/*
Theme Name: ETD Corporate
Theme URI: https://etd-management.example/
Author: ETD Management Co., Ltd.
Description: ETD Management株式会社 コーポレートサイト用クラシックテーマ。静的モックアップ (index.html / group.html) のデザインを忠実に移植し、News・お問い合わせ・汎用固定ページを同一のデザイン言語で拡張。全文言はカスタマイザー、リスト系(グループ会社・投資先・物件)はカスタム投稿タイプで管理。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.8
Requires PHP: 7.4
License: Proprietary
Text Domain: etd-corporate
*/

:root {
  --ink: #1a1a1a;
  --paper: #f5f2ed;
  --warm: #c4a882;
  --slate: #6b7280;
  --deep: #2c3e50;
  --rule: #d4cec4;
  --accent: #8b6914;
  color-scheme: only light;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background: #f5f2ed;
  color-scheme: only light;
}

body {
  background: #f5f2ed;
  background: var(--paper);
  color: #1a1a1a;
  color: var(--ink);
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 400;
  line-height: 1.8;
  overflow-x: hidden;
  color-scheme: only light;
}

img { max-width: 100%; height: auto; }

/* ── Force light mode even when OS/browser prefers dark ── */
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: only light;
  }
  html, body {
    background: #f5f2ed !important;
    color: #1a1a1a !important;
  }
  .nav .nav-logo,
  .hero-mark,
  .vision-text,
  .mission-line,
  .value-content h3,
  .page-title,
  .portfolio-name,
  .stock-table tbody td:first-child,
  .news-title,
  .article-title,
  .entry-content h2,
  .entry-content h3,
  .form-label,
  .wpcf7 label {
    color: #2c3e50 !important;
  }
  .company-name,
  .nav .nav-links a,
  .hero-tagline,
  .vision-note,
  .mission-desc,
  .value-content p,
  .page-lead,
  .section-intro,
  .portfolio-desc,
  .portfolio-desc p,
  .portfolio-badge,
  .stock-table tbody td,
  .entry-content,
  .footer-name {
    color: #6b7280 !important;
  }
  .nav .nav-links a.current,
  .nav .nav-links .current-menu-item > a,
  .nav .nav-links .current_page_item > a {
    color: #2c3e50 !important;
  }
  .hero-sub,
  .section-label,
  .portfolio-meta,
  .stock-table thead th,
  .news-date,
  .article-date {
    color: #c4a882 !important;
  }
  .mission-line .em { color: #8b6914 !important; }
  .mission-edge { color: #c4a882 !important; }
  .value-num,
  .portfolio-empty p,
  .footer-copy { color: #d4cec4 !important; }
  .section-divider,
  .value-item,
  .portfolio-item,
  .portfolio-empty,
  .stock-table thead th,
  .stock-table tbody td,
  .news-item,
  .footer,
  .hero-line,
  .portfolio-badge {
    border-color: #d4cec4 !important;
  }
  .section-divider, .hero-line { background: #d4cec4 !important; }
  input, textarea, select, button {
    background: transparent !important;
    color: #1a1a1a !important;
    border-color: #d4cec4 !important;
  }
}

/* ── Nav ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  mix-blend-mode: multiply;
}

body.admin-bar .nav { top: 32px; }
@media (max-width: 782px) {
  body.admin-bar .nav { top: 46px; }
}

.nav .nav-logo {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 300;
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  color: var(--deep);
  text-decoration: none;
}

.nav .nav-links ul {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav .nav-links li { margin: 0; }

.nav .nav-links a {
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--slate);
  text-decoration: none;
  transition: color 0.3s ease;
}

.nav .nav-links a:hover { color: var(--deep); }

.nav .nav-links a.current,
.nav .nav-links .current-menu-item > a,
.nav .nav-links .current_page_item > a,
.nav .nav-links .current-menu-ancestor > a { color: var(--deep); }

/* ── Hero (front page) ── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  padding: 2rem;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(196, 168, 130, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(44, 62, 80, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero-inner {
  text-align: center;
  position: relative;
  z-index: 1;
}

.company-name {
  font-family: 'DM Mono', monospace;
  font-weight: 300;
  font-size: clamp(0.75rem, 1.2vw, 0.9rem);
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 1s 0.3s ease forwards;
}

.hero-mark {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 300;
  font-size: clamp(4rem, 12vw, 9rem);
  letter-spacing: 0.05em;
  line-height: 1;
  color: var(--deep);
  margin-bottom: 1rem;
  opacity: 0;
  animation: fadeUp 1.2s 0.5s ease forwards;
}

.hero-sub {
  font-family: 'DM Mono', monospace;
  font-weight: 300;
  font-size: clamp(0.65rem, 1vw, 0.8rem);
  letter-spacing: 0.25em;
  color: var(--warm);
  margin-bottom: 3.5rem;
  opacity: 0;
  animation: fadeUp 1s 0.8s ease forwards;
}

.hero-line {
  width: 1px;
  height: 80px;
  background: var(--rule);
  margin: 0 auto 2.5rem;
  opacity: 0;
  animation: growDown 1s 1.2s ease forwards;
}

.hero-tagline {
  font-weight: 200;
  font-size: clamp(0.85rem, 1.4vw, 1.05rem);
  color: var(--slate);
  letter-spacing: 0.15em;
  line-height: 2.2;
  opacity: 0;
  animation: fadeUp 1s 1.5s ease forwards;
}

.scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--rule);
  opacity: 0;
  animation: fadeUp 1s 2s ease forwards;
}

.scroll-hint::after {
  content: '';
  display: block;
  width: 1px;
  height: 24px;
  background: var(--rule);
  margin: 0.75rem auto 0;
  animation: pulse 2s ease-in-out infinite;
}

/* ── Page Header (sub pages) ── */
.page-header {
  padding: 10rem 2rem 5rem;
  max-width: 860px;
  margin: 0 auto;
}

.page-title {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 300;
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  letter-spacing: 0.05em;
  color: var(--deep);
  line-height: 1.2;
  opacity: 0;
  animation: fadeUp 1s 0.3s ease forwards;
}

.page-title--jp {
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 500;
  font-size: clamp(1.6rem, 4.5vw, 2.6rem);
  letter-spacing: 0.12em;
  line-height: 1.6;
}

.page-lead {
  margin-top: 2rem;
  font-size: 0.88rem;
  color: var(--slate);
  line-height: 2.2;
  letter-spacing: 0.04em;
  max-width: 580px;
  opacity: 0;
  animation: fadeUp 1s 0.6s ease forwards;
}

/* ── Sections ── */
.section {
  padding: 5rem 2rem;
  max-width: 860px;
  margin: 0 auto;
}

body.home .section { padding: 8rem 2rem; }

.section-divider {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  height: 1px;
  background: var(--rule);
}

.section-label {
  font-family: 'DM Mono', monospace;
  font-weight: 400;
  font-size: 0.7rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--warm);
  margin-bottom: 3rem;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s ease;
}

.section-label.visible {
  opacity: 1;
  transform: translateY(0);
}

.section-intro {
  font-size: 0.85rem;
  color: var(--slate);
  line-height: 2.2;
  letter-spacing: 0.04em;
  margin-bottom: 3rem;
  max-width: 640px;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s 0.15s ease;
}

.section-intro.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Vision ── */
.vision-text {
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 500;
  font-size: clamp(1.4rem, 3vw, 2rem);
  line-height: 2;
  letter-spacing: 0.08em;
  color: var(--deep);
  opacity: 0;
  transform: translateY(30px);
  transition: all 1s 0.2s ease;
}

.vision-text.visible {
  opacity: 1;
  transform: translateY(0);
}

.vision-note {
  margin-top: 2.5rem;
  font-size: 0.85rem;
  color: var(--slate);
  letter-spacing: 0.05em;
  line-height: 2;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s 0.5s ease;
}

.vision-note.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Mission ── */
.mission-statement {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  opacity: 0;
  transform: translateY(30px);
  transition: all 1s 0.2s ease;
}

.mission-statement.visible {
  opacity: 1;
  transform: translateY(0);
}

.mission-line {
  font-weight: 500;
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  letter-spacing: 0.12em;
  line-height: 2;
  color: var(--deep);
}

.mission-line .em { color: var(--accent); }

.mission-desc {
  margin-top: 3rem;
  font-size: 0.88rem;
  color: var(--slate);
  line-height: 2.2;
  letter-spacing: 0.04em;
  max-width: 640px;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s 0.6s ease;
}

.mission-desc.visible {
  opacity: 1;
  transform: translateY(0);
}

.mission-edge {
  margin-top: 2rem;
  font-size: 0.82rem;
  color: var(--warm);
  letter-spacing: 0.08em;
  line-height: 2;
  font-style: italic;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s 0.8s ease;
}

.mission-edge.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Values ── */
.values-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.value-item {
  padding: 3rem 0;
  border-bottom: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 2rem;
  align-items: start;
  opacity: 0;
  transform: translateY(25px);
  transition: all 0.8s ease;
}

.value-item:first-child { border-top: 1px solid var(--rule); }

.value-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.value-num {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 300;
  font-size: 2rem;
  color: var(--rule);
  line-height: 1;
  padding-top: 0.2rem;
}

.value-content h3 {
  font-weight: 700;
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  letter-spacing: 0.15em;
  color: var(--deep);
  margin-bottom: 1rem;
}

.value-content p {
  font-size: 0.85rem;
  color: var(--slate);
  line-height: 2;
  letter-spacing: 0.03em;
}

/* ── Portfolio (Group page) ── */
.portfolio-item {
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.5rem;
  align-items: start;
  opacity: 0;
  transform: translateY(25px);
  transition: all 0.8s ease;
}

.portfolio-item:first-of-type { border-top: 1px solid var(--rule); }

.portfolio-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.portfolio-name {
  font-weight: 500;
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
  letter-spacing: 0.08em;
  color: var(--deep);
  margin-bottom: 0.4rem;
}

.portfolio-meta {
  font-family: 'DM Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  color: var(--warm);
  margin-bottom: 0.6rem;
}

.portfolio-desc,
.portfolio-desc p {
  font-size: 0.82rem;
  color: var(--slate);
  line-height: 1.9;
  letter-spacing: 0.03em;
}

.portfolio-desc p { margin-bottom: 0.6em; }
.portfolio-desc p:last-child { margin-bottom: 0; }

.portfolio-badge {
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--slate);
  border: 1px solid var(--rule);
  padding: 0.3rem 0.8rem;
  white-space: nowrap;
}

/* ── Stock List ── */
.stock-table {
  width: 100%;
  border-collapse: collapse;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s 0.2s ease;
}

.stock-table.visible {
  opacity: 1;
  transform: translateY(0);
}

.stock-table thead th {
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--warm);
  text-align: left;
  padding: 0 0 1rem 0;
  border-bottom: 1px solid var(--rule);
  font-weight: 400;
}

.stock-table tbody td {
  font-size: 0.82rem;
  color: var(--slate);
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--rule);
  letter-spacing: 0.03em;
  vertical-align: middle;
}

.stock-table tbody td:first-child {
  font-weight: 500;
  color: var(--deep);
  letter-spacing: 0.06em;
}

.stock-table .td-sector {
  font-family: 'DM Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
}

/* ── Empty State ── */
.portfolio-empty {
  padding: 3rem 0;
  text-align: center;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s ease;
}

.portfolio-empty.visible {
  opacity: 1;
  transform: translateY(0);
}

.portfolio-empty p {
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  color: var(--rule);
}

/* ── News List ── */
.news-list {
  border-top: 1px solid var(--rule);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s 0.15s ease;
}

.news-list.visible {
  opacity: 1;
  transform: translateY(0);
}

.news-item {
  display: grid;
  grid-template-columns: 8.5rem 1fr;
  gap: 2rem;
  align-items: baseline;
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--rule);
  text-decoration: none;
}

.news-date {
  font-family: 'DM Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  color: var(--warm);
}

.news-title {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1.9;
  color: var(--deep);
  transition: color 0.3s ease;
}

.news-item:hover .news-title { color: var(--accent); }

/* ── Pagination ── */
.pagination { margin-top: 3.5rem; }

.pagination .nav-links {
  display: flex;
  justify-content: center;
  gap: 1.8rem;
  font-family: 'DM Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
}

.pagination .nav-links a,
.pagination .nav-links span {
  color: var(--slate);
  text-decoration: none;
  transition: color 0.3s ease;
}

.pagination .nav-links a:hover { color: var(--deep); }
.pagination .nav-links .current { color: var(--deep); }

/* ── Single Article ── */
.article-header {
  padding: 10rem 2rem 4rem;
  max-width: 860px;
  margin: 0 auto;
}

.article-date {
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  color: var(--warm);
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 1s 0.2s ease forwards;
}

.article-title {
  font-weight: 500;
  font-size: clamp(1.4rem, 3.5vw, 2.1rem);
  letter-spacing: 0.1em;
  line-height: 1.8;
  color: var(--deep);
  opacity: 0;
  animation: fadeUp 1s 0.4s ease forwards;
}

.article-body { padding-top: 4rem; padding-bottom: 6rem; }

.back-link {
  display: inline-block;
  margin-top: 4rem;
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--slate);
  text-decoration: none;
  transition: color 0.3s ease;
}

.back-link:hover { color: var(--deep); }

/* ── Entry Content (block editor output) ── */
.entry-content {
  font-size: 0.88rem;
  color: var(--slate);
  line-height: 2.2;
  letter-spacing: 0.04em;
  max-width: 640px;
}

.entry-content > * { margin-bottom: 1.8rem; }
.entry-content > *:last-child { margin-bottom: 0; }

.entry-content h2 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--deep);
  margin: 3.5rem 0 1.4rem;
  padding-top: 2.2rem;
  border-top: 1px solid var(--rule);
}

.entry-content h3 {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--deep);
  margin: 2.6rem 0 1.2rem;
}

.entry-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.25em;
  text-decoration-thickness: 1px;
}

.entry-content ul,
.entry-content ol { padding-left: 1.4em; }

.entry-content li { margin-bottom: 0.5em; }

.entry-content blockquote {
  border-left: 1px solid var(--warm);
  padding-left: 1.5rem;
  font-style: italic;
  color: var(--slate);
}

.entry-content hr {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 3rem 0;
}

.entry-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.entry-content th,
.entry-content td {
  text-align: left;
  padding: 0.9rem 1rem 0.9rem 0;
  border-bottom: 1px solid var(--rule);
}

.entry-content th {
  font-family: 'DM Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--warm);
  font-weight: 400;
}

.entry-content code {
  font-family: 'DM Mono', monospace;
  font-size: 0.8em;
  background: rgba(196, 168, 130, 0.12);
  padding: 0.1em 0.4em;
}

/* ── Forms (お問い合わせ / Contact Form 7 対応) ── */
.entry-content form p,
.wpcf7 form p { margin-bottom: 2.2rem; }

.form-label,
.wpcf7 form label {
  display: block;
  font-family: 'DM Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--warm);
  margin-bottom: 0.5rem;
}

.entry-content input[type="text"],
.entry-content input[type="email"],
.entry-content input[type="tel"],
.entry-content input[type="url"],
.wpcf7 input[type="text"],
.wpcf7 input[type="email"],
.wpcf7 input[type="tel"],
.wpcf7 input[type="url"] {
  width: 100%;
  border: none;
  border-bottom: 1px solid var(--rule);
  border-radius: 0;
  background: transparent;
  padding: 0.8rem 0;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  color: var(--ink);
  transition: border-color 0.3s ease;
}

.entry-content textarea,
.wpcf7 textarea {
  width: 100%;
  border: 1px solid var(--rule);
  border-radius: 0;
  background: transparent;
  padding: 1rem;
  min-height: 11rem;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  line-height: 2;
  color: var(--ink);
  transition: border-color 0.3s ease;
  resize: vertical;
}

.entry-content input:focus,
.entry-content textarea:focus,
.wpcf7 input:focus,
.wpcf7 textarea:focus {
  outline: none;
  border-color: var(--warm);
}

.entry-content input[type="submit"],
.entry-content button[type="submit"],
.wpcf7 input[type="submit"] {
  width: auto;
  display: inline-block;
  font-family: 'DM Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--deep);
  background: transparent;
  border: 1px solid var(--deep);
  border-radius: 0;
  padding: 0.95rem 3.2rem;
  cursor: pointer;
  transition: all 0.35s ease;
  -webkit-appearance: none;
  appearance: none;
}

.entry-content input[type="submit"]:hover,
.entry-content button[type="submit"]:hover,
.wpcf7 input[type="submit"]:hover {
  background: var(--deep);
  color: var(--paper);
}

.wpcf7 .wpcf7-not-valid-tip {
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-top: 0.5rem;
}

.wpcf7 .wpcf7-response-output {
  border: 1px solid var(--rule) !important;
  margin: 2.5rem 0 0 !important;
  padding: 1rem 1.2rem !important;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--slate);
}

/* ── 404 ── */
.error-404 {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 8rem 2rem 4rem;
}

.error-404 .error-code {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 300;
  font-size: clamp(3.5rem, 10vw, 7rem);
  letter-spacing: 0.05em;
  color: var(--rule);
  line-height: 1;
  margin-bottom: 2rem;
}

.error-404 .error-text {
  font-size: 0.85rem;
  color: var(--slate);
  letter-spacing: 0.05em;
  margin-bottom: 3rem;
}

/* ── Footer ── */
.footer {
  padding: 4rem 2rem;
  text-align: center;
  border-top: 1px solid var(--rule);
}

body:not(.home) .footer { margin-top: 3rem; }

.footer-name {
  font-family: 'DM Mono', monospace;
  font-weight: 300;
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--slate);
  margin-bottom: 0.5rem;
}

.footer-copy {
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--rule);
}

/* ── Animations ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes growDown {
  from { opacity: 0; height: 0; }
  to { opacity: 1; height: 80px; }
}

@keyframes pulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .company-name, .hero-mark, .hero-sub, .hero-line, .hero-tagline,
  .scroll-hint, .page-title, .page-lead, .article-date, .article-title,
  .paper-plane {
    animation: none !important;
    opacity: 1 !important;
    height: auto;
  }
  .hero-line { height: 80px; }
  [data-animate] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .paper-plane { display: none; }
}

/* ── A11y (WP標準クラス) ── */
.screen-reader-text {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  clip-path: inset(50%);
  height: 1px;
  width: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  word-wrap: normal !important;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 1px solid var(--warm);
  outline-offset: 3px;
}

/* ── Responsive ── */
@media (max-width: 640px) {
  .nav { padding: 1.25rem 1.25rem; }
  .nav .nav-links ul { gap: 1.1rem; }
  .nav .nav-links a { font-size: 0.6rem; letter-spacing: 0.18em; }
  .section { padding: 4rem 1.5rem; }
  body.home .section { padding: 5rem 1.5rem; }
  .page-header { padding: 9rem 1.5rem 4rem; }
  .article-header { padding: 9rem 1.5rem 3rem; }
  .value-item {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  .value-num { font-size: 1.2rem; }
  .portfolio-item {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  .stock-table { font-size: 0.78rem; }
  .stock-table thead th { font-size: 0.55rem; }
  .stock-table .hide-sp { display: none; }
  .news-item {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }
}

/* ── Paper Plane ── */
.paper-plane {
  position: absolute;
  width: 28px;
  height: 28px;
  opacity: 0;
  animation: fly 6s 2.5s cubic-bezier(0.4, 0, 1, 1) forwards;
  z-index: 0;
}

.paper-plane svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: var(--rule);
  stroke-width: 1;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@keyframes fly {
  0% {
    opacity: 0;
    left: -5%;
    bottom: 8%;
    transform: rotate(-2deg) scale(0.9);
  }
  5% {
    opacity: 0.45;
    left: 0%;
    bottom: 8%;
    transform: rotate(-2deg) scale(0.9);
  }
  25% {
    opacity: 0.4;
    left: 8%;
    bottom: 8.5%;
    transform: rotate(-2deg) scale(1);
  }
  45% {
    opacity: 0.4;
    left: 20%;
    bottom: 9.5%;
    transform: rotate(-3deg) scale(1);
  }
  60% {
    opacity: 0.35;
    left: 35%;
    bottom: 13%;
    transform: rotate(-6deg) scale(1);
  }
  75% {
    opacity: 0.3;
    left: 55%;
    bottom: 22%;
    transform: rotate(-14deg) scale(0.95);
  }
  88% {
    opacity: 0.18;
    left: 76%;
    bottom: 42%;
    transform: rotate(-22deg) scale(0.88);
  }
  100% {
    opacity: 0;
    left: 95%;
    bottom: 70%;
    transform: rotate(-30deg) scale(0.75);
  }
}