:root {
  --bg: #0a121c;
  --bg-2: #101c2c;
  --surface: #152437;
  --text: #eef3f9;
  --muted: #9eb0c5;
  --accent: #1f8fd8;
  --accent-2: #0d6aa8;
  --alert: #d93a3a;
  --line: rgba(255, 255, 255, 0.09);
  --radius: 16px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
  --font: "Noto Sans SC", "Barlow", system-ui, sans-serif;
  --display: "Barlow", "Noto Sans SC", sans-serif;
  --container: 96%;
  --header-h: 72px;
  --safe-b: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 8% -8%, rgba(31, 143, 216, 0.16), transparent 58%),
    radial-gradient(900px 500px at 92% 0%, rgba(217, 58, 58, 0.1), transparent 52%),
    linear-gradient(180deg, #0a121c, #0d1726 42%, #0a121c);
  min-height: 100vh;
  padding-bottom: calc(64px + var(--safe-b));
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; height: auto; }
button, input, textarea, select { font: inherit; }
:focus-visible {
  outline: 2px solid rgba(31, 143, 216, 0.85);
  outline-offset: 2px;
}

.container {
  width: var(--container);
  max-width: 1680px;
  margin-inline: auto;
}
.narrow { width: min(920px, var(--container)); margin-inline: auto; }
.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--accent); color: #fff;
  padding: .6rem 1rem; z-index: 100;
}
.skip-link:focus { left: 1rem; top: 1rem; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(10, 18, 28, 0.88);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; gap: 1rem;
  min-height: var(--header-h);
}
.brand { display: flex; align-items: center; gap: .75rem; flex-shrink: 0; }
.brand-logo-wrap {
  display: grid; place-items: center;
  height: 42px; padding: .35rem .55rem;
  border-radius: 10px; background: #fff;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}
.brand-logo {
  height: 28px; width: auto; max-width: 132px;
  object-fit: contain; object-position: left center;
}
.brand-mark {
  width: 42px; height: 42px; border-radius: 11px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  font-family: "Noto Sans SC", var(--display); font-weight: 900; font-size: 1.15rem;
  letter-spacing: 0; color: #fff;
  box-shadow: 0 8px 24px rgba(31, 143, 216, 0.28);
}
.media-video { position: relative; }
.media-badge-concept {
  position: absolute; top: .65rem; left: .65rem; z-index: 2;
  padding: .28rem .55rem; border-radius: 999px;
  background: rgba(10, 18, 28, 0.78); color: #d7e6f5;
  font-size: .72rem; letter-spacing: .04em;
  border: 1px solid rgba(255,255,255,.14);
}
.brand-text strong { display: block; font-size: 1.05rem; }
.brand-text small { color: var(--muted); font-size: .75rem; }
.nav {
  display: flex; gap: .35rem 1.05rem; flex: 1; justify-content: center; flex-wrap: wrap;
}
.nav a {
  color: var(--muted); font-size: .94rem; padding: .35rem 0;
  border-bottom: 2px solid transparent;
}
.nav a.active, .nav a:hover { color: var(--text); border-bottom-color: var(--accent); }
.header-actions { display: flex; align-items: center; gap: .55rem; flex-shrink: 0; }
.lang {
  border: 1px solid var(--line); border-radius: 999px;
  padding: .35rem .75rem; color: var(--muted); font-size: .85rem;
}
.nav-toggle {
  display: none; background: rgba(255,255,255,.04); border: 1px solid var(--line);
  color: var(--text); font-size: 1.25rem; width: 42px; height: 42px; border-radius: 10px;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  border-radius: 999px; padding: .78rem 1.3rem; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; transition: transform .2s ease, filter .2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-sm { padding: .45rem .95rem; font-size: .9rem; }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { border-color: rgba(255,255,255,.22); color: var(--text); background: rgba(255,255,255,.03); }

.hero {
  position: relative; min-height: min(86vh, 860px);
  display: grid; align-items: end; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    linear-gradient(105deg, rgba(10,18,28,.78) 0%, rgba(10,18,28,.55) 42%, rgba(10,18,28,.82) 100%),
    linear-gradient(180deg, rgba(10,18,28,.2), rgba(10,18,28,.92) 88%),
    var(--hero-img) center/cover no-repeat;
  transform: scale(1.02);
  animation: heroDrift 18s ease-in-out infinite alternate;
}
@keyframes heroDrift {
  from { transform: scale(1.02) translate3d(0,0,0); }
  to { transform: scale(1.06) translate3d(-1.2%, -0.8%, 0); }
}
.hero-content { position: relative; padding: clamp(4rem, 10vw, 7rem) 0 3.5rem; }
.eyebrow {
  color: var(--accent); letter-spacing: .12em; text-transform: uppercase;
  font-size: .82rem; font-weight: 600;
}
.hero h1, .page-hero h1 {
  font-family: var(--display);
  font-size: clamp(2rem, 4.8vw, 3.75rem);
  line-height: 1.12; margin: .45rem 0 1rem; max-width: 14ch;
}
.lead { color: var(--muted); font-size: clamp(1rem, 1.5vw, 1.15rem); max-width: 46rem; line-height: 1.75; }
.hero-cta { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: 1.6rem; }
.hero-pills {
  display: flex; flex-wrap: wrap; gap: .55rem; margin-top: 1.4rem;
}
.pill {
  border: 1px solid rgba(31,143,216,.35);
  background: rgba(31,143,216,.1);
  color: #cfe8f8;
  border-radius: 999px;
  padding: .35rem .8rem;
  font-size: .82rem;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .9rem;
  margin-top: -2.2rem;
  position: relative;
  z-index: 2;
}
.metric {
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.2rem;
  box-shadow: var(--shadow);
}
.metric strong {
  display: block; font-family: var(--display);
  font-size: clamp(1.4rem, 2.4vw, 1.9rem); margin-bottom: .25rem;
}
.metric span { color: var(--muted); font-size: .9rem; line-height: 1.45; }

.section { padding: clamp(3rem, 6vw, 5rem) 0; }
.section-alt { background: rgba(255,255,255,.02); border-block: 1px solid var(--line); }
.section-head {
  display: flex; justify-content: space-between; align-items: end;
  gap: 1rem; margin-bottom: 1.75rem; flex-wrap: wrap;
}
.section-head a, .link { color: var(--accent); }
.section-kicker {
  color: var(--accent); font-size: .82rem; letter-spacing: .08em;
  text-transform: uppercase; margin: 0 0 .4rem; font-weight: 600;
}
.section h2 { font-size: clamp(1.45rem, 2.8vw, 2.15rem); margin: 0 0 .75rem; }
.section-desc { color: var(--muted); max-width: 48rem; margin: 0; line-height: 1.7; }
.prose { color: var(--muted); line-height: 1.85; font-size: 1.05rem; }

.flow-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .9rem;
  counter-reset: step;
}
.flow-step {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.2rem;
  background: rgba(255,255,255,.03);
  position: relative;
  min-height: 140px;
}
.flow-step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: block;
  font-family: var(--display);
  color: var(--accent);
  font-weight: 700;
  font-size: 1.15rem;
  margin-bottom: .55rem;
}
.flow-step h3 { margin: 0 0 .4rem; font-size: 1.05rem; }
.flow-step p { margin: 0; color: var(--muted); font-size: .92rem; line-height: 1.55; }

.arch-panel {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 1.5rem; align-items: center;
}
.arch-media {
  border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line);
  background: #f4f7fb; box-shadow: var(--shadow);
}
.arch-media img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.arch-copy .check-list { margin: 1rem 0 0; padding: 0; list-style: none; display: grid; gap: .65rem; }
.arch-copy .check-list li {
  display: grid; grid-template-columns: 1.1rem 1fr; gap: .65rem;
  color: var(--muted); line-height: 1.55;
}
.arch-copy .check-list li::before {
  content: ""; width: .7rem; height: .7rem; margin-top: .35rem;
  border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgba(31,143,216,.18);
}

.product-strip {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1rem;
}
.product-strip-lg { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.product-item {
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.015));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
  display: flex; flex-direction: column; height: 100%;
}
.product-item:hover {
  transform: translateY(-5px);
  border-color: rgba(31,143,216,.45);
  box-shadow: var(--shadow);
}
.product-item img {
  width: 100%; aspect-ratio: 1; object-fit: contain;
  background: linear-gradient(180deg, #f8fbff, #eef3f8);
  border-radius: 12px; margin-bottom: .9rem;
}
.product-item h3 { margin: 0 0 .4rem; font-size: 1.05rem; }
.product-item p { margin: 0 0 .8rem; color: var(--muted); font-size: .9rem; line-height: 1.5; flex: 1; }
.product-item .link { font-size: .9rem; font-weight: 600; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .9rem;
}
.feature-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.2rem;
  background: rgba(255,255,255,.03);
  min-height: 132px;
}
.feature-card .num {
  display: block; margin-bottom: .55rem;
}
.feature-card h3 { margin: 0 0 .35rem; font-size: 1rem; }
.feature-card p { margin: 0; color: var(--muted); font-size: .9rem; line-height: 1.55; }

.adv-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .35rem; }
.adv-list li, .cloud-list article {
  display: grid; grid-template-columns: auto 1fr; gap: 1rem;
  padding: 1.15rem 0; border-bottom: 1px solid var(--line);
}
.num {
  font-family: var(--display); font-weight: 700; color: var(--accent);
  font-size: 1.35rem; min-width: 2.2rem;
}
.adv-list h3, .cloud-list h3 { margin: 0 0 .35rem; }
.adv-list p, .cloud-list p { margin: 0; color: var(--muted); line-height: 1.6; }

.adv-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .9rem;
}
.adv-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem 1.25rem;
  background: rgba(255,255,255,.03);
}
.adv-card .num { display: block; margin-bottom: .45rem; }
.adv-card h3 { margin: 0 0 .4rem; font-size: 1.05rem; }
.adv-card p { margin: 0; color: var(--muted); line-height: 1.6; }

.scene-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: .85rem;
}
.scene-item {
  border: 1px solid var(--line); border-radius: 14px; padding: 1.05rem 1.1rem;
  background: rgba(255,255,255,.025);
  transition: border-color .2s ease, transform .2s ease;
}
.scene-item:hover { border-color: rgba(31,143,216,.4); transform: translateY(-2px); }
.scene-item .code { color: var(--alert); font-size: .8rem; font-weight: 700; }
.scene-item h3 { margin: .35rem 0; font-size: 1rem; }
.scene-item p { margin: 0; color: var(--muted); font-size: .9rem; line-height: 1.5; }
.scene-group { margin-bottom: 2.5rem; }

.page-hero {
  padding: clamp(2.4rem, 5vw, 3.6rem) 0 1.2rem;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(31,143,216,.08), transparent 55%);
}
.page-hero .lead { margin-bottom: 0; }
.breadcrumb {
  display: flex; flex-wrap: wrap; gap: .4rem; align-items: center;
  color: var(--muted); font-size: .88rem; margin-bottom: .7rem;
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { opacity: .5; }

.detail-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}
.detail-toc {
  position: sticky; top: calc(var(--header-h) + 1rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  background: rgba(255,255,255,.03);
}
.detail-toc h3 {
  margin: 0 0 .7rem; font-size: .82rem; letter-spacing: .08em;
  text-transform: uppercase; color: var(--muted); font-weight: 600;
}
.detail-toc a {
  display: block; color: var(--muted); font-size: .9rem;
  padding: .4rem 0; border-bottom: 1px solid transparent;
}
.detail-toc a:hover, .detail-toc a.active { color: var(--text); }
.detail-main { min-width: 0; }

.detail-grid {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(1.2rem, 3vw, 2.2rem); align-items: center;
}
.detail-media, .detail-block-media {
  border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line);
  background: linear-gradient(180deg, #f8fbff, #eef3f8);
  box-shadow: var(--shadow);
}
.detail-media img,
.detail-block-media img {
  width: 100%; aspect-ratio: 4 / 3; object-fit: contain; background: transparent;
}
.detail-copy .pill-row { display: flex; flex-wrap: wrap; gap: .45rem; margin: 1rem 0 1.2rem; }
.detail-block {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(1.2rem, 3vw, 2.2rem); align-items: center;
}
.detail-block-reverse { direction: rtl; }
.detail-block-reverse > * { direction: ltr; }
.detail-block-copy h2 { margin: 0 0 .75rem; font-size: clamp(1.35rem, 2.4vw, 1.85rem); }

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem 1.2rem;
  margin: 0; padding: 0; list-style: none;
}
.feature-list li {
  color: var(--muted); line-height: 1.55;
  padding: .85rem 1rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255,255,255,.025);
  position: relative;
  padding-left: 2.2rem;
}
.feature-list li::before {
  content: "";
  position: absolute; left: .9rem; top: 1.15rem;
  width: .55rem; height: .55rem; border-radius: 50%;
  background: var(--accent);
}

.chain-flow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: .7rem;
  margin-top: 1rem;
}
.chain-node {
  border: 1px solid rgba(217,58,58,.35);
  background: rgba(217,58,58,.08);
  border-radius: 12px;
  padding: .9rem 1rem;
  text-align: center;
  font-weight: 600;
  font-size: .92rem;
  line-height: 1.4;
}
.chain {
  font-size: 1.08rem; line-height: 1.75; color: var(--text);
  border-left: 3px solid var(--alert); padding-left: 1rem; margin: 0;
}

.spec-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.02);
}
.spec-table { width: 100%; border-collapse: collapse; min-width: 520px; }
.spec-table th, .spec-table td {
  text-align: left; padding: .9rem 1rem; border-bottom: 1px solid var(--line);
}
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }
.spec-table th { width: 32%; color: var(--muted); font-weight: 500; background: rgba(255,255,255,.02); }
.spec-table td { color: var(--text); }

.gallery {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: .85rem;
}
.gallery-lg { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.gallery img, .gallery-item img {
  width: 100%; border-radius: 0; background: linear-gradient(180deg, #f8fbff, #eef3f8);
  aspect-ratio: 4 / 3; object-fit: contain;
}
.gallery-item {
  display: block; border: 1px solid var(--line); border-radius: 14px; overflow: hidden;
  transition: transform .2s ease, border-color .2s ease;
}
.gallery-item:hover { transform: translateY(-3px); border-color: rgba(31,143,216,.45); }

.cta-band {
  background:
    linear-gradient(100deg, rgba(31,143,216,.18), rgba(217,58,58,.12)),
    rgba(255,255,255,.02);
}
.cta-inner {
  display: flex; justify-content: space-between; align-items: center;
  gap: 1rem; flex-wrap: wrap;
}
.cta-inner h2 { margin: 0; max-width: 22ch; font-size: clamp(1.35rem, 2.5vw, 1.9rem); }

.contact-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 1.5rem; }
.contact-form, .contact-aside {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 1.35rem;
  background: rgba(255,255,255,.03);
}
.contact-form label { display: grid; gap: .35rem; margin-bottom: .9rem; color: var(--muted); font-size: .92rem; }
.contact-form input, .contact-form textarea {
  width: 100%; border-radius: 10px; border: 1px solid var(--line);
  background: rgba(0,0,0,.25); color: var(--text); padding: .75rem .85rem;
}
.form-msg { margin-top: .8rem; min-height: 1.2em; }
.form-msg.ok { color: #5dcc8a; }
.form-msg.err { color: #ff7b7b; }
.about-meta { margin: 1.5rem 0; color: var(--muted); line-height: 1.8; }

.site-footer { border-top: 1px solid var(--line); padding: 2.6rem 0 1.5rem; margin-top: 1rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 1.5rem; }
.footer-grid h3, .footer-grid h4 { margin: 0 0 .65rem; }
.footer-grid p, .footer-grid a { color: var(--muted); margin: .28rem 0; line-height: 1.6; display: block; }
.footer-grid a:hover { color: var(--accent); }
.footer-bottom {
  margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--line);
  color: var(--muted); font-size: .85rem;
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
}

.mobile-cta {
  display: none;
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
  padding: .65rem 4% calc(.65rem + var(--safe-b));
  background: rgba(10, 18, 28, 0.94);
  border-top: 1px solid var(--line);
  backdrop-filter: blur(12px);
  gap: .55rem;
}
.mobile-cta .btn { flex: 1; }

.lightbox {
  position: fixed; inset: 0; z-index: 80; display: none;
  align-items: center; justify-content: center;
  background: rgba(0,0,0,.86); padding: 1.2rem;
}
.lightbox.open { display: flex; }
.lightbox img {
  max-width: min(96vw, 1200px); max-height: 88vh;
  object-fit: contain; border-radius: 12px; background: #fff;
}
.lightbox-close {
  position: absolute; top: 1rem; right: 1rem;
  background: rgba(255,255,255,.12); color: #fff; border: 0;
  width: 42px; height: 42px; border-radius: 999px; cursor: pointer; font-size: 1.2rem;
}

.arch-media { position: relative; }
.media-badge {
  position: absolute; left: .8rem; top: .8rem;
  background: rgba(217,58,58,.88); color: #fff;
  font-size: .75rem; font-weight: 700; border-radius: 999px;
  padding: .3rem .65rem; letter-spacing: .04em;
}
.video-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.video-grid-dense { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.video-group { margin-bottom: 2rem; }
.video-group h3 { margin: 0 0 .85rem; font-size: 1.15rem; }
.media-video {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(0,0,0,.25);
}
.media-video video,
.media-slot img {
  width: 100%; aspect-ratio: 16 / 9; object-fit: cover; display: block; background: #0b1522;
}
.media-video figcaption,
.media-pending-cap {
  padding: .7rem .9rem; color: var(--muted); font-size: .88rem;
  border-top: 1px solid var(--line);
}
.media-slot {
  position: relative; aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, rgba(31,143,216,.12), rgba(217,58,58,.08)),
    #122033;
}
.media-slot img { position: absolute; inset: 0; opacity: .35; }
.media-slot-overlay {
  position: absolute; inset: 0;
  display: grid; place-content: center; justify-items: center; gap: .4rem;
  padding: 1rem; text-align: center;
}
.media-slot-icon {
  width: 54px; height: 54px; border-radius: 999px;
  display: grid; place-items: center;
  background: rgba(31,143,216,.2); border: 1px solid rgba(31,143,216,.45);
  color: #cfe8f8; font-size: 1.1rem; margin-bottom: .3rem;
}
.media-slot-overlay strong { color: var(--text); font-size: 1rem; }
.media-slot-overlay small { color: var(--muted); font-size: .82rem; }
.media-slot-overlay code {
  margin-top: .35rem; font-size: .72rem; color: #8eb4d4;
  background: rgba(0,0,0,.28); padding: .25rem .5rem; border-radius: 6px;
  max-width: 100%; overflow: hidden; text-overflow: ellipsis;
}
.media-video.is-pending { border-style: dashed; }
.media-image.is-pending img { opacity: .95; }

.scene-media-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.scene-media-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(255,255,255,.025);
  display: grid;
  grid-template-rows: auto auto;
}
.scene-media-copy { padding: 1rem 1.1rem 0.4rem; }
.scene-media-copy .code { color: var(--alert); font-size: .8rem; font-weight: 700; }
.scene-media-copy h3 { margin: .35rem 0; font-size: 1.05rem; }
.scene-media-copy p { margin: 0 0 .6rem; color: var(--muted); font-size: .9rem; line-height: 1.5; }
.scene-media-card .media-video {
  border: 0; border-top: 1px solid var(--line); border-radius: 0;
}

@media (max-width: 1200px) {
  .product-strip { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flow-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .detail-layout { grid-template-columns: 1fr; }
  .detail-toc {
    position: static;
    display: flex; gap: .55rem; overflow-x: auto; padding: .75rem;
    -webkit-overflow-scrolling: touch;
  }
  .detail-toc h3 { display: none; }
  .detail-toc a {
    white-space: nowrap; border: 1px solid var(--line); border-radius: 999px;
    padding: .4rem .8rem; font-size: .85rem;
  }
}

@media (max-width: 960px) {
  .nav {
    display: none; position: absolute; inset: var(--header-h) 0 auto;
    background: rgba(12, 20, 32, 0.98); padding: 1rem 4%;
    border-bottom: 1px solid var(--line); flex-direction: column; gap: 0;
  }
  .nav a { padding: .85rem 0; border-bottom: 1px solid var(--line); }
  .nav.open { display: flex; }
  .nav-toggle { display: inline-grid; place-items: center; }
  .header-actions .btn-sm { display: none; }
  .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 1.2rem; }
  .product-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .arch-panel, .detail-grid, .detail-block, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
  .detail-block-reverse { direction: ltr; }
  .feature-list, .adv-grid { grid-template-columns: 1fr; }
  .video-grid, .scene-media-grid { grid-template-columns: 1fr; }
  .mobile-cta { display: flex; }
}

@media (max-width: 640px) {
  .product-strip { grid-template-columns: 1fr; }
  .metrics, .flow-steps, .feature-grid { grid-template-columns: 1fr; }
  .hero { min-height: 78vh; }
  .hero h1 { max-width: 12ch; }
  .section { padding: 2.6rem 0; }
  .brand-text small { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-bg { animation: none; }
  .btn, .product-item, .scene-item, .gallery-item { transition: none; }
}