/* ===== meimodu官网 style.css ===== */
:root{
  --bg:#0b0617;
  --bg-2:#140a2e;
  --surface:rgba(255,255,255,.06);
  --surface-2:rgba(255,255,255,.1);
  --border:rgba(255,255,255,.12);
  --text:#f4f1ff;
  --muted:#c3b8e6;
  --brand:#7c3aed;
  --brand-2:#a855f7;
  --brand-3:#ec4899;
  --grad:linear-gradient(135deg,#7c3aed 0%,#a855f7 40%,#ec4899 100%);
  --grad-soft:linear-gradient(135deg,rgba(124,58,237,.25),rgba(236,72,153,.25));
  --radius:18px;
  --shadow:0 20px 60px rgba(10,4,30,.45);
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:76px;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.narrow{max-width:860px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;border-radius:0 0 8px 0;z-index:200}
.skip-link:focus{left:0}

/* ===== HEADER / NAV ===== */
.site-header{position:sticky;top:0;z-index:100;backdrop-filter:blur(14px);
  background:rgba(11,6,23,.7);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:.5px}
.brand-logo{width:34px;height:34px;border-radius:10px;background:var(--grad);
  display:grid;place-items:center;color:#fff;font-weight:900;box-shadow:0 6px 18px rgba(124,58,237,.5)}
.brand-ai{color:var(--brand-3)}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a:not(.nav-cta){font-size:15px;color:var(--muted);font-weight:500;transition:color .2s}
.nav-links a:not(.nav-cta):hover{color:#fff}
.nav-cta{padding:8px 18px;border-radius:999px;background:var(--grad);font-size:14px;font-weight:600;
  box-shadow:0 6px 18px rgba(124,58,237,.4)}
.menu-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.menu-toggle span{width:24px;height:2px;background:#fff;border-radius:2px;transition:.3s}

/* ===== HERO ===== */
.hero{position:relative;padding:70px 0 60px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(600px 400px at 12% 10%,rgba(124,58,237,.35),transparent 60%),
    radial-gradient(700px 500px at 90% 20%,rgba(236,72,153,.28),transparent 60%),
    radial-gradient(500px 400px at 60% 100%,rgba(168,85,247,.25),transparent 60%),
    var(--bg)}
.hero-bg::after{content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:26px 26px;-webkit-mask-image:linear-gradient(180deg,#000,transparent 70%);mask-image:linear-gradient(180deg,#000,transparent 70%)}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.eyebrow{display:inline-block;padding:6px 14px;border-radius:999px;background:var(--surface);
  border:1px solid var(--border);font-size:13px;color:var(--muted);margin-bottom:18px;font-weight:500}
.hero h1{font-size:clamp(30px,5vw,52px);line-height:1.15;font-weight:800;margin-bottom:18px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:clamp(15px,2vw,18px);color:var(--muted);max-width:560px;margin-bottom:28px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 28px;border-radius:999px;
  font-weight:600;font-size:15px;cursor:pointer;border:1px solid transparent;transition:transform .2s,box-shadow .2s,background .2s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 30px rgba(124,58,237,.45)}
.btn-ghost{background:var(--surface);border-color:var(--border);color:#fff}
.btn-light{background:#fff;color:var(--brand);box-shadow:0 10px 30px rgba(0,0,0,.25)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.hero-stats{display:flex;gap:30px;flex-wrap:wrap;list-style:none}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats strong{font-size:26px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-stats span{font-size:13px;color:var(--muted)}

/* phone mockup */
.hero-visual{display:flex;justify-content:center}
.phone{width:270px;height:540px;border-radius:38px;background:linear-gradient(160deg,#1a0e3a,#0a0420);
  border:1px solid rgba(255,255,255,.15);padding:14px;box-shadow:var(--shadow);position:relative;
  animation:float 5s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.phone-notch{position:absolute;top:18px;left:50%;transform:translateX(-50%);width:90px;height:6px;border-radius:6px;background:rgba(255,255,255,.2)}
.phone-screen{width:100%;height:100%;border-radius:26px;background:linear-gradient(180deg,#1d1142,#140a30);
  display:flex;flex-direction:column;overflow:hidden}
.chat-head{display:flex;align-items:center;gap:10px;padding:26px 16px 14px;border-bottom:1px solid rgba(255,255,255,.08)}
.avatar{width:38px;height:38px;border-radius:50%;background:var(--grad);display:grid;place-items:center;font-weight:700;color:#fff}
.ch-meta{display:flex;flex-direction:column}
.ch-meta strong{font-size:14px}
.ch-meta span{font-size:11px;color:var(--muted)}
.chat-body{flex:1;padding:14px;display:flex;flex-direction:column;gap:10px;overflow:hidden}
.bubble{max-width:80%;padding:9px 13px;border-radius:14px;font-size:12.5px;line-height:1.5}
.bubble.in{background:rgba(255,255,255,.08);align-self:flex-start;border-bottom-left-radius:4px}
.bubble.out{background:var(--grad);align-self:flex-end;border-bottom-right-radius:4px}
.chat-input{margin:12px;padding:10px 14px;border-radius:999px;background:rgba(255,255,255,.08);font-size:12px;color:var(--muted);text-align:center}

/* ===== SECTIONS ===== */
.section{padding:72px 0}
.section.alt{background:var(--bg-2)}
.section-head{text-align:center;max-width:680px;margin:0 auto 44px}
.kicker{display:inline-block;font-size:13px;letter-spacing:2px;color:var(--brand-2);font-weight:700;margin-bottom:12px}
.section-head h2{font-size:clamp(26px,4vw,38px);font-weight:800;margin-bottom:12px}
.section-head p{color:var(--muted)}
.grid{display:grid;gap:20px}
.features-grid{grid-template-columns:repeat(3,1fr)}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px;transition:transform .25s,background .25s,border-color .25s}
.card:hover{transform:translateY(-6px);background:var(--surface-2);border-color:rgba(168,85,247,.5)}
.card-icon{font-size:30px;width:54px;height:54px;border-radius:14px;background:var(--grad-soft);
  display:grid;place-items:center;margin-bottom:16px}
.card h3{font-size:18px;margin-bottom:10px}
.card p{color:var(--muted);font-size:14.5px}

/* character chips */
.char-grid{grid-template-columns:repeat(4,1fr)}
.chip{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px;
  display:flex;align-items:center;gap:10px;font-weight:600;transition:.25s;cursor:default}
.chip:hover{background:var(--surface-2);border-color:rgba(236,72,153,.5);transform:translateY(-4px)}
.chip span{font-size:22px}

/* scenes */
.scenes-grid{grid-template-columns:repeat(3,1fr)}
.scene{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:.25s}
.scene:hover{background:var(--surface-2);border-color:rgba(168,85,247,.5)}
.scene h3{font-size:17px;margin-bottom:10px}
.scene p{color:var(--muted);font-size:14.5px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px;position:relative}
.step-num{font-size:14px;font-weight:800;color:var(--brand-2);background:var(--grad-soft);
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px}
.step h3{font-size:18px;margin-bottom:10px}
.step p{color:var(--muted);font-size:14.5px}

/* comparison table */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface)}
.cmp{width:100%;border-collapse:collapse;min-width:520px}
.cmp th,.cmp td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--border);font-size:14.5px}
.cmp th{background:var(--surface-2);font-weight:700}
.cmp td.yes{color:#7ee0b6;font-weight:600}
.cmp td.no{color:#ff8fa3}
.cmp tr:last-child td{border-bottom:0}

/* reviews */
.reviews-grid{grid-template-columns:repeat(2,1fr)}
.review{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.stars{color:#ffc658;letter-spacing:2px;margin-bottom:12px}
.review blockquote{color:var(--text);font-size:14.5px;margin-bottom:14px}
.review figcaption{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted)}
.r-name{color:var(--brand-2);font-weight:600}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:14px;overflow:hidden;transition:.25s}
.faq-item[open]{border-color:rgba(168,85,247,.5)}
.faq-item summary{padding:18px 20px;font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:22px;color:var(--brand-2);transition:transform .3s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{padding:0 20px 20px;color:var(--muted);font-size:14.5px}

/* download */
.download{background:
  radial-gradient(500px 300px at 20% 30%,rgba(124,58,237,.3),transparent 60%),
  radial-gradient(500px 300px at 80% 70%,rgba(236,72,153,.25),transparent 60%),var(--bg-2)}
.download-box{text-align:center;padding:50px 24px;border-radius:24px;
  background:var(--grad-soft);border:1px solid var(--border)}
.download-box h2{font-size:clamp(24px,4vw,36px);font-weight:800;margin-bottom:14px}
.download-box p{color:var(--muted);margin-bottom:26px}
.dl-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.dl-note{margin-top:18px;font-size:13px;color:var(--muted)}

/* footer */
.site-footer{background:#070312;border-top:1px solid var(--border);padding:46px 0 26px}
.footer-inner{display:flex;flex-direction:column;gap:18px;align-items:center;text-align:center}
.footer-brand .brand{justify-content:center}
.footer-brand p{color:var(--muted);font-size:14px;margin-top:8px}
.footer-nav{display:flex;gap:22px;flex-wrap:wrap;justify-content:center}
.footer-nav a{color:var(--muted);font-size:14px;transition:color .2s}
.footer-nav a:hover{color:#fff}
.seo-text{color:var(--muted);font-size:13px;max-width:780px;line-height:1.8;opacity:.85}
.copy{color:var(--muted);font-size:13px;opacity:.7;padding-top:10px;border-top:1px solid var(--border);width:100%}

/* to top */
.to-top{position:fixed;right:20px;bottom:20px;width:46px;height:46px;border-radius:50%;
  background:var(--grad);border:0;color:#fff;font-size:20px;cursor:pointer;z-index:90;
  box-shadow:0 8px 24px rgba(124,58,237,.5);opacity:0;visibility:hidden;transform:translateY(10px);transition:.3s}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}

/* scroll reveal */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ===== RESPONSIVE ===== */
@media (max-width:980px){
  .features-grid,.scenes-grid,.steps{grid-template-columns:repeat(2,1fr)}
  .char-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:760px){
  .nav-links{position:fixed;inset:64px 0 auto 0;flex-direction:column;align-items:flex-start;
    background:rgba(11,6,23,.98);backdrop-filter:blur(14px);padding:18px 24px 26px;gap:18px;
    border-bottom:1px solid var(--border);transform:translateY(-130%);
    transition:transform .35s ease,visibility .35s;visibility:hidden}
  .nav-links.open{transform:translateY(0);visibility:visible}
  .menu-toggle{display:flex}
  .menu-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .menu-toggle.active span:nth-child(2){opacity:0}
  .menu-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .hero{padding:48px 0 40px}
  .hero-inner{grid-template-columns:1fr;gap:34px;text-align:center}
  .hero-cta,.hero-stats{justify-content:center}
  .lead{margin-left:auto;margin-right:auto}
  .hero-visual{order:-1}
  .phone{width:240px;height:480px}
  .features-grid,.scenes-grid,.steps,.reviews-grid{grid-template-columns:1fr}
  .char-grid{grid-template-columns:repeat(2,1fr)}
  .section{padding:54px 0}
}
@media (max-width:420px){
  .container{padding:0 16px}
  .hero-stats{gap:20px}
  .hero-stats strong{font-size:22px}
  .btn{padding:12px 22px;font-size:14.5px}
  .chip{padding:13px;font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* ===== 图片本地化样式 ===== */
.brand-logo-img{height:34px;width:auto;border-radius:9px;object-fit:contain;display:block;box-shadow:0 6px 18px rgba(124,58,237,.35)}
.phone-shot{width:100%;height:100%;object-fit:cover;border-radius:26px;display:block}
.showcase-grid{grid-template-columns:repeat(4,1fr)}
.shot{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:transform .25s,border-color .25s}
.shot:hover{transform:translateY(-6px);border-color:rgba(168,85,247,.5)}
.shot img{width:100%;aspect-ratio:9/16;object-fit:cover;display:block;background:#0a0420}
.shot figcaption{padding:12px 14px;font-size:14px;color:var(--muted);text-align:center}
@media (max-width:980px){.showcase-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){
  .showcase-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .shot figcaption{padding:9px 10px;font-size:12.5px}
}