:root {
  --color-ink: #183035;
  --color-muted: #5d6f73;
  --color-line: #d8e6e3;
  --color-bg: #f6faf8;
  --color-white: #ffffff;
  --color-green: #2f8f73;
  --color-green-dark: #1f6d59;
  --color-blue: #d9edf4;
  --color-coral: #d96f52;
  --shadow-soft: 0 18px 45px rgba(24, 48, 53, 0.14);
  --max-width: 1120px;
  --header-height: 76px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-ink);
  background: var(--color-bg);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP", sans-serif;
  line-height: 1.75;
}

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

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

button,
input,
textarea {
  font: inherit;
}

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 24px;
  padding: 0 clamp(18px, 4vw, 44px);
  color: var(--color-white);
  transition: background-color 180ms ease, box-shadow 180ms ease, color 180ms ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  color: var(--color-ink);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 8px 28px rgba(24, 48, 53, 0.1);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  font-weight: 700;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  color: var(--color-white);
  background: var(--color-green);
  border-radius: 8px;
  font-size: 1.1rem;
}

.brand-name,
.brand-sub {
  display: block;
  white-space: nowrap;
}

.brand-name {
  font-size: 1rem;
  line-height: 1.2;
}

.brand-sub {
  margin-top: 2px;
  color: currentColor;
  font-size: 0.76rem;
  font-weight: 500;
  opacity: 0.82;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.5vw, 30px);
  font-size: 0.92rem;
  font-weight: 700;
}

.site-nav a {
  position: relative;
  padding: 8px 0;
}

.site-nav a::after {
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 2px;
  content: "";
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 160ms ease;
}

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

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: currentColor;
  cursor: pointer;
}

.site-header.is-scrolled .nav-toggle,
.site-header.is-open .nav-toggle {
  border-color: var(--color-line);
  background: var(--color-white);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
  border-radius: 999px;
}

.hero {
  position: relative;
  min-height: min(760px, 82svh);
  overflow: hidden;
  isolation: isolate;
  background: var(--color-ink);
}

.hero-image {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
}

.hero-shade {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(20, 50, 53, 0.72) 0%, rgba(20, 50, 53, 0.46) 38%, rgba(20, 50, 53, 0.08) 78%),
    linear-gradient(180deg, rgba(10, 30, 33, 0.3) 0%, rgba(10, 30, 33, 0.05) 45%, rgba(10, 30, 33, 0.22) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(var(--max-width), calc(100% - 40px));
  min-height: min(760px, 82svh);
  display: flex;
  flex-direction: column;
  justify-content: center;
  margin: 0 auto;
  padding-top: var(--header-height);
  padding-right: min(30vw, 330px);
  color: var(--color-white);
}

.eyebrow,
.section-kicker {
  margin: 0 0 10px;
  color: var(--color-green-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #c8f0e2;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.25;
}

h1 {
  max-width: 10em;
  font-size: clamp(2.7rem, 7vw, 5.6rem);
}

h2 {
  font-size: clamp(1.8rem, 4vw, 2.7rem);
}

h3 {
  font-size: 1.08rem;
}

p {
  margin: 0;
}

.hero-lead {
  max-width: 620px;
  margin-top: 22px;
  font-size: clamp(1.05rem, 2.2vw, 1.32rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 148px;
  min-height: 48px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  line-height: 1.2;
  transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button.primary {
  color: var(--color-white);
  background: var(--color-green);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.18);
}

.button.secondary {
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.7);
  background: rgba(255, 255, 255, 0.12);
}

.intro {
  background: var(--color-white);
}

.section-inner {
  width: min(var(--max-width), calc(100% - 40px));
  margin: 0 auto;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1fr);
  gap: 36px;
  padding: 48px 0;
  align-items: center;
}

.intro-grid p:last-child {
  color: var(--color-muted);
  font-size: 1.03rem;
}

.intro-copy {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
}

.intro-copy p {
  color: var(--color-muted);
  font-size: 1.03rem;
}

.intro-mascot-box {
  display: grid;
  gap: 8px;
  justify-items: center;
  text-align: center;
}

.intro-mascot {
  width: clamp(110px, 11vw, 148px);
  height: auto;
  filter: drop-shadow(0 12px 16px rgba(24, 48, 53, 0.14));
}

.intro-mascot-box p {
  color: var(--color-green-dark);
  font-size: 0.92rem;
  font-weight: 800;
  line-height: 1.35;
}

.section {
  padding: clamp(64px, 9vw, 104px) 0;
  scroll-margin-top: calc(var(--header-height) + 18px);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 34px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.service-card {
  overflow: hidden;
  min-height: 100%;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: 0 1px 0 rgba(24, 48, 53, 0.04);
}

.service-photo {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.service-body {
  padding: 22px;
}

.service-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 32px;
  margin-bottom: 20px;
  color: var(--color-green-dark);
  background: var(--color-blue);
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 800;
}

.service-card p,
.strength-item p,
.flow-list p,
.faq-list p,
.price-heading p,
.contact-layout p {
  color: var(--color-muted);
}

.service-card h3,
.strength-item h3,
.flow-list h3 {
  margin-bottom: 10px;
}

.works-section {
  background: var(--color-white);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.work-card {
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: 0 10px 28px rgba(24, 48, 53, 0.08);
}

.work-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.work-card figcaption {
  padding: 20px;
}

.work-card h3 {
  margin-bottom: 8px;
}

.work-card p,
.works-note {
  color: var(--color-muted);
}

.works-note {
  margin-top: 16px;
  font-size: 0.88rem;
}

.strengths-section {
  background: var(--color-white);
}

.strength-list {
  display: grid;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  background: var(--color-line);
}

.strength-item {
  display: grid;
  grid-template-columns: minmax(180px, 0.45fr) minmax(0, 1fr);
  gap: 24px;
  padding: 26px;
  background: var(--color-white);
}

.voice-section {
  background: var(--color-bg);
}

.voice-section .section-heading p:last-child {
  color: var(--color-muted);
}

.voice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.voice-card {
  display: grid;
  gap: 12px;
  min-height: 100%;
  padding: 24px;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: 0 1px 0 rgba(24, 48, 53, 0.04);
}

.voice-meta {
  width: fit-content;
  padding: 5px 10px;
  border-radius: 8px;
  color: var(--color-green-dark);
  background: var(--color-blue);
  font-size: 0.82rem;
  font-weight: 800;
  line-height: 1.4;
}

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

.voice-card p:not(.voice-meta) {
  color: var(--color-muted);
}

.flow-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.flow-list li {
  position: relative;
  min-height: 230px;
  padding: 24px;
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: 0 1px 0 var(--color-line);
}

.flow-list span {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  margin-bottom: 24px;
  color: var(--color-white);
  background: var(--color-green);
  border-radius: 50%;
  font-weight: 800;
}

.flow-note {
  margin-top: 18px;
  padding: 22px 24px;
  border: 1px solid var(--color-line);
  border-left: 5px solid var(--color-green);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: 0 1px 0 var(--color-line);
}

.flow-note h3 {
  margin-bottom: 8px;
}

.flow-note p {
  color: var(--color-muted);
}

.price-section {
  background: #eef7f5;
}

.price-heading {
  max-width: 760px;
  margin-bottom: 30px;
}

.price-heading h2 {
  margin-bottom: 16px;
}

.price-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  align-items: start;
}

.price-card {
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: 0 1px 0 var(--color-line);
}

.price-card-featured {
  box-shadow: var(--shadow-soft);
}

.price-card h3 {
  padding: 18px 20px;
  color: var(--color-white);
  background: var(--color-green-dark);
}

.price-table {
  overflow: hidden;
  background: var(--color-white);
}

.price-table div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 64px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--color-line);
}

.price-table.compact div {
  min-height: 58px;
  padding: 15px 20px;
}

.price-table div:last-child {
  border-bottom: 0;
}

.price-table strong {
  color: var(--color-coral);
  white-space: nowrap;
}

.price-notes {
  margin-top: 18px;
  padding: 22px 24px;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  background: var(--color-white);
}

.price-notes h3 {
  margin-bottom: 10px;
}

.price-notes ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 1.2em;
  color: var(--color-muted);
}

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

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

.faq-list details {
  border: 1px solid var(--color-line);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: 0 1px 0 rgba(24, 48, 53, 0.04);
}

.faq-list summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  padding: 20px 22px;
  color: var(--color-ink);
  font-weight: 800;
  line-height: 1.55;
  list-style: none;
  transition: color 160ms ease;
}

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

.faq-list summary::after {
  flex: 0 0 auto;
  content: "+";
  color: var(--color-green-dark);
  font-size: 1.3rem;
  line-height: 1;
}

.faq-list summary:hover,
.faq-list summary:focus-visible {
  color: var(--color-green-dark);
}

.faq-list details[open] summary {
  border-bottom: 1px solid var(--color-line);
}

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

.faq-answer {
  display: grid;
  gap: 10px;
  padding: 18px 22px 22px;
}

.faq-answer p {
  padding: 0;
  color: var(--color-muted);
}

.company-section {
  background: var(--color-bg);
}

.company-card {
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: 0 1px 0 rgba(24, 48, 53, 0.04);
}

.company-list {
  display: grid;
  margin: 0;
  border-top: 1px solid var(--color-line);
}

.company-list div {
  display: grid;
  grid-template-columns: minmax(120px, 0.28fr) minmax(0, 1fr);
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--color-line);
}

.company-list dt {
  color: var(--color-green-dark);
  font-weight: 800;
}

.company-list dd {
  margin: 0;
  color: var(--color-muted);
}

.company-note {
  margin-top: 18px;
  color: var(--color-muted);
}

.contact-section {
  padding: clamp(64px, 9vw, 98px) 0;
  color: var(--color-white);
  background: var(--color-ink);
}

.contact-section .section-kicker {
  color: #9adcc8;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(300px, 0.65fr);
  gap: 36px;
  align-items: center;
}

.contact-layout p {
  color: rgba(255, 255, 255, 0.78);
}

.contact-layout h2 {
  margin-bottom: 16px;
}

.contact-panel {
  display: grid;
  gap: 14px;
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.contact-method {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  align-items: flex-start;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.contact-method-number {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  color: var(--color-white);
  background: var(--color-green);
  border-radius: 8px;
  font-weight: 800;
}

.contact-method h3 {
  margin-bottom: 4px;
  color: var(--color-white);
  font-size: 1.05rem;
}

.contact-method p {
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.92rem;
  line-height: 1.7;
}

.contact-status {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin-top: 8px;
  padding: 5px 10px;
  border: 1px solid rgba(154, 220, 200, 0.45);
  border-radius: 8px;
  color: #c8f0e2;
  background: rgba(47, 143, 115, 0.18);
  font-size: 0.84rem;
  font-weight: 700;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin-top: 8px;
  padding: 7px 12px;
  border: 1px solid rgba(154, 220, 200, 0.5);
  border-radius: 8px;
  color: var(--color-white);
  background: var(--color-green);
  font-size: 0.9rem;
  font-weight: 800;
  line-height: 1.3;
}

.contact-link:hover,
.contact-link:focus-visible {
  background: var(--color-green-dark);
}

.recruit-contact {
  display: grid;
  gap: 8px;
  padding: 18px;
  border: 1px solid rgba(154, 220, 200, 0.34);
  border-radius: 8px;
  background: rgba(154, 220, 200, 0.1);
}

.contact-tag {
  width: fit-content;
  padding: 4px 10px;
  border-radius: 8px;
  color: #c8f0e2;
  background: rgba(47, 143, 115, 0.24);
  font-size: 0.82rem;
  font-weight: 800;
}

.recruit-contact h3 {
  color: var(--color-white);
  font-size: 1.05rem;
}

.recruit-contact p {
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.92rem;
  line-height: 1.7;
}

.site-footer {
  padding: 22px 20px;
  color: var(--color-muted);
  background: var(--color-white);
  text-align: center;
}

@media (max-width: 900px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: var(--header-height);
    left: 16px;
    right: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    color: var(--color-ink);
    background: var(--color-white);
    border: 1px solid var(--color-line);
    border-radius: 8px;
    box-shadow: var(--shadow-soft);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 12px 10px;
  }

  .site-nav a::after {
    display: none;
  }

  .intro-grid,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .service-grid,
  .flow-list,
  .price-groups,
  .voice-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .strength-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

@media (max-width: 640px) {
  :root {
    --header-height: 68px;
  }

  .site-header {
    padding: 0 16px;
  }

  .brand {
    gap: 10px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
  }

  .brand-name {
    font-size: 0.92rem;
  }

  .brand-sub {
    max-width: none;
    white-space: nowrap;
    line-height: 1.35;
    font-size: 0.7rem;
  }

  .hero {
    min-height: 78svh;
  }

  .hero-image {
    object-position: 58% center;
  }

  .hero-shade {
    background:
      linear-gradient(90deg, rgba(20, 50, 53, 0.82) 0%, rgba(20, 50, 53, 0.56) 58%, rgba(20, 50, 53, 0.22) 100%),
      linear-gradient(180deg, rgba(10, 30, 33, 0.25) 0%, rgba(10, 30, 33, 0.02) 48%, rgba(10, 30, 33, 0.28) 100%);
  }

  .hero-content {
    width: min(var(--max-width), calc(100% - 32px));
    min-height: 78svh;
    justify-content: flex-end;
    padding-right: 0;
    padding-bottom: 64px;
  }

  h1 {
    font-size: clamp(2.25rem, 11vw, 3.3rem);
  }

  .hero-lead {
    margin-top: 16px;
  }

  .button {
    min-width: 0;
    flex: 1 1 132px;
  }

  .section-inner {
    width: min(var(--max-width), calc(100% - 32px));
  }

  .intro-grid {
    padding: 38px 0;
  }

  .intro-copy {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .intro-mascot {
    width: 118px;
    justify-self: center;
  }

  .service-grid,
  .flow-list,
  .works-grid,
  .voice-grid {
    grid-template-columns: 1fr;
  }

  .service-card,
  .flow-list li {
    min-height: auto;
  }

  .price-groups {
    grid-template-columns: 1fr;
  }

  .price-table div {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .company-list div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

}