/* 介绍页（首页 /）：沿用 app.css 的颜色、字体、按钮、顶栏，自己的样式都以 lp- 开头 */
.lp{overflow-x:hidden}
.lp-in{max-width:1180px;margin:0 auto;padding-inline:20px}
@media (max-width:520px){.lp-in{padding-inline:16px}}
.lp-nav{display:flex;align-items:center;gap:10px}
.lp-nav .btn{height:34px;padding:0 14px;font-size:14px;border-radius:10px;text-decoration:none;display:inline-flex;align-items:center}
@media (max-width:520px){.lp-nav .theme{display:none}.lp-nav .btn{padding:0 11px}}
.lp section{padding-block:56px 8px}
.lp h2{font-family:var(--font-num);font-size:clamp(24px,3.4vw,34px);line-height:1.15;font-weight:700;letter-spacing:-.02em;margin:0 0 8px;text-wrap:balance}
.lp .sub{color:var(--fg-3);font-size:16px;margin:0 0 22px;max-width:64ch}
.lp a{color:inherit}
/* hero */
.lp-hero{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:40px;align-items:center;padding-block:48px 12px!important}
@media (max-width:860px){.lp-hero{grid-template-columns:1fr;gap:28px;padding-top:28px!important}}
.lp-pill{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--accent);background:var(--accent-soft);padding:6px 12px;border-radius:999px}
.lp-hero h1{font-size:clamp(38px,6.4vw,68px);line-height:1.05;margin:16px 0 14px;letter-spacing:-.035em}
.lp-hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--accent),#ff2d55 55%,#8a5cff);-webkit-background-clip:text;background-clip:text;color:transparent}
.lp-hero .lede{font-size:18px;max-width:34em}
.lp-cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.lp-cta .btn{height:48px;padding:0 22px;font-size:16px;border-radius:14px;text-decoration:none;display:inline-flex;align-items:center}
.lp-note{font-size:13px;color:var(--fg-3);margin-top:12px}
/* phone preview */
.lp-phone{justify-self:center;width:min(320px,86vw);aspect-ratio:9/18.5;border-radius:46px;background:#1d1d1f;padding:10px;box-shadow:0 30px 60px rgba(0,0,0,.18),0 0 0 2px #3a3a3c inset}
.lp-scr{height:100%;border-radius:37px;background:var(--bg);overflow:hidden;position:relative;padding:44px 14px 0;display:flex;flex-direction:column;gap:9px}
.lp-isl{position:absolute;top:12px;left:50%;transform:translateX(-50%);width:88px;height:24px;border-radius:14px;background:#1d1d1f}
.lp-row{display:flex;align-items:center;gap:8px}
.lp-scr .tt{font-size:18px;font-weight:700}
.lp-nb{margin-left:auto;display:flex;gap:6px}.lp-nb b{width:26px;height:26px;border-radius:50%;background:var(--surface);display:grid;place-items:center;font-size:15px;box-shadow:var(--shadow)}
.lp-cd{background:var(--surface);border-radius:16px;padding:11px 12px;box-shadow:var(--shadow)}
.lp-cd h4{margin:0 0 7px;font-size:11px;font-weight:500;color:var(--fg-3)}
.lp-pri{width:26px;height:26px;border-radius:8px;background:var(--accent);color:#fff;font-weight:800;font-size:13px;display:grid;place-items:center;flex:none}
.lp-sk{height:10px;border-radius:5px;background:color-mix(in srgb,var(--fg) 12%,transparent);flex:1}
.lp-tags{display:flex;flex-wrap:wrap;gap:5px}
.lp-tags span{font-size:10.5px;padding:3px 7px;border-radius:8px;border:1px solid var(--line-2);color:var(--fg-2)}
.lp-tags .on{background:var(--accent-soft);border-color:transparent;color:var(--accent)}
.lp-tags .ok{background:var(--good-soft);border-color:transparent;color:var(--good)}
.lp-btns{display:flex;gap:6px}.lp-btns span{flex:1;text-align:center;font-size:11.5px;font-weight:600;padding:8px 0;border-radius:10px;background:var(--surface);box-shadow:var(--shadow)}
.lp-btns .call{flex:1.6;background:var(--good);color:#fff}
.lp-g2{display:grid;grid-template-columns:1fr 1fr;gap:6px}.lp-g2 span{font-size:11.5px;font-weight:600;padding:11px 0;text-align:center;border-radius:10px;background:var(--surface);box-shadow:var(--shadow)}
/* stats */
.lp-stats{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;padding-block:40px 0!important}
@media (max-width:760px){.lp-stats{grid-template-columns:repeat(2,1fr)}.lp-stats>div:last-child{grid-column:span 2}}
.lp-stats>div{background:var(--surface);border-radius:var(--r-lg);box-shadow:var(--shadow);padding:18px 12px;text-align:center}
.lp-stats b{display:block;font-family:var(--font-num);font-size:34px;font-weight:700;letter-spacing:-.02em}
.lp-stats b small{font-size:16px;margin-left:2px}
.lp-stats span{font-size:13px;color:var(--fg-3)}
/* grids & cards */
.lp-g4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.lp-g3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:980px){.lp-g4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:760px){.lp-g3{grid-template-columns:1fr}}
@media (max-width:560px){.lp-g4{grid-template-columns:1fr}}
.lp-card{background:var(--surface);border-radius:var(--r-lg);box-shadow:var(--shadow);padding:20px;min-width:0}
.lp-card h3{font-size:17px;margin:0 0 6px;font-weight:700}
.lp-card p{margin:0;color:var(--fg-2);font-size:14px}
.lp-tag{display:inline-block;margin-top:12px;font-size:12px;font-weight:600;color:var(--accent);background:var(--accent-soft);padding:4px 10px;border-radius:999px}
.lp-ic{width:38px;height:38px;border-radius:11px;color:#fff;font-weight:800;font-size:17px;display:grid;place-items:center;margin-bottom:12px}
.lp-flow .lp-card{border-top:4px solid var(--c)}
.lp-flow .k{font-size:12px;font-weight:700;color:var(--c)}
.lp-flow h3{font-size:20px;margin:6px 0 10px}
.lp-flow dl{margin:0}.lp-flow dt{font-weight:700;font-size:14px;margin-top:10px}.lp-flow dd{margin:2px 0 0;color:var(--fg-3);font-size:13px}
.lp-dark{background:linear-gradient(160deg,#2a2440,#1d1b2e)!important;color:#fff;--c:#c47bff}
.lp-dark p{color:rgba(255,255,255,.8)}
.lp-chips{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0}
.lp-chips span{font-size:12.5px;padding:5px 10px;border-radius:999px;background:rgba(255,255,255,.12)}
.lp-feat h3{display:flex;align-items:center;gap:10px}
.lp-feat h3 i{font-style:normal;width:30px;height:30px;border-radius:9px;color:#fff;font-size:14px;display:grid;place-items:center;flex:none}
.lp-feat ul{margin:10px 0 0;padding:0;list-style:none}
.lp-feat li{font-size:14px;color:var(--fg-2);padding-left:14px;position:relative;margin-top:5px}
.lp-feat li:before{content:'';position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:var(--line-2)}
.lp-mgr{font-size:11px;font-weight:600;color:var(--fg-3);margin-left:auto}
/* steps */
.lp-steps{counter-reset:s}
.lp-steps .lp-card{position:relative;padding-top:56px}
.lp-steps .lp-card:before{counter-increment:s;content:counter(s);position:absolute;top:18px;left:20px;width:28px;height:28px;border-radius:50%;background:var(--accent);color:var(--accent-fg);font-weight:700;display:grid;place-items:center;font-size:14px}
/* roles */
.lp-role b{display:block;font-size:24px;font-weight:700;margin:4px 0 6px}
.lp-role .k{font-size:12px;color:var(--fg-3);font-weight:600}
.lp-role.dk{background:var(--fg);color:var(--bg)}.lp-role.dk .k,.lp-role.dk p{color:color-mix(in srgb,var(--bg) 75%,transparent)}
/* faq */
.lp-faq details{background:var(--surface);border-radius:var(--r-md);box-shadow:var(--shadow);padding:0 18px;margin-bottom:10px}
.lp-faq summary{cursor:pointer;font-weight:600;padding:16px 0;list-style:none;display:flex;justify-content:space-between;gap:12px}
.lp-faq summary::-webkit-details-marker{display:none}
.lp-faq summary:after{content:'+';color:var(--fg-3);font-size:20px;line-height:1}
.lp-faq details[open] summary:after{content:'–'}
.lp-faq details p{margin:0 0 16px;color:var(--fg-2);font-size:14px}
/* final cta + footer */
.lp-final{text-align:center;padding-block:64px 24px!important}
.lp-final .lp-cta{justify-content:center}
.lp-foot{border-top:1px solid var(--line);margin-top:40px;padding-block:22px 40px;font-size:13px;color:var(--fg-3);display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center}
.lp-foot a{color:var(--fg-2);text-decoration:none}.lp-foot a:hover{color:var(--accent)}
.lp-foot .sp{flex:1}