* {
  box-sizing: border-box;
}

:root {
  color-scheme: dark;
  --page: #07090e;
  --page-raised: #0a0d13;
  --surface: #0b0d13;
  --text: #f3f6f8;
  --muted: #adb6c0;
  --quiet: #778391;
  --blue: #23b8ed;
  --blue-soft: #9cdef3;
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.18);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 82px;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--text);
  font-family: Inter, "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

button,
input,
textarea {
  font: inherit;
}

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

img {
  max-width: 100%;
}

.container {
  width: min(1120px, calc(100% - 64px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: #00142b;
}

.header-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
}

.header-product-logo {
  display: block;
  width: 178px;
  height: 62px;
  object-fit: contain;
}

.header-right,
.desktop-nav {
  display: flex;
  align-items: center;
}

.header-right {
  gap: 23px;
}

.desktop-nav {
  gap: clamp(14px, 2vw, 25px);
}

.desktop-nav a,
.mobile-nav nav a {
  color: #c3cbd3;
  font-size: 11px;
  transition: color 160ms ease;
}

.desktop-nav a:hover,
.mobile-nav nav a:hover,
.footer-links a:hover {
  color: #fff;
}

.status-pill {
  min-height: 22px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-left: 13px;
  border-left: 1px solid rgba(255, 255, 255, 0.18);
  color: #d0d8e0;
  font-size: 10px;
  font-weight: 500;
  white-space: nowrap;
}

.status-dot {
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--blue);
}

.mobile-nav {
  display: none;
}

.hero-section {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-layout {
  min-height: 670px;
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(330px, 0.94fr);
  align-items: center;
  gap: 38px;
  padding-block: 70px 80px;
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 660px;
}

.eyebrow {
  margin: 0;
  color: #9ba8b5;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.6;
}

.eyebrow > span:first-child:not(.eyebrow-line) {
  margin-right: 12px;
  color: var(--blue-soft);
  font-family: Inter, sans-serif;
  font-size: 10px;
  letter-spacing: 0.08em;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: 0.04em;
}

.eyebrow-line {
  width: 22px;
  height: 1px;
  background: var(--blue);
}

.hero-copy h1 {
  margin: 25px 0 22px;
  color: var(--text);
  font-size: clamp(42px, 5.1vw, 66px);
  font-weight: 550;
  letter-spacing: -0.065em;
  line-height: 1.32;
}

.hero-copy h1 span {
  display: block;
  color: #a9e7fb;
}

.hero-description {
  max-width: 510px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 2.05;
}

.launch-note {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-top: 29px;
  color: #dbe3e9;
  font-size: 12px;
}

.launch-year {
  color: var(--blue-soft);
  font-family: Inter, sans-serif;
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.launch-rule {
  width: 28px;
  height: 1px;
  background: rgba(255, 255, 255, 0.25);
}

.inquiry-block {
  max-width: 470px;
  margin-top: 30px;
}

.inquiry-label {
  margin: 0 0 12px;
  color: #dce2e8;
  font-size: 11px;
  font-weight: 550;
}

.inquiry-cta {
  min-height: 48px;
  width: fit-content;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 0 16px;
  border: 1px solid rgba(35, 184, 237, 0.38);
  border-radius: 6px;
  background: rgba(35, 184, 237, 0.1);
  color: #bcecff;
  font-size: 12px;
  font-weight: 600;
  transition: background-color 180ms ease, border-color 180ms ease;
}

.inquiry-cta:hover {
  border-color: rgba(139, 220, 245, 0.55);
  background: rgba(35, 184, 237, 0.16);
}

.inquiry-cta:focus-visible,
.contact-submit:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--blue-soft);
  outline-offset: 3px;
}

.inquiry-note {
  max-width: 450px;
  margin: 12px 0 0;
  color: var(--quiet);
  font-size: 10px;
  line-height: 1.8;
}

.text-link,
.story-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 19px;
  color: #d6dde4;
  font-size: 11px;
  font-weight: 550;
}

.text-link span {
  color: var(--blue-soft);
  transition: transform 160ms ease;
}

.text-link:hover span {
  transform: translateY(2px);
}

.hero-visual {
  min-height: 420px;
  position: relative;
  display: grid;
  place-items: center;
}

.hero-ambient {
  position: absolute;
  width: min(92%, 420px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(35, 184, 237, 0.055), transparent 67%);
}

.hero-monogram {
  width: min(100%, 390px);
  aspect-ratio: 1;
  position: relative;
  overflow: hidden;
}

.hero-monogram-image {
  position: absolute;
  top: 50%;
  left: -33%;
  width: 470%;
  max-width: none;
  height: auto;
  opacity: 0.2;
  transform: translateY(-50%);
}

.hero-visual-caption {
  position: absolute;
  right: 10px;
  bottom: 15px;
  color: rgba(192, 207, 218, 0.55);
  font-family: Inter, sans-serif;
  font-size: 9px;
  letter-spacing: 0.14em;
}

.section {
  padding-block: 112px;
  border-bottom: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.68fr);
  align-items: end;
  gap: 42px;
  margin-bottom: 49px;
}

.section-heading-title h2,
.returns-heading h2,
.story-heading h2,
.faq-heading h2,
.contact-heading h2 {
  margin: 16px 0 0;
  color: var(--text);
  font-size: clamp(30px, 3.4vw, 43px);
  font-weight: 550;
  letter-spacing: -0.05em;
  line-height: 1.42;
}

.section-description,
.returns-lead {
  max-width: 440px;
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 2;
}

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

.rule-card {
  min-height: 250px;
  padding: 24px 24px 25px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.rule-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 35px;
}

.rule-number {
  color: var(--blue-soft);
  font-family: Inter, sans-serif;
  font-size: 11px;
  letter-spacing: 0.08em;
}

.rule-label {
  color: var(--quiet);
  font-size: 10px;
  font-weight: 550;
}

.rule-card h3,
.flow-step h3 {
  margin: 0 0 12px;
  color: #e9eef2;
  font-size: 17px;
  font-weight: 550;
  letter-spacing: -0.03em;
  line-height: 1.5;
}

.rule-card > p,
.flow-step > p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.95;
}

.section-footnote {
  max-width: 820px;
  margin: 21px 0 0;
  color: var(--quiet);
  font-size: 9px;
  line-height: 1.85;
}

.returns-section {
  background: var(--page-raised);
}

.returns-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.72fr);
  align-items: end;
  gap: 42px;
  margin-bottom: 42px;
}

.returns-heading h2 {
  font-size: clamp(34px, 4.4vw, 53px);
}

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

.return-card {
  min-height: 365px;
  display: flex;
  flex-direction: column;
  padding: clamp(25px, 3.4vw, 40px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.return-card-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.return-route {
  color: #b8c6d3;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.return-route > span {
  margin-inline: 5px;
  color: var(--quiet);
}

.return-mark {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  color: var(--blue-soft);
  font-family: Inter, sans-serif;
  font-size: 11px;
  font-weight: 650;
}

.return-kicker {
  margin: 30px 0 10px;
  color: var(--blue-soft);
  font-size: 10px;
  font-weight: 550;
}

.return-card h3 {
  margin: 0;
  color: var(--text);
  font-size: clamp(23px, 2.5vw, 31px);
  font-weight: 550;
  letter-spacing: -0.04em;
  line-height: 1.5;
}

.return-description {
  max-width: 490px;
  margin: 14px 0 24px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.9;
}

.return-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  padding-top: 15px;
  border-top: 1px solid var(--line);
  color: #b7c4cf;
  font-size: 10px;
}

.return-card-footer > span:last-child {
  color: var(--blue-soft);
  font-size: 16px;
}

.return-footnote {
  margin-top: 19px;
}

.flow-section {
  background: var(--page-raised);
}

.flow-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.flow-step {
  min-height: 195px;
  padding: 23px 0 0;
  border-top: 1px solid var(--line-strong);
}

.flow-number {
  color: var(--blue-soft);
  font-family: Inter, sans-serif;
  font-size: 11px;
  letter-spacing: 0.1em;
}

.flow-connector {
  width: 5px;
  height: 5px;
  display: block;
  margin: 19px 0 22px;
  border-radius: 1px;
  background: var(--blue-soft);
}

.story-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(40px, 9vw, 125px);
}

.story-heading h2 {
  margin-top: 21px;
}

.story-wordmark {
  margin: 24px 0 0;
  color: #e8edf2;
  font-size: 19px;
  font-weight: 650;
  letter-spacing: -0.04em;
}

.story-wordmark span,
.footer-wordmark span {
  color: var(--blue-soft);
  font-weight: 500;
}

.story-copy {
  max-width: 610px;
  align-self: center;
}

.story-copy > p {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 13px;
  line-height: 2.1;
}

.story-link {
  margin-top: 5px;
}

.faq-section {
  background: var(--page-raised);
}

.faq-layout {
  display: grid;
  grid-template-columns: minmax(210px, 0.65fr) minmax(0, 1.35fr);
  align-items: start;
  gap: clamp(35px, 8vw, 110px);
}

.faq-heading h2 {
  margin-top: 17px;
}

.faq-heading > p:last-child {
  max-width: 270px;
  margin: 15px 0 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.9;
}

.faq-item {
  border-top: 1px solid var(--line-strong);
}

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

.faq-item summary {
  min-height: 67px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: #e4e9ed;
  font-size: 12px;
  font-weight: 550;
  cursor: pointer;
  list-style: none;
}

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

.faq-icon {
  width: 26px;
  height: 26px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--blue-soft);
  transition: transform 180ms ease;
}

.faq-item[open] .faq-icon {
  transform: rotate(180deg);
}

.faq-item > p {
  max-width: 670px;
  margin: -2px 38px 22px 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.95;
}

.contact-section {
  scroll-margin-top: 80px;
  border-top: 1px solid var(--line);
  background: var(--page-raised);
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  align-items: start;
  gap: clamp(32px, 6vw, 84px);
}

.contact-heading h2 {
  margin: 17px 0 18px;
  font-size: clamp(31px, 4vw, 44px);
}

.contact-heading > p:last-child {
  max-width: 390px;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.95;
}

.contact-form {
  min-width: 0;
}

.contact-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 14px;
}

.contact-field {
  display: grid;
  gap: 8px;
  color: #dce2e8;
  font-size: 12px;
  font-weight: 550;
}

.contact-field > span {
  display: flex;
  align-items: center;
  gap: 8px;
}

.contact-required,
.contact-optional {
  font-size: 9px;
  font-weight: 500;
}

.contact-required {
  color: var(--blue-soft);
}

.contact-optional {
  color: var(--quiet);
}

.contact-field input,
.contact-field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  padding: 12px 13px;
  color: var(--text);
  font: inherit;
  font-weight: 400;
}

.contact-field input {
  min-height: 47px;
}

.contact-field textarea {
  min-height: 150px;
  resize: vertical;
  line-height: 1.8;
}

.contact-field input:focus-visible,
.contact-field textarea:focus-visible {
  outline: 2px solid var(--blue-soft);
  outline-offset: 2px;
}

.contact-field-wide {
  grid-column: 1 / -1;
}

.contact-honey {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.contact-privacy {
  margin: 16px 0 0;
  max-width: 620px;
  color: var(--quiet);
  font-size: 10px;
  line-height: 1.8;
}

.contact-submit {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 18px;
  padding: 0 18px;
  border: 1px solid rgba(35, 184, 237, 0.4);
  border-radius: 6px;
  background: rgba(35, 184, 237, 0.13);
  color: #c8efff;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.contact-submit:hover:not(:disabled) {
  border-color: rgba(139, 220, 245, 0.55);
  background: rgba(35, 184, 237, 0.2);
}

.contact-submit:disabled {
  opacity: 0.65;
  cursor: wait;
}

.contact-feedback {
  min-height: 1.7em;
  margin: 12px 0 0;
  font-size: 12px;
  line-height: 1.7;
}

.contact-feedback-success {
  color: #b6e9ce;
}

.contact-feedback-error {
  color: #ffb3a7;
}

.site-footer {
  padding-block: 47px 26px;
  background: #050609;
}

.footer-top,
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-top {
  padding-bottom: 31px;
  border-bottom: 1px solid var(--line);
}

.footer-wordmark {
  color: #e9edf0;
  font-size: 20px;
  font-weight: 650;
  letter-spacing: -0.04em;
}

.footer-company {
  display: flex;
  align-items: center;
  gap: 13px;
}

.footer-company-label {
  color: var(--quiet);
  font-size: 10px;
}

.company-logo {
  width: 180px;
  height: auto;
  display: block;
}

.footer-bottom {
  padding-top: 22px;
}

.footer-bottom > p {
  margin: 0;
  color: var(--quiet);
  font-size: 10px;
}

.footer-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #aab4be;
  font-size: 10px;
  transition: color 160ms ease;
}

.footer-links a span {
  color: var(--quiet);
  font-size: 9px;
}

.privacy-note {
  max-width: 520px;
  margin: 18px 0 0 auto;
  color: var(--quiet);
  font-size: 9px;
  line-height: 1.8;
  text-align: right;
}

@media (max-width: 960px) {
  .container {
    width: min(100% - 48px, 820px);
  }

  .desktop-nav {
    gap: 14px;
  }

  .desktop-nav a {
    font-size: 10px;
  }

  .hero-layout {
    grid-template-columns: minmax(0, 1fr) minmax(250px, 0.76fr);
    gap: 18px;
  }

  .hero-visual {
    min-height: 340px;
  }

  .section-heading,
  .returns-heading {
    gap: 30px;
  }

  .rule-card {
    padding-inline: 19px;
  }
}

@media (max-width: 820px) {
  .header-inner {
    min-height: 72px;
  }

  .header-product-logo {
    width: 160px;
    height: 56px;
  }

  .desktop-nav {
    display: none;
  }

  .mobile-nav {
    position: relative;
    display: block;
  }

  .mobile-nav summary {
    min-height: 38px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 10px;
    border: 1px solid var(--line-strong);
    border-radius: 5px;
    color: #dbe2e8;
    font-size: 10px;
    list-style: none;
    cursor: pointer;
  }

  .mobile-nav summary::-webkit-details-marker {
    display: none;
  }

  .menu-chevron {
    width: 7px;
    height: 7px;
    border-right: 1px solid currentColor;
    border-bottom: 1px solid currentColor;
    transform: rotate(45deg) translateY(-2px);
  }

  .mobile-nav nav {
    position: absolute;
    top: calc(100% + 9px);
    right: 0;
    min-width: 205px;
    display: grid;
    gap: 0;
    padding: 7px;
    border: 1px solid var(--line-strong);
    border-radius: 7px;
    background: #0b0d13;
  }

  .mobile-nav nav a {
    padding: 11px 10px;
  }

  .header-right {
    gap: 14px;
  }

  .hero-layout {
    min-height: 600px;
    grid-template-columns: minmax(0, 1.12fr) minmax(190px, 0.88fr);
    gap: 12px;
  }

  .hero-copy h1 {
    font-size: clamp(36px, 5.5vw, 47px);
  }

  .hero-description {
    font-size: 12px;
  }

  .hero-visual {
    min-height: 260px;
  }

  .section {
    padding-block: 88px;
  }

  .section-heading,
  .returns-heading {
    grid-template-columns: minmax(0, 1fr) minmax(220px, 0.7fr);
  }
}

@media (max-width: 680px) {
  .container {
    width: calc(100% - 40px);
  }

  .header-inner {
    min-height: 68px;
  }

  .header-product-logo {
    width: 148px;
    height: 52px;
  }

  .status-pill {
    min-height: 22px;
    gap: 6px;
    padding-left: 9px;
    font-size: 9px;
  }

  .hero-layout {
    min-height: auto;
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    padding-block: 20px 66px;
  }

  .hero-visual {
    min-height: 190px;
    order: -1;
  }

  .hero-monogram {
    width: 190px;
  }

  .hero-ambient {
    width: 230px;
  }

  .hero-visual-caption {
    right: 5px;
    bottom: 0;
    font-size: 8px;
  }

  .hero-copy {
    padding-top: 18px;
  }

  .hero-copy h1 {
    margin: 19px 0 16px;
    font-size: clamp(31px, 8.8vw, 45px);
    line-height: 1.42;
  }

  .hero-description {
    font-size: 12px;
    line-height: 1.95;
  }

  .launch-note {
    margin-top: 22px;
  }

  .inquiry-block {
    margin-top: 24px;
  }

  .inquiry-cta {
    width: 100%;
    max-width: 360px;
    justify-content: space-between;
  }

  .section-heading,
  .returns-heading,
  .story-layout,
  .faq-layout,
  .contact-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 30px;
  }

  .section-heading {
    margin-bottom: 32px;
  }

  .section-heading-title h2,
  .returns-heading h2,
  .story-heading h2,
  .faq-heading h2,
  .contact-heading h2 {
    font-size: clamp(29px, 8vw, 38px);
  }

  .rule-grid,
  .return-grid,
  .flow-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .rule-card {
    min-height: 0;
    padding: 23px;
  }

  .rule-card-top {
    margin-bottom: 24px;
  }

  .return-card {
    min-height: 340px;
    padding: 25px 22px;
  }

  .flow-grid {
    gap: 8px;
  }

  .flow-step {
    min-height: 0;
    padding-block: 20px 26px;
  }

  .flow-connector {
    margin-block: 15px 18px;
  }

  .story-layout {
    gap: 26px;
  }

  .faq-layout {
    gap: 28px;
  }

  .contact-layout {
    gap: 32px;
  }

  .contact-form-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact-field-wide {
    grid-column: auto;
  }

  .section {
    padding-block: 72px;
  }

  .footer-top,
  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-top {
    gap: 24px;
  }

  .footer-links {
    gap: 14px 18px;
  }

  .privacy-note {
    margin: 20px 0 0;
    text-align: left;
  }

  .company-logo {
    width: 158px;
  }
}

@media (max-width: 420px) {
  .header-right {
    gap: 9px;
  }

  .header-product-logo {
    width: 138px;
    height: 48px;
  }

  .status-pill {
    padding-left: 7px;
    font-size: 8px;
  }

  .mobile-nav summary {
    padding-inline: 8px;
  }
}

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

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