:root{
  --bg:#0b0e1a; --card:rgba(255,255,255,.045); --line:rgba(255,255,255,.09);
  --txt:#e8edf7; --mut:#97a2ba; --p1:#6366f1; --p2:#22d3ee;
  --ok:#34d399; --warn:#fbbf24; --bad:#f87171;
}
*{box-sizing:border-box;margin:0;padding:0}
/* [KSN-FONT 2026-08-02] 字体族：英文/数字 Caveat 手写潦草风（用户指定），中文思源宋体 */
body{font-family:'Noto Serif SC','Caveat',system-ui,-apple-system,'Segoe UI',Roboto,'PingFang SC','Microsoft YaHei',serif;
  background:radial-gradient(1100px 560px at 72% -12%,rgba(99,102,241,.20),transparent 60%),
             radial-gradient(900px 500px at 0% 0%,rgba(34,211,238,.12),transparent 55%),var(--bg);
  color:var(--txt);min-height:100vh;line-height:1.6;-webkit-font-smoothing:antialiased}
/* [KSN-GOLD 2026-08-02] 开通后：所有文字变金色（body.golden 时生效） */
body.golden{color:#f5e3b8}
body.golden .mut,body.golden .small,body.golden .kv,body.golden p{color:#e8d5a0}
body.golden a,body.golden .navlinks a{color:#f0dc9c}
body.golden .navlinks a:hover{color:#ffedb0}
body.golden .card{background:rgba(60,42,8,.10);border-color:rgba(251,191,36,.28)}
body.golden .sec-head h2,body.golden .hero h1,body.golden .hero .grad{
  background:linear-gradient(90deg,#f6d365,#fbbf24 30%,#fde68a 50%,#f59e0b 70%,#f6d365);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  animation:ksnGoldShine 3.2s linear infinite}
body.golden input{color:#f5e3b8;border-color:rgba(251,191,36,.35);background:rgba(251,191,36,.05)}
body.golden .logo{filter:drop-shadow(0 0 8px rgba(251,191,36,.6))}
/* 数字/英文/价格/按钮用 Caveat 手写体突出个性 */
.price,.amt,.logo,.hero h1,.sec-head h2,.stats b,.kv b,.plan .name,.dhead .logo{font-family:'Caveat','Noto Serif SC',serif}
.logo{font-weight:800;font-size:20px;letter-spacing:.3px}
/* [KSN-GOLD 2026-08-02] KSN 机场 logo 金光闪烁动画 */
.logo{position:relative;
  background:linear-gradient(90deg,#f6d365 0%,#fda085 20%,#fbbf24 40%,#fde68a 55%,#f59e0b 75%,#f6d365 100%);
  background-size:200% auto;-webkit-background-clip:text;background-clip:text;color:transparent;
  animation:ksnGoldShine 3.2s linear infinite;
  filter:drop-shadow(0 0 6px rgba(251,191,36,.45))}
@keyframes ksnGoldShine{
  0%{background-position:0% center}
  100%{background-position:200% center}
}
a{color:inherit;text-decoration:none}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.grad{background:linear-gradient(90deg,var(--p1),var(--p2));-webkit-background-clip:text;background-clip:text;color:transparent}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:12px;border:1px solid rgba(255,255,255,.22);
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(255,255,255,.10),rgba(255,255,255,.04));
  color:var(--txt);cursor:pointer;font-size:14px;font-weight:600;transition:.18s;
  backdrop-filter:blur(12px) saturate(150%);-webkit-backdrop-filter:blur(12px) saturate(150%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.18),inset 0 -1px 0 rgba(255,255,255,.04),0 6px 20px rgba(0,0,0,.25)}
.btn::after{ /* 顶部内高光细线（玻璃厚度感） */
  content:'';position:absolute;left:10%;right:10%;top:1px;height:1px;border-radius:99px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);pointer-events:none}
.btn:hover{border-color:rgba(160,170,255,.55);transform:translateY(-1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.28),inset 0 -1px 0 rgba(255,255,255,.06),0 10px 28px rgba(0,0,0,.32)}
.btn.primary{background:linear-gradient(135deg,rgba(99,102,241,.5),rgba(34,211,238,.32) 55%,rgba(255,255,255,.10));border:1px solid rgba(148,163,255,.5);color:#fff;text-shadow:0 1px 6px rgba(0,0,0,.3);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.4),inset 0 -1px 0 rgba(255,255,255,.08),0 8px 28px rgba(99,102,241,.35)}
.btn.primary:hover{border-color:rgba(165,180,255,.72);box-shadow:inset 0 1px 0 rgba(255,255,255,.5),inset 0 -1px 0 rgba(255,255,255,.1),0 12px 36px rgba(99,102,241,.45)}
.btn.ghost{background:rgba(255,255,255,.04);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.btn.lg{padding:14px 28px;font-size:15px}
.btn.block{width:100%}
/* [KSN-LG 2026-08-02] Liquid Glass 液态玻璃按钮（苹果 WWDC25 风格：磨砂透光 + 边缘高光 + 浮动阴影） */
.btn.liquid{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(255,255,255,.18),rgba(255,255,255,.07) 45%,rgba(255,255,255,.03));
  backdrop-filter:blur(18px) saturate(180%);
  -webkit-backdrop-filter:blur(18px) saturate(180%);
  border:1px solid rgba(255,255,255,.30);
  color:#fff;text-shadow:0 1px 8px rgba(0,0,0,.45);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.38),
    inset 0 -1px 0 rgba(255,255,255,.08),
    inset 0 0 22px rgba(255,255,255,.05),
    0 10px 34px rgba(0,0,0,.38);
  transition:transform .25s,box-shadow .25s,background .25s,border-color .25s;
}
.btn.liquid::before{ /* 边缘折射高光弧 */
  content:'';position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:
    radial-gradient(120% 90% at 12% 0%,rgba(255,255,255,.30),transparent 42%),
    radial-gradient(90% 70% at 88% 100%,rgba(255,255,255,.12),transparent 45%);
  opacity:.9;
}
.btn.liquid::after{ /* 顶部内高光细线（玻璃厚度感） */
  content:'';position:absolute;left:8%;right:8%;top:1px;height:1px;border-radius:99px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.55),transparent);
  pointer-events:none;
}
.btn.liquid:hover{
  transform:translateY(-2px);
  background:linear-gradient(135deg,rgba(255,255,255,.26),rgba(255,255,255,.12) 45%,rgba(255,255,255,.05));
  border-color:rgba(255,255,255,.48);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.5),
    inset 0 -1px 0 rgba(255,255,255,.1),
    inset 0 0 30px rgba(255,255,255,.08),
    0 16px 48px rgba(0,0,0,.48);
}
.btn.liquid:active{transform:translateY(0) scale(.97)}
.btn.liquid.glow{ /* 高亮版（主 CTA）：彩色液态光晕 */
  background:linear-gradient(135deg,rgba(99,102,241,.38),rgba(34,211,238,.20) 50%,rgba(255,255,255,.08));
  border-color:rgba(148,163,255,.55);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.45),
    inset 0 -1px 0 rgba(255,255,255,.1),
    0 10px 40px rgba(99,102,241,.35);
}
.btn.liquid.glow:hover{
  background:linear-gradient(135deg,rgba(99,102,241,.5),rgba(34,211,238,.28) 50%,rgba(255,255,255,.1));
  border-color:rgba(165,180,255,.7);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.55),
    inset 0 -1px 0 rgba(255,255,255,.12),
    0 16px 54px rgba(99,102,241,.45);
}
input,select{width:100%;padding:12px 14px;border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--txt);font-size:14px;outline:none}
input:focus{border-color:var(--p1)}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;backdrop-filter:blur(10px)}
.mut{color:var(--mut)}
.small{font-size:13px}
.row{display:flex;gap:12px;flex-wrap:wrap}
.row.center{justify-content:center}
.grid{display:grid;gap:16px}
.hide{display:none!important}

/* 导航 */
.nav{position:sticky;top:0;z-index:30;backdrop-filter:blur(14px);background:rgba(11,14,26,.6);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:64px}
.navlinks{display:flex;gap:22px;align-items:center}
.navlinks a{color:var(--mut);font-size:14px;font-weight:500}
.navlinks a:hover{color:var(--txt)}
.navbtn{padding:8px 16px;border:1px solid var(--line);border-radius:999px;color:var(--txt)!important}
.navbtn:hover{border-color:rgba(99,102,241,.6)}

/* 落地页 */
/* [KSN-BG 2026-08-02] 全屏全局视频背景：fixed 铺满视口，所有内容滚动其上 */
.site-bg-video{position:fixed;top:0;left:0;width:100vw;height:100vh;object-fit:cover;z-index:-2;pointer-events:none}
.site-bg-mask{position:fixed;top:0;left:0;width:100vw;height:100vh;z-index:-1;pointer-events:none;
  background:linear-gradient(180deg,rgba(11,14,26,.78) 0%,rgba(11,14,26,.62) 40%,rgba(11,14,26,.80) 75%,rgba(11,14,26,.94) 100%)}
.hero{position:relative;padding:72px 0 40px;text-align:center}
.hero-tag{display:inline-block;font-size:12.5px;color:var(--mut);border:1px solid var(--line);padding:6px 14px;border-radius:999px;background:var(--card);margin-bottom:22px;backdrop-filter:blur(6px)}
.hero h1{font-size:46px;line-height:1.15;font-weight:800;margin-bottom:16px;text-shadow:0 2px 24px rgba(0,0,0,.6)}
.hero p{color:var(--mut);font-size:17px;max-width:660px;margin:0 auto 28px;text-shadow:0 1px 12px rgba(0,0,0,.7)}
.hero-stats{display:flex;gap:40px;justify-content:center;margin-top:42px;flex-wrap:wrap}
.hero-stats div{display:flex;flex-direction:column}
.hero-stats b{font-size:30px;font-weight:800;background:linear-gradient(90deg,var(--p1),var(--p2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-stats span{font-size:13px;color:var(--mut)}

/* 区块标题 */
.section{padding:48px 0}
.sec-head{text-align:center;margin-bottom:34px}
.sec-head h2{font-size:30px;font-weight:800;text-shadow:0 2px 16px rgba(0,0,0,.6)}
.sec-head .sub{color:var(--mut);margin-top:8px;text-shadow:0 1px 10px rgba(0,0,0,.6)}
.hint{text-align:center;color:var(--mut);font-size:13px;margin-top:18px}

/* 套餐 */
.plans{grid-template-columns:repeat(4,1fr)}
.plan{position:relative;display:flex;flex-direction:column;gap:10px}
.plan .name{font-size:18px;font-weight:700}
.plan .price{font-size:34px;font-weight:800}.plan .price small{font-size:15px;color:var(--mut);font-weight:500}
.plan ul{list-style:none;display:flex;flex-direction:column;gap:8px;margin:8px 0;font-size:14px;color:var(--mut)}
.plan li::before{content:'✓';color:var(--ok);margin-right:8px;font-weight:700}
.plan .feat{margin-top:auto}
.plan.hot{border-color:rgba(99,102,241,.55);box-shadow:0 0 0 1px rgba(99,102,241,.25),0 20px 50px -30px rgba(99,102,241,.6)}
.tag{position:absolute;top:-11px;right:18px;background:linear-gradient(90deg,var(--p1),var(--p2));color:#06121f;font-size:11px;font-weight:800;padding:4px 10px;border-radius:999px}

/* 特性 / 节点 */
.feats{grid-template-columns:repeat(3,1fr)}
.feat{padding:22px;border:1px solid var(--line);border-radius:16px;background:var(--card);backdrop-filter:blur(10px)}
.feat .ico{font-size:24px;margin-bottom:8px}
.feat h3{font-size:16px;margin-bottom:4px}
.nodes{grid-template-columns:repeat(4,1fr)}
.node{display:flex;align-items:center;gap:12px}
.node .flag{font-size:26px}
.node .meta b{display:block;font-size:15px}

/* 客户端 */
.clients{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.client{display:flex;align-items:center;gap:10px;padding:16px;border:1px solid var(--line);border-radius:14px;background:var(--card);font-size:14px;font-weight:500}

/* FAQ */
.faq{display:flex;flex-direction:column;gap:12px;max-width:760px;margin:0 auto}
.faq details{border:1px solid var(--line);border-radius:14px;background:var(--card);padding:4px 18px}
.faq summary{cursor:pointer;font-weight:600;padding:12px 0;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq p{padding:0 0 14px;color:var(--mut);font-size:14px}

/* 页脚 */
.foot{text-align:center;color:var(--mut);padding:40px 0;font-size:13px;border-top:1px solid var(--line);margin-top:20px}

/* 仪表盘 */
.dash{display:none;padding:30px 0 80px}
.dhead{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;flex-wrap:wrap;gap:12px}
.stats{grid-template-columns:repeat(4,1fr);margin-bottom:22px}
.stat{display:flex;flex-direction:column;gap:4px}
.stat .v{font-size:26px;font-weight:800}
.stat .k{font-size:13px;color:var(--mut)}
.dgrid{grid-template-columns:1.4fr 1fr;align-items:start}
.subbox{display:flex;flex-direction:column;gap:14px}
/* [KSN-GOLD 2026-08-02] 开通后订阅盒 → 金色高科技奢侈版 */
.subbox.golden{
  position:relative;
  background:linear-gradient(145deg,rgba(60,40,8,.72),rgba(20,16,30,.85) 55%,rgba(50,34,6,.7));
  border:1px solid rgba(251,191,36,.55);
  box-shadow:
    inset 0 1px 0 rgba(255,215,120,.35),
    inset 0 0 44px rgba(251,191,36,.10),
    0 0 30px rgba(251,191,36,.18),
    0 14px 44px rgba(0,0,0,.45);
}
.subbox.golden::before{ /* 金色边缘流动光带 */
  content:'';position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(115deg,transparent 20%,rgba(251,191,36,.28) 40%,transparent 55%);
  background-size:250% 100%;animation:goldBorderFlow 5s linear infinite;
}
@keyframes goldBorderFlow{0%{background-position:120% 0}100%{background-position:-120% 0}}
.subbox.golden h3{
  background:linear-gradient(90deg,#f6d365,#fbbf24 30%,#fde68a 50%,#f59e0b 70%,#f6d365);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  animation:ksnGoldShine 3.2s linear infinite;
}
.subbox.golden .subrow input{
  border-color:rgba(251,191,36,.4);
  background:rgba(251,191,36,.06);
  color:#fde68a;
}
.subbox.golden .oneclick{
  border-color:rgba(251,191,36,.45);
  background:linear-gradient(135deg,rgba(251,191,36,.22),rgba(180,130,20,.12));
  color:#fde68a;
}
.subbox.golden .oneclick:hover{border-color:rgba(251,191,36,.75);box-shadow:0 0 18px rgba(251,191,36,.3)}
.subrow{display:flex;gap:10px;align-items:center}
.subrow input{font-family:monospace;font-size:13px;color:var(--mut)}
.subrow .btn{padding:10px 14px;white-space:nowrap}
.prog{height:12px;border-radius:999px;background:#2a2f3e;overflow:hidden;border:1px solid rgba(255,255,255,.08)}
.prog>i{display:block;height:100%;background:linear-gradient(90deg,var(--p1),var(--p2));transition:width .5s ease;min-width:2px}
.kv{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--line);font-size:14px}
.kv:last-child{border:none}

/* 邮箱验证横幅 */
.verify-banner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  background:linear-gradient(90deg,rgba(99,102,241,.14),rgba(34,211,238,.10));border:1px solid rgba(99,102,241,.4);
  border-radius:16px;padding:16px 20px;margin-bottom:18px}
.vb-text{display:flex;flex-direction:column;gap:2px}
.vb-text b{font-size:15px}
.vb-act{display:flex;gap:10px;align-items:center}
.vb-act input{width:160px;letter-spacing:4px;text-align:center}
.verify-ok{text-align:center;color:var(--ok);font-weight:700;background:rgba(52,211,153,.1);border:1px solid rgba(52,211,153,.4);border-radius:12px;padding:12px;margin-bottom:18px}

/* 模态框 */
.modal{position:fixed;inset:0;background:rgba(4,6,14,.72);backdrop-filter:blur(6px);display:none;align-items:flex-start;justify-content:center;padding:20px;z-index:50;overflow-y:auto;-webkit-overflow-scrolling:touch}
.modal.open{display:flex}
.mbox{width:100%;max-width:420px;position:relative;margin:auto;max-height:calc(100dvh - 40px);overflow-y:auto;-webkit-overflow-scrolling:touch}
.modal-x{position:absolute;top:14px;right:16px;background:none;border:none;color:var(--mut);font-size:24px;cursor:pointer;line-height:1}
.tabs{display:flex;gap:8px;margin-bottom:18px}
.tab{flex:1;text-align:center;padding:10px;border-radius:10px;cursor:pointer;color:var(--mut);border:1px solid var(--line);font-weight:600;font-size:14px}
.tab.active{background:var(--card);color:var(--txt);border-color:rgba(99,102,241,.5)}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;color:var(--mut);margin-bottom:6px}
.msg{font-size:13px;margin-top:10px;min-height:18px}
.msg.err{color:var(--bad)}.msg.ok{color:var(--ok)}

@media(max-width:860px){
  .hero h1{font-size:34px}
  .plans,.feats,.nodes{grid-template-columns:repeat(2,1fr)}
  .clients{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .dgrid{grid-template-columns:1fr}
  .navlinks a:not(.navbtn){display:none}
}
@media(max-width:520px){
  .plans,.feats,.nodes,.clients,.stats{grid-template-columns:1fr}
  .hero-stats{gap:24px}
}

/* 在线客服聊天窗口（跟随弹窗内布局，不遮挡视线） */
.cs-chat-box{
  position:relative;width:100%;margin-top:10px;
  background:rgba(11,14,26,.95);border:1px solid var(--line);
  border-radius:16px;box-shadow:0 10px 40px rgba(0,0,0,.5);
  overflow:hidden;z-index:100;transition:all .3s ease;
  backdrop-filter:blur(10px);
}
/* 最小化：缩成 52px 悬浮球，只显示头像，不挡视线 */
.cs-chat-box.minimized{
  position:fixed;bottom:80px;right:20px;width:52px;height:52px;
  border-radius:50%;margin:0;cursor:pointer;
  box-shadow:0 6px 24px rgba(99,102,241,.45);
}
.cs-chat-box.minimized .cs-header{
  padding:0;height:52px;justify-content:center;border-bottom:none;
  background:linear-gradient(135deg,#6366f1,#22d3ee);
}
.cs-chat-box.minimized .cs-avatar{font-size:26px}
.cs-chat-box.minimized .cs-info,
.cs-chat-box.minimized .cs-messages,
.cs-chat-box.minimized .cs-typing,
.cs-chat-box.minimized .cs-minimize{display:none}
.cs-header{
  display:flex;align-items:center;gap:10px;
  padding:12px 16px;
  background:linear-gradient(90deg,rgba(99,102,241,.2),rgba(34,211,238,.15));
  border-bottom:1px solid var(--line);
}
.cs-avatar{font-size:24px;flex-shrink:0}
.cs-info{flex:1;min-width:0}
.cs-name{font-size:14px;font-weight:700;color:var(--txt)}
.cs-code{font-size:11px;color:var(--mut);margin-top:2px;font-family:monospace;word-break:break-all}
.cs-minimize{
  background:none;border:none;color:var(--mut);
  font-size:20px;cursor:pointer;padding:4px 8px;
  border-radius:6px;transition:all .15s;
}
.cs-minimize:hover{background:rgba(255,255,255,.1);color:var(--txt)}
.cs-messages{
  padding:12px;max-height:280px;overflow-y:auto;
  display:flex;flex-direction:column;gap:8px;
}
.cs-msg{display:flex;flex-direction:column;gap:4px}
.cs-bubble{
  padding:10px 14px;border-radius:12px;
  font-size:13px;line-height:1.5;
  max-width:85%;word-break:break-word;
}
.cs-msg-system .cs-bubble{
  background:rgba(99,102,241,.2);border:1px solid rgba(99,102,241,.3);
  color:var(--txt);
}
.cs-msg-success .cs-bubble{
  background:rgba(52,211,153,.15);border:1px solid rgba(52,211,153,.3);
  color:var(--ok);
}
.cs-msg-fail .cs-bubble{
  background:rgba(248,113,113,.15);border:1px solid rgba(248,113,113,.3);
  color:var(--bad);
}
.cs-time{font-size:10px;color:var(--mut);padding:0 4px}
.cs-typing{
  padding:8px 12px;display:flex;gap:4px;align-items:center;
}
.cs-dot{
  width:6px;height:6px;background:var(--mut);border-radius:50%;
  animation:csBounce 1.4s infinite ease-in-out;
}
.cs-dot:nth-child(1){animation-delay:-.32s}
.cs-dot:nth-child(2){animation-delay:-.16s}
.cs-dot:nth-child(3){animation-delay:0s}
@keyframes csBounce{
  0%,80%,100%{transform:scale(0);opacity:.5}
  40%{transform:scale(1);opacity:1}
}
.cs-msg-enter{animation:csSlideIn .3s ease-out}
@keyframes csSlideIn{
  from{opacity:0;transform:translateY(10px)}
  to{opacity:1;transform:translateY(0)}
}
/* 用户消息（右侧蓝色气泡） */
.cs-msg-user{align-items:flex-end}
.cs-msg-user .cs-bubble{
  background:linear-gradient(135deg,#4f6ef7,#6d5df6);
  border:1px solid rgba(99,102,241,.5);
  color:#fff;border-top-right-radius:4px;
}
/* 客服输入区 */
.cs-input-row{
  display:flex;gap:8px;padding:10px 12px;
  border-top:1px solid var(--line);background:rgba(11,14,26,.6);
}
.cs-input{
  flex:1;min-width:0;background:#0d1117;border:1px solid #30363d;
  border-radius:10px;color:var(--txt);font-size:13px;
  padding:9px 12px;outline:none;transition:border-color .15s;
}
.cs-input:focus{border-color:#6366f1}
.cs-input::placeholder{color:#6e7681;font-size:12px}
.cs-send{
  background:linear-gradient(90deg,#6366f1,#22d3ee);border:none;color:#fff;
  font-size:13px;font-weight:700;padding:0 16px;border-radius:10px;cursor:pointer;
  transition:opacity .15s;
}
.cs-send:hover{opacity:.85}
@media(max-width:520px){
  .cs-chat-box{width:100%;right:auto;left:auto;bottom:auto}
  .cs-messages{max-height:200px}
  .cs-chat-box.minimized{bottom:80px;right:14px}
}

/* 选购 / 支付弹窗 */
#buyModal .mbox{max-width:760px;max-height:calc(100dvh - 40px);overflow-y:auto;-webkit-overflow-scrolling:touch}
#buyModal .plans{grid-template-columns:repeat(2,1fr)}
/* 币种选择按钮 */
.coin-sel{display:flex;gap:8px;flex-wrap:wrap}
.coin-btn{flex:1;min-width:80px;padding:10px 14px;border-radius:10px;border:1px solid var(--line,#333);background:transparent;color:var(--mut,#9aa3b5);font-size:14px;font-weight:700;cursor:pointer;transition:all .15s}
.coin-btn.active{background:linear-gradient(90deg,var(--p1,#6366f1),var(--p2,#22d3ee));color:#fff;border-color:transparent;box-shadow:0 4px 14px rgba(99,102,241,.35)}
.pay-amt{text-align:center;background:rgba(52,211,153,.08);border:1px solid rgba(52,211,153,.35);border-radius:14px;padding:14px;margin-bottom:14px}
.pay-amt .amt{font-size:28px;font-weight:800;color:var(--ok);margin-top:4px;font-family:monospace;letter-spacing:.5px}
.pay-addr{margin-bottom:14px}
.pay-addr .addr{font-family:monospace;font-size:13px;word-break:break-all;background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:10px;padding:12px;margin:6px 0 10px;color:var(--txt)}
.pay-qr{text-align:center;margin-bottom:8px}
.pay-qr img{width:200px;height:200px;border-radius:12px;background:#fff;padding:8px}
@media(max-width:520px){
  #buyModal .plans{grid-template-columns:1fr}
}