/* ===================== 基础 ===================== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}

:root{
  --bg:#08080c;
  --surface:#0e0e15;
  --text:#f4f4f8;
  --muted:#9a9ab0;
  --dim:#6a6a80;
  --border:rgba(255,255,255,.09);
  --violet:#7c6cff;
  --coral:#ff4d6d;
  --aqua:#2ee6c5;
  --radius:20px;
  --max:1180px;
  --ease:cubic-bezier(.22,.75,.28,1);
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}

html{scroll-behavior:smooth;background:var(--bg);overflow-x:hidden}

body{
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  -webkit-text-size-adjust:100%;
  overflow-x:hidden;
  width:100%;
}

img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;background:none;border:none;color:inherit}
ul{list-style:none}

/* ===================== 背景 ===================== */
.bg{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(820px 560px at 50% -12%, rgba(124,108,255,.26), transparent 70%),
    radial-gradient(620px 460px at 92% 6%, rgba(255,77,109,.12), transparent 70%),
    radial-gradient(700px 520px at 4% 32%, rgba(46,230,197,.07), transparent 72%);
}
.bg::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size:80px 80px;
  -webkit-mask-image:radial-gradient(ellipse 78% 58% at 50% 0%, #000 0%, transparent 76%);
  mask-image:radial-gradient(ellipse 78% 58% at 50% 0%, #000 0%, transparent 76%);
}
.bg::after{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(180deg, rgba(255,255,255,.02) 0 1px, transparent 1px 4px);
  opacity:.55;
}

/* ===================== 布局 ===================== */
.wrap{
  width:100%;max-width:var(--max);
  margin:0 auto;padding:0 24px;
  position:relative;z-index:1;
}
section{position:relative;z-index:1}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:12px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s,border-color .25s;
}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:10px}

.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,#8b7bff,#7c6cff 42%,#b13bff);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.22),0 10px 28px -10px rgba(124,108,255,.95);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.3),0 16px 40px -12px rgba(124,108,255,1);
}
.btn-ghost{
  color:var(--text);background:rgba(255,255,255,.05);
  border-color:var(--border);backdrop-filter:blur(8px);
}
.btn-ghost:hover{
  background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.2);
  transform:translateY(-2px);
}

/* ===================== 导航 ===================== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  border-bottom:1px solid transparent;
  transition:background .35s,backdrop-filter .35s,border-color .35s;
  padding-left:env(safe-area-inset-left);
  padding-right:env(safe-area-inset-right);
}
.nav.scrolled{
  background:rgba(8,8,12,.82);
  backdrop-filter:blur(20px) saturate(160%);
  -webkit-backdrop-filter:blur(20px) saturate(160%);
  border-bottom-color:var(--border);
}
.nav-inner{height:70px;display:flex;align-items:center;justify-content:space-between;gap:24px}

/* ===================== Logo(图片) ===================== */
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
}
.logo-img{
  height:38px;
  width:auto;
  flex:none;
  display:block;
}
.logo span{font-weight:600}
.logo small{
  font-family:var(--mono);
  font-size:10px;
  font-weight:500;
  color:var(--dim);
  letter-spacing:.06em;
  margin-left:2px;
  align-self:center;
  white-space:nowrap;
}

.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  padding:8px 13px;font-size:14px;color:var(--muted);
  border-radius:9px;transition:color .2s,background .2s;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.06)}
.nav-actions{display:flex;align-items:center;gap:8px;flex:none}

/* ===================== Hero ===================== */
.hero{padding:160px 0 80px;text-align:center}

.badge{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 16px 7px 11px;border-radius:999px;
  font-size:13px;color:#cfcbf5;
  background:rgba(124,108,255,.12);
  border:1px solid rgba(124,108,255,.28);
  margin-bottom:26px;
  max-width:100%;
  line-height:1.5;
  text-align:left;
}
.badge .rec{
  width:8px;height:8px;border-radius:50%;background:var(--coral);
  animation:rec 1.6s ease-in-out infinite;
  flex:none;
}
@keyframes rec{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(255,77,109,.6)}50%{opacity:.45;box-shadow:0 0 0 6px rgba(255,77,109,0)}}

h1{
  font-size:clamp(2.4rem,6.2vw,4.4rem);
  line-height:1.05;letter-spacing:-.04em;font-weight:800;
  margin-bottom:24px;
}
.grad{
  background:linear-gradient(100deg,#a78bfa 0%,#e05cff 45%,#2ee6c5 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.lead{
  max-width:680px;margin:0 auto 44px;
  font-size:clamp(1rem,1.6vw,1.15rem);
  color:var(--muted);line-height:1.78;
}
.lead b{color:#c9c9dd;font-weight:600}

/* ===================== 虚拟输入窗口 ===================== */
.gen-wrap{
  display:flex;flex-direction:column;align-items:center;
  margin-top:8px;
}

.gen-window{
  width:100%;max-width:720px;position:relative;
  border-radius:20px;
  border:1px solid rgba(255,255,255,.12);
  background:linear-gradient(180deg,rgba(19,19,28,.98),rgba(10,10,16,.98));
  box-shadow:
    0 0 0 1px rgba(255,255,255,.04),
    0 40px 100px -40px rgba(0,0,0,.95),
    0 0 130px -55px rgba(124,108,255,.7);
  padding:15px 18px 13px;
  text-align:left;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.gen-window::before{
  content:"";position:absolute;top:0;left:20px;right:20px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(124,108,255,.75),rgba(46,230,197,.55),transparent);
}
.gen-window:focus-within{
  border-color:rgba(124,108,255,.55);
  box-shadow:
    0 0 0 3px rgba(124,108,255,.13),
    0 40px 100px -40px rgba(0,0,0,.95),
    0 0 140px -50px rgba(124,108,255,.9);
}

.gw-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-bottom:4px;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.05em;
}
.gw-tag{
  display:inline-flex;align-items:center;gap:6px;
  color:#b7adff;
}
.gw-tag i{
  width:6px;height:6px;border-radius:50%;background:var(--coral);
  animation:rec 1.6s ease-in-out infinite;
}
.gw-tc{color:#5d5d76;font-variant-numeric:tabular-nums;white-space:nowrap}

.gw-field{position:relative;padding:8px 2px 4px}
.gw-field textarea{
  display:block;position:relative;z-index:1;
  width:100%;min-height:92px;max-height:220px;
  padding:0;resize:none;
  background:none;border:none;outline:none;
  color:#eeeef8;font-size:15px;line-height:1.72;font-family:inherit;
  -webkit-appearance:none;
}
.fake-ph{
  position:absolute;top:8px;left:2px;right:2px;
  z-index:0;pointer-events:none;user-select:none;
  color:#5f5f7a;font-size:15px;line-height:1.72;
  transition:opacity .22s;
}
.fake-ph.hide{opacity:0}
.ph-caret{
  display:inline-block;width:2px;height:.95em;vertical-align:-2px;
  margin-left:2px;background:var(--aqua);
  animation:blink 1s steps(1) infinite;
}
@keyframes blink{50%{opacity:0}}

.gw-bar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:9px;margin-top:6px;
  border-top:1px solid rgba(255,255,255,.07);
}
.gw-tools{display:flex;align-items:center;gap:2px}
.gw-tool{
  width:32px;height:32px;border-radius:9px;
  display:grid;place-items:center;
  color:#8a8aa4;
  transition:color .2s,background .2s;
}
.gw-tool:hover{color:#e3e3f0;background:rgba(255,255,255,.07)}
.gw-tool svg{width:16px;height:16px}

.gw-right{display:flex;align-items:center;gap:12px}
.gw-count{
  font-family:var(--mono);font-size:10.5px;color:#5d5d76;
  font-variant-numeric:tabular-nums;
}
.gw-count b{color:#a5a5bb;font-weight:600}

.gw-send{
  width:38px;height:38px;border-radius:12px;flex:none;
  display:grid;place-items:center;
  color:#fff;
  background:linear-gradient(135deg,#8b7bff,#7c6cff 45%,#b13bff);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.25),0 8px 22px -8px rgba(124,108,255,.95);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),opacity .22s;
}
.gw-send:hover{
  transform:translateY(-1px) scale(1.04);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.3),0 12px 28px -10px rgba(124,108,255,1);
}
.gw-send:disabled{opacity:.6;cursor:default;transform:none}
.gw-send svg{width:17px;height:17px}

.spinner{
  width:15px;height:15px;border-radius:50%;
  border:2px solid rgba(255,255,255,.35);
  border-top-color:#fff;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

.gw-chips{
  display:flex;align-items:center;justify-content:center;
  gap:7px;flex-wrap:wrap;
  margin-top:20px;
  max-width:720px;
}
.gw-chips .label{
  font-family:var(--mono);font-size:10.5px;color:#5d5d76;
  letter-spacing:.05em;margin-right:2px;
}
.chip{
  padding:6px 12px;border-radius:999px;
  font-size:12.5px;color:var(--muted);
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
  transition:color .22s,border-color .22s,background .22s,transform .22s var(--ease);
}
.chip:hover{
  color:#e9e4ff;
  background:rgba(124,108,255,.14);
  border-color:rgba(124,108,255,.42);
  transform:translateY(-1px);
}

.gw-hint{
  margin-top:20px;
  font-size:13px;color:var(--dim);
  display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;
  line-height:1.6;
  padding:0 4px;
}
.gw-hint .sep{color:#3a3a4c}
.gw-hint kbd{
  font-family:var(--mono);font-size:10.5px;
  padding:2px 6px;border-radius:5px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  color:#b9b9d0;
  display:inline-block;
  vertical-align:1px;
}

/* ===================== 统计 ===================== */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  padding:44px 0;margin-top:56px;
  border-top:1px solid var(--border);border-bottom:1px solid var(--border);
}
.stat{text-align:center}
.stat b{
  display:block;font-size:clamp(1.55rem,3.1vw,2.2rem);font-weight:800;
  letter-spacing:-.03em;font-variant-numeric:tabular-nums;
  background:linear-gradient(180deg,#fff,#a5a5c8);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat span{font-size:13.5px;color:var(--muted)}

/* ===================== Section 通用 ===================== */
.sec{padding:108px 0}
.sec-head{max-width:660px;margin:0 auto 56px;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:12px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;
  color:#8b7bff;margin-bottom:18px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:rgba(124,108,255,.6)}
.eyebrow::after{content:"";width:22px;height:1px;background:rgba(124,108,255,.6)}
.sec-head h2{
  font-size:clamp(1.85rem,3.7vw,2.8rem);
  line-height:1.16;letter-spacing:-.035em;font-weight:800;
  margin-bottom:16px;
}
.sec-head p{color:var(--muted);font-size:16.5px;line-height:1.75}

/* ===================== 简介 ===================== */
.intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.intro-copy h2{
  font-size:clamp(1.8rem,3.4vw,2.6rem);
  line-height:1.2;letter-spacing:-.03em;font-weight:800;
  margin-bottom:22px;
}
.intro-copy p{color:var(--muted);font-size:16.5px;line-height:1.82;margin-bottom:18px}
.intro-copy p strong{color:#dcdcf0;font-weight:600}

.intro-points{display:flex;flex-direction:column;gap:14px;margin-top:28px}
.intro-points li{display:flex;align-items:flex-start;gap:12px;font-size:15px;color:#c6c6d8}
.intro-points svg{flex:none;width:20px;height:20px;margin-top:2px;color:var(--aqua)}

.reel-stack{position:relative;display:flex;justify-content:center;gap:14px}
.reel{
  width:31%;aspect-ratio:9/16;border-radius:16px;
  border:1px solid rgba(255,255,255,.14);
  background:linear-gradient(170deg,#1a1730,#0c0c14);
  position:relative;overflow:hidden;
  box-shadow:0 24px 60px -26px rgba(0,0,0,.95);
  transition:transform .4s var(--ease);
}
.reel:nth-child(2){transform:translateY(-22px)}
.reel:hover{transform:translateY(-30px)}
.reel::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 50% 35%,rgba(124,108,255,.5),transparent 62%);
}
.reel:nth-child(2)::before{background:radial-gradient(circle at 50% 35%,rgba(255,77,109,.42),transparent 62%)}
.reel:nth-child(3)::before{background:radial-gradient(circle at 50% 35%,rgba(46,230,197,.38),transparent 62%)}
.reel-label{
  position:absolute;left:10px;bottom:10px;right:10px;
  font-family:var(--mono);font-size:10px;color:#cfcfe4;
  background:rgba(0,0,0,.55);border-radius:6px;padding:4px 7px;
  border:1px solid rgba(255,255,255,.1);
}

/* ===================== 功能特征 ===================== */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{
  position:relative;padding:30px 26px;border-radius:var(--radius);
  border:1px solid var(--border);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  overflow:hidden;
  transition:transform .4s var(--ease),border-color .4s,box-shadow .4s;
}
.card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;
  background:radial-gradient(320px circle at var(--mx,50%) var(--my,50%),rgba(124,108,255,.2),transparent 62%);
  opacity:0;transition:opacity .35s;pointer-events:none;
}
.card:hover::before{opacity:1}
.card:hover{
  transform:translateY(-5px);
  border-color:rgba(124,108,255,.42);
  box-shadow:0 24px 56px -26px rgba(124,108,255,.75);
}
.card > *{position:relative;z-index:1}

.card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.card-icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  color:#c3b8ff;
  background:linear-gradient(150deg,rgba(124,108,255,.28),rgba(224,92,255,.13));
  border:1px solid rgba(124,108,255,.3);
  flex:none;
}
.card-icon svg{width:21px;height:21px}
.card-tag{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;
  color:var(--dim);padding:3px 8px;border-radius:5px;
  border:1px solid var(--border);
}
.card h3{font-size:17px;font-weight:700;letter-spacing:-.01em;margin-bottom:9px}
.card p{font-size:14.5px;color:var(--muted);line-height:1.72}

/* ===================== 为什么选择 ===================== */
.why{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.why-item{
  display:flex;gap:20px;
  padding:30px 28px;border-radius:var(--radius);
  border:1px solid var(--border);
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.012));
  transition:border-color .35s,transform .35s var(--ease);
}
.why-item:hover{transform:translateY(-4px);border-color:rgba(124,108,255,.4)}
.why-num{
  font-family:var(--mono);font-size:12px;font-weight:700;
  color:#8b7bff;flex:none;padding-top:4px;letter-spacing:.06em;
}
.why-body h3{font-size:17px;font-weight:700;margin-bottom:10px}
.why-body p{font-size:14.5px;color:var(--muted);line-height:1.72;margin-bottom:16px}
.why-metric{display:inline-flex;align-items:baseline;gap:7px;font-family:var(--mono)}
.why-metric b{
  font-size:22px;font-weight:700;
  background:linear-gradient(120deg,#a78bfa,#2ee6c5);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.why-metric span{font-size:12px;color:var(--dim)}

/* ===================== 应用场景 ===================== */
.scenes{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  grid-auto-rows:minmax(170px,auto);
  gap:16px;
}
.scene{
  position:relative;overflow:hidden;
  padding:26px;border-radius:var(--radius);
  border:1px solid var(--border);
  background:linear-gradient(170deg,rgba(255,255,255,.055),rgba(255,255,255,.012));
  display:flex;flex-direction:column;justify-content:flex-end;
  transition:transform .4s var(--ease),border-color .4s;
}
.scene:hover{transform:translateY(-5px);border-color:rgba(255,255,255,.22)}
.scene::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(360px circle at 20% 10%,var(--glow,rgba(124,108,255,.24)),transparent 66%);
  opacity:.9;
}
.scene > *{position:relative;z-index:1}
.scene.lg{grid-column:span 2;grid-row:span 2}
.scene.md{grid-column:span 2}

.scene-ico{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;margin-bottom:auto;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.12);
  color:#dcdcf0;
  flex:none;
}
.scene-ico svg{width:18px;height:18px}
.scene h3{font-size:17px;font-weight:700;margin-top:20px;margin-bottom:8px}
.scene p{font-size:14px;color:var(--muted);line-height:1.7}
.scene.lg h3{font-size:21px}
.scene.lg p{font-size:15px;max-width:440px}

.scene-meta{margin-top:16px;display:flex;gap:8px;flex-wrap:wrap}
.scene-meta span{
  font-family:var(--mono);font-size:11px;color:#b7b7cf;
  padding:3px 9px;border-radius:6px;
  background:rgba(0,0,0,.35);
  border:1px solid rgba(255,255,255,.1);
}

/* ===================== 如何用 ===================== */
.how{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.how::before{
  content:"";position:absolute;top:34px;left:8%;right:8%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(124,108,255,.5) 12%,rgba(46,230,197,.45) 88%,transparent);
  z-index:0;
}
.step{position:relative;z-index:1}
.step-tc{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:11.5px;color:#b9b9d0;
  padding:6px 12px;border-radius:999px;
  background:rgba(12,12,20,.9);
  border:1px solid rgba(124,108,255,.35);
  margin-bottom:22px;
  backdrop-filter:blur(6px);
}
.step-tc i{width:6px;height:6px;border-radius:50%;background:var(--aqua);flex:none}
.step-card{
  padding:28px 24px;border-radius:var(--radius);
  border:1px solid var(--border);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.012));
  transition:border-color .35s,transform .35s var(--ease);
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(124,108,255,.4)}
.step-card h3{font-size:17px;font-weight:700;margin-bottom:10px}
.step-card p{font-size:14.5px;color:var(--muted);line-height:1.72}

/* ===================== FAQ ===================== */
.faq{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq details{
  border-radius:16px;
  border:1px solid var(--border);
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.012));
  overflow:hidden;
  transition:border-color .3s,background .3s;
}
.faq details[open]{
  border-color:rgba(124,108,255,.4);
  background:linear-gradient(180deg,rgba(124,108,255,.09),rgba(255,255,255,.015));
}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;cursor:pointer;list-style:none;
  font-size:15.5px;font-weight:600;color:#eaeaf4;
  transition:color .2s;
  -webkit-tap-highlight-color:transparent;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:#fff}
.faq .q-idx{font-family:var(--mono);font-size:11.5px;color:#7a7a92;flex:none;margin-right:10px}
.faq .q-text{flex:1;display:flex;align-items:baseline;min-width:0}
.faq .chev{
  flex:none;width:24px;height:24px;border-radius:7px;
  display:grid;place-items:center;
  border:1px solid var(--border);color:var(--muted);
  transition:transform .3s var(--ease),color .3s,border-color .3s;
}
.faq details[open] .chev{
  transform:rotate(180deg);
  color:#c3b8ff;border-color:rgba(124,108,255,.5);
}
.faq .a{
  padding:0 24px 22px 24px;font-size:14.5px;color:var(--muted);
  line-height:1.8;max-width:94%;
}

/* ===================== 产品新闻 ===================== */
.news{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.news-card{
  display:flex;flex-direction:column;
  border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--border);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.012));
  transition:transform .4s var(--ease),border-color .4s,box-shadow .4s;
}
.news-card:hover{
  transform:translateY(-5px);
  border-color:rgba(124,108,255,.42);
  box-shadow:0 26px 60px -30px rgba(124,108,255,.7);
}
.news-thumb{
  aspect-ratio:16/9;position:relative;overflow:hidden;
  background:linear-gradient(150deg,#1a1730,#0b0b12);
  border-bottom:1px solid var(--border);
  display:grid;place-items:center;
}
.news-thumb::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 50% 50%,var(--ng,rgba(124,108,255,.5)),transparent 66%);
}
.news-thumb .play-mini{
  position:relative;z-index:1;
  width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.35);
  color:#fff;backdrop-filter:blur(8px);
}
.news-thumb .play-mini svg{width:15px;height:15px;margin-left:2px}
.news-thumb .dur{
  position:absolute;right:10px;bottom:10px;z-index:1;
  font-family:var(--mono);font-size:11px;color:#e3e3f0;
  background:rgba(0,0,0,.65);padding:2px 7px;border-radius:5px;
  border:1px solid rgba(255,255,255,.12);
}
.news-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;gap:12px}
.news-meta{
  display:flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:11.5px;color:var(--dim);
  flex-wrap:wrap;
}
.news-meta .cat{
  color:#c3b8ff;padding:2px 8px;border-radius:5px;
  background:rgba(124,108,255,.14);
  border:1px solid rgba(124,108,255,.28);
}
.news-card h3{font-size:16.5px;font-weight:700;line-height:1.45;letter-spacing:-.01em}
.news-card p{font-size:14px;color:var(--muted);line-height:1.7;flex:1}

/* ===================== CTA ===================== */
.cta-box{
  position:relative;padding:74px 40px;border-radius:28px;
  text-align:center;overflow:hidden;
  border:1px solid rgba(124,108,255,.32);
  background:
    radial-gradient(620px 320px at 50% 0%, rgba(124,108,255,.36), transparent 72%),
    linear-gradient(180deg,rgba(124,108,255,.1),rgba(255,255,255,.015));
}
.cta-box::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(180deg,rgba(255,255,255,.02) 0 1px,transparent 1px 4px);
}
.cta-box > *{position:relative;z-index:1}
.cta-box h2{
  font-size:clamp(1.8rem,3.6vw,2.7rem);
  font-weight:800;letter-spacing:-.035em;line-height:1.18;
  margin-bottom:16px;
}
.cta-box p{color:var(--muted);max-width:560px;margin:0 auto 34px;font-size:16px}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}

/* ===================== 页脚(简化版) ===================== */
footer{
  border-top:1px solid var(--border);
  padding:52px 0 34px;margin-top:104px;
  position:relative;z-index:1;
  padding-bottom:calc(34px + env(safe-area-inset-bottom));
}
.footer-main{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  margin-bottom:30px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:14px;
  min-width:0;
}
.footer-brand .logo{
  flex:none;
}
.footer-brand p{
  font-size:13.5px;
  color:var(--dim);
  line-height:1.6;
  max-width:420px;
}
.footer-links{
  display:flex;
  align-items:center;
  gap:4px;
  flex-wrap:wrap;
}
.footer-links a{
  font-size:13.5px;
  color:var(--muted);
  padding:6px 12px;
  border-radius:8px;
  transition:color .2s,background .2s;
}
.footer-links a:hover{
  color:var(--text);
  background:rgba(255,255,255,.06);
}

.footer-bottom{
  padding-top:22px;
  border-top:1px solid var(--border);
  font-size:13px;
  color:#5d5d72;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom span{line-height:1.6}
.footer-bottom .link{
  color:var(--dim);
  transition:color .2s;
}
.footer-bottom .link:hover{color:#b7adff}

/* ===================== 进场动画 ===================== */
.reveal{
  opacity:0;transform:translateY(26px);
  transition:opacity .8s var(--ease),transform .8s var(--ease);
}
.reveal.in{opacity:1;transform:none}

/* ============================================================
   响应式 — 平板
   ============================================================ */
@media (max-width:1024px){
  .features{grid-template-columns:1fr 1fr}
  .scenes{grid-template-columns:repeat(2,1fr)}
  .scene.lg{grid-column:span 2;grid-row:span 1}
  .scene.md{grid-column:span 1}
  .news{grid-template-columns:1fr 1fr}
  .intro-grid{grid-template-columns:1fr;gap:44px}
  .reel-stack{max-width:520px;margin:0 auto}
}

/* ============================================================
   响应式 — 导航折叠 / 通用收紧
   ============================================================ */
@media (max-width:900px){
  .nav-inner{height:60px;gap:12px}
  .nav-links{display:none}

  .logo{gap:8px;min-width:0}
  .logo-img{height:34px}
  .logo small{font-size:9.5px}

  .nav-actions .btn-sm{
    padding:10px 18px;
    font-size:14px;
    min-height:40px;
  }

  .how{grid-template-columns:1fr;gap:18px}
  .how::before{display:none}
  .step-tc{margin-bottom:14px}
  .why{grid-template-columns:1fr}
}

/* ============================================================
   响应式 — 手机
   ============================================================ */
@media (max-width:680px){
  .wrap{padding:0 18px}

  /* ---------- Hero ---------- */
  .hero{padding:104px 0 52px}
  .badge{
    font-size:12px;
    padding:6px 13px 6px 10px;
    margin-bottom:20px;
    gap:7px;
  }
  .badge .rec{width:7px;height:7px}
  h1{
    font-size:clamp(1.9rem,8.5vw,2.6rem);
    line-height:1.12;
    margin-bottom:18px;
    letter-spacing:-.035em;
  }
  .lead{
    font-size:15px;
    line-height:1.72;
    margin-bottom:30px;
    padding:0 2px;
  }

  /* ---------- 输入窗口 ---------- */
  .gen-window{padding:13px 14px 11px;border-radius:16px}
  .gen-window::before{left:14px;right:14px}

  .gw-head{font-size:10px;margin-bottom:2px}
  .gw-tag{gap:5px}
  .gw-tc{font-size:10px}

  .gw-field{padding:6px 0 2px}
  .gw-field textarea,
  .fake-ph{
    font-size:16px;
    line-height:1.6;
  }
  .gw-field textarea{min-height:86px}

  .gw-bar{
    padding-top:10px;
    margin-top:4px;
    gap:8px;
  }
  .gw-tool{width:36px;height:36px;border-radius:10px}
  .gw-tool svg{width:17px;height:17px}
  .gw-send{width:40px;height:40px;border-radius:12px}
  .gw-count{display:none}
  .gw-right{gap:0}

  .gw-chips{
    margin-top:16px;
    gap:6px;
    padding:0 2px;
  }
  .gw-chips .label{display:none}
  .chip{
    padding:8px 14px;
    font-size:12.5px;
    min-height:34px;
    display:inline-flex;
    align-items:center;
  }

  .gw-hint{
    font-size:12px;
    line-height:1.65;
    margin-top:16px;
    gap:6px;
    color:#5f5f78;
  }
  .gw-hint .kbd-hint,
  .gw-hint .sep-2{display:none}
  .gw-hint kbd{font-size:10px}

  /* ---------- 统计 ---------- */
  .stats{
    grid-template-columns:1fr 1fr;
    gap:24px 10px;
    padding:30px 0;
    margin-top:38px;
  }
  .stat b{font-size:1.5rem;letter-spacing:-.02em}
  .stat span{font-size:12.5px;line-height:1.5;display:block;margin-top:2px}

  /* ---------- Section 通用 ---------- */
  .sec{padding:64px 0}
  .sec-head{margin-bottom:34px;padding:0 2px}
  .sec-head h2{font-size:1.6rem;line-height:1.25;margin-bottom:12px}
  .sec-head p{font-size:14.5px;line-height:1.7}
  .eyebrow{font-size:11px;letter-spacing:.14em;margin-bottom:14px}
  .eyebrow::before,.eyebrow::after{width:16px}

  /* ---------- 简介 ---------- */
  .intro-copy h2{font-size:1.55rem;line-height:1.25;margin-bottom:16px}
  .intro-copy p{font-size:14.5px;line-height:1.75;margin-bottom:14px}
  .intro-points{gap:12px;margin-top:22px}
  .intro-points li{font-size:13.5px;line-height:1.6;gap:10px}
  .intro-points svg{width:18px;height:18px}
  .intro-grid{gap:34px}

  .reel-stack{gap:10px;max-width:none}
  .reel{border-radius:12px}
  .reel:nth-child(2){transform:translateY(-14px)}
  .reel:hover{transform:translateY(-18px)}
  .reel:nth-child(2):hover{transform:translateY(-20px)}
  .reel-label{font-size:9px;left:6px;right:6px;bottom:6px;padding:3px 5px}

  /* ---------- 功能卡片 ---------- */
  .features{grid-template-columns:1fr;gap:12px}
  .card{padding:22px 20px;border-radius:16px}
  .card-top{margin-bottom:16px}
  .card-icon{width:40px;height:40px;border-radius:11px}
  .card-icon svg{width:19px;height:19px}
  .card h3{font-size:16px;margin-bottom:8px}
  .card p{font-size:14px;line-height:1.7}

  /* ---------- 为什么选择 ---------- */
  .why{gap:12px}
  .why-item{padding:22px 20px;gap:14px;border-radius:16px}
  .why-num{font-size:11px;padding-top:3px}
  .why-body h3{font-size:16px;line-height:1.4;margin-bottom:8px}
  .why-body p{font-size:14px;line-height:1.7;margin-bottom:12px}
  .why-metric b{font-size:19px}
  .why-metric span{font-size:11.5px}

  /* ---------- 场景 ---------- */
  .scenes{grid-template-columns:1fr;gap:12px;grid-auto-rows:auto}
  .scene{padding:22px 20px;border-radius:16px}
  .scene.lg{grid-column:span 1;grid-row:auto}
  .scene.md{grid-column:span 1}
  .scene-ico{width:36px;height:36px;border-radius:10px}
  .scene-ico svg{width:17px;height:17px}
  .scene h3{font-size:16px;margin-top:16px;margin-bottom:6px}
  .scene.lg h3{font-size:17px}
  .scene p,.scene.lg p{font-size:13.5px;line-height:1.65;max-width:none}
  .scene-meta{margin-top:12px;gap:6px}
  .scene-meta span{font-size:10.5px;padding:3px 8px}

  /* ---------- 如何用 ---------- */
  .step-card{padding:20px 18px;border-radius:16px}
  .step-tc{font-size:11px;padding:5px 11px;margin-bottom:12px}
  .step-card h3{font-size:16px;margin-bottom:8px}
  .step-card p{font-size:14px;line-height:1.7}
  .how{gap:14px}

  /* ---------- FAQ ---------- */
  .faq{gap:10px}
  .faq details{border-radius:14px}
  .faq summary{
    padding:16px 16px;
    font-size:14.5px;
    gap:12px;
    line-height:1.5;
  }
  .faq .q-idx{font-size:11px;margin-right:6px}
  .faq .chev{width:22px;height:22px;border-radius:6px}
  .faq .a{
    padding:0 16px 18px;
    font-size:13.5px;
    line-height:1.75;
    max-width:100%;
  }

  /* ---------- 新闻 ---------- */
  .news{grid-template-columns:1fr;gap:12px}
  .news-card{border-radius:16px}
  .news-body{padding:18px 18px 20px;gap:10px}
  .news-meta{font-size:11px;gap:8px}
  .news-card h3{font-size:15.5px;line-height:1.45}
  .news-card p{font-size:13.5px;line-height:1.65}
  .news-thumb .play-mini{width:40px;height:40px}

  /* ---------- CTA ---------- */
  .cta-box{padding:44px 20px;border-radius:22px}
  .cta-box h2{font-size:1.55rem;line-height:1.25;margin-bottom:12px}
  .cta-box p{font-size:14px;line-height:1.7;margin-bottom:24px}
  .cta-actions{flex-direction:column;gap:10px}
  .cta-actions .btn{width:100%}

  /* ---------- 页脚 ---------- */
  footer{
    padding:38px 0 26px;
    margin-top:64px;
    padding-bottom:calc(26px + env(safe-area-inset-bottom));
  }
  .footer-main{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:24px}
  .footer-brand{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-brand .logo-img{height:32px}
  .footer-brand p{font-size:13px;max-width:none;line-height:1.6}
  .footer-links{gap:0 2px;margin:0 -10px}
  .footer-links a{padding:6px 10px;font-size:13px;min-height:34px;display:inline-flex;align-items:center}
  .footer-bottom{
    flex-direction:column;
    align-items:flex-start;
    gap:8px;
    padding-top:18px;
    font-size:12.5px;
  }
}

/* ============================================================
   响应式 — 小屏手机
   ============================================================ */
@media (max-width:380px){
  .wrap{padding:0 14px}
  .logo small{display:none}
  .logo-img{height:30px}
  h1{font-size:1.75rem}
  .badge{font-size:11px;padding:5px 11px 5px 8px}
  .stats{grid-template-columns:1fr 1fr;gap:20px 8px}
  .stat b{font-size:1.35rem}
  .stat span{font-size:11.5px}
  .gw-tool{width:34px;height:34px}
  .chip{padding:7px 12px;font-size:12px}
  .sec-head h2{font-size:1.45rem}
  .cta-box h2{font-size:1.4rem}
  .faq summary{padding:14px 14px;font-size:14px}
  .faq .a{padding:0 14px 16px;font-size:13px}
}

/* ===================== 减少动效 ===================== */
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}