@charset "UTF-8";
/* ==========================================================================
   TOIRA株式会社 — corporate site
   Palette (water family, low chroma):
     水縹 mizuhanada  --primary   oklch(0.46 0.06 240)
     藍鉄 aitetsu     --deep      oklch(0.35 0.045 240)
     白磁 hakuji      --wash      oklch(0.97 0.008 225)
     墨   sumi(blue)  --ink       oklch(0.25 0.02 240)
   Type: Shippori Mincho B1 (headings) / Zen Kaku Gothic New (body)
   ========================================================================== */

:root {
  --bg:       oklch(0.995 0.002 225);
  --wash:     oklch(0.97 0.008 225);
  --ink:      oklch(0.25 0.02 240);
  --muted:    oklch(0.43 0.022 240);
  --primary:  oklch(0.46 0.06 240);
  --deep:     oklch(0.35 0.045 240);
  --hairline: oklch(0.885 0.012 230);
  --on-dark:  oklch(0.985 0.003 230);

  --font-display: "Shippori Mincho B1", "Noto Serif SC", serif;
  --font-body: "Zen Kaku Gothic New", "Noto Sans SC", sans-serif;

  --pad-x: clamp(1.25rem, 5vw, 4rem);
  --measure: 66ch;
  --wrap: 72rem;

  --ease-out: cubic-bezier(0.19, 1, 0.22, 1);

  --z-header: 50;
  --z-overlay: 40;
  --z-skip: 100;
}

body[data-lang="zh"] {
  --font-display: "Noto Serif SC", "Shippori Mincho B1", serif;
  --font-body: "Noto Sans SC", "Zen Kaku Gothic New", sans-serif;
}

/* CJK tracking does not suit Latin body text */
body[data-lang="en"] { letter-spacing: 0; }

/* ---------- base ---------- */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

section[id] { scroll-margin-top: 5rem; }

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: 0.02em;
}

::selection { background: color-mix(in oklch, var(--primary) 22%, transparent); }

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

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

h1, h2, h3 { font-family: var(--font-display); font-weight: 600; text-wrap: balance; }

/* proportional CJK metrics for display type — tightens かな and punctuation */
h1, h2, h3, .hi-name, .flow-no, .footer-name { font-feature-settings: "palt"; }
body[data-lang="en"] :is(h1, h2, h3, .hi-name) { font-feature-settings: normal; }

ul, ol { list-style: none; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: var(--z-skip);
  background: var(--ink); color: var(--on-dark); padding: 0.6em 1.2em;
}
.skip-link:focus { left: 0; }

:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }

/* ---------- header ---------- */

.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: var(--z-header);
  color: var(--ink);
  background: color-mix(in oklch, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}
.site-header.is-solid {
  background: color-mix(in oklch, var(--bg) 94%, transparent);
  box-shadow: 0 1px 0 var(--hairline);
}

.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.85rem var(--pad-x);
  gap: 1.5rem;
}

.brand { display: flex; align-items: center; min-width: 0; position: relative; z-index: calc(var(--z-header) + 10); }

.brand-logo {
  height: 44px;
  width: auto;
  display: block;
}

.global-nav { display: flex; align-items: center; gap: 1.8rem; }
.global-nav ul { display: flex; gap: 1.7rem; align-items: center; }
.global-nav a {
  font-size: 0.9rem; letter-spacing: 0.07em; position: relative; padding: 0.4em 0;
}
.global-nav a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0;
  height: 1px; background: var(--primary);
  transition: right 0.3s var(--ease-out);
}
.global-nav a:hover::after { right: 0; }

.nav-contact {
  border: 1px solid var(--primary);
  color: var(--primary);
  padding: 0.42em 1.15em !important;
  transition: background 0.25s, color 0.25s;
}
.nav-contact::after { display: none; }
.nav-contact:hover { background: var(--primary); color: var(--on-dark); }

.lang-switch { display: flex; align-items: center; }
.lang-switch a {
  font: inherit; font-size: 0.8rem; letter-spacing: 0.05em;
  color: inherit; opacity: 0.55; padding: 0.3em 0.6em;
  transition: opacity 0.2s;
}
.lang-switch a + a { border-left: 1px solid var(--hairline); }
.lang-switch a[aria-current="true"] { opacity: 1; font-weight: 700; color: var(--primary); }
.lang-switch a:hover { opacity: 1; }
.lang-switch a::after { display: none; }

.menu-toggle { display: none; }

/* ---------- hero ---------- */

.hero {
  padding: clamp(6.5rem, 14vh, 9.5rem) var(--pad-x) 0;
  border-bottom: 1px solid var(--hairline);
}

.hero-grid {
  max-width: var(--wrap);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 11fr) minmax(0, 9fr);
  gap: clamp(2.5rem, 6vw, 5.5rem);
  align-items: center;
}

.hero-copy { animation: rise 1s 0.1s var(--ease-out) both; }

.hero-title {
  font-size: clamp(1.95rem, 3.35vw, 2.9rem);
  font-weight: 600;
  line-height: 1.6;
  letter-spacing: 0.05em;
}

body[data-lang="en"] .hero-title {
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  line-height: 1.34;
  letter-spacing: 0;
}
body[data-lang="en"] .btn-solid,
body[data-lang="en"] .btn-line { letter-spacing: 0.04em; padding-inline: 1.9em; }
body[data-lang="en"] .section-title { letter-spacing: 0.02em; }
body[data-lang="en"] .contact-title { letter-spacing: 0.02em; }

.hero-lede {
  margin-top: 1.8rem;
  color: var(--muted);
  font-size: clamp(0.96rem, 1.3vw, 1.05rem);
  max-width: 38rem;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2.6rem; }

.btn-solid {
  display: inline-block;
  background: var(--primary);
  color: var(--on-dark);
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.1em;
  padding: 0.95em 2.6em;
  border: 1px solid var(--primary);
  transition: background 0.25s, border-color 0.25s;
}
.btn-solid:hover { background: var(--deep); border-color: var(--deep); }

.btn-line {
  display: inline-block;
  border: 1px solid var(--hairline);
  color: var(--ink);
  font-size: 0.92rem;
  letter-spacing: 0.1em;
  padding: 0.95em 2.2em;
  transition: border-color 0.25s, color 0.25s;
}
.btn-line:hover { border-color: var(--primary); color: var(--primary); }

.hero-media {
  position: relative;
  animation: rise 1s 0.3s var(--ease-out) both;
}
.hero-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.78);
}
.hero-media::after {
  content: ""; position: absolute; inset: 0;
  background: oklch(0.5 0.06 235 / 0.14);
  mix-blend-mode: multiply;
  pointer-events: none;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: none; }
}

/* business index under the hero */
.hero-index {
  max-width: var(--wrap);
  margin: clamp(3rem, 7vh, 4.5rem) auto 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--hairline);
  animation: rise 1s 0.5s var(--ease-out) both;
}
.hero-index a {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 0.9rem;
  align-items: baseline;
  padding: 1.6rem 1.4rem 1.8rem 0;
  transition: color 0.25s;
}
.hero-index a + a { border-left: 1px solid var(--hairline); padding-left: 1.6rem; }
.hi-no {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--primary);
  grid-row: 1 / 3;
  align-self: start;
  padding-top: 0.25rem;
}
.hi-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.04rem;
  letter-spacing: 0.05em;
}
.hi-sub { grid-column: 2; font-size: 0.8rem; color: var(--muted); letter-spacing: 0.03em; }
.hero-index a:hover .hi-name { color: var(--primary); }

/* ---------- section head with vertical label ---------- */

.section-head {
  position: relative;
  max-width: var(--wrap);
  margin: 0 auto clamp(2.6rem, 6vw, 4rem);
  padding: 0 var(--pad-x);
}

.tate-label {
  writing-mode: vertical-rl;
  font-family: "Shippori Mincho B1", serif;
  font-size: 0.78rem;
  letter-spacing: 0.4em;
  color: var(--primary);
  border-left: 1px solid var(--hairline);
  padding-left: 0.85rem;
  position: absolute;
  left: calc(var(--pad-x) - 2.5rem);
  top: 0.35rem;
  height: 9rem;
}

.section-title {
  font-size: clamp(1.7rem, 3.2vw, 2.4rem);
  letter-spacing: 0.09em;
  font-weight: 600;
}
.section-title::after {
  content: "";
  display: block;
  width: 2.8rem; height: 2px;
  background: var(--primary);
  margin-top: 1rem;
}

.section-sub { margin-top: 1.3rem; color: var(--muted); font-size: 0.94rem; max-width: var(--measure); }

/* ---------- about ---------- */

.about { padding: clamp(5rem, 11vw, 8rem) 0 clamp(4.5rem, 9vw, 7rem); }

.about-inner { max-width: var(--wrap); margin: 0 auto; }

.about-body {
  padding: 0 var(--pad-x);
  max-width: calc(var(--measure) + 2 * var(--pad-x));
  color: var(--ink);
  font-size: 1rem;
  text-wrap: pretty;
}

.about-points {
  margin: clamp(2.5rem, 5vw, 3.5rem) auto 0;
  padding: 0 var(--pad-x);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
}
.about-points > div {
  border-top: 2px solid var(--primary);
  padding-top: 1.2rem;
}
.about-points dt {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.06rem;
  letter-spacing: 0.06em;
  margin-bottom: 0.6rem;
}
.about-points dd { color: var(--muted); font-size: 0.9rem; }

/* ---------- services ---------- */

.services { padding: clamp(4.5rem, 10vw, 7.5rem) 0; background: var(--wash); }

.service {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(2.2rem, 5vw, 4rem) var(--pad-x);
}
.service:nth-of-type(even) .service-media { order: 2; }

.service-media { position: relative; }
.service-media img {
  width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover;
  filter: saturate(0.78);
}
.service-media::after {
  content: ""; position: absolute; inset: 0;
  background: oklch(0.5 0.06 235 / 0.14);
  mix-blend-mode: multiply;
  pointer-events: none;
}

.service-stamp {
  display: flex; align-items: center; gap: 0.7rem;
  color: var(--primary);
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  margin-bottom: 1.1rem;
}
.service-stamp span {
  display: grid; place-items: center;
  width: 2.1rem; height: 2.1rem;
  border: 1px solid color-mix(in oklch, var(--primary) 55%, transparent);
  font-family: "Shippori Mincho B1", serif;
  font-size: 1rem;
  letter-spacing: 0;
}

.service-body h3 {
  font-size: clamp(1.4rem, 2.4vw, 1.8rem);
  letter-spacing: 0.07em;
  margin-bottom: 1.2rem;
  font-weight: 600;
}

.service-desc { color: var(--muted); font-size: 0.95rem; max-width: 54ch; text-wrap: pretty; }

/* B2B meta rows: who it's for / typical requests */
.service-target, .service-consult {
  margin-top: 1.4rem;
  font-size: 0.88rem;
  color: var(--muted);
  display: flex; flex-direction: column; gap: 0.25rem;
}
.st-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--primary);
}
.service-consult { margin-top: 1.5rem; }

.service-cta {
  display: inline-flex; align-items: center; gap: 0.6em;
  margin-top: 1.6rem;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--primary);
  border: 1px solid var(--primary);
  padding: 0.7em 1.6em;
  transition: background 0.25s, color 0.25s;
}
.service-cta::after { content: "→"; font-family: var(--font-body); }
.service-cta:hover { background: var(--primary); color: var(--on-dark); }

.service-list { margin-top: 1.4rem; border-top: 1px solid var(--hairline); }
.service-list li {
  padding: 0.8em 0.2em;
  border-bottom: 1px solid var(--hairline);
  font-size: 0.91rem;
  letter-spacing: 0.04em;
  display: flex; align-items: baseline; gap: 0.8em;
}
.service-list li::before {
  content: "";
  width: 0.5em; height: 1px;
  background: var(--primary);
  flex: none;
  transform: translateY(-0.3em);
}

/* ---------- flow ---------- */

.flow { padding: clamp(5rem, 11vw, 8rem) 0 clamp(4.5rem, 9vw, 7rem); }

.flow-steps {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: clamp(1.2rem, 2.5vw, 2rem);
  counter-reset: step;
}
.flow-steps li { position: relative; padding-top: 1.3rem; border-top: 1px solid var(--hairline); }
.flow-steps li::before {
  content: ""; position: absolute; top: -1px; left: 0;
  width: 2.2rem; height: 2px; background: var(--primary);
}
.flow-no {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--primary);
  line-height: 1;
  display: block;
  margin-bottom: 0.7rem;
}
.flow-steps h3 {
  font-size: 1.02rem;
  letter-spacing: 0.06em;
  margin-bottom: 0.55rem;
  font-weight: 600;
}
.flow-steps p { font-size: 0.84rem; color: var(--muted); line-height: 1.85; }

/* ---------- quality ---------- */

.quality { padding: clamp(4.5rem, 10vw, 7.5rem) 0; background: var(--wash); }

.quality-inner { max-width: var(--wrap); margin: 0 auto; }

.quality-list {
  padding: 0 var(--pad-x);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.8rem, 4vw, 3rem) clamp(2rem, 5vw, 4rem);
}
.quality-list > div { border-top: 1px solid var(--hairline); padding-top: 1.2rem; }
.quality-list dt {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.05em;
  margin-bottom: 0.55rem;
}
.quality-list dd { color: var(--muted); font-size: 0.9rem; max-width: 52ch; }

/* ---------- company ---------- */

.company { padding: clamp(5rem, 11vw, 8rem) 0 clamp(4rem, 8vw, 6rem); }

.company-table {
  max-width: 46rem;
  margin: 0 auto;
  padding: 0 var(--pad-x);
}
.company-table > div {
  display: grid;
  grid-template-columns: 9em 1fr;
  gap: 1.5rem;
  padding: 1.05rem 0.3rem;
  border-bottom: 1px solid var(--hairline);
}
.company-table > div:first-child { border-top: 1px solid var(--ink); }
.company-table dt { font-weight: 700; letter-spacing: 0.1em; font-size: 0.9rem; }
.company-table dd { color: var(--ink); font-size: 0.94rem; font-variant-numeric: tabular-nums; }


/* ---------- news ---------- */

.news { padding: 0 0 clamp(5rem, 10vw, 7.5rem); }

.news-list {
  max-width: 46rem;
  margin: 0 auto;
  padding: 0 var(--pad-x);
}
.news-list li {
  display: flex; align-items: baseline; gap: 1.4rem;
  padding: 1.1rem 0.3rem;
  border-bottom: 1px solid var(--hairline);
  flex-wrap: wrap;
}
.news-list li:first-child { border-top: 1px solid var(--ink); }
.news-list time { font-size: 0.85rem; letter-spacing: 0.08em; color: var(--muted); flex: none; font-variant-numeric: tabular-nums; }
.news-tag {
  flex: none;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--primary);
  border: 1px solid color-mix(in oklch, var(--primary) 45%, transparent);
  padding: 0.1em 0.9em;
}
.news-list p { font-size: 0.92rem; }

/* ---------- contact ---------- */

.contact {
  background: var(--wash);
  border-top: 1px solid var(--hairline);
  padding: clamp(4.5rem, 10vw, 7.5rem) 0;
}

.contact-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(2.5rem, 6vw, 5rem);
  padding: 0 var(--pad-x);
  align-items: start;
}

.contact-info .section-head { padding: 0; margin-bottom: 1.8rem; }
.contact-info .tate-label { left: -2.5rem; }

.contact-lede { color: var(--muted); font-size: 0.95rem; max-width: 44ch; text-wrap: pretty; }

.contact-direct { margin-top: 2.4rem; border-top: 1px solid var(--hairline); }
.cd-row {
  display: flex; flex-direction: column; gap: 0.1rem;
  padding: 1rem 0.2rem;
  border-bottom: 1px solid var(--hairline);
}
.cd-label { font-size: 0.78rem; letter-spacing: 0.16em; color: var(--muted); }
.cd-value { font-family: var(--font-display); font-size: 1.15rem; letter-spacing: 0.05em; }
a.cd-value:hover { color: var(--primary); }
.cd-pending { color: var(--muted); font-size: 0.95rem; }

/* form */
.contact-form { display: flex; flex-direction: column; gap: 1.3rem; }

.field label {
  display: flex; align-items: center; gap: 0.6rem;
  font-size: 0.88rem; font-weight: 700; letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}
.req {
  font-style: normal; font-weight: 700;
  font-size: 0.68rem; letter-spacing: 0.1em;
  color: var(--on-dark);
  background: var(--primary);
  padding: 0.1em 0.7em;
}

.field input[type="text"],
.field input[type="email"],
.field select,
.field textarea {
  width: 100%;
  font: inherit;
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--hairline);
  border-radius: 0;
  padding: 0.75em 1em;
  transition: border-color 0.2s;
}
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 1.3em) 50%, calc(100% - 1em) 50%; background-size: 0.32em 0.32em; background-repeat: no-repeat; }
.field textarea { resize: vertical; min-height: 8.5em; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--primary);
}

.field-consent {
  display: flex; align-items: baseline; gap: 0.7rem; flex-wrap: wrap;
  font-size: 0.88rem;
}
.field-consent label { display: inline; font-weight: 400; letter-spacing: 0.03em; margin: 0; }
.field-consent input { accent-color: var(--primary); width: 1.05em; height: 1.05em; transform: translateY(0.15em); }
.consent-link {
  color: var(--primary); font-size: 0.82rem; letter-spacing: 0.04em;
  text-decoration: underline; text-underline-offset: 3px;
}

.btn-submit { cursor: pointer; align-self: flex-start; font-family: inherit; }
.mail-note { font-size: 0.78rem; color: var(--muted); letter-spacing: 0.03em; }

/* ---------- legal (privacy) ---------- */

.legal { padding: clamp(7rem, 16vh, 10rem) var(--pad-x) clamp(4rem, 9vw, 6rem); }
.legal-inner { max-width: 44rem; margin: 0 auto; }
.legal h1 {
  font-size: clamp(1.7rem, 3.2vw, 2.3rem);
  letter-spacing: 0.09em;
  margin-bottom: 2rem;
}
.legal h1::after {
  content: ""; display: block;
  width: 2.8rem; height: 2px;
  background: var(--primary);
  margin-top: 1rem;
}
.legal-intro { color: var(--ink); margin-bottom: 2.5rem; font-size: 0.96rem; }
.legal h2 {
  font-size: 1.08rem;
  letter-spacing: 0.06em;
  margin: 2.2rem 0 0.7rem;
  font-weight: 600;
}
.legal p { color: var(--muted); font-size: 0.93rem; }
.legal-date { margin-top: 3rem; font-size: 0.85rem; }
.legal-back { margin-top: 1.2rem; }
.legal-back a { color: var(--primary); font-size: 0.9rem; letter-spacing: 0.06em; text-decoration: underline; text-underline-offset: 4px; }

/* ---------- footer ---------- */

.site-footer {
  background: oklch(0.24 0.028 240);
  color: oklch(0.88 0.008 235);
  padding: clamp(3.5rem, 7vw, 5rem) var(--pad-x) 2rem;
}

.footer-inner {
  display: flex; justify-content: space-between; gap: 3rem; flex-wrap: wrap;
  max-width: var(--wrap); margin: 0 auto 3.5rem;
}

.footer-logo {
  height: 38px; width: auto; display: block;
  margin-bottom: 1.1rem;
}

.footer-name { font-family: var(--font-display); font-size: 1.05rem; letter-spacing: 0.08em; font-weight: 600; }
.footer-tagline { font-size: 0.82rem; color: oklch(0.7 0.012 235); margin-top: 0.5rem; letter-spacing: 0.04em; }
.footer-addr { font-size: 0.82rem; color: oklch(0.7 0.012 235); margin-top: 0.35rem; letter-spacing: 0.04em; }
.footer-addr a { color: inherit; }
.footer-addr a:hover { color: var(--on-dark); }

.footer-nav { display: flex; flex-direction: column; gap: 0.65rem; }
.footer-nav a { font-size: 0.87rem; letter-spacing: 0.09em; color: oklch(0.78 0.01 235); transition: color 0.2s; }
.footer-nav a:hover { color: var(--on-dark); }

.copyright {
  text-align: center;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: oklch(0.62 0.012 235);
  border-top: 1px solid oklch(0.32 0.02 240);
  padding-top: 1.8rem;
  max-width: var(--wrap); margin: 0 auto;
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-copy, .hero-media, .hero-index { animation: none; }
}

/* ---------- responsive ---------- */

@media (max-width: 1120px) {
  .tate-label { position: static; height: auto; writing-mode: horizontal-tb; border-left: none; padding-left: 0; display: block; letter-spacing: 0.3em; margin-bottom: 0.8rem; }
  .contact-info .tate-label { left: auto; }
}

@media (max-width: 900px) {
  /* backdrop-filter would make the header the containing block for the
     fixed-position nav overlay, so it must come off at this width */
  .site-header {
    backdrop-filter: none;
    background: color-mix(in oklch, var(--bg) 96%, transparent);
  }
  .site-header.is-open { background: var(--bg); }

  .global-nav {
    position: fixed; inset: 0; z-index: var(--z-overlay);
    background: color-mix(in oklch, var(--bg) 97%, transparent);
    backdrop-filter: blur(14px);
    flex-direction: column; justify-content: center; gap: 3rem;
    visibility: hidden; opacity: 0;
    transition: opacity 0.3s ease, visibility 0.3s;
  }
  .site-header.is-open .global-nav { visibility: visible; opacity: 1; }
  .global-nav ul { flex-direction: column; text-align: center; gap: 1.5rem; }
  .global-nav a { font-size: 1.08rem; }

  .menu-toggle {
    display: flex; align-items: center; gap: 0.7rem;
    z-index: calc(var(--z-header) + 10); position: relative;
    appearance: none; background: none; border: none; cursor: pointer;
    color: inherit; font: inherit; font-size: 0.8rem; letter-spacing: 0.2em;
    padding: 0.5rem;
  }
  .menu-toggle-bar {
    display: block; width: 26px; height: 1px; background: currentColor; position: relative;
    transition: background 0.2s;
  }
  .menu-toggle-bar::before, .menu-toggle-bar::after {
    content: ""; position: absolute; left: 0; width: 26px; height: 1px; background: currentColor;
    transition: transform 0.3s var(--ease-out);
  }
  .menu-toggle-bar::before { top: -8px; }
  .menu-toggle-bar::after { top: 8px; }
  .site-header.is-open .menu-toggle-bar { background: transparent; }
  .site-header.is-open .menu-toggle-bar::before { transform: translateY(8px) rotate(45deg); }
  .site-header.is-open .menu-toggle-bar::after { transform: translateY(-8px) rotate(-45deg); }

  .hero { padding-top: 6rem; }
  .hero-grid { grid-template-columns: 1fr; gap: 2.2rem; }
  .hero-media img { aspect-ratio: 16 / 9; }
  .hero-index { grid-template-columns: 1fr; border-top: none; }
  .hero-index a { border-top: 1px solid var(--hairline); padding: 1.1rem 0; }
  .hero-index a + a { border-left: none; padding-left: 0; }

  .about-points { grid-template-columns: 1fr; gap: 1.6rem; }

  .service { grid-template-columns: 1fr; gap: 1.8rem; }
  .service:nth-of-type(even) .service-media { order: 0; }

  .flow-steps { grid-template-columns: 1fr; gap: 1.4rem; }
  .flow-steps li { display: grid; grid-template-columns: auto 1fr; column-gap: 1.1rem; align-items: baseline; }
  .flow-no { grid-row: 1 / 3; margin: 0; }
  .flow-steps p { grid-column: 2; }

  .quality-list { grid-template-columns: 1fr; gap: 1.6rem; }

  .contact-inner { grid-template-columns: 1fr; gap: 3rem; }

  .footer-inner { flex-direction: column; gap: 2.5rem; }
}

@media (max-width: 560px) {
  .brand-logo { height: 36px; }
  .company-table > div { grid-template-columns: 1fr; gap: 0.15rem; padding: 0.9rem 0.2rem; }
  .news-list li { gap: 0.8rem; }
  .news-list p { flex-basis: 100%; }
  .hero-actions .btn-solid, .hero-actions .btn-line { flex: 1 1 auto; text-align: center; }
}