/* ============================================================
   LUHE V2 · 方案 B — DARK KINETIC 暗色动能工业风
   ============================================================ */

:root{
  --bg:#111110;
  --bg2:#1A1A18;
  --ink:#F2EFE9;
  --ink-dim:rgba(242,239,233,.62);
  --ink-faint:rgba(242,239,233,.38);
  --lime:#D9F24F;
  --lime-dim:rgba(217,242,79,.14);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --maxw:1320px;
  --pad:clamp(20px,4vw,48px);
  --font:'Space Grotesk','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

html{scroll-behavior:smooth}
html,body{overflow-x:clip}

body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font);
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

::selection{background:var(--lime);color:#111110}

img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;background:none;border:0;color:inherit}
input,select,textarea{font-family:inherit;font-size:1rem;color:var(--ink)}

:focus-visible{outline:2px solid var(--lime);outline-offset:3px}

.skip-link{
  position:fixed;top:-60px;left:16px;z-index:200;
  background:var(--lime);color:#111110;font-weight:600;font-size:.85rem;
  padding:10px 18px;transition:top .2s ease;
}
.skip-link:focus{top:12px}

/* ---------- 全站细网格线 ---------- */
.site-grid{position:fixed;inset:0;z-index:50;pointer-events:none}
.site-grid-in{
  position:relative;height:100%;max-width:var(--maxw);margin:0 auto;
  border-left:1px solid var(--line);border-right:1px solid var(--line);
}
.site-grid-in i{position:absolute;top:0;bottom:0;width:1px;background:var(--line)}
.site-grid-in i:nth-child(1){left:25%}
.site-grid-in i:nth-child(2){left:50%}
.site-grid-in i:nth-child(3){left:75%}

/* ---------- 布局基件 ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad);position:relative;z-index:1}

.sec{padding:clamp(96px,11vw,168px) 0;position:relative;z-index:1;border-top:1px solid var(--line);scroll-margin-top:72px}
.sec-num{
  position:absolute;top:clamp(28px,4vw,48px);right:var(--pad);
  font-size:clamp(.8rem,1vw,.95rem);font-weight:500;letter-spacing:.18em;
  color:var(--ink-faint);
}
.sec-num::before{content:'/ ';color:var(--lime)}

.sec-head{position:relative;margin-bottom:clamp(48px,6vw,80px)}
.sec-head .sec-num{top:0;right:0}

.badge{
  display:inline-flex;align-items:center;gap:10px;
  font-size:.78rem;font-weight:600;letter-spacing:.22em;text-transform:uppercase;
  color:var(--lime);margin-bottom:24px;
}
.badge-dot{width:8px;height:8px;background:var(--lime);flex:none}

.sec-title{
  font-size:clamp(2.6rem,6vw,5.25rem);
  font-weight:700;line-height:1.02;letter-spacing:-.02em;text-transform:uppercase;
  max-width:16ch;
}
.mask-h{overflow:hidden}
.mask-h>span{display:inline-block}

.sec-sub{
  margin-top:24px;max-width:56ch;
  font-size:clamp(.98rem,1.2vw,1.08rem);color:var(--ink-dim);line-height:1.7;
}

.block-title{
  font-size:clamp(1.5rem,2.6vw,2.25rem);font-weight:700;
  letter-spacing:-.01em;text-transform:uppercase;margin-bottom:32px;
}
.block-title>span{border-bottom:3px solid var(--lime);padding-bottom:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:12px;
  padding:16px 28px;font-size:.92rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
  border:1px solid transparent;position:relative;overflow:hidden;
  transition:color .3s ease,border-color .3s ease,background-color .3s ease,transform .3s ease;
}
.btn svg{width:18px;height:18px;flex:none;transition:transform .3s ease}
.btn:hover svg{transform:translateX(5px)}
.btn:active{transform:scale(.97)}
.btn-lime{background:var(--lime);color:#111110}
.btn-lime:hover{background:var(--ink)}
.btn-ghost{border-color:var(--line-strong);color:var(--ink)}
.btn-ghost:hover{border-color:var(--lime);color:var(--lime)}

/* ---------- HEADER ---------- */
.site-head{
  position:fixed;top:0;left:0;right:0;z-index:100;
  border-bottom:1px solid var(--line);
  background:rgba(17,17,16,.82);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.head-in{
  max-width:var(--maxw);margin:0 auto;padding:0 var(--pad);
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:baseline;gap:8px;flex:none}
.brand-mark{width:12px;height:12px;background:var(--lime);align-self:center}
.brand-word{font-size:1.3rem;font-weight:700;letter-spacing:.08em}
.brand-reg{font-size:.6rem;color:var(--ink-faint)}

.main-nav{display:flex;gap:clamp(16px,2.4vw,36px)}
.main-nav a{
  display:flex;align-items:baseline;gap:6px;
  font-size:.85rem;font-weight:500;letter-spacing:.08em;text-transform:uppercase;
  color:var(--ink-dim);transition:color .25s ease;padding:6px 0;
}
.main-nav a sup{font-size:.58rem;color:var(--lime);font-weight:600}
.main-nav a:hover{color:var(--ink)}

.head-right{display:flex;align-items:center;gap:20px}
.lang-switch{display:flex;border:1px solid var(--line-strong)}
.lang-switch button{
  padding:7px 9px;font-size:.68rem;font-weight:600;letter-spacing:.06em;
  color:var(--ink-dim);border-right:1px solid var(--line);
  transition:background-color .2s ease,color .2s ease;
}
.lang-switch button:last-child{border-right:0}
.lang-switch button:hover{color:var(--ink)}
.lang-switch button.is-active{background:var(--lime);color:#111110}
.btn-head{padding:10px 18px;font-size:.78rem}

.menu-toggle{display:none;flex-direction:column;gap:6px;padding:8px}
.menu-toggle i{display:block;width:26px;height:2px;background:var(--ink);transition:transform .3s ease,opacity .3s ease}
.menu-toggle[aria-expanded="true"] i:nth-child(1){transform:translateY(4px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] i:nth-child(2){transform:translateY(-4px) rotate(-45deg)}

.mobile-menu{
  position:fixed;inset:0;z-index:99;background:var(--bg);
  display:flex;flex-direction:column;justify-content:center;gap:48px;
  padding:96px var(--pad) 48px;
  opacity:0;visibility:hidden;transition:opacity .35s ease,visibility .35s ease;
}
.mobile-menu.is-open{opacity:1;visibility:visible}
.mobile-nav{display:flex;flex-direction:column}
.mobile-nav a{
  display:flex;align-items:baseline;gap:16px;padding:18px 0;
  border-bottom:1px solid var(--line);
  font-size:clamp(1.8rem,7vw,2.6rem);font-weight:700;text-transform:uppercase;letter-spacing:-.01em;
}
.mobile-nav a em{font-style:normal;font-size:.85rem;color:var(--lime);font-weight:600}
.mobile-lang{align-self:flex-start}

/* ---------- HERO ---------- */
.hero{
  min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  padding-top:120px;padding-bottom:48px;position:relative;z-index:1;
}
.hero-in{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(32px,5vw,72px);align-items:center}
.hero-title{
  margin:8px 0 32px;
  font-size:clamp(3rem,8.2vw,7.5rem);
  font-weight:700;line-height:.98;letter-spacing:-.03em;text-transform:uppercase;
}
.hero-title .mask{display:block;overflow:hidden;padding:0 .14em .07em;margin:0 -.14em -.07em}
.hero-title .line{display:inline-block;will-change:transform}
.line-accent{color:var(--lime)}
.hero-desc{max-width:46ch;color:var(--ink-dim);font-size:clamp(.98rem,1.25vw,1.12rem);line-height:1.7}
.hero-ctas{display:flex;flex-wrap:wrap;gap:16px;margin-top:36px}

.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);
  border:1px solid var(--line);margin-top:clamp(40px,5vw,64px);
}
.stat-cell{padding:22px 24px;border-right:1px solid var(--line);position:relative}
.stat-cell:last-child{border-right:0}
.stat-value{
  display:block;font-size:clamp(2rem,3.6vw,3.2rem);font-weight:700;line-height:1;
  color:var(--lime);letter-spacing:-.02em;font-variant-numeric:tabular-nums;
}
.stat-value sup{font-size:.45em;font-weight:600;margin-left:2px}
.stat-label{display:block;margin-top:8px;font-size:.72rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint)}

.hero-media{position:relative}
.hero-media-main{
  position:relative;border:1px solid var(--line-strong);overflow:hidden;
  aspect-ratio:4/3.1;background:var(--bg2);
}
.hero-media-main img{width:100%;height:100%;object-fit:cover;transform:scale(1.08)}
.hero-media-main::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(17,17,16,.55));
  pointer-events:none;
}
.hero-media-tag{
  position:absolute;left:0;bottom:0;z-index:2;
  background:var(--lime);color:#111110;
  font-size:.7rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
  padding:9px 16px;
}
.hero-media-strip{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:16px;
}
.hero-media-strip figure{
  border:1px solid var(--line);overflow:hidden;aspect-ratio:16/9.5;background:var(--bg2);position:relative;
}
.hero-media-strip img{width:100%;height:100%;object-fit:cover;filter:saturate(.85);transition:transform .6s cubic-bezier(.22,1,.36,1),filter .6s ease}
.hero-media-strip figure:hover img{transform:scale(1.06);filter:saturate(1.1)}

.scroll-hint{
  position:absolute;left:var(--pad);bottom:32px;z-index:2;
  display:flex;align-items:center;gap:14px;
  font-size:.68rem;font-weight:600;letter-spacing:.24em;text-transform:uppercase;color:var(--ink-faint);
  transition:color .25s ease;
}
.scroll-hint:hover{color:var(--lime)}
.scroll-hint i{display:block;width:1px;height:44px;background:var(--line-strong);position:relative;overflow:hidden}
.scroll-hint i::after{
  content:'';position:absolute;left:0;top:-50%;width:100%;height:50%;background:var(--lime);
  animation:scrollDrip 1.8s cubic-bezier(.65,0,.35,1) infinite;
}
@keyframes scrollDrip{to{top:110%}}

/* ---------- MARQUEE ---------- */
.marquee{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:var(--lime);color:#111110;
  overflow:hidden;position:relative;z-index:1;
}
.marquee-track{
  display:flex;width:max-content;
  animation:marquee 28s linear infinite;
}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-seg{
  display:flex;align-items:center;flex:none;
  padding:18px 0;
  font-size:clamp(1rem,2.2vw,1.6rem);font-weight:700;letter-spacing:.04em;text-transform:uppercase;
  white-space:nowrap;
}
.marquee-seg span{padding:0 22px}
.marquee-seg b{font-weight:400;font-size:.8em;padding:0 4px}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ---------- ABOUT ---------- */
.sec-about{background:var(--bg)}
.about-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:clamp(40px,5vw,80px);align-items:start}
.about-media{position:relative;border:1px solid var(--line-strong);overflow:hidden;background:var(--bg2)}
.about-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:10/9;filter:saturate(.9)}
.about-est-tag{
  position:absolute;top:0;right:0;background:var(--bg);border-left:1px solid var(--line-strong);border-bottom:1px solid var(--line-strong);
  padding:14px 20px;font-size:.78rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--lime);
}
.about-points{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 40px}
.about-points li{
  display:inline-flex;align-items:center;gap:10px;
  border:1px solid var(--line-strong);padding:10px 18px;
  font-size:.82rem;font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-dim);
}
.about-points li::before{content:'';width:8px;height:8px;background:var(--lime);flex:none}
.about-trio{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line)}
.trio-cell{padding:26px 24px;border-right:1px solid var(--line);background:var(--bg2);transition:background-color .3s ease}
.trio-cell:last-child{border-right:0}
.trio-cell:hover{background:#201f1d}
.trio-cell h3{
  font-size:.82rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--lime);margin-bottom:12px;
}
.trio-cell p{font-size:.9rem;line-height:1.65;color:var(--ink-dim)}

/* ---------- ADVANTAGES · sticky stack ---------- */
.sec-adv{background:var(--bg2)}
.adv-stack{display:flex;flex-direction:column;gap:24px}
.adv-card{
  position:sticky;
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:clamp(20px,4vw,64px);
  background:var(--bg);border:1px solid var(--line-strong);
  padding:clamp(28px,4vw,56px) clamp(24px,4vw,64px);
  min-height:clamp(200px,26vh,280px);
  transform-origin:center top;will-change:transform;
}
.adv-card-index{
  font-size:clamp(2.6rem,6vw,5rem);font-weight:700;line-height:1;letter-spacing:-.03em;
  color:transparent;-webkit-text-stroke:1.5px var(--lime);
  font-variant-numeric:tabular-nums;flex:none;
}
.adv-card-body h3{
  font-size:clamp(1.4rem,2.8vw,2.2rem);font-weight:700;text-transform:uppercase;letter-spacing:-.01em;
  margin-bottom:12px;
}
.adv-card-body p{color:var(--ink-dim);font-size:clamp(.92rem,1.1vw,1.02rem);max-width:52ch}
.adv-card-icon{
  width:clamp(56px,6vw,84px);height:clamp(56px,6vw,84px);flex:none;
  border:1px solid var(--line-strong);display:grid;place-items:center;
  color:var(--lime);transition:background-color .3s ease,color .3s ease;
}
.adv-card-icon svg{width:55%;height:55%}
.adv-card:hover .adv-card-icon{background:var(--lime);color:#111110}

/* ---------- PRODUCTS · pinned horizontal ---------- */
.sec-products{background:var(--bg);overflow:clip}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px}
.sec-head-row .sec-head{margin-bottom:0;flex:1}
.h-progress{flex:none;padding-bottom:8px;min-width:220px}
.h-progress-bar{height:2px;background:var(--line-strong);position:relative}
.h-progress-bar i{position:absolute;left:0;top:0;bottom:0;width:0;background:var(--lime)}

.hwrap{margin-top:clamp(40px,5vw,64px);overflow:clip}
.htrack{
  display:flex;gap:clamp(20px,2.5vw,36px);
  padding:8px var(--pad) 24px;
  width:max-content;will-change:transform;
}
.p-card{
  width:clamp(300px,34vw,440px);flex:none;
  border:1px solid var(--line-strong);background:var(--bg2);
  display:flex;flex-direction:column;position:relative;
  transition:border-color .3s ease;
}
.p-card:hover{border-color:var(--lime)}
.p-card-media{position:relative;overflow:hidden;aspect-ratio:4/3;background:#201f1d}
.p-card-media img{
  width:100%;height:100%;object-fit:cover;filter:saturate(.88);
  clip-path:inset(0 0 0 0);
  transition:transform .7s cubic-bezier(.22,1,.36,1),clip-path .7s cubic-bezier(.22,1,.36,1),filter .5s ease;
}
.p-card:hover .p-card-media img{transform:scale(1.07);clip-path:inset(4% 4% 4% 4%);filter:saturate(1.08)}
.p-card-num{
  position:absolute;top:0;left:0;z-index:2;
  background:var(--lime);color:#111110;
  font-size:.72rem;font-weight:700;letter-spacing:.14em;padding:8px 14px;
  font-variant-numeric:tabular-nums;
}
.p-card-body{padding:26px 26px 30px;display:flex;flex-direction:column;gap:12px;flex:1}
.p-card-body h3{font-size:clamp(1.15rem,1.6vw,1.45rem);font-weight:700;text-transform:uppercase;letter-spacing:.01em}
.p-card-body>p{font-size:.88rem;line-height:1.65;color:var(--ink-dim);flex:1}
.p-card-tags{display:flex;flex-wrap:wrap;gap:8px}
.p-card-tags span{
  font-size:.66rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;
  color:var(--lime);border:1px solid rgba(217,242,79,.35);padding:5px 10px;
}
.p-card-cta{
  width:clamp(300px,30vw,400px);flex:none;
  border:1px dashed var(--line-strong);
  display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:24px;
  padding:clamp(28px,3vw,48px);
}
.p-card-cta h3{font-size:clamp(1.6rem,2.6vw,2.4rem);font-weight:700;text-transform:uppercase;line-height:1.1;letter-spacing:-.01em}

/* gallery */
.gallery-block{margin-top:clamp(72px,9vw,120px)}
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.g-item{position:relative;overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3;background:var(--bg2)}
.g-item img{
  width:100%;height:100%;object-fit:cover;filter:saturate(.85);
  transition:transform .7s cubic-bezier(.22,1,.36,1),filter .5s ease;
}
.g-item:hover img{transform:scale(1.06);filter:saturate(1.05)}
.g-item figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 18px;font-size:.74rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  background:linear-gradient(180deg,transparent,rgba(17,17,16,.9));
  transform:translateY(100%);transition:transform .45s cubic-bezier(.22,1,.36,1);
}
.g-item:hover figcaption{transform:translateY(0)}

/* ---------- HEALTHY ---------- */
.sec-healthy{background:var(--bg2)}
.healthy-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(40px,6vw,96px);align-items:center}
.healthy-media{position:relative;display:grid;place-items:center}
.healthy-media::before{
  content:'';position:absolute;width:78%;aspect-ratio:1;border-radius:50%;
  border:1px solid var(--line-strong);
}
.healthy-media::after{
  content:'';position:absolute;width:78%;aspect-ratio:1;border-radius:50%;
  background:radial-gradient(circle,rgba(217,242,79,.12),transparent 65%);
}
.healthy-media img{position:relative;z-index:1;width:82%;filter:drop-shadow(0 32px 48px rgba(0,0,0,.45))}
.healthy-points{margin-top:36px;border-top:1px solid var(--line)}
.healthy-points li{
  display:flex;align-items:center;gap:18px;
  padding:18px 4px;border-bottom:1px solid var(--line);
  font-size:clamp(.95rem,1.15vw,1.05rem);color:var(--ink);
  transition:padding-left .3s ease;
}
.healthy-points li:hover{padding-left:14px}
.healthy-points li::before{content:'';width:10px;height:10px;background:var(--lime);flex:none}
.healthy-points li span:last-child{margin-left:auto;font-size:.7rem;font-weight:600;letter-spacing:.14em;color:var(--ink-faint);font-variant-numeric:tabular-nums}

/* ---------- FACTORY ---------- */
.factory-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(40px,5vw,80px);align-items:start}
.factory-media{border:1px solid var(--line-strong);overflow:hidden;background:var(--bg2);position:relative}
.factory-media img{width:100%;object-fit:cover;aspect-ratio:16/10;filter:saturate(.85)}
.factory-est{font-size:.78rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-faint)}
.factory-est b{color:var(--lime);margin-left:8px}
.factory-name{font-size:clamp(1.25rem,2vw,1.7rem);font-weight:700;line-height:1.25;margin:16px 0 20px}
.factory-desc{color:var(--ink-dim);font-size:.95rem;line-height:1.7}
.factory-features{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:36px}
.f-feature{
  border:1px solid var(--line);background:var(--bg2);padding:24px 20px;
  transition:border-color .3s ease,transform .3s ease;
}
.f-feature:hover{border-color:var(--lime);transform:translateY(-4px)}
.f-feature .f-icon{width:44px;height:44px;border:1px solid var(--line-strong);display:grid;place-items:center;color:var(--lime);margin-bottom:16px}
.f-feature .f-icon svg{width:22px;height:22px}
.f-feature h4{font-size:.85rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;margin-bottom:8px}
.f-feature p{font-size:.8rem;color:var(--ink-dim);line-height:1.6}
.factory-gallery-block{margin-top:clamp(64px,8vw,96px)}
.factory-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}

/* ---------- PROCESS ---------- */
.sec-process{background:var(--bg2)}
.process-line{height:2px;background:var(--line-strong);margin-bottom:0;position:relative}
.process-line i{position:absolute;left:0;top:0;bottom:0;width:0;background:var(--lime)}
.process-steps{
  display:grid;grid-template-columns:repeat(5,1fr);
  border-left:1px solid var(--line);border-bottom:1px solid var(--line);
}
.step{
  border-top:1px solid var(--line);border-right:1px solid var(--line);
  padding:32px 24px 40px;position:relative;background:var(--bg2);
  transition:background-color .3s ease;
}
.step:hover{background:#201f1d}
.step-index{
  display:block;font-size:clamp(2.2rem,4vw,3.6rem);font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1.5px rgba(242,239,233,.4);
  font-variant-numeric:tabular-nums;transition:-webkit-text-stroke-color .3s ease;
}
.step:hover .step-index{-webkit-text-stroke-color:var(--lime)}
.step-icon{width:40px;height:40px;color:var(--lime);margin:24px 0 16px}
.step-icon svg{width:100%;height:100%}
.step h3{font-size:.95rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase}

/* ---------- CERTS + PARTNERS ---------- */
.certs-grid{display:grid;grid-template-columns:repeat(4,1fr);border-left:1px solid var(--line);border-top:1px solid var(--line)}
.cert-cell{
  border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:clamp(28px,3vw,44px) clamp(22px,2.5vw,36px);background:var(--bg);
  transition:background-color .3s ease;
}
.cert-cell:hover{background:var(--bg2)}
.cert-badge{
  display:block;font-size:clamp(1.8rem,3.4vw,3rem);font-weight:700;letter-spacing:-.02em;line-height:1;
  color:var(--lime);
}
.cert-name{display:block;margin-top:14px;font-size:.85rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase}
.cert-desc{display:block;margin-top:8px;font-size:.78rem;color:var(--ink-faint);letter-spacing:.06em;text-transform:uppercase}

.trust-block{
  margin-top:clamp(56px,7vw,88px);
  border:1px solid var(--line-strong);background:var(--bg2);
  padding:clamp(36px,5vw,64px);
  display:grid;grid-template-columns:1fr 1.2fr;gap:clamp(24px,4vw,64px);align-items:center;
}
.trust-block h3{font-size:clamp(1.6rem,3vw,2.6rem);font-weight:700;text-transform:uppercase;letter-spacing:-.01em;line-height:1.1}
.trust-block p{color:var(--ink-dim);font-size:.95rem;line-height:1.75}

.partners-block{margin-top:clamp(72px,9vw,112px)}
.partners-grid{display:grid;grid-template-columns:repeat(3,1fr);border-left:1px solid var(--line);border-top:1px solid var(--line)}
.partner-cell{
  border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  min-height:130px;display:flex;align-items:center;justify-content:center;gap:12px;
  font-size:clamp(.95rem,1.4vw,1.2rem);font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-faint);transition:color .3s ease,background-color .3s ease;
}
.partner-cell::before{content:'';width:9px;height:9px;border:1.5px solid var(--lime);flex:none;transition:background-color .3s ease}
.partner-cell:hover{color:var(--ink);background:var(--bg2)}
.partner-cell:hover::before{background:var(--lime)}

/* ---------- CONTACT ---------- */
.sec-contact{background:var(--bg2)}
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(40px,5vw,80px);align-items:start}
.contact-info h3{font-size:.8rem;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--lime);margin-bottom:28px}
.c-info-row{border-top:1px solid var(--line);padding:20px 0;display:grid;grid-template-columns:130px 1fr;gap:16px}
.c-info-row dt{font-size:.7rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint);padding-top:3px}
.c-info-row dd{font-size:.95rem;line-height:1.65}
.c-info-row dd a{transition:color .25s ease}
.c-info-row dd a:hover{color:var(--lime)}
.c-hours{margin-top:8px}
.c-hours li{display:flex;justify-content:space-between;gap:16px;padding:8px 0;font-size:.85rem;color:var(--ink-dim);border-bottom:1px dashed var(--line)}
.c-hours li b{font-weight:500;color:var(--ink)}

.contact-form{border:1px solid var(--line-strong);background:var(--bg);padding:clamp(28px,3.5vw,48px)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.form-field{margin-bottom:24px;display:flex;flex-direction:column;gap:10px}
.form-field label{font-size:.7rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-faint)}
.form-field input,.form-field select,.form-field textarea{
  background:var(--bg2);border:1px solid var(--line-strong);
  padding:14px 16px;font-size:.95rem;
  transition:border-color .25s ease,background-color .25s ease;
  appearance:none;-webkit-appearance:none;border-radius:0;
}
.form-field select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23D9F24F' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 16px center;
}
.form-field textarea{resize:vertical;min-height:120px}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--ink-faint)}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;border-color:var(--lime);background-color:#201f1d;
}
.btn-submit{width:100%;justify-content:center}

/* ---------- FOOTER ---------- */
.site-foot{border-top:1px solid var(--line);position:relative;z-index:1;background:var(--bg);overflow:clip}
.foot-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:clamp(32px,4vw,64px);
  padding-top:clamp(72px,8vw,112px);padding-bottom:clamp(48px,6vw,80px);
}
.foot-col h4{
  font-size:.72rem;font-weight:700;letter-spacing:.22em;text-transform:uppercase;
  color:var(--lime);margin-bottom:22px;
}
.foot-col a{display:block;padding:6px 0;font-size:.9rem;color:var(--ink-dim);transition:color .25s ease,padding-left .25s ease}
.foot-col a:hover{color:var(--lime);padding-left:8px}
.foot-desc{font-size:.95rem;color:var(--ink-dim);line-height:1.75;max-width:34ch}
.foot-products a{display:block}
.foot-contact-line{display:block;padding:6px 0;font-size:.9rem;color:var(--ink-dim)}
.foot-contact-line a{display:inline;padding:0}
.foot-contact-line a:hover{color:var(--lime)}

.foot-giant{
  border-top:1px solid var(--line);
  display:flex;justify-content:center;overflow:clip;
  padding:clamp(8px,1.5vw,24px) 0 0;
  user-select:none;
}
.foot-giant span{
  display:block;
  font-size:clamp(6rem,23.5vw,22rem);
  font-weight:700;line-height:.82;letter-spacing:.02em;text-transform:uppercase;
  color:transparent;-webkit-text-stroke:1.5px rgba(242,239,233,.28);
  transform:translateY(12%);
  transition:color .6s ease,-webkit-text-stroke-color .6s ease;
  white-space:nowrap;
}
.foot-giant:hover span{color:var(--lime);-webkit-text-stroke-color:var(--lime)}

.foot-bar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding-top:24px;padding-bottom:32px;border-top:1px solid var(--line);
  font-size:.78rem;color:var(--ink-faint);
}
.foot-bar-links{display:flex;gap:28px}
.foot-bar-links a{transition:color .25s ease}
.foot-bar-links a:hover{color:var(--lime)}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .main-nav{display:none}
  .certs-grid{grid-template-columns:repeat(2,1fr)}
  .process-steps{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:900px){
  .btn-head{display:none}
  .menu-toggle{display:flex}
  .head-right .lang-switch{display:none}
  .hero{padding-top:104px}
  .hero-in{grid-template-columns:1fr;gap:48px}
  .hero-media{max-width:640px}
  .about-grid,.factory-grid,.healthy-grid,.contact-grid{grid-template-columns:1fr}
  .healthy-media{max-width:420px;margin:0 auto;order:2}
  .trust-block{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  /* products：小屏降级为纵向网格，不 pin */
  .htrack{width:auto;flex-direction:column;padding:8px var(--pad) 24px}
  .p-card,.p-card-cta{width:100%}
  .h-progress{display:none}
}
@media (max-width:640px){
  .hero-title{font-size:clamp(2.1rem,10.5vw,3rem)}
  .hero-stats{grid-template-columns:1fr;border:0}
  .stat-cell{border-right:0;border-bottom:1px solid var(--line);display:flex;align-items:baseline;justify-content:space-between;gap:16px}
  .stat-cell:last-child{border-bottom:0}
  .stat-label{margin-top:0}
  .about-trio{grid-template-columns:1fr}
  .trio-cell{border-right:0;border-bottom:1px solid var(--line)}
  .trio-cell:last-child{border-bottom:0}
  .gallery-grid,.factory-gallery{grid-template-columns:1fr 1fr}
  .certs-grid,.partners-grid,.process-steps{grid-template-columns:1fr 1fr}
  .adv-card{grid-template-columns:1fr;gap:20px;min-height:0}
  .adv-card-icon{display:none}
  .form-row{grid-template-columns:1fr;gap:0}
  .c-info-row{grid-template-columns:1fr;gap:6px}
  .foot-grid{grid-template-columns:1fr}
  .scroll-hint{display:none}
}
@media (max-width:420px){
  .gallery-grid,.factory-gallery,.certs-grid,.partners-grid,.process-steps{grid-template-columns:1fr}
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .marquee-track{animation:none}
  .scroll-hint i::after{animation:none}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;animation-iteration-count:1 !important}
}