/* wordrap.cn 宣传站 —— 暗色霓虹设计系统（与产品视觉一致） */
*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0b0d13;--bg2:#0e1119;--panel:#131722;--panel2:#1a2030;--line:#28304a;
  --text:#eef1f8;--muted:#9aa3b8;--muted2:#6b7591;
  --c1:#ff4d6d;--c2:#ffd60a;--c3:#4cc9f0;--c4:#b15cff;--ok:#4ade80;
  --acc:#4cc9f0;
  --r:16px;
  --maxw:1180px;
}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);line-height:1.75;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--acc);text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit}

/* ---------------- 导航 ---------------- */
.nav{position:sticky;top:0;z-index:60;backdrop-filter:blur(16px);
  background:rgba(11,13,19,.82);border-bottom:1px solid var(--line)}
.nav .in{max-width:var(--maxw);margin:0 auto;padding:0 24px;height:64px;
  display:flex;align-items:center;gap:26px}
.nav .logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:18px;color:var(--text)}
.nav .logo img{height:34px;width:auto}
.nav .links{display:flex;gap:2px;margin-left:8px}
.nav .links a{padding:8px 15px;border-radius:9px;font-size:14.5px;color:var(--muted);transition:.15s}
.nav .links a:hover{color:var(--text);background:var(--panel2)}
.nav .links a.on{color:var(--acc);font-weight:700}
.nav .sp{flex:1}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid var(--line);background:var(--panel2);color:var(--text);
  border-radius:12px;padding:11px 22px;font-size:14.5px;font-weight:700;
  cursor:pointer;transition:.16s;white-space:nowrap}
.btn:hover{background:#212a3d;border-color:#3a4568}
.btn.pri{background:linear-gradient(135deg,#fff,var(--acc));color:#10131c;border:none;
  box-shadow:0 6px 24px rgba(76,201,240,.32)}
.btn.pri:hover{filter:brightness(1.07);transform:translateY(-1px)}
.btn.gold{background:linear-gradient(135deg,#fff5cc,var(--c2));color:#10131c;border:none;
  box-shadow:0 6px 24px rgba(255,214,10,.28)}
.btn.lg{padding:15px 34px;font-size:16px;border-radius:14px}
.btn.sm{padding:8px 16px;font-size:13.5px;border-radius:10px}

/* ---------------- 布局 ---------------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.sect{padding:84px 0}
.sect.tight{padding:56px 0}
.sect.alt{background:var(--bg2);border-block:1px solid var(--line)}
.center{text-align:center}
h1{font-size:clamp(34px,5.6vw,62px);font-weight:900;line-height:1.18;letter-spacing:-1px}
h2{font-size:clamp(26px,3.6vw,40px);font-weight:900;line-height:1.28;letter-spacing:-.5px}
h3{font-size:19px;font-weight:800}
.lead{font-size:clamp(15.5px,1.9vw,18.5px);color:var(--muted);max-width:640px}
.center .lead{margin-left:auto;margin-right:auto}
.grad{background:linear-gradient(120deg,var(--c1) 0%,var(--c2) 42%,var(--c3) 78%,var(--c4) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.grad-b{background:linear-gradient(135deg,#fff 20%,var(--acc) 85%);
  -webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------------- Hero ---------------- */
.hero{position:relative;padding:96px 0 72px;text-align:center;overflow:hidden}
.hero::before,.hero::after{content:'';position:absolute;border-radius:50%;
  filter:blur(90px);pointer-events:none;z-index:-1}
.hero::before{width:640px;height:640px;top:-320px;left:50%;transform:translateX(-8%);
  background:radial-gradient(circle,rgba(76,201,240,.24),transparent 66%)}
.hero::after{width:520px;height:520px;top:-200px;left:12%;
  background:radial-gradient(circle,rgba(177,92,255,.17),transparent 66%)}
.hero .kicker{display:inline-flex;align-items:center;gap:9px;font-size:13.5px;
  color:var(--acc);border:1px solid rgba(76,201,240,.34);background:rgba(76,201,240,.08);
  padding:7px 18px;border-radius:999px;margin-bottom:26px;font-weight:700}
.hero .kicker i{width:7px;height:7px;border-radius:50%;background:var(--ok);
  box-shadow:0 0 9px var(--ok);animation:blink 1.8s infinite;font-style:normal}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.35}}
.hero .lead{margin:26px auto 0}
.hero .cta{margin-top:38px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero .meta{margin-top:22px;font-size:13px;color:var(--muted2)}
.hero .meta b{color:var(--c2);font-weight:800}

/* 数据条 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;max-width:860px;
  margin:58px auto 0}
.stat{background:rgba(255,255,255,.025);border:1px solid var(--line);border-radius:14px;
  padding:20px 10px}
.stat b{display:block;font-size:clamp(24px,3vw,34px);font-weight:900;line-height:1.15}
.stat span{font-size:12.5px;color:var(--muted)}
@media(max-width:720px){.stats{grid-template-columns:repeat(2,1fr)}}

/* ---------------- 截图展示 ---------------- */
.shot{border-radius:18px;border:1px solid #2c3550;overflow:hidden;
  box-shadow:0 30px 90px rgba(0,0,0,.55),0 0 0 1px rgba(255,255,255,.03) inset;
  position:relative}
.shot img{width:100%}
.shot .bar{height:34px;background:#171c29;display:flex;align-items:center;gap:7px;
  padding:0 15px;border-bottom:1px solid #232b40}
.shot .bar i{width:11px;height:11px;border-radius:50%;background:#3a4560}
.shot .bar i:nth-child(1){background:#ff5f57}
.shot .bar i:nth-child(2){background:#febc2e}
.shot .bar i:nth-child(3){background:#28c840}
.shot .bar span{margin-left:10px;font-size:12px;color:var(--muted2);
  font-family:ui-monospace,monospace}

/* 双图对比 */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:start}
@media(max-width:860px){.duo{grid-template-columns:1fr}}
.duo figure{margin:0}
.duo figcaption{text-align:center;margin-top:14px;font-size:13.5px;color:var(--muted)}
.duo figcaption b{color:var(--text)}

/* ---------------- 卡片 ---------------- */
.grid{display:grid;gap:18px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:960px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.g3,.g4,.g2{grid-template-columns:1fr}}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  padding:26px;transition:.18s}
.card:hover{border-color:#3a4568;transform:translateY(-3px)}
.card .ic{width:48px;height:48px;border-radius:13px;display:flex;align-items:center;
  justify-content:center;font-size:23px;margin-bottom:16px;
  background:linear-gradient(135deg,rgba(76,201,240,.16),rgba(177,92,255,.16));
  border:1px solid rgba(76,201,240,.22)}
.card h3{margin-bottom:9px;font-size:17.5px}
.card p{font-size:14px;color:var(--muted);line-height:1.8}
.card p b{color:var(--text)}

/* ---------------- 步骤 ---------------- */
.steps{counter-reset:st;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:860px){.steps{grid-template-columns:1fr}}
.step{position:relative;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r);padding:30px 26px 26px}
.step::before{counter-increment:st;content:counter(st);
  position:absolute;top:-17px;left:24px;width:34px;height:34px;border-radius:11px;
  background:linear-gradient(135deg,var(--c3),var(--c4));color:#0b0d13;
  font-weight:900;font-size:16px;display:flex;align-items:center;justify-content:center;
  box-shadow:0 5px 16px rgba(76,201,240,.4)}
.step h3{font-size:16.5px;margin-bottom:8px}
.step p{font-size:13.8px;color:var(--muted)}

/* ---------------- 模版卡 ---------------- */
.tp{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  padding:24px;position:relative;overflow:hidden}
.tp::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--tc,#4cc9f0)}
.tp .name{font-size:17px;font-weight:900;margin-bottom:5px}
.tp .desc{font-size:13.5px;color:var(--muted);min-height:44px}
.tp .lane{display:flex;gap:5px;margin:16px 0 8px;align-items:center}
.tp .lane i{height:26px;border-radius:6px;display:flex;align-items:center;
  justify-content:center;font-size:11px;font-weight:800;color:#0b0d13;
  font-style:normal;white-space:nowrap;overflow:hidden}
.tp .bpm{font-size:11.5px;color:var(--muted2);font-family:ui-monospace,monospace}

/* ---------------- 教材表 ---------------- */
.table{width:100%;border-collapse:collapse;font-size:14px}
.table th{text-align:left;padding:13px 16px;color:var(--muted);font-weight:700;
  border-bottom:1px solid var(--line);background:rgba(255,255,255,.02)}
.table td{padding:13px 16px;border-bottom:1px solid #1c2334}
.table tr:last-child td{border-bottom:none}
.table tr:hover td{background:rgba(76,201,240,.035)}
.table .n{color:var(--c2);font-weight:800}
.pill{display:inline-block;font-size:12px;padding:3px 11px;border-radius:99px;
  border:1px solid var(--line);color:var(--muted)}
.pill.b{border-color:rgba(76,201,240,.4);color:var(--acc);background:rgba(76,201,240,.07)}

/* ---------------- FAQ ---------------- */
.faq details{background:var(--panel);border:1px solid var(--line);border-radius:14px;
  margin-bottom:12px;overflow:hidden}
.faq summary{cursor:pointer;padding:19px 24px;font-weight:800;font-size:15.5px;
  list-style:none;display:flex;align-items:center;gap:12px;user-select:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:'Q';flex:none;width:26px;height:26px;border-radius:8px;
  background:linear-gradient(135deg,var(--c3),var(--c4));color:#0b0d13;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:900}
.faq summary::after{content:'+';margin-left:auto;color:var(--muted2);font-size:20px;
  transition:.2s;font-weight:400}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .a{padding:0 24px 20px 62px;font-size:14.2px;color:var(--muted);line-height:1.9}
.faq .a b{color:var(--text)}

/* ---------------- 引用块（GEO 问答摘要）---------------- */
.aibox{background:linear-gradient(135deg,rgba(76,201,240,.06),rgba(177,92,255,.05));
  border:1px solid rgba(76,201,240,.25);border-radius:var(--r);padding:26px 28px}
.aibox h3{display:flex;align-items:center;gap:9px;margin-bottom:12px}
.aibox h3 .tag{font-size:11px;font-weight:800;color:#0b0d13;padding:3px 10px;
  border-radius:99px;background:linear-gradient(135deg,var(--c2),var(--c1))}
.aibox p{font-size:14.5px;color:var(--muted);line-height:1.95}
.aibox p b{color:var(--text)}

/* ---------------- CTA 大块 ---------------- */
.cta-band{background:linear-gradient(135deg,rgba(76,201,240,.09),rgba(177,92,255,.09));
  border:1px solid rgba(76,201,240,.25);border-radius:22px;padding:56px 40px;
  text-align:center;position:relative;overflow:hidden}
.cta-band::before{content:'';position:absolute;inset:0;
  background:radial-gradient(500px 200px at 50% 0,rgba(76,201,240,.13),transparent)}
.cta-band>*{position:relative}
.cta-band .row{display:flex;gap:14px;justify-content:center;margin-top:30px;flex-wrap:wrap}

/* ---------------- 页脚 ---------------- */
footer{border-top:1px solid var(--line);padding:52px 0 40px;margin-top:40px;
  background:var(--bg2)}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px}
@media(max-width:820px){footer .cols{grid-template-columns:1fr 1fr}}
footer h4{font-size:13.5px;color:var(--text);margin-bottom:14px;font-weight:800}
footer a{display:block;font-size:13.5px;color:var(--muted);padding:4.5px 0}
footer a:hover{color:var(--acc)}
footer .about{font-size:13.5px;color:var(--muted);line-height:1.85;max-width:320px}
footer .fine{margin-top:38px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:var(--muted2)}

/* ---------------- 面包屑 ---------------- */
.crumbs{font-size:13px;color:var(--muted2);padding:20px 0 0}
.crumbs a{color:var(--muted2)}
.crumbs a:hover{color:var(--acc)}
.crumbs .sep{margin:0 8px;color:var(--muted2)}

/* ---------------- 页头 ---------------- */
.pagehead{padding:64px 0 20px}
.pagehead h1{font-size:clamp(30px,4.4vw,46px)}
.pagehead .lead{margin-top:16px}

/* 徽标墙 */
.logo-row{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.logo-row .pill{font-size:13px;padding:7px 16px}

/* 对比表 */
.vs{width:100%;border-collapse:collapse;font-size:14px}
.vs th,.vs td{padding:14px 18px;border-bottom:1px solid #1c2334;text-align:left}
.vs th{color:var(--muted);font-weight:700;background:rgba(255,255,255,.02)}
.vs td.yes{color:var(--ok);font-weight:800}
.vs td.no{color:var(--muted2)}

/* 响应式导航 */
@media(max-width:880px){
  .nav .links{display:none}
  .sect{padding:60px 0}
}