:root{
  --bg:#efe9de; --bg2:#e6ddcd; --paper:#f8f5ef; --ink:#3b2412; --ink2:#5c4330; --muted:#7d6a58;
  --brown:#5a3510; --sage:#6f7f5c; --sage-d:#56654a; --mint:#cfe3cf; --line:#d6cab5; --white:#fff;
  --radius:18px; --max:1200px;
  --sans:"Jost","Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif;
}
html[lang="zh-CN"]{--sans:"Jost","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.75;font-weight:400}
img{max-width:100%;height:auto;display:block}
a{color:var(--brown)}
a:hover{color:var(--sage-d)}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .6em;font-weight:500;letter-spacing:.01em;color:var(--brown)}
h1{font-size:clamp(2rem,4.4vw,3.4rem)}
h2{font-size:clamp(1.6rem,3vw,2.4rem)}
h3{font-size:1.25rem}
p{margin:0 0 1em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;z-index:99;background:#fff;padding:8px 12px}
/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(239,233,222,.94);backdrop-filter:saturate(1.2) blur(8px);border-bottom:1px solid var(--line)}
.hdr{display:flex;align-items:center;gap:20px;height:74px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--brown);flex-shrink:0}
.brand img{height:42px;width:auto}
.brand b{display:block;font-weight:600;letter-spacing:.12em;font-size:.95rem;line-height:1.1}
.brand small{display:block;font-size:.72rem;color:var(--muted);letter-spacing:.06em}
.nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.nav>a,.nav .dd>button{font:inherit;font-size:.95rem;color:var(--ink);text-decoration:none;padding:8px 12px;border-radius:999px;background:none;border:0;cursor:pointer}
.nav>a:hover,.nav .dd>button:hover,.nav a[aria-current=page]{background:var(--bg2);color:var(--brown)}
.dd{position:relative}
.dd-menu{display:none;position:absolute;top:100%;left:0;min-width:250px;background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:8px;box-shadow:0 12px 30px rgba(59,36,18,.12)}
.dd:hover .dd-menu,.dd:focus-within .dd-menu{display:block}
.dd-menu a{display:block;padding:8px 12px;border-radius:10px;text-decoration:none;color:var(--ink);font-size:.93rem}
.dd-menu a:hover{background:var(--bg2)}
.lang{display:flex;gap:2px;margin-left:10px;border:1px solid var(--line);border-radius:999px;padding:3px}
.lang a{font-size:.82rem;padding:3px 9px;border-radius:999px;text-decoration:none;color:var(--ink2)}
.lang a.on{background:var(--brown);color:#fff}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:10px;padding:8px 10px;cursor:pointer}
.menu-btn span{display:block;width:22px;height:2px;background:var(--ink);margin:4px 0}
@media (max-width:1020px){
  .menu-btn{display:block}
  .nav{display:none;position:absolute;left:0;right:0;top:74px;background:var(--paper);flex-direction:column;align-items:stretch;padding:12px 20px 20px;border-bottom:1px solid var(--line);max-height:calc(100vh - 74px);overflow:auto}
  .nav.open{display:flex}
  .dd-menu{display:block;position:static;box-shadow:none;border:0;background:none;padding:0 0 0 12px}
  .dd>button{display:none}
  .lang{margin:10px 0 0;align-self:flex-start}
  .hdr .lang-m{display:flex}
}
/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:999px;text-decoration:none;font-weight:500;border:1px solid transparent;transition:.2s;font-size:1rem;cursor:pointer}
.btn-primary{background:var(--brown);color:#fff}.btn-primary:hover{background:var(--ink);color:#fff}
.btn-sage{background:var(--sage);color:#fff}.btn-sage:hover{background:var(--sage-d);color:#fff}
.btn-ghost{border-color:var(--brown);color:var(--brown)}.btn-ghost:hover{background:var(--brown);color:#fff}
.btn-wa{background:#25d366;color:#fff}.btn-wa:hover{background:#1da851;color:#fff}
.btns{display:flex;flex-wrap:wrap;gap:12px}
/* sections */
section{padding:84px 0}
.sec-alt{background:var(--paper)}
.sec-dark{background:var(--brown);color:#f3ebe0}.sec-dark h2,.sec-dark h3{color:#fff}.sec-dark a{color:var(--mint)}
.eyebrow{display:inline-block;font-size:.8rem;letter-spacing:.22em;text-transform:uppercase;color:var(--sage-d);font-weight:600;margin-bottom:12px}
.sec-dark .eyebrow{color:var(--mint)}
.lead{font-size:1.15rem;color:var(--ink2);max-width:52em}
.head{max-width:760px;margin-bottom:44px}
.center{text-align:center;margin-left:auto;margin-right:auto}
/* hero */
.hero{position:relative;min-height:min(84vh,760px);display:flex;align-items:flex-end;color:#fff;padding:0}
.hero picture,.hero>img{position:absolute;inset:0}
.hero img{width:100%;height:100%;object-fit:cover}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(40,22,8,.05) 20%,rgba(40,22,8,.72) 100%)}
.hero .wrap{position:relative;z-index:2;padding-bottom:72px;padding-top:120px;width:100%}
.hero h1{color:#fff;max-width:15em;margin-bottom:.4em}
.hero p{font-size:1.15rem;max-width:40em;color:#f6efe6}
.hero .tag{display:inline-block;background:rgba(207,227,207,.9);color:var(--ink);padding:4px 14px;border-radius:999px;font-size:.85rem;margin-bottom:18px;letter-spacing:.06em}
.page-hero{padding:72px 0 40px;background:var(--bg)}
.page-hero .lead{margin-top:8px}
.crumbs{font-size:.85rem;color:var(--muted);margin-bottom:18px}
.crumbs a{color:var(--muted);text-decoration:none}.crumbs a:hover{text-decoration:underline}
/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px}
.stat b{display:block;font-size:2.6rem;font-weight:500;color:var(--brown);line-height:1}
.stat span{color:var(--muted);font-size:.95rem}
/* grids */
.grid{display:grid;gap:24px}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.split img{border-radius:var(--radius);width:100%;aspect-ratio:4/3;object-fit:cover}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.card h3{margin-bottom:.4em}
.card p:last-child{margin-bottom:0}
.sector{display:block;text-decoration:none;color:inherit;background:var(--paper);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);transition:.25s}
.sector:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(59,36,18,.12);color:inherit}
.sector img{aspect-ratio:4/3;object-fit:cover;width:100%}
.sector div{padding:22px 24px}
.sector .more{color:var(--sage-d);font-weight:500}
/* steps */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;list-style:none;padding:0;margin:0}
.steps li{counter-increment:s;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;position:relative}
.steps li::before{content:counter(s,decimal-leading-zero);display:block;font-size:2rem;color:var(--sage);font-weight:500;margin-bottom:6px}
.steps h3{font-size:1.1rem}
.steps p{font-size:.95rem;color:var(--ink2);margin:0}
.sec-dark .steps li{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.15)}.sec-dark .steps p{color:#e9dccb}.sec-dark .steps li::before{color:var(--mint)}
/* projects */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.filters button{font:inherit;font-size:.92rem;border:1px solid var(--line);background:var(--paper);color:var(--ink);padding:8px 18px;border-radius:999px;cursor:pointer}
.filters button.on,.filters button:hover{background:var(--brown);border-color:var(--brown);color:#fff}
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pcard{display:flex;flex-direction:column;text-decoration:none;color:inherit;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s}
.pcard:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(59,36,18,.12);color:inherit}
.pcard .ph{aspect-ratio:4/3;overflow:hidden;background:var(--bg2)}
.pcard img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.pcard:hover img{transform:scale(1.04)}
.pcard .bd{padding:18px 20px 20px}
.pcard .cat{font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:var(--sage-d);font-weight:600}
.pcard h3{font-size:1.08rem;margin:.3em 0 .3em}
.pcard .meta{font-size:.88rem;color:var(--muted);line-height:1.5}
.pcard[hidden]{display:none}
/* project detail */
.pd-meta{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:26px 0 8px}
.pd-meta div{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.pd-meta dt{font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.pd-meta dd{margin:0;font-weight:500;color:var(--brown)}
.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.gallery a{display:block;border-radius:14px;overflow:hidden;background:var(--bg2)}
.gallery img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .5s}
.gallery a:hover img{transform:scale(1.03)}
.gallery a:first-child,.gallery a:last-child:nth-child(even){grid-column:1/-1}.gallery a:first-child img{aspect-ratio:16/9}
.prose{max-width:760px}
.prose h2{font-size:1.5rem;margin-top:1.4em}
.prose ul,.list{padding-left:1.2em}.prose li,.list li{margin-bottom:.4em}
.check{list-style:none;padding:0}
.check li{position:relative;padding-left:32px;margin-bottom:12px}
.check li::before{content:"";position:absolute;left:0;top:.45em;width:18px;height:18px;border-radius:50%;background:var(--mint);box-shadow:inset 0 0 0 5px var(--sage)}
.pill{display:inline-block;background:var(--mint);color:var(--ink);border-radius:999px;padding:2px 12px;font-size:.8rem;margin:0 6px 6px 0}
/* lightbox */
.lb{position:fixed;inset:0;background:rgba(20,12,4,.92);display:none;align-items:center;justify-content:center;z-index:100;padding:24px}
.lb.open{display:flex}
.lb img{max-height:88vh;max-width:92vw;border-radius:8px}
.lb button{position:absolute;background:rgba(255,255,255,.12);color:#fff;border:0;font-size:1.6rem;width:48px;height:48px;border-radius:50%;cursor:pointer}
.lb .x{top:18px;right:18px}.lb .pv{left:18px;top:50%}.lb .nx{right:18px;top:50%}
/* timeline */
.tl{list-style:none;padding:0;margin:0;border-left:2px solid var(--line);margin-left:8px}
.tl li{position:relative;padding:0 0 34px 34px}
.tl li::before{content:"";position:absolute;left:-9px;top:6px;width:16px;height:16px;border-radius:50%;background:var(--sage);box-shadow:0 0 0 4px var(--bg)}
.tl b{font-size:1.6rem;color:var(--brown);font-weight:500;display:block;line-height:1.2}
.tl h3{font-size:1.1rem;margin:.2em 0 .3em}
.inspire{display:grid;grid-template-columns:repeat(7,1fr);gap:12px}
.inspire div{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:18px 10px;text-align:center}
.inspire b{display:block;font-size:2rem;color:var(--sage-d);font-weight:500;line-height:1}
.inspire span{font-size:.9rem}
/* faq */
.faq details{background:var(--paper);border:1px solid var(--line);border-radius:14px;margin-bottom:12px;padding:0 22px}
.faq summary{cursor:pointer;padding:18px 0;font-weight:500;color:var(--brown);list-style:none;position:relative;padding-right:28px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:0;top:14px;font-size:1.4rem;color:var(--sage)}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 0 18px;color:var(--ink2)}
/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:40px;align-items:start}
.cinfo dl{margin:0}
.cinfo dt{font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-top:18px}
.cinfo dd{margin:2px 0 0;font-size:1.1rem}
.cinfo dd a{text-decoration:none}
.map{border:0;width:100%;height:420px;border-radius:var(--radius);background:var(--bg2)}
.qr{display:flex;gap:18px;align-items:center;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-top:24px;max-width:420px}
.qr img{width:150px;height:150px;border-radius:8px;background:#fff;flex-shrink:0}
.qr b{display:block;color:var(--brown);font-size:1.1rem}
.qr span{font-size:.9rem;color:var(--muted)}
/* cta */
.cta{background:var(--sage);color:#fff;border-radius:28px;padding:56px;display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center}
.cta h2{color:#fff}.cta p{color:#eef3ea;margin:0}
.cta .btns{justify-content:flex-end}
.cta .btn-primary{background:#fff;color:var(--brown)}.cta .btn-primary:hover{background:var(--ink);color:#fff}
.cta .btn-ghost{border-color:#fff;color:#fff}
/* footer */
.site-footer{background:#2f1d0e;color:#d9cbb8;padding:64px 0 28px;font-size:.95rem}
.site-footer a{color:#f1e7da;text-decoration:none}.site-footer a:hover{color:var(--mint)}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.site-footer h4{color:#fff;font-size:.85rem;letter-spacing:.16em;text-transform:uppercase;margin-bottom:14px}
.site-footer ul{list-style:none;padding:0;margin:0}.site-footer li{margin-bottom:6px}
.fbrand{display:flex;gap:12px;align-items:center;margin-bottom:14px}
.fbrand img{height:44px;width:auto}
.fbottom{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:.85rem;color:#a8967f}
.wa-float{position:fixed;right:20px;bottom:20px;z-index:60;width:56px;height:56px;border-radius:50%;background:#25d366;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(0,0,0,.2)}
.wa-float svg{width:30px;height:30px;fill:#fff}
.note{font-size:.85rem;color:var(--muted)}
@media (max-width:1020px){
  .stats,.g4,.steps{grid-template-columns:repeat(2,1fr)}
  .g3,.pgrid{grid-template-columns:repeat(2,1fr)}
  .split,.contact-grid,.cta{grid-template-columns:1fr}
  .cta .btns{justify-content:flex-start}
  .fgrid{grid-template-columns:1fr 1fr}
  .inspire{grid-template-columns:repeat(4,1fr)}
  .pd-meta{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  body{font-size:16px}
  section{padding:60px 0}
  .wrap{padding:0 18px}
  .stats{gap:12px}.stat{padding:18px 16px}.stat b{font-size:2rem}
  .g2,.g3,.pgrid,.steps,.gallery{grid-template-columns:1fr}
  .fgrid{grid-template-columns:1fr}
  .inspire{grid-template-columns:repeat(2,1fr)}
  .cta{padding:34px 24px;border-radius:20px}
  .hero{min-height:78vh}.hero .wrap{padding-bottom:48px}
  .brand small{display:none}
  .qr{flex-direction:column;align-items:flex-start}
}

.split .stats{grid-template-columns:repeat(2,1fr)}