/* Sivion Technology Enterprises — company portfolio */
:root {
  --sv-bg: #04060a;
  --sv-bg-2: #070b12;
  --sv-navy: #0a1424;
  --sv-text: #f3f6fb;
  --sv-muted: #8b9bb0;
  --sv-dim: #5c6d82;
  --sv-line: rgba(148, 163, 184, 0.12);
  --sv-line-strong: rgba(56, 189, 248, 0.28);
  --sv-cyan: #22d3ee;
  --sv-blue: #38bdf8;
  --sv-blue-deep: #0ea5e9;
  --sv-glow: rgba(34, 211, 238, 0.14);
  --sv-glass: rgba(255, 255, 255, 0.03);
  --sv-glass-hover: rgba(255, 255, 255, 0.055);
  --sv-radius: 14px;
  --sv-radius-sm: 10px;
  --sv-max: 1140px;
  --sv-display: "Syne", system-ui, sans-serif;
  --sv-body: "DM Sans", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--sv-body);
  background: var(--sv-bg);
  color: var(--sv-text);
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--sv-blue);
  text-decoration: none;
}

a:hover {
  color: var(--sv-cyan);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--sv-cyan);
  outline-offset: 3px;
}

.sv-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 12px 16px;
  background: var(--sv-cyan);
  color: #041016;
  font-weight: 600;
}

.sv-skip:focus {
  left: 16px;
  top: 16px;
}

/* —— Nav —— */
.sv-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(4, 6, 10, 0.82);
  border-bottom: 1px solid var(--sv-line);
}

.sv-nav__inner {
  max-width: var(--sv-max);
  margin: 0 auto;
  padding: 12px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.sv-nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--sv-text);
  font-family: var(--sv-display);
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
}

.sv-nav__brand img {
  height: 32px;
  width: auto;
}

.sv-nav__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 14px;
}

.sv-nav__links a {
  color: var(--sv-muted);
  font-size: 0.84rem;
  font-weight: 500;
}

.sv-nav__links a:hover {
  color: var(--sv-text);
}

.sv-nav__cta {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--sv-line-strong);
  color: var(--sv-cyan) !important;
  font-size: 0.8rem !important;
  font-weight: 600 !important;
  transition: background 0.2s, box-shadow 0.2s;
}

.sv-nav__cta:hover {
  background: rgba(34, 211, 238, 0.08);
  box-shadow: 0 0 24px var(--sv-glow);
}

.sv-nav__toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--sv-line);
  color: var(--sv-text);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
}

.sv-nav__toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  margin: 3px 0;
}

@media (max-width: 820px) {
  .sv-nav__toggle {
    display: block;
  }
  .sv-nav__links {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 22px 18px;
    background: rgba(6, 10, 16, 0.98);
    border-bottom: 1px solid var(--sv-line);
  }
  .sv-nav.is-open .sv-nav__links {
    display: flex;
  }
  .sv-nav__links a {
    padding: 10px 0;
    border-bottom: 1px solid var(--sv-line);
  }
  .sv-nav__cta {
    margin-top: 8px;
    justify-content: center;
  }
}

/* —— Layout —— */
.sv-section {
  position: relative;
  padding: 88px 22px;
}

.sv-section--tight {
  padding-top: 56px;
  padding-bottom: 56px;
}

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

.sv-eyebrow {
  margin: 0 0 10px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sv-cyan);
}

.sv-h2 {
  margin: 0 0 16px;
  font-family: var(--sv-display);
  font-size: clamp(1.85rem, 4vw, 2.7rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.12;
}

.sv-lead {
  margin: 0;
  max-width: 640px;
  color: var(--sv-muted);
  font-size: 1.05rem;
}

.sv-reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.sv-reveal.is-visible {
  opacity: 1;
  transform: none;
}

.sv-stagger > .sv-reveal:nth-child(1) {
  transition-delay: 0.05s;
}
.sv-stagger > .sv-reveal:nth-child(2) {
  transition-delay: 0.1s;
}
.sv-stagger > .sv-reveal:nth-child(3) {
  transition-delay: 0.15s;
}
.sv-stagger > .sv-reveal:nth-child(4) {
  transition-delay: 0.2s;
}
.sv-stagger > .sv-reveal:nth-child(5) {
  transition-delay: 0.25s;
}
.sv-stagger > .sv-reveal:nth-child(6) {
  transition-delay: 0.3s;
}

.sv-section + .sv-section {
  border-top: 1px solid rgba(148, 163, 184, 0.06);
}

/* —— Buttons —— */
.sv-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: 999px;
  font-family: var(--sv-body);
  font-size: 0.92rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease,
    box-shadow 0.18s ease, color 0.18s ease;
}

.sv-btn:hover {
  transform: translateY(-1px);
}

.sv-btn--primary {
  background: linear-gradient(135deg, var(--sv-cyan), var(--sv-blue-deep));
  color: #041016;
  box-shadow: 0 10px 36px rgba(14, 165, 233, 0.28);
}

.sv-btn--primary:hover {
  color: #041016;
  box-shadow: 0 14px 40px rgba(34, 211, 238, 0.35);
}

.sv-btn--ghost {
  background: transparent;
  border-color: var(--sv-line);
  color: var(--sv-text);
}

.sv-btn--ghost:hover {
  border-color: var(--sv-line-strong);
  color: var(--sv-cyan);
  box-shadow: 0 0 28px var(--sv-glow);
}

.sv-btn--subtle {
  background: transparent;
  border: none;
  color: var(--sv-muted);
  padding-left: 8px;
  padding-right: 8px;
}

.sv-btn--subtle:hover {
  color: var(--sv-cyan);
  transform: none;
}

.sv-btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* —— Hero —— */
.sv-hero {
  position: relative;
  min-height: min(100vh, 900px);
  display: flex;
  align-items: center;
  padding: 64px 22px 72px;
  overflow: hidden;
}

.sv-hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 65% 50% at 75% 25%, rgba(14, 165, 233, 0.18), transparent 55%),
    radial-gradient(ellipse 45% 40% at 10% 75%, rgba(34, 211, 238, 0.08), transparent 50%),
    linear-gradient(180deg, #071018 0%, var(--sv-bg) 58%, #04060a 100%);
  pointer-events: none;
}

.sv-hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(56, 189, 248, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, 0.05) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(ellipse 80% 70% at 55% 40%, #000 15%, transparent 75%);
  opacity: 0.6;
  animation: sv-grid-drift 30s linear infinite;
}

.sv-hero__nodes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.55;
}

.sv-hero__nodes span {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(125, 211, 252, 0.85);
  box-shadow: 0 0 12px rgba(34, 211, 238, 0.55);
}

.sv-hero__nodes span:nth-child(1) {
  left: 18%;
  top: 28%;
}
.sv-hero__nodes span:nth-child(2) {
  left: 32%;
  top: 62%;
}
.sv-hero__nodes span:nth-child(3) {
  left: 68%;
  top: 22%;
}
.sv-hero__nodes span:nth-child(4) {
  left: 78%;
  top: 58%;
}
.sv-hero__nodes span:nth-child(5) {
  left: 52%;
  top: 72%;
}

.sv-hero__nodes i {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56, 189, 248, 0.45), transparent);
  animation: sv-line 10s ease-in-out infinite;
}

.sv-hero__nodes i:nth-child(6) {
  width: 140px;
  left: 18%;
  top: 30%;
  transform: rotate(18deg);
}
.sv-hero__nodes i:nth-child(7) {
  width: 120px;
  left: 62%;
  top: 40%;
  transform: rotate(-12deg);
  animation-delay: -3s;
}
.sv-hero__nodes i:nth-child(8) {
  width: 100px;
  left: 40%;
  top: 65%;
  transform: rotate(8deg);
  animation-delay: -5s;
}

@keyframes sv-grid-drift {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(52px);
  }
}

@keyframes sv-line {
  0%,
  100% {
    opacity: 0.25;
  }
  50% {
    opacity: 0.8;
  }
}

.sv-hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--sv-max);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.sv-hero__logos {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 22px;
}

.sv-hero__logos img {
  height: 48px;
  width: auto;
  object-fit: contain;
}

.sv-hero__logos img:last-child {
  height: 40px;
}

.sv-hero h1 {
  margin: 0 0 16px;
  font-family: var(--sv-display);
  font-size: clamp(2.1rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.08;
  max-width: 14ch;
}

.sv-hero__desc {
  margin: 0 0 28px;
  color: var(--sv-muted);
  font-size: 1.05rem;
  max-width: 48ch;
}

.sv-hero__visual {
  position: relative;
  min-height: 360px;
}

.sv-hero__stage {
  position: relative;
  height: 100%;
  min-height: 360px;
  border: 1px solid var(--sv-line);
  border-radius: calc(var(--sv-radius) + 6px);
  background:
    radial-gradient(circle at 40% 30%, rgba(34, 211, 238, 0.12), transparent 45%),
    linear-gradient(160deg, rgba(10, 20, 36, 0.9), rgba(4, 6, 10, 0.7));
  overflow: hidden;
  box-shadow: 0 0 60px rgba(14, 165, 233, 0.1);
}

.sv-hero__stage-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(56, 189, 248, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, 0.07) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.45;
}

.sv-float-card {
  position: absolute;
  border: 1px solid var(--sv-line-strong);
  border-radius: 12px;
  background: rgba(8, 14, 24, 0.88);
  backdrop-filter: blur(8px);
  padding: 12px 14px;
  font-size: 0.78rem;
  color: #c5d4e4;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
  animation: sv-float 8s ease-in-out infinite;
}

.sv-float-card strong {
  display: block;
  font-family: var(--sv-display);
  font-size: 0.82rem;
  color: var(--sv-cyan);
  margin-bottom: 2px;
}

.sv-float-card--1 {
  left: 10%;
  top: 18%;
  animation-delay: 0s;
}
.sv-float-card--2 {
  right: 10%;
  top: 36%;
  animation-delay: -2s;
}
.sv-float-card--3 {
  left: 18%;
  bottom: 18%;
  animation-delay: -4s;
}

.sv-code-chip {
  position: absolute;
  right: 14%;
  bottom: 28%;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.68rem;
  color: rgba(125, 211, 252, 0.75);
  letter-spacing: 0.02em;
  line-height: 1.5;
  opacity: 0.85;
}

@keyframes sv-float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@media (max-width: 900px) {
  .sv-hero__inner {
    grid-template-columns: 1fr;
  }
  .sv-hero {
    min-height: auto;
    padding-top: 40px;
  }
  .sv-hero h1 {
    max-width: none;
  }
  .sv-hero__visual {
    min-height: 280px;
  }
  .sv-hero__stage {
    min-height: 280px;
  }
}

/* —— About —— */
.sv-about {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 36px;
  align-items: start;
}

.sv-about__copy p {
  margin: 0 0 16px;
  color: #c5d0dc;
  font-size: 1.02rem;
}

.sv-about__copy p:last-child {
  margin-bottom: 0;
}

.sv-about__cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.sv-mini {
  border: 1px solid var(--sv-line);
  border-radius: var(--sv-radius);
  background: var(--sv-glass);
  padding: 18px 16px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.sv-mini:hover {
  border-color: var(--sv-line-strong);
  box-shadow: 0 0 28px var(--sv-glow);
}

.sv-mini__label {
  display: block;
  font-family: var(--sv-display);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--sv-cyan);
  margin-bottom: 8px;
}

.sv-mini p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--sv-muted);
  font-weight: 500;
}

@media (max-width: 860px) {
  .sv-about {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .sv-about__cards {
    grid-template-columns: 1fr;
  }
}

/* —— Build cards —— */
.sv-build-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 32px;
}

.sv-build-card {
  border: 1px solid var(--sv-line);
  border-radius: var(--sv-radius);
  background: var(--sv-glass);
  padding: 24px 20px;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s, transform 0.2s;
}

.sv-build-card:hover {
  border-color: var(--sv-line-strong);
  background: var(--sv-glass-hover);
  box-shadow: 0 0 32px var(--sv-glow);
  transform: translateY(-2px);
}

.sv-build-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.sv-build-card__num {
  font-family: var(--sv-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--sv-cyan);
}

.sv-build-card__icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--sv-line);
  display: grid;
  place-items: center;
  color: var(--sv-blue);
}

.sv-build-card__icon svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sv-build-card h3 {
  margin: 0 0 8px;
  font-family: var(--sv-display);
  font-size: 1.05rem;
}

.sv-build-card p {
  margin: 0;
  color: var(--sv-muted);
  font-size: 0.92rem;
}

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

@media (max-width: 540px) {
  .sv-build-grid {
    grid-template-columns: 1fr;
  }
}

/* —— Flagship —— */
.sv-flagship {
  border: 1px solid var(--sv-line);
  border-radius: calc(var(--sv-radius) + 6px);
  background:
    radial-gradient(ellipse 70% 60% at 90% 10%, rgba(14, 165, 233, 0.12), transparent 50%),
    linear-gradient(180deg, rgba(10, 20, 36, 0.7), rgba(4, 6, 10, 0.4));
  padding: 36px 28px;
  overflow: hidden;
}

.sv-flagship__title {
  margin: 8px 0 10px;
  font-family: var(--sv-display);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.sv-flagship__sub {
  margin: 0 0 14px;
  color: var(--sv-cyan);
  font-weight: 600;
  font-size: 0.95rem;
}

.sv-flagship__features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 28px 0 24px;
}

.sv-flag-item {
  border: 1px solid var(--sv-line);
  border-radius: var(--sv-radius-sm);
  background: rgba(255, 255, 255, 0.025);
  padding: 18px 16px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.sv-flag-item:hover {
  border-color: var(--sv-line-strong);
  box-shadow: 0 0 24px var(--sv-glow);
}

.sv-flag-item h3 {
  margin: 0 0 6px;
  font-family: var(--sv-display);
  font-size: 0.98rem;
}

.sv-flag-item p {
  margin: 0;
  color: var(--sv-muted);
  font-size: 0.88rem;
}

@media (max-width: 800px) {
  .sv-flagship__features {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .sv-flagship__features {
    grid-template-columns: 1fr;
  }
  .sv-flagship {
    padding: 28px 18px;
  }
}

/* —— Architecture —— */
.sv-arch {
  border: 1px solid var(--sv-line);
  border-radius: calc(var(--sv-radius) + 4px);
  background: linear-gradient(180deg, rgba(10, 22, 40, 0.55), rgba(4, 6, 10, 0.35));
  padding: 28px 22px;
  margin-top: 28px;
}

.sv-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 4px;
}

.sv-flow__node {
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--sv-line-strong);
  background: rgba(14, 165, 233, 0.08);
  font-family: var(--sv-display);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #b6e8ff;
  white-space: nowrap;
}

.sv-flow__arrow {
  color: var(--sv-dim);
  font-size: 0.85rem;
}

.sv-arch__note {
  margin: 22px auto 0;
  max-width: 720px;
  text-align: center;
  color: var(--sv-muted);
  font-size: 0.95rem;
}

@media (max-width: 900px) {
  .sv-flow__arrow {
    display: none;
  }
}

/* —— Tech —— */
.sv-tech-groups {
  display: grid;
  gap: 22px;
  margin-top: 28px;
}

.sv-tech-group h3 {
  margin: 0 0 12px;
  font-family: var(--sv-display);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--sv-cyan);
}

.sv-tech-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.sv-tech-card {
  padding: 11px 15px;
  border-radius: var(--sv-radius-sm);
  border: 1px solid var(--sv-line);
  background: var(--sv-glass);
  font-size: 0.88rem;
  font-weight: 500;
  color: #d7e2ee;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.sv-tech-card:hover {
  border-color: var(--sv-line-strong);
  box-shadow: 0 0 24px var(--sv-glow);
  transform: translateY(-1px);
}

/* —— Process —— */
.sv-process {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  margin-top: 32px;
  position: relative;
}

.sv-process__step {
  border-top: 1px solid var(--sv-line-strong);
  padding: 18px 6px 8px;
  min-height: 150px;
  transition: border-color 0.2s;
}

.sv-process__step:hover {
  border-top-color: var(--sv-cyan);
}

.sv-process__num {
  display: block;
  font-family: var(--sv-display);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--sv-cyan);
  margin-bottom: 12px;
}

.sv-process__step h3 {
  margin: 0 0 8px;
  font-family: var(--sv-display);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
}

.sv-process__step p {
  margin: 0;
  color: var(--sv-muted);
  font-size: 0.86rem;
}

@media (max-width: 1000px) {
  .sv-process {
    grid-template-columns: 1fr;
    gap: 0;
    padding-left: 24px;
  }
  .sv-process::before {
    content: "";
    position: absolute;
    left: 7px;
    top: 8px;
    bottom: 8px;
    width: 1px;
    background: linear-gradient(180deg, var(--sv-cyan), rgba(56, 189, 248, 0.15));
  }
  .sv-process__step {
    border-top: none;
    position: relative;
    padding: 0 0 24px 16px;
    min-height: 0;
  }
  .sv-process__step::before {
    content: "";
    position: absolute;
    left: -24px;
    top: 4px;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    border: 2px solid var(--sv-cyan);
    background: var(--sv-bg);
    box-shadow: 0 0 12px rgba(34, 211, 238, 0.4);
  }
}

/* —— Philosophy —— */
.sv-think {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px 48px;
  margin-top: 36px;
}

.sv-think__item {
  border-left: 1px solid var(--sv-line-strong);
  padding-left: 20px;
}

.sv-think__item h3 {
  margin: 0 0 10px;
  font-family: var(--sv-display);
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  letter-spacing: -0.02em;
}

.sv-think__item p {
  margin: 0;
  color: var(--sv-muted);
  font-size: 1rem;
  max-width: 36ch;
}

@media (max-width: 700px) {
  .sv-think {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

/* —— Projects —— */
.sv-projects {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.sv-project {
  border: 1px solid var(--sv-line);
  border-radius: var(--sv-radius);
  background: var(--sv-glass);
  padding: 26px 24px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.sv-project:hover {
  border-color: var(--sv-line-strong);
  box-shadow: 0 0 36px var(--sv-glow);
}

.sv-project__idx {
  font-family: var(--sv-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--sv-cyan);
  letter-spacing: 0.1em;
  padding-top: 4px;
}

.sv-project h3 {
  margin: 0 0 8px;
  font-family: var(--sv-display);
  font-size: 1.3rem;
}

.sv-project__meta {
  margin: 0 0 10px;
  color: var(--sv-dim);
  font-size: 0.86rem;
}

.sv-project p {
  margin: 0 0 14px;
  color: var(--sv-muted);
  font-size: 0.95rem;
  max-width: 62ch;
}

.sv-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.sv-tag {
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid rgba(56, 189, 248, 0.22);
  background: rgba(14, 165, 233, 0.08);
  color: #9fdcf8;
  font-size: 0.72rem;
  font-weight: 600;
}

.sv-project__link {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--sv-cyan);
}

.sv-project__link:hover {
  text-decoration: underline;
}

@media (max-width: 560px) {
  .sv-project {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

/* —— Timeline —— */
.sv-timeline {
  position: relative;
  margin-top: 36px;
  padding-left: 28px;
}

.sv-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--sv-cyan), rgba(56, 189, 248, 0.15));
}

.sv-timeline__item {
  position: relative;
  padding: 0 0 28px 20px;
}

.sv-timeline__item:last-child {
  padding-bottom: 0;
}

.sv-timeline__dot {
  position: absolute;
  left: -28px;
  top: 6px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--sv-bg);
  border: 2px solid var(--sv-cyan);
  box-shadow: 0 0 16px rgba(34, 211, 238, 0.45);
}

.sv-timeline__year {
  margin: 0 0 6px;
  font-family: var(--sv-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--sv-cyan);
}

.sv-timeline__item h3 {
  margin: 0 0 8px;
  font-family: var(--sv-display);
  font-size: 1.05rem;
}

.sv-timeline__item p {
  margin: 0;
  color: var(--sv-muted);
  font-size: 0.95rem;
  max-width: 58ch;
}

@media (min-width: 900px) {
  .sv-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    padding-left: 0;
  }
  .sv-timeline::before {
    left: 0;
    right: 0;
    top: 14px;
    bottom: auto;
    width: auto;
    height: 1px;
  }
  .sv-timeline__item {
    padding: 36px 8px 0 0;
  }
  .sv-timeline__dot {
    left: 0;
    top: 7px;
  }
}

/* —— Engineering —— */
.sv-eng-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 28px;
}

.sv-eng {
  border: 1px solid var(--sv-line);
  border-radius: var(--sv-radius);
  background: var(--sv-glass);
  padding: 22px 18px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.sv-eng:hover {
  border-color: var(--sv-line-strong);
  box-shadow: 0 0 28px var(--sv-glow);
}

.sv-eng h3 {
  margin: 0 0 8px;
  font-family: var(--sv-display);
  font-size: 1rem;
}

.sv-eng p {
  margin: 0;
  color: var(--sv-muted);
  font-size: 0.9rem;
}

@media (max-width: 800px) {
  .sv-eng-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .sv-eng-grid {
    grid-template-columns: 1fr;
  }
}

/* —— Why —— */
.sv-why {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 36px;
}

.sv-why__item {
  padding-top: 20px;
  border-top: 1px solid var(--sv-line-strong);
}

.sv-why__item h3 {
  margin: 0 0 10px;
  font-family: var(--sv-display);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
}

.sv-why__item p {
  margin: 0;
  color: var(--sv-muted);
  font-size: 0.92rem;
}

@media (max-width: 800px) {
  .sv-why {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .sv-why {
    grid-template-columns: 1fr;
  }
}

/* —— Founder —— */
.sv-founder {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border: 1px solid var(--sv-line);
  border-radius: calc(var(--sv-radius) + 4px);
  background: linear-gradient(120deg, rgba(14, 165, 233, 0.08), transparent 45%), var(--sv-glass);
  padding: 32px 28px;
}

.sv-founder__identity {
  display: flex;
  align-items: center;
  gap: 18px;
}

.sv-founder__mono {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 1px solid var(--sv-line-strong);
  display: grid;
  place-items: center;
  font-family: var(--sv-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--sv-cyan);
  background: radial-gradient(circle at 30% 30%, rgba(34, 211, 238, 0.2), transparent 70%);
  box-shadow: 0 0 28px var(--sv-glow);
}

.sv-founder__identity h3 {
  margin: 0 0 4px;
  font-family: var(--sv-display);
  font-size: 1.25rem;
}

.sv-founder__identity p {
  margin: 0;
  color: var(--sv-muted);
  font-size: 0.92rem;
}

/* —— Explore next —— */
.sv-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.sv-topic {
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid var(--sv-line);
  background: var(--sv-glass);
  font-size: 0.9rem;
  font-weight: 500;
  color: #d0dce8;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.sv-topic:hover {
  border-color: var(--sv-line-strong);
  box-shadow: 0 0 24px var(--sv-glow);
}

/* —— Vision cinematic —— */
.sv-vision {
  position: relative;
  padding: 120px 22px;
  overflow: hidden;
  text-align: center;
  border-top: 1px solid rgba(148, 163, 184, 0.06);
  border-bottom: 1px solid rgba(148, 163, 184, 0.06);
}

.sv-vision__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 70% at 50% 50%, rgba(14, 165, 233, 0.16), transparent 60%),
    linear-gradient(180deg, #05080e, #04060a);
  pointer-events: none;
}

.sv-vision__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(56, 189, 248, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  animation: sv-grid-drift 40s linear infinite;
  opacity: 0.5;
  pointer-events: none;
}

.sv-vision__inner {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
}

.sv-vision h2 {
  margin: 12px 0 18px;
  font-family: var(--sv-display);
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.sv-vision p {
  margin: 0 auto;
  max-width: 42ch;
  color: var(--sv-muted);
  font-size: 1.1rem;
}

/* —— CTA —— */
.sv-cta {
  border: 1px solid var(--sv-line);
  border-radius: calc(var(--sv-radius) + 6px);
  background:
    radial-gradient(ellipse 80% 80% at 80% 20%, rgba(14, 165, 233, 0.14), transparent 55%),
    var(--sv-glass);
  padding: 48px 36px;
  text-align: center;
}

.sv-cta .sv-h2 {
  margin-left: auto;
  margin-right: auto;
}

.sv-cta .sv-lead {
  margin: 0 auto 28px;
}

.sv-cta .sv-btn-row {
  justify-content: center;
}

/* —— Footer —— */
.sv-footer {
  border-top: 1px solid var(--sv-line);
  padding: 48px 22px 36px;
  background: #020306;
}

.sv-footer__inner {
  max-width: var(--sv-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 28px;
  align-items: start;
}

.sv-footer__name {
  margin: 0 0 8px;
  font-family: var(--sv-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.sv-footer__meta {
  margin: 0;
  color: var(--sv-muted);
  font-size: 0.9rem;
  max-width: 36ch;
}

.sv-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  justify-content: flex-end;
}

.sv-footer__links a {
  color: var(--sv-muted);
  font-size: 0.88rem;
  font-weight: 500;
}

.sv-footer__links a:hover {
  color: var(--sv-cyan);
}

.sv-footer__copy {
  max-width: var(--sv-max);
  margin: 28px auto 0;
  padding-top: 20px;
  border-top: 1px solid var(--sv-line);
  color: var(--sv-dim);
  font-size: 0.8rem;
}

@media (max-width: 700px) {
  .sv-footer__inner {
    grid-template-columns: 1fr;
  }
  .sv-footer__links {
    justify-content: flex-start;
  }
  .sv-cta {
    padding: 36px 20px;
  }
}