/* 移动端优先的落地页样式 */
:root{
  --bg:#0b0d12;
  --card:#151922;
  --card-2:#1b2029;
  --line:rgba(255,255,255,.08);
  --text:#f2f4f8;
  --muted:#9aa3b2;
  --accent:#ff2e4d;
  --accent-2:#ff7a3d;
  --ok:#2fd48a;
  --radius:18px;
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.6;
  padding-bottom:88px;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
h1,h2,h3,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
b,strong{font-weight:700}

/* 顶部 */
.hero{
  position:relative;
  padding:28px 20px 8px;
  overflow:hidden;
}
.hero-glow{
  position:absolute;top:-140px;left:50%;transform:translateX(-50%);
  width:420px;height:320px;
  background:radial-gradient(circle at 50% 50%, rgba(255,46,77,.32), rgba(255,122,61,.12) 45%, transparent 70%);
  pointer-events:none;
}
.brand{display:flex;align-items:center;gap:10px;position:relative}
.brand-logo{
  width:38px;height:38px;border-radius:12px;flex:0 0 auto;
  display:grid;place-items:center;
  font-weight:800;font-size:19px;color:#fff;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  box-shadow:0 6px 18px rgba(255,46,77,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.3}
.brand-text strong{font-size:15px}
.brand-text span{font-size:12px;color:var(--muted)}

.hero-title{
  position:relative;
  margin-top:26px;
  font-size:27px;line-height:1.35;font-weight:800;letter-spacing:-.3px;
}
.hero-title em{
  font-style:normal;
  background:linear-gradient(120deg,var(--accent),var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:14px;color:var(--muted);font-size:14px}

.benefits{margin-top:10px;display:flex;flex-direction:column;gap:7px}
.benefits li{display:flex;align-items:center;gap:8px;font-size:14.5px;color:#dfe4ee}
.benefits i{
  width:18px;height:18px;border-radius:50%;flex:0 0 auto;
  display:grid;place-items:center;font-style:normal;font-size:11px;
  background:rgba(47,212,138,.15);color:var(--ok);
}

/* 通用卡片 */
main{padding:20px 16px 0;display:flex;flex-direction:column;gap:14px}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:18px;
}
.card h2{font-size:16px;margin-bottom:14px}

/* 二维码卡 */
.qr-card{
  background:linear-gradient(180deg,var(--card-2),var(--card));
  text-align:center;
  padding-top:16px;
}
.qr-head{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12.5px;color:var(--muted);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  padding:5px 12px;border-radius:999px;
}
.live-dot{
  width:7px;height:7px;border-radius:50%;background:var(--ok);
  box-shadow:0 0 0 0 rgba(47,212,138,.6);
  animation:pulse 2s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(47,212,138,.55)}
  70%{box-shadow:0 0 0 9px rgba(47,212,138,0)}
  100%{box-shadow:0 0 0 0 rgba(47,212,138,0)}
}

.qr-body{margin-top:16px;display:grid;place-items:center;min-height:252px}
.qr-loading{display:flex;flex-direction:column;align-items:center;gap:14px;color:var(--muted);font-size:13.5px}
.spinner{
  width:34px;height:34px;border-radius:50%;
  border:3px solid rgba(255,255,255,.12);
  border-top-color:var(--accent);
  animation:spin .9s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

.qr-wrap{
  position:relative;padding:10px;border-radius:16px;
  background:#fff;
  box-shadow:0 12px 32px rgba(0,0,0,.45);
  animation:pop .35s ease-out;
}
@keyframes pop{from{transform:scale(.92);opacity:0}to{transform:scale(1);opacity:1}}
.qr-wrap img{width:240px;height:240px;border-radius:8px;object-fit:contain;background:#fff}
.qr-mask{position:absolute;inset:0;border-radius:16px;pointer-events:none;
  box-shadow:inset 0 0 0 1px rgba(0,0,0,.06)}

.qr-error{display:flex;flex-direction:column;gap:12px;align-items:center;color:var(--muted);font-size:14px}
.btn-ghost{
  background:rgba(255,255,255,.06);color:var(--text);
  border:1px solid var(--line);border-radius:10px;
  padding:9px 18px;font-size:14px;cursor:pointer;
}

.qr-tip{margin-top:16px;font-size:13px;color:var(--muted)}
.qr-tip b{color:var(--accent)}
.qr-owner{margin-top:8px;font-size:12.5px;color:var(--muted)}
.qr-owner b{color:#dfe4ee}

/* 微信号兜底 */
.wx-fallback{
  margin-top:16px;display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);border-radius:12px;
  padding:10px 12px;
}
.wx-fallback span{font-size:12px;color:var(--muted);flex:0 0 auto}
.wx-fallback code{
  flex:1;text-align:left;font-family:ui-monospace,Menlo,Consolas,monospace;
  font-size:14px;color:#fff;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.btn-copy{
  flex:0 0 auto;background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;border:0;border-radius:8px;padding:6px 14px;font-size:13px;cursor:pointer;
}
.btn-copy:active{opacity:.8}

/* 信任 */
.trust-list{display:flex;flex-direction:column;gap:14px}
.trust-item{display:flex;align-items:flex-start;gap:14px}
.trust-num{
  flex:0 0 auto;min-width:64px;text-align:center;
  font-size:15px;font-weight:800;
  color:transparent;background:linear-gradient(120deg,var(--accent),var(--accent-2));
  -webkit-background-clip:text;background-clip:text;
}
.trust-item p{font-size:13.5px;color:var(--muted);margin:0}

/* 流程 */
.steps{display:flex;flex-direction:column;gap:16px}
.steps li{display:flex;gap:12px;align-items:flex-start}
.steps li>span{
  flex:0 0 auto;width:26px;height:26px;border-radius:9px;
  display:grid;place-items:center;font-size:13px;font-weight:700;
  background:rgba(255,46,77,.12);color:var(--accent);
  border:1px solid rgba(255,46,77,.25);
}
.steps strong{font-size:14.5px}
.steps p{font-size:13px;color:var(--muted);margin:2px 0 0}

/* FAQ */
.faq details{
  border-top:1px solid var(--line);padding:12px 0;
}
.faq details:first-of-type{border-top:0;padding-top:0}
.faq details:last-of-type{padding-bottom:0}
.faq summary{
  cursor:pointer;font-size:14px;font-weight:600;
  list-style:none;position:relative;padding-right:22px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:0;top:-2px;
  color:var(--muted);font-size:18px;transition:transform .2s;
}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin-top:8px;font-size:13px;color:var(--muted)}

.footnote{
  text-align:center;font-size:12px;color:#5f6878;
  padding:14px 0 6px;
}

/* 底部固定按钮 */
.bottom-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:20;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(11,13,18,.86);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
}
.btn-primary{
  width:100%;border:0;border-radius:14px;
  padding:14px;font-size:16px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  box-shadow:0 8px 22px rgba(255,46,77,.3);
  cursor:pointer;
  transition:transform .15s;
}
.btn-primary:active{transform:scale(.98)}

/* toast */
.toast{
  position:fixed;left:50%;bottom:96px;transform:translate(-50%,10px);
  background:rgba(30,34,42,.96);color:#fff;
  border:1px solid var(--line);
  padding:10px 18px;border-radius:12px;font-size:13.5px;
  opacity:0;pointer-events:none;transition:all .25s;z-index:50;
  max-width:80vw;text-align:center;
}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* 宽屏 */
@media (min-width:640px){
  body{max-width:520px;margin:0 auto;border-left:1px solid var(--line);border-right:1px solid var(--line);min-height:100vh}
  .bottom-bar{max-width:520px;left:50%;transform:translateX(-50%)}
}