/* ============================================================
   splight corporate site — main.css
   参考意匠: 湯浅建設 / 翻案: splight 3事業
   ============================================================ */

:root {
  --c-main: #2e7d4f;          /* sprout green */
  --c-main-dark: #215a39;
  --c-accent-sun: #ffcf5c;    /* sun yellow */
  --c-accent-amber: #f59e0b;  /* warm amber */
  --c-text: #1a2b1f;
  --c-text-sub: #566a5c;
  --c-line: #d8dcd8;
  --c-bg: #f7f6f2;            /* warm off-white */
  --c-bg-dark: #0f1a12;
  --c-white: #ffffff;
  --ff-ja: 'Zen Kaku Gothic New', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --ff-en: 'Outfit', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --easing: cubic-bezier(.22, .61, .36, 1);
  --radius: 14px;
  --radius-lg: 24px;
  --shadow: 0 10px 40px rgba(15, 26, 18, .08);
}

/* ----- reset ----- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--ff-ja);
  font-weight: 400;
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, video, iframe { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: opacity .25s var(--easing), color .25s var(--easing); }
a:hover { opacity: .78; }
ul, ol { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; cursor: pointer; border: 0; background: transparent; color: inherit; }
table { border-collapse: collapse; width: 100%; }

/* ----- container ----- */
.container {
  width: 100%;
  max-width: 1180px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ----- section heads ----- */
.section { padding: 120px 0; position: relative; }
.section-head { margin-bottom: 60px; }
.section-en {
  display: block;
  font-family: var(--ff-en);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: .24em;
  color: var(--c-main);
  text-transform: uppercase;
  margin-bottom: 14px;
  position: relative;
  padding-left: 50px;
}
.section-en::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  width: 40px; height: 1px;
  background: var(--c-main);
}
.section-ja {
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 700;
  letter-spacing: .02em;
  margin: 0;
  line-height: 1.3;
}
.section-desc {
  margin-top: 18px;
  color: var(--c-text-sub);
  font-size: 15px;
}

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0);
  backdrop-filter: blur(0);
  transition: background .35s var(--easing), backdrop-filter .35s var(--easing), box-shadow .35s var(--easing);
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(15, 26, 18, .06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  gap: 28px;
}
.header-logo img {
  height: 36px;
  width: auto;
  transition: filter .35s var(--easing);
}
.site-header:not(.is-scrolled) .header-logo img {
  filter: brightness(0) invert(1);
}
.header-nav ul {
  display: flex;
  gap: 32px;
}
.header-nav a {
  display: block;
  position: relative;
  padding: 10px 0;
  color: var(--c-white);
  transition: color .35s var(--easing);
}
.site-header.is-scrolled .header-nav a { color: var(--c-text); }
.header-nav .en {
  font-family: var(--ff-en);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: .1em;
  display: block;
}
.header-nav .ja {
  font-size: 10px;
  letter-spacing: .08em;
  color: inherit;
  opacity: .65;
  display: block;
  margin-top: 2px;
}
.header-nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 4px;
  width: 0; height: 1px;
  background: var(--c-main);
  transition: width .35s var(--easing);
}
.header-nav a:hover::after { width: 100%; }

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  background: var(--c-main);
  color: var(--c-white) !important;
  border-radius: 999px;
  font-family: var(--ff-en);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: .12em;
  transition: background .35s var(--easing), transform .35s var(--easing);
}
.header-cta:hover { background: var(--c-main-dark); opacity: 1; transform: translateX(2px); }

.header-burger {
  display: none;
  width: 38px; height: 38px;
  position: relative;
}
.header-burger span {
  position: absolute;
  left: 7px;
  width: 24px; height: 2px;
  background: var(--c-white);
  transition: transform .35s var(--easing), top .35s var(--easing), background .35s var(--easing), opacity .25s var(--easing);
}
.header-burger span:nth-child(1) { top: 11px; }
.header-burger span:nth-child(2) { top: 18px; }
.header-burger span:nth-child(3) { top: 25px; }
.site-header.is-scrolled .header-burger span { background: var(--c-text); }
.header-burger[aria-expanded="true"] span,
.site-header.is-drawer-open .header-burger span { background: var(--c-white) !important; }
.site-header.is-drawer-open {
  background: transparent !important;
  backdrop-filter: none !important;
  box-shadow: none !important;
}
.header-burger {
  z-index: 110;
  position: relative;
}
.header-burger[aria-expanded="true"] span:nth-child(1) { top: 18px; transform: rotate(45deg); }
.header-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.header-burger[aria-expanded="true"] span:nth-child(3) { top: 18px; transform: rotate(-45deg); }

/* Mobile drawer */
.mobile-drawer {
  position: fixed;
  top: 0; right: 0;
  width: min(420px, 100%);
  height: 100vh;
  background: var(--c-bg-dark);
  color: var(--c-white);
  transform: translateX(100%);
  transition: transform .45s var(--easing);
  padding: 100px 36px 40px;
  display: flex;
  flex-direction: column;
  z-index: 90;
  overflow-y: auto;
}
.mobile-drawer.is-open { transform: translateX(0); }
.mobile-nav li + li { border-top: 1px solid rgba(255, 255, 255, .1); }
.mobile-nav a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 18px 0;
  color: var(--c-white);
}
.mobile-nav .en {
  font-family: var(--ff-en);
  font-weight: 500;
  font-size: 18px;
  letter-spacing: .08em;
}
.mobile-nav .ja {
  font-size: 12px;
  letter-spacing: .08em;
  opacity: .6;
}
.mobile-contact {
  margin-top: auto;
  display: grid;
  gap: 12px;
}
.mobile-contact a {
  background: rgba(255, 255, 255, .06);
  padding: 14px 18px;
  border-radius: 10px;
}
.mobile-contact small { display: block; font-size: 10px; letter-spacing: .2em; opacity: .55; font-family: var(--ff-en); }
.mobile-contact strong { font-weight: 500; font-size: 16px; }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 640px;
  overflow: hidden;
  background: var(--c-bg-dark);
  color: var(--c-white);
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg video {
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(15, 26, 18, .35) 0%, rgba(15, 26, 18, .1) 40%, rgba(15, 26, 18, .65) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 8vw;
  max-width: 1180px;
  margin: 0 auto;
}
.hero-eyebrow {
  font-family: var(--ff-en);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: .32em;
  text-transform: uppercase;
  opacity: .85;
  margin: 0 0 24px;
  position: relative;
  padding-left: 48px;
}
.hero-eyebrow::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  width: 36px; height: 1px;
  background: var(--c-accent-sun);
}
.hero-title {
  font-size: clamp(40px, 6.6vw, 88px);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 28px;
  letter-spacing: .02em;
}
.hero-title .line {
  display: block;
  overflow: hidden;
}
.hero-lead {
  font-size: clamp(14px, 1.2vw, 17px);
  line-height: 1.9;
  max-width: 540px;
  margin: 0;
  opacity: .92;
}
.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--c-white);
  font-family: var(--ff-en);
  font-size: 10px;
  letter-spacing: .32em;
}
.hero-scroll-line {
  width: 1px;
  height: 56px;
  background: rgba(255, 255, 255, .5);
  position: relative;
  overflow: hidden;
}
.hero-scroll-line::after {
  content: '';
  position: absolute;
  left: 0; top: -100%;
  width: 100%; height: 100%;
  background: var(--c-accent-sun);
  animation: scrollLine 2.2s var(--easing) infinite;
}
@keyframes scrollLine {
  0% { top: -100%; } 60%, 100% { top: 100%; }
}

/* ============================================================
   Philosophy
   ============================================================ */
.section-philosophy { background: var(--c-bg); }
.philosophy-lead {
  text-align: center;
  margin-bottom: 80px;
}
.philosophy-catch {
  font-size: clamp(22px, 2.8vw, 34px);
  font-weight: 700;
  line-height: 1.65;
  margin: 0 0 28px;
}
.mark-sprout {
  color: var(--c-main);
  font-style: normal;
  position: relative;
}
.mark-light {
  color: var(--c-accent-amber);
  font-style: normal;
  position: relative;
}
.philosophy-body {
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 2;
  margin: 0;
}
.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.philo-card {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  padding: 44px 32px 40px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(46, 125, 79, .08);
  transition: transform .45s var(--easing), box-shadow .45s var(--easing);
}
.philo-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(15, 26, 18, .12);
}
.philo-num {
  font-family: var(--ff-en);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: .2em;
  color: var(--c-main);
  margin-bottom: 18px;
}
.philo-ttl {
  font-family: var(--ff-en);
  font-weight: 700;
  font-size: 28px;
  margin: 0 0 16px;
  letter-spacing: .02em;
}
.philo-ttl span {
  display: inline-block;
  margin-left: 10px;
  font-family: var(--ff-ja);
  font-weight: 500;
  font-size: 14px;
  color: var(--c-text-sub);
}
.philo-card p {
  margin: 0;
  color: var(--c-text-sub);
  font-size: 14px;
  line-height: 1.9;
}

/* ============================================================
   Marquee band
   ============================================================ */
.marquee-band {
  overflow: hidden;
  padding: 0;
  background: var(--c-bg-dark);
}
.marquee-band--thin .marquee-track { height: 200px; }
.marquee-track {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  width: max-content;
  animation: marquee 36s linear infinite;
  height: 280px;
}
.marquee-track.reverse { animation-direction: reverse; animation-duration: 42s; }
.marquee-item {
  flex: 0 0 auto;
  width: 440px;
  height: 100%;
  background-size: cover;
  background-position: center;
  border-radius: 10px;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(calc(-50% - 10px)); }
}

/* ============================================================
   Business
   ============================================================ */
.section-business { background: var(--c-bg); }
.biz-list { display: grid; gap: 100px; }
.biz-item { }
.biz-card {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: center;
  cursor: pointer;
}
.biz-item.reverse .biz-card { grid-template-columns: 1fr 1.1fr; }
.biz-item.reverse .biz-img { order: 2; }
.biz-img {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  aspect-ratio: 4 / 3;
}
.biz-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 1.2s var(--easing);
}
.biz-card:hover .biz-img img { transform: scale(1.06); }
.biz-body { padding: 10px 0; }
.biz-num {
  font-family: var(--ff-en);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: .24em;
  color: var(--c-main);
  margin-bottom: 12px;
}
.biz-en {
  font-family: var(--ff-en);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: .2em;
  color: var(--c-text-sub);
  margin-bottom: 8px;
  text-transform: uppercase;
}
.biz-ttl {
  font-size: clamp(24px, 2.6vw, 34px);
  font-weight: 700;
  margin: 0 0 20px;
  letter-spacing: .02em;
}
.biz-soon-badge {
  display: inline-block;
  background: var(--c-accent-amber);
  color: #fff;
  font-size: 11px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 999px;
  vertical-align: middle;
  margin-left: 8px;
  letter-spacing: .06em;
}
.biz-desc {
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 2;
  margin: 0 0 22px;
}
.biz-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}
.biz-tags li {
  font-size: 12px;
  padding: 6px 12px;
  background: rgba(46, 125, 79, .08);
  color: var(--c-main);
  border-radius: 999px;
  font-weight: 500;
}
.biz-more {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--ff-en);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--c-text);
  border-bottom: 1px solid var(--c-text);
  padding-bottom: 4px;
  transition: gap .3s var(--easing), color .3s var(--easing);
}
.biz-card:hover .biz-more { gap: 16px; color: var(--c-main); border-color: var(--c-main); }
.biz-more.is-disabled {
  color: var(--c-text-sub);
  border-color: var(--c-line);
  pointer-events: none;
}
.biz-card.is-soon { cursor: default; }
.biz-card.is-soon:hover .biz-img img { transform: none; }

/* ============================================================
   History timeline
   ============================================================ */
.section-history { background: #fff; }
.timeline {
  position: relative;
  max-width: 780px;
  margin: 0 auto;
  padding-left: 28px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 8px; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-main) 0%, rgba(46, 125, 79, .2) 100%);
}
.timeline-item {
  position: relative;
  padding: 0 0 48px 40px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -6px; top: 6px;
  width: 14px; height: 14px;
  background: var(--c-main);
  border-radius: 50%;
  border: 3px solid var(--c-bg);
  box-shadow: 0 0 0 4px rgba(46, 125, 79, .12);
}
.timeline-year {
  font-family: var(--ff-en);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: .18em;
  color: var(--c-main);
  margin-bottom: 6px;
}
.timeline-body h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 0 0 6px;
}
.timeline-body p {
  margin: 0;
  color: var(--c-text-sub);
  font-size: 14.5px;
  line-height: 1.9;
}

/* ============================================================
   Onomichi section
   ============================================================ */
.section-onomichi {
  padding: 120px 0 0;
  background: var(--c-bg);
}
.onomichi-inner {
  text-align: center;
  margin-bottom: 80px;
}
.onomichi-text p {
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 2;
  max-width: 640px;
  margin: 24px auto 0;
}

/* ============================================================
   News
   ============================================================ */
.section-news { background: #fff; }
.news-list {
  border-top: 1px solid var(--c-line);
  max-width: 860px;
  margin: 0 auto 40px;
}
.news-item {
  display: grid;
  grid-template-columns: 120px 120px 1fr;
  gap: 24px;
  align-items: center;
  padding: 22px 0;
  border-bottom: 1px solid var(--c-line);
}
.news-item time {
  font-family: var(--ff-en);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--c-text-sub);
}
.news-cat {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(46, 125, 79, .1);
  color: var(--c-main);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 500;
  text-align: center;
  letter-spacing: .08em;
}
.news-item a {
  font-size: 15px;
  font-weight: 500;
  transition: color .3s var(--easing);
}
.news-item a:hover { color: var(--c-main); opacity: 1; }
.news-more-wrap { text-align: center; }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border: 1px solid var(--c-text);
  border-radius: 999px;
  font-family: var(--ff-en);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: .12em;
  transition: all .35s var(--easing);
}
.btn-outline:hover {
  background: var(--c-text);
  color: var(--c-white);
  opacity: 1;
}

/* ============================================================
   Company / Executives / Table
   ============================================================ */
.section-company { background: var(--c-bg); }
.exec-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  margin-bottom: 80px;
}
.exec-card {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 200px 1fr;
  align-items: stretch;
}
.exec-img {
  overflow: hidden;
  background: var(--c-bg-dark);
}
.exec-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 5;
}
.exec-body {
  padding: 28px 28px 28px 0;
  padding-left: 28px;
}
.exec-role {
  display: inline-block;
  padding: 4px 12px;
  background: var(--c-main);
  color: #fff;
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: .1em;
  font-weight: 500;
  margin-bottom: 14px;
}
.exec-name {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 14px;
}
.exec-name small {
  font-family: var(--ff-en);
  font-weight: 400;
  font-size: 13px;
  color: var(--c-text-sub);
  letter-spacing: .08em;
  margin-left: 8px;
}
.exec-body p {
  font-size: 13.5px;
  color: var(--c-text-sub);
  line-height: 1.95;
  margin: 0;
}

.company-table-wrap {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.company-table tr { border-bottom: 1px solid var(--c-line); }
.company-table tr:last-child { border-bottom: 0; }
.company-table th,
.company-table td {
  padding: 22px 28px;
  text-align: left;
  vertical-align: top;
  font-size: 15px;
  line-height: 1.8;
}
.company-table th {
  width: 200px;
  background: rgba(46, 125, 79, .04);
  color: var(--c-main);
  font-weight: 600;
  letter-spacing: .06em;
}
.company-table td { color: var(--c-text-sub); }

/* ============================================================
   Access
   ============================================================ */
.section-access { background: #fff; }
.access-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 40px;
  align-items: stretch;
}
.access-map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  min-height: 440px;
  position: relative;
}
.access-map iframe {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  border: 0;
  display: block;
}
.access-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin: 0;
  padding: 20px 0;
}
.access-info div {
  padding-bottom: 20px;
  border-bottom: 1px solid var(--c-line);
}
.access-info div:last-child { border-bottom: 0; }
.access-info dt {
  font-family: var(--ff-en);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--c-main);
  margin-bottom: 8px;
  text-transform: uppercase;
}
.access-info dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
}

/* ============================================================
   Contact form
   ============================================================ */
.section-contact { background: var(--c-bg); }
.contact-form {
  max-width: 820px;
  margin: 0 auto;
  background: var(--c-white);
  padding: 56px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.form-field { margin-bottom: 26px; }
.form-field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
}
.form-field label span {
  display: inline-block;
  background: var(--c-accent-amber);
  color: #fff;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: 6px;
  font-weight: 500;
}
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--c-line);
  border-radius: 8px;
  font-family: var(--ff-ja);
  font-size: 15px;
  background: var(--c-bg);
  transition: border-color .3s var(--easing), background .3s var(--easing);
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: 0;
  border-color: var(--c-main);
  background: #fff;
}
.form-field textarea { resize: vertical; min-height: 140px; }
.form-privacy {
  text-align: center;
  margin-bottom: 28px;
  font-size: 14px;
}
.form-privacy input { margin-right: 8px; accent-color: var(--c-main); }
.form-privacy a { color: var(--c-main); text-decoration: underline; }

.btn-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 18px;
  background: var(--c-main);
  color: #fff;
  border-radius: 999px;
  font-family: var(--ff-ja);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: .06em;
  transition: background .35s var(--easing), transform .35s var(--easing);
}
.btn-submit:hover {
  background: var(--c-main-dark);
  transform: translateY(-2px);
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--c-bg-dark);
  color: rgba(255, 255, 255, .7);
  padding: 80px 0 32px;
  position: relative;
  overflow: hidden;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-main), var(--c-accent-sun), var(--c-accent-amber));
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1.3fr;
  gap: 60px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
  margin-bottom: 28px;
}
.footer-logo { height: 36px; width: auto; margin-bottom: 22px; filter: brightness(0) invert(1); }
.footer-catch {
  font-size: 19px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 12px;
  line-height: 1.6;
}
.footer-desc {
  font-size: 13.5px;
  line-height: 1.9;
  margin: 0;
}
.footer-col h4 {
  font-family: var(--ff-en);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: .2em;
  color: var(--c-accent-sun);
  margin: 0 0 24px;
  text-transform: uppercase;
}
.footer-col ul li { margin-bottom: 14px; font-size: 14px; }
.footer-col ul li a { color: rgba(255, 255, 255, .75); }
.footer-col ul li a:hover { color: #fff; opacity: 1; }
.footer-contact-list li { line-height: 1.7; font-size: 13.5px; }
.footer-sns {
  display: flex;
  gap: 14px;
  margin-top: 24px;
}
.footer-sns a {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255, 255, 255, .08);
  border-radius: 50%;
  color: #fff;
  transition: background .3s var(--easing), transform .3s var(--easing);
}
.footer-sns a:hover {
  background: var(--c-main);
  transform: translateY(-2px);
  opacity: 1;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  letter-spacing: .06em;
}
.footer-bottom p { margin: 0; }
.footer-bottom a { color: rgba(255, 255, 255, .6); }
.footer-bottom a:hover { color: #fff; opacity: 1; }

/* ============================================================
   Scroll-in animations
   ============================================================ */
.js-inView {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .9s var(--easing), transform .9s var(--easing);
}
.js-inView.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 960px) {
  .section { padding: 90px 0; }
  .section-head { margin-bottom: 44px; }

  .header-inner { padding: 14px 20px; gap: 14px; }
  .header-nav, .header-cta { display: none; }
  .header-burger { display: block; }

  .hero { min-height: 560px; }
  .hero-content { padding: 0 6vw; }

  .philosophy-grid { grid-template-columns: 1fr; gap: 20px; }
  .philo-card { padding: 32px 26px; }

  .biz-card,
  .biz-item.reverse .biz-card {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .biz-item.reverse .biz-img { order: 0; }
  .biz-list { gap: 70px; }

  .marquee-track { height: 200px; }
  .marquee-item { width: 300px; }

  .exec-grid { grid-template-columns: 1fr; }
  .exec-card { grid-template-columns: 140px 1fr; }
  .exec-body { padding: 22px 22px 22px 22px; }
  .company-table th { width: 120px; padding: 16px 18px; }
  .company-table td { padding: 16px 18px; }

  .access-grid { grid-template-columns: 1fr; }

  .contact-form { padding: 36px 24px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }

  .news-item {
    grid-template-columns: 90px 90px 1fr;
    gap: 14px;
    padding: 16px 0;
  }
  .news-item time { font-size: 12px; }
  .news-cat { font-size: 10px; }
  .news-item a { font-size: 13.5px; grid-column: 1 / -1; }

  .footer-inner { grid-template-columns: 1fr; gap: 40px; }
  .footer-bottom { flex-direction: column; gap: 10px; }
}

@media (max-width: 560px) {
  .section { padding: 70px 0; }
  .container { padding-left: 20px; padding-right: 20px; }

  .hero-title { font-size: 36px; }
  .hero-lead { font-size: 14px; }

  .philosophy-catch { font-size: 20px; }

  .biz-tags li { font-size: 11px; padding: 5px 10px; }
  .biz-ttl { font-size: 22px; }

  .exec-card { grid-template-columns: 1fr; }
  .exec-img { aspect-ratio: 16 / 10; }
  .exec-body { padding: 24px; }
}

/* ============================================================
   Page hero (sub-pages)
   ============================================================ */
.page-hero {
  position: relative;
  height: 46vh;
  min-height: 320px;
  background: var(--c-bg-dark);
  color: var(--c-white);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: var(--page-hero-image, url('../images/energy-bg.jpg'));
  background-size: cover;
  background-position: center;
  opacity: .5;
  filter: saturate(.85) brightness(.8);
}
.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 26, 18, .4) 0%, rgba(15, 26, 18, .75) 100%);
}
.page-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
}
.page-hero-en {
  display: block;
  font-family: var(--ff-en);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--c-accent-sun);
  margin-bottom: 18px;
}
.page-hero-ja {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  letter-spacing: .04em;
  margin: 0;
}

.breadcrumb {
  padding: 20px 0;
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-line);
}
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  color: var(--c-text-sub);
  font-family: var(--ff-en);
  letter-spacing: .06em;
}
.breadcrumb li + li::before {
  content: '/';
  margin-right: 8px;
  color: var(--c-line);
}

/* ============================================================
   About page – CEO message
   ============================================================ */
.section-message {
  background: var(--c-bg);
  padding-top: 100px;
  padding-bottom: 100px;
}
.message-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  max-width: 1040px;
  margin: 0 auto;
}
.message-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 4 / 5;
}
.message-img img { width: 100%; height: 100%; object-fit: cover; }
.message-body .section-en { margin-bottom: 18px; }
.message-title {
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 700;
  margin: 0 0 24px;
  line-height: 1.6;
}
.message-body p {
  color: var(--c-text-sub);
  font-size: 14.5px;
  line-height: 2;
  margin: 0 0 16px;
}
.message-sign {
  margin-top: 28px;
  font-family: var(--ff-en);
  font-size: 14px;
  letter-spacing: .08em;
  color: var(--c-text);
}
.message-sign strong {
  font-family: var(--ff-ja);
  font-size: 18px;
  font-weight: 700;
  margin-left: 10px;
}

/* ============================================================
   News page — unified feed
   ============================================================ */
.feed-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 50px;
  flex-wrap: wrap;
}
.feed-tab {
  padding: 10px 24px;
  background: transparent;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  font-family: var(--ff-en);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--c-text-sub);
  transition: all .3s var(--easing);
}
.feed-tab:hover { color: var(--c-main); border-color: var(--c-main); }
.feed-tab.is-active {
  background: var(--c-main);
  color: #fff;
  border-color: var(--c-main);
}

.feed-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feed-card {
  background: var(--c-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform .4s var(--easing), box-shadow .4s var(--easing);
}
.feed-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(15, 26, 18, .12);
}
.feed-card-img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--c-bg);
  position: relative;
}
.feed-card-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .8s var(--easing);
}
.feed-card:hover .feed-card-img img { transform: scale(1.06); }
.feed-card-source {
  position: absolute;
  top: 12px; left: 12px;
  padding: 4px 10px;
  background: rgba(15, 26, 18, .8);
  color: #fff;
  border-radius: 999px;
  font-size: 10px;
  letter-spacing: .1em;
  font-family: var(--ff-en);
  font-weight: 500;
  z-index: 2;
}
.feed-card-source.src-blog { background: var(--c-main); }
.feed-card-source.src-ig { background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888); }
.feed-card-body {
  padding: 20px 22px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.feed-card-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 10px;
}
.feed-card-meta time {
  font-family: var(--ff-en);
  font-size: 12px;
  color: var(--c-text-sub);
  letter-spacing: .06em;
}
.feed-card-meta .feed-cat {
  font-size: 10px;
  padding: 2px 8px;
  background: rgba(46, 125, 79, .1);
  color: var(--c-main);
  border-radius: 4px;
  font-weight: 500;
  letter-spacing: .06em;
}
.feed-card-ttl {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
  margin: 0 0 10px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.feed-card-excerpt {
  font-size: 13px;
  color: var(--c-text-sub);
  line-height: 1.7;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.feed-card[hidden] { display: none; }

/* ============================================================
   Privacy / plain content
   ============================================================ */
.plain-content {
  max-width: 820px;
  margin: 0 auto;
  font-size: 15px;
  line-height: 2;
  color: var(--c-text-sub);
}
.plain-content h3 {
  font-size: 19px;
  color: var(--c-text);
  margin: 40px 0 12px;
  padding-left: 14px;
  border-left: 3px solid var(--c-main);
}
.plain-content h3:first-child { margin-top: 0; }
.plain-content p { margin: 0 0 16px; }
.plain-content ul { padding-left: 22px; margin: 0 0 16px; list-style: disc; }
.plain-content ul li { margin-bottom: 6px; }

/* ============================================================
   Contact page layout
   ============================================================ */
.contact-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: start;
  max-width: 1040px;
  margin: 0 auto;
}
.contact-side {
  background: var(--c-bg-dark);
  color: #fff;
  padding: 44px 36px;
  border-radius: var(--radius-lg);
}
.contact-side h3 {
  font-family: var(--ff-en);
  font-size: 13px;
  letter-spacing: .2em;
  color: var(--c-accent-sun);
  margin: 0 0 20px;
}
.contact-side .ja {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 24px;
  color: #fff;
}
.contact-side p {
  font-size: 13.5px;
  line-height: 1.9;
  color: rgba(255, 255, 255, .75);
  margin: 0 0 24px;
}
.contact-side-list li {
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
  font-size: 13.5px;
}
.contact-side-list li small {
  display: block;
  font-family: var(--ff-en);
  font-size: 10px;
  letter-spacing: .18em;
  opacity: .55;
  margin-bottom: 4px;
}
.contact-side-list a { color: #fff; }

@media (max-width: 960px) {
  .message-grid { grid-template-columns: 1fr; gap: 36px; }
  .message-img { max-width: 320px; margin: 0 auto; }
  .feed-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .contact-layout { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 560px) {
  .feed-grid { grid-template-columns: 1fr; }
  .page-hero { min-height: 260px; height: 38vh; }
}

/* reduce motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
  .marquee-track { animation: none; }
  .js-inView { opacity: 1; transform: none; }
}