/* ========================================================
   火焰AI超级员工 · 设计系统
   色彩取意"炭火"：暗炭底色 + 燃烧渐变(赭红→橙→金) + 一条会走动的火星线
   字体：Fraunces(展示衬线,取其有机笔形,像被烧过的边角) + Inter(西文正文)
         + PingFang SC/微软雅黑(中文正文) + JetBrains Mono(数据/标签)
   ======================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,600;9..144,700;9..144,900&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root{
  --bg:#120C0A;
  --bg-2:#1B130F;
  --bg-3:#241A14;
  --card:#1F1611;
  --card-hover:#2A1E17;
  --ink:#F6F1EA;
  --muted:#AB9C8D;
  --muted-2:#7A6C5F;
  --line:rgba(246,241,234,.11);
  --line-strong:rgba(246,241,234,.20);

  --ember:#C43E1E;
  --ember-bright:#E85A2E;
  --flame:#FF8A3D;
  --gold:#F2B25C;

  --grad-flame:linear-gradient(115deg,#7A1B0E 0%,#C43E1E 42%,#F2812F 75%,#F2B25C 100%);
  --grad-flame-soft:linear-gradient(115deg,rgba(196,62,30,.16),rgba(242,178,92,.10));
  --grad-text:linear-gradient(100deg,#F2B25C 0%,#FF8A3D 45%,#E85A2E 100%);

  --radius:18px;
  --radius-sm:10px;
  --shadow:0 24px 64px -12px rgba(196,62,30,.32);
  --shadow-soft:0 16px 44px -14px rgba(0,0,0,.55);

  --font-display:'Fraunces',"PingFang SC","Microsoft YaHei",serif;
  --font-body:'Inter',-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  color:var(--ink);background:var(--bg);
  line-height:1.75;-webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(1000px 560px at 90% 0%, rgba(196,62,30,.24), transparent 60%),
    radial-gradient(800px 520px at 6% 22%, rgba(242,178,92,.10), transparent 60%),
    radial-gradient(900px 600px at 96% 55%, rgba(232,90,46,.14), transparent 62%),
    radial-gradient(800px 560px at 2% 80%, rgba(196,62,30,.13), transparent 60%),
    radial-gradient(700px 500px at 80% 102%, rgba(242,178,92,.10), transparent 60%);
  background-attachment:fixed;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{list-style:none}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
section{padding:100px 0}
strong{font-weight:600}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}

/* ---------- 排版基础 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--gold);margin-bottom:18px;
}
.eyebrow::before{content:'';width:20px;height:1.5px;background:var(--grad-flame);border-radius:2px}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:700;color:var(--ink);letter-spacing:.2px}
.section-title{font-size:36px;line-height:1.32;max-width:680px}
.section-title em{font-style:normal;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.section-sub{font-size:15.5px;color:var(--muted);margin-top:14px;max-width:600px;line-height:1.9}
.center{text-align:center}
.center .section-title,.center .section-sub{margin-left:auto;margin-right:auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;padding:14px 32px;border-radius:11px;
  font-size:15px;font-weight:600;font-family:var(--font-body);transition:all .25s cubic-bezier(.2,.7,.3,1);
  cursor:pointer;border:none;white-space:nowrap;
}
.btn-primary{background:var(--grad-flame);color:#fff;box-shadow:0 10px 28px -6px rgba(196,62,30,.55)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 36px -6px rgba(196,62,30,.7)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line-strong)}
.btn-ghost:hover{border-color:var(--ember-bright);background:rgba(196,62,30,.08)}
.btn-sm{padding:10px 20px;font-size:13.5px}

/* ---------- 火星走线（签名元素）---------- */
.ember-rule{position:relative;height:1px;background:var(--line);overflow:visible;margin:0}
.ember-rule::after{
  content:'';position:absolute;top:50%;left:-6px;width:6px;height:6px;border-radius:50%;
  background:var(--gold);box-shadow:0 0 10px 2px rgba(242,178,92,.8),0 0 24px 6px rgba(232,90,46,.35);
  transform:translateY(-50%);animation:ember-travel 7s linear infinite;
}
@keyframes ember-travel{
  0%{left:-2%;opacity:0}
  6%{opacity:1}
  94%{opacity:1}
  100%{left:101%;opacity:0}
}

/* ---------- 导航 ---------- */
header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(11,9,8,.82);backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);transition:background .3s,box-shadow .3s;
}
header.scrolled{background:rgba(11,9,8,.96);box-shadow:0 12px 32px rgba(0,0,0,.45)}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.logo{display:flex;align-items:center;gap:11px;font-family:var(--font-display);font-size:16.5px;font-weight:700;color:var(--ink);white-space:nowrap}
.logo .mark{height:52px;width:auto;flex:none;object-fit:contain;filter:drop-shadow(0 4px 10px rgba(196,62,30,.4))}
.logo span{display:block}
.logo small{display:block;font-family:var(--font-mono);font-size:10px;font-weight:500;letter-spacing:.16em;color:var(--muted);text-transform:uppercase;margin-top:1px}
.nav-links{display:flex;gap:8px;align-items:center}
.nav-links a{
  font-size:14.5px;color:#CFC7BC;font-weight:500;padding:9px 16px;border-radius:8px;
  transition:color .2s,background .2s;position:relative;
}
.nav-links a:hover{color:#fff;background:rgba(246,241,234,.05)}
.nav-links a.active{color:#fff}
.nav-links a.active::after{
  content:'';position:absolute;left:16px;right:16px;bottom:2px;height:2px;background:var(--grad-flame);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:14px}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px;z-index:110}
.hamburger span{width:22px;height:2px;background:#fff;border-radius:2px;transition:.3s;transform-origin:center}
.hamburger.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.is-active span:nth-child(2){opacity:0}
.hamburger.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
body.menu-open{overflow:hidden}

/* ---------- 页面头（子页面小 Hero）---------- */
.page-hero{padding:168px 0 68px;position:relative;overflow:hidden}
.page-hero::before{
  content:'';position:absolute;left:50%;top:-160px;transform:translateX(-50%);
  width:820px;height:420px;background:radial-gradient(closest-side,rgba(196,62,30,.22),transparent);pointer-events:none;
}
.breadcrumb{font-family:var(--font-mono);font-size:12px;color:var(--muted-2);margin-bottom:18px;letter-spacing:.04em}
.breadcrumb a{color:var(--muted);transition:color .2s}
.breadcrumb a:hover{color:var(--gold)}
.page-hero h1{font-size:42px;line-height:1.28;max-width:760px;position:relative;z-index:1}
.page-hero .lead{font-size:16.5px;color:#C9C0B5;max-width:640px;margin-top:18px;line-height:1.95;position:relative;z-index:1}

/* ---------- 首屏 Hero ---------- */
.hero{padding:186px 0 108px;position:relative;overflow:hidden}
.hero::before{
  content:'';position:absolute;left:62%;top:-260px;
  width:980px;height:640px;background:radial-gradient(closest-side,rgba(196,62,30,.26),transparent 65%);pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;position:relative;z-index:1}
.hero h1{font-size:54px;line-height:1.22;letter-spacing:.2px}
.hero h1 .grad-text{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{font-size:16.5px;color:#C9C0B5;margin:24px 0 36px;max-width:560px;line-height:2}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.hero-badges{display:flex;gap:24px;margin-top:48px;flex-wrap:wrap}
.hero-badge{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--muted);font-family:var(--font-mono)}
.hero-badge svg{width:16px;height:16px;color:var(--ember-bright);flex:none}

/* 火焰视觉图形 */
.flame-visual{position:relative;aspect-ratio:1/1.05;border-radius:24px;overflow:hidden;
  background:linear-gradient(175deg,#1A1310 0%,#0D0A08 100%);border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
}
.flame-visual .glow-a{position:absolute;width:260px;height:260px;left:50%;top:62%;transform:translate(-50%,-50%);
  background:radial-gradient(closest-side,rgba(232,90,46,.55),transparent 70%);filter:blur(6px);animation:flicker 4.5s ease-in-out infinite;
}
.flame-visual .glow-b{position:absolute;width:170px;height:170px;left:38%;top:48%;
  background:radial-gradient(closest-side,rgba(242,178,92,.45),transparent 70%);filter:blur(10px);animation:flicker 3.4s ease-in-out infinite reverse;
}
@keyframes flicker{0%,100%{opacity:.75;transform:translate(-50%,-50%) scale(1)}50%{opacity:1;transform:translate(-50%,-52%) scale(1.06)}}
.flame-visual .grid-lines{position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:38px 38px;opacity:.5}
.flame-visual .content{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:flex-end;padding:30px;z-index:1}
.flame-visual .content .stat-line{display:flex;justify-content:space-between;align-items:baseline;padding:12px 0;border-top:1px solid var(--line)}
.flame-visual .content .stat-line b{font-family:var(--font-mono);font-size:22px;color:var(--gold);font-weight:600}
.flame-visual .content .stat-line span{font-size:12.5px;color:var(--muted)}
.flame-visual .badge-top{position:absolute;top:26px;left:26px;font-family:var(--font-mono);font-size:11.5px;color:var(--muted);letter-spacing:.1em;text-transform:uppercase;z-index:1;display:flex;align-items:center;gap:8px}
.flame-visual .badge-top .dot{width:7px;height:7px;border-radius:50%;background:var(--flame);box-shadow:0 0 8px 2px rgba(255,138,61,.7);animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

/* ---------- 卡片通用 ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  transition:transform .3s cubic-bezier(.2,.7,.3,1),box-shadow .3s,border-color .3s,background .3s;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-soft);border-color:var(--line-strong);background:var(--card-hover)}
.icon-tile{
  width:50px;height:50px;border-radius:13px;background:rgba(232,90,46,.20);color:var(--ember-bright);
  display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:20px;transition:.3s;
  border:1px solid rgba(232,90,46,.25);
}
.card:hover .icon-tile{background:var(--grad-flame);color:#fff}

.tag{font-size:11.5px;color:var(--gold);background:rgba(196,62,30,.12);border:1px solid rgba(196,62,30,.25);padding:3px 11px;border-radius:14px;font-family:var(--font-mono)}

/* ---------- 网格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}

/* ---------- 数据条 ---------- */
.stats-band{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:64px 0}
.stat-item{text-align:center}
.stat-item .num{font-family:var(--font-mono);font-size:38px;font-weight:600;color:transparent;background:var(--grad-text);-webkit-background-clip:text;background-clip:text}
.stat-item .label{font-size:13.5px;color:var(--muted);margin-top:8px;letter-spacing:.03em}

/* ---------- CTA ---------- */
.cta-box{
  background:var(--grad-flame);border-radius:26px;padding:68px 56px;text-align:center;color:#fff;
  position:relative;overflow:hidden;
}
.cta-box::before,.cta-box::after{content:'';position:absolute;border-radius:50%;background:rgba(255,255,255,.10)}
.cta-box::before{width:280px;height:280px;left:-90px;top:-130px}
.cta-box::after{width:210px;height:210px;right:-70px;bottom:-90px}
.cta-box h2{font-size:32px;position:relative;z-index:1}
.cta-box p{font-size:15.5px;margin:16px auto 32px;opacity:.94;max-width:540px;position:relative;z-index:1}
.btn-white{background:#fff;color:var(--ember);box-shadow:0 10px 30px rgba(0,0,0,.25);position:relative;z-index:1}
.btn-white:hover{transform:translateY(-2px)}

/* ---------- 页脚 ---------- */
footer{background:#070505;border-top:1px solid var(--line);color:var(--muted);padding:68px 0 32px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}
.foot-brand .logo{color:var(--ink);margin-bottom:16px}
.foot-brand p{font-size:13.5px;line-height:1.9;color:var(--muted);max-width:280px}
.foot-col h4{color:var(--ink);font-size:14.5px;margin-bottom:18px;font-weight:600;font-family:var(--font-body)}
.foot-col li{margin-bottom:11px}
.foot-col a{font-size:13.5px;color:var(--muted);transition:color .2s}
.foot-col a:hover{color:var(--gold)}
.foot-contact li{font-size:13.5px;color:var(--muted);margin-bottom:11px;display:flex;gap:8px;align-items:flex-start}
.foot-bottom{border-top:1px solid var(--line);margin-top:48px;padding-top:24px;display:flex;justify-content:space-between;font-size:12px;color:var(--muted-2);flex-wrap:wrap;gap:10px;font-family:var(--font-mono)}

/* ---------- 滚动入场 ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:none}

/* ---------- 核心卖点条 ---------- */
.value-band{padding:56px 0 0}
.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.value-item{background:var(--bg);padding:30px 26px;text-align:center;transition:background .3s}
.value-item:hover{background:var(--card)}
.value-item .v-num{font-family:var(--font-mono);font-size:30px;font-weight:600;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.value-item .v-label{font-size:13px;color:var(--muted);margin-top:8px;letter-spacing:.02em}

/* ---------- 吉祥物 & 火星粒子 ---------- */
.mascot-wrap{position:relative;display:flex;align-items:center;justify-content:center}
.mascot-wrap .mascot-glow{position:absolute;width:70%;aspect-ratio:1/1;border-radius:50%;
  background:radial-gradient(closest-side,rgba(232,90,46,.38),transparent 72%);filter:blur(6px);
  animation:flicker 4.5s ease-in-out infinite;
}
.mascot-wrap img.mascot{position:relative;z-index:1;max-width:78%;filter:drop-shadow(0 22px 40px rgba(196,62,30,.35));
  animation:mascot-float 5.5s ease-in-out infinite;
}
@keyframes mascot-float{0%,100%{transform:translateY(0) rotate(-1deg)}50%{transform:translateY(-14px) rotate(1deg)}}

.sparks{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.spark{position:absolute;bottom:-10px;width:5px;height:5px;border-radius:50%;
  background:var(--gold);box-shadow:0 0 8px 2px rgba(242,178,92,.85);opacity:0;
  animation:spark-rise linear infinite;
}
@keyframes spark-rise{
  0%{transform:translateY(0) translateX(0);opacity:0}
  10%{opacity:.9}
  90%{opacity:.5}
  100%{transform:translateY(-420px) translateX(var(--drift,20px));opacity:0}
}
.spark:nth-child(1){left:8%;animation-duration:6.5s;animation-delay:.2s;--drift:16px}
.spark:nth-child(2){left:22%;animation-duration:5.2s;animation-delay:1.6s;--drift:-14px}
.spark:nth-child(3){left:38%;animation-duration:7.4s;animation-delay:.8s;--drift:22px}
.spark:nth-child(4){left:55%;animation-duration:5.8s;animation-delay:2.4s;--drift:-18px}
.spark:nth-child(5){left:70%;animation-duration:6.9s;animation-delay:.4s;--drift:14px}
.spark:nth-child(6){left:85%;animation-duration:5.5s;animation-delay:1.9s;--drift:-10px}
.spark:nth-child(7){left:94%;animation-duration:7.1s;animation-delay:3.1s;--drift:12px}

/* ---------- 行业动态 ---------- */
.news-card{padding:30px;display:flex;flex-direction:column;height:100%}
.news-meta{display:flex;align-items:center;gap:10px;margin-bottom:14px;font-family:var(--font-mono);font-size:12px;color:var(--muted-2)}
.news-card h3{font-size:17.5px;line-height:1.5;margin-bottom:10px}
.news-card p{font-size:13.5px;color:var(--muted);flex:1}
.news-card .read-more{display:inline-flex;margin-top:16px;font-size:13.5px;color:var(--gold);font-weight:600}
.article-body{max-width:720px;margin:0 auto;font-size:15.5px;color:#D4CCC2;line-height:2}
.article-body h2{font-size:22px;color:var(--ink);margin:36px 0 14px}
.article-body p{margin-bottom:16px}
.article-body ul,.article-body ol{margin:0 0 16px 22px;color:#D4CCC2}
.article-body li{margin-bottom:8px}

/* ---------- 对比表(为什么选择火焰AI) ---------- */
.compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line-strong);border-radius:var(--radius);overflow:hidden}
.compare-col{padding:34px 30px;text-align:center}
.compare-col.us{background:var(--grad-flame-soft);border-right:1px solid var(--line)}
.compare-col.them{background:var(--bg-2)}
.compare-col h3{font-size:18px;margin-bottom:22px;display:flex;align-items:center;justify-content:center;gap:10px}
.compare-col.us h3{color:var(--gold)}
.compare-col.them h3{color:var(--muted)}
.compare-list{display:grid;gap:13px}
.compare-item{display:flex;gap:10px;align-items:center;justify-content:center;font-size:13.8px;line-height:1.6;text-align:center}
.compare-item .ic{flex:none;width:20px;height:20px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:11px}
.compare-col.us .ic{background:var(--grad-flame);color:#fff}
.compare-col.us .compare-item{color:#E9E1D6}
.compare-col.them .ic{background:rgba(246,241,234,.10);color:var(--muted)}
.compare-col.them .compare-item{color:var(--muted)}

/* ---------- 资质滚动条 ---------- */
.qual-band{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:44px 0;overflow:hidden}
.qual-band .qual-head{text-align:center;margin-bottom:28px}
.qual-track{display:flex;gap:20px;width:max-content;animation:qual-scroll 32s linear infinite}
.qual-track:hover{animation-play-state:paused}
.qual-item{flex:none;width:260px;height:200px;border-radius:12px;overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow-soft);background:var(--bg-3);display:flex;align-items:center;justify-content:center}
.qual-item img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;display:block;margin:auto}
@keyframes qual-scroll{
  0%{transform:translateX(0)}
  100%{transform:translateX(-50%)}
}

/* ---------- 办公场景 ---------- */
.office-figure{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow-soft)}
.office-figure img{width:100%;display:block}

/* ---------- 案例卡片 / 首页图标网格(可响应式) ---------- */
.case-card-grid{padding:40px;display:grid;grid-template-columns:1fr 1.4fr;gap:36px;align-items:center}
.about-icon-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* ---------- 悬浮联系插件 ---------- */
.float-widget{position:fixed;right:22px;bottom:26px;z-index:200;display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.float-btn{
  width:50px;height:50px;border-radius:50%;background:var(--card);border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;color:var(--ink);cursor:pointer;
  box-shadow:0 10px 26px rgba(0,0,0,.5);transition:.25s;position:relative;font-size:20px;
}
.float-btn:hover{background:var(--grad-flame);color:#fff;transform:translateY(-3px) scale(1.04);border-color:transparent}
.float-btn .dot-badge{position:absolute;top:-2px;right:-2px;width:11px;height:11px;border-radius:50%;background:var(--flame);
  border:2px solid var(--bg);animation:pulse 2s ease-in-out infinite}
.float-btn .popover{
  position:absolute;right:62px;top:50%;transform:translateY(-50%) translateX(6px);
  background:var(--card);border:1px solid var(--line-strong);border-radius:12px;padding:16px 18px;
  min-width:180px;font-size:13px;color:var(--muted);opacity:0;pointer-events:none;
  transition:opacity .2s,transform .2s;box-shadow:0 16px 40px rgba(0,0,0,.55);text-align:left;
}
.float-btn .popover strong{display:block;color:var(--ink);font-size:14px;margin-bottom:6px;font-family:var(--font-body)}
.float-btn .popover a{color:var(--gold);font-weight:600}
.float-btn:hover .popover,.float-btn:focus-within .popover{opacity:1;transform:translateY(-50%) translateX(0);pointer-events:auto}
.float-btn .popover img.qr-mini{width:130px;border-radius:8px;margin-top:8px;display:block}
.float-btn.top{opacity:0;visibility:hidden;transform:translateY(10px)}
.float-btn.top.show{opacity:1;visibility:visible;transform:translateY(0)}

/* ---------- 响应式 ---------- */
@media(max-width:960px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .flame-visual{max-width:420px;margin:0 auto}
  .foot-grid{grid-template-columns:1fr 1fr}
  .hero h1{font-size:40px}
  .grid-2{grid-template-columns:1fr}
  .value-grid{grid-template-columns:repeat(2,1fr)}
  .compare-wrap{grid-template-columns:1fr}
  .compare-col.us{border-right:none;border-bottom:1px solid var(--line)}
  .case-card-grid{grid-template-columns:1fr;padding:30px;gap:24px}
}
@media(max-width:640px){
  section{padding:60px 0}
  .container{padding:0 20px}
  .nav{height:64px}
  header{backdrop-filter:none;-webkit-backdrop-filter:none}
  .logo .mark{height:40px}
  .logo{font-size:14px;gap:8px}
  .logo small{font-size:9px}
  .nav-actions{gap:8px}
  .nav-actions .btn-sm{padding:9px 14px;font-size:12.5px}
  .nav-links{display:none}
  .hamburger{display:flex}
  .nav-links.open{
    display:flex;position:fixed;top:64px;left:0;right:0;bottom:0;flex-direction:column;align-items:stretch;
    background:rgba(9,7,6,.98);backdrop-filter:blur(10px);padding:18px 22px;gap:2px;
    border-top:1px solid var(--line);overflow-y:auto;animation:menu-in .25s ease;
  }
  .nav-links.open a{padding:15px 6px;font-size:16px;border-bottom:1px solid var(--line)}
  .nav-links.open a.active::after{display:none}
  .nav-links.open a.active{color:var(--gold)}
  @keyframes menu-in{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}

  .grid-3,.grid-4,.value-grid{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr;gap:20px}
  .case-card-grid{grid-template-columns:1fr!important;padding:24px!important;gap:20px!important}
  .about-icon-grid{gap:12px}

  .float-widget{right:12px;bottom:14px;gap:8px;padding-bottom:env(safe-area-inset-bottom)}
  .float-btn{width:42px;height:42px;font-size:16px}
  .float-btn .popover{right:48px;min-width:min(58vw,190px);padding:12px 14px;font-size:12.5px}
  .float-btn .popover img.qr-mini{width:110px}

  .hero{padding:130px 0 64px}
  .hero h1{font-size:28px;line-height:1.3}
  .hero p{font-size:14.5px;margin:18px 0 26px}
  .hero-btns{gap:12px}
  .hero-btns .btn{flex:1 1 auto;justify-content:center}
  .hero-badges{gap:14px;margin-top:32px}
  .hero-badge{font-size:11.5px}
  .mascot-wrap img.mascot{max-width:62%}

  .page-hero{padding:118px 0 44px}
  .page-hero h1{font-size:26px}
  .page-hero .lead{font-size:14.5px}
  .breadcrumb{font-size:11px}

  .section-title{font-size:23px}
  .section-sub{font-size:14px}
  .eyebrow{font-size:11px;margin-bottom:14px}

  .card{border-radius:14px}
  .icon-tile{width:44px;height:44px;font-size:19px;margin-bottom:16px}

  .compare-wrap{border-radius:14px}
  .compare-col{padding:26px 20px}
  .compare-item{font-size:13px}

  .qual-band{padding:34px 0}
  .qual-item{width:190px;height:150px}
  .qual-track{gap:14px}

  .office-figure{border-radius:14px}

  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-brand p{max-width:none}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:6px}

  .cta-box{padding:40px 24px;border-radius:20px}
  .cta-box h2{font-size:22px}
  .cta-box p{font-size:13.5px}

  .btn{padding:13px 22px;font-size:14px}

  .stat-item .num{font-size:28px}
  .value-item{padding:24px 18px}
  .value-item .v-num{font-size:24px}

  .article-body{font-size:14.5px}
  .article-body h2{font-size:19px;margin:28px 0 12px}
}

@media(max-width:380px){
  .logo span small{display:none}
  .logo{font-size:13px}
  .nav-actions .btn-sm{display:none}
  .hero h1{font-size:25px}
  .value-grid{grid-template-columns:1fr}
}