/* 官网样式：面向初创科技公司的克制展示型官网，重点突出产品、应用与咨询转化。 */
:root {
  --brand: #050505;
  --accent: #00b853;
  --accent-hover: #009a47;
  --ink: #151515;
  --ink-soft: #666;
  --muted: #8b8f97;
  --line: #e7e8ea;
  --bg: #fff;
  --bg-soft: #f6f7f8;
  --bg-panel: #f2f3f4;
  --radius: 8px;
  --shadow: 0 18px 50px rgba(0, 0, 0, .12);
}

* { box-sizing: border-box; }
html { min-height: 100%; scroll-behavior: smooth; }
body {
  min-height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  color: var(--ink);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
.site-main { flex: 1 0 auto; }

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--brand);
  color: #fff;
  box-shadow: 0 1px 0 rgba(255, 255, 255, .08);
}
.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -3px;
  z-index: 5;
  height: 5px;
  background: var(--brand);
  pointer-events: none;
}
.site-header .navbar {
  position: relative;
  z-index: 6;
  min-height: 64px;
  padding: 0;
  background: var(--brand);
}
.site-header .navbar-brand {
  color: #fff;
  font-size: 1.22rem;
  font-weight: 800;
  padding: 1rem 0;
  letter-spacing: .02em;
}
.site-header .navbar-brand img { max-height: 30px; }
.site-header .navbar-toggler { filter: invert(1); }
.main-nav { gap: .35rem; }
.site-header .nav-link {
  position: relative;
  border: 0;
  color: #fff;
  background: transparent;
  font-weight: 650;
  padding: 1.3rem .95rem !important;
  line-height: 1;
  cursor: pointer;
}
.site-header .nav-menu-toggle { padding-right: 1.75rem !important; }
.site-header .nav-link::after {
  content: "";
  position: absolute;
  left: .95rem;
  right: .95rem;
  bottom: .78rem;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .2s ease;
}
.site-header .nav-link:hover,
.site-header .nav-link:focus { color: #fff; }
.site-header .nav-link:hover::after,
.site-header .nav-link[aria-expanded="true"]::after { transform: scaleX(1); }
.nav-menu-toggle::before {
  content: "";
  position: absolute;
  top: 50%;
  right: .85rem;
  width: .44rem;
  height: .44rem;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-58%) rotate(45deg);
  opacity: .75;
}
.nav-menu-toggle[aria-expanded="true"]::before { transform: translateY(-18%) rotate(225deg); }
.nav-cta {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: .5rem 1.05rem;
  border-radius: var(--radius);
  color: #fff !important;
  background: var(--accent);
  font-weight: 700;
  transition: background .2s, transform .2s;
}
.nav-cta:hover { background: var(--accent-hover); transform: translateY(-1px); }
.lang-switch .btn {
  min-width: 38px;
  border-radius: var(--radius);
  font-weight: 700;
}
.lang-switch .btn-outline-secondary { color: #e6e6e6; border-color: #555; }

/* hover 菜单：参考成熟 3D 打印机官网的全宽轻面板，但内容规模适合初创公司。 */
.mega-layer {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(100% + 3px);
  z-index: 1;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-24px);
  overflow: hidden;
  background: rgba(247, 248, 249, .98);
  color: var(--ink);
  border-top: 0;
  border-bottom: 1px solid var(--line);
  box-shadow: 0 26px 64px rgba(0, 0, 0, .18);
  transition: none;
  will-change: opacity, transform;
}
.mega-layer.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
  transition: opacity .38s ease, transform .42s cubic-bezier(.16, .84, .24, 1), visibility 0s;
}
.mega-inner {
  padding: 2rem 1rem 2.4rem;
  transform: translateY(-8px);
  transition: none;
}
.mega-layer.is-open .mega-inner {
  transform: translateY(0);
  transition: transform .44s cubic-bezier(.16, .84, .24, 1);
}
.mega-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.2rem;
  padding-bottom: .9rem;
  border-bottom: 1px solid var(--line);
}
.mega-head span { color: var(--ink-soft); font-weight: 700; }
.mega-head a { color: var(--accent); font-weight: 700; }
.mega-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.2rem 2rem;
}
.mega-grid-compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.mega-card {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 1rem;
  align-items: center;
  min-height: 112px;
  padding: .7rem;
  border-radius: var(--radius);
  transition: background .2s, transform .2s;
}
.mega-card:hover { background: #fff; transform: translateY(-2px); }
.mega-thumb {
  width: 92px;
  height: 92px;
  display: block;
  background: #fff center / contain no-repeat;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.mega-card strong {
  display: block;
  margin-bottom: .35rem;
  font-size: 1.02rem;
}
.mega-card small {
  display: -webkit-box;
  color: var(--ink-soft);
  line-height: 1.55;
  overflow: hidden;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

/* ===== Hero ===== */
.hero { position: relative; background: #e9eaec; }
.hero .carousel-item,
.hero-slide { min-height: 640px; }
.hero-slide {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
}
.hero-img {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, #f3f4f5 0%, #dfe1e3 100%);
  background-size: cover;
  background-position: center;
}
.hero-img-fallback {
  background-size: cover;
  background-position: center;
}
.hero-img-fallback-one {
  background-image:
    radial-gradient(circle at 76% 52%, rgba(0, 184, 83, .18) 0 9%, transparent 10%),
    linear-gradient(90deg, transparent 0 55%, rgba(0, 0, 0, .12) 55% 56%, transparent 56%),
    linear-gradient(160deg, #f8f9fa 0%, #eef0f2 48%, #d8dde1 100%);
}
.hero-img-fallback-two {
  background-image:
    radial-gradient(circle at 78% 34%, rgba(0, 184, 83, .2) 0 10%, transparent 11%),
    linear-gradient(135deg, transparent 0 58%, rgba(21, 21, 21, .14) 58% 59%, transparent 59%),
    linear-gradient(160deg, #f4f5f6 0%, #e7eaed 46%, #d2d8dc 100%);
}
.hero-slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(245, 246, 247, .96) 0%, rgba(245, 246, 247, .82) 36%, rgba(245, 246, 247, .18) 72%, rgba(245, 246, 247, 0) 100%);
}
.hero-text {
  position: relative;
  z-index: 2;
  width: min(620px, 90vw);
  padding: 5rem clamp(1.25rem, 7vw, 5.6rem);
}
.hero-tag {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--accent);
  font-size: .88rem;
  font-weight: 800;
}
.hero h1 {
  margin: 0 0 .9rem;
  font-size: clamp(2.5rem, 5vw, 4.4rem);
  line-height: 1.05;
  font-weight: 850;
  letter-spacing: 0;
}
.hero h2 {
  margin: 0 0 2.1rem;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
  line-height: 1.7;
  font-weight: 400;
}
.hero-cta-group { display: flex; gap: .8rem; flex-wrap: wrap; }
.btn-primary-dark,
.btn-outline-dark,
.btn-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: .72rem 1.45rem;
  border-radius: var(--radius);
  font-weight: 750;
  transition: background .2s, border-color .2s, color .2s, transform .2s;
}
.btn-primary-dark {
  background: var(--ink);
  color: #fff;
  border: 1px solid var(--ink);
}
.btn-primary-dark:hover { background: #000; color: #fff; transform: translateY(-1px); }
.btn-outline-dark {
  background: transparent;
  color: var(--ink);
  border: 1px solid rgba(0, 0, 0, .55);
}
.btn-outline-dark:hover { background: var(--ink); color: #fff; }
.btn-accent {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; }
.carousel-indicators { margin-bottom: 1.5rem; }
.carousel-indicators [data-bs-target] {
  width: 36px;
  height: 4px;
  border: 0;
  border-radius: 999px;
  background: rgba(0, 0, 0, .24);
}
.carousel-indicators .active { background: var(--ink); }

/* ===== 通用区块 ===== */
.section { padding: 5rem 0; }
.section-tight { padding: 3.5rem 0; }
.section-bg-soft { background: var(--bg-soft); }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
  margin-bottom: 2.2rem;
}
.section-title {
  margin: 0;
  font-size: clamp(1.65rem, 3vw, 2.45rem);
  line-height: 1.2;
  font-weight: 850;
  letter-spacing: 0;
}
.section-subtitle {
  max-width: 760px;
  margin: .7rem 0 0;
  color: var(--ink-soft);
  line-height: 1.8;
}
.link-arrow {
  color: var(--accent);
  font-weight: 750;
  white-space: nowrap;
}
.link-arrow:hover { color: var(--accent-hover); }
.editable-prose {
  color: var(--ink-soft);
  line-height: 1.85;
}
.editable-prose p:last-child { margin-bottom: 0; }

/* ===== 首页 ===== */
.signal-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.signal-item {
  padding: 1.6rem 1.8rem;
  border-right: 1px solid var(--line);
}
.signal-item:last-child { border-right: 0; }
.signal-item strong {
  display: block;
  margin-bottom: .35rem;
  font-size: 1.05rem;
}
.signal-item span { color: var(--ink-soft); line-height: 1.7; }
.feature-band {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, .95fr);
  gap: 3rem;
  align-items: center;
}
.feature-media {
  min-height: 360px;
  background: var(--bg-panel) center / cover no-repeat;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.process-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.process-step {
  min-height: 180px;
  padding: 1.5rem;
  background: #fff;
}
.process-step span {
  display: block;
  margin-bottom: 1.4rem;
  color: var(--accent);
  font-weight: 850;
}
.process-step strong {
  display: block;
  margin-bottom: .55rem;
  font-size: 1.05rem;
}
.process-step p { margin: 0; color: var(--ink-soft); line-height: 1.7; }

/* ===== 卡片 ===== */
.product-card,
.tile-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .22s, box-shadow .22s, border-color .22s;
}
.product-card:hover,
.tile-card:hover {
  border-color: #d7d9dc;
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}
.product-card .pc-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--bg-soft) center / contain no-repeat;
}
.product-card .pc-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 1.35rem;
}
.product-card .pc-name {
  margin-bottom: .45rem;
  font-size: 1.25rem;
  font-weight: 800;
}
.product-card .pc-intro {
  flex: 1;
  margin-bottom: 1.15rem;
  color: var(--ink-soft);
  line-height: 1.7;
}
.product-card .pc-link { color: var(--accent); font-weight: 750; }
.tile-card .tc-cover {
  aspect-ratio: 4 / 3;
  background: var(--bg-soft) center / cover no-repeat;
}
.tile-card .tc-body { padding: 1.15rem 1.2rem 1.3rem; }
.tile-card .tc-title {
  margin-bottom: .35rem;
  font-size: 1.05rem;
  font-weight: 800;
}
.tile-card .tc-sub {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.65;
}

/* ===== 详情页 ===== */
.product-subnav {
  position: sticky;
  top: 64px;
  z-index: 900;
  background: rgba(18, 18, 18, .96);
  color: #fff;
  border-top: 1px solid #202020;
}
.product-subnav-inner {
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
}
.product-subnav-name {
  font-size: 1.1rem;
  font-weight: 850;
}
.product-subnav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  color: rgba(255, 255, 255, .62);
  font-weight: 750;
}
.product-subnav-links a:hover { color: #fff; }
.product-subnav-cta {
  padding: .45rem .9rem;
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff !important;
}
.product-hero {
  position: relative;
  min-height: 680px;
  overflow: hidden;
  background: #eef0f2;
}
.product-hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, #f6f7f8 0%, #e6e8ea 58%, #d9dee2 100%);
  background-size: cover;
  background-position: center;
}
.product-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(246, 247, 248, .96) 0%, rgba(246, 247, 248, .72) 34%, rgba(246, 247, 248, .08) 70%);
}
.product-hero-inner {
  position: relative;
  z-index: 2;
  min-height: 680px;
  display: flex;
  align-items: center;
}
.product-hero-copy {
  width: min(620px, 92vw);
  padding: 4rem 0;
}
.product-hero h1 {
  margin: .3rem 0 .9rem;
  font-size: clamp(3rem, 7vw, 5.4rem);
  line-height: 1.02;
  font-weight: 850;
  letter-spacing: 0;
}
.product-hero p {
  max-width: 560px;
  margin: 0 0 2rem;
  color: var(--ink-soft);
  font-size: 1.25rem;
  line-height: 1.8;
}
.breadcrumb-mini {
  margin-bottom: 1.5rem;
  color: var(--ink-soft);
  font-size: .92rem;
}
.detail-cover {
  aspect-ratio: 4 / 3;
  background: var(--bg-soft) center / contain no-repeat;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.thumb-row { display: flex; gap: .6rem; margin-top: .8rem; flex-wrap: wrap; }
.thumb-row img {
  width: 76px;
  height: 58px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
}
.thumb-row img:hover { border-color: var(--accent); }
.spec-table { width: 100%; }
.spec-table th,
.spec-table td {
  padding: .85rem 0;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.spec-table th {
  width: 36%;
  color: var(--ink-soft);
  font-weight: 650;
  text-align: left;
}
.prose {
  color: #2a2a2a;
  line-height: 1.85;
}
.prose img,
.prose video,
.prose iframe {
  max-width: 100%;
  border-radius: var(--radius);
}
.product-gallery {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 190px;
  gap: 1.2rem;
  align-items: start;
}
.product-gallery-main {
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
}
.product-gallery-cover {
  aspect-ratio: 16 / 9;
  border: 0;
  border-radius: 0;
  background-color: #fff;
}
.product-gallery-thumbs {
  display: grid;
  gap: .75rem;
}
.product-gallery-thumbs button {
  width: 100%;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  cursor: pointer;
}
.product-gallery-thumbs button:hover { border-color: var(--accent); }
.product-gallery-thumbs img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}
.product-video-frame {
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #050505;
  box-shadow: var(--shadow);
}
.product-video-frame video,
.product-video-frame iframe {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
}
.product-detail-prose {
  max-width: 980px;
  margin: 0 auto;
  padding: 2.2rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.product-spec-panel {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}
.product-spec-table th,
.product-spec-table td {
  padding: 1.05rem 1.4rem;
}
.product-spec-table tr:last-child th,
.product-spec-table tr:last-child td { border-bottom: 0; }

/* ===== 软件与联系 ===== */
.software-card {
  height: 100%;
  padding: 1.7rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}
.software-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}
.software-row:last-child { border-bottom: 0; }
.form-control {
  border-radius: var(--radius);
  border-color: #dfe1e4;
}
.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 .2rem rgba(0, 184, 83, .15);
}
details summary { cursor: pointer; }

/* ===== 页脚 ===== */
.site-footer {
  flex-shrink: 0;
  padding: 3.8rem 0 2rem;
  background: var(--brand);
  color: #a9abb0;
}
.site-footer h5 {
  margin-bottom: 1rem;
  color: #fff;
  font-size: 1rem;
  font-weight: 800;
}
.site-footer a { color: #a9abb0; transition: color .2s; }
.site-footer a:hover { color: var(--accent); }
.footer-note { margin: .7rem 0; color: #c2c4c8; line-height: 1.75; }
.footer-contact-link {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--accent);
  font-weight: 750;
}
.footer-bottom {
  margin-top: 2.3rem;
  padding-top: 1.4rem;
  border-top: 1px solid #222;
  color: #888;
  font-size: .86rem;
}

/* ===== 联系方式抽屉 ===== */
.contact-fab {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 1100;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 26px rgba(0, 184, 83, .34);
  cursor: pointer;
  transition: transform .2s;
}
.contact-fab:hover { transform: translateY(-2px); }
.contact-scrim {
  position: fixed;
  inset: 0;
  z-index: 1150;
  pointer-events: none;
  background: rgba(0, 0, 0, .28);
  opacity: 0;
  transition: opacity .22s;
}
.contact-scrim.is-open {
  pointer-events: auto;
  opacity: 1;
}
.contact-drawer {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 1160;
  width: min(420px, 92vw);
  height: 100vh;
  padding: 2rem;
  background: #fff;
  box-shadow: -18px 0 50px rgba(0, 0, 0, .18);
  transform: translateX(105%);
  transition: transform .26s ease;
}
.drawer-open .contact-drawer { transform: translateX(0); }
.drawer-open { overflow: hidden; }
.drawer-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #fff;
  font-size: 1.45rem;
  line-height: 1;
}
.drawer-kicker {
  margin: 2.8rem 0 .55rem;
  color: var(--accent);
  font-weight: 850;
}
.contact-drawer h3 {
  margin-bottom: 1.5rem;
  font-size: 1.65rem;
  font-weight: 850;
}
.drawer-list {
  display: grid;
  gap: .75rem;
  margin-bottom: 1.5rem;
}
.drawer-list a,
.drawer-list div {
  display: block;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-soft);
}
.drawer-list span {
  display: block;
  margin-bottom: .25rem;
  color: var(--muted);
  font-size: .88rem;
}
.drawer-list strong {
  display: block;
  color: var(--ink);
  line-height: 1.55;
}
.drawer-cta {
  display: flex;
  justify-content: center;
  min-height: 46px;
  align-items: center;
  border-radius: var(--radius);
  background: var(--ink);
  color: #fff;
  font-weight: 800;
}
.drawer-cta:hover { color: #fff; background: #000; }

/* ===== 响应式 ===== */
@media (max-width: 991.98px) {
  .site-header { position: sticky; }
  .site-header .navbar-collapse {
    padding: .7rem 0 1rem;
    border-top: 1px solid #222;
  }
  .site-header .nav-link { padding: .85rem 0 !important; }
  .site-header .nav-menu-toggle { padding-right: 1.35rem !important; }
  .site-header .nav-link::after { left: 0; right: auto; width: 44px; bottom: .55rem; }
  .nav-menu-toggle::before { right: .15rem; }
  .mega-layer {
    position: static;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
    display: none;
    box-shadow: none;
    border-top: 1px solid #ddd;
    transition: none;
  }
  .mega-layer.is-open { display: block; }
  .mega-inner {
    transform: none;
    transition: none;
  }
  .mega-grid,
  .mega-grid-compact,
  .feature-band,
  .process-list,
  .signal-grid,
  .product-gallery { grid-template-columns: 1fr; }
  .product-subnav { top: 64px; }
  .product-subnav-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: .85rem 1rem;
  }
  .product-subnav-links {
    width: 100%;
    gap: 1.1rem;
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: .15rem;
  }
  .product-gallery-thumbs {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .signal-item { border-right: 0; border-bottom: 1px solid var(--line); }
  .signal-item:last-child { border-bottom: 0; }
}

@media (max-width: 767.98px) {
  .hero .carousel-item,
  .hero-slide { min-height: 520px; }
  .hero-slide::after {
    background: linear-gradient(180deg, rgba(245, 246, 247, .2) 0%, rgba(245, 246, 247, .98) 66%);
  }
  .hero-text {
    align-self: flex-end;
    padding: 3rem 1.25rem 4.3rem;
  }
  .section { padding: 3.2rem 0; }
  .section-head { align-items: flex-start; flex-direction: column; }
  .mega-card { grid-template-columns: 74px minmax(0, 1fr); }
  .mega-thumb { width: 74px; height: 74px; }
  .feature-media { min-height: 240px; }
  .product-subnav { position: static; }
  .product-hero,
  .product-hero-inner { min-height: 560px; }
  .product-hero::after {
    background: linear-gradient(180deg, rgba(246, 247, 248, .18) 0%, rgba(246, 247, 248, .98) 68%);
  }
  .product-hero-inner { align-items: flex-end; }
  .product-hero-copy { padding: 3rem 0; }
  .product-hero h1 { font-size: clamp(2.4rem, 15vw, 4rem); }
  .product-gallery-thumbs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .product-detail-prose { padding: 1.25rem; }
  .product-spec-table th,
  .product-spec-table td {
    display: block;
    width: 100%;
    padding: .85rem 1rem;
  }
  .product-spec-table th {
    padding-bottom: .25rem;
    border-bottom: 0;
  }
  .product-spec-table td { padding-top: 0; }
  .footer-bottom { flex-direction: column; gap: .6rem; }
  .software-row { align-items: flex-start; flex-direction: column; }
}