/* ==========================================================================
   VIBRAFEED — design system
   Light industrial B2B. Steel blue + graphite ink + amber accent.
   ========================================================================== */

:root {
  --ink:        #0b1620;
  --ink-2:      #22333f;
  --body:       #4c5c69;
  --muted:      #7b8b97;
  --brand:      #0d4a6b;
  --brand-deep: #072a3e;
  --brand-soft: #1a6f9c;
  --brand-tint: #eef4f8;
  --accent:     #df8a2b;
  --accent-ink: #a5611a;
  --line:       #dde5eb;
  --line-soft:  #eaf0f4;
  --bg:         #f6f9fb;
  --white:      #ffffff;
  --ok:         #1f8a5b;

  --radius:   14px;
  --radius-s: 9px;
  --shadow-s: 0 1px 2px rgba(11, 22, 32, .06), 0 2px 8px rgba(11, 22, 32, .04);
  --shadow-m: 0 2px 4px rgba(11, 22, 32, .05), 0 12px 28px -8px rgba(11, 22, 32, .12);
  --shadow-l: 0 4px 10px rgba(11, 22, 32, .06), 0 28px 60px -20px rgba(11, 22, 32, .22);

  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
          "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --nav-h: 68px;
  --wrap: 1200px;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--body);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4, h5 { color: var(--ink); margin: 0; line-height: 1.18; letter-spacing: -.019em; font-weight: 620; }
h1 { font-size: clamp(34px, 4.6vw, 57px); letter-spacing: -.028em; line-height: 1.06; }
h2 { font-size: clamp(26px, 3.2vw, 39px); letter-spacing: -.024em; }
h3 { font-size: 19.5px; letter-spacing: -.012em; }
p  { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }
a  { color: var(--brand); text-decoration: none; }
img, svg { max-width: 100%; display: block; }
ul, ol { margin: 0; padding: 0; }
li { list-style: none; }
button { font: inherit; cursor: pointer; }
::selection { background: #cfe2ee; color: var(--ink); }
:focus-visible { outline: 2.5px solid var(--brand-soft); outline-offset: 3px; border-radius: 4px; }

/* ---------- layout ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 26px; }
.section { padding: 96px 0; }
.section--tight { padding: 68px 0; }
.section--tint { background: var(--bg); }
.section--ink { background: var(--brand-deep); color: #b9cbd7; }
.section--ink h2, .section--ink h3 { color: #fff; }

.grid { display: grid; gap: 22px; }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-4 { grid-template-columns: repeat(4, 1fr); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--mono);
  font-size: 11.5px; font-weight: 500; letter-spacing: .15em; text-transform: uppercase;
  color: var(--brand-soft); margin-bottom: 16px;
}
.eyebrow::before { content: ""; width: 22px; height: 1.5px; background: currentColor; opacity: .55; }
.section--ink .eyebrow { color: #7fc0e0; }

.sec-head { max-width: 720px; margin-bottom: 48px; }
.sec-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head--center .eyebrow { justify-content: center; }
.sec-head p { margin-top: 18px; font-size: 17.5px; color: var(--body); max-width: 60ch; }
.section--ink .sec-head p { color: #9fb6c6; }
.lede { font-size: 18.5px; line-height: 1.62; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 13px 25px; border-radius: 8px; border: 1.5px solid transparent;
  font-size: 15px; font-weight: 590; letter-spacing: -.006em; line-height: 1;
  transition: transform .18s ease, box-shadow .22s ease, background .2s ease, color .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn svg { width: 15px; height: 15px; flex: none; }
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 6px 16px -6px rgba(13, 74, 107, .6); }
.btn-primary:hover { background: #0a3c57; transform: translateY(-1px); box-shadow: 0 10px 22px -8px rgba(13, 74, 107, .65); }
.btn-accent { background: var(--accent); color: #2b1a05; box-shadow: 0 6px 16px -6px rgba(223, 138, 43, .65); }
.btn-accent:hover { background: #d07c1e; transform: translateY(-1px); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-ghost:hover { border-color: #b9c9d4; background: #fbfdfe; transform: translateY(-1px); }
.btn-ghost-light { border-color: rgba(255,255,255,.28); color: #fff; background: rgba(255,255,255,.04); }
.btn-ghost-light:hover { background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.45); }
.btn-sm { padding: 10px 17px; font-size: 14px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 13px; align-items: center; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 7px; font-weight: 590; font-size: 14.5px;
  color: var(--brand);
}
.link-arrow svg { width: 14px; height: 14px; transition: transform .2s ease; }
.link-arrow:hover svg { transform: translateX(4px); }

/* ---------- header ---------- */
.topbar {
  background: var(--brand-deep); color: #a9c1d1; font-size: 12.8px;
  font-family: var(--mono); letter-spacing: .02em;
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 18px; height: 38px; }
.topbar-list { display: flex; align-items: center; gap: 22px; }
.topbar-list a { color: #cfe0ea; }
.topbar-list a:hover { color: #fff; }
.topbar-list span { display: inline-flex; align-items: center; gap: 7px; }
.topbar svg { width: 13px; height: 13px; opacity: .75; }

.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255,255,255,.9);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line-soft);
  transition: box-shadow .25s ease, border-color .25s ease;
}
.site-header.is-scrolled { box-shadow: 0 4px 20px -8px rgba(11,22,32,.14); border-color: var(--line); }
.nav { display: flex; align-items: center; gap: 34px; height: var(--nav-h); }
.logo { display: flex; align-items: center; gap: 11px; font-weight: 700; color: var(--ink); letter-spacing: .015em; font-size: 20.5px; flex: none; }
.logo-mark { height: 44px; width: auto; flex: none; }
.logo-cn { line-height: 1.15; }
.logo small { display: block; font-family: var(--mono); font-size: 8.6px; font-weight: 500; letter-spacing: .16em; color: var(--muted); text-transform: uppercase; margin-top: 3px; }
.nav-links { display: flex; align-items: center; gap: 24px; margin-left: auto; white-space: nowrap; }
.nav-links a {
  font-size: 14.8px; font-weight: 520; color: var(--ink-2); padding: 6px 0; position: relative;
  transition: color .18s ease;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 2px;
  background: var(--brand); transition: right .24s ease;
}
.nav-links a:hover { color: var(--brand); }
.nav-links a:hover::after, .nav-links a[aria-current="page"]::after { right: 0; }
.nav-links a[aria-current="page"] { color: var(--brand); }
.nav-cta { display: flex; align-items: center; gap: 11px; flex: none; }
.nav-toggle { display: none; }

/* ---------- language switch ---------- */
.lang-switch { display: inline-flex; align-items: center; gap: 1px; margin-right: 2px; font-size: 13.3px; font-weight: 600; letter-spacing: .02em; flex: none; white-space: nowrap; }
.lang-switch a { color: var(--muted); text-decoration: none; padding: 5px 7px; border-radius: 7px; line-height: 1; transition: color .18s ease, background .18s ease; }
.lang-switch a:hover { color: var(--brand); }
.lang-switch a.on { color: var(--brand); background: rgba(13, 74, 107, .085); }
.lang-switch i { color: #c3d2dc; font-style: normal; font-size: 11px; }

/* ---------- Chinese pages ---------- */
html[lang="zh-CN"] body { font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", Inter, system-ui, sans-serif; }
html[lang="zh-CN"] h1, html[lang="zh-CN"] h2, html[lang="zh-CN"] h3, html[lang="zh-CN"] h4 { letter-spacing: .01em; }
html[lang="zh-CN"] h1 { line-height: 1.26; }
html[lang="zh-CN"] .hero-sub, html[lang="zh-CN"] .lede, html[lang="zh-CN"] p { line-height: 1.85; }
html[lang="zh-CN"] .eyebrow { letter-spacing: .16em; }
html[lang="zh-CN"] .btn { letter-spacing: .02em; }

/* ---------- hero ---------- */
.hero { position: relative; overflow: hidden; background: #fff; padding: 74px 0 84px; }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(13,74,107,.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(13,74,107,.055) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 68% 18%, #000 10%, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 68% 18%, #000 10%, transparent 72%);
}
.hero::after {
  content: ""; position: absolute; width: 780px; height: 620px; right: -180px; top: -230px;
  background: radial-gradient(circle at 50% 50%, rgba(26,111,156,.10), transparent 66%);
  pointer-events: none;
}
.hero-grid {
  position: relative; display: grid; grid-template-columns: 1.02fr .98fr;
  gap: 58px; align-items: center;
}
.hero h1 .u {
  background: linear-gradient(180deg, transparent 62%, rgba(223,138,43,.30) 62%);
  padding: 0 2px;
}
.hero-sub { font-size: 18.5px; line-height: 1.62; color: var(--body); max-width: 54ch; margin: 24px 0 32px; }
.hero-note { display: flex; align-items: center; gap: 9px; margin-top: 24px; font-size: 13.4px; color: var(--muted); }
.hero-note svg { width: 15px; height: 15px; color: var(--ok); flex: none; }

.hero-visual { position: relative; }
.hero-figure {
  position: relative; background: linear-gradient(168deg, #fbfdfe 0%, #eef4f8 62%, #e6eef4 100%);
  border: 1px solid var(--line); border-radius: 20px; padding: 22px 20px 16px;
  box-shadow: var(--shadow-l);
}
.hero-figure svg { width: 100%; height: auto; }
.fig-caption {
  display: flex; justify-content: space-between; gap: 14px; align-items: center;
  border-top: 1px solid rgba(13,74,107,.10); margin-top: 10px; padding-top: 12px;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted);
}
.chip-float {
  position: absolute; display: flex; align-items: center; gap: 8px; z-index: 2;
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  padding: 9px 13px; box-shadow: var(--shadow-m);
  font-size: 12.6px; font-weight: 560; color: var(--ink-2); white-space: nowrap;
}
.chip-float b { font-family: var(--mono); font-weight: 600; color: var(--brand); font-size: 12.2px; }
.chip-float--a { top: 22px; left: -26px; }
.chip-float--b { bottom: 58px; right: -22px; }
.chip-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); flex: none; }
.chip-dot--ok { background: var(--ok); }

/* ---------- stat strip ---------- */
.stats { border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); background: #fff; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 26px 24px; border-left: 1px solid var(--line-soft); }
.stat:first-child { border-left: 0; padding-left: 0; }
.stat b { display: block; font-size: 31px; font-weight: 660; color: var(--ink); letter-spacing: -.035em; line-height: 1.1; }
.stat b i { font-style: normal; color: var(--brand-soft); font-size: .62em; font-weight: 600; }
.stat span { display: block; margin-top: 5px; font-size: 13.2px; color: var(--muted); letter-spacing: -.005em; }

/* ---------- cards ---------- */
.card {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 26px; transition: transform .22s ease, box-shadow .26s ease, border-color .22s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-m); border-color: #c8d7e1; }
.card h3 { margin-bottom: 9px; }
.card p { font-size: 14.8px; line-height: 1.63; color: var(--body); }
.card-icon {
  width: 42px; height: 42px; border-radius: 10px; display: grid; place-items: center;
  background: var(--brand-tint); color: var(--brand); margin-bottom: 18px;
  border: 1px solid rgba(13,74,107,.08);
}
.card-icon svg { width: 22px; height: 22px; }

.product-card { display: flex; flex-direction: column; padding: 0; overflow: hidden; }
.product-visual {
  height: 158px; background: linear-gradient(160deg, #f4f9fc, #e7f0f6);
  border-bottom: 1px solid var(--line-soft); display: grid; place-items: center; padding: 16px;
  position: relative; overflow: hidden;
}
.product-visual::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(13,74,107,.10) 1px, transparent 1px);
  background-size: 15px 15px; opacity: .55;
  mask-image: linear-gradient(to bottom, #000, transparent 88%);
  -webkit-mask-image: linear-gradient(to bottom, #000, transparent 88%);
}
.product-visual svg { width: 100%; max-width: 176px; height: auto; position: relative; z-index: 1; }
.product-visual img {
  width: 100%; height: 100%; max-height: 178px; object-fit: contain;
  position: relative; z-index: 1; background: #fff; border-radius: 8px; padding: 4px;
}
.product-photo-strip { display: grid; grid-template-columns: 108px 1fr; gap: 14px; align-items: center; margin-bottom: 16px; }
.product-photo-strip img { width: 108px; height: 82px; object-fit: cover; border-radius: 8px; border: 1px solid var(--line-soft); background: #fff; }
.product-body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.product-body p { margin-bottom: 16px; }
.tags { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 18px; }
.tag {
  font-family: var(--mono); font-size: 10.8px; letter-spacing: .05em; text-transform: uppercase;
  color: var(--brand); background: var(--brand-tint); border: 1px solid rgba(13,74,107,.10);
  padding: 4px 8px; border-radius: 5px; white-space: nowrap;
}
.product-body .link-arrow { margin-top: auto; }
.tag-strip { display: flex; flex-wrap: wrap; gap: 9px 26px; align-items: center; justify-content: center; }
.tag-strip span {
  font-family: var(--mono); font-size: 11.6px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted);
  display: inline-flex; align-items: center; gap: 8px;
}
.tag-strip span::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--line); }
.tag-strip span:first-child::before { display: none; }

/* ---------- feature list ---------- */
.feature { display: flex; gap: 16px; }
.feature-icon {
  flex: none; width: 38px; height: 38px; border-radius: 9px; display: grid; place-items: center;
  background: #fff; border: 1px solid var(--line); color: var(--brand); box-shadow: var(--shadow-s);
}
.feature-icon svg { width: 19px; height: 19px; }
.feature h3 { font-size: 16.5px; margin-bottom: 6px; }
.feature p { font-size: 14.4px; line-height: 1.6; }

/* ---------- split section ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 62px; align-items: center; }
.split--rev .split-media { order: 2; }
.split-media {
  background: linear-gradient(165deg, #f7fbfd, #e8f1f7); border: 1px solid var(--line);
  border-radius: 18px; padding: 26px; box-shadow: var(--shadow-m);
}
.check-list { display: grid; gap: 13px; margin: 26px 0 30px; }
.check-list li { display: flex; gap: 11px; font-size: 15.2px; line-height: 1.55; color: var(--ink-2); }
.check-list svg { width: 18px; height: 18px; flex: none; color: var(--ok); margin-top: 3px; }
.check-list b { font-weight: 620; color: var(--ink); }

/* ---------- applications ---------- */
.app-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.app {
  background: #fff; padding: 24px 22px; transition: background .2s ease;
}
.app:hover { background: #fafcfe; }
.app h3 { font-size: 15.2px; margin-bottom: 6px; }
.app p { font-size: 13.6px; color: var(--muted); line-height: 1.55; }
.app-num { font-family: var(--mono); font-size: 10.5px; color: #b3c2cc; letter-spacing: .1em; display: block; margin-bottom: 14px; }

/* ---------- process ---------- */
.process { display: grid; grid-template-columns: repeat(6, 1fr); gap: 0; counter-reset: step; }
.step { position: relative; padding: 0 16px 0 0; }
.step::before {
  content: ""; position: absolute; top: 15px; left: 34px; right: 0; height: 1.5px;
  background: linear-gradient(90deg, rgba(13,74,107,.34), rgba(13,74,107,.10));
}
.step:last-child::before { display: none; }
.step-n {
  position: relative; width: 31px; height: 31px; border-radius: 50%; display: grid; place-items: center;
  background: #fff; border: 1.5px solid var(--brand-soft); color: var(--brand);
  font-family: var(--mono); font-size: 12px; font-weight: 600; margin-bottom: 16px;
  box-shadow: 0 0 0 5px #fff;
}
.step h3 { font-size: 14.8px; margin-bottom: 6px; letter-spacing: -.008em; }
.step p { font-size: 13.2px; color: var(--muted); line-height: 1.5; }
.section--ink .step-n { background: var(--brand-deep); box-shadow: 0 0 0 5px var(--brand-deep); border-color: #4a9dc4; color: #cfe9f6; }
.section--ink .step::before { background: linear-gradient(90deg, rgba(127,192,224,.45), rgba(127,192,224,.10)); }
.section--ink .step p { color: #93aebe; }

/* ---------- table ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; -webkit-overflow-scrolling: touch; }
table.spec { width: 100%; border-collapse: collapse; min-width: 720px; font-size: 14.4px; }
table.spec th, table.spec td { padding: 15px 18px; text-align: left; border-bottom: 1px solid var(--line-soft); }
table.spec thead th {
  background: #f8fbfd; font-family: var(--mono); font-size: 10.8px; font-weight: 600;
  letter-spacing: .1em; text-transform: uppercase; color: var(--muted); border-bottom: 1px solid var(--line);
  padding-top: 13px; padding-bottom: 13px; white-space: nowrap;
}
table.spec tbody tr:hover { background: #fbfdfe; }
table.spec tbody tr:last-child td { border-bottom: 0; }
table.spec td:first-child { font-weight: 620; color: var(--ink); font-family: var(--mono); font-size: 13.4px; letter-spacing: .01em; }
table.spec .num { font-family: var(--mono); font-size: 13.2px; color: var(--ink-2); }
.table-note { font-size: 12.8px; color: var(--muted); margin-top: 14px; }

/* ---------- quotes ---------- */
.quote {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 26px;
  display: flex; flex-direction: column; box-shadow: var(--shadow-s);
}
.quote-mark { font-family: Georgia, serif; font-size: 42px; line-height: .6; color: #c9dce8; margin-bottom: 16px; }
.quote p { font-size: 15.2px; line-height: 1.64; color: var(--ink-2); margin-bottom: 22px; }
.quote-who { display: flex; align-items: center; gap: 12px; margin-top: auto; padding-top: 18px; border-top: 1px solid var(--line-soft); }
.avatar {
  width: 36px; height: 36px; border-radius: 50%; flex: none; display: grid; place-items: center;
  background: var(--brand-tint); color: var(--brand); font-weight: 650; font-size: 13px;
  border: 1px solid rgba(13,74,107,.10);
}
.quote-who b { display: block; font-size: 13.8px; color: var(--ink); font-weight: 620; }
.quote-who span { display: block; font-size: 12.4px; color: var(--muted); }

/* ---------- faq ---------- */
.faq { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%; display: flex; align-items: flex-start; justify-content: space-between; gap: 24px;
  background: none; border: 0; text-align: left; padding: 22px 4px 22px 0;
  font-size: 16.4px; font-weight: 570; color: var(--ink); letter-spacing: -.012em; line-height: 1.4;
}
.faq-q:hover { color: var(--brand); }
.faq-q i {
  flex: none; width: 22px; height: 22px; border-radius: 50%; border: 1px solid var(--line);
  display: grid; place-items: center; margin-top: 1px; transition: background .2s ease, border-color .2s ease, transform .25s ease;
}
.faq-q i::before, .faq-q i::after {
  content: ""; position: absolute; background: var(--ink-2); border-radius: 1px;
}
.faq-q i { position: relative; }
.faq-q i::before { width: 9px; height: 1.5px; }
.faq-q i::after { width: 1.5px; height: 9px; transition: opacity .2s ease; }
.faq-item.open .faq-q i { background: var(--brand); border-color: var(--brand); transform: rotate(90deg); }
.faq-item.open .faq-q i::before, .faq-item.open .faq-q i::after { background: #fff; }
.faq-item.open .faq-q i::after { opacity: 0; }
.faq-a { overflow: hidden; height: 0; transition: height .3s cubic-bezier(.4,0,.2,1); }
.faq-a > div { padding: 0 60px 24px 0; font-size: 15.2px; line-height: 1.66; color: var(--body); }
.faq-a p + p { margin-top: .7em; }

/* ---------- CTA band ---------- */
.cta-band { position: relative; overflow: hidden; background: var(--brand-deep); color: #c3d6e2; padding: 78px 0; }
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 82% 22%, rgba(26,111,156,.42), transparent 52%),
    repeating-linear-gradient(135deg, rgba(255,255,255,.028) 0 1px, transparent 1px 15px);
}
.cta-inner { position: relative; display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: center; }
.cta-inner h2 { color: #fff; margin-bottom: 14px; }
.cta-inner p { color: #a8c2d2; font-size: 16.6px; max-width: 52ch; }
.cta-actions { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }
.cta-actions .btn { width: 100%; }
.cta-actions small { font-family: var(--mono); font-size: 11px; letter-spacing: .07em; color: #7d9aad; text-transform: uppercase; }

/* ---------- form ---------- */
.form-card {
  background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 38px 36px;
  box-shadow: var(--shadow-m);
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 12.9px; font-weight: 600; color: var(--ink-2); letter-spacing: -.004em; }
.field label span { color: #b4442f; }
.field input, .field select, .field textarea {
  width: 100%; padding: 11px 13px; border: 1px solid var(--line); border-radius: 8px;
  font-family: inherit; font-size: 14.6px; color: var(--ink); background: #fcfdfe;
  transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
}
.field textarea { resize: vertical; min-height: 96px; line-height: 1.55; }
.field input::placeholder, .field textarea::placeholder { color: #a7b4be; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--brand-soft); background: #fff;
  box-shadow: 0 0 0 3.5px rgba(26,111,156,.13);
}
.field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237b8b97' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 13px center; padding-right: 34px; }
.form-foot { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-top: 22px; flex-wrap: wrap; }
.form-foot small { font-size: 12.4px; color: var(--muted); max-width: 42ch; line-height: 1.55; }
.form-status { margin-top: 16px; padding: 13px 15px; border-radius: 8px; font-size: 14px; display: none; }
.form-status.show { display: block; }
.form-status.ok { background: #eefaf3; border: 1px solid #bfe6d3; color: #14683f; }
.form-status.err { background: #fdf1ee; border: 1px solid #f3d1c8; color: #a33f27; }

.contact-side { display: grid; gap: 16px; align-content: start; }
.contact-item { display: flex; gap: 14px; padding: 18px 20px; background: #fff; border: 1px solid var(--line); border-radius: 12px; }
.contact-item .card-icon { margin: 0; width: 38px; height: 38px; flex: none; }
.contact-item .card-icon svg { width: 18px; height: 18px; }
.contact-item b { display: block; font-size: 11.4px; font-family: var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); font-weight: 500; margin-bottom: 3px; }
.contact-item a, .contact-item p { font-size: 15px; color: var(--ink); font-weight: 540; line-height: 1.45; }
.contact-item a:hover { color: var(--brand-soft); }

/* ---------- page hero (inner pages) ---------- */
.page-hero { position: relative; overflow: hidden; background: linear-gradient(180deg, #f4f9fc 0%, #fff 100%); border-bottom: 1px solid var(--line-soft); padding: 60px 0 64px; }
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(to right, rgba(13,74,107,.05) 1px, transparent 1px), linear-gradient(to bottom, rgba(13,74,107,.05) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(ellipse 80% 80% at 80% 0%, #000, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 80% 0%, #000, transparent 70%);
}
.page-hero .wrap { position: relative; }
.crumbs { display: flex; align-items: center; gap: 8px; font-size: 12.6px; color: var(--muted); margin-bottom: 22px; font-family: var(--mono); letter-spacing: .04em; }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--brand); }
.crumbs i { opacity: .5; }
.page-hero h1 { font-size: clamp(29px, 3.7vw, 44px); max-width: 20ch; }
.page-hero p { margin-top: 18px; font-size: 17.4px; max-width: 62ch; }
.page-hero .btn-row { margin-top: 28px; }

/* ---------- product detail rows ---------- */
.prow { display: grid; grid-template-columns: 1fr 1.15fr; gap: 52px; align-items: center; padding: 56px 0; border-bottom: 1px solid var(--line-soft); }
.prow:last-child { border-bottom: 0; }
.prow--rev .prow-visual { order: 2; }
.prow-visual {
  background: linear-gradient(160deg, #f6fafd, #e8f1f7); border: 1px solid var(--line);
  border-radius: 16px; padding: 26px; display: grid; place-items: center; min-height: 268px;
}
.prow-visual svg { width: 100%; max-width: 300px; height: auto; }
.prow-visual img { width: 100%; height: auto; max-height: 400px; object-fit: contain; border-radius: 10px; background: #fff; }
.prow h2 { font-size: clamp(22px, 2.4vw, 28px); margin-bottom: 12px; }
.prow > div > p { font-size: 15.4px; }
.mini-specs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line-soft); border: 1px solid var(--line-soft); border-radius: 10px; overflow: hidden; margin: 22px 0; }
.mini-specs div { background: #fff; padding: 12px 15px; }
.mini-specs b { display: block; font-family: var(--mono); font-size: 9.8px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); font-weight: 500; margin-bottom: 3px; }
.mini-specs span { font-size: 13.8px; color: var(--ink); font-weight: 540; }

/* ---------- footer ---------- */
.site-footer { background: #061e2c; color: #8ea9ba; padding: 62px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr .8fr .8fr 1.1fr; gap: 44px; padding-bottom: 46px; }
.site-footer .logo { color: #fff; }
.site-footer .logo-mark { height: 38px; }
.site-footer .logo small { color: #63808f; }
.site-footer h4 { color: #fff; font-size: 11.8px; font-family: var(--mono); letter-spacing: .13em; text-transform: uppercase; font-weight: 500; margin-bottom: 17px; }
.site-footer p { color: #8ea9ba; font-size: 13.6px; line-height: 1.65; }
.site-footer a { color: #a9c2d2; }
.site-footer a:hover { color: #fff; }
.footer-links { display: grid; gap: 10px; }
.footer-links a { font-size: 13.6px; }
.footer-contact { display: grid; gap: 11px; font-size: 13.6px; }
.footer-contact div { display: flex; gap: 9px; }
.footer-contact svg { width: 14px; height: 14px; flex: none; margin-top: 4px; opacity: .65; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.09); padding: 20px 0 24px;
  display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap;
  font-size: 12.4px; color: #6d8998; font-family: var(--mono); letter-spacing: .03em;
}
.footer-bottom a { color: #6d8998; }

/* ---------- floating actions ---------- */
.fab {
  position: fixed; right: 20px; bottom: 22px; z-index: 70; display: flex; flex-direction: column; gap: 10px;
}
.fab a {
  width: 50px; height: 50px; border-radius: 50%; display: grid; place-items: center;
  box-shadow: 0 8px 22px -6px rgba(11,22,32,.35); transition: transform .2s ease;
}
.fab a:hover { transform: translateY(-2px) scale(1.04); }
.fab svg { width: 24px; height: 24px; }
.fab .wa { background: #25d366; color: #fff; }
.fab .mail { background: var(--brand); color: #fff; }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s cubic-bezier(.22,.68,.24,1), transform .6s cubic-bezier(.22,.68,.24,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  * { animation: none !important; transition-duration: .01ms !important; }
}

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { max-width: 520px; margin: 0 auto; width: 100%; }
  .chip-float--a { left: -8px; }
  .chip-float--b { right: -8px; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .split--rev .split-media { order: 0; }
  .app-grid { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(3, 1fr); gap: 34px 0; }
  .step:nth-child(3)::before, .step:nth-child(6)::before { display: none; }
  .cta-inner { grid-template-columns: 1fr; gap: 32px; }
  .cta-actions { max-width: 380px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .prow { grid-template-columns: 1fr; gap: 30px; padding: 44px 0; }
  .prow--rev .prow-visual { order: 0; }
  .g-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .topbar-list li:not(:first-child) { display: none; }
  .nav-links {
    position: fixed; inset: calc(var(--nav-h) + 0px) 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 10px 26px 22px; margin: 0;
    box-shadow: 0 20px 30px -20px rgba(11,22,32,.25);
    transform: translateY(-110%); transition: transform .3s cubic-bezier(.4,0,.2,1);
    max-height: calc(100vh - var(--nav-h)); overflow: auto;
  }
  .nav-links.open { transform: none; }
  .nav-links a { padding: 13px 0; border-bottom: 1px solid var(--line-soft); font-size: 16px; }
  .nav-links a::after { display: none; }
  .nav-toggle {
    display: grid; place-items: center; margin-left: auto; width: 42px; height: 42px;
    border: 1px solid var(--line); border-radius: 8px; background: #fff; gap: 5px;
  }
  .nav-toggle i { display: block; width: 17px; height: 1.8px; background: var(--ink); border-radius: 2px; transition: transform .25s ease, opacity .2s ease; }
  .nav-toggle.open i:nth-child(1) { transform: translateY(6.8px) rotate(45deg); }
  .nav-toggle.open i:nth-child(2) { opacity: 0; }
  .nav-toggle.open i:nth-child(3) { transform: translateY(-6.8px) rotate(-45deg); }
  .nav-cta .btn:not(.btn-accent) { display: none; }
  .section { padding: 72px 0; }
  .g-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
  body { font-size: 16px; }
  .wrap { padding: 0 20px; }
  .hero { padding: 46px 0 56px; }
  .hero-sub { font-size: 17px; }
  .hero-note { font-size: 12.6px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat { padding: 20px 16px; }
  .stat:first-child { padding-left: 16px; }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--line-soft); }
  .stat b { font-size: 25px; }
  .stat span { font-size: 12.2px; }
  .g-2, .g-3, .g-4 { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr 1fr; gap: 28px 0; }
  .step::before { display: none !important; }
  .form-card { padding: 26px 20px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-foot { flex-direction: column; align-items: stretch; }
  .form-foot .btn { width: 100%; }
  .faq-a > div { padding-right: 26px; }
  .faq-q { font-size: 15.4px; padding-right: 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .section { padding: 58px 0; }
  .sec-head { margin-bottom: 34px; }
  .page-hero { padding: 40px 0 44px; }
  .chip-float { font-size: 11.6px; padding: 7px 11px; }
  .chip-float--a { top: 10px; left: -6px; }
  .chip-float--b { bottom: 40px; right: -6px; }
  .mini-specs { grid-template-columns: 1fr; }
  .fab { right: 14px; bottom: 14px; }
  .fab a { width: 46px; height: 46px; }
  .nav-cta .btn-accent { padding: 10px 15px; font-size: 13.4px; }
  .logo { font-size: 18px; }
}

@media print {
  .site-header, .topbar, .fab, .cta-band, .site-footer { display: none; }
}