:root {
  --primary-yellow: #FFD400;
  --primary-white: #FFFFFF;
  --secondary-red: #E31B23;
  --dark-text: #1F1F1F;
  --soft-gray: #F7F7F7;
  --border-color: #E5E5E5;
  --success-color: #16A34A;
  --warning-color: #F59E0B;
  --muted-text: #5F6368;
  --shadow: 0 14px 40px rgba(31, 31, 31, 0.08);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  color: var(--dark-text);
  background: var(--primary-white);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3,
h4,
p,
li,
dt,
dd,
span,
strong,
button,
a {
  overflow-wrap: break-word;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.container {
  width: calc(100% - 40px);
  max-width: 1120px;
  margin: 0 auto;
}

.section {
  padding: 88px 0;
}

.section-soft {
  background: var(--soft-gray);
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 14px;
  border-radius: var(--radius);
  color: var(--dark-text);
  background: var(--primary-yellow);
  transform: translateY(-140%);
  transition: transform 0.2s ease;
}

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  color: var(--secondary-red);
  font-size: 0.83rem;
  font-weight: 700;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 4px;
  border-radius: 4px;
  background: var(--primary-yellow);
}

.section-header {
  max-width: 740px;
  margin: 0 auto 36px;
  text-align: center;
}

.section-header.align-left {
  margin-right: 0;
  margin-left: 0;
  text-align: left;
}

.section-header h2,
.contact-section h2,
.footer h2 {
  margin: 0 0 12px;
  font-size: 2.2rem;
  line-height: 1.2;
}

.section-header p,
.hero-copy p,
.article-section p,
.footer p,
.contact-section address {
  color: var(--muted-text);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 700;
  line-height: 1.1;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.btn-primary {
  color: var(--dark-text);
  background: var(--primary-yellow);
  border-color: var(--primary-yellow);
}

.btn-secondary {
  color: var(--primary-white);
  background: var(--secondary-red);
  border-color: var(--secondary-red);
}

.btn-outline {
  color: var(--dark-text);
  background: var(--primary-white);
  border-color: var(--border-color);
}

.btn-sm {
  min-height: 38px;
  padding: 9px 14px;
  font-size: 0.93rem;
}

.btn-full {
  width: 100%;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(229, 229, 229, 0.9);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.header-container {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 18px;
  align-items: center;
  min-height: 78px;
}

.brand {
  display: inline-flex;
  align-items: center;
}

.brand img {
  width: 156px;
  height: auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.nav a {
  padding: 9px 10px;
  border-radius: var(--radius);
  color: var(--muted-text);
  font-size: 0.92rem;
  font-weight: 700;
}

.nav a:hover,
.nav a:focus-visible,
.nav a.active {
  color: var(--dark-text);
  background: var(--soft-gray);
}

.header-actions {
  display: flex;
  gap: 8px;
}

.hamburger {
  display: none;
  justify-self: end;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--primary-white);
}

.hamburger span {
  display: block;
  width: 19px;
  height: 2px;
  margin: 5px auto;
  border-radius: 2px;
  background: var(--dark-text);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.hamburger.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.hamburger.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hero-section {
  position: relative;
  overflow: hidden;
  padding-top: 56px;
  padding-bottom: 44px;
  background:
    linear-gradient(110deg, rgba(255, 212, 0, 0.14), rgba(255, 255, 255, 0) 52%),
    var(--primary-white);
}

.rtp-section {
  padding-top: 64px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.93fr) minmax(420px, 1.07fr);
  gap: 44px;
  align-items: center;
}

.hero-copy h1 {
  margin: 0 0 18px;
  font-size: 3rem;
  line-height: 1.1;
  word-break: normal;
}

.hero-copy p {
  margin: 0 0 22px;
  font-size: 1.08rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.hero-badges span {
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--primary-white);
  color: var(--dark-text);
  font-size: 0.9rem;
  font-weight: 700;
}

.hero-actions,
.calculator-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-media {
  margin: 0;
}

.hero-copy,
.hero-media,
.pattern-grid > *,
.calculator-grid > *,
.contact-grid > *,
.section-header,
.article-section article,
.rtp-card,
.feature-card,
.profile-card,
.testimonial-card {
  min-width: 0;
}

.hero-media img {
  width: 100%;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-media figcaption {
  margin-top: 10px;
  color: var(--muted-text);
  font-size: 0.88rem;
}

.rtp-layout,
.feature-grid,
.profile-grid,
.testimonial-grid {
  display: grid;
  gap: 18px;
}

.rtp-layout {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.rtp-card,
.pattern-card,
.calculator-form,
.feature-card,
.profile-card,
.testimonial-card,
.map-wrap {
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--primary-white);
  box-shadow: 0 10px 28px rgba(31, 31, 31, 0.05);
}

.rtp-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 18px;
}

.rtp-card-header,
.pattern-card-top {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  justify-content: space-between;
}

.rtp-card h3,
.pattern-card h3,
.feature-card h3,
.profile-card h3,
.testimonial-card h3 {
  margin: 0;
  line-height: 1.25;
}

.rtp-card p {
  margin: 10px 0 16px;
  color: var(--muted-text);
}

.status {
  flex: 0 0 auto;
  padding: 5px 9px;
  border-radius: var(--radius);
  font-size: 0.76rem;
  font-weight: 700;
}

.status-green {
  color: #0F6B33;
  background: rgba(22, 163, 74, 0.12);
}

.status-yellow {
  color: #805100;
  background: rgba(245, 158, 11, 0.16);
}

.status-red {
  color: #A11218;
  background: rgba(227, 27, 35, 0.12);
}

.rtp-meter {
  overflow: hidden;
  height: 10px;
  margin-bottom: 16px;
  border-radius: 10px;
  background: var(--soft-gray);
}

.rtp-meter span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--primary-yellow), var(--success-color));
  transition: width 0.9s ease;
}

.rtp-card dl,
.pattern-meta {
  display: grid;
  gap: 10px;
  margin: 0 0 18px;
}

.rtp-card dl div,
.pattern-meta div,
.result-panel div {
  display: flex;
  justify-content: space-between;
  gap: 14px;
}

.rtp-card dt,
.pattern-meta dt,
.result-panel span {
  color: var(--muted-text);
}

.rtp-card dd,
.pattern-meta dd {
  margin: 0;
  font-weight: 700;
}

.section-note {
  margin: 18px 0 0;
  color: var(--muted-text);
  font-size: 0.94rem;
}

.pattern-grid,
.calculator-grid,
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 38px;
  align-items: center;
}

.section-visual {
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--primary-white);
  box-shadow: var(--shadow);
}

.pattern-card {
  padding: 24px;
}

.pattern-card h4 {
  margin: 24px 0 8px;
  font-size: 1.1rem;
}

.check-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 28px;
}

.check-list li::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 0;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--primary-yellow);
  box-shadow: inset 0 0 0 4px var(--primary-white);
  border: 1px solid var(--dark-text);
}

.warning-box {
  margin: 22px 0 0;
  padding: 14px;
  border-left: 4px solid var(--warning-color);
  border-radius: var(--radius);
  color: var(--dark-text);
  background: #FFF7E6;
}

.calculator-form {
  padding: 24px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.form-grid label {
  display: grid;
  gap: 7px;
  color: var(--dark-text);
  font-weight: 700;
}

.form-grid label:last-child {
  grid-column: 1 / -1;
}

.form-grid input {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--dark-text);
  background: var(--primary-white);
  outline: none;
}

.form-grid input:focus {
  border-color: var(--primary-yellow);
  box-shadow: 0 0 0 3px rgba(255, 212, 0, 0.25);
}

.form-grid input.input-error {
  border-color: var(--secondary-red);
  box-shadow: 0 0 0 3px rgba(227, 27, 35, 0.14);
}

.calculator-actions {
  margin: 20px 0;
}

.result-panel {
  display: grid;
  gap: 12px;
  padding: 18px;
  border-radius: var(--radius);
  background: var(--soft-gray);
}

.result-panel strong {
  text-align: right;
}

.result-panel .positive {
  color: var(--success-color);
}

.result-panel .negative {
  color: var(--secondary-red);
}

.article-wrap {
  max-width: 900px;
}

.article-section article {
  padding: 34px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--primary-white);
}

.article-section h2 {
  margin: 0 0 10px;
  font-size: 2.2rem;
  line-height: 1.2;
}

.article-section h3 {
  margin: 0 0 24px;
  font-size: 1.45rem;
  line-height: 1.35;
}

.article-section h4 {
  margin: 28px 0 8px;
  font-size: 1.2rem;
}

.article-section p {
  margin: 0 0 14px;
}

.feature-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-card {
  min-height: 142px;
  padding: 20px;
}

.feature-card span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 22px;
  border-radius: var(--radius);
  color: var(--dark-text);
  background: var(--primary-yellow);
  font-weight: 800;
}

.feature-card h3 {
  font-size: 1.05rem;
}

.profile-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.profile-card {
  padding: 20px;
}

.profile-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  background: var(--soft-gray);
}

.profile-card h3 {
  margin-top: 18px;
}

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

.profile-card .role {
  margin: 6px 0 10px;
  color: var(--secondary-red);
  font-weight: 700;
}

.social-links {
  display: flex;
  gap: 8px;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--dark-text);
  background: var(--primary-white);
  font-size: 0.82rem;
  font-weight: 800;
}

.testimonial-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.testimonial-card {
  padding: 20px;
}

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

.rating {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 6px 10px;
  border-radius: var(--radius);
  color: var(--dark-text);
  background: var(--primary-yellow);
  font-weight: 800;
}

.contact-section address {
  margin: 18px 0 22px;
  font-style: normal;
}

.map-wrap {
  overflow: hidden;
}

.map-wrap iframe {
  display: block;
  width: 100%;
}

.faq-wrap {
  max-width: 900px;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  overflow: hidden;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--primary-white);
}

.faq-item button {
  position: relative;
  width: 100%;
  min-height: 58px;
  padding: 17px 54px 17px 18px;
  border: 0;
  color: var(--dark-text);
  background: var(--primary-white);
  text-align: left;
  font-weight: 800;
}

.faq-item button::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 18px;
  width: 28px;
  height: 28px;
  border-radius: var(--radius);
  background: var(--primary-yellow);
  transform: translateY(-50%);
  text-align: center;
  line-height: 28px;
}

.faq-item.is-open button::after {
  content: "-";
}

.faq-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}

.faq-panel p {
  margin: 0;
  padding: 0 18px 18px;
  color: var(--muted-text);
}

.footer {
  color: var(--primary-white);
  background: var(--dark-text);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.85fr 1fr 0.9fr;
  gap: 28px;
  padding: 54px 0 36px;
}

.footer img {
  margin-bottom: 16px;
  filter: drop-shadow(0 8px 14px rgba(0, 0, 0, 0.22));
}

.footer p,
.footer a {
  color: rgba(255, 255, 255, 0.78);
}

.footer a {
  display: block;
  margin-bottom: 9px;
}

.footer .btn {
  color: var(--dark-text);
}

.footer .btn-outline {
  color: var(--primary-white);
  background: transparent;
  border-color: rgba(255, 255, 255, 0.28);
}

.footer h2 {
  color: var(--primary-white);
  font-size: 1.05rem;
}

.footer-disclaimer {
  padding: 12px;
  border-radius: var(--radius);
  background: rgba(255, 212, 0, 0.1);
}

.footer-bottom {
  padding: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  text-align: center;
}

.footer-bottom p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
}

.back-to-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 90;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--dark-text);
  background: var(--primary-yellow);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1199px) {
  .rtp-layout,
  .testimonial-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 991px) {
  .header-container {
    grid-template-columns: auto 1fr auto;
  }

  .nav {
    position: fixed;
    top: 78px;
    right: 0;
    left: 0;
    display: grid;
    justify-content: stretch;
    gap: 0;
    padding: 14px 20px 22px;
    border-bottom: 1px solid var(--border-color);
    background: var(--primary-white);
    box-shadow: var(--shadow);
    transform: translateY(-130%);
    visibility: hidden;
    transition: transform 0.25s ease, visibility 0.25s ease;
  }

  .nav.is-open {
    transform: translateY(0);
    visibility: visible;
  }

  .nav a {
    padding: 13px 10px;
  }

  .header-actions {
    display: none;
  }

  .hamburger {
    position: absolute;
    top: 50%;
    right: 0;
    z-index: 2;
    display: inline-block;
    grid-column: 3;
    transform: translateY(-50%);
  }

  .header-container {
    position: relative;
  }

  .hero-grid,
  .pattern-grid,
  .calculator-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy h1 {
    font-size: 2.35rem;
  }

  .profile-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 767px) {
  .container {
    width: calc(100% - 28px);
    max-width: 1120px;
  }

  .section {
    padding: 64px 0;
  }

  .header-container {
    position: relative;
    min-height: 68px;
  }

  .brand img {
    width: 136px;
  }

  .nav {
    top: 68px;
  }

  .hero-section {
    padding-top: 42px;
    padding-bottom: 38px;
  }

  .hero-copy h1 {
    display: block;
    width: calc(100vw - 28px);
    max-width: calc(100vw - 28px);
    font-size: 1.55rem;
    line-height: 1.2;
    overflow-wrap: anywhere;
    white-space: normal;
    word-break: break-word;
  }

  .hero-copy,
  .hero-copy p,
  .hero-badges,
  .hero-actions,
  .hero-media {
    width: calc(100vw - 28px);
    max-width: calc(100vw - 28px);
  }

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

  .hero-badges span {
    min-width: 0;
  }

  .section-header h2,
  .contact-section h2,
  .article-section h2 {
    font-size: 1.8rem;
  }

  .rtp-layout,
  .feature-grid,
  .profile-grid,
  .testimonial-grid {
    grid-template-columns: 1fr;
  }

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

  .form-grid label:last-child {
    grid-column: auto;
  }

  .article-section article,
  .calculator-form,
  .pattern-card {
    padding: 20px;
  }

  .hero-actions,
  .calculator-actions,
  .contact-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-actions .btn,
  .calculator-actions .btn,
  .contact-actions .btn {
    width: 100%;
  }

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
    animation: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}