/* ============================================================
   Yihao Technology — style.css
   Style modeled on clean AI-infrastructure sites (nebius.com),
   with a light grass-green primary palette.
   ============================================================ */

:root {
  --green:        #7DC242;   /* light grass green — primary */
  --green-dark:   #5EA72C;   /* hover / emphasis */
  --green-deep:   #2F5D12;   /* text-on-tint accents */
  --green-tint:   #F2F8EA;   /* section background tint */
  --green-line:   #DDEACB;   /* tinted borders */

  --ink:          #12160E;   /* near-black, green-tinted */
  --body:         #3E463A;
  --muted:        #76806F;
  --line:         #E6EAE0;

  --bg:           #FFFFFF;
  --bg-dark:      #0E130B;

  --radius:       18px;
  --radius-sm:    12px;
  --shadow:       0 12px 32px rgba(18, 22, 14, .08);

  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
          "Helvetica Neue", Arial, sans-serif;

  --container: 1200px;
  --gutter: 24px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--body);
  background: var(--bg);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; }
a { color: var(--green-dark); text-decoration: none; }
a:hover { color: var(--green-deep); }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---------- Typography helpers ---------- */
.eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--green-dark);
  margin-bottom: 18px;
}
.eyebrow-light { color: var(--green); }

h1, h2, h3, h4 { color: var(--ink); line-height: 1.08; letter-spacing: -0.02em; }

.section-title {
  font-size: clamp(30px, 4.2vw, 52px);
  font-weight: 800;
  margin-bottom: 24px;
}

.section { padding: 110px 0; }
.section-tint { background: var(--green-tint); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-dark  { background: var(--ink); color: #fff; }
.btn-dark:hover { background: var(--green-deep); color: #fff; }

.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--green); color: var(--green-deep); background: var(--green-tint); }

.btn-sm { padding: 10px 20px; font-size: 14px; }
.btn-lg { padding: 17px 36px; font-size: 16px; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background .25s ease, box-shadow .25s ease, border-color .25s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(255, 255, 255, .88);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom-color: var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); }
.brand:hover { color: var(--ink); }
.brand-mark { border-radius: 8px; }
.brand-name { font-size: 18px; font-weight: 800; letter-spacing: -0.01em; }
.brand-thin { font-weight: 500; color: var(--muted); margin-left: 5px; }

.main-nav { display: flex; gap: 30px; }
.main-nav a {
  color: var(--body);
  font-size: 15px;
  font-weight: 500;
  position: relative;
  padding: 6px 0;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--green);
  border-radius: 2px;
  transition: width .2s ease;
}
.main-nav a:hover { color: var(--ink); }
.main-nav a:hover::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: 14px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 22px; height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  padding: 170px 0 90px;
  background:
    radial-gradient(60% 50% at 85% 0%, rgba(125, 194, 66, .14), transparent 70%),
    radial-gradient(40% 40% at 0% 100%, rgba(125, 194, 66, .08), transparent 70%),
    var(--bg);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 64px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(40px, 5.6vw, 72px);
  font-weight: 800;
  margin-bottom: 24px;
}

.lead {
  font-size: clamp(17px, 1.6vw, 20px);
  color: var(--body);
  max-width: 560px;
  margin-bottom: 36px;
}

.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-visual { position: relative; }
.hero-visual img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  position: absolute;
  left: -28px;
  bottom: 32px;
  background: rgba(255, 255, 255, .92);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--green-line);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-card-num {
  font-size: 30px;
  font-weight: 800;
  color: var(--green-dark);
  letter-spacing: -0.02em;
}
.hero-card-label { font-size: 13px; color: var(--muted); }

/* ---------- Stats ---------- */
.stats { border-block: 1px solid var(--line); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  padding: 44px var(--gutter);
}
.stat { display: flex; flex-direction: column; gap: 6px; }
.stat-num {
  font-size: clamp(26px, 2.6vw, 36px);
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.stat-label { font-size: 14px; color: var(--muted); }

/* ---------- Service cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 56px;
}
.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  background: var(--bg);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--green-line);
}
.card-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--green-tint);
  color: var(--green-dark);
  display: grid;
  place-items: center;
  margin-bottom: 20px;
}
.card-icon svg { width: 26px; height: 26px; }
.card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.card p { font-size: 14.5px; margin-bottom: 16px; }
.card ul {
  list-style: none;
  margin-top: auto;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}
.card li {
  font-size: 13.5px;
  color: var(--muted);
  padding: 3px 0 3px 18px;
  position: relative;
}
.card li::before {
  content: "";
  position: absolute;
  left: 0; top: 11px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--green);
}

/* ---------- Dark band (network) ---------- */
.band {
  position: relative;
  color: #fff;
  padding: 120px 0;
  overflow: hidden;
  background: var(--bg-dark);
}
.band-bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  opacity: .38;
}
.band::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10, 14, 7, .55), rgba(10, 14, 7, .85));
}
.band-inner { position: relative; z-index: 1; max-width: 760px; }
.band h2 {
  color: #fff;
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 800;
  margin-bottom: 20px;
}
.band-lead { font-size: clamp(16px, 1.5vw, 19px); color: rgba(255, 255, 255, .82); margin-bottom: 34px; }
.band-points { display: flex; flex-wrap: wrap; gap: 12px; }
.band-points span {
  border: 1px solid rgba(125, 194, 66, .55);
  color: #DDF0C6;
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 500;
  background: rgba(125, 194, 66, .12);
}

/* ---------- Split layouts ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.split-copy p { margin-bottom: 18px; }

.check-list { list-style: none; margin: 26px 0 34px; }
.check-list li {
  position: relative;
  padding: 8px 0 8px 34px;
  color: var(--body);
  font-size: 15px;
  border-bottom: 1px dashed var(--line);
}
.check-list li:last-child { border-bottom: 0; }
.check-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 12px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--green-tint) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235EA72C' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E") center / 12px no-repeat;
}

/* photo grid */
.photo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.photo { position: relative; border-radius: var(--radius-sm); overflow: hidden; }
.photo img {
  width: 100%; height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
  transition: transform .4s ease;
}
.photo:hover img { transform: scale(1.04); }
.photo-tall { grid-row: span 2; }
.photo-tall img { aspect-ratio: auto; }
.photo figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 28px 14px 12px;
  font-size: 12.5px;
  font-weight: 500;
  color: #fff;
  background: linear-gradient(transparent, rgba(10, 14, 7, .72));
}

/* about photos */
.about-photos { display: grid; gap: 16px; }

/* facts */
.facts {
  margin-top: 30px;
  border-top: 1px solid var(--green-line);
}
.facts > div {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--green-line);
}
.facts dt { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--green-deep); }
.facts dd { color: var(--ink); font-size: 15px; }

/* ---------- Contact ---------- */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: start;
}
.contact-copy p { margin-bottom: 26px; max-width: 480px; }
.contact-cards { display: grid; gap: 16px; }
.info-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 24px 26px;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.info-card:hover { border-color: var(--green-line); box-shadow: var(--shadow); }
.info-card h3 {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--green-dark);
  margin-bottom: 10px;
}
.info-card p { font-size: 15px; color: var(--ink); }
.info-card .muted { color: var(--muted); font-size: 13.5px; margin-top: 4px; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: #FBFCF8;
  padding: 72px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
}
.footer-brand p { margin-top: 18px; font-size: 14.5px; color: var(--muted); max-width: 300px; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col h4 {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--ink);
  margin-bottom: 6px;
}
.footer-col a { color: var(--body); font-size: 14.5px; }
.footer-col a:hover { color: var(--green-dark); }
.footer-addr { font-size: 13.5px; color: var(--muted); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 22px 0;
  font-size: 13.5px;
  color: var(--muted);
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .section { padding: 84px 0; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .split, .contact-wrap { grid-template-columns: 1fr; gap: 48px; }
  .split-reverse .split-copy { order: 2; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 8px var(--gutter) 16px;
    display: none;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .main-nav a:last-child { border-bottom: 0; }
  .main-nav a::after { display: none; }
  .nav-toggle { display: flex; }
  .header-actions .btn { display: none; }

  .hero { padding: 130px 0 64px; }
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-card { left: 12px; bottom: 12px; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .card-grid { grid-template-columns: 1fr; }
  .photo-grid { grid-template-columns: 1fr; }
  .photo-tall { grid-row: auto; }
  .photo-tall img { aspect-ratio: 4 / 3; }
  .facts > div { grid-template-columns: 1fr; gap: 2px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .photo:hover img { transform: none; }
}

/* ============================================================
   Multi-page components (site-wide rebuild)
   ============================================================ */

/* ---------- Dropdown navigation ---------- */
.nav-item { position: relative; display: flex; align-items: center; }
.nav-link {
  color: var(--body);
  font-size: 15px;
  font-weight: 500;
  padding: 6px 0;
  background: none;
  border: 0;
  cursor: pointer;
  font-family: inherit;
  position: relative;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--green);
  border-radius: 2px;
  transition: width .2s ease;
}
.nav-link:hover { color: var(--ink); }
.nav-link:hover::after,
.nav-item.active > .nav-link::after { width: 100%; }
.nav-item.active > .nav-link { color: var(--ink); }

.has-dropdown > .nav-link { padding-right: 14px; }
.has-dropdown > .nav-link::before {
  content: "";
  position: absolute;
  right: 0; top: 50%;
  width: 7px; height: 7px;
  border-right: 1.6px solid currentColor;
  border-bottom: 1.6px solid currentColor;
  transform: translateY(-70%) rotate(45deg);
}

.dropdown {
  position: absolute;
  top: calc(100% + 14px);
  left: -16px;
  min-width: 240px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  padding: 10px;
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
  z-index: 120;
}
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: none;
}
.dropdown a {
  padding: 9px 12px;
  border-radius: 8px;
  color: var(--body);
  font-size: 14.5px;
}
.dropdown a:hover { background: var(--green-tint); color: var(--green-deep); }

/* ---------- Subpage hero ---------- */
.subhero {
  padding: 160px 0 72px;
  background:
    radial-gradient(55% 60% at 90% 0%, rgba(125, 194, 66, .13), transparent 70%),
    var(--bg);
}
.subhero-tint { background: var(--green-tint); }
.subhero h1 {
  font-size: clamp(34px, 4.6vw, 60px);
  font-weight: 800;
  max-width: 820px;
  margin-bottom: 20px;
}
.subhero .lead { max-width: 680px; }
.breadcrumbs {
  display: flex;
  gap: 8px;
  font-size: 13.5px;
  color: var(--muted);
  margin-bottom: 22px;
}
.breadcrumbs a { color: var(--muted); }
.breadcrumbs a:hover { color: var(--green-dark); }
.breadcrumbs span::before { content: "/"; margin-right: 8px; color: var(--line); }

/* ---------- CTA band ---------- */
.cta-band {
  background:
    radial-gradient(50% 70% at 100% 0%, rgba(125, 194, 66, .16), transparent 70%),
    var(--bg-dark);
  color: #fff;
  padding: 96px 0;
  text-align: center;
}
.cta-inner h2 {
  color: #fff;
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 800;
  margin-bottom: 14px;
}
.cta-inner p { color: rgba(255,255,255,.75); max-width: 560px; margin: 0 auto 30px; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta-band .btn-dark { background: var(--green); color: var(--bg-dark); }
.cta-band .btn-dark:hover { background: #8fd457; color: var(--bg-dark); }
.cta-band .btn-ghost { color: #fff; border-color: rgba(255,255,255,.3); }
.cta-band .btn-ghost:hover { border-color: var(--green); background: rgba(125,194,66,.12); color: #fff; }

/* ---------- Tables (pricing / specs) ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-sm); }
table.spec-table { width: 100%; border-collapse: collapse; font-size: 14.5px; min-width: 640px; }
.spec-table th, .spec-table td { padding: 13px 18px; text-align: left; }
.spec-table thead th {
  background: var(--green-tint);
  color: var(--green-deep);
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: .07em;
  border-bottom: 1px solid var(--green-line);
}
.spec-table tbody tr { border-bottom: 1px solid var(--line); }
.spec-table tbody tr:last-child { border-bottom: 0; }
.spec-table tbody tr:hover { background: #FAFCF5; }
.spec-table td:first-child { font-weight: 600; color: var(--ink); }
.price-note { font-size: 13px; color: var(--muted); margin-top: 12px; }

/* ---------- FAQ accordion ---------- */
.faq { max-width: 820px; }
.faq details {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  background: #fff;
  overflow: hidden;
}
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 22px;
  font-weight: 600;
  color: var(--ink);
  font-size: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-size: 22px;
  font-weight: 400;
  color: var(--green-dark);
  flex-shrink: 0;
  transition: transform .2s ease;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 22px 18px; font-size: 15px; }

/* ---------- News / blog / events cards ---------- */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}
.news-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #fff;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.news-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--green-line); }
.news-card .news-tag {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--green-dark);
}
.news-card h3 { font-size: 18px; font-weight: 700; line-height: 1.35; }
.news-card p { font-size: 14.5px; color: var(--body); flex-grow: 1; }
.news-card .news-date { font-size: 13px; color: var(--muted); }
.news-card a.news-more { font-size: 14px; font-weight: 600; color: var(--green-dark); }

/* ---------- Badge / ecosystem strip ---------- */
.badge-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px 40px;
  padding: 36px 0;
}
.badge-strip span {
  font-size: 16px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: .02em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.badge-strip span::before {
  content: "";
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--green);
}

/* ---------- Quote / testimonial cards ---------- */
.quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 48px; }
.quote-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.quote-card blockquote {
  font-size: 16.5px;
  color: var(--ink);
  line-height: 1.55;
  flex-grow: 1;
}
.quote-card blockquote::before { content: "\201C"; color: var(--green); font-size: 1.4em; }
.quote-who { display: flex; flex-direction: column; gap: 2px; }
.quote-who strong { color: var(--ink); font-size: 14.5px; }
.quote-who span { font-size: 13px; color: var(--muted); }

/* ---------- Steps (process) ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 48px; counter-reset: step; }
.step {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  background: #fff;
  counter-increment: step;
}
.step::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  font-size: 30px;
  font-weight: 800;
  color: var(--green);
  margin-bottom: 14px;
}
.step h3 { font-size: 17px; margin-bottom: 8px; }
.step p { font-size: 14.5px; color: var(--body); }

/* ---------- Leadership / people grid ---------- */
.people-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 48px; }
.person {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  text-align: center;
  background: #fff;
}
.person .avatar {
  width: 84px; height: 84px;
  border-radius: 50%;
  margin: 0 auto 16px;
  background: var(--green-tint);
  color: var(--green-dark);
  display: grid;
  place-items: center;
  font-size: 26px;
  font-weight: 800;
}
.person h3 { font-size: 16px; margin-bottom: 4px; }
.person span { font-size: 13.5px; color: var(--muted); }

/* ---------- Feature rows (alternating) ---------- */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
  padding: 56px 0;
}
.feature-row + .feature-row { border-top: 1px solid var(--line); }
.feature-row.flip .feature-media { order: 2; }
.feature-row h3 { font-size: clamp(24px, 2.6vw, 34px); font-weight: 800; margin-bottom: 16px; }
.feature-row p { margin-bottom: 14px; }
.feature-media img { border-radius: var(--radius); box-shadow: var(--shadow); }

/* ---------- Pill list ---------- */
.pill-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.pill-list span {
  border: 1px solid var(--green-line);
  background: var(--green-tint);
  color: var(--green-deep);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 13.5px;
  font-weight: 500;
}

/* ---------- Info / department cards (contacts) ---------- */
.dept-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 48px; }

/* ---------- Prose pages (legal) ---------- */
.prose { max-width: 800px; }
.prose h2 { font-size: 24px; margin: 40px 0 14px; }
.prose h3 { font-size: 18px; margin: 28px 0 10px; }
.prose p, .prose li { font-size: 15px; margin-bottom: 12px; }
.prose ul { padding-left: 22px; margin-bottom: 14px; }
.prose .updated { font-size: 13.5px; color: var(--muted); margin-bottom: 30px; }

/* ---------- Section spacing helpers ---------- */
.section-sm { padding: 72px 0; }
.mt-48 { margin-top: 48px; }
.center { text-align: center; }
.max-720 { max-width: 720px; }

/* ---------- Footer: wider grid ---------- */
.footer-grid {
  grid-template-columns: 1.8fr repeat(8, 1fr);
  gap: 28px;
}
.footer-col a { font-size: 13.5px; }
.footer-col h4 { font-size: 12px; }

/* ---------- Responsive additions ---------- */
@media (max-width: 1200px) {
  .footer-grid { grid-template-columns: repeat(4, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 1024px) {
  .news-grid, .quote-grid, .steps, .dept-grid { grid-template-columns: repeat(2, 1fr); }
  .people-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-row, .feature-row.flip { grid-template-columns: 1fr; gap: 32px; }
  .feature-row.flip .feature-media { order: 0; }
}
@media (max-width: 768px) {
  .main-nav .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: 0;
    padding: 0 0 0 14px;
    min-width: 0;
  }
  .main-nav .has-dropdown > .nav-link::before { display: none; }
  .main-nav .nav-item { flex-direction: column; align-items: stretch; }
  .main-nav .nav-link { padding: 12px 0; border-bottom: 1px solid var(--line); text-align: left; }
  .main-nav .dropdown a { padding: 10px 0; font-size: 14px; border-bottom: 1px dashed var(--line); }
  .main-nav .dropdown a:last-child { border-bottom: 0; }
  .news-grid, .quote-grid, .steps, .dept-grid, .people-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .subhero { padding: 130px 0 56px; }
}

/* dropdown links: no underline animation */
.dropdown a::after { display: none; }

/* ============================================================
   v3 components: dark hero, forms, subscribe, code card, social
   ============================================================ */

/* ---------- Dark hero (home) ---------- */
.hero-dark {
  position: relative;
  padding: 190px 0 120px;
  background: var(--bg-dark);
  color: #fff;
  overflow: hidden;
}
.hero-dark .hero-bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  opacity: .34;
}
.hero-dark::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10,14,7,.45), rgba(10,14,7,.88) 78%);
}
.hero-dark .container { position: relative; z-index: 1; }
.hero-dark h1 {
  color: #fff;
  font-size: clamp(44px, 6.4vw, 84px);
  font-weight: 800;
  letter-spacing: -0.03em;
  max-width: 900px;
  margin-bottom: 22px;
}
.hero-dark .lead { color: rgba(255,255,255,.82); max-width: 640px; }
.hero-dark .eyebrow { color: var(--green); }
.hero-dark .btn-ghost { color: #fff; border-color: rgba(255,255,255,.35); }
.hero-dark .btn-ghost:hover { border-color: var(--green); background: rgba(125,194,66,.14); color: #fff; }
.hero-dark .btn-dark { background: var(--green); color: var(--bg-dark); }
.hero-dark .btn-dark:hover { background: #8fd457; color: var(--bg-dark); }

/* ---------- Metric strip (big numbers) ---------- */
.metric-strip { display: grid; grid-template-columns: repeat(4,1fr); gap: 40px; }
.metric { display: flex; flex-direction: column; gap: 8px; }
.metric-num {
  font-size: clamp(34px, 3.8vw, 52px);
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.03em;
}
.metric-num small { font-size: .45em; font-weight: 700; color: var(--green-dark); margin-left: 4px; }
.metric-label { font-size: 14px; color: var(--muted); max-width: 240px; }

/* ---------- Case cards with metrics ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; margin-top: 48px; }
.case-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.case-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--green-line); }
.case-card .case-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.case-card .case-tags span {
  font-size: 11.5px; font-weight: 600;
  border: 1px solid var(--green-line);
  background: var(--green-tint);
  color: var(--green-deep);
  border-radius: 999px;
  padding: 3px 10px;
}
.case-card h3 { font-size: 18px; line-height: 1.35; }
.case-card > p { font-size: 14px; color: var(--body); flex-grow: 1; }
.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}
.case-metrics div { display: flex; flex-direction: column; gap: 2px; }
.case-metrics strong { font-size: 17px; font-weight: 800; color: var(--green-dark); }
.case-metrics span { font-size: 11.5px; color: var(--muted); line-height: 1.3; }

/* ---------- GPU model cards ---------- */
.model-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; margin-top: 48px; }
.model-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.model-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--green-line); }
.model-card .model-class {
  font-size: 11.5px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .08em;
  color: var(--green-dark);
}
.model-card h3 { font-size: 19px; }
.model-card p { font-size: 14px; color: var(--body); flex-grow: 1; }
.model-card a { font-size: 14px; font-weight: 600; }

/* ---------- Code card ---------- */
.code-card {
  background: var(--bg-dark);
  border-radius: var(--radius);
  padding: 28px;
  overflow-x: auto;
  border: 1px solid #24301b;
}
.code-card pre {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 13.5px;
  line-height: 1.65;
  color: #D6E8BE;
  margin: 0;
}
.code-card .c-kw { color: #8fd457; }
.code-card .c-str { color: #E8C468; }
.code-card .c-cmt { color: #6B7A5E; }

/* ---------- Partner banner ---------- */
.partner-banner {
  border: 1px solid var(--green-line);
  background: linear-gradient(120deg, var(--green-tint), #fff 65%);
  border-radius: var(--radius);
  padding: 48px 56px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
}
.partner-banner h2 { font-size: clamp(24px, 2.8vw, 36px); margin-bottom: 12px; }
.partner-banner p { max-width: 620px; }
.partner-badge {
  font-size: 15px;
  font-weight: 800;
  color: var(--green-deep);
  border: 2px solid var(--green);
  border-radius: 14px;
  padding: 18px 26px;
  text-align: center;
  line-height: 1.4;
  white-space: nowrap;
}

/* ---------- Subscribe block ---------- */
.subscribe {
  border-top: 1px solid var(--line);
  background: #fff;
  padding: 64px 0;
}
.subscribe-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}
.subscribe-copy h2 { font-size: 26px; margin-bottom: 8px; }
.subscribe-copy p { color: var(--muted); font-size: 14.5px; }
.subscribe-row { display: flex; gap: 10px; }
.subscribe-row input {
  flex: 1;
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 15px;
  font-family: inherit;
}
.subscribe-row input:focus { outline: 2px solid var(--green); outline-offset: 1px; border-color: var(--green); }
.subscribe-opts { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 14px; font-size: 13.5px; color: var(--body); }
.subscribe-opts label { display: inline-flex; gap: 7px; align-items: center; cursor: pointer; }
.subscribe-consent { display: flex; gap: 8px; align-items: flex-start; margin-top: 14px; font-size: 12.5px; color: var(--muted); }
.subscribe-consent input { margin-top: 2px; }

/* ---------- Contact form ---------- */
.contact-form-section { padding: 100px 0; background: var(--green-tint); }
.contact-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: start; }
.contact-form-copy .section-title { margin-bottom: 16px; }
.contact-form-copy p { margin-bottom: 18px; }
.contact-form {
  background: #fff;
  border: 1px solid var(--green-line);
  border-radius: var(--radius);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  box-shadow: var(--shadow);
}
.contact-form .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form label { display: flex; flex-direction: column; gap: 7px; font-size: 13.5px; font-weight: 600; color: var(--ink); }
.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form select,
.contact-form textarea {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 15px;
  font-family: inherit;
  font-weight: 400;
  background: #fff;
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus {
  outline: 2px solid var(--green);
  outline-offset: 1px;
  border-color: var(--green);
}
.contact-form .form-consent { flex-direction: row; align-items: flex-start; gap: 9px; font-size: 12.5px; font-weight: 400; color: var(--muted); }
.contact-form .form-consent input { margin-top: 2px; }
.form-note { font-size: 13.5px; color: var(--green-deep); }

/* ---------- Social row ---------- */
.social-row { display: flex; gap: 10px; margin-top: 20px; }
.social-row a {
  width: 36px; height: 36px;
  border: 1px solid var(--line);
  border-radius: 9px;
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  transition: border-color .2s ease, color .2s ease, background .2s ease;
}
.social-row a:hover { border-color: var(--green); color: var(--green-deep); background: var(--green-tint); }

/* ---------- Photo wall ---------- */
.photo-wall { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.photo-wall img { border-radius: var(--radius-sm); aspect-ratio: 4/3; object-fit: cover; width: 100%; }

/* ---------- Responsive additions ---------- */
@media (max-width: 1024px) {
  .metric-strip { grid-template-columns: repeat(2,1fr); }
  .case-grid, .model-grid { grid-template-columns: repeat(2,1fr); }
  .subscribe-inner, .contact-form-grid { grid-template-columns: 1fr; gap: 36px; }
  .photo-wall { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 768px) {
  .case-grid, .model-grid, .photo-wall { grid-template-columns: 1fr; }
  .partner-banner { grid-template-columns: 1fr; padding: 32px; }
  .contact-form-section { padding: 72px 0; }
}

/* ---------- Light hero (home) ---------- */
.hero-light {
  position: relative;
  padding: 190px 0 120px;
  background: #fff;
  overflow: hidden;
}
.hero-light .hero-bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
}
.hero-light .container { position: relative; z-index: 1; }
.hero-light h1 {
  color: var(--ink);
  font-size: clamp(44px, 6.4vw, 84px);
  font-weight: 800;
  letter-spacing: -0.03em;
  max-width: 900px;
  margin-bottom: 22px;
}
.hero-light .lead { color: var(--body); max-width: 640px; }
@media (max-width: 768px) {
  .hero-light { padding: 130px 0 64px; }
}