/* =====================================================================
   Content sections: who / services / benefits / flow / contacts
   ===================================================================== */

/* shared thin top rule for sections that need separation */
.who,
.flow,
.contacts {
  border-top: 1px solid var(--line-faint);
}

/* ---------------------------------------------------------------------
   01 · WHO WE ARE
   --------------------------------------------------------------------- */
.who__grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  grid-template-areas:
    "lead    visual"
    "cols    visual";
  gap: clamp(2rem, 1rem + 4vw, 5rem) clamp(2rem, 1rem + 4vw, 4rem);
  align-items: start;
}
.who__lead {
  grid-area: lead;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.6rem, 1.1rem + 2vw, 2.9rem);
  line-height: 1.18;
  letter-spacing: var(--tracking-tight);
}
.who__cols {
  grid-area: cols;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 1rem + 2vw, 3rem);
  color: var(--text-muted);
}
.who__visual {
  grid-area: visual;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  align-self: stretch;
  justify-content: center;
}

/* Orbit graphic */
.orbit {
  position: relative;
  width: min(100%, 340px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
}
.orbit__ring {
  position: absolute;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  inset: 0;
}
.orbit__ring--1 { inset: 0; border-color: var(--signal-tint-22); }
.orbit__ring--2 { inset: 16%; border-style: dashed; }
.orbit__ring--3 { inset: 32%; border-color: var(--spark-tint-14); }
.orbit__core {
  width: 22%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--gradient-signal);
  box-shadow: 0 0 40px -4px var(--signal);
  animation: corePulse 3.6s var(--ease-out-expo) infinite;
}
@keyframes corePulse {
  0%, 100% { transform: scale(1); filter: brightness(1); }
  50% { transform: scale(1.08); filter: brightness(1.2); }
}
.orbit__dot {
  position: absolute;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--signal-bright);
  box-shadow: 0 0 14px var(--signal);
  top: 50%;
  left: 50%;
  margin: -5.5px;
}
.orbit__dot--a { animation: orbit 7s linear infinite; }
.orbit__dot--b {
  background: var(--spark);
  box-shadow: 0 0 14px var(--spark);
  animation: orbit 11s linear infinite reverse;
  --r: 33%;
}
.orbit__dot--c { animation: orbit 16s linear infinite; --r: 50%; }
@keyframes orbit {
  to { transform: rotate(360deg) translateX(var(--r, 50%)) rotate(-360deg); }
}
.orbit__dot--a { --r: 50%; }

.who__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}
.who__tags span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
}

@media (max-width: 860px) {
  .who__grid {
    grid-template-columns: 1fr;
    grid-template-areas:
      "lead"
      "cols"
      "visual";
  }
  .orbit { width: min(100%, 280px); }
}
@media (max-width: 540px) {
  .who__cols { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .orbit__core,
  .orbit__dot { animation: none; }
  .orbit__dot { display: none; }
}

/* ---------------------------------------------------------------------
   02 · SERVICES
   --------------------------------------------------------------------- */
.services {
  background:
    linear-gradient(180deg, transparent, var(--ink-850) 12%, var(--ink-850) 88%, transparent);
}
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 0.5rem + 1.5vw, 1.6rem);
}
.svc-card {
  position: relative;
  padding: clamp(1.6rem, 1rem + 1.5vw, 2.4rem);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    linear-gradient(180deg, oklch(100% 0 0 / 0.035), oklch(100% 0 0 / 0.008));
  box-shadow: var(--shadow-card);
  overflow: hidden;
  isolation: isolate;
  transition: transform var(--dur) var(--ease-out-expo),
    border-color var(--dur) var(--ease-out-expo);
  transform-style: preserve-3d;
}
.svc-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(
    120% 100% at var(--mx, 50%) var(--my, 0%),
    var(--signal-tint-08),
    transparent 55%
  );
  opacity: 0;
  transition: opacity var(--dur) var(--ease-out-expo);
}
.svc-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
}
.svc-card:hover::before {
  opacity: 1;
}
/* engineered corner bracket */
.svc-card__corner {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 18px;
  height: 18px;
  border-top: 1.5px solid var(--line-strong);
  border-right: 1.5px solid var(--line-strong);
  transition: border-color var(--dur) var(--ease-out-expo);
}
.svc-card:hover .svc-card__corner {
  border-color: var(--signal-bright);
}
.svc-card__idx {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--text-faint);
}
.svc-card__icon {
  margin: 1.4rem 0 1.6rem;
  color: var(--signal-bright);
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  border-radius: var(--r);
  background: var(--signal-tint-08);
  border: 1px solid var(--signal-tint-14);
  transition: transform var(--dur) var(--ease-spring);
}
.svc-card:hover .svc-card__icon {
  transform: translateY(-3px) rotate(-4deg);
}
.svc-card__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-h3);
  letter-spacing: var(--tracking-tight);
  margin-bottom: 0.8rem;
}
.svc-card__text {
  color: var(--text-muted);
  font-size: 0.98rem;
}
.svc-card__line {
  display: block;
  margin-top: 1.6rem;
  height: 2px;
  width: 36px;
  background: var(--gradient-signal);
  border-radius: 2px;
  transition: width var(--dur-slow) var(--ease-out-expo);
}
.svc-card:hover .svc-card__line {
  width: 100%;
}

@media (max-width: 880px) {
  .services__grid { grid-template-columns: 1fr; }
}

/* ---------------------------------------------------------------------
   03 · BENEFITS
   --------------------------------------------------------------------- */
.benefits__inner {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(2rem, 1rem + 5vw, 6rem);
  align-items: start;
}
.benefits__sticky {
  position: sticky;
  top: 120px;
}
.benefits__panel {
  position: relative;
  margin-top: 2.5rem;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(80% 80% at 70% 20%, var(--signal-tint-08), transparent 60%),
    var(--ink-800);
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: 1.6rem;
  box-shadow: var(--shadow-card);
}
.benefits__panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-faint) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-faint) 1px, transparent 1px);
  background-size: 32px 32px;
  -webkit-mask-image: radial-gradient(70% 70% at 30% 70%, #000, transparent);
  mask-image: radial-gradient(70% 70% at 30% 70%, #000, transparent);
}
.panel-readout {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}
.panel-readout__row b {
  color: var(--signal-bright);
  font-weight: 400;
  display: inline-block;
  width: 4.5rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.68rem;
}
.panel-pulse {
  position: absolute;
  top: 18%;
  right: 16%;
  width: 84px;
  height: 84px;
  border-radius: 50%;
  background: var(--gradient-signal);
  filter: blur(2px);
  box-shadow: 0 0 60px -8px var(--signal);
  animation: corePulse 4s var(--ease-out-expo) infinite;
}
@media (prefers-reduced-motion: reduce) {
  .panel-pulse { animation: none; }
}

.benefits__list {
  list-style: none;
  padding: 0;
  counter-reset: none;
}
.benefit {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.4rem;
  padding: clamp(1.6rem, 1rem + 2vw, 2.6rem) 0;
  border-bottom: 1px solid var(--line);
}
.benefit:first-child { padding-top: 0; }
.benefit__num {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--signal-bright);
  padding-top: 0.45rem;
  position: relative;
}
.benefit__body h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-h3);
  letter-spacing: var(--tracking-tight);
  margin-bottom: 0.7rem;
  transition: color var(--dur) var(--ease-out-expo);
}
.benefit:hover .benefit__body h3 {
  color: var(--signal-bright);
}
.benefit__body p {
  color: var(--text-muted);
  max-width: 38rem;
}

@media (max-width: 860px) {
  .benefits__inner { grid-template-columns: 1fr; }
  .benefits__sticky { position: static; }
  .benefits__panel { display: none; }
}

/* ---------------------------------------------------------------------
   04 · WORKING FLOW
   --------------------------------------------------------------------- */
.flow__track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 0.5rem + 3vw, 4rem);
  padding-top: 2rem;
}
.flow__progress {
  position: absolute;
  top: calc(2rem + 23px);
  left: 0;
  right: 0;
  height: 2px;
  background: var(--line);
}
.flow__progress-bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(var(--p, 0));
  transform-origin: 0 50%;
  background: var(--gradient-signal);
  box-shadow: 0 0 14px var(--signal-tint-22);
  transition: transform 120ms linear;
}
.flow-step {
  position: relative;
}
.flow-step__node {
  position: relative;
  z-index: 1;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--ink-850);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--signal-bright);
  margin-bottom: 1.6rem;
  transition: border-color var(--dur) var(--ease-out-expo),
    box-shadow var(--dur) var(--ease-out-expo),
    transform var(--dur) var(--ease-spring);
}
.flow-step.in .flow-step__node {
  border-color: var(--signal);
  box-shadow: 0 0 0 5px var(--signal-tint-08), 0 0 24px -4px var(--signal);
}
.flow-step:hover .flow-step__node {
  transform: scale(1.08);
}
.flow-step__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-h3);
  letter-spacing: var(--tracking-tight);
  margin-bottom: 0.8rem;
}
.flow-step__text {
  color: var(--text-muted);
  font-size: 0.98rem;
}

@media (max-width: 760px) {
  .flow__track { grid-template-columns: 1fr; gap: 0; }
  .flow__progress {
    top: 2rem;
    left: 22px;
    right: auto;
    width: 2px;
    height: calc(100% - 4rem);
  }
  .flow__progress-bar {
    transform: scaleY(var(--p, 0));
    transform-origin: 50% 0;
  }
  .flow-step { padding: 0 0 2.5rem 0; padding-left: 4rem; }
  .flow-step__node { position: absolute; left: 0; top: 0; margin: 0; }
}

/* ---------------------------------------------------------------------
   05 · CONTACTS
   --------------------------------------------------------------------- */
.contacts__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 1rem + 5vw, 6rem);
  align-items: start;
}
.contacts__list {
  list-style: none;
  padding: 0;
  margin: 2.5rem 0 0;
  display: flex;
  flex-direction: column;
}
.contacts__list li {
  display: grid;
  grid-template-columns: 6rem 1fr;
  align-items: baseline;
  gap: 1rem;
  padding: 1.3rem 0;
  border-top: 1px solid var(--line);
}
.contacts__k {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.contacts__list a,
.contacts__list address {
  font-size: clamp(1.05rem, 0.9rem + 0.6vw, 1.35rem);
  color: var(--text);
  transition: color var(--dur) var(--ease-out-expo);
}
.contacts__list a:hover {
  color: var(--signal-bright);
}

/* schematic geo block */
.geo {
  position: relative;
  margin-top: 2.5rem;
  height: 180px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-800);
}
.geo__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-faint) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-faint) 1px, transparent 1px);
  background-size: 26px 26px;
}
.geo__pin {
  position: absolute;
  top: 46%;
  left: 40%;
  width: 14px;
  height: 14px;
}
.geo__pin span {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--spark);
  box-shadow: 0 0 16px var(--spark);
}
.geo__pin::after {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 1px solid var(--spark);
  animation: ripple 2.6s var(--ease-out-expo) infinite;
}
@keyframes ripple {
  0% { transform: scale(0.5); opacity: 0.9; }
  100% { transform: scale(2.6); opacity: 0; }
}
.geo__coord {
  position: absolute;
  bottom: 0.9rem;
  left: 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}
@media (prefers-reduced-motion: reduce) {
  .geo__pin::after { animation: none; }
}

/* contact form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
  padding: clamp(1.6rem, 1rem + 2vw, 2.6rem);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    linear-gradient(180deg, oklch(100% 0 0 / 0.035), oklch(100% 0 0 / 0.008));
  box-shadow: var(--shadow-card);
}
.field {
  position: relative;
}
.field input,
.field textarea {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line-strong);
  padding: 1.4rem 0 0.7rem;
  resize: vertical;
  transition: border-color var(--dur) var(--ease-out-expo);
}
.field input:focus,
.field textarea:focus {
  outline: none;
}
.field label {
  position: absolute;
  left: 0;
  top: 1.4rem;
  color: var(--text-faint);
  pointer-events: none;
  transition: transform var(--dur) var(--ease-out-expo),
    color var(--dur) var(--ease-out-expo);
  transform-origin: 0 0;
}
.field input:focus + label,
.field input:not(:placeholder-shown) + label,
.field textarea:focus + label,
.field textarea:not(:placeholder-shown) + label {
  transform: translateY(-1.5rem) scale(0.78);
  color: var(--signal-bright);
}
.field__line {
  position: absolute;
  left: 0;
  bottom: 0;
  height: 1px;
  width: 100%;
  background: var(--gradient-signal);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform var(--dur) var(--ease-out-expo);
}
.field input:focus ~ .field__line,
.field textarea:focus ~ .field__line {
  transform: scaleX(1);
}
.contact-form__submit {
  align-self: flex-start;
}
.contact-form__note {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--signal-bright);
  min-height: 1.2em;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--dur), transform var(--dur) var(--ease-out-expo);
}
.contact-form__note.show {
  opacity: 1;
  transform: none;
}

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