*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: #f2f0eb;
  color: #111;
  -webkit-font-smoothing: antialiased;
}

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

.icon { width: 1em; height: 1em; display: inline-block; fill: currentColor; }
.icon--menu { width: 22px; height: 22px; }
img { max-width: 100%; display: block; }

.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(20px, 4vw, 48px); height: 64px;
  border-bottom: 2px solid #111;
  background: #f2f0eb;
}
.nav__logo { font-family: "Songti SC", "STSong", "SimSun", serif; font-weight: 900; font-size: 1rem; letter-spacing: -0.02em; }
.nav__links { display: flex; gap: 0; list-style: none; }
.nav__links a {
  font-size: 0.72rem; font-weight: 500; letter-spacing: 0.08em;
  padding: 0 20px; height: 64px; display: flex; align-items: center;
  border-left: 2px solid #111;
}
.nav__links a:hover { background: #111; color: #f2f0eb; }
.nav__toggle { display: none; background: none; border: none; cursor: pointer; }

.hero {
  min-height: 100vh; padding-top: 64px;
  display: grid; grid-template-columns: 1fr 1fr;
  border-bottom: 2px solid #111;
}
.hero__left {
  padding: clamp(48px, 8vw, 100px) clamp(24px, 4vw, 48px);
  border-right: 2px solid #111;
  display: flex; flex-direction: column; justify-content: space-between;
}
.hero__issue { font-size: 0.65rem; letter-spacing: 0.2em; font-weight: 500; }
.hero__title {
  font-family: "Songti SC", "STSong", "SimSun", serif;
  font-size: clamp(2.8rem, 7vw, 6rem);
  font-weight: 900; line-height: 1.05; letter-spacing: -0.03em;
  margin-top: auto;
}
.hero__title span { display: block; -webkit-text-stroke: 1.5px #111; color: transparent; }
.hero__right {
  position: relative; overflow: hidden; min-height: 400px;
}
.hero__right img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(100%) contrast(1.1); }
.hero__right-overlay {
  position: absolute; inset: 0; background: rgba(242,240,235,0.15);
  display: flex; align-items: flex-end; padding: 32px;
}
.hero__tag {
  background: #111; color: #f2f0eb; padding: 12px 20px;
  font-size: 0.7rem; letter-spacing: 0.15em; font-weight: 500;
}

.marquee {
  overflow: hidden; border-bottom: 2px solid #111; padding: 16px 0;
  background: #111; color: #f2f0eb;
}
.marquee__track {
  display: flex; gap: 48px; animation: marquee 20s linear infinite;
  white-space: nowrap; font-size: 0.75rem; letter-spacing: 0.2em; font-weight: 500;
}
@keyframes marquee { to { transform: translateX(-50%); } }

.section { border-bottom: 2px solid #111; }
.section__head {
  display: grid; grid-template-columns: 120px 1fr; border-bottom: 2px solid #111;
}
.section__num {
  padding: 32px 24px; border-right: 2px solid #111;
  font-family: "Songti SC", "STSong", "SimSun", serif; font-size: 2.5rem; font-weight: 900; line-height: 1;
}
.section__head-text { padding: 32px clamp(24px, 4vw, 48px); }
.section__title { font-family: "Songti SC", "STSong", "SimSun", serif; font-size: clamp(1.5rem, 3vw, 2.5rem); font-weight: 900; }
.section__sub { margin-top: 8px; font-size: 0.85rem; color: #555; line-height: 1.7; max-width: 480px; }

.section__body { display: grid; grid-template-columns: repeat(3, 1fr); }
.cell {
  border-right: 2px solid #111;
  display: flex; flex-direction: column;
}
.cell:last-child { border-right: none; }
.cell--img { padding: 0; }
.cell__img { aspect-ratio: 4/3; overflow: hidden; border-bottom: 2px solid #111; }
.cell__img img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(30%); transition: filter 0.4s, transform 0.5s; }
.cell:hover .cell__img img { filter: grayscale(0%); transform: scale(1.03); }
.cell__content { padding: 32px clamp(20px, 3vw, 36px) 40px; }
.cell__label { font-size: 0.62rem; letter-spacing: 0.2em; color: #888; margin-bottom: 20px; }
.cell__title { font-family: "Songti SC", "STSong", "SimSun", serif; font-size: 1.2rem; font-weight: 600; margin-bottom: 12px; line-height: 1.3; }
.cell__desc { font-size: 0.82rem; line-height: 1.75; color: #555; }

.about-banner { border-bottom: 2px solid #111; overflow: hidden; max-height: 420px; }
.about-banner img { width: 100%; height: 100%; object-fit: cover; display: block; filter: grayscale(100%) contrast(1.05); }

.cases-magazine { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 2px solid #111; }
.case-mag { border-right: 2px solid #111; display: flex; flex-direction: column; }
.case-mag:last-child { border-right: none; }
.case-mag__img { aspect-ratio: 3/4; overflow: hidden; border-bottom: 2px solid #111; }
.case-mag__img img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(100%); transition: filter 0.4s, transform 0.5s; }
.case-mag:hover .case-mag__img img { filter: grayscale(0%); transform: scale(1.03); }
.case-mag__text { padding: 28px clamp(16px, 2vw, 28px) 36px; flex: 1; }

.contact-banner {
  position: relative; min-height: 360px;
  display: flex; align-items: center; justify-content: center;
  border-bottom: 2px solid #111; overflow: hidden;
}
.contact-banner__img { position: absolute; inset: 0; }
.contact-banner__img img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(100%) contrast(1.1); }
.contact-banner__content {
  position: relative; z-index: 2; text-align: center;
  padding: 64px 32px; background: rgba(242,240,235,0.92);
  border: 2px solid #111; max-width: 520px; margin: 48px 24px;
}
.contact-banner__content .section__title { margin-bottom: 12px; }
.contact-banner__content .section__sub { max-width: none; margin: 0 auto; }

.split { display: grid; grid-template-columns: 1fr 1fr; }
.split__col { padding: clamp(48px, 8vw, 80px) clamp(24px, 4vw, 48px); }
.split__col--dark { background: #111; color: #f2f0eb; }
.split__col--dark .cell__desc { color: rgba(242,240,235,0.6); }
.big-text { font-family: "Songti SC", "STSong", "SimSun", serif; font-size: clamp(1.2rem, 2.5vw, 1.8rem); font-weight: 600; line-height: 1.6; }

.footer {
  padding: 32px clamp(24px, 4vw, 48px);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px;
  font-size: 0.7rem; letter-spacing: 0.1em;
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero__left { border-right: none; border-bottom: 2px solid #111; min-height: 60vh; }
  .hero__right { min-height: 50vh; }
  .section__head { grid-template-columns: 80px 1fr; }
  .section__num { font-size: 1.8rem; padding: 24px 16px; }
  .section__body { grid-template-columns: 1fr; }
  .cell { border-right: none; border-bottom: 2px solid #111; }
  .cases-magazine { grid-template-columns: 1fr; }
  .case-mag { border-right: none; border-bottom: 2px solid #111; }
  .split { grid-template-columns: 1fr; }
  .nav__toggle { display: block; }
  .nav__links { display: none; }
}