/* 向日葵官网 · site.css
   主题色：向日葵红 #E03B2B / 深红 #B82A1F / 亮橙 #FF7A2E / 花瓣黄 #FFC94A
   背景：暖白 #FFFBF6 / 淡红 #FFF0EA
*/

:root{
  --brand:#E03B2B;
  --brand-dark:#B82A1F;
  --brand-2:#FF7A2E;
  --brand-3:#8A1E14;
  --accent:#FFC94A;
  --accent-2:#FFA826;
  --bg:#FFFBF6;
  --bg-soft:#FFF3EA;
  --bg-tint:#FFE4D3;
  --bg-hero1:#FFF5EC;
  --bg-hero2:#FFFAF3;
  --text:#2B1408;
  --text-2:#4B3221;
  --text-3:#8A6B52;
  --line:#F1DDD0;
  --line-2:#F7E8DC;
  --ok:#1FAB5C;
  --warn:#E03B2B;
  --danger:#D6352B;
  --baidu:#0468D7;
  --quark:#4A5AE8;
  --shadow-sm:0 2px 8px rgba(140,45,20,.08);
  --shadow-md:0 8px 24px rgba(140,45,20,.12);
  --shadow-lg:0 20px 60px rgba(140,45,20,.22);
  --radius:14px;
  --radius-lg:20px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-cn);color:var(--text);background:var(--bg);
  line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .15s ease}
a:hover{color:var(--brand)}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul,ol{list-style:none}

.wrap{max-width:1240px;margin:0 auto;padding:0 22px}
.sec{padding:88px 0}
.sec-tight{padding:56px 0}
.sec-soft{background:linear-gradient(180deg,#FFF5EC 0%,#FFFBF6 100%)}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(255,251,246,.86);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line-2);
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:66px;max-width:1240px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;color:var(--text)}
.brand .logo{
  width:34px;height:34px;border-radius:9px;flex:0 0 34px;overflow:hidden;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%);
  color:#fff;display:inline-flex;align-items:center;justify-content:center;
  font-weight:800;font-size:.78rem;letter-spacing:.02em;
  box-shadow:0 4px 10px rgba(224,59,43,.32);
}
.brand .logo svg{width:100%;height:100%}
.nav-main{display:flex;gap:2px;align-items:center}
.nav-main a{
  padding:8px 14px;border-radius:99px;font-size:.94rem;color:var(--text-2);font-weight:500;
  transition:all .2s ease;
}
.nav-main a:hover{color:var(--brand);background:var(--bg-tint)}
.nav-main a.is-active,.nav-main a.active{color:var(--brand);background:var(--bg-tint);font-weight:600}
.nav-toggle{display:none;padding:6px 8px;font-size:1.3rem;color:var(--text-2)}
.btn-cta{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%);
  color:#fff;padding:9px 20px;border-radius:10px;font-weight:700;font-size:.9rem;
  display:inline-flex;align-items:center;gap:8px;white-space:nowrap;
  box-shadow:0 6px 18px rgba(224,59,43,.32);
  transition:transform .18s ease,box-shadow .18s ease;
}
.btn-cta:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(224,59,43,.45);color:#fff}
.btn-ghost{
  background:#fff;color:var(--text);border:1.5px solid var(--line);padding:10px 20px;border-radius:10px;
  font-weight:600;font-size:.9rem;display:inline-flex;align-items:center;gap:8px;white-space:nowrap;
  transition:all .18s ease;
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}

/* ============ hero ============ */
.hero{
  padding:88px 0 80px;position:relative;overflow:hidden;
  background:
    radial-gradient(60% 50% at 12% 20%,rgba(255,122,46,.28) 0%,transparent 60%),
    radial-gradient(45% 40% at 92% 25%,rgba(224,59,43,.18) 0%,transparent 65%),
    linear-gradient(180deg,#FFF5EC 0%,#FFFBF6 100%);
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);
  padding:6px 14px;border-radius:99px;font-size:.82rem;color:var(--text-2);font-weight:600;
  box-shadow:var(--shadow-sm);
}
.hero-eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 3px rgba(224,59,43,.18)}
.hero h1{
  font-size:3.05rem;line-height:1.14;margin:18px 0 14px;
  font-weight:800;letter-spacing:-.5px;
}
.hero h1 .hl{
  background:linear-gradient(180deg,transparent 62%,rgba(255,201,74,.65) 62%);
  padding:0 4px;color:var(--brand-dark);
}
.hero .lead{font-size:1.08rem;color:var(--text-2);max-width:520px;margin-bottom:24px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:26px}
.hero-trust{display:flex;gap:22px;flex-wrap:wrap;color:var(--text-3);font-size:.88rem}
.hero-trust b{color:var(--text);font-weight:700}
.hero-trust .trust-item{display:flex;align-items:center;gap:6px}
.hero-trust .trust-item i{color:var(--brand)}

.hero-visual{position:relative}
.hero-visual .frame{
  background:linear-gradient(145deg,#fff 0%,#FFF6EE 100%);
  border:1px solid var(--line);border-radius:22px;padding:14px;box-shadow:var(--shadow-lg);
  position:relative;overflow:hidden;
}
.hero-visual .frame .bar{
  display:flex;gap:6px;padding:8px 4px 12px;align-items:center;
}
.hero-visual .frame .bar .b{width:9px;height:9px;border-radius:50%}
.hero-visual .frame .bar .b1{background:#E03B2B}.hero-visual .frame .bar .b2{background:#FFC94A}.hero-visual .frame .bar .b3{background:#82BD4A}
.hero-visual .frame .bar .txt{margin-left:8px;color:var(--text-3);font-size:.78rem}
.hero-visual .frame .content{
  background:linear-gradient(135deg,#fff 0%,#FFF5EC 100%);
  border-radius:14px;overflow:hidden;position:relative;
  aspect-ratio:16/10;border:1px solid var(--line);
}
.hero-visual .frame .content img{width:100%;height:100%;object-fit:cover}
.hero-visual .float-card{
  position:absolute;background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:10px 14px;box-shadow:var(--shadow-md);display:flex;align-items:center;gap:10px;font-size:.85rem;font-weight:600;
}
.hero-visual .fc-1{top:-14px;right:-10px}
.hero-visual .fc-2{bottom:-14px;left:-14px}
.hero-visual .float-card .ico{width:32px;height:32px;border-radius:8px;background:var(--bg-tint);display:flex;align-items:center;justify-content:center;color:var(--brand);font-weight:800}
.hero-visual .float-card .muted{color:var(--text-3);font-weight:500;font-size:.75rem}
.hero-visual .badge-new{
  position:absolute;top:-10px;left:-10px;
  background:linear-gradient(135deg,var(--accent) 0%,var(--accent-2) 100%);
  color:var(--text);font-size:.72rem;font-weight:700;padding:4px 10px;border-radius:99px;
  box-shadow:0 4px 12px rgba(255,168,38,.4);z-index:2;
}

/* ============ page-hero ============ */
.page-hero{
  padding:60px 0 40px;text-align:center;position:relative;
  background:linear-gradient(180deg,#FFF5EC 0%,#FFFBF6 100%);
  border-bottom:1px solid var(--line-2);
}
.page-hero .kicker{
  display:inline-block;font-size:.75rem;color:var(--brand);font-weight:700;letter-spacing:.16em;text-transform:uppercase;margin-bottom:10px;
}
.page-hero h1{font-size:2.2rem;font-weight:800;margin-bottom:10px;color:var(--text)}
.page-hero p{color:var(--text-2);max-width:720px;margin:0 auto;font-size:1rem}

/* ============ 通用 section ============ */
.sec-head{text-align:center;max-width:760px;margin:0 auto 44px}
.sec-head .kicker{
  display:inline-block;font-size:.75rem;color:var(--brand);font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;margin-bottom:8px;
}
.sec-head h2{font-size:2rem;font-weight:800;margin-bottom:12px;color:var(--text);letter-spacing:-.3px}
.sec-head p{color:var(--text-2);font-size:1rem}

/* ============ 平台下载卡片 ============ */
.plat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.plat-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;
  box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease;
  display:flex;flex-direction:column;
}
.plat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.plat-thumb{
  height:120px;border-radius:12px;background:linear-gradient(135deg,#FFF5EC,#FFE4D3);
  margin-bottom:14px;display:flex;align-items:center;justify-content:center;overflow:hidden;
  border:1px solid var(--line-2);
}
.plat-thumb img{width:88px;height:88px;object-fit:cover;border-radius:14px;box-shadow:0 6px 18px rgba(0,0,0,.14)}
.plat-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.plat-badge{
  width:34px;height:34px;border-radius:8px;flex:0 0 34px;display:flex;align-items:center;justify-content:center;
  background:var(--bg-tint);color:var(--brand);font-weight:800;
}
.plat-name{font-weight:700;font-size:1.05rem}
.plat-meta{color:var(--text-3);font-size:.8rem}
.plat-desc{color:var(--text-2);font-size:.9rem;margin-bottom:12px}
.plat-versions{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px}
.plat-versions span{background:var(--bg-soft);color:var(--text-2);font-size:.74rem;padding:3px 8px;border-radius:6px}
.dl-row{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:auto}
.dl-btn{
  padding:9px 12px;border-radius:9px;font-size:.82rem;font-weight:700;color:#fff;
  display:inline-flex;align-items:center;justify-content:center;gap:6px;transition:all .18s ease;
}
.dl-btn.quark{background:linear-gradient(135deg,#4A5AE8 0%,#6A7CF0 100%);box-shadow:0 4px 10px rgba(74,90,232,.3)}
.dl-btn.quark:hover{transform:translateY(-1px);box-shadow:0 6px 14px rgba(74,90,232,.42)}
.dl-btn.baidu{background:linear-gradient(135deg,#0468D7 0%,#1A82F0 100%);box-shadow:0 4px 10px rgba(4,104,215,.3)}
.dl-btn.baidu:hover{transform:translateY(-1px);box-shadow:0 6px 14px rgba(4,104,215,.42)}

/* ============ 功能 grid ============ */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;
  box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease;
}
.feat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.feat-thumb{height:180px;background:linear-gradient(135deg,#FFF5EC,#FFE4D3);overflow:hidden}
.feat-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.feat-card:hover .feat-thumb img{transform:scale(1.05)}
.feat-body{padding:20px}
.feat-body .fi{
  width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.2rem;margin-bottom:12px;
  box-shadow:0 4px 12px rgba(224,59,43,.3);
}
.feat-body h3{font-size:1.15rem;font-weight:700;margin-bottom:8px}
.feat-body p{color:var(--text-2);font-size:.92rem;line-height:1.65}

/* ============ 数字 ============ */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px 22px;text-align:center;
  box-shadow:var(--shadow-sm);position:relative;overflow:hidden;
}
.stat-card::before{
  content:"";position:absolute;top:-30px;right:-30px;width:100px;height:100px;
  background:radial-gradient(circle,rgba(255,201,74,.35),transparent 70%);border-radius:50%;
}
.stat-num{font-size:2.4rem;font-weight:800;color:var(--brand);letter-spacing:-.5px;line-height:1}
.stat-lbl{color:var(--text-2);margin-top:8px;font-size:.92rem}

/* ============ 场景卡 ============ */
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.scene-card{
  border-radius:18px;overflow:hidden;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
}
.scene-thumb{height:220px;overflow:hidden;position:relative}
.scene-thumb img{width:100%;height:100%;object-fit:cover}
.scene-tag{
  position:absolute;top:12px;left:12px;background:rgba(255,255,255,.95);color:var(--brand);
  padding:5px 12px;border-radius:99px;font-size:.75rem;font-weight:700;box-shadow:var(--shadow-sm);
}
.scene-body{padding:22px}
.scene-body h3{font-size:1.2rem;font-weight:700;margin-bottom:8px}
.scene-body p{color:var(--text-2);font-size:.92rem}

/* ============ 教程步骤 ============ */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step}
.step-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;position:relative;
  box-shadow:var(--shadow-sm);
}
.step-num{
  position:absolute;top:-14px;left:20px;background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%);
  color:#fff;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-weight:800;box-shadow:0 4px 12px rgba(224,59,43,.32);
}
.step-thumb{height:160px;border-radius:12px;overflow:hidden;background:var(--bg-soft);margin-bottom:14px}
.step-thumb img{width:100%;height:100%;object-fit:cover}
.step-card h3{font-size:1.1rem;font-weight:700;margin-bottom:8px}
.step-card p{color:var(--text-2);font-size:.92rem}

/* ============ 价格 ============ */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px 24px;
  box-shadow:var(--shadow-sm);display:flex;flex-direction:column;position:relative;
}
.price-card.featured{border-color:var(--brand);box-shadow:0 12px 32px rgba(224,59,43,.16);transform:translateY(-6px)}
.price-card .tag{
  position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%);color:#fff;
  padding:4px 14px;border-radius:99px;font-size:.74rem;font-weight:700;
}
.price-card h3{font-size:1.15rem;font-weight:700;margin-bottom:4px}
.price-card .sub{color:var(--text-3);font-size:.86rem;margin-bottom:16px}
.price-num{font-size:2.4rem;font-weight:800;color:var(--brand);letter-spacing:-.5px;line-height:1}
.price-num .cur{font-size:1.1rem;font-weight:600;color:var(--text-2);margin-right:2px}
.price-num .unit{font-size:.9rem;color:var(--text-3);font-weight:500;margin-left:4px}
.price-list{margin:20px 0 22px;padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.price-list li{padding:6px 0;color:var(--text-2);font-size:.9rem;display:flex;align-items:flex-start;gap:8px}
.price-list li i{color:var(--ok);margin-top:3px;font-size:.75rem}
.price-card .btn-cta{width:100%;justify-content:center;margin-top:auto}

/* ============ FAQ ============ */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden;
  box-shadow:var(--shadow-sm);
}
.faq-q{
  padding:16px 20px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;
  font-weight:600;font-size:1rem;gap:12px;
}
.faq-q .ico{color:var(--brand);font-size:.8rem;transition:transform .2s ease}
.faq-item.open .faq-q .ico{transform:rotate(45deg)}
.faq-a{padding:0 20px;max-height:0;overflow:hidden;transition:max-height .25s ease,padding .2s ease;color:var(--text-2);font-size:.94rem}
.faq-item.open .faq-a{padding:0 20px 18px;max-height:400px}

/* ============ 关于我们 ============ */
.about-hero{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.about-text h2{font-size:1.8rem;margin-bottom:16px;font-weight:800}
.about-text p{color:var(--text-2);margin-bottom:14px;font-size:1rem}
.about-facts{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px}
.about-fact{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;box-shadow:var(--shadow-sm)}
.about-fact .k{color:var(--brand);font-size:1.6rem;font-weight:800;line-height:1}
.about-fact .v{color:var(--text-3);font-size:.85rem;margin-top:6px}

/* ============ footer ============ */
.site-footer{
  background:linear-gradient(180deg,#2B1408 0%,#1A0A04 100%);color:#E6CFC1;padding:64px 0 28px;margin-top:64px;
}
.site-footer .wrap{max-width:1240px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;margin-bottom:36px}
.footer-brand{display:flex;flex-direction:column;gap:12px}
.footer-brand .brand{color:#fff}
.footer-brand .brand .logo{background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%)}
.footer-brand p{color:#B8A08E;font-size:.9rem;line-height:1.7}
.footer-col h4{color:#fff;font-size:.98rem;font-weight:700;margin-bottom:12px}
.footer-col a{display:block;color:#B8A08E;font-size:.9rem;padding:5px 0;transition:color .15s ease}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding-top:20px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:#8A7260;font-size:.82rem;
}
.footer-bottom a{color:#8A7260}
.footer-bottom a:hover{color:var(--accent)}
.footer-bottom .disclaimer{max-width:820px;font-size:.76rem;line-height:1.7;color:#8A7260}

/* ============ 提示条 ============ */
.alert-strip{
  display:flex;align-items:flex-start;gap:12px;padding:14px 18px;border-radius:12px;margin-bottom:24px;
  background:linear-gradient(90deg,#FFF3EA 0%,#FFE4D3 100%);border:1px solid #F5D3B4;
}
.alert-strip .a-ico{
  width:32px;height:32px;border-radius:8px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;flex:0 0 32px;
}
.alert-strip .a-body{color:var(--text-2);font-size:.92rem}
.alert-strip b{color:var(--brand-dark)}

.breadcrumb{display:flex;align-items:center;gap:8px;color:var(--text-3);font-size:.86rem;margin-bottom:16px}
.breadcrumb .sep{opacity:.5}
.breadcrumb .cur{color:var(--text)}
.breadcrumb a:hover{color:var(--brand)}

/* ============ 下载弹窗 ============ */
.modal-overlay{
  position:fixed;inset:0;background:rgba(43,20,8,.65);backdrop-filter:blur(6px);
  display:none;align-items:center;justify-content:center;z-index:9999;padding:20px;
}
.modal-overlay.open{display:flex;animation:fadeIn .2s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal{
  background:#fff;border-radius:20px;max-width:440px;width:100%;padding:32px 28px;
  box-shadow:0 30px 80px rgba(0,0,0,.35);position:relative;animation:slideUp .25s ease;
}
@keyframes slideUp{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}
.modal-close{
  position:absolute;top:14px;right:14px;width:32px;height:32px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;color:var(--text-3);
  transition:all .15s ease;background:var(--bg-soft);
}
.modal-close:hover{background:var(--bg-tint);color:var(--brand)}
.modal-title{text-align:center;margin-bottom:18px}
.modal-title .ver{color:var(--brand);font-size:.8rem;font-weight:600;margin-bottom:6px}
.modal-title h3{font-size:1.2rem;font-weight:700;color:var(--text)}
.qr-frame{
  padding:14px;border-radius:14px;background:linear-gradient(135deg,#FFF5EC 0%,#FFE4D3 100%);
  display:inline-block;margin:0 auto;position:relative;
}
.qr-frame.quark{box-shadow:0 0 0 3px rgba(74,90,232,.2),0 8px 24px rgba(74,90,232,.2)}
.qr-frame.baidu{box-shadow:0 0 0 3px rgba(4,104,215,.2),0 8px 24px rgba(4,104,215,.2)}
.qr-frame img{
  width:200px;height:200px;border-radius:10px;background:#fff;padding:8px;box-shadow:0 2px 8px rgba(0,0,0,.06);
  animation:qrBreath 2.4s ease-in-out infinite;
}
@keyframes qrBreath{
  0%,100%{transform:scale(1);filter:brightness(1)}
  50%{transform:scale(1.03);filter:brightness(1.05)}
}
.qr-hint{margin-top:16px;text-align:center;color:var(--text-2);font-size:.92rem;line-height:1.65}
.qr-hint .quark-mark{color:var(--quark);font-weight:700}
.qr-hint .baidu-mark{color:var(--baidu);font-weight:700}
.modal-steps{
  margin-top:14px;padding:14px 16px;background:var(--bg-soft);border-radius:10px;
  font-size:.85rem;color:var(--text-2);line-height:1.75;
}
.modal-steps .step-n{
  display:inline-flex;width:22px;height:22px;border-radius:50%;background:var(--brand);color:#fff;
  font-size:.72rem;font-weight:800;justify-content:center;align-items:center;margin-right:6px;vertical-align:-4px;
}
.modal-warn{
  margin-top:12px;padding:10px 14px;background:rgba(224,59,43,.06);border-left:3px solid var(--brand);
  border-radius:6px;color:var(--text-2);font-size:.82rem;line-height:1.65;
}

/* 二维码呼吸边框（页面上的静态二维码） */
.qrcode-container{
  padding:12px;border-radius:14px;background:linear-gradient(135deg,#FFF5EC 0%,#FFE4D3 100%);
  display:inline-block;position:relative;
}
.qrcode-container.qc-quark{box-shadow:0 0 0 3px rgba(74,90,232,.2),0 8px 20px rgba(74,90,232,.16)}
.qrcode-container.qc-baidu{box-shadow:0 0 0 3px rgba(4,104,215,.2),0 8px 20px rgba(4,104,215,.16)}
.qrcode-container img{
  width:140px;height:140px;border-radius:8px;background:#fff;padding:6px;box-shadow:0 2px 8px rgba(0,0,0,.06);
  animation:qrBreath 2.4s ease-in-out infinite;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:2.4rem}
  .plat-grid{grid-template-columns:repeat(2,1fr)}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:1fr}
  .price-grid{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr}
  .about-hero{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .stats-row{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  .nav-main{display:none;position:absolute;top:66px;left:0;right:0;background:#fff;flex-direction:column;padding:10px 20px;border-bottom:1px solid var(--line);gap:0}
  .nav-main.show{display:flex}
  .nav-main a{border-radius:8px;padding:12px 14px}
  .nav-toggle{display:block}
  .btn-cta{padding:8px 14px;font-size:.82rem}
  .brand span:not(.logo){font-size:1rem}
  .sec{padding:60px 0}
  .hero{padding:60px 0 50px}
  .hero h1{font-size:1.9rem}
  .page-hero h1{font-size:1.7rem}
  .plat-grid{grid-template-columns:1fr}
  .feat-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .modal{padding:24px 20px}
}