/* reedskill.com — shared styles
   Palette: cinnabar red accent, paper/ink neutrals.
   Two page modes: default (clean modern / Style A) and .serif (warm editorial / Style B). */

:root{
  --accent:#C0392B;
  --accent-soft:#FBECEA;
  --accent-ink:#8E2A20;
  --ink:#1F2328;
  --muted:#6B7280;
  --line:#E7E3DB;
  --bg:#FFFFFF;
  --surface:#F7F5F2;
  --paper:#FBF7F0;
  --maxw:1080px;
  --radius:14px;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;
  --serif:Georgia,"Times New Roman","Songti SC","SimSun",serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  font-size:16px;
}
a{color:var(--accent);text-decoration:none;}
a:hover{text-decoration:underline;}
img{max-width:100%;display:block;}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px;}

/* ---------- Nav ---------- */
.nav{
  border-bottom:1px solid var(--line);
  background:rgba(255,255,255,.9);
  backdrop-filter:saturate(150%) blur(8px);
  position:sticky;top:0;z-index:20;
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:60px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:18px;color:var(--ink);}
.brand img{width:30px;height:30px;border-radius:7px;}
.nav-links{display:flex;gap:22px;align-items:center;font-size:14px;}
.nav-links a{color:var(--ink);}
.nav-links a:hover{color:var(--accent);}
.lang{font-size:13px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:4px 12px;}
.lang:hover{border-color:var(--accent);color:var(--accent);text-decoration:none;}

/* ---------- Hero ---------- */
.hero{text-align:center;padding:64px 20px 40px;}
.pill{
  display:inline-block;background:var(--accent-soft);color:var(--accent-ink);
  font-size:13px;padding:5px 14px;border-radius:999px;margin-bottom:18px;
}
.hero h1{font-size:38px;line-height:1.2;margin:0 0 12px;font-weight:600;letter-spacing:.5px;}
.hero p{font-size:17px;color:var(--muted);margin:0 auto 26px;max-width:640px;}
.cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}
.note{margin-top:16px;font-size:12.5px;color:var(--muted);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-block;padding:11px 22px;border-radius:10px;font-size:15px;font-weight:500;
  border:1px solid var(--accent);cursor:pointer;
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-ink);text-decoration:none;}
.btn-outline{background:transparent;color:var(--accent);}
.btn-outline:hover{background:var(--accent-soft);text-decoration:none;}
.btn[disabled],.btn.is-placeholder{opacity:.55;pointer-events:none;}

/* ---------- Section ---------- */
.section{padding:48px 0;}
.section h2{font-size:26px;margin:0 0 8px;font-weight:600;}
.section .lead{color:var(--muted);margin:0 0 28px;}

/* ---------- Product cards ---------- */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.card{
  border:1px solid var(--line);border-radius:var(--radius);padding:22px;background:var(--surface);
}
.card h3{margin:0 0 8px;font-size:18px;color:var(--accent);}
.card .price{font-size:22px;font-weight:600;margin:6px 0;}
.card p{color:var(--muted);font-size:14.5px;margin:8px 0 16px;}
.card ul{margin:0;padding-left:18px;color:var(--ink);font-size:14px;}
.card ul li{margin:4px 0;}

/* ---------- Feature chips ---------- */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:8px;}
.chip{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:14px;font-size:14px;}

/* ---------- Steps (tutorial) ---------- */
.steps{counter-reset:step;max-width:760px;}
.step{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--line);}
.step:before{
  counter-increment:step;content:counter(step);
  flex:0 0 30px;height:30px;border-radius:50%;background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;
}
.step h4{margin:0 0 4px;font-size:16px;}
.step p{margin:0;color:var(--muted);font-size:14.5px;}

/* ---------- Screenshot placeholder ---------- */
.shot{
  border:1.5px dashed var(--line);border-radius:var(--radius);
  background:repeating-linear-gradient(45deg,#fafafa,#fafafa 12px,#f3f1ec 12px,#f3f1ec 24px);
  min-height:230px;display:flex;align-items:center;justify-content:center;text-align:center;
  color:var(--muted);font-size:14px;padding:24px;margin:14px 0;
}
.shot.small{min-height:160px;}

/* ---------- Pricing ---------- */
.price-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.price-card{border:1px solid var(--line);border-radius:var(--radius);padding:26px;background:var(--surface);}
.price-card.featured{border:2px solid var(--accent);}
.price-card h3{margin:0;font-size:19px;}
.price-card .amount{font-size:34px;font-weight:600;margin:10px 0 2px;}
.price-card .unit{color:var(--muted);font-size:13px;}
.price-card ul{margin:16px 0 20px;padding-left:18px;font-size:14.5px;}
.price-card ul li{margin:6px 0;}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:10px;align-items:stretch;}
.contact-item{display:flex;align-items:center;justify-content:space-between;gap:14px;border:1px solid var(--line);border-radius:10px;padding:16px;background:var(--surface);}
.contact-item .ci-text{flex:1;min-width:0;}
.contact-item .k{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;}
.contact-item .v{font-size:16px;font-weight:600;margin-top:4px;}
.qr-wrap{margin-top:0;display:inline-block;position:relative;flex:0 0 auto;}
.qr,.qr-placeholder{
  width:72px;height:72px;border-radius:8px;border:1px solid var(--line);
  background:#fff;padding:3px;object-fit:contain;
  transition:transform .25s ease,box-shadow .25s ease;
}
.qr-placeholder{
  display:flex;align-items:center;justify-content:center;
  font-size:11px;color:var(--muted);text-align:center;line-height:1.4;
}
/* 二维码放大仅在真正有悬停的设备生效（桌面）；触屏设备保持小尺寸，避免点一下卡住放大盖住内容 */
@media (hover:hover){
  .qr:hover,.qr-placeholder:hover{
    transform:scale(2.35);box-shadow:0 12px 32px rgba(0,0,0,.14);
    z-index:10;position:relative;
  }
}
@media (max-width:760px){
  .qr,.qr-placeholder{width:64px;height:64px;}
}

/* ---------- Footer ---------- */
.footer{border-top:1px solid var(--line);padding:30px 0;margin-top:40px;color:var(--muted);font-size:13px;}
.footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;}
.footer a{color:var(--muted);}

/* ---------- Style B: warm editorial (About page) ---------- */
body.serif{background:var(--paper);font-family:var(--serif);}
body.serif .nav{background:rgba(251,247,240,.92);}
body.serif .hero h1{font-style:italic;font-weight:500;}
body.serif .card,body.serif .chip,body.serif .price-card,body.serif .contact-item{background:#fff;font-family:var(--serif);}
body.serif .section h2{font-weight:500;}

/* ---------- Responsive ---------- */
@media (max-width:760px){
  .cards,.price-grid{grid-template-columns:1fr;}
  .features,.contact-grid{grid-template-columns:1fr;}
  .nav-links{gap:14px;font-size:13px;}
  .hero h1{font-size:30px;}
  .hero{padding:44px 16px 30px;}
  /* 超窄屏（≤360px）导航换行：品牌一行、链接掉到下一行，避免挤爆 */
  .nav-inner{flex-wrap:wrap;height:auto;padding:8px 0;row-gap:6px;}
  .nav-links{flex-wrap:wrap;gap:8px 14px;}
}