:root{
  --ink:#1E1B16;
  --ink-deep:#14110D;
  --paper:#FBF2E4;
  --paper-band:#F7EBD7;
  --paper-line:#2A2620;
  --gold:#E07B00;
  --brick:#C43B1E;
  --gold-dark:#C46900;
  --white:#F7F4EE;
  --grey:#5C574E;
  --grey-dark:#8A857C;
  --line-light:rgba(30,27,22,.12);
  --line-strong:rgba(30,27,22,.22);
  --font-display:'Arial Narrow','Helvetica Neue',Arial,'Microsoft YaHei',sans-serif;
  --font-body:'Microsoft YaHei','PingFang SC','Hiragino Sans GB',sans-serif;
  --font-mono:ui-monospace,'Consolas','Courier New',monospace;
  --pad:80px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  background:#F08300;
  color:var(--ink);
  font-family:var(--font-body);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;}
a{text-decoration:none;color:inherit;}
button{font-family:inherit;border:none;cursor:pointer;}

/* ---------- 通用 ---------- */
.wrap{width:100%;max-width:1440px;margin:0 auto;padding:0 var(--pad);}
.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.12em;
  color:var(--gold);text-transform:uppercase;
}
.eyebrow--dark{color:var(--gold-dark);}
.sec-title{
  font-size:42px;font-weight:700;line-height:1.36;
  letter-spacing:-.01em;
}
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s cubic-bezier(.16,1,.3,1),transform .8s cubic-bezier(.16,1,.3,1);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

/* ---------- 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:100;
  background:rgba(245,241,232,.9);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-light);
  transition:background .3s;
}
.nav__inner{
  height:88px;display:flex;align-items:center;justify-content:space-between;
  max-width:1440px;margin:0 auto;padding:0 var(--pad);
}
.brand{display:flex;align-items:center;gap:14px;}
.brand__mark{width:46px;height:46px;flex:none;}
.brand__mark svg{width:100%;height:100%;display:block;}
.logoimg{width:100%;height:100%;object-fit:contain;display:block;}
.foot__logo .logoimg{width:28px;height:28px;}
.visual__tag .logoimg{width:15px;height:15px;filter:drop-shadow(0 1px 2px rgba(0,0,0,.5));}
.brand__txt{display:flex;flex-direction:column;gap:2px;}
.brand__en{font-family:var(--font-display);font-size:25px;font-weight:700;line-height:1.1;letter-spacing:.04em;}
.brand__cn{font-size:17px;font-weight:700;color:var(--grey);letter-spacing:.22em;align-self:flex-start;}
.nav__menu{display:flex;align-items:center;gap:44px;}
.nav__link{
  font-size:17px;color:#4A453E;position:relative;padding:6px 0;
  transition:color .25s;
}
.nav__link::after{
  content:'';position:absolute;left:0;bottom:0;width:0;height:1px;
  background:var(--gold);transition:width .3s ease;
}
.nav__link:hover{color:var(--white);}
.nav__link:hover::after{width:100%;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 24px;font-size:14px;font-weight:500;
  background:var(--brick);color:#fff;
  transition:transform .25s ease,box-shadow .25s ease,background .25s;
}
.btn:hover{background:#C66C00;box-shadow:0 8px 24px rgba(224,123,0,.28);transform:translateY(-1px);}
.nav__burger{display:none;flex-direction:column;gap:5px;background:none;padding:8px;}
.nav__burger span{width:24px;height:1.5px;background:#fff;transition:.3s;}
.nav.open .nav__burger span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.nav.open .nav__burger span:nth-child(2){opacity:0;}
.nav.open .nav__burger span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

/* ---------- 首屏 ---------- */
.hero{
  display:block;
  padding:150px var(--pad) 130px;
  position:relative;overflow:hidden;background:var(--paper);
}
.hero__inner{
  max-width:1440px;margin:0 auto;width:100%;
  position:relative;z-index:2;
}
.hero::before{
  content:'';position:absolute;inset:0;z-index:0;
  background:url('factory.jpg') center/cover no-repeat;
  transform:scale(1.02);
}
.hero::after{
  content:'';position:absolute;inset:0;z-index:1;
  background:
    linear-gradient(to right, rgba(245,241,232,.96) 0%, rgba(245,241,232,.88) 45%, rgba(245,241,232,.42) 100%),
    linear-gradient(to top, rgba(245,241,232,1) 0%, rgba(245,241,232,0) 18%),
    linear-gradient(to bottom, rgba(245,241,232,.92) 0%, rgba(245,241,232,0) 16%);
}
.hero__left{display:flex;flex-direction:column;gap:26px;position:relative;z-index:2;max-width:760px;color:var(--ink);}
.badge{
  display:inline-flex;align-items:center;gap:10px;align-self:flex-start;
  padding:8px 14px;border:1px solid rgba(30,27,22,.3);
  background:rgba(245,241,232,.6);backdrop-filter:blur(16px);
  font-size:13px;font-weight:500;color:var(--gold);
}
.hero h1{
  font-size:clamp(38px,5vw,68px);font-weight:700;line-height:1.26;
  letter-spacing:-.02em;
}
.hero h1 em{font-style:normal;color:var(--brick);}
.hero__desc{font-size:17px;line-height:1.88;color:var(--grey);max-width:600px;}
.hero__actions{display:flex;gap:16px;flex-wrap:wrap;align-items:center;}
.btn--lg{padding:18px 36px;font-size:16px;}
.btn--ghost{
  background:rgba(245,241,232,.5);color:var(--ink);
  border:1px solid var(--line-strong);
}
.btn--ghost:hover{background:#fff;box-shadow:none;color:var(--ink);}
.hero__trust{font-size:13px;color:var(--grey-dark);letter-spacing:.02em;}
.hero__rule{height:1px;background:rgba(30,27,22,.18);margin-top:6px;}

/* 首屏视觉 */
.visual{
  position:relative;aspect-ratio:580/460;
  background:#1A2E3C;
  border:1px solid var(--line-light);
  box-shadow:0 30px 60px -10px rgba(0,0,0,.5);
  overflow:hidden;
}

.visual__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.visual__shade{position:absolute;inset:auto 0 0 0;height:38%;
  background:linear-gradient(to top,rgba(10,14,18,.72),rgba(10,14,18,0));}
.visual__tag{
  position:absolute;top:28px;left:32px;
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 12px;font-size:12px;font-family:var(--font-mono);letter-spacing:.08em;
  color:#fff;background:rgba(10,14,18,.55);border:1px solid rgba(255,255,255,.35);
  backdrop-filter:blur(8px);
}
.visual__tag svg{width:14px;height:14px;flex:none;}

.visual__grid{
  position:absolute;inset:0;
  background-image:linear-gradient(var(--line-light) 1px,transparent 1px),linear-gradient(90deg,var(--line-light) 1px,transparent 1px);
  background-size:40px 40px;
  opacity:.25;
}
.visual__no{
  position:absolute;top:28px;left:32px;
  font-family:var(--font-mono);font-size:12px;color:#6B6B6B;letter-spacing:.08em;
}
.visual__tri{
  position:absolute;left:50%;top:44%;transform:translate(-50%,-50%);
  width:56%;max-width:300px;
}
.visual__chips{position:absolute;left:32px;bottom:32px;display:flex;flex-direction:column;gap:8px;align-items:flex-start;}
.chip{
  display:inline-flex;padding:10px 14px;font-size:12px;
  font-family:var(--font-mono);letter-spacing:.02em;
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.08);color:#C8C8C8;
  backdrop-filter:blur(12px);
}
.chip--gold{
  border-color:rgba(224,123,0,.45);background:rgba(224,123,0,.10);color:var(--gold-dark);
}

/* ---------- 能力矩阵 ---------- */
.cap{padding:88px var(--pad);max-width:1440px;margin:0 auto;}
.cap__topline{height:1px;background:var(--line-light);margin-bottom:48px;}
.sec-head{
  display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:48px;
}
.sec-head__left{display:flex;flex-direction:column;gap:16px;}
.sec-head__desc{
  font-size:15px;line-height:1.75;color:var(--grey);
  max-width:460px;text-align:right;flex:none;
}
.cap__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.cap__card{
  padding:32px 28px;display:flex;flex-direction:column;gap:16px;
  background:#FDFBF5;border:1px solid var(--line-light);
  transition:transform .35s cubic-bezier(.16,1,.3,1),background .35s,border-color .35s;
  position:relative;overflow:hidden;
}
.cap__card::before{
  content:'';position:absolute;top:0;left:0;width:0;height:2px;background:var(--gold);
  transition:width .5s cubic-bezier(.16,1,.3,1);
}
.cap__card:hover{transform:translateY(-4px);background:#fff;border-color:rgba(43,58,74,.35);}
.cap__card:hover::before{width:100%;}
.cap__card--hl{background:rgba(43,58,74,.06);border-color:rgba(43,58,74,.4);}
.cap__num{font-family:var(--font-mono);font-size:13px;color:var(--gold);}
.cap__name{font-size:22px;font-weight:700;line-height:1.36;}
.cap__text{font-size:14px;line-height:1.72;color:var(--grey);}

/* ---------- 产品 ---------- */
.prod{background:var(--paper-band);color:var(--paper-line);padding:88px 0;}
.prod__inner{max-width:1440px;margin:0 auto;padding:0 var(--pad);}
.prod .sec-title{color:var(--paper-line);}
.prod .sec-head__desc{color:#5A5650;}
.prod__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
@media (max-width:1200px){.prod__grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:600px){.prod__grid{grid-template-columns:1fr;}}
.pcard{
  background:#fff;border:1px solid rgba(30,27,22,.16);
  display:flex;flex-direction:column;
  transition:box-shadow .4s cubic-bezier(.16,1,.3,1),transform .4s cubic-bezier(.16,1,.3,1);
}
.pcard:hover{box-shadow:0 24px 48px -16px rgba(30,27,22,.22);transform:translateY(-3px);}
.pcard__media{
  position:relative;aspect-ratio:618/240;overflow:hidden;
  background-size:cover;background-position:center;
}
.pcard__media--1{background:linear-gradient(135deg,#3D3B36 0%,#8C8477 100%);}
.pcard__media--2{background:linear-gradient(135deg,#6B665C 0%,#B3AD9F 100%);}
.pcard__media--3{background:linear-gradient(135deg,#57534D 0%,#9E998F 100%);}
.pcard__media svg{position:absolute;inset:0;width:100%;height:100%;}

/* ---------- P-01 图组：实景照片 + 爆炸图 ---------- */
.pcard--hero{grid-column:auto;}
/* 4 列布局下的卡片适配 */
.pcard__body{padding:22px 20px 24px;}
.pcard__name{font-size:19px;}
.pcard--dark .pcard__name{font-size:22px;}
.pcard--dark .pcard__body{padding:22px 22px 26px;}
.duo{display:grid;grid-template-columns:1fr;}
.duo__pane{position:relative;overflow:hidden;}
.duo__pane--render{aspect-ratio:1108/340;background:#0F1820;}
.duo__pane svg{position:absolute;inset:0;width:100%;height:100%;display:block;}
.duo__pane img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;}
.duo__pane--wide{grid-column:1 / -1;aspect-ratio:1108/640;background:#fff;}
@media (max-width:860px){.duo__pane--wide{aspect-ratio:1108/756;}}
.duo__label{
  position:absolute;top:16px;left:18px;z-index:3;
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 11px;font-size:11px;letter-spacing:.06em;
  font-family:var(--font-mono);
}
.duo__label--render{background:rgba(10,16,22,.62);border:1px solid rgba(255,255,255,.32);color:#F1EDE3;backdrop-filter:blur(8px);}
.duo__label i{width:5px;height:5px;border-radius:50%;background:#E07B00;display:block;flex:none;animation:duoDot 2.4s ease-in-out infinite;}
@keyframes duoDot{0%,100%{opacity:1;}50%{opacity:.25;}}
.duo__chip{
  position:absolute;left:18px;bottom:16px;z-index:3;
  padding:6px 10px;font-size:11px;font-family:var(--font-mono);
  background:rgba(255,255,255,.92);border:1px solid var(--paper-line);color:var(--paper-line);
}
@media (max-width:860px){
  .duo{grid-template-columns:1fr;}
  .duo__pane--render{min-height:260px;}
}

.pcard__chip{
  position:absolute;left:20px;bottom:20px;
  padding:6px 10px;font-size:11px;font-family:var(--font-mono);
  background:rgba(255,255,255,.9);border:1px solid var(--paper-line);color:var(--paper-line);
}
.pcard__body{padding:26px 28px 28px;display:flex;flex-direction:column;gap:12px;}
.pcard__no{font-family:var(--font-mono);font-size:12px;color:var(--gold-dark);}
.pcard__name{font-size:24px;font-weight:700;line-height:1.33;}
.pcard__text{font-size:14px;line-height:1.72;color:#5A5650;}
.pcard__tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:2px;}
.tag{
  padding:5px 10px;font-size:11px;color:#3A3733;
  background:rgba(26,26,26,.05);
}
.pcard--dark{background:var(--paper-line);border-color:var(--paper-line);}
.pcard--dark .pcard__top{
  aspect-ratio:618/240;padding:28px 32px;display:flex;flex-direction:column;
  justify-content:space-between;
}
.pcard--dark .pcard__no{color:var(--gold);}
.pcard--dark .pcard__name{color:var(--white);font-size:30px;line-height:1.4;}
.pcard--dark .pcard__text{color:var(--grey);font-size:13px;}
.pcard--dark .pcard__body{padding:26px 32px 30px;gap:14px;}
.pcard__link{
  display:inline-flex;align-items:center;gap:8px;align-self:flex-start;
  font-size:14px;font-weight:500;color:var(--gold);
  border-bottom:1px solid rgba(46,159,216,.6);padding-bottom:6px;
  transition:gap .3s;
}
.pcard__link:hover{gap:14px;}
.pcard__note{font-size:12px;color:var(--grey-dark);}

/* ---------- 案例 ---------- */
.cases{padding:88px var(--pad);max-width:1440px;margin:0 auto;}
.cases__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.kcase{
  background:#FDFBF5;border:1px solid var(--line-light);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .4s cubic-bezier(.16,1,.3,1),border-color .4s;
}
.kcase:hover{transform:translateY(-4px);border-color:rgba(43,58,74,.4);}
.kcase__media{position:relative;aspect-ratio:404/300;overflow:hidden;}
.kcase__media svg{position:absolute;inset:0;width:100%;height:100%;}

/* ---------- 案例图墙 ---------- */
.case-gallery{position:absolute;inset:0;display:grid;grid-template-columns:repeat(3,1fr);gap:2px;background:#1E1B16;}
.case-gallery a{position:relative;overflow:hidden;display:block;}
.case-gallery img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.16,1,.3,1),opacity .3s;}
.case-gallery a:hover img{transform:scale(1.07);}
.case-gallery a::after{content:'';position:absolute;inset:0;background:rgba(224,123,0,0);transition:background .3s;}
.case-gallery a:hover::after{background:rgba(224,123,0,.08);}
.lightbox{position:fixed;inset:0;z-index:300;display:none;align-items:center;justify-content:center;background:rgba(12,10,8,.92);cursor:zoom-out;padding:36px;}
.lightbox.open{display:flex;}
.lightbox img{max-width:92vw;max-height:88vh;object-fit:contain;box-shadow:0 40px 90px rgba(0,0,0,.6);}
.lightbox__close{position:absolute;top:20px;right:26px;font-size:30px;line-height:1;color:#F5F1E8;background:none;opacity:.75;}
.lightbox__close:hover{opacity:1;}
/* 灯箱 · 上一张 / 下一张切换 */
.lightbox__nav{
  position:absolute;top:50%;transform:translateY(-50%);
  width:52px;height:52px;border:none;border-radius:50%;
  background:rgba(255,255,255,.10);color:#F5F1E8;font-size:24px;line-height:1;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background .25s;user-select:none;
}
.lightbox__nav:hover{background:#E07B00;}
.lightbox__nav--prev{left:26px;}
.lightbox__nav--next{right:26px;}
.lightbox__counter{
  position:absolute;bottom:22px;left:50%;transform:translateX(-50%);
  font-size:13px;color:rgba(245,241,232,.8);letter-spacing:.08em;
}
.kcase__year{
  position:absolute;top:22px;left:24px;
  font-family:var(--font-mono);font-size:13px;color:var(--gold);
}
.kcase__chip{
  position:absolute;left:24px;bottom:20px;
  padding:6px 10px;font-size:11px;font-family:var(--font-mono);
  background:rgba(0,0,0,.55);border:1px solid rgba(255,255,255,.3);color:#E0E0E0;
  backdrop-filter:blur(6px);
}
.kcase__body{padding:24px 26px 28px;display:flex;flex-direction:column;gap:10px;}
.kcase__name{font-size:20px;font-weight:700;line-height:1.4;}
.kcase__text{font-size:13px;line-height:1.7;color:var(--grey);}
.btn--outline{
  background:transparent;border:1px solid var(--line-strong);color:var(--ink);
  padding:12px 22px;
}
.btn--outline:hover{background:rgba(30,27,22,.05);box-shadow:none;}

/* ---------- 关于 ---------- */
.about{
  display:grid;grid-template-columns:1fr 560px;gap:80px;
  padding:88px var(--pad);max-width:1440px;margin:0 auto;
  align-items:start;
}
.about__left{display:flex;flex-direction:column;gap:24px;}
.about__title{font-size:clamp(30px,3.4vw,40px);font-weight:700;line-height:1.4;white-space:pre-line;}
.about__body{font-size:16px;line-height:1.9;color:var(--grey);}
.about__rule{height:1px;background:var(--line-light);}
.about__facts{display:flex;flex-direction:column;gap:14px;}
.fact{display:flex;gap:12px;font-size:14px;line-height:1.7;color:#3A362F;align-items:flex-start;}
.fact::before{
  content:'';flex:none;width:6px;height:6px;margin-top:9px;
  background:var(--gold);transform:rotate(45deg);
}
.stats{display:grid;grid-template-columns:1fr 1fr;}
.stat{padding:36px 0;border-bottom:1px solid var(--line-light);}
.stat:nth-child(odd){padding-right:28px;border-right:1px solid var(--line-light);}
.stat:nth-child(even){padding-left:28px;}
.stat__num{
  font-family:var(--font-display);font-size:52px;font-weight:700;line-height:1.08;
  letter-spacing:.01em;
}
.stat__num--gold{color:var(--brick);}
.stat__label{font-size:13px;color:var(--grey);margin-top:8px;}

/* ---------- 联系 ---------- */
.contact{background:var(--paper-band);color:var(--paper-line);padding:88px 0;}
.contact__inner{
  max-width:1440px;margin:0 auto;padding:0 var(--pad);
  display:grid;grid-template-columns:1fr 520px;gap:72px;align-items:start;
}
.contact__left{display:flex;flex-direction:column;gap:26px;}
.contact__title{font-size:clamp(30px,3.8vw,44px);font-weight:700;line-height:1.42;white-space:pre-line;color:var(--paper-line);}
.contact__desc{font-size:15px;line-height:1.87;color:#5A5650;max-width:520px;}
.contact__list{display:flex;flex-direction:column;gap:14px;}
.contact__item{display:flex;gap:14px;font-size:14px;color:#3A3733;line-height:1.7;}
.contact__item b{font-weight:500;color:#8A8580;flex:none;width:44px;}
.form{
  background:#fff;border:1px solid var(--paper-line);padding:36px;
  display:flex;flex-direction:column;gap:16px;
  box-shadow:0 18px 40px -8px rgba(26,26,26,.08);
}
.form__title{font-size:22px;font-weight:700;}
.form__sub{font-size:12px;color:#8A8580;line-height:1.6;margin-top:-8px;}
.field{
  display:flex;padding:14px 16px;font-size:14px;width:100%;
  background:rgba(26,26,26,.03);border:1px solid rgba(26,26,26,.18);
  color:var(--paper-line);font-family:inherit;
  transition:border-color .25s,background .25s;
}
.field::placeholder{color:#8A8580;}
.field:focus{outline:none;border-color:var(--gold-dark);background:#fff;}
textarea.field{resize:vertical;min-height:92px;line-height:1.6;}
.form__submit{
  width:100%;padding:16px;background:var(--paper-line);color:var(--white);
  font-size:15px;font-weight:500;transition:background .25s,transform .25s;
}
.form__submit:hover{background:#000;transform:translateY(-1px);}
.form__note{font-size:11px;color:#8A8580;line-height:1.6;}
.form__ok{
  display:none;padding:14px 16px;font-size:13px;line-height:1.6;
  background:rgba(122,168,116,.12);border:1px solid rgba(122,168,116,.5);color:#3F6B3A;
}
.form__ok.show{display:block;}
.form__err{
  display:none;padding:14px 16px;font-size:13px;line-height:1.6;
  background:rgba(192,85,63,.10);border:1px solid rgba(192,85,63,.45);color:#A2462F;
}
.form__err.show{display:block;}
.form__submit[disabled]{opacity:.55;cursor:not-allowed;transform:none;}

/* ---------- 页脚 ---------- */
.foot{background:var(--paper-band);padding:72px 0 32px;}
.foot__inner{max-width:1440px;margin:0 auto;padding:0 var(--pad);}
.foot__top{display:grid;grid-template-columns:1fr auto;gap:80px;margin-bottom:56px;}
.foot__brand{display:flex;flex-direction:column;gap:18px;max-width:420px;}
.foot__logo{display:flex;align-items:center;gap:12px;}
.foot__logo svg{width:28px;height:28px;flex:none;}
.foot__name{font-family:var(--font-display);font-size:18px;font-weight:700;letter-spacing:.04em;}
.foot__tagline{font-size:13px;line-height:1.85;color:var(--grey);white-space:pre-line;}
.foot__wordmark{
  font-family:var(--font-display);font-size:clamp(64px,9vw,96px);font-weight:700;
  line-height:.9;color:rgba(30,27,22,.1);letter-spacing:.01em;margin-top:8px;
  user-select:none;
}
.foot__nav{display:flex;gap:64px;}
.foot__col{display:flex;flex-direction:column;gap:12px;}
.foot__col h4{font-size:13px;font-weight:500;color:var(--ink);margin-bottom:2px;}
.foot__col a{font-size:13px;color:var(--grey-dark);transition:color .25s;}
.foot__col a:hover{color:var(--brick);}
.foot__bottom{
  display:flex;justify-content:space-between;align-items:center;gap:24px;
  padding-top:28px;border-top:1px solid rgba(30,27,22,.12);
  font-size:12px;color:var(--grey-dark);flex-wrap:wrap;
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  :root{--pad:48px;}
  .hero{grid-template-columns:1fr 460px;gap:48px;}
  .cap__grid{grid-template-columns:repeat(2,1fr);}
  .about{grid-template-columns:1fr 420px;gap:56px;}
  .contact__inner{grid-template-columns:1fr 440px;gap:48px;}
}
@media (max-width:900px){
  :root{--pad:32px;}
  .nav__menu{
    position:absolute;top:88px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(240,131,0,.98);backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line-light);
    max-height:0;overflow:hidden;transition:max-height .4s ease;
  }
  .nav.open .nav__menu{max-height:360px;}
  .nav__link{padding:18px var(--pad);border-bottom:1px solid var(--line-light);}
  .nav__link::after{display:none;}
  .nav__menu .btn{margin:18px var(--pad);justify-content:center;}
  .nav__burger{display:flex;}
  .hero{grid-template-columns:1fr;padding-top:64px;padding-bottom:64px;}
  .visual{order:-1;max-width:520px;}
  .cap__grid{grid-template-columns:1fr;}
  .prod__grid{grid-template-columns:1fr;}
  .cases__grid{grid-template-columns:1fr;}
  .about{grid-template-columns:1fr;gap:48px;}
  .contact__inner{grid-template-columns:1fr;gap:40px;}
  .sec-head{flex-direction:column;align-items:flex-start;}
  .sec-head__desc{text-align:left;max-width:100%;}
  .foot__top{grid-template-columns:1fr;gap:40px;}
  .foot__nav{gap:48px;}
}
@media (max-width:600px){
  :root{--pad:20px;}
  .nav__inner{height:72px;}
  .nav__menu{top:72px;}
  .brand__en{font-size:21px;}
  .sec-title{font-size:30px;}
  .hero h1{font-size:34px;}
  .hero__desc{font-size:15px;}
  .btn--lg{padding:15px 24px;font-size:15px;}
  .hero__actions{width:100%;}
  .hero__actions .btn{flex:1;}
  .cap,.cases{padding-top:64px;padding-bottom:64px;}
  .prod,.contact{padding:64px 0;}
  .about{padding:64px var(--pad);}
  .stats{grid-template-columns:1fr;}
  .stat:nth-child(odd){padding-right:0;border-right:none;}
  .stat:nth-child(even){padding-left:0;}
  .form{padding:24px;}
  .foot__nav{flex-direction:column;gap:32px;}
  .pcard--dark .pcard__name{font-size:24px;}
}

/* ---------- 案例分类与项目页 ---------- */
.crumb{display:flex;align-items:center;gap:10px;font-family:var(--font-body);font-size:15px;color:var(--grey-dark);padding:26px 0 0;}
.crumb a{color:var(--grey);transition:color .2s;}
.crumb a:hover{color:var(--brick);}
.crumb i{font-style:normal;color:rgba(30,27,22,.35);}
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px;}
.cat-card{position:relative;overflow:hidden;aspect-ratio:4/3;background:#1E1B16;border:1px solid var(--line-light);display:block;transition:transform .4s cubic-bezier(.16,1,.3,1),box-shadow .4s;}
.cat-card:hover{transform:translateY(-5px);box-shadow:0 26px 52px -14px rgba(30,27,22,.3);}
.cat-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.94;transition:transform .6s cubic-bezier(.16,1,.3,1),opacity .4s;}
.cat-card:hover img{transform:scale(1.06);opacity:.85;}
.cat-card::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(12,10,8,.78) 0%,rgba(12,10,8,.12) 55%,rgba(12,10,8,0) 100%);}
.cat-card__body{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:22px 22px 24px;color:#F5F1E8;}
.cat-card__no{font-family:ui-monospace,monospace;font-size:11px;letter-spacing:.1em;color:#F0A24A;}
.cat-card__name{font-size:26px;font-weight:700;margin-top:6px;line-height:1.35;letter-spacing:.04em;}
.cat-card__count{font-size:12px;color:rgba(245,241,232,.72);margin-top:5px;font-family:ui-monospace,monospace;}
.cat-card__arrow{position:absolute;right:20px;bottom:24px;z-index:2;width:36px;height:36px;border:1px solid rgba(255,255,255,.4);display:flex;align-items:center;justify-content:center;color:#F5F1E8;font-size:18px;transition:background .25s,color .25s;}
.cat-card:hover .cat-card__arrow{background:#E07B00;border-color:#E07B00;color:#fff;}
@media (max-width:1024px){.cat-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.cat-grid{grid-template-columns:1fr;}.cat-card{aspect-ratio:16/9;}}

.project-hero{position:relative;aspect-ratio:1108/430;overflow:hidden;background:#1E1B16;margin-top:34px;}
.project-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.project-wrap{display:grid;grid-template-columns:1fr 320px;gap:64px;padding:56px 0 90px;align-items:start;}
.project-body h1{font-size:34px;font-weight:700;line-height:1.35;letter-spacing:-.01em;}
.project-body .lead{font-size:16px;line-height:1.9;color:var(--grey);margin-top:18px;}
.project-body p{font-size:15px;line-height:1.92;color:#3A362F;margin-top:18px;}
.project-body h3{font-size:19px;font-weight:700;margin-top:40px;}
.pmeta{background:#FDFBF5;border:1px solid var(--line-light);padding:28px;position:sticky;top:110px;display:flex;flex-direction:column;gap:16px;}
.pmeta__row{display:flex;justify-content:space-between;gap:14px;font-size:13.5px;padding-bottom:12px;border-bottom:1px solid var(--line-light);}
.pmeta__row:last-of-type{border-bottom:none;padding-bottom:0;}
.pmeta__row b{font-weight:500;color:var(--grey-dark);flex:none;}
.pmeta__row span{color:var(--ink);text-align:right;}
.pmeta .btn{width:100%;}
.pgallery{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:44px;}
.pgallery a{position:relative;overflow:hidden;aspect-ratio:4/3;display:block;background:#1E1B16;}
.pgallery img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.16,1,.3,1);}
.pgallery a:hover img{transform:scale(1.05);}
.pgallery a.pgwide{grid-column:1/-1;aspect-ratio:1108/380;}
@media (max-width:900px){.project-wrap{grid-template-columns:1fr;gap:36px;}.pmeta{position:static;}}

/* 分类卡文字对齐：标题统一两行高度，按钮沉底 */
.kcase__name{min-height:56px;}
.kcase__body > div{margin-top:auto;padding-top:6px;}


/* ---------- 首屏 VCR 背景 ---------- */
.hero__video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;}
@media (prefers-reduced-motion:reduce){
  .hero__video{display:none;}
}

/* ---------- 企业影片 ---------- */
.film{padding:96px 0 0;max-width:1440px;margin:0 auto;padding-left:var(--pad);padding-right:var(--pad);}
.film__frame{position:relative;margin-top:36px;background:#14110D;border:1px solid rgba(30,27,22,.2);box-shadow:0 30px 70px -24px rgba(30,27,22,.4);}
.film__frame video{display:block;width:100%;height:auto;aspect-ratio:16/9;background:#14110D;}
.film__cap{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:16px 20px;background:#FDFBF5;border-top:1px solid rgba(30,27,22,.12);font-size:12.5px;color:var(--grey);}
.film__cap b{font-weight:600;color:var(--ink);}
.film__cap span{font-family:ui-monospace,monospace;letter-spacing:.06em;color:var(--grey-dark);}
@media (max-width:640px){.film{padding-top:64px;}.film__cap{flex-direction:column;align-items:flex-start;gap:6px;}}

/* ===========================================================
   LIGHT SKIN · 米白皮肤（首屏遮罩保持通透，让 Logo 视频透出）
   =========================================================== */
.hero::after{
  background:rgba(240,131,0,.14);
}

/* ===========================================================
   SKIN · 视频驱动皮肤（银灰基底，色相/浓度由 assets/skin.js 实时写入）
   =========================================================== */
:root{
  --paper:#FBEEDA;
  --paper-band:#FBEEDA;
  --card:#FFFDF8;
  --card-soft:#FEFAF2;
  --veil-rgb:251,238,218;
  --ink:#1B2126;
  --ink-deep:#12171B;
  --paper-line:#22282D;
  --white:#FBFCFC;
  --grey:#5A6268;
  --grey-dark:#868E94;
  --line-light:rgba(27,33,38,.12);
  --line-strong:rgba(27,33,38,.24);
}
body{
  background:#FBEEDA;
  color:var(--ink);
}

/* 导航 */
.nav{background:#F08300;border-bottom:1px solid rgba(255,255,255,.25);transition:background .8s linear;}
.nav__link{color:#fff;}
.nav__link:hover{color:#FFE3BF;}
.brand__cn{color:rgba(255,255,255,.92);}

/* 首屏：随视频变色的薄雾遮罩，保留通透感；右侧透出品牌橙，避免大面留白 */
.hero{background:var(--paper);}
.hero::after{
  background:linear-gradient(to right, rgba(253,246,234,.95) 0%, rgba(253,246,234,.80) 48%, rgba(253,246,234,.38) 100%);
  transition:background .8s linear;
}
.hero__desc{color:#4A3312;}
.hero__trust{color:#6B4E1E;}
.badge{border:none;background:transparent;color:#3A2A10;}
.hero__rule{background:rgba(27,33,38,.14);}
.btn--ghost{background:rgba(255,255,255,.9);border:1px solid rgba(120,70,0,.45);color:#7A4A00;}
.btn--ghost:hover{background:#fff;border-color:rgba(120,70,0,.5);}
.hero__rule{background:rgba(90,55,0,.30);}

/* 分区背景与卡片 */
.prod{background:var(--paper-band);color:var(--ink);transition:background-color .8s linear;}
.prod .sec-title{color:var(--ink);}
.prod .sec-head__desc{color:#5F676D;}
.cap__card{background:var(--card-soft);border:1px solid var(--line-light);}
.cap__card:hover{background:var(--card);border-color:var(--line-strong);}
.cap__card--hl{background:linear-gradient(180deg,rgba(224,123,0,.06) 0%,var(--card-soft) 100%);border-color:rgba(224,123,0,.32);}
.cap__text{color:#5F676D;}
.cap__topline{background:var(--line-light);}
.pcard{background:var(--card);border:1px solid var(--line-light);transition:box-shadow .4s,transform .4s,background-color .8s linear;}
.pcard:hover{box-shadow:0 24px 48px -18px rgba(27,33,38,.22);}
.pcard__text{color:#5F676D;}
.pcard__note{color:#7C848A;}
.tag{background:rgba(27,33,38,.06);color:#434B51;}
.kcase{background:var(--card);border:1px solid var(--line-light);transition:transform .4s,border-color .4s,background-color .8s linear;}
.kcase__text{color:#5F676D;}
.cases{background:var(--paper);transition:background-color .8s linear;}

/* 关于 / 联系 */
.about__body{color:#525A60;}
.about__rule{background:var(--line-light);}
.fact{color:#525A60;}
.stat{border-bottom:1px solid var(--line-light);}
.stat:nth-child(odd){border-right:1px solid var(--line-light);}
.contact{background:var(--paper-band);color:var(--ink);transition:background-color .8s linear;}
.contact__item{color:#434B51;}
.contact__item b{color:#868E94;}
.contact__desc{color:#525A60;}
.form{background:var(--card);border:1px solid var(--line-light);box-shadow:0 18px 44px -14px rgba(27,33,38,.18);transition:background-color .8s linear;}
.form__sub,.form__note{color:#7C848A;}
.field{background:#fff;border:1px solid rgba(27,33,38,.16);color:var(--ink);}
.field::placeholder{color:#9AA2A8;}
.field:focus{background:#fff;border-color:#2B3A4A;}

/* 面包屑 / 项目页 / 影片 */
.crumb{color:#868E94;}
.crumb a{color:#525A60;}
.crumb i{color:rgba(27,33,38,.3);}
.pmeta{background:var(--card-soft);border:1px solid var(--line-light);transition:background-color .8s linear;}
.pmeta__row{border-bottom:1px solid var(--line-light);}
.pmeta__row b{color:#868E94;}
.project-body p{color:#4E565C;}
.project-body .lead{color:#4E565C;}
.film__cap{background:var(--card-soft);border-top:1px solid var(--line-light);color:#5F676D;}

/* 图像占位与图注 */
.duo__pane--wide{background:#E8EBEC;}
.pgallery figcaption,.pgwide figcaption{color:#7C848A;}

/* 产品卡统一排版：图区比例一致 + 文字区贴底对齐 */
.duo__pane--wide{aspect-ratio:618/240;background:#FCFCFB;}
.duo__pane--wide img{object-fit:contain;}
.pcard__body{flex:1;}
.pcard__tags{margin-top:auto;}

/* 爆炸图填满图区窗口 */
.duo__pane--wide img{object-fit:cover;object-position:center 45%;}

/* 图区加高至原图比例，爆炸图完整显示；四卡仍统一 */
.duo__pane--wide{aspect-ratio:1108/640;background:#FCFCFB;}
.duo__pane--wide img{object-fit:contain;object-position:center;}
.pcard__media{aspect-ratio:1108/640;}

/* P-04 深色卡修复：优先级高于银色主题的 .pcard 背景，top 高度与其他卡图区一致 */
.pcard.pcard--dark{background:var(--paper-line);border-color:var(--paper-line);}
.pcard--dark .pcard__top{aspect-ratio:1108/640;}

/* P-01 爆炸图：网页标签替代图内小字（可放大、始终清晰） */
.callout-list{position:absolute;left:14px;top:14px;bottom:14px;z-index:3;display:flex;flex-direction:column;justify-content:space-between;gap:10px;width:min(52%,250px);}
.callout{background:rgba(252,253,253,.95);border:1px solid;border-left-width:3px;border-radius:8px;padding:9px 12px;display:flex;flex-direction:column;gap:3px;backdrop-filter:blur(4px);box-shadow:0 2px 8px rgba(18,23,27,.08);}
.callout b{font-size:14.5px;line-height:1.3;}
.callout span{font-size:12px;line-height:1.45;color:#5F676D;}
.callout--blue{border-color:#4E8FD0;} .callout--blue b{color:#2F6FAD;}
.callout--orange{border-color:#E09B4A;} .callout--orange b{color:#B56F1E;}
.callout--green{border-color:#57A773;} .callout--green b{color:#357A50;}
.callout--purple{border-color:#9D8FD0;} .callout--purple b{color:#6E5CB0;}
.callout-list{width:min(46%,235px);}

/* 详情页 4×4 实拍图墙（每列 4 张、同尺寸） */
.pgallery--4x4{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;}
.pgallery--4x4 a{display:block;overflow:hidden;aspect-ratio:4/3;}
.pgallery--4x4 img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s;}
.pgallery--4x4 a:hover img{transform:scale(1.05);}
@media (max-width:900px){.pgallery--4x4{grid-template-columns:repeat(2,1fr);}}

/* 详情页 3 列 × 每列 4 张图墙 */
.pgallery--3col{grid-template-columns:repeat(3,1fr);}
@media (max-width:900px){.pgallery--3col{grid-template-columns:repeat(2,1fr);}}

/* 安顺详情页：4 列 × 每列 3 张 */
.pgallery--4col{grid-template-columns:repeat(4,1fr);}
@media (max-width:900px){.pgallery--4col{grid-template-columns:repeat(2,1fr);}}

/* ===========================================================
   医院组织项目卡 · cat-card 同风格覆盖卡（保持原三列排版与卡高）
   =========================================================== */
.kcase--tall{aspect-ratio:404/510;}
.kcase--tall .cat-card__desc{font-size:12.5px;line-height:1.65;color:rgba(245,241,232,.75);margin-top:7px;max-width:94%;}
@media (max-width:560px){.kcase--tall{aspect-ratio:4/3;}}

/* 工程案例网格 · 4 列变体 */
.cases__grid--4{grid-template-columns:repeat(4,1fr);gap:20px;}
@media (max-width:1200px){.cases__grid--4{grid-template-columns:repeat(2,1fr);gap:20px;}}
@media (max-width:600px){.cases__grid--4{grid-template-columns:1fr;}}

/* ===========================================================
   全站页脚 + 页面撑满视口
   =========================================================== */
body{min-height:100vh;display:flex;flex-direction:column;}
main{flex:1 0 auto;}

.site-footer{flex-shrink:0;background:#FBEEDA;border-top:1px solid rgba(120,70,0,.18);color:#5A4318;}
.site-footer a{color:inherit;text-decoration:none;transition:color .25s;}
.site-footer a:hover{color:#C46900;}
.footer__grid{display:grid;grid-template-columns:1.5fr 0.8fr 1.3fr;gap:44px;padding:58px var(--pad) 46px;}
.footer__logo{height:66px;width:auto;display:block;}
.footer__brand p{font-size:15px;line-height:1.8;color:#6B5424;margin-top:16px;max-width:34em;}
.footer__col b{display:block;font-size:16px;color:#3D2E0C;letter-spacing:.06em;margin-bottom:14px;}
.footer__col p,.footer__col a{display:block;font-size:15px;line-height:2;color:#5A4318;}
.footer__bar{border-top:1px solid rgba(120,70,0,.18);}
.footer__bar .wrap{display:flex;justify-content:space-between;gap:12px;padding-top:18px;padding-bottom:18px;font-size:14px;color:#6B5424;flex-wrap:wrap;}
@media (max-width:900px){
  .footer__grid{grid-template-columns:1fr;gap:30px;padding:44px 0 36px;}
}

/* 标语 · 毛笔字体，透明融入页面（大标题保持原版黑体） */
@font-face{
  font-family:'AoriseBrush';
  src:url('fonts/mashanzheng-subset.woff2?v=20261102a') format('woff2');
  font-weight:400;font-style:normal;font-display:swap;
}
.badge{
  padding:6px 0;border:none;background:transparent;
  backdrop-filter:none;-webkit-backdrop-filter:none;
  font-family:'AoriseBrush','STXingkai','华文行楷','Kaiti SC','KaiTi',serif!important;
  font-size:30px;line-height:1.5;letter-spacing:.04em;
}

/* 导航按钮：橙底上白底橙字 */
.nav .btn{background:#fff;color:#C46900;}
.nav .btn:hover{background:#FFE3BF;color:#C46900;}

/* 首屏文字统一左对齐（补偿书法字体字面留白） */
.hero__left .badge{margin-left:-5px;}
.hero__left h1,.hero__left .hero__desc,.hero__left .hero__trust{text-align:left;}
.hero__left .hero__actions{justify-content:flex-start;}

.hero__left .badge{white-space:nowrap;}

/* 导航菜单文字放大 */
.nav .btn{font-size:16px;padding:12px 26px;}

.pcard__media img{width:100%;height:100%;object-fit:cover;}

/* ===========================================================
   品牌 logo · 用户透明底竖排原图（导航 + 页脚直接引用）
   =========================================================== */
.brand{display:block;}
.brand .brand__stack{height:78px;width:auto;display:block;}
@media (max-width:600px){
  .brand .brand__stack{height:58px;}
}
.footer__stack{height:92px;width:auto;display:block;}
@media (max-width:900px){
  .footer__stack{height:76px;}
}

/* 首屏数据行：三个数据块替代纯文字行（数字带滚动动画） */
.hero__stats{display:flex;align-items:stretch;margin-top:4px;}
.hstat{
  display:flex;flex-direction:column;gap:4px;
  padding-right:40px;margin-right:40px;
  border-right:1px solid rgba(90,55,0,.22);
}
.hstat:last-child{border-right:none;margin-right:0;padding-right:0;}
.hstat b{
  font-family:var(--font-display);font-size:32px;font-weight:700;
  color:var(--brick);line-height:1.1;
}
.hstat span{font-size:13px;color:#6B4E1E;letter-spacing:.02em;}
@media (max-width:600px){
  .hero__stats{flex-wrap:wrap;gap:18px;}
  .hstat{padding-right:24px;margin-right:24px;}
  .hstat b{font-size:26px;}
  .hero__left .badge{white-space:normal;font-size:21px;line-height:1.6;}
}

/* 首页联系区按钮组 */
.contact__actions{display:flex;flex-direction:column;gap:12px;}
.contact__actions .btn{width:100%;}