:root {
  --color-primary: #004f99;
  --color-primary-dark: #004f99;
  --color-primary-soft: #e8f2fb;
  --color-accent: #00a0c8;
  --color-text: #152033;
  --color-muted: #5e6b7c;
  --color-border: #d9e3ee;
  --color-bg: #ffffff;
  --color-surface: #f5f8fb;
  --color-surface-strong: #edf4fa;
  --font-base: "Noto Sans JP", "Hiragino Kaku Gothic Pro", "ヒラギノ角ゴ Pro W3", "メイリオ", Meiryo, "ＭＳ Ｐゴシック", sans-serif;
  --shadow-soft: 0 18px 46px rgba(21, 32, 51, 0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 3rem;
  --space-xl: 5rem;
  --container: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-text);
  font-family: var(--font-base);
  line-height: 1.75;
  background: var(--color-bg);
}

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

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

p,
h1,
h2,
h3,
figure {
  margin: 0;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: 14px max(20px, calc((100vw - var(--container)) / 2));
  border-bottom: 1px solid rgba(217, 227, 238, 0.8);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.site-logo {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
}

.site-logo img {
  display: block;
  width: min(56vw, 221px);
  height: auto;
}

.menu-toggle {
  display: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.8rem, 2vw, 1.7rem);
  color: var(--color-muted);
  font-size: 0.94rem;
  font-weight: 700;
  white-space: nowrap;
}

.site-nav a {
  transition: color 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--color-primary);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0.48rem 1rem;
  border-radius: var(--radius-sm);
  color: #ffffff;
  background: var(--color-primary);
}

.site-nav .nav-cta:hover,
.site-nav .nav-cta:focus-visible {
  color: #ffffff;
  background: var(--color-primary-dark);
}

.hero {
  position: relative;
  display: grid;
  align-items: center;
  min-height: 680px;
  overflow: hidden;
  color: #ffffff;
  background-image: url("images/subsidy-top.jpg");
  background-position: center right;
  background-size: cover;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0, 47, 91, 0.92) 0%, rgba(0, 79, 153, 0.8) 42%, rgba(0, 79, 153, 0.2) 100%),
    linear-gradient(180deg, rgba(0, 20, 38, 0.12) 0%, rgba(0, 20, 38, 0.36) 100%);
}

.hero__inner {
  position: relative;
  z-index: 1;
  width: min(100% - 40px, var(--container));
  margin-inline: auto;
  padding: var(--space-xl) 0;
}

.eyebrow,
.section-label {
  color: var(--color-accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #bdeeff;
  font-size: 1.56rem;
  line-height: 2.4;
  margin-bottom: var(--space-sm);
}

.eyebrow,
.section-label {
  color: var(--color-accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 780px;
  font-size: 40px;
  line-height: 1.35;
  font-weight: 800;
}

.hero-title-narrow-text {
  display: none;
}

.hero__lead {
  max-width: 720px;
  margin-top: var(--space-md);
  color: rgba(255, 255, 255, 0.92);
  font-size: clamp(1rem, 1.7vw, 1.18rem);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0.82rem 1.45rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-weight: 800;
  line-height: 1.3;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.external-link::after {
  content: "";
  flex: 0 0 auto;
  width: 0.9em;
  height: 0.9em;
  margin-left: 0.4em;
  background: currentColor;
  mask: url("images/external-link-icon.png") center / contain no-repeat;
  -webkit-mask: url("images/external-link-icon.png") center / contain no-repeat;
}

.text-link.external-link {
  display: inline-flex;
  align-items: center;
}

.text-link.external-link::after {
  transform: translateY(2px);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button--primary {
  color: #ffffff;
  background: var(--color-primary);
  box-shadow: 0 14px 30px rgba(0, 79, 153, 0.26);
}

.hero .button--primary,
.contact-section .button--primary {
  color: var(--color-primary);
  background: #ffffff;
  box-shadow: 0 16px 36px rgba(0, 20, 38, 0.24);
}

.button--primary:hover,
.button--primary:focus-visible {
  background: var(--color-primary-dark);
}

.hero .button--primary:hover,
.hero .button--primary:focus-visible,
.contact-section .button--primary:hover,
.contact-section .button--primary:focus-visible {
  color: #ffffff;
  background: var(--color-primary-dark);
}

.button--secondary {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.1);
}

.button--secondary:hover,
.button--secondary:focus-visible {
  background: rgba(255, 255, 255, 0.2);
}

.section {
  padding: var(--space-xl) 0;
}

#contact {
  scroll-margin-top: 20px;
}

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

.section--intro {
  border-bottom: 1px solid var(--color-border);
}

.section-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(2rem, 5vw, 5rem);
}

.section h2,
.contact-section h2 {
  margin-top: 0.45rem;
  font-size: 30px;
  line-height: 1.45;
  font-weight: 800;
}

#subsidy-title {
  white-space: nowrap;
}

.section h3,
.contact-section h3 {
  font-size: 1.2rem;
  line-height: 1.45;
}

.section-copy {
  display: grid;
  gap: var(--space-md);
  color: var(--color-muted);
  font-size: 1.04rem;
}

.note {
  padding: var(--space-md);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  background: var(--color-primary-soft);
  font-size: 0.96rem;
}

.section-heading {
  margin-bottom: var(--space-lg);
}

.section-heading p:not(.section-label) {
  margin-top: var(--space-sm);
  color: var(--color-muted);
  font-size: 1.04rem;
}

.program-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
}

.program-card {
  position: relative;
  display: grid;
  gap: var(--space-sm);
  min-height: 360px;
  padding: clamp(1.4rem, 3vw, 2rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #ffffff;
  box-shadow: 0 10px 32px rgba(21, 32, 51, 0.06);
}

.program-card__number {
  color: var(--color-primary);
  font-size: 0.88rem;
  font-weight: 800;
}

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

.text-link {
  align-self: end;
  width: fit-content;
  color: var(--color-primary);
  font-weight: 800;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}

.text-link:hover,
.text-link:focus-visible {
  color: var(--color-primary-dark);
}

.benefit-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
}

.benefit-item {
  padding: 1.7rem;
  border-top: 3px solid var(--color-primary);
  background: var(--color-surface);
}

.benefit-item__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: var(--space-sm);
  border-radius: 50%;
  color: var(--color-primary);
  background: #ffffff;
  font-size: 0.84rem;
  font-weight: 800;
}

.benefit-item p {
  margin-top: var(--space-xs);
  color: var(--color-muted);
}

.section--models {
  background: linear-gradient(180deg, var(--color-surface) 0%, #ffffff 100%);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
}

.product-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #ffffff;
  box-shadow: 0 12px 34px rgba(21, 32, 51, 0.08);
}

.product-card__image {
  display: grid;
  place-items: center;
  aspect-ratio: 4 / 3;
  padding: var(--space-sm);
  background: var(--color-surface-strong);
}

.product-card__image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.product-card__body {
  padding: 1.1rem;
}

.product-card h3 {
  font-size: 1rem;
}

.product-card__description {
  flex: 1;
  padding: 1.1rem;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.contact-section {
  padding: clamp(3rem, 6vw, 4rem) 0;
  color: #ffffff;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 64%, #0b6fb2 100%);
}

.contact-section .section-label {
  color: #bdeeff;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 3vw, 2rem);
  align-items: start;
}

.contact-copy,
.form-placeholder {
  min-width: 0;
}

.contact-copy p:not(.section-label) {
  max-width: 960px;
  margin-top: var(--space-md);
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.04rem;
}

.contact-copy .button {
  margin-top: 2rem;
}

.form-placeholder {
  width: 100%;
  min-height: 320px;
  padding: clamp(0.8rem, 1.5vw, 1.15rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  background: #ffffff;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.form-placeholder .hs-form-frame,
.form-placeholder iframe {
  width: 100%;
}

.form-placeholder .hs-form fieldset {
  max-width: none;
}

.form-placeholder .hs-form input,
.form-placeholder .hs-form select,
.form-placeholder .hs-form textarea {
  width: 100%;
}

.form-placeholder .hs-form select {
  min-width: 210px;
  padding-right: 2rem;
}

.form-placeholder__label {
  margin-bottom: var(--space-sm);
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.form-placeholder .hs-button,
.form-placeholder input[type="submit"] {
  border-color: var(--color-primary);
  color: #ffffff;
  background: var(--color-primary);
}

.form-placeholder .hs-button:hover,
.form-placeholder .hs-button:focus-visible,
.form-placeholder input[type="submit"]:hover,
.form-placeholder input[type="submit"]:focus-visible {
  border-color: var(--color-primary-dark);
  background: var(--color-primary-dark);
}

.site-footer {
  padding: 1.4rem 0;
  color: var(--color-muted);
  background: #ffffff;
  font-size: 0.88rem;
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem 1.4rem;
}

.site-footer address {
  margin-left: auto;
  font-style: normal;
  text-align: right;
}

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

@media (max-width: 637px) {
  .site-footer .container {
    flex-direction: column;
    justify-content: center;
    gap: 0.45rem;
    text-align: center;
  }

  .site-footer address {
    margin-left: 0;
    text-align: center;
  }
}

@media (max-width: 980px) {
  .site-header {
    align-items: center;
    flex-direction: row;
    padding-right: max(20px, calc((100vw - var(--container)) / 2));
  }

  .menu-toggle {
    position: relative;
    z-index: 45;
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 42px;
    height: 42px;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    cursor: pointer;
  }

  .menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    margin-inline: auto;
    border-radius: 999px;
    background: var(--color-primary);
    transition: transform 0.2s ease, opacity 0.2s ease;
  }

  body.is-menu-open {
    overflow: hidden;
  }

  body.is-menu-open::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 30;
    background: rgba(0, 79, 153, 0.42);
  }

  .site-header.is-menu-open {
    z-index: 50;
    border-bottom-color: transparent;
    background: transparent;
    backdrop-filter: none;
  }

  .site-header.is-menu-open .site-logo {
    visibility: hidden;
  }

  .site-header.is-menu-open .menu-toggle {
    position: fixed;
    top: 16px;
    right: 230px;
    z-index: 60;
  }

  .site-header.is-menu-open .menu-toggle span {
    background: var(--color-primary);
  }

  .site-header.is-menu-open .menu-toggle span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .site-header.is-menu-open .menu-toggle span:nth-child(2) {
    opacity: 0;
  }

  .site-header.is-menu-open .menu-toggle span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 55;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    height: 100vh;
    height: 100dvh;
    min-height: 100vh;
    padding: 2.5rem 1.2rem 1.5rem;
    background: #ffffff;
    box-shadow: none;
    transform: translateX(100%);
    transition: transform 0.22s ease;
    white-space: normal;
  }

  .site-header.is-menu-open .site-nav {
    transform: translateX(0);
  }

  .site-nav a {
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-primary);
  }

  .site-nav a:hover,
  .site-nav a:focus-visible {
    color: var(--color-primary-dark);
  }

  .site-nav a:last-child {
    border-bottom: 0;
  }

  .site-nav .nav-cta {
    justify-content: center;
    margin-top: 1rem;
    padding: 0.7rem 1rem;
    border: 1px solid var(--color-primary);
    color: #ffffff;
    background: var(--color-primary);
    text-align: center;
  }

  .site-nav .nav-cta:hover,
  .site-nav .nav-cta:focus-visible {
    color: #ffffff;
    background: var(--color-primary);
  }

  .hero {
    min-height: 620px;
    background-position: center;
  }

  .hero__overlay {
    background: linear-gradient(90deg, rgba(0, 47, 91, 0.94) 0%, rgba(0, 79, 153, 0.72) 100%);
  }

  #subsidy,
  #programs,
  #models {
    scroll-margin-top: 20px;
  }

  #contact {
    scroll-margin-top: 40px;
  }

  .section-grid,
  .program-cards,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .section-heading {
    margin-bottom: 2rem;
  }

  .program-card {
    gap: 0.75rem;
    min-height: auto;
  }

  .program-card .text-link {
    align-self: start;
    margin-top: 0.25rem;
  }

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

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

@media (max-width: 640px) {
  :root {
    --space-xl: 3.5rem;
  }

  .container,
  .hero__inner {
    width: min(100% - 40px, var(--container));
  }

  .site-header {
    padding-inline: 14px;
  }

  .site-nav {
    font-size: 0.86rem;
    padding-inline: 20px;
  }

  .nav-cta {
    min-height: 36px;
    padding-inline: 0.8rem;
  }

  #subsidy,
  #programs,
  #models,
  #contact {
    scroll-margin-top: 40px;
  }

  .hero {
    min-height: 650px;
  }

  .hero__actions,
  .hero__actions .button,
  .contact-copy .button {
    width: 100%;
  }

  .program-card,
  .benefit-item {
    padding: 1.25rem;
  }

  .benefit-list,
  .product-grid {
    grid-template-columns: 1fr;
  }

  #subsidy-title {
    font-size: 24px;
  }

  .contact-section .container {
    width: min(100% - 32px, var(--container));
  }

  .form-placeholder {
    width: 100%;
    max-width: 100%;
  }

  .form-placeholder .hs-form-frame,
  .form-placeholder iframe,
  .form-placeholder .hs-form,
  .form-placeholder .hs-form fieldset {
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
  }

  .form-placeholder .hs-form fieldset.form-columns-2 .hs-form-field,
  .form-placeholder .hs-form fieldset.form-columns-3 .hs-form-field {
    float: none !important;
    width: 100% !important;
  }

  .form-placeholder .hs-form .input {
    margin-right: 0 !important;
  }

  .form-placeholder .hs-form input,
  .form-placeholder .hs-form select,
  .form-placeholder .hs-form textarea,
  .form-placeholder .hs-form .hs-input {
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
  }
}

@media (max-width: 480px) {
  #subsidy-title {
    font-size: 22px;
  }
}

@media (max-width: 380px) {
  #subsidy-title {
    font-size: 20px;
  }
}

@media (max-width: 340px) {
  #subsidy-title {
    font-size: 18px;
  }
}

@media (max-width: 731px) {
  .hero-title-wide-break {
    display: none;
  }

  .hero-title-narrow-text {
    display: inline;
    white-space: nowrap;
  }
}