/* ===========================
   Envirome Network — Styles
   =========================== */

:root {
  --color-primary: #2ECC71;
  --color-primary-dark: #27AE60;
  --color-dark: #E8ECF0;
  --color-accent-blue: #5DADE2;
  --color-cta: #E8A838;
  --color-cta-hover: #D4952E;
  --color-bg: #1A1D23;
  --color-bg-alt: #22262E;
  --color-bg-card: #272B33;
  --color-white: #2A2E36;
  --color-tint: #1E2229;
  --color-text: #B0B8C4;
  --color-text-light: #8891A0;
  --color-border: #333842;
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --max-width: 1140px;
  --nav-height: 64px;
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { max-width: 100%; display: block; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); }
ul { list-style: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===========================
   Navigation
   =========================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(26, 29, 35, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 2px;
  color: var(--color-dark);
  text-decoration: none;
}

.nav__logo:hover { color: var(--color-dark); }
.nav__icon { color: var(--color-primary); flex-shrink: 0; }

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  transition: color 0.2s;
}

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

.nav__cta {
  background: var(--color-cta);
  color: var(--color-dark) !important;
  padding: 8px 20px;
  border-radius: 6px;
  font-weight: 600 !important;
  transition: background 0.2s !important;
}

.nav__cta:hover { background: var(--color-cta-hover) !important; }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* ===========================
   Section Titles
   =========================== */

.section-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--color-dark);
  text-align: center;
  margin-bottom: 16px;
  line-height: 1.2;
}

.section-subtitle {
  font-size: 18px;
  color: var(--color-text-light);
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
  line-height: 1.6;
}

/* ===========================
   Hero
   =========================== */

.hero {
  padding: 120px 0 80px;
  background: var(--color-bg);
  overflow: hidden;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero__eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.hero__title {
  font-size: 56px;
  font-weight: 800;
  color: var(--color-dark);
  line-height: 1.1;
  margin-bottom: 20px;
}

.hero__subtitle {
  font-size: 19px;
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 500px;
}

.hero__note {
  font-size: 13px;
  color: var(--color-text-light);
  margin-top: 12px;
}

.hero__visual {
  display: flex;
  justify-content: center;
}

.hero__illustration {
  width: 100%;
  max-width: 420px;
}

/* ===========================
   Waitlist Form
   =========================== */

.waitlist-form {
  display: flex;
  gap: 8px;
  max-width: 440px;
}

.waitlist-form input[type="email"] {
  flex: 1;
  min-width: 0;
  padding: 14px 18px;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  font-family: var(--font-main);
  font-size: 16px;
  background: var(--color-bg-card);
  color: var(--color-dark);
  outline: none;
  transition: border-color 0.2s;
  -webkit-appearance: none;
}

.waitlist-form input[type="email"]:focus {
  border-color: var(--color-primary);
}

.waitlist-form button {
  padding: 14px 28px;
  background: var(--color-cta);
  color: #1A1D23;
  border: none;
  border-radius: 8px;
  font-family: var(--font-main);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s, transform 0.1s;
}

.waitlist-form button:hover {
  background: var(--color-cta-hover);
}

.waitlist-form button:active {
  transform: scale(0.98);
}

.waitlist-form--dark input[type="email"] {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.2);
  color: var(--color-white);
}

.waitlist-form--dark input[type="email"]::placeholder {
  color: rgba(255,255,255,0.5);
}

.waitlist-form--dark input[type="email"]:focus {
  border-color: var(--color-cta);
}

.waitlist-form__success {
  display: none;
  padding: 14px 18px;
  background: rgba(46, 204, 113, 0.1);
  border: 2px solid var(--color-primary);
  border-radius: 8px;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 15px;
  max-width: 440px;
}

.waitlist-form__success--visible {
  display: block;
}

.cta-bottom .waitlist-form__success {
  background: rgba(255,255,255,0.1);
  border-color: var(--color-cta);
  color: var(--color-cta);
}

/* ===========================
   Problem Section
   =========================== */

.problem {
  padding: 96px 0;
  background: var(--color-tint);
}

.problem__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--color-bg-card);
  border-radius: 12px;
  padding: 32px;
  border: 1px solid var(--color-border);
}

.card__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 16px;
}

.card__title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.card__text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
}

/* ===========================
   How It Works
   =========================== */

.how-it-works {
  padding: 96px 0;
  background: var(--color-bg-alt);
}

.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
}

.step {
  text-align: center;
  max-width: 260px;
  padding: 0 20px;
}

.step__icon {
  display: flex;
  justify-content: center;
  margin-bottom: 16px;
}

.step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 12px;
}

.step__title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.step__text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
}

.step__connector {
  display: flex;
  align-items: center;
  padding-top: 36px;
  flex-shrink: 0;
}

/* ===========================
   Sensors
   =========================== */

.sensors {
  padding: 96px 0;
  background: var(--color-bg);
}

.sensors__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.sensor-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.sensor-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(46, 204, 113, 0.1);
}

.sensor-card__icon {
  margin-bottom: 12px;
}

.sensor-card h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 4px;
}

.sensor-card p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.5;
}

.sensors__expansion {
  text-align: center;
  font-size: 15px;
  color: var(--color-text-light);
  font-style: italic;
}

/* ===========================
   Pricing
   =========================== */

.pricing {
  padding: 96px 0;
  background: var(--color-bg-alt);
}

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

.pricing-card {
  background: var(--color-bg-card);
  border: 2px solid var(--color-border);
  border-radius: 16px;
  padding: 36px 28px;
  text-align: center;
  position: relative;
  transition: border-color 0.2s;
}

.pricing-card:hover {
  border-color: var(--color-primary);
}

.pricing-card--featured {
  border-color: var(--color-primary);
  background: #2F3440;
  box-shadow: 0 8px 32px rgba(46, 204, 113, 0.1);
  transform: scale(1.04);
}

.pricing-card__badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
  letter-spacing: 0.5px;
}

.pricing-card__header h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.pricing-card__price {
  font-family: var(--font-mono);
  font-size: 48px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 24px;
  line-height: 1;
}

.pricing-card__currency {
  font-size: 24px;
  vertical-align: top;
  position: relative;
  top: 8px;
  color: var(--color-text-light);
}

.pricing-card__features {
  text-align: left;
  margin-bottom: 28px;
}

.pricing-card__features li {
  padding: 6px 0;
  font-size: 14px;
  color: var(--color-text);
  position: relative;
  padding-left: 24px;
}

.pricing-card__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 14px;
  height: 7px;
  border-left: 2px solid var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  transform: rotate(-45deg);
}

.pricing-card__btn {
  display: inline-block;
  padding: 12px 28px;
  border: 2px solid var(--color-primary);
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  color: var(--color-primary);
  transition: background 0.2s, color 0.2s;
}

.pricing-card__btn:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.pricing-card__btn--featured {
  background: var(--color-cta);
  border-color: var(--color-cta);
  color: var(--color-dark);
}

.pricing-card__btn--featured:hover {
  background: var(--color-cta-hover);
  border-color: var(--color-cta-hover);
  color: var(--color-dark);
}

.pricing-card--custom {
  border-style: dashed;
}

.pricing-card__price--small {
  font-size: 32px;
}

/* ===========================
   Comparison Table
   =========================== */

.comparison {
  padding: 96px 0;
  background: var(--color-bg);
}

.comparison__table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
}

.comparison__table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 640px;
}

.comparison__table th,
.comparison__table td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.comparison__table th {
  font-weight: 700;
  color: var(--color-dark);
  background: #1E2229;
  font-size: 13px;
  letter-spacing: 0.3px;
}

.comparison__table tbody tr:last-child td {
  border-bottom: none;
}

.comparison__table td {
  color: var(--color-text);
}

.comparison__highlight {
  background: rgba(46, 204, 113, 0.06) !important;
}

.comparison__table td.comparison__highlight {
  color: var(--color-primary);
  font-weight: 600;
}

/* ===========================
   Data Buyers
   =========================== */

.buyers {
  padding: 96px 0;
  background: var(--color-bg-alt);
}

.buyers__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.buyer-card {
  padding: 28px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  transition: border-color 0.2s;
}

.buyer-card:hover {
  border-color: var(--color-primary);
}

.buyer-card__icon {
  margin-bottom: 16px;
}

.buyer-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 6px;
}

.buyer-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.5;
}

/* ===========================
   Operator Economics
   =========================== */

.economics {
  padding: 96px 0;
  background: var(--color-tint);
}

.economics__inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 64px;
  align-items: center;
}

.economics__stat {
  text-align: center;
}

.economics__number {
  display: block;
  font-family: var(--font-mono);
  font-size: 80px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 8px;
}

.economics__label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-light);
  letter-spacing: 0.5px;
}

.economics__details h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-dark);
  margin-bottom: 16px;
  line-height: 1.2;
}

.economics__details p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 20px;
}

.economics__list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
  font-size: 15px;
  color: var(--color-text);
}

.economics__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
}

/* ===========================
   Roadmap
   =========================== */

.roadmap {
  padding: 96px 0;
  background: var(--color-bg-alt);
}

.roadmap__timeline {
  display: flex;
  gap: 0;
  position: relative;
  padding-top: 24px;
}

.roadmap__timeline::before {
  content: '';
  position: absolute;
  top: 30px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-border);
  border-radius: 2px;
}

.roadmap__item {
  flex: 1;
  text-align: center;
  position: relative;
  padding: 0 12px;
}

.roadmap__dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  border: 3px solid var(--color-border);
  margin: 0 auto 20px;
  position: relative;
  z-index: 1;
  transition: border-color 0.3s, background 0.3s;
}

.roadmap__item--active .roadmap__dot {
  border-color: var(--color-primary);
  background: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(27, 138, 90, 0.2);
}

.roadmap__item h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 6px;
}

.roadmap__item p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.5;
}

/* ===========================
   Bottom CTA
   =========================== */

.cta-bottom {
  padding: 96px 0;
  background: #111318;
  text-align: center;
}

.cta-bottom h2 {
  font-size: 36px;
  font-weight: 800;
  color: #E8ECF0;
  margin-bottom: 12px;
}

.cta-bottom p {
  font-size: 18px;
  color: rgba(255,255,255,0.65);
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-bottom .waitlist-form {
  justify-content: center;
  margin: 0 auto;
}

/* ===========================
   Footer
   =========================== */

.footer {
  padding: 40px 0;
  background: #111318;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer .nav__logo {
  color: #E8ECF0;
  font-size: 16px;
  letter-spacing: 2px;
}

.footer .nav__logo:hover { color: #E8ECF0; }
.footer .nav__icon { color: rgba(255,255,255,0.5); }

.footer__tagline {
  font-size: 13px;
  color: rgba(255,255,255,0.35);
  margin-top: 4px;
}

.footer__links {
  display: flex;
  gap: 20px;
}

.footer__links a {
  color: rgba(255,255,255,0.5);
  transition: color 0.2s;
}

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

.footer__copy {
  width: 100%;
  text-align: center;
  font-size: 12px;
  color: rgba(255,255,255,0.25);
  margin-top: 16px;
}

/* ===========================
   Network Page
   =========================== */

.network-hero {
  text-align: center;
  padding: 140px 0 80px;
}

.network-hero__content {
  max-width: 720px;
  margin: 0 auto;
}

.network-hero .hero__subtitle {
  max-width: 640px;
  margin: 0 auto;
}

.network-section {
  padding: 96px 0;
  background: var(--color-bg);
}

.network-section--alt {
  background: var(--color-bg-alt);
}

/* Network Flow */

.network-flow {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
}

.network-flow__step {
  flex: 1;
  max-width: 240px;
  padding: 0 16px;
}

.network-flow__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #1A1D23;
  font-weight: 800;
  font-size: 15px;
  margin-bottom: 14px;
}

.network-flow__step h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.network-flow__step p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text);
}

.network-flow__arrow {
  display: flex;
  align-items: center;
  padding-top: 8px;
  flex-shrink: 0;
  color: var(--color-text-light);
}

/* Token Grid */

.token-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.token-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 32px;
}

.token-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 4px;
}

.token-card__subtitle {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.5px;
  margin-bottom: 14px;
}

.token-card p:last-child {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
}

/* Network Detail */

.network-detail {
  max-width: 720px;
  margin: 48px auto 0;
}

.network-detail h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 14px;
}

.network-detail p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 14px;
}

.network-detail__list {
  margin: 16px 0;
  padding: 0;
}

.network-detail__list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 12px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
}

.network-detail__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
}

/* Environment Cards */

.env-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.env-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 32px;
}

.env-card__stat {
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 4px;
}

.env-card__label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.env-card p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text);
}

/* Earnings Table */

.earnings-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  margin-bottom: 40px;
}

.earnings-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 700px;
}

.earnings-table th,
.earnings-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.earnings-table th {
  font-weight: 700;
  color: var(--color-dark);
  background: #1E2229;
  font-size: 13px;
  letter-spacing: 0.3px;
}

.earnings-table tbody tr:last-child td {
  border-bottom: none;
}

.earnings-table td {
  color: var(--color-text);
}

.earnings-table td:first-child {
  color: var(--color-dark);
}

.earnings-table__sub {
  font-size: 12px;
  color: var(--color-text-light);
}

.earnings-table__featured {
  background: rgba(46, 204, 113, 0.06);
}

.earnings-table__featured td:first-child {
  color: var(--color-primary);
}

.earnings-notes {
  max-width: 720px;
  margin: 0 auto 48px;
}

.earnings-notes h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 14px;
}

/* Payback Cards */

.earnings-payback {
  margin-top: 48px;
}

.earnings-payback h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-dark);
  text-align: center;
  margin-bottom: 28px;
}

.payback-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.payback-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 28px;
  text-align: center;
}

.payback-card--featured {
  border-color: var(--color-primary);
  box-shadow: 0 4px 16px rgba(46, 204, 113, 0.1);
}

.payback-card__config {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.payback-card__time {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.payback-card p {
  font-size: 13px;
  line-height: 1.5;
  color: var(--color-text-light);
}

/* ===========================
   Institutions Page
   =========================== */

.inst-hero__cta {
  display: inline-block;
  padding: 16px 36px;
  background: var(--color-cta);
  color: #1A1D23;
  border-radius: 8px;
  font-weight: 700;
  font-size: 16px;
  transition: background 0.2s;
}

.inst-hero__cta:hover {
  background: var(--color-cta-hover);
  color: #1A1D23;
}

/* Use Case Cards */

.inst-cases {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.inst-case {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 32px;
}

.inst-case__icon {
  color: var(--color-primary);
  margin-bottom: 16px;
}

.inst-case h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 4px;
}

.inst-case__sub {
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 16px;
}

.inst-case__list {
  margin: 0 0 20px;
  padding: 0;
}

.inst-case__list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text);
}

.inst-case__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: 0.6;
}

.inst-case__price {
  font-size: 14px;
  color: var(--color-text-light);
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.inst-case__price strong {
  color: var(--color-primary);
}

/* Data Tier Cards */

.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.tier-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 32px;
}

.tier-card--featured {
  border-color: var(--color-primary);
  box-shadow: 0 4px 16px rgba(46, 204, 113, 0.1);
}

.tier-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.tier-card__price {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.tier-card__features {
  margin: 0 0 20px;
  padding: 0;
}

.tier-card__features li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 6px;
  font-size: 14px;
  color: var(--color-text);
}

.tier-card__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 10px;
  height: 5px;
  border-left: 2px solid var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  transform: rotate(-45deg);
}

.tier-card__note {
  font-size: 13px;
  color: var(--color-text-light);
  font-style: italic;
}

/* Fleet Cards */

.fleet-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.fleet-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 32px;
  text-align: center;
}

.fleet-card__number {
  font-family: var(--font-mono);
  font-size: 48px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.fleet-card__label {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.fleet-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.fleet-card p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text);
}

/* Contact CTA */

.inst-contact {
  text-align: center;
  margin-top: 32px;
}

.inst-contact__btn {
  display: inline-block;
  padding: 16px 40px;
  background: var(--color-cta);
  color: #1A1D23;
  border-radius: 8px;
  font-weight: 700;
  font-size: 18px;
  transition: background 0.2s;
  margin-bottom: 16px;
}

.inst-contact__btn:hover {
  background: var(--color-cta-hover);
  color: #1A1D23;
}

.inst-contact__note {
  font-size: 14px;
  color: rgba(255,255,255,0.45);
}

/* Institutions — Responsive */

@media (max-width: 1024px) {
  .inst-cases { grid-template-columns: 1fr 1fr; }
  .tier-grid { grid-template-columns: 1fr 1fr; }
  .fleet-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .inst-cases { grid-template-columns: 1fr; }
  .tier-grid { grid-template-columns: 1fr; }
  .fleet-grid { grid-template-columns: 1fr; }
  .fleet-card__number { font-size: 36px; }
}

/* ===========================
   Network Page — Responsive
   =========================== */

@media (max-width: 1024px) {
  .token-grid,
  .env-grid { grid-template-columns: 1fr 1fr; }
  .payback-grid { grid-template-columns: 1fr 1fr; }
  .network-flow { flex-wrap: wrap; justify-content: center; gap: 24px; }
  .network-flow__arrow { display: none; }
  .network-flow__step { min-width: 200px; }
}

@media (max-width: 640px) {
  .token-grid,
  .env-grid { grid-template-columns: 1fr; }
  .payback-grid { grid-template-columns: 1fr; }
  .network-flow__step { min-width: 100%; text-align: center; }
  .env-card__stat { font-size: 32px; }
  .payback-card__time { font-size: 20px; }
}

/* ===========================
   Scroll Animations
   =========================== */

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in--visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===========================
   Responsive — Tablet
   =========================== */

@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .hero__subtitle { max-width: 100%; }
  .hero__visual { order: -1; }
  .hero__illustration { max-width: 320px; }

  .waitlist-form {
    max-width: 100%;
    justify-content: center;
    margin: 0 auto;
  }

  .hero__note { text-align: center; }

  .sensors__grid { grid-template-columns: repeat(3, 1fr); }
  .pricing__grid { grid-template-columns: repeat(3, 1fr); }
  .pricing-card--featured { transform: scale(1.02); }

  .economics__inner {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .economics__details { text-align: left; }

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

/* ===========================
   Responsive — Mobile
   =========================== */

@media (max-width: 640px) {
  .section-title { font-size: 28px; }
  .section-subtitle { font-size: 16px; }

  .nav__toggle { display: flex; }

  .nav__links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: 20px 24px;
    gap: 16px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  }

  .nav__links--open { display: flex; }

  .hero { padding: 100px 0 60px; }
  .hero__title { font-size: 36px; }
  .hero__subtitle { font-size: 16px; }

  .waitlist-form {
    flex-direction: column;
  }

  .waitlist-form button {
    width: 100%;
  }

  .problem__grid,
  .pricing__grid,
  .buyers__grid {
    grid-template-columns: 1fr;
  }

  .pricing-card--featured { transform: none; }

  .sensors__grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .steps {
    flex-direction: column;
    align-items: center;
    gap: 32px;
  }

  .step__connector {
    transform: rotate(90deg);
    padding: 0;
  }

  .roadmap__timeline {
    flex-direction: column;
    gap: 24px;
    padding-left: 24px;
  }

  .roadmap__timeline::before {
    top: 0;
    bottom: 0;
    left: 6px;
    right: auto;
    width: 3px;
    height: auto;
  }

  .roadmap__item {
    text-align: left;
    padding: 0 0 0 24px;
  }

  .roadmap__dot {
    position: absolute;
    left: -24px;
    top: 2px;
    margin: 0;
  }

  .economics__number { font-size: 56px; }

  .cta-bottom h2 { font-size: 28px; }

  .footer__inner { justify-content: center; text-align: center; }
  .footer__brand { text-align: center; width: 100%; }
  .footer__links { justify-content: center; width: 100%; }
}