/* ============================================================
   CSS Variables
   ============================================================ */
:root {
  --color-red: #da2532;
  --color-red-dark: #8d010b;
  --color-red-mid: #ca1f2b;
  --color-dark: #1d1d1d;
  --color-dark2: #222222;
  --color-light: #f5f5f5;
  --color-white: #ffffff;
  --color-border: rgba(218, 37, 50, 0.5);
  --color-text-gray: #b9b9b9;
  --gradient-red: linear-gradient(162.44deg, #da2532 0%, #8d010b 100%);
  --gradient-red-soft: linear-gradient(
    162.44deg,
    rgba(218, 37, 50, 0.8) 0%,
    #8d010b 100%
  );
  --font-primary: "Noto Sans JP", sans-serif;
}

/* ============================================================
   Reset & Base
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

html {
  overflow-x: hidden;
  background-color: #050f3c; /* canvas fallback: ヒーロー濃紺に統一し上端白線を防止 */
}

body {
  font-family: var(--font-primary);
  font-size: 16px;
  color: var(--color-dark2);
  background-color: transparent; /* fixed背景ビデオが透けるよう透明に */
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
}

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: fixed;
  top: 80px;
  left: 0;
  right: 0;
  height: 85px;
  z-index: 1000;
  background: transparent;
 transition: top 0.3s ease; 
}
.site-header.is-scrolled {
  top: 0;
}

.site-header::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: max(16px, calc((100% - 1200px) / 2));
  right: max(16px, calc((100% - 1200px) / 2));
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 12px;
  transition:
    top 0.35s ease,
    bottom 0.35s ease,
    left 0.35s ease,
    right 0.35s ease,
    border-radius 0.35s ease,
    background 0.35s ease;
  pointer-events: none;
}

.site-header.is-scrolled::before {
  top: 0;
  bottom: 0;
  left: 16px;
  right: 16px;
  border-radius: 0 0 10px 10px;
  background: rgba(0, 0, 0, 0.85);
}

.header-inner {
  max-width: 1200px;
  margin: 10px auto 10px;
  height: 65px;
  padding: 10px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  position: relative;
  z-index: 1;
}

.header-logo {
  display: flex;
  flex-direction: column;
  gap: 5px;
  opacity: 0.9;
  color: var(--color-white);
  padding: 10px 0;
}

.logo-name {
  height: 42px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-link {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.4px;
  white-space: nowrap;
  color: var(--color-white);
  padding: 6px 10px;
  border-radius: 4px;
  position: relative;
  transition: opacity 0.2s;
}

.nav-link:not(.nav-cta-btn)::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 1.5px solid rgba(255, 255, 255, 0.85);
  border-radius: 4px;
  transform: scale(0);
  transform-origin: center;
  transition: transform 0.25s ease;
}

.nav-link:not(.nav-cta-btn):hover::before {
  transform: scale(1);
}

.nav-link:not(.nav-cta-btn):hover {
  opacity: 1;
  background: transparent;
}

.nav-cta-btn {
  background: var(--gradient-red);
  border: 2px solid var(--color-light);
  padding: 6px 14px;
  border-radius: 4px;
  opacity: 1 !important;
  transition:
    background 0.2s,
    color 0.2s;
}

/* header-inner 枠線描画アニメーション */
.header-border-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: visible;
  z-index: 10;
}

.header-border-rect {
  fill: none;
  stroke: #ffffff;
  stroke-width: 2;
  width: calc(100% - 2px);
  height: calc(100% - 2px);
  stroke-dasharray: 2600;
  stroke-dashoffset: 2600;
  animation: header-border-draw 1.2s cubic-bezier(0.4, 0, 0.2, 1) 0.2s forwards,
             header-border-fade 0.5s ease 2s forwards;
}

@keyframes header-border-draw {
  to { stroke-dashoffset: 0; }
}

@keyframes header-border-fade {
  to { opacity: 0; }
}

.nav-cta-btn:hover {
  background: var(--color-light);
  color: var(--color-red-mid);
  opacity: 1 !important;
}

.nav-divider {
  display: inline-block;
  width: 1px;
  height: 25px;
  background: var(--color-white);
  opacity: 0.4;
  margin: 0 16px;
}

/* ============================================================
   Hamburger Button
   ============================================================ */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px;
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

.hamburger-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transform-origin: center;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger-btn.is-open .hamburger-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger-btn.is-open .hamburger-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger-btn.is-open .hamburger-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================================
   Mobile Nav
   ============================================================ */
.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.mobile-nav-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav {
  position: fixed;
  top: 0;
  left: max(16px, calc((100% - 1200px) / 2));
  right: max(16px, calc((100% - 1200px) / 2));
  max-height: calc(100dvh - 85px);
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 0 0 12px 12px;
  z-index: 999;
  transform: translateY(-100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  padding-top: 40px;
  padding-bottom: 24px;
  overflow-y: auto;
}

.mobile-nav.is-open {
  transform: translateY(45px);
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
}

.mobile-nav-list .nav-link {
  font-size: 14px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.9);
  padding: 15px 32px;
  border-radius: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  white-space: normal;
  display: block;
  background: transparent;
}

.mobile-nav-list .nav-link:not(.nav-cta-btn):hover {
  background: rgba(218, 37, 50, 0.18);
  opacity: 1;
}

.mobile-nav-list .nav-cta-btn {
  margin: 28px 28px 0;
  text-align: center;
  border-radius: 6px;
  padding: 14px 24px;
  border: 2px solid var(--color-light);
  background: var(--gradient-red);
  display: block;
  opacity: 1 !important;
}

.mobile-nav-list .nav-cta-btn:hover {
  background: var(--color-light);
  color: var(--color-red-mid);
}

/* ============================================================
   Column Nav Dropdown
   ============================================================ */
.nav-dropdown-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.col-dropdown {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  width: 380px;
  background: rgba(8, 8, 18, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-radius: 8px;
  padding: 10px;
  display: none;
  grid-template-columns: 1fr;
  gap: 8px;
  z-index: 200;
  border-top: 2px solid var(--color-red);
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.55);
}

.col-dropdown.is-open {
  display: grid;
}

.col-dd-card {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  overflow: hidden;
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s;
}

.col-dd-card:hover {
  background: rgba(255, 255, 255, 0.11);
  border-color: rgba(255, 255, 255, 0.22);
}

.col-dd-img {
  width: 96px;
  min-width: 96px;
  height: 68px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.04);
  flex-shrink: 0;
}

.col-dd-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.col-dd-title {
  font-size: 11.5px;
  font-weight: 500;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.88);
  padding: 8px 10px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  overflow: hidden;
  align-self: center;
}

/* ============================================================
   Hero Section
   ============================================================ */
.hero-section {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.hero-bg-layer {
  position: absolute;
  inset: 0;
  opacity: 0.4;
  pointer-events: none;
}

.hero-bg-img {
  width: 100%;
  height: 186.83%;
  object-fit: cover;
  position: absolute;
  top: -43.41%;
  left: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(5, 15, 60, 0.92);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-overlay > .hero-content {
  width: 100%;
  max-width: 1080px;
  padding: 0 40px;
}

.hero-person {
  position: absolute;
  right: 0;
  top: 0;
  width: 50%;
  height: 100%;
  overflow: hidden;
  filter: grayscale(100%);
  transition: filter 4s ease;
}

.hero-person.is-grayscale {
  filter: grayscale(0%);
}

.hero-slides {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.hero-slide {
  position: absolute;
  inset: 0;
  transform: translateX(100%);
  transition: transform 0.8s ease;
  z-index: 0;
}

.hero-slide.is-active {
  transform: translateX(0);
  z-index: 2;
}

.hero-slide.is-prev {
  transform: translateX(0);
  z-index: 1;
  transition: none;
}

.hero-person-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  max-width: none;
}

.hero-content {
  position: relative;
  width: auto;
  z-index: 1;
}

.hero-heading-block {
  width: auto;
}

.hero-en-row {
  display: flex;
  align-items: center;
  width: 480px;
  margin-bottom: 12px;
  overflow: hidden;
}

.hero-en-label {
  display: block;
  max-width: 100%;
  height: auto;
  opacity: 0.9;
  transform: translateY(150%);
  animation: slide-up-label 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.2s forwards;
}

@keyframes slide-up-label {
  from {
    transform: translateY(150%);
  }
  to {
    transform: translateY(0);
  }
}

.hero-title-bg {
  background: transparent;
  height: 64px;
  display: flex;
  align-items: center;
  margin-bottom: 11px;
  transition: background 0.5s ease;
}

.hero-title-bg.is-visible {
  background: var(--color-light);
}

.hero-title-bg--wide,
.hero-title-bg--narrow {
  width: fit-content;
}

.hero-title-text {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--color-red-mid);
  line-height: 64px;
  white-space: nowrap;
  padding: 0 20px;
  animation: blink-cursor 0.7s step-end infinite;
}

@keyframes blink-cursor {
  0%,
  100% {
    border-color: var(--color-red-mid);
  }
  50% {
    border-color: transparent;
  }
}

.hero-body-wrap {
  overflow: hidden;
  margin-top: 37px;
}

.hero-body {
  display: block;
  max-width: 518px;
  height: auto;
  transform: translateY(150%);
}

.hero-body.is-sliding {
  animation: slide-up-label 0.6s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.hero-cta-wrap {
  overflow: hidden;
  margin-top: 32px;
}

.hero-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 280px;
  height: 56px;
  background: var(--gradient-red);
  color: var(--color-light);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 2px;
  text-decoration: none;
  text-align: center;
  border: 2px solid var(--color-light);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
  transform: translateY(150%);
  transition:
    background 0.25s ease,
    color 0.25s ease;
  position: relative;
}

.hero-cta-btn:hover {
  background: var(--color-light);
  color: var(--color-red-mid);
}

.hero-cta-btn.is-sliding {
  animation: slide-up-label 0.6s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

/* ============================================================
   About Section
   ============================================================ */
.about-section {
  position: relative;
  background: linear-gradient(to bottom,
    rgba(255,255,255,0) 0px,
    rgba(255,255,255,0) 80px,
    #ffffff 290px
  );
  overflow: hidden;
  padding-bottom: 0;
}

/* AI/Security decoration */
.about-deco {
  position: absolute;
  right: 0;
  top: 0;
  width: 360px;
  bottom: 640px;
  pointer-events: none;
  z-index: 0;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0) 0%, rgba(0,0,0,1) 6%, rgba(0,0,0,1) 88%, rgba(0,0,0,0) 100%);
}
.about-deco svg {
  width: 100%;
  height: 100%;
}
@media (max-width: 1200px) {
  .about-deco { width: 260px; opacity: 0.65; }
}
@media (max-width: 960px) {
  .about-deco { display: none; }
}


.about-content {
  position: relative;
  z-index: 1;
  max-width: 1080px;
  margin: 0 auto;
  padding: 100px 40px 0;
  text-align: center;
}

.about-label-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 36px;
}

.about-divider {
  display: block;
  width: 123px;
  height: 1px;
  background: var(--color-dark2);
}

.about-label-en {
  font-size: 21px;
  font-weight: 500;
  letter-spacing: 2.4px;
  color: var(--color-dark2);
  padding: 0 20px;
  line-height: 24px;
}



.about-heading {
  font-size: 40px;
  font-weight: 900;
  letter-spacing: 4px;
  color: #ffffff;
  line-height: 1.5;
  margin-bottom: 30px;
}

.about-heading-em {
  font-size: 44px;
  line-height: 1.2;
  color: #ffffff;
  transition: color 0.7s ease;
}

.about-heading-em.is-red {
  color: var(--color-red-mid);
}

.about-lead {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.75;
  color: var(--color-dark2);
  margin: 32px 0 48px;
  text-align: left;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.about-lead--center {
  text-align: center;
}

.about-lead.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.about-hub-card {
  display: flex;
  align-items: center;
  gap: 36px;
  border: 1px solid #b0b0b0;
  border-radius: 28px 0 28px 0;
  padding: 32px 40px;
  margin: 0 0 48px;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.about-hub-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.about-hub-icon {
  flex-shrink: 0;
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-hub-icon-kanji {
  font-size: 36px;
  font-weight: 900;
  color: #1a1a3e;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  line-height: 1;
  letter-spacing: 0;
}

.about-hub-icon-kanji img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.about-hub-title {
  color: inherit;
  font-weight: 900;
  transition: color 0.6s ease;
}

.about-hub-title.is-red {
  color: var(--color-red-mid);
}

.about-hub-text {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.9;
  color: var(--color-dark2);
  text-align: left;
}

.about-lead-mark {
  background-image: linear-gradient(rgba(255, 235, 0, 0.55), rgba(255, 235, 0, 0.55));
  background-size: 0% 42%;
  background-repeat: no-repeat;
  background-position: left bottom;
  transition: background-size 0.6s ease;
}

.about-lead-mark.is-marked {
  background-size: 100% 42%;
}

.sec-three-lead-mark {
  background-image: linear-gradient(rgba(255, 235, 0, 0.55), rgba(255, 235, 0, 0.55));
  background-size: 0% 42%;
  background-repeat: no-repeat;
  background-position: left bottom;
  transition: background-size 0.6s ease;
}

.sec-three-lead-mark.is-marked {
  background-size: 100% 42%;
}


/* ソリューションカード */
.sol-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 64px;
  margin: 96px 0 80px;
}

.sol-card {
  background: #fff;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.sol-card-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 28px 0 28px 0;
  opacity: 0;
  transition: opacity 0.7s ease;
}

.sol-card-img.is-visible {
  opacity: 1;
}

.sol-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.sol-card:hover .sol-card-img img {
  transform: scale(1.04);
}

.sol-card-body {
  padding: 16px 0 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
}

.sol-card-title {
  font-size: 18px;
  font-weight: 900;
  color: var(--color-dark2);
  letter-spacing: 0.5px;
  line-height: 1.5;
  margin: 0;
  opacity: 0;
}

.sol-card-desc {
  font-size: 15px;
  color: #555;
  line-height: 1.8;
  margin: 0;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.sol-card-desc.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .sol-cards {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

.about-img-wave {
  position: absolute;
  top: -1px;
  left: 0;
  width: 100%;
  z-index: 2;
  line-height: 0;
  transform: scaleY(-1) scaleX(-1);
}

.about-img-wave svg {
  display: block;
  width: 100%;
  height: 90px;
}

.about-img-strip {
  position: relative;
  width: 100%;
  height: 640px;
  overflow: hidden;
  margin-top: 0;
  z-index: 1;
}

.about-img-strip img {
  width: 100%;
  height: 133.33%;
  object-fit: cover;
  position: absolute;
  top: -16.67%;
  left: 0;
  max-width: none;
}

.about-img-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.2);
}

/* ============================================================
   Section Intro（parallaxに割り込むタイトルブロック）
   ============================================================ */
.sec-intro {
  position: relative;
  z-index: 10;
  background: linear-gradient(to bottom, transparent 160px, #e8e8e8 160px);
  margin-top: -160px;
  padding: 0 40px 60px;
  text-align: center;
}
.sec-intro-inner {
  max-width: 1080px;
  margin: 0 auto;
  background: #e8e8e8;
  padding: 56px 80px 64px;
  box-shadow: none;
  border-radius: 24px 0 0 0;
}
.sec-intro-title {
  font-size: clamp(18px, 2.2vw, 34px);
  font-weight: 900;
  color: var(--color-dark2);
  line-height: 1.7;
  letter-spacing: 0.02em;
  margin: 0;
}
.sec-intro-em {
  font-size: 1.15em;
  color: inherit;
  transition: color 0.7s ease;
}
.sec-intro-em.is-red {
  color: var(--color-red-mid);
}
.sec-intro-lead {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.75;
  color: var(--color-dark2);
  margin: 32px 0 0;
  text-align: center;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.sec-intro-lead.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.sec-intro-mark {
  background-image: linear-gradient(rgba(255, 235, 0, 0.55), rgba(255, 235, 0, 0.55));
  background-size: 0% 42%;
  background-repeat: no-repeat;
  background-position: left bottom;
  transition: background-size 0.6s ease;
}
.sec-intro-mark.is-marked {
  background-size: 100% 42%;
}

/* si-cards */
.si-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 52px;
  margin-left: -40px;
  margin-right: -40px;
  margin-bottom: 0;
}
.si-card {
  background: #ffffff;
  padding: 36px 20px 40px;
  border-radius: 28px 0 28px 0;
  text-align: center;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.si-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.si-card-icon {
  width: 120px;
  height: 120px;
  margin: 0 auto 20px;
}
.si-card-icon-kanji {
  font-size: 28px;
  font-weight: 900;
  color: #1a1a3e;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}
.si-card-icon-kanji img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.si-card-title {
  font-size: 17px;
  font-weight: 900;
  color: var(--color-dark2);
  letter-spacing: 0.5px;
  line-height: 1.5;
  margin: 0 0 12px;
  text-align: center;
}
.si-card-desc {
  font-size: 14px;
  color: #555;
  line-height: 1.85;
  margin: 0;
  text-align: left;
}

@media (max-width: 768px) {
  .si-cards { grid-template-columns: 1fr; gap: 20px; margin-top: 36px; margin-left: 0; margin-right: 0; }
}

@media (max-width: 480px) {
  .si-cards { margin-left: -24px; margin-right: -24px; }
}

/* sec-intro-network */
.sec-intro-network {
  margin: 0 -40px;
  height: 160px;
  position: relative;
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
}
.net-svg {
  width: 100%;
  height: 100%;
  display: block;
}
.net-lines line {
  opacity: 0.1;
  animation: netLinePulse 5s ease-in-out infinite;
}
.net-lines line:nth-child(2n) { animation-delay: -1.2s; }
.net-lines line:nth-child(3n) { animation-delay: -2.4s; }
.net-lines line:nth-child(5n) { animation-delay: -3.6s; }
.net-lines line:nth-child(7n) { animation-delay: -0.8s; }
.net-signals line {
  stroke-dasharray: 0.12 1;
  stroke-dashoffset: 1.12;
  opacity: 0;
  animation: netSignalFlow 4s linear infinite;
}
.net-signals line:nth-child(2) { animation-delay: -1s; }
.net-signals line:nth-child(3) { animation-delay: -2s; }
.net-signals line:nth-child(4) { animation-delay: -3s; }
.net-nodes circle {
  opacity: 0.2;
  animation: netNodePulse 4s ease-in-out infinite;
}
.net-nodes circle:nth-child(2n) { animation-delay: -0.6s; }
.net-nodes circle:nth-child(3n) { animation-delay: -1.2s; }
.net-nodes circle:nth-child(5n) { animation-delay: -1.8s; }
.net-nodes circle:nth-child(7n) { animation-delay: -2.4s; }
@keyframes netLinePulse {
  0%, 100% { opacity: 0.07; }
  50% { opacity: 0.18; }
}
@keyframes netSignalFlow {
  0% { stroke-dashoffset: 1.12; opacity: 0; }
  8% { opacity: 0.75; }
  85% { opacity: 0.75; }
  100% { stroke-dashoffset: -0.12; opacity: 0; }
}
@keyframes netNodePulse {
  0%, 100% { opacity: 0.18; }
  50% { opacity: 0.5; }
}

/* exp-cards */
.exp-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1080px;
  margin: 48px auto 0;
  padding: 0 40px 80px;
}

.exp-card {
  background: #ffffff;
  padding: 36px 24px 40px;
  border-radius: 28px 0 28px 0;
  text-align: center;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.exp-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.exp-card-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto -32px;
  background: #f0f0f0;
  border-radius: 50%;
  display: flex;
  position: relative;
  z-index: 1;
  align-items: center;
  justify-content: center;
}

.exp-card-img {
  width: 100%;
  aspect-ratio: 2 / 1;
  overflow: hidden;
  margin-bottom: 20px;
  border: 4px solid #f0f0f0;
  box-sizing: border-box;
}

.exp-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.exp-card-icon-kanji {
  font-size: 28px;
  font-weight: 900;
  color: var(--color-dark2);
  line-height: 1;
}

.exp-card-title {
  font-size: 17px;
  font-weight: 900;
  color: var(--color-dark2);
  margin: 0 0 12px;
  text-align: center;
  transition: color 0.6s ease 0.15s;
  min-height: 3em;
  display: flex;
  align-items: center;
  justify-content: center;
}

.exp-card.is-visible .exp-card-title {
  color: var(--color-red-mid);
}

.exp-card-subtitle {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-dark2);
  margin: 4px 0 12px;
  text-align: left;
}

.exp-card-desc {
  font-size: 14px;
  color: #555;
  line-height: 1.85;
  text-align: left;
}

.exp-card-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
}

.exp-card-list li {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-dark2);
  padding: 4px 0;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  text-align: left;
  line-height: 1.6;
}

.exp-card-list li::before {
  content: '';
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-red-mid);
  margin-top: calc(0.8em - 5px);
}

@media (max-width: 768px) {
  .exp-cards {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 0 20px 60px;
  }
}

@media (max-width: 768px) {
  .sec-intro {
    margin-top: -100px;
    padding: 0 20px;
    background: linear-gradient(to bottom, transparent 100px, #e8e8e8 100px);
  }
  .sec-intro-inner { padding: 44px 36px 52px; }
}
@media (max-width: 480px) {
  .sec-intro {
    margin-top: -80px;
    background: linear-gradient(to bottom, transparent 80px, #e8e8e8 80px);
  }
  .sec-intro-inner { padding: 36px 24px 44px; }
}

/* ============================================================
   Businesses Section
   ============================================================ */
.businesses-section {
  position: relative;
  overflow: hidden;
  background: var(--color-white);
}

.businesses-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.businesses-bg-img {
  position: absolute;
  width: 100%;
  height: 133.43%;
  object-fit: cover;
  top: -16.72%;
  left: 0;
  max-width: none;
  opacity: 0;
}

.businesses-bg-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    162.44deg,
    rgb(180, 20, 35) 0%,
    rgb(90, 0, 7) 100%
  );
  opacity: 0;
}

.businesses-inner {
  position: relative;
  z-index: 1;
  max-width: 1080px;
  margin: 0 auto;
  padding: 100px 40px 0;
}

.businesses-header-row {
  display: flex;
  align-items: center;
  margin-bottom: 0;
}

.section-heading {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--color-dark2);
  line-height: 64px;
  margin-bottom: 30px;
}

.businesses-divider {
  flex: 1;
  height: 1px;
  background: var(--color-dark2);
  opacity: 0.2;
  margin-top: 10px;
}

.businesses-title-ja {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 3.2px;
  color: var(--color-white);
  line-height: 51.2px;
  margin-top: 0;
  margin-bottom: 25px;
}

.service-mini-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.service-mini-card {
  position: relative;
  overflow: hidden;
  background-color: #050f3c;
  background-size: cover;
  background-position: center;
  border: none;
  padding: 28px 24px 0;
  min-height: 280px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 0;
}

/* 背景画像レイヤー */
.smc-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  z-index: 0;
}


.service-mini-card:nth-child(1) .smc-bg { background-image: url("img/any_industry_01.jpg"); }
.service-mini-card:nth-child(2) .smc-bg { background-image: url("img/any_industry_02.jpg"); }
.service-mini-card:nth-child(3) .smc-bg { background-image: url("img/any_industry_03.jpg"); }
.service-mini-card:nth-child(4) .smc-bg { background-image: url("img/any_industry_04.jpg"); }
.service-mini-card:nth-child(5) .smc-bg { background-image: url("img/any_industry_05.jpg"); }
.service-mini-card:nth-child(6) .smc-bg { background-image: url("img/any_industry_06.jpg"); }

.service-mini-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(5, 15, 60, 0.62);
  pointer-events: none;
  z-index: 1;
}

.service-mini-card::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 70%;
  background: linear-gradient(to bottom, transparent, rgba(202, 31, 43, 0.06));
  pointer-events: none;
  z-index: 0;
  transform: translateY(100%);
  transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.service-mini-cards.is-visible .service-mini-card::after {
  transform: translateY(0);
}

.service-mini-cards.is-visible .service-mini-card:nth-child(2)::after {
  transition-delay: 120ms;
}
.service-mini-cards.is-visible .service-mini-card:nth-child(3)::after {
  transition-delay: 240ms;
}
.service-mini-cards.is-visible .service-mini-card:nth-child(4)::after {
  transition-delay: 360ms;
}
.service-mini-cards.is-visible .service-mini-card:nth-child(5)::after {
  transition-delay: 480ms;
}
.service-mini-cards.is-visible .service-mini-card:nth-child(6)::after {
  transition-delay: 600ms;
}

.service-mini-card > *:not(.smc-bg) {
  position: relative;
  z-index: 1;
}

.service-mini-title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: #ffffff;
  line-height: 1.5;
  margin-bottom: 10px;
}

.service-mini-desc {
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.7;
}

.service-mini-body {
  position: relative;
  z-index: 1;
  padding: 8px 0 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  flex: 1;
  justify-content: center;
}


.businesses-list {
  display: flex;
  gap: 40px;
  padding: 0 80px 0;
  padding-bottom: 0;
  margin-top: 25px;
}

.business-card {
  flex: 1;
  max-width: 620px;
  background: rgba(255, 255, 255, 0);
  box-shadow: 4px 4px 40px 0 rgba(0, 0, 0, 0.32);
}

.business-card-img-wrap {
  position: relative;
  height: 259px;
  overflow: hidden;
}

.business-card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.business-card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
}

.business-card-deco-tl {
  position: absolute;
  top: 0;
  left: 0;
}

.business-card-deco-tl .deco-h {
  position: absolute;
  top: 39.5px;
  left: 24px;
  width: 40px;
  height: 1px;
  background: rgba(255, 255, 255, 0.5);
  display: block;
}

.business-card-deco-tl .deco-v {
  position: absolute;
  top: 40.5px;
  left: 24px;
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.5);
  display: block;
}

.business-card-deco-br {
  position: absolute;
  bottom: 0;
  right: 0;
}

.business-card-deco-br .deco-v {
  position: absolute;
  bottom: 40px;
  right: 24px;
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.5);
  display: block;
}

.business-card-deco-br .deco-h {
  position: absolute;
  bottom: 40.5px;
  right: 24px;
  width: 40px;
  height: 1px;
  background: rgba(255, 255, 255, 0.5);
  display: block;
}

.business-card-en {
  position: absolute;
  top: 88px;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 17.5px;
  font-weight: 500;
  letter-spacing: 1px;
  color: var(--color-light);
  line-height: 20px;
  z-index: 1;
}

.business-card-title {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-25%);
  text-align: center;
  font-size: 56px;
  font-weight: 700;
  letter-spacing: 5.6px;
  color: var(--color-light);
  line-height: 67.2px;
  z-index: 1;
}

.business-card-body {
  background: var(--color-white);
  padding: 42px 65px;
}

.business-card-body p {
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 1.6px;
  color: var(--color-dark2);
  line-height: 28.8px;
}

/* ============================================================
   Responsibilities Section
   ============================================================ */
.sec-ai-solutions {
  background: #0A1628;
  position: relative;
  padding: 100px 0 160px;
}
.resp-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 40px;
}
.sec-ai-solutions .about-heading {
  color: #ffffff;
  text-align: center;
}
.sec-ai-solutions .about-lead {
  color: rgba(255, 255, 255, 0.85);
}
.resp-lead-powered {
  display: block;
  text-align: center;
  font-size: 13px;
  font-weight: 400;
  opacity: 0.6;
  letter-spacing: 0.05em;
}
.resp-bubble {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  max-width: 840px;
  width: 100%;
  margin: 40px auto 0;
  padding: 22px 48px;
  background: #ffffff;
  border-radius: 6px;
  text-align: center;
  opacity: 0;
  transition: opacity 0.7s ease;
}
.resp-bubble.is-visible {
  opacity: 1;
}
.resp-bubble-mark {
  background-image: linear-gradient(rgba(255, 235, 0, 0.55), rgba(255, 235, 0, 0.55));
  background-size: 0% 42%;
  background-repeat: no-repeat;
  background-position: left bottom;
  transition: background-size 0.6s ease;
}
.resp-bubble-mark.is-marked {
  background-size: 100% 42%;
}
.resp-bubble span {
  color: #0A1628;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.4;
}
.resp-bubble::after {
  content: '';
  position: absolute;
  bottom: -22px;
  left: 50%;
  transform: translateX(-50%);
  border-left: 22px solid transparent;
  border-right: 22px solid transparent;
  border-top: 22px solid #ffffff;
}
.resp-diagram {
  display: flex;
  justify-content: center;
  margin-top: 56px;
  opacity: 0;
  transition: opacity 0.8s ease;
}
.resp-diagram.is-visible {
  opacity: 1;
}
.resp-diagram {
  padding: 40px;
  background: #eff6fd;
  border: 2px solid rgba(10, 22, 40, 0.15);
  border-radius: 16px 0 16px 0;
}
.resp-diagram-img {
  width: 100%;
  max-width: 800px;
  height: auto;
  display: block;
}
.sec-intro-bottom-wave,
.resp-bottom-wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 130px;
  overflow: hidden;
  pointer-events: none;
  z-index: 2;
}
.siw-svg {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 200%;
  height: 100%;
}
.siw-svg--1 {
  animation: wave-flow 45s linear infinite;
}
.siw-svg--2 {
  opacity: 0.45;
  animation: wave-flow 60s linear infinite reverse;
}

.resp-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 40px;
  position: relative;
}

.resp-header-row {
  display: flex;
  align-items: center;
  margin-bottom: 48px;
}

.resp-title-mask {
  overflow: hidden;
  flex-shrink: 0;
  margin-right: 20px;
}

.resp-title-en {
  font-size: 68.8px;
  font-weight: 500;
  letter-spacing: 4px;
  color: #c9a84c;
  line-height: 80px;
  transform: translateY(110%);
  transition: transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
}

.sec-ai-solutions.is-visible .resp-title-en {
  transform: translateY(0);
}

.sec-ai-solutions.is-visible .resp-divider {
  transform: scaleX(1);
}

.resp-divider {
  flex: 1;
  height: 1px;
  background: var(--color-white);
  opacity: 0.5;
  margin-top: 10px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.65s;
}

.resp-title-ja {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 3.2px;
  color: var(--color-white);
  line-height: 51.2px;
  margin-bottom: 60px;
}

/* Responsibility Item */
.resp-item {
  position: relative;
  display: flex;
  align-items: flex-start;
  margin-bottom: 60px;
}

.resp-item--left {
  flex-direction: row;
}

.resp-item--right {
  flex-direction: row-reverse;
}

.resp-item-img {
  position: relative;
  width: 60%;
  height: 409px;
  flex-shrink: 0;
  overflow: hidden;
}

.resp-item-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.resp-img-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.2);
}

.resp-img-slide {
  position: absolute;
  inset: 0;
  background: #050f3c;
  z-index: 2;
  transform: translateX(0);
  transition: transform 0.85s cubic-bezier(0.77, 0, 0.18, 1);
}

.resp-item-img.is-revealed .resp-img-slide {
  transform: translateX(-100%);
}

.resp-item-content {
  flex: 1;
  padding: 60px 48px;
}

.resp-item-deco {
  width: 56px;
  height: 82px;
  overflow: hidden;
  margin-bottom: 10px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.resp-item-deco span {
  display: block;
  width: 14px;
  height: 100px;
  background: var(--color-light);
  transform: rotate(26deg);
}

.resp-item-en {
  font-size: 16.7px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-light);
  opacity: 0.9;
  line-height: 26px;
  margin-bottom: 4px;
}

.resp-item-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 2.8px;
  color: var(--color-light);
  line-height: 44.8px;
  transition: color 0.8s ease;
  margin-bottom: 20px;
}

.resp-item-body {
  font-size: 16px;
  font-weight: 300;
  letter-spacing: 3.2px;
  color: var(--color-light);
  line-height: 28.8px;
  max-width: 595px;
}

.resp-item-num {
  position: absolute;
  z-index: 3;
  font-size: 120px;
  font-weight: 900;
  letter-spacing: 7.6px;
  color: var(--color-light);
  line-height: 1;
  transition: color 0.8s ease;
}

.resp-item.is-visible .resp-item-num {
  color: #c9a84c;
}

.resp-item.is-visible .resp-item-title {
  color: #c9a84c;
}

.resp-item--left .resp-item-num {
  left: 48%;
  top: 20px;
}

.resp-item--right .resp-item-num {
  right: 48%;
  top: 20px;
}

/* ============================================================
   3つのAIセキュリティソリューション Section
   ============================================================ */
.sec-three-solutions {
  background: #f0f0f0;
  padding: 100px 0 80px;
  position: relative;
}
.sts-deco {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 120px;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0) 0%, rgba(0,0,0,1) 5%, rgba(0,0,0,1) 92%, rgba(0,0,0,0) 100%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0) 0%, rgba(0,0,0,1) 5%, rgba(0,0,0,1) 92%, rgba(0,0,0,0) 100%);
}
.sts-svg {
  width: 100%;
  height: 100%;
  display: block;
}
.sec-three-solutions-inner,
.sec-three-cards {
  position: relative;
  z-index: 1;
}
@media (max-width: 1200px) {
  .sts-deco { width: 80px; opacity: 0.6; }
}
@media (max-width: 960px) {
  .sts-deco { display: none; }
}
.sec-three-solutions .about-heading {
  color: var(--color-dark2);
}
.sec-three-num {
  font-size: 1.3em;
  line-height: 1;
  vertical-align: baseline;
}
.sec-three-em {
  font-size: 1.1em;
  line-height: 1;
  vertical-align: baseline;
  transition: color 0.6s ease;
}
.sec-three-em.is-red {
  color: var(--color-red-mid);
}
.sec-three-solutions-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 40px;
  text-align: center;
}
.sec-three-solutions-lead {
  color: var(--color-dark2);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.sec-three-solutions-lead.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.faq-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 40px;
}

.faq-header-row {
  display: flex;
  align-items: center;
  margin-bottom: 56px;
}

.faq-title-mask {
  overflow: hidden;
  flex-shrink: 0;
  margin-right: 20px;
}

.faq-title-en {
  font-size: 52px;
  font-weight: 500;
  letter-spacing: 4px;
  color: var(--color-dark2);
  line-height: 80px;
  transform: translateY(110%);
  transition: transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
}

.sec-three-solutions.is-visible .faq-title-en {
  transform: translateY(0);
}

.sec-three-solutions.is-visible .faq-divider {
  transform: scaleX(1);
}

.faq-divider {
  flex: 1;
  height: 1px;
  background: var(--color-dark2);
  opacity: 0.2;
  margin-top: 10px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.65s;
}

.faq-list {
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.faq-item {
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.faq-q {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 0;
  cursor: pointer;
  user-select: none;
  list-style: none;
}

.faq-q-label {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-red-mid);
  flex-shrink: 0;
  width: 24px;
  line-height: 1;
}

.faq-q-text {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-dark2);
  letter-spacing: 0.5px;
  line-height: 1.6;
}

.faq-q-icon {
  width: 24px;
  height: 24px;
  position: relative;
  flex-shrink: 0;
}

.faq-q-icon::before,
.faq-q-icon::after {
  content: "";
  position: absolute;
  background: var(--color-dark2);
  top: 50%;
  left: 50%;
  transition:
    transform 0.35s ease,
    opacity 0.35s ease;
}

.faq-q-icon::before {
  width: 16px;
  height: 1px;
  transform: translate(-50%, -50%);
}

.faq-q-icon::after {
  width: 1px;
  height: 16px;
  transform: translate(-50%, -50%);
}

.faq-item.is-open .faq-q-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.faq-a {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-a-inner {
  display: flex;
  gap: 16px;
  padding: 0 0 28px;
}

.faq-a-label {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-dark2);
  opacity: 0.3;
  flex-shrink: 0;
  width: 24px;
  line-height: 1.6;
}

.faq-a-text {
  flex: 1;
  font-size: 15px;
  font-weight: 400;
  color: var(--color-dark2);
  letter-spacing: 0.5px;
  line-height: 1.9;
}

/* ============================================================
   Jobs Section
   ============================================================ */
.company-section {
  position: relative;
  background: var(--color-light);
  padding: 100px 0;
  overflow: hidden;
}

.company-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 28px,
    rgba(218, 37, 50, 0.028) 28px,
    rgba(218, 37, 50, 0.028) 29px
  );
  pointer-events: none;
}

.company-tokyo-bg {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100%;
  pointer-events: none;
  opacity: 0.12;
  line-height: 0;
}

.company-tokyo-bg img {
  width: 100%;
  height: auto;
  display: block;
}

.company-card {
  position: relative;
  background: var(--color-white);
  box-shadow:
    0 4px 48px rgba(0, 0, 0, 0.09),
    0 1px 0 rgba(218, 37, 50, 0.08);
  width: 1040px;
  margin: 0 auto;
  padding: 72px 80px 80px;
  border-top: 5px solid var(--color-red-mid);
  overflow: hidden;
}

.company-header-block {
  text-align: center;
  margin-bottom: 52px;
}

.company-label-en {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--color-red-mid);
  margin-bottom: 14px;
}

.company-heading {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--color-dark2);
  line-height: 1.4;
  margin-bottom: 18px;
}

.company-accent-line {
  display: block;
  width: 40px;
  height: 2px;
  background: var(--color-red-mid);
  margin: 0 auto;
}

.company-table {
  border: none;
  overflow: hidden;
}

.company-table-tokyo {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100%;
  pointer-events: none;
  opacity: 0.12;
  line-height: 0;
  z-index: 0;
}

.company-table-tokyo img {
  width: 100%;
  height: auto;
  display: block;
}

.company-row {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: 62px;
  height: auto;
  border-bottom: 1px solid #ebebeb;
  background: transparent;
  transition: background 0.18s;
}

.company-row:hover {
  background: #fff7f7;
}

.company-row--tall {
  min-height: 80px;
}

.company-row--last {
  border-bottom: none;
}

.company-cell-header {
  width: 168px;
  flex-shrink: 0;
  background: #fafafa;
  color: var(--color-dark2);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 16px 20px;
  border-left: 3px solid var(--color-red-mid);
  border-bottom: 1px solid #ebebeb;
  line-height: 1.5;
}

.company-row--last .company-cell-header {
  border-bottom: none;
}

.company-cell-body {
  flex: 1;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.8px;
  color: var(--color-dark2);
  line-height: 1.6;
}

.company-business-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.company-business-list li {
  padding-left: 14px;
  position: relative;
  line-height: 1.6;
}

.company-business-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 5px;
  height: 1px;
  background: var(--color-red);
}

.company-cell-body a {
  color: var(--color-red-mid);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 1px solid rgba(202, 31, 43, 0.3);
  padding-bottom: 1px;
  transition:
    border-color 0.2s,
    color 0.2s;
}

.company-cell-body a:hover {
  color: var(--color-red-dark);
  border-color: var(--color-red-dark);
}

.company-since {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: absolute;
  bottom: 32px;
  right: 40px;
  width: 76px;
  height: 76px;
  border: 2px solid rgba(218, 37, 50, 0.2);
  border-radius: 50%;
  text-align: center;
}

.company-since-label {
  display: block;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-red-mid);
  line-height: 1;
  margin-bottom: 3px;
}

.company-since-year {
  display: block;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-dark2);
  line-height: 1;
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  position: relative;
  background: #fff;
  height: 69.8px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.footer-wave {
  position: absolute;
  top: -79px;
  left: 0;
  width: 100%;
  height: 80px;
  overflow: hidden;
  pointer-events: none;
  z-index: 10;
}

.footer-wave-svg {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 200%;
  height: 100%;
}

.footer-wave-svg--1 {
  animation: wave-flow 10s linear infinite;
}

.footer-wave-svg--2 {
  opacity: 0.45;
  animation: wave-flow 14s linear infinite reverse;
}

@keyframes wave-flow {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

.footer-copy {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 3.2px;
  color: var(--color-dark2);
  line-height: 28.8px;
  text-align: center;
}

/* ============================================================
   Responsive - 1440px
   ============================================================ */
@media (max-width: 1440px) {
  .hero-heading-block {
    width: auto;
  }

  .hero-body {
    width: 480px;
  }
}

/* ============================================================
   Responsive - 1080px
   ============================================================ */
@media (max-width: 1080px) {
  .about-heading {
    font-size: 32px;
    letter-spacing: 3px;
  }

  .about-heading-em {
    font-size: 38px;
  }
}

/* ============================================================
   Responsive - 1024px (Tablet Portrait: Hamburger)
   ============================================================ */
@media (max-width: 1024px) {
  .hamburger-btn {
    display: flex;
  }

  .header-nav {
    display: none;
  }

  .col-dropdown {
    display: none !important;
  }
}

/* ============================================================
   Responsive - 680px
   ============================================================ */
@media (max-width: 680px) {
  .about-heading br {
    display: none;
  }
}

/* ============================================================
   Responsive - 768px (Tablet)
   ============================================================ */
@media (max-width: 768px) {
  .site-header {
    height: 60px;
  }

  .site-header::before {
    top: 5px;
    bottom: 5px;
  }

  body.is-inner-page {
    padding-top: 60px;
  }

  .header-inner {
    margin: 0 auto;
    height: 60px;
    padding: 0 20px;
  }

  .logo-name {
    height: 28px;
  }

  .logo-sub {
    font-size: 12px;
  }

  .header-nav {
    display: none;
  }

  .mobile-nav {
    left: 16px;
    right: 16px;
    max-height: calc(100dvh - 60px);
  }

  .mobile-nav.is-open {
    transform: translateY(20px);
  }

  /* Hero */
  .hero-section {
    height: auto;
    min-height: 600px;
  }

  .hero-person {
    display: none;
  }

  .hero-content {
    position: relative;
    left: auto;
    top: auto;
    width: 100%;
    padding: 100px 24px 60px;
  }

  .hero-heading-block {
    width: 100%;
  }

  .hero-title-bg--wide,
  .hero-title-bg--narrow {
    width: 100%;
  }

  .hero-title-text {
    font-size: 28px;
    letter-spacing: 2px;
    line-height: 48px;
    padding: 0 16px;
  }

  .hero-body {
    max-width: 100%;
  }

  /* Hero */
  .hero-en-row {
    width: 100%;
  }


.about-content {
    padding: 60px 24px 0;
  }

  .about-hub-card {
    flex-direction: column;
    gap: 20px;
    padding: 24px;
  }

  .about-hub-text {
    font-size: 14px;
  }

  .about-heading {
    font-size: 20px;
    letter-spacing: 1px;
  }

  .about-heading-em {
    font-size: 24px;
  }


  /* Businesses */
  .businesses-section {
    padding: 0;
  }

  .businesses-inner {
    padding: 60px 24px 0;
  }

  .section-heading {
    font-size: 22px;
    letter-spacing: 2px;
  }

  .businesses-title-ja {
    font-size: 19px;
  }

  .service-mini-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 40px;
  }

  .service-mini-title {
    font-size: 14px;
  }

  .service-col-thumb {
    width: 36px;
    height: 36px;
  }

  .service-col-text {
    font-size: 10px;
  }

  .businesses-list {
    flex-direction: column;
    gap: 24px;
    padding: 0;
  }

  .business-card {
    max-width: 100%;
  }

  .business-card-title {
    font-size: 40px;
  }

  .business-card-body {
    padding: 24px 24px;
  }

  /* Responsibilities */
  .sec-ai-solutions {
    padding: 60px 0 40px;
  }

  .resp-bubble-br {
    display: none;
  }

  .resp-header-row {
    padding: 0 24px;
  }

  .resp-item-title {
    font-size: 20px;
    letter-spacing: 1.6px;
    line-height: 1.5;
    margin-bottom: 12px;
  }

  .resp-title-mask {
    flex-shrink: 1;
  }

  .resp-title-en {
    font-size: 30px;
    letter-spacing: 2px;
    line-height: 1.25;
  }

  .resp-title-ja {
    font-size: 18px;
    padding: 0 24px;
  }

  .resp-item {
    flex-direction: column !important;
    margin-bottom: 40px;
  }

  .resp-item-img {
    width: 100%;
    height: 240px;
    margin-left: 0 !important;
    margin-right: 0 !important;
  }

  .resp-item-content {
    padding: 24px 24px 0;
  }

  .resp-item-num {
    display: none;
  }

  /* FAQ */
  .sec-three-solutions {
    padding: 60px 0 60px;
  }

  .faq-inner {
    padding: 0 24px;
  }

  .faq-title-en {
    font-size: 34px;
  }

  .faq-q-text {
    font-size: 14px;
  }

  .faq-a-text {
    font-size: 14px;
  }

  /* Company */
  .company-card {
    width: 100%;
    padding: 52px 24px 72px;
  }

  .company-header-block {
    margin-bottom: 36px;
  }

  .company-heading {
    font-size: 22px;
    letter-spacing: 2.5px;
  }

  .company-row {
    min-height: 52px;
  }

  .company-row--tall {
    min-height: 64px;
  }

  .company-cell-header {
    width: 96px;
    font-size: 11px;
    padding: 10px 10px;
    letter-spacing: 1px;
  }

  .company-cell-body {
    font-size: 13px;
    padding: 10px 14px;
    letter-spacing: 0.5px;
  }

  .company-since {
    width: 60px;
    height: 60px;
    bottom: 20px;
    right: 20px;
  }

  .company-since-year {
    font-size: 13px;
  }

  /* sec-three-cards */
  .sec-three-cards {
    padding: 0 24px 20px;
  }

  .st-card {
    grid-template-columns: 1fr 1fr;
  }

  .st-card-left {
    padding: 40px 30px;
    gap: 14px;
  }

  .st-card-right {
    padding: 28px 20px;
  }

}

/* ============================================================
   sec-three-solutions Cards
   ============================================================ */
.sec-three-cards {
  max-width: 1080px;
  margin: 56px auto 0;
  padding: 0 40px 20px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.st-card {
  background: #ffffff;
  border-radius: 16px 0 16px 0;
  display: grid;
  grid-template-columns: 60% 40%;
  overflow: hidden;
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.st-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.st-card--reverse {
  grid-template-columns: 40% 60%;
}
.st-card--reverse .st-card-left  { order: 2; }
.st-card--reverse .st-card-right { order: 1; }

.st-card-left {
  padding: 52px 48px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.st-card-eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--color-red);
  text-transform: uppercase;
}

.st-card-title {
  font-size: clamp(17px, 1.6vw, 20px);
  font-weight: 800;
  color: #0A1628;
  line-height: 1.4;
}

.st-card-desc {
  font-size: 15px;
  color: rgba(0, 0, 0, 0.85);
  line-height: 1.75;
}

.st-card-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 4px;
}

.st-card-list li {
  display: flex;
  gap: 10px;
  font-size: 14px;
  color: rgba(0, 0, 0, 0.85);
  line-height: 1.6;
}

.st-card-list li::before {
  content: '';
  flex-shrink: 0;
  width: 17px;
  height: 17px;
  margin-top: 2px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 17 17'%3E%3Cpath d='M2 9l4.5 4.5 9-9' stroke='%23e85580' stroke-width='2' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
}

.st-card-right {
  background: #dde4ec;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 36px 32px;
}

/* Mock UI Panel */
.st-panel {
  width: 100%;
  background: #0c1a2e;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.st-panel-header {
  background: #0f2035;
  padding: 9px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.st-panel-dots {
  display: flex;
  gap: 5px;
}

.st-panel-dots span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.st-panel-dots span:nth-child(1) { background: #ff5f57; }
.st-panel-dots span:nth-child(2) { background: #febc2e; }
.st-panel-dots span:nth-child(3) { background: #28c840; }

.st-panel-title {
  font-size: 11px;
  color: #ffffff;
  font-family: 'Courier New', monospace;
  letter-spacing: 0.04em;
}

.st-panel-body {
  padding: 20px 18px;
}

.st-panel-section-label {
  font-size: 10px;
  color: #ffffff;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

/* Stats (Card 1) */
.st-panel-stats {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
}

.st-panel-stat {
  flex: 1;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 6px;
  padding: 12px 8px;
  text-align: center;
}

.st-panel-stat-num {
  display: block;
  font-size: 24px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.02em;
}

.st-panel-stat-label {
  display: block;
  font-size: 10px;
  color: #ffffff;
  margin-top: 2px;
}

/* Risk bars (Card 1) */
.st-panel-bars {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.st-panel-bar-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.st-panel-bar-name {
  font-size: 11px;
  color: #ffffff;
  width: 52px;
  flex-shrink: 0;
}

.st-panel-bar-track {
  flex: 1;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 99px;
  height: 6px;
  overflow: hidden;
}

.st-panel-bar {
  height: 100%;
  border-radius: 99px;
  transition: width 1s ease-out;
}

/* Agent table (Card 2) */
.st-panel-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 14px;
}

.st-panel-table th {
  font-size: 9.5px;
  color: #ffffff;
  text-align: left;
  padding: 0 0 7px;
  letter-spacing: 0.1em;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.st-panel-table td {
  font-size: 11px;
  color: #ffffff;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  vertical-align: middle;
}

.st-panel-td-count {
  text-align: right;
  font-size: 10px;
  color: #ffffff;
}

.st-panel-td-count--alert {
  color: #e85580;
}

.st-panel-status {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 99px;
  font-weight: 600;
}

.st-panel-status--active {
  background: rgba(40, 200, 64, 0.15);
  color: #28c840;
}

.st-panel-status--blocked {
  background: rgba(232, 85, 122, 0.15);
  color: #e85580;
  animation: warn-blink 2s ease-in-out infinite;
}

.st-panel-events {
  display: flex;
  flex-direction: column;
}

.st-panel-event {
  display: flex;
  gap: 8px;
  padding: 7px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 10.5px;
  color: #ffffff;
  line-height: 1.5;
}

.st-panel-event:last-child {
  border-bottom: none;
}

.st-panel-event-icon {
  flex-shrink: 0;
  width: 14px;
  margin-top: 1px;
}

.st-panel-event-icon--warn {
  color: #e85580;
  animation: warn-blink 2s ease-in-out infinite;
}
.st-panel-event-icon--ok   { color: #28c840; }

@keyframes warn-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.15; }
}

/* Scan panel (Card 3) */
.st-panel-scan-count {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 16px;
}

.st-panel-scan-num {
  font-size: 34px;
  font-weight: 700;
  color: #e85580;
  line-height: 1;
}

.st-panel-scan-sub {
  font-size: 11px;
  color: #ffffff;
}

.st-panel-severity {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.st-panel-sev-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.st-panel-sev-label {
  font-size: 10px;
  color: #ffffff;
  width: 50px;
  flex-shrink: 0;
}

.st-panel-sev-bar {
  height: 7px;
  border-radius: 99px;
}

.st-panel-sev-count {
  font-size: 10px;
  color: #ffffff;
  margin-left: 2px;
}

.st-panel-scan-complete {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  background: rgba(40, 200, 64, 0.08);
  border: 1px solid rgba(40, 200, 64, 0.18);
  border-radius: 6px;
}

.st-panel-scan-complete-icon {
  color: #28c840;
  font-size: 13px;
  flex-shrink: 0;
}

.st-panel-scan-complete-text {
  font-size: 11px;
  color: #ffffff;
}

/* Attack simulation rows (Card 3) */
.st-panel-attack-rows {
  display: flex;
  flex-direction: column;
  margin-bottom: 14px;
}

.st-panel-attack-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.st-panel-attack-name {
  font-size: 11px;
  color: #ffffff;
}

/* Alert box (red) */
.st-panel-alert {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  background: rgba(232, 85, 122, 0.08);
  border: 1px solid rgba(232, 85, 122, 0.2);
  border-radius: 6px;
  animation: warn-blink 2s ease-in-out infinite;
}

.st-panel-alert-icon {
  color: #e85580;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}

.st-panel-alert-text {
  font-size: 11px;
  color: #e85580;
}

/* ============================================================
   Responsive - 480px (Mobile)
   ============================================================ */
@media (max-width: 480px) {
  .about-section {
    background: linear-gradient(to bottom,
      rgba(255,255,255,0) 0px,
      rgba(255,255,255,0) 40px,
      #ffffff 220px
    );
  }

  .sec-three-cards {
    padding-left: 8px;
    padding-right: 8px;
  }

  .about-hub-icon-kanji img {
    margin: 0 auto;
  }

  .service-mini-cards {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .service-mini-card {
    padding: 16px;
  }

  .hero-title-text {
    font-size: 22px;
    letter-spacing: 1px;
    line-height: 40px;
  }

  .section-heading {
    font-size: 19px;
  }

  .about-heading {
    font-size: 17px;
    letter-spacing: 0;
  }

  .about-heading-em {
    font-size: 20px;
  }

  .resp-title-en {
    font-size: clamp(22px, 6.5vw, 32px);
    letter-spacing: 1px;
    line-height: 1.25;
  }

  .flow-step {
    width: 100%;
  }

  .company-cell-header {
    width: 80px;
    font-size: 10px;
    padding: 8px 8px;
  }

  /* sec-three-cards narrow */
  .st-card {
    grid-template-columns: 1fr;
  }

  .st-card-left {
    padding: 32px 22px;
    order: 2;
  }

  .st-card-right {
    padding: 24px 18px;
    order: 1;
  }

}

/* =============================================
   Exposure Management Section
   ============================================= */
.sec-exposure {
  background: #ffffff;
  padding: 100px 0 100px;
  text-align: center;
  position: relative;
}

.sec-exposure-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 40px;
}

.sec-exposure-title {
  color: var(--color-dark2);
}

.sec-exposure-em {
  color: var(--color-dark2);
  transition: color 0.6s ease;
}

.sec-exposure-em.is-red {
  color: var(--color-red-mid);
}

.sec-exposure-lead {
  margin-top: 28px;
  line-height: 2;
  text-align: left;
}
.exp-hub-card {
  max-width: 1000px;
  margin: 32px max(40px, calc((100% - 1000px) / 2)) 0;
  align-items: flex-start;
}
.exp-hub-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
}
.exp-hub-title {
  font-size: 17px;
  font-weight: 900;
  color: var(--color-dark2);
  line-height: 1.6;
  transition: color 0.6s ease;
}
.exp-hub-title.is-red {
  color: var(--color-red-mid);
}
.exp-hub-desc {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-dark2);
  line-height: 1.9;
}

.exp-lead-em {
  color: inherit;
  background-image: linear-gradient(rgba(255, 235, 0, 0.55), rgba(255, 235, 0, 0.55));
  background-size: 0% 42%;
  background-repeat: no-repeat;
  background-position: left bottom;
  transition: color 0.6s ease 0.2s, background-size 0.7s ease 0.2s;
}
.exp-lead-em.is-marked {
  color: var(--color-red-mid);
  background-size: 100% 42%;
}

@media (max-width: 768px) {
  .sec-exposure {
    padding: 64px 0;
  }
  .sec-exposure-inner {
    padding: 0 24px;
  }

  /* exp-hub-card: アイコンをセンター揃え・左右余白追加 */
  .exp-hub-card {
    align-items: center;
    margin-left: 24px;
    margin-right: 24px;
  }

  /* sec-three-cards: 1列 + 上下並び替え */
  .st-card,
  .st-card--reverse {
    grid-template-columns: 1fr;
  }

  .st-card-left {
    order: 2;
  }

  .st-card-right {
    order: 1;
  }
}

/* =============================================
   Exposure Deco (right-side SVG animation)
   ============================================= */
.exp-deco {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 340px;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0) 0%, rgba(0,0,0,1) 5%, rgba(0,0,0,1) 90%, rgba(0,0,0,0) 100%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0) 0%, rgba(0,0,0,1) 5%, rgba(0,0,0,1) 90%, rgba(0,0,0,0) 100%);
}
.exp-deco svg {
  width: 100%;
  height: 100%;
  display: block;
}
.sec-exposure-inner,
.exp-hub-card,
.exp-cards {
  position: relative;
  z-index: 1;
}
@media (max-width: 1200px) {
  .exp-deco { width: 240px; opacity: 0.65; }
}
@media (max-width: 960px) {
  .exp-deco { display: none; }
}

/* =============================================
   CTA Section
   ============================================= */
.sec-cta {
  position: relative;
  padding: 100px 40px;
  text-align: center;
  overflow: hidden;
}

.sec-cta-parallax-img {
  width: 100%;
  height: 133.33%;
  object-fit: cover;
  position: absolute;
  top: -16.67%;
  left: 0;
  max-width: none;
  pointer-events: none;
}

.sec-cta-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(255,255,255,1) 0%, rgba(255,255,255,0.30) 100%);
  pointer-events: none;
}

.sec-cta-inner {
  position: relative;
  max-width: 814px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.sec-cta-form {
  width: 100%;
  overflow: hidden;
}

.sec-cta-form iframe {
  display: block;
  width: 100%;
  max-width: 814px;
  margin: 0 auto;
  border: none;
  height: 650px;
  overflow: hidden;
}

@media (max-width: 768px) {
  .sec-cta-form iframe {
    height: 700px;
  }
}

.sec-cta-eyebrow {
  display: inline-block;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #0a1628;
  border: 1px solid rgba(10, 22, 40, 0.6);
  padding: 8px 28px;
  border-radius: 2px;
}

.sec-cta-title {
  font-size: clamp(24px, 3vw, 38px);
  font-weight: 800;
  color: #0a1628;
  line-height: 1.45;
}

.sec-cta-em {
  color: var(--color-red);
}

.sec-cta-lead {
  font-size: 15px;
  color: rgba(10, 22, 40, 0.75);
  line-height: 1.9;
}

.sec-cta-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 8px;
}

.sec-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 36px;
  border-radius: 14px 0 14px 0;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.2s;
}

.sec-cta-btn:hover {
  opacity: 0.85;
  transform: translateY(-2px);
}

.sec-cta-btn--primary {
  background: var(--color-red);
  color: #ffffff;
}

.sec-cta-btn--primary svg {
  transition: none;
}

.sec-cta-btn--primary:hover svg {
  animation: arrow-loop 1.6s ease-in-out infinite;
}

@keyframes arrow-loop {
  0%   { transform: translateX(0);    opacity: 1; }
  45%  { transform: translateX(10px); opacity: 0; }
  46%  { transform: translateX(-8px); opacity: 0; }
  100% { transform: translateX(0);    opacity: 1; }
}

.sec-cta-btn--secondary {
  background: transparent;
  color: #ffffff;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
}

.sec-cta-btn--secondary:hover {
  border-color: rgba(255, 255, 255, 0.8);
}

.sec-cta-note {
  font-size: 12px;
  color: rgba(10, 22, 40, 0.75);
}

@media (max-width: 600px) {
  .sec-cta {
    padding: 72px 24px;
  }
  .sec-cta-btn {
    width: 100%;
    justify-content: center;
  }
}

/* =============================================
   Back to Top
   ============================================= */
.back-to-top {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 100%;
  padding: 20px;
  background: #0a1628;
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}

.back-to-top:hover {
  background: #152340;
  color: #ffffff;
}

.back-to-top:hover svg {
  animation: arrow-up-loop 1.6s ease-in-out infinite;
}

@keyframes arrow-up-loop {
  0%   { transform: translateY(0);     opacity: 1; }
  45%  { transform: translateY(-10px); opacity: 0; }
  46%  { transform: translateY(8px);   opacity: 0; }
  100% { transform: translateY(0);     opacity: 1; }
}

/* ============================================================
   Responsive - 390px (iPhone SE2 / 小型スマホ)
   ============================================================ */
@media (max-width: 390px) {
  /* セクション共通タイトル */
  .about-heading       { font-size: 15px; }
  .about-heading-em    { font-size: 17px; }
  .section-heading     { font-size: 16px; }
  .businesses-title-ja { font-size: 14px; }
  .sec-intro-title     { font-size: 14px; }
  .resp-title-en       { font-size: 20px; }
  .resp-title-ja       { font-size: 14px; }
  .faq-title-en        { font-size: 26px; }
  .company-heading     { font-size: 17px; }
  .resp-bubble span    { font-size: 15px; }
}