/* =================
  共通
================= */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN";
}

a {
  text-decoration: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

@keyframes fadeUp{
  0%{
  opacity:0;
  transform:translateY(40px);
  }
  100%{
  opacity:0.9;
  transform:translateY(0);
  }
}

@keyframes fadeIn{
  0%{ opacity:0; }
  100%{ opacity:0.7; }
}

/* アニメーション共通 */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: 1s;
}

.fade-up.show {
  opacity: 1;
  transform: translateY(0);
}

/* セクション区切り */
.section-divider {
  width: 100%;
  background: #fff;
  padding: 120px 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.section-divider-line {
  display: block;
  width: 85%;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent 0%,
    rgba(0, 0, 0, 0.08) 15%,
    rgba(0, 0, 0, 0.22) 50%,
    rgba(0, 0, 0, 0.08) 85%,
    transparent 100%
  );
}

/* common button */
.common-btn {
  margin-top: 60px;
  display: flex;
  justify-content: center;
}

.common-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-width: 240px;
  padding: 16px 32px;
  border: 2px solid #1a191a;
  border-radius: 4px;
  font-size: 16px;
  font-weight: 500;
  color: #1a191a;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: color 0.4s ease, border-color 0.4s ease;
  background: transparent;
}

.common-link::before {
  content: "";
  position: absolute;
  inset: 0;
  width: 0;
  background: #1a191a;
  transition: width 0.4s ease;
  z-index: 0;
}

.common-link span {
  position: relative;
  z-index: 1;
}

.common-link:hover {
  color: #fff;
}

.common-link:hover::before {
  width: 100%;
}

.common-arrow {
  display: inline-block;
  transition: transform 0.3s ease;
}

.common-link:hover .common-arrow {
  transform: translateX(6px);
}

/* =================
  header
================= */

.header {
  height: 75px;
  background: #131313;
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  transition: transform 0.3s;
}

.header .container {
  max-width: 1400px;
}

.header.hide {
  transform: translateY(-100%);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.header-logo img {
  height: 75px;
}

/* ナビ */
.header-nav {
  display: flex;
  align-items: center;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 75px;
  padding: 0 18px;
  color: #fff;
  position: relative;
}

.nav-en {
  font-size: 15px;
  letter-spacing: 1px;
}

.nav-ja {
  font-size: 10px;
  opacity: 0.7;
  margin-top: 2px;
}

/* ホバー線 */
.nav-item::after {
  content: "";
  position: absolute;
  bottom: 8px;
  left: 50%;
  width: 0;
  height: 2px;
  background: #fff;
  transform: translateX(-50%);
  transition: 0.3s;
}

.nav-item:hover::after {
  width: 60%;
}

.nav-item:hover {
  background-color: rgba(255, 255, 255, 0.264);
}

/* お問い合わせボタン */
.contact-btn {
  margin-left: 15px;
  padding: 8px 24px;
  background: #fff;
  color: #000;
  border-radius: 3px;
  font-weight: bold;
  position: relative;
  overflow: hidden;
}

.contact-btn::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 100%;
  background: #000;
  transition: 0.3s;
  z-index: 0;
}

.contact-btn span {
  position: relative;
  z-index: 1;
}

.contact-btn:hover {
  color: #fff;
}

.contact-btn:hover::before {
  width: 100%;
}

.hamburger {
  display: none;
  width: 30px;
  height: 22px;
  position: relative;
  cursor: pointer;
  z-index: 1000;
}

.hamburger span {
  position: absolute;
  width: 100%;
  height: 2px;
  background: #fff;
  left: 0;
  transition: 0.3s;
}

.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 10px; }
.hamburger span:nth-child(3) { top: 20px; }

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg);
  top: 10px;
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg);
  top: 10px;
}

/* =================
   共通
================= */

.section-title {
  display: block;
  font-size: 70px;
  letter-spacing: 2px;
  color: #888;
  text-align: left;
  margin-bottom: 50px;
  line-height: 1.1;
}

.section-title span {
  display: block;
  font-size: 22px;
  color: #888;
  margin-top: 18px;
  position: relative;
  padding-top: 18px;
}

.section-title span::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 80px;
  height: 2px;
  background: #c32d2d;
}

.scroll{
  position:absolute;
  bottom:115px;
  left:50%;
  transform:translateX(-50%);
  text-align:center;
  font-size:14px;
  letter-spacing:2px;
  opacity:0.7;
  animation:fadeIn 2s ease forwards;
  animation-delay:1.5s;
  text-shadow:0 0 10px rgba(0,0,0,0.8);
}

.scroll-line{
  width:2px;
  height:40px;
  background:rgba(255,255,255,0.3);
  margin:10px auto 0;
  position:relative;
  overflow:hidden;
}

.scroll-line::after{
  content:"";
  position:absolute;
  top:-40px;
  left:0;
  width:100%;
  height:40px;
  background:white;
  animation:scrollMove 1.6s infinite;
}

@keyframes scrollMove{
  0%{
  transform:translateY(-20px);
  opacity:0;
  }
  50%{
  opacity:1;
  }
  100%{
  transform:translateY(50px);
  opacity:0;
  }
}

/* page-hero */

.page-hero{
  padding:220px 0 220px;
  background:
  linear-gradient(
    100deg,
    rgba(10,10,10,1) 0%,
    rgba(15,15,15,0.9) 35%,
    rgba(30,30,30,0.6) 60%,
    rgba(0,0,0,0) 100%
  ),
  url("../images/service_hero.webp");
  background-size:cover;
  background-position:center;
  text-align:center;
  color:white;
}

.page-hero h1{
  font-size:48px;
  letter-spacing:6px;
}

.page-hero p{
  font-size:18px;
  margin-top:10px;
}

/* =================
   intro
================= */

.intro {
  padding: 110px 0 100px;
  background: #fff;
}

.intro-heading {
  margin-bottom: 50px;
}

.intro-wrapper {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 50px;
}

.intro-text {
  width: 48%;
}

.intro-lead {
  font-size: 32px;
  line-height: 1.6;
  font-weight: 600;
  color: #222;
  margin: 0 0 30px;
}

.intro-text p {
  font-size: 15px;
  line-height: 2;
  color: #555;
  margin: 0 0 18px;
}

.intro-points {
  margin-top: 35px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.intro-point {
  background: #f8f8f8;
  border: 1px solid #e8e8e8;
  padding: 20px 18px;
  border-radius: 6px;
}

.intro-point-title {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  color: #222;
  margin-bottom: 10px;
  position: relative;
  padding-left: 14px;
}

.intro-point-title::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 6px;
  height: 6px;
  background: #c32d2d;
  border-radius: 50%;
  transform: translateY(-50%);
}

.intro-point p {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: #666;
}

.intro-flow {
  width: 48%;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 10px;
  padding: 30px;
  background: #fafafa;
  border: 1px solid #ececec;
  border-radius: 8px;
}

.intro-flow-box {
  background: #fff;
  border: 1px solid #e5e5e5;
  border-radius: 6px;
  min-height: 92px;
  flex: 1 1 calc(33.333% - 14px);
  min-width: 140px;
  padding: 16px 14px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.04);
}

.intro-flow-step {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  color: #c32d2d;
  margin-bottom: 10px;
}

.intro-flow-box p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: #222;
  font-weight: 600;
}

.intro-flow-box p span {
  display: inline-block;
  margin-top: 2px;
  font-size: 12px;
  color: #777;
  font-weight: 500;
}

.intro-flow-arrow {
  flex: 0 0 auto;
  font-size: 18px;
  color: #999;
  font-weight: 400;
}

/* =================
   strengths
================= */
.strengths {
  padding: 110px 0 100px;
  background: #f9f9f9;
}

.strengths-heading {
  margin-bottom: 50px;
}

.strengths-wrapper {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.strength-card {
  background: #fff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 32px 28px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.strength-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.strength-number {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
  color: #c32d2d;
  margin-bottom: 18px;
}

.strength-card h3 {
  font-size: 26px;
  line-height: 1.4;
  color: #222;
  margin: 0 0 18px;
  font-weight: 700;
}

.strength-card p {
  font-size: 15px;
  line-height: 2;
  color: #666;
  margin: 0;
}

/* =================
   flow
================= */
.flow {
  padding: 110px 0 100px;
  background: #fff;
  overflow: hidden;
}

.flow-heading {
  margin-bottom: 50px;
}

.flow-lead {
  font-size: 17px;
  line-height: 2;
  color: #555;
  margin: 20px 0 0;
  max-width: 720px;
}

.flow-wrapper {
  display: flex;
  gap: 22px;
  overflow-x: auto;
  padding: 0 10px 12px 0;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.flow-wrapper::-webkit-scrollbar {
  height: 8px;
}

.flow-wrapper::-webkit-scrollbar-thumb {
  background: #cfcfcf;
  border-radius: 999px;
}

.flow-wrapper::-webkit-scrollbar-track {
  background: #f3f3f3;
  border-radius: 999px;
}

.flow-item {
  min-width: 300px;
  flex-shrink: 0;
  scroll-snap-align: start;
}

.flow-step {
  background: #888;
  color: #fff;
  padding: 12px 18px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  text-align: center;
  position: relative;
  border-radius: 6px 6px 0 0;
}

.flow-step::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -18px;
  transform: translateY(-50%);
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  border-left: 12px solid #888;
}

.flow-item:last-child .flow-step::after {
  display: none;
}

.flow-card {
  background: #fff;
  border: 1px solid #e7e7e7;
  border-top: none;
  border-radius: 0 0 8px 8px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.flow-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.08);
}

.flow-card img {
  width: 100%;
  height: 210px;
  object-fit: cover;
  display: block;
  background: #f2f2f2;
}

.flow-card h3 {
  font-size: 22px;
  line-height: 1.5;
  color: #222;
  margin: 0;
  padding: 22px 20px 14px;
}

.flow-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 20px 22px;
}

.flow-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 6px 12px;
  font-size: 12px;
  line-height: 1.4;
  color: #555;
  background: #f5f5f5;
  border: 1px solid #e3e3e3;
  border-radius: 999px;
  white-space: nowrap;
}

/* stepごとの色差 */
.flow-item:nth-child(1) .flow-step {
  background: #a3a3a3;
}
.flow-item:nth-child(1) .flow-step::after {
  border-left-color: #a3a3a3;
}

.flow-item:nth-child(2) .flow-step {
  background: #969696;
}
.flow-item:nth-child(2) .flow-step::after {
  border-left-color: #969696;
}

.flow-item:nth-child(3) .flow-step {
  background: #898989;
}
.flow-item:nth-child(3) .flow-step::after {
  border-left-color: #898989;
}

.flow-item:nth-child(4) .flow-step {
  background: #7c7c7c;
}
.flow-item:nth-child(4) .flow-step::after {
  border-left-color: #7c7c7c;
}

.flow-item:nth-child(5) .flow-step {
  background: #6f6f6f;
}
.flow-item:nth-child(5) .flow-step::after {
  border-left-color: #6f6f6f;
}

.flow-item:nth-child(6) .flow-step {
  background: #626262;
}
.flow-item:nth-child(6) .flow-step::after {
  border-left-color: #626262;
}

/* =================
   capability
================= */
.capability {
  padding: 110px 0 100px;
  background: #f9f9f9;
}

.capability-heading {
  margin-bottom: 50px;
}

.capability-lead {
  font-size: 17px;
  line-height: 2;
  color: #555;
  margin: 20px 0 0;
  max-width: 720px;
}

.capability-wrapper {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.capability-card {
  background: #fff;
  border: 1px solid #e8e8e8;
  border-radius: 10px;
  padding: 28px 24px 28px;
  text-align: left;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.capability-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.capability-icon {
  width: 128px;
  height: 128px;
  margin-bottom: 20px;
  background: #fff;
  border: 1px solid #e5e5e5;
  border-radius: 50%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

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

.capability-card h3 {
  font-size: 24px;
  line-height: 1.5;
  color: #222;
  margin: 0 0 12px;
  font-weight: 700;
}

.capability-card p {
  font-size: 14px;
  line-height: 1.9;
  color: #666;
  margin: 0;
}

/* =================
  equipment
================= */

.equipment-block {
  margin-top: 80px;
}

.equipment-lead {
  max-width: 800px;
  margin: 0 auto 32px;
  font-size: 16px;
  line-height: 2;
  color: #333;
  text-align: center;
}

.equipment-accordion {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.equipment-item {
  border: 1px solid #dcdcdc;
  background: #fff;
  overflow: hidden;
}

.equipment-toggle,
.equipment-subtoggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 28px;
  border: none;
  background: #fff;
  color: #111;
  font-size: 18px;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.equipment-item.active > .equipment-toggle,
.equipment-subitem.active > .equipment-subtoggle {
  background: #fcfcfc;
}

.equipment-toggle:hover,
.equipment-subtoggle:hover {
  background: #f8f8f8;
}

.equipment-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  font-size: 24px;
  font-weight: 400;
  line-height: 1;
  transition: transform 0.3s ease;
}

.equipment-item.active > .equipment-toggle .equipment-icon,
.equipment-subitem.active > .equipment-subtoggle .equipment-icon {
  transform: rotate(45deg);
}

.equipment-content,
.equipment-subcontent {
  display: none;
  background: #fff;
}

.equipment-item.active > .equipment-content,
.equipment-subitem.active > .equipment-subcontent {
  display: block;
}

.equipment-content {
  border-top: 1px solid #e7e7e7;
}

.equipment-subitem + .equipment-subitem {
  border-top: 1px solid #ececec;
}

.equipment-subtoggle {
  padding-left: 50px;
  font-size: 16px;
  background: #fcfcfc;
}

.equipment-subtoggle:hover {
  background: #f4f4f4;
}

.equipment-subcontent {
  padding-bottom: 1px;
  background: #fff;
}

.equipment-table-wrap {
  padding: 0 28px 32px;
}

.equipment-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.equipment-table th,
.equipment-table td {
  padding: 16px 18px;
  border-bottom: 1px solid #e9e9e9;
  vertical-align: top;
  font-size: 15px;
  line-height: 1.8;
  text-align: left;
}

.equipment-table th {
  width: 32%;
  background: #fafafa;
  color: #111;
  font-weight: 600;
}

.equipment-table td {
  width: 68%;
  color: #333;
  background: #fff;
}

.equipment-table tr:first-child th,
.equipment-table tr:first-child td {
  border-top: 1px solid #e9e9e9;
}

.equipment-item.active .equipment-icon,
.equipment-subitem.active .equipment-icon {
  transform: rotate(180deg);
}

.equipment-content,
.equipment-subcontent {
  display: none;
  background: #fff;
}

.equipment-item.active > .equipment-content,
.equipment-subitem.active > .equipment-subcontent {
  display: block;
}

.equipment-icon {
  transition: transform 0.25s ease;
}

/* 開いたときの中身アニメーション */
.equipment-content-inner,
.equipment-subcontent-inner {
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.equipment-item.active > .equipment-content > .equipment-content-inner,
.equipment-subitem.active > .equipment-subcontent > .equipment-subcontent-inner {
  opacity: 1;
  transform: translateY(0);
}

/* =================
   quality link
================= */
.quality-link {
  padding: 110px 0 100px;
  background: #fff;
}

.quality-link-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
}

.quality-link-text {
  width: 52%;
}

.quality-link-lead {
  font-size: 17px;
  line-height: 2;
  color: #555;
  margin: 22px 0 14px;
}

.quality-link-description {
  font-size: 15px;
  line-height: 2;
  color: #666;
  margin: 0 0 28px;
}

.quality-link-btn {
  display: inline-block;
  padding: 14px 28px;
  background: #000;
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 1px;
  transition: 0.3s ease;
}

.quality-link-btn:hover {
  background: #333;
}

.quality-link-image {
  width: 42%;
}

.quality-link-image img {
  width: 100%;
  height: 450px;
  object-fit: cover;
  border-radius: 15px;
  display: block;
}

/* =================
   cta
================= */
.cta {
  padding: 110px 0 110px;
  background: #f5f5f5;
  text-align: center;
}

.cta-inner {
  max-width: 720px;
  margin: 0 auto;
}

.cta-lead {
  font-size: 18px;
  line-height: 2;
  color: #333;
  margin: 28px 0 10px;
}

.cta-description {
  font-size: 15px;
  line-height: 2;
  color: #666;
  margin-bottom: 40px;
}

.cta-btn {
  display: inline-block;
  padding: 16px 36px;
  background: #000;
  color: #fff;
  text-decoration: none;
  font-size: 15px;
  letter-spacing: 1px;
  transition: 0.3s ease;
}

.cta-btn:hover {
  background: #333;
}



/* page-top */

.page-top{
position:fixed;
right:30px;
bottom:30px;
width:50px;
height:50px;
background:#000;
color:#fff;
display:flex;
align-items:center;
justify-content:center;
text-decoration:none;
font-size:20px;
border-radius:50%;
opacity:0;
visibility:hidden;
transition:0.3s;
z-index:1000;
}

.page-top.show{
opacity:1;
visibility:visible;
}

.page-top:hover{
background:#333;
}

html{
scroll-behavior:smooth;
}

/* =================
  footer
================= */
.footer {
  background: #191919;
  border-top: 1px solid #333;
  padding: 30px 0 20px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
}

.footer-left {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.footer-logo {
  display: inline-block;
}

.footer-logo img {
  height: 60px;
  display: block;
}

.footer-left p {
  margin-top: 10px;
  font-size: 12px;
  color: #ccc;
  line-height: 1.7;
}

.footer-nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.footer-nav a {
  color: #ccc;
  font-size: 13px;
  position: relative;
  padding-right: 15px;
  line-height: 1.8;
}

.footer-nav a:not(:last-child)::after {
  content: "|";
  position: absolute;
  right: 0;
  color: #777;
}

.footer-nav a:hover {
  color: #fff;
}