/* =============================================
   BIRD VISION - Award-Winning Design System
   ============================================= */

/* Custom Properties */
:root {
  --color-primary: #E94E4E;
  --color-primary-dark: #c93535;
  --color-primary-light: #ff6b6b;
  --color-black: #0a0a0a;
  --color-dark: #1a1a1a;
  --color-gray-900: #222;
  --color-gray-700: #444;
  --color-gray-500: #777;
  --color-gray-300: #bbb;
  --color-gray-200: #ddd;
  --color-gray-100: #f0f0f0;
  --color-gray-50: #f8f8f8;
  --color-white: #fff;

  --font-sans: "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  --font-display: "Noto Sans JP", sans-serif;

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);

  --header-height: 80px;
  --section-padding: clamp(80px, 10vw, 140px);
  --container-width: 1200px;
  --container-wide: 1400px;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-dark);
  background-color: var(--color-white);
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

ul, ol {
  list-style: none;
}

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

button {
  font-family: inherit;
}

/* =============================================
   Scroll Progress Bar
   ============================================= */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  z-index: 9999;
  transition: width 0.1s linear;
}

/* =============================================
   Loading Screen
   ============================================= */
.loader {
  position: fixed;
  inset: 0;
  background: var(--color-black);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s var(--ease-out-expo), visibility 0.8s;
}

.loader.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-text {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 900;
  color: var(--color-white);
  letter-spacing: 0.2em;
  overflow: hidden;
}

.loader-text span {
  display: inline-block;
  transform: translateY(100%);
  animation: loaderReveal 0.6s var(--ease-out-expo) forwards;
}

@keyframes loaderReveal {
  to { transform: translateY(0); }
}

/* =============================================
   Header
   ============================================= */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 clamp(20px, 4vw, 60px);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: background-color 0.4s ease, box-shadow 0.4s ease, transform 0.4s var(--ease-out-expo);
}

.header.is-scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-wide);
  margin: 0 auto;
}

.header-logo {
  font-size: 1.2rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  color: var(--color-dark);
  position: relative;
  z-index: 1001;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: clamp(24px, 3vw, 48px);
}

.header-nav a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-gray-500);
  letter-spacing: 0.04em;
  position: relative;
  transition: color 0.3s ease;
}

.header-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-primary);
  transition: width 0.3s var(--ease-out-expo);
}

.header-nav a:hover {
  color: var(--color-dark);
}

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

.header-contact {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 10px 28px;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: background-color 0.3s ease, transform 0.3s ease;
}

.header-contact:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-1px);
}

.header-contact .material-icons {
  font-size: 1rem;
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
  z-index: 1001;
}

.mobile-menu-btn span {
  display: block;
  width: 100%;
  height: 1.5px;
  background-color: var(--color-dark);
  transition: all 0.4s var(--ease-out-expo);
  transform-origin: center;
}

.mobile-menu-btn.is-active span:nth-child(1) {
  transform: translateY(8.5px) rotate(45deg);
}

.mobile-menu-btn.is-active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.mobile-menu-btn.is-active span:nth-child(3) {
  transform: translateY(-8.5px) rotate(-45deg);
}

/* Mobile Navigation Overlay */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--color-white);
  z-index: 999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s var(--ease-out-expo), visibility 0.5s;
}

.mobile-nav.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav a {
  display: block;
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 700;
  color: var(--color-dark);
  padding: 16px 0;
  transform: translateY(30px);
  opacity: 0;
  transition: transform 0.6s var(--ease-out-expo), opacity 0.6s ease, color 0.3s ease;
}

.mobile-nav.is-open a {
  transform: translateY(0);
  opacity: 1;
}

.mobile-nav a:hover {
  color: var(--color-primary);
}

.mobile-nav.is-open a:nth-child(1) { transition-delay: 0.1s; }
.mobile-nav.is-open a:nth-child(2) { transition-delay: 0.15s; }
.mobile-nav.is-open a:nth-child(3) { transition-delay: 0.2s; }
.mobile-nav.is-open a:nth-child(4) { transition-delay: 0.25s; }
.mobile-nav.is-open a:nth-child(5) { transition-delay: 0.3s; }
.mobile-nav.is-open a:nth-child(6) { transition-delay: 0.35s; }

/* =============================================
   Hero Section
   ============================================= */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  overflow: hidden;
  background: var(--color-black);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.7;
  transform: scale(1.1);
  transition: transform 8s linear;
}

.hero-bg img.is-loaded {
  transform: scale(1);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.2) 50%, transparent 100%);
  z-index: 2;
}

.hero-content {
  position: absolute;
  bottom: clamp(60px, 10vh, 140px);
  left: clamp(30px, 6vw, 100px);
  z-index: 10;
  color: var(--color-white);
}

.hero-eyebrow {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 20px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease 0.3s, transform 0.8s var(--ease-out-expo) 0.3s;
}

.hero-title {
  overflow: hidden;
}

.hero-title-line {
  display: block;
  font-size: clamp(3.5rem, 10vw, 8rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
  transform: translateY(110%);
  transition: transform 1s var(--ease-out-expo);
}

.hero-title-line:nth-child(2) {
  transition-delay: 0.15s;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.5vw, 1.3rem);
  font-weight: 400;
  margin-top: 24px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease 0.6s, transform 0.8s var(--ease-out-expo) 0.6s;
  letter-spacing: 0.1em;
}

.hero.is-visible .hero-eyebrow,
.hero.is-visible .hero-subtitle {
  opacity: 1;
  transform: translateY(0);
}

.hero.is-visible .hero-title-line {
  transform: translateY(0);
}

.hero-scroll {
  position: absolute;
  bottom: 30px;
  right: clamp(30px, 4vw, 60px);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--color-white);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  writing-mode: vertical-rl;
}

.hero-scroll::after {
  content: '';
  width: 1px;
  height: 60px;
  background: var(--color-white);
  animation: scrollLine 2s var(--ease-in-out) infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  50.1% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* =============================================
   Section Common
   ============================================= */
.section-label {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gray-500);
  margin-bottom: 16px;
}

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

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.section-watermark {
  font-size: clamp(4rem, 10vw, 9rem);
  font-weight: 900;
  color: rgba(0, 0, 0, 0.03);
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

.section-watermark--light {
  color: rgba(255, 255, 255, 0.05);
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
}

.container--wide {
  max-width: var(--container-wide);
}

/* =============================================
   About Section
   ============================================= */
.about {
  padding: var(--section-padding) 0;
  background: var(--color-white);
  overflow: hidden;
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 100px);
  align-items: center;
}

.about-images {
  position: relative;
  height: clamp(400px, 50vw, 600px);
}

.about-image {
  position: absolute;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out-expo);
}

.about-image:hover img {
  transform: scale(1.05);
}

.about-image-1 {
  top: 0;
  left: 0;
  width: 55%;
  height: 55%;
  border-radius: 120px;
  z-index: 3;
}

.about-image-2 {
  top: 15%;
  right: 0;
  width: 60%;
  height: 45%;
  border-radius: 24px;
  z-index: 2;
}

.about-image-3 {
  bottom: 0;
  left: 10%;
  width: 65%;
  height: 40%;
  border-radius: 24px;
  z-index: 1;
}

.about-content {
  padding: 20px 0;
}

.about-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.6;
  margin-bottom: 24px;
}

.about-text {
  font-size: 0.95rem;
  line-height: 2.1;
  color: var(--color-gray-500);
  margin-bottom: 40px;
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: all 0.3s var(--ease-out-expo);
  cursor: pointer;
  border: none;
  font-family: inherit;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 16px 36px;
  border-radius: 100px;
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(233, 78, 78, 0.3);
}

.btn--primary .material-icons {
  font-size: 1.1rem;
}

.btn--outline {
  background: transparent;
  color: var(--color-dark);
  padding: 16px 36px;
  border-radius: 100px;
  border: 1.5px solid var(--color-gray-200);
}

.btn--outline:hover {
  border-color: var(--color-dark);
  transform: translateY(-2px);
}

.btn--outline-white {
  background: transparent;
  color: var(--color-white);
  padding: 16px 36px;
  border-radius: 100px;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
}

.btn--outline-white:hover {
  border-color: var(--color-white);
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn--arrow {
  background: none;
  color: var(--color-dark);
  padding: 0;
  gap: 12px;
}

.btn--arrow::after {
  content: '';
  width: 40px;
  height: 1px;
  background: var(--color-dark);
  transition: width 0.3s var(--ease-out-expo);
}

.btn--arrow:hover::after {
  width: 60px;
}

/* =============================================
   Strengths Section
   ============================================= */
.strengths {
  position: relative;
  padding: var(--section-padding) 0;
  background: var(--color-black);
  color: var(--color-white);
  overflow: hidden;
}

.strengths-bg-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.03;
  background-image: radial-gradient(circle at 1px 1px, white 1px, transparent 1px);
  background-size: 40px 40px;
}

.strengths-header {
  margin-bottom: clamp(40px, 6vw, 80px);
}

.strengths-header-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-top: 24px;
}

.strengths-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  line-height: 1.5;
}

.strengths-description {
  font-size: 0.9rem;
  line-height: 2.1;
  color: rgba(255, 255, 255, 0.6);
}

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

.strength-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  overflow: hidden;
  transition: transform 0.5s var(--ease-out-expo), border-color 0.3s ease;
}

.strength-card:hover {
  transform: translateY(-8px);
  border-color: rgba(255, 255, 255, 0.15);
}

.strength-card-image {
  aspect-ratio: 4/3;
  overflow: hidden;
}

.strength-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out-expo);
}

.strength-card:hover .strength-card-image img {
  transform: scale(1.08);
}

.strength-card-content {
  padding: 28px;
}

.strength-card-number {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.strength-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
}

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

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

.works-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: clamp(40px, 6vw, 70px);
}

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

.work-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  cursor: pointer;
  group: true;
}

.work-card-image {
  aspect-ratio: 4/3;
  overflow: hidden;
}

.work-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease-out-expo);
}

.work-card:hover .work-card-image img {
  transform: scale(1.1);
}

.work-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.7) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.work-card:hover .work-card-overlay {
  opacity: 1;
}

.work-card-title {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 24px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-white);
  transform: translateY(10px);
  opacity: 0;
  transition: transform 0.4s var(--ease-out-expo), opacity 0.4s ease;
}

.work-card:hover .work-card-title {
  transform: translateY(0);
  opacity: 1;
}

/* Static card title (mobile fallback) */
.work-card-label {
  padding: 16px 4px;
  font-size: 0.9rem;
  font-weight: 500;
  text-align: center;
  color: var(--color-dark);
}

/* =============================================
   Services Section
   ============================================= */
.services {
  padding: var(--section-padding) 0;
  background: var(--color-gray-50);
}

.services-header {
  text-align: center;
  margin-bottom: clamp(50px, 6vw, 80px);
}

.services-header .section-title {
  margin-bottom: 16px;
}

.services-header .section-desc {
  font-size: 0.95rem;
  color: var(--color-gray-500);
  max-width: 600px;
  margin: 0 auto;
}

.service-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--color-white);
  border-radius: 24px;
  overflow: hidden;
  margin-bottom: 24px;
  box-shadow: 0 4px 40px rgba(0, 0, 0, 0.04);
  transition: box-shadow 0.4s ease;
}

.service-item:hover {
  box-shadow: 0 12px 50px rgba(0, 0, 0, 0.08);
}

.service-item:nth-child(even) {
  direction: rtl;
}

.service-item:nth-child(even) > * {
  direction: ltr;
}

.service-image {
  aspect-ratio: 4/3;
  overflow: hidden;
}

.service-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease-out-expo);
}

.service-item:hover .service-image img {
  transform: scale(1.05);
}

.service-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(30px, 4vw, 60px);
}

.service-number {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.15em;
  margin-bottom: 12px;
}

.service-title {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.service-text {
  font-size: 0.9rem;
  line-height: 2;
  color: var(--color-gray-500);
}

/* =============================================
   Steps Section
   ============================================= */
.steps {
  padding: var(--section-padding) 0;
  background: var(--color-white);
}

.steps-header {
  text-align: center;
  margin-bottom: clamp(40px, 6vw, 70px);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 50px;
  left: 16.6%;
  right: 16.6%;
  height: 1px;
  background: var(--color-gray-200);
}

.step-card {
  text-align: center;
  position: relative;
}

.step-number {
  width: 100px;
  height: 100px;
  margin: 0 auto 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gray-50);
  border-radius: 50%;
  position: relative;
  z-index: 1;
  transition: background 0.3s ease, transform 0.3s var(--ease-out-expo);
}

.step-card:hover .step-number {
  background: rgba(233, 78, 78, 0.08);
  transform: scale(1.05);
}

.step-number .material-icons {
  font-size: 2rem;
  color: var(--color-primary);
}

.step-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.step-text {
  font-size: 0.85rem;
  color: var(--color-gray-500);
  line-height: 1.8;
}

/* =============================================
   Business Section
   ============================================= */
.business {
  padding: var(--section-padding) 0 0;
  background: var(--color-white);
  overflow: hidden;
}

.business-header {
  position: relative;
  margin-bottom: 40px;
}

.business-card {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: stretch;
}

.business-content {
  background: var(--color-primary);
  color: var(--color-white);
  padding: clamp(40px, 5vw, 70px);
  border-radius: 0 40px 0 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.business-subtitle {
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  opacity: 0.8;
  margin-bottom: 12px;
}

.business-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 900;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
}

.business-text {
  font-size: 0.9rem;
  line-height: 2;
  opacity: 0.9;
}

.business-image {
  position: relative;
  margin-left: -40px;
  margin-top: 40px;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

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

/* =============================================
   Company Section
   ============================================= */
.company {
  padding: var(--section-padding) 0;
  background: var(--color-white);
}

.company-header {
  text-align: right;
  margin-bottom: clamp(40px, 5vw, 60px);
}

.company-table {
  width: 100%;
}

.company-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-gray-100);
  font-size: 0.95rem;
  transition: background-color 0.3s ease;
}

.company-row:first-child {
  border-top: 1px solid var(--color-gray-100);
}

.company-row:hover {
  background: var(--color-gray-50);
}

.company-row-label {
  font-weight: 600;
  color: var(--color-dark);
}

.company-row-value {
  color: var(--color-gray-500);
  line-height: 1.8;
}

.company-row-value p {
  margin-bottom: 4px;
}

.company-row-value p:last-child {
  margin-bottom: 0;
}

/* =============================================
   News Section (Top Page)
   ============================================= */
.news {
  padding: var(--section-padding) 0;
  background: var(--color-gray-50);
}

.news-inner {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 60px;
}

.news-header-side {
  position: relative;
}

.news-label-vertical {
  writing-mode: vertical-rl;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  margin-top: 80px;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.news-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 28px;
  padding: 0;
  transition: opacity 0.3s ease;
}

.news-item:hover {
  opacity: 0.75;
}

.news-item-image {
  aspect-ratio: 3/2;
  border-radius: 12px;
  overflow: hidden;
}

.news-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease-out-expo);
}

.news-item:hover .news-item-image img {
  transform: scale(1.05);
}

.news-item-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.news-item-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.news-item-date {
  font-size: 0.8rem;
  color: var(--color-gray-500);
  letter-spacing: 0.05em;
}

.news-item-tag {
  font-size: 0.7rem;
  font-weight: 500;
  background: var(--color-dark);
  color: var(--color-white);
  padding: 3px 12px;
  border-radius: 100px;
  letter-spacing: 0.03em;
}

.news-item-title {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
  margin-bottom: 6px;
}

.news-item-text {
  font-size: 0.85rem;
  color: var(--color-gray-500);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* =============================================
   CTA Section
   ============================================= */
.cta {
  position: relative;
  padding: clamp(80px, 12vw, 160px) 0;
  background: var(--color-black);
  overflow: hidden;
}

.cta-bg {
  position: absolute;
  inset: 0;
}

.cta-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.cta-text {
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.8;
  margin-bottom: 40px;
}

/* =============================================
   Footer
   ============================================= */
.footer {
  background: var(--color-dark);
}

.footer-main {
  background: var(--color-white);
  border-radius: 0 60px 0 0;
  padding: clamp(50px, 8vw, 90px) 0 40px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
}

.footer-logo {
  display: block;
  font-size: 1.4rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.footer-company {
  font-size: 0.9rem;
  margin-bottom: 4px;
}

.footer-address {
  font-size: 0.85rem;
  color: var(--color-gray-500);
}

.footer-nav {
  display: flex;
  flex-direction: column;
}

.footer-nav-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-gray-100);
  font-size: 0.9rem;
  transition: color 0.3s ease, padding-left 0.3s var(--ease-out-expo);
}

.footer-nav-item:hover {
  color: var(--color-primary);
  padding-left: 8px;
}

.footer-nav-item .material-icons {
  font-size: 1rem;
  color: var(--color-gray-300);
  transition: color 0.3s ease, transform 0.3s var(--ease-out-expo);
}

.footer-nav-item:hover .material-icons {
  color: var(--color-primary);
  transform: translateX(4px);
}

.footer-bottom {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 30px clamp(20px, 4vw, 40px) 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-privacy {
  font-size: 0.8rem;
  color: var(--color-gray-500);
  transition: color 0.3s ease;
}

.footer-privacy:hover {
  color: var(--color-primary);
}

.footer-copyright {
  font-size: 0.75rem;
  color: var(--color-gray-300);
}

.footer-social {
  display: flex;
  gap: 16px;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-gray-200);
  color: var(--color-gray-500);
  transition: all 0.3s ease;
}

.footer-social a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.footer-social a svg {
  width: 18px;
  height: 18px;
}

/* =============================================
   Sub-Page Header
   ============================================= */
.page-header {
  padding: clamp(120px, 15vw, 180px) 0 clamp(50px, 6vw, 80px);
  background: var(--color-white);
  position: relative;
  overflow: hidden;
}

.page-header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
}

.page-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 8px;
}

.page-title-en {
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 900;
  color: rgba(0, 0, 0, 0.03);
  line-height: 1;
  margin-top: -10px;
}

/* =============================================
   News Page
   ============================================= */
.news-page-list {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: clamp(40px, 5vw, 60px) clamp(20px, 4vw, 40px) var(--section-padding);
}

.news-list-item {
  padding: clamp(28px, 3vw, 40px) 0;
  border-bottom: 1px solid var(--color-gray-100);
  transition: padding-left 0.3s var(--ease-out-expo);
}

.news-list-item:first-child {
  border-top: 1px solid var(--color-gray-100);
}

.news-list-item:hover {
  padding-left: 12px;
}

.news-list-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.news-list-date {
  font-size: 0.85rem;
  color: var(--color-gray-500);
  letter-spacing: 0.05em;
}

.news-list-tag {
  font-size: 0.7rem;
  font-weight: 500;
  background: var(--color-dark);
  color: var(--color-white);
  padding: 3px 12px;
  border-radius: 100px;
}

.news-list-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.6;
}

.news-list-text {
  font-size: 0.9rem;
  color: var(--color-gray-500);
  line-height: 1.8;
}

.news-list-text a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.news-list-text a:hover {
  text-decoration: none;
}

/* =============================================
   Contact Page
   ============================================= */
.contact-section {
  padding: 0 0 var(--section-padding);
}

.contact-inner {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
}

.contact-info {
  margin-bottom: clamp(40px, 5vw, 60px);
}

.contact-info-title {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  font-weight: 700;
  line-height: 1.7;
  margin-bottom: 16px;
}

.contact-info-text {
  font-size: 0.9rem;
  color: var(--color-gray-500);
  line-height: 2;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.required {
  color: var(--color-primary);
  font-size: 0.8rem;
}

.form-input,
.form-textarea,
.form-select {
  padding: 14px 18px;
  border: 1.5px solid var(--color-gray-200);
  border-radius: 10px;
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--color-white);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  -webkit-appearance: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(233, 78, 78, 0.1);
}

.form-textarea {
  min-height: 180px;
  resize: vertical;
}

.form-radio-group {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.form-radio {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  cursor: pointer;
}

.form-radio input[type="radio"] {
  accent-color: var(--color-primary);
  width: 18px;
  height: 18px;
}

.form-checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
  accent-color: var(--color-primary);
  width: 18px;
  height: 18px;
}

.form-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 18px 60px;
  border: none;
  border-radius: 100px;
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  margin: 12px auto 0;
  transition: background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.form-submit:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(233, 78, 78, 0.3);
}

.form-privacy-link {
  font-size: 0.85rem;
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.form-privacy-link:hover {
  text-decoration: none;
}

/* =============================================
   Privacy Policy Page
   ============================================= */
.privacy-section {
  padding: 0 0 var(--section-padding);
}

.privacy-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
}

.privacy-intro {
  font-size: 0.95rem;
  line-height: 2;
  color: var(--color-gray-500);
  margin-bottom: 40px;
}

.privacy-content h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 48px 0 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
}

.privacy-content h2:first-child {
  margin-top: 0;
}

.privacy-content p {
  font-size: 0.9rem;
  color: var(--color-gray-500);
  margin-bottom: 14px;
  line-height: 2;
}

.privacy-content ul {
  margin: 14px 0 14px 24px;
}

.privacy-content li {
  font-size: 0.9rem;
  color: var(--color-gray-500);
  margin-bottom: 8px;
  line-height: 1.9;
  list-style: disc;
}

/* =============================================
   Works Page (Portfolio)
   ============================================= */
.works-page {
  padding: 0 0 var(--section-padding);
}

.works-page-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: clamp(40px, 5vw, 60px) clamp(20px, 4vw, 40px) 0;
}

.works-page-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  background: var(--color-white);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
  transition: transform 0.5s var(--ease-out-expo), box-shadow 0.5s ease;
}

.works-page-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.1);
}

.works-page-card-image {
  aspect-ratio: 4/3;
  overflow: hidden;
}

.works-page-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease-out-expo);
}

.works-page-card:hover .works-page-card-image img {
  transform: scale(1.08);
}

.works-page-card-body {
  padding: 24px;
}

.works-page-card-category {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.works-page-card-title {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 8px;
}

.works-page-card-desc {
  font-size: 0.85rem;
  color: var(--color-gray-500);
  line-height: 1.7;
}

/* =============================================
   Services Page
   ============================================= */
.services-page {
  padding: 0 0 var(--section-padding);
}

.services-page-intro {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: clamp(40px, 5vw, 60px) clamp(20px, 4vw, 40px);
  text-align: center;
}

.services-page-intro-text {
  font-size: 0.95rem;
  color: var(--color-gray-500);
  line-height: 2;
  max-width: 700px;
  margin: 0 auto;
}

.services-page-item {
  max-width: var(--container-width);
  margin: 0 auto clamp(60px, 8vw, 100px);
  padding: 0 clamp(20px, 4vw, 40px);
}

.services-page-item-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-radius: 24px;
  overflow: hidden;
  background: var(--color-white);
  box-shadow: 0 4px 40px rgba(0, 0, 0, 0.04);
}

.services-page-item:nth-child(even) .services-page-item-inner {
  direction: rtl;
}

.services-page-item:nth-child(even) .services-page-item-inner > * {
  direction: ltr;
}

.services-page-image {
  aspect-ratio: auto;
  min-height: 350px;
  overflow: hidden;
}

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

.services-page-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(30px, 4vw, 60px);
}

.services-page-number {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.15em;
  margin-bottom: 12px;
}

.services-page-title {
  font-size: clamp(1.4rem, 2.5vw, 1.8rem);
  font-weight: 700;
  margin-bottom: 20px;
}

.services-page-text {
  font-size: 0.9rem;
  line-height: 2;
  color: var(--color-gray-500);
  margin-bottom: 28px;
}

.services-page-features {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.services-page-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--color-gray-700);
}

.services-page-feature .material-icons {
  font-size: 1rem;
  color: var(--color-primary);
}

/* =============================================
   Animation Classes
   ============================================= */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal-scale.is-visible {
  opacity: 1;
  transform: scale(1);
}

/* Stagger children */
.stagger > * {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease-out-expo), transform 0.6s var(--ease-out-expo);
}

.stagger.is-visible > *:nth-child(1) { opacity: 1; transform: translateY(0); transition-delay: 0s; }
.stagger.is-visible > *:nth-child(2) { opacity: 1; transform: translateY(0); transition-delay: 0.1s; }
.stagger.is-visible > *:nth-child(3) { opacity: 1; transform: translateY(0); transition-delay: 0.2s; }
.stagger.is-visible > *:nth-child(4) { opacity: 1; transform: translateY(0); transition-delay: 0.3s; }
.stagger.is-visible > *:nth-child(5) { opacity: 1; transform: translateY(0); transition-delay: 0.4s; }
.stagger.is-visible > *:nth-child(6) { opacity: 1; transform: translateY(0); transition-delay: 0.5s; }

/* =============================================
   Responsive Design
   ============================================= */
@media (max-width: 1024px) {
  .about-inner {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .about-images {
    max-width: 500px;
    margin: 0 auto;
  }

  .strengths-header-row {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

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

  .service-item {
    grid-template-columns: 1fr;
  }

  .service-item:nth-child(even) {
    direction: ltr;
  }

  .service-image {
    aspect-ratio: 16/9;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .steps-grid::before {
    display: none;
  }

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

  .business-image {
    margin-left: 0;
    margin-top: 20px;
  }

  .news-inner {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .news-label-vertical {
    writing-mode: horizontal-tb;
    margin-top: 0;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .services-page-item-inner {
    grid-template-columns: 1fr;
  }

  .services-page-item:nth-child(even) .services-page-item-inner {
    direction: ltr;
  }

  .services-page-image {
    min-height: 250px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }

  .header-nav,
  .header-contact {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  /* Hero mobile */
  .hero {
    height: 100vh;
    min-height: 600px;
  }

  .hero-content {
    bottom: 60px;
    left: 24px;
  }

  .hero-scroll {
    display: none;
  }

  /* About mobile */
  .about-images {
    height: 320px;
  }

  .about-image-1 {
    width: 50%;
    height: 50%;
    border-radius: 60px;
  }

  /* Strengths mobile */
  .strengths-grid {
    grid-template-columns: 1fr;
  }

  /* Works mobile */
  .works-grid {
    grid-template-columns: 1fr;
  }

  .work-card-overlay,
  .work-card-title {
    display: none;
  }

  .work-card-label {
    display: block;
  }

  /* Steps mobile */
  .step-card {
    text-align: left;
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 20px;
  }

  .step-number {
    width: 80px;
    height: 80px;
    margin: 0;
  }

  /* Company mobile */
  .company-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .company-header {
    text-align: left;
  }

  /* News mobile */
  .news-item {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .news-item-image {
    aspect-ratio: 16/9;
  }

  /* Footer mobile */
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .footer-main {
    border-radius: 0 40px 0 0;
  }

  /* Form mobile */
  .form-row {
    grid-template-columns: 1fr;
  }

  /* Works page mobile */
  .works-page-grid {
    grid-template-columns: 1fr;
  }

  /* CTA mobile */
  .cta-text {
    font-size: 1.2rem;
  }
}

@media (max-width: 480px) {
  .hero-content {
    bottom: 40px;
    left: 20px;
  }

  .about-images {
    height: 260px;
  }

  .about-image-1 {
    width: 45%;
    height: 50%;
    border-radius: 40px;
  }

  .about-image-2 {
    width: 55%;
    height: 40%;
  }

  .about-image-3 {
    width: 60%;
    height: 38%;
  }
}

/* Desktop: hide mobile-only elements */
@media (min-width: 769px) {
  .work-card-label {
    display: none;
  }
}