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

:root {
  /* Colors */
  --color-bg:       #ffffff;
  --color-bg-dark:  #0e0e0e;
  --color-bg-gray:  #f4f4f4;
  --color-text:     #111111;
  --color-text-sub: #666666;
  --color-text-light: #999999;
  --color-border:   #e0e0e0;
  --color-accent:   #1a5c3f;   /* 深緑 アクセント */
  --color-accent-light: rgba(26, 92, 63, 0.08);

  /* Typography */
  --font-sans: 'Noto Sans JP', 'Helvetica Neue', Arial, sans-serif;

  /* Spacing */
  --section-py: 100px;
  --container-max: 1140px;
  --container-px: 40px;

  /* Transitions */
  --transition: 0.3s ease;
}

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

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

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

a:hover {
  opacity: 0.7;
}

ul {
  list-style: none;
}

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

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

.section {
  padding: var(--section-py) 0;
}

.section--dark {
  background-color: var(--color-bg-dark);
}

.section__label {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-bottom: 20px;
}

.section__label--light {
  color: rgba(255,255,255,0.4);
}

.section__heading {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
  margin-bottom: 24px;
}

.section__heading--light {
  color: #ffffff;
}

.section__desc {
  font-size: 0.95rem;
  color: var(--color-text-sub);
  line-height: 1.9;
  margin-bottom: 60px;
}

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

.text--accent {
  color: var(--color-accent);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-text);
  color: #ffffff;
  border-color: var(--color-text);
}

.btn--primary:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  opacity: 1;
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-text);
}

.btn--ghost:hover {
  background-color: var(--color-text);
  color: #ffffff;
  opacity: 1;
}

.btn--lg {
  padding: 18px 48px;
  font-size: 0.95rem;
}

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition), box-shadow var(--transition);
}

.header.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}

.header__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-px);
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-text);
}

.header__nav-list {
  display: flex;
  gap: 40px;
}

.header__nav-list a {
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--color-text-sub);
  transition: color var(--transition);
}

.header__nav-list a:hover {
  color: var(--color-text);
  opacity: 1;
}

.header__menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.header__menu-btn span {
  display: block;
  width: 24px;
  height: 1.5px;
  background-color: var(--color-text);
  transition: transform var(--transition), opacity var(--transition);
}

.header__menu-btn.active span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.header__menu-btn.active span:nth-child(2) {
  opacity: 0;
}
.header__menu-btn.active span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ============================================================
   MOBILE NAV
   ============================================================ */
.mobile-nav {
  position: fixed;
  top: 68px;
  left: 0;
  width: 100%;
  background-color: #ffffff;
  border-bottom: 1px solid var(--color-border);
  z-index: 99;
  transform: translateY(-100%);
  opacity: 0;
  transition: transform 0.35s ease, opacity 0.35s ease;
  pointer-events: none;
}

.mobile-nav.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav ul {
  padding: 24px var(--container-px);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.mobile-nav__link {
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--color-text-sub);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  height: 100vh;
  min-height: 640px;
  display: flex;
  align-items: center;
  padding-top: 68px;
  position: relative;
  overflow: hidden;
  background-color: #ffffff;
  /* 微細なグリッドパターン */
  background-image: radial-gradient(circle, #e8e8e8 1px, transparent 1px);
  background-size: 40px 40px;
}

.hero__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 40px var(--container-px) 60px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}

.hero__label {
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-bottom: 28px;
}

.hero__heading {
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  color: var(--color-text);
}

.hero__heading--accent {
  color: var(--color-accent);
  display: block;
  margin-top: 8px;
}

.hero__sub {
  font-size: 0.9rem;
  color: var(--color-text-sub);
  line-height: 1.9;
  margin-bottom: 44px;
}

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

/* Hero Visual */
.hero__right {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__visual {
  position: relative;
  width: 420px;
  height: 420px;
  max-width: 100%;
}

.hero__visual-shape {
  position: absolute;
  border-radius: 50%;
}

.hero__visual-shape--1 {
  width: 320px;
  height: 320px;
  top: 50px;
  left: 50px;
  background: linear-gradient(135deg, #f0f0f0 0%, #e8e8e8 100%);
  opacity: 0.6;
}

.hero__visual-shape--2 {
  width: 200px;
  height: 200px;
  top: 20px;
  right: 20px;
  background: linear-gradient(135deg, #e6f0eb 0%, #cce0d5 100%);
  opacity: 0.65;
}

.hero__visual-shape--3 {
  width: 120px;
  height: 120px;
  bottom: 40px;
  left: 30px;
  background: linear-gradient(135deg, #1a5c3f 0%, #267a55 100%);
  opacity: 0.12;
}

.hero__visual-line {
  position: absolute;
  background-color: var(--color-border);
}

.hero__visual-line--1 {
  width: 1px;
  height: 200px;
  top: 110px;
  left: 210px;
  transform: rotate(30deg);
}

.hero__visual-line--2 {
  width: 1px;
  height: 150px;
  top: 150px;
  left: 260px;
  transform: rotate(-20deg);
}

.hero__visual-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-text);
  text-align: center;
  line-height: 1.5;
  opacity: 0.1;
  white-space: nowrap;
}

/* Scroll Indicator */
.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: var(--container-px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.hero__scroll span {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-light);
  writing-mode: vertical-rl;
}

.hero__scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--color-text-light), transparent);
  animation: scrollLine 1.8s ease-in-out infinite;
}

@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; }
}

/* ============================================================
   ABOUT
   ============================================================ */
.about {
  background-color: #f7f7f7;
}

.about__inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
}

.about__left .section__heading {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  position: sticky;
  top: 100px;
}

.about__lead {
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.9;
  margin-bottom: 28px;
  color: var(--color-text);
}

.about__body {
  font-size: 0.9rem;
  color: var(--color-text-sub);
  line-height: 1.95;
  margin-bottom: 20px;
}

.about__body--em {
  font-weight: 500;
  color: var(--color-text);
  font-size: 0.95rem;
  margin-top: 8px;
}

/* About ビジュアル画像グリッド */
.about__visuals {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 64px;
}

.about__visual-img {
  overflow: hidden;
  border-radius: 2px;
}

.about__visual-img img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.about__visual-img:hover img {
  transform: scale(1.03);
}

.about__keywords {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 28px 0;
  padding: 24px 28px;
  background-color: #ffffff;
  border-left: 2px solid var(--color-accent);
}

.about__keyword {
  font-size: 0.85rem;
  color: var(--color-text-sub);
  letter-spacing: 0.02em;
}

.about__keyword strong {
  color: var(--color-text);
  font-weight: 700;
}

/* ============================================================
   SERVICE (事業内容) — 横並びレイアウト
   ============================================================ */

/* リスト外包 */
.biz-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--color-border);
}

/* 1件の行 */
.biz-item {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  min-height: 360px;
  border-bottom: 1px solid var(--color-border);
}

/* 左右交互に逆転 */
.biz-item--reverse {
  grid-template-columns: 1.3fr 1fr;
}

.biz-item--reverse .biz-item__visual {
  order: 2;
}

.biz-item--reverse .biz-item__body {
  order: 1;
}

/* 左側: 抽象ビジュアルエリア */
.biz-item__visual {
  position: relative;
  overflow: hidden;
  background-color: #f7f7f7;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 画像ビジュアル */
.biz-item__visual--img {
  background: none;
  padding: 0;
}

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

/* 各アイテムの背景グラデーション */
.biz-item__visual--01 { background: linear-gradient(135deg, #f0f5f2 0%, #e8f0eb 100%); }
.biz-item__visual--02 { background: linear-gradient(135deg, #f5f5f5 0%, #ebebeb 100%); }
.biz-item__visual--03 { background: linear-gradient(135deg, #f2f4f0 0%, #eaede7 100%); }
.biz-item__visual--04 { background: linear-gradient(135deg, #f5f5f3 0%, #ececea 100%); }
.biz-item__visual--05 { background: linear-gradient(135deg, #f0f5f2 0%, #e5ede8 100%); }

/* 抽象図形共通 */
.biz-visual__shape {
  position: absolute;
  pointer-events: none;
}

/* 大円 */
.biz-visual__shape--circle {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(26, 92, 63, 0.07);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* リング */
.biz-visual__shape--ring {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  border: 1.5px solid rgba(26, 92, 63, 0.18);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* 矩形 */
.biz-visual__shape--rect {
  width: 180px;
  height: 120px;
  border: 1.5px solid rgba(0,0,0,0.1);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(8deg);
}

/* 断線 */
.biz-visual__shape--line {
  width: 120px;
  height: 1px;
  background: rgba(26, 92, 63, 0.25);
  top: calc(50% + 60px);
  left: 50%;
  transform: translateX(-50%);
}

/* 三角形 */
.biz-visual__shape--tri {
  width: 0;
  height: 0;
  border-left: 80px solid transparent;
  border-right: 80px solid transparent;
  border-bottom: 140px solid rgba(26, 92, 63, 0.07);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* ドットグリッド */
.biz-visual__shape--dot-grid {
  width: 120px;
  height: 120px;
  background-image: radial-gradient(circle, rgba(26,92,63,0.2) 1px, transparent 1px);
  background-size: 16px 16px;
  bottom: 32px;
  right: 32px;
}

/* クロス */
.biz-visual__shape--cross {
  width: 1px;
  height: 140px;
  background: rgba(0,0,0,0.12);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.biz-visual__shape--cross::after {
  content: '';
  display: block;
  width: 140px;
  height: 1px;
  background: rgba(0,0,0,0.12);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* 小円 */
.biz-visual__shape--circle-sm {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(26, 92, 63, 0.1);
  bottom: 40px;
  left: 40px;
}

/* 弧 */
.biz-visual__shape--arc {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 1.5px solid rgba(26, 92, 63, 0.15);
  border-bottom-color: transparent;
  border-left-color: transparent;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-30deg);
}

/* ビジュアル内のラベルテキスト */
.biz-visual__label {
  position: relative;
  z-index: 1;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: rgba(26, 92, 63, 0.5);
  text-align: center;
  line-height: 1.7;
  text-transform: uppercase;
}

/* 右側: テキストエリア */
.biz-item__body {
  padding: 56px 60px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0;
}

/* メタ行（番号 + 英語名） */
.biz-item__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--color-text-light);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.biz-item__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border: 1px solid var(--color-accent);
  border-radius: 50%;
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: 0;
  flex-shrink: 0;
}

/* 事業名見出し */
.biz-item__title {
  font-size: clamp(1.3rem, 2.2vw, 1.75rem);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}

/* 本文 */
.biz-item__text {
  font-size: 0.9rem;
  color: var(--color-text-sub);
  line-height: 2;
  margin-bottom: 28px;
}

/* タグ列 */
.biz-item__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.biz-item__tags span {
  font-size: 0.75rem;
  color: var(--color-text-sub);
  border: 1px solid var(--color-border);
  padding: 4px 14px;
  letter-spacing: 0.04em;
  background-color: transparent;
  transition: border-color var(--transition), color var(--transition);
}

.biz-item__tags span:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* レスポンシブ */
@media (max-width: 860px) {
  .biz-item,
  .biz-item--reverse {
    grid-template-columns: 1fr;
  }
  .biz-item__visual {
    min-height: 220px;
    order: 0 !important;
  }
  .biz-item__body {
    order: 1 !important;
    padding: 40px 32px;
  }
}

/* ============================================================
   SERVICE DETAIL  —  タブ + 4カラムカード
   ============================================================ */

/* セクション見出しのサブテキスト */
.section__heading--sub {
  font-size: 0.85em;
  font-weight: 400;
  color: var(--color-text-sub);
  margin-left: 12px;
  letter-spacing: 0.05em;
}

/* --- 4-column card grid --- */
.sd-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-left: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.sd-card {
  padding: 32px 28px 36px;
  border-right: 1px solid var(--color-border);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg);
  transition: background-color var(--transition);
  position: relative;
}

.sd-card::before {
  content: '';
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background-color: transparent;
  transition: background-color var(--transition);
}

.sd-card {
  padding: 32px 28px 36px;
  border-right: 1px solid var(--color-border);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg);
  transition: background-color var(--transition);
  position: relative;
}

.sd-card--active {
  background-color: #f9f9f9;
}

.sd-card:hover {
  background-color: #fafafa;
}


.sd-card__header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.sd-card__num {
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  flex-shrink: 0;
}

.sd-card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

.sd-card__list {
  display: flex;
  flex-direction: column;
  gap: 11px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.sd-card__list li {
  font-size: 0.84rem;
  color: var(--color-text-sub);
  padding-left: 14px;
  position: relative;
  line-height: 1.6;
}

.sd-card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 5px;
  height: 1px;
  background-color: var(--color-text-light);
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .sd-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .sd-cards {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   COMPANY
   ============================================================ */
.company {
  background-color: #ffffff;
}

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

.company__table-wrap {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  padding: 40px;
}

.company__table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.company__table th,
.company__table td {
  padding: 18px 0;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
  line-height: 1.8;
}

.company__table tr:last-child th,
.company__table tr:last-child td {
  border-bottom: none;
}

.company__table th {
  width: 120px;
  font-weight: 500;
  color: var(--color-text-sub);
  white-space: nowrap;
  padding-right: 24px;
}

.company__table td {
  color: var(--color-text);
}

.company__table td a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.company__map {
  height: 400px;
  background-color: var(--color-border);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.company__map iframe {
  width: 100%;
  height: 100%;
  display: block;
}

@media (max-width: 768px) {
  .company__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .company__table-wrap {
    padding: 24px 20px;
  }
  .company__map {
    height: 280px;
  }
}

/* ============================================================
   CTA BAND
   ============================================================ */
.cta-band {
  background-color: var(--color-bg-gray);
  padding: 80px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.cta-band__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.cta-band__label {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.cta-band__heading {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-band__body {
  font-size: 0.875rem;
  color: var(--color-text-sub);
  line-height: 1.8;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact__form {
  max-width: 760px;
  margin: 0 auto;
}

.contact__form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

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

.contact__form-group--full {
  margin-bottom: 24px;
}

.contact__label {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-text);
}

.required {
  color: var(--color-accent);
  margin-left: 4px;
}

.contact__input,
.contact__select,
.contact__textarea {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--color-text);
  background-color: #f8f8f8;
  border: 1px solid #d8d8d8;
  border-radius: 0;
  outline: none;
  transition: border-color var(--transition), background-color var(--transition), box-shadow var(--transition);
  appearance: none;
  -webkit-appearance: none;
}

.contact__input:focus,
.contact__select:focus,
.contact__textarea:focus {
  border-color: var(--color-text);
  background-color: #ffffff;
  box-shadow: 0 0 0 3px rgba(0,0,0,0.04);
}

.contact__input::placeholder,
.contact__textarea::placeholder {
  color: var(--color-text-light);
}

.contact__select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23999' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
  cursor: pointer;
}

.contact__textarea {
  resize: vertical;
  min-height: 160px;
}

.contact__form-submit {
  text-align: center;
  margin-top: 40px;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background-color: var(--color-bg-dark);
  color: rgba(255,255,255,0.7);
  padding: 64px 0 32px;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 48px;
  gap: 40px;
}

.footer__logo {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #ffffff;
  display: block;
  margin-bottom: 12px;
}

.footer__tagline {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.05em;
}

.footer__nav ul {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.footer__nav a {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.08em;
  transition: color var(--transition);
}

.footer__nav a:hover {
  color: rgba(255,255,255,0.9);
  opacity: 1;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  gap: 20px;
  flex-wrap: wrap;
}

.footer__copy {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.25);
  letter-spacing: 0.05em;
}

.footer__links a {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.25);
  letter-spacing: 0.05em;
  transition: color var(--transition);
}

.footer__links a:hover {
  color: rgba(255,255,255,0.6);
  opacity: 1;
}

/* ============================================================
   PAGE TOP
   ============================================================ */
.page-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background-color: var(--color-text);
  color: #ffffff;
  border: none;
  cursor: pointer;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition), transform var(--transition), background-color var(--transition);
  z-index: 50;
}

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

.page-top:hover {
  background-color: var(--color-accent);
}

/* ============================================================
   ANIMATIONS (Scroll Reveal)
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 960px) {
  :root {
    --section-py: 72px;
    --container-px: 28px;
  }

  .header__nav { display: none; }
  .header__menu-btn { display: flex; }

  .hero__inner {
    grid-template-columns: 1fr;
    padding: 60px var(--container-px);
    gap: 48px;
  }

  .hero__right {
    order: -1;
  }

  .hero__visual {
    width: 280px;
    height: 280px;
  }

  .hero__visual-shape--1 {
    width: 220px;
    height: 220px;
    top: 30px;
    left: 30px;
  }

  .hero__visual-shape--2 {
    width: 140px;
    height: 140px;
  }

  .hero__visual-shape--3 {
    width: 80px;
    height: 80px;
  }

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

  .about__left .section__heading {
    position: static;
  }

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

  .service__item--wide {
    grid-column: auto;
  }

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

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

  .contact__form-row {
    grid-template-columns: 1fr;
  }

  .footer__inner {
    flex-direction: column;
    gap: 32px;
  }

  .footer__nav ul {
    gap: 20px;
  }
}

@media (max-width: 600px) {
  :root {
    --section-py: 56px;
    --container-px: 20px;
  }

  .hero__heading {
    font-size: 2rem;
  }

  .hero__cta {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .service__item {
    padding: 36px 24px;
  }

  .service-detail__card {
    padding: 36px 24px;
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .page-top {
    bottom: 20px;
    right: 20px;
  }
}