/* =========================================================
   Components
   ========================================================= */

/* ---- Hero ---- */
.hero {
  padding-block: clamp(3rem, 8vw, 6rem) clamp(2.5rem, 6vw, 5rem);
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2rem, 5vw, 3rem);
  align-items: center;
}
@media (max-width: 940px) {
  .hero__grid { grid-template-columns: 1fr; }
}
.hero h1 { max-width: 16ch; }
.hero .lede { margin-top: 1.1rem; margin-bottom: 2rem; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 1rem; }

.hero__diagram {
  aspect-ratio: 1 / 1;
  max-width: 480px;
  margin-inline: auto;
}

/* Node-diagram animation (hero) */
.node { fill: var(--teal); }
.node--core { fill: var(--teal-light); }
.node-line {
  stroke: var(--teal);
  stroke-width: 1.4;
  fill: none;
  stroke-dasharray: 6 6;
  opacity: 0.55;
}
.node-pulse {
  fill: none;
  stroke: var(--teal-light);
  stroke-width: 1.5;
  opacity: 0;
}
.diagram-animate .node-pulse {
  animation: pulse-ring 2.6s var(--ease) infinite;
}
.diagram-animate .node-line { animation: dash-flow 30s linear infinite; }
.diagram-animate .node--core { animation: core-glow 2.6s ease-in-out infinite; }

@keyframes pulse-ring {
  0% { r: 6; opacity: 0.9; stroke-width: 2; }
  100% { r: 46; opacity: 0; stroke-width: 0.5; }
}
@keyframes dash-flow {
  to { stroke-dashoffset: -600; }
}
@keyframes core-glow {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.65; }
}

/* ---- Stat row ---- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding-block: clamp(1.75rem, 3vw, 2.5rem);
}
@media (max-width: 760px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
}
.stat__num {
  font-family: var(--font-display);
  font-size: var(--step-3);
  color: var(--teal-deep);
  line-height: 1;
}
.stat__label {
  font-size: var(--step--1);
  color: var(--slate);
  margin-top: 0.4rem;
}

/* ---- Platform preview cards (home) ---- */
.platform-list {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.platform-row {
  background: var(--paper);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.5rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  transition: background 0.18s var(--ease);
}
.platform-row:hover { background: var(--paper-dim); }
.platform-row__icon {
  width: 48px; height: 48px;
  flex: none;
  color: var(--teal-deep);
}
.platform-row__num {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--slate-soft);
}
.platform-row__title { font-family: var(--font-display); font-size: var(--step-1); font-weight: 600; }
.platform-row__desc { color: var(--slate); font-size: var(--step--1); margin-top: 0.3rem; max-width: 60ch; }
.platform-row__arrow { color: var(--teal-deep); flex: none; transition: transform 0.18s var(--ease); }
.platform-row:hover .platform-row__arrow { transform: translateX(4px); }
@media (max-width: 700px) {
  .platform-row { grid-template-columns: auto 1fr; }
  .platform-row__arrow { display: none; }
}

/* ---- Value / principle grid ---- */
.value-grid { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .value-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .value-grid { grid-template-columns: 1fr; } }
.value-card {
  border-top: 2px solid var(--teal);
  padding-top: 1.25rem;
}
.value-card h4 { font-size: var(--step-0); margin-bottom: 0.5rem; }
.value-card p { color: var(--slate); font-size: var(--step--1); }

/* ---- Timeline (about) ---- */
.timeline { position: relative; padding-left: 2rem; border-left: 2px solid var(--line); display: grid; gap: 2.25rem; }
.timeline__item { position: relative; }
.timeline__item::before {
  content: "";
  position: absolute;
  left: -2.05rem;
  top: 0.35rem;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 4px var(--paper);
}
.timeline__year { font-family: var(--font-mono); color: var(--teal-deep); font-size: var(--step--1); }
.timeline__item h4 { margin: 0.35rem 0 0.35rem; font-size: var(--step-0); }
.timeline__item p { color: var(--slate); font-size: var(--step--1); max-width: 62ch; }

/* ---- Products console layout ---- */
.console {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--paper);
  box-shadow: var(--shadow-md);
}
@media (max-width: 900px) {
  .console { grid-template-columns: 1fr; }
}
.console__rail {
  background: var(--paper-dim);
  border-right: 1px solid var(--line);
  padding: 0.75rem;
}
@media (max-width: 900px) {
  .console__rail {
    display: flex;
    overflow-x: auto;
    border-right: none;
    border-bottom: 1px solid var(--line);
    gap: 0.5rem;
  }
}
.console__tab {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.9rem 1rem;
  cursor: pointer;
  font-family: var(--font-body);
  color: var(--slate);
  transition: background 0.15s var(--ease), color 0.15s var(--ease);
}
@media (max-width: 900px) {
  .console__tab { white-space: nowrap; width: auto; }
}
.console__tab:hover { background: rgba(20,166,157,0.08); }
.console__tab[aria-selected="true"] {
  background: var(--ink);
  color: var(--paper);
}
.console__tab-icon { width: 22px; height: 22px; flex: none; }
.console__tab-text strong { display: block; font-size: var(--step--1); font-weight: 600; }
.console__tab-text span { display: block; font-size: 0.78rem; color: var(--slate-soft); }
.console__tab[aria-selected="true"] .console__tab-text span { color: #A9B4C6; }

.console__panel {
  padding: clamp(1.5rem, 4vw, 2.75rem);
}
.console__panel[hidden] { display: none; }
.console__panel-head { display: flex; align-items: flex-start; gap: 1.25rem; margin-bottom: 1.75rem; }
.console__panel-icon {
  width: 52px; height: 52px;
  flex: none;
  color: var(--teal-deep);
}
.console__panel-head p { color: var(--slate); }

.module-grid { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 700px) { .module-grid { grid-template-columns: 1fr; } }
.module {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1.4rem;
  background: var(--paper);
}
.module h5 { font-family: var(--font-body); font-size: var(--step-0); font-weight: 600; margin-bottom: 0.4rem; }
.module p { font-size: var(--step--1); color: var(--slate); }

/* ---- FAQ / AEO answer blocks ---- */
.faq { display: grid; gap: 0; border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.4rem 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step-0);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .plus {
  flex: none;
  width: 24px; height: 24px;
  position: relative;
}
.faq-item summary .plus::before,
.faq-item summary .plus::after {
  content: "";
  position: absolute;
  background: var(--ink);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}
.faq-item summary .plus::before { left: 0; top: 50%; width: 100%; height: 2px; transform: translateY(-50%); }
.faq-item summary .plus::after { top: 0; left: 50%; width: 2px; height: 100%; transform: translateX(-50%); }
.faq-item[open] summary .plus::after { opacity: 0; }
.faq-item .faq-answer { padding-bottom: 1.5rem; color: var(--slate); max-width: 70ch; }

/* ---- Contact ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(2rem, 5vw, 3.5rem);
}
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }

.info-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.6rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--paper);
  transition: box-shadow 0.18s var(--ease), border-color 0.18s var(--ease);
}
.info-card:hover { box-shadow: var(--shadow-sm); border-color: #CBD0C4; }
.info-card svg { width: 26px; height: 26px; flex: none; color: var(--teal-deep); margin-top: 2px; }
.info-card h5 { font-size: var(--step-0); margin-bottom: 0.3rem; }
.info-card p { color: var(--slate); font-size: var(--step--1); }
.info-stack { display: grid; gap: 1rem; }

#contact-form {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  box-shadow: var(--shadow-md);
}

.form-field { display: grid; gap: 0.5rem; margin-bottom: 1.35rem; }
.form-field label { font-size: var(--step--1); font-weight: 600; }
.form-field .req { color: var(--teal-deep); font-weight: 400; }
.form-field input,
.form-field select,
.form-field textarea {
  font-family: var(--font-body);
  font-size: var(--step-0);
  padding: 0.85rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--white);
  color: var(--ink);
  width: 100%;
  transition: border-color 0.15s var(--ease), box-shadow 0.15s var(--ease);
}
.form-field textarea { resize: vertical; min-height: 130px; }
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(20,166,157,0.18);
  outline: none;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
@media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }
.form-error { color: #B4443A; font-size: 0.82rem; min-height: 1.1em; }
.form-field.has-error input,
.form-field.has-error select,
.form-field.has-error textarea { border-color: #B4443A; }

.form-status {
  margin-top: 1.25rem;
  padding: 1rem 1.2rem;
  border-radius: var(--radius-sm);
  font-size: var(--step--1);
  display: none;
}
.form-status.is-success { display: block; background: rgba(20,166,157,0.12); color: var(--teal-deep); }
.form-status.is-error { display: block; background: rgba(180,68,58,0.1); color: #8C332B; }

/* ---- CTA band ---- */
.cta-band {
  border-radius: var(--radius-md);
  background: var(--ink);
  color: var(--paper);
  padding: clamp(2.5rem, 6vw, 4rem);
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-lg);
}
.cta-band h3 { color: var(--paper); margin-bottom: 0.4rem; }
.cta-band p { color: #B7C0D1; margin: 0; max-width: 46ch; }

/* ---- misc ---- */
.two-col { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 800px) { .two-col { grid-template-columns: 1fr; } }
.mt-lg { margin-top: clamp(2rem, 5vw, 3rem); }