:root{
  --bg:#faf7f7;
  --bg-soft:#f3eef0;
  --surface-1:#ffffff;
  --surface-2:#fdfbfb;
  --line:rgba(28,18,21,.09);
  --line-strong:rgba(28,18,21,.16);
  --line-brand:rgba(205,17,51,.32);
  --txt:#1c1215;
  --txt-dim:#5c4c50;
  --txt-mute:#7a6468;
  --brand:#cd1133;
  --brand-deep:#a50d28;
  --brand-ink:#8f0a22;
  --grad:linear-gradient(100deg,#e8385a 0%,#cd1133 46%,#8f0a22 100%);
  --grad-btn:linear-gradient(100deg,#d51537 0%,#cd1133 45%,#b00e2c 100%);
  --font-sans:"Inter var","Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",
              "PingFang SC","Hiragino Sans GB","Microsoft YaHei UI","Microsoft YaHei",
              "Source Han Sans SC","Noto Sans CJK SC",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-mono:ui-monospace,"SF Mono",SFMono-Regular,"JetBrains Mono",Menlo,Consolas,
              "Liberation Mono","Courier New",monospace;
  --wrap:1160px;
  --nav-h:68px;
  --radius:14px;
  --radius-sm:10px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --sat:env(safe-area-inset-top,0px);
  --sab:env(safe-area-inset-bottom,0px);
  --sal:env(safe-area-inset-left,0px);
  --sar:env(safe-area-inset-right,0px);
  --icon-copy:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='9' y='9' width='12' height='12' rx='2'/%3E%3Cpath d='M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1'/%3E%3C/svg%3E");
  --icon-check:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E");
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
  scroll-padding-top:calc(var(--nav-h) + var(--sat) + 20px);
}
body{
  background:var(--bg);
  color:var(--txt);
  font-family:var(--font-sans);
  font-size:15px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  -webkit-tap-highlight-color:transparent;
}
a{color:inherit;text-decoration:none}
img,video,svg{display:block;max-width:100%}
ul{list-style:none}
button{font:inherit;color:inherit;background:none;border:none}
.wrap{
  width:100%;max-width:var(--wrap);margin:0 auto;
  padding-left:max(24px,var(--sal));
  padding-right:max(24px,var(--sar));
}
:where(a,button,[tabindex]):focus-visible{
  outline:2px solid var(--brand);
  outline-offset:3px;
  border-radius:8px;
}
.skip-link{
  position:fixed;top:12px;left:50%;z-index:200;
  transform:translate(-50%,-180%);
  padding:10px 22px;border-radius:999px;
  background:#fff;border:1px solid var(--line-brand);
  font-size:13px;transition:transform .2s var(--ease);
  box-shadow:0 6px 18px rgba(28,18,21,.10);
}
.skip-link:focus-visible{transform:translate(-50%,0)}
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  height:calc(var(--nav-h) + var(--sat));
  padding:var(--sat) max(0px,var(--sal)) 0 max(0px,var(--sar));
  border-bottom:1px solid transparent;
  transition:background .3s,border-color .3s,backdrop-filter .3s;
}
.nav::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:linear-gradient(180deg,rgba(250,247,247,.72),rgba(250,247,247,0));
  transition:opacity .3s var(--ease);
}
.nav.scrolled::before{opacity:0}
.nav.scrolled{
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h)}
.brand{display:flex;align-items:center;gap:11px;border-radius:10px;min-height:44px}
.brand-mark{
  height:34px;width:auto;display:block;flex:none;
  -webkit-user-drag:none;user-select:none;
}
.nav-links{display:flex;align-items:center;gap:28px;font-size:14px}
.nav-links a{
  display:inline-flex;align-items:center;
  min-height:44px;padding:0 4px;
  color:var(--txt-dim);transition:color .2s;border-radius:999px;
}
.nav-links a:hover{color:var(--txt)}
.nav-links a.nav-cta{
  padding:9px 20px;border-radius:999px;border:1px solid var(--line);
  color:var(--txt);background:rgba(255,255,255,.04);
  transition:border-color .22s var(--ease),background-color .22s var(--ease);
}
.nav-links a.nav-cta:hover{border-color:var(--line-brand);background:rgba(205,17,51,.06)}
.hero{padding:calc(var(--nav-h) + var(--sat) + 100px) 0 96px;text-align:center}
.eyebrow{
  display:inline-block;font-family:var(--font-mono);
  font-size:11px;font-weight:500;letter-spacing:.24em;color:var(--brand);
  padding:7px 18px;border:1px solid rgba(205,17,51,.26);border-radius:999px;
  background:rgba(205,17,51,.05);margin-bottom:28px;
}
.hero-title{
  font-size:clamp(25px,calc(7.1vw - 4px),66px);
  font-weight:700;line-height:1.22;letter-spacing:-.02em;
}
.hero-line{display:block}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{
  max-width:640px;margin:26px auto 0;color:var(--txt-dim);
  font-size:clamp(15px,1.5vw,16.5px);
}
.hero-techs{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;margin-top:30px}
.hero-techs li{
  font-size:13px;letter-spacing:.16em;color:var(--txt-dim);
  padding:0 22px;line-height:1.4;
}
.hero-techs li+li{border-left:1px solid var(--line-strong)}
.hero-actions{display:flex;gap:14px;justify-content:center;margin-top:40px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:50px;padding:0 30px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),
             background-color .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{background:var(--grad-btn);color:#fff;box-shadow:0 8px 22px rgba(205,17,51,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(205,17,51,.38)}
.btn-ghost{border-color:var(--line-strong);color:var(--txt);background:#fff;
  box-shadow:0 2px 8px rgba(28,18,21,.05)}
.btn-ghost:hover{border-color:var(--line-brand);background:#fff}
.btn:active{transform:translateY(0) scale(.985)}
.metrics-cap{
  display:flex;align-items:center;justify-content:center;gap:14px;
  margin:72px 0 0;
  font-size:12px;letter-spacing:.16em;color:var(--txt-mute);
}
.metrics-cap::before,.metrics-cap::after{
  content:"";flex:none;width:clamp(18px,5vw,48px);height:1px;background:var(--line);
}
.hero-metrics{
  display:grid;grid-template-columns:repeat(3,1fr);
  margin-top:20px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.hero-metrics li{padding:28px 24px;border-left:1px solid var(--line)}
.hero-metrics li:first-child{border-left:none}
.m-num{
  display:block;font-size:clamp(30px,3.4vw,46px);font-weight:700;
  line-height:1.05;letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.m-unit{
  font-size:.34em;font-weight:600;letter-spacing:0;margin-left:.24em;
  -webkit-text-fill-color:#7a6468;color:#7a6468;
}
.m-label{
  display:block;margin-top:10px;
  font-size:12.5px;color:var(--txt-mute);letter-spacing:.04em;
}
.section{padding:104px 0;scroll-margin-top:calc(var(--nav-h) + 24px)}
.sec-head{margin-bottom:44px}
.sec-head h2{
  font-size:clamp(22px,3vw,32px);font-weight:700;letter-spacing:-.01em;
  position:relative;display:inline-block;padding-left:16px;line-height:1.3;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;
  border-radius:2px;background:var(--grad);
}
.sec-head p{
  margin-top:10px;padding-left:16px;color:var(--txt-mute);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
}
.video-box{
  position:relative;border-radius:var(--radius);overflow:hidden;
  background:#000;border:1px solid var(--line);
  box-shadow:0 24px 60px rgba(28,18,21,.16),0 6px 18px rgba(28,18,21,.08);
  aspect-ratio:16/9;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.video-box:hover{border-color:var(--line-brand);
  box-shadow:0 28px 70px rgba(28,18,21,.20),0 8px 20px rgba(28,18,21,.10)}
.video-el{width:100%;height:100%;object-fit:cover;background:#000;
  color:#f3eef0}
.video-el a{color:#fff}
.video-cover{
  position:absolute;inset:0;z-index:3;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:20px;cursor:pointer;
  background:linear-gradient(180deg,rgba(12,7,8,.32),rgba(12,7,8,.72));
  transition:opacity .3s var(--ease);
}
.video-cover.hide{opacity:0;pointer-events:none}
.play-btn{
  width:82px;height:82px;border-radius:50%;cursor:pointer;
  background:var(--grad-btn);display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 10px rgba(205,17,51,.10),0 12px 34px rgba(205,17,51,.38);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.play-btn:hover{transform:scale(1.07);box-shadow:0 0 0 14px rgba(205,17,51,.13),0 16px 44px rgba(205,17,51,.46)}
.play-btn:active{transform:scale(.97)}
.play-btn svg{width:34px;height:34px;fill:#fff;margin-left:4px}
.video-tip{font-size:12.5px;letter-spacing:.24em;color:rgba(246,239,240,.8)}
.card{
  padding:22px 24px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--surface-1);
  box-shadow:0 2px 10px rgba(28,18,21,.05);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.card:hover{border-color:var(--line-brand);transform:translateY(-2px);
  box-shadow:0 10px 26px rgba(28,18,21,.10)}
.card h3{font-size:16px;font-weight:700;margin-bottom:7px}
.card p{font-size:14px;color:var(--txt-mute)}
.contact-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:22px}
.contact-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-item{
  -webkit-appearance:none;appearance:none;
  position:relative;display:block;width:100%;text-align:left;cursor:pointer;
  padding:22px 24px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--surface-1);
  box-shadow:0 2px 10px rgba(28,18,21,.05);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
  -webkit-user-select:text;user-select:text;
}
.contact-item--wide{grid-column:1 / -1}
.contact-item:hover{border-color:var(--line-brand);box-shadow:0 10px 26px rgba(28,18,21,.10)}
.contact-item:active{transform:scale(.988)}
.contact-item.copied{border-color:var(--brand);box-shadow:0 10px 26px rgba(205,17,51,.14)}
.ci-label{
  display:block;font-size:12px;color:var(--txt-mute);
  letter-spacing:.12em;margin-bottom:8px;
}
.ci-value{
  display:block;font-size:15.5px;font-weight:600;line-height:1.5;
  word-break:normal;overflow-wrap:break-word;
}
.ci-hint{
  display:block;margin-top:10px;font-size:11.5px;
  letter-spacing:.1em;color:var(--txt-mute);transition:color .2s var(--ease);
}
.hint-idle{display:none}
.hint-done{display:none}
.contact-item.copied .hint-idle{display:none}
.contact-item.copied .hint-done{display:inline;color:var(--brand)}
.ci-icon{
  display:none;
  position:absolute;top:20px;right:20px;width:16px;height:16px;
  background-color:var(--txt-mute);opacity:.6;
  transition:opacity .2s var(--ease),background-color .2s var(--ease);
  -webkit-mask-image:var(--icon-copy);mask-image:var(--icon-copy);
  -webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;
  -webkit-mask-position:center;mask-position:center;
  -webkit-mask-size:contain;mask-size:contain;
}
.contact-item:hover .ci-icon,
.contact-item:focus-visible .ci-icon{opacity:1;background-color:var(--brand)}
.contact-item.copied .ci-icon{
  opacity:1;background-color:var(--brand);
  -webkit-mask-image:var(--icon-check);mask-image:var(--icon-check);
}
@media (hover:none){.ci-icon{opacity:.85}}
.contact-note{padding:26px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--surface-1);box-shadow:0 2px 10px rgba(28,18,21,.05)}
.contact-note h3{font-size:16px;margin-bottom:16px;font-weight:700}
.contact-note li{
  font-size:14px;color:var(--txt-dim);padding-left:18px;position:relative;margin-bottom:11px;
}
.contact-note li:last-child{margin-bottom:0}
.contact-note li::before{
  content:"";position:absolute;left:0;top:.62em;width:5px;height:5px;border-radius:50%;
  background:var(--brand);opacity:.9;
}
.footer{
  border-top:1px solid var(--line);
  padding:34px 0 calc(34px + var(--sab));
  margin-top:48px;
}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.footer-brand{font-weight:700;letter-spacing:.1em;font-size:13.5px}
.footer-meta{display:flex;gap:20px;font-size:12.5px;color:var(--txt-mute);flex-wrap:wrap}
.fade-up{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s var(--ease)}
.fade-up.in-view{opacity:1;transform:none}
.toast{
  position:fixed;left:50%;z-index:99;
  bottom:calc(44px + var(--sab));
  max-width:calc(100vw - 48px);
  text-align:center;
  transform:translate(-50%,20px);
  padding:11px 26px;border-radius:999px;background:rgba(255,255,255,.97);
  border:1px solid var(--line-strong);font-size:13.5px;color:var(--txt);
  opacity:0;pointer-events:none;transition:opacity .28s,transform .28s var(--ease);
  box-shadow:0 12px 40px rgba(28,18,21,.18);
}
.toast.show{opacity:1;transform:translate(-50%,0)}