/* ===========================
   style.css
   =========================== */

/* ===========================
   1. Variables
   =========================== */
:root {
  /* Colors */
  --color_main:   #007AB6;   /* 青（濃） */
  --color_sub:    #4EABDA;   /* 青（薄） */
  --color_bg:     #FAF5EB;   /* ベージュ（メイン背景） */

  /* Derived / utility colors (text・border は変数管理のみ、色数制限の対象外) */
  --color_text:         #2D2D2D;
  --color_text_light:   #686460;
  --color_border:       #DADADA;
  --color_white:        #FFFFFF;
  --color_bg_alt:       #F8F9FA;   /* セクション背景（ニュートラル） */
  --color_footer_bg:    #004F78;   /* フッター背景（メインカラー濃） */
  --color_heading:      #01366A;

  /* Typography */
  --font_family:        'Kumbh Sans', 'Zen Kaku Gothic New', sans-serif;
  --font_family_en:     'Kumbh Sans', sans-serif;
  --font_weight_normal: 500;
  --font_weight_bold:   600;
  --line_height_base:   1.9;
  --line_height_heading: 1.45;

  /* Spacing */
  --space:  8px;   /* base unit */

  /* Radius */
  --radius_sm: 4px;
  --radius_md: 8px;
  --radius_lg: 16px;

  /* Transition */
  --transition: 0.28s ease;

  /* Layout */
  --header_height: 80px;
  --content_width: 1200px;
}


/* ===========================
   2. Base
   =========================== */
html {
  scroll-padding-top: calc(var(--header_height) + 16px);
}

body {
  font-family: var(--font_family);
  font-weight: var(--font_weight_normal);
  font-size: 16px;
  color: var(--color_text);
  background-color: var(--color_bg);
  line-height: var(--line_height_base);
}

body:not(.home) {
  background-color: var(--color_bg_alt);
}


/* ===========================
   3. Layout utilities
   =========================== */
.inner {
  width: 90%;
  max-width: var(--content_width);
  margin-inline: auto;
}

/* Section header block */
.section_header {
  text-align: center;
  margin-bottom: calc(var(--space) * 7);
}

.section_label {
  display: block;
  font-family: var(--font_family_en);
  font-size: 14px;
  font-weight: var(--font_weight_bold);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color_sub);
  margin-bottom: calc(var(--space) * 1.5);
}

.section_title {
  display: inline-block;
  font-size: clamp(22px, calc(30 / 1440 * 100vw), 30px);
  font-weight: var(--font_weight_bold);
  color: var(--color_heading);
  line-height: var(--line_height_heading);
  padding-bottom: calc(var(--space) * 2.5);
  position: relative;
}

.section_title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  translate: -50% 0;
  width: 36px;
  height: 2px;
  background-color: var(--color_sub);
  border-radius: 2px;
}


/* ===========================
   4. Components
   =========================== */

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 32px;
  border-radius: var(--radius_sm);
  font-size: 14px;
  font-weight: var(--font_weight_bold);
  letter-spacing: 0.06em;
  border: 2px solid transparent;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition);
  cursor: pointer;
  white-space: nowrap;
}

.btn_primary {
  background-color: var(--color_main);
  color: var(--color_white);
  border-color: var(--color_main);
}

.btn_primary:hover {
  background-color: transparent;
  color: var(--color_main);
}

.btn_outline {
  background-color: transparent;
  color: var(--color_main);
  border-color: var(--color_main);
}

.btn_outline:hover {
  background-color: var(--color_main);
  color: var(--color_white);
}

/* --- Link more --- */
.link_more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: var(--font_weight_bold);
  letter-spacing: 0.04em;
  color: var(--color_main);
  border-bottom: 1px solid var(--color_sub);
  padding-bottom: 3px;
  transition: color var(--transition), border-color var(--transition);
}

.link_more:hover {
  color: var(--color_sub);
  border-color: transparent;
}

/* SP専用改行 */
.sp_br { display: none; }

/* PC専用改行 */
.pc_br { display: inline; }

/* --- Fade-in animation --- */
.fade_in {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.fade_in.is_visible {
  opacity: 1;
  transform: translateY(0);
}

.fade_in[data-delay="1"] { transition-delay: 0.1s; }
.fade_in[data-delay="2"] { transition-delay: 0.2s; }
.fade_in[data-delay="3"] { transition-delay: 0.3s; }
.fade_in[data-delay="4"] { transition-delay: 0.4s; }


/* ===========================
   5. Header
   =========================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 200;
  height: var(--header_height);
  background-color: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.header.is_scrolled {
  background-color: var(--color_white);
  border-bottom-color: var(--color_border);
  box-shadow: 0 2px 20px rgba(44, 95, 138, 0.10);
}

.header_inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  width: 90%;
  max-width: var(--content_width);
  margin-inline: auto;
}

.header_logo a {
  display: flex;
  align-items: center;
  gap: calc(var(--space) * 1.5);
}

.header_logo_img {
  width: 56px;
  height: 56px;
  object-fit: contain;
  flex-shrink: 0;
}

.header_logo_text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.header_logo_corp {
  display: block;
  font-size: 14px;
  font-weight: var(--font_weight_normal);
  color: var(--color_text);
  letter-spacing: 0.03em;
  line-height: 1.3;
}

.header_logo_name {
  display: block;
  font-size: 18px;
  font-weight: var(--font_weight_bold);
  color: var(--color_text);
  letter-spacing: 0.03em;
  line-height: 1.3;
}

.header_nav_list {
  display: flex;
  align-items: center;
  gap: calc(var(--space) * 4);
}

.header_nav_list > li > a {
  font-size: 14px;
  font-weight: var(--font_weight_bold);
  color: var(--color_text);
  letter-spacing: 0.04em;
  position: relative;
  transition: color var(--transition);
}

.header_nav_list > li > a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color_main);
  transition: width var(--transition);
}

.header_nav_list > li > a:hover {
  color: var(--color_main);
}

.header_nav_list > li > a:hover::after {
  width: 100%;
}

/* Contact button in nav */
.header_nav_contact {
  background-color: var(--color_main) !important;
  color: var(--color_white) !important;
  padding: 8px 20px;
  border-radius: var(--radius_sm);
  transition: background-color var(--transition) !important;
}

.header_nav_contact:hover {
  background-color: var(--color_sub) !important;
}

.header_nav_contact::after {
  display: none !important;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 40px;
  height: 40px;
  padding: 8px;
  flex-shrink: 0;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color_main);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
  transform-origin: center;
}

.hamburger.is_open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger.is_open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.is_open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}


/* ===========================
   6. Hero / FV
   =========================== */
.hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--space) * 9) 0 calc(var(--space) * 5);
  background-color: var(--color_bg);
}

/* Decorative bg shape */
.hero::before {
  content: '';
  position: absolute;
  top: -10%;
  right: -5%;
  width: 54%;
  height: 120%;
  background-color: var(--color_sub);
  opacity: 0.07;
  border-radius: 60% 0 0 60%;
  pointer-events: none;
}

.hero_inner {
  width: min(100%, 1680px);
  max-width: none;
  margin-left: auto;
  margin-right: 0;
  position: relative;
  display: flex;
  align-items: center;
  gap: 0;
}

.hero_content {
  flex: 0 0 35%;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 clamp(24px, 3vw, 48px);
  text-align: left;
}

.hero_title {
  display: inline-block;
  font-size: clamp(28px, calc(46 / 1440 * 100vw), 46px);
  font-weight: var(--font_weight_bold);
  color: var(--color_heading);
  writing-mode: vertical-rl;
  text-orientation: upright;
  white-space: nowrap;
  line-height: 1.5;
  letter-spacing: 0.04em;
  margin-bottom: 0;
}

.activity .section_header,
.news .section_header {
  text-align: left;
}

.activity .section_title::after,
.news .section_title::after {
  left: 0;
  translate: 0 0;
}

.hero_visual {
  flex: 0 0 65%;
  min-width: 0;
  width: auto;
  display: flex;
  justify-content: flex-end;
}

.hero_slider {
  position: relative;
  width: 100%;
  min-height: clamp(340px, 42vw, 620px);
  border-radius: 50px 0 0 50px;
  overflow: hidden;
  background-color: rgba(0, 122, 182, 0.08);
}

.hero_slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.4s ease;
}

.hero_slide.is_active {
  opacity: 1;
}

.hero_slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero_marquee {
  position: relative;
  z-index: 2;
  margin-top: calc(var(--space) * -3);
  overflow: hidden;
  padding: calc(var(--space) * 1.5) 0;
}

.hero_marquee_track {
  display: flex;
  width: max-content;
  animation: hero-marquee 48s linear infinite;
}

.hero_marquee_track span {
  flex: 0 0 auto;
  padding-right: calc(var(--space) * 6);
  font-family: var(--font_family_en);
  font-size: clamp(34px, calc(72 / 1440 * 100vw), 72px);
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1;
  color: rgba(0, 122, 182, 0.12);
  white-space: nowrap;
}

@keyframes hero-marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}


/* ===========================
   7. Message
   =========================== */
.message {
  padding: calc(var(--space) * 16) 0;
  background-color: var(--color_white);
}

.message_inner {
  width: 100%;
  max-width: none;
  margin: 0;
  padding-left: clamp(24px, 5vw, 72px);
  padding-right: clamp(24px, 5vw, 72px);
}

.message_label {
  font-family: var(--font_family_en);
  font-size: 14px;
  font-weight: var(--font_weight_bold);
  letter-spacing: 0.16em;
  color: var(--color_sub);
  line-height: 1.2;
  margin-bottom: calc(var(--space) * 3);
}

.message_lead {
  font-size: clamp(24px, calc(28 / 1440 * 100vw), 32px);
  font-weight: var(--font_weight_bold);
  color: var(--color_text);
  line-height: 1.65;
  padding: 0;
  margin-bottom: calc(var(--space) * 6);
  text-align: left;
}

.message_lead strong {
  color: var(--color_sub);
}

.message_body {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(320px, 460px);
  gap: calc(var(--space) * 8);
  align-items: start;
  justify-content: space-between;
}

.message_intro {
  display: flex;
  flex-direction: column;
}

.message_image {
  width: calc(100% + clamp(24px, 5vw, 72px));
  margin-left: calc(clamp(24px, 5vw, 72px) * -1);
  border-radius: 0 28px 28px 0;
  overflow: hidden;
  box-shadow: 0 18px 40px rgba(44, 95, 138, 0.14);
}

.message_image img {
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 4.2;
  object-fit: cover;
}

.message_text {
  display: flex;
  flex-direction: column;
  gap: calc(var(--space) * 3);
  margin-top: calc(var(--space) * 12);
}

.message_text p {
  font-size: 16px;
  color: var(--color_text);
  line-height: 2;
  font-size: clamp(16px, calc(20 / 1440 * 100vw), 22px)!important;
}

.message_body strong {
  font-weight: var(--font_weight_bold);
  color: var(--color_main);
}


/* ===========================
   8. Activity
   =========================== */
.activity {
  padding: calc(var(--space) * 16) 0;
  background-color: var(--color_bg_alt);
}

.activity_grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: calc(var(--space) * 3);
}

.activity_card {
  background-color: var(--color_white);
  border-radius: var(--radius_md);
  padding: calc(var(--space) * 5) calc(var(--space) * 4);
  transition: transform var(--transition), box-shadow var(--transition);
}

.activity_card:hover {
  transform: translateY(-6px);
  box-shadow: 0 10px 32px rgba(44, 95, 138, 0.13);
}

.activity_card_title {
  font-size: clamp(18px, calc(24 / 1440 * 100vw), 24px);
  font-weight: var(--font_weight_bold);
  color: var(--color_main);
  line-height: var(--line_height_heading);
  margin-bottom: calc(var(--space) * 2);
}

.activity_card_text {
  font-size: 14px;
  color: var(--color_text_light);
  line-height: 1.8;
}


/* ===========================
   9. News
   =========================== */
.news {
  padding: calc(var(--space) * 16) 0;
  background-color: var(--color_white);
}

.news_list {
  border-top: 1px solid var(--color_border);
  margin-bottom: calc(var(--space) * 5);
}

.news_item {
  border-bottom: 1px solid var(--color_border);
}

.news_link {
  display: flex;
  align-items: baseline;
  gap: calc(var(--space) * 2.5);
  padding: calc(var(--space) * 3) calc(var(--space) * 1);
  transition: color var(--transition);
}

.news_link:hover {
  color: var(--color_main);
}

.news_link:hover .news_title_text {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.news_date {
  font-family: var(--font_family_en);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--color_text_light);
  white-space: nowrap;
  flex-shrink: 0;
}

.news_category {
  font-size: 14px;
  font-weight: var(--font_weight_bold);
  letter-spacing: 0.04em;
  color: var(--color_main);
  background-color: var(--color_bg);
  padding: 3px 16px;
  border-radius: 4px;
  white-space: nowrap;
  flex-shrink: 0;
}

.news_title_text {
  font-size: 16px;
  line-height: 1.65;
  color: var(--color_text);
}

.news_footer {
  text-align: right;
}

.news_archive_page,
.news_single_page {
  padding: 120px 0 80px;
}

.news_archive_section.news {
  padding: 0;
  background-color: transparent;
}

.news_single_panel {
  background-color: var(--color_white);
  padding: clamp(28px, 4vw, 56px);
  border-radius: 24px;
  box-shadow: 0 16px 40px rgba(44, 95, 138, 0.08);
}

.news_archive_pagination {
  margin-top: calc(var(--space) * 5);
}

.news_archive_pagination .nav-links {
  display: flex;
  justify-content: center;
  gap: calc(var(--space) * 1.5);
  flex-wrap: wrap;
}

.news_archive_pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 42px;
  padding: 0 12px;
  border: 1px solid var(--color_border);
  border-radius: 999px;
  color: var(--color_text);
}

.news_archive_pagination .page-numbers.current,
.news_archive_pagination .page-numbers:hover {
  background-color: var(--color_main);
  border-color: var(--color_main);
  color: var(--color_white);
}

.news_single_section {
  max-width: 960px;
}

.news_single_meta {
  display: flex;
  align-items: center;
  gap: calc(var(--space) * 2);
  margin-bottom: calc(var(--space) * 3);
  flex-wrap: wrap;
}

.news_single_category {
  display: inline-flex;
}

.news_single_title {
  font-size: clamp(20px, calc(38 / 1440 * 100vw), 38px);
  line-height: 1.5;
  color: var(--color_heading);
  margin-bottom: calc(var(--space) * 4);
}

.news_single_content {
  color: var(--color_text);
  line-height: 2;
}

.news_single_content > * + * {
  margin-top: calc(var(--space) * 3);
}

.news_single_back {
  margin-top: calc(var(--space) * 5);
}

.news_single_back a {
  color: var(--color_main);
  font-weight: var(--font_weight_bold);
}

.page_header {
  margin-top: var(--header_height);
  padding: 56px 0;
  background-color: var(--color_heading);
  color: var(--color_white);
}

.page_header_inner {
  display: flex;
  flex-direction: column;
  gap: calc(var(--space) * 2);
}

.page_header_label {
  font-family: var(--font_family_en);
  font-size: 14px;
  font-weight: var(--font_weight_bold);
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.72);
  text-transform: uppercase;
}

.page_header_title {
  font-size: clamp(30px, calc(46 / 1440 * 100vw), 46px);
  font-weight: var(--font_weight_bold);
  line-height: 1.4;
  color: var(--color_white);
}

.page_default {
  padding: 64px 0 80px;
}

.page_default_inner {
  max-width: 960px;
}

.page_default_content {
  background-color: var(--color_white);
  padding: clamp(28px, 4vw, 56px);
  border-radius: 24px;
  box-shadow: 0 16px 40px rgba(44, 95, 138, 0.08);
}

.page_default_content > * + * {
  margin-top: calc(var(--space) * 3);
}


/* ===========================
   10. Contact CTA
   =========================== */
.contact_cta {
  padding: calc(var(--space) * 14) 0;
  background-color: var(--color_main);
  text-align: center;
}

.contact_cta_title {
  font-size: clamp(20px, calc(26 / 1440 * 100vw), 26px);
  font-weight: var(--font_weight_bold);
  color: var(--color_white);
  line-height: 1.6;
  margin-bottom: calc(var(--space) * 3);
}

.contact_cta_text {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.9;
  margin-bottom: calc(var(--space) * 6);
}

/* White button for dark bg */
.contact_cta .btn_primary {
  background-color: var(--color_white);
  color: var(--color_main);
  border-color: var(--color_white);
}

.contact_cta .btn_primary:hover {
  background-color: transparent;
  color: var(--color_white);
  border-color: rgba(255, 255, 255, 0.8);
}


/* ===========================
   11. Contact Form 7
   =========================== */
.wpcf7 {
  max-width: 880px;
}

.wpcf7 form {
  padding: 0;
}

.wpcf7 form > p {
  margin-bottom: calc(var(--space) * 4);
}

.wpcf7 form > p:last-of-type {
  margin-bottom: 0;
}

.wpcf7 .form_label {
  display: inline-block;
  margin-bottom: calc(var(--space) * 1.5);
  font-size: 15px;
  font-weight: var(--font_weight_bold);
  color: var(--color_heading);
  line-height: 1.6;
}

.wpcf7 .required {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 8px;
  border-radius: 999px;
  background-color: var(--color_main);
  color: var(--color_white);
  font-size: 11px;
  font-weight: var(--font_weight_bold);
  letter-spacing: 0.06em;
  vertical-align: middle;
}

.wpcf7 input[type="text"],
.wpcf7 input[type="email"],
.wpcf7 input[type="tel"],
.wpcf7 select,
.wpcf7 textarea {
  width: 100%;
  border: 1px solid var(--color_border);
  border-radius: 12px;
  background-color: #fff;
  padding: 14px 16px;
  font-size: 16px;
  color: var(--color_text);
  line-height: 1.7;
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
}

.wpcf7 select {
  background-image: linear-gradient(45deg, transparent 50%, var(--color_main) 50%), linear-gradient(135deg, var(--color_main) 50%, transparent 50%);
  background-position: calc(100% - 20px) calc(50% - 2px), calc(100% - 14px) calc(50% - 2px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: 44px;
}

.wpcf7 textarea {
  min-height: 220px;
  resize: vertical;
}

.wpcf7 input[type="text"]:focus,
.wpcf7 input[type="email"]:focus,
.wpcf7 input[type="tel"]:focus,
.wpcf7 select:focus,
.wpcf7 textarea:focus {
  outline: none;
  border-color: var(--color_main);
  box-shadow: 0 0 0 4px rgba(0, 122, 182, 0.12);
}

.wpcf7 .wpcf7-not-valid-tip {
  margin-top: 8px;
  font-size: 13px;
}

.wpcf7 .wpcf7-spinner {
  vertical-align: middle;
}

.wpcf7 .wpcf7-submit {
  min-width: 220px;
  padding: 14px 28px;
  border: 2px solid var(--color_main);
  border-radius: 999px;
  background-color: var(--color_main);
  color: var(--color_white);
  font-size: 15px;
  font-weight: var(--font_weight_bold);
  letter-spacing: 0.08em;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}

.wpcf7 .wpcf7-submit:hover {
  background-color: transparent;
  color: var(--color_main);
}

.wpcf7 .wpcf7-response-output {
  margin: calc(var(--space) * 3) 0 0;
  padding: 12px 16px;
  border-radius: 12px;
}


/* ===========================
   13. Footer
   =========================== */
.footer {
  background-color: var(--color_footer_bg);
  color: rgba(255, 255, 255, 0.72);
  padding: calc(var(--space) * 12) 0 calc(var(--space) * 6);
}

.footer_top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: calc(var(--space) * 8);
  padding-bottom: calc(var(--space) * 8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  margin-bottom: calc(var(--space) * 5);
}

.footer_info {
  max-width: 280px;
}

.footer_org_name {
  font-size: 16px;
  font-weight: var(--font_weight_bold);
  color: var(--color_white);
  line-height: 1.65;
  margin-bottom: calc(var(--space) * 3);
}

.footer_address,
.footer_tel {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: calc(var(--space) * 0.5);
}

.footer_nav_list {
  display: flex;
  flex-direction: column;
  gap: calc(var(--space) * 2.5);
  text-align: right;
}

.footer_nav_list a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  transition: color var(--transition);
}

.footer_nav_list a:hover {
  color: var(--color_white);
}

.footer_bottom {
  text-align: center;
}

.footer_copy {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.38);
  letter-spacing: 0.04em;
}


/* ===========================
   14. Responsive — Tablet (≤1024px)
   =========================== */
@media (max-width: 1024px) {
  .activity_grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero_inner {
    width: 100%;
    max-width: none;
    gap: 0;
  }

  .hero_content {
    flex-basis: 35%;
    padding: 0 clamp(20px, 3vw, 32px);
  }

  .hero_visual {
    flex-basis: 65%;
  }

  .about_content {
    gap: calc(var(--space) * 8);
  }

  .about_visual {
    width: min(380px, 40%);
  }
}

@media (max-width: 968px) {
  .message_body {
    grid-template-columns: 1fr;
    gap: calc(var(--space) * 4);
  }

  .message_text {
    margin-top: 0;
  }
}


/* ===========================
   15. Responsive — SP (≤768px)
   =========================== */
@media (max-width: 768px) {
  :root {
    --header_height: 62px;
  }

  /* ---- Header ---- */
  .hamburger {
    display: flex;
  }

  .header_nav {
    position: fixed;
    top: var(--header_height);
    left: 0;
    right: 0;
    background-color: var(--color_white);
    border-bottom: 1px solid var(--color_border);
    padding: calc(var(--space) * 4) 5%;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
    z-index: 100;
  }

  .header_nav.is_open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .header_nav_list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .header_nav_list > li > a {
    display: block;
    padding: calc(var(--space) * 2) 0;
    border-bottom: 1px solid var(--color_border);
    font-size: 16px;
  }

  .header_nav_list > li:last-child > a {
    border-bottom: none;
    margin-top: calc(var(--space) * 2);
    text-align: center;
    padding: 12px 20px;
    border-radius: var(--radius_sm);
  }

  .header_nav_list > li > a::after {
    display: none;
  }

  /* ---- Hero ---- */
  .hero {
    padding: calc(var(--space) * 8) 0 calc(var(--space) * 5);
  }

  .hero::before { display: none; }

  .hero_inner {
    flex-direction: column;
    align-items: stretch;
    gap: calc(var(--space) * 5);
  }

  .hero_content {
    padding: 60px 5% 0;
    display: block;
    flex-basis: auto;
    text-align: left;
  }

  .hero_title {
    font-size: clamp(24px, 7vw, 36px);
    writing-mode: horizontal-tb;
    text-orientation: mixed;
    line-height: 1.5;
    letter-spacing: 0.02em;
  }

  .hero_visual {
    width: 95%;
    margin-left: auto;
    justify-content: center;
  }

  .hero_slider {
    min-height: clamp(280px, 62vw, 440px);
    border-radius: 32px 0 0 32px;
  }

  .hero_marquee {
    margin-top: calc(var(--space) * -2);
  }

  .hero_marquee_track span {
    font-size: clamp(28px, 11vw, 48px);
    padding-right: calc(var(--space) * 4);
  }

  /* ---- Utilities ---- */
  .sp_br { display: inline; }
  .pc_br { display: none; }

  /* ---- News ---- */
  .news_link {
    flex-wrap: wrap;
    align-items: center;
    row-gap: calc(var(--space) * 1);
  }

  .news_title_text {
    flex-basis: 100%;
  }

  .news_archive_page,
  .news_single_page {
    padding: 64px 0 64px;
  }

  .page_header {
    padding: 40px 0;
  }

  .page_header_title {
    font-size: clamp(24px, 8vw, 34px);
  }

  .news_single_panel {
    padding: 24px 20px;
    border-radius: 20px;
  }

  .page_default {
    padding: 100px 0 64px;
  }

  .page_default_content {
    padding: 24px 20px;
    border-radius: 20px;
  }

  /* ---- Message ---- */
  .message_inner {
    text-align: left;
  }

  .wpcf7 form {
    padding: 0;
  }

  .wpcf7 textarea {
    min-height: 180px;
  }

  .wpcf7 .wpcf7-submit {
    width: 100%;
    min-width: 0;
  }

  .message_lead {
    font-size: clamp(20px, 5vw, 30px);
    text-align: left;
  }

  .message_body {
    gap: calc(var(--space) * 4);
  }

  /* ---- Activity ---- */
  .activity_grid {
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--space) * 2.5);
  }

  /* ---- Footer ---- */
  .footer_top {
    flex-direction: column;
    gap: calc(var(--space) * 5);
  }

  .footer_nav_list {
    text-align: left;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--space) * 1.5) calc(var(--space) * 4);
  }
}

@media (max-width: 480px) {
  .activity_grid {
    grid-template-columns: 1fr;
  }

  .hero_content {
    padding-left: 6%;
    padding-right: 6%;
  }

  .hero_slider {
    min-height: 240px;
    border-radius: 24px 0 0 24px;
  }

  .btn {
    width: 100%;
    max-width: 280px;
  }
}