/*
Theme Name: 西東京少林武術研究会
Theme URI: https://nishitokyo-shorinji.example.com
Author: 西東京少林武術研究会
Description: 西東京少林武術研究会の公式ウェブサイトテーマ
Version: 1.0.0
License: GNU General Public License v2 or later
Text Domain: nishitokyo-shorinji
*/

/* ===========================
   CSS カスタムプロパティ
=========================== */
:root {
  --color-ink: #1a1108;
  --color-ash: #2c2416;
  --color-gold: #c8922a;
  --color-gold-light: #e8b84b;
  --color-red: #8b1a1a;
  --color-red-deep: #5c0f0f;
  --color-paper: #f5efe3;
  --color-paper-dark: #ede4d0;
  --color-mist: #d4c9b0;
  --color-white: #fdfaf5;

  --font-serif-jp: 'Noto Serif JP', 'Yu Mincho', '游明朝', serif;
  --font-display: 'Noto Serif JP', serif;
  --font-body: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow: 0 4px 24px rgba(26, 17, 8, 0.2);
  --shadow-lg: 0 12px 48px rgba(26, 17, 8, 0.35);
}

/* ===========================
   リセット & ベース
=========================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background-color: var(--color-paper);
  color: var(--color-ink);
  line-height: 1.8;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
ul { list-style: none; }

/* ===========================
   タイポグラフィ
=========================== */
h1, h2, h3, h4 {
  font-family: var(--font-serif-jp);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.05em;
}
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
p { margin-bottom: 1rem; }

.section-title {
  font-family: var(--font-serif-jp);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: var(--color-ash);
  position: relative;
  display: inline-block;
  padding-bottom: 0.6rem;
  margin-bottom: var(--space-md);
}
.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-red));
}
.section-subtitle {
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  color: var(--color-gold);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  font-family: var(--font-body);
}

/* ===========================
   ヘッダー・ナビゲーション
=========================== */
#site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(26, 17, 8, 0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(200, 146, 42, 0.3);
  transition: var(--transition);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  height: 72px;
}
.site-branding {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.site-logo-mark {
  width: 44px;
  height: 44px;
  border: 2px solid var(--color-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif-jp);
  font-size: 1.1rem;
  color: var(--color-gold);
  flex-shrink: 0;
}
.site-name {
  font-family: var(--font-serif-jp);
  font-size: 1rem;
  color: var(--color-paper);
  line-height: 1.4;
  letter-spacing: 0.05em;
}
.site-name span {
  display: block;
  font-size: 0.7rem;
  color: var(--color-mist);
  letter-spacing: 0.1em;
}
.main-nav ul {
  display: flex;
  gap: var(--space-md);
}
.main-nav a {
  color: var(--color-mist);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  padding: 0.25rem 0;
  position: relative;
  font-family: var(--font-body);
}
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background: var(--color-gold);
  transition: width var(--transition);
}
.main-nav a:hover { color: var(--color-gold-light); }
.main-nav a:hover::after { width: 100%; }
.nav-cta {
  background: var(--color-red);
  color: var(--color-white) !important;
  padding: 0.5rem 1.2rem !important;
  border-radius: 2px;
  border: 1px solid var(--color-red-deep);
}
.nav-cta:hover { background: var(--color-red-deep) !important; }
.nav-cta::after { display: none !important; }

/* ハンバーガーメニュー */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.5rem;
  background: none;
  border: none;
}
.nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--color-mist);
  transition: var(--transition);
}
.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); }

/* ===========================
   ヒーローセクション
=========================== */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-ink);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(139, 26, 26, 0.25) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(200, 146, 42, 0.1) 0%, transparent 50%),
    linear-gradient(135deg, #1a1108 0%, #2c1810 40%, #1a1108 100%);
}
.hero-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 40px, var(--color-gold) 40px, var(--color-gold) 41px),
    repeating-linear-gradient(90deg, transparent, transparent 40px, var(--color-gold) 40px, var(--color-gold) 41px);
}
.hero-kanji {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-serif-jp);
  font-size: clamp(8rem, 18vw, 20rem);
  color: rgba(200, 146, 42, 0.06);
  line-height: 1;
  writing-mode: vertical-rl;
  user-select: none;
  letter-spacing: 0.1em;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: calc(var(--space-lg) + 72px) var(--space-md) var(--space-lg);
}
.hero-badge {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  border: 1px solid rgba(200, 146, 42, 0.5);
  padding: 0.35rem 1rem;
  margin-bottom: 1.5rem;
  font-family: var(--font-body);
}
.hero-title {
  font-family: var(--font-serif-jp);
  color: var(--color-white);
  margin-bottom: 1rem;
  font-size: clamp(2.5rem, 6vw, 5rem);
  line-height: 1.2;
}
.hero-title .accent { color: var(--color-gold); }
.hero-sub {
  font-family: var(--font-serif-jp);
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: var(--color-mist);
  margin-bottom: 0.5rem;
  letter-spacing: 0.15em;
}
.hero-desc {
  font-size: clamp(0.9rem, 1.5vw, 1rem);
  color: rgba(212, 201, 176, 0.8);
  max-width: 500px;
  margin-bottom: var(--space-md);
  line-height: 1.9;
}
.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 2rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.btn-primary {
  background: var(--color-red);
  color: var(--color-white);
  border: 2px solid var(--color-red);
}
.btn-primary:hover {
  background: var(--color-red-deep);
  border-color: var(--color-red-deep);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(139, 26, 26, 0.5);
}
.btn-outline {
  background: transparent;
  color: var(--color-gold);
  border: 2px solid rgba(200, 146, 42, 0.6);
}
.btn-outline:hover {
  background: rgba(200, 146, 42, 0.1);
  border-color: var(--color-gold);
}
.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-mist);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  opacity: 0.6;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, var(--color-gold), transparent);
  animation: scrollDown 2s ease-in-out infinite;
}
@keyframes scrollDown {
  0%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.5); opacity: 0.3; }
}

/* ===========================
   セクション共通
=========================== */
.section {
  padding: var(--space-xl) var(--space-md);
}
.section-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.section-header {
  margin-bottom: var(--space-lg);
}
.section-dark {
  background: var(--color-ash);
  color: var(--color-paper);
}
.section-dark .section-title { color: var(--color-paper); }

/* ===========================
   武術とは（紹介）
=========================== */
#about { background: var(--color-white); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}
.about-visual {
  position: relative;
}
.about-img-wrapper {
  position: relative;
  aspect-ratio: 4/5;
  overflow: hidden;
  background: var(--color-ash);
}
.about-img-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-ash) 0%, #3d2f1a 100%);
}
.about-img-placeholder .kanji-large {
  font-family: var(--font-serif-jp);
  font-size: 8rem;
  color: rgba(200, 146, 42, 0.3);
  writing-mode: vertical-rl;
  letter-spacing: 0.2em;
}
.about-img-frame {
  position: absolute;
  top: -12px;
  left: -12px;
  right: 12px;
  bottom: 12px;
  border: 2px solid var(--color-gold);
  pointer-events: none;
  z-index: -1;
}
.about-text .lead {
  font-family: var(--font-serif-jp);
  font-size: 1.1rem;
  color: var(--color-ash);
  line-height: 1.9;
  margin-bottom: 1.5rem;
  border-left: 3px solid var(--color-gold);
  padding-left: 1rem;
}
.about-text p {
  font-size: 0.95rem;
  color: #4a3a2a;
  line-height: 1.9;
}
.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: var(--space-md);
}
.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--color-paper);
  border-left: 3px solid var(--color-red);
}
.feature-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
}
.feature-item h4 {
  font-size: 0.9rem;
  margin-bottom: 0.2rem;
  color: var(--color-ash);
}
.feature-item p {
  font-size: 0.8rem;
  color: #6a5a4a;
  margin: 0;
}

/* ===========================
   稽古内容
=========================== */
#training { background: var(--color-paper-dark); }
.training-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-md);
}
.training-card {
  background: var(--color-white);
  padding: var(--space-md);
  position: relative;
  border-top: 3px solid transparent;
  transition: var(--transition);
  box-shadow: 0 2px 12px rgba(26, 17, 8, 0.08);
}
.training-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-red), var(--color-gold));
  transform: scaleX(0);
  transition: transform var(--transition);
  transform-origin: left;
}
.training-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.training-card:hover::before { transform: scaleX(1); }
.card-number {
  font-family: var(--font-serif-jp);
  font-size: 3rem;
  color: rgba(200, 146, 42, 0.2);
  line-height: 1;
  margin-bottom: 0.5rem;
}
.card-icon { font-size: 2rem; margin-bottom: 0.75rem; }
.training-card h3 {
  font-size: 1.1rem;
  color: var(--color-ash);
  margin-bottom: 0.5rem;
}
.training-card p {
  font-size: 0.85rem;
  color: #5a4a3a;
  line-height: 1.8;
  margin: 0;
}

/* ===========================
   稽古スケジュール
=========================== */
#schedule { background: var(--color-ink); }
#schedule .section-title { color: var(--color-paper); }
.schedule-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
}
.schedule-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(200, 146, 42, 0.2);
  padding: var(--space-md);
  transition: var(--transition);
}
.schedule-card:hover {
  background: rgba(200, 146, 42, 0.08);
  border-color: rgba(200, 146, 42, 0.5);
}
.schedule-day {
  font-family: var(--font-serif-jp);
  font-size: 1.4rem;
  color: var(--color-gold);
  margin-bottom: 0.25rem;
}
.schedule-time {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}
.schedule-info {
  font-size: 0.85rem;
  color: var(--color-mist);
}
.schedule-badge {
  display: inline-block;
  margin-top: 0.75rem;
  padding: 0.2rem 0.75rem;
  background: rgba(139, 26, 26, 0.5);
  border: 1px solid rgba(139, 26, 26, 0.8);
  color: #ffaaaa;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}
.schedule-location {
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.04);
  border-left: 3px solid var(--color-gold);
}
.schedule-location h3 {
  color: var(--color-gold);
  font-size: 1rem;
  margin-bottom: 0.5rem;
}
.schedule-location p {
  color: var(--color-mist);
  font-size: 0.9rem;
  margin: 0;
}

/* ===========================
   入会案内
=========================== */
#join { background: var(--color-white); }
.join-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}
.join-info h3 {
  font-size: 1.1rem;
  color: var(--color-red);
  margin-bottom: var(--space-sm);
}
.fee-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--space-md);
}
.fee-table th, .fee-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--color-paper-dark);
}
.fee-table th {
  background: var(--color-ash);
  color: var(--color-gold);
  font-family: var(--font-serif-jp);
  font-weight: 500;
}
.fee-table tr:last-child td { border-bottom: none; }
.fee-table td:last-child {
  text-align: right;
  font-weight: 600;
  color: var(--color-red);
}
.join-notes {
  font-size: 0.82rem;
  color: #7a6a5a;
  border-top: 1px solid var(--color-paper-dark);
  padding-top: 1rem;
}
.join-notes li { padding: 0.2rem 0; padding-left: 1rem; position: relative; }
.join-notes li::before { content: '※'; position: absolute; left: 0; color: var(--color-gold); }
.contact-form-block {
  background: var(--color-paper);
  padding: var(--space-md);
}
.contact-form-block h3 {
  font-size: 1.1rem;
  margin-bottom: var(--space-sm);
  color: var(--color-ash);
}
.form-group { margin-bottom: 1rem; }
.form-group label {
  display: block;
  font-size: 0.82rem;
  color: #5a4a3a;
  margin-bottom: 0.35rem;
  letter-spacing: 0.05em;
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 0.7rem 1rem;
  background: var(--color-white);
  border: 1px solid var(--color-mist);
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--color-ink);
  transition: border-color var(--transition);
  outline: none;
  border-radius: 0;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--color-gold);
}
.form-group textarea { height: 120px; resize: vertical; }
.form-submit {
  width: 100%;
  background: var(--color-red);
  color: var(--color-white);
  border: none;
  padding: 0.9rem;
  font-family: var(--font-serif-jp);
  font-size: 1rem;
  letter-spacing: 0.15em;
  cursor: pointer;
  transition: var(--transition);
}
.form-submit:hover { background: var(--color-red-deep); }

/* ===========================
   お知らせ
=========================== */
#news { background: var(--color-paper-dark); }
.news-list { display: flex; flex-direction: column; gap: 0; }
.news-item {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  padding: 1.2rem 0;
  border-bottom: 1px solid rgba(200, 146, 42, 0.2);
  transition: var(--transition);
}
.news-item:hover { padding-left: 0.5rem; }
.news-date {
  flex-shrink: 0;
  font-size: 0.8rem;
  color: var(--color-gold);
  letter-spacing: 0.05em;
  min-width: 90px;
}
.news-cat {
  flex-shrink: 0;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  padding: 0.15rem 0.6rem;
  background: var(--color-red);
  color: var(--color-white);
  min-width: 60px;
  text-align: center;
}
.news-title {
  font-size: 0.9rem;
  color: var(--color-ash);
}
.news-more {
  margin-top: var(--space-md);
  text-align: center;
}

/* ===========================
   師範紹介
=========================== */
#instructor { background: var(--color-white); }
.instructor-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-lg);
  align-items: start;
}
.instructor-photo {
  aspect-ratio: 3/4;
  background: linear-gradient(135deg, var(--color-ash) 0%, #3d2f1a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.instructor-photo .kanji-large {
  font-family: var(--font-serif-jp);
  font-size: 5rem;
  color: rgba(200, 146, 42, 0.25);
}
.instructor-photo-frame {
  position: absolute;
  top: 10px; right: -10px;
  bottom: -10px; left: 10px;
  border: 2px solid var(--color-gold);
  z-index: -1;
}
.instructor-title {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--color-gold);
  margin-bottom: 0.25rem;
}
.instructor-name {
  font-family: var(--font-serif-jp);
  font-size: 2rem;
  color: var(--color-ash);
  margin-bottom: 0.25rem;
}
.instructor-name-en {
  font-size: 0.85rem;
  color: var(--color-mist);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
}
.instructor-profile { margin-bottom: var(--space-md); }
.instructor-profile p {
  font-size: 0.92rem;
  color: #4a3a2a;
  line-height: 1.9;
}
.credentials {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.credential {
  font-size: 0.78rem;
  padding: 0.3rem 0.8rem;
  border: 1px solid rgba(200, 146, 42, 0.5);
  color: var(--color-gold);
  letter-spacing: 0.05em;
}

/* ===========================
   アクセス
=========================== */
#access { background: var(--color-ash); }
#access .section-title { color: var(--color-paper); }
.access-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}
.access-map-placeholder {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(200,146,42,0.2);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--color-mist);
  letter-spacing: 0.1em;
  flex-direction: column;
  gap: 0.5rem;
}
.access-map-placeholder .map-icon { font-size: 3rem; opacity: 0.4; }
.access-details h3 {
  font-size: 1rem;
  color: var(--color-gold);
  margin-bottom: 0.75rem;
  font-family: var(--font-serif-jp);
  border-bottom: 1px solid rgba(200,146,42,0.2);
  padding-bottom: 0.5rem;
}
.access-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 0.75rem;
  font-size: 0.88rem;
}
.access-label {
  flex-shrink: 0;
  width: 70px;
  color: var(--color-mist);
}
.access-value { color: var(--color-paper); }

/* ===========================
   フッター
=========================== */
#site-footer {
  background: var(--color-ink);
  border-top: 1px solid rgba(200, 146, 42, 0.2);
  padding: var(--space-md) var(--space-md);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: var(--space-md);
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.footer-mark {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(200, 146, 42, 0.5);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif-jp);
  font-size: 0.9rem;
  color: var(--color-gold);
}
.footer-name {
  font-family: var(--font-serif-jp);
  font-size: 0.85rem;
  color: var(--color-mist);
}
.footer-copy {
  font-size: 0.72rem;
  color: rgba(212, 201, 176, 0.4);
  letter-spacing: 0.05em;
}
.footer-links {
  display: flex;
  gap: var(--space-sm);
}
.footer-links a {
  font-size: 0.78rem;
  color: rgba(212, 201, 176, 0.5);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--color-gold); }

/* ===========================
   アニメーション
=========================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===========================
   レスポンシブ
=========================== */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
  .training-grid { grid-template-columns: 1fr 1fr; }
  .join-wrapper { grid-template-columns: 1fr; }
  .instructor-layout { grid-template-columns: 1fr; }
  .access-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; text-align: center; }
  .footer-brand { justify-content: center; }
  .footer-links { justify-content: center; }
}
@media (max-width: 768px) {
  .main-nav { display: none; position: absolute; top: 72px; left: 0; right: 0; background: var(--color-ink); padding: var(--space-md); border-bottom: 1px solid rgba(200,146,42,0.2); }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 0.5rem; }
  .main-nav a { display: block; padding: 0.7rem 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
  .nav-toggle { display: flex; }
  .training-grid { grid-template-columns: 1fr; }
  .about-features { grid-template-columns: 1fr; }
  .hero-kanji { display: none; }
}