/* =========================================================
   南京泰宇数控设备制造有限公司 · 首页
   深色工业风 / 整页翻滚 / 一页一个产品
   ========================================================= */

:root{
  --bg:#08090b;
  --bg-2:#0d1014;
  --panel:#12161d;
  --panel-2:#171c25;
  --line:rgba(255,255,255,.09);
  --line-soft:rgba(255,255,255,.05);
  --txt:#e9edf2;
  --txt-dim:#98a3af;
  --txt-faint:#5d6672;
  --accent:#ff8a1e;
  --accent-2:#ffc247;
  --accent-soft:rgba(255,138,30,.14);
  --accent-glow:rgba(255,138,30,.34);
  --f-disp:'Saira Condensed','Bahnschrift','Arial Narrow',sans-serif;
  --f-mono:'Chakra Petch','Bahnschrift','Consolas',monospace;
  --f-cn:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --hd-h:78px;
  --ease:cubic-bezier(.76,0,.24,1);
}

*,*::before,*::after{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:var(--bg);
  color:var(--txt);
  font-family:var(--f-cn);
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
html,body{height:100%;}
body{overflow:hidden;}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;}
ul{margin:0;padding:0;list-style:none;}

.wrap{width:100%;max-width:1320px;margin:0 auto;padding:0 56px;}

/* ---------- 预载 ---------- */
.loader{
  position:fixed;inset:0;z-index:200;background:var(--bg);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:34px;
  transition:opacity .7s ease,visibility .7s ease;
}
.loader.is-done{opacity:0;visibility:hidden;}
.loader__brand{display:flex;flex-direction:column;align-items:center;gap:6px;color:var(--accent);}
.loader__mark{width:54px;height:54px;}
.loader__cn{font-size:22px;letter-spacing:.34em;color:var(--txt);font-weight:700;}
.loader__en{font-family:var(--f-disp);font-size:12px;letter-spacing:.5em;color:var(--txt-faint);}
.loader__bar{width:180px;height:2px;background:var(--line);overflow:hidden;}
.loader__bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width .3s ease;}

/* ---------- 顶栏 ---------- */
.hd{
  position:fixed;top:0;left:0;right:0;height:var(--hd-h);z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 40px;gap:24px;
  border-bottom:1px solid transparent;
  transition:background .45s ease,border-color .45s ease,backdrop-filter .45s ease;
}
.hd.is-solid{
  background:rgba(8,9,11,.82);
  backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.brand{display:flex;align-items:center;gap:12px;color:var(--accent);}
.brand__mark{width:34px;height:34px;flex:0 0 34px;}
.brand__txt{display:flex;flex-direction:column;line-height:1.05;}
.brand__txt b{font-size:19px;letter-spacing:.16em;color:var(--txt);font-weight:700;}
.brand__txt i{font-family:var(--f-disp);font-style:normal;font-size:11px;letter-spacing:.42em;color:var(--txt-faint);}

.nav{display:flex;align-items:center;gap:4px;}
.nav > a,.nav__item > a{
  position:relative;display:block;padding:10px 18px;font-size:15px;color:var(--txt-dim);
  letter-spacing:.06em;transition:color .3s ease;
}
.nav > a::after,.nav__item > a::after{
  content:"";position:absolute;left:18px;right:18px;bottom:4px;height:2px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease);
}
.nav > a:hover,.nav__item > a:hover,.nav > a.is-on,.nav__item > a.is-on{color:var(--txt);}
.nav > a:hover::after,.nav__item > a:hover::after,.nav > a.is-on::after,.nav__item > a.is-on::after{transform:scaleX(1);}
.caret{display:inline-block;width:5px;height:5px;margin-left:7px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translateY(-2px);}

.nav__item{position:relative;}
.sub{
  position:absolute;top:calc(100% + 6px);left:50%;transform:translate(-50%,8px);
  min-width:186px;background:rgba(13,16,20,.97);border:1px solid var(--line);
  padding:8px;display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transition:all .3s var(--ease);
  box-shadow:0 24px 50px rgba(0,0,0,.55);
}
.sub::before{content:"";position:absolute;top:-6px;left:0;right:0;height:6px;}
.nav__item:hover .sub{opacity:1;visibility:visible;transform:translate(-50%,0);}
.sub a{padding:10px 14px;font-size:14px;color:var(--txt-dim);border-left:2px solid transparent;transition:all .25s ease;}
.sub a:hover{color:var(--txt);background:var(--accent-soft);border-left-color:var(--accent);}
.sub__all{display:flex!important;justify-content:space-between;align-items:center;color:var(--accent)!important;margin-top:4px;border-top:1px solid var(--line-soft);}

.hd__tel{display:flex;align-items:center;gap:10px;}
.hd__tel svg{width:34px;height:34px;padding:8px;background:linear-gradient(135deg,var(--accent),#ff6a00);color:#0a0a0a;border-radius:3px;}
.hd__tel span{display:flex;flex-direction:column;line-height:1.2;}
.hd__tel i{font-style:normal;font-size:11px;letter-spacing:.14em;color:var(--txt-faint);}
.hd__tel b{font-family:var(--f-disp);font-size:18px;letter-spacing:.06em;color:var(--txt);}

/* 移动端菜单按钮与面板（桌面端隐藏） */
.hd__menu{
  display:none;width:42px;height:42px;padding:0;flex-direction:column;
  align-items:center;justify-content:center;gap:4px;
  border:1px solid var(--line);background:transparent;cursor:pointer;
}
.hd__menu i{display:block;width:18px;height:2px;background:var(--txt);transition:transform .3s var(--ease),opacity .3s ease;}
.hd__menu.is-open i:nth-child(1){transform:translateY(6px) rotate(45deg);}
.hd__menu.is-open i:nth-child(2){opacity:0;}
.hd__menu.is-open i:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mnav{display:none;}

/* ---------- 整屏翻滚 ---------- */
.fp{
  position:relative;width:100%;
  transition:transform 1s var(--ease);
  will-change:transform;
}
.screen{
  position:relative;height:100vh;height:100svh;
  display:flex;align-items:center;overflow:hidden;
}
.grid-overlay{
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:78px 78px;
  -webkit-mask-image:radial-gradient(circle at 50% 45%,#000 20%,transparent 78%);
  mask-image:radial-gradient(circle at 50% 45%,#000 20%,transparent 78%);
}

/* 入场动画 */
[data-anim]{opacity:0;transform:translateY(34px);transition:opacity .9s var(--ease),transform .9s var(--ease);}
.screen.is-active [data-anim]{opacity:1;transform:none;}
.screen.is-active [data-anim]:nth-child(1){transition-delay:.16s;}
.screen.is-active [data-anim]:nth-child(2){transition-delay:.26s;}
.screen.is-active [data-anim]:nth-child(3){transition-delay:.36s;}
.screen.is-active [data-anim]:nth-child(4){transition-delay:.46s;}
.screen.is-active [data-anim]:nth-child(5){transition-delay:.56s;}
.screen.is-active [data-anim]:nth-child(6){transition-delay:.66s;}

/* ---------- 通用排版 ---------- */
.eyebrow{
  font-family:var(--f-mono);font-size:12px;letter-spacing:.34em;color:var(--accent);
  margin:0 0 22px;
}
.idx{display:flex;align-items:baseline;gap:12px;margin:0 0 20px;font-family:var(--f-disp);}
.idx b{font-size:34px;line-height:1;color:var(--accent);letter-spacing:.04em;}
.idx span{font-size:13px;letter-spacing:.24em;color:var(--txt-faint);font-family:var(--f-cn);}
.h2{
  font-family:var(--f-disp);font-weight:800;line-height:.98;letter-spacing:.02em;
  font-size:clamp(42px,5.4vw,80px);margin:0 0 26px;text-transform:uppercase;
}
.h2 em{font-style:normal;color:var(--accent);}
.lead{font-size:16px;line-height:1.95;color:var(--txt-dim);margin:0 0 16px;max-width:38em;}
.lead--dim{color:var(--txt-faint);font-size:15px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:0 34px;height:52px;font-size:15px;letter-spacing:.1em;font-weight:500;
  border:1px solid transparent;cursor:pointer;transition:all .35s var(--ease);position:relative;overflow:hidden;
}
.btn--solid{background:linear-gradient(135deg,var(--accent),#ff6a00);color:#0b0b0b;font-weight:700;}
.btn--solid:hover{box-shadow:0 0 34px var(--accent-glow);transform:translateY(-2px);}
.btn--ghost{border-color:rgba(255,255,255,.28);color:var(--txt);}
.btn--ghost:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft);}

/* ---------- 01 首页 ---------- */
.s-hero{align-items:center;}
.s-hero__bg{
  position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(8,9,11,.86) 0%,rgba(8,9,11,.66) 42%,rgba(8,9,11,.94) 100%),
    url("https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=dark%20industrial%20CNC%20machine%20tool%20workshop%2C%20large%20precision%20lathe%20machining%20center%2C%20amber%20rim%20lighting%2C%20near%20black%20background%2C%20cinematic%20product%20photography%2C%20sparks%2C%20high%20detail&image_size=landscape_16_9") center/cover no-repeat;
  transform:scale(1.06);filter:saturate(.9);
}
.s-hero__glow{
  position:absolute;left:-6%;top:50%;transform:translateY(-50%);
  width:62vw;height:62vw;max-width:900px;max-height:900px;
  background:radial-gradient(circle,var(--accent-glow) 0%,rgba(255,138,30,.06) 38%,transparent 66%);
  pointer-events:none;
}
.s-hero__inner{position:relative;z-index:2;padding-top:var(--hd-h);}
.hero__title{margin:0 0 24px;display:flex;flex-direction:column;}
.hero__cn{
  font-size:clamp(60px,10vw,148px);line-height:.92;font-weight:900;letter-spacing:.02em;
  background:linear-gradient(150deg,#fff 24%,#ffd9a8 62%,var(--accent) 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.hero__en{
  font-family:var(--f-disp);font-size:clamp(30px,5vw,74px);line-height:1;font-weight:700;
  letter-spacing:.16em;color:transparent;-webkit-text-stroke:1.4px rgba(255,255,255,.26);
  margin-top:6px;
}
.hero__sub{font-size:clamp(15px,1.35vw,19px);line-height:1.85;color:var(--txt-dim);max-width:46em;margin:0 0 40px;}
.hero__btns{display:flex;gap:16px;flex-wrap:wrap;}
.hero__meta{display:flex;gap:56px;margin-top:66px;flex-wrap:wrap;}
.hero__meta li{display:flex;flex-direction:column;gap:6px;position:relative;padding-left:18px;}
.hero__meta li::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:2px;background:linear-gradient(180deg,var(--accent),transparent);}
.hero__meta b{font-family:var(--f-disp);font-size:30px;line-height:1;color:#fff;letter-spacing:.03em;}
.hero__meta span{font-size:13px;letter-spacing:.2em;color:var(--txt-faint);}

.hero__side{
  position:absolute;right:64px;top:50%;transform:translateY(-50%) rotate(90deg);
  transform-origin:center;font-family:var(--f-mono);font-size:11px;letter-spacing:.5em;
  color:var(--txt-faint);white-space:nowrap;
}
.scroll-hint{
  position:absolute;left:56px;bottom:38px;z-index:3;
  display:flex;flex-direction:column;align-items:flex-start;gap:12px;
}
.scroll-hint span{font-family:var(--f-mono);font-size:11px;letter-spacing:.42em;color:var(--txt-faint);}
.scroll-hint i{position:relative;display:block;width:1px;height:56px;background:var(--line);overflow:hidden;}
.scroll-hint i::after{content:"";position:absolute;left:0;top:-50%;width:1px;height:50%;background:var(--accent);animation:drop 1.9s var(--ease) infinite;}
@keyframes drop{0%{top:-50%}100%{top:100%}}

/* ---------- 02 走进泰宇 ---------- */
.s-about__inner{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:center;padding-top:var(--hd-h);}
.adv{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);margin-top:34px;border:1px solid var(--line);}
.adv__i{background:var(--bg-2);padding:22px 24px;transition:background .35s ease;}
.adv__i:hover{background:var(--panel);}
.adv__i b{display:block;font-size:16px;color:var(--accent);margin-bottom:8px;letter-spacing:.06em;}
.adv__i span{font-size:13px;line-height:1.75;color:var(--txt-dim);}
.s-about__media{position:relative;margin:0;}
.s-about__media img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;filter:grayscale(.25) contrast(1.05);}
.s-about__media::after{
  content:"";position:absolute;inset:0;border:1px solid var(--line);pointer-events:none;
  box-shadow:inset 0 0 90px rgba(0,0,0,.6);
}
.s-about__media::before{
  content:"";position:absolute;left:-14px;top:-14px;width:74px;height:74px;
  border-left:2px solid var(--accent);border-top:2px solid var(--accent);z-index:2;
}
.s-about__media figcaption{
  position:absolute;left:0;bottom:-1px;padding:10px 18px;background:var(--accent);color:#0b0b0b;
  font-size:12px;letter-spacing:.14em;font-weight:700;
}

/* ---------- 04 产品中心（单屏 · 分类切换） ---------- */
.s-prods{padding-top:var(--hd-h);}
.s-prods__inner{position:relative;z-index:2;}
.s-prods .sec-head{margin-bottom:24px;}
.prod-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:22px;}
.prod-tabs{display:flex;flex-wrap:wrap;gap:8px;}
.prod-tab{
  position:relative;display:inline-flex;align-items:center;gap:9px;height:42px;padding:0 18px;
  border:1px solid var(--line);background:rgba(13,16,20,.55);color:var(--txt-dim);
  font-family:var(--f-cn);font-size:14px;letter-spacing:.08em;cursor:pointer;
  transition:color .3s ease,border-color .3s ease,background .3s ease;
}
.prod-tab em{font-style:normal;font-family:var(--f-mono);font-size:11px;letter-spacing:.06em;color:var(--txt-faint);transition:color .3s ease;}
.prod-tab:hover{color:var(--txt);border-color:rgba(255,255,255,.26);}
.prod-tab.is-on{color:var(--accent);border-color:rgba(255,138,30,.55);background:var(--accent-soft);}
.prod-tab.is-on em{color:var(--accent);}
.prod-tab.is-on::before{content:"";position:absolute;left:-1px;top:-1px;bottom:-1px;width:2px;background:var(--accent);}
.prod-more{
  display:inline-flex;align-items:center;gap:12px;height:42px;padding:0 20px;
  border:1px solid var(--line);font-size:14px;letter-spacing:.12em;color:var(--txt);
  transition:color .3s ease,border-color .3s ease,background .3s ease;
}
.prod-more i{font-style:normal;font-family:var(--f-mono);color:var(--accent);transition:transform .35s var(--ease);}
.prod-more:hover{color:var(--accent);border-color:rgba(255,138,30,.55);background:var(--accent-soft);}
.prod-more:hover i{transform:translateX(5px);}

.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.prod-card{
  position:relative;display:flex;flex-direction:column;border:1px solid var(--line);
  background:var(--bg-2);overflow:hidden;
  transition:border-color .4s ease,background .4s ease,transform .4s var(--ease),box-shadow .4s ease;
  animation:cardIn .7s var(--ease) both;animation-delay:calc(var(--i,0) * 70ms);
}
@keyframes cardIn{from{opacity:0;transform:translateY(22px);}to{opacity:1;transform:none;}}
.prod-card:hover{border-color:rgba(255,138,30,.5);background:var(--panel);transform:translateY(-5px);box-shadow:0 26px 54px rgba(0,0,0,.5);}
.prod-card__media{position:relative;overflow:hidden;aspect-ratio:4/3;background:linear-gradient(150deg,#151a22,#0b0e12 62%);}
.prod-card__media img{
  width:100%;height:100%;object-fit:cover;
  filter:grayscale(.3) brightness(.8);
  transition:transform .8s var(--ease),filter .8s var(--ease);
}
.prod-card:hover .prod-card__media img{transform:scale(1.06);filter:grayscale(0) brightness(.98);}
.prod-card__media::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(180deg,rgba(8,9,11,0) 42%,rgba(8,9,11,.78));}
.prod-card__no{
  position:absolute;left:12px;top:8px;z-index:2;font-family:var(--f-disp);font-weight:800;
  font-size:28px;line-height:1;color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.42);
}
.prod-card__go{
  position:absolute;left:0;right:0;bottom:0;z-index:2;display:flex;align-items:center;justify-content:space-between;
  padding:11px 14px;font-size:12px;letter-spacing:.14em;color:#fff;
  border-top:1px solid rgba(255,138,30,.4);background:rgba(255,138,30,.14);backdrop-filter:blur(6px);
  transform:translateY(100%);opacity:0;transition:transform .45s var(--ease),opacity .35s ease;
}
.prod-card__go i{font-style:normal;font-family:var(--f-mono);color:var(--accent);}
.prod-card:hover .prod-card__go{transform:none;opacity:1;}
.prod-card__body{display:flex;flex-direction:column;flex:1;padding:14px 16px 0;}
.prod-card__cat{font-family:var(--f-mono);font-size:10px;letter-spacing:.22em;color:var(--accent);margin-bottom:6px;}
.prod-card__name{
  font-family:var(--f-disp);font-weight:700;font-size:clamp(22px,1.9vw,29px);line-height:1;
  letter-spacing:.02em;color:#fff;text-transform:uppercase;margin:0 0 14px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.prod-card__specs{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);margin-top:auto;}
.prod-card__specs li{min-width:0;padding:9px 0 11px;}
.prod-card__specs li + li{border-left:1px solid var(--line);padding-left:12px;}
.prod-card__specs b{
  display:block;font-size:10px;font-weight:400;letter-spacing:.1em;color:var(--txt-faint);
  margin-bottom:5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.prod-card__specs span{
  display:block;font-family:var(--f-disp);font-size:15px;letter-spacing:.01em;color:var(--txt-dim);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.prod-card:hover .prod-card__specs span{color:var(--txt);}
.prod-foot{margin:18px 0 0;font-family:var(--f-mono);font-size:11px;letter-spacing:.18em;color:var(--txt-faint);}

/* ---------- 项目案例 ---------- */
.sec-head{margin-bottom:44px;}
.sec-head .h2{margin-bottom:0;display:flex;align-items:baseline;gap:20px;flex-wrap:wrap;}
.sec-head .h2 em{font-size:.44em;letter-spacing:.22em;color:var(--txt-faint);font-weight:600;}
.sec-sub{margin:14px 0 0;font-size:14px;line-height:1.9;letter-spacing:.08em;color:var(--txt-dim);}
/* 内容型栏目屏：为固定顶栏预留高度，避免标题被顶栏遮挡 */
.s-cases,.s-news,.s-config,.s-prin{padding-top:var(--hd-h);}
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.case{position:relative;overflow:hidden;border:1px solid var(--line);background:linear-gradient(150deg,#151a22,#0b0e12 62%);}
.case img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;filter:grayscale(.35) brightness(.72);transition:all .7s var(--ease);}
.case:hover img{filter:grayscale(0) brightness(.92);transform:scale(1.05);}
.case__t{position:absolute;left:0;right:0;bottom:0;padding:22px;background:linear-gradient(180deg,transparent,rgba(8,9,11,.94));}
.case__t b{display:block;font-size:19px;color:#fff;margin-bottom:6px;}
.case__t span{font-size:13px;color:var(--txt-dim);}
.case__n{position:absolute;right:16px;top:12px;font-family:var(--f-disp);font-size:38px;color:rgba(255,255,255,.16);}

/* ---------- 新闻 ---------- */
.news{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;}
.news__col h3{
  display:flex;align-items:center;gap:14px;font-size:15px;letter-spacing:.2em;font-weight:500;
  color:var(--txt);margin:0 0 22px;padding-bottom:14px;border-bottom:1px solid var(--line);
}
.news__col h3::before{content:"";width:8px;height:8px;background:var(--accent);transform:rotate(45deg);}
.news__col h3 em{font-style:normal;font-family:var(--f-disp);font-size:12px;letter-spacing:.3em;color:var(--txt-faint);margin-left:auto;}
.news__lead{display:block;padding:26px;background:var(--bg-2);border:1px solid var(--line);transition:all .4s var(--ease);}
.news__lead:hover{background:var(--panel);border-color:rgba(255,138,30,.4);}
.news__lead b{display:block;font-size:22px;line-height:1.5;color:#fff;margin-bottom:14px;font-weight:500;}
.news__lead p{font-size:14px;line-height:1.9;color:var(--txt-dim);margin:0 0 16px;}
.news__lead em{font-family:var(--f-mono);font-size:12px;letter-spacing:.16em;color:var(--accent);font-style:normal;}
.news__list li{border-bottom:1px solid var(--line-soft);}
.news__list a{display:flex;align-items:center;gap:18px;padding:16px 4px;transition:all .3s ease;}
.news__list a:hover{padding-left:14px;color:var(--accent);}
.news__list i{font-family:var(--f-disp);font-style:normal;font-size:14px;color:var(--txt-faint);letter-spacing:.1em;}
.news__list b{font-weight:400;font-size:15px;line-height:1.6;color:inherit;}
.news__list a:hover b{color:var(--accent);}

/* ---------- 精益管理 ---------- */
/* 概括性标语标题，与「走进泰宇」同款两行式 */
.s-prin .sec-head .h2{display:block;}
.s-prin .sec-head .h2 em{font-size:1em;letter-spacing:.02em;color:var(--accent);}
.prin{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.prin__i{position:relative;border:1px solid var(--line);background:var(--bg-2);padding:40px 34px 34px;overflow:hidden;transition:background .4s ease,border-color .4s ease;}
.prin__i:hover{background:var(--panel);border-color:rgba(255,138,30,.35);}
.prin__i::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--accent),transparent);}
.prin__no{position:absolute;right:20px;top:10px;font-family:var(--f-disp);font-weight:800;font-size:72px;line-height:1;color:transparent;-webkit-text-stroke:1.3px rgba(255,255,255,.09);}
.prin__i h3{font-size:15px;letter-spacing:.2em;color:var(--txt-dim);font-weight:400;margin:0 0 22px;}
.prin__cn{font-size:clamp(20px,2vw,27px);line-height:1.5;color:var(--accent);margin:0 0 20px;font-weight:500;letter-spacing:.02em;}
.prin__en{font-size:13px;line-height:1.85;color:var(--txt-faint);margin:0;border-top:1px solid var(--line-soft);padding-top:16px;}

/* ---------- 标准配置 / 选配附件 ---------- */
.cfg{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.cfg__i{border:1px solid var(--line);background:var(--bg-2);padding:24px 26px;transition:border-color .4s ease;}
.cfg__i:hover{border-color:rgba(255,138,30,.35);}
.cfg__i header{display:flex;align-items:baseline;gap:12px;padding-bottom:16px;margin-bottom:18px;border-bottom:1px solid var(--line);}
.cfg__i header b{font-family:var(--f-disp);font-size:26px;line-height:1;color:var(--accent);}
.cfg__i header h3{font-size:18px;font-weight:500;color:#fff;margin:0;letter-spacing:.06em;}
.cfg__i header em{font-style:normal;font-family:var(--f-mono);font-size:10px;letter-spacing:.24em;color:var(--txt-faint);margin-left:auto;}
.cfg__i ul{display:flex;flex-wrap:wrap;gap:8px;}
.cfg__i li{border:1px solid var(--line);padding:7px 14px;font-size:13px;color:var(--txt-dim);transition:all .3s ease;}
.cfg__i li:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft);}

/* ---------- 联系我们 ---------- */
.s-contact{align-items:flex-start;flex-direction:column;justify-content:center;}
.s-contact__glow{
  position:absolute;right:-10%;bottom:-24%;width:60vw;height:60vw;max-width:820px;max-height:820px;
  background:radial-gradient(circle,var(--accent-glow) 0%,transparent 66%);pointer-events:none;
}
.s-contact__inner{display:grid;grid-template-columns:1.3fr .7fr;gap:60px;align-items:center;padding-top:var(--hd-h);width:100%;position:relative;z-index:2;}
.tel-big{
  display:block;font-family:var(--f-disp);font-size:clamp(44px,6.4vw,96px);font-weight:800;
  letter-spacing:.04em;line-height:1;color:#fff;margin:6px 0 38px;transition:color .3s ease;
}
.tel-big:hover{color:var(--accent);}
.contact-rows{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);max-width:720px;}
.contact-rows > div{background:var(--bg-2);padding:18px 22px;}
.contact-rows b{display:block;font-size:12px;letter-spacing:.2em;color:var(--txt-faint);margin-bottom:8px;font-weight:400;}
.contact-rows span{font-size:15px;color:var(--txt);letter-spacing:.03em;}
.s-contact__cta{
  border:1px solid var(--line);border-left:2px solid var(--accent);padding:36px 34px;background:var(--bg-2);
}
.s-contact__cta p{font-size:21px;line-height:1.6;color:#fff;margin:0 0 12px;font-weight:500;}
.s-contact__cta > span{display:block;font-size:14px;line-height:1.8;color:var(--txt-dim);margin-bottom:28px;}
.s-contact__cta .btn{width:100%;}
.footer{
  position:absolute;left:0;right:0;bottom:0;border-top:1px solid var(--line);
  background:rgba(8,9,11,.6);
}
.footer__in{display:flex;justify-content:space-between;align-items:center;gap:20px;padding-top:20px;padding-bottom:20px;flex-wrap:wrap;}
.footer p{margin:0;font-size:13px;color:var(--txt-faint);letter-spacing:.04em;}
.footer a{color:var(--txt-faint);border-bottom:1px solid transparent;transition:color .3s ease;}
.footer a:hover{color:var(--accent);}

/* ---------- 右侧圆点 / 进度 ---------- */
.dots{
  position:fixed;right:26px;top:50%;transform:translateY(-50%);z-index:90;
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.dots::before{
  content:"";position:absolute;left:50%;top:-16px;bottom:-16px;width:1px;
  background:rgba(255,255,255,.12);transform:translateX(-50%);z-index:-1;
}
.dot{
  position:relative;width:7px;height:7px;border-radius:4px;background:rgba(255,255,255,.42);
  box-shadow:0 0 0 1px rgba(255,255,255,.16);
  cursor:pointer;transition:all .45s var(--ease);
}
.dot:hover{background:rgba(255,255,255,.85);}
.dot.is-on{height:34px;background:linear-gradient(180deg,var(--accent),var(--accent-2));box-shadow:0 0 16px var(--accent-glow);}
.dot__lb{
  position:absolute;right:22px;top:50%;transform:translateY(-50%) translateX(6px);
  white-space:nowrap;font-size:12px;letter-spacing:.12em;color:var(--txt);
  background:rgba(13,16,20,.96);border:1px solid var(--line);padding:6px 12px;
  opacity:0;visibility:hidden;transition:all .3s ease;pointer-events:none;
}
.dot:hover .dot__lb{opacity:1;visibility:visible;transform:translateY(-50%) translateX(0);}
.side-progress{position:fixed;left:0;top:0;bottom:0;width:2px;background:var(--line-soft);z-index:90;}
.side-progress i{display:block;width:100%;height:0;background:linear-gradient(180deg,var(--accent),var(--accent-2));transition:height .9s var(--ease);}

/* ---------- 矮屏压缩（保证整屏不裁切） ---------- */
@media (max-height:820px) and (min-width:901px){
  .s-hero__inner,.s-about__inner,.s-prods__inner,.s-contact__inner{padding-top:calc(var(--hd-h) + 4px);}
  .hero__sub{margin-bottom:28px;}
  .hero__meta{margin-top:38px;gap:40px;}
  .hero__meta b{font-size:24px;}
  .h2{font-size:clamp(38px,4.4vw,62px);margin-bottom:18px;}
  .lead{font-size:14px;line-height:1.8;margin-bottom:10px;}
  .lead--dim{font-size:13px;}
  .adv{margin-top:20px;}
  .adv__i{padding:13px 18px;}
  .adv__i b{font-size:15px;margin-bottom:5px;}
  .adv__i span{font-size:12px;line-height:1.6;}
  .s-prods .sec-head{margin-bottom:16px;}
  .prod-bar{margin-bottom:14px;}
  .prod-tab{height:36px;padding:0 14px;font-size:13px;}
  .prod-more{height:36px;padding:0 14px;font-size:13px;}
  .prod-card__body{padding:10px 12px 0;}
  .prod-card__name{font-size:21px;margin-bottom:10px;}
  .prod-card__specs li{padding:7px 0 9px;}
  .prod-foot{margin-top:12px;}
  .prin__i{padding:26px 24px 22px;}
  .prin__i h3{margin-bottom:16px;}
  .prin__cn{font-size:19px;margin-bottom:14px;}
  .prin__en{font-size:12px;padding-top:12px;}
  .cfg__i{padding:18px 20px;}
  .cfg__i header{padding-bottom:12px;margin-bottom:14px;}
  .cfg__i li{padding:6px 11px;font-size:12px;}
  .sec-sub{margin-top:10px;font-size:13px;}
  .sec-head{margin-bottom:30px;}
  .case img{aspect-ratio:16/9;}
  .news__lead{padding:20px;}
  .news__lead p{font-size:13px;}
  .news__list a{padding:13px 4px;}
  .tel-big{margin:4px 0 24px;}
  .contact-rows > div{padding:13px 18px;}
  .s-contact__cta{padding:26px 26px;}
  .s-contact__cta p{font-size:18px;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .wrap{padding:0 34px;}
  .s-about__inner{gap:40px;}
  .hero__meta{gap:34px;}
  .prod-grid{gap:16px;}
}
/* 中窄屏：主导航收起为汉堡菜单（否则 7 个栏目在窄屏会挤不下） */
@media (max-width:1200px){
  .nav{display:none;}
  .hd__menu{display:flex;background:rgba(8,9,11,.6);backdrop-filter:blur(8px);}
  .mnav{
    display:block;position:fixed;left:0;right:0;top:var(--hd-h);bottom:0;z-index:99;
    background:rgba(8,9,11,.98);backdrop-filter:blur(16px);
    padding:8px 22px 48px;overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .3s ease,transform .35s var(--ease),visibility .35s ease;
  }
  .mnav.is-open{opacity:1;visibility:visible;transform:none;}
  .mnav a{display:flex;align-items:center;justify-content:space-between;padding:15px 2px;font-size:16px;color:var(--txt-dim);border-bottom:1px solid var(--line-soft);}
  .mnav a:active{color:var(--accent);}
  .mnav a em{font-style:normal;font-family:var(--f-disp);font-size:13px;color:var(--accent);}
  .mnav__sub{padding-left:18px;font-size:15px;}
  .mnav__grp{padding:22px 2px 10px;font-size:12px;letter-spacing:.24em;color:var(--accent);}
}
@media (max-width:900px){
  body{overflow:auto;}
  body.is-locked{overflow:hidden;}
  .fp{transform:none!important;transition:none;}
  /* 移动端无分屏逻辑，直接展示入场内容（否则除首屏外会永久停留在 opacity:0） */
  .screen [data-anim]{opacity:1;transform:none;transition:none;}
  .screen{height:auto;min-height:100vh;padding:calc(var(--hd-h) + 40px) 0 56px;}
  .grid-overlay{background-size:56px 56px;}
  .hd__tel span i{display:none;}
  .hd{padding:0 20px;background:rgba(8,9,11,.92);backdrop-filter:blur(14px);border-bottom-color:var(--line);}
  .hd__tel{gap:0;margin-right:12px;}
  .wrap{padding:0 22px;}
  .prod-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
  .prod-bar{gap:14px;margin-bottom:16px;}
  .prod-tab{height:38px;padding:0 13px;font-size:13px;}
  .prod-more{height:38px;padding:0 14px;font-size:13px;}
  .prod-card__body{padding:11px 12px 0;}
  .prod-card__name{font-size:20px;margin-bottom:11px;}
  .prod-card__specs li{padding:8px 0 10px;}
  .s-about__inner{grid-template-columns:1fr;}
  .adv{grid-template-columns:1fr;}
  .cases{grid-template-columns:1fr;}
  .prin{grid-template-columns:1fr;}
  .cfg{grid-template-columns:1fr;}
  .sec-head .h2{flex-direction:column;align-items:flex-start;gap:6px;}
  .sec-head .h2 em{font-size:.5em;}
  .news{grid-template-columns:1fr;gap:36px;}
  .s-contact__inner{grid-template-columns:1fr;gap:34px;}
  .contact-rows{grid-template-columns:1fr;}
  .dots{display:none;}
  .hero__side{display:none;}
  .scroll-hint{left:22px;bottom:22px;}
  .footer{position:static;margin-top:34px;}
  .s-contact{justify-content:flex-start;padding-bottom:0;}
}
@media (max-width:560px){
  .prod-card__specs{grid-template-columns:1fr;}
  .prod-card__specs li + li{border-left:0;border-top:1px solid var(--line);padding-left:0;}
}