@font-face {
  font-family: "Inter";
  src: url("./fonts/InterVariable.woff2") format("woff2-variations");
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
}

:root {
  --color-ink: #111314;
  --color-graphite: #232628;
  --color-charcoal: #34383b;
  --color-concrete: #d9d9d6;
  --color-concrete-secondary: #d3d4d2;
  --color-surface: #ffffff;
  --color-white: #ffffff;
  --color-line: #c9c9c9;
  --color-text-secondary: #6b7075;
  --color-text-on-concrete: #232628;
  --color-difference: #d84c43;
  --asset-concrete-image: url("./images/concrete-architectural-v6.jpg");
  --font-ui: "Inter", "Noto Sans JP", "Noto Sans CJK JP", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
  --gutter: clamp(24px, 4vw, 56px);
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --container-outer: 1440px;
  --focus-ring: 0 0 0 2px var(--color-surface), 0 0 0 4px var(--color-ink);
}

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

html {
  background: var(--color-surface);
  color: var(--color-ink);
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-ui);
  font-synthesis: none;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

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

:focus-visible {
  outline: 0;
  box-shadow: var(--focus-ring);
}

[hidden] {
  display: none !important;
}

h1,
h2,
h3,
p,
figure,
blockquote {
  margin-top: 0;
}

h1,
h2,
h3 {
  font-weight: 600;
}

.container {
  width: 100%;
  max-width: var(--container-outer);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  translate: 0 -160%;
  border-radius: 6px;
  background: var(--color-ink);
  color: var(--color-white);
  font-weight: 600;
}

.skip-link:focus {
  translate: 0;
}

.site-entry {
  position: relative;
  isolation: isolate;
  background: var(--color-concrete);
}

.site-entry::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  background-image: var(--asset-concrete-image);
  background-position: center top;
  background-repeat: no-repeat;
  background-size: cover;
  content: "";
  filter: none;
  opacity: 1;
}

.site-entry::after {
  position: absolute;
  z-index: -1;
  top: 0;
  bottom: 0;
  left: 32%;
  width: 1px;
  background: rgb(17 19 20 / 10%);
  box-shadow: 40.7vw 0 0 rgb(17 19 20 / 9%);
  content: "";
  pointer-events: none;
}

.site-header {
  position: relative;
  z-index: 2;
  border-bottom: 1px solid rgb(17 19 20 / 9%);
  background: transparent;
}

.header-inner {
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.brand-link,
.footer-brand {
  display: block;
  line-height: 0;
  text-decoration: none;
}

.brand-link img {
  width: 180px;
  height: auto;
}

.language-switcher {
  display: grid;
  grid-template-columns: repeat(2, 44px);
  overflow: hidden;
  border: 1px solid rgb(17 19 20 / 42%);
  border-radius: 6px;
  background: rgb(255 255 255 / 78%);
}

.language-switcher button {
  min-height: 42px;
  border: 0;
  background: transparent;
  color: var(--color-text-on-concrete);
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
}

.language-switcher button + button {
  border-left: 1px solid rgb(17 19 20 / 20%);
}

.language-switcher button[aria-pressed="true"] {
  background: var(--color-ink);
  color: var(--color-white);
}

.hero {
  min-height: 634px;
  padding: var(--space-8) 0 var(--space-12);
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.41fr) minmax(0, 0.59fr);
  align-items: start;
  gap: 40px;
}

.hero-copy {
  max-width: 540px;
  padding-top: 34px;
  text-align: left;
}

.hero h1 {
  margin-bottom: var(--space-8);
  font-size: clamp(42px, 4vw, 58px);
  letter-spacing: -0.045em;
  line-height: 1.3;
}

.hero-line {
  display: block;
}

.hero-line + .hero-line {
  white-space: nowrap;
}

.keep-phrase {
  white-space: nowrap;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: 12px 20px;
  border: 1px solid var(--color-ink);
  border-radius: 6px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

.button-primary {
  background: var(--color-ink);
  color: var(--color-surface);
}

.button-primary:hover {
  border-color: var(--color-graphite);
  background: var(--color-graphite);
}

.availability-note {
  display: flex;
  align-items: flex-start;
  flex-direction: column;
  gap: var(--space-3);
  margin: 0 0 28px;
  color: var(--color-ink);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.5;
}

.availability-note::after {
  width: 36px;
  border-top: 2px solid var(--color-ink);
  content: "";
}

.product-figure {
  margin: 0;
}

.product-figure-hero {
  margin-top: 14px;
}

.product-frame {
  overflow: hidden;
  padding: 6px;
  border: 1px solid #94989a;
  border-radius: 10px;
  background: var(--color-white);
  box-shadow: 0 3px 7px rgb(17 19 20 / 28%), 0 14px 28px rgb(17 19 20 / 30%), 0 30px 56px rgb(17 19 20 / 18%);
}

.product-frame img {
  width: 100%;
  height: auto;
  border-radius: 3px;
}

.product-figure figcaption {
  margin: var(--space-3) 0 0;
  color: var(--color-text-on-concrete);
  font-size: 14px;
  font-weight: 500;
}

.product-figure-hero figcaption {
  text-align: right;
}

.process-band {
  background: var(--color-graphite);
  color: var(--color-surface);
  padding: var(--space-6) 0;
}

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

.band-steps li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: var(--space-4);
  min-width: 0;
  padding: 0 clamp(20px, 2.4vw, 32px);
}

.band-steps li:first-child {
  padding-left: 0;
}

.band-steps li + li {
  border-left: 1px solid rgb(255 255 255 / 20%);
}

.band-steps li:last-child {
  padding-right: 0;
}

.band-number {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgb(255 255 255 / 34%);
  border-radius: 50%;
  color: rgb(255 255 255 / 56%);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  line-height: 1;
}

.band-steps h2 {
  margin-bottom: var(--space-2);
  font-size: 18px;
  letter-spacing: -0.02em;
  line-height: 1.4;
}

.band-steps p {
  margin-bottom: 0;
  color: rgb(255 255 255 / 74%);
  font-size: 15px;
  line-height: 1.6;
}

.review-note {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin: var(--space-6) 0 0;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-line);
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.proof-section {
  background: var(--color-white);
  padding: var(--space-16) 0;
}

.proof-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  align-items: start;
  gap: clamp(48px, 7vw, 96px);
}

.problem-copy h2,
.section-heading h2,
.founder-copy h2,
.final-cta h2 {
  margin-bottom: 0;
  font-size: clamp(28px, 3vw, 36px);
  letter-spacing: -0.035em;
  line-height: 1.3;
}

.problem-copy > p {
  max-width: 560px;
  margin: var(--space-6) 0 0;
  color: var(--color-text-secondary);
  font-size: 18px;
  line-height: 1.7;
}

.eyebrow {
  margin-bottom: var(--space-3);
  color: var(--color-text-secondary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.example-panel blockquote {
  margin-bottom: var(--space-6);
  font-size: clamp(24px, 2.4vw, 30px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.55;
}

.scope-comparison {
  margin-bottom: var(--space-5);
  border-block: 1px solid var(--color-line);
}

.scope-comparison > div {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  align-items: baseline;
  gap: var(--space-5);
  padding: var(--space-4) 0;
}

.scope-comparison > div + div {
  border-top: 1px solid var(--color-line);
}

.scope-comparison .difference-row {
  border-left: 2px solid var(--color-difference);
  padding-left: var(--space-4);
}

.comparison-label {
  color: var(--color-text-secondary);
  font-size: 14px;
  font-weight: 500;
}

.difference-row .comparison-label {
  color: var(--color-ink);
}

.scope-comparison strong {
  font-size: 18px;
  font-weight: 600;
}

.example-explanation {
  margin-bottom: 0;
  color: var(--color-text-secondary);
  font-size: 17px;
  line-height: 1.75;
}

.section {
  padding: var(--space-16) 0;
}

.product-section,
.final-cta {
  background-color: var(--color-concrete);
  background-image: var(--asset-concrete-image);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.product-section {
  border-top: 1px solid var(--color-line);
}

.section-heading {
  margin-bottom: var(--space-10);
}

.product-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--space-8);
}

.product-heading p {
  max-width: 440px;
  margin: 0 0 4px;
  color: var(--color-ink);
  font-size: 15px;
  line-height: 1.6;
}

.product-section .product-figure figcaption {
  color: var(--color-ink);
}

.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-8);
}

.product-frame-small {
  padding: 4px;
  border-radius: 8px;
  box-shadow: 0 3px 7px rgb(17 19 20 / 28%), 0 14px 28px rgb(17 19 20 / 30%), 0 30px 56px rgb(17 19 20 / 18%);
}

.founder-section {
  border-top: 1px solid var(--color-line);
  background: var(--color-white);
}

.founder-intro {
  display: grid;
  grid-template-columns: minmax(260px, 0.62fr) minmax(0, 1.38fr);
  align-items: start;
  gap: clamp(48px, 8vw, 112px);
}

.founder-portrait {
  max-width: 370px;
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  background: var(--color-concrete-secondary);
  box-shadow: 0 3px 7px rgb(17 19 20 / 18%), 0 16px 34px rgb(17 19 20 / 20%);
  aspect-ratio: 4 / 5;
}

.founder-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
}

.founder-copy {
  max-width: 720px;
}

.founder-name {
  margin: var(--space-6) 0 0;
  font-size: 18px;
  font-weight: 600;
}

.founder-role {
  margin: var(--space-1) 0 var(--space-4);
  color: var(--color-text-secondary);
  font-size: 14px;
  font-weight: 500;
}

.founder-bio {
  color: var(--color-text-secondary);
  font-size: 17px;
  line-height: 1.8;
}

.founder-bio p {
  margin-bottom: 0;
}

.founder-bio p + p {
  margin-top: var(--space-4);
}

.renovation-proof {
  margin: var(--space-16) 0 0;
}

.renovation-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.renovation-image {
  position: relative;
  overflow: hidden;
  border-radius: 6px;
  background: var(--color-concrete-secondary);
  box-shadow: 0 3px 7px rgb(17 19 20 / 18%), 0 16px 34px rgb(17 19 20 / 20%);
  aspect-ratio: 4 / 3;
}

.renovation-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.renovation-image-before img {
  object-position: center 20%;
}

.renovation-image > span {
  position: absolute;
  bottom: var(--space-4);
  left: var(--space-4);
  padding: 6px 10px;
  border-radius: 4px;
  background: var(--color-ink);
  color: var(--color-white);
  font-size: 13px;
  font-weight: 600;
}

.renovation-proof figcaption {
  margin: var(--space-4) 0 0;
  color: var(--color-text-secondary);
  font-size: 14px;
}

.final-cta {
  border-top: 1px solid var(--color-line);
}

.final-cta-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(320px, 0.82fr);
  align-items: end;
  gap: clamp(48px, 8vw, 112px);
}

.final-cta h2 {
  margin-bottom: var(--space-4);
}

.final-cta-inner > div:first-child > p {
  max-width: 600px;
  margin-bottom: 0;
  color: var(--color-ink);
  font-size: 17px;
  font-weight: 500;
}

.final-cta-actions {
  display: flex;
  align-items: flex-start;
  flex-direction: column;
}

.cta-reassurance {
  max-width: 440px;
  margin: var(--space-4) 0 0;
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.6;
}

.alternate-contact {
  margin: var(--space-2) 0 0;
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 500;
}

.alternate-contact a {
  color: var(--color-ink);
}

.site-footer {
  padding: var(--space-8) 0;
  background: var(--color-graphite);
  color: var(--color-white);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: var(--space-10);
}

.footer-brand img {
  width: 132px;
  height: auto;
}

.footer-links {
  display: flex;
  gap: var(--space-6);
  color: rgb(255 255 255 / 80%);
  font-size: 13px;
}

.footer-inner > p {
  margin-bottom: 0;
  color: rgb(255 255 255 / 64%);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.legal-page .site-header {
  border-bottom: 1px solid var(--color-line);
  background: var(--color-surface);
}

.legal-main {
  padding: clamp(64px, 9vw, 112px) 0;
}

.legal-document {
  max-width: 992px;
}

.legal-document h1 {
  margin-bottom: var(--space-4);
  font-size: clamp(40px, 6vw, 64px);
  letter-spacing: -0.04em;
  line-height: 1.12;
}

.legal-updated {
  margin-bottom: var(--space-10);
  color: var(--color-text-secondary);
  font-size: 14px;
}

.legal-document section {
  padding: var(--space-8) 0;
  border-top: 1px solid var(--color-line);
}

.legal-document section h2 {
  margin-bottom: var(--space-4);
  font-size: 24px;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.legal-document section p {
  margin-bottom: 0;
  color: var(--color-text-secondary);
  font-size: 16px;
  line-height: 1.9;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-8);
  font-weight: 600;
}

@media (max-width: 1099px) {
  .hero {
    min-height: 0;
    padding: var(--space-8) 0 var(--space-12);
  }

  .hero-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-10);
  }

  .hero-copy {
    max-width: 720px;
    padding-top: 0;
  }

  .hero h1 {
    margin-bottom: var(--space-6);
    line-height: 1.22;
  }

  .product-figure-hero figcaption {
    text-align: left;
  }

  .product-figure-hero {
    margin-top: 0;
  }

  .proof-layout,
  .founder-intro,
  .final-cta-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .proof-layout {
    gap: var(--space-12);
  }

  .founder-intro {
    gap: var(--space-12);
  }

  .final-cta-inner {
    align-items: start;
  }
}

@media (max-width: 767px) {
  :root {
    --gutter: 20px;
  }

  .header-inner {
    min-height: 64px;
  }

  .site-entry::after {
    display: none;
  }

  .brand-link img {
    width: 138px;
  }

  .language-switcher {
    grid-template-columns: repeat(2, 40px);
  }

  .language-switcher button {
    min-height: 40px;
  }

  .hero {
    padding: var(--space-8) 0 var(--space-10);
  }

  .hero-layout {
    gap: var(--space-8);
  }

  .hero h1 {
    font-size: clamp(32px, 10vw, 40px);
    line-height: 1.22;
  }

  .hero-line + .hero-line {
    white-space: normal;
  }

  .availability-note {
    margin-bottom: var(--space-6);
    font-size: 11px;
  }

  .button {
    width: 100%;
  }

  .product-frame {
    padding: 4px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgb(17 19 20 / 13%), 0 12px 24px rgb(17 19 20 / 18%);
  }

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

  .band-steps li,
  .band-steps li:first-child,
  .band-steps li:last-child {
    padding: var(--space-5) 0;
  }

  .band-steps li:first-child {
    padding-top: 0;
  }

  .band-steps li:last-child {
    padding-bottom: 0;
  }

  .band-steps li + li {
      border-top: 1px solid rgb(255 255 255 / 20%);
    border-left: 0;
  }

  .proof-section,
  .section {
    padding: var(--space-10) 0;
  }

  .proof-layout {
    gap: var(--space-10);
  }

  .problem-copy h2,
  .section-heading h2,
  .founder-copy h2,
  .final-cta h2 {
    font-size: 28px;
  }

  .problem-copy > p {
    font-size: 17px;
  }

  .example-panel blockquote {
    font-size: 24px;
  }

  .scope-comparison > div {
    grid-template-columns: 96px minmax(0, 1fr);
  }

  .product-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: var(--space-4);
  }

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

  .screenshot-grid {
    gap: var(--space-10);
  }

  .founder-portrait {
    width: min(100%, 300px);
  }

  .founder-bio {
    font-size: 16px;
  }

  .renovation-proof {
    margin-top: var(--space-12);
  }

  .final-cta-inner {
    gap: var(--space-8);
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-5);
  }

  .footer-links {
    align-items: flex-start;
    flex-direction: column;
    gap: var(--space-3);
  }
}

@media (max-width: 359px) {
  :root {
    --gutter: 16px;
  }

  .brand-link img {
    width: 126px;
  }

  .language-switcher {
    grid-template-columns: repeat(2, 38px);
  }

  .hero h1 {
    font-size: 32px;
  }

  .scope-comparison > div {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-1);
  }
}

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

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