/* =========================================================================
   木科 MUKE · 设计系统 v2
   "标本馆档案" — 藏蓝 / 黄铜 / 象牙纸 · 细腻发丝线 · 编辑式排版
   ========================================================================= */

:root{
  --paper:#F7F3EC;
  --paper-2:#EFE7D9;
  --white:#FFFFFF;
  --ink:#16201E;
  --ink-2:#39433F;
  --ink-3:#5C6560;
  --muted:#8B8F86;
  --line:#DED5C6;
  --line-strong:#C6BBA7;
  --navy:#0B2230;
  --navy-2:#0E2938;
  --navy-3:#123344;
  --brass:#B0834A;
  --brass-2:#946A36;
  --wood:#8A5B33;
  --cites:#A8442A;

  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --serif:Georgia,"Times New Roman","Songti SC","Noto Serif SC",serif;

  --max:1560px;
  --pad:clamp(20px,4.6vw,76px);
  --section:clamp(52px,5.4vw,92px);
  --ease:cubic-bezier(.22,1,.36,1);
}

*,:before,:after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
[hidden]{display:none!important}
::selection{background:var(--brass);color:#fff}
:focus-visible{outline:1px solid var(--brass);outline-offset:3px}

/* ---------- typography ---------- */
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.16;letter-spacing:-.01em}
h1{font-size:clamp(2.5rem,5.1vw,4.7rem);line-height:1.06;letter-spacing:-.025em}
h2{font-size:clamp(1.75rem,3.2vw,2.85rem);line-height:1.18;letter-spacing:-.02em}
h3{font-size:clamp(1.08rem,1.55vw,1.4rem);letter-spacing:-.008em}
h4{font-size:.95rem}
p{margin:0}
strong,b{font-weight:600;color:var(--ink)}

.eyebrow{
  display:inline-block;
  font-size:.7rem;
  font-weight:600;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--brass);
  line-height:1.6;
}
.eyebrow::before{
  content:"";
  display:inline-block;
  width:26px;
  height:1px;
  background:currentColor;
  vertical-align:middle;
  margin-right:12px;
  opacity:.65;
}
.lede{color:var(--ink-3);font-size:clamp(1rem,1.25vw,1.14rem);line-height:1.9;max-width:60ch}
.latin{font-family:var(--serif);font-style:italic;letter-spacing:.005em}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.on-dark{color:#fff}
.on-dark .lede{color:rgba(255,255,255,.72)}

/* ---------- layout ---------- */
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.narrow{max-width:760px;margin-left:auto;margin-right:auto}
.section{padding:var(--section) 0}
.section--soft{background:var(--paper-2)}
.rule{border:0;height:1px;background:var(--line);margin:0}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:12px;
  padding:15px 30px;
  border:1px solid var(--brass);
  background:var(--brass);
  color:#fff;
  font-size:.86rem;
  font-weight:600;
  letter-spacing:.12em;
  border-radius:0;
  cursor:pointer;
  transition:background .35s var(--ease),border-color .35s var(--ease),color .35s var(--ease);
}
.btn:hover{background:var(--brass-2);border-color:var(--brass-2)}
.btn:active{transform:translateY(1px)}
.btn .arrow{transition:transform .35s var(--ease);font-size:.9em}
.btn:hover .arrow{transform:translateX(5px)}
.btn--ghost{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.btn--ghost:hover{background:rgba(255,255,255,.08);border-color:#fff}
.btn--dark{background:var(--navy);border-color:var(--navy)}
.btn--dark:hover{background:var(--navy-3);border-color:var(--navy-3)}
.btn--outline-dark{background:transparent;border-color:var(--navy);color:var(--navy)}
.btn--outline-dark:hover{background:var(--navy);color:#fff;border-color:var(--navy)}
.btn--orange{background:var(--brass);border-color:var(--brass)}
.btn--orange:hover{background:var(--brass-2);border-color:var(--brass-2)}
.btn--small{padding:11px 22px;font-size:.78rem;letter-spacing:.1em}

.tag{
  display:inline-block;
  padding:5px 11px;
  background:var(--navy);
  color:#fff;
  font-size:.68rem;
  font-weight:600;
  letter-spacing:.14em;
  line-height:1.6;
}
.tag--green,.tag--navy{background:var(--navy);color:#fff}

.link-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.8rem;
  font-weight:600;
  letter-spacing:.1em;
  color:var(--brass);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
  transition:border-color .3s var(--ease),color .3s var(--ease);
}
.link-more:hover{border-bottom-color:var(--brass)}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--navy);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.site-header.is-transparent{
  position:fixed;left:0;right:0;
  background:transparent;
  border-bottom-color:transparent;
  transition:background .5s var(--ease),border-color .5s var(--ease);
}
.site-header.is-transparent.scrolled{
  background:rgba(11,34,48,.94);
  border-bottom-color:rgba(255,255,255,.1);
  backdrop-filter:saturate(140%) blur(10px);
  -webkit-backdrop-filter:saturate(140%) blur(10px);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;height:78px}
.brand{display:inline-flex;align-items:baseline;gap:10px;white-space:nowrap}
.brand-mark{font-size:.95rem;font-weight:700;letter-spacing:.3em;color:#fff}
.brand-cn{font-size:.92rem;letter-spacing:.16em;color:rgba(255,255,255,.55)}
.nav{display:flex;gap:clamp(14px,2vw,30px);font-size:.845rem;font-weight:500;color:rgba(255,255,255,.72);white-space:nowrap}
.nav a{position:relative;padding:8px 0;transition:color .3s var(--ease)}
.nav a::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;
  background:var(--brass);transform:scaleX(0);transform-origin:left;
  transition:transform .4s var(--ease);
}
.nav a:hover{color:#fff}
.nav a:hover::after{transform:scaleX(1)}
.header-cta{display:flex;align-items:center;gap:20px}
.tel{font-size:.82rem;letter-spacing:.06em;color:rgba(255,255,255,.7)}
.menu-btn{
  display:none;width:44px;height:44px;padding:0;cursor:pointer;
  background:transparent;border:1px solid rgba(255,255,255,.28);
  flex-direction:column;align-items:center;justify-content:center;gap:6px;
}
.menu-btn .bar{display:block;width:16px;height:1px;background:#fff;transition:transform .3s var(--ease)}
.menu-btn.is-open .bar:first-child{transform:translateY(3.5px) rotate(45deg)}
.menu-btn.is-open .bar:nth-child(2){transform:translateY(-3.5px) rotate(-45deg)}
.mobile-nav{display:none}
@media (max-width:1080px){
  .nav,.tel{display:none}
  .menu-btn{display:flex}
  .header-cta{gap:12px}
  .mobile-nav{
    display:none;position:absolute;top:100%;left:0;right:0;
    background:var(--navy);border-top:1px solid rgba(255,255,255,.1);
    box-shadow:0 24px 48px rgba(0,0,0,.35);
    max-height:calc(100vh - 78px);overflow-y:auto;
  }
  .mobile-nav.is-open{display:block}
  .mobile-nav>a{
    display:flex;align-items:center;justify-content:space-between;
    padding:16px var(--pad);font-size:.95rem;color:rgba(255,255,255,.85);
    border-bottom:1px solid rgba(255,255,255,.07);
  }
  .mobile-nav>a:hover{background:rgba(255,255,255,.04)}
  .mobile-contact{display:flex;flex-direction:column;gap:6px;padding:18px var(--pad) 24px;font-size:.85rem;color:rgba(255,255,255,.55)}
}

/* ---------- footer ---------- */
.site-footer{background:var(--navy);color:#fff;padding-top:clamp(56px,6vw,84px);border-top:1px solid rgba(180,131,74,.35)}
.footer-top{
  display:grid;grid-template-columns:1.7fr .8fr .8fr 1.1fr;
  gap:clamp(28px,4vw,56px);padding-bottom:clamp(40px,5vw,64px);
}
.footer-brand .brand-mark{font-size:1.15rem;letter-spacing:.34em}
.footer-desc{color:rgba(255,255,255,.55);margin-top:20px;font-size:.855rem;line-height:1.95;max-width:34ch}
.footer-col{display:flex;flex-direction:column;gap:11px;font-size:.855rem;color:rgba(255,255,255,.62)}
.footer-col h4{
  margin-bottom:10px;font-size:.68rem;font-weight:600;letter-spacing:.24em;
  text-transform:uppercase;color:var(--brass);
}
.footer-col a{transition:color .25s var(--ease)}
.footer-col a:hover{color:#fff}
.footer-addr{line-height:1.85}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.1);
  padding:24px var(--pad) 30px;font-size:.75rem;letter-spacing:.02em;color:rgba(255,255,255,.42);
}
.footer-bottom .dot{margin:0 10px;opacity:.5}
.footer-meta{display:flex;align-items:center;flex-wrap:wrap}
@media (max-width:900px){
  .footer-top{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:560px){
  .footer-top{grid-template-columns:1fr}
}

/* =========================================================================
   页面头部 / 通用区块标题
   ========================================================================= */
.page-head{
  position:relative;
  background:var(--navy);
  color:#fff;
  padding:clamp(64px,7.5vw,116px) 0 clamp(48px,5.5vw,84px);
  overflow:hidden;
}
.page-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(90% 130% at 88% -20%,rgba(176,131,74,.16),transparent 58%),
    radial-gradient(70% 100% at 0% 0%,rgba(255,255,255,.05),transparent 60%);
}
.page-head>.container{position:relative;z-index:1}
.page-head h1{color:#fff;margin-top:20px;font-size:clamp(2.3rem,4.6vw,3.9rem)}
.page-head .lede{color:rgba(255,255,255,.7);max-width:46em;margin-top:22px}
.page-head .eyebrow{color:var(--brass)}

.head-stats,.key-facts{display:flex;flex-wrap:wrap;gap:clamp(32px,5vw,72px);margin:clamp(34px,4vw,48px) 0 0;padding-top:clamp(24px,3vw,32px);border-top:1px solid rgba(255,255,255,.14)}
.head-stats div,.key-facts div{display:flex;flex-direction:column-reverse;gap:4px}
.head-stats dt,.key-facts dt{
  font-size:.68rem;font-weight:500;letter-spacing:.2em;text-transform:uppercase;
  color:rgba(255,255,255,.5);
}
.head-stats dd,.key-facts dd{
  margin:0;font-size:clamp(1.35rem,2.2vw,1.7rem);font-weight:600;
  letter-spacing:-.02em;color:#fff;line-height:1.2;
}

.sec-head{margin-bottom:clamp(34px,4vw,56px)}
.sec-head h2{margin-top:16px;max-width:22ch}
.sec-head .lede{margin-top:16px;font-size:.95rem}
.sec-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:28px}

/* =========================================================================
   首页
   ========================================================================= */
.hero{position:relative;background:var(--navy);color:#fff;overflow:hidden}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);
  align-items:stretch;min-height:clamp(560px,80vh,800px);
}
.hero-copy-wrap{display:flex;align-items:center;padding:150px 0 90px var(--pad)}
.hero-copy{max-width:600px}
.hero-copy .eyebrow{color:var(--brass)}
.hero-copy h1{margin-top:26px;color:#fff;max-width:13ch}
.hero-lede{margin-top:30px;color:rgba(255,255,255,.68);max-width:44ch;font-size:clamp(1rem,1.2vw,1.1rem);line-height:1.95}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:52px}
.hero-media{position:relative;min-height:440px}
.hero-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(90deg,var(--navy) 0%,rgba(11,34,48,.55) 12%,rgba(11,34,48,0) 34%);
}

/* 重点动态 */
.hl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(26px,3.2vw,52px)}
.hl-card{display:flex;flex-direction:column;gap:16px}
.hl-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--paper-2);margin-bottom:6px}
.hl-media img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.hl-card:hover .hl-media img{transform:scale(1.05)}
.hl-media .tag{position:absolute;top:0;left:0;z-index:2}
.hl-card h3{font-size:clamp(1.1rem,1.45vw,1.3rem);line-height:1.45;transition:color .3s var(--ease);padding-top:16px;border-top:1px solid var(--line-strong)}
.hl-card:hover h3{color:var(--brass-2)}
.hl-card p{color:var(--ink-3);font-size:.88rem;line-height:1.85;flex:1}
.hl-link{font-size:.78rem;font-weight:600;letter-spacing:.1em;color:var(--brass)}
.hl-card:hover .hl-link{color:var(--brass-2)}

/* 业务 */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(28px,4vw,64px)}
.svc-card{display:flex;flex-direction:column;gap:16px;padding-top:26px;border-top:1px solid var(--line-strong);transition:border-color .35s var(--ease)}
.svc-card:hover{border-top-color:var(--brass)}
.svc-no{font-size:.75rem;font-weight:600;letter-spacing:.2em;color:var(--brass)}
.svc-card h3{font-size:clamp(1.2rem,1.8vw,1.55rem);transition:color .3s var(--ease);margin-top:2px}
.svc-card:hover h3{color:var(--brass-2)}
.svc-card p{color:var(--ink-3);font-size:.9rem;line-height:1.95;flex:1}
.svc-link{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:600;letter-spacing:.1em;color:var(--ink-2);margin-top:6px}
.svc-card:hover .svc-link{color:var(--brass)}
@media (max-width:1024px){
  .hl-grid,.svc-grid{grid-template-columns:1fr;gap:44px}
}

/* 数字 */
.stats{background:var(--navy);color:#fff;padding:clamp(52px,6vw,84px) 0;border-top:1px solid rgba(180,131,74,.3)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(20px,3vw,48px)}
.stat{display:flex;flex-direction:column;gap:10px;padding-left:clamp(16px,2.2vw,30px);border-left:1px solid rgba(255,255,255,.13)}
.stat:first-child{padding-left:0;border-left:0}
.stat dd{margin:0;order:1;font-size:clamp(2.2rem,4.2vw,3.6rem);font-weight:600;letter-spacing:-.04em;line-height:1;color:#fff}
.stat sup{font-size:.4em;color:var(--brass);vertical-align:super;margin-left:1px;font-weight:600}
.stat dt{order:2;font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;color:rgba(255,255,255,.5)}

/* 新闻轮播 */
.carousel{display:grid;grid-template-columns:1.45fr 1fr;gap:clamp(28px,4vw,72px);align-items:stretch}
.carousel-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--paper-2);border:1px solid var(--line-strong)}
.slide{position:absolute;inset:0;opacity:0;pointer-events:none;transition:opacity .8s var(--ease)}
.slide.is-active{opacity:1;pointer-events:auto}
.slide img{width:100%;height:100%;object-fit:cover}
.carousel-count{
  position:absolute;bottom:0;left:0;background:var(--navy);color:#fff;
  padding:10px 16px;font-size:.7rem;letter-spacing:.18em;z-index:2;
}
.carousel-count .sep{color:var(--brass);margin:0 6px}
.carousel-body{display:flex;flex-direction:column;justify-content:space-between;padding:4px 0}
.carousel-texts{position:relative;min-height:230px}
.car-text{position:absolute;inset:0;display:flex;flex-direction:column;gap:14px;opacity:0;visibility:hidden;transition:opacity .5s var(--ease)}
.car-text.is-active{position:relative;opacity:1;visibility:visible}
.car-date{font-size:.72rem;letter-spacing:.16em;color:var(--brass);font-weight:600}
.car-text h3{font-size:clamp(1.2rem,1.9vw,1.6rem);line-height:1.45}
.car-excerpt{color:var(--ink-3);font-size:.88rem;line-height:1.9}
.car-more{margin-top:auto;font-size:.78rem;font-weight:600;letter-spacing:.1em;color:var(--ink-2)}
.carousel-nav{display:flex;align-items:center;gap:18px;margin-top:28px;padding-top:24px;border-top:1px solid var(--line)}
.car-btn{
  width:46px;height:46px;border:1px solid var(--line-strong);background:transparent;
  color:var(--ink-2);cursor:pointer;font-size:.9rem;border-radius:0;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.car-btn:hover{background:var(--navy);border-color:var(--navy);color:#fff}
.car-dots{display:flex;gap:6px;flex:1}
.car-dots .dot{
  width:26px;height:2px;padding:0;border:0;cursor:pointer;
  background:var(--line-strong);transition:background .3s var(--ease);
}
.car-dots .dot.is-active{background:var(--brass)}

/* 树种精選 */
.sp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(22px,2.4vw,40px)}
.sp-card{
  display:flex;flex-direction:column;justify-content:space-between;gap:22px;
  padding:28px 26px 26px;background:var(--white);
  border:1px solid rgba(0,0,0,.07);
  transition:border-color .35s var(--ease),transform .35s var(--ease);
}
.sp-card:hover{border-color:var(--brass);transform:translateY(-3px)}
.sp-card h3{font-size:1.2rem}
.sp-card .latin{display:block;color:var(--muted);font-size:.8rem;margin-top:6px;line-height:1.5}
.sp-card dl{display:flex;flex-direction:column;gap:0;margin:0;font-size:.78rem}
.sp-card dl div{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-top:1px solid var(--line)}
.sp-card dt{color:var(--muted);flex:none}
.sp-card dd{margin:0;text-align:right;color:var(--ink-2);font-weight:500;line-height:1.5;min-width:0;overflow-wrap:anywhere}
.sp-card dd.cites-on{color:var(--cites);font-weight:700}

/* 底部 CTA */
.cta{background:var(--navy);color:#fff;padding:clamp(64px,7.5vw,112px) 0;border-top:1px solid rgba(180,131,74,.3)}
.cta-grid{display:grid;grid-template-columns:1.35fr 1fr;align-items:center;gap:clamp(32px,5vw,80px)}
.cta-grid h2{margin-top:18px;color:#fff}
.cta-grid .lede{margin-top:18px;color:rgba(255,255,255,.65);font-size:.95rem}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;min-height:0}
  .hero-copy-wrap{padding:120px var(--pad) 56px}
  .hero-media{min-height:0}
  .hero-media img{position:static;aspect-ratio:4/3;height:auto}
  .hero-media::after{display:none}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .sp-grid{grid-template-columns:repeat(2,1fr)}
  .carousel,.cta-grid{grid-template-columns:1fr}
  .cta-actions{justify-content:flex-start}
  .carousel-texts{min-height:200px}
}
@media (max-width:600px){
  .sp-grid{grid-template-columns:1fr}
  .sec-head--row{flex-direction:column;align-items:flex-start;gap:14px}
  .stat{padding-left:16px}
  .stats-grid{gap:24px}
}

/* =========================================================================
   列表页通用
   ========================================================================= */
.section--list{padding:clamp(36px,4.5vw,64px) 0 var(--section)}
.result-line{color:var(--muted);font-size:.76rem;letter-spacing:.12em;margin:0 0 24px}
.crumbs{display:flex;gap:10px;align-items:center;padding-top:26px;font-size:.76rem;letter-spacing:.04em;color:var(--muted)}
.crumbs a{transition:color .25s var(--ease)}
.crumbs a:hover{color:var(--brass)}

/* =========================================================================
   树种库
   ========================================================================= */
.filter-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:20px;
  padding-bottom:22px;margin-bottom:8px;border-bottom:1px solid var(--line-strong);
}
#q{
  width:min(340px,100%);padding:11px 14px;font:inherit;font-size:.86rem;
  background:transparent;border:1px solid var(--line-strong);border-radius:0;outline:none;
  transition:border-color .25s var(--ease);
}
#q:focus{border-color:var(--brass)}
#q::placeholder{color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{
  padding:6px 12px;font:inherit;font-size:.75rem;letter-spacing:.02em;
  color:var(--ink-3);background:transparent;border:1px solid var(--line-strong);
  border-radius:0;cursor:pointer;transition:all .25s var(--ease);
}
.chip .num{color:var(--muted);margin-left:3px;font-size:.68rem}
.chip:hover{border-color:var(--ink);color:var(--ink)}
.chip.is-active{background:var(--navy);border-color:var(--navy);color:#fff}
.chip.is-active .num{color:rgba(255,255,255,.65)}

.species-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(22px,2.4vw,40px);margin-top:32px}
.species-card{
  display:flex;flex-direction:column;padding-bottom:22px;background:var(--white);
  border:1px solid rgba(0,0,0,.07);
  transition:border-color .35s var(--ease),transform .35s var(--ease);
}
.species-card:hover{border-color:var(--brass);transform:translateY(-3px)}
.species-thumb{aspect-ratio:4/3;overflow:hidden;background:var(--paper-2)}
.species-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.species-card:hover .species-thumb img{transform:scale(1.045)}
.no-img{display:grid;place-items:center;height:100%;color:var(--muted);font-size:.7rem;letter-spacing:.16em}
.species-head{padding:18px 20px 0}
.species-head h3{font-size:1.1rem}
.species-head .latin{display:block;color:var(--muted);font-size:.76rem;margin-top:5px;line-height:1.5}
.species-meta{display:flex;flex-direction:column;gap:0;margin:14px 0 0;padding:0 20px;font-size:.73rem}
.species-meta div{display:flex;justify-content:space-between;gap:10px;padding-top:7px;border-top:1px solid var(--line)}
.species-meta dt{color:var(--muted);flex:none}
.species-meta dd{margin:0;text-align:right;color:var(--ink-2);min-width:0;overflow-wrap:anywhere}
.species-meta dd.cites-on{color:var(--cites);font-weight:600}
.empty{text-align:center;padding:72px 0;color:var(--muted);font-size:.9rem}
@media (max-width:1200px){.species-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:860px){.species-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.species-grid{grid-template-columns:1fr}}

/* =========================================================================
   树种详情
   ========================================================================= */
.detail{padding:clamp(20px,2.5vw,34px) 0 clamp(48px,6vw,80px);border-bottom:1px solid var(--line)}
.detail-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(32px,5vw,76px);align-items:start}
.detail-media{margin:0}
.detail-media img,.detail-media .no-img{
  aspect-ratio:4/3;width:100%;object-fit:cover;background:var(--paper-2);
  border:1px solid var(--line-strong);
}
.detail-media figcaption{margin-top:12px;font-size:.72rem;letter-spacing:.06em;color:var(--muted)}
.detail-head h1{margin-top:18px;font-size:clamp(1.9rem,3.6vw,3rem)}
.detail-latin{margin-top:10px;font-size:clamp(.95rem,1.3vw,1.1rem);color:var(--brass-2)}
.facts{margin:clamp(26px,3vw,38px) 0 0;border-top:1px solid var(--line-strong)}
.facts div{display:grid;grid-template-columns:100px 1fr;gap:18px;padding:12px 0;border-bottom:1px solid var(--line);font-size:.86rem}
.facts dt{color:var(--muted)}
.facts dd{margin:0;color:var(--ink)}
.facts dd.cites-on{color:var(--cites);font-weight:600}

.section--body{padding:clamp(40px,5vw,68px) 0 0}
.section--body h2{
  margin-bottom:26px;padding-bottom:16px;border-bottom:1px solid var(--line-strong);
  font-size:clamp(1.15rem,1.7vw,1.4rem);
}
.section--body h2 .no{
  display:inline-block;min-width:2.4ch;margin-right:8px;
  color:var(--brass);font-family:var(--sans);font-style:normal;
  font-size:.76em;font-weight:600;letter-spacing:.14em;
  font-variant-numeric:tabular-nums;vertical-align:1px;
}
.section--body p{color:var(--ink-2);font-size:.96rem;line-height:2.05}
.section--body .note{
  margin-top:22px;padding:20px 22px;background:var(--paper-2);
  border-left:2px solid var(--brass);color:var(--ink-3);font-size:.86rem;line-height:1.95;
}
.source{margin-top:clamp(36px,4.5vw,56px);padding:32px 0 clamp(32px,4vw,52px);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.source p:not(.eyebrow){margin-top:14px;color:var(--muted);font-size:.8rem;line-height:1.95}
.source .meta{font-size:.74rem;letter-spacing:.06em}

.related{padding:var(--section) 0 0}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:30px}
.related-head h2{font-size:clamp(1.35rem,2.2vw,1.85rem)}
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(20px,2.4vw,40px)}
.related-card{padding:22px 0 4px;border-top:1px solid var(--line-strong);transition:border-color .3s var(--ease)}
.related-card:hover{border-top-color:var(--brass)}
.related-card h3{font-size:.98rem}
.related-card .latin{display:block;color:var(--muted);font-size:.76rem;margin-top:6px}
.related-meta{margin-top:14px;padding-top:10px;border-top:1px solid var(--line);color:var(--ink-3);font-size:.74rem}
@media (max-width:900px){
  .detail-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:520px){
  .related-grid{grid-template-columns:1fr}
  .facts div{grid-template-columns:84px 1fr;gap:12px}
}

/* =========================================================================
   木材标本
   ========================================================================= */
.product-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(28px,3.4vw,56px)}
.product{display:flex;flex-direction:column;background:var(--white);border:1px solid rgba(0,0,0,.07);transition:border-color .35s var(--ease)}
.product:hover{border-color:var(--brass)}
.product-media{aspect-ratio:16/10;overflow:hidden;background:var(--paper-2);border-bottom:1px solid var(--line)}
.product-media img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.product:hover .product-media img{transform:scale(1.04)}
.product-body{display:flex;flex-direction:column;flex:1;gap:12px;padding:28px 28px 30px}
.product-top{display:flex;align-items:center;gap:12px}
.product-spec{font-size:.72rem;letter-spacing:.1em;color:var(--muted)}
.product-body h3{font-size:1.3rem;line-height:1.4;transition:color .3s var(--ease)}
.product:hover .product-body h3{color:var(--brass-2)}
.product-note{flex:1;color:var(--ink-3);font-size:.86rem;line-height:1.9}
.product-foot{display:flex;justify-content:space-between;align-items:baseline;margin-top:8px;padding-top:16px;border-top:1px solid var(--line)}
.product-price{font-size:1.15rem;font-weight:600;letter-spacing:-.01em;color:var(--ink)}
.product-foot .go{font-size:.76rem;letter-spacing:.1em;color:var(--brass)}
.custom-box{margin-top:clamp(48px,6vw,80px);padding:clamp(32px,4vw,52px);background:var(--navy);color:#fff}
.custom-box h3{color:#fff;font-size:clamp(1.2rem,2vw,1.6rem)}
@media (max-width:820px){.product-grid{grid-template-columns:1fr}}

/* 标本详情 */
.main-img{aspect-ratio:4/3;overflow:hidden;background:var(--paper-2);border:1px solid var(--line-strong)}
.main-img img{width:100%;height:100%;object-fit:cover}
.thumbs{display:grid;grid-template-columns:repeat(6,1fr);gap:6px;margin-top:6px}
.thumb{padding:0;border:1px solid transparent;background:var(--paper-2);aspect-ratio:1;overflow:hidden;cursor:pointer;opacity:.55;transition:opacity .25s var(--ease),border-color .25s var(--ease)}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb:hover,.thumb.is-active{opacity:1}
.thumb.is-active{border-color:var(--brass)}
.info h1{margin-top:16px;font-size:clamp(1.8rem,3.2vw,2.6rem);line-height:1.25}
.intro{margin-top:16px;color:var(--ink-3);font-size:.9rem;line-height:1.95}
.buy{margin-top:32px;padding:26px 0;border-top:1px solid var(--line-strong);border-bottom:1px solid var(--line)}
.price{font-size:1.4rem;font-weight:600;letter-spacing:-.02em;color:var(--ink)}
.price-note{margin-top:6px;font-size:.76rem;color:var(--muted)}
.cta-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.wechat-id{margin-top:16px;font-size:.8rem;color:var(--ink-3)}
.copy{font:inherit;font-size:.7rem;margin-left:8px;padding:3px 9px;background:transparent;border:1px solid var(--line-strong);color:var(--ink-3);cursor:pointer}
.copy:hover{border-color:var(--brass);color:var(--brass-2)}
.quick{display:flex;flex-direction:column;gap:0;margin:28px 0 0;font-size:.8rem}
.quick div{display:flex;gap:16px;padding-bottom:9px;border-bottom:1px solid var(--line)}
.quick dt{width:52px;flex:none;color:var(--muted)}
.quick dd{margin:0;color:var(--ink-2)}
.block{padding:clamp(40px,5vw,64px) 0 0}
.block h2{margin-bottom:26px;padding-bottom:16px;border-bottom:1px solid var(--line-strong);font-size:clamp(1.15rem,1.7vw,1.4rem)}
.block h2 .no{display:inline-block;min-width:2.4ch;margin-right:8px;color:var(--brass);font-family:var(--sans);font-style:normal;font-size:.76em;font-weight:600;letter-spacing:.14em;font-variant-numeric:tabular-nums}
.use{display:grid;grid-template-columns:30px 1fr;gap:16px;padding:12px 0;border-bottom:1px solid var(--line)}
.use-no{font-size:.76rem;color:var(--brass);padding-top:5px}
.use p{color:var(--ink-2);font-size:.94rem;line-height:1.9}
.use-plain{color:var(--ink-2);font-size:.94rem;line-height:2;margin-bottom:8px}
.spec-table{margin:0;border-top:1px solid var(--line-strong)}
.spec-table div{display:grid;grid-template-columns:116px 1fr;gap:22px;padding:13px 0;border-bottom:1px solid var(--line);font-size:.88rem}
.spec-table dt{color:var(--muted)}
.spec-table dd{margin:0;color:var(--ink);line-height:1.75}
.value{display:grid;grid-template-columns:34px 1fr;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.value-no{font-size:.95rem;color:var(--brass)}
.value h4{margin-bottom:6px;font-size:.95rem}
.value p{color:var(--ink-3);font-size:.88rem;line-height:1.9}
.order{padding-bottom:clamp(40px,5vw,72px)}
.order p{color:var(--ink-2);font-size:.9rem;line-height:1.95;margin-bottom:8px}
.order .disclaim{margin-top:20px;padding:18px 22px;background:var(--paper-2);border-left:2px solid var(--brass);color:var(--ink-3);font-size:.82rem;line-height:1.9}
@media (max-width:900px){
  .thumbs{grid-template-columns:repeat(4,1fr)}
}
@media (max-width:520px){
  .thumbs{grid-template-columns:repeat(3,1fr)}
  .spec-table div{grid-template-columns:92px 1fr;gap:12px}
}

/* =========================================================================
   关于我们
   ========================================================================= */
.stat-band{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(24px,4vw,56px)}
.stat-band div{display:flex;flex-direction:column;gap:8px;padding-top:18px;border-top:1px solid var(--brass)}
.stat-band .num{font-size:clamp(1.8rem,3.2vw,2.7rem);font-weight:600;letter-spacing:-.035em;line-height:1}
.stat-band small{font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(28px,3.6vw,56px)}
.team{padding:28px 0 8px;border-top:1px solid var(--line-strong)}
.team-role{font-size:.68rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--brass)}
.team h3{margin-top:12px;font-size:1.3rem}
.team p:last-child{margin-top:12px;color:var(--ink-3);font-size:.84rem;line-height:1.9}
.standard{padding-top:28px;border-top:1px solid var(--line-strong)}
.standard p{color:var(--ink-2);font-size:.98rem;line-height:2.05}
.standard strong{font-weight:600;color:var(--ink)}
.standard-note{color:var(--ink-3)!important;margin-top:16px!important;font-size:.84rem!important}
.biz-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(24px,3vw,44px)}
.biz{padding:24px 0 4px;border-top:1px solid var(--brass)}
.biz-no{font-size:.72rem;letter-spacing:.2em;color:var(--muted)}
.biz h3{margin-top:14px;font-size:1.08rem}
.biz p{margin-top:8px;color:var(--muted);font-size:.79rem;line-height:1.8}
.values{border-top:1px solid var(--line-strong)}
.values .value{display:grid;grid-template-columns:60px 1fr;gap:22px;padding:26px 0;border-bottom:1px solid var(--line)}
.values .value-no{font-size:.76rem;letter-spacing:.16em;color:var(--brass);padding-top:5px}
.values .value h3{margin-bottom:8px;font-size:1.02rem}
.values .value p{color:var(--ink-3);max-width:64em;font-size:.88rem;line-height:1.95}
.contact-strip{margin-top:var(--section);padding:clamp(48px,6vw,84px) 0;background:var(--navy);color:#fff}
.contact-inner{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:40px}
.contact-strip .eyebrow{color:var(--brass)}
.contact-strip h2{margin-top:16px;color:#fff;font-size:clamp(1.5rem,2.8vw,2.1rem)}
.contact-line{margin-top:14px;color:rgba(255,255,255,.68);font-size:.92rem}
.contact-right{text-align:right;color:rgba(255,255,255,.68);font-size:.88rem;line-height:2}
.contact-right .num{color:rgba(255,255,255,.45);font-size:.78rem}
@media (max-width:900px){
  .stat-band,.biz-grid{grid-template-columns:repeat(2,1fr)}
  .team-grid{grid-template-columns:1fr}
  .contact-right{text-align:left}
}

/* =========================================================================
   检测业务
   ========================================================================= */
.table-wrap{border:1px solid var(--line-strong);overflow-x:auto;background:var(--white)}
.price-table{border-collapse:collapse;width:100%;min-width:760px;font-size:.84rem}
.price-table th{
  padding:15px 18px;text-align:left;background:var(--navy);color:rgba(255,255,255,.72);
  font-size:.68rem;font-weight:500;letter-spacing:.18em;text-transform:uppercase;white-space:nowrap;
  border-bottom:1px solid var(--navy);
}
.price-table td{padding:18px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink-2);line-height:1.75}
.price-table tr:last-child td{border-bottom:0}
.price-table tbody tr{transition:background .25s var(--ease)}
.price-table tbody tr:hover{background:var(--paper)}
.price-table .item{color:var(--ink);font-weight:600;white-space:nowrap}
.price-table .basis{max-width:260px;color:var(--ink-3);font-size:.79rem}
.price-table .price{white-space:nowrap}
.price-table .price span{display:block}
.price-table .price span:first-child{color:var(--brass-2);font-weight:600}
.notes{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(20px,2.6vw,40px);margin-top:30px}
.note-item{padding:20px 0 4px;border-top:1px solid var(--line-strong)}
.note-item h4{margin-bottom:8px;font-size:.8rem;letter-spacing:.04em}
.note-item p{color:var(--ink-3);font-size:.76rem;line-height:1.9}
.local-note{margin-top:24px;padding:20px 22px;background:var(--paper-2);border-left:2px solid var(--brass);color:var(--ink-3);font-size:.84rem;line-height:1.9}
.steps{margin:0;padding:0;list-style:none;border-top:1px solid var(--line-strong)}
.step{display:grid;grid-template-columns:72px 1fr;gap:26px;padding:28px 0;border-bottom:1px solid var(--line)}
.step-no{font-size:.78rem;letter-spacing:.16em;color:var(--brass);padding-top:5px}
.step h3{margin-bottom:8px;font-size:1.02rem}
.step p{color:var(--ink-3);max-width:64em;font-size:.88rem;line-height:1.95}
.two-col{display:grid;grid-template-columns:1.08fr .92fr;gap:clamp(36px,5vw,72px);align-items:start}
.faq{margin:0;border-top:1px solid var(--line-strong)}
.faq div{padding:20px 0;border-bottom:1px solid var(--line)}
.faq dt{font-size:.92rem;font-weight:600;color:var(--ink)}
.faq dd{margin:9px 0 0;color:var(--ink-3);font-size:.86rem;line-height:1.95}
.pay-box{position:sticky;top:100px;padding:34px;background:var(--white);border:1px solid var(--line-strong);border-top:3px solid var(--brass)}
.pay-box h3{margin-top:14px;font-size:1.15rem}
.pay{margin:24px 0 0}
.pay div{display:grid;grid-template-columns:76px 1fr;gap:14px;padding:11px 0;border-bottom:1px solid var(--line);font-size:.82rem}
.pay dt{color:var(--muted);flex:none}
.pay dd{margin:0;color:var(--ink);line-height:1.65}
.pay-cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.pay-foot{margin-top:20px;color:var(--muted);font-size:.74rem;line-height:1.8}
@media (max-width:1000px){
  .notes{grid-template-columns:repeat(2,1fr)}
  .two-col{grid-template-columns:1fr}
  .pay-box{position:static}
}
@media (max-width:700px){
  .table-wrap{border:0;background:transparent;overflow:visible}
  .price-table{min-width:0;display:block}
  .price-table thead{display:none}
  .price-table tbody{display:block}
  .price-table tr{display:block;margin-bottom:14px;border:1px solid var(--line-strong);background:var(--white)}
  .price-table td{display:grid;grid-template-columns:66px 1fr;gap:12px;padding:10px 16px;border-bottom:1px solid var(--line);font-size:.8rem}
  .price-table td:last-child{border-bottom:0}
  .price-table td::before{font-size:.68rem;letter-spacing:.08em;color:var(--muted)}
  .price-table td:first-child::before{content:"项目"}
  .price-table td:nth-child(2)::before{content:"依据"}
  .price-table td:nth-child(3)::before{content:"单价"}
  .price-table td:nth-child(4)::before{content:"样品"}
  .price-table td:nth-child(5)::before{content:"周期"}
  .price-table .item{border-bottom:1px solid var(--line-strong);font-size:.92rem}
  .price-table .basis{max-width:none}
  .price-table .price{white-space:normal}
}
@media (max-width:560px){
  .notes{grid-template-columns:1fr}
  .step{grid-template-columns:48px 1fr;gap:14px}
}

/* =========================================================================
   新闻动态
   ========================================================================= */
.news-list{border-top:1px solid var(--line-strong)}
.news-item{
  display:grid;grid-template-columns:240px 1fr;gap:clamp(20px,3vw,40px);
  padding:clamp(22px,2.6vw,30px) 0;border-bottom:1px solid var(--line);
  align-items:start;transition:background .3s var(--ease);
}
.news-thumb{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--paper-2)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.news-item:hover .news-thumb img{transform:scale(1.045)}
.thumb-fallback{
  position:absolute;inset:0;display:flex;flex-direction:column;justify-content:space-between;
  padding:18px;color:rgba(255,255,255,.9);background:
    repeating-linear-gradient(90deg,rgba(255,255,255,.045) 0 1px,transparent 1px 8px),var(--navy);
}
.fb-mark{font-size:.68rem;font-weight:700;letter-spacing:.26em}
.fb-tag{font-size:.7rem;letter-spacing:.16em;color:rgba(255,255,255,.5)}
.news-body{display:flex;flex-direction:column;gap:10px;padding-top:2px}
.news-date{font-size:.72rem;letter-spacing:.16em;color:var(--brass);font-weight:600}
.news-body h2{font-size:clamp(1rem,1.5vw,1.2rem);line-height:1.55;transition:color .25s var(--ease)}
.news-item:hover .news-body h2{color:var(--brass-2)}
.news-excerpt{color:var(--ink-3);font-size:.83rem;line-height:1.85}
.news-more{margin-top:4px;font-size:.74rem;letter-spacing:.1em;color:var(--muted)}
.news-item:hover .news-more{color:var(--brass)}
@media (max-width:760px){
  .news-item{grid-template-columns:1fr;gap:16px}
  .news-thumb{aspect-ratio:16/9}
}

/* =========================================================================
   行业知识
   ========================================================================= */
.art-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(24px,3vw,48px)}
.art{
  display:flex;flex-direction:column;gap:10px;padding:26px 0 26px;
  border-top:1px solid var(--line-strong);transition:border-color .3s var(--ease);
}
.art:hover{border-top-color:var(--brass)}
.art-date{font-size:.7rem;letter-spacing:.16em;color:var(--brass);font-weight:600}
.art h2{font-size:1.12rem;line-height:1.55;transition:color .25s var(--ease)}
.art:hover h2{color:var(--brass-2)}
.art-excerpt{flex:1;color:var(--ink-3);font-size:.82rem;line-height:1.85}
.art-more{font-size:.74rem;letter-spacing:.1em;color:var(--muted)}
.art:hover .art-more{color:var(--brass)}
@media (max-width:760px){.art-grid{grid-template-columns:1fr}}

/* =========================================================================
   文章详情（新闻 / 知识）
   ========================================================================= */
.article{padding:clamp(28px,4vw,52px) 0 var(--section)}
.art-head{margin-bottom:36px;padding-bottom:30px;border-bottom:1px solid var(--line-strong)}
.art-head h1{margin-top:18px;font-size:clamp(1.65rem,3vw,2.4rem);line-height:1.4}
.art-date:empty{display:none}
.art-date{margin-top:16px;font-size:.74rem;letter-spacing:.12em;color:var(--muted)}
.prose{font-size:.96rem;line-height:2.05;color:var(--ink-2)}
.prose p{margin:0 0 1.2em;line-height:2.05}
.prose h1,.prose h2,.prose h3{
  margin:2.2em 0 .8em;padding-bottom:12px;border-bottom:1px solid var(--line-strong);
  font-size:1.12rem;font-weight:600;line-height:1.55;color:var(--ink);
}
.prose h4{margin:1.8em 0 .7em;font-size:1rem;color:var(--ink)}
.prose strong,.prose b{color:var(--ink);font-weight:600}
.prose img{width:100%;height:auto;margin:1.8em 0;background:var(--paper-2)}
.prose figure{margin:1.8em 0}
.prose figcaption{font-size:.75rem;color:var(--muted);text-align:center;margin-top:10px}
.prose table{border-collapse:collapse;width:100%;margin:1.8em 0;font-size:.84rem}
.prose td,.prose th{padding:11px 14px;border:1px solid var(--line);line-height:1.7}
.prose th{background:var(--paper-2);font-weight:600;text-align:left}
.prose ul,.prose ol{margin:0 0 1.25em;padding-left:1.5em;line-height:2}
.prose li{margin-bottom:.4em}
.prose a{color:var(--brass-2);border-bottom:1px solid rgba(176,131,74,.45)}
.prose a:hover{border-bottom-color:var(--brass)}
.prose blockquote{margin:1.6em 0;padding:6px 0 6px 22px;border-left:2px solid var(--brass);color:var(--ink-3)}
.art-foot{margin-top:44px;padding-top:30px;border-top:1px solid var(--line)}
.art-foot p{color:var(--muted);font-size:.82rem;line-height:1.95}
.art-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}

/* =========================================================================
   联系我们
   ========================================================================= */
.contact-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(32px,5vw,68px);align-items:start}
.channels{display:grid;grid-template-columns:1fr 1fr;gap:clamp(20px,2.6vw,40px)}
.channel{display:flex;flex-direction:column;gap:6px;padding:26px 0 10px;border-top:1px solid var(--line-strong);transition:border-color .3s var(--ease)}
.channel:hover{border-top-color:var(--brass)}
.ch-label{font-size:.66rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}
.ch-value{font-size:1.1rem;font-weight:600;letter-spacing:-.01em;color:var(--ink)}
.ch-note{font-size:.74rem;color:var(--muted)}
.address{padding:36px;background:var(--white);border:1px solid var(--line-strong);border-top:3px solid var(--brass)}
.address h2{margin-top:14px;font-size:1.3rem}
.addr-main{margin-top:18px;font-size:1rem;line-height:1.95;color:var(--ink)}
.addr-meta{margin-top:8px;font-size:.78rem;color:var(--muted)}
.addr-note{margin-top:26px;padding-top:22px;border-top:1px solid var(--line);color:var(--ink-3);font-size:.82rem;line-height:1.95}
.addr-note strong{color:var(--ink);font-weight:600}
.addr-note p+p{margin-top:8px}
.wechat{margin-top:26px;padding-top:22px;border-top:1px solid var(--line)}
.wechat-id{margin-top:8px;font-size:1.2rem;font-weight:600;letter-spacing:.02em;color:var(--brass-2)}
.wechat-note{margin-top:4px;font-size:.74rem;color:var(--muted)}
.route-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(24px,3vw,48px)}
.route{display:flex;flex-direction:column;gap:8px;padding:26px 0 4px;border-top:1px solid var(--brass)}
.route-no{font-size:.72rem;letter-spacing:.18em;color:var(--brass)}
.route h3{font-size:1.02rem}
.route p{flex:1;color:var(--ink-3);font-size:.82rem;line-height:1.9}
.route-go{font-size:.76rem;letter-spacing:.06em;color:var(--muted)}
@media (max-width:960px){.contact-grid{grid-template-columns:1fr}}
@media (max-width:820px){.route-grid{grid-template-columns:1fr}}
@media (max-width:560px){.channels{grid-template-columns:1fr}}

/* =========================================================================
   404
   ========================================================================= */
.nf{display:flex;align-items:center;min-height:clamp(540px,74vh,800px);padding:140px 0 90px;background:var(--navy);color:#fff;position:relative;overflow:hidden}
.nf::after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(80% 100% at 80% 0%,rgba(176,131,74,.14),transparent 60%)}
.nf-inner{position:relative;z-index:1}
.nf-code{font-size:clamp(3.6rem,9vw,7rem);font-weight:600;letter-spacing:-.05em;line-height:1;color:rgba(255,255,255,.16)}
.nf h1{margin-top:18px;color:#fff;font-size:clamp(1.7rem,3.2vw,2.6rem)}
.nf .lede{margin-top:18px;color:rgba(255,255,255,.68)}
.nf-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:40px}

/* =========================================================================
   细节与可访问性
   ========================================================================= */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
}