:root {
  --bg-1: #f6f0e9;
  --bg-2: #e8f1f3;
  --ink: #1a1a1a;
  --muted: #5c6267;
  --accent: #0f6d6b;
  --accent-strong: #0b4f4d;
  --accent-warm: #f19a5b;
  --card: #ffffff;
  --border: rgba(20, 26, 32, 0.12);
  --shadow: 0 20px 40px rgba(13, 25, 35, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Source Serif 4", serif;
  color: var(--ink);
  background-color: var(--bg-1);
  background:
    radial-gradient(circle at 75% 15%, rgba(241, 154, 91, 0.18), transparent 65%),
    linear-gradient(135deg, var(--bg-1) 0%, #f3f6f3 55%, var(--bg-2) 100%);
  background-repeat: no-repeat;
  min-height: 100vh;
}

.bg-glow {
  display: none;
}

.noise-layer {
  position: fixed;
  inset: 0;
  background-image: radial-gradient(rgba(15, 109, 107, 0.08) 1px, transparent 1px);
  background-size: 4px 4px;
  opacity: 0.12;
  pointer-events: none;
  z-index: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 6vw;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: "Sora", sans-serif;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  letter-spacing: 1px;
}

.brand-title {
  font-weight: 700;
}

.brand-subtitle {
  font-size: 12px;
  color: var(--muted);
}

.main-nav {
  display: flex;
  gap: 20px;
  font-family: "Sora", sans-serif;
  font-size: 14px;
}

.main-nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

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

.nav-dropdown {
  position: relative;
}

.nav-toggle {
  list-style: none;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  color: var(--muted);
  font-weight: 600;
  transition: color 0.2s ease;
}

.nav-toggle::-webkit-details-marker {
  display: none;
}

.nav-toggle::marker {
  content: "";
}

.nav-dropdown[open] .nav-toggle,
.nav-toggle:hover {
  color: var(--accent);
}

.nav-panel {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  min-width: 320px;
  max-width: 360px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 12px;
  display: grid;
  gap: 10px;
  z-index: 30;
}

.nav-item {
  display: grid;
  gap: 4px;
  padding: 10px 12px;
  border-radius: 12px;
  text-decoration: none;
  color: var(--ink);
  transition: background 0.2s ease, color 0.2s ease;
}

.nav-item:hover {
  background: rgba(15, 109, 107, 0.08);
  color: var(--accent-strong);
}

.nav-item-title {
  font-family: "Sora", sans-serif;
  font-weight: 600;
  font-size: 13px;
}

.nav-item-desc {
  font-size: 12px;
  color: var(--muted);
}

.header-cta {
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-family: "Sora", sans-serif;
  font-size: 14px;
  font-weight: 600;
}

main {
  position: relative;
  z-index: 1;
  padding: 40px 6vw 80px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 40px;
  align-items: center;
  margin-bottom: 40px;
}

.services-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 32px;
  align-items: center;
  margin-bottom: 36px;
}

.services-hero-copy h1 {
  font-family: "Sora", sans-serif;
  font-size: clamp(26px, 4vw, 44px);
  margin: 10px 0 12px;
}

.services-hero-panel {
  background: var(--card);
  border-radius: 18px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.service-card {
  display: grid;
  gap: 10px;
  padding: 18px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: var(--card);
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 36px rgba(13, 25, 35, 0.12);
}

.service-card h2 {
  font-family: "Sora", sans-serif;
  font-size: 18px;
  margin: 0;
}

.service-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.service-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(15, 109, 107, 0.12);
  color: var(--accent-strong);
  font-size: 12px;
  font-family: "Sora", sans-serif;
  width: fit-content;
}

.service-link {
  font-family: "Sora", sans-serif;
  font-size: 13px;
  color: var(--accent-strong);
}

.method-content {
  display: grid;
  gap: 18px;
}

.method-steps {
  display: grid;
  gap: 16px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.method-step {
  background: var(--card);
  border-radius: 18px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.method-step h2 {
  font-family: "Sora", sans-serif;
  font-size: 18px;
  margin: 0 0 10px;
}

.method-step p {
  margin: 0 0 10px;
  color: var(--muted);
}

.method-step p:last-child {
  margin-bottom: 0;
}

.method-formula {
  font-family: "Sora", sans-serif;
  font-size: 14px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(15, 109, 107, 0.08);
  color: var(--accent-strong);
  margin: 8px 0 12px;
}

.method-note {
  background: var(--card);
  border-radius: 18px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.method-note h3 {
  font-family: "Sora", sans-serif;
  font-size: 16px;
  margin: 0 0 8px;
}

.method-note p {
  margin: 0;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
  font-size: 13px;
  font-family: "Sora", sans-serif;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--accent);
}

.hero-copy h1 {
  font-family: "Sora", sans-serif;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.1;
  margin: 12px 0 16px;
}

.eyebrow {
  font-family: "Sora", sans-serif;
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0;
}

.lead {
  font-size: 18px;
  color: var(--muted);
  line-height: 1.6;
}

.hero-badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.hero-badges span {
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.6);
  font-size: 13px;
}

.hero-panel {
  background: var(--card);
  padding: 28px;
  border-radius: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.hero-panel .panel-title {
  font-family: "Sora", sans-serif;
  font-weight: 700;
  margin-bottom: 12px;
}

.hero-panel ul {
  margin: 0 0 16px;
  padding-left: 18px;
  color: var(--muted);
}

.panel-note {
  font-size: 14px;
  color: var(--accent-strong);
}

.calc-form {
  margin-top: 20px;
}

.calc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 340px);
  gap: 32px;
  align-items: start;
}

.steps {
  display: grid;
  gap: 24px;
}

.step-card {
  background: var(--card);
  border-radius: 24px;
  padding: 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  animation: fadeUp 0.6s ease both;
}

.step-header {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 20px;
}

.step-number {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(15, 109, 107, 0.12);
  color: var(--accent-strong);
  font-family: "Sora", sans-serif;
  font-weight: 700;
  display: grid;
  place-items: center;
}

.step-card h2 {
  font-family: "Sora", sans-serif;
  margin: 0 0 6px;
}

.step-card p {
  margin: 0;
  color: var(--muted);
}

.fields-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14px;
}

.field span {
  font-weight: 600;
  font-family: "Sora", sans-serif;
}

.field input,
.field select,
.field textarea {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  font-family: "Source Serif 4", serif;
  font-size: 15px;
  background: #fff;
}

.field textarea {
  resize: vertical;
  min-height: 90px;
}

.field.wide {
  grid-column: 1 / -1;
}

.field small {
  color: var(--muted);
  font-size: 12px;
}

.advanced-toggle {
  margin-top: 16px;
}

.toggle-advanced {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px dashed var(--border);
  background: rgba(15, 109, 107, 0.08);
  color: var(--accent-strong);
  font-family: "Sora", sans-serif;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.toggle-advanced:hover {
  background: rgba(15, 109, 107, 0.16);
}

.advanced-block {
  margin-top: 16px;
  padding: 16px;
  border-radius: 18px;
  border: 1px dashed var(--border);
  background: rgba(255, 255, 255, 0.7);
}

.advanced-block[hidden] {
  display: none;
}

#advanced-linear {
  padding: 0;
  border: none;
  background: transparent;
}

.toggle-row {
  margin-top: 16px;
}

.switch {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 600;
}

.switch input {
  display: none;
}

.slider {
  width: 44px;
  height: 24px;
  border-radius: 999px;
  background: rgba(15, 109, 107, 0.2);
  position: relative;
  transition: background 0.2s ease;
}

.slider::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 4px;
  width: 18px;
  height: 18px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.2s ease;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
}

.switch input:checked + .slider {
  background: var(--accent);
}

.switch input:checked + .slider::after {
  transform: translateX(18px);
}

.switch-label {
  color: var(--accent-strong);
}

.hint {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.toggle-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.6);
}

.checkbox input {
  width: 18px;
  height: 18px;
}

.summary-card {
  position: sticky;
  top: 100px;
  background: #101a1a;
  color: #fff;
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 30px 60px rgba(12, 18, 20, 0.3);
  display: grid;
  gap: 18px;
}

.summary-card h3 {
  margin: 0;
  font-family: "Sora", sans-serif;
}

.summary-card p {
  margin: 6px 0 0;
  color: rgba(255, 255, 255, 0.7);
}

.result-badge {
  font-family: "Sora", sans-serif;
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(120deg, #147c7a, #2b2b2b);
  padding: 14px 18px;
  border-radius: 18px;
  text-align: center;
}

.result-list {
  display: grid;
  gap: 10px;
  font-size: 14px;
}

.result-group {
  display: grid;
  gap: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.result-group:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.result-row strong {
  font-family: "Sora", sans-serif;
}

.summary-actions {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.summary-actions-full {
  grid-template-columns: 1fr;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: 999px;
  text-decoration: none;
  font-family: "Sora", sans-serif;
  font-weight: 600;
  border: none;
  cursor: pointer;
}

.button.primary {
  background: var(--accent-warm);
  color: #111;
  width: 100%;
}

.button.ghost {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.result-placeholder {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}

.small-note {
  font-size: 12px;
  color: var(--muted);
}

.summary-card .small-note {
  color: rgba(255, 255, 255, 0.6);
}

.field-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.field-actions .button.ghost {
  background: #fff;
  color: var(--accent-strong);
  border: 1px solid var(--border);
}

.field-actions .button.ghost:hover {
  background: rgba(15, 109, 107, 0.08);
}

.button.small {
  padding: 8px 12px;
  font-size: 12px;
}

.conditional[hidden] {
  display: none;
}

.linear-group,
.impact-group {
  margin-top: 20px;
  padding: 18px;
  border-radius: 16px;
  border: 1px dashed var(--border);
  background: rgba(255, 255, 255, 0.6);
}

.linear-group h3,
.impact-group h3 {
  margin-top: 0;
  font-family: "Sora", sans-serif;
}

.section-title {
  margin: 60px 0 20px;
}

.section-title h2 {
  font-family: "Sora", sans-serif;
  margin: 0 0 6px;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.card {
  background: var(--card);
  border-radius: 18px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.report-preview {
  margin-top: 40px;
}

.steps-log {
  display: grid;
  gap: 12px;
}

.normative-list {
  display: grid;
  gap: 6px;
}

.normative-section {
  margin-top: 8px;
}

.normative-item {
  display: grid;
  gap: 4px;
}

.normative-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: flex-start;
  gap: 6px;
}

.normative-values {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 11px;
  color: var(--muted);
  margin-left: 12px;
  width: 100%;
}

.normative-values .percent {
  margin-left: auto;
  text-align: right;
}

.normative-bar {
  height: 4px;
  margin-left: 12px;
  border-radius: 999px;
  background: rgba(15, 109, 107, 0.12);
  overflow: hidden;
}

.normative-bar-fill {
  display: block;
  height: 100%;
  border-radius: inherit;
}

.normative-bar-fill.low {
  background: #25a55f;
}

.normative-bar-fill.mid {
  background: #f0b429;
}

.normative-bar-fill.high {
  background: #e15c4f;
}

.summary-card .normative-section {
  margin-top: 2px;
}

.summary-card .normative-values {
  color: rgba(255, 255, 255, 0.7);
}

.summary-card .normative-bar {
  background: rgba(255, 255, 255, 0.16);
}

.log-section {
  font-family: "Sora", sans-serif;
  font-weight: 700;
  margin-top: 18px;
}

.log-step {
  background: var(--card);
  border-radius: 16px;
  padding: 16px;
  border: 1px solid var(--border);
}

.log-title {
  font-family: "Sora", sans-serif;
  font-weight: 600;
  margin-bottom: 6px;
}

.log-formula {
  font-size: 14px;
  color: var(--accent-strong);
}

.log-defs {
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted);
}

.log-detail {
  color: var(--muted);
  font-size: 14px;
}

.empty-state {
  padding: 16px;
  border-radius: 16px;
  border: 1px dashed var(--border);
  color: var(--muted);
}

.site-footer {
  padding: 40px 6vw;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  gap: 24px;
  background: #fff;
}

.footer-title {
  font-family: "Sora", sans-serif;
  font-weight: 700;
}

.footer-note {
  color: var(--muted);
  max-width: 360px;
}

.footer-meta {
  color: var(--muted);
  font-size: 13px;
  display: grid;
  gap: 6px;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .services-hero {
    grid-template-columns: 1fr;
  }

  .calc-layout {
    grid-template-columns: 1fr;
  }

  .summary-card {
    position: static;
  }

  .site-header {
    flex-direction: column;
    gap: 16px;
  }
}

@media (max-width: 720px) {
  .main-nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav-panel {
    position: static;
    width: 100%;
    max-width: none;
    box-shadow: none;
  }

  .summary-actions {
    grid-template-columns: 1fr;
  }

  .hero-badges {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}