* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Helvetica Neue", sans-serif;
  color: #333;
  overflow-x: hidden;
}

/* HEADER */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 60px;
  background: transparent;
  transition: background 0.4s;
}
.logo {
  font-weight: bold;
  font-size: 18px;
}

.logo a {
  color: white;               /* ✅ 继承原来白色 */
  text-decoration: none;      /* ✅ 去掉下划线 */
  font-weight: bold;
  font-size: 18px;
}

.logo a:hover {
  color: #f04e23;             /* ✅ 悬停时变橙色，可选 */
}

.nav a {
  color: white;
  margin: 0 20px;
  text-decoration: none;
  font-weight: 500;
}
.nav a:hover {
  color: #f04e23;
}
/* HERO SPLIT */
.hero {
  display: flex;
  height: 100vh;
}
.hero-left {
  flex: 1;
  background: #f04e23;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  background-image: url("../images/Prompt/left-img.png");
  background-size: 150%;
  background-position: center;
  /* background-blend-mode: multiply; */
  opacity: 1;
}
.hero-left::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(255,255,255,0.15) 0%, transparent 70%);
}

.hero-text h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 10px;

}
.hero-text p { font-size: 1.3rem; opacity: 0.85;}

/* RIGHT SLIDER */
.hero-right {
  flex: 0 0 35%;
  position: relative;
  overflow: hidden;

  /* display: flex;
     align-items: center;
     justify-content: center; */
}
.slider {
  width: 100%;
  height: 100%;
  position: relative;
}
.slide {
  position: absolute;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
}
.slide.active { opacity: 1; }
.arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.4);
  color: white;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  z-index: 10;
  padding: 5px 10px;
  border-radius: 50%;
}
.arrow.prev { left: 15px; }
.arrow.next { right: 15px; }

.dots {
  position: absolute;
  bottom: 15px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
}
.dot {
  width: 10px;
  height: 10px;
  border: 2px solid white;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0.7;
}
.dot.active { background: white; opacity: 1; }

/* NEWS */
.news {
  background: #111;
  color: white;
  padding: 15px 60px;
  display: flex;
  align-items: center;
  gap: 15px;
  font-size: 14px;
}
.news-label { color: #f04e23; font-weight: bold; }

/* ABOUT */
.about {
  padding: 100px 60px;
  text-align: center;
}
.about h2 { font-size: 28px; margin-bottom: 20px; }
.about p { line-height: 1.8; max-width: 800px; margin: 0 auto; }

/* BUSINESS */
.business {
  background: #f7f7f7;
  padding: 50px 60px;
  text-align: center;
}
.business h2 {
  margin-bottom: 30px;
}
.business-grid {
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;

}
.card {
  width: 280px;
  border-radius: 10px;
  background: white;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: transform 0.3s;
}
.card:hover { transform: translateY(-5px); }
.img-placeholder { height: 180px; background: #ccc; }
.orange .img-placeholder { background: #f04e23; }
.gray .img-placeholder { background: #999; }
.darkgray .img-placeholder { background: #555; }
.card h3 { padding: 20px; }

/* FLOW */
.flow {
  padding: 100px 60px;
  text-align: center;
}
.flow-steps {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}
.step {
  background: #f7f7f7;
  border-radius: 10px;
  width: 220px;
  padding: 20px;
}
.step h4 { color: #f04e23; }

/* FOOTER */
.footer {
  background: #222;
  color: #ccc;
  text-align: center;
  padding: 60px 20px;
}
.footer h3 { color: white; margin-bottom: 10px; }
.contact-btn {
  display: inline-block;
  margin-top: 20px;
  background: #f04e23;
  color: white;
  padding: 10px 20px;
  border-radius: 5px;
  text-decoration: none;
}
.copy { margin-top: 20px; font-size: 13px; }

/* HAMBURGER */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 25px;
  height: 18px;
  cursor: pointer;
  z-index: 2000;
}
.hamburger span {
  display: block;
  height: 3px;
  background: white;
  border-radius: 2px;
  transition: all 0.4s;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* OVERLAY MENU */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(240,78,35,0.95);
  display: flex;
  justify-content: center;
  align-items: center;
  transform: translateY(-100%);
  transition: transform 0.5s;
  z-index: 2000; /* ✅ 必加，确保在最上层 */
}

.overlay.show {
  transform: translateY(0);
}

.overlay-menu {
  display: flex;
  flex-direction: column;
  text-align: center;
  gap: 15px;
}

.overlay-menu a {
  display: block;              /* ✅ 扩大点击范围 */
  padding: 12px 24px;          /* ✅ 让链接更易点 */
  color: white;
  text-decoration: none;
  font-weight: bold;
  font-size: 20px;
  transition: opacity 0.2s;
}

.overlay-menu a:hover {
  opacity: 0.8;
}


/* ANIMATIONS */
.reveal { opacity: 0; transform: translateY(30px); transition: all 0.8s ease; }
.reveal.active { opacity: 1; transform: translateY(0); }

/* RESPONSIVE */
@media (max-width: 70vh) {
  .nav.desktop-nav { display: none; }
  .hamburger { display: flex; }
  .hero { flex-direction: column; }
  .hero-left, .hero-right { height: 50vh; }
}


.slider {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
  }

  .slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1s ease-in-out;
  }

  .slide.active {
    opacity: 1;
  }

  .slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
/* NEWS SLIDER FIX */
.news-slider {
  position: relative;
  display: inline-block;
  overflow: hidden;
  min-height: 2.5em;   /* 必须 >= 2行文字高度 */
}

.news-item {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transition: opacity 1s ease-in-out;
}

.news-item.active {
  opacity: 1;
}

.news-text, .news-date {
  color: #fff;         /* 没这个文字可能是黑的 */
}
/* ===== 修复 NEWS 看不见的问题 ===== */
.news {
  display: flex;
  align-items: center;
  background: #111;
  color: #fff;
  padding: 15px 60px;
  gap: 15px;
  font-size: 14px;
}

.news-slider {
  position: relative;
  flex: 1;
  height: 1.5em; /* 一行高度固定 */
  overflow: hidden;
}

.news-item {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  left: 0;
  right: 0;
  display: flex;
  gap: 10px;
  align-items: center;
  opacity: 0;
  transition: opacity 3s ease-in-out;
}

.news-item.active {
  opacity: 1;
}


/* 展示会事業 */
.card.orange .img-placeholder {
  background-image: url("../images/folio/gallery/a4.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* 広告・プロモーション事業 */
.card.gray .img-placeholder {
  background-image: url("../images/folio/gallery/a3.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* 不動産賃貸・管理事業 */
.card.darkgray:nth-of-type(3) .img-placeholder {
  background-image: url("../images/folio/gallery/a2.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* ホテル運営・用品事業 */
.card.darkgray:nth-of-type(4) .img-placeholder {
  background-image: url("../images/folio/gallery/a1.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}