/* ==========================================================================
   Lizhisec v2 — Components
   ========================================================================== */

/* ==========================================================================
   Site Header
   Bflabs-inspired: fixed, 88px tall, 3-column grid, blurred backdrop
   ========================================================================== */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 var(--page-inline);
  background: rgba(250, 248, 245, 0.9);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-base) var(--ease-out),
              background var(--dur-base) var(--ease-out),
              color var(--dur-base) var(--ease-out);
}

.site-header.is-stuck {
  border-bottom-color: var(--line);
  background: rgba(250, 248, 245, 0.94);
}

.site-header.is-over-dark,
.site-header.is-over-orange {
  background: rgba(17, 20, 23, 0.88);
  border-bottom-color: #faf8f514;
  color: var(--warm-white);
}

.site-header.is-over-dark.is-stuck,
.site-header.is-over-orange.is-stuck {
  background: rgba(17, 20, 23, 0.92);
}

.site-header.is-over-dark .nav-primary__link,
.site-header.is-over-orange .nav-primary__link {
  color: var(--warm-white);
}

.site-header.is-over-dark .nav-primary__link:hover,
.site-header.is-over-orange .nav-primary__link:hover {
  background: #faf8f514;
}

.site-header.is-over-dark .nav-primary__link.is-active,
.site-header.is-over-orange .nav-primary__link.is-active {
  color: var(--orange);
}

.site-header.is-over-dark .language-switcher,
.site-header.is-over-orange .language-switcher {
  color: #faf8f5cc;
}

.site-header.is-over-dark .language-switcher button:hover,
.site-header.is-over-dark .language-switcher button[aria-pressed="true"],
.site-header.is-over-orange .language-switcher button:hover,
.site-header.is-over-orange .language-switcher button[aria-pressed="true"] {
  background: var(--warm-white);
  color: var(--charcoal);
}

.site-header.is-over-dark .nav-toggle,
.site-header.is-over-orange .nav-toggle {
  color: var(--warm-white);
}

.site-header.is-over-dark .nav-toggle:hover,
.site-header.is-over-orange .nav-toggle:hover {
  background: #faf8f514;
}

/* Skip link for a11y */
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 12px 16px;
  background: var(--charcoal);
  color: var(--warm-white);
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  transform: translateY(-160%);
  transition: transform 0.18s var(--ease-out);
}
.skip-link:focus { transform: translateY(0); }

.site-header__inner {
  width: 100%;
  display: contents;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-md);
  letter-spacing: 0.02em;
  color: var(--charcoal);
  justify-self: start;
}

.brand-mark {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  background: var(--orange);
  color: var(--warm-white);
  border-radius: var(--r-xs);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.brand-name { line-height: 1; }

.brand small {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--silver);
  margin-top: 4px;
  font-weight: 400;
}

/* Nav */
.nav-primary {
  display: none;
}

.nav-primary__list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-primary__item { position: relative; }

.nav-primary__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  font: inherit;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--charcoal);
  border: 0;
  background: none;
  cursor: pointer;
  border-radius: var(--r-sm);
  transition: background var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}

.nav-primary__link:hover {
  background: #11141708;
}

.nav-primary__link.is-active {
  color: var(--orange);
}

.nav-primary__caret {
  font-size: 10px;
  opacity: 0.6;
  transition: transform var(--dur-fast) var(--ease-out);
}

.nav-primary__item:hover .nav-primary__caret { transform: rotate(180deg); }

.nav-primary__sub {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 220px;
  background: var(--warm-white);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 8px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out),
              visibility var(--dur-base);
}

.nav-primary__item:hover .nav-primary__sub,
.nav-primary__item:focus-within .nav-primary__sub,
.nav-primary__item--dropdown.is-open .nav-primary__sub {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-primary__item--dropdown.is-open .nav-primary__caret {
  transform: rotate(180deg);
}

.nav-primary__sub a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  font-size: var(--fs-sm);
  color: var(--charcoal);
  border-radius: var(--r-sm);
  transition: background var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}

.nav-primary__sub a:hover {
  background: var(--warm-white-deep);
  color: var(--orange);
}

.nav-primary__sub a small {
  font-size: 10px;
  color: var(--silver);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.brand-logo {
  display: block;
  height: 42px;
  width: auto;
}

.brand-logo--on-dark { display: none; }

.site-header.is-over-dark .brand-logo--on-light,
.site-header.is-over-orange .brand-logo--on-light { display: none; }

.site-header.is-over-dark .brand-logo--on-dark,
.site-header.is-over-orange .brand-logo--on-dark { display: block; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  grid-column: 3;
  justify-self: end;
}

.language-switcher {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  color: var(--steel);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.language-switcher button {
  min-width: 40px;
  min-height: 40px;
  padding: 0 8px;
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
  background: transparent;
  border: 0;
  cursor: pointer;
  transition: color 0.18s, background-color 0.18s, transform 0.16s var(--ease-out);
}

.language-switcher button:hover,
.language-switcher button[aria-pressed="true"] {
  background: var(--charcoal);
  color: var(--warm-white);
}

.language-switcher button:active { transform: scale(0.96); }

.language-divider {
  padding: 0 2px;
  opacity: 0.45;
  pointer-events: none;
}

.header__contact-external svg { flex-shrink: 0; }

@media (max-width: 640px) {
  .header__contact-external { display: none; }
}

/* Language switcher */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  font-weight: 600;
  color: var(--charcoal);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition:
    border-color var(--dur-fast) var(--ease-out),
    background var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out);
}

.lang-toggle:hover {
  border-color: var(--charcoal);
  background: var(--charcoal);
  color: var(--warm-white);
}

.lang-toggle.is-changing {
  animation: lang-pop 0.36s var(--ease-out);
}

@keyframes lang-pop {
  0%   { transform: scale(1); }
  40%  { transform: scale(0.85); }
  100% { transform: scale(1); }
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--r-sm);
  color: var(--charcoal);
  transition: background var(--dur-fast) var(--ease-out);
}

.nav-toggle:hover { background: #1114170a; }

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: currentColor;
  position: relative;
  transition: transform var(--dur-base) var(--ease-out);
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--dur-base) var(--ease-out);
}

.nav-toggle span::before { top: -6px; }
.nav-toggle span::after  { top: 6px; }

.nav-toggle.is-open span { background: transparent; }
.nav-toggle.is-open span::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle.is-open span::after  { transform: translateY(-6px) rotate(-45deg); }

@media (min-width: 1024px) {
  .nav-primary { display: block; }
  .nav-toggle { display: none; }
}

/* Mobile menu */
.mobile-menu {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  z-index: 40;
  background: var(--warm-white);
  padding: 24px var(--gutter);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--dur-base) var(--ease-out);
}

.mobile-menu.is-open { transform: translateX(0); }

.mobile-menu__list { display: grid; gap: 4px; }

.mobile-menu__cta {
  margin-top: 32px;
  justify-content: center;
}

.mobile-menu__list details > summary {
  list-style: none;
  cursor: pointer;
}
.mobile-menu__list details > summary::-webkit-details-marker { display: none; }

.mobile-menu__link {
  display: block;
  padding: 16px 0;
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  font-weight: 500;
  color: var(--charcoal);
  border-bottom: 1px solid var(--line);
}

.mobile-menu__link[href]:hover,
.mobile-menu__list details[open] > summary {
  color: var(--orange);
}

.mobile-menu__sub {
  padding: 4px 0 16px;
  display: grid;
  gap: 4px;
}

.mobile-menu__sub a {
  padding: 8px 0;
  color: var(--steel);
  font-size: var(--fs-md);
}

/* ==========================================================================
   Buttons — bflabs style: uppercase, wide letter-spacing, min-height 52px
   ========================================================================== */
.btn {
  --btn-bg: var(--charcoal);
  --btn-fg: var(--warm-white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-height: 52px;
  padding: 0 24px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  transition: transform 0.22s var(--ease-out),
              background 0.22s var(--ease-out),
              color 0.22s var(--ease-out);
  white-space: nowrap;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn .arrow {
  display: inline-flex;
  transition: transform var(--dur-fast) var(--ease-out);
}
.btn:hover .arrow { transform: translateX(3px); }

.btn--primary {
  --btn-bg: var(--orange);
  --btn-fg: var(--warm-white);
}
.btn--primary:hover { --btn-bg: var(--orange-deep); }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--charcoal);
  border-color: var(--line);
}
.btn--ghost:hover {
  --btn-bg: var(--charcoal);
  --btn-fg: var(--warm-white);
  border-color: var(--charcoal);
}

.btn--link {
  --btn-bg: transparent;
  --btn-fg: var(--charcoal);
  padding: 8px 0;
  border-radius: 0;
  border-bottom: 1px solid var(--charcoal);
  min-height: auto;
}
.btn--link:hover { transform: none; --btn-fg: var(--orange); border-color: var(--orange); }

.btn--sm { min-height: 36px; padding: 0 16px; font-size: 11px; }
.btn--lg { min-height: 56px; padding: 0 28px; font-size: 13px; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + clamp(28px, 5vw, 64px)) 0 clamp(64px, 8vw, 110px);
  position: relative;
  overflow: hidden;
}

.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero__copy {
  max-width: 720px;
}

/* Narrower screens: keep the hero tight, avoid the 100svh min-height
   forcing extra scroll / awkward gaps when copy + visual stack vertically */
@media (max-width: 1099px) {
  .hero {
    min-height: auto;
    padding-top: calc(var(--header-h) + clamp(20px, 4vw, 40px));
  }
  .hero__title { margin-top: 22px; font-size: clamp(40px, 6.4vw, 52px); }
  .hero__subtitle { margin-top: 18px; }
  .hero__cta { margin-top: 24px; }
  .hero__trust { margin-top: 28px; padding-top: 18px; }
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--steel);
}

.hero__eyebrow .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--orange);
  animation: pulse 2.4s var(--ease-in-out) infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.4; transform: scale(0.85); }
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--fs-display-lg);
  line-height: 1.18;
  font-weight: 500;
  letter-spacing: -0.03em;
  margin: 36px 0 0;
  color: var(--charcoal);
}

.hero__title em {
  font-style: normal;
  color: var(--orange);
}

.hero__title-line {
  display: block;
  overflow: hidden;
}

.hero__title-line > span {
  display: inline-block;
  opacity: 0;
  transform: translate3d(var(--hero-line-x, 0px), 18px, 0);
  animation: hero-line-converge 0.9s var(--ease-out) forwards;
  will-change: transform, opacity;
}

/* Bflabs-style alternating horizontal offset on each title line */
.hero__title-line:nth-child(1) > span { --hero-line-x: -8px;  animation-delay: 0.08s; }
.hero__title-line:nth-child(2) > span { --hero-line-x:  12px; animation-delay: 0.20s; }
.hero__title-line:nth-child(3) > span { --hero-line-x: -6px;  animation-delay: 0.32s; }
.hero__title-line:nth-child(4) > span { --hero-line-x:  10px; animation-delay: 0.44s; }
.hero__title-line:nth-child(5) > span { --hero-line-x: -4px;  animation-delay: 0.56s; }

@keyframes hero-line-converge {
  to {
    opacity: 1;
    transform: translate3d(var(--hero-line-x, 0px), 0, 0);
  }
}

.hero__title-line:nth-child(2) > span { animation-delay: 0.12s; }
.hero__title-line:nth-child(3) > span { animation-delay: 0.24s; }

.hero__lede {
  font-size: var(--fs-md);
  line-height: var(--lh-loose);
  color: var(--steel);
  max-width: 56ch;
  margin-top: 32px;
}

/* Hero subtitle (value statement) + supporting line */
.hero__subtitle {
  margin-top: 24px;
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--charcoal);
}

.hero__subline {
  margin-top: 8px;
  font-size: var(--fs-base);
  line-height: var(--lh-loose);
  color: var(--steel);
  max-width: 52ch;
}

.hero__cta {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* Hero trust bar */
.hero__trust {
  margin-top: 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.hero__trust li {
  display: inline-flex;
  align-items: center;
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--charcoal);
}

.hero__trust li::before {
  content: "✓";
  margin-right: 8px;
  font-weight: 700;
  color: var(--orange);
}

.hero__meta {
  margin-top: 48px;
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.hero__meta-item {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel);
}

.hero__meta-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 500;
  color: var(--charcoal);
  text-transform: none;
  letter-spacing: -0.01em;
  margin-bottom: 2px;
}

/* Hero visual — product appliance on the right */
.hero__visual {
  position: relative;
  z-index: 2;
  margin: 0;
  width: min(100%, 420px);
  justify-self: center;
}

.hero__visual-stage {
  position: relative;
  isolation: isolate;
  display: grid;
  justify-items: center;
  gap: 14px;
}

.hero__visual-stage::before {
  content: "";
  position: absolute;
  inset: 18% 22% 8%;
  background: radial-gradient(ellipse at 50% 72%, #ff6a3324 0%, transparent 68%);
  filter: blur(22px);
  pointer-events: none;
  z-index: -1;
  animation: hero-appliance-glow 5.8s var(--ease-in-out) infinite;
}

.hero__visual img {
  position: relative;
  width: min(72%, 280px);
  height: auto;
  object-fit: contain;
  mix-blend-mode: multiply;
  filter: drop-shadow(0 16px 24px #1114171a);
  transform-origin: 50% 80%;
  animation: hero-appliance-float 6.6s var(--ease-in-out) infinite;
  will-change: transform;
}

.hero__specs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.hero__spec {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0;
  font-family: var(--font-display);
  line-height: 1.2;
  color: var(--charcoal);
  opacity: 0;
  animation: hero-spec-in 0.65s var(--ease-out) forwards;
}

.hero__spec-copy {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.hero__spec-copy b {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--orange);
  padding: 3px 8px;
  border: 1px solid #ff6a3352;
  border-radius: 4px;
  -webkit-font-smoothing: antialiased;
}

.hero__spec-copy > span {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--charcoal);
}

.hero__specs--left .hero__spec:nth-child(1),
.hero__specs--right .hero__spec:nth-child(1) { animation-delay: 0.28s; }
.hero__specs--left .hero__spec:nth-child(2),
.hero__specs--right .hero__spec:nth-child(2) { animation-delay: 0.48s; }

.hero__visual figcaption {
  margin-top: 10px;
  text-align: center;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 500;
  color: var(--charcoal);
}

@keyframes hero-appliance-float {
  0%, 100% { transform: translate3d(0, 0, 0); }
  50%      { transform: translate3d(0, -10px, 0); }
}

@keyframes hero-appliance-glow {
  0%, 100% { opacity: 0.55; transform: scale(0.96); }
  50%      { opacity: 1; transform: scale(1.08); }
}

@keyframes hero-spec-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@media (min-width: 1100px) {
  .hero__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: clamp(20px, 3vw, 48px);
  }

  .hero__visual {
    /* Wide enough for side labels + appliance on MacBook Pro */
    width: clamp(680px, 56vw, 820px);
    max-width: 100%;
    justify-self: end;
  }

  .hero__visual-stage {
    /* Side columns ≥ copy width so nowrap labels stay inside (no clip / no overlap) */
    grid-template-columns: 250px minmax(200px, 1fr) 250px;
    align-items: stretch;
    gap: 0 10px;
  }

  .hero__visual img {
    width: 100%;
    grid-column: 2;
    align-self: center;
    z-index: 0;
  }

  .hero__specs {
    display: block;
    position: relative;
    align-self: stretch;
    margin: 12% 0;
    z-index: 2;
  }

  .hero__specs--left { grid-column: 1; }
  .hero__specs--right { grid-column: 3; }

  .hero__spec {
    position: absolute;
    display: flex;
    align-items: center;
  }

  .hero__spec:nth-child(1) { top: 8%; }
  .hero__spec:nth-child(2) { top: 58%; }

  /* Original anchors: left grows left, right grows right — within the 250px column */
  .hero__specs--left .hero__spec { right: 0; left: auto; }
  .hero__specs--right .hero__spec { left: 0; right: auto; }

  .hero__specs--left .hero__spec::after,
  .hero__specs--right .hero__spec::before {
    content: "";
    position: absolute;
    top: 50%;
    width: 28px;
    height: 1px;
    background: #ff6a338a;
  }

  .hero__specs--left .hero__spec::after {
    left: calc(100% + 10px);
  }

  .hero__specs--right .hero__spec::before {
    right: calc(100% + 10px);
  }

  .hero__specs--left .hero__spec {
    animation-name: hero-spec-in-left;
  }

  .hero__specs--right .hero__spec {
    animation-name: hero-spec-in-right;
  }

  @keyframes hero-spec-in-left {
    from { opacity: 0; transform: translateX(-10px); }
    to   { opacity: 1; transform: none; }
  }

  @keyframes hero-spec-in-right {
    from { opacity: 0; transform: translateX(10px); }
    to   { opacity: 1; transform: none; }
  }
}

/* Narrower laptops (just above desktop breakpoint): stack badge/desc so 250px isn’t required */
@media (min-width: 1100px) and (max-width: 1279px) {
  .hero__visual {
    width: clamp(520px, 50vw, 640px);
  }

  .hero__visual-stage {
    grid-template-columns: minmax(140px, 1fr) minmax(220px, 280px) minmax(140px, 1fr);
  }

  .hero__spec-copy {
    flex-direction: column;
    align-items: inherit;
    gap: 4px;
    white-space: normal;
  }

  .hero__specs--left .hero__spec-copy {
    align-items: flex-end;
    text-align: right;
  }

  .hero__specs--right .hero__spec-copy {
    align-items: flex-start;
    text-align: left;
  }

  .hero__spec-copy > span {
    white-space: normal;
  }
}

.hero__visual-tag {
  position: absolute;
  bottom: 16px;
  left: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: rgba(17, 20, 23, 0.78);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--warm-white);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
}

/* Subtle decorative grid (bflabs "geometry" feel without heavy SVG) */
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(circle at 30% 0%, black 0%, transparent 60%);
  -webkit-mask-image: radial-gradient(circle at 30% 0%, black 0%, transparent 60%);
  pointer-events: none;
  opacity: 0.5;
  z-index: 0;
}

.hero > * { position: relative; z-index: 1; }

/* ==========================================================================
   Page hero (sub-pages, smaller variant)
   ========================================================================== */
.page-hero {
  padding-block: clamp(96px, 12vw, 180px) clamp(48px, 6vw, 88px);
  border-bottom: 1px solid var(--line);
}

.page-hero__breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-hero__breadcrumb a:hover { color: var(--orange); }
.page-hero__breadcrumb .sep { opacity: 0.5; }

.page-hero__title {
  font-size: var(--fs-display);
  line-height: var(--lh-tight);
  font-weight: 500;
  letter-spacing: -0.025em;
  margin-top: 24px;
  max-width: 18ch;
}

.page-hero__lede {
  margin-top: 24px;
  font-size: var(--fs-md);
  line-height: var(--lh-loose);
  color: var(--steel);
  max-width: 56ch;
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 28px;
  background: var(--warm-white);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: border-color var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
}

.card:hover {
  border-color: var(--charcoal);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card__index {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  color: var(--orange);
}

.card__title {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.25;
}

.card__description {
  font-size: var(--fs-sm);
  line-height: var(--lh-loose);
  color: var(--steel);
  flex: 1;
}

.card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.card__tag {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--silver);
}

/* Product grid */
.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 720px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1280px) {
  .product-grid { grid-template-columns: repeat(4, 1fr); }
}

.product-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px;
  background: var(--warm-white);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: all var(--dur-base) var(--ease-out);
  min-height: 360px;
}

.product-card:hover {
  border-color: var(--charcoal);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.product-card__index {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  color: var(--silver);
}

.product-card__icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  background: var(--orange-soft);
  border-radius: var(--r-sm);
  margin-block: 24px 20px;
}

.product-card__icon img { width: 32px; height: 32px; }

.product-card__title {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 500;
  letter-spacing: -0.015em;
  margin-bottom: 8px;
}

.product-card__title small {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--steel);
  margin-bottom: 4px;
}

.product-card__desc {
  font-size: var(--fs-sm);
  line-height: var(--lh-loose);
  color: var(--steel);
  margin-bottom: 24px;
  flex: 1;
}

.product-card__more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--charcoal);
  transition: color var(--dur-fast) var(--ease-out);
}

.product-card__more svg {
  transition: transform var(--dur-fast) var(--ease-out);
}

.product-card:hover .product-card__more { color: var(--orange); }
.product-card:hover .product-card__more svg { transform: translateX(4px); }

.product-specs {
  margin-top: clamp(12px, 2vw, 24px);
  border-bottom: 1px solid var(--line);
}

@media (min-width: 900px) {
  .product-specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: clamp(32px, 5vw, 72px);
  }

  .product-spec:nth-child(2) {
    border-top: 1px solid var(--line);
  }
}

.product-spec {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px 20px;
  align-items: start;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.product-spec:last-of-type {
  border-bottom: 0;
}

.product-spec__index {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--orange);
  padding-top: 4px;
}

.product-spec h4 {
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: 500;
  margin: 0 0 6px;
}

.product-spec p {
  margin: 0;
  color: var(--steel);
  font-size: var(--fs-sm);
  line-height: 1.65;
}

.product-specs__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(32px, 4vw, 48px);
}

/* Stat tiles (counters) */
.stat-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border-block: 1px solid var(--line);
}

@media (min-width: 720px) {
  .stat-row { grid-template-columns: repeat(4, 1fr); }
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 40px 28px;
  background: var(--warm-white);
  position: relative;
  transition: background var(--dur-base) var(--ease-out);
}

.stat::before {
  content: "";
  position: absolute;
  top: 16px;
  left: 28px;
  width: 6px;
  height: 1px;
  background: var(--orange);
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out);
}

.stat:hover { background: var(--warm-white-deep); }
.stat:hover::before { opacity: 1; transform: translateX(6px); }

.stat__value {
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1;
  color: var(--charcoal);
  font-feature-settings: "tnum" 1, "lnum" 1;
  margin-top: auto;
}

.stat__value sup {
  font-size: 0.42em;
  color: var(--orange);
  margin-left: 2px;
  font-weight: 500;
  vertical-align: top;
  position: relative;
  top: 0.4em;
}

/* Text labels used for compliance / credential tiles (no invented counts) */
.stat__value--text {
  font-size: clamp(22px, 2.6vw, 34px);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.stat__label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel);
}

/* Inverse stat row (dark sections) */
.inverse .stat { background: var(--charcoal); color: var(--warm-white); }
.inverse .stat:hover { background: #1e2226; }
.inverse .stat__value { color: var(--warm-white); }
.inverse .stat__label { color: #faf8f594; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--charcoal);
  color: var(--warm-white);
  position: relative;
}

.footer-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 28px var(--page-inline) 8px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--warm-white);
}

.footer-brand small {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: #faf8f594;
}

.footer-main nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 28px;
}

.footer-main nav a {
  font-size: var(--fs-sm);
  color: #faf8f5cc;
}

.footer-main nav a:hover { color: var(--warm-white); }

.footer-legal {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  padding: 18px var(--page-inline) 24px;
  text-align: center;
}

.footer-legal p {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0 14px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.7;
  color: #faf8f594;
}

.footer-legal a {
  color: inherit;
}

.footer-legal a:hover { color: var(--warm-white); }

.footer-legal__addr {
  display: block;
}

@media (max-width: 720px) {
  .footer-main {
    flex-direction: column;
    align-items: flex-start;
    padding-inline: 20px;
  }
  .footer-main nav { justify-content: flex-start; }
  .footer-legal { padding-inline: 20px; }
}

/* Timeline (about page) — vertical line with node markers */
.timeline {
  --tl-rail: 12px;
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  margin-top: 24px;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 32px;
  bottom: 32px;
  left: var(--tl-rail);
  width: 1px;
  background: var(--line);
  transform: translateX(-50%);
}

.timeline__item {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 48px;
  align-items: start;
  padding: 32px 0;
  position: relative;
}

.timeline__year {
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--charcoal);
  text-stroke: 1px var(--charcoal);
  position: relative;
  padding-left: 28px;
}

.timeline__year::before {
  content: "";
  position: absolute;
  left: var(--tl-rail);
  top: 50%;
  transform: translate(-50%, -50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--warm-white);
  border: 2px solid var(--orange);
  z-index: 1;
}

.timeline__content {
  display: grid;
  gap: 12px;
}

.timeline__content h3 {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.2;
}

.timeline__content p {
  font-size: var(--fs-base);
  line-height: var(--lh-loose);
  color: var(--steel);
  max-width: 56ch;
}

.timeline__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  color: var(--orange);
  margin-top: 4px;
}

@media (max-width: 720px) {
  .timeline__item { grid-template-columns: 80px 1fr; gap: 24px; }
  .timeline__year { font-size: 24px; }
}

.about-facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: clamp(40px, 5vw, 72px);
}

.about-fact {
  margin: 0;
  padding: 22px 24px;
  background: var(--warm-white);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}

.about-fact dt {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: 8px;
}

.about-fact dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--charcoal);
  line-height: 1.3;
}

.about-fact--long dd {
  font-size: var(--fs-md);
  line-height: 1.45;
}

@media (min-width: 860px) {
  .about-facts { grid-template-columns: repeat(2, 1fr); }
}

.about-faq {
  margin-top: clamp(40px, 5vw, 72px);
}

.about-faq__heading {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.about-faq__list {
  border-bottom: 1px solid var(--line);
}

@media (min-width: 860px) {
  .about-faq__list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 48px;
  }
}

.about-faq__item {
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.about-faq__item h4 {
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: 500;
  letter-spacing: -0.015em;
  margin-bottom: 8px;
}

.about-faq__item p {
  font-size: var(--fs-base);
  line-height: var(--lh-loose);
  color: var(--steel);
  max-width: 72ch;
}

.site-footer__tagline {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--line-dark);
  font-family: var(--font-mono);
  font-size: clamp(11px, 1.1vw, 14px);
  font-weight: 500;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: #faf8f594;
  text-align: center;
  position: relative;
}

.site-footer__tagline::before {
  content: "↳";
  display: block;
  margin-bottom: 16px;
  color: var(--orange);
  font-size: 16px;
  letter-spacing: 0;
  opacity: 0.7;
}

/* ==========================================================================
   Form
   ========================================================================== */
.form-field {
  display: grid;
  gap: 8px;
}

.form-field label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel);
}

.form-field input,
.form-field textarea,
.form-field select {
  width: 100%;
  padding: 14px 16px;
  font: inherit;
  font-size: var(--fs-base);
  color: var(--charcoal);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  transition: border-color var(--dur-fast) var(--ease-out);
  outline: none;
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  border-color: var(--charcoal);
}

.form-field textarea {
  min-height: 140px;
  resize: vertical;
}

/* ==========================================================================
   Marquee / Tag chips
   ========================================================================== */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--steel);
  background: var(--warm-white-deep);
  border-radius: var(--r-pill);
}

.chip--accent {
  background: var(--orange);
  color: var(--warm-white);
}

/* ==========================================================================
   Feature list (for product pages)
   ========================================================================== */
.feature-list {
  display: grid;
  gap: 1px;
  background: var(--line);
  border-block: 1px solid var(--line);
}

.feature-item {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 32px 0;
  background: var(--warm-white);
  transition: background var(--dur-fast) var(--ease-out);
}

.feature-item:hover { background: var(--warm-white-deep); }

.feature-item__index {
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 500;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1px var(--charcoal);
  text-stroke: 1px var(--charcoal);
  font-feature-settings: "tnum" 1;
  transition: all var(--dur-base) var(--ease-out);
}

.feature-item:hover .feature-item__index {
  color: var(--orange);
  -webkit-text-stroke-color: var(--orange);
  text-stroke-color: var(--orange);
}

/* Dark sections: outlined numbers in light, hover in orange */
.inverse .feature-item__index {
  -webkit-text-stroke-color: var(--warm-white);
  text-stroke-color: var(--warm-white);
}
.inverse .feature-item:hover .feature-item__index {
  color: var(--orange);
  -webkit-text-stroke-color: var(--orange);
  text-stroke-color: var(--orange);
}

.feature-item__title {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.feature-item__desc {
  display: block;
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: 400;
  color: var(--steel);
  margin-top: 4px;
  letter-spacing: 0;
}

.feature-item__arrow {
  color: var(--silver);
  transition: color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
}

.feature-item:hover .feature-item__arrow {
  color: var(--orange);
  transform: translateX(4px);
}

/* ==========================================================================
   Quote / Testimonial
   ========================================================================== */
.quote {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  line-height: 1.3;
  letter-spacing: -0.015em;
  color: var(--charcoal);
  max-width: 32ch;
}

.quote__cite {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 32px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  color: var(--steel);
}

.quote__cite::before {
  content: "";
  width: 32px;
  height: 1px;
  background: var(--charcoal);
}

/* ==========================================================================
   Logo strip / Trust
   ========================================================================== */
.logo-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  align-items: center;
  padding-block: 40px;
  border-block: 1px solid var(--line);
}

@media (min-width: 720px) {
  .logo-strip { grid-template-columns: repeat(4, 1fr); }
}

.logo-strip__item {
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--silver);
  text-align: center;
  opacity: 0.7;
  transition: opacity var(--dur-fast) var(--ease-out);
}

.logo-strip__item:hover { opacity: 1; color: var(--charcoal); }

/* ==========================================================================
   Contact section (bflabs-inspired minimal)
   ========================================================================== */
.contact-section {
  position: relative;
  overflow: hidden;
}

.contact-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 50%, #ff6a3314, transparent 50%),
    radial-gradient(circle at 80% 30%, #ff6a3321, transparent 55%);
  pointer-events: none;
}

.contact-section > * { position: relative; z-index: 1; }

.contact-email {
  margin-top: 32px;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.04em;
  color: #faf8f594;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  align-items: center;
}

/* Big tagline above contact buttons — bflabs-style slogan */
.contact-tagline {
  display: block;
  margin-top: 40px;
  font-family: var(--font-mono);
  font-size: clamp(13px, 1.6vw, 18px);
  font-weight: 500;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: #faf8f594;
  position: relative;
  padding: 0 32px;
}

.contact-tagline::before,
.contact-tagline::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 24px;
  height: 1px;
  background: currentColor;
  opacity: 0.4;
}

.contact-tagline::before { left: 0; }
.contact-tagline::after  { right: 0; }

.contact-email__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: #faf8f509;
  border: 1px solid #faf8f533;
  border-radius: var(--r-pill);
  color: var(--warm-white);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  transition: all var(--dur-fast) var(--ease-out);
}

.contact-email__link:hover {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--warm-white);
  transform: translateY(-1px);
}

/* ==========================================================================
   Capabilities
   ========================================================================== */
.capabilities {
  padding-block: clamp(72px, 9vw, 140px);
  padding-inline: var(--page-inline);
  background: var(--warm-white);
}

.capabilities.inverse {
  background: var(--charcoal);
  color: var(--warm-white);
}

.capabilities.inverse .capability-eyebrow,
.capabilities.inverse .capability-summary,
.capabilities.inverse .capability-row > p {
  color: #faf8f594;
}

.capabilities.inverse .capability-row {
  background: transparent;
  border-bottom: 1px solid #faf8f514;
}

.capabilities.inverse .capability-row:hover {
  background: #faf8f50c;
}

.capabilities.inverse .capability-row h3 {
  color: var(--warm-white);
}

.capabilities .stat-row {
  margin-top: clamp(48px, 6vw, 88px);
  background: #faf8f514;
  border: 0;
}

.capabilities.inverse .stat {
  background: #1a1e22;
}

.capabilities.inverse .stat:hover {
  background: #22272c;
}

.capability-heading {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr;
  align-items: start;
  gap: clamp(28px, 4vw, 72px);
}

.capability-eyebrow {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.17em;
  text-transform: uppercase;
  line-height: 1.4;
  color: var(--steel);
  margin: 0 0 22px;
}

html[lang="zh-CN"] .capability-eyebrow { letter-spacing: 0.08em; }

.capability-title {
  font-family: var(--font-display);
  font-size: var(--primary-heading-size);
  font-weight: 500;
  letter-spacing: -0.06em;
  line-height: 1.08;
  margin: 0;
  max-width: 850px;
}

.capability-summary {
  color: var(--steel);
  margin: 36px 0 0;
  font-size: 16px;
  line-height: 1.7;
}

.capability-list {
  display: grid;
  gap: 8px;
  margin-top: clamp(60px, 7vw, 110px);
}

.capability-row {
  display: grid;
  grid-template-columns: minmax(52px, 0.22fr) minmax(250px, 1.15fr) minmax(300px, 1.45fr);
  align-items: center;
  gap: clamp(20px, 3vw, 52px);
  min-height: 148px;
  padding: 28px 0 28px clamp(26px, 2.2vw, 38px);
  background: #11141706;
  position: relative;
  overflow: hidden;
}

.capability-row::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--orange);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.26s;
}

.capability-row:hover::before { transform: scaleY(1); }

.capability-number {
  color: var(--orange);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
}

.capability-row h3 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 48px);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 1.05;
  margin: 0;
}

html[lang="zh-CN"] .capability-row h3 { letter-spacing: -0.035em; }

.capability-row > p {
  color: var(--steel);
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
}

@media (max-width: 1180px) {
  .capability-heading { grid-template-columns: 1.25fr 0.9fr; }
  .capability-summary { grid-column: 2; margin-top: 0; }
  .capability-row {
    grid-template-columns: minmax(48px, 0.22fr) 1.05fr 1.25fr;
  }
}

@media (max-width: 860px) {
  .capability-heading { grid-template-columns: 1fr; }
  .capability-summary { grid-column: 1; margin-top: 12px; }
  .capability-row {
    grid-template-columns: 48px 1fr;
    gap: 18px;
    padding: 32px 0 32px 24px;
  }
  .capability-row h3 { grid-column: 2; }
  .capability-row > p { grid-column: 2; }
}

@media (max-width: 620px) {
  .capabilities { padding-inline: 20px; }
  .capability-row { grid-template-columns: 36px 1fr; }
  .capability-row h3 { font-size: 32px; }
}

/* Role cards (dark capabilities section) — customer-role framing */
.role-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: clamp(48px, 5vw, 80px);
}

@media (min-width: 720px) {
  .role-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1240px) {
  .role-grid { grid-template-columns: repeat(4, 1fr); }
}

.role-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 28px 26px 24px;
  background: #11141706;
  border: 1px solid var(--line-dark);
  border-radius: var(--r-md);
  position: relative;
  overflow: hidden;
  transition: border-color var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out),
              background var(--dur-base) var(--ease-out);
}

.role-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--orange);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.26s var(--ease-out);
}

.role-card:hover::before { transform: scaleY(1); }
.role-card:hover { background: #1114170d; transform: translateY(-3px); }

.role-card__index {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  color: var(--orange);
}

.role-card__title {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--warm-white);
}

.role-card__skills {
  font-size: var(--fs-sm);
  line-height: 1.6;
  color: #faf8f5cc;
}

.role-card__scene {
  font-size: var(--fs-sm);
  line-height: 1.6;
  color: #faf8f58a;
  flex: 1;
}

.role-card__more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--warm-white);
  transition: color var(--dur-fast) var(--ease-out);
}

.role-card__more svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  transition: transform var(--dur-fast) var(--ease-out);
}

.role-card:hover .role-card__more { color: var(--orange); }
.role-card:hover .role-card__more svg { transform: translateX(4px); }

.role-cta {
  margin-top: clamp(32px, 4vw, 48px);
}

/* Role-section CTA is a text link (single primary CTA lives in the hero);
   style for the dark capabilities backdrop. */
.role-cta .btn--link {
  --btn-fg: var(--warm-white);
  background: transparent;
  border-bottom-color: #faf8f5cc;
  padding-inline: 0;
}
.role-cta .btn--link:hover {
  --btn-fg: var(--orange);
  border-bottom-color: var(--orange);
  background: transparent;
}

/* ==========================================================================
   Manifesto + contact
   ========================================================================== */
.manifesto {
  min-height: 88svh;
  padding: clamp(110px, 12vw, 180px) var(--page-inline);
  background: var(--orange);
  color: var(--charcoal);
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  align-items: center;
  gap: clamp(40px, 6vw, 100px);
  position: relative;
  overflow: hidden;
}

.manifesto__copy { position: relative; z-index: 1; }

.manifesto__title {
  font-family: var(--font-display);
  font-size: clamp(40px, 6vw, 84px);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin: 0;
}

.kinetic-line {
  display: block;
}

.kinetic-line--accent {
  color: var(--warm-white);
}

.manifesto-address {
  display: block;
  margin: 12px 0 0;
  max-width: 36ch;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.04em;
  line-height: 1.7;
  color: #11141799;
}

.manifesto-contact-link {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 180px;
  padding: 28px 32px;
  background: #11141712;
  color: var(--charcoal);
  text-decoration: none;
}

.manifesto-contact-link span {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.7;
}

.manifesto-contact-link strong {
  margin-top: 10px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 500;
  letter-spacing: -0.02em;
}

.manifesto-contact-link svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  margin-top: 18px;
}

.manifesto-contact-link:hover {
  background: #1114171c;
}

.manifesto-index {
  position: absolute;
  right: var(--page-inline);
  bottom: 28px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: #11141766;
}

@media (max-width: 860px) {
  .manifesto {
    grid-template-columns: 1fr;
    min-height: auto;
    gap: 36px;
  }
  .manifesto-contact-link { min-height: 0; }
  .manifesto-index { right: 20px; }
}

/* English: longer words — loosen tight Chinese-tuned columns */
html[lang="en"] .nav-primary__link {
  padding: 10px 11px;
}

html[lang="en"] .stat__label {
  letter-spacing: 0.02em;
  text-transform: none;
  line-height: 1.35;
}

html[lang="en"] .hero__title {
  font-size: clamp(38px, 5.2vw, 64px);
  letter-spacing: -0.025em;
}

html[lang="en"] .hero__spec-copy {
  white-space: nowrap;
}

html[lang="en"] .hero__spec-copy b {
  letter-spacing: 0;
}

@media (min-width: 1280px) {
  html[lang="en"] .hero__visual-stage {
    grid-template-columns: 270px minmax(200px, 1fr) 270px;
  }
}

html[lang="en"] .manifesto__title {
  font-size: clamp(32px, 4.6vw, 62px);
  letter-spacing: -0.03em;
  line-height: 1.12;
}

/* ==========================================================================
   Kinetic heading (pointer-aware text) — inspired by bflabs.cn
   ========================================================================== */
[data-kinetic] {
  /* container resets */
}

[data-kinetic] [data-kinetic-word] {
  display: inline-block;
  transform-origin: 50% 60%;
  transition:
    transform 0.45s var(--ease-out),
    color 0.4s var(--ease-out),
    opacity 0.4s var(--ease-out);
  will-change: transform, color, opacity;
  cursor: pointer;
  position: relative;
}

[data-kinetic] [data-kinetic-word].is-active {
  color: var(--orange);
  transform: translateY(calc(var(--word-shift, 0px) * -1)) scale(var(--word-scale, 1));
  opacity: var(--word-opacity, 1);
}

/* Ripple expanding dot on click */
[data-kinetic] [data-kinetic-word]::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 6px;
  height: 6px;
  margin: -3px 0 0 -3px;
  border-radius: 50%;
  background: var(--orange);
  opacity: 0;
  pointer-events: none;
}

[data-kinetic] [data-kinetic-word].is-pressed::after {
  animation: kinetic-press 0.9s var(--ease-out);
}

@keyframes kinetic-press {
  0%   { opacity: 0.7; transform: scale(0.4); }
  60%  { opacity: 0.15; transform: scale(6); }
  100% { opacity: 0; transform: scale(10); }
}

/* Theme variants */
.kinetic-heading-light [data-kinetic-word]:not(.is-active) { color: var(--charcoal); }
.kinetic-heading-dark  [data-kinetic-word]:not(.is-active) { color: var(--warm-white); }
.kinetic-heading-orange [data-kinetic-word]:not(.is-active) { color: var(--charcoal); }
.kinetic-heading-orange[data-kinetic] [data-kinetic-word].is-active { color: var(--warm-white); }
.kinetic-heading-orange .kinetic-line--accent [data-kinetic-word]:not(.is-active) {
  color: var(--warm-white);
}

/* ==========================================================================
   Geometry decoration (animated ellipse rings)
   12-ellipse cluster with stroke-dasharray motion, mask fade and click ripple
   Inspired by bflabs.cn
   ========================================================================== */
[data-geometry] {
  position: relative;
  pointer-events: auto;
  --geometry-follow-y: 0px;
  --geometry-tilt: 0deg;
  --geometry-interaction: 0;
  --ring-shift: 0px;
  --ring-scale: 1;
  --ring-width: 1.35px;
  transform: translateY(var(--geometry-follow-y)) rotate(var(--geometry-tilt));
  transition: transform 0.8s var(--ease-out);
}

[data-geometry].is-interacting {
  transition: transform 0.35s var(--ease-out);
}

[data-geometry] svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}

/* All rings */
.kinetic-geometry-ring {
  fill: none;
  vector-effect: non-scaling-stroke;
  transform-origin: center;
  transform-box: fill-box;
  stroke-width: calc(var(--ring-width, 1.35px) * 1.4);
  stroke-dasharray: 410 24 132 18 286 34 194 28 350 66 210 248;
  opacity: calc(var(--ring-display-opacity, 0.5) * 1.7);
  transform: translateX(var(--ring-shift, 0px)) scale(var(--ring-scale, 1));
  animation: geometry-line-travel var(--ring-duration, 27s) linear var(--ring-delay, 0s) infinite;
}

@keyframes geometry-line-travel {
  to { stroke-dashoffset: -2000px; }
}

/* Ripple peak state (triggered on click) */
[data-geometry].is-ripple-peak .kinetic-geometry-ring {
  animation-play-state: running;
}

/* Theme: light (warm cream background) — dark strokes */
.kinetic-geometry-theme-light .kinetic-geometry-ring {
  stroke: var(--charcoal);
  opacity: calc(var(--ring-display-opacity, 0.5) * 1.2);
}
.kinetic-geometry-theme-light .kinetic-geometry-ring-accent {
  stroke: var(--orange);
}

/* Theme: dark (charcoal background) — light strokes */
.kinetic-geometry-theme-dark .kinetic-geometry-ring {
  stroke: var(--warm-white);
}
.kinetic-geometry-theme-dark .kinetic-geometry-ring-accent {
  stroke: var(--orange);
}

/* Theme: orange (highlight blocks) */
.kinetic-geometry-theme-orange .kinetic-geometry-ring {
  stroke: var(--warm-white);
}
.kinetic-geometry-theme-orange .kinetic-geometry-ring-accent {
  stroke: var(--warm-white);
  opacity: 0.95;
}

/* Mini geometry decoration for sub-pages — single horizontal ellipse band,
   simpler and smaller, sits behind the page hero */
.mini-geometry {
  position: absolute;
  top: 0;
  right: -10%;
  width: clamp(420px, 55vw, 720px);
  aspect-ratio: 1 / 1;
  pointer-events: auto;
  z-index: 0;
  animation: mini-geometry-float 18s var(--ease-in-out) infinite;
}

.mini-geometry svg {
  width: 100%;
  height: 100%;
  display: block;
  overflow: visible;
}

@keyframes mini-geometry-float {
  0%, 100% { transform: rotate(-2deg) scale(1); }
  50%      { transform: rotate(2deg)  scale(1.04); }
}

@media (max-width: 900px) {
  .mini-geometry {
    right: -30%;
    opacity: 0.5;
    width: 80vw;
  }
}

@media (max-width: 600px) {
  .mini-geometry { display: none; }
}

/* Page hero needs position:relative for the mini geometry to anchor */
.page-hero { position: relative; overflow: hidden; }
.page-hero > .container { position: relative; z-index: 1; }

/* ==========================================================================
   Hero parallax mark layers (bflabs-style 4-layer depth offset)
   ========================================================================== */
.hero__visual-stack {
  position: absolute;
  top: 0;
  right: -40px;
  width: clamp(560px, 62vw, 820px);
  height: 100%;
  display: grid;
  place-items: center;
  pointer-events: none;
  --interaction: 0;
  transition: --interaction 0.18s var(--ease-out);
}

.hero__mark-layer {
  grid-area: 1 / 1;
  width: 100%;
  aspect-ratio: 1 / 1;
  display: grid;
  place-items: center;
  will-change: transform;
  transition: transform 0.62s var(--ease-out);
}

.hero__mark-layer--far {
  z-index: 1;
  transform: translate3d(calc(var(--interaction, 0) * -36px), 0, 0);
}

.hero__mark-layer--mid {
  z-index: 2;
  transform: translate3d(calc(var(--interaction, 0) * -24px), 0, 0);
}

.hero__mark-layer--near {
  z-index: 3;
  transform: translate3d(calc(var(--interaction, 0) * -12px), 0, 0);
}

.hero__mark-layer--main {
  z-index: 4;
  transform: none;
}

/* Echo layer: grayscale + horizontal fade mask, gives the "ghost" feel */
.hero__mark-echo {
  width: 100%;
  height: 100%;
  filter: grayscale();
  pointer-events: none;
  -webkit-mask-image: linear-gradient(90deg, #000 0% 20%, #000000b8 30%, transparent 46%);
  mask-image: linear-gradient(90deg, #000 0% 20%, #000000b8 30%, transparent 46%);
  opacity: 0.45;
}

.hero__mark-echo--far  { animation: 8.4s ease-in-out 1.4s infinite echo-breathe; }
.hero__mark-echo--mid  { animation: 7.8s ease-in-out 1.4s infinite reverse echo-breathe; }
.hero__mark-echo--near { animation: 7.2s ease-in-out 1.4s infinite echo-breathe; }

/* Echo converge: each layer arrives from a different offset, then settles.
   Matches bflabs's echo-converge-far/mid/near keyframes. */
.hero__mark-layer--far  > .hero__mark-echo {
  animation:
    1.25s var(--ease-out) 0.08s both echo-converge-far,
    8.4s ease-in-out 1.4s infinite echo-breathe;
}
.hero__mark-layer--mid  > .hero__mark-echo {
  animation:
    1.15s var(--ease-out) 0.14s both echo-converge-mid,
    7.8s ease-in-out 1.4s infinite reverse echo-breathe;
}
.hero__mark-layer--near > .hero__mark-echo {
  animation:
    1.05s var(--ease-out) 0.20s both echo-converge-near,
    7.2s ease-in-out 1.4s infinite echo-breathe;
}

@keyframes echo-converge-far  { to { opacity: 1; transform: translate(0, 0) scale(1); } }
@keyframes echo-converge-mid  { to { opacity: 1; transform: translate(0, 0) scale(1); } }
@keyframes echo-converge-near { to { opacity: 1; transform: translate(0, 0) scale(1); } }

.hero__mark-layer--far  > .hero__mark-echo {
  transform: translate(-96px, 0) scale(0.97);
  opacity: 0;
}
.hero__mark-layer--mid  > .hero__mark-echo {
  transform: translate(-68px, 0) scale(0.98);
  opacity: 0;
}
.hero__mark-layer--near > .hero__mark-echo {
  transform: translate(-40px, 0) scale(0.99);
  opacity: 0;
}

@keyframes echo-breathe {
  0%, 100% { opacity: var(--echo-opacity, 0.06); }
  50%      { opacity: calc(var(--echo-opacity, 0.06) * 1.4); }
}

/* Forward word parallax — emphasized title word shifts with interaction.
   The echo behind is rendered from [data-echo] which JS keeps in sync. */
.forward-word {
  display: inline-block;
  font-style: normal;
  color: var(--orange);
  transform: translate3d(calc(var(--interaction, 0) * 24px), 0, 0);
  transition: transform 0.56s var(--ease-out);
  position: relative;
}

.forward-word::after {
  content: attr(data-echo);
  position: absolute;
  top: 0;
  left: 0;
  color: var(--orange);
  opacity: 0.18;
  transform: translate3d(calc(var(--interaction, 0) * 32px - 6px), 0, 0);
  filter: blur(1.5px);
  pointer-events: none;
  z-index: -1;
  transition: transform 0.56s var(--ease-out);
}

/* Title muted part (slightly desaturated) */
.hero-title-muted {
  color: var(--title-tone);
  font-weight: 400;
  transition: color 0.56s var(--ease-out);
}

/* Persistent geometry: fixed, visible on every section */
.hero__geometry {
  position: fixed;
  top: 52%;
  right: clamp(-430px, -19vw, -180px);
  z-index: 1;
  width: clamp(820px, 74vw, 1320px);
  aspect-ratio: 1 / 1;
  pointer-events: none;
  opacity: calc(var(--geometry-opacity) + var(--geometry-interaction) * 0.04);
  transform: translate3d(0, calc(-50% + var(--geometry-follow-y)), 0)
    rotate(calc(-7deg + var(--geometry-tilt)));
  transform-origin: 50%;
  transition: color 0.65s, opacity 0.7s, transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}

.hero__geometry.kinetic-geometry-theme-light {
  opacity: calc(0.07 + var(--geometry-interaction) * 0.04);
}

.hero__geometry::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 60%;
  height: 60%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(255, 106, 51, 0.10), transparent 65%);
  filter: blur(28px);
  pointer-events: none;
  animation: geometry-breathe 6s var(--ease-in-out) infinite;
  z-index: -1;
}

@keyframes geometry-breathe {
  0%, 100% { opacity: 0.7; transform: translate(-50%, -50%) scale(1); }
  50%      { opacity: 1;   transform: translate(-50%, -50%) scale(1.15); }
}

.hero__geometry svg {
  width: 100%;
  height: 100%;
  display: block;
  overflow: visible;
}

@keyframes geometry-idle-float {
  0%   { transform: translateY(calc(-50% - 12px)) rotate(-1.5deg) scale(1); }
  50%  { transform: translateY(calc(-50% + 12px)) rotate(1.5deg)  scale(1.03); }
  100% { transform: translateY(calc(-50% - 12px)) rotate(-1.5deg) scale(1); }
}

[data-geometry].is-interacting,
[data-geometry].is-ripple-peak {
  animation: none;
}

/* Card hover triggers a brief attention pulse on geometry */
[data-geometry].card-pulse {
  --geometry-interaction: 0.5;
  animation: geometry-card-pulse 0.7s var(--ease-out);
}

@keyframes geometry-card-pulse {
  0%   { transform: translateY(calc(-50% - 12px)) scale(1); }
  40%  { transform: translateY(calc(-50% - 12px)) scale(1.04); }
  100% { transform: translateY(calc(-50% - 12px)) scale(1); }
}

@media (max-width: 1180px) {
  .hero__geometry {
    width: 1040px;
    top: 61%;
    right: -530px;
    opacity: calc(var(--geometry-opacity) * 0.72 + var(--geometry-interaction) * 0.025);
  }
  .hero__geometry.kinetic-geometry-theme-light {
    opacity: calc(0.05 + var(--geometry-interaction) * 0.025);
  }
}

@media (max-width: 620px) {
  .hero__geometry {
    width: 760px;
    top: 58%;
    right: -455px;
    opacity: calc(var(--geometry-opacity) * 0.62);
  }
  .hero__geometry.kinetic-geometry-theme-light {
    opacity: 0.045;
  }
}

/* Make the geometry feel more alive — boost the visible orbit speed
   by reducing the pathLength scaling. The rings already carry
   per-ring --ring-duration, so we just need to make the stroke more
   contrasted. */
.kinetic-geometry-theme-light .kinetic-geometry-ring {
  filter: drop-shadow(0 0 1px rgba(17, 20, 23, 0.05));
}

.kinetic-geometry-theme-dark .kinetic-geometry-ring {
  filter: drop-shadow(0 0 2px rgba(250, 248, 245, 0.08));
}

/* ==========================================================================
   Directional reveal (down vs up scroll)
   ========================================================================== */
[data-reveal].is-above:not(.is-visible) { transform: translateY(calc(var(--reveal-y) * -0.4)); }
[data-reveal].is-below:not(.is-visible) { transform: translateY(var(--reveal-y)); }
[data-reveal-direction="up"]:not(.is-visible) { transition-delay: 0ms !important; }

/* ==========================================================================
   Reveal-on-scroll (driven by app.js IntersectionObserver)
   ========================================================================== */
[data-reveal] {
  --reveal-y: 18px;
  opacity: 0;
  transform: translateY(var(--reveal-y));
  transition:
    opacity 0.8s var(--ease-out),
    transform 0.8s var(--ease-out);
  transition-delay: calc(var(--reveal-index, 0) * 70ms);
  will-change: opacity, transform;
}

[data-reveal="title"]  { --reveal-y: 24px; }
[data-reveal="lede"]   { --reveal-y: 14px; }
[data-reveal="card"]   { --reveal-y: 28px; }
[data-reveal="meta"]   { --reveal-y: 8px;  }

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Header over hero: subtle color shift */
.site-header.is-over-hero { background: rgba(250, 248, 245, 0.92); }

/* ==========================================================================
   Shared responsive polish — unified card grids & spacing on smaller screens
   ========================================================================== */
@media (max-width: 860px) {
  /* Stack section heads vertically with a consistent gap */
  .section { padding-block: clamp(56px, 10vw, 88px); }
  .role-grid { row-gap: 12px; }

  /* Keep card interiors breathable on small screens */
  .card, .product-card, .role-card { padding: 22px 20px; }
}

@media (max-width: 620px) {
  /* Single-column momentum: tighten card gaps and keep hero copy legible */
  .product-grid, .role-grid { row-gap: 10px; }
  .capability-list { grid-template-columns: 1fr; }
  .section-head { margin-bottom: 28px; gap: 6px; }
}

/* ==========================================================================
   Print fallback
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .kinetic-geometry-ring,
  .kinetic-geometry-shell {
    animation: none !important;
  }
  .hero__geometry {
    transform: translateY(-50%) rotate(-7deg) !important;
  }
  .hero__visual img,
  .hero__visual-stage::before,
  .hero__spec {
    animation: none !important;
  }
  .hero__spec { opacity: 1; }
}