:root{
  --bg:#faf8f5;
  --bg-soft:#f1ece4;
  --ink:#2b2723;
  --ink-soft:#6b635a;
  --line:#e3dcd1;
  --accent:#a8744f;       /* 暖棕主色，可替换 */
  --accent-dark:#8a5d3c;
  --white:#ffffff;
  --radius:14px;
  --shadow:0 18px 50px rgba(60,45,30,.12);
  --maxw:1180px;
  --serif:"Noto Serif SC","Playfair Display",Georgia,serif;
  --sans:"Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--ink);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}

/* ===== 通用 ===== */
.section__eyebrow{
  font-size:.78rem;letter-spacing:.32em;color:var(--accent);
  font-weight:500;margin-bottom:.6rem;text-transform:uppercase;
}
.section__title{
  font-family:var(--serif);font-size:clamp(1.8rem,3.6vw,2.7rem);
  font-weight:700;line-height:1.25;margin-bottom:1rem;
}
.btn{
  display:inline-block;padding:.85rem 1.9rem;border-radius:999px;
  font-size:.95rem;font-weight:500;cursor:pointer;border:1px solid transparent;
  transition:.25s ease;
}
.btn--light{background:var(--white);color:var(--ink)}
.btn--light:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.btn--ghost{border-color:rgba(255,255,255,.7);color:#fff}
.btn--ghost:hover{background:rgba(255,255,255,.14)}
.btn--dark{background:var(--ink);color:#fff}
.btn--dark:hover{background:var(--accent);transform:translateY(-2px)}

/* ===== 导航 ===== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  transition:.3s ease;
}
.nav.is-scrolled{
  background:rgba(250,248,245,.92);backdrop-filter:blur(10px);
  box-shadow:0 1px 0 var(--line);
}
.nav__inner{
  max-width:var(--maxw);margin:0 auto;padding:1.1rem 1.5rem;
  display:flex;align-items:center;justify-content:space-between;
}
.nav__logo{
  font-family:var(--serif);font-size:1.75rem;font-weight:700;color:#fff;
}
.nav__logo span{color:var(--accent);font-size:1.15rem;font-weight:500;margin-left:.25rem}
/* 滚动后导航变浅底，logo 改为深色以保证可读 */
.nav.is-scrolled .nav__logo{color:var(--ink)}
.nav.is-scrolled .nav__logo span{color:var(--accent)}
.nav__menu{display:flex;gap:2rem}
.nav__menu a{
  font-size:.95rem;color:var(--ink);position:relative;padding:.2rem 0;
}
.nav__menu a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;
  background:var(--accent);transition:.3s;
}
.nav__menu a:hover::after{width:100%}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav__toggle span{width:24px;height:2px;background:var(--ink);transition:.3s}

/* ===== Hero ===== */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;
  text-align:center;color:#fff;overflow:hidden;
}
.hero__bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.05)}
.hero__overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,15,10,.45),rgba(20,15,10,.6))}
.hero__content{position:relative;z-index:2;padding:0 1.5rem;max-width:860px}
.hero__eyebrow{letter-spacing:.4em;font-size:.8rem;opacity:.9;margin-bottom:1.2rem}
.hero__title{
  font-family:var(--serif);font-weight:700;
  font-size:clamp(2.4rem,6vw,4.4rem);line-height:1.2;margin-bottom:1.2rem;
}
.hero__sub{font-size:clamp(1rem,2vw,1.2rem);opacity:.92;margin-bottom:2.2rem;letter-spacing:.05em}
.hero__cta{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}
.hero__scroll{
  position:absolute;bottom:2rem;left:50%;transform:translateX(-50%);
  font-size:2rem;color:#fff;opacity:.8;z-index:2;animation:bob 2s infinite;
}
@keyframes bob{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,8px)}}

/* ===== 关于 ===== */
.about{
  max-width:var(--maxw);margin:0 auto;padding:6rem 1.5rem;
  display:grid;grid-template-columns:0.9fr 1.1fr;gap:4rem;align-items:center;
}
.about__img img{border-radius:var(--radius);box-shadow:var(--shadow);aspect-ratio:4/5;object-fit:cover;width:100%}
.about__lead{font-family:var(--serif);font-size:1.25rem;line-height:1.7;margin-bottom:1rem}
.about__desc{color:var(--ink-soft);margin-bottom:1.6rem}
.about__list{list-style:none;display:flex;gap:2.2rem;flex-wrap:wrap;margin-bottom:2rem}
.about__list li{font-size:.95rem;color:var(--ink-soft)}
.about__list strong{display:block;font-family:var(--serif);font-size:1.8rem;color:var(--accent)}

/* ===== 作品 ===== */
.works{max-width:var(--maxw);margin:0 auto;padding:5rem 1.5rem}
.works__head{text-align:center;margin-bottom:2.2rem}
.works__hint{color:var(--ink-soft);font-size:.95rem}
.filter{display:flex;gap:.7rem;justify-content:center;flex-wrap:wrap;margin-bottom:2.5rem}
.filter__btn{
  border:1px solid var(--line);background:transparent;color:var(--ink-soft);
  padding:.55rem 1.4rem;border-radius:999px;cursor:pointer;font-size:.92rem;
  font-family:var(--sans);transition:.25s;
}
.filter__btn:hover{border-color:var(--accent);color:var(--accent)}
.filter__btn.is-active{background:var(--accent);border-color:var(--accent);color:#fff}

.gallery{
  columns:3;column-gap:1.1rem;
}
.gallery__item{
  position:relative;break-inside:avoid;margin-bottom:1.1rem;border-radius:var(--radius);
  overflow:hidden;cursor:pointer;background:var(--bg-soft);
}
.gallery__item img{width:100%;transition:transform .5s ease}
.gallery__item:hover img{transform:scale(1.06)}
.gallery__item figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:1.4rem 1rem .9rem;
  color:#fff;font-size:.92rem;background:linear-gradient(0deg,rgba(0,0,0,.6),transparent);
  opacity:0;transform:translateY(8px);transition:.3s;
}
.gallery__item:hover figcaption{opacity:1;transform:translateY(0)}
.gallery__item.is-hidden{display:none}

/* ===== 服务 ===== */
.services{background:var(--bg-soft);padding:5.5rem 1.5rem}
.services__head{text-align:center;max-width:var(--maxw);margin:0 auto 3rem}
.cards{
  max-width:var(--maxw);margin:0 auto;display:grid;
  grid-template-columns:repeat(4,1fr);gap:1.4rem;
}
.card{
  background:var(--white);border-radius:var(--radius);padding:2.2rem 1.6rem;
  text-align:center;box-shadow:0 8px 30px rgba(60,45,30,.06);transition:.3s;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.card__icon{font-size:2.2rem;margin-bottom:1rem}
.card h3{font-family:var(--serif);font-size:1.3rem;margin-bottom:.7rem}
.card p{color:var(--ink-soft);font-size:.92rem;margin-bottom:.4rem}
.card__price{color:var(--accent);font-weight:600;margin-top:.8rem;font-size:1.05rem}

/* ===== 联系 ===== */
.contact{max-width:var(--maxw);margin:0 auto;padding:6rem 1.5rem}
.contact__inner{display:grid;grid-template-columns:1fr 1fr;gap:3.5rem;align-items:start}
.contact__desc{color:var(--ink-soft);margin-bottom:1.8rem}
.contact__list{list-style:none;display:flex;flex-direction:column;gap:1rem}
.contact__list li{font-size:1rem}
.contact__list span{display:inline-block;width:5.5rem;color:var(--accent);font-weight:500}
.contact__form{display:flex;flex-direction:column;gap:1rem;background:var(--white);
  padding:2rem;border-radius:var(--radius);box-shadow:var(--shadow)}
.contact__form input,.contact__form select,.contact__form textarea{
  font-family:var(--sans);font-size:.95rem;padding:.9rem 1rem;border:1px solid var(--line);
  border-radius:10px;background:var(--bg);color:var(--ink);resize:vertical;
}
.contact__form input:focus,.contact__form select:focus,.contact__form textarea:focus{
  outline:none;border-color:var(--accent);
}
.contact__note{font-size:.8rem;color:var(--ink-soft)}

/* ===== 页脚 ===== */
.footer{background:var(--ink);color:#fff;text-align:center;padding:2.5rem 1.5rem}
.footer__small{opacity:.6;font-size:.85rem;margin-top:.4rem}

/* ===== 灯箱 ===== */
.lightbox{
  position:fixed;inset:0;background:rgba(20,15,10,.92);z-index:100;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transition:.3s;padding:2rem;
}
.lightbox.is-open{opacity:1;pointer-events:auto}
.lightbox img{max-width:90vw;max-height:80vh;border-radius:10px;box-shadow:var(--shadow)}
.lightbox__cap{color:#fff;margin-top:1rem;font-size:1rem}
.lightbox__close{
  position:absolute;top:1.5rem;right:2rem;background:none;border:0;color:#fff;
  font-size:2.4rem;cursor:pointer;line-height:1;
}

/* ===== 滚动动画 ===== */
.reveal{opacity:0;transform:translateY(30px);transition:.8s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media (max-width:900px){
  .about{grid-template-columns:1fr;gap:2.5rem}
  .cards{grid-template-columns:repeat(2,1fr)}
  .contact__inner{grid-template-columns:1fr;gap:2rem}
  .gallery{columns:2}
}
@media (max-width:640px){
  .nav__menu{
    position:fixed;top:64px;right:0;flex-direction:column;gap:0;
    background:var(--bg);width:min(70vw,260px);height:calc(100vh - 64px);
    padding:1.5rem;transform:translateX(110%);transition:.35s;box-shadow:-10px 0 30px rgba(0,0,0,.08);
  }
  .nav__menu.is-open{transform:translateX(0)}
  .nav__menu a{padding:.9rem 0;border-bottom:1px solid var(--line)}
  .nav__toggle{display:flex}
  .cards{grid-template-columns:1fr}
  .gallery{columns:1}
  .about__list{gap:1.4rem}
}