/* ============ 风月AI · 风月浪漫主题 ============ */
:root{
  --bg:#0A0410;
  --bg-soft:#140820;
  --card:rgba(30,14,40,.72);
  --card-2:rgba(40,18,56,.88);
  --rose:#EC4899;
  --rose-2:#DB2777;
  --lav:#A78BFA;
  --lav-2:#8B5CF6;
  --pink:#F472B6;
  --gold:#FBBF24;
  --text:#F1E8FF;
  --muted:#B8A8CC;
  --line:rgba(236,72,153,.25);
  --grad:linear-gradient(135deg,#EC4899 0%,#A78BFA 100%);
  --grad-2:linear-gradient(135deg,#F472B6 0%,#EC4899 50%,#A78BFA 100%);
  --grad-pink:linear-gradient(135deg,#FBBF24,#EC4899);
  --radius:16px;
  --shadow:0 10px 40px rgba(0,0,0,.5);
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.7;
  overflow-x:hidden;padding-bottom:78px;position:relative;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none}
ul{list-style:none}

/* ===== Dynamic Background: nebula + stars + petals ===== */
.bg-fx{position:fixed;inset:0;z-index:-1;overflow:hidden;background:var(--bg)}
.bg-fx .stars{position:absolute;inset:0;
  background-image:
    radial-gradient(1.5px 1.5px at 12% 18%,#fff,transparent),
    radial-gradient(1px 1px at 25% 42%,#fff,transparent),
    radial-gradient(2px 2px at 38% 12%,#FBBF24,transparent),
    radial-gradient(1px 1px at 52% 68%,#fff,transparent),
    radial-gradient(1.5px 1.5px at 65% 28%,#fff,transparent),
    radial-gradient(1px 1px at 78% 55%,#FBBF24,transparent),
    radial-gradient(1.5px 1.5px at 88% 15%,#fff,transparent),
    radial-gradient(1px 1px at 18% 82%,#fff,transparent),
    radial-gradient(1px 1px at 45% 90%,#fff,transparent),
    radial-gradient(1.5px 1.5px at 72% 78%,#FBBF24,transparent),
    radial-gradient(1px 1px at 92% 42%,#fff,transparent),
    radial-gradient(1px 1px at 8% 55%,#fff,transparent);
  background-size:100% 100%;animation:twinkle 5s ease-in-out infinite alternate}
@keyframes twinkle{0%{opacity:.5}100%{opacity:1}}
.bg-fx .nebula{position:absolute;border-radius:50%;filter:blur(90px);opacity:.32;animation:drift 24s ease-in-out infinite}
.bg-fx .nebula:nth-of-type(1){width:480px;height:480px;background:var(--rose);top:-140px;left:-80px}
.bg-fx .nebula:nth-of-type(2){width:380px;height:380px;background:var(--lav-2);bottom:-120px;right:-100px;animation-delay:-8s}
.bg-fx .nebula:nth-of-type(3){width:280px;height:280px;background:var(--pink);top:42%;left:58%;animation-delay:-14s;opacity:.2}
@keyframes drift{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(30px,-25px) scale(1.12)}}
.bg-fx .petal{position:absolute;width:10px;height:10px;border-radius:50% 0 50% 0;background:linear-gradient(135deg,#F9A8D4,#EC4899);opacity:.7;animation:fall linear infinite}
@keyframes fall{
  0%{transform:translateY(-10vh) rotate(0deg);opacity:0}
  10%{opacity:.7}
  90%{opacity:.7}
  100%{transform:translateY(110vh) rotate(360deg);opacity:0}
}

.wrap{max-width:880px;margin:0 auto;padding:0 16px}

/* ===== Nav ===== */
.nav{position:sticky;top:0;z-index:50;background:rgba(10,4,16,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:880px;margin:0 auto;padding:10px 16px;display:flex;align-items:center;justify-content:space-between;gap:10px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px}
.brand img{width:32px;height:32px;border-radius:8px}
.brand b{color:#fff}
.nav-links{display:flex;gap:14px;align-items:center;margin:0 auto 0 6px}
.nav-links a{font-size:13px;color:var(--muted);line-height:1}
.nav-links a:hover{color:var(--pink)}
.nav-cta{background:var(--grad);color:#fff;font-size:14px;font-weight:600;padding:13px 18px;border-radius:20px;box-shadow:0 4px 18px rgba(236,72,153,.5);display:inline-flex;align-items:center;min-height:44px;line-height:1.2}

/* ===== Hero ===== */
.hero{padding:44px 0 30px;text-align:center}
.hero .tagline{display:inline-block;font-size:13px;color:var(--pink);letter-spacing:2px;margin-bottom:14px;font-weight:500}
.hero .tagline::before{content:"✦ ";color:var(--pink)}
.hero h1{font-size:clamp(30px,8.5vw,48px);line-height:1.2;margin-bottom:14px;font-weight:800}
.hero h1 span{background:var(--grad-2);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--muted);font-size:15px;max-width:540px;margin:0 auto 22px}
.hero .btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:24px}
.btn-main{background:var(--grad);color:#fff;font-size:16px;font-weight:700;padding:14px 32px;border-radius:14px;box-shadow:0 8px 28px rgba(236,72,153,.5);display:inline-flex;align-items:center;gap:8px}
.btn-ghost{background:rgba(167,139,250,.12);border:1px solid var(--line);color:var(--text);font-size:16px;font-weight:600;padding:14px 24px;border-radius:14px}
.hero-meta{font-size:12px;color:var(--muted);display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:28px}
.hero-meta span::before{content:"✓ ";color:var(--gold)}
.hero-phone{max-width:280px;margin:0 auto;position:relative}
.hero-phone .frame{background:linear-gradient(160deg,#241030,#0f0518);border:1px solid var(--line);border-radius:36px;padding:12px;box-shadow:var(--shadow),0 0 70px rgba(236,72,153,.3)}
.hero-phone .screen{border-radius:26px;overflow:hidden;background:#0f0518}
.hero-phone .screen img{width:100%;height:auto}

/* ===== Live bar ===== */
.livebar{background:linear-gradient(90deg,rgba(236,72,153,.15),rgba(167,139,250,.12));border:1px solid var(--line);border-radius:14px;padding:12px 16px;display:flex;align-items:center;gap:14px;font-size:13px;margin:8px 0 22px;flex-wrap:wrap}
.livebar .tag{background:var(--rose);color:#fff;font-weight:700;font-size:11px;padding:3px 10px;border-radius:10px;flex-shrink:0}
.livebar .info{flex:1;min-width:0}
.livebar .info b{color:var(--pink)}
.livebar .mini{color:var(--muted);font-size:11px}

/* ===== Section ===== */
.sec{padding:30px 0}
.sec-h{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.sec-h .bar{width:4px;height:22px;border-radius:2px;background:var(--grad-2)}
.sec-h h2{font-size:20px;font-weight:700}
.sec-h .more{margin-left:auto;font-size:12px;color:var(--pink)}

/* ===== Feature blocks ===== */
.feats{display:flex;flex-direction:column;gap:14px}
.feat{display:flex;gap:16px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;backdrop-filter:blur(8px);align-items:flex-start}
.feat .ic{width:52px;height:52px;border-radius:14px;background:var(--grad);display:flex;align-items:center;justify-content:center;font-size:24px;flex-shrink:0}
.feat .body{flex:1;min-width:0}
.feat h3{font-size:15px;margin-bottom:5px;font-weight:700}
.feat p{font-size:13px;color:var(--muted);line-height:1.65}

/* ===== Character showcase ===== */
.char-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.char-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;text-align:center;backdrop-filter:blur(8px)}
.char-card .av{width:60px;height:60px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-size:26px;margin:0 auto 10px;border:2px solid rgba(255,255,255,.12)}
.char-card h3{font-size:15px;margin-bottom:4px;font-weight:700}
.char-card .tag{display:inline-block;font-size:11px;color:var(--pink);background:rgba(236,72,153,.1);padding:2px 8px;border-radius:8px;margin-bottom:6px}
.char-card p{font-size:12px;color:var(--muted);line-height:1.55}

/* ===== Stats band ===== */
.stats-band{display:flex;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;backdrop-filter:blur(8px)}
.stats-band .stat{flex:1;text-align:center;padding:18px 6px;border-right:1px solid var(--line)}
.stats-band .stat:last-child{border-right:none}
.stats-band .stat .num{font-size:22px;font-weight:800;background:var(--grad-pink);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.2}
.stats-band .stat .lbl{font-size:11px;color:var(--muted);margin-top:4px}

/* ===== Screenshots grid ===== */
.shot-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.shot-grid img{border-radius:12px;border:1px solid var(--line);width:100%;height:auto}

/* ===== Steps ===== */
.steps{display:flex;flex-direction:column;gap:0;position:relative}
.steps::before{content:"";position:absolute;left:24px;top:10px;bottom:10px;width:2px;background:linear-gradient(var(--rose),var(--lav))}
.step{display:flex;gap:14px;padding:12px 0;position:relative}
.step .n{width:48px;height:48px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-weight:800;flex-shrink:0;color:#fff;z-index:1;box-shadow:0 0 0 4px var(--bg)}
.step .body{flex:1;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px 14px}
.step h3{font-size:14px;margin-bottom:2px;font-weight:600}
.step p{font-size:12.5px;color:var(--muted)}

/* ===== Comparison cards ===== */
.cmp-cards{display:grid;grid-template-columns:1fr;gap:12px}
.cmp-card{display:flex;gap:12px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px}
.cmp-card .feat{font-size:12px;color:var(--muted);flex:0 0 30%;line-height:1.4}
.cmp-card .us{flex:1;font-size:13px;font-weight:600;color:var(--pink)}
.cmp-card .us::before{content:"✓ "}
.cmp-card .them{flex:1;font-size:13px;color:#64748B}
.cmp-card .them::before{content:"✕ ";opacity:.7}

/* ===== Safety ===== */
.safe{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.safe .item{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;text-align:center}
.safe .item .ic{font-size:24px;margin-bottom:6px}
.safe .item h3{font-size:13px;margin-bottom:2px;font-weight:600}
.safe .item p{font-size:11px;color:var(--muted)}

/* ===== Voices ===== */
.voices{display:grid;gap:12px}
.voice{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;display:flex;gap:12px}
.voice .av{width:44px;height:44px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;flex-shrink:0}
.voice .body{flex:1}
.voice .body .top{display:flex;align-items:center;gap:8px;margin-bottom:4px}
.voice .body .name{font-size:14px;font-weight:600}
.voice .body .stars{color:var(--gold);font-size:12px}
.voice .body p{font-size:13px;color:var(--muted)}
.voice .body .role{font-size:11px;color:var(--pink);margin-top:4px}

/* ===== FAQ ===== */
.faq{display:flex;flex-direction:column;gap:10px}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.faq summary{padding:14px 16px;font-size:14px;font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:10px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--pink);font-size:20px;flex-shrink:0;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .ans{padding:0 16px 16px;font-size:13px;color:var(--muted);line-height:1.7}

/* ===== Related search ===== */
.related{display:flex;flex-wrap:wrap;gap:8px}
.related a{background:rgba(236,72,153,.08);border:1px solid rgba(236,72,153,.25);color:var(--text);font-size:12.5px;padding:12px 16px;border-radius:20px;transition:background .2s;line-height:1.4;min-height:44px;display:inline-flex;align-items:center}
.related a:hover{background:rgba(236,72,153,.18)}

/* ===== CTA ===== */
.cta{background:linear-gradient(135deg,rgba(236,72,153,.18),rgba(167,139,250,.15));border:1px solid var(--line);border-radius:22px;padding:34px 20px;text-align:center;margin:30px 0}
.cta h2{font-size:22px;margin-bottom:8px}
.cta p{color:var(--muted);font-size:14px;margin-bottom:18px}
.cta .note{font-size:11px;color:var(--muted);margin-top:10px}

/* ===== Footer ===== */
.footer{border-top:1px solid var(--line);padding:24px 0 16px;text-align:center;color:var(--muted);font-size:12px}
.footer .links{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:10px}
.footer .links a{color:var(--muted)}
.footer .links a:hover{color:var(--pink)}
.footer p{margin:4px 0}

/* ===== Dock ===== */
.dock{position:fixed;bottom:0;left:0;right:0;z-index:60;background:rgba(10,4,16,.94);backdrop-filter:blur(16px);border-top:1px solid var(--line);padding:10px 16px;display:flex;align-items:center;gap:12px}
.dock .logo{display:flex;align-items:center;gap:8px;flex:1;min-width:0}
.dock .logo img{width:40px;height:40px;border-radius:10px}
.dock .logo .t{font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dock .logo .s{font-size:11px;color:var(--muted)}
.dock .dl{background:var(--grad);color:#fff;font-weight:700;font-size:15px;padding:11px 22px;border-radius:13px;box-shadow:0 6px 20px rgba(236,72,153,.5);flex-shrink:0;white-space:nowrap}

/* ===== Toast ===== */
.toast{position:fixed;bottom:92px;left:50%;transform:translateX(-50%) translateY(20px);background:rgba(20,8,32,.96);border:1px solid var(--line);color:var(--text);padding:10px 18px;border-radius:24px;font-size:13px;opacity:0;pointer-events:none;transition:all .3s;z-index:70;white-space:nowrap;max-width:90vw;overflow:hidden;text-overflow:ellipsis}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast b{color:var(--pink)}

/* ===== Article pages ===== */
.crumb{font-size:12px;color:var(--muted);padding:14px 0 4px}
.crumb a{color:var(--pink)}
.crumb span{margin:0 6px}
.article{padding:10px 0 30px}
.article h1{font-size:24px;margin-bottom:10px;line-height:1.35}
.article .meta{font-size:12px;color:var(--muted);margin-bottom:20px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.article h2{font-size:18px;margin:26px 0 10px;padding-left:10px;border-left:3px solid var(--rose)}
.article p{font-size:14.5px;color:#D8CCE8;margin-bottom:14px;line-height:1.85}
.article ul{margin:10px 0 14px;padding-left:4px}
.article ul li{font-size:14px;color:#D8CCE8;padding:6px 0 6px 22px;position:relative}
.article ul li::before{content:"▹";position:absolute;left:0;color:var(--pink)}
.article .box{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;margin:16px 0}
.article .box p{margin-bottom:0}

/* ===== Desktop tweaks ===== */
@media(min-width:640px){
  .stats-band .stat .num{font-size:26px}
  .char-grid{grid-template-columns:repeat(3,1fr)}
  .safe{grid-template-columns:repeat(4,1fr)}
  .voices{grid-template-columns:repeat(2,1fr)}
  .shot-grid{grid-template-columns:repeat(4,1fr)}
}