:root {
  --white: #fff;
  --soft: #f5f5f7;
  --soft-2: #fbfbfd;
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --blue: #0066cc;
  --blue-bright: #0071e3;
  --teal: #00a5a7;
  --green: #38a169;
  --orange: #d95d45;
  --line: rgba(0, 0, 0, .09);
  --width: 1180px;
  --wide: 1320px;
  --radius: 32px;
  --glass-fill: rgba(255, 255, 255, .58);
  --glass-fill-strong: rgba(255, 255, 255, .76);
  --glass-edge: rgba(255, 255, 255, .78);
  --glass-shadow: 0 8px 24px rgba(15, 23, 42, .08), inset 0 1px 0 rgba(255, 255, 255, .86), inset 0 -1px 0 rgba(0, 0, 0, .045);
  --skeleton-base: #e9edf3;
  --skeleton-shine: rgba(255, 255, 255, .78);
}
html { color-scheme: light; }
html[data-theme="dark"] {
  color-scheme: dark;
  --white: #000;
  --soft: #1c1c1e;
  --soft-2: #09090b;
  --ink: #f5f5f7;
  --muted: #a1a1a6;
  --line: rgba(255, 255, 255, .12);
  --blue: #2997ff;
  --blue-bright: #0a84ff;
  --glass-fill: rgba(46, 46, 50, .55);
  --glass-fill-strong: rgba(54, 54, 58, .72);
  --glass-edge: rgba(255, 255, 255, .18);
  --glass-shadow: 0 10px 30px rgba(0, 0, 0, .3), inset 0 1px 0 rgba(255, 255, 255, .17), inset 0 -1px 0 rgba(0, 0, 0, .32);
  --skeleton-base: #20242a;
  --skeleton-shine: rgba(255, 255, 255, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 56px; }
body {
  margin: 0;
  min-width: 280px;
  overflow-x: hidden;
  background: var(--white);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
img[data-skeleton] {
  background: linear-gradient(100deg, var(--skeleton-base) 30%, var(--skeleton-shine) 48%, var(--skeleton-base) 66%);
  background-size: 220% 100%;
  animation: media-skeleton 1.35s ease-in-out infinite;
}
img[data-skeleton].is-loaded { background: transparent; animation: none; }
h1, h2, h3, p { text-wrap: balance; }
.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 1000;
  padding: 10px 16px;
  border-radius: 10px;
  background: var(--ink);
  color: var(--white);
}
.skip-link:focus { top: 12px; }
.scroll-progress {
  --scroll-progress: 0;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 160;
  width: 100%;
  height: 2px;
  transform: scaleX(var(--scroll-progress));
  transform-origin: left center;
  background: linear-gradient(90deg, #1677ff, #12aaa3, #4caf68);
  box-shadow: 0 0 12px rgba(0, 113, 227, .28);
  pointer-events: none;
}

/* Defer layout and painting work for content that starts below the fold. */
.product-intro,
.product-showcase > .product-row,
.services-wrap,
.process,
.about,
.contact,
.site-footer {
  content-visibility: auto;
  contain-intrinsic-size: auto 760px;
}

/* Apple-style global navigation: quiet, compact and translucent. */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  height: 48px;
  padding: 0 max(24px, calc((100% - var(--width)) / 2));
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  border-bottom: 1px solid rgba(0, 0, 0, .045);
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.site-header.is-scrolled { border-bottom-color: rgba(0, 0, 0, .07); background: rgba(255, 255, 255, .92); box-shadow: 0 8px 24px rgba(0, 0, 0, .045); }
.brand {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.brand > span:last-child { display: grid; line-height: 1; }
.brand b { font-size: 15px; letter-spacing: -.01em; }
.brand small { display: none; }
.brand-mark { width: 27px; height: 27px; display: grid; place-items: center; }
.brand-mark img { width: 100%; height: 100%; object-fit: contain; transition: transform .45s cubic-bezier(.2, .8, .2, 1); }
.brand:hover .brand-mark img { transform: rotate(12deg) scale(1.06); }
.desktop-nav { display: flex; align-items: center; gap: clamp(8px, 1.3vw, 20px); }
.desktop-nav a {
  --glass-x: 50%;
  --glass-y: 0%;
  position: relative;
  isolation: isolate;
  padding: 7px 12px;
  border-radius: 999px;
  color: #27272a;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: -.005em;
  border: 1px solid transparent;
  transition: color .24s ease, transform .3s cubic-bezier(.2, .8, .2, 1), letter-spacing .3s ease, border-color .25s ease, box-shadow .3s ease;
}
.desktop-nav a::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -1px;
  border-radius: inherit;
  background:
    radial-gradient(circle at var(--glass-x) var(--glass-y), rgba(255, 255, 255, .92), transparent 42%),
    linear-gradient(180deg, var(--glass-fill-strong), var(--glass-fill));
  opacity: 0;
  transform: translateY(3px) scale(.88);
  filter: blur(2px);
  backdrop-filter: blur(20px) saturate(190%);
  -webkit-backdrop-filter: blur(20px) saturate(190%);
  transition: opacity .25s ease, transform .32s cubic-bezier(.2, .8, .2, 1), filter .32s ease, background .2s ease;
}
.desktop-nav a::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  width: 12px;
  height: 2px;
  border-radius: 999px;
  background: var(--blue);
  opacity: 0;
  transform: translateX(-50%) scaleX(.2);
  transition: opacity .25s ease, transform .32s cubic-bezier(.2, .8, .2, 1);
}
.desktop-nav a:hover, .desktop-nav a:focus-visible, .desktop-nav a.is-active { border-color: var(--glass-edge); box-shadow: var(--glass-shadow); }
.desktop-nav a:hover, .desktop-nav a:focus-visible { color: var(--blue); transform: translateY(-1px) scale(1.015); letter-spacing: .01em; }
.desktop-nav a:active { transform: translateY(0) scale(.97); }
.desktop-nav a:hover::before, .desktop-nav a:focus-visible::before, .desktop-nav a.is-active::before { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); }
.desktop-nav a:hover::after, .desktop-nav a:focus-visible::after, .desktop-nav a.is-active::after { opacity: 1; transform: translateX(-50%) scaleX(1); }
.desktop-nav a.is-active { color: var(--blue); }
.header-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 8px;
}
.preference-control {
  --glass-x: 50%;
  --glass-y: 0%;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  height: 30px;
  padding: 0 8px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: 1px solid var(--glass-edge);
  border-radius: 999px;
  background: linear-gradient(180deg, var(--glass-fill-strong), var(--glass-fill));
  color: #3a3a3c;
  box-shadow: var(--glass-shadow);
  backdrop-filter: blur(22px) saturate(190%);
  -webkit-backdrop-filter: blur(22px) saturate(190%);
  transition: border-color .25s ease, background .25s ease, transform .28s cubic-bezier(.2,.8,.2,1), box-shadow .3s ease;
}
.preference-control::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(circle at var(--glass-x) var(--glass-y), rgba(255, 255, 255, .94), transparent 48%);
  opacity: .72;
  pointer-events: none;
  transition: opacity .25s ease;
}
.preference-control::after {
  content: "";
  position: absolute;
  inset: -40% auto -40% -42%;
  width: 36%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.72), transparent);
  transform: skewX(-18deg) translateX(-180%);
  pointer-events: none;
  transition: transform .62s cubic-bezier(.2,.8,.2,1);
}
.preference-control:hover { transform: translateY(-2px) scale(1.015); border-color: rgba(0, 102, 204, .24); background: linear-gradient(180deg, rgba(255,255,255,.88), rgba(255,255,255,.58)); box-shadow: 0 12px 28px rgba(0, 102, 204, .11), inset 0 1px 0 #fff, inset 0 -1px 0 rgba(0,0,0,.04); }
.preference-control:hover::after { transform: skewX(-18deg) translateX(520%); }
.preference-control:focus-within { outline: 3px solid rgba(0, 113, 227, .16); outline-offset: 2px; }
.preference-control:active { transform: translateY(0) scale(.965); }
.control-icon { min-width: 14px; color: var(--blue); font-size: 12px; font-weight: 700; text-align: center; }
.preference-control select {
  width: auto;
  max-width: 92px;
  padding: 0 14px 0 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  font-size: 11px;
  cursor: pointer;
  color-scheme: light;
}
.preference-control select option { background: #fff; color: #1d1d1f; }
.language-control select { max-width: 76px; }
.theme-control select { max-width: 86px; }
.header-cta {
  --glass-x: 50%;
  --glass-y: 0%;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  justify-self: end;
  padding: 5px 12px 6px;
  border: 1px solid rgba(255, 255, 255, .52);
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(18, 137, 255, .94), rgba(0, 101, 219, .9));
  color: #fff;
  font-size: 12px;
  line-height: 1;
  box-shadow: 0 8px 22px rgba(0, 113, 227, .23), inset 0 1px 0 rgba(255,255,255,.66), inset 0 -1px 0 rgba(0,50,130,.28);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  transition: transform .28s cubic-bezier(.2,.8,.2,1), background .25s ease, box-shadow .3s ease;
}
.header-cta::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(circle at var(--glass-x) var(--glass-y), rgba(255,255,255,.76), transparent 46%);
  opacity: .5;
  pointer-events: none;
}
.header-cta::after {
  content: "";
  position: absolute;
  inset: -45% auto -45% -45%;
  width: 34%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.82), transparent);
  transform: skewX(-18deg) translateX(-180%);
  pointer-events: none;
  transition: transform .62s cubic-bezier(.2,.8,.2,1);
}
.header-cta:hover { transform: translateY(-2px) scale(1.025); background: linear-gradient(180deg, rgba(41,151,255,.96), rgba(0,102,221,.92)); box-shadow: 0 13px 30px rgba(0, 113, 227, .3), inset 0 1px 0 rgba(255,255,255,.78), inset 0 -1px 0 rgba(0,50,130,.3); }
.header-cta:hover::after { transform: skewX(-18deg) translateX(560%); }
.header-cta:focus-visible { outline: 3px solid rgba(0, 113, 227, .2); outline-offset: 2px; }
.header-cta:active { transform: translateY(0) scale(.96); box-shadow: 0 4px 12px rgba(0,113,227,.2), inset 0 2px 4px rgba(0,51,130,.24); }
.header-cta span { margin-left: 3px; transition: transform .25s ease; }
.header-cta:hover span { transform: translate(2px, -2px); }
.mobile-menu { display: none; }

.back-to-top {
  --page-progress: 0;
  position: fixed;
  right: clamp(18px, 2.6vw, 38px);
  bottom: max(22px, env(safe-area-inset-bottom));
  z-index: 95;
  width: 50px;
  height: 50px;
  padding: 0;
  display: grid;
  place-items: center;
  border: 1px solid rgba(0, 0, 0, .09);
  border-radius: 50%;
  background: rgba(255, 255, 255, .86);
  color: #1d1d1f;
  box-shadow: 0 12px 34px rgba(0, 0, 0, .13);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px) scale(.84);
  transition: opacity .28s ease, visibility .28s ease, transform .4s cubic-bezier(.2, .9, .25, 1.2), background .25s ease, box-shadow .25s ease;
}
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }
.back-to-top:hover, .back-to-top:focus-visible { background: #fff; transform: translateY(-3px) scale(1.04); box-shadow: 0 16px 38px rgba(0, 0, 0, .17); }
.back-to-top:active { transform: translateY(0) scale(.95); }
.back-to-top-progress { position: absolute; inset: 0; width: 100%; height: 100%; transform: rotate(-90deg); }
.back-to-top-progress circle { fill: none; stroke-width: 1.7; }
.back-to-top-track { stroke: rgba(0, 0, 0, .08); }
.back-to-top-value {
  stroke: var(--blue-bright);
  stroke-linecap: round;
  stroke-dasharray: 1;
  stroke-dashoffset: calc(1 - var(--page-progress));
  transition: stroke-dashoffset .1s linear;
}
.back-to-top-arrow { position: relative; font-size: 20px; font-weight: 500; line-height: 1; transition: transform .3s cubic-bezier(.2, .8, .2, 1); }
.back-to-top.is-visible .back-to-top-arrow { animation: back-top-ready .55s cubic-bezier(.2, .8, .2, 1); }
.back-to-top:hover .back-to-top-arrow, .back-to-top:focus-visible .back-to-top-arrow { transform: translateY(-3px); }

/* Hero */
.hero {
  width: 100%;
  min-height: 940px;
  padding: 105px 24px 42px;
  overflow: hidden;
  text-align: center;
  background: var(--soft-2);
}
.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  flex-direction: column;
}
.eyebrow {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -.01em;
}
h1 {
  max-width: 980px;
  margin: 0;
  font-size: clamp(54px, 6vw, 86px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -.068em;
}
h1 em {
  color: transparent;
  background: linear-gradient(90deg, #1172e8 0%, #16a3a1 49%, #4eaf68 100%);
  background-clip: text;
  -webkit-background-clip: text;
  font-style: normal;
}
.hero-lead {
  max-width: 680px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: clamp(21px, 2vw, 28px);
  line-height: 1.45;
  letter-spacing: -.024em;
}
.hero-actions {
  margin-top: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--blue);
  font-size: 19px;
  white-space: nowrap;
  transition: opacity .2s ease;
}
.text-link:hover { text-decoration: underline; }
.text-link span { font-size: 1.25em; line-height: 1; transition: transform .25s ease; }
.text-link:hover span { transform: translateX(4px); }
.hero-system {
  position: relative;
  width: min(1060px, 100%);
  height: 435px;
  margin: 52px auto 0;
  display: grid;
  place-items: center;
}
.hero-glow {
  position: absolute;
  width: min(720px, 84vw);
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(0, 113, 227, .2), rgba(21, 164, 161, .1) 38%, transparent 72%);
  filter: blur(7px);
  animation: glow-breathe 7s ease-in-out infinite;
}
.hero-logo-stage {
  position: relative;
  width: clamp(210px, 25vw, 330px);
  height: 270px;
  display: grid;
  place-items: center;
  animation: logo-float 6s ease-in-out infinite;
}
.hero-logo-stage::before {
  content: "";
  position: absolute;
  inset: 20px -24px;
  border: 1px solid rgba(0, 113, 227, .16);
  border-radius: 50%;
  animation: orbit-spin 18s linear infinite;
}
.hero-logo-stage::after {
  content: "";
  position: absolute;
  top: 30px;
  right: 18px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #1c8cf3;
  box-shadow: -286px 118px 0 2px rgba(16, 178, 165, .78), -104px 220px 0 -1px rgba(66, 176, 102, .76);
}
.hero-logo {
  position: relative;
  z-index: 1;
  width: 76%;
  height: 76%;
  object-fit: contain;
  filter: drop-shadow(0 36px 46px rgba(0, 84, 156, .14));
}
.system-products {
  position: absolute;
  z-index: 2;
  right: 0;
  bottom: 0;
  left: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.system-products a {
  position: relative;
  overflow: hidden;
  min-height: 98px;
  padding: 20px 24px;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  text-align: left;
  border: 1px solid rgba(0, 0, 0, .055);
  border-radius: 22px;
  background: rgba(255, 255, 255, .78);
  box-shadow: 0 10px 35px rgba(0, 0, 0, .05);
  backdrop-filter: blur(18px);
  transition: transform .3s ease, box-shadow .3s ease;
}
.system-products a::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 25%, rgba(255, 255, 255, .68) 50%, transparent 75%);
  transform: translateX(-135%);
  transition: transform .7s ease;
  pointer-events: none;
}
.system-products a:hover { transform: translateY(-4px); box-shadow: 0 18px 42px rgba(0, 0, 0, .08); }
.system-products a:hover::after { transform: translateX(135%); }
.system-products b { align-self: end; font-size: 16px; }
.system-products small { align-self: start; color: var(--muted); font-size: 13px; }
.system-products span { grid-area: 1 / 2 / 3 / 3; align-self: center; color: var(--blue); font-size: 28px; }

/* Shared sections */
.section {
  width: min(calc(100% - 48px), var(--width));
  margin: 0 auto;
  padding: clamp(108px, 10vw, 160px) 0;
}
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr);
  gap: 9%;
  align-items: end;
}
.section-head h2 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(40px, 4.4vw, 58px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -.05em;
}
.section-head > p {
  max-width: 500px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
  letter-spacing: -.01em;
}
.product-intro { text-align: center; }
.product-intro .section-head { display: block; }
.product-intro .section-head h2 { margin: 0 auto; max-width: 900px; }
.product-intro .section-head > p { margin: 28px auto 0; max-width: 720px; }
.product-mini-grid {
  margin-top: 68px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  text-align: left;
}
.product-mini-grid article {
  min-height: 246px;
  padding: 30px;
  display: flex;
  flex-direction: column;
  border-radius: 26px;
  background: var(--soft);
  transition: transform .35s cubic-bezier(.2, .8, .2, 1), box-shadow .35s ease;
}
.product-mini-grid article:hover { transform: translateY(-7px); box-shadow: 0 20px 52px rgba(0, 0, 0, .08); }
.product-mini-grid article:nth-child(2) { background: #f1f7ff; }
.product-mini-grid article:nth-child(3) { background: #fff4ef; }
.product-mini-grid span { color: var(--muted); font-size: 13px; font-weight: 600; }
.product-mini-grid h3 { margin: auto 0 12px; font-size: 25px; line-height: 1.2; letter-spacing: -.03em; }
.product-mini-grid p { margin: 0; color: var(--muted); line-height: 1.65; }

/* Large product billboards */
.product-showcase { padding: 12px 24px 116px; background: var(--white); }
.product-row {
  position: relative;
  width: min(100%, var(--wide));
  min-height: 900px;
  margin: 12px auto 0;
  padding: 92px 7% 0;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto 1fr;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--soft);
  transition: box-shadow .45s ease;
}
.product-row:hover { box-shadow: 0 28px 80px rgba(0, 0, 0, .08); }
.product-row.reverse { grid-template-columns: 1fr; }
.product-row#product-business { background: #000; color: #f5f5f7; }
.product-row#product-mail { background: linear-gradient(180deg, #fff8f5 0%, #f5f5f7 68%); }
.product-row#product-opc { background: linear-gradient(180deg, #fff7f4 0%, #f2ede9 100%); }
.product-copy {
  grid-row: 1;
  max-width: 930px;
  margin: 0 auto;
  padding: 0;
  display: flex;
  align-items: center;
  flex-direction: column;
  text-align: center;
}
.product-number {
  margin-bottom: 20px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
}
.product-row#product-business .product-number { color: #a1a1a6; }
.manta-wordmark { width: min(255px, 70%); height: auto; }
.product-row#product-business .manta-wordmark { filter: invert(1); }
.fiimeopc-logo { width: min(230px, 65%); height: auto; }
.fiimeopc-logo-dark { display: none; }
.mail-brand { display: flex; align-items: center; gap: 10px; color: #b54832; font-size: 20px; font-weight: 700; }
.mail-brand img { width: 40px; height: 40px; object-fit: contain; }
.product-copy h2 {
  margin: 18px 0 16px;
  font-size: clamp(42px, 4.5vw, 62px);
  font-weight: 700;
  line-height: 1.07;
  letter-spacing: -.055em;
}
.product-lead {
  max-width: 770px;
  margin: 0;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.58;
  letter-spacing: -.012em;
}
.product-row#product-business .product-lead { color: #a1a1a6; }
.feature-list {
  width: 100%;
  max-width: 860px;
  margin: 34px 0 24px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  list-style: none;
}
.feature-list li {
  min-height: 96px;
  padding: 17px 18px;
  display: flex;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: rgba(255, 255, 255, .52);
  transition: transform .25s ease, background .25s ease, border-color .25s ease;
}
.feature-list li:hover { transform: translateY(-3px); border-color: rgba(0, 102, 204, .2); background: rgba(255, 255, 255, .82); }
.product-row#product-business .feature-list li:hover { border-color: rgba(101, 181, 255, .38); background: rgba(255, 255, 255, .11); }
.product-row#product-business .feature-list li { border-color: rgba(255, 255, 255, .13); background: rgba(255, 255, 255, .07); }
.feature-list b { font-size: 15px; }
.feature-list span { color: var(--muted); font-size: 13px; line-height: 1.35; }
.product-row#product-business .feature-list span { color: #a1a1a6; }
.product-copy .text-link { font-size: 17px; }
.product-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; }
.product-row#product-opc .product-actions .button.primary { background: #d9573f; }
.product-row#product-opc .product-actions .button.primary:hover { background: #c94d37; box-shadow: 0 10px 24px rgba(217, 87, 63, .22); }
.button {
  min-height: 44px;
  padding: 10px 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  transition: transform .25s ease, background .25s ease, box-shadow .25s ease;
}
.button.primary { background: var(--blue-bright); color: #fff; }
.button.primary:hover { background: #0077ed; }
.button:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0, 113, 227, .18); }
.product-visual {
  grid-row: 2;
  width: min(1060px, 100%);
  min-width: 0;
  margin: 62px auto 0;
  padding: 0;
  align-self: end;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  background: transparent;
}
.product-row.reverse .product-visual { order: initial; }
.window-bar {
  width: 100%;
  min-height: 38px;
  padding: 0 14px;
  display: flex;
  align-items: center;
  gap: 7px;
  color: #8a8a8f;
  border: 1px solid rgba(0, 0, 0, .12);
  border-bottom: 0;
  border-radius: 14px 14px 0 0;
  background: rgba(255, 255, 255, .92);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .1em;
}
.product-row#product-business .window-bar { border-color: rgba(255, 255, 255, .14); background: #1d1d1f; color: #86868b; }
.window-bar > span { width: 7px; height: 7px; border-radius: 50%; background: #c7c7cc; }
.window-bar small { margin-left: auto; }
.product-visual > img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 560px;
  object-fit: cover;
  object-position: top left;
  border: 1px solid rgba(0, 0, 0, .12);
  box-shadow: 0 26px 70px rgba(0, 0, 0, .18);
  transform: translate3d(0, var(--media-shift, 0px), 0) scale(1.012);
  transform-origin: center top;
  transition: transform .3s cubic-bezier(.2, .8, .2, 1), filter .35s ease;
  will-change: transform;
}
.product-row:hover .product-visual > img { filter: saturate(1.04) contrast(1.015); }
.product-row#product-business .product-visual > img { max-height: none; border-color: rgba(255, 255, 255, .14); box-shadow: 0 30px 80px rgba(0, 0, 0, .55); }

/* Enterprise services */
.services-wrap { background: var(--soft); }
.services { width: min(calc(100% - 48px), var(--wide)); }
.service-grid {
  margin-top: 72px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.service-card {
  --mx: 50%;
  --my: 50%;
  --accent: var(--blue);
  min-height: 390px;
  padding: clamp(28px, 4vw, 50px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  border-radius: 30px;
  background: var(--white);
  box-shadow: 0 1px 0 rgba(0, 0, 0, .025);
  transition: transform .38s cubic-bezier(.2, .8, .2, 1), box-shadow .38s ease;
}
.service-card::before {
  content: "";
  position: absolute;
  width: 240px;
  height: 240px;
  top: -150px;
  right: -90px;
  border-radius: 50%;
  background: var(--accent);
  filter: blur(70px);
  opacity: .2;
  transition: transform .55s ease, opacity .55s ease;
}
.service-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(320px circle at var(--mx) var(--my), color-mix(in srgb, var(--accent) 13%, transparent), transparent 68%);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease;
}
.service-card:hover { transform: translateY(-8px); box-shadow: 0 24px 60px rgba(0, 0, 0, .09); }
.service-card:hover::before { transform: scale(1.22); opacity: .28; }
.service-card:hover::after { opacity: 1; }
.service-card > * { position: relative; z-index: 1; }
.accent-blue { --accent: #1677ff; }
.accent-cyan { --accent: #00a5a7; }
.accent-orange { --accent: #d95d45; }
.accent-violet { --accent: #7a67d8; }
.service-top { position: relative; display: flex; justify-content: space-between; color: var(--accent); font-size: 12px; font-weight: 700; letter-spacing: .08em; }
.service-top b { font-size: 15px; font-weight: 600; }
.service-card h3 { position: relative; z-index: 1; margin: 88px 0 14px; font-size: clamp(30px, 3vw, 42px); line-height: 1.1; letter-spacing: -.045em; }
.service-card > p { max-width: 520px; margin: 0; color: var(--muted); font-size: 18px; line-height: 1.6; }
.service-card ul {
  margin: auto 0 0;
  padding: 28px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-top: 1px solid var(--line);
  list-style: none;
  color: #55555a;
  font-size: 13px;
}
.service-card li { padding: 7px 11px; border-radius: 999px; background: var(--soft); }

/* Process */
.process { background: var(--white); }
.process-steps {
  margin: 72px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  list-style: none;
}
.process-steps li {
  min-height: 260px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  border-radius: 24px;
  background: var(--soft);
  transition: transform .3s ease, background .3s ease, box-shadow .3s ease;
}
.process-steps li:hover { transform: translateY(-6px); background: #f8f8fa; box-shadow: 0 18px 46px rgba(0, 0, 0, .075); }
.process-steps span { color: var(--blue); font-size: 13px; font-weight: 700; }
.process-steps h3 { margin: auto 0 10px; font-size: 24px; letter-spacing: -.03em; }
.process-steps p { margin: 0; color: var(--muted); line-height: 1.6; }

/* About */
.about {
  width: min(calc(100% - 48px), var(--wide));
  min-height: 720px;
  margin-bottom: 120px;
  padding: clamp(64px, 8vw, 110px);
  display: grid;
  grid-template-columns: .72fr 1.28fr;
  gap: 9%;
  align-items: center;
  border-radius: var(--radius);
  background: #000;
  color: #f5f5f7;
}
.about-mark {
  position: relative;
  width: 100%;
  max-width: 420px;
  aspect-ratio: 1 / 1;
  justify-self: center;
  align-self: center;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(27, 137, 255, .22), rgba(0, 165, 167, .1) 38%, transparent 70%);
}
.about-mark::after { content: ""; position: absolute; inset: 18%; border: 1px solid rgba(101, 181, 255, .2); border-radius: 50%; animation: about-ring 9s ease-in-out infinite; }
.about-mark img { position: relative; z-index: 1; width: 48%; height: auto; max-width: 48%; max-height: none; aspect-ratio: 667 / 607; object-fit: contain; filter: drop-shadow(0 20px 50px rgba(0, 116, 255, .2)); animation: logo-float 6.5s ease-in-out infinite reverse; }
.about .eyebrow { color: #a1a1a6; }
.about-copy h2 { max-width: 760px; margin: 0; font-size: clamp(40px, 4.4vw, 58px); line-height: 1.1; letter-spacing: -.05em; }
.about-copy > p:not(.eyebrow) { max-width: 760px; margin: 28px 0 0; color: #a1a1a6; font-size: 19px; line-height: 1.75; }
.about-principles { margin-top: 48px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.about-principles div { min-height: 126px; padding: 18px; display: flex; flex-direction: column; border-radius: 18px; background: rgba(255, 255, 255, .075); transition: transform .28s ease, background .28s ease; }
.about-principles div:hover { transform: translateY(-4px); background: rgba(255, 255, 255, .11); }
.about-principles span { color: #65b5ff; font-size: 12px; font-weight: 700; }
.about-principles b { margin-top: auto; }
.about-principles small { color: #a1a1a6; }

/* Contact and footer */
.contact { padding: 0 24px 24px; background: var(--white); }
.contact-grid {
  width: min(100%, var(--wide));
  min-height: 520px;
  margin: 0 auto;
  padding: clamp(70px, 8vw, 112px);
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 10%;
  align-items: center;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #086dd4 0%, #008caa 55%, #1f8d63 100%);
  background-size: 180% 180%;
  color: #fff;
  animation: contact-gradient 12s ease-in-out infinite alternate;
}
.contact .eyebrow { color: rgba(255, 255, 255, .75); }
.contact h2 { max-width: 720px; margin: 0; font-size: clamp(42px, 4.6vw, 62px); line-height: 1.1; letter-spacing: -.05em; }
.contact-actions { display: flex; align-items: flex-start; flex-direction: column; gap: 20px; }
.button.light { min-width: 190px; background: #fff; color: #075cae; }
.button.light:hover { background: #f5f5f7; box-shadow: 0 14px 32px rgba(0, 44, 94, .18); }
.light-link { color: #fff; font-size: 17px; }
.contact-actions p { margin: 10px 0 0; color: rgba(255, 255, 255, .78); font-size: 14px; line-height: 1.7; }
.contact-actions p b { color: #fff; font-size: 17px; }
.contact-directory { width: min(100%, 470px); display: grid; gap: 12px; }
.contact-wechat,
.contact-partners {
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 22px;
  background: rgba(0, 32, 63, .16);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .12);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.contact-wechat { padding: 13px; display: flex; align-items: center; gap: 18px; }
.contact-wechat img { width: 112px; height: 112px; flex: 0 0 auto; padding: 6px; border-radius: 16px; background: #fff; object-fit: contain; }
.contact-wechat div { display: grid; align-content: center; }
.contact-wechat span,
.contact-partners > span { color: rgba(255, 255, 255, .7); font-size: 11px; font-weight: 700; letter-spacing: .08em; }
.contact-wechat b { margin-top: 3px; color: #fff; font-size: 21px; letter-spacing: -.02em; }
.contact-wechat small { margin-top: 8px; color: rgba(255, 255, 255, .72); font-size: 12px; }
.contact-partners { padding: 16px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.contact-partners > span { grid-column: 1 / -1; }
.contact-partners a { padding: 12px 13px; display: grid; gap: 3px; border-radius: 14px; background: rgba(255, 255, 255, .1); transition: transform .25s ease, background .25s ease; }
.contact-partners a:hover { transform: translateY(-2px); background: rgba(255, 255, 255, .17); }
.contact-partners small { color: rgba(255, 255, 255, .68); }
.contact-partners b { color: #fff; font-size: 15px; letter-spacing: .015em; }
.site-footer {
  width: min(calc(100% - 48px), var(--width));
  margin: 0 auto;
  padding: 58px 0 26px;
}
.footer-brand { display: flex; align-items: center; gap: 14px; }
.footer-brand img { width: 40px; height: 40px; object-fit: contain; }
.footer-brand div { display: grid; }
.footer-brand b { font-size: 15px; }
.footer-brand span { margin-top: 4px; color: var(--muted); font-size: 9px; letter-spacing: .04em; }
.footer-contact {
  margin-top: 38px;
  padding: 22px;
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
  gap: 22px;
  align-items: stretch;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--soft-2);
}
.footer-wechat { display: flex; align-items: center; gap: 16px; }
.footer-wechat > img { width: 92px; height: 92px; flex: 0 0 auto; padding: 5px; border: 1px solid rgba(0, 0, 0, .06); border-radius: 14px; background: #fff; object-fit: contain; }
.footer-wechat > div { display: grid; }
.footer-wechat span,
.footer-partners > span { color: var(--muted); font-size: 10px; font-weight: 720; letter-spacing: .1em; }
.footer-wechat b { margin-top: 2px; color: var(--ink); font-size: 19px; }
.footer-wechat small { margin-top: 7px; color: var(--muted); font-size: 11px; }
.footer-partners { padding-left: 22px; display: grid; align-content: center; gap: 10px; border-left: 1px solid var(--line); }
.footer-contact-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.footer-contact-list a { padding: 13px 15px; display: grid; gap: 3px; border: 1px solid var(--line); border-radius: 14px; background: var(--product-panel, rgba(255, 255, 255, .7)); transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease; }
.footer-contact-list a:hover { transform: translateY(-2px); border-color: rgba(0, 113, 227, .28); box-shadow: 0 10px 24px rgba(0, 0, 0, .07); }
.footer-contact-list small { color: var(--muted); font-size: 11px; }
.footer-contact-list b { color: var(--ink); font-size: 15px; letter-spacing: .015em; }
.footer-links {
  margin: 44px 0 24px;
  padding: 22px 0;
  display: flex;
  gap: 22px 38px;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: #424245;
  font-size: 12px;
}
.footer-links a:hover { color: var(--blue); }
.footer-bottom { display: flex; justify-content: space-between; color: #86868b; font-size: 11px; }

/* Dark appearance */
html[data-theme="dark"] body { background: #000; }
html[data-theme="dark"] .site-header { border-bottom-color: rgba(255, 255, 255, .07); background: rgba(18, 18, 20, .82); }
html[data-theme="dark"] .site-header.is-scrolled { border-bottom-color: rgba(255, 255, 255, .11); background: rgba(18, 18, 20, .94); box-shadow: 0 8px 28px rgba(0, 0, 0, .28); }
html[data-theme="dark"] .desktop-nav a { color: #e5e5e7; }
html[data-theme="dark"] .desktop-nav a::before {
  background:
    radial-gradient(circle at var(--glass-x) var(--glass-y), rgba(255, 255, 255, .22), transparent 44%),
    linear-gradient(180deg, rgba(62,62,67,.72), rgba(31,31,35,.6));
}
html[data-theme="dark"] .desktop-nav a:hover,
html[data-theme="dark"] .desktop-nav a:focus-visible,
html[data-theme="dark"] .desktop-nav a.is-active { color: #64aaff; }
html[data-theme="dark"] .preference-control { border-color: var(--glass-edge); background: linear-gradient(180deg, var(--glass-fill-strong), var(--glass-fill)); color: #f5f5f7; }
html[data-theme="dark"] .preference-control select { color-scheme: dark; }
html[data-theme="dark"] .preference-control select option { background: #1c1c1e; color: #f5f5f7; }
html[data-theme="dark"] .preference-control::before { background: radial-gradient(circle at var(--glass-x) var(--glass-y), rgba(255,255,255,.32), transparent 48%); opacity: .8; }
html[data-theme="dark"] .preference-control::after { background: linear-gradient(90deg, transparent, rgba(255,255,255,.28), transparent); }
html[data-theme="dark"] .preference-control:hover { border-color: rgba(98, 180, 255, .42); background: linear-gradient(180deg, rgba(72,72,78,.82), rgba(38,38,42,.68)); box-shadow: 0 12px 30px rgba(0,0,0,.36), inset 0 1px 0 rgba(255,255,255,.24), inset 0 -1px 0 rgba(0,0,0,.34); }
html[data-theme="dark"] .back-to-top { border-color: rgba(255, 255, 255, .12); background: rgba(38, 38, 40, .88); color: #f5f5f7; box-shadow: 0 14px 38px rgba(0, 0, 0, .38); }
html[data-theme="dark"] .back-to-top:hover,
html[data-theme="dark"] .back-to-top:focus-visible { background: #303033; box-shadow: 0 18px 44px rgba(0, 0, 0, .5); }
html[data-theme="dark"] .back-to-top-track { stroke: rgba(255, 255, 255, .12); }
html[data-theme="dark"] .hero { background: #09090b; }
html[data-theme="dark"] .hero-glow { background: radial-gradient(ellipse at center, rgba(10, 132, 255, .3), rgba(15, 170, 165, .16) 38%, transparent 72%); }
html[data-theme="dark"] .hero-logo-stage::before { border-color: rgba(41, 151, 255, .25); }
html[data-theme="dark"] .system-products a { border-color: rgba(255, 255, 255, .1); background: rgba(28, 28, 30, .78); box-shadow: 0 14px 38px rgba(0, 0, 0, .32); }
html[data-theme="dark"] .system-products a::after { background: linear-gradient(110deg, transparent 25%, rgba(255, 255, 255, .12) 50%, transparent 75%); }
html[data-theme="dark"] .product-mini-grid article { background: #1c1c1e; }
html[data-theme="dark"] .product-mini-grid article:nth-child(2) { background: #111d2d; }
html[data-theme="dark"] .product-mini-grid article:nth-child(3) { background: #261813; }
html[data-theme="dark"] .product-row#product-business { background: #0b0b0d; }
html[data-theme="dark"] .product-row#product-mail { background: linear-gradient(180deg, #201512 0%, #141416 72%); }
html[data-theme="dark"] .product-row#product-opc { background: linear-gradient(180deg, #251613 0%, #171311 100%); }
html[data-theme="dark"] .fiimeopc-logo-light { display: none; }
html[data-theme="dark"] .fiimeopc-logo-dark { display: block; }
html[data-theme="dark"] .feature-list li { border-color: rgba(255, 255, 255, .12); background: rgba(255, 255, 255, .065); }
html[data-theme="dark"] .feature-list li:hover { border-color: rgba(41, 151, 255, .34); background: rgba(255, 255, 255, .1); }
html[data-theme="dark"] .window-bar { border-color: rgba(255, 255, 255, .12); background: #262628; color: #a1a1a6; }
html[data-theme="dark"] .product-visual > img { border-color: rgba(255, 255, 255, .12); }
html[data-theme="dark"] .services-wrap { background: #111113; }
html[data-theme="dark"] .service-card { background: #1c1c1e; box-shadow: 0 1px 0 rgba(255, 255, 255, .025); }
html[data-theme="dark"] .service-card li { background: #2c2c2e; color: #d1d1d6; }
html[data-theme="dark"] .process { background: #000; }
html[data-theme="dark"] .process-steps li { background: #1c1c1e; }
html[data-theme="dark"] .process-steps li:hover { background: #242426; box-shadow: 0 20px 48px rgba(0, 0, 0, .35); }
html[data-theme="dark"] .about { background: #070708; }
html[data-theme="dark"] .contact { background: #000; }
html[data-theme="dark"] .site-footer { color: #f5f5f7; }
html[data-theme="dark"] .footer-links { color: #d1d1d6; }

/* Entrance motion */
.reveal {
  opacity: 1;
  transform: none;
}
.reveal.is-visible { animation: reveal-in .72s cubic-bezier(.2, .65, .3, 1) var(--reveal-delay, 0ms) backwards; }
@keyframes reveal-in {
  from { opacity: .68; transform: translateY(20px) scale(.992); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes glow-breathe {
  0%, 100% { opacity: .7; transform: scale(.96); }
  50% { opacity: 1; transform: scale(1.08); }
}
@keyframes logo-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
@keyframes orbit-spin { to { transform: rotate(360deg); } }
@keyframes about-ring {
  0%, 100% { transform: scale(.92); opacity: .35; }
  50% { transform: scale(1.08); opacity: .75; }
}
@keyframes contact-gradient {
  0% { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}
@keyframes back-top-ready {
  0% { opacity: 0; transform: translateY(7px); }
  65% { opacity: 1; transform: translateY(-2px); }
  100% { opacity: 1; transform: translateY(0); }
}
@keyframes mobile-nav-in {
  from { opacity: 0; transform: translateY(-7px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes media-skeleton {
  from { background-position: 100% 0; }
  to { background-position: -100% 0; }
}

@media (max-width: 1040px) {
  .site-header { grid-template-columns: 1fr auto auto; gap: 5px; }
  .desktop-nav, .header-cta { display: none; }
  .mobile-menu { display: block; justify-self: end; position: relative; }
  .mobile-menu summary {
    --glass-x: 50%;
    --glass-y: 0%;
    position: relative;
    overflow: hidden;
    width: 34px;
    height: 34px;
    display: grid;
    place-content: center;
    gap: 5px;
    cursor: pointer;
    list-style: none;
    border: 1px solid var(--glass-edge);
    border-radius: 50%;
    background:
      radial-gradient(circle at var(--glass-x) var(--glass-y), rgba(255,255,255,.88), transparent 48%),
      linear-gradient(180deg, var(--glass-fill-strong), var(--glass-fill));
    box-shadow: var(--glass-shadow);
    backdrop-filter: blur(20px) saturate(190%);
    -webkit-backdrop-filter: blur(20px) saturate(190%);
    transition: background .22s ease, transform .25s cubic-bezier(.2, .8, .2, 1), box-shadow .25s ease;
  }
  .mobile-menu summary:hover, .mobile-menu summary:focus-visible { background: radial-gradient(circle at var(--glass-x) var(--glass-y), #fff, transparent 54%), linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.58)); transform: translateY(-1px) scale(1.045); box-shadow: 0 12px 26px rgba(0,113,227,.13), inset 0 1px 0 #fff; }
  .mobile-menu summary:active { transform: scale(.94); }
  .mobile-menu summary::-webkit-details-marker { display: none; }
  .mobile-menu summary span { width: 17px; height: 1px; background: var(--ink); transition: transform .2s ease; }
  .mobile-menu[open] summary span:first-child { transform: translateY(3px) rotate(45deg); }
  .mobile-menu[open] summary span:last-child { transform: translateY(-3px) rotate(-45deg); }
  .mobile-menu nav {
    position: fixed;
    top: 48px;
    right: 0;
    left: 0;
    padding: 20px 24px 28px;
    display: grid;
    background: rgba(255, 255, 255, .96);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 40px rgba(0, 0, 0, .08);
    backdrop-filter: blur(20px);
  }
  .mobile-menu nav a { position: relative; padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 18px; transition: color .22s ease, padding-left .28s cubic-bezier(.2, .8, .2, 1), border-color .22s ease; }
  .mobile-menu nav a::after { content: "↗"; position: absolute; right: 2px; color: var(--blue); opacity: 0; transform: translate(-5px, 5px); transition: opacity .22s ease, transform .28s cubic-bezier(.2, .8, .2, 1); }
  .mobile-menu nav a:hover, .mobile-menu nav a:focus-visible, .mobile-menu nav a.is-active { padding-left: 7px; border-color: rgba(0, 113, 227, .22); color: var(--blue); }
  .mobile-menu nav a:hover::after, .mobile-menu nav a:focus-visible::after, .mobile-menu nav a.is-active::after { opacity: 1; transform: translate(0, 0); }
  .mobile-menu nav a:last-child { border-bottom: 0; }
  .mobile-menu[open] nav a { animation: mobile-nav-in .42s cubic-bezier(.2, .75, .25, 1) both; }
  .mobile-menu[open] nav a:nth-child(2) { animation-delay: 35ms; }
  .mobile-menu[open] nav a:nth-child(3) { animation-delay: 70ms; }
  .mobile-menu[open] nav a:nth-child(4) { animation-delay: 105ms; }
  .mobile-menu[open] nav a:nth-child(5) { animation-delay: 140ms; }
  html[data-theme="dark"] .mobile-menu summary span { background: #f5f5f7; }
  html[data-theme="dark"] .mobile-menu summary { background: radial-gradient(circle at var(--glass-x) var(--glass-y), rgba(255,255,255,.24), transparent 52%), linear-gradient(180deg, rgba(65,65,70,.74), rgba(31,31,35,.62)); }
  html[data-theme="dark"] .mobile-menu summary:hover, html[data-theme="dark"] .mobile-menu summary:focus-visible { background: radial-gradient(circle at var(--glass-x) var(--glass-y), rgba(255,255,255,.36), transparent 52%), linear-gradient(180deg, rgba(76,76,82,.84), rgba(38,38,42,.7)); box-shadow: 0 12px 28px rgba(0,0,0,.38), inset 0 1px 0 rgba(255,255,255,.24); }
  html[data-theme="dark"] .mobile-menu nav { border-bottom-color: rgba(255, 255, 255, .1); background: rgba(18, 18, 20, .97); box-shadow: 0 20px 42px rgba(0, 0, 0, .4); }
  .product-row { min-height: 820px; padding-right: 5%; padding-left: 5%; }
  .about { grid-template-columns: .68fr 1.32fr; gap: 6%; }
}

@media (max-width: 760px) {
  .site-header { padding: 0 12px; }
  .back-to-top { right: 14px; bottom: max(14px, env(safe-area-inset-bottom)); width: 46px; height: 46px; }
  .header-actions { gap: 4px; }
  .preference-control { height: 28px; padding: 0 5px; gap: 2px; }
  .preference-control select { padding-right: 8px; font-size: 10px; }
  .language-control select { max-width: 67px; }
  .theme-control select { max-width: 70px; }
  .control-icon { min-width: 11px; font-size: 10px; }
  .hero { min-height: 820px; padding: 80px 16px 28px; }
  .eyebrow { font-size: 15px; }
  h1 { font-size: clamp(42px, 12.8vw, 58px); letter-spacing: -.055em; }
  .hero-lead { max-width: 530px; margin-top: 22px; font-size: 19px; }
  .hero-actions { margin-top: 22px; gap: 22px; }
  .text-link { font-size: 17px; }
  .hero-system { height: 390px; margin-top: 34px; }
  .hero-logo-stage { width: 200px; height: 190px; transform: translateY(-58px); animation: none; }
  .hero-logo-stage::before { inset: 18px -10px; }
  .hero-logo-stage::after { right: 2px; box-shadow: -174px 80px 0 1px rgba(16, 178, 165, .78), -62px 154px 0 -1px rgba(66, 176, 102, .76); }
  .hero-logo { width: 82%; height: 82%; }
  .hero-glow { height: 240px; transform: translateY(-58px); }
  .system-products { grid-template-columns: 1fr; gap: 8px; }
  .system-products a { min-height: 64px; padding: 11px 16px; border-radius: 17px; }
  .system-products b { font-size: 14px; }
  .system-products small { font-size: 11px; }
  .system-products span { font-size: 22px; }
  .section { width: min(calc(100% - 32px), var(--width)); padding: 92px 0; }
  .section-head { grid-template-columns: 1fr; gap: 26px; }
  .section-head h2 { font-size: clamp(34px, 9.6vw, 44px); }
  .section-head > p { font-size: 16px; }
  .product-intro { padding-top: 88px; }
  .product-intro .section-head > p { margin-top: 22px; }
  .product-mini-grid { margin-top: 48px; grid-template-columns: 1fr; gap: 10px; }
  .product-mini-grid article { min-height: 190px; padding: 24px; border-radius: 22px; }
  .product-showcase { padding: 0 10px 78px; }
  .product-row {
    min-height: 0;
    margin-top: 10px;
    padding: 62px 20px 0;
    border-radius: 26px;
  }
  .product-copy h2 { font-size: clamp(34px, 9.7vw, 45px); }
  .product-lead { font-size: 17px; }
  .feature-list { grid-template-columns: 1fr; gap: 8px; margin-top: 28px; }
  .feature-list li { min-height: 78px; }
  .product-visual { margin-top: 44px; }
  .window-bar { min-height: 31px; padding: 0 9px; }
  .window-bar small { max-width: 62%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .product-visual > img { min-height: 235px; object-fit: cover; object-position: top left; }
  .product-row#product-business .product-visual > img { min-height: 0; }
  .services { width: min(calc(100% - 32px), var(--wide)); }
  .service-grid { margin-top: 48px; grid-template-columns: 1fr; gap: 10px; }
  .service-card { min-height: 350px; padding: 28px; border-radius: 24px; }
  .service-card h3 { margin-top: 68px; font-size: 32px; }
  .service-card > p { font-size: 16px; }
  .process-steps { margin-top: 48px; grid-template-columns: 1fr; gap: 10px; }
  .process-steps li { min-height: 210px; }
  .about {
    width: min(calc(100% - 20px), var(--wide));
    margin-bottom: 82px;
    padding: 70px 24px;
    grid-template-columns: 1fr;
    gap: 48px;
    border-radius: 26px;
  }
  .about-mark { width: min(64vw, 280px); justify-self: center; }
  .about-copy h2 { font-size: clamp(34px, 9.5vw, 44px); }
  .about-copy > p:not(.eyebrow) { font-size: 17px; }
  .about-principles { grid-template-columns: 1fr; gap: 8px; }
  .about-principles div { min-height: 98px; }
  .contact { padding: 0 10px 10px; }
  .contact-grid {
    min-height: 610px;
    padding: 68px 24px;
    grid-template-columns: 1fr;
    gap: 52px;
    border-radius: 26px;
  }
  .contact h2 { max-width: 520px; font-size: clamp(36px, 10vw, 46px); }
  .site-footer { width: min(calc(100% - 32px), var(--width)); padding-top: 48px; }
  .footer-brand { align-items: flex-start; }
  .footer-brand span { max-width: 270px; line-height: 1.5; }
  .footer-contact { grid-template-columns: 1fr; gap: 18px; }
  .footer-partners { padding: 18px 0 0; border-top: 1px solid var(--line); border-left: 0; }
  .footer-bottom { gap: 10px; flex-direction: column; }
}

@media (max-width: 420px) {
  .brand { gap: 5px; }
  .brand-mark { width: 24px; height: 24px; }
  .brand b { font-size: 13px; }
  .theme-control select { max-width: 61px; }
  .contact-partners { grid-template-columns: 1fr; }
  .footer-contact { padding: 18px; }
  .footer-wechat { align-items: flex-start; }
  .footer-wechat > img { width: 82px; height: 82px; }
  .footer-contact-list { grid-template-columns: 1fr; }
}

html[lang="de"] h1,
html[lang="ru"] h1 { font-size: clamp(48px, 5.35vw, 76px); }
html[lang="de"] .contact h2,
html[lang="ru"] .contact h2,
html[lang="fr"] .contact h2 { font-size: clamp(38px, 4vw, 54px); }
html[lang="de"] .about-copy h2,
html[lang="ru"] .about-copy h2,
html[lang="fr"] .about-copy h2 { font-size: clamp(37px, 4vw, 52px); }

@media (max-width: 760px) {
  html[lang="de"] h1,
  html[lang="ru"] h1,
  html[lang="fr"] h1 { font-size: clamp(36px, 10vw, 48px); }
  html[lang="de"] .contact h2,
  html[lang="ru"] .contact h2,
  html[lang="fr"] .contact h2,
  html[lang="de"] .about-copy h2,
  html[lang="ru"] .about-copy h2,
  html[lang="fr"] .about-copy h2 { font-size: clamp(31px, 8.5vw, 40px); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
  .scroll-progress, .product-visual > img { transition: none; }
  .product-visual > img { transform: none; }
  img[data-skeleton] { animation: none; }
}