/* =============================================================
   BRANDEX Corporate Site - style.css
   Luxury Corporate Design
============================================================= */

/* =====================
   1. CSS Variables
===================== */
:root {
  /* Colors */
  --color-navy:       #111C2D;
  --color-navy-mid:   #1A2B45;
  --color-navy-light: #243552;
  --color-ivory:      #F7F4EF;
  --color-greige:     #E8E2D8;
  --color-greige-mid: #D0C8BA;
  --color-gold:       #B08B57;
  --color-gold-light: #C9A76C;
  --color-gold-dark:  #8C6C3E;
  --color-white:      #FFFFFF;
  --color-black:      #0A0A0A;
  --color-text:       #1F2937;
  --color-text-mid:   #4B5563;
  --color-text-light: #9CA3AF;
  --color-border:     #E5E0D8;

  /* Typography */
  --font-jp:          'Noto Sans JP', sans-serif;
  --font-jp-serif:    'Noto Serif JP', serif;
  --font-en:          'Cormorant Garamond', serif;

  /* Sizes */
  --header-h:         72px;
  --header-h-sp:      60px;
  --container-max:    1240px;
  --section-py:       100px;
  --section-py-sp:    64px;

  /* Transitions */
  --transition-base:  all 0.3s ease;
  --transition-slow:  all 0.6s ease;

  /* Shadows */
  --shadow-card:      0 4px 24px rgba(17,28,45,0.08);
  --shadow-card-hover:0 12px 40px rgba(17,28,45,0.16);
  --shadow-header:    0 2px 20px rgba(17,28,45,0.12);
}


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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-jp);
  font-weight: 400;
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-base);
}

ul, ol { list-style: none; }

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


/* =====================
   3. Utilities
===================== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 40px;
}

.pc-only { display: inline; }
.sp-only { display: none; }

/* Section Title */
.section-title {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 48px;
}

.section-title .jp {
  font-family: var(--font-jp-serif);
  font-size: clamp(26px, 3.5vw, 40px);
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--color-navy);
  line-height: 1.4;
}

.section-title .en {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--color-gold);
  font-weight: 400;
}

.section-title--light .jp {
  color: var(--color-white);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-desc {
  font-size: 15px;
  color: var(--color-text-mid);
  max-width: 600px;
  margin: -32px auto 0;
  line-height: 1.9;
}

.section-desc--light {
  color: rgba(255,255,255,0.7);
}

.section-header .section-title {
  align-items: center;
  margin-bottom: 30px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-jp);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  border-radius: 2px;
  transition: var(--transition-base);
  cursor: pointer;
  white-space: nowrap;
}

.btn--large {
  padding: 18px 44px;
  font-size: 15px;
}

.btn-gold {
  background: var(--color-gold);
  color: var(--color-white);
  border: 2px solid var(--color-gold);
}
.btn-gold:hover {
  background: var(--color-gold-dark);
  border-color: var(--color-gold-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(176,139,87,0.3);
}

.btn-outline-white {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255,255,255,0.7);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--color-white);
  transform: translateY(-2px);
}

.btn-outline-navy {
  background: transparent;
  color: var(--color-navy);
  border: 2px solid var(--color-navy);
}
.btn-outline-navy:hover {
  background: var(--color-navy);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(17,28,45,0.2);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-gold);
  letter-spacing: 0.04em;
}
.link-arrow:hover {
  gap: 12px;
  color: var(--color-gold-dark);
}

/* AOS (手動実装) */
[data-aos] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0);
}
[data-aos][data-aos-delay="80"] { transition-delay: 0.08s; }
[data-aos][data-aos-delay="100"] { transition-delay: 0.1s; }
[data-aos][data-aos-delay="160"] { transition-delay: 0.16s; }
[data-aos][data-aos-delay="200"] { transition-delay: 0.2s; }
[data-aos][data-aos-delay="300"] { transition-delay: 0.3s; }


/* =====================
   4. Header
===================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: transparent;
  transition: background 0.4s ease, box-shadow 0.4s ease, height 0.3s ease;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-header);
}

.header-inner {
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  gap: 40px;
}

/* Logo */
.header-logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex-shrink: 0;
  text-decoration: none;
}

.logo-main {
  font-family: var(--font-en);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--color-white);
  transition: color 0.4s ease;
  line-height: 1;
}

.logo-sub {
  font-family: var(--font-en);
  font-size: 9px;
  letter-spacing: 0.22em;
  color: rgba(255,255,255,0.65);
  text-transform: uppercase;
  transition: color 0.4s ease;
}

.site-header.scrolled .logo-main { color: var(--color-navy); }
.site-header.scrolled .logo-sub  { color: var(--color-text-light); }


/* Global Nav */
.global-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

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

.nav-item {
  position: relative;
}
.nav-item::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  height: 20px;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.9);
  white-space: nowrap;
  transition: var(--transition-base);
}

.nav-arrow {
  font-size: 9px;
  transition: transform 0.3s ease;
}

.nav-item:hover .nav-arrow {
  transform: rotate(180deg);
}

.site-header.scrolled .nav-link {
  color: var(--color-text);
}

.nav-link:hover,
.site-header.scrolled .nav-link:hover {
  color: var(--color-gold);
}

/* Dropdown Menu */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 11px);
  left: 0;
  min-width: 200px;
  background: var(--color-white);
  border-top: 3px solid var(--color-gold);
  box-shadow: var(--shadow-card);
  border-radius: 0 0 4px 4px;
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
  z-index: 200;
}

.nav-item:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li a {
  display: block;
  padding: 10px 20px;
  font-size: 13px;
  color: var(--color-text);
  letter-spacing: 0.03em;
  transition: var(--transition-base);
}

.dropdown-menu li a:hover {
  color: var(--color-gold);
  background: var(--color-ivory);
  padding-left: 24px;
}

/* Mega Menu */
.mega-menu {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: var(--color-white);
  border-top: 3px solid var(--color-gold);
  box-shadow: 0 20px 60px rgba(17,28,45,0.15);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.35s ease, transform 0.35s ease, visibility 0.35s;
  z-index: 200;
  pointer-events: none;
}

.nav-item:hover .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.mega-menu-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 36px 40px 32px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 32px;
}

.mega-col-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-navy);
  text-transform: uppercase;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 10px;
}

.mega-col-title i {
  color: var(--color-gold);
  width: 16px;
  text-align: center;
}

.mega-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mega-list-item {
  position: relative;
}

.mega-list-item a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 12px;
  font-size: 13px;
  color: var(--color-text-mid);
  border-radius: 4px;
  letter-spacing: 0.03em;
  transition: var(--transition-base);
}

.mega-list-item a:hover {
  color: var(--color-gold);
  background: var(--color-ivory);
}

.mega-list-item a i {
  font-size: 10px;
  opacity: 0.5;
}

/* Grandchild Menu */
.grandchild-menu {
  position: absolute;
  left: 100%;
  top: 0;
  min-width: 180px;
  background: var(--color-white);
  border-left: 3px solid var(--color-gold);
  box-shadow: var(--shadow-card);
  border-radius: 0 4px 4px 0;
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateX(8px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  z-index: 300;
}

.mega-list-item.has-grandchild:hover .grandchild-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.grandchild-menu li a {
  padding: 8px 20px;
  font-size: 13px;
  color: var(--color-text-mid);
  border-radius: 0;
  background: none;
  transition: var(--transition-base);
}

.grandchild-menu li a:hover {
  color: var(--color-gold);
  background: var(--color-ivory);
  padding-left: 24px;
}

/* Mega CTA */
.mega-cta {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.mega-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-gold);
  color: var(--color-white);
  padding: 10px 20px;
  font-size: 13px;
  font-weight: 500;
  border-radius: 2px;
  letter-spacing: 0.06em;
  transition: var(--transition-base);
}

.mega-cta-btn:hover {
  background: var(--color-gold-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(176,139,87,0.3);
}


/* Header Contact Button */
.header-contact-btn {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-white);
  border: 1.5px solid rgba(255,255,255,0.5);
  border-radius: 2px;
  letter-spacing: 0.06em;
  white-space: nowrap;
  flex-shrink: 0;
  transition: var(--transition-base);
}

.header-contact-btn:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--color-white);
}

.site-header.scrolled .header-contact-btn {
  color: var(--color-navy);
  border-color: var(--color-navy);
}

.site-header.scrolled .header-contact-btn:hover {
  background: var(--color-navy);
  color: var(--color-white);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 36px;
  height: 36px;
  justify-content: center;
  align-items: center;
  flex-shrink: 0;
  border-radius: 4px;
  transition: var(--transition-base);
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: var(--transition-base);
  transform-origin: center;
}

.site-header.scrolled .hamburger span {
  background: var(--color-navy);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}


/* =====================
   5. Mobile Nav
===================== */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10,10,10,0.5);
  z-index: 1100;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.mobile-menu-overlay.active {
  display: block;
  opacity: 1;
}

.mobile-nav {
  position: fixed;
  top: 0;
  right: 0;
  width: min(360px, 90vw);
  height: 100%;
  background: var(--color-navy);
  z-index: 1200;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.4,0,0.2,1);
}

.mobile-nav.active {
  transform: translateX(0);
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.mobile-logo {
  font-family: var(--font-en);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--color-white);
}

.mobile-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  font-size: 18px;
  border-radius: 50%;
  transition: var(--transition-base);
}

.mobile-close:hover {
  color: var(--color-white);
  background: rgba(255,255,255,0.1);
}

.mobile-nav-list {
  padding: 16px 0 40px;
}

.mobile-nav-link {
  display: block;
  padding: 14px 24px;
  font-size: 14px;
  color: rgba(255,255,255,0.85);
  letter-spacing: 0.05em;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition-base);
}

.mobile-nav-link:hover {
  color: var(--color-gold-light);
  background: rgba(255,255,255,0.05);
  padding-left: 28px;
}

.mobile-nav-link.mobile-contact {
  margin: 20px 24px 0;
  padding: 14px 24px;
  background: var(--color-gold);
  color: var(--color-white);
  text-align: center;
  border-radius: 2px;
  border-bottom: none;
  font-weight: 500;
}

.mobile-nav-link.mobile-contact:hover {
  background: var(--color-gold-dark);
  padding-left: 24px;
}

/* Accordion */
.mobile-accordion,
.mobile-accordion-child {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 14px 24px;
  font-size: 14px;
  font-family: var(--font-jp);
  color: rgba(255,255,255,0.85);
  letter-spacing: 0.05em;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition-base);
  text-align: left;
}

.mobile-accordion:hover,
.mobile-accordion-child:hover {
  color: var(--color-gold-light);
  background: rgba(255,255,255,0.05);
}

.mobile-accordion i,
.mobile-accordion-child i {
  font-size: 11px;
  opacity: 0.6;
  transition: transform 0.3s ease;
}

.mobile-accordion.active i,
.mobile-accordion-child.active i {
  transform: rotate(180deg);
}

.mobile-child-list {
  display: none;
  background: rgba(0,0,0,0.2);
}

.mobile-child-list.active {
  display: block;
}

.mobile-child-list .mobile-nav-link {
  padding-left: 36px;
  font-size: 13px;
}

.mobile-child-list .mobile-nav-link:hover {
  padding-left: 40px;
}

.mobile-grandchild-list {
  display: none;
  background: rgba(0,0,0,0.15);
}

.mobile-grandchild-list.active {
  display: block;
}

.mobile-grandchild-list li a {
  display: block;
  padding: 11px 24px 11px 48px;
  font-size: 12px;
  color: rgba(255,255,255,0.65);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  transition: var(--transition-base);
}

.mobile-grandchild-list li a:hover {
  color: var(--color-gold-light);
  padding-left: 52px;
}


/* =====================
   6. Hero Section
===================== */
.hero {
  position: relative;
  height: 100svh;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(17,28,45,0.72) 0%,
    rgba(17,28,45,0.50) 50%,
    rgba(17,28,45,0.38) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  width: 100%;
  margin: 0 auto;
  padding: 0 40px;
  padding-top: var(--header-h);
}

.hero-eyebrow {
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.32em;
  color: var(--color-gold-light);
  text-transform: uppercase;
  margin-bottom: 20px;
  opacity: 0;
  animation: heroFadeUp 1s ease 0.3s forwards;
}

.hero-heading {
  font-family: var(--font-jp-serif);
  font-size: clamp(38px, 6vw, 76px);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: 0.04em;
  color: var(--color-white);
  margin-bottom: 28px;
  opacity: 0;
  animation: heroFadeUp 1s ease 0.5s forwards;
}

.hero-desc {
  font-size: clamp(14px, 1.6vw, 16px);
  color: rgba(255,255,255,0.82);
  line-height: 2;
  margin-bottom: 44px;
  max-width: 520px;
  opacity: 0;
  animation: heroFadeUp 1s ease 0.7s forwards;
}

.hero-btns {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  opacity: 0;
  animation: heroFadeUp 1s ease 0.9s forwards;
}

/* Scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  z-index: 1;
  opacity: 0;
  animation: heroFadeUp 1s ease 1.2s forwards;
}

.scroll-text {
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: rgba(255,255,255,0.6);
}

.scroll-line {
  display: block;
  width: 1px;
  height: 48px;
  background: linear-gradient(
    to bottom,
    rgba(255,255,255,0.5),
    rgba(255,255,255,0)
  );
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}


/* =====================
   7. Intro Section
===================== */
.intro {
  padding: var(--section-py) 0;
  background: var(--color-ivory);
}

.intro-inner {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 60px;
  align-items: start;
}

.intro-label {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.35em;
  color: var(--color-gold);
  text-transform: uppercase;
  padding-top: 6px;
  writing-mode: vertical-lr;
  transform: rotate(180deg);
}

.intro-body .section-title {
  margin-bottom: 28px;
}

.intro-text {
  font-size: 15px;
  color: var(--color-text-mid);
  line-height: 2.1;
  margin-bottom: 28px;
  max-width: 640px;
}


/* =====================
   8. Service Section
===================== */
.service {
  padding: var(--section-py) 0;
  background: var(--color-white);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--color-border);
  border: 2px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
}

.service-card {
  background: var(--color-white);
  padding: 40px 32px;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-gold);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.service-card:hover {
  background: var(--color-ivory);
  box-shadow: var(--shadow-card-hover);
  z-index: 1;
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card--wide {
  grid-column: span 1;
}

.service-card-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--color-gold);
  border-radius: 50%;
  margin-bottom: 24px;
  color: var(--color-gold);
  font-size: 20px;
  transition: var(--transition-base);
}

.service-card:hover .service-card-icon {
  background: var(--color-gold);
  color: var(--color-white);
}

.service-card-title {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 14px;
}

.service-card-title .jp {
  font-family: var(--font-jp-serif);
  font-size: 18px;
  font-weight: 500;
  color: var(--color-navy);
  letter-spacing: 0.04em;
}

.service-card-title .en {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.25em;
  color: var(--color-gold);
  text-transform: uppercase;
}

.service-card-text {
  font-size: 14px;
  color: var(--color-text-mid);
  line-height: 1.9;
  margin-bottom: 20px;
}

.service-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-gold);
  transition: var(--transition-base);
}

.service-card-link:hover { gap: 10px; }


/* =====================
   9. Strength Section
===================== */
.strength {
  padding: var(--section-py) 0;
  background: var(--color-navy);
}

.strength-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  background: rgba(255,255,255,0.08);
  border: 2px solid rgba(255,255,255,0.08);
  border-radius: 4px;
  overflow: hidden;
}

.strength-item {
  background: rgba(255,255,255,0.04);
  padding: 48px 32px;
  text-align: center;
  transition: var(--transition-base);
  position: relative;
}

.strength-item:hover {
  background: rgba(255,255,255,0.08);
}

.strength-num {
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  margin-bottom: 16px;
}

.strength-icon {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(176,139,87,0.4);
  border-radius: 50%;
  margin: 0 auto 20px;
  color: var(--color-gold-light);
  font-size: 22px;
  transition: var(--transition-base);
}

.strength-item:hover .strength-icon {
  border-color: var(--color-gold);
  background: var(--color-gold);
  color: var(--color-white);
}

.strength-title {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
  align-items: center;
}

.strength-title .jp {
  font-family: var(--font-jp-serif);
  font-size: 18px;
  font-weight: 500;
  color: var(--color-white);
  letter-spacing: 0.04em;
}

.strength-title .en {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.25em;
  color: var(--color-gold);
  text-transform: uppercase;
}

.strength-text {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  line-height: 1.9;
}


/* =====================
   10. Works Section
===================== */
.works {
  padding: var(--section-py) 0;
  background: var(--color-ivory);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 48px;
}

.work-card {
  background: var(--color-white);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition-base);
}

.work-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

.work-card-img {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.work-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.work-card:hover .work-card-img img {
  transform: scale(1.06);
}

.work-card-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--color-gold);
  color: var(--color-white);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  padding: 4px 12px;
  border-radius: 2px;
}

.work-card-body {
  padding: 28px 28px 32px;
}

.work-card-title {
  font-family: var(--font-jp-serif);
  font-size: 18px;
  font-weight: 500;
  color: var(--color-navy);
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}

.work-card-title .en {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.25em;
  color: var(--color-gold);
  text-transform: uppercase;
}

.work-card-challenge,
.work-card-approach,
.work-card-result {
  font-size: 13px;
  color: var(--color-text-mid);
  line-height: 1.8;
  margin-bottom: 6px;
}

.work-card-challenge strong,
.work-card-approach strong,
.work-card-result strong {
  color: var(--color-navy);
  font-weight: 600;
}

.works-more {
  text-align: center;
}


/* =====================
   11. Numbers Section
===================== */
.numbers {
  padding: var(--section-py) 0;
  background: var(--color-navy-mid);
}

.numbers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px;
  overflow: hidden;
}

.numbers-item {
  text-align: center;
  padding: 60px 20px;
  border-right: 1px solid rgba(255,255,255,0.1);
  transition: var(--transition-base);
}

.numbers-item:last-child { border-right: none; }

.numbers-item:hover {
  background: rgba(255,255,255,0.05);
}

.numbers-num {
  font-family: var(--font-en);
  font-size: clamp(48px, 5vw, 72px);
  font-weight: 300;
  color: var(--color-white);
  line-height: 1;
  display: block;
}

.numbers-unit {
  font-family: var(--font-en);
  font-size: 24px;
  font-weight: 300;
  color: var(--color-gold-light);
  vertical-align: super;
  margin-left: 2px;
}

.numbers-label {
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  margin-top: 12px;
  letter-spacing: 0.06em;
}

.numbers-label-en {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  margin-top: 4px;
  text-transform: uppercase;
}


/* =====================
   12. Flow Section
===================== */
.flow {
  padding: var(--section-py) 0;
  background: var(--color-white);
}

.flow-steps {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  gap: 0;
  align-items: start;
}

.flow-step {
  text-align: center;
  padding: 40px 24px;
  background: var(--color-ivory);
  border-radius: 4px;
  transition: var(--transition-base);
}

.flow-step:hover {
  background: var(--color-greige);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.flow-step-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--color-gold);
  border-radius: 50%;
  margin: 0 auto 16px;
  color: var(--color-gold);
  font-size: 22px;
  transition: var(--transition-base);
}

.flow-step:hover .flow-step-icon {
  background: var(--color-gold);
  color: var(--color-white);
}

.flow-step-num {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  margin-bottom: 12px;
}

.flow-step-title {
  display: flex;
  flex-direction: column;
  gap: 5px;
  align-items: center;
  margin-bottom: 12px;
}

.flow-step-title .jp {
  font-family: var(--font-jp-serif);
  font-size: 16px;
  font-weight: 500;
  color: var(--color-navy);
  letter-spacing: 0.04em;
}

.flow-step-title .en {
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.25em;
  color: var(--color-gold);
  text-transform: uppercase;
}

.flow-step-text {
  font-size: 13px;
  color: var(--color-text-mid);
  line-height: 1.9;
}

.flow-step-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 16px;
  color: var(--color-greige-mid);
  font-size: 16px;
}


/* =====================
   13. About Section
===================== */
.about {
  padding: var(--section-py) 0;
  background: var(--color-ivory);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-sub-title {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--color-gold);
  width: fit-content;
}

.about-sub-title .jp {
  font-family: var(--font-jp-serif);
  font-size: 20px;
  font-weight: 500;
  color: var(--color-navy);
  letter-spacing: 0.04em;
}

.about-sub-title .en {
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.28em;
  color: var(--color-gold);
  text-transform: uppercase;
}

/*.about-dl {}*/

.about-dl-row {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

.about-dl-row:last-child { border-bottom: none; }

.about-dl-row dt {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-navy);
  letter-spacing: 0.06em;
  padding-top: 2px;
  white-space: wrap;
}

.about-dl-row dd {
  font-size: 14px;
  color: var(--color-text-mid);
  line-height: 1.85;
}

.company-img {
  grid-column: 2;
  grid-row: auto;
}

/* Trust Cards */
.trust-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.trust-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--color-white);
  padding: 20px 24px;
  border-radius: 4px;
  border-left: 4px solid var(--color-gold);
  box-shadow: var(--shadow-card);
  transition: var(--transition-base);
}

.trust-card:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-card-hover);
}

.trust-card-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-ivory);
  border-radius: 50%;
  color: var(--color-gold);
  font-size: 18px;
  flex-shrink: 0;
}

.trust-card-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-gold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.trust-card-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 2px;
}

.trust-card-addr {
  font-size: 12px;
  color: var(--color-text-light);
}


/* =====================
   14. News Section
===================== */
.news {
  padding: var(--section-py) 0;
  background: var(--color-white);
}

.news-list {
  margin-bottom: 48px;
}

.news-item {
  border-bottom: 1px solid var(--color-border);
}

.news-link {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 22px 0;
  transition: var(--transition-base);
}

.news-link:hover {
  padding-left: 8px;
}

.news-date {
  font-family: var(--font-en);
  font-size: 14px;
  color: var(--color-text-light);
  letter-spacing: 0.06em;
  white-space: nowrap;
  flex-shrink: 0;
}

.news-tag {
  display: inline-block;
  padding: 3px 12px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-gold);
  border: 1px solid var(--color-gold);
  border-radius: 2px;
  white-space: nowrap;
  flex-shrink: 0;
}

.news-title {
  font-size: 14px;
  color: var(--color-text);
  letter-spacing: 0.03em;
  flex: 1;
  transition: color 0.3s;
}

.news-link:hover .news-title {
  color: var(--color-gold);
}

.news-more {
  text-align: center;
}


/* =====================
   15. Contact CTA Section
===================== */
.contact-cta {
  position: relative;
  padding: 120px 0;
  /*background-image: url('https://sspark.genspark.ai/cfimages?u1=BL8J88no6MWUVrRcgezGT16iDHvWwHyREJGBly1NVROkctGlZ%2BDLFScyWcVV2oOReaPyqOMHIMH4rZMc2rwl8AL72wTX5yEzwFXLQMCgl%2FPJLpGTlpzmJL9CHUncM6nbdV%2FF2ziiFw3LF5JHEAV%2FR1kkzoQygZ%2FrM%2F9mDKum1OhNNtv0o4Ui0Q%3D%3D&u2=I89gZf1JgrR35UQW&width=2560');*/
  background-image: url(../img/C00272-003B.jpg);
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  text-align: center;
}

.contact-cta-overlay {
  position: absolute;
  inset: 0;
  background: rgba(17,28,45,0.82);
}

.contact-cta-inner {
  position: relative;
  z-index: 1;
}

.contact-cta-title {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
}

.contact-cta-title .jp {
  font-family: var(--font-jp-serif);
  font-size: clamp(26px, 3.5vw, 40px);
  font-weight: 400;
  color: var(--color-white);
  line-height: 1.5;
  letter-spacing: 0.06em;
}

.contact-cta-title .en {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.35em;
  color: var(--color-gold-light);
  text-transform: uppercase;
}

.contact-cta-text {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  line-height: 2;
  margin-bottom: 48px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.contact-cta-btns {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.contact-cta-tel {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  letter-spacing: 0.04em;
}

.contact-cta-tel i { color: var(--color-gold-light); }

.contact-cta-tel-note {
  font-size: 12px;
  color: rgba(255,255,255,0.45);
}


/* =====================
   16. Footer
===================== */
.site-footer {
  background: var(--color-navy);
  color: rgba(255,255,255,0.75);
}

.footer-top {
  padding: 80px 0 60px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 80px;
}

.footer-logo {
  font-family: var(--font-en);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--color-white);
  margin-bottom: 8px;
}

.footer-tagline {
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--color-gold);
  text-transform: uppercase;
  margin-bottom: 24px;
}

.footer-addr,
.footer-tel {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  line-height: 1.8;
  margin-bottom: 4px;
}

.footer-sns {
  display: flex;
  gap: 16px;
  margin-top: 24px;
}

.footer-sns a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: var(--transition-base);
}

.footer-sns a:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  background: rgba(176,139,87,0.1);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.footer-nav-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-white);
  text-transform: uppercase;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav li a {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.03em;
  transition: var(--transition-base);
}

.footer-nav li a:hover {
  color: var(--color-gold-light);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 24px 0;
  text-align: center;
}

.footer-copy {
  font-size: 12px;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.04em;
}


/* =====================
   17. Page Top Button
===================== */
.page-top {
  position: fixed;
  right: 32px;
  bottom: 32px;
  width: 44px;
  height: 44px;
  background: var(--color-gold);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: var(--transition-base);
  box-shadow: 0 4px 16px rgba(176,139,87,0.4);
}

.page-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.page-top:hover {
  background: var(--color-gold-dark);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(176,139,87,0.5);
}


/* =====================
   18. Responsive
===================== */

/* Tablet (1024px and below) */
@media (max-width: 1024px) {
  :root {
    --section-py: 80px;
  }

  .container { padding: 0 24px; }

  .header-inner { padding: 0 24px; gap: 20px; }
  .nav-link { padding: 8px 10px; font-size: 12px; }
  .header-contact-btn { padding: 8px 14px; font-size: 12px; }

  .mega-menu-inner { grid-template-columns: repeat(3, 1fr); }
  .mega-menu-inner .mega-col:nth-child(4),
  .mega-menu-inner .mega-col:nth-child(5) {
    display: none;
  }

  .intro-inner { grid-template-columns: 120px 1fr; gap: 40px; }
  .intro-label { font-size: 10px; }

  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .service-card--wide { grid-column: span 2; }

  .strength-grid { grid-template-columns: repeat(2, 1fr); }

  .works-grid { grid-template-columns: repeat(2, 1fr); }
  .works-grid .work-card:nth-child(3) { display: none; }

  .numbers-grid { grid-template-columns: repeat(2, 1fr); }
  .numbers-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.1); }
  .numbers-item:nth-child(2n) { border-right: none; }

  .flow-steps { grid-template-columns: 1fr auto 1fr; gap: 0; }
  .flow-step:nth-child(6),
  .flow-step:nth-child(7),
  .flow-steps > .flow-step-arrow:nth-child(4),
  .flow-steps > .flow-step-arrow:nth-child(6) { display: none; }

  .about-grid { grid-template-columns: 1fr; gap: 48px; }

  .footer-grid { grid-template-columns: 1fr; gap: 48px; }
  .footer-nav { grid-template-columns: repeat(2, 1fr); }
}


/* Mobile (768px and below) */
@media (max-width: 768px) {
  :root {
    --section-py: var(--section-py-sp);
    --header-h: var(--header-h-sp);
  }

  .pc-only { display: none; }
  .sp-only { display: inline; }

  .container { padding: 0 20px; }

  /* Header */
  .global-nav,
  .header-contact-btn { display: none; }

  .hamburger { display: flex; }

  .header-inner { padding: 0 20px; gap: 12px; }
  .logo-main { font-size: 22px; }
  .logo-sub { display: none; }

  /* Hero */
  .hero-content { padding: 0 20px; padding-top: var(--header-h-sp); }
  .hero-heading { font-size: clamp(32px, 9vw, 48px); }
  .hero-desc { font-size: 14px; }
  .hero-btns { gap: 14px; }
  .hero-btns .btn { padding: 13px 24px; font-size: 13px; }

  /* Intro */
  .intro-inner { grid-template-columns: 1fr; gap: 24px; }
  .intro-label { writing-mode: horizontal-tb; transform: none; }

  /* Service */
  .service-grid { grid-template-columns: 1fr 1fr; }
  .service-card { padding: 28px 20px; }
  .service-card--wide { grid-column: span 2; }

  /* Strength */
  .strength-grid { grid-template-columns: 1fr 1fr; }
  .strength-item { padding: 36px 20px; }

  /* Works */
  .works-grid {
    grid-template-columns: 1fr;
  }
  .works-grid .work-card:nth-child(3) { display: block; }

  /* Numbers */
  .numbers-grid { grid-template-columns: 1fr 1fr; }
  .numbers-item { padding: 40px 16px; }

  /* Flow */
  .flow-steps {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .flow-step-arrow { display: none; }
  .flow-step { padding: 28px 24px; }

  /* About */
  .about-dl-row { grid-template-columns: 80px 1fr; }

  /* News */
  .news-link { flex-wrap: wrap; gap: 10px; }
  .news-title { width: 100%; }

  /* Contact CTA */
  .contact-cta { padding: 80px 0; background-attachment: scroll; }
  .contact-cta-btns { flex-direction: column; align-items: center; }
  .contact-cta-btns .btn { width: 100%; max-width: 320px; justify-content: center; }

  /* Footer */
  .footer-nav { grid-template-columns: repeat(2, 1fr); }
  .footer-top { padding: 56px 0 40px; }
}


/* Small Mobile (480px and below) */
@media (max-width: 480px) {
  .service-grid { grid-template-columns: 1fr; }
  .service-card--wide { grid-column: span 1; }

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

  .numbers-grid { grid-template-columns: 1fr; }
  .numbers-item { border-right: none; }

  .footer-nav { grid-template-columns: 1fr 1fr; gap: 20px; }

  .hero-btns { flex-direction: column; }
  .hero-btns .btn { width: 100%; justify-content: center; }
}