:root {
  --color-navy: #0b2a3c;
  --color-navy-2: #123d55;
  --color-navy-3: #061e2c;
  --color-green: #16865a;
  --color-green-bright: #20a86c;
  --color-green-pale: #eaf7f0;
  --color-orange: #e97822;
  --color-bg: #f4f6f8;
  --color-bg-blue: #edf3f6;
  --color-white: #fff;
  --color-text: #1c2933;
  --color-muted: #64727d;
  --color-border: #dce3e8;
  --shadow-sm: 0 12px 32px rgba(11, 42, 60, 0.08);
  --shadow-lg: 0 26px 70px rgba(11, 42, 60, 0.15);
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --container: 1240px;
  --header-height: 72px;
  color-scheme: light;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--color-text);
  background: var(--color-white);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

p,
h1,
h2,
h3,
ul,
ol,
dl,
figure {
  margin-top: 0;
}

h1,
h2,
h3 {
  color: var(--color-navy);
  font-weight: 750;
  line-height: 1.1;
  letter-spacing: -0.035em;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(2.15rem, 7.8vw, 4.45rem);
}

h2 {
  margin-bottom: 20px;
  font-size: clamp(2rem, 5.7vw, 3.4rem);
}

h3 {
  margin-bottom: 10px;
  font-size: 1.15rem;
  line-height: 1.25;
  letter-spacing: -0.018em;
}

p:last-child,
ul:last-child,
ol:last-child,
dl:last-child {
  margin-bottom: 0;
}

:focus-visible {
  outline: 3px solid rgba(233, 120, 34, 0.72);
  outline-offset: 4px;
}

::selection {
  color: var(--color-white);
  background: var(--color-green);
}

.container {
  width: min(calc(100% - 32px), var(--container));
  margin-inline: auto;
}

.section {
  padding: 76px 0;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 10px;
  left: 10px;
  padding: 10px 16px;
  border-radius: 8px;
  color: var(--color-white);
  background: var(--color-navy);
  transform: translateY(-140%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 15px;
  color: var(--color-green);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  line-height: 1.3;
  text-transform: uppercase;
}

.eyebrow > span {
  width: 26px;
  height: 2px;
  flex: 0 0 auto;
  background: var(--color-green);
}

.eyebrow-light {
  color: #77d7a8;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 40px;
}

.section-heading > p:last-child,
.section-heading-split > p {
  color: var(--color-muted);
  font-size: 1.03rem;
}

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
  border: 1px solid var(--color-green);
  border-radius: 10px;
  color: var(--color-white);
  background: var(--color-green);
  box-shadow: 0 9px 24px rgba(22, 134, 90, 0.2);
  font-weight: 750;
  line-height: 1.25;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.button:hover {
  background: #11754e;
  border-color: #11754e;
  box-shadow: 0 12px 30px rgba(22, 134, 90, 0.28);
  transform: translateY(-2px);
}

.button:active {
  transform: translateY(0);
}

.button-small {
  min-height: 42px;
  padding: 10px 15px;
  font-size: 0.86rem;
}

.button-light {
  color: var(--color-navy);
  background: var(--color-white);
  border-color: var(--color-white);
  box-shadow: none;
}

.button-light:hover {
  color: var(--color-white);
  background: var(--color-green-bright);
  border-color: var(--color-green-bright);
}

.button-wide {
  width: 100%;
}

.button[disabled] {
  cursor: wait;
  opacity: 0.78;
  transform: none;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-navy);
  font-weight: 750;
  text-decoration: none;
}

.text-link span {
  color: var(--color-green);
  transition: transform 0.2s ease;
}

.text-link:hover span {
  transform: translateY(3px);
}

/* Header */
.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  right: 0;
  left: 0;
  height: var(--header-height);
  border-bottom: 1px solid rgba(220, 227, 232, 0.78);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(14px);
  transition: box-shadow 0.2s ease;
}

.site-header.is-scrolled {
  box-shadow: 0 8px 28px rgba(11, 42, 60, 0.08);
}

.header-inner {
  display: flex;
  height: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: inline-flex;
  width: 146px;
  height: 48px;
  align-items: center;
  overflow: hidden;
  text-decoration: none;
}

.brand img {
  width: 100%;
  height: auto;
  transform: scale(1.22);
}

.menu-toggle {
  display: grid;
  width: 44px;
  height: 44px;
  place-content: center;
  gap: 5px;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 9px;
  color: var(--color-navy);
  background: var(--color-white);
  cursor: pointer;
}

.menu-toggle span {
  width: 20px;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.main-nav {
  position: fixed;
  top: var(--header-height);
  right: 0;
  left: 0;
  display: flex;
  max-height: calc(100vh - var(--header-height));
  flex-direction: column;
  gap: 0;
  overflow-y: auto;
  padding: 15px 16px 24px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-10px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.main-nav.is-open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.main-nav a {
  padding: 14px 5px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-navy);
  font-weight: 700;
  text-decoration: none;
}

.main-nav a:hover {
  color: var(--color-green);
}

.header-cta {
  display: none;
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-height) + 50px) 0 70px;
  background: linear-gradient(135deg, #fff 0%, #f8fafb 48%, #eef4f6 100%);
}

.hero::before {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(11, 42, 60, 0.032) 1px, transparent 1px), linear-gradient(90deg, rgba(11, 42, 60, 0.032) 1px, transparent 1px);
  background-size: 44px 44px;
  content: "";
  mask-image: linear-gradient(to bottom, transparent, #000 25%, transparent 86%);
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  top: 12%;
  right: -200px;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  background: rgba(30, 158, 99, 0.08);
  filter: blur(35px);
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 42px;
}

.hero-copy {
  max-width: 760px;
}

.hero h1 em {
  color: var(--color-green);
  font-style: normal;
}

.hero-lead {
  max-width: 720px;
  margin-bottom: 28px;
  color: #475762;
  font-size: 1.05rem;
}

.hero-facts {
  display: grid;
  gap: 10px;
  margin-bottom: 30px;
  padding: 0;
  list-style: none;
}

.hero-facts li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid var(--color-border);
}

.hero-facts strong {
  min-width: 92px;
  color: var(--color-navy);
  font-size: 1.1rem;
  line-height: 1.1;
}

.hero-facts span {
  color: var(--color-muted);
  font-size: 0.9rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px 24px;
}

.hero-visual {
  position: relative;
  aspect-ratio: 16 / 9;
  margin-bottom: 0;
  overflow: hidden;
  border: 7px solid var(--color-white);
  border-radius: 22px;
  background: #e8edef;
  box-shadow: var(--shadow-lg);
}

.hero-visual::after {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(11, 42, 60, 0.08);
  border-radius: 15px;
  content: "";
  pointer-events: none;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: cover;
  object-position: center;
}

.hero-visual figcaption {
  position: absolute;
  right: 12px;
  bottom: 12px;
  left: 12px;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 0 9px;
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 10px;
  color: var(--color-white);
  background: rgba(6, 30, 44, 0.88);
  backdrop-filter: blur(8px);
  font-size: 0.8rem;
  font-weight: 700;
}

.hero-visual figcaption small {
  grid-column: 2;
  color: rgba(255, 255, 255, 0.67);
  font-size: 0.65rem;
  font-weight: 500;
}

.status-dot {
  width: 8px;
  height: 8px;
  grid-row: 1 / 3;
  border-radius: 50%;
  background: #32c981;
  box-shadow: 0 0 0 5px rgba(50, 201, 129, 0.14);
}

/* Compact project criteria */
.project-criteria {
  padding: 22px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-white);
}

.project-criteria-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.project-criteria-list li {
  display: grid;
  grid-template-columns: minmax(105px, auto) 1fr;
  align-items: baseline;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px solid var(--color-border);
}

.project-criteria-list strong {
  color: var(--color-green);
  font-size: 0.94rem;
}

.project-criteria-list span {
  color: var(--color-navy);
  font-size: 0.82rem;
  font-weight: 650;
}

.project-criteria p {
  margin: 15px 0 0;
  color: var(--color-muted);
  font-size: 0.79rem;
  line-height: 1.55;
}

/* Economic effect */
.effect {
  background: var(--color-white);
}

.comparison {
  display: grid;
  gap: 14px;
}

.comparison-card {
  padding: 27px 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
}

.comparison-current {
  color: var(--color-muted);
  background: var(--color-bg);
}

.comparison-new {
  border-color: rgba(22, 134, 90, 0.3);
  box-shadow: var(--shadow-sm);
}

.card-kicker {
  margin-bottom: 14px;
  color: var(--color-muted);
  font-size: 0.73rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.comparison-new .card-kicker {
  color: var(--color-green);
}

.tariff-line {
  position: relative;
  height: 13px;
  margin: 27px 0;
  overflow: visible;
  border-radius: 99px;
  background: #e3e8eb;
}

.tariff-line span {
  display: block;
  height: 100%;
  border-radius: inherit;
}

.tariff-line-current span {
  background: #8e9aa2;
}

.tariff-line-new span {
  background: linear-gradient(90deg, var(--color-green), #3db77e);
}

.tariff-line b {
  position: absolute;
  top: 50%;
  right: 0;
  padding: 4px 8px;
  border-radius: 6px;
  color: var(--color-green);
  background: var(--color-green-pale);
  font-size: 0.72rem;
  transform: translateY(-50%);
}

.check-list {
  display: grid;
  gap: 13px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 27px;
  color: #42535d;
}

.check-list li::before {
  position: absolute;
  top: 0;
  left: 0;
  color: var(--color-green);
  content: "\2713";
  font-weight: 900;
}

.muted-list li::before {
  color: #87939b;
  content: "\2014";
}

.comparison-arrow {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  justify-self: center;
  border-radius: 50%;
  color: var(--color-green);
  background: var(--color-green-pale);
  font-size: 1.2rem;
  transform: rotate(90deg);
}

.disclaimer {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 22px;
  color: var(--color-muted);
  font-size: 0.83rem;
}

.disclaimer svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  margin-top: 2px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-width: 1.8;
}

/* Model */
.model {
  background: var(--color-bg);
}

.model-steps {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.model-steps li {
  position: relative;
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 15px;
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
}

.step-number {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 9px;
  color: var(--color-green);
  background: var(--color-green-pale);
  font-size: 0.8rem;
  font-weight: 850;
}

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

/* Calculator */
.calculator-section {
  position: relative;
  overflow: hidden;
  color: rgba(255, 255, 255, 0.74);
  background: var(--color-navy);
}

.calculator-section::before {
  position: absolute;
  top: -180px;
  right: -180px;
  width: 550px;
  height: 550px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  box-shadow: 0 0 0 80px rgba(255, 255, 255, 0.018), 0 0 0 160px rgba(255, 255, 255, 0.014);
  content: "";
}

.calculator-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 38px;
}

.calculator-copy h2,
.request-copy h2 {
  color: var(--color-white);
}

.calculator-copy > p:not(.eyebrow):not(.calculator-note) {
  max-width: 620px;
}

.calculator-form {
  display: grid;
  gap: 18px;
  margin-top: 30px;
}

.field {
  position: relative;
}

.field label {
  display: block;
  margin-bottom: 8px;
  color: inherit;
  font-size: 0.9rem;
  font-weight: 700;
}

.field label span {
  color: inherit;
  font-weight: 500;
  opacity: 0.74;
}

.field input[type="text"],
.field input[type="tel"] {
  width: 100%;
  min-height: 52px;
  padding: 13px 14px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 9px;
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.075);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.field input::placeholder {
  color: rgba(255, 255, 255, 0.43);
}

.field input:hover {
  border-color: rgba(255, 255, 255, 0.4);
}

.field input:focus {
  border-color: #63d19b;
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 0 3px rgba(99, 209, 155, 0.16);
}

.field input[aria-invalid="true"] {
  border-color: #ff9f87;
}

.field-error {
  display: block;
  min-height: 18px;
  margin-top: 4px;
  color: #ffad97;
  font-size: 0.77rem;
  line-height: 1.35;
}

.field-hint {
  display: block;
  margin-top: 5px;
  color: rgba(255, 255, 255, 0.56);
  font-size: 0.72rem;
  line-height: 1.35;
}

.fixed-discount {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 52px;
  padding: 12px 15px;
  border: 1px solid rgba(99, 209, 155, 0.28);
  border-radius: 9px;
  color: rgba(255, 255, 255, 0.74);
  background: rgba(32, 168, 108, 0.11);
  font-size: 0.85rem;
}

.fixed-discount strong {
  color: #8ce0b5;
  font-size: 1.05rem;
}

.calculator-note {
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.48);
  font-size: 0.75rem;
}

.calculator-result {
  align-self: center;
  padding: 24px 20px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  color: var(--color-text);
  background: var(--color-white);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.18);
}

.result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--color-navy);
  font-size: 0.88rem;
  font-weight: 800;
}

.result-badge {
  padding: 4px 8px;
  border-radius: 99px;
  color: var(--color-green);
  background: var(--color-green-pale);
  font-size: 0.68rem;
}

.result-list {
  margin: 0;
}

.result-list > div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 15px 0;
  border-top: 1px solid var(--color-border);
}

.result-list dt {
  color: var(--color-muted);
  font-size: 0.82rem;
}

.result-list dd {
  margin: 0;
  color: var(--color-navy);
  font-size: 0.94rem;
  font-weight: 800;
  text-align: right;
}

.savings-highlight {
  display: grid;
  gap: 4px;
  margin-top: 3px;
  padding: 19px;
  border-radius: 12px;
  color: #3f6b57;
  background: var(--color-green-pale);
}

.savings-highlight span,
.annual-savings span {
  font-size: 0.8rem;
}

.savings-highlight strong {
  color: var(--color-green);
  font-size: clamp(1.65rem, 7vw, 2.5rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.annual-savings {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  padding: 17px 19px;
}

.annual-savings strong {
  color: var(--color-navy);
  font-size: 1.08rem;
}

.calculator-result > p {
  margin: 6px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 0.72rem;
}

.calculator-result.has-result .savings-highlight {
  animation: resultPulse 0.48s ease-out;
}

@keyframes resultPulse {
  0% { transform: scale(0.98); }
  70% { transform: scale(1.012); }
  100% { transform: scale(1); }
}

/* Scheme */
.scheme-section {
  background: var(--color-bg);
}

.technical-scheme {
  padding: 22px 16px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #eef3f5;
}

.energy-diagram {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    "source"
    "main-arrow"
    "network"
    "reserve"
    "output-arrow"
    "consumers";
  align-items: stretch;
}

.energy-card {
  display: grid;
  min-width: 0;
  align-content: center;
  justify-items: center;
  padding: 22px 18px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: var(--color-white);
  text-align: center;
}

.energy-card h3,
.energy-reserve-content h3 {
  margin: 0;
  color: var(--color-navy);
  font-size: 1rem;
  line-height: 1.3;
}

.energy-card p,
.energy-reserve-content p {
  margin: 7px 0 0;
  color: var(--color-muted);
  font-size: 0.875rem;
  line-height: 1.45;
}

.energy-source-card {
  grid-area: source;
  border-color: rgba(22, 134, 90, 0.38);
  border-left: 3px solid var(--color-green);
}

.energy-source-card > h3 {
  margin-bottom: 18px;
  color: var(--color-green);
}

.energy-source-sequence {
  display: grid;
  width: 100%;
  gap: 8px;
}

.energy-source-step {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  grid-template-rows: auto auto;
  align-items: center;
  gap: 2px 12px;
  min-width: 0;
  padding: 10px 0;
  text-align: left;
}

.energy-source-step .energy-icon {
  grid-row: 1 / 3;
}

.energy-source-step b,
.energy-source-step span {
  min-width: 0;
}

.energy-source-step b {
  color: var(--color-navy);
  font-size: 0.94rem;
}

.energy-source-step span {
  color: var(--color-muted);
  font-size: 0.875rem;
  line-height: 1.4;
}

.energy-icon {
  width: 48px;
  height: 48px;
  padding: 8px;
  border-radius: 10px;
  color: var(--color-navy-2);
  background: var(--color-bg-blue);
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.energy-source-card .energy-icon {
  color: var(--color-green);
  background: var(--color-green-pale);
}

.energy-mini-arrow,
.energy-arrow {
  display: grid;
  place-items: center;
  color: var(--color-green);
}

.energy-mini-arrow {
  height: 28px;
}

.energy-mini-arrow svg {
  width: 42px;
  height: 20px;
  transform: rotate(90deg);
}

.energy-mini-arrow path,
.energy-arrow path {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.5;
  vector-effect: non-scaling-stroke;
}

.energy-arrow {
  height: 52px;
}

.energy-arrow svg {
  width: 58px;
  height: 24px;
  transform: rotate(90deg);
}

.energy-arrow-main {
  grid-area: main-arrow;
}

.energy-network-card {
  grid-area: network;
  border-color: var(--color-navy);
  color: var(--color-white);
  background: var(--color-navy);
}

.energy-network-card .energy-icon {
  margin-bottom: 12px;
  color: #8ce0b5;
  background: rgba(255, 255, 255, 0.1);
}

.energy-network-card h3,
.energy-network-card p {
  color: var(--color-white);
}

.energy-network-card p {
  opacity: 0.72;
}

.energy-reserve-card {
  display: grid;
  grid-area: reserve;
}

.energy-arrow-reserve {
  height: 46px;
  color: var(--color-navy-2);
  opacity: 0.68;
}

.energy-arrow-reserve svg {
  transform: rotate(-90deg);
}

.energy-reserve-content {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  align-items: center;
  gap: 2px 13px;
  min-width: 0;
  padding: 15px;
  border: 1px dashed rgba(11, 42, 60, 0.4);
  border-radius: 11px;
  background: #f8fafb;
}

.energy-reserve-content .energy-icon {
  grid-row: 1 / 4;
}

.energy-reserve-content > div {
  min-width: 0;
}

.energy-reserve-content span {
  display: block;
  margin-bottom: 3px;
  color: var(--color-green);
  font-size: 0.875rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.energy-reserve-content h3,
.energy-reserve-content p {
  text-align: left;
}

.energy-arrow-output {
  grid-area: output-arrow;
}

.energy-consumers-card {
  grid-area: consumers;
  border-color: rgba(11, 42, 60, 0.24);
}

.energy-consumers-card .energy-icon {
  margin-bottom: 12px;
}

.scheme-notes {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.scheme-notes article {
  padding: 18px 0 0;
  border-top: 2px solid var(--color-green);
}

.scheme-notes p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.875rem;
  line-height: 1.55;
}

/* Responsibility */
.responsibility-section {
  padding: 62px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: #f5f8f7;
}

.responsibility-grid {
  display: grid;
  gap: 28px;
}

.responsibility-grid h2 {
  max-width: 560px;
  margin-bottom: 0;
}

.responsibility-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.responsibility-list li {
  position: relative;
  padding: 14px 0 14px 26px;
  border-top: 1px solid rgba(11, 42, 60, 0.12);
  color: #42535d;
  font-size: 0.9rem;
}

.responsibility-list li::before {
  position: absolute;
  top: 21px;
  left: 4px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-green);
  content: "";
}

/* Requirements */
.requirements {
  background: var(--color-bg);
}

.requirements-grid {
  display: grid;
  gap: 34px;
}

.requirements-copy > p:not(.eyebrow) {
  color: var(--color-muted);
}

.orientation-card {
  margin-top: 28px;
  padding: 22px;
  border-radius: 13px;
  color: var(--color-white);
  background: var(--color-navy);
}

.orientation-card > span {
  display: block;
  margin-bottom: 13px;
  color: #8edab6;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.orientation-card dl {
  display: grid;
  gap: 10px;
  margin: 0;
}

.orientation-card dl > div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.orientation-card dt {
  color: rgba(255, 255, 255, 0.63);
  font-size: 0.78rem;
}

.orientation-card dd {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 750;
  text-align: right;
}

.requirements-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.requirements-list li {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 14px;
  padding: 19px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.requirements-list li:hover {
  border-color: rgba(22, 134, 90, 0.36);
  transform: translateX(3px);
}

.requirements-list li > span {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 8px;
  color: var(--color-green);
  background: var(--color-green-pale);
  font-size: 0.72rem;
  font-weight: 850;
}

.requirements-list p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.85rem;
}

/* Stages */
.stages {
  background: var(--color-white);
}

.stage-list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-border);
  list-style: none;
}

.stage-list li {
  position: relative;
  min-width: 0;
  padding: 24px 21px;
  background: var(--color-white);
}

.stage-list li > span {
  display: block;
  margin-bottom: 24px;
  color: var(--color-green);
  font-size: 0.77rem;
  font-weight: 850;
}

.stage-list li > span::after {
  display: inline-block;
  width: 36px;
  height: 1px;
  margin-left: 9px;
  background: var(--color-green);
  content: "";
  vertical-align: middle;
}

.stage-list p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.83rem;
}

/* FAQ */
.faq {
  background: var(--color-bg);
}

.faq-grid {
  display: grid;
  gap: 32px;
}

.faq-intro > p:not(.eyebrow) {
  color: var(--color-muted);
}

.accordion {
  border-top: 1px solid var(--color-border);
}

.accordion details {
  border-bottom: 1px solid var(--color-border);
}

.accordion summary {
  position: relative;
  display: flex;
  min-height: 74px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 0;
  color: var(--color-navy);
  font-weight: 750;
  line-height: 1.35;
  cursor: pointer;
  list-style: none;
}

.accordion summary::-webkit-details-marker {
  display: none;
}

.accordion summary span {
  position: relative;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-white);
}

.accordion summary span::before,
.accordion summary span::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 11px;
  height: 1px;
  background: var(--color-navy);
  content: "";
  transform: translate(-50%, -50%);
  transition: transform 0.2s ease;
}

.accordion summary span::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.accordion details[open] summary span::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.accordion details[open] summary {
  color: var(--color-green);
}

.accordion details p {
  max-width: 780px;
  margin-bottom: 21px;
  padding-right: 46px;
  color: var(--color-muted);
  font-size: 0.92rem;
}

/* Form */
.request-section {
  position: relative;
  overflow: hidden;
  color: rgba(255, 255, 255, 0.74);
  background: linear-gradient(135deg, var(--color-navy-3), var(--color-navy-2));
}

.request-section::after {
  position: absolute;
  right: -70px;
  bottom: -100px;
  width: 340px;
  height: 340px;
  border: 70px solid rgba(255, 255, 255, 0.025);
  border-radius: 50%;
  content: "";
}

.request-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 38px;
}

.request-copy > p:not(.eyebrow) {
  max-width: 650px;
}

.request-points {
  display: grid;
  gap: 10px;
  margin: 25px 0 0;
  padding: 0;
  list-style: none;
}

.request-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.91rem;
}

.request-points span {
  display: grid;
  width: 24px;
  height: 24px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  color: #85e0b2;
  background: rgba(32, 168, 108, 0.18);
  font-size: 0.7rem;
}

.request-contact {
  margin: 22px 0 0;
  font-size: 0.9rem;
}

.request-contact a {
  color: #8ce0b5;
  font-weight: 750;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.form-card {
  padding: 24px 20px;
  border-radius: var(--radius-md);
  color: var(--color-text);
  background: var(--color-white);
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.22);
}

.form-card form {
  display: grid;
  gap: 13px;
}

.form-card .field label {
  color: var(--color-navy);
}

.form-card .field input[type="text"],
.form-card .field input[type="tel"] {
  color: var(--color-text);
  border-color: var(--color-border);
  background: var(--color-bg);
}

.form-card .field input::placeholder {
  color: #8a969e;
}

.form-card .field input:hover {
  border-color: #aebbc3;
}

.form-card .field input:focus {
  border-color: var(--color-green);
  background: var(--color-white);
  box-shadow: 0 0 0 3px rgba(22, 134, 90, 0.12);
}

.form-card .field-error {
  color: #b63a24;
}

.honeypot {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  clip: rect(1px, 1px, 1px, 1px) !important;
  white-space: nowrap !important;
}

.consent-check {
  display: grid;
  grid-template-columns: 20px 1fr;
  align-items: start;
  gap: 10px;
  color: var(--color-muted);
  font-size: 0.75rem;
  line-height: 1.5;
  cursor: pointer;
}

.consent-check input {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  accent-color: var(--color-green);
}

.consent-check a {
  color: var(--color-navy);
}

.consent-error {
  margin-top: -8px;
}

.form-note {
  color: #85919a;
  font-size: 0.68rem;
  line-height: 1.45;
  text-align: center;
}

.form-status {
  display: none;
  margin: 0;
  padding: 10px;
  border-radius: 7px;
  font-size: 0.8rem;
  text-align: center;
}

.form-status.is-visible {
  display: block;
}

.form-status.is-error {
  color: #9a2f1e;
  background: #fff0ed;
}

.form-status.is-success {
  color: #176a49;
  background: var(--color-green-pale);
}

.button-loader {
  display: none;
  width: 17px;
  height: 17px;
  margin-left: 8px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: var(--color-white);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.button.is-loading .button-loader {
  display: block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Footer */
.site-footer {
  color: rgba(255, 255, 255, 0.55);
  background: #061b28;
}

.footer-grid {
  display: grid;
  gap: 32px;
  padding-top: 54px;
  padding-bottom: 44px;
}

.brand-footer {
  width: 170px;
  margin-bottom: 14px;
  border-radius: 6px;
  background: var(--color-white);
}

.footer-brand p {
  max-width: 360px;
  font-size: 0.85rem;
}

.footer-column {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.footer-column h2 {
  margin-bottom: 7px;
  color: var(--color-white);
  font-size: 0.78rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.footer-column a,
.footer-column span {
  font-size: 0.83rem;
  text-decoration: none;
}

.footer-column a:hover {
  color: #8ae0b4;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding-top: 20px;
  padding-bottom: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.7rem;
}

/* Legal and system pages */
.inner-page {
  min-height: 100vh;
  background: var(--color-bg);
}

.inner-page-header {
  padding: 18px 0;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-white);
}

.inner-page-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.back-link {
  color: var(--color-navy);
  font-size: 0.83rem;
  font-weight: 750;
  text-decoration: none;
}

.back-link:hover {
  color: var(--color-green);
}

.legal-main {
  padding: 52px 0 76px;
}

.legal-card {
  max-width: 900px;
  margin: auto;
  padding: 28px 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.legal-card h1 {
  font-size: clamp(2rem, 6vw, 3.2rem);
}

.legal-card h2 {
  margin-top: 34px;
  font-size: 1.35rem;
}

.legal-card p,
.legal-card li {
  color: #4f5f69;
}

.legal-card ul,
.legal-card ol {
  padding-left: 22px;
}

.legal-warning {
  padding: 15px;
  border-left: 3px solid var(--color-orange);
  border-radius: 5px;
  background: #fff7ef;
  font-size: 0.86rem;
}

.system-page {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 28px 16px;
  background: linear-gradient(145deg, #f7f9fa, #e8f0f3);
}

.system-card {
  width: min(100%, 650px);
  padding: 42px 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-white);
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.system-mark {
  display: grid;
  width: 68px;
  height: 68px;
  place-items: center;
  margin: 0 auto 24px;
  border-radius: 50%;
  color: var(--color-green);
  background: var(--color-green-pale);
  font-size: 1.8rem;
  font-weight: 850;
}

.system-card h1 {
  font-size: clamp(2rem, 7vw, 3.5rem);
}

.system-card p {
  color: var(--color-muted);
}

.system-card .button {
  margin-top: 10px;
}

@media (min-width: 560px) {
  .container {
    width: min(calc(100% - 48px), var(--container));
  }

  .hero-facts {
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
  }

  .hero-facts li {
    display: block;
    padding: 18px 15px;
    border-bottom: 0;
    border-left: 1px solid var(--color-border);
  }

  .hero-facts li:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .hero-facts strong,
  .hero-facts span {
    display: block;
  }

  .hero-facts strong {
    margin-bottom: 5px;
  }

  .comparison-card {
    padding: 32px;
  }

  .calculator-form {
    grid-template-columns: 1fr 1fr;
  }

  .fixed-discount,
  .calculator-form .button,
  .calculator-note {
    grid-column: 1 / -1;
  }

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

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

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

  .legal-card {
    padding: 48px;
  }

  .system-card {
    padding: 60px 50px;
  }
}

@media (min-width: 768px) {
  :root {
    --header-height: 78px;
  }

  .section {
    padding: 100px 0;
  }

  .hero {
    padding-top: calc(var(--header-height) + 70px);
    padding-bottom: 92px;
  }

  .hero-lead {
    font-size: 1.13rem;
  }

  .project-criteria {
    padding: 24px 0 20px;
  }

  .project-criteria-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .project-criteria-list li {
    display: block;
    padding: 2px 24px;
    border-bottom: 0;
    border-left: 1px solid var(--color-border);
  }

  .project-criteria-list li:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .project-criteria-list strong,
  .project-criteria-list span {
    display: block;
  }

  .project-criteria-list strong {
    margin-bottom: 5px;
  }

  .project-criteria p {
    text-align: center;
  }

  .hero-visual figcaption {
    right: 18px;
    bottom: 18px;
    left: auto;
    min-width: 290px;
  }

  .section-heading {
    margin-bottom: 52px;
  }

  .section-heading-split {
    display: grid;
    max-width: none;
    grid-template-columns: minmax(0, 1.3fr) minmax(260px, 0.7fr);
    align-items: end;
    gap: 60px;
  }

  .section-heading-split h2 {
    margin-bottom: 0;
  }

  .comparison {
    grid-template-columns: 1fr 50px 1fr;
    align-items: stretch;
  }

  .comparison-arrow {
    align-self: center;
    transform: none;
  }

  .model-steps li {
    grid-template-columns: 1fr;
    min-height: 220px;
  }

  .calculator-result {
    padding: 32px;
  }

  .technical-scheme {
    padding: 34px;
  }

  .responsibility-grid {
    grid-template-columns: minmax(240px, 0.72fr) minmax(0, 1.28fr);
    align-items: start;
    gap: 64px;
  }

  .requirements-list {
    grid-template-columns: 1fr 1fr;
  }

  .stage-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .request-grid {
    grid-template-columns: minmax(0, 1fr) minmax(350px, 0.78fr);
    align-items: center;
    gap: 70px;
  }

  .form-card {
    padding: 34px;
  }

  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

@media (min-width: 1024px) {
  :root {
    --header-height: 82px;
  }

  .brand {
    width: 166px;
  }

  .menu-toggle {
    display: none;
  }

  .main-nav {
    position: static;
    display: flex;
    max-height: none;
    flex: 1 1 auto;
    flex-direction: row;
    justify-content: center;
    gap: 23px;
    overflow: visible;
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }

  .main-nav a {
    position: relative;
    padding: 8px 0;
    border: 0;
    color: #42535d;
    font-size: 0.82rem;
    font-weight: 650;
  }

  .main-nav a::after {
    position: absolute;
    right: 0;
    bottom: 2px;
    left: 0;
    height: 2px;
    background: var(--color-green);
    content: "";
    transform: scaleX(0);
    transition: transform 0.2s ease;
  }

  .main-nav a:hover::after {
    transform: scaleX(1);
  }

  .header-cta {
    display: inline-flex;
  }

  .hero {
    display: grid;
    min-height: min(900px, 100vh);
    align-items: center;
    padding: calc(var(--header-height) + 40px) 0 62px;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1.03fr) minmax(420px, 0.97fr);
    align-items: center;
    gap: 54px;
  }

  .hero h1 {
    font-size: clamp(3.45rem, 4.7vw, 4.65rem);
  }

  .hero-visual {
    margin-right: -7vw;
  }

  .hero-visual img {
    min-height: 0;
    object-position: center;
  }

  .model-steps {
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
  }

  .calculator-grid {
    grid-template-columns: minmax(0, 1fr) minmax(420px, 0.86fr);
    align-items: center;
    gap: 80px;
  }

  .energy-diagram {
    grid-template-columns: minmax(390px, 1.5fr) 54px minmax(175px, 0.72fr) 54px minmax(180px, 0.76fr);
    grid-template-rows: auto auto;
    grid-template-areas:
      "source main-arrow network output-arrow consumers"
      ". . reserve . .";
    align-items: stretch;
    gap: 14px 10px;
  }

  .energy-card {
    min-height: 208px;
    padding: 24px 18px;
  }

  .energy-source-card {
    justify-items: stretch;
  }

  .energy-source-card > h3 {
    text-align: left;
  }

  .energy-source-sequence {
    grid-template-columns: minmax(90px, 1fr) 28px minmax(105px, 1fr) 28px minmax(105px, 1fr);
    align-items: center;
    gap: 8px;
  }

  .energy-source-step {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto auto auto;
    justify-items: center;
    gap: 5px;
    padding: 0;
    text-align: center;
  }

  .energy-source-step .energy-icon {
    grid-row: auto;
    margin-bottom: 4px;
  }

  .energy-source-step span {
    font-size: 0.78rem;
  }

  .energy-mini-arrow {
    height: auto;
  }

  .energy-mini-arrow svg,
  .energy-arrow svg {
    transform: none;
  }

  .energy-arrow {
    height: auto;
    align-self: center;
  }

  .energy-reserve-card {
    align-self: start;
  }

  .energy-arrow-reserve {
    height: 44px;
  }

  .energy-arrow-reserve svg {
    transform: rotate(-90deg);
  }

  .energy-reserve-content {
    grid-template-columns: 42px minmax(0, 1fr);
    padding: 13px;
  }

  .energy-reserve-content .energy-icon {
    width: 42px;
    height: 42px;
  }

  .energy-reserve-content h3 {
    font-size: 0.9rem;
  }

  .energy-reserve-content p {
    font-size: 0.78rem;
  }

  .scheme-notes {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }

  .requirements-grid {
    grid-template-columns: minmax(330px, 0.8fr) minmax(0, 1.2fr);
    align-items: start;
    gap: 72px;
  }

  .faq-grid {
    grid-template-columns: minmax(280px, 0.6fr) minmax(0, 1.4fr);
    align-items: start;
    gap: 90px;
  }

  .faq-intro {
    position: sticky;
    top: calc(var(--header-height) + 30px);
  }
}

@media (min-width: 1280px) {
  .hero-visual {
    margin-right: -10vw;
  }

  .technical-scheme {
    padding: 44px;
  }

  .stage-list {
    grid-template-columns: repeat(6, 1fr);
  }

  .stage-list li {
    min-height: 245px;
  }
}

@media (min-width: 1700px) {
  :root {
    --container: 1380px;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(520px, 1.05fr);
    gap: 90px;
  }

  .hero-visual {
    margin-right: -7vw;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  .site-header,
  .hero-actions,
  .request-section,
  .site-footer {
    display: none !important;
  }

  .hero {
    padding-top: 30px;
  }

  .section {
    padding: 35px 0;
  }
}