:root {
  --ink: #2a2a2a;
  --ink-soft: #3a3a3a;
  --muted: #555555;
  --line: rgba(42, 42, 42, 0.14);
  --paper: #f3f6f8;
  --paper-deep: #e4ebf1;
  --accent: #0b6161;
  --accent-deep: #084848;
  --accent-soft: rgba(13, 110, 110, 0.1);
  --white: #ffffff;
  --shadow: 0 18px 50px rgba(15, 28, 46, 0.12);
  --font-display: "Shippori Mincho", "Hiragino Mincho ProN", serif;
  --font-body: "Zen Kaku Gothic New", "Hiragino Sans", sans-serif;
  --max: 1080px;
  --nav-h: 72px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.75;
  background: var(--white);
  min-height: 100vh;
}

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

a {
  color: var(--accent-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--accent);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(12px);
  background: rgba(243, 246, 248, 0.88);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
  min-height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  text-decoration: none;
  color: var(--ink);
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.brand-tag {
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.92rem;
  font-weight: 500;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--accent-deep);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--white) !important;
  text-decoration: none !important;
  font-size: 0.88rem;
  transition: background 0.2s ease, transform 0.2s ease;
}

.nav-cta:hover {
  background: var(--accent);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--white);
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.5rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 1.1rem;
  height: 2px;
  background: var(--ink);
}

.hero {
  position: relative;
  display: grid;
  align-items: start;
  overflow: hidden;
  color: var(--white);
  background:
    linear-gradient(115deg, rgba(15, 28, 46, 0.92) 0%, rgba(15, 28, 46, 0.72) 48%, rgba(13, 110, 110, 0.55) 100%),
    url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"),
    linear-gradient(160deg, #0f1c2e 0%, #16324f 45%, #0d6e6e 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(15, 28, 46, 0.35) 100%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.25rem 2.25rem;
  animation: rise 0.9s ease both;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 600;
  letter-spacing: 0.06em;
  margin: 0 0 1.25rem;
  line-height: 1.25;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.8vw, 1.85rem);
  font-weight: 500;
  line-height: 1.55;
  margin: 0 0 1rem;
  /* max-width: 22em; */
}

.hero-lead {
  margin: 0 0 2rem;
  /* max-width: 36em; */
  color: rgba(255, 255, 255, 0.95);
  font-size: 1.02rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.35rem;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--white);
  color: var(--ink);
}

.btn-primary:hover {
  background: #e8f4f4;
  color: var(--ink);
}

.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.45);
  color: var(--white);
}

.btn-ghost:hover {
  border-color: var(--white);
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
}

.btn-solid {
  background: var(--accent);
  color: var(--white);
}

.btn-solid:hover {
  background: var(--accent-deep);
  color: var(--white);
}

.btn-outline {
  border: 1px solid var(--ink);
  color: var(--ink);
  background: transparent;
}

.btn-outline:hover {
  background: var(--ink);
  color: var(--white);
}

main {
  display: block;
  background: var(--white);
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 1.25rem;
}

.section-narrow {
  max-width: 760px;
}

.section-head {
  margin-bottom: 1.5rem;
}

.section-label {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-deep);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.section-head h2,
.page-hero h1 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.03em;
  line-height: 1.4;
  margin: 0 0 0.65rem;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  color: var(--ink);
}

.section-head p,
.page-hero p {
  margin: 0;
  color: var(--ink-soft);
  max-width: 40em;
}

.page-hero {
  padding: 2rem 1.25rem 0.25rem;
  max-width: var(--max);
  margin: 0 auto;
  color: var(--ink);
}

.page-hero + .section {
  padding-top: 1.5rem;
}

.flagship {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(13, 110, 110, 0.08), transparent 60%);
}

.flagship-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 1.25rem;
  display: grid;
  gap: 1.15rem;
}

.flagship h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  margin: 0;
}

.flagship p {
  margin: 0;
  max-width: 40em;
  color: var(--ink-soft);
}

.service-list {
  display: grid;
  gap: 0;
}

.service-item {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 2fr);
  gap: 1.5rem 2rem;
  padding: 1.75rem 0;
  border-top: 1px solid var(--line);
}

.service-item:last-child {
  border-bottom: 1px solid var(--line);
}

.service-item h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0 0 0.4rem;
  font-weight: 600;
}

.service-price {
  font-size: 1.05rem;
  color: var(--accent-deep);
  font-weight: 500;
  margin: 0;
}

.service-meta {
  margin: 0.35rem 0 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.service-item ul {
  margin: 0.35rem 0 0;
  padding-left: 1.1rem;
  color: var(--ink-soft);
}

.service-item li + li {
  margin-top: 0.25rem;
}

.highlight {
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  padding: 1.25rem 1.35rem;
  margin: 0 0 1.5rem;
}

.highlight-compact {
  padding: 0.9rem 1.15rem;
  margin: 0;
}

.highlight p {
  margin: 0;
  color: var(--ink-soft);
}

.plan-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 0;
}

.plan-table th,
.plan-table td {
  text-align: left;
  padding: 1rem 0.75rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.plan-table th {
  font-family: var(--font-display);
  font-weight: 600;
  width: 28%;
}

.plan-table td {
  color: var(--ink-soft);
}

.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tech-list li {
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.65);
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.audience-list {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--ink-soft);
}

.audience-list li + li {
  margin-top: 0.4rem;
}

.cta-band {
  margin: 0.5rem 0 0;
  padding: 2.5rem 1.25rem;
  background:
    linear-gradient(120deg, #0f1c2e 0%, #16324f 55%, var(--accent-deep) 100%);
  color: var(--white);
}

.cta-band-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  gap: 1.25rem;
}

.cta-band h2 {
  font-family: var(--font-display);
  margin: 0;
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
}

.cta-band p {
  margin: 0;
  max-width: 36em;
  color: rgba(255, 255, 255, 0.95);
}

.profile-block p {
  color: var(--ink-soft);
}

.profile-block p + p {
  margin-top: 1rem;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem 2rem;
  margin-top: 1.5rem;
}

.capability h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 0 0 0.75rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--line);
}

.capability ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink-soft);
}

.capability li + li {
  margin-top: 0.3rem;
}

.contact-panel {
  display: grid;
  gap: 1.5rem;
}

.contact-box {
  padding: 1.75rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.contact-box-first {
  margin-top: 0;
}

.contact-aside {
  display: grid;
  gap: 0;
}

.contact-subhead-follow {
  margin-top: 2rem;
}

.contact-box h2 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin: 0 0 0.75rem;
}

.contact-box p {
  margin: 0 0 1rem;
  color: var(--ink-soft);
}

.contact-subhead {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0 0 1rem;
}

.contact-form {
  display: grid;
  gap: 1.15rem;
  margin-top: 1.25rem;
}

.form-field {
  display: grid;
  gap: 0.4rem;
}

.form-field label {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink);
}

.form-field .required,
.form-field .optional {
  margin-left: 0.35rem;
  font-size: 0.78rem;
  font-weight: 400;
}

.form-field .required {
  color: var(--accent-deep);
}

.form-field .optional {
  color: var(--muted);
}

.form-field input,
.form-field textarea {
  width: 100%;
  box-sizing: border-box;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.55);
  color: var(--ink);
  font: inherit;
  line-height: 1.5;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--accent-deep);
  background: #fff;
}

.form-field textarea {
  resize: vertical;
  min-height: 10rem;
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--muted);
}

.form-actions {
  margin-top: 0.35rem;
}

.form-actions .btn {
  border: none;
  cursor: pointer;
  font: inherit;
}

.form-errors {
  margin: 0 0 1rem;
  padding: 0.9rem 1rem;
  border-left: 3px solid var(--accent-deep);
  background: rgba(160, 70, 50, 0.06);
  color: var(--ink);
}

.form-errors ul {
  margin: 0;
  padding-left: 1.1rem;
}

.form-errors li + li {
  margin-top: 0.25rem;
}

.form-success {
  margin: 1rem 0 0;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 1.02rem;
}

.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.note {
  font-size: 0.9rem;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem 1.25rem 2.5rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

.footer-brand {
  font-family: var(--font-display);
  color: var(--ink-soft);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 820px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 1.25rem 1.25rem;
    background: rgba(247, 250, 251, 0.98);
    border-bottom: 1px solid var(--line);
  }

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

  .nav-links li {
    border-top: 1px solid var(--line);
  }

  .nav-links a {
    display: block;
    padding: 0.9rem 0;
  }

  .nav-cta {
    border-radius: 0.6rem;
    margin-top: 0.5rem;
  }

  .service-item {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

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

  .plan-table th,
  .plan-table td {
    display: block;
    width: 100%;
    padding: 0.45rem 0;
  }

  .plan-table tr {
    display: block;
    padding: 1rem 0;
    border-bottom: 1px solid var(--line);
  }

  .plan-table th {
    border: 0;
    padding-bottom: 0.25rem;
  }

  .plan-table td {
    border: 0;
  }
}

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