/* ============================================================
   インフォポスト 公式サイト
   ============================================================ */

:root {
  --ink: #111;
  --text: #333;
  --muted: #767676;
  --line: #e2e2e0;
  --bg: #fff;
  --bg-alt: #f4f4f2;
  --dark: #1a1a1a;
  --accent: #c8161d;
  --accent-dark: #a51117;

  --font-ja: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
  --font-en: "Helvetica Neue", Helvetica, Arial, var(--font-ja);

  --header-h: 72px;
  --container: 1160px;
  --gutter: 24px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

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

html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ja);
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: .04em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
figure { margin: 0; }
a { color: inherit; }
h1, h2, h3 { margin: 0; color: var(--ink); font-weight: 600; line-height: 1.5; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

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

.container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---------- Header ---------- */

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0);
  transition: background .3s, box-shadow .3s, height .3s;
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, .96);
  box-shadow: 0 1px 0 var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.logo-mark {
  display: block;
  width: 120px;
  height: auto;
}
.logo-sub {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
  text-transform: uppercase;
}

.global-nav ul { display: flex; align-items: center; gap: 32px; }
.global-nav a {
  font-size: 14px;
  text-decoration: none;
  color: var(--ink);
  position: relative;
}
.global-nav a:not(.nav-cta)::after {
  content: "";
  position: absolute; left: 0; bottom: -4px;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0); transform-origin: right;
  transition: transform .3s var(--ease);
}
.global-nav a:not(.nav-cta):hover::after { transform: scaleX(1); transform-origin: left; }
.global-nav .nav-cta {
  display: inline-block;
  padding: 8px 20px;
  background: var(--accent);
  color: #fff;
  transition: background .2s;
}
.global-nav .nav-cta:hover { background: var(--accent-dark); }

.nav-toggle {
  display: none;
  position: relative;
  width: 44px; height: 44px;
  margin-right: -10px;
  border: 0; background: none; cursor: pointer;
}
.nav-toggle span:not(.visually-hidden) {
  position: absolute; left: 11px;
  width: 22px; height: 1.5px;
  background: var(--ink);
  transition: transform .3s, opacity .3s;
}
.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 27px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 40px) 0 96px;
  background: var(--bg);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr minmax(0, 560px);
  align-items: center;
  gap: 48px;
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.hero-title { font-weight: 400; line-height: 1; }
/* h1 の中に日本語のキーワードを入れている。見た目は以前の小さなラベルのまま */
.hero-title-ja {
  display: block;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: .2em;
  color: var(--muted);
  margin-bottom: 20px;
}
.hero-title-en {
  display: block;
  font-family: var(--font-en);
  font-weight: 300;
  font-size: clamp(56px, 9vw, 128px);
  letter-spacing: -.01em;
  line-height: .95;
}
.hero-title-sub {
  display: block;
  margin-top: 16px;
  font-family: var(--font-en);
  font-weight: 300;
  font-size: clamp(22px, 3vw, 40px);
  letter-spacing: .01em;
}
.hero-lead {
  margin: 40px 0 44px;
  font-size: clamp(16px, 1.6vw, 20px);
  line-height: 2;
  color: var(--ink);
}
.hero-links { display: flex; gap: 0; }
.hero-links li + li { border-left: 1px solid var(--line); }
.hero-links a {
  display: block;
  padding: 4px 28px;
  font-family: var(--font-en);
  font-size: 15px;
  text-decoration: none;
  color: var(--ink);
  transition: opacity .2s;
}
.hero-links li:first-child a { padding-left: 0; }
.hero-links a:hover { opacity: .6; }
.hero-links small {
  display: block;
  font-family: var(--font-ja);
  font-size: 12px;
  color: var(--muted);
}
.hero-visual img {
  width: 100%;
  animation: hero-in 1.4s var(--ease) both .2s;
}
.hero-text > * { animation: hero-up 1s var(--ease) both; }
.hero-text > :nth-child(2) { animation-delay: .1s; }
.hero-text > :nth-child(3) { animation-delay: .25s; }
.hero-text > :nth-child(4) { animation-delay: .4s; }

@keyframes hero-in { from { opacity: 0; transform: scale(1.04); } to { opacity: 1; transform: none; } }
@keyframes hero-up { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }

.hero-scroll {
  position: absolute;
  left: 50%; bottom: 24px;
  transform: translateX(-50%);
  padding-bottom: 56px;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--muted);
}
.hero-scroll::after {
  content: "";
  position: absolute; left: 50%; bottom: 0;
  width: 1px; height: 48px;
  background: var(--muted);
  transform-origin: top;
  animation: scroll-line 2s var(--ease) infinite;
}
@keyframes scroll-line {
  0% { transform: scaleY(0); }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- Notice ---------- */

.notice { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.notice-inner {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  padding-top: 28px;
  padding-bottom: 28px;
  font-size: 14px;
}
.notice-date { font-family: var(--font-en); color: var(--muted); margin: 0; }
.notice-text { margin: 0; }
.notice-text strong { display: block; color: var(--ink); font-weight: 600; margin-bottom: 4px; }

/* ---------- Section common ---------- */

.section { padding: 140px 0; }
.section-label {
  font-family: var(--font-en);
  font-size: 14px;
  letter-spacing: .08em;
  color: var(--muted);
  margin-bottom: 20px;
}
.section-title {
  font-size: clamp(26px, 3.2vw, 40px);
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: .06em;
  margin-bottom: 56px;
}
.sub-title {
  font-size: 20px;
  font-weight: 600;
  margin: 72px 0 24px;
}
.sub-title small { font-size: 13px; font-weight: 400; color: var(--muted); margin-left: .5em; }

.note { font-size: 13px; color: var(--muted); margin-top: 32px; }
.note-list { margin-top: 20px; font-size: 13px; color: var(--muted); }
.note-list li { padding-left: 1.2em; text-indent: -1.2em; }
.note-list li::before { content: "※ "; }

/* 2カラム（テキスト＋画像） */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 80px;
}
.split-text .section-title { margin-bottom: 40px; }
.split-text p:not(.section-label) { max-width: 30em; }

/* スクロール出現 */
.js .reveal { opacity: 0; transform: translateY(32px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.js .reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Concept ---------- */

.concept { padding-top: 160px; }

/* ---------- Points ---------- */

.points { background: var(--bg-alt); }
.point-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.point-list li:nth-child(2) { transition-delay: .1s; }
.point-list li:nth-child(3) { transition-delay: .2s; }
.point-list li:nth-child(4) { transition-delay: .3s; }
.point-list figure {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: #fff;
  margin-bottom: 24px;
}
.point-list figure img { width: 100%; height: 100%; object-fit: cover; }
.point-num {
  font-family: var(--font-en);
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 4px;
}
.point-list h3 { font-size: 17px; margin-bottom: 12px; }
.point-list p:last-child { font-size: 14px; line-height: 1.85; }

/* ---------- Line Up ---------- */

.lineup .section-title { margin-bottom: 40px; }
.product { padding: 64px 0; }
.product + .product { border-top: 1px solid var(--line); }
.product-inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 80px;
  align-items: center;
}
.product-reverse .product-visual { order: 2; }

.color-stage {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 560px;
  margin: 0 auto;
}
.color-stage img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: contain;
  opacity: 0;
  transition: opacity .5s var(--ease);
}
.color-stage img.is-active { opacity: 1; }

.color-switch {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
}
.color-switch button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid var(--line);
  background: #fff;
  font: 13px/1 var(--font-en);
  letter-spacing: .06em;
  color: var(--muted);
  cursor: pointer;
  transition: border-color .2s, color .2s;
}
.color-switch button:hover { color: var(--ink); }
.color-switch button.is-active { border-color: var(--ink); color: var(--ink); }
.swatch {
  width: 14px; height: 14px;
  border-radius: 50%;
  border: 1px solid #bbb;
}
.swatch-black { background: #1b1b1b; border-color: #1b1b1b; }
.swatch-white { background: #fff; }
.swatch-clear { background: linear-gradient(135deg, #eef3f6 0 45%, #cfd9df 45% 55%, #eef3f6 55%); }

.product-sub-photos {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 16px;
  margin-top: 16px;
}
.product-sub-photos img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4 / 3; }
.product-sub-photos img:first-child { object-position: center 30%; }

.product-type {
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--muted);
  margin-bottom: 8px;
}
.product-name {
  font-family: var(--font-en);
  font-weight: 300;
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1.1;
  letter-spacing: 0;
}
.product-name-ja { font-size: 13px; color: var(--muted); margin: 12px 0 28px; }

.product-facts {
  margin: 28px 0 32px;
  border-top: 1px solid var(--line);
}
.product-facts div {
  display: grid;
  grid-template-columns: 7em 1fr;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.product-facts dt { color: var(--muted); }
.product-facts dd { margin: 0; color: var(--ink); }

.buy-list { display: flex; flex-wrap: wrap; gap: 8px; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px 32px;
  font-size: 14px;
  text-decoration: none;
  letter-spacing: .06em;
  transition: background .2s, color .2s, border-color .2s;
}
.btn-buy {
  flex-direction: column;
  gap: 2px;
  min-width: 150px;
  padding: 12px 20px;
  background: var(--ink);
  color: #fff;
  font-size: 13px;
  line-height: 1.5;
}
.btn-buy span { font-size: 11px; opacity: .75; }
.btn-buy:hover { background: #444; }
.buy-note { margin-top: 12px; font-size: 12px; color: var(--muted); line-height: 1.7; }
.buy-contact {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}
.btn-outline { border: 1px solid var(--ink); color: var(--ink); }
.btn-outline:hover { background: var(--ink); color: #fff; }
.btn-primary { background: var(--accent); color: #fff; min-width: 280px; }
.btn-primary:hover { background: var(--accent-dark); }
.notfound-action { margin-top: 32px; }
.btn::after {
  content: "";
  width: 6px; height: 6px;
  border-top: 1px solid currentColor;
  border-right: 1px solid currentColor;
  transform: rotate(45deg);
}
.btn-buy::after { display: none; }

/* ---------- Spec ---------- */

.spec { background: var(--bg-alt); }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.spec-table, .price-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: #fff;
}
.spec-table th, .spec-table td,
.price-table th, .price-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  line-height: 1.8;
}
.spec-table thead th {
  font-family: var(--font-en);
  font-weight: 500;
  font-size: 15px;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
}
.spec-table tbody th { width: 11em; font-weight: 400; color: var(--muted); white-space: nowrap; }
.spec-table td { width: 40%; color: var(--ink); }

.price-table thead th { font-weight: 400; color: var(--muted); border-bottom: 1px solid var(--ink); }
.price-table td:first-child { font-family: var(--font-en); white-space: nowrap; width: 8em; }
.price-table td:last-child { text-align: right; white-space: nowrap; font-family: var(--font-en); color: var(--ink); }
.price-table th:last-child { text-align: right; }

/* ---------- Install ---------- */

.install-wide { margin-bottom: 64px; }
.install-wide figcaption,
.install-pair figcaption { font-size: 13px; color: var(--muted); margin-top: 12px; }
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 72px;
  counter-reset: step;
}
.steps li { border-top: 1px solid var(--ink); padding-top: 24px; }
.steps li:nth-child(2) { transition-delay: .1s; }
.steps li:nth-child(3) { transition-delay: .2s; }
.step-num {
  display: block;
  font-family: var(--font-en);
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 8px;
}
.steps h3 { font-size: 18px; margin-bottom: 10px; }
.steps p { font-size: 14px; }
.install-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.install-pair img { aspect-ratio: 4 / 3; object-fit: cover; width: 100%; }

/* ---------- Movie ---------- */

.movie { background: var(--dark); color: #cfcfcf; }
.movie .section-label { color: #9a9a9a; }
.movie .section-title, .movie h3 { color: #fff; }
.movie-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.movie-grid > div:nth-child(2) { transition-delay: .1s; }
.movie-frame { position: relative; aspect-ratio: 16 / 9; background: #000; margin-bottom: 20px; }
.movie-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.movie h3 { font-family: var(--font-en); font-weight: 400; font-size: 20px; margin-bottom: 8px; }
.movie p { font-size: 14px; }

/* ---------- Caution ---------- */

.faq { border-top: 2px solid var(--ink); max-width: 860px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  position: relative;
  padding: 20px 44px 20px 40px;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before {
  content: "Q";
  position: absolute;
  left: 6px;
  top: 18px;
  font-family: var(--font-en);
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
}
.faq summary::after {
  content: "";
  position: absolute;
  right: 14px;
  top: 27px;
  width: 11px;
  height: 11px;
  border-right: 1px solid var(--muted);
  border-bottom: 1px solid var(--muted);
  transform: rotate(45deg);
  transition: transform .2s;
}
.faq details[open] summary::after { transform: rotate(-135deg); top: 30px; }
.faq details > *:not(summary) { margin: 0 16px 16px 40px; font-size: 15px; }
.faq details > *:last-child { margin-bottom: 26px; }
.faq details p { line-height: 1.9; }
.faq details .note { font-size: 13px; color: var(--muted); }
.faq details strong { color: var(--ink); font-weight: 600; }
.faq-more { margin-top: 36px; font-size: 14px; color: var(--muted); }

/* ---------- Buy ---------- */

.buy-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.buy-grid .buy-card:nth-child(2) { transition-delay: .1s; }
.buy-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 48px;
  background: var(--bg-alt);
}
.buy-card-label {
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--muted);
  margin-bottom: 8px;
}
.buy-card h3 { font-size: 22px; margin-bottom: 16px; }
.buy-card p { font-size: 14px; margin-bottom: 32px; flex: 1; }

/* ---------- Sub page ---------- */

.page-header {
  padding: calc(var(--header-h) + 96px) 0 64px;
  border-bottom: 1px solid var(--line);
}
.page-title {
  font-size: clamp(26px, 3.2vw, 40px);
  font-weight: 500;
  letter-spacing: .06em;
}
.legal { padding: 80px 0 140px; }
.legal-list { margin: 0; max-width: 960px; }
.legal-list > div {
  display: grid;
  grid-template-columns: 14em 1fr;
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}
.legal-list dt { color: var(--muted); font-size: 14px; }
.legal-list dd { margin: 0; color: var(--ink); }
.legal-list dd p { margin-bottom: 1em; }
.legal-list dd p:last-child { margin-bottom: 0; }
.legal-list a { text-decoration: underline; text-underline-offset: 3px; }
.legal-list a:hover { text-decoration: none; }
.legal-note { font-size: 13px; color: var(--muted); }
.legal-bullets { margin-top: .5em; }
.legal-bullets li { position: relative; padding-left: 1.2em; }
.legal-bullets li::before { content: "・"; position: absolute; left: 0; }

/* ---------- Contact form ---------- */

.contact-page { padding: 80px 0 140px; }
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 80px;
  align-items: start;
}
.contact-aside { font-size: 14px; }
.contact-info { margin: 28px 0 40px; border-top: 1px solid var(--line); }
.contact-info li { padding: 14px 0; border-bottom: 1px solid var(--line); color: var(--ink); }
.contact-info span { display: block; font-size: 12px; color: var(--muted); }
.contact-guide { padding: 24px; background: var(--bg-alt); margin-bottom: 16px; }
.contact-guide-title { font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.contact-guide p:not(.contact-guide-title) { font-size: 13px; margin-bottom: 10px; }
.contact-guide a { font-size: 13px; text-underline-offset: 3px; }
.contact-note { font-size: 13px; color: var(--muted); line-height: 1.8; }

.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px 24px; }
.field-full { grid-column: 1 / -1; }
.field[hidden] { display: none; }
.field label { display: block; font-size: 14px; color: var(--ink); margin-bottom: 8px; }
.req {
  display: inline-block;
  margin-left: 8px;
  padding: 0 6px;
  font-size: 11px;
  line-height: 1.7;
  color: #fff;
  background: var(--accent);
  vertical-align: 1px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid #cfcfcc;
  border-radius: 0;
  background: #fff;
  font: inherit;
  font-size: 16px;
  color: var(--ink);
  transition: border-color .2s, box-shadow .2s;
}
.field select {
  appearance: none;
  -webkit-appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 22px) 50%, calc(100% - 16px) 50%;
  background-size: 6px 6px;
  background-repeat: no-repeat;
  padding-right: 44px;
}
.field textarea { resize: vertical; min-height: 180px; line-height: 1.8; }
.field input:focus,
.field select:focus,
.field textarea:focus { outline: none; border-color: var(--ink); box-shadow: 0 0 0 1px var(--ink); }
.field [aria-invalid="true"] { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.field-hint { font-size: 12px; color: var(--muted); margin: 8px 0 0; line-height: 1.7; }

.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.form-foot { margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--line); }
.form-note { font-size: 13px; color: var(--muted); margin-bottom: 28px; }
.form-note a { color: inherit; text-underline-offset: 3px; }
.form-foot .btn { border: 0; cursor: pointer; font-family: inherit; }
.form-foot .btn:disabled { opacity: .6; cursor: wait; }

.form-msg { margin-top: 20px; font-size: 14px; }
.form-msg:empty { display: none; }
.form-msg.is-error { color: var(--accent); font-weight: 600; }
.form-msg.is-ok {
  margin-top: 0;
  padding: 40px 32px;
  background: var(--bg-alt);
  color: var(--ink);
  font-size: 16px;
  text-align: center;
}
.cform.is-sent > :not(.form-msg) { display: none; }

/* ---------- Footer ---------- */
/* 構成は infopak.jp と同じ（ブランド＋運営会社 ／ リンク ／ 商標・著作権の3段）。
   配色はこのサイトのモノトーンのまま。ロゴ画像が黒地のため、背景は白にしている */

.site-footer { border-top: 1px solid var(--line); padding: 64px 0 40px; font-size: 13px; }
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 48px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.footer-brand img { display: block; width: 120px; height: auto; margin-bottom: 14px; }
.footer-brand p { color: var(--muted); }
.footer-company { line-height: 1.9; color: var(--muted); }
.footer-company p { margin: 0; }
.footer-label {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 2px;
}
.footer-name { font-size: 15px; font-weight: 600; }
.footer-name a { color: var(--ink); text-decoration: none; }
.footer-name a:hover { text-decoration: underline; }
.site-footer .note { margin-top: 12px; max-width: 30em; }
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  margin-bottom: 24px;
}
.footer-links a { color: var(--text); text-decoration: none; }
.footer-links a:hover { text-decoration: underline; }
.footer-legal {
  border-top: 1px solid var(--line);
  padding-top: 24px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.8;
}
.footer-legal p { margin: 0; }
.footer-legal a { color: inherit; white-space: nowrap; margin-left: 1em; }
.copyright { font-family: var(--font-en); margin-top: 8px; }

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 1024px) {
  .global-nav ul { gap: 22px; }
  .point-list { grid-template-columns: repeat(2, 1fr); gap: 48px 32px; }
  .split, .product-inner { gap: 48px; }
}

@media (max-width: 860px) {
  :root { --header-h: 60px; --gutter: 20px; }

  .logo-sub { display: none; }
  .logo-mark { width: 104px; }
  .nav-toggle { display: block; }
  .global-nav {
    position: fixed;
    inset: var(--header-h) 0 auto;
    background: #fff;
    border-top: 1px solid var(--line);
    box-shadow: 0 12px 24px rgba(0, 0, 0, .06);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity .25s, transform .25s, visibility .25s;
  }
  .global-nav.is-open { visibility: visible; opacity: 1; transform: none; }
  .global-nav ul { flex-direction: column; align-items: stretch; gap: 0; padding: 8px var(--gutter) 24px; }
  .global-nav li { border-bottom: 1px solid var(--line); }
  .global-nav li:last-child { border-bottom: 0; padding-top: 16px; }
  .global-nav a { display: block; padding: 16px 0; font-size: 15px; }
  .global-nav a:not(.nav-cta)::after { display: none; }
  .global-nav .nav-cta { display: block; text-align: center; padding: 14px; }
  .site-header.menu-open { background: #fff; }

  .hero { min-height: auto; padding: calc(var(--header-h) + 32px) 0 96px; }
  .hero-inner { grid-template-columns: 1fr; gap: 24px; }
  .hero-visual { order: -1; max-width: 360px; margin: 0 auto; }
  .hero-lead { margin: 28px 0 32px; }
  .hero-scroll { display: none; }

  .notice-inner { grid-template-columns: 1fr; gap: 4px; }

  .section { padding: 96px 0; }
  .concept { padding-top: 96px; }
  .section-title { margin-bottom: 40px; }
  .split, .product-inner { grid-template-columns: 1fr; gap: 40px; }
  .product-reverse .product-visual { order: 0; }
  .steps { grid-template-columns: 1fr; gap: 32px; margin-bottom: 56px; }
  .install-wide { margin-bottom: 48px; }
  .movie-grid, .buy-grid, .install-pair { grid-template-columns: 1fr; gap: 40px; }
  .buy-card { padding: 36px 28px; }

  .page-header { padding: calc(var(--header-h) + 56px) 0 40px; }
  .legal { padding: 40px 0 96px; }
  .legal-list > div { grid-template-columns: 1fr; gap: 6px; padding: 22px 0; }
  .contact-page { padding: 40px 0 96px; }
  .contact-layout { grid-template-columns: 1fr; gap: 48px; }
  .contact-aside { order: 2; }
  .field-grid { grid-template-columns: 1fr; gap: 24px; }
  .form-foot .btn { width: 100%; min-width: 0; }

  .footer-inner { gap: 32px; }
}

@media (max-width: 520px) {
  .point-list { grid-template-columns: 1fr; gap: 48px; }
  .hero-links a { padding: 4px 18px; }
  .buy-list li { flex: 1 1 100%; }
  .btn-buy { width: 100%; }
  .btn-primary { min-width: 0; width: 100%; }
  .spec-table th, .spec-table td,
  .price-table th, .price-table td { padding: 14px 12px; }
  .spec-table tbody th { width: auto; }
  .spec-table { min-width: 560px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}