { font-size: clamp(38px, 9vw, 54px); }
  .hero-product { padding-top: 8px; }
  .product-stage { width: min(80%, 380px); }
  .technical-label { width: min(100%, 380px); }
  .hero-bottom { display: none; }
}

/* -------------------------------------------------------------------------
   5. BUSINESS STRIP
   ------------------------------------------------------------------------- */
.business-strip {
  background: linear-gradient(180deg, #111d30, #0d1727);
  border-block: 1px solid var(--border);
}
.business-strip > div {
  display: grid;
  grid-template-columns: 1fr 1.15fr 1.1fr auto;
  gap: 28px;
  align-items: center;
  padding-block: 22px;
}
.business-strip strong {
  display: block;
  font-size: 17px;
  font-weight: 600;
  color: #edf3f9;
}
.business-strip span {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: #9fb2c6;
}
.business-strip a {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-size: 14px;
  font-weight: 500;
  color: #cfe1f4;
  padding: 8px 0 8px 24px;
  border-left: 1px solid var(--border);
  transition: color 0.25s;
}
.business-strip a span { margin: 0; transition: transform 0.35s var(--ease); }
.business-strip a:hover { color: #fff; }

.strip-scope {
  grid-column: 1 / -1;
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  font-size: 12.5px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: #8ba0b8;
}
/* 首页目录选型提示（由 Hero chips 下移，单色） */
.section-hint {
  margin: -6px 0 18px;
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: #5c6e82;
}
.business-strip a:hover span { transform: translate(3px, -3px); }

@media (max-width: 1080px) {
  .business-strip > div { grid-template-columns: 1fr 1fr; gap: 20px 28px; }
  .business-strip a { padding-left: 0; border-left: 0; }
}

/* -------------------------------------------------------------------------
   6. SECTIONS
   ------------------------------------------------------------------------- */
.section { padding-block: var(--sec-md); }
.section--lg { padding-block: var(--sec-lg); }
.section--sm { padding-block: var(--sec-sm); }
.section--tight { padding-block: 68px; }

.light {
  background:
    radial-gradient(ellipse 60% 50% at 88% 0%, rgba(76, 147, 240, 0.07), transparent 60%),
    linear-gradient(180deg, #f7f6f1, var(--paper) 40%, #f1efe7);
  color: var(--t-ink);
}
.light p { color: var(--t-body); }

.dark-tech {
  background:
    radial-gradient(ellipse 70% 60% at 50% 0%, rgba(43, 110, 208, 0.28), transparent 62%),
    linear-gradient(180deg, #0d1a2c, #0a1220 70%);
  overflow: hidden;
}
.dark-bg { color: var(--fg); }
.section--ink {
  background:
    radial-gradient(ellipse 55% 60% at 8% 0%, rgba(43, 110, 208, 0.22), transparent 62%),
    linear-gradient(180deg, #0c1626, #0a1120 75%);
}

.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 16px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #8ea1b7;
}
.section-label::before {
  content: "";
  width: 26px; height: 1px;
  background: linear-gradient(90deg, var(--blue), transparent);
}
.light .section-label { color: #6b8299; }
.light .section-label::before { background: linear-gradient(90deg, var(--blue-deep), transparent); }

.section-title {
  margin: 0;
  font-size: clamp(29px, 3vw, 44px);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: inherit;
}
.section-title span { color: #93a8c0; }
.light .section-title span {
  display: inline-block;
  margin-left: 14px;
  font-size: 0.52em;
  font-weight: 400;
  letter-spacing: 0.01em;
  color: #7c8d9f;
  vertical-align: middle;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  margin-bottom: 42px;
  flex-wrap: wrap;
}
.section-desc-tight {
  margin: 0;
  max-width: 30em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted-fg);
}

/* -------------------------------------------------------------------------
   7. PRODUCT CARDS
   ------------------------------------------------------------------------- */
.catalog,
.product-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
@media (min-width: 1180px) { .catalog { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (max-width: 1000px) { .catalog, .product-row { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px)  { .catalog, .product-row { grid-template-columns: 1fr; } }

.p-card {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--white);
  border: 1px solid rgba(16, 29, 46, 0.09);
  border-radius: var(--radius);
  color: var(--t-ink);
  text-align: left;
  box-shadow: var(--shadow-card);
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--t-soft) var(--ease), transform var(--t-soft) var(--ease-spring),
    box-shadow var(--t-soft), border-color var(--t-soft);
}
.p-card.is-in { opacity: 1; transform: none; }
.p-card.is-in:hover {
  border-color: rgba(76, 147, 240, 0.4);
  box-shadow: var(--shadow-card-hover);
}

.p-card__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px 0;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: #8695a6;
}
.p-card__top .arrow {
  font-size: 19px;
  color: var(--blue-deep);
  transition: transform 0.45s var(--ease);
}
.p-card.is-in:hover .p-card__top .arrow { transform: translate(2px, -2px) rotate(45deg); }

.p-card__img {
  position: relative;
  height: 208px;
  margin: 14px 14px 4px;
  padding: 22px 26px;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: var(--photo-plate);
  border-radius: 10px;
}
.p-card__img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 42%, rgba(255, 255, 255, 0.55) 50%, transparent 58%);
  transform: translateX(-130%);
  transition: transform 0.5s var(--ease-spring);
  pointer-events: none;
}
.p-card.is-in:hover .p-card__img::after { transform: translateX(130%); }
.p-card__img img {
  max-height: 164px;
  max-width: 92%;
  object-fit: contain;
  transition: transform 0.42s var(--ease-spring);
  filter: drop-shadow(0 14px 22px rgba(16, 29, 46, 0.1));
  will-change: transform;
  backface-visibility: hidden;
}
.p-card.is-in:hover .p-card__img img { transform: scale(1.07) translateY(-6px); }

.p-card__model {
  position: absolute;
  left: 12px; bottom: 10px;
  padding: 3px 9px;
  border: 1px solid rgba(16, 29, 46, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  letter-spacing: 0.01em;
  color: #657688;
  white-space: nowrap;
  transition: color 0.3s, border-color 0.3s;
}
.p-card.is-in:hover .p-card__model { color: var(--blue-deep); border-color: rgba(76, 147, 240, 0.4); }
.p-card--dark .p-card__model { background: rgba(255, 255, 255, 0.82); color: #5b6f83; }

.p-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 14px 20px 22px;
}
.p-card__cat {
  margin: 0;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #5377a0;
}
.p-card__name {
  margin: 8px 0 8px;
  font-size: 19px;
  font-weight: 600;
  line-height: 1.42;
  letter-spacing: -0.005em;
  color: var(--t-ink);
  overflow-wrap: anywhere;
}
.p-card__tag {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--t-body);
}
.p-card__link {
  display: inline-flex;
  align-items: center;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid rgba(16, 29, 46, 0.08);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--blue-deep);
}
.p-card__link::after {
  content: "→";
  margin-left: 7px;
  transition: transform 0.3s var(--ease);
}
.p-card.is-in:hover .p-card__link::after { transform: translateX(5px); }

.p-card__line {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-deep), var(--blue), var(--copper));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.55s var(--ease);
}
.p-card.is-in:hover .p-card__line { transform: scaleX(1); }

.p-card.cat-usb .p-card__cat { color: #2160a8; }
.p-card.cat-eyepiece .p-card__cat { color: #3f8ccb; }
.p-card.cat-hdmi .p-card__cat { color: #b0722a; }
.p-card.cat-display .p-card__cat { color: #12867c; }
.p-card.cat-light .p-card__cat { color: #6a5bd0; }

/* dark card variant */
.p-card--dark {
  background: #121e31;
  border-color: rgba(255, 255, 255, 0.1);
  color: var(--fg);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.3);
}
.p-card--dark .p-card__name { color: #fff; }
.p-card--dark .p-card__tag { color: var(--muted-fg); }
.p-card--dark .p-card__link { color: var(--blue-soft); border-top-color: rgba(255, 255, 255, 0.09); }
.p-card--dark.is-in:hover {
  border-color: rgba(76, 147, 240, 0.5);
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.45);
}

/* filter bar — pills */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 30px;
}
.filter-btn {
  padding: 10px 18px;
  border: 1px solid rgba(16, 29, 46, 0.13);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.6);
  color: #62748a;
  font-size: 13.5px;
  font-weight: 500;
  transition: background 0.28s, color 0.28s, border-color 0.28s,
    box-shadow 0.28s, transform 0.28s var(--ease);
}
.filter-btn:hover {
  background: #fff;
  border-color: rgba(76, 147, 240, 0.45);
  color: var(--t-ink);
  transform: translateY(-2px);
}
.filter-btn.is-active {
  background: var(--t-ink);
  border-color: var(--t-ink);
  color: #fff;
  box-shadow: 0 10px 24px rgba(16, 29, 46, 0.22);
}

/* -------------------------------------------------------------------------
   8. STEPS / WHY
   ------------------------------------------------------------------------- */
.steps,
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.why-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 900px) { .steps, .why-grid { grid-template-columns: 1fr; } }

.step,
.why {
  position: relative;
  overflow: hidden;
  padding: 32px 30px 34px;
  background: var(--white);
  border: 1px solid rgba(16, 29, 46, 0.08);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: transform var(--t-soft) var(--ease-spring), box-shadow var(--t-soft), border-color var(--t-soft);
}
.step::before,
.why::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-deep), var(--blue));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-soft) var(--ease-spring);
}
.step:hover,
.why:hover {
  border-color: rgba(76, 147, 240, 0.35);
  box-shadow: var(--shadow-card-hover);
}
.step:hover::before,
.why:hover::before { transform: scaleX(1); }

.step__icon {
  width: 50px; height: 50px;
  margin-bottom: 22px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: linear-gradient(150deg, rgba(76, 147, 240, 0.13), rgba(76, 147, 240, 0.04));
  color: var(--blue-deep);
  transition: transform 0.5s var(--ease);
}
.step:hover .step__icon { transform: translateY(-3px) rotate(-4deg); }
.step__icon svg { width: 26px; height: 26px; }
.step__icon--orange {
  background: linear-gradient(150deg, rgba(217, 150, 76, 0.18), rgba(217, 150, 76, 0.05));
  color: #b0722a;
}
.step__icon--teal {
  background: linear-gradient(150deg, rgba(44, 188, 176, 0.16), rgba(44, 188, 176, 0.04));
  color: #12867c;
}
.step__n {
  position: absolute;
  top: 20px; right: 24px;
  font-size: 34px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.04em;
  color: rgba(16, 29, 46, 0.08);
}
.step h3,
.why h3 {
  margin: 0 0 10px;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--t-ink);
}
.step p,
.why p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--t-body);
}

.why__tag {
  display: inline-block;
  margin-bottom: 16px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.07em;
}
.why__tag--blue, .why__tag--orange,
.why__tag--teal, .why__tag--violet { background: rgba(43, 110, 208, 0.1); color: #2160a8; }

/* icon lists */
.icon-list {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 0;
}
.icon-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding-block: 13px;
  border-bottom: 1px solid rgba(16, 29, 46, 0.09);
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--t-body);
}
.icon-list li svg { flex-shrink: 0; width: 18px; height: 18px; margin-top: 4px; color: var(--blue-deep); }
.dark-bg .icon-list li { color: var(--muted-fg); border-color: var(--border-soft); }
.dark-bg .icon-list li svg { color: var(--blue); }

/* -------------------------------------------------------------------------
   9. FEATURE BAND
   ------------------------------------------------------------------------- */
.feature-band {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 560px;
}
.feature-band__media {
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
  padding: 56px;
  background: var(--photo-plate);
}
.feature-band__media::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 60% at 50% 45%, rgba(76, 147, 240, 0.14), transparent 65%);
  pointer-events: none;
}
.feature-band__media--teal::before {
  background: radial-gradient(ellipse 60% 60% at 50% 45%, rgba(44, 188, 176, 0.14), transparent 65%);
}
.feature-band__media img {
  position: relative;
  width: min(100%, 430px);
  filter: drop-shadow(0 32px 54px rgba(16, 29, 46, 0.2));
  transition: transform 0.8s var(--ease);
}
.feature-band:hover .feature-band__media img { transform: scale(1.06) translateY(-10px) rotate(-1deg); }

.feature-band__copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 72px clamp(32px, 5vw, 84px);
  background: linear-gradient(165deg, #f6f5f0, #eeebe2);
  color: var(--t-ink);
}
.feature-band__copy h2 {
  margin: 0 0 18px;
  font-size: clamp(28px, 2.6vw, 38px);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.005em;
}
.feature-band__copy > p {
  margin: 0 0 22px;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--t-body);
}
@media (max-width: 900px) {
  .feature-band { grid-template-columns: 1fr; min-height: 0; }
  .feature-band__media { min-height: 320px; padding: 42px; }
  .feature-band__copy { padding: 44px 26px 50px; }
}

.home-scenes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 26px;
  margin-bottom: 26px;
}
.home-scenes a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 17px 0;
  border-bottom: 1px solid rgba(16, 29, 46, 0.12);
  transition: border-color 0.3s;
}
.home-scenes a:hover { border-bottom-color: var(--blue-deep); }
.home-scenes strong { display: block; font-size: 15px; font-weight: 600; color: #1b3a58; }
.home-scenes small { display: block; margin-top: 3px; font-size: 12px; color: #667789; }
.home-scenes a > span:last-child { margin-left: auto; color: var(--blue-deep); transition: transform 0.3s var(--ease); }
.home-scenes a:hover > span:last-child { transform: translate(4px, -4px); }
.home-scenes .ui-icon { transition: transform 0.4s var(--ease); }
.home-scenes a:hover .ui-icon { transform: translateY(-3px); }
@media (max-width: 1050px) { .home-scenes { grid-template-columns: 1fr; } }

/* -------------------------------------------------------------------------
   10. CATEGORY TILES
   ------------------------------------------------------------------------- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
@media (max-width: 900px) { .cat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .cat-grid { grid-template-columns: 1fr; } }

.cat-tile {
  position: relative;
  display: block;
  overflow: hidden;
  padding: 28px 26px;
  background: var(--white);
  border: 1px solid rgba(16, 29, 46, 0.08);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: transform 0.42s var(--ease), box-shadow 0.42s, border-color 0.3s;
}
.cat-tile:hover {
  transform: translateY(-5px);
  border-color: rgba(76, 147, 240, 0.35);
  box-shadow: var(--shadow-card-hover);
}
.cat-tile::before {
  content: "";
  position: absolute;
  left: 0; top: 20px; bottom: 20px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--tile, var(--blue-deep));
  transform: scaleY(0.35);
  transition: transform 0.4s var(--ease);
}
.cat-tile:hover::before { transform: scaleY(1); }
.cat-tile:nth-child(1) { --tile: #2160a8; }
.cat-tile:nth-child(2) { --tile: #3f8ccb; }
.cat-tile:nth-child(3) { --tile: #b0722a; }
.cat-tile:nth-child(4) { --tile: #12867c; }
.cat-tile:nth-child(5) { --tile: #6a5bd0; }
.cat-tile:nth-child(6) { --tile: #c0526f; }
.cat-tile h3 { margin: 0 0 6px; font-size: 17px; font-weight: 600; color: var(--t-ink); }
.cat-tile p { margin: 0; font-size: 13.5px; color: var(--t-body); }
.cat-tile__arrow {
  position: absolute;
  right: 22px; top: 28px;
  font-size: 17px;
  color: #9aa8b6;
  transition: transform 0.35s var(--ease), color 0.25s;
}
.cat-tile:hover .cat-tile__arrow { transform: translate(4px, -4px); color: var(--tile, var(--blue-deep)); }

/* -------------------------------------------------------------------------
   11. WAVE STAGE
   ------------------------------------------------------------------------- */
.wave-stage {
  position: relative;
  height: 280px;
  margin-top: 34px;
  border-block: 1px solid var(--border-soft);
}
.wave-stage canvas { width: 100%; height: 100%; display: block; }
.wave-caption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  display: flex;
  font-size: 15px;
  color: #dbe6f2;
}
.wave-caption span {
  flex: 1;
  padding: 18px 20px;
  border-left: 1px solid var(--border-soft);
}
.wave-caption span:first-child { border-left: 0; padding-left: 0; }
.wave-caption b {
  display: block;
  margin-bottom: 6px;
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #85a0bd;
}
@media (max-width: 700px) {
  .wave-stage { height: 230px; }
  .wave-caption { font-size: 13px; }
  .wave-caption span { padding: 12px 10px; }
}

/* -------------------------------------------------------------------------
   12. BRAND CTA + STATS
   ------------------------------------------------------------------------- */
.brand-cta {
  background:
    radial-gradient(ellipse 60% 80% at 0% 100%, rgba(43, 110, 208, 0.35), transparent 62%),
    radial-gradient(ellipse 50% 60% at 100% 0%, rgba(217, 150, 76, 0.12), transparent 60%),
    linear-gradient(160deg, #14263f, #0c1526 70%);
}
.brand-cta__inner {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 56px;
  align-items: center;
}
.brand-cta__text {
  margin: 18px 0 26px;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: #a9bbcf;
}
.brand-cta__actions { display: flex; flex-wrap: wrap; gap: 12px; }
.brand-cta__stats { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }

.stat-card {
  padding: 26px 24px 22px 0;
  border-top: 1px solid var(--border);
  transition: border-color 0.35s;
}
.stat-card:hover { border-top-color: rgba(76, 147, 240, 0.6); }
.stat-card strong {
  display: block;
  font-size: clamp(30px, 3.4vw, 46px);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: #fff;
}
.stat-card span {
  display: block;
  margin-top: 10px;
  font-size: 13.5px;
  letter-spacing: 0.04em;
  color: #98abc0;
}
@media (max-width: 900px) {
  .brand-cta__inner { grid-template-columns: 1fr; gap: 36px; }
  .brand-cta__stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 20px; }
}
.contact-methods { padding-left: 40px; border-left: 1px solid var(--border); }
@media (max-width: 900px) {
  .contact-methods { padding-left: 0; padding-top: 28px; border-left: 0; border-top: 1px solid var(--border); }
}

/* -------------------------------------------------------------------------
   13. PAGE HERO (inner pages)
   ------------------------------------------------------------------------- */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--nav-h) + 64px) 0 56px;
  background: #0b1220;
  border-bottom: 1px solid var(--border-soft);
}
.page-hero > * { position: relative; z-index: 1; }
.page-hero .eyebrow { margin-bottom: 18px; }
.page-hero h1 {
  margin: 0 0 16px;
  font-size: clamp(34px, 4vw, 54px);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: #fff;
}
.page-hero p {
  margin: 0;
  max-width: 38em;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--muted-fg);
}

/* -------------------------------------------------------------------------
   14. PRODUCT DETAIL
   ------------------------------------------------------------------------- */
.pd { padding: 52px 0 96px; }
.pd__grid {
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  gap: 52px;
  align-items: start;
}
.pd__gallery {
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
  min-height: 460px;
  padding: 48px;
  background: var(--photo-plate);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.34);
}
.pd__gallery img {
  width: min(100%, 400px);
  max-height: 400px;
  object-fit: contain;
  filter: drop-shadow(0 26px 40px rgba(16, 29, 46, 0.22));
  transition: opacity 0.35s, transform 0.55s var(--ease);
}
.pd__gallery img.is-fading { opacity: 0; transform: scale(0.96); }

.pd__thumbs {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}
.pd__thumbs button {
  width: 66px; height: 66px;
  padding: 7px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 11px;
  background: var(--photo-bg);
  transition: border-color 0.25s, transform 0.3s var(--ease), box-shadow 0.3s;
}
.pd__thumbs button:hover { transform: translateY(-3px); border-color: var(--blue); }
.pd__thumbs button.is-active {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(76, 147, 240, 0.22);
}
.pd__thumbs img { width: 100%; height: 100%; object-fit: contain; }

.pd__factsheet {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 28px;
  margin: 22px 0 0;
  padding: 4px 0 0;
  border-top: 1px solid var(--border);
}
.pd__factsheet > div {
  display: flex;
  flex-direction: column-reverse;
  justify-content: flex-end;
  gap: 5px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border-soft);
}
.pd__factsheet dt {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: #8fa2b8;
}
.pd__factsheet dd {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: #eaf0f7;
  overflow-wrap: anywhere;
}
@media (max-width: 560px) { .pd__factsheet { grid-template-columns: 1fr; } }

.pd__info { min-width: 0; }
.pd__info .kicker {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue);
}
.pd__info h1,
.pd__info .pd__title {
  margin: 0 0 10px;
  font-size: clamp(27px, 3vw, 40px);
  font-weight: 600;
  line-height: 1.26;
  letter-spacing: -0.01em;
  color: #fff;
}
.pd__model {
  margin: 0 0 18px;
  font-size: 22px;
  letter-spacing: 0.02em;
  color: #cfe0f2;
}
.pd__tagline {
  margin: 0 0 14px;
  font-size: 18px;
  font-weight: 600;
  color: #dbe6f2;
}
.pd__desc {
  margin: 0 0 24px;
  font-size: 16px;
  line-height: 1.88;
  color: var(--muted-fg);
}
.pd__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 38px; }

/* highlights */
.pd__highlights {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  gap: 10px;
}
.pd__highlights li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  line-height: 1.7;
  color: #c5d4e4;
}
.pd__highlights li img { flex: 0 0 auto; width: 16px; height: 16px; margin-top: 5px; opacity: 0.9; }

/* spec table */
.spec-block h2 {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #8ea1b7;
}
.spec-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.spec-table tr { border-bottom: 1px solid var(--border-soft); transition: background 0.25s; }
.spec-table tr:hover { background: rgba(255, 255, 255, 0.035); }
.spec-table th,
.spec-table td { padding: 14px 12px; text-align: left; font-weight: 400; vertical-align: top; }
.spec-table th { width: 38%; padding-left: 0; color: #8fa2b8; }
.spec-table td {
  color: #e9eff7;
  font-family: var(--mono);
  font-size: 13.5px;
  overflow-wrap: anywhere;
}
.spec-table tr:nth-child(odd) { background: rgba(255, 255, 255, 0.02); }

.pd__related {
  margin-top: 76px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}
.pd__related h2 {
  margin: 0 0 28px;
  font-size: 24px;
  font-weight: 600;
  color: #fff;
}
.pd__related .p-card--dark .p-card__img { background: var(--photo-plate); }

.pd__crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  font-size: 13px;
  color: var(--muted-fg);
}
.pd__crumb a { transition: color 0.22s; }
.pd__crumb a:hover { color: var(--blue); }
.pd__crumb span[aria-current] { color: #fff; }
.pd__crumb span[aria-hidden] { opacity: 0.42; }

@media (max-width: 900px) {
  .pd__grid { grid-template-columns: 1fr; gap: 34px; }
  .pd__gallery { min-height: 320px; padding: 30px; }
}

/* -------------------------------------------------------------------------
   15. ABOUT
   ------------------------------------------------------------------------- */
.about-lead {
  max-width: 46em;
  font-size: clamp(17px, 1.5vw, 21px);
  line-height: 1.95;
  color: #b0c0d1;
}
.about-lead p { margin: 0 0 1.15em; color: inherit; }
.about-lead strong { color: #fff; font-weight: 600; }

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0 24px;
  margin-top: 60px;
  padding-top: 0;
  border-top: 1px solid var(--border);
}
.stats div { padding: 26px 0 4px; border-top: 1px solid transparent; transition: border-color 0.35s; }
.stats div:hover { border-top-color: rgba(76, 147, 240, 0.55); }
.stats div strong {
  display: block;
  font-size: clamp(30px, 3.4vw, 46px);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: #fff;
}
.stats div span { display: block; margin-top: 10px; font-size: 13.5px; letter-spacing: 0.06em; color: #93a6bb; }
@media (max-width: 720px) { .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

.dossier {
  margin-top: 56px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.025);
}
.dossier__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 26px;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid var(--border);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #dde6f0;
}
.dossier__body { display: grid; grid-template-columns: 1fr 1fr; }
.dossier__body > div {
  display: grid;
  grid-template-columns: 104px 1fr;
  gap: 14px;
  padding: 18px 26px;
  border-bottom: 1px solid var(--border-soft);
  font-size: 14.5px;
}
.dossier__body > div:nth-child(odd) { border-right: 1px solid var(--border-soft); }
.dossier__body dt { margin: 0; color: #8fa2b8; }
.dossier__body dd { margin: 0; color: #e9eff7; }
@media (max-width: 760px) {
  .dossier__body { grid-template-columns: 1fr; }
  .dossier__body > div:nth-child(odd) { border-right: 0; }
  .dossier__body > div { grid-template-columns: 1fr; gap: 4px; }
}

/* -------------------------------------------------------------------------
   16. APPLICATIONS
   ------------------------------------------------------------------------- */
.ui-icon { width: 24px; height: 24px; flex-shrink: 0; object-fit: contain; }

.applications-hero { padding-bottom: 60px; }
.applications-hero h1 { font-size: clamp(38px, 4.5vw, 62px); line-height: 1.3; margin-bottom: 30px; }
.applications-hero h1 span { color: #a9c5df; }
.applications-hero__bottom { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; }
.applications-hero__bottom p { max-width: 46em; }

.scene-text-link {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding-block: 12px;
  border-bottom: 1px solid rgba(125, 154, 185, 0.4);
  font-size: 15px;
  font-weight: 600;
  transition: border-color 0.3s, color 0.3s;
}
.scene-text-link:hover { border-bottom-color: var(--blue); }
.scene-text-link .ui-icon { transition: transform 0.35s var(--ease); }
.scene-text-link:hover .ui-icon { transform: translateX(6px); }
.applications-hero .scene-text-link { flex-shrink: 0; color: #c9dff1; }

.scene-nav {
  position: sticky;
  top: var(--nav-h);
  z-index: 70;
  background: rgba(244, 242, 236, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--t-line);
  color: #5d7085;
}
.scene-nav > div { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.scene-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 74px;
  padding: 18px;
  font-size: 15px;
  font-weight: 500;
  transition: color 0.25s, background 0.25s;
}
.scene-nav__link::after {
  content: "";
  position: absolute;
  left: 18px; right: 18px; bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--blue-deep), var(--blue));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.scene-nav__link:hover,
.scene-nav__link.is-current { color: var(--t-ink); background: rgba(255, 255, 255, 0.6); }
.scene-nav__link.is-current::after { transform: scaleX(1); }
.scene-nav__index { margin-left: auto; font-size: 12px; color: #8399ad; }

.scene-section {
  position: relative;
  overflow: hidden;
  padding-block: 82px 54px;
  scroll-margin-top: calc(var(--nav-h) + 96px);
}
.scene-section.light:nth-of-type(even) { background: #ece9e0; }
.scene-section::before {
  content: attr(data-num);
  position: absolute;
  top: 26px; right: 4%;
  font-size: clamp(120px, 16vw, 240px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.05em;
  color: rgba(16, 29, 46, 0.045);
  pointer-events: none;
  user-select: none;
}

.scene-heading {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 42px;
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(16, 29, 46, 0.14);
}
.scene-heading .section-label { margin: 0 0 8px; }
.scene-heading .section-label::before { display: none; }
.scene-heading h2 { margin: 0; font-size: 24px; font-weight: 600; line-height: 1.3; }
.scene-emblem {
  display: grid;
  place-items: center;
  width: 66px; height: 66px;
  flex-shrink: 0;
  border: 1px solid rgba(16, 29, 46, 0.12);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.7);
  box-shadow: 0 10px 24px rgba(16, 29, 46, 0.06);
}
.scene-emblem .ui-icon { width: 30px; height: 30px; }

.scene-layout {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: clamp(36px, 5vw, 84px);
  align-items: start;
}
.scene-copy { min-width: 0; }
.scene-copy h3 {
  margin: 0 0 18px;
  font-size: clamp(25px, 2.4vw, 36px);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.005em;
}
.scene-intro { margin: 0; font-size: 16px; line-height: 1.9; color: var(--t-body); }
.scene-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 28px;
  padding: 0;
}
.scene-tags li {
  padding: 5px 12px;
  border: 1px solid rgba(16, 29, 46, 0.14);
  border-radius: 999px;
  font-size: 13px;
  color: #3f5d7c;
  background: rgba(255, 255, 255, 0.55);
}
.scene-needs { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.scene-needs > div { display: flex; align-items: flex-start; gap: 12px; }
.scene-needs .ui-icon { width: 20px; height: 20px; margin-top: 4px; }
.scene-needs h4 { margin: 0 0 5px; font-size: 15.5px; font-weight: 600; color: #1e3a56; }
.scene-needs p { margin: 0; font-size: 14.5px; line-height: 1.78; color: var(--t-body); }
.scene-copy .scene-text-link { margin-top: 24px; color: #1f4a75; }

.scene-product {
  overflow: hidden;
  background: var(--white);
  border: 1px solid rgba(16, 29, 46, 0.09);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.45s, transform 0.45s var(--ease);
}
.scene-product:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.scene-product__top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 22px;
  font-size: 13px;
  color: #6b8098;
}
.scene-product__top a { color: var(--blue-deep); font-weight: 600; }
.scene-product__image {
  display: grid;
  place-items: center;
  min-height: 250px;
  margin: 0 14px;
  padding: 20px 34px;
  overflow: hidden;
  background: var(--photo-plate);
  border-radius: 10px;
}
.scene-product__image img {
  width: 100%;
  max-width: 330px;
  height: 220px;
  object-fit: contain;
  transition: transform 0.75s var(--ease);
  filter: drop-shadow(0 18px 28px rgba(16, 29, 46, 0.14));
}
.scene-product__image:hover img,
.scene-product__image:focus-visible img { transform: scale(1.06) translateY(-4px); }
.scene-product__bottom {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 20px 22px 0;
  font-size: 21px;
  font-weight: 600;
  color: #16324d;
}
.scene-product__bottom span:last-child { font-size: 12px; font-weight: 500; letter-spacing: 0.1em; color: #7c93a8; }
.scene-specs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 20px 22px;
}
.scene-specs > div {
  display: flex;
  flex-direction: column-reverse;
  justify-content: flex-end;
  border-right: 1px solid rgba(16, 29, 46, 0.1);
}
.scene-specs > div:nth-child(3n) { border-right: 0; }
.scene-specs dt { margin-top: 6px; font-size: 12px; color: #6b8098; }
.scene-specs dd { margin: 0; font-size: 15px; font-weight: 600; color: #22405e; font-variant-numeric: tabular-nums; }
.scene-alternative {
  display: block;
  padding: 14px 22px;
  border-top: 1px solid rgba(16, 29, 46, 0.08);
  background: #f7f6f1;
  font-size: 13.5px;
  color: #6b8098;
  transition: background 0.3s, color 0.3s;
}
.scene-alternative:hover { background: #fff; color: #3f5d7c; }
.scene-alternative strong { padding-inline: 6px; font-weight: 600; color: #1f4a75; }

.scene-flow {
  display: grid;
  grid-template-columns: 168px 1fr;
  align-items: center;
  gap: 26px;
  margin-top: 44px;
  padding: 24px 28px;
  border: 1px solid rgba(16, 29, 46, 0.12);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.5);
}
.scene-flow__label { display: flex; align-items: center; gap: 10px; font-size: 14px; color: #506b82; }
.scene-flow ol {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 30px;
  margin: 0;
  padding: 0;
}
.scene-flow li {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14.5px;
  font-weight: 500;
  color: #1f4364;
}
.scene-flow li > span {
  display: grid;
  place-items: center;
  width: 26px; height: 26px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--blue-wash);
  font-size: 12px;
  font-weight: 600;
  color: var(--blue-deep);
}
.scene-flow li:not(:last-child)::after {
  content: "→";
  position: absolute;
  right: -22px;
  color: #8fabc6;
}
.scene-flow.is-in li { animation: flowEnter 0.6s var(--ease) both; }
.scene-flow.is-in li:nth-child(2) { animation-delay: 0.12s; }
.scene-flow.is-in li:nth-child(3) { animation-delay: 0.24s; }
@keyframes flowEnter {
  from { opacity: 0; transform: translateX(-12px); }
  to { opacity: 1; transform: none; }
}
.scene-note { margin: 14px 0 0; font-size: 13.5px; color: #647b8f; }

/* selection / FAQ */
.selection-section {
  background:
    radial-gradient(ellipse 60% 70% at 100% 0%, rgba(43, 110, 208, 0.28), transparent 60%),
    linear-gradient(160deg, #16273f, #0c1526);
}
.selection-layout { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 76px; }
.selection-intro { margin: 22px 0 28px; font-size: 16px; line-height: 1.85; color: #aebfd1; }
.scene-faq { border-top: 1px solid var(--border); }
.scene-faq:last-child { border-bottom: 1px solid var(--border); }
.scene-faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0;
  list-style: none;
  font-size: 17px;
  font-weight: 500;
  color: #e0eaf4;
  cursor: pointer;
  transition: color 0.25s;
}
.scene-faq summary:hover { color: #fff; }
.scene-faq summary::-webkit-details-marker { display: none; }
.scene-faq summary .ui-icon { transition: transform 0.35s var(--ease); opacity: 0.75; }
.scene-faq[open] summary .ui-icon { transform: rotate(135deg); }
.scene-faq[open] > div { animation: answerEnter 0.4s var(--ease); }
.scene-faq p { margin: 0; padding: 0 34px 24px 0; font-size: 15px; line-height: 1.9; color: #aebfd1; }
@keyframes answerEnter {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 1050px) {
  .scene-nav__index { display: none; }
  .scene-nav__link { padding-inline: 12px; gap: 8px; }
  .scene-layout { grid-template-columns: 1fr 1fr; gap: 32px; }
  .scene-needs { grid-template-columns: 1fr; gap: 14px; }
  .scene-flow { grid-template-columns: 1fr; gap: 18px; }
  .selection-layout { gap: 44px; }
}
@media (max-width: 760px) {
  .applications-hero__bottom { display: block; }
  .applications-hero__bottom > a { margin-top: 20px; }
  .scene-nav__link { flex-direction: column; justify-content: center; gap: 5px; padding: 12px 3px; font-size: 12px; min-height: 70px; }
  .scene-nav__link .ui-icon { width: 21px; height: 21px; }
  .scene-nav__link::after { left: 6px; right: 6px; }
  .scene-section { padding-block: 52px 36px; }
  .scene-heading { gap: 14px; margin-bottom: 30px; padding-bottom: 22px; }
  .scene-emblem { width: 54px; height: 54px; }
  .scene-heading h2 { font-size: 22px; }
  .scene-layout { grid-template-columns: 1fr; gap: 26px; }
  .scene-product__image img { height: 200px; }
  .scene-flow { padding: 20px; margin-top: 30px; }
  .scene-flow ol { grid-template-columns: 1fr; gap: 22px; }
  .scene-flow li:not(:last-child)::after { content: "↓"; left: 0; right: auto; top: 24px; }
  .scene-specs { padding-inline: 16px; gap: 8px; }
  .selection-layout { grid-template-columns: 1fr; gap: 30px; }
  .scene-faq summary { font-size: 16px; }
  .scene-faq p { padding-right: 0; }
  .home-scenes { grid-template-columns: 1fr 1fr; gap: 0 16px; }
  .home-scenes small { display: none; }
}

/* -------------------------------------------------------------------------
   17. CONTACT
   ------------------------------------------------------------------------- */
.contact-layout {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: clamp(32px, 6vw, 84px);
  align-items: start;
}
.contact-info { display: grid; gap: 0; }
.contact-block {
  display: block;
  padding: 26px 0;
  border-bottom: 1px solid rgba(16, 29, 46, 0.12);
  transition: border-color 0.3s;
}
.contact-block:first-child { padding-top: 0; }
a.contact-block:hover { border-bottom-color: var(--blue-deep); }
.contact-block .label {
  display: block;
  margin-bottom: 8px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #5b7893;
}
.contact-block strong {
  display: block;
  font-size: clamp(18px, 1.9vw, 25px);
  font-weight: 600;
  line-height: 1.6;
  letter-spacing: 0;
  color: var(--t-ink);
  overflow-wrap: anywhere;
}
a.contact-block:hover strong { color: var(--blue-deep); }
.contact-block .hint { display: block; margin-top: 8px; font-size: 14px; color: #6b7f92; }
.contact-label { display: flex !important; align-items: center; gap: 10px; }
.contact-label .ui-icon { width: 20px; height: 20px; }

.contact-aside {
  margin-top: 30px;
  padding: 24px 26px;
  border: 1px solid rgba(16, 29, 46, 0.1);
  border-radius: var(--radius);
  background: linear-gradient(160deg, #fbfaf6, #f1efe8);
}
.contact-aside .label {
  display: block;
  margin-bottom: 14px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #5b7893;
}
.contact-aside ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 9px; }
.contact-aside li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.7;
  color: #3c536b;
}
.contact-aside li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--blue-deep);
  opacity: 0.65;
}
.contact-aside p { margin: 16px 0 0; font-size: 13.5px; color: #6b7f92; }

.form-card {
  padding: 40px;
  background: var(--white);
  border: 1px solid rgba(16, 29, 46, 0.08);
  border-radius: var(--radius);
  box-shadow: 0 24px 60px rgba(16, 29, 46, 0.08);
  position: relative;
  overflow: hidden;
}
.form-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-deep), var(--blue), var(--copper));
}
.form-card h2 { margin: 0 0 8px; font-size: 26px; font-weight: 600; color: var(--t-ink); }
.form-card > p { margin: 0 0 26px; font-size: 14.5px; color: #7b8b9c; }
.form-field { margin-bottom: 20px; }
.form-field label { display: block; margin-bottom: 8px; font-size: 14px; font-weight: 500; color: #34506a; }
.form-field input,
.form-field textarea {
  width: 100%;
  padding: 13px 15px;
  border: 1px solid rgba(16, 29, 46, 0.16);
  border-radius: var(--radius-xs);
  background: #f8f8f5;
  color: var(--t-ink);
  font-size: 15.5px;
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
}
.form-field input:hover,
.form-field textarea:hover { border-color: rgba(16, 29, 46, 0.28); }
.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--blue-deep);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(76, 147, 240, 0.14);
}
.form-field textarea { min-height: 118px; resize: vertical; }
.form-note { margin: 14px 0 0; font-size: 13px; color: #6b7f92; text-align: center; }
.form-note.is-ok { color: #0d7a4a; font-weight: 500; }
@media (max-width: 900px) { .contact-layout { grid-template-columns: 1fr; } }
@media (max-width: 700px) { .form-card { padding: 26px 20px; } }

/* -------------------------------------------------------------------------
   18. FOOTER
   ------------------------------------------------------------------------- */
.site-footer {
  padding: 66px 0 30px;
  background: #080e19;
  border-top: 1px solid var(--border-soft);
  font-size: 13.5px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.9fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 44px;
}
.footer-brand { display: flex; gap: 14px; align-items: flex-start; }
.footer-brand img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; }
.footer-brand strong { display: block; font-size: 16px; font-weight: 600; letter-spacing: 0.04em; color: #fff; }
.footer-brand p { margin: 10px 0 0; font-size: 13.5px; line-height: 1.85; color: #8fa2b8; }
.footer-col h4 {
  margin: 0 0 16px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #8ea1b7;
}
.footer-col a {
  display: block;
  padding: 6px 0;
  color: #a7b8ca;
  font-size: 14px;
  transition: color 0.22s, transform 0.28s var(--ease);
}
.footer-col a:hover { color: var(--blue-soft); transform: translateX(4px); }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding-top: 24px;
  border-top: 1px solid var(--border-soft);
  color: #7b8ea4;
  font-size: 12.5px;
  letter-spacing: 0.03em;
}
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px 24px; } .footer-brand { grid-column: 1 / -1; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }

/* -------------------------------------------------------------------------
   19. MOTION — reveal
   ------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease-spring);
}
.reveal.is-in { opacity: 1; transform: none; }

/* no-JS / reduced-motion: content must never be hidden */
html:not(.js) .reveal,
html:not(.js) .p-card { opacity: 1 !important; transform: none !important; }

@media (prefers-reduced-transparency: reduce) {
  .site-header.is-scrolled,
  .p-card__model { background: rgba(9, 15, 26, 0.96); backdrop-filter: none; -webkit-backdrop-filter: none; }
  .site-header.is-over-light { background: #f4f2ec; }
  .p-card__model { background: #fff; }
}
@media (prefers-contrast: more) {
  .p-card, .step, .why { border-color: rgba(16, 29, 46, 0.4); }
  .section-label, .section-hint, .business-strip span { color: inherit; }
  .site-header { border-bottom-color: currentColor; }
}

/* hover-lift 只在精确指针下生效（触屏点按不留 sticky hover） */
@media (hover: hover) and (pointer: fine) {
  .button:hover, .btn:hover { transform: translateY(-3px); }
  .p-card.is-in:hover { transform: translateY(-7px); }
  .p-card.is-in:hover .p-card__img img { transform: scale(1.07) translateY(-6px); }
  .step:hover, .why:hover { transform: translateY(-6px); }
  .hero-product:hover .product-stage { transform: translateY(-8px) rotate(-1deg); }
  .business-strip a:hover span { transform: translate(3px, -3px); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal,
  .p-card,
  .title-line > span,
  .hero-enter,
  .hero-actions,
  .hero-product { opacity: 1 !important; transform: none !important; filter: none !important; }
  #particles,
  .orbit,
  .orb,
  .product-stage::after,
  .hero-product::before { display: none !important; }
  .scene-flow.is-in li,
  .scene-faq[open] > div { animation: none; }
}

/* -------------------------------------------------------------------------
   20. RESPONSIVE TAIL
   ------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .section { padding-block: 84px; }
  .section--lg { padding-block: 96px; }
  .section--sm { padding-block: 60px; }
  .section--tight { padding-block: 58px; }
}
@media (max-width: 900px) {
  .section { padding-block: 68px; }
  .section--lg { padding-block: 76px; }
  .section--sm { padding-block: 52px; }
  .section-head { margin-bottom: 32px; }
  .section-title { font-size: 30px; }
  .light .section-title span { display: block; margin: 6px 0 0; font-size: 15px; }
  .catalog, .product-row { gap: 20px; }
}
@media (max-width: 700px) {
  :root { --nav-h: 66px; }
  .section { padding-block: 56px; }
  .section--lg { padding-block: 64px; }
  .section--sm { padding-block: 44px; }
  .page-hero { padding-block: calc(var(--nav-h) + 40px) 40px; }
  .page-hero h1 { font-size: 32px; }
  .p-card__img { height: 190px; margin: 12px 12px 2px; }
  .p-card__img img { max-height: 148px; }
  .step, .why { padding: 26px 22px 28px; }
  .step__n { font-size: 28px; top: 18px; right: 20px; }
  .stats { grid-template-columns: 1fr 1fr; }
  .dossier__head { padding: 16px 20px; font-size: 15px; }
  .dossier__body > div { padding: 16px 20px; }
}
@media (max-width: 380px) {
  .hero-home h1 { font-size: 29px; }
  .brand-cta__actions .btn { white-space: normal; }
}