/* ============================================================
   优加柒美学空间 · 品牌官网 设计系统
   ============================================================ */
:root{
  --bg:#f6f3ee;
  --bg-2:#efeadf;
  --ink:#17150f;
  --ink-2:#5c564c;
  --ink-3:#98917f;
  --line:#e2dbcc;
  --accent:#a8834f;
  --accent-2:#8a6a3e;
  --dark:#17150f;
  --serif:"Playfair Display",Georgia,"Times New Roman",STSong,SimSun,serif;
  --sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--ink);
  font-size:15px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer}

.container{width:min(1280px,92vw);margin:0 auto}
.dark-sec{background:var(--dark);color:#ece7dc}

/* ---------- 顶部导航 ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:100;
  transition:background .4s var(--ease),box-shadow .4s;
}
.nav .bar{
  width:min(1360px,94vw);margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  height:78px;
}
.nav.scrolled{background:rgba(246,243,238,.94);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--line);color:var(--ink)}
.nav.on-dark:not(.scrolled){color:#fff}
.brand{display:flex;align-items:baseline;gap:12px}
.brand .zh{font-size:22px;letter-spacing:.28em;font-weight:600}
.brand .en{font-family:var(--serif);font-style:italic;font-size:12px;letter-spacing:.18em;color:var(--accent)}
.nav.on-dark:not(.scrolled) .brand .en{color:#d3b183}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links>li{position:relative}
.nav-links a.top{
  display:block;padding:10px 16px;font-size:14.5px;letter-spacing:.14em;
  position:relative;white-space:nowrap;
}
.nav-links a.top::after{
  content:"";position:absolute;left:16px;right:16px;bottom:4px;height:1px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .35s var(--ease);
}
.nav-links a.top:hover::after,.nav-links li.active a.top::after{transform:scaleX(1)}
/* 下拉 */
.dropdown{
  position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(10px);
  background:#fff;min-width:200px;padding:14px 0;
  box-shadow:0 18px 50px rgba(23,21,15,.14);
  opacity:0;visibility:hidden;transition:.35s var(--ease);
}
.nav-links li:hover .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown a{display:block;padding:9px 26px;font-size:13.5px;color:var(--ink-2);letter-spacing:.1em;transition:.25s}
.dropdown a:hover{color:var(--accent);padding-left:32px}
.nav-cta{
  border:1px solid currentColor;background:transparent;color:inherit;
  padding:9px 22px;font-size:13.5px;letter-spacing:.2em;transition:.35s var(--ease);
}
.nav-cta:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.burger{display:none;background:none;border:0;width:34px;height:24px;position:relative}
.burger span{position:absolute;left:0;right:0;height:1.5px;background:currentColor;transition:.3s}
.burger span:nth-child(1){top:4px}.burger span:nth-child(2){top:11px}.burger span:nth-child(3){top:18px}
@media (max-width:1020px){
  .burger{display:block}
  .nav-links{
    position:fixed;top:78px;left:0;right:0;bottom:0;
    background:var(--bg);flex-direction:column;align-items:stretch;
    padding:30px 6vw;gap:0;overflow:auto;
    transform:translateX(100%);transition:transform .45s var(--ease);
  }
  .nav.open .nav-links{transform:none}
  .nav-links a.top{font-size:17px;padding:16px 0;border-bottom:1px solid var(--line)}
  .dropdown{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;background:transparent;padding:0 0 8px 16px;display:none}
  .nav-links li:hover .dropdown{display:block}
  .nav-cta{margin-top:24px;width:100%}
}

/* ---------- Hero ---------- */
.hero{position:relative;height:100vh;min-height:640px;display:flex;align-items:flex-end;overflow:hidden;color:#fff}
.hero .bg,.hero-slide{
  position:absolute;inset:0;background-size:cover;background-position:center;
}
.hero-slide{opacity:0;transition:opacity 1.6s ease}
.hero-slide.on{opacity:1}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(15,13,10,.72) 0%,rgba(15,13,10,.18) 45%,rgba(15,13,10,.34) 100%);
}
.hero-inner{position:relative;z-index:2;width:min(1280px,92vw);margin:0 auto;padding-bottom:12vh}
.hero-kicker{font-family:var(--serif);font-style:italic;letter-spacing:.3em;font-size:14px;color:#d3b183;margin-bottom:22px}
.hero h1{font-size:clamp(34px,5.4vw,68px);font-weight:600;letter-spacing:.18em;line-height:1.35}
.hero p{margin-top:20px;font-size:clamp(14px,1.3vw,17px);letter-spacing:.24em;color:rgba(255,255,255,.82);font-weight:300}
.hero-scroll{
  position:absolute;bottom:36px;left:50%;transform:translateX(-50%);z-index:2;
  color:rgba(255,255,255,.7);font-size:11px;letter-spacing:.4em;
  display:flex;flex-direction:column;align-items:center;gap:10px;
}
.hero-scroll::after{content:"";width:1px;height:52px;background:linear-gradient(#fff,transparent);animation:drip 2.2s infinite}
@keyframes drip{0%{transform:scaleY(0);transform-origin:top}55%{transform:scaleY(1);transform-origin:top}56%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
.hero-dots{position:absolute;right:4vw;bottom:9vh;z-index:3;display:flex;gap:12px}
.hero-dots button{width:34px;height:2px;border:0;background:rgba(255,255,255,.35);transition:.3s}
.hero-dots button.on{background:#d3b183}

/* ---------- 内页头 ---------- */
.page-head{
  padding:190px 0 90px;position:relative;overflow:hidden;
  background:var(--bg-2);
}
.page-head .en-big{
  position:absolute;right:-1vw;top:60px;
  font-family:var(--serif);font-size:clamp(90px,14vw,190px);font-style:italic;
  color:transparent;-webkit-text-stroke:1px var(--line);line-height:1;user-select:none;
}
.page-head h1{font-size:clamp(30px,3.6vw,46px);letter-spacing:.22em;font-weight:600}
.page-head .crumb{margin-top:16px;font-size:12.5px;letter-spacing:.2em;color:var(--ink-3)}
.page-head .crumb a:hover{color:var(--accent)}

/* ---------- 板块公共 ---------- */
.sec{padding:110px 0}
.sec-tight{padding:70px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin-bottom:56px;flex-wrap:wrap}
.sec-head .no{font-family:var(--serif);font-style:italic;font-size:15px;color:var(--accent);letter-spacing:.3em;display:block;margin-bottom:14px}
.sec-head h2{font-size:clamp(26px,3vw,38px);letter-spacing:.2em;font-weight:600}
.sec-head .sub{margin-top:10px;color:var(--ink-2);font-size:14px;letter-spacing:.12em;font-weight:300}
.link-more{
  font-size:13px;letter-spacing:.26em;color:var(--ink-2);
  display:inline-flex;align-items:center;gap:10px;transition:.3s;padding-bottom:6px;
  border-bottom:1px solid var(--line);
}
.link-more:hover{color:var(--accent);border-color:var(--accent)}
.link-more i{font-family:var(--serif);font-style:normal}

/* ---------- 数据条 ---------- */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats .container{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:46px 20px;text-align:center;border-left:1px solid var(--line)}
.stat:first-child{border-left:0}
.stat b{font-family:var(--serif);font-size:clamp(30px,3vw,44px);font-weight:500;color:var(--accent);display:block;line-height:1.2}
.stat b small{font-size:.45em;letter-spacing:.1em;margin-left:4px}
.stat span{display:block;margin-top:8px;font-size:13px;letter-spacing:.24em;color:var(--ink-2)}
@media (max-width:760px){
  .stats .container{grid-template-columns:1fr 1fr}
  .stat{border-left:0;border-top:1px solid var(--line)}
  .stat:nth-child(even){border-left:1px solid var(--line)}
  .stat:nth-child(-n+2){border-top:0}
}

/* ---------- 产品系列网格 ---------- */
.series-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.series-card{position:relative;overflow:hidden;display:block;aspect-ratio:3/4;color:#fff}
.series-card .pic{position:absolute;inset:0;background-size:cover;background-position:center;transition:transform 1.1s var(--ease)}
.series-card:hover .pic{transform:scale(1.07)}
.series-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(15,13,10,.78) 0%,rgba(15,13,10,.05) 55%);
}
.series-card .info{position:absolute;left:28px;right:28px;bottom:26px;z-index:2}
.series-card .en{font-family:var(--serif);font-style:italic;font-size:12.5px;letter-spacing:.24em;color:#d3b183;display:block;margin-bottom:8px}
.series-card h3{font-size:21px;letter-spacing:.16em;font-weight:500}
.series-card .meta{margin-top:6px;font-size:12.5px;color:rgba(255,255,255,.72);letter-spacing:.08em;font-weight:300}
.series-card .arrow{
  position:absolute;top:22px;right:22px;z-index:2;width:40px;height:40px;
  border:1px solid rgba(255,255,255,.4);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  opacity:0;transform:translateY(8px);transition:.4s var(--ease);
}
.series-card:hover .arrow{opacity:1;transform:none}
@media (max-width:960px){.series-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.series-grid{grid-template-columns:1fr}}

/* ---------- 品牌理念（左文右图） ---------- */
.split{display:grid;grid-template-columns:1fr 1.1fr;gap:70px;align-items:center}
.split .pic-wrap{position:relative}
.split .pic-wrap .pic{aspect-ratio:4/5;background-size:cover;background-position:center}
.split .pic-wrap::before{
  content:"";position:absolute;inset:-22px 22px 22px -22px;
  border:1px solid var(--accent);opacity:.5;
}
.split h2{font-size:clamp(26px,2.8vw,36px);letter-spacing:.2em;font-weight:600;line-height:1.6}
.split .lead{margin:26px 0 14px;color:var(--ink-2);font-weight:300;letter-spacing:.06em}
.split .en-quote{font-family:var(--serif);font-style:italic;color:var(--ink-3);font-size:14px;letter-spacing:.08em}
@media (max-width:900px){.split{grid-template-columns:1fr;gap:46px}}

/* ---------- 空间案例 ---------- */
.space-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.space-card{position:relative;overflow:hidden;aspect-ratio:3/3.4;color:#fff;display:block}
.space-card .pic{position:absolute;inset:0;background-size:cover;background-position:center;transition:transform 1.1s var(--ease)}
.space-card:hover .pic{transform:scale(1.06)}
.space-card::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(15,13,10,.7),rgba(15,13,10,.02) 50%)}
.space-card .info{position:absolute;left:26px;bottom:24px;z-index:2}
.space-card .tag{font-size:11px;letter-spacing:.3em;color:#d3b183;display:block;margin-bottom:8px}
.space-card h3{font-size:19px;letter-spacing:.14em;font-weight:500}
.space-card .desc{font-size:12.5px;color:rgba(255,255,255,.7);margin-top:6px;font-weight:300;letter-spacing:.06em}
@media (max-width:960px){.space-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.space-grid{grid-template-columns:1fr}}

/* ---------- 新闻 ---------- */
.news-list{border-top:1px solid var(--line)}
.news-item{
  display:grid;grid-template-columns:110px 1fr auto;gap:30px;align-items:center;
  padding:30px 6px;border-bottom:1px solid var(--line);transition:.3s;
}
.news-item:hover{background:#fff}
.news-item .date{text-align:center}
.news-item .date b{font-family:var(--serif);font-size:26px;font-weight:500;display:block;line-height:1.1}
.news-item .date span{font-size:12px;color:var(--ink-3);letter-spacing:.1em}
.news-item h3{font-size:17px;font-weight:500;letter-spacing:.06em;transition:.3s}
.news-item:hover h3{color:var(--accent)}
.news-item .cat{font-size:11px;letter-spacing:.2em;color:var(--accent);border:1px solid var(--accent);padding:4px 12px;border-radius:99px;white-space:nowrap}
.news-item p.abs{font-size:13px;color:var(--ink-2);font-weight:300;margin-top:6px;letter-spacing:.04em}
@media (max-width:700px){
  .news-item{grid-template-columns:80px 1fr;gap:18px}
  .news-item .cat{display:none}
}

/* 新闻 tab */
.tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:44px}
.tabs button{
  background:none;border:1px solid var(--line);padding:9px 26px;
  font-size:13.5px;letter-spacing:.18em;color:var(--ink-2);transition:.3s;
}
.tabs button:hover{border-color:var(--accent);color:var(--accent)}
.tabs button.on{background:var(--dark);border-color:var(--dark);color:#fff}

/* ---------- CTA ---------- */
.cta{position:relative;overflow:hidden;padding:120px 0;color:#fff;text-align:center}
.cta .bg{position:absolute;inset:0;background-size:cover;background-position:center}
.cta::after{content:"";position:absolute;inset:0;background:rgba(15,13,10,.66)}
.cta .container{position:relative;z-index:2}
.cta h2{font-size:clamp(26px,3.2vw,40px);letter-spacing:.26em;font-weight:600}
.cta p{margin:18px 0 40px;color:rgba(255,255,255,.8);letter-spacing:.2em;font-weight:300;font-size:15px}
.btn-solid{
  display:inline-block;background:var(--accent);color:#fff;border:1px solid var(--accent);
  padding:15px 52px;font-size:14px;letter-spacing:.3em;transition:.35s var(--ease);
}
.btn-solid:hover{background:transparent;color:#fff}
.btn-ghost{
  display:inline-block;border:1px solid rgba(255,255,255,.5);color:#fff;
  padding:15px 52px;font-size:14px;letter-spacing:.3em;transition:.35s var(--ease);
}
.btn-ghost:hover{background:#fff;color:var(--dark);border-color:#fff}

/* ---------- Footer ---------- */
footer{background:var(--dark);color:#b9b2a4;padding:80px 0 0;font-weight:300}
footer .top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:50px;padding-bottom:60px}
footer h4{color:#ece7dc;font-size:14px;letter-spacing:.24em;font-weight:500;margin-bottom:22px}
footer .fbrand .zh{font-size:24px;letter-spacing:.3em;color:#ece7dc;font-weight:600}
footer .fbrand .en{font-family:var(--serif);font-style:italic;color:#d3b183;font-size:12.5px;letter-spacing:.2em;margin-top:6px}
footer .fbrand p{margin-top:20px;font-size:13px;line-height:2;letter-spacing:.05em}
footer li{font-size:13.5px;margin-bottom:12px;letter-spacing:.08em}
footer li a:hover{color:#d3b183}
footer .contact-line{display:flex;gap:12px;margin-bottom:14px;font-size:13.5px;letter-spacing:.06em}
footer .contact-line b{color:#d3b183;font-weight:500;letter-spacing:.2em}
footer .bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:26px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;letter-spacing:.14em;color:#7d766a;
}
@media (max-width:900px){footer .top{grid-template-columns:1fr 1fr}}
@media (max-width:560px){footer .top{grid-template-columns:1fr}}

/* ---------- 产品详情/网格 ---------- */
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:50px}
.filter-bar button{
  background:none;border:1px solid var(--line);padding:9px 24px;font-size:13px;
  letter-spacing:.14em;color:var(--ink-2);transition:.3s;
}
.filter-bar button.on,.filter-bar button:hover{background:var(--dark);color:#fff;border-color:var(--dark)}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.product-card{background:#fff;border:1px solid var(--line);transition:.4s var(--ease)}
.product-card:hover{box-shadow:0 22px 50px rgba(23,21,15,.1);transform:translateY(-4px)}
.product-card .pic{aspect-ratio:1/1;background-size:cover;background-position:center}
.product-card .info{padding:18px 20px 20px}
.product-card .code{font-family:var(--serif);font-style:italic;font-size:12px;color:var(--accent);letter-spacing:.12em}
.product-card h4{font-size:15px;font-weight:500;letter-spacing:.08em;margin-top:6px}
.product-card .spec{font-size:12px;color:var(--ink-3);margin-top:4px;letter-spacing:.08em}
@media (max-width:960px){.product-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:640px){.product-grid{grid-template-columns:repeat(2,1fr)}}

/* 系列详情头 */
.series-hero{display:grid;grid-template-columns:1.05fr 1fr;min-height:70vh}
.series-hero .pic{background-size:cover;background-position:center}
.series-hero .txt{display:flex;flex-direction:column;justify-content:center;padding:80px 7vw;background:var(--bg-2)}
.series-hero .en{font-family:var(--serif);font-style:italic;color:var(--accent);letter-spacing:.3em;font-size:14px}
.series-hero h1{font-size:clamp(28px,3.4vw,44px);letter-spacing:.2em;margin:18px 0 26px;font-weight:600}
.series-hero p{color:var(--ink-2);font-weight:300;max-width:46ch;letter-spacing:.05em}
.series-hero .specs{margin-top:36px;display:flex;gap:14px;flex-wrap:wrap}
.series-hero .specs span{border:1px solid var(--line);background:#fff;padding:8px 20px;font-size:12.5px;letter-spacing:.12em;color:var(--ink-2)}
@media (max-width:900px){.series-hero{grid-template-columns:1fr}.series-hero .pic{min-height:320px}}

/* ---------- 新闻详情 ---------- */
.article{max-width:820px;margin:0 auto}
.article .a-head{padding-bottom:36px;border-bottom:1px solid var(--line);margin-bottom:44px}
.article h1{font-size:clamp(24px,2.8vw,34px);letter-spacing:.08em;font-weight:600;line-height:1.6}
.article .a-meta{margin-top:20px;display:flex;gap:26px;font-size:13px;color:var(--ink-3);letter-spacing:.1em}
.article .a-meta .cat{color:var(--accent)}
.article .a-body p{margin-bottom:26px;font-weight:300;font-size:15.5px;letter-spacing:.04em;color:#3c382f}
.article .a-body h3{margin:40px 0 18px;font-size:18px;letter-spacing:.14em;font-weight:600}
.article .a-body .figure{margin:36px 0}
.article .a-body .figure .im{aspect-ratio:16/9;background-size:cover;background-position:center}
.article .a-body .figure figcaption{margin-top:12px;font-size:12.5px;color:var(--ink-3);text-align:center;letter-spacing:.14em}
.a-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:70px;border-top:1px solid var(--line);padding-top:30px}
.a-nav a{font-size:13.5px;color:var(--ink-2);letter-spacing:.06em;transition:.3s}
.a-nav a:hover{color:var(--accent)}
.a-nav a.prev::before{content:"← 上一篇 ";color:var(--ink-3);letter-spacing:.2em}
.a-nav a.next{text-align:right}
.a-nav a.next::before{content:"下一篇 → ";color:var(--ink-3);letter-spacing:.2em}
@media (max-width:600px){.a-nav{grid-template-columns:1fr}}

/* ---------- 品牌墙 ---------- */
.brand-wall{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.brand-cell{background:var(--bg);padding:44px 18px;text-align:center;transition:.35s var(--ease)}
.brand-cell:hover{background:#fff;transform:translateY(-3px)}
.brand-cell .mark{font-family:var(--serif);font-size:30px;color:var(--accent);letter-spacing:.06em;line-height:1}
.brand-cell h4{margin-top:18px;font-size:15px;letter-spacing:.2em;font-weight:500}
.brand-cell span{display:block;margin-top:6px;font-size:11.5px;color:var(--ink-3);letter-spacing:.12em}
@media (max-width:960px){.brand-wall{grid-template-columns:repeat(3,1fr)}}
@media (max-width:560px){.brand-wall{grid-template-columns:repeat(2,1fr)}}

/* ---------- 找砖工具 ---------- */
.finder{max-width:760px;margin:0 auto;text-align:center}
.upload-box{
  border:1.5px dashed var(--accent);background:#fff;
  padding:70px 30px;transition:.3s;cursor:pointer;
}
.upload-box:hover{background:var(--bg-2)}
.upload-box .ic{font-size:44px;line-height:1}
.upload-box h3{margin-top:18px;font-size:18px;letter-spacing:.2em;font-weight:500}
.upload-box p{margin-top:10px;font-size:13px;color:var(--ink-3);letter-spacing:.1em}
.finder .note{margin-top:26px;font-size:13px;color:var(--ink-2);letter-spacing:.08em;font-weight:300}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:70px;text-align:left}
.step{border-top:2px solid var(--accent);padding-top:20px}
.step b{font-family:var(--serif);font-style:italic;font-size:14px;color:var(--accent);letter-spacing:.2em}
.step h4{margin-top:10px;font-size:16px;letter-spacing:.14em;font-weight:500}
.step p{margin-top:8px;font-size:13px;color:var(--ink-2);font-weight:300}
@media (max-width:640px){.steps{grid-template-columns:1fr}}

/* ---------- 关于页 ---------- */
.about-story{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:start}
.about-story .pic{aspect-ratio:3/4;background-size:cover;background-position:center}
@media (max-width:860px){.about-story{grid-template-columns:1fr}}
.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.value{background:#fff;border:1px solid var(--line);padding:40px 28px;transition:.35s}
.value:hover{transform:translateY(-4px);box-shadow:0 20px 44px rgba(23,21,15,.08)}
.value .no{font-family:var(--serif);font-style:italic;color:var(--accent);font-size:14px;letter-spacing:.2em}
.value h4{margin-top:14px;font-size:17px;letter-spacing:.16em;font-weight:500}
.value p{margin-top:12px;font-size:13px;color:var(--ink-2);font-weight:300}
@media (max-width:960px){.value-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.value-grid{grid-template-columns:1fr}}

/* ---------- 联系页 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:60px}
.contact-info .row{display:flex;gap:20px;padding:26px 0;border-bottom:1px solid var(--line)}
.contact-info .row b{font-size:13px;letter-spacing:.26em;color:var(--accent);font-weight:500;min-width:86px}
.contact-info .row div{font-size:15px;letter-spacing:.05em;color:var(--ink)}
.contact-info .row small{display:block;color:var(--ink-3);font-size:12.5px;margin-top:4px;letter-spacing:.08em}
.map-ph{aspect-ratio:16/10;background:var(--bg-2);border:1px solid var(--line);position:relative;display:flex;align-items:center;justify-content:center}
.map-ph span{font-size:12.5px;letter-spacing:.3em;color:var(--ink-3)}
.form{background:#fff;border:1px solid var(--line);padding:44px}
.form h3{font-size:18px;letter-spacing:.2em;font-weight:600;margin-bottom:30px}
.form .frow{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form label{display:block;font-size:12.5px;letter-spacing:.18em;color:var(--ink-2);margin:18px 0 8px}
.form input,.form textarea,.form select{
  width:100%;border:1px solid var(--line);background:var(--bg);padding:13px 16px;
  font-family:inherit;font-size:14px;color:var(--ink);letter-spacing:.05em;outline:none;transition:.3s;
}
.form input:focus,.form textarea:focus{border-color:var(--accent);background:#fff}
.form .btn-solid{width:100%;margin-top:28px;border:0}
@media (max-width:860px){.contact-grid{grid-template-columns:1fr}.form .frow{grid-template-columns:1fr}}

/* ---------- 动画 ---------- */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.1s}.d2{transition-delay:.2s}.d3{transition-delay:.3s}.d4{transition-delay:.4s}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:26px;bottom:26px;z-index:90;width:46px;height:46px;
  background:var(--dark);color:#fff;border:0;font-size:16px;
  opacity:0;visibility:hidden;transition:.4s;letter-spacing:0;
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:var(--accent)}