:root {
  --idea-green: #10b981;
  --idea-green-dark: #047857;
  --idea-ink: #111827;
  --idea-yellow: #fbbf24;
}

.ideas-page {
  min-height: 100vh;
  padding-top: var(--nav-h);
}

.ideas-nav-back {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--text2);
  font-size: 13px;
  font-weight: 600;
}

.ideas-nav-back:hover { color: var(--purple); }

.ideas-hero {
  position: relative;
  overflow: hidden;
  padding: 96px 0 74px;
  background:
    radial-gradient(circle at 15% 10%, rgba(16,185,129,.14), transparent 30%),
    radial-gradient(circle at 85% 15%, rgba(108,71,255,.13), transparent 32%),
    var(--bg2);
}

.ideas-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  opacity: .35;
  pointer-events: none;
  background-image: radial-gradient(circle, var(--border) 1px, transparent 1px);
  background-size: 28px 28px;
}

.ideas-hero .container { position: relative; z-index: 1; }
.ideas-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 18px;
  padding: 7px 11px;
  border: 1px solid rgba(16,185,129,.3);
  border-radius: 999px;
  color: var(--idea-green-dark);
  background: rgba(16,185,129,.09);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

html.dark .ideas-eyebrow { color: #6ee7b7; }

.ideas-hero h1 {
  max-width: 900px;
  margin-bottom: 20px;
  font-size: clamp(42px, 7vw, 78px);
  letter-spacing: -.055em;
}

.ideas-hero > .container > p,
.ideas-hero-copy {
  max-width: 720px;
  color: var(--text2);
  font-size: clamp(17px, 2vw, 21px);
}

.ideas-list { padding: 70px 0 100px; }

.idea-list-card {
  display: grid;
  grid-template-columns: 180px minmax(0,1fr) auto;
  gap: 30px;
  align-items: center;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: var(--surface);
  box-shadow: var(--card-shadow);
  transition: transform .2s ease, border-color .2s ease;
}

.idea-list-card:hover { transform: translateY(-3px); border-color: rgba(108,71,255,.35); }
.idea-list-card + .idea-list-card { margin-top: 24px; }

.rail-diagram { margin: 0 0 48px; }
.rail-diagram svg { display: block; width: 100%; height: auto; }
.rail-diagram figcaption { margin-top: 10px; color: var(--text2); font-size: 12px; }
.rail-calculator { padding: 24px; border: 1px solid var(--border); border-radius: 20px; background: var(--surface); }
.rail-inputs { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; }
.rail-inputs label { display: grid; gap: 8px; color: var(--text2); font-size: 13px; font-weight: 600; }
.rail-inputs input { width: 100%; min-width: 0; padding: 12px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text); font: inherit; }
.rail-inputs input:focus-visible { outline: 2px solid var(--purple); outline-offset: 2px; }
#rail-result { display: block; margin-top: 20px; padding: 16px; border-radius: 10px; background: var(--purple-light); color: var(--text); font-weight: 600; }
@media(max-width: 480px) { .rail-inputs { grid-template-columns: 1fr; } .rail-calculator { padding: 18px; } }

.idea-number {
  color: var(--purple);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.idea-list-icon {
  display: grid;
  place-items: center;
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: 16px;
  color: #fff;
  background: linear-gradient(135deg,var(--idea-green),var(--purple));
  font-size: 50px;
}

.idea-list-copy h2 { margin: 5px 0 8px; }
.idea-list-copy p { max-width: 680px; color: var(--text2); }
.idea-list-link { color: var(--purple); font-size: 24px; }

/* Article */
.idea-article-hero {
  position: relative;
  overflow: hidden;
  padding: 82px 0 62px;
  background:
    radial-gradient(circle at 15% 20%, rgba(16,185,129,.15), transparent 30%),
    radial-gradient(circle at 85% 15%, rgba(108,71,255,.15), transparent 33%),
    var(--bg2);
}

.article-topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-bottom: 28px;
}

.language-switch {
  display: inline-flex;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
}

.language-switch button {
  padding: 7px 12px;
  border-radius: 999px;
  color: var(--text2);
  background: transparent;
  font-size: 12px;
  font-weight: 800;
}

.language-switch button.active { color: #fff; background: var(--purple); }

.idea-article-hero h1 {
  max-width: 930px;
  margin: 14px 0 18px;
  font-size: clamp(38px, 6vw, 70px);
  letter-spacing: -.055em;
}

.article-deck {
  max-width: 800px;
  color: var(--text2);
  font-size: clamp(18px, 2.3vw, 23px);
  line-height: 1.55;
}

.article-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.article-facts span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 11px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text2);
  background: var(--bg);
  font-size: 12px;
  font-weight: 700;
}

.article-shell {
  display: grid;
  grid-template-columns: minmax(0, 760px) 250px;
  gap: 70px;
  align-items: start;
  padding-top: 64px;
  padding-bottom: 110px;
}

.article-body { min-width: 0; }
.article-body section { margin-bottom: 64px; scroll-margin-top: 90px; }
.article-body h2 { margin-bottom: 18px; font-size: clamp(27px,4vw,38px); letter-spacing: -.025em; }
.article-body h3 { margin: 30px 0 12px; }
.article-body p { margin-bottom: 18px; color: var(--text2); font-size: 17px; line-height: 1.85; }
.article-body strong { color: var(--text); }
.article-body a { color: var(--purple); text-decoration: underline; text-underline-offset: 3px; }

.article-body ul,
.article-body ol {
  display: grid;
  gap: 12px;
  margin: 18px 0 24px 22px;
  color: var(--text2);
}
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { padding-left: 5px; line-height: 1.7; }

.article-sidebar {
  position: sticky;
  top: 92px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
}

.article-sidebar strong {
  display: block;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.article-sidebar a {
  display: block;
  padding: 6px 0;
  color: var(--text2);
  font-size: 13px;
}
.article-sidebar a:hover { color: var(--purple); }

.concept-diagram {
  position: relative;
  min-height: 320px;
  margin: 34px 0 48px;
  border-radius: 22px;
  overflow: hidden;
  background: #111827;
  color: #fff;
}

.concept-road {
  position: absolute;
  inset: 50% 0 auto;
  border-top: 4px dashed rgba(255,255,255,.22);
}

.concept-vehicle {
  position: absolute;
  top: 50%;
  width: 150px;
  padding: 22px 12px 16px;
  transform: translateY(-50%);
  border-radius: 28px 40px 18px 18px;
  text-align: center;
  box-shadow: 0 20px 35px rgba(0,0,0,.35);
}
.concept-vehicle i { display: block; font-size: 52px; }
.concept-vehicle b { font-size: 10px; letter-spacing: .12em; }
.concept-donor { left: 7%; background: linear-gradient(135deg,var(--idea-green),var(--idea-green-dark)); }
.concept-receiver { right: 7%; background: linear-gradient(135deg,var(--purple),#4a2fcc); }
.concept-cable {
  position: absolute;
  top: 50%; left: calc(7% + 150px); right: calc(7% + 150px);
  height: 4px;
  transform: translateY(-50%);
  background: linear-gradient(90deg,var(--idea-green),var(--idea-yellow),var(--purple));
  box-shadow: 0 0 20px rgba(251,191,36,.7);
}
.concept-cable::after {
  content: '⚡';
  position: absolute;
  left: 50%; top: 50%;
  padding: 8px;
  transform: translate(-50%,-50%);
  border-radius: 50%;
  background: #111827;
  font-size: 22px;
}
.concept-caption {
  position: absolute;
  left: 50%; bottom: 32px;
  transform: translateX(-50%);
  width: 90%;
  color: rgba(255,255,255,.7);
  text-align: center;
  font-size: 12px;
}

.verdict-box,
.calculation-box,
.note-box {
  margin: 26px 0;
  padding: 24px;
  border-radius: 16px;
}
.verdict-box { border: 1px solid rgba(16,185,129,.3); background: rgba(16,185,129,.08); }
.calculation-box { border: 1px solid rgba(108,71,255,.25); background: rgba(108,71,255,.07); }
.note-box { border-left: 4px solid var(--idea-yellow); background: rgba(251,191,36,.08); }
.verdict-box p:last-child,.calculation-box p:last-child,.note-box p:last-child { margin-bottom: 0; }

.power-table,
.feasibility-table {
  width: 100%;
  margin: 26px 0;
  border-collapse: collapse;
  font-size: 14px;
}
.power-table th,.power-table td,.feasibility-table th,.feasibility-table td {
  padding: 13px 14px;
  border: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}
.power-table th,.feasibility-table th { color: var(--text); background: var(--surface); }
.power-table td,.feasibility-table td { color: var(--text2); }

.rating {
  display: inline-flex;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
}
.rating-high { color:#047857; background:rgba(16,185,129,.13); }
.rating-mid { color:#b45309; background:rgba(245,158,11,.14); }
.rating-low { color:#b91c1c; background:rgba(239,68,68,.12); }

.roadmap {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}
.roadmap-step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
}
.roadmap-step span {
  display: grid;
  place-items: center;
  width: 42px; height: 42px;
  border-radius: 12px;
  color: #fff;
  background: var(--purple);
  font-weight: 800;
}
.roadmap-step h3 { margin: 1px 0 5px; font-size: 17px; }
.roadmap-step p { margin: 0; font-size: 14px; line-height: 1.6; }

.sources-list { counter-reset: sources; list-style: none !important; margin-left: 0 !important; }
.sources-list li {
  position: relative;
  padding: 14px 14px 14px 48px;
  border-bottom: 1px solid var(--border);
}
.sources-list li::before {
  counter-increment: sources;
  content: counter(sources);
  position: absolute;
  left: 8px; top: 13px;
  display: grid;
  place-items: center;
  width: 26px; height: 26px;
  border-radius: 8px;
  color: var(--purple);
  background: var(--purple-light);
  font-size: 12px;
  font-weight: 800;
}

[data-lang-content][hidden] { display: none !important; }

@media (max-width: 900px) {
  .article-shell { grid-template-columns: 1fr; gap: 0; }
  .article-sidebar { display: none; }
  .idea-list-card { grid-template-columns: 130px minmax(0,1fr) auto; }
}

@media (max-width: 640px) {
  .ideas-hero,.idea-article-hero { padding: 60px 0 48px; }
  .article-topline { align-items: flex-start; flex-direction: column; }
  .article-shell { padding-top: 44px; padding-bottom: 70px; }
  .idea-list-card { grid-template-columns: 1fr; gap: 18px; }
  .idea-list-icon { aspect-ratio: 16/7; }
  .idea-list-link { display: none; }
  .concept-diagram { min-height: 260px; }
  .concept-vehicle { width: 100px; padding: 16px 8px 12px; }
  .concept-vehicle i { font-size: 38px; }
  .concept-donor { left: 4%; }
  .concept-receiver { right: 4%; }
  .concept-cable { left: calc(4% + 100px); right: calc(4% + 100px); }
  .power-table,.feasibility-table { display: block; overflow-x: auto; }
}