/* ============================================================
   青软科技 QingSoft · 官网样式
   主题：精炼科技光感 (Refined Tech Luminescence)
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root{
  /* 底色 */
  --bg:        #060912;
  --bg-2:      #0A0F1E;
  --bg-3:      #0E1528;
  --surface:   rgba(255,255,255,.035);
  --surface-2: rgba(255,255,255,.06);
  --border:    rgba(255,255,255,.08);
  --border-2:  rgba(255,255,255,.14);

  /* 文字 */
  --text:      #EAF0FB;
  --text-dim:  #93A0BC;
  --text-mute: #5E6B85;

  /* 品牌色：青 */
  --cyan:      #2DE2C8;
  --cyan-2:    #14B8A6;
  --blue:      #4F8CFF;
  --violet:    #8B5CF6;
  --green:     #34D399;
  --grad:      linear-gradient(100deg,#2DE2C8 0%,#4F8CFF 100%);
  --grad-cyan: linear-gradient(135deg,#2DE2C8,#14B8A6);
  --grad-blue: linear-gradient(135deg,#4F8CFF,#8B5CF6);
  --grad-green:linear-gradient(135deg,#34D399,#2DE2C8);

  /* 阴影 */
  --shadow:    0 24px 60px -20px rgba(0,0,0,.6);
  --glow-cyan: 0 0 60px -10px rgba(45,226,200,.35);

  /* 排版 */
  --font-display: 'Sora','Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  --font-body:    'Noto Sans SC','Sora','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  --font-mono:    'JetBrains Mono',ui-monospace,monospace;

  /* 容器 */
  --container: 1240px;
  --radius:    18px;
  --radius-sm: 12px;
}

/* ---------- 基础重置 ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  font-weight:400;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  letter-spacing:.01em;
}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img,svg{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
::selection{background:rgba(45,226,200,.28);color:#fff}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 28px}

/* ---------- 滚动进度 ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;height:2px;width:0;z-index:200;
  background:var(--grad);
  box-shadow:0 0 12px rgba(45,226,200,.6);
  transition:width .1s linear;
}

/* ---------- 背景氛围层 ---------- */
.ambient{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.ambient__grid{
  position:absolute;inset:-2px;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 30%,transparent 75%);
}
.ambient__orb{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5;will-change:transform}
.ambient__orb--1{width:540px;height:540px;background:radial-gradient(circle,rgba(45,226,200,.32),transparent 70%);top:-160px;left:-120px;animation:drift1 26s ease-in-out infinite}
.ambient__orb--2{width:480px;height:480px;background:radial-gradient(circle,rgba(79,140,255,.26),transparent 70%);top:30%;right:-160px;animation:drift2 32s ease-in-out infinite}
.ambient__orb--3{width:420px;height:420px;background:radial-gradient(circle,rgba(139,92,246,.18),transparent 70%);bottom:-120px;left:30%;animation:drift1 38s ease-in-out infinite reverse}
@keyframes drift1{0%,100%{transform:translate(0,0)}50%{transform:translate(60px,40px)}}
@keyframes drift2{0%,100%{transform:translate(0,0)}50%{transform:translate(-50px,30px)}}

/* ---------- 导航 ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:.35s ease}
.nav__inner{
  max-width:var(--container);margin:0 auto;padding:18px 28px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  transition:.35s ease;
}
.nav.scrolled{backdrop-filter:blur(18px);background:rgba(6,9,18,.72);border-bottom:1px solid var(--border)}
.nav.scrolled .nav__inner{padding:12px 28px}
.nav__brand{display:flex;align-items:center;gap:12px}
.nav__logo{display:grid;place-items:center;filter:drop-shadow(0 0 10px rgba(45,226,200,.25))}
.nav__brandtext{display:flex;flex-direction:column;line-height:1.1}
.nav__cn{font-family:var(--font-display);font-weight:900;font-size:1.18rem;letter-spacing:.18em;text-shadow:0 0 28px rgba(45,226,200,.35),0 2px 6px rgba(0,0,0,.45)}
.nav__en{font-family:var(--font-mono);font-size:.66rem;color:var(--text-dim);letter-spacing:.18em;text-transform:uppercase}
.nav__links{display:flex;align-items:center;gap:6px}
.nav__link{
  font-size:.92rem;color:var(--text-dim);padding:8px 16px;border-radius:99px;
  transition:.25s ease;position:relative;
}
.nav__link:hover{color:var(--text);background:var(--surface)}
.nav__link.active{color:var(--cyan)}
.nav__cta{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.9rem;font-weight:500;color:var(--bg);
  background:var(--grad);padding:10px 20px;border-radius:99px;
  transition:.25s ease;box-shadow:0 8px 24px -8px rgba(45,226,200,.5);
}
.nav__cta:hover{transform:translateY(-2px);box-shadow:0 14px 30px -8px rgba(45,226,200,.65)}
.nav__toggle{display:none;flex-direction:column;gap:5px;padding:8px}
.nav__toggle span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:.3s}
.nav__toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav__toggle.open span:nth-child(2){opacity:0}
.nav__toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-display);font-weight:500;font-size:.95rem;
  padding:14px 26px;border-radius:99px;transition:.28s cubic-bezier(.4,0,.2,1);
  white-space:nowrap;
}
.btn--primary{color:var(--bg);background:var(--grad);box-shadow:0 10px 30px -10px rgba(45,226,200,.55)}
.btn--primary:hover{transform:translateY(-3px);box-shadow:0 18px 40px -12px rgba(45,226,200,.7)}
.btn--ghost{color:var(--text);border:1px solid var(--border-2);background:var(--surface)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(45,226,200,.06)}
.btn--lg{padding:17px 34px;font-size:1rem}

/* ---------- 章节头 ---------- */
.section-head{max-width:680px;margin-bottom:64px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:18px;
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--cyan);opacity:.6}
.section-title{
  font-family:var(--font-display);font-weight:700;font-size:clamp(1.7rem,3.6vw,2.6rem);
  line-height:1.25;letter-spacing:-.01em;margin-bottom:16px;
}
.section-desc{color:var(--text-dim);font-size:1.02rem;max-width:560px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

/* ---------- HERO ---------- */
.hero{position:relative;min-height:100vh;display:flex;flex-direction:column;justify-content:center;padding:140px 28px 60px;overflow:hidden}
.hero__network{position:absolute;inset:0;width:100%;height:100%;opacity:.7}
.hero__content{position:relative;max-width:var(--container);margin:0 auto;width:100%;z-index:2}
.hero__badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:8px 16px;border-radius:99px;border:1px solid var(--border-2);
  background:var(--surface);backdrop-filter:blur(8px);
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.16em;color:var(--text-dim);
  margin-bottom:30px;
}
.hero__dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.8)}}
.hero__title{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(2.4rem,6.4vw,5.2rem);line-height:1.08;letter-spacing:.06em;
  margin-bottom:28px;
  text-shadow:0 0 50px rgba(45,226,200,.18),0 4px 20px rgba(0,0,0,.55);
}
.hero__title span{display:block}
.hero__sub{font-size:clamp(1rem,1.4vw,1.16rem);color:var(--text-dim);max-width:600px;margin-bottom:40px}
.hero__actions{display:flex;gap:16px;flex-wrap:wrap}

.hero__stats{
  position:relative;z-index:2;max-width:var(--container);margin:72px auto 0;width:100%;
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--border);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;
}
.stat{background:var(--bg);padding:30px 26px;display:flex;flex-direction:column;gap:6px;position:relative;transition:.3s}
.stat:hover{background:var(--bg-2)}
.stat__num{font-family:var(--font-display);font-weight:700;font-size:clamp(1.8rem,3vw,2.4rem);line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat__plus{position:absolute;font-size:1.4rem;color:var(--cyan);font-weight:600;margin-left:calc(1ch + .1em)}
.stat__label{font-size:.86rem;color:var(--text-dim)}
.hero__scroll{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:10px;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.2em;color:var(--text-mute);text-transform:uppercase}
.hero__scrollline{width:1px;height:40px;background:linear-gradient(var(--cyan),transparent);animation:scrollLine 2s ease-in-out infinite}
@keyframes scrollLine{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---------- ABOUT ---------- */
.about{padding:110px 0;border-top:1px solid var(--border)}
.about__grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;margin-bottom:48px}
.about__title{font-family:var(--font-display);font-weight:700;font-size:clamp(1.6rem,3.2vw,2.4rem);line-height:1.3;letter-spacing:-.01em;margin-top:16px}
.about__body p{color:var(--text-dim);font-size:1.04rem;margin-bottom:18px}
.about__body p:last-child{margin-bottom:0}
.about__pills{display:flex;flex-wrap:wrap;gap:12px;padding-top:40px;border-top:1px solid var(--border)}
.pill{display:inline-flex;align-items:center;gap:9px;padding:9px 18px;border-radius:99px;border:1px solid var(--border-2);background:var(--surface);font-size:.88rem;color:var(--text-dim);transition:.25s}
.pill:hover{border-color:var(--cyan);color:var(--text)}
.pill__dot{width:6px;height:6px;border-radius:50%;background:var(--cyan)}

/* ---------- PRODUCTS ---------- */
.products{padding:110px 0}
.product{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:48px;border-radius:24px;margin-bottom:32px;position:relative;
  border:1px solid var(--border);background:linear-gradient(180deg,var(--bg-2),var(--bg));
  overflow:hidden;transition:.4s ease;
}
.product:hover{border-color:var(--border-2);transform:translateY(-4px)}
.product::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--accent-line,transparent)}
.product--cyan{--accent:var(--cyan);--accent-grad:var(--grad-cyan)}
.product--blue{--accent:var(--blue);--accent-grad:var(--grad-blue)}
.product--green{--accent:var(--green);--accent-grad:var(--grad-green)}
.product__visual{position:relative;order:1}
.product__info--right{order:1}
.product__info--right ~ .product__visual{order:2}
.product__card-glow{position:absolute;inset:-30%;background:radial-gradient(circle at 50% 40%,var(--accent),transparent 60%);opacity:.12;filter:blur(40px);pointer-events:none}
.product__mock{position:relative;z-index:1}

/* 产品标签 */
.product__tag{display:inline-block;font-family:var(--font-mono);font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.product__name{font-family:var(--font-display);font-weight:700;font-size:clamp(1.5rem,2.8vw,2.1rem);letter-spacing:-.01em;margin-bottom:14px}
.product__summary{color:var(--text-dim);font-size:1.05rem;margin-bottom:26px}
.product__features{display:flex;flex-direction:column;gap:14px;margin-bottom:26px}
.product__features li{display:flex;gap:13px;font-size:.96rem;color:var(--text-dim);line-height:1.6}
.product__features b{color:var(--text);font-weight:600}
.product__bullet{flex:none;width:8px;height:8px;border-radius:50%;background:var(--accent);margin-top:8px;box-shadow:0 0 10px var(--accent)}
.product__tags{display:flex;flex-wrap:wrap;gap:9px}
.product__tags span{font-family:var(--font-mono);font-size:.76rem;padding:6px 13px;border-radius:7px;border:1px solid var(--border-2);background:var(--surface);color:var(--text-dim)}

/* ---------- 产品模拟UI ---------- */
.mock{border:1px solid var(--border-2);border-radius:16px;overflow:hidden;background:var(--bg-3);box-shadow:var(--shadow)}
.mock__bar{display:flex;align-items:center;gap:6px;padding:13px 16px;border-bottom:1px solid var(--border);background:rgba(0,0,0,.2)}
.mock__bar span{width:10px;height:10px;border-radius:50%;background:var(--border-2)}
.mock__bar span:nth-child(1){background:#ff5f57}
.mock__bar span:nth-child(2){background:#febc2e}
.mock__bar span:nth-child(3){background:#28c840}
.mock__bar em{margin-left:auto;font-family:var(--font-mono);font-size:.74rem;color:var(--text-mute);font-style:normal}
.mock__body{padding:24px}

/* 教育模拟 */
.mock--edu .mock__body{display:flex;flex-direction:column;gap:20px}
.mock__play{width:54px;height:54px;border-radius:14px;background:var(--grad-cyan);display:grid;place-items:center;color:var(--bg);box-shadow:0 8px 24px -6px rgba(45,226,200,.5)}
.mock__meta b{display:block;font-size:1rem;font-weight:600;margin-bottom:4px}
.mock__meta i{font-size:.82rem;color:var(--text-dim);font-style:normal}
.mock__progress{height:5px;border-radius:99px;background:rgba(255,255,255,.08);margin-top:12px;overflow:hidden}
.mock__progress span{display:block;height:100%;background:var(--grad-cyan);border-radius:99px}
.mock__chips{display:flex;flex-wrap:wrap;gap:8px}
.mock__chips span{font-size:.76rem;padding:5px 11px;border-radius:7px;background:var(--surface-2);color:var(--text-dim)}

/* 智考通模拟 */
.mock--zhikao .mock__body{display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center}
.mock__q{display:flex;gap:10px;align-items:flex-start;margin-bottom:16px;grid-column:1/-1}
.mock__q b{color:var(--blue);font-family:var(--font-display)}
.mock__q span{font-size:.94rem;color:var(--text)}
.mock__opts{display:flex;flex-direction:column;gap:9px;grid-column:1}
.mock__opt{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:10px;border:1px solid var(--border);font-size:.88rem;color:var(--text-dim);transition:.2s}
.mock__opt i{width:22px;height:22px;border-radius:6px;background:var(--surface-2);display:grid;place-items:center;font-style:normal;font-family:var(--font-mono);font-size:.74rem}
.mock__opt--right{border-color:rgba(52,211,153,.4);background:rgba(52,211,153,.08);color:var(--text)}
.mock__opt--right i{background:var(--green);color:var(--bg)}
.mock__ring{position:relative;display:grid;place-items:center;grid-column:2}
.mock__ring em{position:absolute;text-align:center;font-family:var(--font-display);font-style:normal;font-weight:700;font-size:1.1rem;color:var(--text)}
.mock__ring em small{display:block;font-size:.6rem;font-weight:400;color:var(--text-dim)}

/* 新农村模拟 */
.mock--rural .mock__body--grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:18px}
.mock__tile{padding:16px;border-radius:12px;background:var(--surface);border:1px solid var(--border)}
.mock__tile b{display:block;font-size:.74rem;color:var(--text-mute);margin-bottom:8px;font-weight:500}
.mock__tile strong{font-family:var(--font-display);font-size:1.5rem;font-weight:700;color:var(--text);display:flex;align-items:baseline;gap:4px}
.mock__tile strong small{font-size:.72rem;font-weight:400;color:var(--text-dim)}
.mock__tile--wide{grid-column:1/-1}
.mock__trend{display:inline-block;font-family:var(--font-mono);font-size:.7rem;margin-top:8px}
.mock__trend.up{color:var(--green)}
.mock__trend.down{color:#f87171}
.mock__bars{display:flex;align-items:flex-end;gap:5px;height:34px;margin-top:10px}
.mock__bars span{flex:1;background:var(--grad-green);border-radius:3px;opacity:.8}

/* ---------- FEATURES ---------- */
.features{padding:110px 0;border-top:1px solid var(--border)}
.features__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature{padding:34px 30px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);transition:.35s ease;position:relative;overflow:hidden}
.feature::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 100% 0%,rgba(45,226,200,.08),transparent 50%);opacity:0;transition:.35s}
.feature:hover{border-color:var(--border-2);transform:translateY(-5px);background:var(--surface-2)}
.feature:hover::after{opacity:1}
.feature__icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:20px;color:var(--cyan);background:rgba(45,226,200,.1);border:1px solid rgba(45,226,200,.2)}
.feature h3{font-family:var(--font-display);font-size:1.18rem;font-weight:600;margin-bottom:10px}
.feature p{color:var(--text-dim);font-size:.94rem}

/* ---------- CTA BAND ---------- */
.cta-band{padding:40px 0}
.cta-band__inner{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:48px 56px;border-radius:24px;background:linear-gradient(120deg,rgba(45,226,200,.1),rgba(79,140,255,.08));border:1px solid var(--border-2);position:relative;overflow:hidden}
.cta-band__inner::before{content:"";position:absolute;top:-50%;right:-10%;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(45,226,200,.2),transparent 70%);filter:blur(40px)}
.cta-band h2{font-family:var(--font-display);font-size:clamp(1.4rem,2.6vw,2rem);font-weight:700;margin-bottom:8px;position:relative}
.cta-band p{color:var(--text-dim);position:relative}
.cta-band .btn{position:relative;flex:none}

/* ---------- CONTACT ---------- */
.contact{padding:110px 0 80px;border-top:1px solid var(--border)}
.contact__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.contact__card{display:flex;flex-direction:column;gap:8px;padding:38px 32px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);transition:.35s ease}
.contact__card:hover{border-color:var(--cyan);transform:translateY(-5px);background:rgba(45,226,200,.04)}
.contact__icon{width:50px;height:50px;border-radius:13px;display:grid;place-items:center;margin-bottom:14px;color:var(--cyan);background:rgba(45,226,200,.1);border:1px solid rgba(45,226,200,.2)}
.contact__label{font-size:.82rem;color:var(--text-mute);font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase}
.contact__value{font-family:var(--font-display);font-size:1.3rem;font-weight:600;letter-spacing:-.01em}
.contact__hint{font-size:.84rem;color:var(--text-dim);margin-top:4px}

/* ---------- FOOTER ---------- */
.footer{border-top:1px solid var(--border);background:var(--bg-2)}
.footer__inner{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:52px 28px;flex-wrap:wrap}
.footer__brand{display:flex;align-items:center;gap:14px}
.footer__brand strong{display:block;font-family:var(--font-display);font-size:1.05rem}
.footer__brand span{font-size:.84rem;color:var(--text-dim)}
.footer__nav{display:flex;gap:24px;flex-wrap:wrap}
.footer__nav a{font-size:.9rem;color:var(--text-dim);transition:.25s}
.footer__nav a:hover{color:var(--cyan)}
.footer__contact{display:flex;flex-direction:column;align-items:flex-end;gap:4px;font-size:.88rem}
.footer__contact a{color:var(--cyan)}
.footer__contact span{color:var(--text-dim)}
.footer__bottom{border-top:1px solid var(--border)}
.footer__bottom .container{display:flex;justify-content:space-between;gap:16px;padding:22px 28px;flex-wrap:wrap;font-size:.8rem;color:var(--text-mute)}

/* ---------- 滚动揭示 ---------- */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .8s cubic-bezier(.16,1,.3,1),transform .8s cubic-bezier(.16,1,.3,1);transition-delay:var(--d,0s)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .ambient__orb,.hero__scrollline,.hero__dot{animation:none}
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1024px){
  .hero__stats{grid-template-columns:repeat(2,1fr)}
  .features__grid{grid-template-columns:repeat(2,1fr)}
  .contact__grid{grid-template-columns:1fr}
  .about__grid{grid-template-columns:1fr;gap:32px}
  .product{grid-template-columns:1fr;gap:36px;padding:36px}
  .product__visual{order:1}
  .product__info{order:2}
  .product__info--right{order:2}
  .product__info--right ~ .product__visual{order:1}
  .cta-band__inner{flex-direction:column;align-items:flex-start;padding:40px}
}

@media (max-width:768px){
  .container{padding:0 20px}
  .nav__inner{padding:14px 20px}
  .nav__links{
    position:fixed;top:0;right:0;height:100vh;width:min(82%,340px);
    flex-direction:column;justify-content:center;align-items:flex-start;gap:8px;
    background:var(--bg-2);border-left:1px solid var(--border);
    padding:80px 32px;transform:translateX(100%);transition:.4s cubic-bezier(.4,0,.2,1);
    z-index:99;
  }
  .nav__links.open{transform:translateX(0)}
  .nav__link{font-size:1.1rem;padding:12px 18px;width:100%}
  .nav__cta{display:none}
  .nav__toggle{display:flex;z-index:101}
  .nav__toggle.open{position:relative;z-index:101}

  .hero{padding:120px 20px 80px}
  .hero__actions{flex-direction:column;align-items:stretch}
  .hero__actions .btn{justify-content:center}
  .hero__stats{margin-top:56px}
  .stat{padding:24px 20px}
  .hero__scroll{display:none}

  .about,.products,.features,.contact{padding:80px 0}
  .section-head{margin-bottom:44px}
  .product{padding:28px;margin-bottom:24px}
  .features__grid{grid-template-columns:1fr}
  .cta-band__inner{padding:32px;text-align:left}
  .footer__inner{flex-direction:column;align-items:flex-start;gap:24px}
  .footer__contact{align-items:flex-start}
  .footer__bottom .container{flex-direction:column}
}

@media (max-width:480px){
  .hero__stats{grid-template-columns:1fr}
  .mock__tile strong{font-size:1.2rem}
  .mock--zhikao .mock__body{grid-template-columns:1fr}
  .mock__ring{grid-column:1;justify-self:start}
}