/* PAGE 23 — Premium new-user pure download page
   Direction: cobalt/navy editorial, diagonal device stage, download-only conversion
*/
:root{
  --ink:#102033;
  --navy:#0d1b2a;
  --navy2:#142c45;
  --cobalt:#3467d9;
  --cyan:#89b7ff;
  --green:#00ad78;
  --paper:#f3f5f8;
  --white:#fff;
  --line:#d8e0e8;
  --muted:#687789;
  --shell:min(1180px,calc(100% - 40px));
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  background:#fff;
  font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;
  line-height:1.72;
  -webkit-font-smoothing:antialiased
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit}
.shell{width:var(--shell);margin:auto}
section{scroll-margin-top:86px}

/* header */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.95);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(18px)
}
.nav-row{
  height:72px;
  display:flex;
  align-items:center;
  gap:26px
}
.brand img{width:145px}
.desktop-nav{
  margin-left:auto;
  display:flex;
  gap:22px
}
.desktop-nav a{
  color:#546477;
  font-size:13px;
  font-weight:700
}
.desktop-nav a:hover{color:var(--cobalt)}
.nav-cta{
  padding:10px 17px;
  background:var(--navy);
  color:#fff;
  font-size:12px;
  font-weight:900
}
.menu-toggle{
  display:none;
  margin-left:auto;
  border:0;
  background:transparent;
  padding:8px
}
.menu-toggle span{
  display:block;
  width:22px;height:2px;
  margin:5px;
  background:var(--navy)
}
.mobile-nav{
  padding:8px 20px 18px;
  background:#fff;
  border-top:1px solid var(--line)
}
.mobile-nav a{
  display:block;
  padding:9px 0;
  font-size:13px;
  font-weight:700
}

/* hero */
.hero{
  position:relative;
  overflow:hidden;
  padding:82px 0 96px;
  background:
    radial-gradient(circle at 78% 35%,rgba(52,103,217,.11),transparent 28%),
    linear-gradient(180deg,#f8faff,#eef2f8)
}
.hero-grid-lines{
  position:absolute;
  inset:0;
  background:
    linear-gradient(90deg,rgba(16,32,51,.035) 1px,transparent 1px),
    linear-gradient(rgba(16,32,51,.028) 1px,transparent 1px);
  background-size:90px 90px;
  pointer-events:none
}
.hero-layout{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:.92fr 1.08fr;
  gap:72px;
  align-items:center
}
.hero-kicker{
  display:flex;
  align-items:center;
  gap:16px;
  margin-bottom:18px
}
.hero-kicker span{
  color:var(--cobalt);
  font-size:9px;
  letter-spacing:.18em;
  font-weight:900
}
.hero-kicker b{
  color:#98a6b4;
  font-size:10px
}
.hero h1{
  margin:0;
  font-family:Georgia,"Times New Roman","Microsoft YaHei",serif;
  font-size:clamp(62px,7vw,98px);
  line-height:.94;
  font-weight:500;
  letter-spacing:-.06em
}
.hero h1 span{color:#687b91}
.hero-lead{
  max-width:640px;
  margin:28px 0 0;
  color:#5a6b7d;
  font-size:16px;
  line-height:1.95
}
.hero-download{
  width:min(100%,370px);
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:30px;
  padding:16px 18px;
  background:var(--navy);
  color:#fff
}
.hero-download small{
  display:block;
  color:#9eb2c9;
  font-size:8px;
  letter-spacing:.15em
}
.hero-download b{
  display:block;
  margin-top:3px;
  font-size:14px
}
.hero-download i{
  font-style:normal;
  font-size:18px
}
.hero-device-line{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  margin-top:40px;
  border-top:1px solid #ccd6e0
}
.hero-device-line a{
  padding:13px 8px 0 0
}
.hero-device-line small{
  display:block;
  color:var(--cobalt);
  font-size:8px;
  font-weight:900
}
.hero-device-line b{
  display:block;
  margin-top:2px;
  font-size:11px
}
.hero-device-line span{
  display:block;
  color:#8794a1;
  font-size:9px
}

/* stage */
.hero-stage{
  position:relative;
  min-height:600px
}
.stage-panel{
  position:absolute;
  inset:45px 40px 60px 75px;
  overflow:hidden;
  background:var(--navy);
  transform:rotate(-2deg);
  box-shadow:0 34px 75px rgba(25,48,78,.18)
}
.stage-panel-top{
  height:44px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:0 14px;
  background:#101e30;
  color:#8ca0b6;
  font-size:8px;
  letter-spacing:.13em
}
.stage-panel>img{
  width:100%;
  height:calc(100% - 44px);
  object-fit:cover
}
.stage-phone{
  position:absolute;
  right:0;
  bottom:0;
  width:155px;
  height:330px;
  overflow:hidden;
  border:7px solid #fff;
  border-radius:30px;
  background:#111;
  box-shadow:0 24px 55px rgba(20,40,65,.18)
}
.stage-phone img{width:100%;height:100%;object-fit:cover}
.stage-app{
  position:absolute;
  left:25px;
  bottom:25px;
  display:flex;
  align-items:center;
  gap:10px;
  padding:11px 14px;
  background:#fff;
  box-shadow:0 18px 45px rgba(20,40,65,.12)
}
.stage-app img{width:34px}
.stage-app span{
  display:block;
  color:var(--cobalt);
  font-size:8px;
  letter-spacing:.14em
}
.stage-app b{display:block;font-size:11px}

/* strip */
.start-strip{
  background:var(--navy);
  color:#fff
}
.start-strip-grid{
  min-height:104px;
  display:grid;
  grid-template-columns:1fr 1.1fr .5fr;
  gap:30px;
  align-items:center
}
.start-strip-grid>div span{
  color:var(--cyan);
  font-size:8px;
  letter-spacing:.16em
}
.start-strip-grid>div b{
  display:block;
  margin-top:3px;
  font-size:14px
}
.start-strip-grid p{
  color:#9fb0c3;
  font-size:12px
}
.start-strip-grid>a{
  justify-self:end;
  padding:12px 17px;
  background:#fff;
  color:var(--navy);
  font-size:12px;
  font-weight:900
}

/* common headings */
.eyebrow{
  margin:0 0 12px;
  color:var(--cobalt);
  font-size:9px;
  letter-spacing:.18em;
  font-weight:900
}
.eyebrow.light{color:var(--cyan)}
.section-copy h2,.tablet-copy h2,.section-head h2,.again-copy h2,.faq-intro h2,.final-copy h2{
  margin:0;
  font-family:Georgia,"Times New Roman","Microsoft YaHei",serif;
  font-size:clamp(40px,5vw,58px);
  line-height:1.08;
  font-weight:500;
  letter-spacing:-.045em
}
.section-head{
  display:grid;
  grid-template-columns:1fr .65fr;
  gap:56px;
  align-items:end;
  margin-bottom:40px
}
.section-head>p{margin:0;color:var(--muted)}

/* mobile section */
.mobile-section{
  padding:110px 0;
  background:#fff
}
.section-grid{
  display:grid;
  grid-template-columns:.72fr 1.28fr;
  gap:78px;
  align-items:center
}
.section-copy>p:not(.eyebrow){
  color:var(--muted)
}
.download-pairs{
  display:grid;
  gap:10px;
  margin-top:26px
}
.download-pairs a{
  display:grid;
  grid-template-columns:85px 1fr 20px;
  align-items:center;
  gap:14px;
  padding:14px 16px;
  border:1px solid var(--line);
  background:#f8fafc
}
.download-pairs span{
  color:var(--cobalt);
  font-size:8px;
  letter-spacing:.14em
}
.download-pairs b{font-size:12px}
.download-pairs i{font-style:normal;font-weight:900}
.mobile-art{
  position:relative;
  min-height:510px
}
.mobile-art-main,.mobile-art-side{
  position:absolute;
  margin:0;
  overflow:hidden;
  border:7px solid #fff;
  background:#111;
  box-shadow:0 28px 65px rgba(25,48,78,.14)
}
.mobile-art-main{
  left:18%;
  top:10px;
  width:230px;
  height:470px;
  border-radius:30px
}
.mobile-art-side{
  right:10%;
  top:90px;
  width:170px;
  height:350px;
  border-radius:28px;
  transform:rotate(5deg)
}
.mobile-art img{width:100%;height:100%;object-fit:cover}
.mobile-art-label{
  position:absolute;
  left:5%;
  bottom:12px;
  padding:12px 15px;
  border-left:3px solid var(--cobalt);
  background:#fff
}
.mobile-art-label span{
  display:block;
  color:var(--cobalt);
  font-size:8px;
  letter-spacing:.14em
}
.mobile-art-label b{display:block;margin-top:3px;font-size:11px}

/* tablet */
.tablet-section{
  background:var(--navy2);
  color:#fff
}
.tablet-layout{
  min-height:540px;
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:70px;
  align-items:center
}
.tablet-frame{
  width:92%;
  margin:auto;
  box-shadow:0 30px 70px rgba(0,0,0,.24)
}
.tablet-top{
  height:38px;
  display:flex;
  align-items:center;
  gap:6px;
  padding:0 12px;
  background:#0c1724
}
.tablet-top span{
  width:7px;height:7px;border-radius:50%;background:#5d7188
}
.tablet-top b{
  margin-left:auto;
  color:#8195ab;
  font-size:7px;
  letter-spacing:.14em
}
.tablet-frame>img{
  width:100%;
  height:330px;
  object-fit:cover
}
.tablet-copy>p:not(.eyebrow){color:#a9b7c6}
.tablet-copy>a{
  display:inline-block;
  margin-top:22px;
  padding:13px 17px;
  background:#fff;
  color:var(--navy);
  font-size:12px;
  font-weight:900
}

/* pc */
.pc-section{
  padding:110px 0;
  background:#f4f6f9
}
.pc-download-panel{
  display:grid;
  grid-template-columns:1.3fr .7fr;
  border:1px solid var(--line);
  background:#fff
}
.pc-preview{
  min-height:430px;
  display:grid;
  place-items:center;
  padding:34px;
  background:#eaf0f7
}
.pc-window{
  width:92%;
  box-shadow:0 25px 55px rgba(23,44,70,.13)
}
.pc-window-bar{
  height:36px;
  display:flex;
  align-items:center;
  gap:6px;
  padding:0 11px;
  background:#122033
}
.pc-window-bar span{
  width:7px;height:7px;border-radius:50%;background:#61748b
}
.pc-window-bar b{
  margin-left:auto;
  color:#8496a9;
  font-size:7px;
  letter-spacing:.14em
}
.pc-window img{
  width:100%;
  height:300px;
  object-fit:cover
}
.pc-download-copy{
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding:40px
}
.pc-download-copy>span{
  color:var(--cobalt);
  font-size:8px;
  letter-spacing:.16em;
  font-weight:900
}
.pc-download-copy h3{
  margin:8px 0 10px;
  font-size:28px
}
.pc-download-copy p{
  margin:0;
  color:var(--muted);
  font-size:12px
}
.pc-download-copy>a{
  margin-top:24px;
  display:flex;
  justify-content:space-between;
  padding:14px 16px;
  background:var(--navy);
  color:#fff;
  font-size:12px;
  font-weight:900
}

/* visual gallery */
.visual-section{
  padding:110px 0;
  background:#fff
}
.visual-grid{
  display:grid;
  grid-template-columns:1.25fr .75fr .75fr;
  grid-template-rows:260px 260px;
  gap:12px
}
.visual-grid figure{
  position:relative;
  margin:0;
  overflow:hidden;
  background:#f1f4f8;
  border:1px solid var(--line)
}
.visual-large{grid-row:1/3}
.visual-wide{grid-column:2/4}
.visual-grid img{
  width:100%;height:100%;object-fit:contain;padding:12px
}
.visual-large img,.visual-wide img{
  object-fit:cover;padding:0
}
.visual-grid figcaption{
  position:absolute;
  left:12px;bottom:12px;
  display:flex;
  gap:9px;
  padding:7px 10px;
  background:rgba(13,27,42,.9);
  color:#fff;
  font-size:9px
}
.visual-grid figcaption span{color:var(--cyan)}

/* again */
.again-section{
  padding:110px 0;
  background:var(--navy);
  color:#fff
}
.again-grid{
  display:grid;
  grid-template-columns:.8fr 1.2fr;
  gap:78px;
  align-items:center
}
.again-copy>p:not(.eyebrow){color:#a9b8c7}
.again-links{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:10px
}
.again-links a{
  min-height:92px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:18px;
  background:#132a43;
  border:1px solid #27425d;
  color:#fff;
  font-size:12px;
  font-weight:900
}
.again-links a:hover{background:#fff;color:var(--navy)}

/* faq */
.faq-section{
  padding:110px 0;
  background:#f4f6f9
}
.faq-grid{
  display:grid;
  grid-template-columns:.7fr 1.3fr;
  gap:82px
}
.faq-intro{
  position:sticky;
  top:110px;
  align-self:start
}
.faq-list{border-top:2px solid var(--ink)}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list summary{
  list-style:none;
  position:relative;
  padding:21px 44px 21px 0;
  cursor:pointer;
  font-size:15px;
  font-weight:900
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{
  content:"+";
  position:absolute;
  right:4px;top:17px;
  width:28px;height:28px;
  display:grid;place-items:center;
  background:#e7ebf0;
  color:#33465a;
  font-size:18px;
  font-weight:400
}
.faq-list details[open] summary::after{content:"−"}
.faq-list p{
  margin:0;
  padding:0 55px 22px 0;
  color:var(--muted);
  font-size:12px
}

/* final */
.final-section{
  padding:32px 0 94px;
  background:#f4f6f9
}
.final-panel{
  min-height:215px;
  display:grid;
  grid-template-columns:100px 1fr 200px;
  gap:30px;
  align-items:center;
  padding:38px 42px;
  background:#fff;
  border-top:4px solid var(--cobalt)
}
.final-number{
  font-family:Georgia,serif;
  color:#b6c0cb;
  font-size:54px
}
.final-copy span{
  color:var(--cobalt);
  font-size:8px;
  letter-spacing:.16em
}
.final-copy h2{font-size:34px}
.final-copy p{margin:4px 0 0;color:var(--muted);font-size:11px}
.final-panel>a{
  display:flex;
  justify-content:space-between;
  padding:14px 16px;
  background:var(--navy);
  color:#fff;
  font-size:12px;
  font-weight:900
}

/* footer */
.footer{
  padding:54px 0 74px;
  background:#fff;
  border-top:1px solid var(--line)
}
.footer-grid{
  display:grid;
  grid-template-columns:1.2fr .7fr .7fr;
  gap:50px
}
.footer img{width:135px}
.footer p{
  max-width:390px;
  color:#788696;
  font-size:11px
}
.footer nav{
  display:grid;
  gap:7px
}
.footer nav a{
  color:#59697a;
  font-size:11px
}
.footer-grid>p{
  margin:0;
  text-align:right
}
.mobile-fixed{display:none}

/* responsive */
@media(max-width:1050px){
  .desktop-nav{display:none}
  .menu-toggle{display:block}
  .nav-cta{margin-left:auto}
  .hero-layout,.faq-grid{grid-template-columns:1fr}
  .faq-intro{position:static}
  .hero-stage{min-height:520px}
}
@media(max-width:820px){
  :root{--shell:min(100% - 28px,1180px)}
  .nav-cta{display:none}
  .hero{padding:52px 0 68px}
  .hero h1{font-size:64px}
  .start-strip-grid{
    grid-template-columns:1fr;
    padding:22px 0
  }
  .start-strip-grid>a{justify-self:start}
  .mobile-section,.pc-section,.visual-section,.again-section,.faq-section{padding:78px 0}
  .section-grid,.tablet-layout,.again-grid{grid-template-columns:1fr}
  .mobile-art{min-height:470px}
  .tablet-copy{padding:0 0 58px}
  .pc-download-panel{grid-template-columns:1fr}
  .visual-grid{
    grid-template-columns:1fr 1fr;
    grid-template-rows:auto
  }
  .visual-large{
    grid-column:1/-1;
    grid-row:auto;
    min-height:340px
  }
  .visual-wide{
    grid-column:1/-1;
    min-height:250px
  }
  .again-links{grid-template-columns:1fr}
  .final-panel{grid-template-columns:90px 1fr}
  .final-panel>a{grid-column:1/-1}
  .footer-grid{grid-template-columns:1fr}
  .footer-grid>p{text-align:left}
}
@media(max-width:580px){
  body{padding-bottom:72px}
  .nav-row{height:66px}
  .brand img{width:126px}
  .hero h1{font-size:50px}
  .hero-lead{font-size:14px}
  .hero-device-line{grid-template-columns:1fr 1fr}
  .hero-device-line a{
    padding:10px 0;
    border-bottom:1px solid #ccd6e0
  }
  .hero-stage{min-height:390px}
  .stage-panel{inset:25px 30px 60px 35px}
  .stage-phone{
    width:95px;height:200px;border-width:5px
  }
  .stage-app{left:7px;bottom:18px}
  .section-copy h2,.tablet-copy h2,.section-head h2,.again-copy h2,.faq-intro h2{
    font-size:37px
  }
  .phone-one,.mobile-art-main{
    left:8%;
    width:155px;height:330px
  }
  .mobile-art-side{
    right:5%;
    width:115px;height:250px
  }
  .tablet-frame>img{height:220px}
  .pc-preview{min-height:320px;padding:20px}
  .pc-window img{height:210px}
  .visual-grid{grid-template-columns:1fr}
  .visual-large,.visual-wide{
    grid-column:auto;
    min-height:280px
  }
  .visual-grid figure{min-height:260px}
  .final-panel{
    grid-template-columns:1fr;
    padding:28px 22px
  }
  .final-panel>a{grid-column:auto}
  .mobile-fixed{
    position:fixed;
    left:9px;right:9px;bottom:9px;
    z-index:100;
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:9px 9px 9px 12px;
    background:rgba(13,27,42,.97);
    box-shadow:0 15px 38px rgba(0,0,0,.22)
  }
  .mobile-fixed span{
    display:flex;
    align-items:center;
    gap:8px;
    color:#fff;
    font-size:12px;
    font-weight:800
  }
  .mobile-fixed img{width:30px}
  .mobile-fixed a{
    padding:9px 14px;
    background:#fff;
    color:var(--navy);
    font-size:12px;
    font-weight:900
  }
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
}