/**
 * SOTSULOG Home — 教育×DX×地域活性
 * Design ref: Linear / Stripe / Notion（白・#036EB8・大余白）
 */

:root {
  --sot-accent: #036eb8;
  --sot-accent-soft: rgba(3, 110, 184, 0.08);
  --sot-accent-mid: rgba(3, 110, 184, 0.18);
  --sot-teal: #0d9488;
  --sot-bg: #ffffff;
  --sot-bg-subtle: #f8fafc;
  --sot-bg-elevated: #ffffff;
  --sot-text: #0b1220;
  --sot-text-secondary: #475569;
  --sot-muted: #94a3b8;
  --sot-border: rgba(3, 110, 184, 0.1);
  --sot-border-strong: rgba(3, 110, 184, 0.22);
  --sot-radius: 16px;
  --sot-radius-lg: 24px;
  --sot-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 12px 40px rgba(3, 110, 184, 0.06);
  --sot-font-display: "Inter", "Noto Sans JP", system-ui, sans-serif;
  --sot-font-body: "Noto Sans JP", system-ui, sans-serif;
  --sot-font-mono: "Inter", ui-monospace, monospace;
  --sot-container: min(1120px, calc(100% - 48px));
  --sot-section: clamp(96px, 14vw, 160px);
}

body.sot-home {
  background-color: #fafcff;
  color: var(--sot-text);
  font-family: var(--sot-font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

body.sot-home.appear {
  background-color: #fafcff;
}

/* 全体 IT 背景 — 多層レイヤー（主張控えめ） */
body.sot-home.theme-tech.appear::before,
body.sot-home.theme-tech.appear::after {
  display: none;
}

body.sot-home .tech-bg-sparks {
  display: none;
}

body.sot-home .sot-it-layer--canvas {
  display: none !important;
}

body.sot-home .tech-bg-sparks span {
  width: 5px;
  height: 5px;
  box-shadow: 0 0 12px rgba(3, 110, 184, 0.55);
}

body.sot-home .tech-bg-sparks span:nth-child(1) { animation-duration: 9s; }
body.sot-home .tech-bg-sparks span:nth-child(2) { animation-duration: 11s; animation-delay: 2s; }
body.sot-home .tech-bg-sparks span:nth-child(3) { animation-duration: 10s; animation-delay: 1s; }
body.sot-home .tech-bg-sparks span:nth-child(4) { animation-duration: 12s; animation-delay: 3s; }

body.sot-home .tech-bg-sparks span:nth-child(5) {
  top: 72%;
  right: 0;
  background: #26b7b7;
  animation: tech-spark-c 8s linear 1.5s infinite;
}

body.sot-home .tech-bg-sparks span:nth-child(6) {
  top: 12%;
  left: 0;
  animation: tech-spark-b 10s linear 0.5s infinite;
}

.sot-it-layers {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  opacity: 0;
  transition: opacity 0.5s ease;
}

body.sot-home.appear .sot-it-layers {
  opacity: 1;
}

body.sot-home:not(.appear) .tech-bg-sparks {
  opacity: 0;
}

.sot-it-layer {
  position: absolute;
  inset: -20%;
  will-change: transform;
}

/* レイヤー1: 細グリッド（控えめ・流線と重ねない） */
.sot-it-layer--grid-fine {
  background-image:
    linear-gradient(to right, rgba(3, 110, 184, 0.028) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(3, 110, 184, 0.028) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.5;
}

body.sot-home .sot-it-layer--grid-fine,
body.sot-home .sot-it-layer--grid-major,
body.sot-home .sot-it-layer--diagonal {
  animation: none;
}

/* レイヤー2: 粗グリッド（控えめ） */
.sot-it-layer--grid-major {
  background-image:
    linear-gradient(to right, rgba(3, 110, 184, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(3, 110, 184, 0.04) 1px, transparent 1px);
  background-size: 120px 120px, 120px 120px;
  opacity: 0.35;
}

/* レイヤー3: 斜めライン（ほぼ非表示） */
.sot-it-layer--diagonal {
  background-image:
    repeating-linear-gradient(
      128deg,
      transparent 0,
      transparent 160px,
      rgba(3, 110, 184, 0.025) 160px,
      rgba(3, 110, 184, 0.025) 161px
    );
  background-size: 240px 240px;
  opacity: 0.3;
}

/* レイヤー4: ソフトメッシュ */
.sot-it-layer--mesh {
  inset: -20%;
  background:
    radial-gradient(ellipse 50% 42% at 12% 22%, rgba(3, 110, 184, 0.14), transparent 58%),
    radial-gradient(ellipse 44% 38% at 88% 68%, rgba(13, 148, 136, 0.11), transparent 52%),
    radial-gradient(ellipse 38% 32% at 52% 92%, rgba(3, 110, 184, 0.1), transparent 55%);
  opacity: 1;
}

/* レイヤー5: 浮遊オーブ */
.sot-it-layer--orbs span {
  position: absolute;
  border-radius: 50%;
  filter: blur(56px);
}

.sot-it-layer--orbs span:nth-child(1) {
  width: 420px;
  height: 420px;
  top: 6%;
  left: -8%;
  background: rgba(3, 110, 184, 0.16);
  animation: sot-it-orb-a 18s ease-in-out infinite;
}

.sot-it-layer--orbs span:nth-child(2) {
  width: 360px;
  height: 360px;
  top: 48%;
  right: -10%;
  background: rgba(13, 148, 136, 0.13);
  animation: sot-it-orb-b 14s ease-in-out infinite;
}

.sot-it-layer--orbs span:nth-child(3) {
  width: 280px;
  height: 280px;
  bottom: 8%;
  left: 22%;
  background: rgba(3, 110, 184, 0.12);
  animation: sot-it-orb-c 12s ease-in-out infinite;
}

.sot-it-layer--orbs span:nth-child(4) {
  width: 240px;
  height: 240px;
  top: 24%;
  right: 18%;
  background: rgba(3, 110, 184, 0.1);
  animation: sot-it-orb-d 20s ease-in-out infinite;
}

/* レイヤー6: Canvas ノード */
.sot-it-layer--canvas {
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 1;
}

@keyframes sot-it-drift-a {
  to { background-position: 40px 40px; }
}

@keyframes sot-it-drift-b {
  to { background-position: -120px 120px, -120px 120px; }
}

@keyframes sot-it-drift-c {
  to { background-position: 240px 240px; }
}

@keyframes sot-it-mesh-breathe {
  0%, 100% {
    transform: scale(1) translate(0, 0);
    opacity: 0.85;
  }
  50% {
    transform: scale(1.1) translate(2%, -1.5%);
    opacity: 1;
  }
}

@keyframes sot-it-orb-a {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(56px, 40px); }
}

@keyframes sot-it-orb-b {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-48px, -36px); }
}

@keyframes sot-it-orb-c {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(32px, -24px) scale(1.12); }
}

@keyframes sot-it-orb-d {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-28px, 36px); }
}

body.sot-home .wrap {
  opacity: 1;
  overflow: visible;
  position: relative;
  z-index: 1;
}

html:has(body.sot-home) {
  overflow-x: clip;
}

body.sot-home.appear .wrap {
  opacity: 1 !important;
  animation: none !important;
}

body.sot-home #main_visual.hero-home {
  height: auto;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  border-radius: 0;
}

body.sot-home #main_visual,
body.sot-home .home-main {
  font-feature-settings: "palt" 1;
}

body.sot-home #index {
  position: absolute;
  width: 100%;
  top: 0;
  z-index: 100;
}

body.sot-home #index .logo img {
  filter: none;
}

body.sot-home .openbtn1 {
  background: var(--sot-accent);
}

body.sot-home main.home-main {
  margin-top: 0;
  background: transparent;
}

.sot-container {
  width: var(--sot-container);
  margin-inline: auto;
}

.sot-container--wide {
  width: min(1180px, calc(100% - 40px));
}

.sot-eyebrow {
  font-family: var(--sot-font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--sot-accent);
}

.sot-section {
  padding-block: var(--sot-section);
  position: relative;
}

.sot-section--subtle {
  background: rgba(248, 250, 252, 0.42);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-block: 1px solid var(--sot-border);
}

.sot-section__head {
  max-width: 640px;
  margin-bottom: clamp(48px, 8vw, 80px);
}

.sot-section__title {
  font-family: var(--sot-font-display);
  font-size: clamp(1.75rem, 1.2rem + 2vw, 2.75rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--sot-text);
  margin-top: 16px;
}

.sot-section__desc {
  margin-top: 20px;
  font-size: 0.9375rem;
  line-height: 2;
  color: var(--sot-text-secondary);
}

/* —— Splash（トップ） —— */
body.sot-home #splash.splash-home {
  background: linear-gradient(135deg, #025a96 0%, #036eb8 45%, #0488cc 100%);
  overflow: hidden;
}

body.sot-home #splash-logo.splash-home__content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(92vw, 640px);
  text-align: center;
}

.splash-home__streaks {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.splash-home__streaks span {
  position: absolute;
  top: var(--y, 50%);
  left: -45%;
  width: var(--w, 40%);
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.08) 25%,
    rgba(255, 255, 255, 0.55) 60%,
    rgba(148, 210, 255, 0.75) 80%,
    transparent 100%
  );
  animation: splash-streak var(--dur, 2.5s) linear infinite;
  animation-delay: var(--delay, 0s);
}

@keyframes splash-streak {
  0% {
    transform: translateX(0) scaleX(0.5);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  100% {
    transform: translateX(190vw) scaleX(1);
    opacity: 0;
  }
}

.splash-home__line {
  margin: 0;
  overflow: hidden;
  line-height: 1.15;
}

.splash-home__line span {
  display: inline-block;
  font-family: var(--sot-font-display);
  font-size: clamp(2rem, 1.2rem + 5vw, 4.5rem);
  font-weight: 800;
  letter-spacing: 0.06em;
  color: #fff;
  opacity: 0;
  transform: translateX(-80px);
  animation: splash-word-rush 0.75s cubic-bezier(0.08, 1, 0.28, 1) forwards;
}

.splash-home__line--1 span { animation-delay: 0.12s; }
.splash-home__line--2 span { animation-delay: 0.32s; }
.splash-home__line--3 span { animation-delay: 0.52s; }

@keyframes splash-word-rush {
  0% {
    opacity: 0;
    transform: translateX(-80px);
    clip-path: inset(0 100% 0 0);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
    clip-path: inset(0 0 0 0);
  }
}

.splash-home__rush {
  display: block;
  position: relative;
  height: 1px;
  width: 0;
  margin: clamp(20px, 4vh, 32px) auto 0;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.22);
  animation: splash-rush-grow 0.7s cubic-bezier(0.08, 1, 0.22, 1) 0.72s forwards;
}

.splash-home__rush i {
  position: absolute;
  top: 0;
  left: -35%;
  width: 35%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.5) 40%,
    rgba(255, 255, 255, 1) 55%,
    rgba(255, 255, 255, 0.5) 75%,
    transparent 100%
  );
  animation: splash-rush-flow 1.8s linear 1.05s infinite;
}

@keyframes splash-rush-grow {
  to {
    width: min(320px, 72%);
    opacity: 1;
  }
}

@keyframes splash-rush-flow {
  0% {
    left: -35%;
    opacity: 0;
  }
  15% {
    opacity: 1;
  }
  85% {
    opacity: 1;
  }
  100% {
    left: 100%;
    opacity: 0;
  }
}

body.sot-home #splash.splash-home.splash-home--exit .splash-home__streaks {
  opacity: 0;
  animation: none !important;
}

body.sot-home #splash.splash-home.splash-home--exit {
  animation: splash-home-fade-out 0.65s cubic-bezier(0.12, 1, 0.28, 1) forwards;
}

body.sot-home #splash.splash-home.splash-home--exit .splash-home__content {
  animation: splash-home-content-out 0.4s ease forwards;
}

@keyframes splash-home-fade-out {
  to {
    opacity: 0;
    visibility: hidden;
  }
}

@keyframes splash-home-slide-out {
  to {
    transform: translateX(100%);
  }
}

@keyframes splash-home-content-out {
  to {
    opacity: 0;
    transform: translate(-50%, -58%);
  }
}

/* トップ：旧テーマの青ワイプ遷移は使わない（二重遷移防止） */
body.sot-home.appear .splashbg1,
body.sot-home.appear .splashbg2 {
  display: none !important;
  animation: none !important;
}

/* —— Hero —— */
.hero-home {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
  background: linear-gradient(180deg, #fafcff 0%, #ffffff 55%, #f8fbff 100%);
}

.hero-home__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero-home__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.hero-home--ready .hero-home__canvas {
  opacity: 0.55;
}

.hero-home__inner {
  min-width: 0;
  position: relative;
}

.hero-home .hero-home__eyebrow,
.hero-home .hero-home__title {
  opacity: 0;
  transform: translateX(-56px);
}

.hero-home--ready .hero-home__eyebrow {
  animation: hero-rush-in 0.7s cubic-bezier(0.12, 1, 0.28, 1) forwards;
}

.hero-home--ready .hero-home__title {
  animation: hero-title-rush 0.85s cubic-bezier(0.1, 1, 0.25, 1) 0.08s forwards;
}

.hero-home__headline {
  display: inline-block;
  max-width: 100%;
}

.hero-home__rush-bar {
  display: block;
  position: relative;
  height: 1px;
  margin-top: clamp(12px, 2vh, 18px);
  width: 0;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(3, 110, 184, 0.12);
  opacity: 0;
}

.hero-home__rush-bar i {
  position: absolute;
  top: 0;
  left: -35%;
  width: 35%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(3, 110, 184, 0.55) 35%,
    rgba(94, 184, 255, 0.95) 55%,
    rgba(3, 110, 184, 0.55) 75%,
    transparent 100%
  );
  opacity: 0;
}

.hero-home--ready .hero-home__rush-bar {
  animation: hero-rush-bar-draw 0.85s cubic-bezier(0.08, 1, 0.22, 1) 0.45s forwards;
}

.hero-home--ready .hero-home__rush-bar i {
  animation: hero-rush-bar-flow 2.2s linear 1.15s infinite;
}

@keyframes hero-rush-in {
  0% {
    opacity: 0;
    transform: translateX(-56px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes hero-title-rush {
  0% {
    opacity: 0;
    transform: translateX(-96px);
    clip-path: inset(0 100% 0 0);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
    clip-path: inset(0 0 0 0);
  }
}

@keyframes hero-rush-bar-draw {
  0% {
    opacity: 0;
    width: 0;
  }
  20% {
    opacity: 1;
  }
  100% {
    opacity: 1;
    width: 100%;
  }
}

@keyframes hero-rush-bar-flow {
  0% {
    left: -35%;
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    left: 100%;
    opacity: 0;
  }
}

.hero-home__eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(3, 110, 184, 0.2);
  background: rgba(255, 255, 255, 0.9);
  font-family: var(--sot-font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--sot-accent);
  margin-bottom: clamp(20px, 3vh, 28px);
}

.hero-home__title {
  font-family: var(--sot-font-display);
  font-size: clamp(2.75rem, 1.4rem + 6.5vw, 6rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: var(--sot-text);
  margin: 0;
  white-space: nowrap;
}

.hero-home__title-accent {
  color: var(--sot-accent);
}

.hero-home__layout {
  position: relative;
  z-index: 2;
  width: min(960px, calc(100% - 48px));
  margin-left: clamp(24px, 5vw, 72px);
  margin-right: auto;
  padding: 0;
}

@media (max-width: 767px) {
  .hero-home__title {
    font-size: clamp(1.875rem, 5.5vw, 2.5rem);
    white-space: normal;
  }
}

@media (max-width: 991px) {
  .hero-home__layout {
    width: min(640px, calc(100% - 40px));
    margin-left: clamp(20px, 4vw, 32px);
  }
}

.sot-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-family: var(--sot-font-display);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: 999px;
  text-decoration: none !important;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.sot-btn--primary {
  position: relative;
  overflow: hidden;
  background: var(--sot-accent);
  color: #fff !important;
  box-shadow: 0 4px 20px rgba(3, 110, 184, 0.28);
}

.sot-btn--primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 40%, rgba(255, 255, 255, 0.25) 50%, transparent 60%);
  transform: translateX(-120%);
  animation: sot-btn-shine 4s ease-in-out infinite;
}

@keyframes sot-btn-shine {
  0%, 70%, 100% { transform: translateX(-120%); }
  85% { transform: translateX(120%); }
}

.sot-btn--primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 10px 36px rgba(3, 110, 184, 0.4);
}

.sot-btn--ghost {
  border: 1px solid var(--sot-border-strong);
  color: var(--sot-text) !important;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(8px);
}

.sot-btn--ghost:hover {
  border-color: var(--sot-accent);
  color: var(--sot-accent) !important;
}

.hero-home__scroll {
  position: absolute;
  left: 50%;
  bottom: 32px;
  z-index: 2;
  transform: translateX(-50%);
  font-family: var(--sot-font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--sot-muted);
  text-decoration: none;
  padding-bottom: 24px;
}

.hero-home__scroll::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 1px;
  height: 18px;
  background: var(--sot-accent);
  transform: translateX(-50%);
  animation: sot-scroll-pulse 1.4s ease-in-out infinite;
}

@keyframes sot-scroll-pulse {
  0%, 100% { opacity: 0.4; transform: translateX(-50%) scaleY(0.6); }
  50% { opacity: 1; transform: translateX(-50%) scaleY(1); }
}

/* —— Mission + What we do（横並び） —— */
.sot-section--mission-eco {
  background: rgba(248, 250, 252, 0.38);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-block: 1px solid var(--sot-border);
  padding-bottom: clamp(80px, 12vw, 120px);
}

.sot-mission-eco {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.32fr);
  gap: clamp(24px, 3vw, 56px);
  align-items: center;
}

.sot-mission-eco__copy .sot-section__head {
  margin-bottom: clamp(24px, 4vw, 32px);
}

.sot-mission-eco__copy .sot-mission {
  max-width: none;
}

.sot-mission-eco__visual .eco-network {
  max-width: none;
  width: 100%;
}

@media (min-width: 992px) {
  .sot-mission-eco__visual .eco-network {
    width: 118%;
    margin-inline: -9% 0;
  }
}

@media (max-width: 991px) {
  .sot-mission-eco {
    grid-template-columns: 1fr;
    gap: clamp(40px, 6vw, 56px);
  }

  .sot-mission-eco__visual {
    max-width: min(100%, 640px);
    margin-inline: auto;
  }
}

/* —— What we do（事業ネットワーク） —— */
.sot-section--eco {
  padding-bottom: clamp(80px, 12vw, 120px);
}

.sot-section__head--center {
  text-align: center;
  max-width: 40rem;
  margin-inline: auto;
  margin-bottom: clamp(40px, 6vw, 56px);
}

.sot-section__head--center .sot-eyebrow {
  justify-content: center;
}

.eco-layout--solo {
  max-width: min(100%, 860px);
  margin-inline: auto;
}

.eco-layout__more {
  text-align: center;
  margin: clamp(32px, 5vw, 48px) 0 0;
}

/* —— 事業ネットワーク図 —— */
.eco-network {
  position: relative;
  width: 100%;
  max-width: min(100%, 820px);
  margin-inline: auto;
}

.eco-network__svg {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 1;
}

.eco-network__line {
  fill: none;
  stroke: var(--sot-border-strong);
  stroke-width: 1;
  stroke-dasharray: 4 6;
}

.eco-network__line--active {
  stroke: var(--sot-accent);
  stroke-width: 2;
  stroke-dasharray: 80 420;
  opacity: 0.6;
  animation: eco-line-flow 5s linear infinite;
}

.eco-network__line--ring {
  animation: eco-line-flow 8s linear infinite reverse;
}

.eco-network__orbit {
  stroke: rgba(3, 110, 184, 0.12);
  stroke-width: 1;
  stroke-dasharray: 6 14;
}

.eco-network__orbit-ring {
  transform-origin: 350px 350px;
  animation: eco-orbit-spin 48s linear infinite;
}

@keyframes eco-orbit-spin {
  to { transform: rotate(360deg); }
}

.eco-network__packet {
  fill: var(--sot-accent);
}

.eco-network__packet--back {
  fill: var(--sot-teal);
}

@keyframes eco-line-flow {
  to { stroke-dashoffset: -500; }
}

.eco-network__hub-pulse {
  stroke: rgba(3, 110, 184, 0.35);
  stroke-width: 2;
  opacity: 0;
}

.eco-network--live .eco-network__hub-pulse {
  animation: eco-hub-ring 2.8s ease-out infinite;
}

@keyframes eco-hub-ring {
  0% {
    r: 76;
    opacity: 0.7;
    stroke-width: 2;
  }
  100% {
    r: 110;
    opacity: 0;
    stroke-width: 0.5;
  }
}

.eco-network--live .eco-network__hub {
  animation: none;
}

.eco-network__hub-bg {
  fill: #ffffff;
}

.eco-network__hub {
  fill: var(--sot-accent);
  opacity: 1;
}

.eco-network__hub-text {
  fill: #fff;
  font-family: var(--sot-font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.eco-network__hub-sub {
  fill: rgba(255, 255, 255, 0.88);
  font-family: var(--sot-font-body);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.eco-network__node-fill {
  fill: #fff;
  stroke: none;
}

.eco-network__node-ring {
  fill: none;
  stroke: var(--sot-accent);
  stroke-width: 2.5;
}

.eco-network__node-body {
  pointer-events: none;
}

.eco-network__node-label {
  fill: var(--sot-text);
  font-family: var(--sot-font-display);
  font-size: 16px;
  font-weight: 700;
}

.eco-network__node-sub {
  fill: var(--sot-text-secondary);
  font-family: var(--sot-font-body);
  font-size: 10px;
  letter-spacing: 0.02em;
}

.eco-network__hub-icon,
.eco-network__node-icon {
  color: #ffffff;
  pointer-events: none;
}

.eco-network__node-icon {
  color: var(--sot-accent);
}

.eco-network--live .eco-network__node-icon {
  animation: eco-icon-pulse 4.5s ease-in-out infinite;
  animation-delay: var(--node-delay, 0s);
}

@keyframes eco-icon-pulse {
  0%, 100% { opacity: 0.88; }
  50% { opacity: 1; }
}

.eco-network__node {
  opacity: 0;
  transition: opacity 0.6s ease;
}

.eco-network.is-revealed .eco-network__node {
  opacity: 1;
}

.eco-network.is-revealed .eco-network__node {
  transition-delay: var(--node-delay, 0s);
}

.eco-network--live .eco-network__node-ring {
  animation: eco-node-float 4.5s ease-in-out infinite;
  animation-delay: var(--node-delay, 0s);
  transform-origin: center;
  transform-box: fill-box;
}

@keyframes eco-node-float {
  0%, 100% { stroke-width: 2; filter: drop-shadow(0 0 0 transparent); }
  50% {
    stroke-width: 2.5;
    filter: drop-shadow(0 0 8px rgba(3, 110, 184, 0.25));
  }
}

/* —— Products（スクロール展開） —— */
.screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.sot-prod-scroll {
  --sot-prod-bg: var(--sot-accent);
  --sot-prod-bg-deep: #025a96;
  --sot-prod-bg-light: #0488cc;
  background: transparent;
  overflow: visible;
  scroll-margin-top: 80px;
}

/* 高さは JS で 100vh + スクロール距離に設定（下の空白を防ぐ） */
.sot-prod-scroll__spacer {
  height: calc(100vh + 175vh);
  height: calc(100dvh + 175dvh);
}

.sot-prod-scroll__sticky {
  position: sticky;
  top: 0;
  z-index: 90;
  width: 100%;
  height: 100vh;
  height: 100dvh;
}

body.admin-bar .sot-prod-scroll__sticky {
  top: 32px;
  height: calc(100vh - 32px);
  height: calc(100dvh - 32px);
}

@media screen and (max-width: 782px) {
  body.admin-bar .sot-prod-scroll__sticky {
    top: 46px;
    height: calc(100vh - 46px);
    height: calc(100dvh - 46px);
  }
}

.sot-prod-scroll__frame {
  --pill-p: 0;
  --panel-p: 0;
  --pill-w: 240px;
  --pill-h: 88px;
  --pill-r: 44px;
  --pill-boost: 0;
  position: relative;
  width: 100%;
  height: 100%;
  background: #ffffff;
  overflow: hidden;
  transform: scale(calc(1 + var(--pill-boost) * 0.018));
  transform-origin: center center;
  will-change: transform;
}

/* 中央の角丸から広がる青背景 */
.sot-prod-scroll__circle-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    145deg,
    var(--sot-prod-bg-light) 0%,
    var(--sot-prod-bg) 48%,
    var(--sot-prod-bg-deep) 100%
  );
  clip-path: inset(
    calc(50% - var(--pill-h) / 2)
    calc(50% - var(--pill-w) / 2)
    round var(--pill-r)
  );
  -webkit-clip-path: inset(
    calc(50% - var(--pill-h) / 2)
    calc(50% - var(--pill-w) / 2)
    round var(--pill-r)
  );
  filter: brightness(calc(1 + var(--pill-p) * 0.12)) saturate(calc(1 + var(--pill-p) * 0.2));
  will-change: clip-path, filter;
}

/* 開始画面：タイトルは上、ラベルは角丸の中央 */
.sot-prod-scroll__pill-start {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: calc(1 - var(--pill-p) * 1.15);
}

.sot-prod-scroll__start-copy {
  position: absolute;
  top: clamp(72px, 11vh, 112px);
  left: 50%;
  transform: translateX(-50%);
  width: min(100% - 48px, 28em);
  text-align: center;
}

.sot-prod-scroll__pill-label {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  margin: 0;
  font-family: var(--sot-font-display);
  font-size: clamp(1.125rem, 2.2vw, 1.75rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #ffffff;
  text-shadow: 0 1px 24px rgba(0, 0, 0, 0.35);
  white-space: nowrap;
}

.sot-prod-scroll__start-copy .sot-eyebrow {
  justify-content: center;
}

.sot-prod-scroll__start-title {
  font-family: var(--sot-font-display);
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--sot-text-secondary);
  margin: 8px 0 0;
}

.sot-prod-scroll__split {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex;
  opacity: var(--panel-p);
  pointer-events: none;
}

.sot-prod-scroll__panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(28px, 5vw, 56px);
  min-width: 0;
  transform: translateY(calc((1 - var(--panel-p)) * 40px));
}

.sot-prod-scroll__panel--left {
  background: var(--sot-prod-bg-deep);
}

.sot-prod-scroll__panel--right {
  background: var(--sot-prod-bg-light);
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.sot-prod-scroll__visual {
  position: relative;
  flex: 1;
  min-height: clamp(120px, 28vh, 240px);
  margin-bottom: clamp(20px, 4vw, 40px);
}

.sot-prod-scroll__visual--edu .sot-prod-scroll__shape--phone {
  position: absolute;
  left: 8%;
  bottom: 10%;
  width: 28%;
  aspect-ratio: 9 / 18;
  border-radius: 18px;
  border: 2px solid rgba(3, 110, 184, 0.5);
  background: linear-gradient(160deg, rgba(3, 110, 184, 0.25), transparent);
  transform: rotate(-8deg);
}

.sot-prod-scroll__visual--edu .sot-prod-scroll__shape--card {
  position: absolute;
  right: 12%;
  bottom: 0;
  width: 42%;
  aspect-ratio: 4 / 3;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.sot-prod-scroll__visual--edu .sot-prod-scroll__shape--dot {
  position: absolute;
  left: 42%;
  top: 18%;
  width: 14%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--sot-accent);
  opacity: 0.85;
}

.sot-prod-scroll__visual--dx .sot-prod-scroll__shape--screen {
  position: absolute;
  inset: 8% 10% 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  font-family: var(--sot-font-display);
  font-size: clamp(1.25rem, 2.5vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.92);
}

.sot-prod-scroll__eyebrow {
  font-family: var(--sot-font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
  margin: 0 0 8px;
}

.sot-prod-scroll__title {
  margin: 0 0 4px;
  font-family: var(--sot-font-display);
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.sot-prod-scroll__title a {
  color: #fff;
  text-decoration: none;
}

.sot-prod-scroll__title a:hover {
  color: #7ec8f7;
}

.sot-prod-scroll__subtitle {
  margin: 0 0 12px;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.55);
}

.sot-prod-scroll__desc {
  margin: 0 0 16px;
  font-size: 0.8125rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.65);
  max-width: 28em;
}

.sot-prod-scroll__items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sot-prod-scroll__items a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
}

.sot-prod-scroll__items a:hover {
  color: #fff;
}

.sot-prod-scroll__item-tag {
  font-family: var(--sot-font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.1em;
  color: #7ec8f7;
}

.sot-prod-scroll__footer {
  padding: clamp(40px, 6vw, 64px) 0;
  background: rgba(248, 250, 252, 0.4);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  text-align: center;
}

.sot-prod-scroll__footer-cta {
  margin: 0;
}

@media (max-width: 767px) {
  .sot-prod-scroll__spacer {
    height: calc(100vh + 210vh);
    height: calc(100dvh + 210dvh);
  }

  .sot-prod-scroll__split {
    flex-direction: column;
  }

  .sot-prod-scroll__panel--right {
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
  }

  .sot-prod-scroll__panel {
    min-height: 42vh;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sot-prod-scroll__spacer {
    height: auto;
  }

  .sot-prod-scroll__sticky {
    position: relative;
    height: auto;
    min-height: 100vh;
  }

  .sot-prod-scroll__frame {
    --pill-p: 1;
    --panel-p: 1;
  }

  .sot-prod-scroll__pill-start {
    display: none;
  }

  .sot-prod-scroll__circle-bg {
    clip-path: inset(0 round 0);
    -webkit-clip-path: inset(0 round 0);
  }

  .sot-prod-scroll__split {
    position: relative;
    opacity: 1;
    pointer-events: auto;
    min-height: 100vh;
  }
}

/* —— Works —— */
.sot-works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 28px);
}

@media (max-width: 991px) {
  .sot-works-grid { grid-template-columns: 1fr; }
}

/* トップ：制作事例マーキー（右→左） */
.sot-works-marquee {
  position: relative;
  margin-top: clamp(28px, 4vw, 40px);
  margin-bottom: 4px;
}

.sot-works-marquee__fade {
  position: absolute;
  top: 0;
  bottom: 0;
  width: clamp(32px, 8vw, 96px);
  z-index: 2;
  pointer-events: none;
}

.sot-works-marquee__fade--left {
  left: 0;
  background: linear-gradient(90deg, var(--sot-bg) 15%, transparent);
}

.sot-works-marquee__fade--right {
  right: 0;
  background: linear-gradient(270deg, var(--sot-bg) 15%, transparent);
}

.sot-works-marquee__viewport {
  overflow: hidden;
  width: 100%;
}

.sot-works-marquee__track {
  display: flex;
  width: max-content;
  animation: sot-works-marquee-rtl 55s linear infinite;
}

.sot-works-marquee:hover .sot-works-marquee__track {
  animation-play-state: paused;
}

.sot-works-marquee__group {
  display: flex;
  flex-shrink: 0;
  gap: clamp(16px, 2.5vw, 24px);
  padding-right: clamp(16px, 2.5vw, 24px);
}

.sot-works-marquee .sot-work-card {
  flex: 0 0 auto;
  width: clamp(280px, 30vw, 360px);
  max-width: 360px;
}

@keyframes sot-works-marquee-rtl {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(-50%, 0, 0); }
}

.sot-work-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid var(--sot-border);
  border-radius: var(--sot-radius);
  overflow: hidden;
  transition: box-shadow 0.25s, transform 0.25s;
}

.sot-work-card:hover {
  box-shadow: var(--sot-shadow);
  transform: translateY(-4px);
}

.sot-work-card__media {
  display: block;
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  line-height: 0;
  margin: 0;
  padding: 0;
  background: linear-gradient(135deg, rgba(3, 110, 184, 0.06), rgba(3, 110, 184, 0.14));
}

.sot-work-card__media img,
.sot-work-card__img {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  max-width: none !important;
  max-height: none !important;
  margin: 0;
  padding: 0;
  border: 0;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.45s ease;
}

.sot-work-card:hover .sot-work-card__img {
  transform: scale(1.04);
}

.sot-work-card__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  font-family: var(--sot-font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--sot-accent);
  border-bottom: 1px dashed var(--sot-border);
}

.sot-work-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: clamp(18px, 2.5vw, 24px);
}

.sot-work-card__client {
  margin: 0 0 8px;
  font-family: var(--sot-font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--sot-accent);
}

.sot-work-card__title {
  font-size: clamp(1rem, 0.92rem + 0.35vw, 1.125rem);
  font-weight: 700;
  line-height: 1.45;
  margin: 0 0 10px;
}

.sot-work-card__title a {
  color: var(--sot-text);
  text-decoration: none;
}

.sot-work-card__title a:hover {
  color: var(--sot-accent);
}

.sot-work-card__excerpt {
  margin: 0 0 14px;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--sot-text-secondary);
  flex: 1;
}

.sot-work-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.sot-work-card__tags li {
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--sot-border);
  background: var(--sot-accent-soft);
  font-family: var(--sot-font-mono);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--sot-accent);
}

.sot-work-card__more {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--sot-border);
}

.sot-work-card__more a {
  font-family: var(--sot-font-display);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--sot-accent);
  text-decoration: none;
}

.sot-work-card__more a:hover {
  text-decoration: underline;
}

/* アーカイブ：既存 row/col 内でカードグリッド */
.sot-works-archive .sot-works-grid.row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 28px);
}

.sot-works-archive .sot-works-grid__item {
  width: 100%;
  max-width: none;
  padding: 0;
}

@media (max-width: 991px) {
  .sot-works-archive .sot-works-grid.row {
    grid-template-columns: 1fr;
  }
}

/* —— Mission —— */
.sot-mission {
  max-width: 800px;
}

.sot-mission__quote {
  font-family: var(--sot-font-display);
  font-size: clamp(1.125rem, 0.9rem + 0.8vw, 1.625rem);
  font-weight: 500;
  line-height: 1.65;
  letter-spacing: -0.02em;
  color: var(--sot-text);
}

.sot-mission__pillars {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 40px;
}

.sot-mission__pill {
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--sot-border);
  font-family: var(--sot-font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--sot-accent);
  background: var(--sot-accent-soft);
}

/* —— Company —— */
.sot-company {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

@media (max-width: 767px) {
  .sot-company { grid-template-columns: 1fr; }
}

.sot-company dl {
  margin: 0;
  display: grid;
  gap: 20px;
}

.sot-company dt {
  font-family: var(--sot-font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--sot-muted);
  margin-bottom: 4px;
}

.sot-company dd {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--sot-text);
}

/* —— Contact CTA —— */
.sot-contact-cta {
  text-align: center;
  padding: clamp(64px, 10vw, 96px) 32px;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--sot-border);
  border-radius: var(--sot-radius-lg);
}

.sot-contact-cta__title {
  font-family: var(--sot-font-display);
  font-size: clamp(1.5rem, 1rem + 1.5vw, 2rem);
  font-weight: 600;
  margin-bottom: 16px;
}

.sot-contact-cta__text {
  color: var(--sot-text-secondary);
  margin-bottom: 32px;
  line-height: 1.9;
}

/* Reveal */
/* セクション全体は常に表示（子要素だけフェードイン） */
body.sot-home .sot-section {
  opacity: 1;
  transform: none;
  background: transparent;
}

body.sot-home .js-reveal {
  opacity: 0;
  transform: translateY(32px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
  transition-delay: calc(var(--reveal-i, 0) * 0.06s);
}

body.sot-home .js-reveal.is-revealed,
body.sot-home.appear .hero-home .js-reveal {
  opacity: 1;
  transform: translateY(0);
}

body.sot-home .eco-network.js-reveal {
  transform: scale(0.88);
}

body.sot-home .eco-network.js-reveal.is-revealed {
  transform: scale(1);
  transition-duration: 1s;
  transition-timing-function: cubic-bezier(0.16, 1.2, 0.38, 1);
}

body.sot-home .sot-mission-eco__visual .eco-network.js-reveal {
  transform: scale(0.92);
}

body.sot-home .sot-mission-eco__visual .eco-network.js-reveal.is-revealed {
  transform: scale(1);
}

@media (max-width: 991px) {
  .eco-network {
    max-width: min(100%, 520px);
  }
}

@media (max-width: 520px) {
  .eco-network {
    max-width: 100%;
  }

  .eco-network__node-label {
    font-size: 14px;
  }

  .eco-network__node-sub {
    font-size: 9px;
  }

  .eco-network__hub-text {
    font-size: 13px;
  }

  .eco-network__hub-sub {
    font-size: 9px;
  }
}

.sot-contact-cta.is-revealed {
  animation: sot-cta-glow 5s ease-in-out infinite;
}

@keyframes sot-cta-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(3, 110, 184, 0); }
  50% { box-shadow: 0 0 0 1px rgba(3, 110, 184, 0.15), 0 20px 60px rgba(3, 110, 184, 0.08); }
}

@media (prefers-reduced-motion: reduce) {
  body.sot-home.theme-tech.appear::before,
  body.sot-home.theme-tech.appear::after,
  body.sot-home .tech-bg-sparks,
  .sot-it-layer--grid-fine,
  .sot-it-layer--grid-major,
  .sot-it-layer--diagonal,
  .sot-it-layer--mesh,
  .sot-it-layer--orbs span {
    animation: none !important;
  }

  body.sot-home .tech-bg-sparks {
    opacity: 0.12;
  }

  .sot-it-layer--canvas {
    display: none;
  }

  body.sot-home .js-reveal,
  .hero-home .hero-home__eyebrow,
  .hero-home .hero-home__title,
  .hero-home__rush-bar,
  .hero-home__rush-bar i,
  .splash-home__streaks span,
  .splash-home__line span,
  .splash-home__rush,
  .splash-home__rush i,
  .sot-btn--primary,
  .sot-btn--primary::after,
  .hero-home__title-accent {
    opacity: 1;
    transform: none;
    filter: none;
    transition: none;
    animation: none !important;
    clip-path: none;
    width: auto;
    left: auto;
  }

  .hero-home__title-accent {
    color: var(--sot-accent);
  }

  .hero-home__rush-bar {
    width: 100%;
    opacity: 1;
  }

  body.sot-home #splash.splash-home.splash-home--exit {
    animation: none !important;
    transform: none;
  }

  .splash-home__rush {
    width: min(320px, 72%);
    opacity: 1;
  }

  .eco-network__line--active,
  .eco-network__line--ring,
  .eco-network__orbit-ring,
  .eco-network--live .eco-network__hub,
  .eco-network--live .eco-network__hub-pulse,
  .eco-network--live .eco-network__node-ring,
  .eco-network--live .eco-network__node-icon,
  .eco-network__packet,
  .sot-contact-cta.is-revealed,
  .hero-home__scroll::after,
  .sot-btn--primary::after {
    animation: none !important;
  }

  .sot-works-marquee__track {
    animation: none !important;
  }

  .sot-works-marquee__group[aria-hidden="true"] {
    display: none;
  }

  .sot-works-marquee__viewport {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scroll-padding-inline: 16px;
  }

  .sot-works-marquee__fade {
    display: none;
  }
}

/* —— About 下層（トップと同じトーン） —— */
body.sot-about {
  --sot-accent: #036eb8;
  --sot-accent-soft: rgba(3, 110, 184, 0.08);
  --sot-accent-mid: rgba(3, 110, 184, 0.18);
  --sot-bg: #ffffff;
  --sot-bg-subtle: #f8fafc;
  --sot-text: #0b1220;
  --sot-text-secondary: #475569;
  --sot-border: rgba(3, 110, 184, 0.1);
  --sot-border-strong: rgba(3, 110, 184, 0.22);
  --sot-radius: 16px;
  --sot-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 12px 40px rgba(3, 110, 184, 0.06);
  --sot-font-display: "Inter", "Noto Sans JP", system-ui, sans-serif;
  --sot-font-body: "Noto Sans JP", system-ui, sans-serif;
  --sot-font-mono: "Inter", ui-monospace, monospace;
  --sot-container: min(1120px, calc(100% - 48px));
  --sot-section: clamp(56px, 9vw, 96px);
  background-color: #fafcff;
  color: var(--sot-text);
  font-family: var(--sot-font-body);
  -webkit-font-smoothing: antialiased;
}

body.sot-about #common .logo img {
  filter: none;
}

body.sot-about main.home-main {
  margin-top: 0;
  padding-top: clamp(88px, 14vw, 120px);
}

body.sot-about .page_title {
  display: none;
}

/* ラベル（英字・カテゴリ） */
.sot-about-label {
  margin: 0 0 10px;
  font-family: var(--sot-font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sot-accent);
}

/* ページ見出し（h1） */
.sot-about-page-head {
  max-width: 40rem;
  margin-bottom: clamp(16px, 3vw, 24px);
  padding-bottom: clamp(32px, 5vw, 48px);
  border-bottom: 2px solid var(--sot-border-strong);
}

.sot-about-page-title {
  margin: 0 0 20px;
  font-family: var(--sot-font-display);
  font-size: clamp(1.875rem, 1.35rem + 2vw, 2.75rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.03em;
  color: var(--sot-text);
}

/* リード文（h1直下のみ・本文より一段大きめ） */
.sot-about-lead {
  margin: 0;
  max-width: 36em;
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.85;
  color: var(--sot-text-secondary);
}

.sot-about-block {
  border-top: 1px solid var(--sot-border);
}

.sot-about-block__inner {
  max-width: 40rem;
}

.sot-about-block--timeline {
  background: rgba(248, 250, 252, 0.55);
  border-bottom: 1px solid var(--sot-border);
}

.sot-about-block--timeline .sot-about-block__inner {
  max-width: 48rem;
}

/* セクション見出しブロック */
.sot-about-block__head {
  margin-bottom: 0;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--sot-border);
}

.sot-about-heading {
  margin: 0;
  font-family: var(--sot-font-display);
  font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.025em;
  color: var(--sot-text);
}

/* 本文ブロック（背景で見出しと分離） */
.sot-about-block__body {
  margin-top: 24px;
  padding: clamp(20px, 3vw, 28px) clamp(20px, 3vw, 24px);
  border-radius: var(--sot-radius);
  background: #fff;
  border: 1px solid var(--sot-border);
}

.sot-about-text {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 2;
  letter-spacing: 0.02em;
  color: var(--sot-text-secondary);
}

.sot-about-text + .sot-about-text {
  margin-top: 1em;
}

.sot-about-text strong {
  font-weight: 600;
  color: var(--sot-text);
}

.sot-about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.sot-about-tags li {
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--sot-border);
  background: var(--sot-bg-subtle);
  font-family: var(--sot-font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--sot-accent);
}

.sot-about-areas {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
}

.sot-about-areas li {
  padding: 16px 18px;
  border-radius: 12px;
  border: 1px solid var(--sot-border);
  background: var(--sot-bg-subtle);
}

.sot-about-areas__name {
  margin: 0 0 6px;
  font-family: var(--sot-font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--sot-text);
}

.sot-about-areas__note {
  margin: 0;
  font-size: 0.8125rem;
  font-weight: 400;
  line-height: 1.55;
  color: var(--sot-text-secondary);
}

@media (max-width: 767px) {
  .sot-about-areas {
    grid-template-columns: 1fr 1fr;
  }
}

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

.sot-about-link {
  margin: 0;
  text-align: center;
}

.sot-about-dl {
  margin: 0;
  border: 1px solid var(--sot-border);
  border-radius: var(--sot-radius);
  background: #fff;
  overflow: hidden;
}

.sot-about-dl > div {
  display: grid;
  grid-template-columns: minmax(108px, 24%) 1fr;
  gap: 8px 20px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--sot-border);
}

.sot-about-dl > div:last-child {
  border-bottom: none;
}

.sot-about-dl dt {
  margin: 0;
  font-family: var(--sot-font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sot-accent);
}

.sot-about-dl dd {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.8;
  color: var(--sot-text-secondary);
}

.sot-about-dl a {
  color: var(--sot-accent);
}

@media (max-width: 600px) {
  .sot-about-dl > div {
    grid-template-columns: 1fr;
  }
}

/* 沿革タイムライン */
.sot-about-timeline {
  position: relative;
  margin: 0;
  padding: 8px 0 8px 0;
  list-style: none;
  max-width: 720px;
}

.sot-about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--sot-accent), rgba(3, 110, 184, 0.12));
  border-radius: 1px;
}

.sot-about-timeline__item {
  position: relative;
  padding: 0 0 28px 36px;
}

.sot-about-timeline__item:last-child {
  padding-bottom: 0;
}

.sot-about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--sot-accent);
  box-shadow: 0 0 0 3px var(--sot-accent-soft);
}

.sot-about-timeline__item.is-current::before {
  background: var(--sot-accent);
}

.sot-about-timeline__date {
  margin: 0 0 4px;
  font-family: var(--sot-font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--sot-accent);
}

.sot-about-timeline__date time {
  font-weight: inherit;
}

.sot-about-timeline__title {
  margin: 0 0 8px;
  font-family: var(--sot-font-display);
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.02em;
  color: var(--sot-text);
}

.sot-about-timeline__text {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 400;
  line-height: 1.75;
  color: var(--sot-text-secondary);
}

.sot-about-timeline__item.is-current .sot-about-timeline__title {
  color: var(--sot-accent);
}

body.sot-about .sot-contact-cta {
  max-width: 640px;
  margin-inline: auto;
}