/* RT 插件官网 —— 单页样式（无外部依赖，离线可用） */
:root{
  --ink:#0f172a; --ink2:#334155; --ink3:#64748b;
  --line:#e2e8f0; --bg:#f6f8fb; --card:#fff;
  --brand:#1e3a8a; --brand2:#2563eb; --accent:#f97316;
  --radius:16px; --shadow:0 4px 20px rgba(15,23,42,.07);
  --shadow-h:0 12px 40px rgba(15,23,42,.13);
  --maxw:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Microsoft YaHei","PingFang SC","Segoe UI",system-ui,sans-serif;
  color:var(--ink); background:var(--bg); line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
/* 【坑】img 必须写 height:auto —— 标签上带了 width/height 属性，
   只写 max-width:100% 会把宽度压下去、高度仍按属性撑住 → 图片拉长变形。 */
img{max-width:100%;height:auto;display:block}
a{color:var(--brand2);text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ---------- 顶栏 ---------- */
header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:28px;height:64px}
.logo{font-weight:900;font-size:19px;color:var(--brand);letter-spacing:.5px;white-space:nowrap}
.logo span{color:var(--accent)}
.nav nav{display:flex;gap:22px;margin-left:auto;flex-wrap:wrap}
.nav nav a{color:var(--ink2);font-size:15px;font-weight:600;padding:4px 0;border-bottom:2px solid transparent}
.nav nav a:hover{color:var(--brand2);border-color:var(--brand2)}
.btn-buy{
  background:linear-gradient(135deg,#ff7a00,#f43f5e);color:#fff!important;font-weight:800;
  padding:9px 20px;border-radius:999px;font-size:15px;box-shadow:0 6px 18px rgba(244,63,94,.28);
  transition:transform .15s, box-shadow .15s;
}
.btn-buy:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(244,63,94,.36)}

/* ---------- 首屏 ---------- */
.hero{
  background:linear-gradient(150deg,#1e3a8a 0%,#2563eb 55%,#0ea5e9 100%);
  color:#fff;padding:64px 0 56px;position:relative;overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 2px,transparent 2px 26px);
}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.tag{
  display:inline-block;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.35);
  border-radius:999px;padding:6px 16px;font-size:14px;font-weight:700;
}
.hero h1{font-size:40px;line-height:1.22;font-weight:900;margin:18px 0 14px;letter-spacing:1px}
.hero p{font-size:17px;color:rgba(255,255,255,.92);max-width:560px}
.hero-cta{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap}
.btn{
  display:inline-block;padding:13px 28px;border-radius:12px;font-weight:800;font-size:16px;
  transition:transform .15s,box-shadow .15s;
}
.btn:hover{transform:translateY(-2px)}
.btn-main{background:#fff;color:var(--brand);box-shadow:0 10px 26px rgba(0,0,0,.16)}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border:1.5px solid rgba(255,255,255,.4)}
.hero img{border-radius:18px;box-shadow:0 20px 50px rgba(0,0,0,.28)}
.hero-stats{display:flex;gap:28px;margin-top:30px;flex-wrap:wrap}
.hero-stats div{font-size:14px;color:rgba(255,255,255,.85)}
.hero-stats b{display:block;font-size:22px;font-weight:900;color:#fff}

/* ---------- 通用区块 ---------- */
section{padding:64px 0}
.sec-head{text-align:center;margin-bottom:38px}
.sec-head h2{font-size:30px;font-weight:900;letter-spacing:.5px}
.sec-head p{color:var(--ink3);margin-top:8px;font-size:16px}
.bar{width:56px;height:4px;border-radius:2px;background:var(--accent);margin:14px auto 0}

/* ---------- 插件卡片 ---------- */
.plugins{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:26px}
.pcard{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s;
  display:flex;flex-direction:column;
}
.pcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-h)}
.pcard .thumb{position:relative;background:#eef2f7}
.pcard .thumb img{width:100%;height:auto;display:block}
.price-tag{
  position:absolute;right:14px;top:14px;background:linear-gradient(135deg,#ff7a00,#f43f5e);
  color:#fff;font-weight:900;font-size:19px;padding:7px 16px;border-radius:999px;
  box-shadow:0 6px 16px rgba(244,63,94,.35);
}
.pbody{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.pbody h3{font-size:21px;font-weight:900;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.ver{font-size:12.5px;font-weight:700;color:var(--brand2);background:#dbeafe;border-radius:999px;padding:3px 10px}
.pdesc{color:var(--ink2);font-size:15px;margin:10px 0 14px}
.pfeat{list-style:none;font-size:14.5px;color:var(--ink2);margin-bottom:18px}
.pfeat li{padding-left:24px;position:relative;margin-bottom:6px}
.pfeat li::before{content:"✓";position:absolute;left:0;color:#16a34a;font-weight:900}
.pfoot{margin-top:auto;display:flex;align-items:center;gap:12px}
.pfoot .price{font-size:26px;font-weight:900;color:#e11d48}
.pfoot .price small{font-size:13px;color:var(--ink3);font-weight:600;text-decoration:line-through;margin-left:6px}
.pfoot .btn{margin-left:auto;padding:10px 22px;font-size:15px}

/* ---------- 组合包 ---------- */
.bundle{
  background:linear-gradient(135deg,#0f172a,#1e3a8a);color:#fff;border-radius:22px;
  padding:38px;display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center;
  box-shadow:var(--shadow-h);
}
.bundle h3{font-size:26px;font-weight:900}
.bundle p{color:rgba(255,255,255,.85);margin-top:8px}
.bundle .bprice{text-align:right}
.bundle .bprice .now{font-size:44px;font-weight:900;color:#ffd166;line-height:1}
.bundle .bprice .old{color:rgba(255,255,255,.6);text-decoration:line-through;font-size:16px;margin-top:6px}
.bundle .btn{background:linear-gradient(135deg,#ff7a00,#f43f5e);color:#fff;margin-top:14px;display:inline-block}

/* ---------- 视频 ---------- */
.video-box{max-width:900px;margin:0 auto}
.video-box video{width:100%;border-radius:16px;box-shadow:var(--shadow-h);background:#000}
.video-cap{text-align:center;color:var(--ink3);font-size:14.5px;margin-top:14px}

/* ---------- 信任要点 ---------- */
.trust{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:20px}
.tcard{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px;text-align:center}
.tcard .ic{font-size:30px}
.tcard h4{margin:8px 0 6px;font-size:17px}
.tcard p{color:var(--ink3);font-size:14px}

/* ---------- 常见问题 ---------- */
.faq{max-width:820px;margin:0 auto}
details{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:12px;padding:4px 18px}
summary{cursor:pointer;font-weight:800;padding:14px 0;font-size:16.5px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--brand2);font-size:22px;font-weight:900;flex:none}
details[open] summary::after{content:"−"}
details p{padding:0 0 16px;color:var(--ink2);font-size:15px}

/* ---------- 购买区 / 页脚 ---------- */
.buy{
  background:linear-gradient(150deg,#fff7ed,#fff);border:1px solid #fed7aa;border-radius:22px;
  padding:40px;text-align:center;
}
.buy h2{font-size:28px;font-weight:900}
.buy p{color:var(--ink2);margin:12px auto 24px;max-width:620px}
footer{background:#0f172a;color:#94a3b8;padding:34px 0;font-size:14px}
footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:center}
footer b{color:#fff}

/* ---------- 灯箱 ---------- */
.lightbox{
  position:fixed;inset:0;background:rgba(2,6,23,.9);z-index:200;display:none;
  align-items:center;justify-content:center;padding:24px;cursor:zoom-out;
}
.lightbox.on{display:flex}
.lightbox img{max-height:92vh;max-width:96vw;border-radius:10px}
.lightbox .close{position:absolute;top:16px;right:22px;color:#fff;font-size:38px;line-height:1;cursor:pointer}

/* ---------- 移动端 ---------- */
@media (max-width:900px){
  .hero .wrap{grid-template-columns:1fr}
  .hero h1{font-size:30px}
  .hero img{max-width:420px;margin:0 auto}
  .bundle{grid-template-columns:1fr;text-align:center;padding:28px}
  .bundle .bprice{text-align:center}
  .nav nav{gap:14px;font-size:14px}
  .nav nav a{font-size:14px}
  section{padding:46px 0}
  .sec-head h2{font-size:24px}
}
@media (max-width:560px){
  .nav{height:auto;padding:10px 0;flex-wrap:wrap}
  .nav nav{width:100%;margin-left:0;justify-content:flex-start;gap:18px}
  /* 手机端顶栏太窄，「去淘宝购买」会被挤出屏幕 —— 首屏和底部都有购买入口，顶栏这份收起来 */
  .nav .btn-buy{display:none}
  .hero{padding:40px 0}
  .buy{padding:26px}
}