@charset "UTF-8";

/* ========================================
   CSS Variables
======================================== */
:root {
  --color-blue: #5BA4CF;
  --color-green: #6DC4A0;
  --color-blue-dark: #4A8DB5;
  --color-green-dark: #5AAF8C;
  --color-blue-light: #EAF4FB;
  --color-green-light: #E6F6F0;
  --gradient-main: linear-gradient(135deg, #5BA4CF 0%, #6DC4A0 100%);
  --gradient-main-dark: linear-gradient(135deg, #4A8DB5 0%, #5AAF8C 100%);
  --gradient-light: linear-gradient(135deg, #EAF4FB 0%, #E6F6F0 100%);
  --color-white: #FFFFFF;
  --color-gray-bg: #F7F9FA;
  --color-text: #313131;
  --color-text-sub: #666666;
  --color-border: #E0E0E0;
  --color-dark: #2B2F33;
  --font-ja: 'Noto Sans JP', sans-serif;
  --font-en: 'Montserrat', sans-serif;
  --container-width: 1100px;
  --section-padding-pc: 100px;
  --section-padding-sp: 60px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-ja);
  font-size: 16px;
  color: var(--color-text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

ul,
ol {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  vertical-align: bottom;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input,
textarea,
select {
  font-family: inherit;
}

/* ========================================
   Common Components - Container
======================================== */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ========================================
   Common Components - Section
======================================== */
.section {
  padding: var(--section-padding-pc) 0;
}

.section--gray {
  background-color: var(--color-gray-bg);
  position: relative;
}

.section--gray::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 100%;
  height: 30px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 30' preserveAspectRatio='none'%3E%3Cpath d='M0,30 C480,0 960,0 1440,30 L1440,0 L0,0 Z' fill='%23ffffff'/%3E%3C/svg%3E") no-repeat top center;
  background-size: 100% 100%;
  z-index: 1;
}

.section--gray::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 30px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 30' preserveAspectRatio='none'%3E%3Cpath d='M0,0 C480,30 960,30 1440,0 L1440,30 L0,30 Z' fill='%23ffffff'/%3E%3C/svg%3E") no-repeat bottom center;
  background-size: 100% 100%;
  z-index: 1;
}

/* ========================================
   Common Components - Section Heading
======================================== */
.section-heading {
  text-align: center;
  margin-bottom: 60px;
}

.section-heading__en {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 40px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text);
  line-height: 1.2;
}

.section-heading__ja {
  font-size: 14px;
  color: var(--color-blue);
  margin-top: 10px;
  font-weight: 400;
}

.section-heading__en::after {
  content: "";
  display: block;
  width: 40px;
  height: 3px;
  background: var(--gradient-main);
  margin: 16px auto 0;
  border-radius: 2px;
}

/* ========================================
   Common Components - CTA Button (SWELL style)
======================================== */
.btn-cta {
  display: inline-flex;
  align-items: center;
  border: none;
  background: var(--gradient-main);
  color: var(--color-white);
  padding: 16px 42px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 50px;
  transition: all 0.3s ease;
  font-family: inherit;
  cursor: pointer;
  line-height: 1;
  box-shadow: 0 2px 8px rgba(91, 164, 207, 0.25);
  position: relative;
}

.btn-cta::after {
  content: "\2192";
  margin-left: 10px;
  transition: transform 0.3s ease;
}

.btn-cta:hover {
  background: var(--gradient-main-dark);
  color: var(--color-white);
  box-shadow: 0 4px 15px rgba(91, 164, 207, 0.35);
  transform: translateY(-2px);
}

.btn-cta:hover::after {
  transform: translateX(4px);
}

/* Outline variant */
.btn-cta-outline {
  background: transparent;
  border: 2px solid var(--color-blue);
  color: var(--color-blue);
  box-shadow: none;
}

.btn-cta-outline:hover {
  background: var(--gradient-main);
  border-color: transparent;
  color: var(--color-white);
  box-shadow: 0 4px 15px rgba(91, 164, 207, 0.35);
}

/* White variant (for dark/gradient backgrounds) */
.btn-cta-white {
  background: var(--color-white);
  color: var(--color-blue);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn-cta-white:hover {
  background: var(--color-white);
  color: var(--color-blue-dark);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
  transform: translateY(-2px);
}

/* ========================================
   Common Components - Card (SWELL style)
======================================== */
.card {
  background: var(--color-white);
  border: none;
  border-radius: 8px;
  padding: 30px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(91, 164, 207, 0.15);
}

/* ========================================
   Header
======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1100;
  background: var(--color-white);
  transition: box-shadow 0.3s ease;
}

.header.scrolled {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.header::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-main);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

.header-logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  font-family: var(--font-en);
  letter-spacing: 0.02em;
}

.header-logo a {
  display: flex;
  align-items: center;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.header-nav__link {
  font-size: 14px;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
  padding-bottom: 4px;
}

.header-nav__link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-main);
  transition: all 0.3s ease;
  transform: translateX(-50%);
  border-radius: 1px;
}

.header-nav__link:hover {
  color: var(--color-blue);
}

.header-nav__link:hover::after {
  width: 100%;
}

/* Hamburger */
.hamburger {
  display: none;
  width: 30px;
  height: 20px;
  position: relative;
  z-index: 10;
  cursor: pointer;
}

.hamburger__line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  position: absolute;
  left: 0;
  transition: all 0.3s ease;
}

.hamburger__line:nth-child(1) {
  top: 0;
}

.hamburger__line:nth-child(2) {
  top: 50%;
  transform: translateY(-50%);
}

.hamburger__line:nth-child(3) {
  bottom: 0;
}

/* Hamburger active state */
.hamburger.is-active .hamburger__line {
  background: var(--color-text);
}

.hamburger.is-active .hamburger__line:nth-child(1) {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

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

.hamburger.is-active .hamburger__line:nth-child(3) {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

/* SP Menu Overlay */
.sp-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  padding-top: 80px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 1050;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.sp-menu.is-open {
  opacity: 1;
  visibility: visible;
}

.sp-menu__list {
  text-align: center;
}

.sp-menu__item {
  margin-bottom: 0;
}

.sp-menu__link {
  display: block;
  font-family: var(--font-en);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.12em;
  padding: 18px 40px;
  transition: color 0.3s ease, transform 0.3s ease;
  position: relative;
}

.sp-menu__link::after {
  content: "";
  position: absolute;
  bottom: 8px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-main);
  transition: width 0.3s ease, left 0.3s ease;
  border-radius: 1px;
}

.sp-menu__link:hover {
  color: var(--color-blue);
}

.sp-menu__link:hover::after {
  width: 40px;
  left: calc(50% - 20px);
}

/* ========================================
   Footer
======================================== */
.footer {
  background: var(--color-dark);
  color: var(--color-white);
  padding-top: 0;
  position: relative;
}

.footer::before {
  content: "";
  display: block;
  height: 4px;
  background: var(--gradient-main);
  border-radius: 0 0 2px 2px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 40px;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 60px 20px;
}

.footer-logo {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
}

.footer-nav__title {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer-nav__list {
  font-size: 14px;
  line-height: 2.0;
}

.footer-nav__link {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.3s ease;
}

.footer-nav__link:hover {
  color: var(--color-white);
}

.footer-info {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 2.0;
}

.footer-info__title {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--color-white);
}

.footer-copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding: 20px;
  text-align: center;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
}

/* ========================================
   Hero (TOP Page)
======================================== */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gray-bg);
  background-size: cover;
  background-position: center;
  position: relative;
  margin-top: 80px;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 85% 15%, rgba(91, 164, 207, 0.4) 0%, transparent 400px),
    radial-gradient(circle at 10% 85%, rgba(109, 196, 160, 0.55) 0%, transparent 350px);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--color-text);
}

.hero-content__catch {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 56px;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.hero-content__sub {
  font-size: 20px;
  margin-top: 20px;
  font-weight: 400;
  line-height: 1.6;
}

.hero-content__catch::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: var(--gradient-main);
  margin: 24px auto 0;
  border-radius: 2px;
}

.hero-content__buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-top: 40px;
}

.hero-content__buttons .btn-cta {
  margin-top: 0;
}

/* SWELL wave bottom for hero */
.hero::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 60px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 60' preserveAspectRatio='none'%3E%3Cpath d='M0,0 C480,60 960,60 1440,0 L1440,60 L0,60 Z' fill='%23ffffff'/%3E%3C/svg%3E") no-repeat bottom center;
  background-size: 100% 100%;
  z-index: 2;
}

/* ========================================
   Page Header (Sub Pages)
======================================== */
.page-header {
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gray-bg);
  background-size: cover;
  background-position: center;
  position: relative;
  margin-top: 80px;
}

.page-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 85% 15%, rgba(91, 164, 207, 0.4) 0%, transparent 300px),
    radial-gradient(circle at 10% 85%, rgba(109, 196, 160, 0.55) 0%, transparent 250px);
}

.page-header__title {
  position: relative;
  z-index: 1;
  color: var(--color-text);
  text-align: center;
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 44px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.page-header__title::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: var(--gradient-main);
  margin: 16px auto 0;
  border-radius: 2px;
}

/* Page Header variations */
.page-header--about::before {
  background:
    radial-gradient(circle at 20% 25%, rgba(109, 196, 160, 0.45) 0%, transparent 320px),
    radial-gradient(circle at 90% 75%, rgba(91, 164, 207, 0.35) 0%, transparent 280px);
}

.page-header--service::before {
  background:
    radial-gradient(circle at 75% 70%, rgba(91, 164, 207, 0.5) 0%, transparent 350px),
    radial-gradient(circle at 15% 20%, rgba(109, 196, 160, 0.3) 0%, transparent 200px);
}

.page-header--company::before {
  background:
    radial-gradient(circle at 50% 80%, rgba(109, 196, 160, 0.45) 0%, transparent 300px),
    radial-gradient(circle at 85% 10%, rgba(91, 164, 207, 0.3) 0%, transparent 220px);
}

.page-header--contact::before {
  background:
    radial-gradient(circle at 30% 70%, rgba(91, 164, 207, 0.45) 0%, transparent 280px),
    radial-gradient(circle at 80% 25%, rgba(109, 196, 160, 0.4) 0%, transparent 300px);
}

.page-header--privacy::before {
  background:
    radial-gradient(circle at 70% 30%, rgba(109, 196, 160, 0.4) 0%, transparent 250px),
    radial-gradient(circle at 25% 80%, rgba(91, 164, 207, 0.35) 0%, transparent 300px);
}

/* SWELL wave bottom for page header */
.page-header::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 40px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 40' preserveAspectRatio='none'%3E%3Cpath d='M0,0 C480,40 960,40 1440,0 L1440,40 L0,40 Z' fill='%23ffffff'/%3E%3C/svg%3E") no-repeat bottom center;
  background-size: 100% 100%;
  z-index: 2;
}

/* ========================================
   MESSAGE Section (TOP)
======================================== */
.message-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.message-content__title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 30px;
  line-height: 1.6;
}

.message-content__text {
  line-height: 2.0;
  color: var(--color-text);
}

.message-content__text + .message-content__text {
  margin-top: 20px;
}

/* ========================================
   SERVICE Section (TOP + Detail Page)
======================================== */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.service-card {
  background: var(--color-white);
  border: none;
  border-radius: 8px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-main);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(91, 164, 207, 0.15);
}

.service-card__icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--gradient-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 16px;
  font-weight: 700;
  font-family: var(--font-en);
  color: var(--color-blue);
}

.service-card__title {
  font-size: 18px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 15px;
}

.service-card__text {
  font-size: 14px;
  color: var(--color-text-sub);
  line-height: 1.8;
}

.service-section .btn-cta {
  display: inline-flex;
  margin: 40px auto 0;
}

.service-section__btn-wrap {
  text-align: center;
  margin-top: 40px;
}

/* ========================================
   ABOUT Section (TOP + Detail Page)
======================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  background: #D0D0D0;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-image .dummy-label {
  color: #888;
  font-size: 15px;
  font-weight: 600;
  text-align: center;
  line-height: 1.8;
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-text__title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.6;
}

.about-text__desc {
  line-height: 2.0;
  color: var(--color-text);
}

.about-text__desc + .about-text__desc {
  margin-top: 16px;
}

.about-text .btn-cta {
  margin-top: 30px;
}

/* ========================================
   COMPANY Section (TOP + Detail Page)
======================================== */

/* TOP simple display */
.company-simple {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  text-align: center;
}

.company-simple__item-label {
  font-size: 14px;
  color: var(--color-text-sub);
  margin-bottom: 8px;
}

.company-simple__item-value {
  font-size: 18px;
  font-weight: 700;
}

.company-section__btn-wrap {
  text-align: center;
  margin-top: 40px;
}

/* Detail page table (SWELL style) */
.company-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}

.company-table th {
  width: 200px;
  padding: 20px;
  background: var(--color-gray-bg);
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  font-weight: 600;
  font-size: 15px;
  vertical-align: top;
}

.company-table td {
  padding: 20px;
  border-bottom: 1px solid var(--color-border);
  font-size: 15px;
}

/* ========================================
   CONTACT CTA Section
======================================== */
.cta-section {
  background: var(--color-dark);
  color: var(--color-white);
  text-align: center;
  padding: 100px 0 80px;
  position: relative;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 100%;
  height: 50px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 50' preserveAspectRatio='none'%3E%3Cpath d='M0,50 C480,0 960,0 1440,50 L1440,0 L0,0 Z' fill='%23ffffff'/%3E%3C/svg%3E") no-repeat top center;
  background-size: 100% 100%;
  z-index: 1;
}

.cta-section__title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 20px;
}

.cta-section__title::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: var(--gradient-main);
  margin: 16px auto 0;
  border-radius: 2px;
}

.cta-section__text {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
  font-size: 15px;
}

/* When CTA follows a gray section */
.cta-section--from-gray::before {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 50' preserveAspectRatio='none'%3E%3Cpath d='M0,50 C480,0 960,0 1440,50 L1440,0 L0,0 Z' fill='%23F7F9FA'/%3E%3C/svg%3E") no-repeat top center !important;
  background-size: 100% 100% !important;
}

/* ========================================
   CONTACT Form
======================================== */
.contact-form {
  max-width: 700px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 30px;
}

.form-group label {
  font-weight: 600;
  margin-bottom: 8px;
  display: block;
  font-size: 15px;
}

.required {
  color: #E53935;
  font-size: 12px;
  margin-left: 5px;
  font-weight: 400;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid var(--color-border);
  font-size: 16px;
  font-family: inherit;
  border-radius: 5px;
  background: var(--color-gray-bg);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  -webkit-appearance: none;
  appearance: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-blue);
  outline: none;
  box-shadow: 0 0 0 3px rgba(91, 164, 207, 0.15);
}

.form-group textarea {
  min-height: 200px;
  resize: vertical;
}

/* Radio buttons */
.radio-group {
  display: inline-flex;
  gap: 20px;
  flex-wrap: wrap;
}

.radio-group label {
  display: inline-flex;
  align-items: center;
  font-weight: 400;
  cursor: pointer;
}

.radio-group input[type="radio"] {
  width: auto;
  margin-right: 6px;
}

/* Checkbox */
.checkbox-group {
  display: flex;
  align-items: flex-start;
}

.checkbox-group label {
  display: flex;
  align-items: flex-start;
  font-weight: 400;
  cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
  width: auto;
  margin-right: 8px;
  margin-top: 4px;
}

/* Submit button (SWELL style) */
.btn-submit {
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
  display: block;
  padding: 18px 40px;
  background: var(--gradient-main);
  color: var(--color-white);
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
  box-shadow: 0 2px 8px rgba(91, 164, 207, 0.25);
}

.btn-submit:hover {
  background: var(--gradient-main-dark);
  box-shadow: 0 4px 15px rgba(91, 164, 207, 0.35);
  transform: translateY(-2px);
}

/* ========================================
   PHILOSOPHY Section (ABOUT US)
======================================== */
.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.philosophy-item {
  text-align: center;
  padding: 30px 20px;
  background: var(--color-white);
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}

.philosophy-item__title {
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 20px;
  margin-bottom: 16px;
  color: var(--color-blue);
}

.philosophy-item__text {
  font-size: 14px;
  color: var(--color-text-sub);
  line-height: 1.8;
}

/* ========================================
   STRENGTH Section (ABOUT US)
======================================== */
.strength-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.strength-card {
  background: var(--color-white);
  border: none;
  border-radius: 8px;
  padding: 30px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}

.strength-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-main);
}

.strength-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(91, 164, 207, 0.15);
}

.strength-card__number {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 40px;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 16px;
}

.strength-card__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}

.strength-card__text {
  font-size: 14px;
  color: var(--color-text-sub);
  line-height: 1.8;
}

/* ========================================
   FLOW Section (SERVICE)
======================================== */
.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

.flow-item {
  text-align: center;
  padding: 30px 15px;
  position: relative;
  background: var(--color-white);
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}

.flow-item:not(:last-child)::after {
  content: "\2192";
  position: absolute;
  right: -14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--color-border);
  z-index: 1;
}

.flow-item__number {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 48px;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 16px;
}

.flow-item__title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 10px;
}

.flow-item__text {
  font-size: 13px;
  color: var(--color-text-sub);
  line-height: 1.7;
}

/* ========================================
   Service Detail (SERVICE Page)
======================================== */
.service-detail {
  display: flex;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.service-detail:last-child {
  margin-bottom: 0;
}

.service-detail.reverse {
  flex-direction: row-reverse;
}

.service-detail__image {
  flex: 1;
  background: #D0D0D0;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-detail__image .dummy-label {
  color: #888;
  font-size: 15px;
  font-weight: 600;
  text-align: center;
  line-height: 1.8;
}

.service-detail__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.service-detail__content {
  flex: 1;
}

.service-detail__title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.5;
}

.service-detail__text {
  line-height: 2.0;
  color: var(--color-text);
}

.service-detail__text + .service-detail__text {
  margin-top: 16px;
}

/* ========================================
   PRIVACY POLICY
======================================== */
.privacy-content {
  max-width: 800px;
  margin: 0 auto;
}

.privacy-content h3 {
  font-size: 18px;
  font-weight: 700;
  margin-top: 40px;
  padding: 12px 16px 12px 20px;
  background: var(--color-gray-bg);
  border-left: none;
  border-radius: 0 5px 5px 0;
  margin-bottom: 16px;
  position: relative;
}

.privacy-content h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--gradient-main);
  border-radius: 2px 0 0 2px;
}

.privacy-content h3:first-child {
  margin-top: 0;
}

.privacy-content p {
  margin-bottom: 16px;
  line-height: 2.0;
}

.privacy-content ol,
.privacy-content ul {
  padding-left: 20px;
  margin-bottom: 16px;
  list-style: revert;
}

.privacy-content li {
  margin-bottom: 8px;
  line-height: 1.8;
}

/* ========================================
   ACCESS Section (COMPANY)
======================================== */
.map-container {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ========================================
   Animation - Fade In
======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

/* ========================================
   Responsive - Tablet (959px and below)
======================================== */
@media screen and (max-width: 959px) {

  /* Header */
  .header-nav {
    display: none;
  }

  .hamburger {
    display: block;
  }

  /* Section */
  .section {
    padding: var(--section-padding-sp) 0;
  }

  .section-heading__en {
    font-size: 30px;
  }

  .section-heading {
    margin-bottom: 40px;
  }

  /* Hero */
  .hero {
    min-height: 50vh;
  }

  .hero-content__catch {
    font-size: 36px;
  }

  .hero-content__sub {
    font-size: 16px;
  }

  /* Page Header */
  .page-header {
    height: 200px;
  }

  .page-header__title {
    font-size: 32px;
  }

  /* Service Grid */
  .service-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* About Grid */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .about-image {
    order: -1;
  }

  /* Company */
  .company-simple {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .company-table th,
  .company-table td {
    display: block;
    width: 100%;
  }

  .company-table th {
    padding: 15px 20px 5px;
    border-bottom: none;
  }

  .company-table td {
    padding: 5px 20px 15px;
  }

  /* Philosophy Grid */
  .philosophy-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* Strength Grid */
  .strength-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* Flow Grid */
  .flow-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .flow-item:not(:last-child)::after {
    display: none;
  }

  /* Service Detail */
  .service-detail {
    flex-direction: column;
    gap: 30px;
    margin-bottom: 60px;
  }

  .service-detail.reverse {
    flex-direction: column;
  }

  .service-detail__image,
  .service-detail__content {
    flex: none;
    width: 100%;
  }

  /* Footer */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  /* CTA */
  .cta-section {
    padding: 80px 0 60px;
  }

  .cta-section__title {
    font-size: 24px;
  }

  /* Contact Form */
  .btn-submit {
    max-width: 100%;
  }
}

/* ========================================
   Responsive - Mobile (599px and below)
======================================== */
@media screen and (max-width: 599px) {

  body {
    font-size: 15px;
  }

  /* Hero */
  .hero-content__catch {
    font-size: 28px;
  }

  .hero-content__sub {
    font-size: 15px;
    margin-top: 15px;
  }

  .hero-content__buttons {
    flex-direction: column;
    align-items: center;
    gap: 14px;
    margin-top: 30px;
  }

  /* Section Heading */
  .section-heading__en {
    font-size: 26px;
  }

  /* Page Header */
  .page-header__title {
    font-size: 26px;
  }

  /* Message */
  .message-content__title {
    font-size: 20px;
  }

  /* CTA */
  .cta-section__title {
    font-size: 20px;
  }

  .cta-section__text {
    font-size: 14px;
  }

  /* Button */
  .btn-cta {
    padding: 12px 30px;
    font-size: 14px;
  }

  /* Service Detail */
  .service-detail__title {
    font-size: 20px;
  }

  /* Flow Grid */
  .flow-grid {
    grid-template-columns: 1fr;
  }

  /* Strength card number */
  .strength-card__number {
    font-size: 32px;
  }

  /* Flow item number */
  .flow-item__number {
    font-size: 36px;
  }

  /* Privacy */
  .privacy-content h3 {
    font-size: 16px;
    margin-top: 30px;
  }

  /* Footer */
  .footer-copyright {
    font-size: 11px;
  }
}