/* ============================================================
   株式会社YASAI - Style Sheet
   ============================================================ */

/* ---------- CSS CUSTOM PROPERTIES ---------- */
:root {
  --color-primary: #2d8a4e;
  --color-primary-dark: #1a5c32;
  --color-primary-light: #4CAF50;
  --color-primary-pale: #e8f5e9;
  --color-accent: #c62828;
  --color-accent-light: #e57373;
  --color-gold: #d4a017;
  --color-gold-light: #f5e6b8;
  --color-white: #ffffff;
  --color-offwhite: #faf8f5;
  --color-beige: #f5f0e8;
  --color-text: #2c2c2c;
  --color-text-light: #666666;
  --color-text-muted: #999999;
  --color-border: #e0ddd5;
  --font-serif: 'Noto Serif JP', 'Yu Mincho', 'YuMincho', 'Hiragino Mincho ProN', serif;
  --font-sans: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
  --shadow-xl: 0 16px 60px rgba(0,0,0,0.16);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 30px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container-width: 1200px;
}

/* ---------- RESET & BASE ---------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-offwhite);
  line-height: 1.8;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- SECTION LABELS & TITLES ---------- */
.section-label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text);
  margin-bottom: 16px;
}

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

.section-subtitle {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 48px;
}

.section-subtitle--white {
  color: rgba(255,255,255,0.85);
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 14px 32px;
  border-radius: 50px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(255,255,255,0.15);
  transition: left 0.4s ease;
  z-index: -1;
}

.btn:hover::before {
  left: 100%;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(45,138,78,0.3);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.btn--outline:hover {
  background: var(--color-white);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn--lg {
  padding: 18px 40px;
  font-size: 1.05rem;
}

.btn--sm {
  padding: 10px 24px;
  font-size: 0.85rem;
}

/* ---------- FIXED SIDE BANNERS ---------- */
.side-banners {
  position: fixed;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.side-banner {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 16px;
  color: var(--color-white);
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.4;
  writing-mode: horizontal-tb;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

.side-banner:hover {
  padding-right: 24px;
}

.side-banner--doc {
  background: var(--color-primary);
}

.side-banner--shop {
  background: var(--color-accent);
}

.side-banner__icon {
  font-size: 1.2rem;
}

.side-banner__text {
  font-size: 0.7rem;
  white-space: nowrap;
}

/* ---------- HEADER ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(255,255,255,0);
  backdrop-filter: blur(0px);
  transition: all 0.4s ease;
  border-bottom: 1px solid transparent;
}

.header--scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.header__logo a {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.header__logo-main {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  line-height: 1;
  transition: var(--transition);
}

.header:not(.header--scrolled) .header__logo-main {
  color: var(--color-white);
}

.header__logo-sub {
  font-size: 0.65rem;
  color: var(--color-text-muted);
  letter-spacing: 0.15em;
  transition: var(--transition);
}

.header:not(.header--scrolled) .header__logo-sub {
  color: rgba(255,255,255,0.7);
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: 28px;
}

.header__nav-list a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 4px 0;
  transition: var(--transition);
}

.header:not(.header--scrolled) .header__nav-list a {
  color: var(--color-white);
}

.header__nav-list a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.3s ease;
}

.header--scrolled .header__nav-list a:hover::after,
.header--scrolled .header__nav-list a.active::after {
  width: 100%;
}

.header:not(.header--scrolled) .header__nav-list a::after {
  background: var(--color-white);
}

.header:not(.header--scrolled) .header__nav-list a:hover::after {
  width: 100%;
}

.header__nav-cta {
  background: var(--color-primary) !important;
  color: var(--color-white) !important;
  padding: 10px 24px !important;
  border-radius: 50px;
  font-weight: 600 !important;
}

.header__nav-cta:hover {
  background: var(--color-primary-dark) !important;
  transform: translateY(-1px);
}

.header__nav-cta::after {
  display: none !important;
}

.header__hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.header__hamburger span {
  display: block;
  width: 28px;
  height: 2px;
  background: var(--color-text);
  transition: all 0.3s ease;
}

.header:not(.header--scrolled) .header__hamburger span {
  background: var(--color-white);
}

.header__hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

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

.header__hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* ---------- HERO SECTION ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #0d3320 0%, #1a5c32 30%, #2d8a4e 60%, #1a4a2e 100%);
  overflow: hidden;
}

.hero__particles {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(76,175,80,0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(139,195,74,0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(0,0,0,0.3) 0%, transparent 60%);
  z-index: 2;
}

.hero__content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: 120px 24px 80px;
  max-width: 900px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(212,160,23,0.2);
  border: 1px solid rgba(212,160,23,0.5);
  color: var(--color-gold-light);
  padding: 10px 28px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 32px;
  backdrop-filter: blur(10px);
  animation: badgePulse 3s ease-in-out infinite;
}

@keyframes badgePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(212,160,23,0.3); }
  50% { box-shadow: 0 0 20px 8px rgba(212,160,23,0.15); }
}

.hero__badge-icon {
  font-size: 1.1rem;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  color: var(--color-white);
  line-height: 1.3;
  margin-bottom: 24px;
  text-shadow: 0 2px 40px rgba(0,0,0,0.3);
}

.hero__subtitle {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  color: rgba(255,255,255,0.85);
  line-height: 1.9;
  margin-bottom: 48px;
}

.hero__stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.hero__stat {
  text-align: center;
}

.hero__stat-number {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 900;
  color: var(--color-white);
  line-height: 1;
}

.hero__stat-unit {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2vw, 1.3rem);
  font-weight: 700;
  color: rgba(255,255,255,0.9);
}

.hero__stat-label {
  display: block;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  margin-top: 6px;
  letter-spacing: 0.1em;
}

.hero__stat-divider {
  width: 1px;
  height: 50px;
  background: rgba(255,255,255,0.2);
}

.hero__cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero__scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.5);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.3);
  position: relative;
  overflow: hidden;
}

.hero__scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-white);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { top: -100%; }
  50% { top: 100%; }
  100% { top: 100%; }
}

/* ---------- ICON NAVIGATION ---------- */
.icon-nav {
  padding: 60px 0;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.icon-nav__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}

.icon-nav__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 24px 12px;
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
  text-align: center;
}

.icon-nav__item:hover {
  background: var(--color-primary-pale);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.icon-nav__icon {
  font-size: 2rem;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-pale);
  border-radius: 50%;
  transition: var(--transition);
}

.icon-nav__item:hover .icon-nav__icon {
  background: var(--color-primary);
  transform: scale(1.1);
}

.icon-nav__item span:last-child {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text);
}

/* ---------- ABOUT / PHILOSOPHY ---------- */
.about {
  position: relative;
  padding: 140px 0;
  overflow: hidden;
}

.about__parallax-bg {
  position: absolute;
  inset: -20% 0;
  background: linear-gradient(160deg, #0d3320 0%, #1a5c32 40%, #2d8a4e 100%);
  z-index: 0;
}

.about__parallax-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 40%, rgba(76,175,80,0.2) 0%, transparent 50%),
    radial-gradient(circle at 70% 60%, rgba(139,195,74,0.15) 0%, transparent 50%);
}

.about__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about .section-label {
  color: rgba(255,255,255,0.6);
}

.about__text {
  color: rgba(255,255,255,0.85);
  font-size: 1.05rem;
  line-height: 2;
  margin-bottom: 48px;
}

.about__text p + p {
  margin-top: 20px;
}

.about__highlight {
  display: flex;
  align-items: center;
  gap: 20px;
  background: rgba(212,160,23,0.15);
  border: 1px solid rgba(212,160,23,0.4);
  border-radius: var(--radius-lg);
  padding: 28px 36px;
  text-align: left;
  backdrop-filter: blur(10px);
}

.about__highlight-icon {
  font-size: 2.5rem;
  flex-shrink: 0;
}

.about__highlight-text {
  color: var(--color-gold-light);
  font-size: 1.05rem;
  line-height: 1.7;
  font-weight: 500;
}

.about__highlight-text strong {
  font-size: 1.3rem;
  color: #ffd54f;
}

/* ---------- PATENT TECHNOLOGY SECTION ---------- */
.patent {
  padding: 120px 0;
  background: var(--color-offwhite);
  text-align: center;
}

/* Only Badge */
.patent__only-badge {
  margin: 48px auto 64px;
  text-align: center;
}

.patent__only-badge-inner {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 200px;
  height: 200px;
  margin-bottom: 20px;
}

.patent__only-badge-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 3px solid var(--color-gold);
  animation: ringRotate 10s linear infinite;
}

.patent__only-badge-ring::before {
  content: '';
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  border: 1px solid rgba(212,160,23,0.4);
}

.patent__only-badge-ring::after {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 12px;
  background: var(--color-gold);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(212,160,23,0.5);
}

@keyframes ringRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.patent__only-badge-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  z-index: 1;
}

.patent__only-badge-top {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  color: var(--color-gold);
}

.patent__only-badge-main {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 900;
  color: var(--color-primary-dark);
  line-height: 1.2;
}

.patent__only-badge-bottom {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text-light);
  letter-spacing: 0.1em;
}

.patent__only-badge-desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* 3 Pillars */
.patent__pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 80px;
}

.patent__pillar {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 48px 32px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all 0.4s ease;
}

.patent__pillar:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.patent__pillar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
}

.patent__pillar-number {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}

.patent__pillar-icon {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  margin-bottom: 24px;
}

.patent__pillar-icon-bg {
  position: absolute;
  inset: 0;
  background: var(--color-primary-pale);
  border-radius: 50%;
  transition: var(--transition);
}

.patent__pillar:hover .patent__pillar-icon-bg {
  transform: scale(1.15);
  background: var(--color-primary);
  opacity: 0.15;
}

.patent__pillar-icon span {
  position: relative;
  z-index: 1;
  font-size: 2rem;
}

.patent__pillar-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 16px;
  color: var(--color-text);
}

.patent__pillar-highlight {
  color: var(--color-primary);
  font-size: 1.5rem;
  font-weight: 900;
}

.patent__pillar-desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 24px;
}

.patent__pillar-bar {
  position: relative;
  height: 8px;
  background: var(--color-beige);
  border-radius: 4px;
  overflow: hidden;
}

.patent__pillar-bar-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: 4px;
  transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.patent__pillar-bar-label {
  display: block;
  font-size: 0.7rem;
  color: var(--color-text-muted);
  text-align: right;
  margin-top: 6px;
}

/* Professor Profile */
.patent__professor {
  max-width: 800px;
  margin: 0 auto;
}

.patent__professor-card {
  display: flex;
  align-items: center;
  gap: 40px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-lg);
  text-align: left;
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.patent__professor-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--color-gold), var(--color-primary));
}

.patent__professor-avatar {
  flex-shrink: 0;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--color-primary-pale);
}

.patent__professor-avatar-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary-pale), var(--color-beige));
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.patent__professor-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-gold);
  margin-bottom: 8px;
}

.patent__professor-name {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--color-text);
  margin-bottom: 4px;
}

.patent__professor-name span {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-light);
  margin-left: 8px;
}

.patent__professor-title {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.patent__professor-bio {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.9;
}

.patent__professor-bio strong {
  color: var(--color-primary);
  font-weight: 700;
}

/* ---------- TECHNOLOGY SECTION ---------- */
.technology {
  position: relative;
  padding: 120px 0;
  overflow: hidden;
  text-align: center;
}

.technology__bg {
  position: absolute;
  inset: -20% 0;
  background: linear-gradient(160deg, #1a3a2a 0%, #0d3320 50%, #1a5c32 100%);
  z-index: 0;
}

.technology .container {
  position: relative;
  z-index: 1;
}

.technology .section-label {
  color: rgba(255,255,255,0.5);
}

.technology__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-bottom: 64px;
}

.technology__card {
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: left;
  transition: all 0.4s ease;
}

.technology__card:hover {
  background: rgba(255,255,255,0.12);
  transform: translateY(-4px);
}

.technology__card-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.technology__card h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 12px;
}

.technology__card p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.75);
  line-height: 1.8;
}

.technology__card p strong {
  color: #81c784;
  font-weight: 700;
}

/* Comparison Bars */
.technology__comparison {
  max-width: 700px;
  margin: 0 auto 40px;
}

.technology__comparison-item {
  margin-bottom: 24px;
  text-align: left;
}

.technology__comparison-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 8px;
  font-weight: 600;
}

.technology__comparison-bar {
  height: 20px;
  background: rgba(255,255,255,0.1);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 6px;
}

.technology__comparison-fill {
  height: 100%;
  width: 0;
  border-radius: 10px;
  transition: width 2s cubic-bezier(0.4, 0, 0.2, 1);
}

.technology__comparison-fill--normal {
  background: linear-gradient(90deg, #e57373, #ef5350);
}

.technology__comparison-fill--yasai {
  background: linear-gradient(90deg, #66bb6a, #43a047);
}

.technology__comparison-value {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
}

.technology__comparison-value--highlight {
  color: #81c784;
  font-weight: 700;
}

.technology__note {
  background: rgba(212,160,23,0.15);
  border: 1px solid rgba(212,160,23,0.3);
  border-radius: var(--radius-md);
  padding: 20px 28px;
  display: inline-block;
}

.technology__note p {
  font-size: 0.9rem;
  color: var(--color-gold-light);
  font-weight: 600;
}

/* ---------- PRODUCTS ---------- */
.products {
  padding: 120px 0;
  background: var(--color-white);
  text-align: center;
}

.products__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.products__card {
  background: var(--color-offwhite);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.4s ease;
  box-shadow: var(--shadow-sm);
}

.products__card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.products__card-img {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.products__card-emoji {
  font-size: 4rem;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2));
  transition: transform 0.4s ease;
}

.products__card:hover .products__card-emoji {
  transform: scale(1.15) rotate(-5deg);
}

.products__card-body {
  padding: 24px 20px;
  text-align: left;
}

.products__card-body h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}

.products__card-body p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ---------- MAIZURU / SDGs ---------- */
.maizuru {
  position: relative;
  padding: 140px 0;
  overflow: hidden;
  text-align: center;
}

.maizuru__parallax-bg {
  position: absolute;
  inset: -20% 0;
  background: linear-gradient(160deg, #2d5016 0%, #3a6b24 50%, #4a7c34 100%);
  z-index: 0;
}

.maizuru__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 1;
}

.maizuru__content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  margin: 0 auto;
}

.maizuru .section-label {
  color: rgba(255,255,255,0.5);
}

.maizuru__text {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.85);
  line-height: 2;
  margin-bottom: 32px;
}

.maizuru__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.maizuru__tag {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.9);
  padding: 10px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  backdrop-filter: blur(10px);
}

/* ---------- RECRUIT ---------- */
.recruit {
  padding: 120px 0;
  background: var(--color-beige);
  text-align: center;
}

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

.recruit__card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: left;
  box-shadow: var(--shadow-md);
  transition: all 0.4s ease;
  display: flex;
  flex-direction: column;
}

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

.recruit__card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.recruit__card-icon {
  font-size: 2rem;
}

.recruit__card-header h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
}

.recruit__card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 24px;
  flex: 1;
}

/* ---------- NEWS ---------- */
.news {
  padding: 100px 0;
  background: var(--color-white);
  text-align: center;
}

.news__list {
  max-width: 800px;
  margin: 40px auto 0;
  text-align: left;
}

.news__item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.news__item:hover {
  padding-left: 8px;
}

.news__date {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 500;
  flex-shrink: 0;
  min-width: 100px;
}

.news__tag {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 50px;
  flex-shrink: 0;
}

.news__tag--info {
  background: var(--color-primary-pale);
  color: var(--color-primary);
}

.news__tag--media {
  background: #e3f2fd;
  color: #1565c0;
}

.news__tag--event {
  background: #fff3e0;
  color: #e65100;
}

.news__text {
  font-size: 0.9rem;
  color: var(--color-text);
}

/* ---------- CONTACT ---------- */
.contact {
  padding: 120px 0;
  background: linear-gradient(160deg, #1a5c32 0%, #2d8a4e 100%);
  text-align: center;
}

.contact .section-label {
  color: rgba(255,255,255,0.5);
}

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

.contact__card {
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-lg);
  padding: 40px 28px;
  transition: all 0.4s ease;
}

.contact__card:hover {
  background: rgba(255,255,255,0.15);
  transform: translateY(-4px);
}

.contact__card-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.contact__card h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 12px;
}

.contact__card p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.75);
  line-height: 1.7;
}

.contact__phone {
  font-family: var(--font-serif);
  font-size: 1.5rem !important;
  font-weight: 700;
  color: var(--color-white) !important;
  margin-bottom: 4px;
}

.contact__email {
  font-size: 1.1rem !important;
  font-weight: 600;
  color: var(--color-white) !important;
}

.contact__hours {
  font-size: 0.8rem !important;
  color: rgba(255,255,255,0.5) !important;
}

/* ---------- FOOTER ---------- */
.footer {
  background: #0d1f15;
  color: rgba(255,255,255,0.7);
  padding: 80px 0 0;
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer__logo {
  margin-bottom: 16px;
}

.footer__logo-main {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--color-primary-light);
  letter-spacing: 0.1em;
}

.footer__logo-sub {
  display: block;
  font-size: 0.65rem;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.15em;
}

.footer__desc {
  font-size: 0.85rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.5);
}

.footer__links h4 {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
}

.footer__links ul li {
  margin-bottom: 10px;
}

.footer__links ul li a,
.footer__links ul li {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}

.footer__links ul li a:hover {
  color: var(--color-primary-light);
  padding-left: 4px;
}

.footer__bottom {
  padding: 24px 0;
  text-align: center;
}

.footer__bottom p {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.3);
}

/* ---------- BACK TO TOP ---------- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 80px;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.4s ease;
  z-index: 998;
}

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

.back-to-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-4px);
}

/* ---------- SCROLL ANIMATIONS ---------- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll[data-animation="fadeInDown"] {
  transform: translateY(-40px);
}

.animate-on-scroll[data-animation="fadeInLeft"] {
  transform: translateX(-60px);
}

.animate-on-scroll[data-animation="fadeInRight"] {
  transform: translateX(60px);
}

.animate-on-scroll[data-animation="scaleIn"] {
  transform: scale(0.7);
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* ---------- PARTICLE STYLES ---------- */
.particle {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  opacity: 0;
  animation: particleFloat linear infinite;
}

@keyframes particleFloat {
  0% {
    opacity: 0;
    transform: translateY(0) rotate(0deg);
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.6;
  }
  100% {
    opacity: 0;
    transform: translateY(-100vh) rotate(360deg);
  }
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .patent__pillars {
    grid-template-columns: repeat(2, 1fr);
  }

  .patent__pillars .patent__pillar:last-child {
    grid-column: span 2;
    max-width: 500px;
    margin: 0 auto;
  }

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

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

  .side-banners {
    display: none;
  }
}

@media (max-width: 768px) {
  .header__nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 360px;
    height: 100vh;
    background: var(--color-white);
    padding: 100px 32px 32px;
    transition: right 0.4s ease;
    box-shadow: var(--shadow-xl);
    z-index: 1000;
  }

  .header__nav.open {
    right: 0;
  }

  .header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }

  .header__nav-list a {
    color: var(--color-text) !important;
    padding: 16px 0;
    display: block;
    width: 100%;
    border-bottom: 1px solid var(--color-border);
    font-size: 1rem;
  }

  .header__nav-cta {
    margin-top: 16px;
    text-align: center;
  }

  .header__hamburger {
    display: flex;
  }

  .icon-nav__grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .patent__pillars .patent__pillar:last-child {
    grid-column: span 1;
    max-width: none;
  }

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

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

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

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

  .footer__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .patent__professor-card {
    flex-direction: column;
    text-align: center;
    padding: 32px 24px;
  }

  .patent__professor-info {
    text-align: center;
  }

  .hero__stats {
    gap: 20px;
  }

  .hero__stat-divider {
    display: none;
  }

  .about__highlight {
    flex-direction: column;
    text-align: center;
  }

  .news__item {
    flex-wrap: wrap;
    gap: 8px;
  }

  .news__date {
    min-width: auto;
  }

  .back-to-top {
    right: 20px;
    bottom: 20px;
  }

  .sp-hide {
    display: none;
  }
}

@media (max-width: 480px) {
  .icon-nav__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero__badge {
    font-size: 0.75rem;
    padding: 8px 16px;
  }

  .patent__only-badge-inner {
    width: 160px;
    height: 160px;
  }

  .patent__only-badge-main {
    font-size: 1.5rem;
  }
}

/* ---------- MOBILE NAV OVERLAY ---------- */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}