:root {
  --blue: #075ed6;
  --blue2: #0b92f0;
  --deep: #063377;
  --yellow: #ffe52f;
  --orange: #ff6b22;
  --pink: #ff6f91;
  --mint: #25c6a7;
  --ink: #102b4c;
  --muted: #465b73;
  --body-text: #162b44;
  --base: #f3fbff;
  --shadow: 0 20px 44px rgba(6, 51, 119, 0.16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html,
body {
  max-width: 100%;
  overflow-x: hidden;
}
body {
  margin: 0;
  color: var(--ink);
  background: white;
  font-family: "Noto Sans JP", "Yu Gothic", YuGothic, "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  font-feature-settings: "palt" 1;
  line-height: 1.68;
  font-size: 16px;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
p {
  color: var(--body-text);
  font-size: clamp(16px, 1.08vw, 18px);
  line-height: 1.86;
  font-weight: 800;
  text-wrap: pretty;
}
h1,
h2,
h3,
summary {
  text-wrap: balance;
}
img {
  image-rendering: auto;
}
a { color: inherit; text-decoration: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  gap: clamp(14px, 2vw, 28px);
  align-items: center;
  padding: 12px clamp(16px, 4vw, 56px);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 18px rgba(6, 51, 119, 0.08);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--deep);
  font-size: clamp(24px, 1.8vw, 30px);
  font-weight: 900;
}
.brand span {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 12px;
  background: var(--yellow);
  color: var(--blue);
  box-shadow: 0 8px 18px rgba(255, 229, 47, 0.45);
}
.header-nav {
  justify-self: center;
  display: flex;
  flex-wrap: wrap;
  gap: 6px clamp(12px, 1.35vw, 22px);
  align-items: center;
  justify-content: center;
  min-width: 0;
}
.header-nav a {
  position: relative;
  color: #173d73;
  font-size: clamp(14px, 0.95vw, 16px);
  font-weight: 900;
  line-height: 1.2;
  white-space: nowrap;
}
.header-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -7px;
  width: 0;
  height: 3px;
  border-radius: 999px;
  background: var(--yellow);
  transform: translateX(-50%);
  transition: width 180ms ease;
}
.header-nav a:hover::after,
.header-nav a:focus-visible::after {
  width: 100%;
}
.header-tel {
  color: var(--deep);
  font-size: clamp(15px, 1.05vw, 18px);
  font-weight: 900;
  white-space: nowrap;
}
.header-cta,
.hero-button,
.lead-form button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  border: 0;
  border-radius: 999px;
  background: var(--blue);
  color: white;
  font-weight: 900;
  box-shadow: 0 12px 0 #0345a4, 0 18px 28px rgba(7, 94, 214, 0.28);
  cursor: pointer;
}
.header-cta { padding: 11px 20px; font-size: clamp(14px, 1vw, 16px); box-shadow: 0 6px 0 #0345a4; }
.header-cta-short { display: none; }

.mobile-cta-bar {
  display: none;
}

.hero {
  position: relative;
  min-height: clamp(560px, 100vh, 760px);
  overflow: hidden;
  background: var(--base);
}
.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-inner {
  position: relative;
  width: min(1180px, calc(100% - 32px));
  min-height: clamp(480px, 88vh, 660px);
  margin: 0 auto;
  display: grid;
  place-items: center;
  padding-top: 42px;
}
.hero-copy {
  width: min(650px, 100%);
  margin-left: auto;
  margin-right: 250px;
  text-align: center;
}
.ribbon {
  position: relative;
  display: inline-block;
  padding: 10px 42px;
  background: var(--blue);
  color: white;
  font-size: clamp(18px, 2.4vw, 30px);
  font-weight: 900;
  transform: rotate(-2deg);
  box-shadow: 0 8px 0 #003f9d;
}
.ribbon::before,
.ribbon::after {
  content: "";
  position: absolute;
  top: 0;
  border-top: 28px solid var(--blue);
  border-bottom: 28px solid var(--blue);
}
.ribbon::before { left: -30px; border-left: 30px solid transparent; }
.ribbon::after { right: -30px; border-right: 30px solid transparent; }
.hero h1 {
  margin: 34px 0 8px;
  color: white;
  font-size: clamp(64px, 9vw, 118px);
  font-weight: 900;
  line-height: 0.98;
  text-shadow: 0 7px 0 rgba(6, 51, 119, 0.9), 0 12px 28px rgba(0, 0, 0, 0.28);
}
.hero h1 span {
  color: var(--yellow);
  font-size: 1.08em;
}
.hero-sub {
  margin: 0;
  color: white;
  font-size: clamp(18px, 2.5vw, 31px);
  font-weight: 900;
  text-shadow: 0 3px 10px rgba(6, 51, 119, 0.7);
}
.offer-cards {
  display: grid;
  grid-template-columns: 1.15fr 0.9fr 1.05fr;
  gap: 14px;
  margin: 26px auto 0;
  width: min(690px, 100%);
}
.offer-cards div {
  position: relative;
  min-height: 124px;
  overflow: hidden;
  display: grid;
  place-items: center;
  align-content: center;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.92);
  padding: 20px 12px 18px;
  text-align: center;
  box-shadow: 0 16px 30px rgba(3, 45, 96, 0.16), inset 0 0 0 1px rgba(255, 255, 255, 0.96);
}
.offer-cards div::before {
  content: "";
  position: absolute;
  inset: 7px;
  border: 2px solid rgba(7, 94, 214, 0.15);
  border-radius: 15px;
  pointer-events: none;
}
.offer-cards div::after {
  content: none;
}
.offer-cards span {
  position: relative;
  z-index: 1;
  display: inline-block;
  padding: 0 0 9px;
  color: var(--blue);
  font-size: 16px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.95);
}
.offer-cards span::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 46px;
  height: 3px;
  border-radius: 999px;
  background: var(--yellow);
  transform: translateX(-50%);
}
.offer-cards strong {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  margin-top: 12px;
  color: var(--deep);
  font-family: "Arial Black", "Yu Gothic", "Yu Gothic UI", "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: clamp(30px, 2.35vw, 38px);
  font-weight: 900;
  line-height: 0.96;
  letter-spacing: 0;
  white-space: nowrap;
  text-shadow: 0 2px 0 rgba(255, 255, 255, 0.92);
}
.offer-cards strong em {
  color: #e3342f;
  font-style: normal;
  font-size: 1.22em;
  text-shadow: 0 2px 0 #fff, 0 5px 0 rgba(130, 22, 18, 0.22), 0 10px 18px rgba(120, 21, 17, 0.2);
}
.hero-button {
  min-width: 280px;
  min-height: 64px;
  margin-top: 26px;
  font-size: 24px;
}
.campaign-space {
  padding: 24px 16px 22px;
  background: white;
}
.campaign-banner {
  display: grid;
  grid-template-columns: minmax(270px, auto) minmax(360px, 1fr);
  gap: clamp(18px, 3vw, 32px);
  align-items: center;
  width: min(1180px, 100%);
  margin: 0 auto;
  min-height: 150px;
  padding: 16px 0;
  border-top: 2px solid #d7e6f8;
  border-bottom: 2px solid #d7e6f8;
  border-radius: 0;
  background: transparent;
  color: var(--deep);
  box-shadow: none;
}
.campaign-banner strong {
  position: relative;
  color: var(--blue);
  font-size: clamp(28px, 4vw, 46px);
  font-weight: 900;
  line-height: 1.05;
  white-space: nowrap;
}
.campaign-banner strong::before {
  content: "\\";
  color: var(--yellow);
  margin-right: 12px;
}
.campaign-banner strong::after {
  content: "/";
  color: var(--yellow);
  margin-left: 12px;
}
.campaign-banner span {
  color: #26384e;
  font-size: 18px;
  font-weight: 900;
}
.campaign-image-link {
  display: block;
  justify-self: center;
  width: min(620px, 100%);
  border-radius: 6px;
  transition: transform 0.2s ease, filter 0.2s ease;
}
.campaign-image-link:hover,
.campaign-image-link:focus-visible {
  transform: translateY(-2px);
  filter: drop-shadow(0 10px 18px rgba(6, 51, 119, 0.14));
  outline: none;
}
.campaign-banner img {
  display: block;
  width: 100%;
  max-width: 620px;
  height: 150px;
  object-fit: contain;
  object-position: center;
  justify-self: center;
}

.section {
  padding: clamp(70px, 8vw, 104px) clamp(16px, 4vw, 56px);
}
.section-title {
  width: min(900px, 100%);
  margin: 0 auto 36px;
  text-align: center;
}
.section-title h2,
.recommend h2,
.contact-copy h2 {
  margin: 0;
  color: var(--deep);
  font-size: clamp(36px, 5.2vw, 62px);
  font-weight: 900;
  line-height: 1.16;
}
.section-title p,
.recommend p,
.contact-copy p {
  margin: 14px auto 0;
  max-width: 760px;
  color: var(--body-text);
  font-size: clamp(16px, 1.35vw, 18px);
  font-weight: 800;
  line-height: 1.82;
}
.worries {
  position: relative;
  overflow: visible;
  background: #081a34;
  color: white;
  padding-bottom: clamp(88px, 9vw, 122px);
}
.worries::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 64px;
  width: min(920px, 80%);
  height: 1px;
  transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.18);
}
.worries::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -56px;
  z-index: 2;
  width: 0;
  height: 0;
  transform: translateX(-50%);
  border-left: 72px solid transparent;
  border-right: 72px solid transparent;
  border-top: 58px solid #081a34;
}
.worries .section-title,
.worries .worry-grid {
  position: relative;
}
.worries .section-title {
  width: min(1180px, 100%);
}
.worries .section-title h2 {
  color: white;
  font-size: clamp(22px, 4.2vw, 58px);
  line-height: 1.05;
  white-space: nowrap;
}
.worries .section-title p {
  max-width: 860px;
  color: #d4e5f7;
  font-size: 19px;
  font-weight: 800;
}
.worries .worry-grid {
  gap: 22px;
}
.worries .worry-grid article {
  padding: 0 10px;
}
.worries .problem-tag {
  display: inline-flex;
  margin-bottom: 16px;
  padding: 7px 15px;
  border-radius: 999px;
  background: #ffe52f;
  color: #081a34;
  font-size: 15px;
  font-weight: 900;
  line-height: 1;
}
.worries .worry-grid h3 {
  color: #ffe52f;
  font-size: 25px;
  letter-spacing: 0;
  line-height: 1.35;
}
.worries .worry-grid p {
  color: #eef6ff;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.82;
}

.selected {
  background: white;
  color: var(--deep);
}
.flow { background: white; }
.faq { background: #eef7fc; }
.contact { background: #08213e; }
.selected .section-title h2 {
  display: inline-block;
  color: var(--deep);
  text-shadow: none;
}
.selected .section-title h2::after {
  content: "";
  display: block;
  width: 100%;
  height: 5px;
  margin: 16px auto 0;
  border-radius: 999px;
  background: var(--yellow);
}
.selected .section-title p {
  color: var(--body-text);
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 900;
}
.worry-grid,
.selected-grid,
.case-grid {
  width: min(1120px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}
.worry-grid article,
.selected-grid article,
.case-grid article,
.faq-list details {
  border: 0;
  border-radius: 24px;
  background: transparent;
  box-shadow: none;
}
.worry-grid article,
.selected-grid article {
  padding: 26px 10px;
}
.selected-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(14px, 1.8vw, 22px);
}
.selected-grid article {
  position: relative;
  min-height: 390px;
  padding: 16px 14px 22px;
  border-radius: 8px;
  background: white;
  box-shadow: 0 0 0 1px #e3edf7, 0 16px 34px rgba(23, 61, 115, 0.11);
}
.selected-grid article img {
  display: block;
  width: 100%;
  height: clamp(118px, 11vw, 150px);
  margin: 0 auto 18px;
  object-fit: contain;
  object-position: center;
  border-radius: 6px;
  background: #fff;
}
.selected-grid h3 {
  text-align: center;
  color: var(--blue);
  font-size: clamp(18px, 1.35vw, 21px);
}
.selected-grid p {
  color: var(--body-text);
  font-size: 16px;
  font-weight: 800;
  text-align: left;
}
.serviceArea {
  width: min(1180px, 100%);
  margin: clamp(36px, 5vw, 64px) auto 0;
  background: transparent;
  padding: clamp(28px, 4vw, 46px) 0 0;
  border-top: 1px solid #dceaf7;
  border-radius: 0;
  box-shadow: none;
}
.serviceAreaInner {
  align-items: start;
  display: grid;
  gap: 34px;
  grid-template-columns: minmax(520px, 1.1fr) minmax(390px, 0.9fr);
  margin: 0 auto;
  max-width: 1180px;
}
.mapPanel {
  background: transparent;
  box-shadow: none;
  min-height: 0;
  padding: 0;
  position: relative;
  text-align: center;
}
.japanMapImage {
  display: block;
  height: auto;
  margin: 0 auto;
  object-fit: contain;
  width: min(100%, 640px);
}
.areaList {
  padding-top: clamp(72px, 6vw, 104px);
}
.areaList h3 {
  margin: 0;
  color: #17147a;
  font-size: clamp(38px, 5vw, 58px);
  font-weight: 900;
  line-height: 1.05;
  text-align: left;
}
.areaList > p {
  color: var(--body-text);
  font-size: 17px;
  font-weight: 900;
  line-height: 1.9;
  margin: 14px 0 0;
}
.prefectureGroups {
  display: grid;
  gap: 6px 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 14px 0 10px;
}
.prefectureGroup {
  background: transparent;
  padding: 6px 8px;
}
.prefectureGroup h3 {
  color: #17147a;
  font-size: 14px;
  font-weight: 900;
  margin: 0 0 2px;
}
.prefectureGroup p {
  color: #26384a;
  font-size: 13px;
  font-weight: 800;
  line-height: 1.5;
  margin: 0;
}
.areaList small {
  color: #e11d2e;
  display: block;
  font-size: 14px;
  font-weight: 900;
  line-height: 1.7;
}
.worry-grid h3,
.selected-grid h3,
.case-grid h3,
.explain-text h2,
.explain-text h3 {
  margin: 0;
  color: var(--deep);
  font-size: 24px;
  font-weight: 900;
  line-height: 1.28;
}
.worry-grid p,
.selected-grid p,
.case-grid p,
.explain-text p {
  margin: 12px 0 0;
  color: var(--body-text);
  font-weight: 800;
  line-height: 1.78;
}

.recommend {
  position: relative;
  padding: clamp(86px, 9vw, 118px) 16px clamp(72px, 8vw, 104px);
  background: white;
  text-align: center;
}
.recommend-inner {
  width: min(960px, 100%);
  margin: 0 auto;
  position: relative;
}
.recommend h2 {
  color: var(--deep);
  text-shadow: none;
}
.recommend h2::after {
  content: none;
}
.breaker-mark {
  position: relative;
  display: inline-flex;
  gap: 0.01em;
  margin: 0 0.06em;
  color: #d72f27;
  font-size: 1.08em;
  text-shadow: 0 3px 0 rgba(119, 24, 20, 0.12);
  isolation: isolate;
}
.breaker-mark span {
  position: relative;
  display: inline-block;
}
.breaker-mark span::before {
  content: "・";
  position: absolute;
  left: 50%;
  top: -0.52em;
  color: var(--yellow);
  font-size: 0.34em;
  line-height: 1;
  text-shadow: none;
  transform: translateX(-50%);
}
.recommend p {
  color: var(--body-text);
  text-shadow: none;
}
.recommend p {
  font-size: 20px;
}

.about {
  background: white;
  padding-top: clamp(46px, 5vw, 66px);
}
.explain-layout {
  width: min(1100px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 34px;
  align-items: center;
}
.low-voltage-visual {
  position: relative;
  display: block;
  aspect-ratio: 1.53 / 1;
  min-height: 0;
  padding: 0;
  border-radius: 18px;
  background: transparent;
  box-shadow: none;
  overflow: hidden;
}
.low-voltage-visual img {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 14px;
  object-fit: cover;
  object-position: center bottom;
  box-shadow: 0 18px 38px rgba(6, 51, 119, 0.1);
}
.explain-text {
  padding: 0;
  border-radius: 0;
  background: transparent;
}
.saving-mechanism {
  width: min(1120px, 100%);
  margin: 38px auto 0;
  padding-top: 10px;
  text-align: center;
}
.saving-mechanism h3 {
  display: inline-block;
  margin: 0 0 30px;
  padding-bottom: 12px;
  color: var(--blue);
  font-size: clamp(32px, 4vw, 54px);
  font-weight: 900;
  line-height: 1.16;
  border-bottom: 8px solid var(--blue);
}
.mechanism-steps {
  display: grid;
  grid-template-columns: 1fr 46px 1fr 46px 1fr;
  gap: 16px;
  align-items: center;
}
.mechanism-steps article {
  min-height: auto;
  display: block;
  border-radius: 18px;
  background: #fff;
  padding: 0;
  overflow: hidden;
  box-shadow: 0 18px 38px rgba(1, 56, 122, 0.08);
}
.mechanism-steps article img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 953 / 1600;
  object-fit: cover;
}
.mechanism-copy {
  width: min(980px, 100%);
  margin: 34px auto 0;
  padding: 30px 0 0;
  border-top: 3px solid #d7e6f8;
  text-align: center;
}
.mechanism-copy h4 {
  margin: 0;
  color: var(--deep);
  font-size: clamp(26px, 3.2vw, 42px);
  font-weight: 900;
  line-height: 1.32;
}
.mechanism-copy p {
  margin: 16px auto 0;
  color: var(--body-text);
  font-size: clamp(16px, 1.6vw, 20px);
  font-weight: 800;
  line-height: 1.82;
  text-align: left;
}
.mechanism-campaign {
  min-height: clamp(640px, 52vw, 780px);
  display: grid;
  align-items: center;
  padding: clamp(70px, 8vw, 104px) clamp(16px, 4vw, 56px);
  background: #eef8ff;
}
.mechanism-campaign-inner {
  width: min(1240px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(360px, 0.75fr);
  gap: clamp(24px, 4vw, 52px);
  align-items: stretch;
}
.campaign-visual {
  display: grid;
  align-items: center;
  min-width: 0;
  overflow: visible;
}
.campaign-visual img {
  display: block;
  width: 100%;
  max-height: 430px;
  height: auto;
  border-radius: 0;
  object-fit: contain;
  object-position: center;
  mix-blend-mode: normal;
  filter: drop-shadow(0 18px 28px rgba(1, 56, 122, 0.16));
  box-shadow: none;
}
.campaign-form {
  display: grid;
  gap: 12px;
  padding: clamp(24px, 3vw, 34px);
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 24px 52px rgba(1, 56, 122, 0.14);
}
.campaign-form h2 {
  margin: 0;
  color: var(--deep);
  font-size: clamp(30px, 3vw, 42px);
  font-weight: 900;
  line-height: 1.18;
  text-align: center;
}
.campaign-form p {
  margin: 0 0 8px;
  color: var(--body-text);
  font-size: 15px;
  font-weight: 800;
  line-height: 1.6;
  text-align: center;
}
.campaign-form label {
  display: grid;
  gap: 7px;
  color: var(--deep);
  font-size: 14px;
  font-weight: 900;
  text-align: center;
}
.campaign-form input,
.campaign-form select {
  width: 100%;
  border: 0;
  border-radius: 12px;
  background: #eef7ff;
  padding: 13px 14px;
  color: var(--ink);
  font: inherit;
  font-weight: 800;
  outline: none;
  text-align: center;
}
.campaign-form input:focus,
.campaign-form select:focus {
  box-shadow: 0 0 0 4px rgba(7, 94, 214, 0.16);
}
.campaign-form button {
  min-height: 58px;
  margin-top: 8px;
  font-size: 20px;
  border-radius: 16px;
  background: #d9342b;
  color: #fff;
  box-shadow: 0 8px 0 #a91f19, 0 16px 28px rgba(217, 52, 43, 0.22);
}
.step-arrow {
  color: var(--blue);
  font-size: 72px;
  font-weight: 900;
}
.selected-grid article:nth-child(1),
.selected-grid article:nth-child(2),
.selected-grid article:nth-child(3),
.selected-grid article:nth-child(4) { background-color: white; }

.results {
  background-color: #f8fcff;
}
.results .section-title {
  width: min(1120px, 100%);
  margin-bottom: 56px;
}
.results .section-title h2 {
  display: inline-block;
  color: var(--deep);
  font-size: clamp(30px, 4vw, 46px);
}
.results .section-title h2::after {
  content: "";
  display: block;
  width: 100%;
  height: 6px;
  margin: 16px auto 0;
  border-radius: 999px;
  background: var(--blue);
}
.results .section-title p {
  max-width: 980px;
  color: var(--body-text);
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.82;
  text-align: center;
}
.case-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.case-img {
  height: 250px;
  background-image: url("./assets/case-collage.jpg");
  background-size: 200% 200%;
}
.case-img.manufacturing { background-position: left top; }
.case-img.workshop { background-position: right top; }
.case-img.restaurant { background-position: left bottom; }
.case-img.factory { background-position: right bottom; }
.case-carousel {
  position: relative;
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: 0 58px;
}
.case-viewport {
  width: 100%;
  margin: 0 auto;
  overflow: hidden;
}
.case-track {
  display: flex;
  gap: 28px;
  padding: 10px 16%;
  transition: transform 520ms cubic-bezier(0.22, 0.61, 0.36, 1);
  will-change: transform;
}
.case-nav {
  position: absolute;
  top: 50%;
  z-index: 3;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border: 0;
  border-radius: 50%;
  background: var(--blue);
  color: white;
  font-size: 26px;
  font-weight: 900;
  line-height: 1;
  transform: translateY(-50%);
  box-shadow: 0 8px 0 #0345a4, 0 14px 24px rgba(7, 94, 214, 0.22);
  cursor: pointer;
}
.case-nav.prev { left: 0; }
.case-nav.next { right: 0; }
.case-nav:focus-visible {
  outline: 4px solid var(--yellow);
  outline-offset: 4px;
}
.case-carousel.is-moving .case-track article {
  pointer-events: none;
}
.case-track article {
  flex: 0 0 68%;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: start;
  min-width: 0;
  padding: clamp(26px, 4vw, 38px);
  font-family: "Yu Gothic", "YuGothic", "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
  border-bottom: 0;
  border-radius: 14px;
  background: white;
  box-shadow: 0 22px 52px rgba(1, 56, 122, 0.13);
  opacity: 0.58;
  transform: scale(0.94);
  transition: opacity 320ms ease, transform 320ms ease, box-shadow 320ms ease;
}
.case-track article.is-active {
  opacity: 1;
  transform: scale(1);
  box-shadow: 0 26px 60px rgba(1, 56, 122, 0.18);
}
.case-track .case-img {
  width: 100%;
  height: clamp(210px, 24vw, 300px);
  border-radius: 10px;
  background-repeat: no-repeat;
  image-rendering: auto;
}
.case-track > article > h3 {
  margin: 0;
  color: var(--blue);
  font-size: clamp(30px, 3.4vw, 40px);
  font-weight: 900;
  line-height: 1.2;
  text-align: center;
}
.case-table {
  display: grid;
  gap: 0;
}
.case-table dl {
  display: grid;
  grid-template-columns: 138px 1fr;
  margin: 0;
  border-bottom: 2px solid white;
}
.case-table dt,
.case-table dd {
  min-height: 44px;
  display: flex;
  align-items: center;
  margin: 0;
  padding: 10px 14px;
  font-size: 17px;
  line-height: 1.55;
}
.case-table dt {
  justify-content: center;
  background: var(--blue);
  color: white;
  font-weight: 900;
}
.case-table dd {
  background: rgba(255, 255, 255, 0.86);
  color: var(--body-text);
  font-weight: 900;
}
.case-track article a {
  justify-self: center;
  color: var(--blue);
  font-size: 18px;
  font-weight: 900;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.flow-line {
  position: relative;
  width: min(1180px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
}
.flow-line article {
  position: relative;
  display: grid;
  align-content: start;
  min-height: 250px;
  padding: 52px 20px 24px;
  border-radius: 10px;
  background: #fff;
  color: var(--deep);
  box-shadow: 0 18px 38px rgba(1, 56, 122, 0.08);
}
.flow-line article:not(:last-child)::before {
  content: "";
  position: absolute;
  right: -16px;
  top: 50%;
  z-index: 2;
  width: 0;
  height: 0;
  border-top: 14px solid transparent;
  border-bottom: 14px solid transparent;
  border-left: 14px solid #d9342b;
  transform: translateY(-50%);
}
.flow-line article span {
  position: absolute;
  left: 50%;
  top: -30px;
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #d9342b;
  color: white;
  font-size: 24px;
  font-weight: 900;
  transform: translateX(-50%);
  box-shadow: 0 10px 0 #a91f19, 0 16px 24px rgba(217, 52, 43, 0.2);
}
.flow-line h3 {
  margin: 0;
  color: var(--deep);
  font-size: clamp(19px, 1.75vw, 24px);
  font-weight: 900;
  line-height: 1.25;
  text-align: center;
}
.flow-line p {
  margin: 26px 0 0;
  padding-top: 20px;
  border-top: 1px solid #d7e6f8;
  color: var(--body-text);
  font-size: 14px;
  font-weight: 800;
  line-height: 1.72;
}
.flow-note {
  width: min(720px, 100%);
  margin: 40px auto 0;
  text-align: center;
}
.flow-note p {
  margin: 0 0 20px;
  color: var(--deep);
  font-size: 20px;
  font-weight: 900;
  line-height: 1.6;
}
.flow-note a {
  display: inline-flex;
  min-width: min(560px, 100%);
  min-height: 78px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: #d9342b;
  color: #fff;
  font-size: 24px;
  font-weight: 900;
  box-shadow: 0 8px 0 #a91f19;
}

.faq {
  background: white;
}
.faq .section-title {
  margin-bottom: 30px;
}
.faq .section-title p {
  max-width: 620px;
}
.faq-list {
  width: min(1120px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
  align-items: start;
}
.faq-list details {
  position: relative;
  padding: 0;
  overflow: hidden;
  border-radius: 14px;
  background: #f4f9ff;
  box-shadow: inset 0 0 0 1px #dcecff;
}
.faq-list summary {
  position: relative;
  min-height: 74px;
  display: grid;
  grid-template-columns: 42px 1fr 28px;
  gap: 14px;
  align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  color: var(--deep);
  font-size: clamp(17px, 1.45vw, 20px);
  font-weight: 900;
  line-height: 1.45;
  list-style: none;
}
.faq-list summary::-webkit-details-marker {
  display: none;
}
.faq-list summary::before {
  content: "Q";
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--blue);
  color: white;
  font-size: 22px;
  font-weight: 900;
  box-shadow: 0 5px 0 #0345a4;
}
.faq-list summary::after {
  content: "+";
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: var(--blue);
  font-size: 28px;
  font-weight: 900;
  line-height: 1;
}
.faq-list details[open] summary::after {
  content: "-";
}
.faq-list p {
  margin: 0;
  padding: 0 22px 22px 76px;
  color: var(--body-text);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.78;
}

.contact {
  padding: clamp(76px, 9vw, 110px) clamp(16px, 4vw, 56px);
  background:
    linear-gradient(135deg, rgba(7, 94, 214, 0.16), transparent 34%),
    #062a5f;
}
.contact-copy {
  width: min(860px, 100%);
  margin: 0 auto 30px;
  text-align: center;
}
.contact-copy h2,
.contact-copy p {
  color: white;
}
.contact-copy p {
  font-size: clamp(17px, 1.4vw, 20px);
  font-weight: 800;
}
.lead-form {
  width: min(920px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding: 30px;
  border-radius: 30px;
  background: white;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.2);
}
.lead-form label {
  display: grid;
  gap: 8px;
  color: var(--deep);
  font-size: 15px;
  font-weight: 900;
  text-align: left;
}
.lead-form .wide,
.lead-form button {
  grid-column: 1 / -1;
}
.lead-form input,
.lead-form select,
.lead-form textarea {
  width: 100%;
  border: 0;
  border-radius: 14px;
  background: #eef7ff;
  padding: 14px 16px;
  color: var(--ink);
  font-family: "Noto Sans JP", "Yu Gothic", YuGothic, "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  font-size: 16px;
  font-weight: 700;
  outline: none;
  text-align: left;
}
.lead-form input:focus,
.lead-form select:focus,
.lead-form textarea:focus {
  box-shadow: 0 0 0 4px rgba(7, 94, 214, 0.16);
}
.lead-form button {
  min-height: 64px;
  font-size: 22px;
  border-radius: 18px;
  background: linear-gradient(180deg, #f04438 0%, #d92d20 100%);
  box-shadow: 0 9px 0 #a91d14, 0 18px 32px rgba(217, 45, 32, 0.28);
}

.site-footer {
  background: #061a33;
  color: white;
  padding: 34px clamp(16px, 4vw, 56px);
}

.footer-inner {
  width: min(1180px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: white;
  font-size: 24px;
  font-weight: 900;
}

.footer-brand span {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--yellow);
  color: var(--blue);
}

.footer-info {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 28px;
  margin: 0;
}

.footer-info div {
  display: grid;
  gap: 4px;
}

.footer-info dt {
  color: #9cc6ff;
  font-size: 13px;
  font-weight: 900;
}

.footer-info dd {
  margin: 0;
  color: #f4f8ff;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.7;
}

.footer-info a {
  text-decoration: underline;
  text-underline-offset: 4px;
}

@media (max-width: 1100px) {
  .site-header {
    grid-template-columns: auto 1fr auto;
  }
  .header-nav {
    grid-column: 1 / -1;
    order: 4;
    padding-top: 4px;
  }
  .hero-copy {
    margin-right: 120px;
  }
}

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }
  .brand {
    min-width: 0;
  }
  .header-tel {
    display: none;
  }
  .header-cta {
    justify-self: end;
  }
  .hero-inner {
    place-items: start center;
    min-height: clamp(560px, 92vh, 760px);
    padding-top: 76px;
  }
  .hero-copy {
    margin: 0;
  }
  .hero h1 {
    font-size: 64px;
  }
  .campaign-banner {
    grid-template-columns: 1fr;
    gap: 16px;
    text-align: center;
  }
  .campaign-banner strong {
    white-space: normal;
  }
  .campaign-banner img {
    width: min(620px, 100%);
    height: auto;
    max-height: 170px;
  }
  .campaign-image-link {
    width: min(620px, 100%);
  }
  .mechanism-campaign {
    min-height: auto;
  }
  .mechanism-campaign-inner {
    grid-template-columns: 1fr;
  }
  .campaign-visual img {
    max-height: none;
  }
  .offer-cards,
  .worry-grid,
  .selected-grid,
  .case-grid,
  .faq-list,
  .explain-layout,
  .lead-form {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    grid-template-columns: 1fr;
  }
  .footer-info {
    grid-template-columns: 1fr;
  }
  .serviceArea {
    padding: 30px 0 0;
  }
  .serviceAreaInner {
    grid-template-columns: 1fr;
  }
  .areaList {
    padding-top: 0;
  }
  .areaList h3 {
    text-align: center;
  }
  .selected-grid article {
    min-height: auto;
  }
  .selected-grid article img {
    height: clamp(150px, 28vw, 210px);
  }
  .case-carousel {
    padding: 0 0 72px;
  }
  .case-viewport {
    width: 100%;
  }
  .case-track {
    gap: 18px;
    padding: 10px 7%;
  }
  .case-track article {
    flex-basis: 86%;
    padding: 24px;
  }
  .case-nav {
    top: auto;
    bottom: 0;
    transform: none;
  }
  .case-nav.prev {
    left: calc(50% - 58px);
  }
  .case-nav.next {
    right: calc(50% - 58px);
  }
  .case-saving {
    white-space: normal;
    text-align: left;
  }
  .flow-line {
    grid-template-columns: 1fr;
    gap: 34px;
  }
  .flow-line article {
    min-height: auto;
    padding: 52px 24px 26px;
  }
  .flow-line article:not(:last-child)::before {
    right: auto;
    left: 50%;
    top: auto;
    bottom: -24px;
    border-left: 14px solid transparent;
    border-right: 14px solid transparent;
    border-top: 14px solid #d9342b;
    border-bottom: 0;
    transform: translateX(-50%);
  }
  .flow-line h3 {
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .case-track {
    transition: none;
  }
}

@media (min-width: 700px) and (max-width: 900px) {
  .selected-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .faq-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .faq-list summary {
    grid-template-columns: 36px 1fr 24px;
    gap: 10px;
    padding: 16px;
    font-size: 16px;
  }
  .faq-list summary::before {
    width: 36px;
    height: 36px;
    font-size: 19px;
  }
  .faq-list p {
    padding: 0 18px 20px 62px;
    font-size: 15px;
  }
}

@media (max-width: 560px) {
  .site-header {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 10px 12px 12px;
  }
  .brand {
    justify-self: center;
    font-size: 20px;
  }
  .brand span {
    width: 34px;
    height: 34px;
    border-radius: 10px;
  }
  .header-nav {
    grid-column: 1 / -1;
    justify-content: center;
    gap: 6px 8px;
    overflow-x: auto;
    width: 100%;
    padding: 3px 0 2px;
    scrollbar-width: none;
  }
  .header-nav::-webkit-scrollbar {
    display: none;
  }
  .header-nav a {
    flex: 0 0 auto;
    padding: 10px 14px;
    border-radius: 999px;
    background: #eef7ff;
    font-size: 13px;
    min-height: 40px;
    display: inline-flex;
    align-items: center;
  }
  .header-tel {
    display: none;
  }
  .header-cta {
    padding: 8px 12px;
    font-size: 13px;
    box-shadow: 0 4px 0 #0345a4;
  }
  .header-cta-full {
    display: none;
  }
  .header-cta-short {
    display: inline;
  }
  body {
    padding-bottom: 64px;
  }
  .mobile-cta-bar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 30;
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    box-shadow: 0 -6px 20px rgba(6, 51, 119, 0.18);
  }
  .mobile-cta-tel,
  .mobile-cta-contact {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 56px;
    font-size: 15px;
    font-weight: 900;
  }
  .mobile-cta-tel {
    background: #eef7ff;
    color: var(--deep);
  }
  .mobile-cta-contact {
    background: #d9342b;
    color: #fff;
  }
  .campaign-banner {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 18px 0;
  }
  .campaign-banner img {
    height: auto;
    max-height: 132px;
  }
  .serviceArea {
    margin-top: 32px;
    padding: 24px 0 0;
  }
  .serviceAreaInner {
    gap: 20px;
  }
  .japanMapImage {
    width: min(100%, 420px);
  }
  .prefectureGroups {
    grid-template-columns: 1fr;
  }
  .prefectureGroup {
    padding: 8px 6px;
  }
  .hero {
    min-height: clamp(480px, 88vh, 690px);
  }
  .hero-bg {
    object-position: 40% center;
  }
  .hero-inner {
    width: calc(100% - 24px);
    min-height: clamp(420px, 80vh, 610px);
    padding-top: 38px;
  }
  .ribbon {
    padding: 8px 22px;
    font-size: 16px;
  }
  .ribbon::before,
  .ribbon::after {
    display: none;
  }
  .hero h1 {
    margin-top: 22px;
    font-size: clamp(42px, 14vw, 52px);
    line-height: 0.98;
  }
  .hero-sub {
    font-size: 17px;
  }
  .offer-cards strong {
    font-size: 36px;
  }
  .offer-cards {
    gap: 10px;
  }
  .offer-cards div {
    min-height: 96px;
    padding: 16px 12px;
  }
  .section-title h2,
  .recommend h2,
  .contact-copy h2 {
    font-size: clamp(30px, 9vw, 34px);
  }
  .section {
    padding: 58px 14px;
  }
  .worries {
    padding-top: 64px;
  }
  .worry-grid article {
    padding: 24px 18px;
  }
  .recommend {
    padding: 72px 14px 66px;
  }
  .recommend p {
    font-size: 16px;
  }
  .breaker-mark {
    font-size: 1em;
  }
  .explain-layout {
    gap: 24px;
  }
  .low-voltage-visual {
    padding: 20px;
  }
  .low-voltage-visual,
  .mechanism-steps {
    grid-template-columns: 1fr;
  }
  .step-arrow {
    transform: rotate(90deg);
    justify-self: center;
  }
  .mechanism-steps article {
    min-height: 320px;
  }
  .mechanism-campaign {
    padding: 54px 14px;
  }
  .mechanism-campaign-inner {
    gap: 22px;
  }
  .campaign-visual img {
    max-height: 320px;
  }
  .campaign-form {
    padding: 22px 18px;
  }
  .campaign-form h2 {
    font-size: 30px;
  }
  .selected-grid {
    gap: 18px;
  }
  .selected-grid article {
    padding: 16px 14px 20px;
  }
  .selected-grid article img {
    height: 145px;
  }
  .selected-grid h3 {
    font-size: 20px;
  }
  .selected-grid p {
    font-size: 15px;
  }
  .case-track {
    padding: 10px 3%;
  }
  .case-track article {
    flex-basis: 94%;
    gap: 14px;
    padding: 20px 16px;
  }
  .case-track .case-img {
    height: 180px;
  }
  .case-track > article > h3 {
    font-size: 28px;
  }
  .case-table dl {
    grid-template-columns: 1fr;
  }
  .case-table dt,
  .case-table dd {
    min-height: 38px;
    padding: 8px 10px;
    font-size: 15px;
  }
  .case-table dt {
    justify-content: flex-start;
  }
  .case-track article a {
    font-size: 16px;
  }
  .flow-note {
    min-width: 0;
  }
  .flow-note a {
    min-width: 0;
    width: 100%;
  }
  .faq-list summary {
    grid-template-columns: 36px 1fr 24px;
    gap: 10px;
    padding: 16px 14px;
    font-size: 16px;
  }
  .faq-list summary::before {
    width: 36px;
    height: 36px;
    font-size: 19px;
  }
  .faq-list p {
    padding: 0 16px 18px 60px;
    font-size: 15px;
  }
  .contact {
    padding: 58px 14px;
  }
  .lead-form {
    gap: 14px;
    padding: 20px 16px;
    border-radius: 22px;
  }
  .lead-form button {
    min-height: 58px;
    font-size: 18px;
  }
  .site-footer {
    padding: 30px 16px;
  }
  .footer-brand {
    justify-content: center;
  }
  .footer-info {
    gap: 12px;
  }
  .footer-info div {
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
  }
  .footer-info dd {
    font-size: 14px;
    overflow-wrap: anywhere;
  }
}