/* ==========================================
   Umewaka Noh Inc. — style.css  v2
   ミニマル和モダン
   ========================================== */

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg:       #FFFFFF;
  --color-surface:  #FFFFFF;
  --color-text:     #1A1816;
  --color-text-sub: #4A4846;
  --color-ink:      #2E2B28;
  --color-rule:     #D8D5CF;
  --color-rule-dark:#A8A49E;

  --font-body:     '游ゴシック', 'Yu Gothic', 'YuGothic', 'ヒラギノ角ゴ ProN', sans-serif;
  --font-display:  '游ゴシック', 'Yu Gothic', 'YuGothic', 'ヒラギノ角ゴ ProN', sans-serif;
  --font-serif-jp: '游ゴシック', 'Yu Gothic', 'YuGothic', 'ヒラギノ角ゴ ProN', sans-serif;

  --max-width: 1080px;
  --transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-weight: 500;
  line-height: 2.0;
  letter-spacing: 0.05em;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }

/* ==========================================
   Header
   ========================================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.6rem 2.5rem;
  transition: background-color var(--transition), border-bottom-color var(--transition);
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--color-rule);
}

.header-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  width: 100%;
}

/* Logo */
.logo {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.75rem;
  line-height: 1;
}

.logo-img {
  height: 32px;
  width: auto;
  display: block;
  transition: filter var(--transition);
}

/* ヒーロー上（写真背景）: ロゴ切替はJS側で管理 */

/* Nav — デスクトップ: header-inner の flex 子として右端に表示 */
@media (min-width: 701px) {
  .global-nav {
    display: flex;
    align-items: flex-start;
  }
}

.global-nav ul {
  display: flex;
  flex-wrap: nowrap;
  gap: 3rem;
}

.global-nav a {
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--color-text);
  opacity: 0.7;
  transition: opacity var(--transition), color var(--transition);
}

.global-nav a:hover { opacity: 1; }

/* 中間幅: フォント・gapを縮小して1行に収める */
@media (min-width: 701px) and (max-width: 1000px) {
  .global-nav ul { gap: 1.2rem; }
  .global-nav a  { font-size: 0.6rem; letter-spacing: 0.1em; }
}
@media (min-width: 1001px) and (max-width: 1200px) {
  .global-nav ul { gap: 2rem; }
  .global-nav a  { font-size: 0.67rem; letter-spacing: 0.18em; }
}

/* ヒーロー（写真背景）上ではナビを白文字に */
@media (min-width: 701px) {
  .site-header:not(.scrolled) .global-nav a {
    color: #ffffff;
    opacity: 0.85;
  }
  .site-header:not(.scrolled) .global-nav a:hover {
    opacity: 1;
  }
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  width: 28px;
}

.nav-toggle span {
  display: block;
  height: 1px;
  background: var(--color-text);
  transition: var(--transition);
}

/* ヒーロー上（写真背景）: ハンバーガーを白に */
.site-header:not(.scrolled) .nav-toggle span {
  background: #ffffff;
}

.nav-toggle span:last-child { width: 70%; }

.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); width: 100%; }

/* ==========================================
   Arrow Link  （View Detail ————→ スタイル）
   ========================================== */
.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 1.2rem;
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-text);
  opacity: 0.75;
  transition: opacity var(--transition), gap var(--transition);
}

.arrow-link::after {
  content: '';
  display: block;
  width: 60px;
  height: 1px;
  background: var(--color-text);
  transition: width var(--transition);
  flex-shrink: 0;
  position: relative;
}

/* 矢印先端 */
.arrow-link .arrow-head {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-top: 1px solid var(--color-text);
  border-right: 1px solid var(--color-text);
  transform: rotate(45deg) translateY(1px);
  margin-left: -1rem;
}

.arrow-link:hover { opacity: 1; }
.arrow-link:hover::after { width: 90px; }

/* ==========================================
   Hero
   ========================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  background: #FFFFFF;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url(../images/hero-bg.jpg) center/cover no-repeat;
}

/* 暗めのオーバーレイ — テキスト可読性を確保 */
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.32);
}

/* 大きな「能」文字 — 非表示（写真背景時は不要） */
.hero-bg::after {
  content: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 0 2.5rem 10vh;
}

.hero-eyebrow {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.45em;
  text-transform: uppercase;
  color: var(--color-text-sub);
  margin-bottom: 1.4rem;
  opacity: 0;
  animation: fadeInUp 1.2s ease forwards 0.4s;
}

.hero-title {
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeInUp 1.2s ease forwards 0.7s;
}

.hero-title-jp {
  display: block;
  font-family: var(--font-serif-jp);
  font-size: clamp(3.5rem, 9vw, 7rem);
  font-weight: 200;
  color: #FFFFFF;
  letter-spacing: 0.2em;
  line-height: 1.15;
}

.hero-title-en {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3.5vw, 2.6rem);
  font-weight: 300;
  color: #ffffff;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.hero-cta {
  opacity: 0;
  animation: fadeInUp 1.2s ease forwards 1.1s;
}

.hero-cta .arrow-link {
  color: rgba(255,255,255,0.9);
}
.hero-cta .arrow-link::after {
  background: rgba(255,255,255,0.9);
}
.hero-cta .arrow-link .arrow-head {
  border-color: rgba(255,255,255,0.9);
}

/* Scroll */
.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  right: 2.5rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  z-index: 2;
  opacity: 0;
  animation: fadeIn 1s ease forwards 2s;
}

.scroll-text {
  font-family: var(--font-display);
  font-size: 0.58rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  writing-mode: vertical-rl;
}

.scroll-line {
  width: 1px;
  height: 50px;
  background: rgba(255,255,255,0.4);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255,255,255,0.9);
  animation: scrollLine 2.4s ease infinite;
}

/* ==========================================
   Section Common
   ========================================== */
.section {
  padding: 9rem 0 11rem;
  scroll-margin-top: 72px;
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2.5rem;
}

/* セクション見出し：—— TITLE —— 形式 */
.section-heading {
  text-align: center;
  margin-bottom: 5rem;
}

.section-heading-rule {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  margin-bottom: 1.2rem;
}

.section-heading-rule::before,
.section-heading-rule::after {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background: var(--color-rule-dark);
}

.section-heading-en {
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.45em;
  text-transform: uppercase;
  color: var(--color-text-sub);
}

.section-title {
  font-family: var(--font-serif-jp);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 1.5rem;
}

.section-desc {
  font-size: 1rem;
  color: var(--color-text-sub);
  letter-spacing: 0.08em;
  line-height: 2.0;
}

/* ==========================================
   About
   ========================================== */
.about { background: var(--color-bg); }

.about-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: start;
  margin-bottom: 5rem;
}

.about-text p {
  font-size: 1rem;
  color: var(--color-text);
  line-height: 2.1;
  letter-spacing: 0.06em;
  margin-bottom: 1.8rem;
}

.about-link {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.about-image {
  position: relative;
}

.about-img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: center top;
  display: block;
}

/* Values */
.about-values {
  border-top: 1px solid var(--color-rule);
  padding-top: 5rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.value-item {
  padding: 0 3rem 0 0;
  border-right: 1px solid var(--color-rule);
}

.value-item:first-child { padding-left: 0; }
.value-item:last-child  { border-right: none; padding-right: 0; padding-left: 3rem; }
.value-item:nth-child(2) { padding-left: 3rem; }

.value-number {
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  color: var(--color-text-sub);
  margin-bottom: 1.5rem;
  display: block;
}

.value-item h3 {
  font-family: var(--font-serif-jp);
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  margin-bottom: 1.2rem;
}

.value-item p {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 2.1;
  letter-spacing: 0.05em;
}

/* ==========================================
   Performances
   ========================================== */
.performances {
  background: var(--color-surface);
}

.performance-list {
  border-top: 1px solid var(--color-rule);
  margin-bottom: 4rem;
}

.performance-item {
  display: grid;
  grid-template-columns: 80px 90px 1fr auto;
  gap: 0 2rem;
  align-items: center;
  padding: 2rem 0;
  border-bottom: 1px solid var(--color-rule);
  transition: background-color var(--transition);
  cursor: default;
}

.perf-thumb {
  width: 80px;
  height: 60px;
  overflow: hidden;
  background: var(--color-rule);
  flex-shrink: 0;
}

.perf-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition);
}

.performance-item:hover .perf-thumb img {
  transform: scale(1.05);
}

.performance-item:hover { background: rgba(0,0,0,0.015); }
.performance-item.featured { border-top: 1px solid var(--color-ink); margin-top: -1px; }

.perf-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 0;
  gap: 0;
}

.perf-footer-right {
  align-self: flex-end;
  margin-bottom: 2.5rem;
}

.perf-footer-center {
  font-family: var(--font-serif-jp);
  font-size: 1.05rem;
  letter-spacing: 0.05em;
}

.perf-date {
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--color-text-sub);
  white-space: nowrap;
}

.perf-body { display: flex; flex-direction: column; gap: 0.3rem; }

.perf-tag {
  font-family: var(--font-display);
  font-size: 0.58rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-text-sub);
}

.perf-title {
  font-family: var(--font-serif-jp);
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.06em;
}

.perf-venue {
  font-size: 0.78rem;
  color: var(--color-text-sub);
  letter-spacing: 0.05em;
}

.perf-link { align-self: center; }

/* ==========================================
   Report
   ========================================== */
.report {
  background: var(--color-surface);
}

.report-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3.5rem;
  margin-bottom: 4rem;
}

/* ==========================================
   Blog
   ========================================== */
.blog { background: var(--color-bg); }

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 4rem;
}

.blog-card {
  cursor: pointer;
}

.blog-card-image {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  margin-bottom: 1.4rem;
  background: var(--color-rule);
}

.blog-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition);
}

.blog-card:hover .blog-card-image img {
  transform: scale(1.04);
}

.blog-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif-jp);
  font-size: 2.5rem;
  font-weight: 200;
  color: var(--color-rule);
  transition: transform var(--transition);
}

.blog-card:hover .blog-image-placeholder {
  transform: scale(1.03);
}

.blog-date {
  display: block;
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--color-text-sub);
  margin-bottom: 0.6rem;
}

.blog-title {
  font-family: var(--font-serif-jp);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.8;
  margin-bottom: 0.8rem;
  color: var(--color-text);
}

.blog-excerpt {
  font-size: 0.92rem;
  color: var(--color-text);
  line-height: 2.0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 1rem;
}

.blog-note {
  text-align: center;
  border-top: 1px solid var(--color-rule);
  padding-top: 3rem;
}

/* ------------------------------------------
   Works・実績
------------------------------------------ */
.works-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3.5rem;
  margin-bottom: 4rem;
}

.works-card {
  cursor: pointer;
}

.works-card-image {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  margin-bottom: 1.4rem;
  background: var(--color-surface);
}

.works-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif-jp);
  font-size: 3rem;
  font-weight: 200;
  color: var(--color-rule);
  transition: transform var(--transition);
}

.works-card:hover .works-image-placeholder {
  transform: scale(1.03);
}

.works-date {
  display: block;
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--color-text-sub);
  margin-bottom: 0.6rem;
}

.works-title {
  font-family: var(--font-serif-jp);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.8;
  margin-bottom: 0.8rem;
  color: var(--color-text);
}

.works-excerpt {
  font-size: 0.92rem;
  color: var(--color-text);
  line-height: 2.0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 1rem;
}

.blog-setup-msg {
  font-size: 0.78rem;
  color: var(--color-text-sub);
  font-style: italic;
  letter-spacing: 0.05em;
}

/* ==========================================
   Contact
   ========================================== */
.contact {
  background: var(--color-surface);
  border-top: 1px solid var(--color-rule);
}

.contact .section-inner {
  max-width: 700px;
}

.contact-info {
  max-width: 700px;
  margin-top: 5rem;
  margin-bottom: 3rem;
  border-top: 1px solid var(--color-rule);
  padding-top: 3rem;
}

.company-info {
  display: grid;
  gap: 0;
}

.info-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--color-rule);
  font-size: 0.85rem;
}

.info-row dt {
  font-family: var(--font-display);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--color-text-sub);
  padding-top: 0.05rem;
}

.info-row dd {
  color: var(--color-text);
  line-height: 1.6;
}

.info-row dd a {
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-rule);
  transition: border-color var(--transition);
}

.info-row dd a:hover {
  border-bottom-color: var(--color-text);
}

.map-link {
  display: inline-block;
  margin-left: 1rem;
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--color-text-sub) !important;
  border-bottom: 1px solid var(--color-rule) !important;
  transition: color var(--transition), border-color var(--transition) !important;
}

.map-link:hover {
  color: var(--color-text) !important;
  border-bottom-color: var(--color-text) !important;
}

.contact-form {
  border-top: 1px solid var(--color-rule);
  padding-top: 3rem;
}

.form-group {
  margin-bottom: 2rem;
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 0 2rem;
  align-items: start;
}

.form-group label {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--color-text-sub);
  padding-top: 0.9rem;
}

.required { color: var(--color-ink); margin-left: 0.2rem; }

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.8rem 0;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-rule);
  color: var(--color-text);
  font-family: var(--font-serif-jp);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  outline: none;
  transition: border-color var(--transition);
  -webkit-appearance: none;
  appearance: none;
  border-radius: 0;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%237A7570' stroke-width='1' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
  padding-right: 1.5rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-bottom-color: var(--color-ink);
}

.form-group textarea { resize: vertical; }

.form-error {
  grid-column: 2;
  font-size: 0.72rem;
  color: #b33;
  margin-top: 0.3rem;
  letter-spacing: 0.05em;
  min-height: 1em;
}

.form-submit-row {
  grid-template-columns: 160px 1fr;
  display: grid;
  gap: 0 2rem;
  padding-top: 1rem;
}

.btn-submit {
  grid-column: 2;
  display: inline-flex;
  align-items: center;
  gap: 1.2rem;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-text);
  opacity: 0.75;
  transition: opacity var(--transition);
  padding: 0;
}

.btn-submit::after {
  content: '';
  display: block;
  width: 60px;
  height: 1px;
  background: var(--color-text);
  transition: width var(--transition);
}

.btn-submit:hover { opacity: 1; }
.btn-submit:hover::after { width: 90px; }
.btn-submit:disabled { opacity: 0.35; cursor: not-allowed; }

.form-status {
  grid-column: 2;
  margin-top: 1.2rem;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  display: none;
}

.form-status.success { display: block; color: var(--color-ink); }
.form-status.error   { display: block; color: #b33; }

/* ==========================================
   Footer
   ========================================== */
.site-footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.45);
  padding: 6rem 2.5rem 3rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: start;
  gap: 4rem;
}

.footer-tagline {
  font-family: var(--font-serif-jp);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.35);
  writing-mode: vertical-rl;
  justify-self: start;
}

.footer-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.5rem;
}

.footer-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
}

.logo-img--footer {
  height: 44px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.75;
}

.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem 2.5rem;
}

.footer-nav a {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  transition: color var(--transition);
}

.footer-nav a:hover { color: rgba(255,255,255,0.8); }

.footer-copy {
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  color: rgba(255,255,255,0.25);
}

.footer-social {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-end;
  justify-self: end;
}

.social-link {
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  transition: color var(--transition);
}

.social-link:hover { color: rgba(255,255,255,0.7); }

/* ==========================================
   Animations
   ========================================== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes scrollLine {
  0%   { top: -100%; }
  100% { top: 100%; }
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================
   Responsive
   ========================================== */
@media (max-width: 900px) {
  .about-body   { grid-template-columns: 1fr; gap: 3rem; margin-bottom: 4rem; }
  .about-values { grid-template-columns: 1fr; gap: 2.5rem; }

  .value-item {
    border-right: none;
    border-bottom: 1px solid var(--color-rule);
    padding: 0 0 2.5rem 0 !important;
  }

  .value-item:last-child { border-bottom: none; }

  .report-grid { grid-template-columns: 1fr 1fr; }
  .blog-grid { grid-template-columns: 1fr 1fr; }
  .works-grid { grid-template-columns: 1fr; }

  .footer-inner {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    gap: 3rem;
  }

  .footer-tagline { writing-mode: horizontal-tb; }
  .footer-social  { flex-direction: row; justify-self: auto; }

  .performance-item {
    grid-template-columns: 80px 1fr;
    gap: 0 1.5rem;
  }

  .perf-link { grid-column: 2; margin-top: 1rem; }
}

@media (max-width: 700px) {
  .section { padding: 5rem 0; }
  .section-heading { margin-bottom: 3rem; }
  .report .section-title {
    white-space: nowrap;
    font-size: clamp(1.1rem, 4.8vw, 2rem);
  }
  .site-header { padding: 1.2rem 1.4rem; }

  .nav-toggle { display: flex; }

  /* ナビ背後のオーバーレイ */
  body.nav-open::before {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.45);
    z-index: 89;
  }

  .global-nav {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    min-height: 100svh; /* iOS Safari 等でも確実に全高カバー */
    width: 72vw;
    max-width: 280px;
    background: #ffffff;
    padding: 5rem 2rem 2rem;
    transform: translateX(100%);
    transition: transform var(--transition);
    box-shadow: -8px 0 40px rgba(0,0,0,0.15);
    z-index: 90;
    border-left: 1px solid var(--color-rule);
    overflow-y: auto;
  }

  .global-nav.open { transform: translateX(0); }

  /* モバイルnavオープン時: backdrop-filterのstacking context影響を除去 */
  body.nav-open .site-header {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .global-nav ul {
    flex-direction: column;
    gap: 2rem;
  }

  .global-nav a {
    font-size: 0.9rem;
    opacity: 1;
  }

  .form-group {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .form-group label { padding-top: 0; }
  .form-error { grid-column: 1; }
  .form-submit-row { grid-template-columns: 1fr; }
  .btn-submit { grid-column: 1; }
  .form-status { grid-column: 1; }

  .report-grid { grid-template-columns: 1fr; }
  .blog-grid  { grid-template-columns: 1fr; }
  .works-grid { grid-template-columns: 1fr; }

  .performance-item {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .perf-date { font-size: 0.65rem; }
  .perf-link { margin-top: 0.8rem; }

  .section-inner { padding: 0 1.4rem; }
  .hero-content  { padding: 0 1.4rem 8vh; }
  .scroll-indicator { right: 1.4rem; }
}