:root{
  --bg:#f8f9f5; --ink:#4a5147; --ink-soft:#9aa196; --line:#e7eae1; --accent:#a4b6a2;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background-color:var(--bg);background-image:radial-gradient(560px 380px at 88% 4%, rgba(164,182,162,.16), transparent 70%),radial-gradient(640px 460px at 4% 96%, rgba(180,192,176,.12), transparent 70%),url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/></filter><rect width='180' height='180' filter='url(%23n)' opacity='0.04'/></svg>");background-size:auto,auto,180px 180px;color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  line-height:1.75;font-size:16px}
h1,h2,.logo{font-family:"Songti SC","Noto Serif SC","SimSun",serif;font-weight:500}

/* 导航 */
.nav{position:fixed;inset:0 0 auto 0;z-index:50;display:flex;justify-content:space-between;
  align-items:center;padding:18px 5vw;transition:background .3s,box-shadow .3s}
.nav.scrolled{background:rgba(250,248,244,.92);box-shadow:0 1px 0 var(--line)}
.logo{font-size:20px;color:var(--ink);text-decoration:none;letter-spacing:2px}
.logo span{color:var(--ink-soft);font-size:13px;margin-left:6px}
.nav nav a{color:var(--ink);text-decoration:none;margin-left:28px;font-size:14px;letter-spacing:1px}
.nav nav a:hover{color:var(--accent)}

/* 首屏 */
.hero{position:relative;height:92vh;min-height:520px;display:flex;align-items:center;justify-content:center}
.hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-text{position:relative;text-align:center;padding:0 20px}
.kicker{font-size:12px;letter-spacing:4px;color:#fff;opacity:.9;margin-bottom:18px}
.hero h1{font-size:clamp(30px,5.5vw,56px);line-height:1.35;color:#fff;text-shadow:0 2px 24px rgba(60,58,54,.25)}
.hero .sub{color:#fff;opacity:.92;margin:20px 0 34px;font-size:15px;letter-spacing:1px}
.btn{display:inline-block;background:var(--ink);color:#fff;padding:12px 38px;border-radius:999px;
  text-decoration:none;border:none;font-size:15px;letter-spacing:2px;cursor:pointer;transition:opacity .2s}
.btn:hover{opacity:.82}

/* 板块 */
.section{max-width:1120px;margin:0 auto;padding:96px 5vw 40px}
.title{font-size:30px;margin-bottom:8px}
.title::after{content:"";display:block;width:44px;height:1px;background:var(--accent);margin-top:14px}
.title em{font-style:normal;font-size:14px;color:var(--ink-soft);letter-spacing:2px;margin-left:12px;font-family:inherit}
.desc{color:var(--ink-soft);font-size:14px;margin-bottom:40px}
.desc code{background:var(--line);padding:1px 6px;border-radius:4px;font-size:13px}

/* 作品瀑布流 */
.grid{columns:3;column-gap:22px}
@media(max-width:900px){.grid{columns:2}}
@media(max-width:560px){.grid{columns:1}}
.card{break-inside:avoid;margin-bottom:22px;border-radius:10px;overflow:hidden;cursor:zoom-in;background:#fff;box-shadow:0 1px 2px rgba(90,105,90,.04),0 8px 22px rgba(90,105,90,.05);
  opacity:0;transform:translateY(24px);transition:opacity .7s,transform .7s}
.card.show{opacity:1;transform:none}
.card img{width:100%;display:block;transition:transform .6s}
.card:hover img{transform:scale(1.03)}
.card figcaption{padding:10px 4px 2px;font-size:13px;color:var(--ink-soft)}

/* 关于 */
.about-inner{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:start}
@media(max-width:760px){.about-inner{grid-template-columns:1fr}}
.about-inner img{width:100%;border-radius:10px}
.about p{margin-bottom:16px;color:#57534b}
.facts{list-style:none;margin-top:8px}
.facts li{padding:12px 0;border-top:1px solid var(--line);font-size:14.5px;color:#57534b}

/* 联系 */
.form{max-width:560px;display:grid;gap:16px}
.form input,.form textarea{font:inherit;padding:13px 16px;border:1px solid var(--line);
  border-radius:10px;background:#fff;color:var(--ink);resize:vertical}
.form input:focus,.form textarea:focus{outline:2px solid var(--accent);border-color:transparent}
.form .btn{justify-self:start}

footer{text-align:center;border-top:1px solid var(--line);padding:64px 20px 48px;color:var(--ink-soft);font-size:13.5px}
footer .dim{opacity:.65;margin-top:6px}

/* 灯箱 */
.lightbox{position:fixed;inset:0;z-index:99;background:rgba(28,26,24,.9);
  display:none;align-items:center;justify-content:center;flex-direction:column;padding:5vh 5vw}
.lightbox.open{display:flex}
.lightbox img{max-width:100%;max-height:78vh;border-radius:6px}
.lightbox p{color:#ddd;font-size:13px;margin-top:14px}
.lb-close{position:absolute;top:22px;right:30px;background:none;border:none;color:#fff;
  font-size:36px;cursor:pointer;line-height:1}

.sprig{width:22px;height:22px;color:var(--accent);vertical-align:-3px;margin-right:10px}