/* ═══════════════════════════════════════════
   汇能科技官网 — main.css
   Design System & Global Styles
═══════════════════════════════════════════ */
body { font-variant-numeric: lining-nums; }

/* — 自托管 Cormorant Garamond（拉丁标题字）— */
@font-face{ font-family:'Cormorant Garamond'; font-style:normal; font-weight:300; font-display:swap;
  src:url('../fonts/cormorant-300.woff2') format('woff2'); }
@font-face{ font-family:'Cormorant Garamond'; font-style:normal; font-weight:400; font-display:swap;
  src:url('../fonts/cormorant-400.woff2') format('woff2'); }
@font-face{ font-family:'Cormorant Garamond'; font-style:italic; font-weight:400; font-display:swap;
  src:url('../fonts/cormorant-italic.woff2') format('woff2'); }

/* ── CSS Variables ── */
:root {
  --black:       #080808;
  --deep:        #111111;
  --surface:     #181818;
  --card:        #1e1e1e;
  --card-hover:  #242424;
  --border:      rgba(255,255,255,0.07);
  --border-md:   rgba(255,255,255,0.12);
  --red:         #CC0000;
  --red-dim:     rgba(204,0,0,0.12);
  --red-glow:    rgba(204,0,0,0.05);
  --gold:        #c9a84c;
  --gold-dim:    rgba(201,168,76,0.10);
  --white:       #ffffff;
  --t1:          rgba(255,255,255,0.92);
  --t2:          rgba(255,255,255,0.52);
  --t3:          rgba(255,255,255,0.28);
  --t4:          rgba(255,255,255,0.12);
 --serif: 'Cormorant Garamond', Georgia, 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans SC', sans-serif;
  --sans: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Source Han Sans SC', system-ui, sans-serif;
  --nav-h:       72px;
  --radius:      4px;
  --transition:  0.35s cubic-bezier(0.4,0,0.2,1);
}

/* ── Reset ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{background:var(--black);color:var(--t1);font-family:var(--sans);font-weight:300;line-height:1.7;overflow-x:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{cursor:pointer;font-family:var(--sans)}
::selection{background:var(--red);color:#fff}
::-webkit-scrollbar{width:2px}
::-webkit-scrollbar-track{background:var(--black)}
::-webkit-scrollbar-thumb{background:var(--red)}

/* ── Noise texture overlay ── */
body::before{
  content:'';position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.035'/%3E%3C/svg%3E");
  opacity:.45;
}

/* ═══════════════════════════════════════════
   TYPOGRAPHY
═══════════════════════════════════════════ */
.label{
  display:flex;align-items:center;gap:12px;
  font-size:20px;letter-spacing:.2em;color:var(--red);text-transform:uppercase;
  margin-bottom:18px;
}
.label::before{content:'';width:28px;height:1px;background:var(--red)}

.display{
  font-family:var(--serif);font-weight:300;line-height:1.1;
  letter-spacing:-.02em;color:var(--white);
}
.display-xl{font-size:clamp(52px,7vw,96px)}
.display-lg{font-size:clamp(40px,5vw,68px)}
.display-md{font-size:clamp(30px,4vw,52px)}
.display-sm{font-size:clamp(24px,3vw,38px)}

.body-lg{font-size:15px;color:var(--t2);line-height:1.9}
.body-md{font-size:14px;color:var(--t2);line-height:1.85}
.body-sm{font-size:13px;color:var(--t2);line-height:1.8}
.caption{font-size:12px;color:var(--t3);letter-spacing:.04em}

/* ═══════════════════════════════════════════
   BUTTONS
═══════════════════════════════════════════ */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--sans);font-size:13px;font-weight:400;letter-spacing:.1em;
  padding:14px 32px;border:none;transition:var(--transition);
  position:relative;overflow:hidden;white-space:nowrap;
}
.btn::after{
  content:'';position:absolute;inset:0;
  background:rgba(255,255,255,.08);
  transform:scaleX(0);transform-origin:left;
  transition:transform .3s ease;
}
.btn:hover::after{transform:scaleX(1)}
.btn:hover{transform:translateY(-2px)}
.btn svg{transition:transform .3s}
.btn:hover svg{transform:translateX(4px)}

.btn-primary{background:var(--red);color:#fff}
.btn-primary:hover{background:#aa0000;box-shadow:0 12px 32px rgba(204,0,0,.28)}

.btn-ghost{
  background:transparent;color:var(--t2);
  border:0.5px solid rgba(255,255,255,.2);
}
.btn-ghost:hover{color:var(--white);border-color:rgba(255,255,255,.45)}

.btn-sm{font-size:12px;padding:10px 22px}
.btn-lg{font-size:14px;padding:18px 40px}

/* Arrow icon helper */
.arrow-icon{width:16px;height:16px;flex-shrink:0}

/* ═══════════════════════════════════════════
   LAYOUT UTILS
═══════════════════════════════════════════ */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 48px}
.section{/*padding:120px 0*/;position:relative;z-index:1}
.section-sm{padding:80px 0;position:relative;z-index:1}
.divider{width:100%;height:1px;background:var(--border)}

.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:1px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:1px}

/* ═══════════════════════════════════════════
   NAV
═══════════════════════════════════════════ */
#nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 48px;
  background:rgba(8,8,8,.82);
  backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);
  border-bottom:0.5px solid var(--border);
  transition:height var(--transition),background var(--transition);
}
#nav.scrolled{height:60px;background:rgba(8,8,8,.96)}

.nav-logo img{height:60px;width:auto}

.nav-menu{display:flex;align-items:center;gap:36px}
.nav-menu a{
  font-size:13px;font-weight:400;letter-spacing:.04em;
  color:var(--t2);position:relative;transition:color .3s;
}
.nav-menu a::after{
  content:'';position:absolute;bottom:-4px;left:0;
  width:0;height:1px;background:var(--red);
  transition:width .3s ease;
}
.nav-menu a:hover{color:var(--white)}
.nav-menu a:hover::after,
.nav-menu a.active::after{width:100%}
.nav-menu a.active{color:var(--white)}

.nav-right{display:flex;align-items:center;gap:20px}
.nav-phone{font-size:12px;color:var(--t3);letter-spacing:.04em}

/* Hamburger */
.nav-toggle{
  display:none;flex-direction:column;gap:5px;
  background:none;border:none;padding:6px;
}
.nav-toggle span{
  display:block;width:22px;height:1.5px;
  background:var(--t2);transition:var(--transition);
}
.nav-toggle.open span:nth-child(1){transform:rotate(45deg) translate(4px,4px)}
.nav-toggle.open span:nth-child(2){opacity:0;transform:scaleX(0)}
.nav-toggle.open span:nth-child(3){transform:rotate(-45deg) translate(4px,-4px)}

/* Mobile menu */
.nav-mobile{
  display:none;position:fixed;
  top:var(--nav-h);left:0;right:0;bottom:0;
  background:rgba(8,8,8,.98);
  flex-direction:column;align-items:center;justify-content:center;
  gap:40px;z-index:999;
  opacity:0;pointer-events:none;transition:opacity .3s;
}
.nav-mobile.open{opacity:1;pointer-events:auto}
.nav-mobile a{font-size:24px;color:var(--t2);letter-spacing:.06em;transition:color .3s}
.nav-mobile a:hover{color:var(--white)}
.nav-mobile .btn{margin-top:16px}

/* ═══════════════════════════════════════════
   HERO
═══════════════════════════════════════════ */
.hero{
  position:relative;min-height:100vh;
  display:flex;flex-direction:column;justify-content:center;
  overflow:hidden;padding-top:var(--nav-h);
}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background:#050505;
}
/* Slider */
.hero-slider{
  position:absolute;inset:0;width:100%;height:100%;
}
.hero-slide{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;
  opacity:0;
  filter:brightness(.85) saturate(.75);
  transition:opacity 1.4s ease;
}
.hero-slide.active{
  opacity:.72;
}
.hero-bg::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(to right,rgba(8,8,8,.5) 40%,rgba(8,8,8,.3) 100%),
             linear-gradient(to top,rgba(8,8,8,.4) 0%,transparent 40%);
}
/* Grid lines */
.hero-grid{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px);
  background-size:88px 88px;
}
/* Left accent */
.hero::before{
  content:'';position:absolute;left:0;top:0;bottom:0;z-index:2;
  width:3px;
  background:linear-gradient(to bottom,transparent,var(--red) 25%,var(--red) 75%,transparent);
}
.hero-content{
  position:relative;z-index:3;
  padding:0 48px;max-width:900px;
}
/* Animations */
.hero-eyebrow{opacity:0;animation:fadeUp .8s ease .2s forwards}
.hero-h1{opacity:0;animation:fadeUp .9s ease .4s forwards}
.hero-desc{opacity:0;animation:fadeUp .9s ease .6s forwards}
.hero-actions{opacity:0;animation:fadeUp .9s ease .8s forwards}
.hero-stats{opacity:0;animation:fadeUp .9s ease 1s forwards}

.hero-h1{margin:28px 0 24px}
.hero-h1 em{font-style:italic;color:var(--t2)}
.hero-h1 .red{color:var(--red);font-style:italic}

.hero-desc{max-width:520px;margin-bottom:48px}

.hero-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap}

/* Stats bar */
.hero-stats{
  position:absolute;bottom:0;left:0;right:0;z-index:3;
  display:grid;grid-template-columns:repeat(4,1fr);
  background:rgba(8,8,8,.75);
  border-top:0.5px solid var(--border);
  backdrop-filter:blur(12px);
}
.stat-cell{
  padding:22px 32px;
  border-right:0.5px solid var(--border);
  transition:background var(--transition);
}
.stat-cell:last-child{border-right:none}
.stat-cell:hover{background:var(--red-glow)}
.stat-n{
  font-family:var(--serif);font-size:34px;font-weight:300;
  color:var(--white);line-height:1;margin-bottom:4px;
}
.stat-n sup{font-size:18px;color:var(--red)}
.stat-l{font-size:12px;color:var(--t3);letter-spacing:.05em}

/* ═══════════════════════════════════════════
   MARQUEE
═══════════════════════════════════════════ */
.marquee-wrap{
  overflow:hidden;border-top:0.5px solid var(--border);border-bottom:0.5px solid var(--border);
  background:var(--surface);padding:16px 0;
}
.marquee-track{display:flex;white-space:nowrap;animation:marquee 32s linear infinite}
.marquee-track:hover{animation-play-state:paused}
.marquee-item{
  display:inline-flex;align-items:center;gap:18px;
  padding:0 36px;font-size:12px;letter-spacing:.18em;
  color:var(--t3);text-transform:uppercase;
}
.marquee-dot{width:3px;height:3px;background:var(--red);border-radius:50%;flex-shrink:0}

/* ═══════════════════════════════════════════
   SERVICES
═══════════════════════════════════════════ */
.services-grid{
  background:var(--border);border:0.5px solid var(--border);
}
.svc-card{
  background:var(--deep);padding:44px 36px;
  position:relative;overflow:hidden;transition:background var(--transition);
}
.svc-card::after{
  content:'';position:absolute;bottom:0;left:0;right:0;height:2px;
  background:var(--red);transform:scaleX(0);transform-origin:left;
  transition:transform var(--transition);
}
.svc-card:hover{background:var(--surface)}
.svc-card:hover::after{transform:scaleX(1)}

.svc-num{
  font-family:var(--serif);font-size:12px;letter-spacing:.12em;
  color:var(--red);opacity:.65;margin-bottom:24px;
}
.svc-icon{
  width:42px;height:42px;margin-bottom:22px;
  color:var(--red);opacity:.85;
}
.svc-icon svg{width:100%;height:100%}
.svc-name{font-size:16px;font-weight:400;color:var(--white);margin-bottom:12px}
.svc-desc{font-size:13px;color:var(--t2);line-height:1.8}
.svc-link{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:22px;font-size:12px;color:var(--t3);
  letter-spacing:.08em;transition:color var(--transition);
}
.svc-card:hover .svc-link{color:var(--red)}
.svc-bg{
  position:absolute;right:0;bottom:0;
  width:100%;height:100%;
  pointer-events:none;
  opacity:.55;
  transition:opacity var(--transition);
}
.svc-card:hover .svc-bg{opacity:.9;}

/* ═══════════════════════════════════════════
   CASES
═══════════════════════════════════════════ */
.filter-bar{display:flex;gap:2px;margin-bottom:44px;flex-wrap:wrap}
.filter-btn{
  font-size:12px;letter-spacing:.1em;color:var(--t3);
  background:none;border:0.5px solid transparent;
  padding:8px 20px;transition:all .3s;text-transform:uppercase;
}
.filter-btn:hover{color:var(--white);border-color:var(--border);background:var(--surface)}
.filter-btn.active{color:var(--red);border-color:rgba(204,0,0,.3);background:var(--red-dim)}

.cases-layout{display:grid;gap:1px;background:var(--border);border:0.5px solid var(--border)}
.cases-layout.layout-1{grid-template-columns:2fr 1fr;grid-template-rows:auto auto}
.cases-layout.layout-1 .case-card:first-child{grid-row:span 1}
.cases-right-col{display:flex;flex-direction:column;gap:1px;background:var(--border)}

.case-card{
  position:relative;overflow:hidden;background:var(--surface);
  transition:background var(--transition);cursor:pointer;
}
.case-card:hover{background:var(--card-hover)}

.case-thumb{
  position:relative;width:100%;overflow:hidden;
}
.case-thumb.h-tall{padding-top:58%}
.case-thumb.h-mid{padding-top:62%}
.case-thumb.h-wide{padding-top:42%}

.case-thumb img{
  position:absolute;inset:0;
  width:100%;height:100%;object-fit:cover;
  filter:brightness(.75) saturate(.7);
  transition:transform .6s ease, filter .4s ease;
}
.case-card:hover .case-thumb img{
  transform:scale(1.04);filter:brightness(.88) saturate(.85);
}
.case-overlay{
  position:absolute;inset:0;
  background:linear-gradient(to top,rgba(8,8,8,.85) 0%,transparent 55%);
  transition:opacity var(--transition);
}
.case-hover-overlay{
  position:absolute;inset:0;
  background:rgba(204,0,0,.07);
  opacity:0;transition:opacity var(--transition);
}
.case-card:hover .case-hover-overlay{opacity:1}

.case-body{padding:20px 24px 22px}
.case-tag{
  display:inline-block;font-size:10px;letter-spacing:.15em;
  color:var(--red);border:0.5px solid rgba(204,0,0,.3);
  padding:3px 10px;margin-bottom:10px;text-transform:uppercase;
}
.case-title{font-size:15px;font-weight:400;color:var(--white);margin-bottom:6px;line-height:1.4}
.case-meta{font-size:12px;color:var(--t3);letter-spacing:.03em}
.case-chips{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.case-chip{
  font-size:10px;letter-spacing:.06em;
  color:var(--t3);border:0.5px solid var(--border);
  padding:2px 8px;
}
.case-view-all{
  display:flex;align-items:center;justify-content:center;
  padding:20px;border-top:0.5px solid var(--border);
}

/* ═══════════════════════════════════════════
   SPLIT SECTION (About/Why)
═══════════════════════════════════════════ */
.split{display:grid;grid-template-columns:1fr 1fr}
.split-left{
  padding:100px 64px 100px 0;
  border-right:0.5px solid var(--border);
}
.split-right{padding:100px 0 100px 64px}

.feature-list{margin-top:8px}
.feature-item{
  display:flex;align-items:flex-start;gap:20px;
  padding:22px 0;border-bottom:0.5px solid var(--border);
}
.feature-item:first-child{border-top:0.5px solid var(--border)}
.feature-n{
  font-family:var(--serif);font-size:12px;color:var(--red);
  opacity:.65;padding-top:2px;min-width:22px;
}
.feature-title{font-size:14px;font-weight:400;color:var(--white);margin-bottom:4px}
.feature-desc{font-size:13px;color:var(--t2);line-height:1.75}

/* ═══════════════════════════════════════════
   HOME THEATER
═══════════════════════════════════════════ */
.theater-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.theater-visual{position:relative;border:0.5px solid var(--border);overflow:hidden}
.theater-visual img{width:100%;height:100%;object-fit:cover;display:block;filter:brightness(.85) saturate(.7)}
.theater-badge{
  position:absolute;top:18px;right:18px;
  font-size:10px;letter-spacing:.15em;color:var(--gold);
  border:0.5px solid rgba(201,168,76,.35);
  padding:5px 13px;background:rgba(201,168,76,.1);text-transform:uppercase;
}
.theater-caption{
  position:absolute;bottom:0;left:0;right:0;
  padding:16px 20px;
  background:linear-gradient(to top,rgba(8,8,8,.9),transparent);
  font-size:12px;color:var(--t3);letter-spacing:.06em;
}

.spec-table{margin:28px 0 32px;border:0.5px solid var(--border)}
.spec-row{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 18px;border-bottom:0.5px solid var(--border);
  transition:background var(--transition);
}
.spec-row:last-child{border-bottom:none}
.spec-row:hover{background:var(--surface)}
.spec-key{font-size:13px;color:var(--t2)}
.spec-val{font-size:13px;color:var(--white);text-align:right}
.spec-badge{
  font-size:10px;padding:2px 9px;
  background:var(--red-dim);color:var(--red);
  border:0.5px solid rgba(204,0,0,.2);letter-spacing:.06em;
}
.spec-badge-gold{
  font-size:10px;padding:2px 9px;
  background:var(--gold-dim);color:var(--gold);
  border:0.5px solid rgba(201,168,76,.2);letter-spacing:.06em;
}

/* Lighting showcase */
.lighting-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--border);border:0.5px solid var(--border);margin-top:64px}
.lighting-card{
  position:relative;overflow:hidden;background:var(--surface);
}
.lighting-card img{
  width:100%;object-fit:cover;
  filter:brightness(.7) saturate(.65);
  transition:transform .5s ease, filter .4s;
}
.lighting-card:hover img{transform:scale(1.04);filter:brightness(.85) saturate(.8)}
.lighting-info{
  position:absolute;bottom:0;left:0;right:0;
  padding:20px 22px;
  background:linear-gradient(to top,rgba(8,8,8,.92),transparent);
}
.lighting-name{font-size:15px;font-weight:400;color:var(--red);margin-bottom:4px}
.lighting-desc{font-size:12px;color:var(--t3)}

/* ═══════════════════════════════════════════
   CLIENTS
═══════════════════════════════════════════ */
.clients-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:var(--border);border:0.5px solid var(--border);
}
.client-cell{
  background:var(--deep);padding:22px 18px;
  text-align:center;transition:background var(--transition);
}
.client-cell:hover{background:var(--surface)}
.client-name{font-size:12px;color:var(--t2);line-height:1.5;letter-spacing:.03em}
.client-cell:hover .client-name{color:var(--white)}

/* ═══════════════════════════════════════════
   TESTIMONIALS
═══════════════════════════════════════════ */
.testi-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--border);border:0.5px solid var(--border)}
.testi-card{
  background:var(--deep);padding:44px 40px;
  transition:background var(--transition);
}
.testi-card:hover{background:var(--surface)}
.testi-stars{display:flex;gap:4px;margin-bottom:20px}
.star{
  width:10px;height:10px;background:var(--gold);
  clip-path:polygon(50% 0%,61% 35%,98% 35%,68% 57%,79% 91%,50% 70%,21% 91%,32% 57%,2% 35%,39% 35%);
}
.testi-text{
  font-family:var(--serif);font-size:16px;font-weight:300;
  font-style:italic;color:var(--t1);line-height:1.85;margin-bottom:28px;
}
.testi-author{display:flex;align-items:center;gap:14px}
.testi-avatar{
  width:36px;height:36px;border-radius:0;
  background:var(--red-dim);border:0.5px solid rgba(204,0,0,.3);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;color:var(--red);flex-shrink:0;
}
.testi-name{font-size:13px;font-weight:400;color:var(--white)}
.testi-pos{font-size:11px;color:var(--t3);margin-top:3px;letter-spacing:.03em}

/* ═══════════════════════════════════════════
   FAQ
═══════════════════════════════════════════ */
.faq-layout{display:grid;grid-template-columns:1fr 2fr;gap:80px;align-items:start}
.faq-item{border-bottom:0.5px solid var(--border)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 0;cursor:pointer;gap:20px;
}
.faq-q-text{font-size:14px;font-weight:400;color:var(--t1);line-height:1.5;transition:color .3s}
.faq-q:hover .faq-q-text{color:var(--white)}
.faq-icon{
  width:24px;height:24px;flex-shrink:0;
  border:0.5px solid var(--border);display:flex;
  align-items:center;justify-content:center;
  font-size:16px;color:var(--t3);line-height:1;
  transition:all .3s;
}
.faq-item.open .faq-icon{border-color:var(--red);color:var(--red);transform:rotate(45deg)}
.faq-a{
  font-size:13px;color:var(--t2);line-height:1.85;
  padding-bottom:18px;display:none;
}
.faq-item.open .faq-a{display:block}

/* ═══════════════════════════════════════════
   CTA SECTION
═══════════════════════════════════════════ */
.cta-block{
  background:var(--red);padding:80px 72px;
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1fr auto;align-items:center;gap:60px;
}
.cta-block::before,.cta-block::after{
  content:'';position:absolute;border-radius:50%;
  border:1px solid rgba(255,255,255,.07);pointer-events:none;
}
.cta-block::before{right:-80px;top:-80px;width:360px;height:360px}
.cta-block::after{right:-20px;top:-20px;width:200px;height:200px;border-width:0.5px}

.cta-eyebrow{font-size:11px;letter-spacing:.2em;color:rgba(255,255,255,.6);text-transform:uppercase;margin-bottom:14px}
.cta-title{
  font-family:var(--serif);font-weight:300;line-height:1.3;
  font-size:clamp(26px,3.2vw,42px);color:#fff;letter-spacing:-.01em;
}

.cta-form{display:flex;flex-direction:column;gap:10px;min-width:300px;position:relative;z-index:1}
.cta-input,.cta-select{
  font-family:var(--sans);font-size:13px;font-weight:300;
  color:#fff;background:rgba(255,255,255,.1);
  border:0.5px solid rgba(255,255,255,.25);
  padding:12px 16px;outline:none;transition:border .3s;width:100%;
}
.cta-input::placeholder{color:rgba(255,255,255,.4)}
.cta-input:focus,.cta-select:focus{border-color:rgba(255,255,255,.6)}
.cta-select{cursor:pointer;appearance:none}
.cta-select option{background:var(--black);color:var(--white)}
.cta-btn{
  font-family:var(--sans);font-size:13px;font-weight:500;
  letter-spacing:.12em;color:var(--red);background:#fff;
  border:none;padding:14px 24px;cursor:pointer;
  transition:all .3s;text-transform:uppercase;
}
.cta-btn:hover{background:rgba(255,255,255,.9);transform:translateY(-1px)}
.cta-note{font-size:11px;color:rgba(255,255,255,.4);text-align:center}

/* ═══════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════ */
#footer{
  border-top:0.5px solid var(--border);
  padding:72px 48px 40px;position:relative;z-index:1;
}
.footer-top{
  display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:56px;
  padding-bottom:56px;border-bottom:0.5px solid var(--border);
}
.footer-logo img{height:26px;width:auto;margin-bottom:16px;opacity:.7}
.footer-tagline{
  font-family:var(--serif);font-size:14px;font-style:italic;
  color:var(--t2);margin-bottom:18px;
}
.footer-contact{font-size:12px;color:var(--t3);line-height:2.1}
.footer-col-title{
  font-size:11px;letter-spacing:.16em;color:var(--white);
  text-transform:uppercase;margin-bottom:18px;
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13px;color:var(--t3);transition:color .3s;letter-spacing:.02em}
.footer-links a:hover{color:var(--white)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;
  padding-top:28px;flex-wrap:wrap;gap:12px;
}
.footer-copy{font-size:12px;color:var(--t3);letter-spacing:.04em}
.footer-meta{display:flex;gap:22px}
.footer-meta a{font-size:11px;color:var(--t3);letter-spacing:.07em;transition:color .3s}
.footer-meta a:hover{color:var(--t2)}
@media(min-width:992px){ .footer-brand{margin-left:120px} }

/* ═══════════════════════════════════════════
   FLOATING WIDGET
═══════════════════════════════════════════ */
.float-widget{
  position:fixed;right:28px;bottom:28px;z-index:999;
  display:flex;flex-direction:column;align-items:flex-end;gap:10px;
}
.float-tel{
  display:flex;align-items:center;gap:10px;
  background:var(--surface);border:0.5px solid var(--border);
  padding:10px 16px;font-size:12px;color:var(--t2);
  transition:all .3s;text-decoration:none;
}
.float-tel:hover{border-color:var(--red);color:var(--white)}
.float-chat{
  width:50px;height:50px;background:var(--red);
  display:flex;align-items:center;justify-content:center;
  border:none;color:#fff;transition:all .3s;text-decoration:none;
}
.float-chat:hover{background:#aa0000;transform:scale(1.06)}

/* ═══════════════════════════════════════════
   SCROLL REVEAL
═══════════════════════════════════════════ */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-d1{transition-delay:.1s}
.reveal-d2{transition-delay:.18s}
.reveal-d3{transition-delay:.26s}
.reveal-d4{transition-delay:.34s}

/* ═══════════════════════════════════════════
   ANIMATIONS
═══════════════════════════════════════════ */
@keyframes fadeUp{
  from{opacity:0;transform:translateY(22px)}
  to{opacity:1;transform:translateY(0)}
}
@keyframes marquee{
  from{transform:translateX(0)}
  to{transform:translateX(-50%)}
}

/* ═══════════════════════════════════════════
   RESPONSIVE — Tablet 768–1023
═══════════════════════════════════════════ */
@media(max-width:1023px){
  .container{padding:0 32px}
  #nav{padding:0 32px}
  .nav-menu{display:none}
  .nav-phone{display:none}
  .nav-toggle{display:flex}
  #footer{padding:56px 32px 32px}
  .footer-top{grid-template-columns:1fr 1fr;gap:40px}
  .section{padding:88px 0}
  .hero-content{padding:0 32px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .stat-cell{padding:16px 24px}
  .grid-3{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr}
  .split-left{border-right:none;border-bottom:0.5px solid var(--border);padding:72px 0}
  .split-right{padding:72px 0 0}
  .theater-grid{grid-template-columns:1fr;gap:44px}
  .faq-layout{grid-template-columns:1fr;gap:44px}
  .testi-grid{grid-template-columns:1fr}
  .cta-block{grid-template-columns:1fr;padding:60px 40px;gap:40px}
  .cta-form{min-width:auto}
  .clients-grid{grid-template-columns:repeat(3,1fr)}
  .cases-layout.layout-1{grid-template-columns:1fr}
  .cases-right-col{gap:1px}
  .lighting-grid{grid-template-columns:1fr}
}

/* ═══════════════════════════════════════════
   RESPONSIVE — Mobile <768
═══════════════════════════════════════════ */
@media(max-width:767px){
  :root{--nav-h:60px}
  .container{padding:0 20px}
  #nav{padding:0 20px}
  .nav-logo img{height:26px}
  .btn-nav{display:none}
  .section{padding:64px 0}
  .section-sm{padding:48px 0}
  .hero-content{padding:0 20px}
  .hero-stats{
    position:relative;grid-template-columns:1fr 1fr;
  }
  .stat-cell{padding:14px 18px}
  .stat-n{font-size:26px}
  .display-xl{font-size:clamp(38px,10vw,60px)}
  .display-lg{font-size:clamp(30px,8vw,48px)}
  .display-md{font-size:clamp(24px,6vw,36px)}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .split-left{padding:52px 0}
  .split-right{padding:52px 0 0}
  .theater-grid{gap:32px}
  .cta-block{padding:44px 24px}
  .footer-top{grid-template-columns:1fr;gap:32px}
  #footer{padding:48px 20px 32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .clients-grid{grid-template-columns:1fr 1fr}
  .testi-card{padding:32px 24px}
  .lighting-card img{height:200px}
  .hero-actions{flex-direction:column;align-items:flex-start;gap:14px}
  .float-tel{display:none}
  .cases-layout.layout-1{grid-template-columns:1fr}
  .faq-layout{gap:32px}
}

@media(max-width:480px){
  .hero-stats{grid-template-columns:1fr 1fr}
  .clients-grid{grid-template-columns:1fr}
  .filter-bar{gap:4px}
  .filter-btn{padding:7px 14px;font-size:11px}
}

/* ═══════════════════════════════════════════
   ADVANTAGE SECTION — LEFT / RIGHT BG
═══════════════════════════════════════════ */
.adv-left{
  position:relative;
  background-image:url("../img/adv-left-bg.jpg");
  background-size:cover;
  background-position:center center;
  background-repeat:no-repeat;
}
.adv-left::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(
    to right,
    rgba(8,8,8,0.78) 0%,
    rgba(8,8,8,0.55) 60%,
    rgba(8,8,8,0.40) 100%
  );
  pointer-events:none;
  z-index:0;
}
.adv-left > *{position:relative;z-index:1}

.adv-right{
  position:relative;
  background-image:url("../img/adv-right-bg.jpg");
  background-size:cover;
  background-position:center center;
  background-repeat:no-repeat;
}
.adv-right::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(
    to left,
    rgba(8,8,8,0.72) 0%,
    rgba(8,8,8,0.50) 60%,
    rgba(8,8,8,0.38) 100%
  );
  pointer-events:none;
  z-index:0;
}
.adv-right > *{position:relative;z-index:1}

/* ═══════════════════════════════════════════
   V2 新增：打字机光标
═══════════════════════════════════════════ */
.tw-cursor{
  display:inline-block;color:var(--red);font-weight:300;
  animation:blink .9s step-end infinite;
  margin-left:1px;
}
@keyframes blink{0%,100%{opacity:1}50%{opacity:0}}

/* ═══════════════════════════════════════════
   V2 新增：数字滚动（countUp）
═══════════════════════════════════════════ */
.stat-n{cursor:default}

/* ═══════════════════════════════════════════
   V2 新增：CTA区联系方式行
═══════════════════════════════════════════ */
.cta-contact-row{
  display:flex;align-items:center;gap:10px;
  color:rgba(255,255,255,.7);font-size:13px;
  transition:color .3s;text-decoration:none;
  min-height:44px;
}
.cta-contact-row:hover{color:#fff}
.cta-form textarea.cta-input{
  font-family:var(--sans);font-size:13px;font-weight:300;
  color:#fff;background:rgba(255,255,255,.1);
  border:0.5px solid rgba(255,255,255,.25);
  padding:12px 16px;outline:none;transition:border .3s;width:100%;
}
.cta-form textarea.cta-input::placeholder{color:rgba(255,255,255,.4)}
.cta-form textarea.cta-input:focus{border-color:rgba(255,255,255,.6)}

/* ═══════════════════════════════════════════
   V2 新增：页脚社交图标
═══════════════════════════════════════════ */
.footer-social{
  margin-top:20px;display:flex;gap:14px;align-items:center;
}
.social-icon{
  width:34px;height:34px;
  display:flex;align-items:center;justify-content:center;
  border:0.5px solid var(--border);color:var(--t3);
  transition:all .3s;
}
.social-icon:hover{border-color:var(--red);color:var(--red);transform:translateY(-2px)}

/* ═══════════════════════════════════════════
   V2 新增：返回顶部按钮
═══════════════════════════════════════════ */
.back-to-top{
  position:fixed;right:28px;bottom:96px;z-index:998;
  width:44px;height:44px;
  background:var(--surface);border:0.5px solid var(--border);
  color:var(--t2);display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all .3s;
  opacity:0;pointer-events:none;transform:translateY(10px);
}
.back-to-top.visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.back-to-top:hover{background:var(--red);border-color:var(--red);color:#fff;transform:translateY(-2px)}

/* ═══════════════════════════════════════════
   V2 新增：移动端浮动电话按钮（修复display:none）
═══════════════════════════════════════════ */
.float-tel{
  display:none;
  position:fixed;left:16px;bottom:24px;z-index:999;
  align-items:center;gap:8px;
  background:var(--red);color:#fff;
  padding:12px 20px;font-size:13px;font-weight:400;letter-spacing:.04em;
  border:none;text-decoration:none;
  box-shadow:0 4px 20px rgba(204,0,0,.35);
  transition:all .3s;
  min-height:44px;
}
.float-tel:hover{background:#aa0000;transform:translateY(-2px)}
@media(max-width:767px){
  .float-tel{display:flex}
}

/* ═══════════════════════════════════════════
   V2 新增：在线询价悬浮按钮
═══════════════════════════════════════════ */
.inquiry-fab{
  position:fixed;right:28px;bottom:28px;z-index:999;
  display:flex;align-items:center;gap:8px;
  background:var(--red);color:#fff;border:none;
  padding:14px 20px;font-family:var(--sans);font-size:13px;font-weight:400;
  letter-spacing:.06em;cursor:pointer;
  box-shadow:0 6px 24px rgba(204,0,0,.35);
  transition:all .3s;
  min-height:50px;
}
.inquiry-fab:hover{background:#aa0000;transform:translateY(-2px);box-shadow:0 10px 32px rgba(204,0,0,.4)}
.inquiry-fab svg{flex-shrink:0}
@media(max-width:767px){
  .inquiry-fab{right:16px;padding:12px 16px}
  .inquiry-fab span{display:none}
  .back-to-top{right:16px;bottom:88px}
}

/* ═══════════════════════════════════════════
   V2 新增：在线询价弹窗
═══════════════════════════════════════════ */
.modal-overlay{
  position:fixed;inset:0;z-index:2000;
  background:rgba(0,0,0,.75);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  display:flex;align-items:center;justify-content:center;
  padding:20px;
  opacity:0;pointer-events:none;transition:opacity .3s ease;
}
.modal-overlay.open{opacity:1;pointer-events:auto}
.modal-box{
  background:var(--deep);border:0.5px solid var(--border);
  width:100%;max-width:600px;max-height:90vh;overflow-y:auto;
  padding:48px;position:relative;
  transform:translateY(24px);transition:transform .35s ease;
}
.modal-overlay.open .modal-box{transform:translateY(0)}
.modal-header{
  display:flex;align-items:flex-start;justify-content:space-between;
  margin-bottom:36px;gap:16px;
}
.modal-close{
  background:none;border:0.5px solid var(--border);
  color:var(--t3);padding:8px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:all .3s;flex-shrink:0;
  min-width:44px;min-height:44px;
}
.modal-close:hover{border-color:var(--red);color:var(--red)}
.modal-form{display:flex;flex-direction:column;gap:14px}
.modal-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.modal-input{
  font-family:var(--sans);font-size:13px;font-weight:300;
  color:var(--t1);background:rgba(255,255,255,.06);
  border:0.5px solid var(--border);
  padding:12px 16px;outline:none;transition:border .3s;width:100%;
}
.modal-input::placeholder{color:var(--t3)}
.modal-input:focus{border-color:rgba(255,255,255,.3)}
textarea.modal-input{resize:none}
.modal-checks,.modal-radios{display:flex;flex-direction:column;gap:0}
.check-grid,.radio-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.check-item,.radio-item{
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;border:0.5px solid var(--border);
  cursor:pointer;transition:all .3s;font-size:13px;color:var(--t2);
  min-height:44px;
}
.check-item:hover,.radio-item:hover{border-color:rgba(255,255,255,.2);color:var(--white)}
.check-item input,.radio-item input{
  accent-color:var(--red);width:14px;height:14px;flex-shrink:0;
}
.check-item input:checked ~ span,.radio-item input:checked ~ span{color:var(--white)}
.check-item:has(input:checked),.radio-item:has(input:checked){
  border-color:rgba(204,0,0,.4);background:var(--red-dim);color:var(--white);
}
.modal-submit{
  font-family:var(--sans);font-size:13px;font-weight:500;
  letter-spacing:.12em;color:#fff;background:var(--red);
  border:none;padding:16px 24px;cursor:pointer;
  transition:all .3s;text-transform:uppercase;
  min-height:52px;
}
.modal-submit:hover{background:#aa0000;transform:translateY(-1px)}

/* 表单成功状态 */
.modal-success{
  text-align:center;padding:40px 20px;
  display:none;
  flex-direction:column;align-items:center;gap:16px;
}
.modal-success.show{display:flex}
.modal-success svg{color:var(--red)}
.modal-success p{color:var(--t1);font-size:15px;line-height:1.7}

@media(max-width:600px){
  .modal-box{padding:28px 20px}
  .modal-row{grid-template-columns:1fr}
  .check-grid,.radio-grid{grid-template-columns:1fr}
}

/* ═══════════════════════════════════════════
   V2 修复：移动端触控 & 最小字体
═══════════════════════════════════════════ */
@media(max-width:767px){
  /* 最小字体保障 */
  .svc-desc,.feature-desc,.testi-text,.faq-a,.body-sm{font-size:max(13px,0.8125rem)}
  .case-meta,.spec-key,.spec-val,.client-name,.footer-links a,.caption{font-size:max(12px,0.75rem)}

  /* 触控目标最小44px */
  .btn{min-height:44px}
  .filter-btn{min-height:44px;padding:10px 18px}
  .faq-q{min-height:52px}
  .nav-toggle{min-width:44px;min-height:44px}
  .footer-links a{min-height:44px;display:flex;align-items:center}

  /* 移动端导航修复 */
  .nav-mobile{display:flex}
  .nav-mobile.open{opacity:1;pointer-events:auto}

  /* 表单优化 */
  .cta-block{grid-template-columns:1fr;padding:44px 24px;gap:40px}
  .cta-form{min-width:auto}
}

/* ═══════════════════════════════════════════
   V2 修复：平板1024px断点补充
═══════════════════════════════════════════ */
@media(min-width:768px) and (max-width:1023px){
  .grid-3{grid-template-columns:1fr 1fr}
  .clients-grid{grid-template-columns:repeat(3,1fr)}
}

/* ═══════════════════════════════════════════
   首页新闻区块 — 企业新闻 + 行业动态双栏
═══════════════════════════════════════════ */

/* 区块标题行 */
.hn-news-header{
  display:flex;align-items:flex-end;justify-content:space-between;
  margin-bottom:48px;
}
.hn-news-more{
  font-size:13px;color:var(--t3);
  padding-bottom:4px;border-bottom:0.5px solid var(--border);
  transition:color .3s;white-space:nowrap;
}
.hn-news-more:hover{color:var(--red)}

/* 双栏容器 */
.hn-news-cols{
  display:grid;
  grid-template-columns:1fr 1px 1fr;
  gap:0 48px;
}

/* 分隔线 */
.hn-col-divider{
  background:var(--border);
  width:1px;
  align-self:stretch;
}

/* 栏标题 */
.hn-news-col-title{
  display:flex;align-items:center;gap:10px;
  font-size:13px;font-weight:400;color:var(--white);
  letter-spacing:.04em;
  padding-bottom:14px;
  border-bottom:0.5px solid var(--border);
  margin-bottom:24px;
}
.hn-col-dot{
  width:6px;height:6px;background:var(--red);
  flex-shrink:0;
}
.hn-col-more{
  margin-left:auto;font-size:11px;color:var(--t3);
  transition:color .3s;letter-spacing:.06em;
}
.hn-col-more:hover{color:var(--red)}

/* 空状态提示 */
.hn-empty{
  font-size:13px;color:var(--t3);
  padding:40px 0;text-align:center;
  border:0.5px dashed var(--border);
}

/* ── 头条大卡 ── */
.hn-featured-card{
  display:block;text-decoration:none;
  border:0.5px solid var(--border);
  overflow:hidden;
  transition:border-color .3s, background .3s;
  margin-bottom:1px;
  background:var(--deep);
}
.hn-featured-card:hover{
  border-color:rgba(204,0,0,.4);
  background:var(--surface);
}

.hn-featured-img{
  position:relative;
  width:100%;padding-top:52%;
  overflow:hidden;background:var(--surface);
}
.hn-featured-img img{
  position:absolute;inset:0;
  width:100%;height:100%;object-fit:cover;
  filter:brightness(.90) saturate(.7);
  transition:transform .5s ease, filter .4s;
}
.hn-featured-card:hover .hn-featured-img img{
  transform:scale(1.04);
  filter:brightness(.9) saturate(.85);
}
.hn-img-placeholder{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg, var(--surface), var(--card));
  color:var(--t4);
}

.hn-cat-tag{
  position:absolute;top:12px;left:12px;z-index:1;
  font-size:10px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--red);background:rgba(8,8,8,.5);
  border:0.5px solid rgba(204,0,0,.3);
  padding:3px 10px;
  backdrop-filter:blur(4px);
}

.hn-featured-body{padding:18px 20px 22px}
.hn-date{
  display:block;font-size:11px;
  color:var(--t3);letter-spacing:.04em;
  margin-bottom:8px;
}
.hn-featured-title{
  font-size:15px;font-weight:400;color:var(--white);
  line-height:1.5;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;
  -webkit-box-orient:vertical;overflow:hidden;
}
.hn-featured-summary{
  font-size:13px;color:var(--t2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;
  -webkit-box-orient:vertical;overflow:hidden;
}

/* ── 文字列表 ── */
.hn-list{
  list-style:none;padding:0;margin:0;
  border:0.5px solid var(--border);
  border-top:none;
}
.hn-list-item{
  border-bottom:0.5px solid var(--border);
  transition:background .25s;
}
.hn-list-item:last-child{border-bottom:none}
.hn-list-item:hover{background:var(--surface)}
.hn-list-item a{
  display:flex;align-items:center;gap:10px;
  padding:13px 16px;text-decoration:none;
  min-height:44px;
}
.hn-list-cat{
  flex-shrink:0;
  font-size:10px;letter-spacing:.08em;
  color:var(--red);
  border:0.5px solid rgba(204,0,0,.25);
  padding:1px 7px;white-space:nowrap;
}
.hn-list-title{
  flex:1;font-size:13px;color:var(--t1);
  line-height:1.45;min-width:0;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  transition:color .25s;
}
.hn-list-item:hover .hn-list-title{color:var(--red)}
.hn-list-date{
  flex-shrink:0;font-size:11px;
  color:var(--t3);letter-spacing:.03em;
  white-space:nowrap;
}

/* ── 响应式 ── */
@media(max-width:1023px){
  .hn-news-cols{
    grid-template-columns:1fr;
    gap:48px 0;
  }
  .hn-col-divider{display:none}
}
@media(max-width:767px){
  .hn-news-header{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:32px}
  .hn-featured-img{padding-top:56%}
  .hn-featured-title{font-size:14px}
}
/* 蜜罐字段：真人不可见、不可聚焦；机器人会自动填，从而被识别 */
.hp-field{
  position:absolute !important;
  left:-9999px !important;
  top:auto;
  width:1px; height:1px;
  opacity:0; overflow:hidden;
  pointer-events:none;
}
/* ═══════════════════════════════════════════
   移动端精修 V3 —— 追加到 main.css 末尾
   （放最后，覆盖优先级最高；只补不重写）
═══════════════════════════════════════════ */

/* 防止 iOS/安卓 字号自动缩放 */
html{ -webkit-text-size-adjust:100%; text-size-adjust:100%; }

/* ★修复：平板/大屏手机(768–1023px)汉堡菜单点击无反应
   —— 汉堡在≤1023显示，但移动菜单原来只在≤767才显示，中间区间打不开 */
@media(max-width:1023px){
  .nav-mobile{ display:flex; }
}

@media(max-width:767px){
  /* ★修复：iOS 聚焦输入框自动放大（字号<16px会触发），表单输入统一16px */
  .cta-input, .cta-select, textarea.cta-input,
  .modal-input, textarea.modal-input{ font-size:16px; }

  /* 区块眉标缩小（桌面20px在手机上偏大、易换行） */
  .label{ font-size:13px; letter-spacing:.16em; margin-bottom:14px; }
  .label::before{ width:20px; }

  /* 卡片内边距收紧，信息更聚拢 */
  .svc-card{ padding:32px 24px; }
  .case-body{ padding:16px 18px; }
  .modal-box{ padding:32px 22px; }

  /* hero：用 svh 避免移动端地址栏伸缩导致的高度跳动；间距收紧 */
  .hero{ min-height:100svh; }
  .hero-h1{ margin:20px 0 18px; }
  .hero-desc{ margin-bottom:32px; }

  /* 跑马灯窄屏收紧 */
  .marquee-item{ padding:0 24px; letter-spacing:.12em; }

  /* 浮动按钮留足安全间距（电话左下、询价右下、返回顶部右侧） */
  .inquiry-fab{ bottom:20px; }
  .float-tel{ bottom:20px; }
}

@media(max-width:480px){
  .container{ padding:0 16px; }
  #nav{ padding:0 16px; }
  .hero-content{ padding:0 16px; }
  .cta-block{ padding:36px 20px; }
  .svc-card{ padding:26px 20px; }
  .testi-card{ padding:26px 20px; }
}

/* 尊重系统“减弱动效”：关跑马灯/入场动画，照顾晕动症&省电 */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
}
/* 修复：成功案例左侧大卡被拉高后底部留白 —— 让封面图撑满剩余高度 */
@media(min-width:1024px){
  .cases-layout.layout-1 .case-card:first-child{
    display:flex;
    flex-direction:column;
  }
  .cases-layout.layout-1 .case-card:first-child .case-thumb{
    flex:1 1 auto;
    padding-top:0;        /* 取消固定比例，改为撑满 */
    min-height:320px;
  }
}
/* ── 成功案例分类按钮：更清晰精致 ── */
.filter-bar{ gap:8px; margin-bottom:40px; flex-wrap:wrap; }
.filter-btn{
  display:inline-flex; align-items:center;
  font-size:13px; letter-spacing:.04em; color:var(--t2);
  background:transparent; border:0.5px solid var(--border-md);
  padding:9px 22px; border-radius:2px; text-transform:none;
  text-decoration:none; cursor:pointer;
  transition:color .25s, border-color .25s, background .25s;
}
.filter-btn:hover{ color:#fff; border-color:rgba(255,255,255,.35); background:var(--surface); }
.filter-btn.active{ color:#fff; border-color:var(--red); background:var(--red); }