:root {
  --ink: #123448;
  --ink-soft: #476477;
  --paper: #fbfdf7;
  --white: #ffffff;
  --green: #0b865d;
  --green-deep: #087b59;
  --lime: #d8f03a;
  --sky: #81dbef;
  --blue: #1672bd;
  --orange: #cf3f1c;
  --yellow: #ffd845;
  --line: #dbe8e4;
  --shadow: 0 22px 54px rgba(18, 52, 72, 0.13);
  --radius-lg: 34px;
  --radius-md: 22px;
  --shell: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "YuGothic", Meiryo, sans-serif;
  font-feature-settings: "palt";
  line-height: 1.7;
}

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

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

.shell {
  width: min(calc(100% - 40px), var(--shell));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 8px;
  left: 8px;
  padding: 10px 16px;
  color: var(--white);
  background: var(--ink);
  border-radius: 10px;
  transform: translateY(-150%);
}

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

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  background: rgba(251, 253, 247, 0.9);
  border-bottom: 1px solid rgba(18, 52, 72, 0.08);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  min-height: 78px;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  flex-shrink: 0;
  align-items: baseline;
  gap: 8px;
  font-weight: 900;
  letter-spacing: -0.04em;
}

.brand-hop {
  display: inline-block;
  padding: 3px 8px 2px;
  color: var(--ink);
  background: var(--lime);
  border: 2px solid var(--ink);
  border-radius: 12px 12px 12px 3px;
  box-shadow: 3px 4px 0 var(--ink);
  font-family: Arial, sans-serif;
  font-size: 0.9rem;
  letter-spacing: -0.04em;
  transform: rotate(-4deg);
}

.brand-name {
  font-size: 1.24rem;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-left: auto;
  color: var(--ink-soft);
  font-size: 0.88rem;
  font-weight: 800;
}

.desktop-nav a {
  position: relative;
}

.desktop-nav a::after {
  position: absolute;
  right: 0;
  bottom: -7px;
  left: 0;
  height: 3px;
  content: "";
  background: var(--green);
  border-radius: 99px;
  transform: scaleX(0);
  transition: transform 180ms ease;
}

.desktop-nav a:hover::after,
.desktop-nav a:focus-visible::after {
  transform: scaleX(1);
}

.header-call {
  display: flex;
  min-width: 195px;
  padding: 8px 16px;
  color: var(--white);
  background: var(--ink);
  border-radius: 18px;
  flex-direction: column;
  align-items: center;
  line-height: 1.2;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.header-call:hover,
.header-call:focus-visible {
  box-shadow: 0 8px 0 rgba(25, 169, 116, 0.3);
  transform: translateY(-3px);
}

.header-call span {
  font-size: 0.7rem;
  font-weight: 700;
}

.header-call strong {
  font-family: Arial, sans-serif;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 34px;
  background:
    radial-gradient(circle at 82% 18%, rgba(129, 219, 239, 0.5), transparent 20%),
    radial-gradient(circle at 16% 92%, rgba(216, 240, 58, 0.35), transparent 23%),
    var(--paper);
}

.hero::before {
  position: absolute;
  top: 62px;
  left: 50%;
  color: rgba(18, 52, 72, 0.035);
  content: "HOP!";
  font-family: Arial Black, Arial, sans-serif;
  font-size: clamp(10rem, 28vw, 25rem);
  font-weight: 900;
  letter-spacing: -0.09em;
  line-height: 0.8;
  pointer-events: none;
  transform: translateX(-50%);
  white-space: nowrap;
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(400px, 0.95fr);
  align-items: center;
  gap: 54px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green-deep);
  font-family: Arial, "Yu Gothic", sans-serif;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.17em;
}

.eyebrow span {
  display: inline-block;
  margin-right: 8px;
  padding: 4px 9px;
  color: var(--white);
  background: var(--green);
  border-radius: 999px;
  letter-spacing: 0.05em;
}

.hero h1 {
  max-width: 690px;
  margin: 0;
  font-size: clamp(2.45rem, 5.3vw, 4.9rem);
  font-weight: 900;
  letter-spacing: -0.075em;
  line-height: 1.12;
}

.hop-word {
  position: relative;
  display: inline-block;
  z-index: 1;
  color: var(--green-deep);
  transform: translateY(-8px) rotate(-3deg);
}

.hop-word::after {
  position: absolute;
  z-index: -1;
  right: -10px;
  bottom: 2px;
  left: -8px;
  height: 0.34em;
  content: "";
  background: var(--lime);
  border-radius: 99px 60% 99px 50%;
}

.hero-lead {
  max-width: 650px;
  margin: 28px 0 0;
  color: var(--ink-soft);
  font-size: 1.06rem;
  font-weight: 650;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  align-items: stretch;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  min-height: 70px;
  padding: 12px 24px;
  border: 2px solid transparent;
  border-radius: 20px;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-4px);
}

.button-call {
  min-width: 270px;
  color: var(--white);
  background: var(--orange);
  box-shadow: 0 8px 0 #96270d;
  flex-direction: column;
  line-height: 1.12;
}

.button-call:hover,
.button-call:focus-visible {
  box-shadow: 0 12px 0 #96270d;
}

.button-call strong {
  font-family: Arial, sans-serif;
  font-size: 1.55rem;
  letter-spacing: 0.015em;
  white-space: nowrap;
}

.button-kicker {
  font-size: 0.72rem;
}

.button-web {
  color: var(--ink);
  background: var(--white);
  border-color: var(--ink);
  box-shadow: 0 8px 0 var(--ink);
}

.button-web:hover,
.button-web:focus-visible {
  background: var(--lime);
  box-shadow: 0 12px 0 var(--ink);
}

.contact-note {
  margin: 17px 0 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
  font-weight: 700;
}

.hero-visual {
  position: relative;
  min-height: 470px;
}

.aircon-card {
  position: absolute;
  z-index: 3;
  top: 75px;
  right: 4%;
  width: min(100%, 430px);
  padding: 30px 36px 24px;
  background: linear-gradient(145deg, #fff, #ecf4f3);
  border: 4px solid var(--ink);
  border-radius: 35px 35px 48px 48px;
  box-shadow: 14px 18px 0 var(--sky), var(--shadow);
  animation: hero-hop 3.2s ease-in-out infinite;
}

.aircon-card::before {
  position: absolute;
  top: 16px;
  right: 28px;
  width: 8px;
  height: 8px;
  content: "";
  background: var(--green);
  border-radius: 50%;
  box-shadow: 14px 0 0 var(--yellow);
}

.aircon-face {
  display: flex;
  width: 100px;
  height: 42px;
  margin: 26px auto 20px;
  align-items: flex-start;
  justify-content: space-between;
}

.aircon-face span {
  width: 8px;
  height: 13px;
  background: var(--ink);
  border-radius: 99px;
}

.aircon-face i {
  position: absolute;
  top: 78px;
  left: 50%;
  width: 60px;
  height: 29px;
  border-bottom: 5px solid var(--orange);
  border-radius: 50%;
  transform: translateX(-50%);
}

.aircon-vent {
  height: 38px;
  background: repeating-linear-gradient(90deg, #8ba6af 0 3px, #d7e2e2 3px 12px);
  border: 4px solid var(--ink);
  border-radius: 8px 8px 20px 20px;
  transform: perspective(120px) rotateX(-10deg);
}

.aircon-card p {
  margin: 17px 0 0;
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: -0.06em;
  text-align: center;
}

.aircon-light {
  position: absolute;
  top: -28px;
  left: 44px;
  width: 82px;
  height: 45px;
  background: var(--lime);
  border: 4px solid var(--ink);
  border-radius: 50% 50% 48% 48%;
  transform: rotate(-8deg);
}

.aircon-light::after {
  position: absolute;
  right: -25px;
  bottom: -17px;
  width: 26px;
  height: 30px;
  content: "";
  background: var(--lime);
  border-right: 4px solid var(--ink);
  border-bottom: 4px solid var(--ink);
  clip-path: polygon(0 0, 100% 38%, 16% 100%);
  transform: rotate(22deg);
}

.hop-shadow {
  position: absolute;
  right: 12%;
  bottom: 38px;
  width: 300px;
  height: 35px;
  background: rgba(18, 52, 72, 0.14);
  border-radius: 50%;
  filter: blur(2px);
  animation: shadow-pulse 3.2s ease-in-out infinite;
}

.jump-label {
  position: absolute;
  z-index: 5;
  margin: 0;
  padding: 7px 15px;
  color: var(--ink);
  background: var(--white);
  border: 3px solid var(--ink);
  border-radius: 999px;
  box-shadow: 4px 5px 0 var(--ink);
  font-size: 0.84rem;
  font-weight: 900;
}

.jump-label-one {
  top: 36px;
  right: 12%;
  transform: rotate(8deg);
}

.jump-label-two {
  top: 202px;
  left: -4%;
  color: var(--white);
  background: var(--blue);
  transform: rotate(-8deg);
}

.jump-label-three {
  right: -2%;
  bottom: 82px;
  background: var(--yellow);
  transform: rotate(5deg);
}

.route-dots {
  position: absolute;
  bottom: 48px;
  left: 8%;
  display: flex;
  gap: 17px;
  align-items: flex-end;
  transform: rotate(-12deg);
}

.route-dots i {
  width: 13px;
  height: 13px;
  background: var(--green);
  border-radius: 50%;
}

.route-dots i:nth-child(2) { transform: translateY(-18px); }
.route-dots i:nth-child(3) { transform: translateY(-42px); }
.route-dots i:nth-child(4) { transform: translateY(-76px); }

.hero-assurances {
  position: relative;
  z-index: 3;
  display: grid;
  margin-top: 48px;
  padding: 24px 30px;
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: 24px;
  box-shadow: 7px 8px 0 var(--ink);
  grid-template-columns: repeat(3, 1fr);
}

.hero-assurances div {
  display: flex;
  padding: 0 24px;
  border-right: 1px dashed #a9beb8;
  align-items: center;
  gap: 14px;
}

.hero-assurances div:last-child {
  border-right: 0;
}

.hero-assurances strong {
  color: var(--green-deep);
  font-size: 1.2rem;
  white-space: nowrap;
}

.hero-assurances span {
  color: var(--ink-soft);
  font-size: 0.9rem;
  font-weight: 700;
}

.hero-orbit {
  position: absolute;
  border: 2px dashed rgba(25, 169, 116, 0.24);
  border-radius: 50%;
}

.orbit-one {
  top: 120px;
  right: -180px;
  width: 620px;
  height: 620px;
}

.orbit-two {
  bottom: -280px;
  left: -250px;
  width: 500px;
  height: 500px;
}

.section {
  padding: 120px 0;
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 52px;
  text-align: center;
}

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

.section-heading h2,
.mid-cta h2,
.contact-panel h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 900;
  letter-spacing: -0.055em;
  line-height: 1.28;
}

.section-heading > p:last-child,
.contact-copy > p {
  margin: 20px 0 0;
  color: var(--ink-soft);
}

.trouble {
  background: var(--white);
}

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

.trouble-card {
  position: relative;
  min-height: 310px;
  padding: 28px 24px;
  overflow: hidden;
  background: var(--paper);
  border: 2px solid var(--ink);
  border-radius: var(--radius-md);
  box-shadow: 6px 7px 0 var(--ink);
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.trouble-card:nth-child(even) {
  transform: translateY(26px);
}

.trouble-card:hover {
  box-shadow: 10px 13px 0 var(--green);
  transform: translateY(-7px) rotate(-1deg);
}

.trouble-card:nth-child(even):hover {
  transform: translateY(17px) rotate(1deg);
}

.card-step {
  position: absolute;
  top: 16px;
  right: 18px;
  color: rgba(18, 52, 72, 0.22);
  font-family: Arial Black, Arial, sans-serif;
  font-size: 2rem;
}

.trouble-icon {
  display: grid;
  width: 64px;
  height: 64px;
  color: var(--ink);
  background: var(--lime);
  border: 3px solid var(--ink);
  border-radius: 50% 50% 45% 55%;
  box-shadow: 4px 5px 0 var(--ink);
  place-items: center;
  font-family: Arial Black, Arial, sans-serif;
  font-size: 1.65rem;
}

.trouble-card:nth-child(2) .trouble-icon { background: var(--sky); }
.trouble-card:nth-child(3) .trouble-icon { background: var(--yellow); }
.trouble-card:nth-child(4) .trouble-icon { color: var(--white); background: var(--green); }

.trouble-icon-wave {
  font-size: 1.1rem;
  letter-spacing: -0.18em;
}

.trouble-card h3 {
  margin: 28px 0 10px;
  font-size: 1.45rem;
}

.trouble-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.caution {
  max-width: 860px;
  margin: 72px auto 0;
  padding: 17px 22px;
  color: var(--ink-soft);
  background: #f0f7f4;
  border-radius: 14px;
  font-size: 0.82rem;
  text-align: center;
}

.strength {
  position: relative;
  overflow: hidden;
  background: var(--ink);
}

.strength::before {
  position: absolute;
  right: -110px;
  bottom: -150px;
  width: 480px;
  height: 480px;
  content: "";
  border: 2px dashed rgba(216, 240, 58, 0.22);
  border-radius: 50%;
}

.strength-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 85px;
}

.strength .section-heading h2,
.strength .section-heading > p:last-child {
  color: var(--white);
}

.strength .eyebrow {
  color: var(--lime);
}

.text-link {
  display: inline-flex;
  margin-top: 30px;
  color: var(--lime);
  border-bottom: 2px solid currentColor;
  align-items: center;
  gap: 16px;
  font-weight: 900;
}

.text-link span {
  font-size: 1.5rem;
}

.strength-steps {
  display: grid;
  gap: 18px;
}

.strength-card {
  display: grid;
  padding: 26px 30px;
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: 7px 8px 0 var(--green);
  grid-template-columns: 64px 1fr;
  gap: 22px;
}

.strength-card:nth-child(2) {
  transform: translateX(28px);
}

.strength-number {
  display: grid;
  width: 58px;
  height: 58px;
  background: var(--lime);
  border: 3px solid var(--ink);
  border-radius: 50%;
  place-items: center;
  font-family: Arial Black, Arial, sans-serif;
  font-size: 1.5rem;
}

.strength-card h3 {
  margin: 0;
  font-size: 1.35rem;
}

.strength-card p {
  margin: 5px 0 0;
  color: var(--ink-soft);
}

.flow {
  background: var(--paper);
}

.flow-list {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
  grid-template-columns: repeat(3, 1fr);
  gap: 44px;
}

.flow-list li {
  position: relative;
  padding: 36px 28px 32px;
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: 30px;
  box-shadow: 8px 10px 0 var(--sky);
  text-align: center;
}

.flow-list li:nth-child(2) {
  box-shadow: 8px 10px 0 var(--lime);
  transform: translateY(-18px);
}

.flow-list li:nth-child(3) {
  box-shadow: 8px 10px 0 var(--yellow);
}

.flow-list li:not(:last-child)::after {
  position: absolute;
  z-index: 3;
  top: 47%;
  right: -39px;
  content: "↗";
  font-family: Arial Black, Arial, sans-serif;
  font-size: 2.2rem;
  transform: rotate(12deg);
}

.flow-list li > span {
  color: var(--green-deep);
  font-family: Arial Black, Arial, sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.13em;
}

.flow-symbol {
  display: grid;
  width: 82px;
  height: 82px;
  margin: 18px auto;
  color: var(--white);
  background: var(--green);
  border: 3px solid var(--ink);
  border-radius: 50% 46% 55% 43%;
  box-shadow: 5px 6px 0 var(--ink);
  place-items: center;
  font-size: 2rem;
  font-weight: 900;
}

.flow-list h3 {
  margin: 0;
  font-size: 1.25rem;
}

.flow-list p {
  margin: 10px 0 0;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.mid-cta {
  padding: 72px 0;
  color: var(--white);
  background: var(--green);
}

.mid-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
}

.mid-cta p {
  margin: 0 0 7px;
  color: #d9fff2;
  font-weight: 700;
}

.mid-cta h2 {
  max-width: 680px;
  font-size: clamp(1.8rem, 3.3vw, 2.75rem);
}

.button-call-light {
  flex-shrink: 0;
  color: var(--ink);
  background: var(--white);
  box-shadow: 0 8px 0 var(--ink);
}

.button-call-light:hover,
.button-call-light:focus-visible {
  box-shadow: 0 12px 0 var(--ink);
}

.faq {
  background: var(--white);
}

.faq-grid {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 88px;
}

.faq-list {
  border-top: 2px solid var(--ink);
}

.faq-list details {
  border-bottom: 2px solid var(--ink);
}

.faq-list summary {
  position: relative;
  padding: 25px 56px 25px 48px;
  cursor: pointer;
  list-style: none;
  font-weight: 900;
}

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

.faq-list summary::before {
  position: absolute;
  top: 23px;
  left: 6px;
  color: var(--green-deep);
  content: "Q";
  font-family: Arial Black, Arial, sans-serif;
  font-size: 1.25rem;
}

.faq-list summary::after {
  position: absolute;
  top: 23px;
  right: 10px;
  display: grid;
  width: 28px;
  height: 28px;
  content: "+";
  background: var(--lime);
  border: 2px solid var(--ink);
  border-radius: 50%;
  place-items: center;
  line-height: 1;
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list details p {
  margin: 0;
  padding: 0 55px 26px 48px;
  color: var(--ink-soft);
}

.contact {
  background:
    linear-gradient(135deg, transparent 48%, rgba(25, 169, 116, 0.07) 48% 52%, transparent 52%) 0 0 / 28px 28px,
    var(--paper);
}

.contact-panel {
  display: grid;
  padding: 62px;
  color: var(--white);
  background: var(--ink);
  border-radius: var(--radius-lg);
  box-shadow: 14px 16px 0 var(--lime);
  grid-template-columns: 0.88fr 1.12fr;
  gap: 60px;
}

.contact-panel .eyebrow {
  color: var(--lime);
}

.contact-copy > p {
  color: #c9dbe2;
}

.contact-copy .shared-note {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 0.78rem;
}

.contact-actions {
  display: grid;
  gap: 14px;
}

.contact-phone,
.contact-web {
  display: flex;
  padding: 24px 28px;
  color: var(--ink);
  background: var(--white);
  border-radius: 20px;
  flex-direction: column;
  align-items: center;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.contact-phone {
  background: var(--lime);
  border: 3px solid var(--white);
}

.contact-phone:hover,
.contact-web:hover,
.contact-phone:focus-visible,
.contact-web:focus-visible {
  box-shadow: 0 8px 0 var(--green);
  transform: translateY(-4px);
}

.contact-phone > span,
.contact-phone small {
  font-weight: 800;
}

.contact-phone strong {
  font-family: Arial Black, Arial, sans-serif;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  line-height: 1.2;
  white-space: nowrap;
}

.contact-web strong {
  font-size: 1.15rem;
}

.contact-web span {
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.site-footer {
  padding: 68px 0 22px;
  color: var(--white);
  background: #0c2736;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr auto;
  gap: 52px;
}

.brand-footer {
  color: var(--white);
}

.footer-inner > div:first-child > p {
  margin: 18px 0 0;
  color: #91aab8;
  font-size: 0.85rem;
}

.footer-info {
  display: grid;
  margin: 0;
  gap: 12px;
}

.footer-info div {
  display: grid;
  grid-template-columns: 75px 1fr;
  gap: 12px;
}

.footer-info dt {
  color: #91aab8;
  font-size: 0.78rem;
}

.footer-info dd {
  margin: 0;
  font-size: 0.88rem;
  font-weight: 800;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.82rem;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--lime);
}

.copyright {
  width: min(calc(100% - 40px), var(--shell));
  margin: 52px auto 0;
  padding-top: 18px;
  color: #678292;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-family: Arial, sans-serif;
  font-size: 0.72rem;
  text-align: center;
}

.mobile-bar {
  display: none;
}

.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 560ms ease, transform 560ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

:focus-visible {
  outline: 4px solid var(--yellow);
  outline-offset: 4px;
}

@keyframes hero-hop {
  0%, 100% { transform: translateY(0) rotate(1deg); }
  48% { transform: translateY(-24px) rotate(-1deg); }
  58% { transform: translateY(-20px) rotate(-1deg); }
}

@keyframes shadow-pulse {
  0%, 100% { opacity: 0.9; transform: scaleX(1); }
  48%, 58% { opacity: 0.45; transform: scaleX(0.78); }
}

@media (max-width: 980px) {
  .desktop-nav { display: none; }
  .header-call { margin-left: auto; }
  .hero-grid { grid-template-columns: 1fr 0.82fr; gap: 20px; }
  .hero-visual { min-height: 400px; }
  .aircon-card { right: 0; padding-inline: 24px; }
  .trouble-grid { grid-template-columns: repeat(2, 1fr); }
  .trouble-card:nth-child(even) { transform: translateY(0); }
  .strength-grid { grid-template-columns: 1fr; gap: 52px; }
  .strength-card:nth-child(2) { transform: translateX(0); }
  .faq-grid { grid-template-columns: 1fr; gap: 42px; }
  .contact-panel { padding: 48px; grid-template-columns: 1fr; gap: 38px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-links { grid-column: 1 / -1; flex-direction: row; }
}

@media (max-width: 720px) {
  body { padding-bottom: 72px; }
  .shell { width: min(calc(100% - 28px), var(--shell)); }
  .site-header { position: relative; }
  .header-inner { min-height: 68px; }
  .brand-name { font-size: 1.08rem; }
  .header-call { display: none; }
  .hero { padding: 58px 0 28px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: clamp(2.55rem, 12vw, 4rem); }
  .hero-lead { margin-top: 22px; font-size: 0.98rem; }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .button-call { min-width: 0; }
  .hero-visual { min-height: 360px; margin-top: 28px; }
  .aircon-card { top: 58px; right: 8%; width: 84%; padding: 24px 24px 20px; }
  .aircon-card p { font-size: 1.55rem; }
  .hop-shadow { right: 20%; bottom: 30px; width: 60%; }
  .jump-label-one { right: 5%; }
  .jump-label-two { top: 165px; left: 0; }
  .jump-label-three { right: 0; bottom: 54px; }
  .hero-assurances { margin-top: 20px; padding: 6px 20px; grid-template-columns: 1fr; }
  .hero-assurances div { padding: 14px 0; border-right: 0; border-bottom: 1px dashed #a9beb8; }
  .hero-assurances div:last-child { border-bottom: 0; }
  .section { padding: 84px 0; }
  .section-heading { margin-bottom: 38px; text-align: left; }
  .section-heading h2, .contact-panel h2 { font-size: 2.1rem; }
  .trouble-grid { grid-template-columns: 1fr; }
  .trouble-card { min-height: 0; }
  .trouble-card:nth-child(even), .trouble-card:nth-child(even):hover { transform: none; }
  .caution { margin-top: 42px; text-align: left; }
  .strength-grid { gap: 38px; }
  .strength-card { padding: 22px 20px; grid-template-columns: 52px 1fr; gap: 14px; }
  .strength-number { width: 48px; height: 48px; }
  .flow-list { grid-template-columns: 1fr; gap: 28px; }
  .flow-list li:nth-child(2) { transform: translateY(0); }
  .flow-list li:not(:last-child)::after { top: auto; right: 50%; bottom: -31px; transform: translateX(50%) rotate(90deg); }
  .mid-cta { padding: 60px 0; }
  .mid-cta-inner { flex-direction: column; align-items: stretch; gap: 28px; }
  .faq-list summary { padding-left: 42px; }
  .faq-list summary::before { left: 2px; }
  .faq-list details p { padding-left: 42px; padding-right: 20px; }
  .contact-panel { padding: 34px 22px; border-radius: 26px; box-shadow: 8px 10px 0 var(--lime); }
  .contact-phone, .contact-web { padding-inline: 18px; }
  .footer-inner { grid-template-columns: 1fr; gap: 34px; }
  .footer-links { grid-column: auto; flex-direction: column; }
  .mobile-bar {
    position: fixed;
    z-index: 100;
    right: 0;
    bottom: 0;
    left: 0;
    display: grid;
    padding: 8px;
    background: rgba(255, 255, 255, 0.96);
    border-top: 1px solid var(--line);
    box-shadow: 0 -8px 24px rgba(18, 52, 72, 0.12);
    grid-template-columns: 0.72fr 1.28fr;
    gap: 7px;
  }
  .mobile-bar > a {
    display: grid;
    min-height: 55px;
    padding: 5px 10px;
    border: 2px solid var(--ink);
    border-radius: 13px;
    place-items: center;
    font-size: 0.84rem;
    font-weight: 900;
  }
  .mobile-bar .mobile-call {
    color: var(--white);
    background: var(--orange);
    border-color: var(--orange);
    line-height: 1.1;
    white-space: nowrap;
  }
  .mobile-call span { font-size: 0.68rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}