:root{
  --bg:#f6f8fc; --card:#ffffff; --ink:#16192b; --ink2:#5b6178; --ink3:#8a90a6;
  --line:#e7ebf3; --brand:#5b5bd6; --brand2:#8b5cf6; --brand-soft:#eef0ff;
  --accent:#f59e0b; --accent-soft:#fff5e6; --ok:#10b981; --radius:16px;
  --shadow:0 1px 2px rgba(22,25,43,.04), 0 8px 24px -12px rgba(22,25,43,.12);
  --shadow-lg:0 8px 32px -8px rgba(91,91,214,.24);
  --maxw:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg); color:var(--ink); line-height:1.6; -webkit-font-smoothing:antialiased;
  font-size:15px;
}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul{list-style:none}
img,svg{display:block;max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.hdr{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line)}
.hdr-in{display:flex;align-items:center;gap:18px;height:64px}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:18px;letter-spacing:-.3px;white-space:nowrap}
.logo-mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--brand2));display:grid;place-items:center;color:#fff;font-size:15px;font-weight:800;box-shadow:0 4px 12px -3px rgba(91,91,214,.5)}
.nav{display:flex;gap:4px;margin-left:8px}
.nav a{padding:8px 12px;border-radius:9px;font-size:14px;color:var(--ink2);font-weight:500;transition:.16s}
.nav a:hover{background:var(--brand-soft);color:var(--brand)}
.hdr-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.lang-btn{display:flex;align-items:center;gap:6px;padding:7px 12px;border:1px solid var(--line);border-radius:999px;font-size:13px;font-weight:600;color:var(--ink2);background:#fff;transition:.16s}
.lang-btn:hover{border-color:var(--brand);color:var(--brand)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:10px 18px;border-radius:11px;font-size:14px;font-weight:650;transition:.16s;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 6px 18px -8px rgba(91,91,214,.6)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-lg)}
.btn-ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.menu-btn{display:none;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);align-items:center;justify-content:center;font-size:16px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(175deg,#eef0ff 0%,#f7f8ff 42%,var(--bg) 100%)}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;filter:blur(60px);opacity:.5;pointer-events:none}
.hero::before{width:420px;height:420px;background:#c7d2fe;top:-160px;right:-80px}
.hero::after{width:320px;height:320px;background:#fbcfe8;bottom:-140px;left:-90px}
.hero-in{position:relative;padding:74px 0 60px;text-align:center}
.badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--ink2);font-weight:600;box-shadow:var(--shadow)}
.badge b{color:var(--accent)}
h1{font-size:clamp(30px,5.2vw,52px);line-height:1.18;font-weight:850;letter-spacing:-1px;margin:20px 0 14px}
h1 em{font-style:normal;background:linear-gradient(135deg,var(--brand),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:17px;color:var(--ink2);max-width:660px;margin:0 auto}
.hero-cta{display:flex;gap:12px;justify-content:center;margin-top:26px;flex-wrap:wrap}
.hero-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;max-width:840px;margin:44px auto 0}
.hcard{display:flex;align-items:center;gap:13px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:15px 17px;text-align:left;box-shadow:var(--shadow);transition:.18s}
.hcard:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#d6d9f5}
.hcard .p-logo{width:40px;height:40px;font-size:16px}
.hcard-n{font-weight:700;font-size:15px}
.hcard-p{font-size:13px;color:var(--ink3)}
.hcard-p b{color:var(--brand);font-size:14px}
.trust{display:flex;justify-content:center;gap:38px;flex-wrap:wrap;margin-top:40px;padding-top:28px;border-top:1px solid #e3e7f5}
.trust div{text-align:center}
.trust b{display:block;font-size:22px;font-weight:800;letter-spacing:-.5px}
.trust span{font-size:12.5px;color:var(--ink3)}

/* ---------- sections ---------- */
section{padding:74px 0}
.sec-head{text-align:center;margin-bottom:38px}
.sec-tag{display:inline-block;font-size:12.5px;font-weight:700;color:var(--brand);background:var(--brand-soft);padding:5px 12px;border-radius:999px;letter-spacing:.2px}
h2{font-size:clamp(24px,3.4vw,34px);font-weight:800;letter-spacing:-.6px;margin:12px 0 10px}
.sec-desc{color:var(--ink2);font-size:15.5px;max-width:640px;margin:0 auto}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);transition:.18s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}

/* category */
.cat{display:flex;flex-direction:column;gap:6px;text-align:left}
.cat-ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:20px;background:var(--brand-soft);margin-bottom:10px}
.cat h3{font-size:16px;font-weight:750}
.cat p{font-size:13px;color:var(--ink3);line-height:1.55}

/* product card */
.p-card{display:flex;flex-direction:column;gap:10px;padding:20px}
.p-logo{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;color:#fff;font-weight:800;font-size:17px;flex:0 0 auto}
.p-title-row{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.p-card h3{font-size:16px;font-weight:750}
.tag{font-size:11px;font-weight:700;padding:2.5px 7px;border-radius:6px;line-height:1.5}
.tag.hot{background:#fff1f2;color:#e11d48}
.tag.new{background:var(--accent-soft);color:#b45309}
.p-desc{font-size:13.5px;color:var(--ink2);line-height:1.5;min-height:40px}
.p-sub{font-size:12px;color:var(--ink3)}
.p-foot{display:flex;align-items:baseline;justify-content:space-between;margin-top:auto;padding-top:10px;border-top:1px dashed var(--line)}
.price{font-size:12.5px;color:var(--ink3)}
.price b{font-size:19px;color:var(--brand);font-weight:800;letter-spacing:-.4px}
.sold{font-size:12px;color:var(--ink3)}
.btn-buy{margin-top:10px;width:100%;padding:9px;border-radius:10px;background:var(--brand-soft);color:var(--brand);font-size:13.5px;font-weight:700;transition:.16s}
.btn-buy:hover{background:var(--brand);color:#fff}

/* plans */
.plan{text-align:left}
.plan-ico{font-size:22px;margin-bottom:10px}
.plan h3{font-size:16.5px;font-weight:750;margin-bottom:6px}
.plan p{font-size:13.5px;color:var(--ink2);line-height:1.6}
.plan-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.chip{font-size:11.5px;padding:3px 9px;border-radius:999px;background:#f3f4fb;color:var(--ink2);border:1px solid var(--line)}

/* features */
.feat{text-align:center;padding:24px 18px}
.feat-ico{width:50px;height:50px;margin:0 auto 14px;border-radius:14px;display:grid;place-items:center;font-size:22px;background:linear-gradient(135deg,var(--brand-soft),#f5f3ff)}
.feat h3{font-size:15.5px;font-weight:750;margin-bottom:6px}
.feat p{font-size:13px;color:var(--ink3);line-height:1.6}

/* steps */
.steps{position:relative}
.step{text-align:center;padding:8px}
.step-n{width:44px;height:44px;margin:0 auto 14px;border-radius:50%;display:grid;place-items:center;font-size:17px;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand2));box-shadow:0 8px 20px -10px rgba(91,91,214,.8)}
.step h3{font-size:15.5px;font-weight:750;margin-bottom:5px}
.step p{font-size:13px;color:var(--ink3)}

/* reviews */
.rev{display:flex;flex-direction:column;gap:10px}
.rev-top{display:flex;align-items:center;gap:10px}
.rev-av{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-weight:700;font-size:14px;flex:0 0 auto}
.rev-meta{font-size:12px;color:var(--ink3)}
.stars{color:#f59e0b;font-size:13px;letter-spacing:1px}
.rev p{font-size:13.5px;color:var(--ink2);line-height:1.65}

/* guides */
.guide{display:flex;flex-direction:column;gap:8px}
.guide h3{font-size:16px;font-weight:750;line-height:1.5}
.guide p{font-size:13.5px;color:var(--ink2);line-height:1.6}
.guide .more{font-size:13.5px;font-weight:700;color:var(--brand);margin-top:auto;padding-top:6px}

/* news */
.news-item{display:flex;gap:16px;align-items:flex-start;padding:18px 20px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:.18s}
.news-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.news-date{font-size:12.5px;color:var(--ink3);font-variant-numeric:tabular-nums;flex:0 0 auto;padding-top:2px}
.news-item h3{font-size:15px;font-weight:700;line-height:1.5}
.news-item .more{font-size:13px;font-weight:700;color:var(--brand)}

/* faq */
.faq{max-width:820px;margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;margin-bottom:10px;overflow:hidden;box-shadow:var(--shadow)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:16px 20px;font-size:15px;font-weight:650;text-align:left}
.faq-q:hover{background:#fafbff}
.faq-q .ic{transition:.2s;font-size:18px;color:var(--brand);flex:0 0 auto}
.faq-item.open .faq-q{border-bottom:1px solid var(--line)}
.faq-item.open .ic{transform:rotate(45deg)}
.faq-a{display:none;padding:15px 20px 18px;font-size:14px;color:var(--ink2);line-height:1.7}
.faq-item.open .faq-a{display:block}

/* filter bar */
.filter{display:flex;gap:10px;align-items:center;flex-wrap:wrap;justify-content:center;margin-bottom:26px}
.tab{padding:8px 15px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:13.5px;font-weight:600;color:var(--ink2);transition:.16s}
.tab:hover{border-color:var(--brand);color:var(--brand)}
.tab.active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 6px 16px -8px rgba(91,91,214,.7)}
.search{display:flex;align-items:center;gap:8px;padding:8px 14px;border:1px solid var(--line);border-radius:999px;background:#fff;min-width:220px}
.search input{border:none;outline:none;font-size:13.5px;font-family:inherit;background:transparent;width:100%;color:var(--ink)}
.search input::placeholder{color:var(--ink3)}
.empty{grid-column:1/-1;text-align:center;padding:40px;color:var(--ink3);font-size:14px}

/* cta band */
.band{background:linear-gradient(135deg,var(--brand),var(--brand2));border-radius:22px;padding:48px 40px;text-align:center;color:#fff;box-shadow:var(--shadow-lg)}
.band h2{color:#fff;margin-bottom:10px}
.band p{opacity:.9;margin-bottom:24px;font-size:15.5px}
.band .btn-primary{background:#fff;color:var(--brand);box-shadow:0 8px 24px -10px rgba(0,0,0,.35)}
.band .btn-ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}

/* footer */
footer{background:#12142a;color:#a9afc6;padding:56px 0 26px;margin-top:20px}
.f-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px}
footer h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:14px}
footer li{font-size:13.5px;padding:4px 0}
footer li a:hover{color:#fff}
.f-brand p{font-size:13.5px;line-height:1.7;max-width:320px}
.f-logo{display:flex;align-items:center;gap:9px;color:#fff;font-weight:800;font-size:17px;margin-bottom:12px}
.f-bottom{border-top:1px solid #232641;margin-top:36px;padding-top:20px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px;color:#7b819c}

/* toast */
#toast{position:fixed;left:50%;bottom:34px;transform:translate(-50%,20px);background:var(--ink);color:#fff;padding:12px 22px;border-radius:12px;font-size:14px;font-weight:600;box-shadow:0 12px 32px -10px rgba(0,0,0,.5);opacity:0;pointer-events:none;transition:.24s;z-index:99;max-width:90vw;text-align:center}
#toast.show{opacity:1;transform:translate(-50%,0)}

/* back to top */
#top{position:fixed;right:22px;bottom:34px;width:42px;height:42px;border-radius:50%;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);display:grid;place-items:center;font-size:17px;opacity:0;pointer-events:none;transition:.2s;z-index:60}
#top.show{opacity:1;pointer-events:auto}
#top:hover{border-color:var(--brand);color:var(--brand)}

/* mobile nav */
.mnav{display:none;position:fixed;inset:64px 0 auto 0;background:#fff;border-bottom:1px solid var(--line);padding:12px 20px 18px;z-index:49;box-shadow:var(--shadow)}
.mnav.open{display:block}
.mnav a{display:block;padding:11px 4px;font-size:15px;font-weight:600;color:var(--ink2);border-bottom:1px solid #f1f3f9}

@media(max-width:1024px){
  .g4{grid-template-columns:repeat(3,1fr)}
  .f-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:860px){
  .nav{display:none}.menu-btn{display:flex}
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .hero-cards{grid-template-columns:1fr}
  section{padding:56px 0}
  .trust{gap:24px}
}
@media(max-width:560px){
  .g2,.g3,.g4{grid-template-columns:1fr}
  .hdr-right .btn-primary{display:none}
  h1{font-size:29px}
  .band{padding:34px 22px}
  .f-grid{grid-template-columns:1fr}
  .trust{gap:16px 22px}
}

/* ============ 多页面扩展样式 ============ */
.nav a.active{background:var(--brand-soft);color:var(--brand);font-weight:700}
.btn-buy{display:block;text-align:center}
.p-actions{margin-top:10px}

/* 内页顶部 */
.page-hero{background:linear-gradient(175deg,#eef0ff 0%,#f7f8ff 60%,var(--bg) 100%);padding:44px 0 34px;border-bottom:1px solid var(--line)}
.crumb{font-size:13px;color:var(--ink3);margin-bottom:12px}
.crumb a{color:var(--ink2)}
.crumb a:hover{color:var(--brand)}
.crumb span{color:var(--ink)}
.page-hero h1{font-size:clamp(24px,3.4vw,34px);margin:0 0 8px}
.page-hero .lead{color:var(--ink2);font-size:15.5px;max-width:660px}

/* 分类计数 */
.cat-count{display:inline-block;margin-top:10px;font-size:12px;color:var(--brand);background:var(--brand-soft);padding:3px 9px;border-radius:999px;font-weight:600}

/* 产品详情 */
.pd-hero-card{display:flex;gap:22px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:var(--shadow)}
.p-logo.lg{width:76px;height:76px;border-radius:18px;font-size:28px}
.pd-hero-txt{flex:1;min-width:0}
.pd-hero-txt h1{font-size:26px;margin:0}
.pd-lead{font-size:15.5px;color:var(--ink2);margin:8px 0 4px}
.tag.cat{background:var(--brand-soft);color:var(--brand)}
.pd-price{font-size:13px;color:var(--ink3);margin-top:12px}
.pd-price b{font-size:26px;color:var(--brand);font-weight:800}
.pd-price .sold{margin-left:10px}
.pd-hero-actions{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}
.spec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:18px}
.spec{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.spec span{display:block;font-size:12px;color:var(--ink3);margin-bottom:3px}
.spec b{font-size:13.5px}

/* 套餐卡 */
.plan-card{display:flex;flex-direction:column;gap:8px;text-align:left}
.plan-card h3{font-size:16.5px;font-weight:750}
.plan-desc{font-size:13px;color:var(--ink3);min-height:38px}
.plan-price{display:flex;align-items:baseline;gap:4px;padding:8px 0;border-top:1px dashed var(--line);border-bottom:1px dashed var(--line)}
.plan-price b{font-size:30px;color:var(--brand);font-weight:800;letter-spacing:-1px}
.plan-price span{font-size:13px;color:var(--ink3)}
.plan-feats{list-style:none;font-size:13px;color:var(--ink2);display:grid;gap:7px;margin:4px 0 6px}
.plan-feats li{padding-left:18px;position:relative}
.plan-feats li::before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:700}
.plan-card.featured{border:2px solid var(--brand);box-shadow:var(--shadow-lg)}
.plan-card.featured::after{content:"";position:absolute}
.plan-badge{position:absolute;top:-11px;right:16px;background:var(--brand);color:#fff;font-size:11px;font-weight:700;padding:3px 10px;border-radius:999px}
.plan-card{position:relative;overflow:visible}

/* 亮点 */
.hl-item{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--ink2);padding:9px 0;border-bottom:1px solid #f1f3f9}
.hl-item:last-child{border-bottom:none}
.hl-dot{width:22px;height:22px;border-radius:50%;background:#e8fbf3;color:var(--ok);display:grid;place-items:center;font-size:12px;font-weight:800;flex:0 0 auto}

/* 正文排版 */
.art-wrap{display:grid;grid-template-columns:220px 1fr;gap:32px;align-items:start}
.art-toc{position:sticky;top:84px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}
.art-toc h4{font-size:13px;color:var(--ink3);margin-bottom:10px;font-weight:700}
.art-toc li{font-size:13.5px;padding:5px 0;color:var(--ink2)}
.art-toc a:hover{color:var(--brand)}
.art-body{background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px 34px}
.art-sec{margin-bottom:26px}
.art-sec h2{font-size:19px;margin:0 0 10px;text-align:left}
.art-sec p{font-size:15px;color:var(--ink2);line-height:1.85}
.art-ul{list-style:none;margin-top:10px;display:grid;gap:8px}
.art-ul li{position:relative;padding-left:20px;font-size:14.5px;color:var(--ink2);line-height:1.7}
.art-ul li::before{content:"";position:absolute;left:6px;top:10px;width:6px;height:6px;border-radius:50%;background:var(--brand)}

/* FAQ 分组 */
.faq-group{margin-bottom:22px}
.faq-group-title{font-size:15px;font-weight:750;color:var(--ink);margin-bottom:10px;padding-left:12px;border-left:3px solid var(--brand)}

/* 里程碑 */
.ms-item{display:flex;gap:16px;align-items:baseline;padding:12px 0;border-bottom:1px dashed var(--line)}
.ms-d{font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;flex:0 0 auto;font-size:15px}

/* 联系 */
.ct-card{text-align:center;padding:24px 18px}
.ct-ico{font-size:24px;display:block;margin-bottom:8px}
.ct-card h3{font-size:14px;color:var(--ink3);font-weight:600}
.ct-val{font-size:15px;font-weight:700;color:var(--ink);margin-top:4px;word-break:break-all}
.form{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:var(--shadow);max-width:640px}
.form-row{margin-bottom:16px}
.form-row label{display:block;font-size:13px;font-weight:650;color:var(--ink2);margin-bottom:6px}
.form-row input,.form-row select,.form-row textarea{
  width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:11px;font-size:14px;
  font-family:inherit;color:var(--ink);background:#fcfcff;outline:none;transition:.16s}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{border-color:var(--brand);background:#fff}
.form-row textarea{min-height:88px;resize:vertical}

/* 空态 */
.empty-box{text-align:center;padding:70px 20px}
.empty-box h2{font-size:22px;margin-bottom:10px}
.empty-box p{color:var(--ink3);margin-bottom:22px}

/* 结果条 */
.toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px;flex-wrap:wrap}
.toolbar .count{font-size:13.5px;color:var(--ink3)}
.sort-select{padding:8px 12px;border:1px solid var(--line);border-radius:999px;font-size:13.5px;font-family:inherit;background:#fff;color:var(--ink2);outline:none}

/* 方案详情 */
.case-hero{display:flex;gap:20px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:var(--shadow)}
.case-hero .ico{font-size:40px}
.case-hero h1{font-size:24px;margin:0 0 8px;text-align:left}
.case-hero .lead{color:var(--ink2);font-size:15px}
.plan.sm{padding:16px;text-align:center}
.plan.sm h3{font-size:14px}
.plan.sm .plan-ico{font-size:20px;margin-bottom:6px}
.more-link{display:inline-block;margin-top:10px;font-size:13.5px;font-weight:700;color:var(--brand)}

@media(max-width:1024px){
  .spec-grid{grid-template-columns:repeat(2,1fr)}
  .art-wrap{grid-template-columns:1fr}
  .art-toc{position:static}
}
@media(max-width:700px){
  .pd-hero-card{flex-direction:column;gap:14px}
  .page-hero{padding:32px 0 26px}
  .art-body{padding:22px 20px}
  .case-hero{flex-direction:column}
}

/* ===== 支付弹窗（下单 → 选支付方式 → 收款地址 + 二维码） ===== */
.pay-modal{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;padding:20px;
  background:rgba(16,19,35,.55);backdrop-filter:blur(3px);overflow-y:auto}
.pay-modal.open{display:flex}
body.pay-lock{overflow:hidden}
.pay-sheet{width:100%;max-width:520px;max-height:calc(100vh - 40px);overflow-y:auto;background:var(--card);
  border-radius:20px;box-shadow:0 24px 64px -16px rgba(16,19,35,.5);animation:payIn .18s ease-out}
@keyframes payIn{from{opacity:0;transform:translateY(12px) scale(.98)}to{opacity:1;transform:none}}
.pay-head{position:sticky;top:0;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:18px 22px;border-bottom:1px solid var(--line);background:var(--card);border-radius:20px 20px 0 0}
.pay-head h3{margin:0;font-size:16px;font-weight:800}
.pay-oid{color:var(--brand);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.2px}
.pay-x{border:0;background:transparent;font-size:24px;line-height:1;color:var(--ink3);cursor:pointer;padding:0 4px}
.pay-x:hover{color:var(--ink)}
.pay-body{padding:18px 22px 22px}
.pay-order{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;
  border-radius:12px;background:var(--brand-soft);margin-bottom:16px}
.pay-order b{font-size:14.5px}
.pay-order span{font-size:13px;color:var(--ink2)}
.pay-label{font-size:13px;font-weight:700;color:var(--ink2);margin:14px 0 8px}
.pay-methods{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.pay-m{display:flex;flex-direction:column;gap:2px;align-items:flex-start;text-align:left;padding:10px 12px;
  border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;transition:.15s;font-family:inherit}
.pay-m b{font-size:13.5px;color:var(--ink)}
.pay-m span{font-size:11.5px;color:var(--ink3)}
.pay-m:hover{border-color:var(--brand)}
.pay-m.sel{border-color:var(--brand);background:var(--brand-soft);box-shadow:0 0 0 2px rgba(91,91,214,.12)}
.pay-m.sel b{color:var(--brand)}
.pay-input{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:12px;font-size:14px;
  font-family:inherit;color:var(--ink);outline:none}
.pay-input:focus{border-color:var(--brand)}
.pay-sum{margin-top:16px;padding:16px;border:1px solid var(--line);border-radius:14px;background:#fbfcff}
.pay-row{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:5px 0;font-size:13.5px;color:var(--ink2)}
.pay-row b{color:var(--ink);font-weight:700;text-align:right;word-break:break-all}
.pay-row.big b{font-size:20px;color:#e0393e}
.pay-rate{font-size:11.5px;color:var(--ink3);margin:2px 0 6px}
.pay-qr{display:flex;gap:14px;align-items:flex-start;margin:12px 0;padding:12px;background:#fff;
  border:1px dashed var(--line);border-radius:12px}
.pay-qr-img{width:132px;height:132px;flex:none;background:#fff;border:1px solid var(--line);border-radius:10px;
  display:grid;place-items:center;overflow:hidden}
.pay-qr-img svg{width:100%;height:100%;display:block}
.pay-qr-img.empty{font-size:11px;color:var(--ink3);text-align:center;padding:8px}
.pay-qr-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:8px}
.pay-addr{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;line-height:1.5;word-break:break-all}
.pay-copy{padding:11px 14px;border:0;border-radius:10px;font-size:13.5px;font-weight:700;color:#fff;cursor:pointer;
  background:linear-gradient(135deg,#ff8a3d,#ff5a3d);box-shadow:0 6px 16px -6px rgba(255,90,61,.6);font-family:inherit}
.pay-copy:hover{filter:brightness(1.04)}
.pay-noaddr{padding:14px;border-radius:12px;background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;font-size:13px;margin:12px 0}
.pay-note{font-size:12.5px;color:var(--ink2);margin:8px 0 0;line-height:1.6}
.pay-foot{font-size:11.5px;color:var(--ink3);margin:6px 0 0;text-align:center}
.pay-done{width:100%;margin-top:14px;padding:13px;border:0;border-radius:12px;font-size:15px;font-weight:700;
  color:#fff;cursor:pointer;font-family:inherit;background:linear-gradient(135deg,var(--brand),var(--brand2));
  box-shadow:var(--shadow-lg)}
.pay-done:hover{filter:brightness(1.03)}

@media(max-width:700px){
  .pay-modal{padding:12px}
  .pay-sheet{max-height:calc(100vh - 24px);border-radius:16px}
  .pay-methods{grid-template-columns:1fr}
  .pay-qr{flex-direction:column;align-items:center}
  .pay-qr-info{width:100%}
}

/* 套餐档位卡（对齐参考站的真实档位：¥ / USDT / 官方价 / 省多少） */
.plan-usdt{font-size:13px;font-weight:700;color:#e0393e}
.plan-meta{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;font-size:12px;color:var(--ink3)}
.plan-official{text-decoration:line-through}
.plan-save{background:#fff1f0;color:#e0393e;font-weight:700;font-size:11.5px;padding:2px 8px;border-radius:999px}