:root {
  --ink: #151513;
  --ink-soft: #4a5662;
  --paper: #f7fbfc;
  --paper-strong: #ffffff;
  --night: #233d55;
  --night-2: #3e5da3;
  --gold: #be8f7a;
  --gold-light: #ebce8b;
  --teal: #3791a3;
  --blue: #3e5da3;
  --line: rgba(55, 145, 163, 0.2);
  --shadow: 0 24px 70px rgba(62, 93, 163, 0.12);
  --radius: 8px;
  --desktop-canvas: 1440px;
  --desktop-height: 900px;
  --desktop-scale: 1;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Noto Serif JP", Georgia, serif;
  line-height: 1.8;
}

.site-shell {
  position: relative;
  width: 100%;
  opacity: 0;
  animation: pageIntroIn 450ms ease 775ms forwards;
}

.site-frame {
  width: 100%;
  min-height: 100vh;
}

@media (min-width: 768px) {
  body {
    overflow-x: hidden;
  }

  .site-shell {
    min-height: var(--scaled-site-height, auto);
  }

  .site-frame {
    position: absolute;
    top: 0;
    left: 50%;
    width: var(--desktop-canvas);
    min-height: var(--desktop-height);
    transform: translateX(-50%) scale(var(--desktop-scale));
    transform-origin: top center;
  }
}

main {
  padding-bottom: 88px;
}

.site-header {
  opacity: 0;
  animation: pageIntroIn 450ms ease 775ms forwards;
}

.intro-logo {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: grid;
  place-items: center;
  color: #fff;
  background:
    radial-gradient(ellipse at 50% 45%, rgba(54, 77, 101, 0.35), transparent 65%),
    linear-gradient(135deg, #14283d, #0b1726);
  pointer-events: none;
  animation: introPanel 1.225s ease forwards;
}

.intro-logo div {
  display: grid;
  justify-items: center;
  gap: 20px;
  text-align: center;
  animation: introLogo 1.025s ease forwards;
}

.intro-logo img {
  display: block;
  width: clamp(180px, 24vw, 300px);
  height: auto;
  object-fit: contain;
}

.intro-logo small {
  color: #f1ede3;
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-size: clamp(12px, 1.2vw, 14px);
  line-height: 1.8;
  letter-spacing: 0.12em;
}

@keyframes introPanel {
  0%, 72% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    visibility: hidden;
  }
}

@keyframes pageIntroIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes introLogo {
  0% {
    opacity: 0;
    transform: translateY(16px) scale(0.96);
  }

  24%, 58% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }

  100% {
    opacity: 0;
    transform: translateY(-10px) scale(1.02);
  }
}

body.nav-open {
  overflow: hidden;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 56px);
  color: #333;
  background: linear-gradient(180deg, rgba(62, 93, 163, 0.28), rgba(62, 93, 163, 0));
  transition: background 220ms ease, box-shadow 220ms ease, padding 220ms ease;
}

@media (min-width: 768px) {
  .site-header {
    position: fixed;
    top: 0;
    right: auto;
    left: 50%;
    width: var(--desktop-canvas);
    padding: 18px 56px;
    padding-left: calc((var(--desktop-canvas) - var(--max)) / 2);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.38));
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transform: translateX(-50%) scale(var(--desktop-scale));
    transform-origin: top center;
    will-change: transform;
  }

  .site-header.is-scrolled {
    padding-top: 12px;
    padding-bottom: 12px;
  }
}

.site-header.is-scrolled {
  padding-top: 12px;
  padding-bottom: 12px;
  color: #333;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 14px 40px rgba(62, 93, 163, 0.12);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.site-header.is-scrolled .brand small {
  color: rgba(51, 51, 51, 0.72);
}

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

.brand-mark {
  display: block;
  width: auto;
  height: 39px;
  flex-shrink: 0;
  object-fit: contain;
}

.brand strong {
  display: block;
  font-size: 17px;
  line-height: 1.2;
}

.brand small {
  display: block;
  color: rgba(51, 51, 51, 0.64);
  font-size: 11px;
  line-height: 1.2;
  font-family: "Optima", "Trebuchet MS", sans-serif;
}

.site-nav {
  display: flex;
  justify-content: flex-end;
  gap: clamp(16px, 2.5vw, 34px);
  color: #23384c;
  font-size: 14px;
  font-weight: 600;
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
}

@media (min-width: 768px) {
  .site-nav {
    gap: 34px;
  }
}

.site-nav a {
  position: relative;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 1px;
  background: var(--gold-light);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

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

.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-weight: 700;
  line-height: 1.3;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.header-cta,
.button.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--teal), var(--blue));
  box-shadow: 0 14px 34px rgba(62, 93, 163, 0.2);
}

.button.ghost {
  border-color: rgba(62, 93, 163, 0.28);
  color: var(--blue);
  background: rgba(255, 255, 255, 0.62);
}

.button:hover,
.header-cta:hover {
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
}

.hero {
  position: relative;
  min-height: 92svh;
  overflow: hidden;
  color: #333;
  background: #fff;
}

@media (min-width: 768px) {
  .hero {
    min-height: var(--desktop-height);
  }
}

.hero-slides {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: scale(1.08);
  animation: heroSlideFade 24s ease-in-out infinite;
  will-change: opacity, transform;
}

.hero-slide:nth-child(1) {
  animation-delay: 0s;
}

.hero-slide:nth-child(2) {
  animation-delay: 6s;
}

.hero-slide:nth-child(3) {
  animation-delay: 12s;
}

.hero-slide:nth-child(4) {
  animation-delay: 18s;
}

@keyframes heroSlideFade {
  0% {
    opacity: 0;
    transform: scale(1.08);
  }

  8%, 25% {
    opacity: 1;
  }

  33.333% {
    opacity: 0;
    transform: scale(1);
  }

  100% {
    opacity: 0;
    transform: scale(1);
  }
}

.hero-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.96) 0%, rgba(255, 255, 255, 0.9) 30%, rgba(255, 255, 255, 0.55) 52%, rgba(255, 255, 255, 0.16) 76%, rgba(255, 255, 255, 0.02) 100%),
    linear-gradient(180deg, rgba(55, 145, 163, 0.04), rgba(255, 255, 255, 0.24));
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: min(100% - 36px, var(--max));
  min-height: 92svh;
  margin: 0 auto;
  padding: 130px 0 58px;
}

@media (min-width: 768px) {
  .hero-inner {
    width: var(--max);
    min-height: var(--desktop-height);
    padding-top: 130px;
    padding-bottom: 58px;
  }
}
.eyebrow {
  margin: 0 0 14px;
  color: var(--teal);
  font-family: "Optima", "Trebuchet MS", sans-serif;
  font-size: 12px;
  font-weight: 700;
  min-height: 26px;
  text-transform: uppercase;
}

.hero h1,
.section-heading h2,
.visual-band h2,
.sightseeing h2,
.contact-copy h2 {
  margin: 0;
  font-weight: 600;
  line-height: 1.18;
}

.hero h1 {
  max-width: 820px;
  font-size: clamp(42px, 3.7vw, 53px);
  color: var(--blue);
  text-shadow: 0 2px 0 rgba(255, 255, 255, 0.82);
}

@media (min-width: 768px) {
  .hero h1 {
    font-size: 53px;
  }
}

.heading-nowrap {
  white-space: nowrap;
}

.hero-copy {
  max-width: 650px;
  margin: 26px 0 0;
  color: #333;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.hero-facts {
  width: min(600px, 100%);
  margin: 20px 0 0;
  overflow: hidden;
}

.hero-facts img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: contain;
  /* 透過画像内の可視部分を上下中央に合わせる。 */
  transform: translateY(-1.7%);
}

.section {
  width: min(100% - 36px, var(--max));
  margin: 0 auto;
  padding: 100px 0;
}

@media (min-width: 768px) {
  .section {
    width: var(--max);
  }
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(120px, 0.18fr) minmax(0, 1.82fr);
  gap: 40px;
  align-items: start;
  margin-bottom: 44px;
}

.section-heading h2,
.visual-band h2,
.sightseeing h2,
.contact-copy h2 {
  font-size: clamp(32px, 3.05vw, 44px);
  color: var(--blue);
}

.sightseeing h2 {
  font-size: clamp(25px, 1.85vw, 26px);
}

.contact-copy h2 {
  font-size: clamp(28px, 2.12vw, 30px);
}

.section-heading h2 {
  white-space: nowrap;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.35fr);
  gap: 54px;
  align-items: start;
}

.intro-copy {
  align-self: center;
  color: var(--ink-soft);
  font-size: 17px;
}

.intro-copy p:first-child {
  margin-top: 0;
}

.service-list {
  display: grid;
  gap: 14px;
}

.service-list article,
.fleet-grid article,
.price-examples div,
.faq-grid details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.82);
}

.service-list article {
  display: grid;
  grid-template-columns: 70px 160px 1fr;
  gap: 22px;
  align-items: center;
  padding: 24px;
}

.service-list span,
.fleet-grid span,
.price-examples span {
  color: var(--teal);
  font-family: "Optima", "Trebuchet MS", sans-serif;
  font-weight: 700;
}

.service-list h3,
.fleet-grid h3,
.pricing-note h3 {
  margin: 0;
  line-height: 1.35;
}

.service-list p,
.fleet-grid p,
.price-examples p,
.pricing-note p,
.visual-band p,
.sightseeing p,
.contact-copy p,
.faq-grid p {
  margin: 10px 0 0;
  color: var(--ink-soft);
}

.visual-band,
.sightseeing {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: center;
  padding: clamp(28px, 5vw, 70px);
  color: var(--ink);
  background: #eff6f7;
}

@media (min-width: 768px) {
  .visual-band,
  .sightseeing {
    gap: 72px;
    padding: 70px;
  }
}

.visual-band > div {
  max-width: 498px;
}

.visual-band h2 {
  font-size: clamp(27px, 2vw, 29px);
  white-space: nowrap;
}

@media (min-width: 768px) {
  .visual-band h2 {
    font-size: 29px;
  }
}

.visual-band img,
.sightseeing img,
.fleet-image {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.visual-band p,
.sightseeing p {
  color: var(--ink-soft);
}

.pricing-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1fr);
  gap: 42px;
  align-items: start;
}

.pricing-note {
  align-self: center;
}

.pricing-visual {
  width: 100%;
  aspect-ratio: 16 / 7;
  margin-bottom: 22px;
  border: 1px solid rgba(55, 145, 163, 0.2);
  border-radius: var(--radius);
  object-fit: cover;
  box-shadow: 0 18px 48px rgba(62, 93, 163, 0.1);
}

.pricing-note .button {
  display: flex;
  width: fit-content;
  margin-top: 18px;
  margin-right: auto;
  margin-left: auto;
}

.price-examples {
  display: grid;
  gap: 14px;
}

.price-examples div {
  padding: 26px;
}

.price-examples strong {
  display: block;
  margin-top: 8px;
  font-size: 28px;
  line-height: 1.25;
}

.fleet {
  padding-top: 80px;
}

.fleet-image {
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.fleet-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.fleet-grid article {
  padding: 24px;
}

.sightseeing {
  grid-template-columns: minmax(320px, 0.85fr) minmax(0, 1.15fr);
  background: #eff6f7;
  color: var(--ink);
}

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

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(360px, 1fr);
  gap: 54px;
  align-items: start;
}

.contact-tel {
  margin-top: 28px;
  padding: 20px;
  border-left: 3px solid var(--teal);
  background: rgba(255, 255, 255, 0.72);
}

.contact-tel span {
  display: block;
  color: var(--ink-soft);
  font-size: 13px;
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
}

.contact-tel a {
  display: inline-block;
  margin-top: 4px;
  font-size: 28px;
  font-weight: 700;
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: clamp(22px, 4vw, 36px);
  border: 1px solid rgba(55, 145, 163, 0.28);
  border-radius: var(--radius);
  background: var(--paper-strong);
  box-shadow: var(--shadow);
}

@media (min-width: 768px) {
  .contact-form {
    padding: 36px;
  }
}

.contact-form label {
  display: grid;
  gap: 7px;
}

.contact-form span {
  font-size: 13px;
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-weight: 700;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px 14px;
  color: var(--ink);
  background: #fff;
}

.contact-form textarea {
  resize: vertical;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: 2px solid rgba(55, 145, 163, 0.28);
  border-color: var(--teal);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-submit {
  width: 100%;
  margin-top: 8px;
}

.form-status {
  min-height: 1.6em;
  margin: 0;
  color: var(--teal);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-size: 14px;
  font-weight: 700;
}

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

.faq-grid details {
  padding: 22px;
}

.faq-grid summary {
  cursor: pointer;
  font-weight: 700;
  line-height: 1.5;
}

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

.company-list div {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 28px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.company-list dt {
  color: var(--teal);
  font-weight: 700;
}

.company-list dd {
  margin: 0;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: end;
  padding: 48px clamp(18px, 4vw, 56px) 92px;
  color: rgba(255, 255, 255, 0.72);
  background: var(--teal);
}

@media (min-width: 768px) {
  .site-footer {
    padding: 48px 56px 92px;
  }
}

.site-footer strong {
  display: block;
  color: #fff;
  font-size: 20px;
}

.site-footer p {
  margin: 6px 0 0;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 16px;
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-size: 13px;
}

.site-footer small {
  grid-column: 1 / -1;
}

@media (max-width: 767px) {
  main {
    padding-bottom: 72px;
  }

  .site-header {
    grid-template-columns: auto auto;
    justify-content: space-between;
  }

  .header-cta {
    display: none;
  }

  .nav-toggle {
    display: grid;
    width: 48px;
    height: 48px;
    place-items: center;
    border: 1px solid rgba(55, 145, 163, 0.28);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.78);
    box-shadow: 0 8px 22px rgba(62, 93, 163, 0.1);
    backdrop-filter: blur(12px);
  }

  .nav-toggle span {
    grid-area: 1 / 1;
    width: 20px;
    height: 2px;
    background: var(--blue);
    transition: opacity 180ms ease, transform 180ms ease, width 180ms ease, background 180ms ease;
  }

  .nav-toggle span:first-child {
    transform: translateY(-6px);
  }

  .nav-toggle span:nth-child(3) {
    transform: translateY(6px);
  }

  .nav-toggle[aria-expanded="true"] span:first-child {
    width: 18px;
    background: var(--blue);
    transform: rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    width: 18px;
    background: var(--blue);
    transform: rotate(-45deg);
  }

  .nav-toggle[aria-expanded="true"] {
    border-color: rgba(62, 93, 163, 0.36);
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 8px 22px rgba(62, 93, 163, 0.12);
  }

  .site-nav {
    position: fixed;
    z-index: 55;
    inset: 72px 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    padding: 0;
    border-top: 1px solid rgba(55, 145, 163, 0.2);
    border-bottom: 1px solid rgba(55, 145, 163, 0.2);
    background: rgba(246, 251, 252, 0.97);
    opacity: 0;
    box-shadow: 0 20px 44px rgba(62, 93, 163, 0.18);
    backdrop-filter: blur(16px);
    transition: max-height 240ms ease, opacity 180ms ease;
  }

  .site-nav.is-open {
    max-height: 360px;
    opacity: 1;
  }

  .site-nav a {
    display: flex;
    min-height: 56px;
    align-items: center;
    justify-content: center;
    padding: 16px 24px;
    border-bottom: 1px solid rgba(55, 145, 163, 0.14);
    color: var(--blue);
    font-size: 14px;
    letter-spacing: 0;
    text-align: center;
  }

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

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

  .section-heading,
  .intro-grid,
  .pricing-layout,
  .contact-section,
  .visual-band,
  .sightseeing {
    grid-template-columns: 1fr;
  }

  .pricing-note {
    position: static;
  }

  .section-heading h2 {
    white-space: normal;
  }

  .service-list article {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .fleet-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .fleet-image {
    aspect-ratio: 4 / 3;
  }

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

  .site-footer {
    text-align: center;
  }

  .site-footer nav {
    justify-content: center;
  }
}

@media (max-width: 640px) {
  .brand strong {
    font-size: 15px;
  }

  .brand small {
    display: none;
  }

  .hero {
    display: flex;
    min-height: auto;
    flex-direction: column;
    overflow: visible;
  }

  .hero-slides {
    position: relative;
    order: 2;
    inset: auto;
    width: 100%;
    aspect-ratio: 4 / 3;
    height: auto;
    overflow: hidden;
  }

  .hero-slide {
    height: 100%;
    object-fit: cover;
    object-position: center bottom;
  }

  .hero-shade {
    display: none;
  }

  .hero-inner {
    order: 1;
    width: min(100% - 36px, var(--max));
    min-height: auto;
    padding-top: 120px;
    padding-bottom: 28px;
    text-align: center;
  }

  .hero h1 {
    font-size: 42px;
  }

  .heading-nowrap,
  .visual-band h2 {
    white-space: normal;
  }

  .hero-copy {
    max-width: 100%;
    margin-top: 18px;
    font-size: 11px;
    line-height: 1.75;
  }

  .hero-actions {
    justify-content: center;
    gap: 12px;
    margin-top: 26px;
  }

  .hero-actions .button {
    min-width: 0;
    flex: 1 1 0;
    padding-right: 12px;
    padding-left: 12px;
    text-align: center;
  }

  .hero-facts {
    display: none;
  }

  .section {
    padding: 58px 0;
  }

  .section-heading {
    gap: 10px;
    margin-bottom: 28px;
    text-align: center;
  }

  .intro-grid,
  .pricing-layout,
  .contact-section {
    gap: 28px;
  }

  .service-list,
  .price-examples {
    gap: 12px;
  }

  .visual-band,
  .sightseeing {
    gap: 24px;
    padding: 34px 18px 46px;
    text-align: center;
  }

  .visual-band p {
    font-size: 13px;
    line-height: 1.85;
  }

  .pricing {
    padding-top: 54px;
  }

  .pricing-layout {
    align-items: stretch;
  }

  .pricing-visual {
    margin-bottom: 18px;
  }

  .pricing-note p {
    font-size: 12px;
    line-height: 1.9;
  }

  .fleet {
    padding-top: 54px;
  }

  .fleet-grid {
    gap: 14px;
    margin-top: 14px;
  }

  .fleet-grid article {
    padding: 22px 20px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .site-footer {
    grid-template-columns: 1fr;
    padding-top: 42px;
  }

  .site-footer nav {
    justify-content: center;
  }

}