:root {
  --ink: #212628;
  --paper: #f4f1ea;
  --white: #fff;
  --rust: #a8462b;
  --rust-dark: #7f311f;
  --steel: #60676a;
  --line: rgba(33, 38, 40, 0.18);
  --font-jp: "Yu Gothic", "YuGothic", "BIZ UDPGothic", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  --font-en: "Arial Narrow", "Roboto Condensed", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; min-width: 320px; background: var(--paper); }

body {
  color: var(--ink);
  font-family: var(--font-jp);
  -webkit-font-smoothing: antialiased;
}

button, a { font: inherit; }

.fv {
  min-height: 100svh;
  display: grid;
  grid-template-rows: auto minmax(520px, 1fr) auto;
  background: var(--paper);
  overflow: clip;
}

.site-header {
  min-height: 84px;
  padding: 14px clamp(24px, 4vw, 70px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  background: var(--white);
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 3;
}

.brand {
  color: inherit;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  pointer-events: none;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  align-content: center;
  gap: 3px;
  padding: 7px;
  border: 1px solid var(--ink);
}

.brand-mark i { display: block; height: 5px; background: var(--ink); }
.brand-mark i:nth-child(2) { width: 76%; background: var(--rust); }
.brand-mark i:nth-child(3) { width: 52%; }

.brand-copy { display: flex; flex-direction: column; gap: 2px; }
.brand-copy strong { font-size: 1.18rem; font-weight: 700; letter-spacing: 0.08em; }
.brand-copy small,
.header-note,
.eyebrow,
.proof-line,
.image-label__index,
.side-rail,
.service-band p,
.service-band li small {
  font-family: var(--font-en);
}

.brand-copy small { color: var(--steel); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; }

.header-note { display: flex; align-items: center; gap: 18px; font-size: 0.83rem; letter-spacing: 0.08em; }
.sample-chip { color: var(--white); background: var(--ink); padding: 9px 13px; letter-spacing: 0.1em; }

.hero {
  min-height: 0;
  display: grid;
  grid-template-columns: 42px minmax(0, 1.3fr) minmax(380px, 0.9fr) 90px;
  margin: clamp(16px, 2vw, 30px) clamp(18px, 3vw, 48px) 0;
  background: var(--white);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  position: relative;
}

.side-rail {
  min-width: 0;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  font-weight: 700;
}

.side-rail--left {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--rust-dark);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.hero-image {
  min-width: 0;
  min-height: 430px;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(120deg, rgba(255,255,255,.88), rgba(255,255,255,.3) 45%, rgba(33,38,40,.06)),
    #d9dcdb;
}

.image-grid {
  position: absolute;
  inset: 0;
  opacity: 0.32;
  background-image:
    linear-gradient(rgba(33,38,40,.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(33,38,40,.15) 1px, transparent 1px);
  background-size: 42px 42px;
}

.image-grid::before,
.image-grid::after {
  content: "";
  position: absolute;
  background: rgba(33,38,40,.28);
}
.image-grid::before { width: 1px; height: 150%; left: 49%; top: -25%; transform: rotate(28deg); }
.image-grid::after { height: 1px; width: 150%; top: 56%; left: -25%; transform: rotate(-12deg); }

.image-label {
  position: absolute;
  left: clamp(22px, 4vw, 58px);
  bottom: clamp(22px, 5vh, 48px);
  display: grid;
  gap: 5px;
  padding: 17px 20px 16px;
  background: rgba(255,255,255,.94);
  border-left: 4px solid var(--rust);
}
.image-label__index { color: var(--rust-dark); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.16em; }
.image-label strong { font-size: clamp(1rem, 1.7vw, 1.28rem); letter-spacing: 0.04em; }
.image-label small { color: var(--steel); font-size: 0.78rem; }

.area-badge {
  position: absolute;
  top: 0;
  right: 0;
  width: clamp(132px, 17vw, 178px);
  padding: 13px 15px;
  color: var(--white);
  background: rgba(33,38,40,.9);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}
.area-badge small { font: 700 .75rem/1 var(--font-en); letter-spacing: .12em; color: #d4b2a8; }
.area-badge strong { font-size: .9rem; letter-spacing: .05em; white-space: nowrap; }

.copy-panel {
  min-width: 0;
  padding: clamp(38px, 5vw, 78px) clamp(30px, 4vw, 64px) clamp(30px, 5vw, 58px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-right: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 22px;
  color: var(--rust-dark);
  font-size: clamp(.72rem, .9vw, .84rem);
  font-weight: 700;
  letter-spacing: .13em;
  line-height: 1.5;
}

h1 {
  margin: 0;
  font-size: clamp(2.35rem, 4.2vw, 5.1rem);
  font-weight: 700;
  letter-spacing: .015em;
  line-height: 1.26;
}
h1 span { display: block; }
h1 span { white-space: nowrap; }
.headline-accent { color: var(--rust-dark); }

.lead {
  margin: 25px 0 0;
  font-size: clamp(1rem, 1.35vw, 1.2rem);
  font-weight: 500;
  letter-spacing: .055em;
  line-height: 1.9;
}
.mobile-break { display: none; }

.proof-line {
  margin-top: clamp(24px, 4vh, 42px);
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .08em;
}
.proof-line small { margin-right: 7px; color: var(--rust-dark); font-size: .67rem; font-weight: 700; }

.side-rail--right {
  background: var(--rust);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 20px 12px;
}
.side-rail__caption { writing-mode: vertical-rl; font-size: .75rem; }
.side-rail--right button {
  width: 62px;
  min-height: 188px;
  padding: 17px 10px;
  border: 1px solid rgba(255,255,255,.5);
  color: var(--white);
  background: transparent;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  opacity: 1;
}
.side-rail--right button span:first-child { writing-mode: vertical-rl; font-weight: 700; letter-spacing: .13em; }
.arrow { font: 400 1.4rem/1 var(--font-en); }
.side-rail--right > small { font-size: .75rem; line-height: 1.45; text-align: center; letter-spacing: .01em; }

.service-band {
  min-height: 96px;
  margin: 0 clamp(18px, 3vw, 48px) clamp(16px, 2vw, 28px);
  padding: 0 clamp(28px, 4vw, 62px);
  color: var(--white);
  background: var(--ink);
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  align-items: center;
}
.service-band p { margin: 0; color: #d4b2a8; font-size: .82rem; font-weight: 700; letter-spacing: .16em; }
.service-band ol { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); }
.service-band li { min-width: 0; padding: 4px clamp(16px, 3vw, 42px); display: grid; grid-template-columns: auto 1fr; align-items: center; column-gap: 13px; border-left: 1px solid rgba(255,255,255,.22); }
.service-band li > span { grid-row: 1 / span 2; color: #c36b50; font: 700 .78rem/1 var(--font-en); }
.service-band li strong { font-size: clamp(.95rem, 1.3vw, 1.16rem); letter-spacing: .08em; }
.service-band li small { margin-top: 3px; color: rgba(255,255,255,.56); font-size: .75rem; letter-spacing: .07em; }

@media (max-width: 1120px) {
  .fv { grid-template-rows: auto minmax(500px, 1fr) auto; }
  .hero { grid-template-columns: 36px minmax(0, 1.12fr) minmax(345px, .88fr) 78px; }
  .copy-panel { padding-left: 32px; padding-right: 30px; }
  h1 { font-size: clamp(2.3rem, 4.4vw, 3.8rem); }
  .side-rail--right button { width: 54px; }
  .service-band { grid-template-columns: 88px minmax(0, 1fr); }
  .service-band li { padding-inline: 18px; }
}

@media (max-width: 820px) {
  .fv { min-height: 100svh; display: block; overflow: visible; }
  .site-header { min-height: 70px; padding: 11px 18px; }
  .brand { gap: 10px; }
  .brand-mark { width: 34px; height: 34px; }
  .brand-copy strong { font-size: 1rem; }
  .brand-copy small { display: none; }
  .header-note > span:first-child { display: none; }
  .sample-chip { padding: 7px 9px; font-size: .69rem; }

  .hero {
    margin: 12px 12px 0;
    display: grid;
    grid-template-columns: 10px minmax(0, 1fr);
    grid-template-rows: minmax(220px, 28svh) auto auto;
    border-right: 1px solid var(--line);
  }
  .side-rail--left { grid-row: 1 / 4; grid-column: 1; font-size: .62rem; }
  .hero-image { grid-row: 1; grid-column: 2; min-height: 220px; }
  .image-label { left: 16px; bottom: 15px; padding: 11px 13px 10px; gap: 3px; }
  .image-label strong { font-size: .96rem; }
  .image-label small { font-size: .7rem; }
  .area-badge { width: 142px; padding: 10px 11px; }
  .area-badge strong { font-size: .78rem; }

  .copy-panel { grid-row: 2; grid-column: 2; padding: 23px 22px 22px; border-right: 0; }
  .eyebrow { margin-bottom: 11px; font-size: .75rem; line-height: 1.45; }
  h1 { font-size: clamp(2rem, 8.6vw, 2.65rem); line-height: 1.28; letter-spacing: 0; }
  .lead { margin-top: 14px; font-size: 1rem; line-height: 1.75; }
  .mobile-break { display: initial; }
  .proof-line { margin-top: 18px; padding-top: 13px; gap: 8px 20px; font-size: .71rem; }

  .side-rail--right {
    grid-row: 3;
    grid-column: 2;
    min-height: 62px;
    padding: 9px 14px;
    flex-direction: row;
    gap: 12px;
  }
  .side-rail__caption { display: none; }
  .side-rail--right button { width: auto; min-height: 42px; padding: 9px 14px; flex: 1; flex-direction: row; justify-content: space-between; }
  .side-rail--right button span:first-child { writing-mode: horizontal-tb; font-size: .92rem; letter-spacing: .07em; }
  .side-rail--right > small { flex: 0 0 auto; font-size: .75rem; }

  .service-band { min-height: 98px; margin: 0 12px 12px; padding: 13px 18px; display: block; }
  .service-band p { display: none; }
  .service-band ol { height: 100%; }
  .service-band li { padding: 4px 8px; grid-template-columns: 1fr; grid-template-rows: auto auto auto; row-gap: 2px; text-align: center; border-left: 1px solid rgba(255,255,255,.2); }
  .service-band li:first-child { border-left: 0; }
  .service-band li > span { grid-row: auto; font-size: .75rem; }
  .service-band li strong { font-size: .91rem; letter-spacing: .04em; }
  .service-band li small { display: none; }
}

@media (max-width: 370px) {
  .brand-copy small { display: none; }
  .sample-chip { font-size: .62rem; }
  h1 { font-size: 1.9rem; }
  .service-band li strong { font-size: .82rem; }
  .service-band li small { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; }
}