:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-soft: #f1f5f9;
  --ink: #111827;
  --muted: #6b7280;
  --line: #e5e7eb;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --teal: #10b981;
  --dark: #08111f;
  --dark-2: #101a2b;
  --shadow: 0 18px 55px rgba(17, 24, 39, 0.08);
  --radius: 8px;
  --shell: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 12%, rgba(37, 99, 235, 0.08), transparent 26rem),
    radial-gradient(circle at 92% 8%, rgba(16, 185, 129, 0.08), transparent 24rem),
    var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  line-height: 1.7;
}

body.nav-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

button,
input,
select,
textarea {
  font: inherit;
}

.shell {
  width: min(var(--shell), calc(100% - 48px));
  margin: 0 auto;
}

.narrow {
  max-width: 880px;
}

.section-pad {
  padding: 104px 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(248, 250, 252, 0.86);
  border-bottom: 1px solid rgba(229, 231, 235, 0.78);
  backdrop-filter: blur(18px);
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--ink), var(--blue));
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 17px;
  line-height: 1.1;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: #374151;
  font-size: 14px;
}

.nav-links a {
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--blue);
}

.nav-cta {
  padding: 9px 14px;
  color: #ffffff !important;
  background: var(--ink);
  border-radius: var(--radius);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
  transition: transform 0.2s ease;
}

.hero {
  position: relative;
  min-height: calc(100vh - 72px);
  display: grid;
  align-items: center;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 68% 36%, rgba(37, 99, 235, 0.14), transparent 22rem),
    linear-gradient(rgba(37, 99, 235, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 185, 129, 0.055) 1px, transparent 1px);
  background-size: 100% 100%, 64px 64px, 64px 64px;
  mask-image: linear-gradient(to bottom, #000, transparent 82%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.9fr);
  align-items: center;
  gap: 58px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 700;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 820px;
  margin-bottom: 24px;
  font-size: clamp(40px, 4.6vw, 56px);
  line-height: 1.08;
  font-weight: 800;
}

h1 span {
  display: block;
  white-space: nowrap;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(32px, 4vw, 46px);
  line-height: 1.2;
  font-weight: 780;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.35;
}

.hero-lead {
  max-width: 760px;
  color: #4b5563;
  font-size: 19px;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: #ffffff;
  background: var(--blue);
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.22);
}

.btn-primary:hover {
  background: var(--blue-dark);
}

.btn-secondary {
  color: var(--ink);
  background: var(--surface);
  border-color: var(--line);
}

.btn-ghost {
  color: var(--blue);
  background: rgba(37, 99, 235, 0.08);
}

.btn-light {
  margin-top: 22px;
  color: #ffffff;
  background: var(--blue);
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.18);
}

.hero-keywords {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 34px 0 0;
}

.hero-keywords div {
  padding: 15px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(229, 231, 235, 0.9);
  border-radius: var(--radius);
}

.hero-keywords dt {
  margin-bottom: 4px;
  font-weight: 800;
}

.hero-keywords dd {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.hero-visual {
  position: relative;
  min-height: 520px;
  display: grid;
  align-items: center;
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid rgba(37, 99, 235, 0.14);
  border-radius: var(--radius);
  box-shadow: 0 22px 70px rgba(37, 99, 235, 0.12);
}

.visual-card {
  position: absolute;
  width: 148px;
  padding: 13px 14px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 14px 36px rgba(17, 24, 39, 0.1);
  backdrop-filter: blur(14px);
}

.visual-card span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.visual-card strong {
  font-size: 16px;
}

.visual-card-a {
  left: -24px;
  bottom: 72px;
}

.visual-card-b {
  right: -18px;
  top: 78px;
}

.intro-band {
  background: var(--surface);
}

.intro-band p:not(.eyebrow) {
  color: #4b5563;
  font-size: 18px;
}

.emphasis {
  margin-top: 28px;
  padding: 24px 28px;
  color: var(--ink) !important;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(16, 185, 129, 0.08));
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: var(--radius);
  font-weight: 760;
}

.section-head {
  max-width: 760px;
  margin-bottom: 42px;
}

.section-head-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 42px;
}

.section-head-row .section-head {
  margin-bottom: 0;
}

.compact-head {
  max-width: 800px;
}

.text-link {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
  color: var(--blue);
  font-weight: 760;
}

.text-link span {
  transition: transform 0.2s ease;
}

.text-link:hover span {
  transform: translateX(4px);
}

.section-head p:not(.eyebrow) {
  color: var(--muted);
  font-size: 18px;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.capability-card,
.service-card,
.compare-card,
.scene-column,
.founder-card,
.contact-form,
details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 1px 0 rgba(17, 24, 39, 0.02), inset 0 1px 0 rgba(255, 255, 255, 0.82);
}

.capability-card {
  position: relative;
  overflow: hidden;
  min-height: 246px;
  padding: 24px;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.capability-card::before,
.service-card::before,
.scene-column::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, rgba(37, 99, 235, 0.78), rgba(16, 185, 129, 0.72));
  opacity: 0;
  transition: opacity 0.2s ease;
}

.capability-card:hover,
.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, 0.32);
  box-shadow: 0 18px 55px rgba(37, 99, 235, 0.1);
}

.capability-card:hover::before,
.service-card:hover::before,
.scene-column:hover::before {
  opacity: 1;
}

.card-index {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--blue);
  background: rgba(37, 99, 235, 0.08);
  border-radius: var(--radius);
  font-weight: 800;
}

.capability-card p,
.service-card p,
.compare-card li,
.scene-column li,
.founder-card p {
  color: var(--muted);
}

.services {
  background: var(--surface);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.service-card {
  position: relative;
  overflow: hidden;
  padding: 26px;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.service-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.service-icon {
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: #ffffff;
  background: var(--ink);
  border-radius: var(--radius);
  font-weight: 800;
}

.service-card ul,
.compare-card ul,
.scene-column ul {
  display: grid;
  gap: 9px;
  padding: 0;
  margin: 20px 0 0;
  list-style: none;
}

.service-card li,
.compare-card li,
.scene-column li {
  position: relative;
  padding-left: 18px;
}

.service-card li::before,
.compare-card li::before,
.scene-column li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  background: var(--teal);
  border-radius: 50%;
}

.contrast {
  background: var(--surface-soft);
}

.featured-cases {
  background:
    radial-gradient(circle at 80% 28%, rgba(16, 185, 129, 0.08), transparent 24rem),
    var(--surface);
}

.case-showcase {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.55fr);
  gap: 20px;
}

.case-feature {
  display: grid;
  grid-template-columns: minmax(320px, 0.95fr) minmax(0, 1.05fr);
  min-height: 390px;
  overflow: hidden;
  background: #ffffff;
  border: 1px solid rgba(37, 99, 235, 0.14);
  border-radius: var(--radius);
  box-shadow: 0 22px 60px rgba(37, 99, 235, 0.08);
}

.case-visual {
  position: relative;
  min-height: 360px;
  overflow: hidden;
  background:
    linear-gradient(rgba(37, 99, 235, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 185, 129, 0.06) 1px, transparent 1px),
    linear-gradient(145deg, #f3f7ff, #edfdf8);
  background-size: 38px 38px, 38px 38px, 100% 100%;
}

.case-visual strong {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 150px;
  height: 150px;
  display: grid;
  place-items: center;
  color: #ffffff;
  background: linear-gradient(135deg, var(--blue), var(--teal));
  border-radius: var(--radius);
  box-shadow: 0 24px 54px rgba(37, 99, 235, 0.24);
  transform: translate(-50%, -50%);
  text-align: center;
  font-size: 22px;
  line-height: 1.35;
}

.case-node {
  position: absolute;
  padding: 9px 12px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(37, 99, 235, 0.14);
  border-radius: var(--radius);
  box-shadow: 0 10px 28px rgba(37, 99, 235, 0.08);
  color: #374151;
  font-size: 13px;
  font-weight: 700;
}

.node-a { left: 9%; top: 18%; }
.node-b { right: 8%; top: 19%; }
.node-c { left: 10%; bottom: 18%; }
.node-d { right: 8%; bottom: 17%; }

.case-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 40px;
}

.case-copy h3,
.insight-feature-copy h3 {
  margin: 14px 0;
  font-size: 29px;
}

.case-copy p,
.case-mini p,
.insight-feature-copy p,
.insight-row p {
  color: var(--muted);
}

.card-action {
  margin-top: 18px;
  color: var(--blue);
  font-weight: 760;
}

.case-stack {
  display: grid;
  gap: 20px;
}

.case-mini {
  position: relative;
  min-height: 185px;
  padding: 28px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.case-mini::after {
  content: "";
  position: absolute;
  right: -36px;
  bottom: -50px;
  width: 140px;
  height: 140px;
  border: 1px solid rgba(37, 99, 235, 0.12);
  border-radius: 50%;
  box-shadow: 0 0 0 22px rgba(37, 99, 235, 0.03), 0 0 0 45px rgba(16, 185, 129, 0.025);
}

.content-label {
  display: inline-flex;
  width: fit-content;
  padding: 4px 8px;
  color: var(--blue);
  background: rgba(37, 99, 235, 0.08);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 800;
}

.teal-label {
  color: #047857;
  background: rgba(16, 185, 129, 0.1);
}

.neutral-label {
  color: #4b5563;
  background: rgba(107, 114, 128, 0.1);
}

.insights-section {
  background:
    radial-gradient(circle at 18% 30%, rgba(37, 99, 235, 0.1), transparent 28rem),
    #f8fafc;
}

.insight-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(380px, 0.9fr);
  gap: 20px;
}

.insight-feature {
  overflow: hidden;
  background: #ffffff;
  border: 1px solid rgba(37, 99, 235, 0.14);
  border-radius: var(--radius);
  box-shadow: 0 18px 50px rgba(37, 99, 235, 0.07);
}

.insight-art {
  position: relative;
  min-height: 250px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  align-items: center;
  gap: 20px;
  padding: 38px;
  background:
    linear-gradient(rgba(37, 99, 235, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 185, 129, 0.05) 1px, transparent 1px),
    linear-gradient(135deg, #eef4ff, #effdf8);
  background-size: 42px 42px, 42px 42px, 100% 100%;
}

.insight-art span {
  position: relative;
  z-index: 2;
  display: grid;
  place-items: center;
  min-height: 70px;
  color: #1f2937;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: var(--radius);
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.09);
  font-weight: 800;
}

.insight-flow-line {
  position: absolute;
  left: 12%;
  right: 12%;
  top: 50%;
  height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--teal));
}

.insight-feature-copy {
  padding: 30px;
}

.insight-feature-copy small {
  color: #9ca3af;
}

.insight-list {
  display: grid;
  gap: 12px;
}

.insight-row {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 18px;
  align-items: start;
  padding: 23px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.insight-row:hover {
  transform: translateX(4px);
  border-color: rgba(37, 99, 235, 0.24);
  box-shadow: 0 14px 34px rgba(37, 99, 235, 0.07);
}

.insight-number {
  color: #94a3b8;
  font-size: 22px;
  font-weight: 800;
}

.insight-row h3 {
  margin: 8px 0 4px;
  font-size: 19px;
}

.insight-row p {
  margin-bottom: 0;
  font-size: 14px;
}

.community-bridge {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.9fr) auto;
  gap: 28px;
  align-items: center;
  margin-top: 28px;
  padding: 30px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(236, 253, 245, 0.92));
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius);
  box-shadow: 0 18px 45px rgba(15, 118, 110, 0.06);
}

.community-bridge h3 {
  margin: 12px 0 8px;
  font-size: 25px;
}

.community-bridge p,
.community-bridge small,
.hub-note-action small,
.community-cta small {
  color: var(--muted);
}

.community-bridge p {
  margin-bottom: 0;
}

.community-bridge-path {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  align-items: center;
}

.community-bridge-path div {
  min-height: 96px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.community-bridge-path strong,
.community-bridge-path span {
  display: block;
}

.community-bridge-path span {
  margin-top: 7px;
  color: var(--muted);
  font-size: 13px;
}

.path-arrow {
  color: var(--teal);
  font-weight: 800;
}

.community-bridge-actions,
.hub-note-action {
  display: grid;
  gap: 9px;
  justify-items: start;
}

.community-bridge-actions small,
.hub-note-action small,
.community-cta small {
  max-width: 260px;
  font-size: 12px;
  line-height: 1.5;
}

.founder-link {
  margin-top: 22px;
}

/* Content hubs and detail pages */
.subpage-main {
  min-height: 70vh;
}

.subpage-hero {
  position: relative;
  padding: 92px 0 72px;
  overflow: hidden;
  background:
    radial-gradient(circle at 82% 25%, rgba(37, 99, 235, 0.12), transparent 24rem),
    radial-gradient(circle at 15% 80%, rgba(16, 185, 129, 0.09), transparent 22rem),
    linear-gradient(rgba(37, 99, 235, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 185, 129, 0.04) 1px, transparent 1px),
    #f8fafc;
  background-size: 100% 100%, 100% 100%, 54px 54px, 54px 54px, 100% 100%;
}

.subpage-hero h1 {
  max-width: 900px;
}

.subpage-hero p:not(.eyebrow) {
  max-width: 760px;
  color: #4b5563;
  font-size: 19px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
  color: #64748b;
  font-size: 14px;
}

.breadcrumb a:hover {
  color: var(--blue);
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 34px;
}

.filter-chip {
  padding: 8px 12px;
  color: #4b5563;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 14px;
}

.filter-chip.active {
  color: #ffffff;
  background: var(--blue);
  border-color: var(--blue);
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.content-card {
  display: flex;
  min-height: 310px;
  flex-direction: column;
  padding: 26px;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.content-card:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, 0.25);
  box-shadow: 0 18px 45px rgba(37, 99, 235, 0.08);
}

.content-card h2,
.content-card h3 {
  margin: 16px 0 12px;
  font-size: 24px;
}

.content-card p {
  color: var(--muted);
}

.content-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: auto;
  padding-top: 20px;
  color: #94a3b8;
  font-size: 13px;
}

.hub-note {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 30px;
  align-items: center;
  margin-top: 54px;
  padding: 30px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(16, 185, 129, 0.08));
  border: 1px solid rgba(37, 99, 235, 0.14);
  border-radius: var(--radius);
}

.hub-note h2 {
  margin-bottom: 8px;
  font-size: 27px;
}

.hub-note p {
  margin-bottom: 0;
  color: #4b5563;
}

.community-benefits {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.community-benefits span {
  padding: 7px 10px;
  color: #047857;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(16, 185, 129, 0.16);
  border-radius: 4px;
  font-size: 13px;
  font-weight: 700;
}

.article-shell {
  width: min(900px, calc(100% - 48px));
  margin: 0 auto;
}

.article-header {
  padding: 74px 0 46px;
  border-bottom: 1px solid var(--line);
}

.article-header h1 {
  max-width: 880px;
  font-size: clamp(38px, 5vw, 58px);
}

.article-deck {
  color: #4b5563;
  font-size: 20px;
}

.article-byline {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  color: #64748b;
  font-size: 14px;
}

.article-body {
  padding: 50px 0 82px;
}

.article-body h2 {
  margin-top: 48px;
  font-size: 31px;
}

.article-body h3 {
  margin-top: 34px;
}

.article-body p,
.article-body li {
  color: #374151;
  font-size: 18px;
  line-height: 1.9;
}

.article-body ul,
.article-body ol {
  display: grid;
  gap: 10px;
  padding-left: 24px;
}

.article-summary,
.article-callout {
  margin: 30px 0;
  padding: 24px 26px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.07), rgba(16, 185, 129, 0.07));
  border: 1px solid rgba(37, 99, 235, 0.14);
  border-radius: var(--radius);
}

.article-summary strong,
.article-callout strong {
  display: block;
  margin-bottom: 8px;
}

.article-figure {
  margin: 38px 0;
  padding: 32px;
  background:
    linear-gradient(rgba(37, 99, 235, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 185, 129, 0.05) 1px, transparent 1px),
    #f8fafc;
  background-size: 42px 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.process-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.process-strip span {
  display: grid;
  min-height: 80px;
  place-items: center;
  padding: 12px;
  color: #1f2937;
  background: #ffffff;
  border: 1px solid rgba(37, 99, 235, 0.14);
  border-radius: var(--radius);
  text-align: center;
  font-weight: 800;
}

.community-cta {
  margin-top: 52px;
  padding: 32px;
  background: linear-gradient(135deg, #eff6ff, #ecfdf5);
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: var(--radius);
}

.community-cta h2 {
  margin-top: 12px;
}

.community-cta .btn {
  margin-right: 12px;
}

.community-cta small {
  display: inline-block;
  vertical-align: middle;
}

.case-detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 28px 0;
}

.case-fact {
  padding: 20px;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.case-fact span {
  display: block;
  color: #94a3b8;
  font-size: 13px;
}

.case-fact strong {
  display: block;
  margin-top: 5px;
}

.timeline-list {
  display: grid;
  gap: 16px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 22px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.timeline-item time {
  color: var(--blue);
  font-weight: 800;
}

.author-profile {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 42px;
  align-items: start;
}

.author-avatar {
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  color: #ffffff;
  background:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(135deg, var(--blue), var(--teal));
  background-size: 28px 28px, 28px 28px, 100% 100%;
  border-radius: var(--radius);
  font-size: 64px;
  font-weight: 900;
}

@media (max-width: 900px) {
  .content-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .author-profile {
    grid-template-columns: 170px 1fr;
  }
}

@media (max-width: 620px) {
  .content-grid,
  .hub-note,
  .process-strip,
  .case-detail-grid,
  .author-profile {
    grid-template-columns: 1fr;
  }

  .article-shell {
    width: min(100% - 32px, 900px);
  }

  .article-header {
    padding-top: 54px;
  }

  .article-body p,
  .article-body li {
    font-size: 17px;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .author-avatar {
    width: 150px;
  }
}

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

.compare-card {
  padding: 32px;
}

.compare-card.muted {
  background: #f8fafc;
}

.compare-card.highlight {
  background: linear-gradient(135deg, #ffffff, rgba(16, 185, 129, 0.08));
  border-color: rgba(16, 185, 129, 0.24);
}

.compare-card.highlight h3 {
  color: var(--blue);
}

.opc-section {
  position: relative;
  color: var(--ink);
  background:
    radial-gradient(circle at 78% 25%, rgba(37, 99, 235, 0.16), transparent 27rem),
    radial-gradient(circle at 22% 70%, rgba(16, 185, 129, 0.12), transparent 24rem),
    linear-gradient(180deg, #ffffff 0%, #f1f7ff 54%, #f8fafc 100%);
  border-top: 1px solid rgba(37, 99, 235, 0.1);
  border-bottom: 1px solid rgba(37, 99, 235, 0.1);
  overflow: hidden;
}

.opc-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(37, 99, 235, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 185, 129, 0.045) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: linear-gradient(90deg, transparent, #000 18%, #000 82%, transparent);
  pointer-events: none;
}

.opc-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(420px, 1fr);
  align-items: center;
  gap: 52px;
}

.opc-section p {
  color: #4b5563;
  font-size: 18px;
}

.on-dark {
  color: var(--blue);
}

.opc-model {
  position: relative;
  min-height: 430px;
  border: 1px solid rgba(37, 99, 235, 0.14);
  border-radius: var(--radius);
  background:
    linear-gradient(rgba(37, 99, 235, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 185, 129, 0.055) 1px, transparent 1px),
    rgba(255, 255, 255, 0.74);
  background-size: 42px 42px;
  box-shadow: 0 24px 70px rgba(37, 99, 235, 0.1);
  backdrop-filter: blur(14px);
}

.opc-center,
.opc-model span {
  position: absolute;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
}

.opc-center {
  width: 118px;
  height: 118px;
  left: 50%;
  top: 50%;
  color: #ffffff;
  background: linear-gradient(135deg, var(--blue), var(--teal));
  box-shadow: 0 0 64px rgba(37, 99, 235, 0.28);
  transform: translate(-50%, -50%);
  font-size: 28px;
  font-weight: 900;
}

.opc-model span {
  width: 116px;
  height: 48px;
  color: #1f2937;
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(37, 99, 235, 0.14);
  box-shadow: 0 12px 34px rgba(37, 99, 235, 0.08);
  animation: breathe 4s ease-in-out infinite;
}

.opc-model span:nth-of-type(1) {
  left: 11%;
  top: 16%;
}

.opc-model span:nth-of-type(2) {
  right: 12%;
  top: 18%;
  animation-delay: 0.2s;
}

.opc-model span:nth-of-type(3) {
  left: 7%;
  bottom: 21%;
  animation-delay: 0.4s;
}

.opc-model span:nth-of-type(4) {
  right: 9%;
  bottom: 20%;
  animation-delay: 0.6s;
}

.opc-model span:nth-of-type(5) {
  left: 39%;
  top: 7%;
  animation-delay: 0.8s;
}

.opc-model span:nth-of-type(6) {
  left: 39%;
  bottom: 8%;
  animation-delay: 1s;
}

@keyframes breathe {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

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

.scene-column {
  position: relative;
  overflow: hidden;
  padding: 32px;
}

.about-band {
  background: var(--surface);
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 44px;
  align-items: start;
}

.about-grid p {
  color: #4b5563;
  font-size: 17px;
}

.founder-card {
  padding: 28px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.tag-list span {
  padding: 7px 10px;
  color: var(--blue);
  background: rgba(37, 99, 235, 0.08);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 700;
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 920px;
}

details {
  padding: 22px 24px;
}

summary {
  cursor: pointer;
  font-size: 18px;
  font-weight: 760;
}

details p {
  margin: 16px 0 0;
  color: var(--muted);
}

.contact-section {
  background: var(--surface-soft);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(460px, 1fr);
  gap: 44px;
  align-items: start;
}

.contact-grid p {
  color: #4b5563;
  font-size: 17px;
}

.contact-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding: 28px;
}

.contact-form label {
  display: grid;
  gap: 7px;
  color: #374151;
  font-size: 14px;
  font-weight: 700;
}

.span-full {
  grid-column: 1 / -1;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  color: var(--ink);
  outline: none;
}

input,
select {
  height: 46px;
  padding: 0 12px;
}

textarea {
  resize: vertical;
  padding: 12px;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.site-footer {
  padding: 44px 0;
  color: rgba(255, 255, 255, 0.76);
  background: var(--ink);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: start;
}

.footer-brand {
  color: #ffffff;
}

.footer-brand small {
  color: rgba(255, 255, 255, 0.62);
}

.site-footer p {
  max-width: 620px;
  margin: 18px 0 0;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: 10px 28px;
  font-size: 14px;
}

.footer-links a:hover {
  color: #ffffff;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1100px) {
  .hero-grid,
  .opc-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: auto;
  }

  .capability-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-showcase,
  .insight-layout,
  .community-bridge {
    grid-template-columns: 1fr;
  }

  .case-stack {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 820px) {
  .shell {
    width: min(100% - 32px, var(--shell));
  }

  .section-pad {
    padding: 76px 0;
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    inset: 72px 16px auto 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }

  .nav-links a {
    padding: 13px 12px;
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-open .nav-toggle span:first-child {
    transform: translateY(3.5px) rotate(45deg);
  }

  .nav-open .nav-toggle span:last-child {
    transform: translateY(-3.5px) rotate(-45deg);
  }

  .hero {
    min-height: auto;
  }

  h1 {
    font-size: 42px;
  }

  .hero-lead {
    font-size: 17px;
  }

  .hero-keywords,
  .capability-grid,
  .compare-grid,
  .scene-grid,
  .about-grid,
  .footer-grid,
  .case-feature {
    grid-template-columns: 1fr;
  }

  .section-head-row {
    align-items: start;
    flex-direction: column;
  }

  .case-stack {
    grid-template-columns: 1fr;
  }

  .insight-art {
    min-height: 220px;
  }

  .community-bridge-path {
    max-width: 620px;
  }

  .service-grid {
    grid-template-columns: 1fr;
  }

  .contact-form {
    grid-template-columns: 1fr;
  }

  .visual-card {
    display: none;
  }

  .opc-model {
    min-height: 360px;
  }
}

@media (max-width: 560px) {
  .section-pad {
    padding: 62px 0;
  }

  h1 {
    font-size: 36px;
  }

  h1 span {
    white-space: normal;
  }

  h2 {
    font-size: 30px;
  }

  .hero-actions,
  .contact-actions,
  .btn {
    width: 100%;
  }

  .hero-actions .btn,
  .contact-actions .btn {
    justify-content: center;
  }

  .capability-card,
  .service-card,
  .compare-card,
  .scene-column,
  .founder-card,
  .contact-form,
  .case-copy,
  .case-mini,
  .insight-feature-copy {
    padding: 22px;
  }

  .case-visual {
    min-height: 300px;
  }

  .insight-art {
    grid-template-columns: repeat(2, 1fr);
    padding: 24px;
  }

  .insight-flow-line {
    display: none;
  }

  .community-bridge,
  .hub-note {
    padding: 22px;
  }

  .community-bridge-path {
    grid-template-columns: 1fr;
  }

  .path-arrow {
    transform: rotate(90deg);
    justify-self: center;
  }

  .community-bridge-actions,
  .hub-note-action {
    width: 100%;
  }

  .community-bridge-actions small,
  .hub-note-action small {
    max-width: none;
  }

  .opc-model {
    min-height: 320px;
  }

  .opc-model span {
    width: 98px;
    height: 42px;
    font-size: 13px;
  }

  .opc-center {
    width: 94px;
    height: 94px;
    font-size: 23px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}