:root {
  --night: #eaf7fc;
  --deep: #e2f2f8;
  --deep-2: #d8ebf3;
  --mist: #102a43;
  --tide: #334e68;
  --light: #efcf8a;
  --light-soft: #f6dfaa;
  --ink: #102a43;
  --line: rgba(16, 42, 67, 0.16);
  --line-strong: rgba(16, 42, 67, 0.3);
  --font-serif: "Shippori Mincho B1", "Yu Mincho", "Hiragino Mincho ProN", serif;
  --font-sans: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  --content: 1060px;
  --narrow: 740px;
}

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

html {
  scroll-behavior: smooth;
  background: var(--night);
}

body {
  margin: 0;
  color: var(--mist);
  background:
    linear-gradient(180deg, #effaff 0%, #eaf7fc 24%, #e2f2f8 64%, #eaf7fc 100%);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.95;
  letter-spacing: 0;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(16, 42, 67, 0.028) 1px, transparent 1px),
    linear-gradient(180deg, rgba(16, 42, 67, 0.02) 1px, transparent 1px);
  background-size: 92px 92px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.65), transparent 72%);
  opacity: 0.4;
}

a {
  color: inherit;
}

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

button,
summary,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid var(--light);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 16px;
  z-index: 20;
  transform: translateY(-150%);
  padding: 10px 14px;
  color: var(--ink);
  background: var(--light);
  border-radius: 6px;
  font-weight: 700;
  text-decoration: none;
}

.skip-link:focus {
  transform: translateY(0);
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: center;
  overflow: hidden;
  padding: 96px 22px 92px;
  background:
    radial-gradient(circle at 12% 18%, rgba(239, 207, 138, 0.18), transparent 24%),
    linear-gradient(180deg, #f1fbff 0%, #e3f3f9 100%);
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  height: 22vh;
  background: linear-gradient(180deg, transparent, rgba(216, 235, 243, 0.72));
}

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

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(234, 247, 252, 0.98) 0%, rgba(234, 247, 252, 0.94) 38%, rgba(234, 247, 252, 0.64) 59%, rgba(234, 247, 252, 0.08) 82%),
    linear-gradient(180deg, rgba(234, 247, 252, 0.08), rgba(216, 235, 243, 0.24));
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(100%, var(--content));
  margin: 0 auto;
}

h1,
h2,
.prose-large,
.message-thought {
  font-family: var(--font-serif);
}

h1 {
  max-width: 1060px;
  margin: 0;
  font-size: 1.85rem;
  font-weight: 500;
  line-height: 1.72;
}

h1 span,
h1 strong,
.prose span {
  display: block;
}

h1 span {
  white-space: nowrap;
}

h1 strong {
  margin-top: 12px;
  color: var(--mist);
  font-size: 2.05rem;
  font-weight: 700;
  white-space: nowrap;
}

.hero-subtitle {
  margin-top: 18px;
  color: var(--tide);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.8;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 700;
  line-height: 1.4;
  text-decoration: none;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

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

.button-primary {
  margin-top: 38px;
  color: var(--ink);
  background: var(--light);
  border-color: rgba(255, 255, 255, 0.36);
}

.button-primary:hover {
  background: var(--light-soft);
}

.section {
  position: relative;
  padding: 82px 22px;
}

.section:nth-of-type(even) {
  background: rgba(214, 235, 244, 0.72);
}

.section-inner {
  width: min(100%, var(--content));
  margin: 0 auto;
}

.section-inner.narrow {
  width: min(100%, var(--narrow));
}

.section-image {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 20px 46px rgba(16, 42, 67, 0.1);
}

.section-image img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.section-visual {
  width: min(100%, 920px);
  margin: 0 auto 36px;
}

.narrative-stack .section-image {
  margin-bottom: 34px;
}

h2 {
  margin: 0 0 34px;
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.65;
}

.prose {
  color: var(--mist);
}

.prose p {
  margin: 0;
}

.prose p + p {
  margin-top: 34px;
}

.prose-large {
  font-size: 1.35rem;
  line-height: 2;
}

.lead-section {
  padding-top: 94px;
}

.concern-list,
.plain-list,
.simple-list,
.benefit-list,
.step-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.concern-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.concern-list li {
  position: relative;
  padding: 18px 0 18px 28px;
  color: var(--mist);
  border-top: 1px solid var(--line);
}

.concern-list li:first-child {
  border-top: 0;
}

.concern-list li::before,
.plain-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 30px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--light);
}

.vessel-section,
.label-section,
.promise-section,
.closing-section {
  background:
    linear-gradient(180deg, rgba(239, 207, 138, 0.08), transparent 52%),
    #eaf7fc;
}

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

.benefit-item {
  padding: 22px 0;
  border-top: 1px solid var(--line);
  color: var(--tide);
}

.benefit-item strong,
.simple-list strong,
.step-list strong {
  display: block;
  margin-bottom: 8px;
  color: var(--mist);
  font-family: var(--font-serif);
  font-size: 1.16rem;
  font-weight: 600;
  line-height: 1.7;
}

.benefit-item-strong {
  padding: 28px 0;
  border-top-color: var(--line-strong);
}

.benefit-item-strong strong {
  color: var(--mist);
  font-size: 1.38rem;
}

.step-list {
  display: grid;
  gap: 18px;
}

.step-list li {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  color: var(--tide);
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--ink);
  background: var(--light);
  border-radius: 50%;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1;
}

.section-cta {
  margin-top: 34px;
}

.simple-list {
  display: grid;
  gap: 26px;
}

.simple-list li {
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--tide);
}

.plain-list {
  display: grid;
  gap: 17px;
}

.plain-list li {
  position: relative;
  padding-left: 27px;
}

.plain-list li::before {
  top: 14px;
}

.editor-layout {
  display: grid;
  gap: 42px;
}

.editor-photo-frame {
  width: min(100%, 240px);
  margin: 0 auto;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  overflow: hidden;
  background: var(--deep-2);
}

.editor-photo-frame img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.message-thought {
  color: var(--mist);
  font-size: 1.28rem;
  font-weight: 500;
  line-height: 2.1;
  writing-mode: horizontal-tb;
}

.consultation-section {
  text-align: center;
}

.consultation-section .section-cta {
  margin-top: 28px;
}

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

details {
  border-top: 1px solid var(--line);
}

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

summary {
  cursor: pointer;
  padding: 20px 36px 20px 0;
  color: var(--mist);
  font-weight: 700;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "+";
  float: right;
  width: 28px;
  height: 28px;
  margin-right: -36px;
  color: var(--mist);
  font-size: 1.35rem;
  line-height: 1.2;
  text-align: center;
}

details[open] summary::after {
  content: "−";
}

.faq-answer {
  padding-bottom: 20px;
  color: var(--tide);
  line-height: 2;
}

.faq-answer p {
  margin: 0;
}

.closing-section {
  padding-top: 102px;
  padding-bottom: 96px;
}

.closing-section strong {
  color: var(--mist);
  font-weight: 600;
}

.site-footer {
  display: grid;
  gap: 16px;
  padding: 42px 22px 96px;
  color: var(--tide);
  background: #dceef5;
  border-top: 1px solid var(--line);
  text-align: center;
}

.site-footer p {
  margin: 0;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px 22px;
}

.site-footer a {
  color: var(--mist);
  text-decoration-color: rgba(16, 42, 67, 0.36);
  text-underline-offset: 4px;
}

.sticky-cta {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 14px;
  z-index: 10;
  display: none;
  justify-content: center;
  align-items: center;
  min-height: 50px;
  padding: 12px 16px;
  color: var(--ink);
  background: var(--light);
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 6px;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
  box-shadow: 0 12px 26px rgba(6, 17, 28, 0.35);
}

.sticky-cta.is-visible {
  display: flex;
}

@media (min-width: 760px) {
  body {
    font-size: 17px;
  }

  .hero {
    padding: 112px 40px 104px;
  }

  h1 {
    font-size: 2.35rem;
    line-height: 1.6;
  }

  h1 strong {
    font-size: 2.85rem;
  }

  .section {
    padding: 108px 40px;
  }

  h2 {
    font-size: 2.05rem;
  }

  .concern-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 46px;
  }

  .concern-list li:nth-child(2) {
    border-top: 0;
  }

  .benefit-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 34px;
  }

  .benefit-item-strong {
    grid-column: span 3;
    max-width: 760px;
  }

  .three-column {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
  }

  .editor-layout {
    grid-template-columns: 240px minmax(0, 1fr);
    align-items: start;
  }

  .editor-photo-frame {
    margin: 0;
  }

}

@media (min-width: 1120px) {
  body {
    font-size: 18px;
  }

  .hero {
    padding-left: 56px;
    padding-right: 56px;
  }

  h1 {
    font-size: 3rem;
  }

  h1 strong {
    font-size: 3.5rem;
  }

}

@media (max-width: 719px) {
  .hero {
    display: block;
    min-height: auto;
    padding: 0 0 68px;
    overflow: visible;
  }

  .hero::after,
  .hero-media::after {
    display: none;
  }

  .hero-media {
    position: relative;
    inset: auto;
    width: 100%;
    aspect-ratio: 1875 / 839;
    background: var(--deep);
  }

  .hero-media img {
    width: 100%;
    height: auto;
    aspect-ratio: 1875 / 839;
    object-fit: contain;
    object-position: center;
  }

  .hero-content {
    padding: 38px 22px 0;
  }

  h1 span,
  h1 strong {
    white-space: normal;
  }
}

@media (max-width: 520px) {
  .hero {
    padding-bottom: 62px;
  }

  h1 {
    max-width: none;
    font-size: 1.08rem;
    line-height: 2.05;
  }

  h1 strong {
    font-size: 1.5rem;
    line-height: 1.6;
  }

  .hero-subtitle {
    max-width: none;
    font-size: 0.84rem;
  }

  .button {
    width: 100%;
  }

  .section {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  h2 {
    font-size: 1.48rem;
  }

  .prose-large {
    font-size: 1.16rem;
  }

  .benefit-item-strong strong {
    font-size: 1.18rem;
  }

  .step-list li {
    grid-template-columns: 38px 1fr;
    gap: 13px;
  }

  .step-list li::before {
    width: 38px;
    height: 38px;
  }

}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

}