/* =========================================================
   夜色AI · 官网样式
   配色取自品牌 logo：深靛紫夜空 + 月光品红渐变 + 星光白
   ========================================================= */

:root{
  --bg: #0c0620;
  --bg-2: #150c33;
  --bg-3: #1b1040;
  --card: rgba(255,255,255,.055);
  --card-2: rgba(255,255,255,.028);
  --line: rgba(255,255,255,.09);
  --line-2: rgba(255,255,255,.05);
  --text: #f5f0ff;
  --muted: #b7abd8;
  --dim: #8c7fb3;
  --pink: #ff6ec7;
  --pink-hot: #ff2f95;
  --violet: #9b5cf6;
  --violet-2: #7c3aed;
  --cyan: #64e8ff;
  --grad: linear-gradient(115deg,#ff5fb6 0%,#c04bff 52%,#7a5cff 100%);
  --grad-text: linear-gradient(100deg,#ffe4f7 0%,#ff9bdd 38%,#c9a5ff 72%,#8fd8ff 100%);
  --radius: 24px;
  --shadow-lg: 0 40px 100px -30px rgba(0,0,0,.8);
  --head-h: 76px;
}

*,*::before,*::after{ box-sizing:border-box; }

html{ scroll-behavior:smooth; scroll-padding-top:100px; -webkit-text-size-adjust:100%; overflow-x:hidden; }

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

/* 夜空底纹 */
body::before{
  content:"";
  position:fixed; inset:0;
  background:url("../img/stars.svg") repeat;
  opacity:.55;
  pointer-events:none;
  z-index:0;
}
body::after{
  content:"";
  position:fixed; inset:0;
  background:
    radial-gradient(900px 600px at 12% -8%, rgba(255,78,174,.14), transparent 65%),
    radial-gradient(1000px 700px at 92% 12%, rgba(155,92,246,.18), transparent 62%),
    radial-gradient(800px 600px at 50% 108%, rgba(100,232,255,.08), transparent 60%);
  pointer-events:none;
  z-index:0;
}

main, .site-foot, .site-head{ position:relative; z-index:1; }

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
h1,h2,h3,h4,p,ul,figure{ margin:0; }
ul{ padding:0; list-style:none; }

.wrap{ width:100%; max-width:1180px; margin:0 auto; padding:0 24px; }

::selection{ background:rgba(255,110,199,.35); color:#fff; }

:focus-visible{ outline:2px solid var(--pink); outline-offset:3px; border-radius:6px; }

/* ===================== 顶部导航 ===================== */
.site-head{
  position:fixed; top:16px; left:0; right:0; z-index:100;
  transition:top .3s ease;
}
.head-inner{
  width:calc(100% - 32px);
  max-width:1180px;
  margin:0 auto;
  display:flex; align-items:center; gap:18px;
  padding:10px 12px 10px 18px;
  border-radius:22px;
  border:1px solid rgba(255,255,255,.08);
  background:linear-gradient(120deg, rgba(23,13,52,.72), rgba(13,7,31,.62));
  backdrop-filter:blur(22px) saturate(150%);
  -webkit-backdrop-filter:blur(22px) saturate(150%);
  box-shadow:0 18px 50px -24px rgba(0,0,0,.8), inset 0 1px 0 rgba(255,255,255,.08);
  transition:background .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.site-head.scrolled .head-inner{
  background:linear-gradient(120deg, rgba(20,11,46,.92), rgba(11,6,27,.88));
  border-color:rgba(255,110,199,.18);
  box-shadow:0 22px 60px -26px rgba(0,0,0,.9), 0 0 0 1px rgba(255,110,199,.06), inset 0 1px 0 rgba(255,255,255,.07);
}

.brand{ display:flex; align-items:center; gap:11px; flex:0 0 auto; }
.brand img{ width:40px; height:40px; border-radius:12px; box-shadow:0 8px 22px -8px rgba(255,78,174,.75); }
.brand-t{ display:flex; flex-direction:column; line-height:1.15; }
.brand-t b{ font-size:17px; letter-spacing:.04em; }
.brand-t small{ font-size:9px; letter-spacing:.22em; color:var(--dim); font-weight:600; }

.nav{ display:flex; align-items:center; gap:4px; margin-left:auto; }
.nav a{
  position:relative;
  padding:8px 14px;
  font-size:14px;
  color:var(--muted);
  border-radius:100px;
  transition:color .25s ease, background .25s ease;
}
.nav a:hover{ color:#fff; background:rgba(255,255,255,.06); }
.nav a.on{ color:#fff; }
.nav a.on::after{
  content:""; position:absolute; left:50%; bottom:2px;
  width:4px; height:4px; margin-left:-2px;
  border-radius:50%; background:var(--pink);
  box-shadow:0 0 10px 2px rgba(255,110,199,.9);
}

.head-actions{ display:flex; align-items:center; gap:10px; }
.menu-btn{ display:none; width:42px; height:42px; border-radius:14px; border:1px solid var(--line); position:relative; }
.menu-btn span{
  position:absolute; left:12px; width:18px; height:2px; border-radius:2px;
  background:var(--text); transition:transform .3s ease, opacity .3s ease;
}
.menu-btn span:nth-child(1){ top:15px; }
.menu-btn span:nth-child(2){ top:20px; }
.menu-btn span:nth-child(3){ top:25px; }
.site-head.nav-open .menu-btn span:nth-child(1){ transform:translateY(5px) rotate(45deg); }
.site-head.nav-open .menu-btn span:nth-child(2){ opacity:0; }
.site-head.nav-open .menu-btn span:nth-child(3){ transform:translateY(-5px) rotate(-45deg); }

/* ===================== 按钮 ===================== */
.btn{
  position:relative;
  display:inline-flex; align-items:center; justify-content:center; gap:11px;
  padding:13px 24px;
  border-radius:15px;
  font-weight:700;
  font-size:15px;
  line-height:1.2;
  letter-spacing:.01em;
  white-space:nowrap;
  transition:transform .25s cubic-bezier(.2,.8,.2,1), box-shadow .25s ease, background .25s ease, border-color .25s ease;
  overflow:hidden;
  isolation:isolate;
}
.btn-sm{ padding:10px 18px; font-size:14px; border-radius:12px; }
.btn-lg{ padding:16px 26px; font-size:16px; border-radius:17px; }
.btn-xl{ padding:18px 30px; font-size:17px; border-radius:18px; }

.btn-primary{
  color:#fff;
  background:var(--grad);
  background-size:150% 150%;
  box-shadow:
    0 16px 40px -12px rgba(255,47,149,.65),
    0 6px 18px -8px rgba(124,58,237,.7),
    inset 0 1px 0 rgba(255,255,255,.35),
    inset 0 -1px 0 rgba(0,0,0,.18);
}
.btn-primary::before{
  content:""; position:absolute; inset:0; z-index:-1;
  background:linear-gradient(115deg,transparent 25%,rgba(255,255,255,.42) 48%,transparent 62%);
  transform:translateX(-130%);
  transition:transform .75s ease;
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:
    0 22px 50px -12px rgba(255,47,149,.8),
    0 8px 24px -8px rgba(124,58,237,.8),
    inset 0 1px 0 rgba(255,255,255,.4);
}
.btn-primary:hover::before{ transform:translateX(130%); }
.btn-primary:active{ transform:translateY(0); }

.btn-ios{
  color:#ffe9f8;
  background:linear-gradient(150deg, rgba(255,255,255,.08), rgba(255,255,255,.03));
  border:1px solid rgba(255,150,225,.42);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.12),
    0 12px 30px -18px rgba(255,110,199,.6);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.btn-ios:hover{
  transform:translateY(-2px);
  background:linear-gradient(150deg, rgba(255,110,199,.18), rgba(155,92,246,.1));
  border-color:rgba(255,150,225,.8);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.16),
    0 18px 38px -18px rgba(255,110,199,.85);
}
.btn-ios:active{ transform:translateY(0); }

.btn-ic{ display:inline-flex; width:22px; height:22px; flex:0 0 auto; }
.btn-ic svg{ width:100%; height:100%; }
.btn-t{ display:inline-flex; flex-direction:column; align-items:flex-start; line-height:1.25; text-align:left; }
.btn-t small{ font-size:11px; font-weight:500; opacity:.78; letter-spacing:.04em; margin-top:1px; }

/* ===================== Hero ===================== */
.hero{
  position:relative;
  padding:calc(var(--head-h) + 78px) 0 40px;
  overflow:hidden;
}
.hero-bg{ position:absolute; inset:0; pointer-events:none; z-index:0; }
.aurora{
  position:absolute; border-radius:50%; filter:blur(100px); opacity:.6;
  animation:auroraMove 16s ease-in-out infinite alternate;
}
.a1{ width:520px; height:520px; left:-140px; top:-80px; background:radial-gradient(circle,rgba(255,79,168,.55),transparent 68%); }
.a2{ width:620px; height:620px; right:-160px; top:40px; background:radial-gradient(circle,rgba(139,92,246,.55),transparent 68%); animation-delay:-5s; }
.a3{ width:520px; height:420px; left:38%; bottom:-220px; background:radial-gradient(circle,rgba(100,232,255,.28),transparent 70%); animation-delay:-9s; }

.grid-glow{
  position:absolute; left:-10%; right:-10%; bottom:-8%; height:48%;
  background-image:
    linear-gradient(rgba(155,92,246,.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(155,92,246,.16) 1px, transparent 1px);
  background-size:58px 58px;
  transform:perspective(560px) rotateX(60deg);
  transform-origin:bottom center;
  -webkit-mask-image:linear-gradient(to top, #000 5%, transparent 78%);
  mask-image:linear-gradient(to top, #000 5%, transparent 78%);
  opacity:.7;
}

.moon-deco{
  position:absolute; right:6%; top:4%;
  opacity:.35; filter:drop-shadow(0 0 60px rgba(255,110,199,.55));
  animation:floatY 9s ease-in-out infinite;
}
.moon-deco svg{ width:240px; height:240px; }

.hero-star{ position:absolute; width:2px; height:2px; background:#fff; border-radius:50%; box-shadow:0 0 10px 3px rgba(255,255,255,.75); animation:twinkle 3.6s ease-in-out infinite; }
.hero-star.s1{ left:8%; top:26%; }
.hero-star.s2{ left:46%; top:16%; animation-delay:-1.2s; }
.hero-star.s3{ right:16%; top:58%; animation-delay:-2.1s; }
.hero-star.s4{ left:30%; bottom:14%; animation-delay:-.6s; }

.hero-grid{
  position:relative; z-index:1;
  display:grid;
  grid-template-columns:1.04fr .96fr;
  gap:56px;
  align-items:center;
}

.eyebrow{
  display:inline-flex; align-items:center; gap:9px;
  padding:7px 15px 7px 11px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.045);
  border-radius:100px;
  font-size:11.5px; letter-spacing:.16em; color:#e8dcff; text-transform:uppercase;
  font-weight:600;
  backdrop-filter:blur(10px);
}
.pulse-dot{
  width:7px; height:7px; border-radius:50%; background:var(--pink);
  box-shadow:0 0 0 0 rgba(255,110,199,.7);
  animation:pulse 2.2s ease-out infinite;
}
.sep-dot{ display:inline-block; width:5px; height:5px; border-radius:50%; background:currentColor; opacity:.65; vertical-align:middle; }

.hero h1{ margin:22px 0 0; font-weight:800; letter-spacing:-.03em; }
.h1-logo{
  display:block;
  font-size:clamp(52px,7.4vw,92px);
  line-height:.98;
  background:var(--grad-text);
  -webkit-background-clip:text; background-clip:text; color:transparent;
  filter:drop-shadow(0 10px 40px rgba(255,110,199,.25));
}
.h1-line{
  display:block;
  margin-top:20px;
  font-size:clamp(25px,3.3vw,40px);
  line-height:1.28;
  font-weight:700;
  color:#efe7ff;
  letter-spacing:-.01em;
}
.h1-line em{
  font-style:normal;
  background:linear-gradient(100deg,#ff9bdd,#c9a5ff);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.lead{
  margin-top:22px;
  max-width:520px;
  color:var(--muted);
  font-size:15.5px;
  line-height:1.9;
}
.lead strong{ color:#fff; font-weight:600; }

.hero-cta{ display:flex; flex-wrap:wrap; gap:14px; margin-top:32px; }
.cta-meta{ margin-top:14px; font-size:12.5px; color:var(--dim); letter-spacing:.02em; }

.trust{ display:flex; flex-wrap:wrap; gap:10px 22px; margin-top:24px; }
.trust li{
  position:relative; padding-left:16px;
  font-size:12.5px; color:var(--muted);
}
.trust li::before{
  content:""; position:absolute; left:0; top:50%; width:6px; height:6px; margin-top:-3px;
  border-radius:50%; background:linear-gradient(135deg,var(--pink),var(--violet));
  box-shadow:0 0 8px rgba(255,110,199,.8);
}

/* ===================== Hero 手机 ===================== */
.hero-visual{ position:relative; display:flex; justify-content:center; }
.phone-wrap{ position:relative; width:100%; max-width:360px; }
.phone{
  position:relative;
  width:100%;
  margin:0 auto;
  transform:rotate(-2.5deg);
  animation:floatY 8s ease-in-out infinite;
}
.phone-frame{
  position:relative;
  border-radius:46px;
  padding:9px;
  background:linear-gradient(160deg,#3a2470,#140b2e 55%,#2a1650);
  border:1px solid rgba(255,255,255,.14);
  box-shadow:
    0 50px 110px -30px rgba(0,0,0,.95),
    0 0 0 1px rgba(255,255,255,.05),
    0 0 90px -10px rgba(255,79,168,.35),
    inset 0 1px 0 rgba(255,255,255,.18);
}
.phone-glow{
  position:absolute; inset:12% 4% -6%; z-index:-1;
  background:radial-gradient(ellipse at center, rgba(255,79,168,.4), rgba(124,58,237,.22) 45%, transparent 72%);
  filter:blur(46px);
}
.phone-screen{
  position:relative;
  border-radius:37px;
  overflow:hidden;
  background:linear-gradient(175deg,#160d33 0%,#100826 48%,#0b0520 100%);
  border:1px solid rgba(255,255,255,.06);
  display:flex; flex-direction:column;
  height:598px;
}
.p-status{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 22px 4px;
  font-size:11px; font-weight:600; color:#d9cff5;
  letter-spacing:.02em;
}
.p-status-r{ display:inline-flex; align-items:center; gap:6px; font-size:10px; }
.bat{ width:17px; height:9px; border-radius:2.5px; border:1px solid rgba(255,255,255,.5); position:relative; }
.bat::before{ content:""; position:absolute; inset:1.5px; right:5px; border-radius:1px; background:#d9cff5; }

.p-head{
  display:flex; align-items:center; gap:10px;
  padding:12px 18px 12px;
  border-bottom:1px solid rgba(255,255,255,.06);
  background:linear-gradient(180deg, rgba(255,255,255,.04), transparent);
}
.p-head img{ width:42px; height:42px; border-radius:50%; object-fit:cover; border:1.5px solid rgba(255,150,225,.55); box-shadow:0 0 16px rgba(255,110,199,.35); }
.p-head-t{ display:flex; flex-direction:column; line-height:1.3; }
.p-head-t b{ font-size:13.5px; letter-spacing:.03em; }
.p-head-t small{ font-size:10px; color:var(--dim); display:flex; align-items:center; gap:5px; }
.p-head-t .on{ width:5px; height:5px; border-radius:50%; background:#5ee6a8; box-shadow:0 0 7px rgba(94,230,168,.9); }
.p-more{ margin-left:auto; display:flex; gap:3px; }
.p-more i{ width:3px; height:3px; border-radius:50%; background:rgba(255,255,255,.5); }

.p-chat{
  flex:1;
  padding:16px 14px;
  display:flex; flex-direction:column; justify-content:flex-end; gap:11px;
  overflow:hidden;
  background:
    radial-gradient(120px 120px at 100% 0%, rgba(155,92,246,.16), transparent 70%),
    radial-gradient(140px 140px at 0% 100%, rgba(255,110,199,.1), transparent 70%);
}
.msg{ display:flex; align-items:flex-end; gap:7px; animation:msgIn .45s cubic-bezier(.2,.8,.2,1) both; }
.msg img{ width:28px; height:28px; border-radius:50%; object-fit:cover; flex:0 0 auto; }
.msg .bubble{
  max-width:80%;
  padding:9px 12px;
  font-size:12.5px;
  line-height:1.6;
  color:#efe9ff;
  background:rgba(255,255,255,.075);
  border:1px solid rgba(255,255,255,.06);
  border-radius:15px 15px 15px 4px;
}
.msg.me{ justify-content:flex-end; }
.msg.me .bubble{
  background:linear-gradient(135deg,rgba(255,79,168,.9),rgba(144,79,247,.9));
  border-color:rgba(255,255,255,.15);
  color:#fff;
  border-radius:15px 15px 4px 15px;
  box-shadow:0 10px 24px -12px rgba(255,79,168,.9);
}
.typing{ display:flex; gap:4px; align-items:center; padding:10px 13px; background:rgba(255,255,255,.075); border-radius:15px 15px 15px 4px; width:max-content; }
.typing i{ width:5px; height:5px; border-radius:50%; background:#cbb9ee; animation:typing 1.2s infinite; }
.typing i:nth-child(2){ animation-delay:.15s; }
.typing i:nth-child(3){ animation-delay:.3s; }

.p-input{
  display:flex; align-items:center; gap:8px;
  margin:0 14px 14px;
  padding:9px 9px 9px 15px;
  border-radius:100px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.07);
}
.p-input-t{ font-size:11.5px; color:var(--dim); flex:1; }
.p-send{
  width:30px; height:30px; border-radius:50%;
  display:grid; place-items:center;
  background:var(--grad);
  box-shadow:0 6px 16px -6px rgba(255,79,168,.9);
}
.p-send svg{ width:14px; height:14px; color:#fff; }
.p-home{ width:110px; height:4px; border-radius:4px; background:rgba(255,255,255,.22); margin:0 auto 9px; }

/* 浮层卡片 */
.float-card{
  position:absolute; z-index:3;
  display:flex; align-items:center; gap:9px;
  padding:11px 14px;
  border-radius:16px;
  background:linear-gradient(140deg, rgba(30,18,64,.92), rgba(16,9,38,.88));
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 20px 40px -18px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.1);
  backdrop-filter:blur(14px);
  font-size:11.5px;
  animation:floatY 6.5s ease-in-out infinite;
}
.float-card b{ display:block; font-size:13px; line-height:1.25; }
.float-card small{ display:block; font-size:9.5px; color:var(--dim); letter-spacing:.02em; }
.fc-memory{ left:-72px; top:172px; animation-delay:-1.4s; }
.fc-online{ right:-40px; top:246px; flex-direction:column; gap:1px; align-items:flex-start; animation-delay:-3s; }
.fc-online b{ font-size:20px; background:var(--grad-text); -webkit-background-clip:text; background-clip:text; color:transparent; }
.fc-free{ left:-102px; bottom:118px; flex-direction:column; gap:1px; align-items:flex-start; animation-delay:-2.1s; }
.fc-free b{ font-size:20px; background:var(--grad-text); -webkit-background-clip:text; background-clip:text; color:transparent; }
.fc-ic{ width:30px; height:30px; border-radius:10px; background:rgba(255,110,199,.16); border:1px solid rgba(255,110,199,.35); position:relative; flex:0 0 auto; }
.ic-mem::before, .ic-mem::after{ content:""; position:absolute; border-radius:50%; border:1.5px solid rgba(255,180,235,.9); }
.ic-mem::before{ inset:7px; }
.ic-mem::after{ inset:11px; border-color:rgba(155,92,246,.9); }

/* ===================== 数据条 ===================== */
.stats{ padding:16px 0 8px; }
.stats-bar{
  display:grid; grid-template-columns:repeat(4,1fr);
  gap:8px;
  padding:26px 18px;
  border-radius:26px;
  background:linear-gradient(140deg, rgba(255,255,255,.06), rgba(255,255,255,.015));
  border:1px solid var(--line);
  box-shadow:0 30px 70px -40px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(14px);
}
.stat{ text-align:center; position:relative; padding:4px 8px; }
.stat + .stat::before{ content:""; position:absolute; left:0; top:22%; height:56%; width:1px; background:linear-gradient(transparent,rgba(255,255,255,.16),transparent); }
.stat b{
  display:block;
  font-size:clamp(26px,3vw,38px);
  line-height:1.1;
  font-weight:800;
  letter-spacing:-.02em;
  background:var(--grad-text);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.stat span{ display:block; margin-top:7px; font-size:12px; color:var(--dim); letter-spacing:.06em; }

/* ===================== 通用 section ===================== */
.section{ position:relative; padding:104px 0 0; }
.sec-head{ max-width:760px; margin:0 auto 46px; text-align:center; }
.kicker{
  display:inline-flex; align-items:center; gap:10px;
  font-size:11px; font-weight:700; letter-spacing:.26em; text-transform:uppercase;
  color:#ffaee2;
}
.kicker::before, .kicker::after{ content:""; width:26px; height:1px; background:linear-gradient(90deg,transparent,rgba(255,150,225,.7)); }
.kicker::after{ background:linear-gradient(90deg,rgba(255,150,225,.7),transparent); }
.sec-head h2{
  margin-top:16px;
  font-size:clamp(28px,3.8vw,44px);
  line-height:1.3;
  font-weight:800;
  letter-spacing:-.02em;
}
.sec-head h2 em{
  font-style:normal;
  background:var(--grad-text);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.sec-sub{ margin-top:14px; color:var(--muted); font-size:14.5px; line-height:1.85; }

/* ===================== 功能卡片 ===================== */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
}
.card{
  position:relative;
  padding:28px 26px 30px;
  border-radius:var(--radius);
  background:linear-gradient(165deg, rgba(255,255,255,.062), rgba(255,255,255,.018));
  border:1px solid var(--line);
  overflow:hidden;
  transition:transform .35s cubic-bezier(.2,.8,.2,1), border-color .35s ease, box-shadow .35s ease, background .35s ease;
}
.card::before{
  content:""; position:absolute; inset:0;
  background:radial-gradient(420px 240px at var(--cx,80%) var(--cy,0%), rgba(255,110,199,.16), transparent 70%);
  opacity:0; transition:opacity .4s ease; pointer-events:none;
}
.card:hover{
  transform:translateY(-5px);
  border-color:rgba(255,140,220,.34);
  box-shadow:0 30px 60px -34px rgba(255,79,168,.5), 0 0 0 1px rgba(255,110,199,.08) inset;
}
.card:hover::before{ opacity:1; }
.card-ic{
  display:grid; place-items:center;
  width:46px; height:46px;
  border-radius:14px;
  background:linear-gradient(150deg, rgba(255,110,199,.18), rgba(155,92,246,.14));
  border:1px solid rgba(255,150,225,.26);
  color:#ffc3ec;
  margin-bottom:18px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14);
}
.card-ic svg{ width:23px; height:23px; }
.card h3{ font-size:17.5px; font-weight:700; letter-spacing:.01em; }
.card p{ margin-top:9px; color:var(--muted); font-size:13.5px; line-height:1.85; }
.card-no{
  position:absolute; right:20px; bottom:8px;
  font-size:56px; font-weight:800; letter-spacing:-.05em;
  color:rgba(255,255,255,.035);
  pointer-events:none;
}
.tags{ display:flex; flex-wrap:wrap; gap:7px; margin-top:16px; }
.tags li{
  padding:3px 10px; border-radius:100px;
  font-size:10.5px; color:#ffc9ee;
  background:rgba(255,110,199,.1);
  border:1px solid rgba(255,150,225,.22);
}
.mem-demo{
  margin-top:16px;
  padding:10px 12px;
  border-radius:12px;
  background:rgba(255,255,255,.04);
  border:1px dashed rgba(255,150,225,.25);
  font-size:11px;
  color:#e7d9ff;
  display:flex; flex-direction:column; gap:4px;
}
.mem-demo i{ font-style:normal; font-size:9.5px; color:#7ff0c0; letter-spacing:.06em; }
.avatar-stack{ display:flex; align-items:center; margin-top:18px; }
.avatar-stack img{ width:36px; height:36px; border-radius:50%; object-fit:cover; border:2px solid #1a1038; margin-left:-9px; }
.avatar-stack img:first-child{ margin-left:0; }
.avatar-stack span{
  margin-left:9px; font-size:11px; color:var(--dim);
  padding:3px 9px; border-radius:100px; border:1px solid var(--line);
}

/* ===================== 界面预览 ===================== */
.preview-grid{
  display:grid; grid-template-columns:repeat(3,1fr);
  gap:26px; align-items:end;
}
.shot{
  position:relative;
  display:flex; flex-direction:column; align-items:center;
  padding:26px 18px 20px;
  border-radius:26px;
  background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.012));
  border:1px solid var(--line);
  transition:transform .4s cubic-bezier(.2,.8,.2,1), border-color .4s ease, box-shadow .4s ease;
}
.shot:hover{
  transform:translateY(-8px);
  border-color:rgba(255,140,220,.32);
  box-shadow:0 40px 80px -44px rgba(255,79,168,.55);
}
.shot-mid{ transform:translateY(-16px); }
.shot-mid:hover{ transform:translateY(-24px); }
.mini-phone{
  width:100%; max-width:246px;
  border-radius:32px;
  padding:7px;
  background:linear-gradient(160deg,#3a2470,#170d33 60%,#261348);
  border:1px solid rgba(255,255,255,.13);
  box-shadow:0 30px 60px -28px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.15);
}
.mp-screen{
  border-radius:26px;
  background:linear-gradient(175deg,#150c31,#0c0622);
  overflow:hidden;
  height:418px;
  display:flex; flex-direction:column;
  border:1px solid rgba(255,255,255,.05);
}
.mp-head{
  display:flex; align-items:center; justify-content:space-between;
  padding:15px 16px 12px;
  font-size:12.5px; font-weight:700;
}
.mp-head span{ font-size:9.5px; color:#ffb3e4; font-weight:600; }
.mp-search{
  margin:0 14px 12px; padding:8px 12px; border-radius:100px;
  background:rgba(255,255,255,.055); border:1px solid rgba(255,255,255,.06);
  font-size:10px; color:var(--dim);
}
.mp-roles{ display:grid; grid-template-columns:1fr 1fr; gap:9px; padding:0 14px; }
.role{
  padding:8px 7px 9px;
  border-radius:13px;
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.055);
  text-align:center;
}
.role img{ width:100%; height:74px; object-fit:cover; border-radius:9px; }
.role b{ display:block; font-size:10.5px; margin-top:7px; }
.role small{ display:block; font-size:8.5px; color:var(--dim); }
.mp-tab{
  margin-top:auto;
  display:flex; justify-content:space-around; align-items:center;
  padding:13px 18px;
  border-top:1px solid rgba(255,255,255,.05);
}
.mp-tab i{ width:16px; height:16px; border-radius:5px; background:rgba(255,255,255,.14); }
.mp-tab i.t1{ background:linear-gradient(135deg,#ff6ec7,#9b5cf6); box-shadow:0 0 12px rgba(255,110,199,.6); }

.mp-chat-head{ display:flex; align-items:center; gap:8px; padding:15px 14px 12px; border-bottom:1px solid rgba(255,255,255,.05); }
.mp-chat-head img{ width:34px; height:34px; border-radius:50%; object-fit:cover; border:1px solid rgba(255,150,225,.5); }
.mp-chat-head b{ display:block; font-size:11.5px; line-height:1.3; }
.mp-chat-head small{ display:block; font-size:8.5px; color:var(--dim); letter-spacing:.02em; }
.mp-chat{ flex:1; padding:15px 13px; display:flex; flex-direction:column; justify-content:flex-end; gap:9px; }
.mp-b{ max-width:84%; padding:7px 10px; border-radius:12px 12px 12px 4px; font-size:10.5px; line-height:1.65; color:#ede6ff; background:rgba(255,255,255,.07); }
.mp-b.me{ align-self:flex-end; background:linear-gradient(135deg,rgba(255,79,168,.88),rgba(144,79,247,.88)); color:#fff; border-radius:12px 12px 4px 12px; }
.mp-typing{ display:flex; gap:3px; padding:8px 11px; border-radius:12px 12px 12px 4px; background:rgba(255,255,255,.07); width:max-content; }
.mp-typing i{ width:4px; height:4px; border-radius:50%; background:#c9b7ee; animation:typing 1.2s infinite; }
.mp-typing i:nth-child(2){ animation-delay:.15s; }
.mp-typing i:nth-child(3){ animation-delay:.3s; }
.mp-input{
  margin:0 13px 14px; padding:9px 13px;
  border-radius:100px; background:rgba(255,255,255,.06);
  font-size:10px; color:var(--dim); border:1px solid rgba(255,255,255,.06);
}
.mp-form{ padding:0 15px; display:flex; flex-direction:column; gap:10px; }
.mp-row{
  padding-bottom:9px; border-bottom:1px solid rgba(255,255,255,.06);
  display:flex; flex-direction:column; gap:3px;
}
.mp-row span{ font-size:8.5px; color:var(--dim); letter-spacing:.08em; }
.mp-row b{ font-size:10.5px; font-weight:600; color:#efe8ff; line-height:1.5; }
.mp-save{
  margin-top:8px; padding:9px; text-align:center; border-radius:11px;
  font-size:10.5px; font-weight:700; color:#fff;
  background:var(--grad); box-shadow:0 10px 22px -12px rgba(255,79,168,.9);
}
.shot figcaption{
  margin-top:18px;
  font-size:12.5px; color:var(--muted);
  display:flex; align-items:center; gap:8px;
}
.shot figcaption b{
  font-size:10px; letter-spacing:.14em; color:#ffb3e4;
  padding:2px 7px; border-radius:6px;
  background:rgba(255,110,199,.12); border:1px solid rgba(255,150,225,.25);
}
.preview-note{ margin-top:30px; text-align:center; font-size:12px; color:var(--dim); }

/* ===================== 三步 ===================== */
.step-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:18px;
  position:relative;
}
.step{
  position:relative;
  padding:30px 26px;
  border-radius:var(--radius);
  background:linear-gradient(165deg, rgba(255,255,255,.055), rgba(255,255,255,.015));
  border:1px solid var(--line);
  transition:transform .35s ease, border-color .35s ease;
}
.step:hover{ transform:translateY(-4px); border-color:rgba(255,140,220,.3); }
.step-no{
  display:inline-block;
  font-size:12px; font-weight:800; letter-spacing:.16em;
  color:#ffb3e4;
  margin-bottom:14px;
}
.step-no::after{
  content:""; display:block; width:44px; height:2px; margin-top:8px;
  background:linear-gradient(90deg,#ff5fb6,rgba(155,92,246,0));
  border-radius:2px;
}
.step h3{ font-size:17px; }
.step p{ margin-top:10px; color:var(--muted); font-size:13.5px; line-height:1.85; }
.step-link{
  display:inline-flex; align-items:center; gap:6px;
  margin-top:16px; font-size:12.5px; font-weight:600; color:#ffa9e2;
}
.step-link svg{ width:14px; height:14px; transition:transform .25s ease; }
.step-link:hover svg{ transform:translateX(4px); }

/* ===================== 用户评价 ===================== */
.review-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:18px; }
.review{
  padding:26px 22px;
  border-radius:22px;
  background:linear-gradient(165deg, rgba(255,255,255,.055), rgba(255,255,255,.014));
  border:1px solid var(--line);
  display:flex; flex-direction:column;
  transition:transform .35s ease, border-color .35s ease, box-shadow .35s ease;
}
.review:hover{
  transform:translateY(-5px);
  border-color:rgba(255,140,220,.3);
  box-shadow:0 30px 60px -40px rgba(255,79,168,.6);
}
.stars{ display:flex; gap:3px; margin-bottom:14px; }
.stars i{
  width:13px; height:13px;
  background:linear-gradient(135deg,#ffd36e,#ff8f3f);
  clip-path:polygon(50% 0%,61% 35%,98% 35%,68% 57%,79% 91%,50% 70%,21% 91%,32% 57%,2% 35%,39% 35%);
}
.review p{ font-size:12.8px; line-height:1.9; color:#e4dbf7; flex:1; }
.review-by{ display:flex; align-items:center; gap:9px; margin-top:18px; }
.rav{
  width:34px; height:34px; border-radius:50%;
  display:grid; place-items:center;
  font-size:13px; font-weight:700; color:#fff;
  border:1px solid rgba(255,255,255,.16);
}
.rv1{ background:linear-gradient(135deg,#ff6ec7,#9b5cf6); }
.rv2{ background:linear-gradient(135deg,#64e8ff,#7c5cff); }
.rv3{ background:linear-gradient(135deg,#ffb36e,#ff4f8f); }
.rv4{ background:linear-gradient(135deg,#9b5cf6,#4f7cff); }
.review-by b{ display:block; font-size:12px; }
.review-by small{ display:block; font-size:10px; color:var(--dim); }

/* ===================== FAQ ===================== */
.faq-list{ max-width:860px; margin:0 auto; display:flex; flex-direction:column; gap:12px; }
.faq-item{
  border-radius:18px;
  background:linear-gradient(160deg, rgba(255,255,255,.05), rgba(255,255,255,.015));
  border:1px solid var(--line);
  overflow:hidden;
  transition:border-color .3s ease, background .3s ease;
}
.faq-item[open]{ border-color:rgba(255,140,220,.32); background:linear-gradient(160deg, rgba(255,110,199,.07), rgba(255,255,255,.015)); }
.faq-item summary{
  display:flex; align-items:center; gap:13px;
  padding:19px 22px;
  cursor:pointer;
  list-style:none;
  transition:background .25s ease;
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary:hover{ background:rgba(255,255,255,.03); }
.q-no{
  font-size:10px; font-weight:800; letter-spacing:.1em;
  color:#ffb3e4;
  padding:3px 7px; border-radius:6px;
  background:rgba(255,110,199,.12); border:1px solid rgba(255,150,225,.24);
  flex:0 0 auto;
}
.faq-item h3{ font-size:14.5px; font-weight:600; flex:1; line-height:1.5; }
.plus{ position:relative; width:18px; height:18px; flex:0 0 auto; }
.plus::before, .plus::after{
  content:""; position:absolute; top:50%; left:50%;
  background:#ffb3e4; border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform .3s ease, opacity .3s ease;
}
.plus::before{ width:13px; height:1.6px; }
.plus::after{ width:1.6px; height:13px; }
.faq-item[open] .plus::after{ transform:translate(-50%,-50%) rotate(90deg); opacity:0; }
.faq-a{ overflow:hidden; }
.faq-a p{
  padding:0 22px 20px 57px;
  font-size:13px; line-height:1.9; color:var(--muted);
}

/* ===================== 下载区 ===================== */
.download{ padding-top:110px; }
.dl-panel{
  position:relative;
  padding:58px 36px 52px;
  border-radius:34px;
  text-align:center;
  overflow:hidden;
  background:
    radial-gradient(600px 300px at 50% -10%, rgba(255,79,168,.22), transparent 70%),
    linear-gradient(165deg, rgba(255,255,255,.075), rgba(255,255,255,.02));
  border:1px solid rgba(255,150,225,.2);
  box-shadow:0 50px 120px -50px rgba(255,79,168,.5), inset 0 1px 0 rgba(255,255,255,.1);
}
.dl-panel .kicker{ color:#ffb9e6; }
.dl-logo{
  width:64px; height:64px; border-radius:19px; margin:0 auto 18px;
  box-shadow:0 18px 40px -14px rgba(255,79,168,.8);
}
.dl-panel h2{
  margin-top:14px;
  font-size:clamp(26px,3.4vw,40px);
  font-weight:800; letter-spacing:-.02em;
  background:var(--grad-text);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.dl-panel .sec-sub{ max-width:520px; margin:12px auto 0; }
.dl-actions{ display:flex; flex-wrap:wrap; justify-content:center; gap:14px; margin-top:32px; }
.dl-meta{ display:flex; flex-wrap:wrap; justify-content:center; gap:9px; margin-top:24px; }
.dl-meta li{
  padding:5px 13px; border-radius:100px;
  font-size:11px; color:var(--muted);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
}
.dl-note{ margin-top:22px; font-size:11.5px; color:var(--dim); }
.dl-note b{ color:#ffb9e6; font-weight:600; letter-spacing:.03em; }
.dl-glow{ position:absolute; border-radius:50%; filter:blur(70px); pointer-events:none; }
.dl-g1{ width:280px; height:280px; left:-90px; top:-60px; background:rgba(255,79,168,.28); }
.dl-g2{ width:320px; height:320px; right:-110px; bottom:-120px; background:rgba(124,58,237,.3); }
.dl-moon{
  position:absolute; right:6%; top:16%;
  width:120px; height:120px; border-radius:50%;
  background:radial-gradient(circle at 34% 36%, rgba(255,255,255,.55), rgba(255,150,225,.28) 45%, transparent 70%);
  filter:blur(2px);
  opacity:.55;
  pointer-events:none;
}

/* ===================== 页脚 ===================== */
.site-foot{
  margin-top:120px;
  padding:60px 0 28px;
  border-top:1px solid rgba(255,255,255,.07);
  background:linear-gradient(180deg, rgba(10,5,25,.2), rgba(8,4,20,.7));
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr .8fr .8fr 1.1fr;
  gap:36px;
}
.foot-brand p{ margin-top:16px; max-width:300px; font-size:12.5px; color:var(--muted); line-height:1.9; }
.foot-domain{
  display:inline-block; margin-top:16px;
  font-size:11.5px; letter-spacing:.12em; color:#ffb3e4;
  padding:5px 12px; border-radius:100px;
  background:rgba(255,110,199,.08);
  border:1px solid rgba(255,150,225,.22);
}
.foot-col{ display:flex; flex-direction:column; gap:10px; }
.foot-col h4{ font-size:12px; font-weight:700; letter-spacing:.14em; color:#efe8ff; margin-bottom:4px; }
.foot-col a{ font-size:12.5px; color:var(--muted); transition:color .22s ease, transform .22s ease; width:max-content; }
.foot-col a:hover{ color:#ffb3e4; transform:translateX(2px); }
.foot-tip p{ font-size:12px; color:var(--dim); line-height:1.9; }
.foot-bottom{
  display:flex; align-items:center; justify-content:space-between; gap:14px;
  margin-top:44px; padding-top:22px;
  border-top:1px solid rgba(255,255,255,.06);
  font-size:11.5px; color:var(--dim);
}
.foot-bottom a{ color:#c3b6e2; }
.foot-bottom a:hover{ color:#ffb3e4; }

/* ===================== 浮动组件 ===================== */
.mobile-bar{
  display:none;
  position:fixed; left:0; right:0; bottom:0; z-index:90;
  padding:10px 12px calc(10px + env(safe-area-inset-bottom));
  gap:9px;
  background:linear-gradient(180deg, rgba(12,6,32,.75), rgba(9,4,23,.97));
  border-top:1px solid rgba(255,255,255,.09);
  backdrop-filter:blur(18px);
}
.mobile-bar .btn-primary{ flex:1.25; }
.mobile-bar .btn-ios{ flex:1; }
.mobile-bar .btn{ padding:12px 14px; font-size:13.5px; border-radius:13px; }

.to-top{
  position:fixed; right:24px; bottom:28px; z-index:80;
  width:44px; height:44px; border-radius:50%;
  display:grid; place-items:center;
  background:rgba(24,13,54,.9);
  border:1px solid rgba(255,150,225,.35);
  color:#ffc3ec;
  box-shadow:0 16px 34px -16px rgba(0,0,0,.9);
  opacity:0; visibility:hidden; transform:translateY(10px);
  transition:opacity .3s ease, transform .3s ease, visibility .3s ease;
  backdrop-filter:blur(12px);
}
.to-top svg{ width:17px; height:17px; }
.to-top.show{ opacity:1; visibility:visible; transform:translateY(0); }
.to-top:hover{ border-color:rgba(255,150,225,.8); background:rgba(255,79,168,.2); }

/* ===================== 动效 ===================== */
.reveal{ opacity:0; transform:translateY(26px); transition:opacity .8s cubic-bezier(.2,.8,.2,1), transform .8s cubic-bezier(.2,.8,.2,1); }
.reveal.in{ opacity:1; transform:none; }

@keyframes floatY{ 0%,100%{ transform:translateY(0); } 50%{ transform:translateY(-12px); } }
@keyframes auroraMove{
  0%{ transform:translate3d(0,0,0) scale(1); }
  100%{ transform:translate3d(30px,40px,0) scale(1.12); }
}
@keyframes pulse{
  0%{ box-shadow:0 0 0 0 rgba(255,110,199,.65); }
  70%{ box-shadow:0 0 0 9px rgba(255,110,199,0); }
  100%{ box-shadow:0 0 0 0 rgba(255,110,199,0); }
}
@keyframes twinkle{ 0%,100%{ opacity:.25; transform:scale(.8); } 50%{ opacity:1; transform:scale(1.25); } }
@keyframes typing{ 0%,60%,100%{ transform:translateY(0); opacity:.45; } 30%{ transform:translateY(-3px); opacity:1; } }
@keyframes msgIn{ from{ opacity:0; transform:translateY(10px) scale(.97); } to{ opacity:1; transform:none; } }

/* ===================== 响应式 ===================== */
@media (max-width:1080px){
  .hero-grid{ gap:30px; }
  .hero{ padding-top:calc(var(--head-h) + 62px); }
  .float-card{ display:none; }
  .feature-grid{ grid-template-columns:repeat(2,1fr); }
  .review-grid{ grid-template-columns:repeat(2,1fr); }
  .foot-grid{ grid-template-columns:1.4fr 1fr 1fr; }
  .foot-tip{ grid-column:1 / -1; }
}

@media (max-width:900px){
  .nav{
    position:absolute; top:calc(100% + 10px); left:0; right:0;
    flex-direction:column; align-items:stretch; gap:2px;
    padding:10px;
    border-radius:20px;
    background:linear-gradient(160deg, rgba(26,15,58,.98), rgba(13,7,31,.98));
    border:1px solid rgba(255,255,255,.1);
    box-shadow:0 30px 60px -20px rgba(0,0,0,.9);
    display:none;
  }
  .site-head.nav-open .nav{ display:flex; }
  .nav a{ padding:12px 14px; font-size:14px; border-radius:12px; }
  .nav a.on{ background:rgba(255,110,199,.12); }
  .nav a.on::after{ display:none; }
  .menu-btn{ display:block; }
  .brand-t small{ display:none; }

  .hero-grid{ grid-template-columns:1fr; gap:44px; }
  .hero-copy{ text-align:center; }
  .lead{ margin-left:auto; margin-right:auto; }
  .hero-cta, .trust{ justify-content:center; }
  .hero-visual{ margin-top:6px; }
  .phone-wrap{ max-width:320px; }
  .moon-deco{ right:-40px; top:0; opacity:.25; }

  .preview-grid{ grid-template-columns:1fr; max-width:340px; margin:0 auto; gap:22px; }
  .shot-mid{ transform:none; }
  .shot-mid:hover{ transform:translateY(-8px); }
  .mp-screen{ height:400px; }
  .step-grid{ grid-template-columns:1fr; }
}

@media (max-width:760px){
  body{ padding-bottom:76px; }
  .hero{ padding-top:calc(var(--head-h) + 46px); }
  .h1-logo{ font-size:clamp(46px,13vw,64px); }
  .h1-line{ font-size:clamp(21px,5.6vw,28px); margin-top:16px; }
  .lead{ font-size:14.5px; }
  .hero-cta{ flex-direction:column; align-items:stretch; }
  .hero-cta .btn{ width:100%; }
  .btn-t{ align-items:center; }
  .cta-meta{ font-size:11.5px; }
  .trust{ gap:8px 16px; }
  .trust li{ font-size:11.5px; }

  .stats-bar{ grid-template-columns:repeat(2,1fr); gap:18px 8px; padding:22px 14px; }
  .stat:nth-child(3)::before{ display:none; }

  .section{ padding-top:78px; }
  .sec-head{ margin-bottom:34px; }
  .sec-sub{ font-size:13.5px; }

  .feature-grid{ grid-template-columns:1fr; gap:14px; }
  .card{ padding:24px 22px 26px; }

  .review-grid{ grid-template-columns:1fr; }

  .faq-item summary{ padding:16px 16px; gap:10px; }
  .faq-item h3{ font-size:13.5px; }
  .faq-a p{ padding:0 16px 16px 16px; font-size:12.5px; }

  .download{ padding-top:84px; }
  .dl-panel{ padding:40px 20px 36px; border-radius:26px; }
  .dl-actions{ flex-direction:column; }
  .dl-actions .btn{ width:100%; }
  .dl-logo{ width:56px; height:56px; }
  .dl-moon{ display:none; }

  .site-foot{ margin-top:84px; padding-top:44px; }
  .foot-grid{ grid-template-columns:1fr 1fr; gap:28px; }
  .foot-brand{ grid-column:1 / -1; }
  .foot-tip{ grid-column:1 / -1; }
  .foot-bottom{ flex-direction:column; align-items:flex-start; gap:6px; }

  .mobile-bar{ display:flex; }
  .to-top{ bottom:96px; right:16px; }
}

@media (max-width:420px){
  .head-inner{ padding:8px 10px 8px 12px; gap:10px; }
  .brand img{ width:36px; height:36px; }
  .brand-t b{ font-size:15px; }
  .brand-t small{ display:none; }
  .head-actions .btn-sm{ padding:9px 14px; font-size:12.5px; }
  .phone-screen{ height:520px; }
  .phone-frame{ border-radius:40px; }
  .mp-screen{ height:372px; }
  .foot-grid{ grid-template-columns:1fr; }
}

/* 降低动效偏好 */
@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{ opacity:1; transform:none; }
}