:root{
  color-scheme:dark;
  --bg:#060907;
  --bg-elevated:#0e1613;
  --surface:rgba(255,255,255,.035);
  --border:rgba(255,255,255,.09);
  --border-strong:rgba(185,243,206,.4);
  --text:#f3f8f5;
  --text-muted:#9fb6ab;
  --text-faint:#6a8478;
  --accent:#b9f3ce;
  --accent-2:#7be0a4;
  --accent-ink:#07160e;
  --danger:#ff9a8c;
  --radius-lg:24px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-lg:0 40px 100px -30px rgba(0,0,0,.65),0 0 0 1px rgba(255,255,255,.04);
  --shadow-btn:0 10px 30px -10px rgba(185,243,206,.45);
  --ease:cubic-bezier(.16,1,.3,1);
  --heading-start:#ffffff;
  --heading-end:#c9dcd2;
  --input-bg:rgba(0,0,0,.28);
  --card-top:rgba(255,255,255,.045);
  --card-bottom:rgba(255,255,255,.015);
  --grid:rgba(255,255,255,.025);
  --focus-ring:rgba(185,243,206,.18);
  --glow:rgba(185,243,206,.16);
  --topbar:rgba(6,9,7,.72);
  --font:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI Variable Text","Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-display:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI Variable Display","Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
}
:root[data-theme="light"]{
  color-scheme:light;
  --bg:#f3f7f4;
  --bg-elevated:#fff;
  --surface:rgba(255,255,255,.78);
  --border:rgba(23,65,44,.17);
  --border-strong:rgba(24,108,68,.5);
  --text:#142a20;
  --text-muted:#435e50;
  --text-faint:#536b5e;
  --accent:#176a43;
  --accent-2:#105335;
  --accent-ink:#fff;
  --danger:#ae3024;
  --shadow-lg:0 24px 64px -28px rgba(31,69,47,.2),0 0 0 1px rgba(255,255,255,.7);
  --shadow-btn:0 8px 22px -10px rgba(23,106,67,.35);
  --heading-start:#142a20;
  --heading-end:#316849;
  --input-bg:#fff;
  --card-top:rgba(255,255,255,.95);
  --card-bottom:rgba(255,255,255,.7);
  --grid:rgba(23,65,44,.035);
  --focus-ring:rgba(23,106,67,.16);
  --glow:rgba(23,106,67,.12);
  --topbar:rgba(243,247,244,.8);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px;overflow-x:clip}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(60% 50% at 15% 0%,rgba(185,243,206,.14),transparent 60%),
    radial-gradient(50% 40% at 100% 10%,rgba(122,224,164,.08),transparent 60%);
  background-attachment:fixed;
  min-height:100vh;
  position:relative;
  overflow-x:clip;
}
body::before{
  content:'';
  position:fixed;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(60% 60% at 50% 0%,black,transparent 80%);
  -webkit-mask-image:radial-gradient(60% 60% at 50% 0%,black,transparent 80%);
  z-index:0;
}
main{position:relative;z-index:1;max-width:1180px;margin:auto;padding:0 24px 60px}

/* Top bar */
.topbar{
  position:sticky;top:12px;z-index:30;
  display:flex;align-items:center;gap:18px;
  max-width:1180px;margin:12px auto 0;width:calc(100% - 48px);
  padding:10px 12px 10px 16px;
  border:1px solid var(--border);border-radius:999px;
  background:var(--topbar);
  backdrop-filter:blur(20px) saturate(140%);-webkit-backdrop-filter:blur(20px) saturate(140%);
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);flex:none}
.brand-name{font-weight:800;letter-spacing:2px;font-size:13px;text-transform:uppercase}
.logo{display:block;width:34px;height:34px;flex:none;border-radius:10px;overflow:hidden}
.logo img{display:block;width:100%;height:100%}
.topnav{display:flex;gap:4px;margin-left:12px}
.topnav a{color:var(--text-muted);text-decoration:none;font-size:14px;font-weight:600;padding:9px 14px;border-radius:999px;transition:color .2s var(--ease),background .2s var(--ease)}
.topnav a:hover{color:var(--text);background:var(--surface)}
.topnav a:focus-visible,.brand:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.header-tools{display:flex;align-items:center;gap:8px;margin-left:auto}
.language-control{margin:0;flex:none;letter-spacing:normal;text-transform:none}
.language-control select{font:inherit;font-size:13px;color:var(--text);background:var(--bg-elevated);border:1px solid var(--border);border-radius:999px;padding:9px 12px;max-width:132px;cursor:pointer}
.language-control select:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.theme-toggle{flex:none;display:flex;justify-content:center;align-items:center;width:40px;height:40px;margin:0;padding:0;border-radius:50%;background:var(--bg-elevated);color:var(--text-muted);border:1px solid var(--border);box-shadow:none}
.theme-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.theme-toggle svg{flex:none;width:18px;height:18px}
.theme-moon{display:none}
[data-theme="light"] .theme-sun{display:none}
[data-theme="light"] .theme-moon{display:block}
.muted{color:var(--text-faint)}

/* Typography */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px!important;letter-spacing:3px;text-transform:uppercase;
  color:var(--accent)!important;font-weight:700;margin:0 0 18px;
}
.eyebrow::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px 2px var(--glow)}
h1{
  font-family:var(--font-display);
  font-size:clamp(40px,5.6vw,68px);line-height:1.04;letter-spacing:-2px;font-weight:800;
  margin:0 0 22px;color:var(--text);
}
.accent-text{
  background:linear-gradient(100deg,var(--accent) 0%,var(--accent-2) 60%,var(--heading-end) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
h2{font-family:var(--font-display);font-size:23px;font-weight:750;margin:0 0 26px;letter-spacing:-.4px}
h3{font-family:var(--font-display);letter-spacing:-.2px}
p{line-height:1.7;color:var(--text-muted);margin:0 0 12px}
.lead{font-size:17px;max-width:560px}
a{color:var(--accent)}

/* Hero */
.hero{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:48px;align-items:center;padding:84px 0 56px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-primary{width:auto;margin:0;padding:17px 26px;gap:14px;font-size:16px}
.hero-secondary{display:inline-flex;align-items:center;padding:16px 22px;border-radius:var(--radius-sm);border:1px solid var(--border);color:var(--text);text-decoration:none;font-weight:700;font-size:15px;background:var(--surface);transition:border-color .2s var(--ease)}
.hero-secondary:hover{border-color:var(--border-strong)}
.hero-primary:focus-visible,.hero-secondary:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:30px}
.trust-row span{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted)}
.trust-row svg{flex:none;width:17px;height:17px;fill:none;stroke:var(--accent);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
/* Hero art: the IBA panda in a glowing frame */
.hero-art{position:relative;margin:0;justify-self:center;width:100%;max-width:500px}
.art-frame{position:relative;border-radius:30px;overflow:hidden;aspect-ratio:1100/1057;
  box-shadow:0 0 0 1px var(--border-strong),0 30px 90px -20px rgba(0,0,0,.6),0 0 120px -10px var(--glow);
  transform:perspective(1200px) rotateY(-4deg) rotateX(2deg);transition:transform .8s var(--ease)}
.hero-art:hover .art-frame{transform:perspective(1200px) rotateY(0) rotateX(0)}
.art-frame img{display:block;width:100%;height:100%;object-fit:cover;transform:scale(1.02)}
.art-frame::after{content:'';position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 55%,rgba(4,10,7,.55) 100%),radial-gradient(120% 80% at 80% 0%,transparent 60%,rgba(4,10,7,.25))}
.hero-art::before{content:'';position:absolute;inset:-18% -14% -10% -14%;z-index:-1;pointer-events:none;
  background:radial-gradient(50% 50% at 50% 45%,var(--glow),transparent 70%);filter:blur(10px)}
.art-chip{position:absolute;z-index:2;padding:8px 14px;border-radius:999px;font-size:13px;font-weight:700;color:var(--text);white-space:nowrap;
  background:var(--topbar);border:1px solid var(--border);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow-lg);
  animation:float 7s ease-in-out infinite}
.art-chip::before{content:'';display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--accent);margin-right:8px;vertical-align:1px;box-shadow:0 0 10px var(--glow)}
.art-chip-1{top:7%;left:-5%}.art-chip-2{top:30%;right:-3%;animation-delay:-2s}.art-chip-3{bottom:24%;left:-6%;animation-delay:-4s}.art-chip-4{bottom:-3%;right:12%;animation-delay:-1s}
.art-badge{position:absolute;z-index:2;left:22px;bottom:22px;display:flex;align-items:center;gap:12px;padding:10px 16px 10px 10px;border-radius:16px;
  background:rgba(6,12,9,.62);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);color:#f3f8f5}
.art-badge img{width:40px;height:40px;border-radius:11px;display:block}
.art-badge span{display:flex;flex-direction:column;line-height:1.25}
.art-badge strong{font-size:15px;letter-spacing:.3px}
.art-badge-text{font-size:12px;color:rgba(243,248,245,.75)}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}

/* Highlights band */
.highlights{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;margin:8px 0 24px;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;background:var(--border)}
.highlight{display:flex;flex-direction:column;gap:6px;padding:24px 26px;background:linear-gradient(180deg,var(--bg-elevated),var(--bg))}
.highlight strong{font-family:var(--font-display);font-size:clamp(26px,3vw,34px);font-weight:800;letter-spacing:-1px;
  background:linear-gradient(100deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.highlight span{font-size:13.5px;color:var(--text-muted);line-height:1.5}

/* Final call to action */
.final-cta{display:flex;align-items:center;justify-content:space-between;gap:28px;margin-top:84px;padding:44px 48px;border-radius:32px;position:relative;overflow:hidden;
  border:1px solid var(--border-strong);background:radial-gradient(80% 140% at 0% 0%,var(--glow),transparent 60%),linear-gradient(135deg,var(--card-top),var(--card-bottom));box-shadow:var(--shadow-lg)}
.final-cta h2{font-size:clamp(26px,3.2vw,38px);margin:0 0 10px;letter-spacing:-.8px}
.final-cta p{margin:0;max-width:520px}
.final-cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:none}
.final-cta-actions .hero-primary{width:auto;margin:0}
.final-cta-actions .hero-secondary{width:auto;margin:0;font-family:inherit;cursor:pointer;box-shadow:none}
.final-cta-actions .hero-secondary:hover{transform:none;filter:none}

/* Reveal on scroll (only when JavaScript runs and motion is welcome) */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.js .reveal.is-visible{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.js .reveal{opacity:1;transform:none}.art-chip{animation:none}.art-frame{transform:none}}

/* Sections */
.section-head{margin:0 0 26px}
.section-head h2{font-size:clamp(26px,3.2vw,36px);margin:0 0 8px;letter-spacing:-.8px}
.section-head p{margin:0}
.download{padding:40px 0 20px}
.features,.faq{padding:72px 0 0}

/* Platform tiles */
.page-navigation{display:flex;flex-direction:column;gap:14px;margin:0 0 30px}
.platforms{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.platform-tab{
  display:flex;align-items:center;justify-content:flex-start;gap:14px;text-align:left;
  width:100%;margin:0;padding:18px;border-radius:var(--radius-md);
  background:linear-gradient(180deg,var(--card-top),var(--card-bottom));
  border:1px solid var(--border);color:var(--text);box-shadow:none;cursor:pointer;
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.platform-tab:hover{border-color:var(--border-strong);filter:none}
.platform-tab:hover span{transform:none}
.platform-tab.active{border-color:var(--accent);box-shadow:0 0 0 3px var(--focus-ring),var(--shadow-lg)}
.platform-tab:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.tile-icon{flex:none;display:grid;place-items:center;width:46px;height:46px;border-radius:13px;background:var(--surface);border:1px solid var(--border);color:var(--accent)}
.platform-tab.active .tile-icon{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.tile-icon svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.tile-text{display:flex;flex-direction:column;gap:4px;min-width:0}
.tile-name{font-size:16px;font-weight:800}
.tile-meta{font-size:12px;font-weight:500;color:var(--text-faint);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.history-nav{display:flex;gap:8px;justify-content:flex-end}
.history-nav button{width:auto;margin:0;padding:8px 13px;gap:8px;background:var(--surface);color:var(--text-muted);border:1px solid var(--border);box-shadow:none;font-size:12.5px}
.history-nav button:disabled{opacity:.35;cursor:default}
.history-nav button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* Platform panel: action on the left, instructions on the right */
.platform-panel{animation:rise .35s var(--ease)}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.panel-head{margin:0 0 22px;max-width:760px}
.panel-head h2{font-size:clamp(24px,3vw,32px);margin:0 0 8px;letter-spacing:-.6px}
.panel-head .lead{margin:0;font-size:16px}
.panel-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,380px);gap:22px;align-items:start}
.panel-main,.panel-aside{display:grid;gap:20px;min-width:0}
.panel-aside{position:sticky;top:96px}
.aside-card{padding:26px}
.aside-card h3{font-size:17px;margin:0 0 14px}
.aside-card .enrollment-steps{margin:18px 0 0}

.card{
  background:linear-gradient(180deg,var(--card-top),var(--card-bottom));
  border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:36px;box-shadow:var(--shadow-lg);
  backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);
}
.program-stack,.program-list{display:grid;gap:20px}.program-list:empty{display:none}
.program-card h2{margin-bottom:8px;overflow-wrap:anywhere}.program-meta{margin:0 0 16px}
.program-description{white-space:pre-line;overflow-wrap:anywhere;margin:0 0 22px}

/* Forms and buttons */
label{display:block;font-size:13px;font-weight:600;color:var(--text-muted);margin:20px 0 8px}
input:not([type=checkbox]), #paymentCurrency{
  width:100%;padding:15px 16px;background:var(--input-bg);
  border:1px solid var(--border);border-radius:var(--radius-sm);
  color:var(--text);font-size:15px;font-family:inherit;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
input:not([type=checkbox])::placeholder{color:var(--text-faint)}
input:focus, #paymentCurrency:focus{outline:none;border-color:var(--border-strong);box-shadow:0 0 0 4px var(--focus-ring)}
input[aria-invalid="true"]{border-color:var(--danger)}
.hint{font-size:12.5px;margin:10px 0 0;color:var(--text-faint)}
#emailError,#payError{color:var(--danger);margin-top:6px}
#invAddress{word-break:break-all}
.consent{display:flex;gap:10px;font-size:12.5px;line-height:1.7;color:var(--text-muted);align-items:flex-start;margin-top:20px;cursor:pointer}
.consent input{flex:none;width:22px;height:22px;min-width:22px;margin:1px 0 0;accent-color:var(--accent);cursor:pointer}
button,.button{
  display:flex;justify-content:space-between;align-items:center;width:100%;
  padding:16px 20px;border:0;border-radius:var(--radius-sm);
  background:linear-gradient(180deg,var(--accent),var(--accent-2));
  color:var(--accent-ink);font-size:15px;font-weight:700;font-family:inherit;
  cursor:pointer;text-decoration:none;margin-top:24px;
  box-shadow:var(--shadow-btn);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),filter .18s var(--ease);
}
button:hover,.button:hover{transform:translateY(-1px);filter:brightness(1.05)}
button:active,.button:active{transform:translateY(0)}
button:disabled{opacity:.5;cursor:wait;transform:none}
button span,.button span{transition:transform .2s var(--ease)}
button:hover span,.button:hover span{transform:translateX(3px)}
.secondary{background:transparent;color:var(--text-muted);border:1px solid var(--border);box-shadow:none;font-size:13.5px;font-weight:600;padding:13px}
.secondary:hover{border-color:var(--border-strong);color:var(--text);filter:none}
.link-button{display:inline-flex;width:auto;margin:10px 0 0;padding:4px 0;background:none;border:0;box-shadow:none;color:var(--accent);font-size:13px;font-weight:600;cursor:pointer}
.link-button:hover{transform:none;filter:none;text-decoration:underline}
.link-button:hover span{transform:none}
.link-button:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.reset-hint{margin:0 0 4px}
#resetMessage{overflow-wrap:anywhere}
#download{display:block;margin:18px 0 0;font-size:13.5px;text-align:center}
#invQr{display:block;margin:4px auto 20px;border-radius:16px;padding:14px;background:#fff;box-shadow:var(--shadow-lg)}

/* Steps */
ol{list-style:none;padding:0;margin:28px 0;counter-reset:steps;position:relative}
li{padding:4px 0 26px 44px;color:var(--text-faint);counter-increment:steps;position:relative;font-size:14.5px}
li:before{
  content:counter(steps);position:absolute;left:0;top:-2px;
  display:inline-grid;place-items:center;width:30px;height:30px;
  border:1px solid var(--border);border-radius:50%;font-size:12px;font-weight:700;
  background:var(--bg-elevated);transition:all .3s var(--ease);
}
li:not(:last-child):after{content:'';position:absolute;left:14px;top:30px;bottom:0;width:1px;background:var(--border)}
li.active{color:var(--text)}
li.active:before{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);box-shadow:0 0 0 4px var(--focus-ring)}
#error{color:var(--danger);font-size:13.5px;margin:14px 0 0}
.privacy{font-size:12.5px;color:var(--text-faint)}
.privacy h2{font-size:15px;margin-bottom:10px;color:var(--text)}
.privacy p{font-size:12.5px}

/* iPhone guide in the side column */
.ios-guide .guide-body{font-size:14px;overflow-wrap:anywhere}
.guide-steps{margin:18px 0}
.guide-steps li{padding:0 0 18px;margin:0 0 18px;border-bottom:1px solid var(--border);color:var(--text)}
.guide-steps li::before,.guide-steps li::after{display:none}
.guide-body h3{font-size:15px;line-height:1.5;color:var(--text);margin:0 0 8px}
.guide-body p{font-size:13.5px}
.guide-sources{font-size:12px;margin-top:16px}

/* Features */
.feature-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.feature{padding:26px;border:1px solid var(--border);border-radius:var(--radius-lg);background:linear-gradient(180deg,var(--card-top),var(--card-bottom))}
.feature-icon{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--surface);border:1px solid var(--border-strong);color:var(--accent);margin-bottom:18px}
.feature-icon svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.feature h3{font-size:17px;margin:0 0 8px}
.feature p{font-size:14px;margin:0}

/* FAQ */
.faq-list{display:grid;gap:10px;max-width:860px}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);transition:border-color .2s var(--ease)}
.faq-item[open]{border-color:var(--border-strong)}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 52px 18px 22px;font-weight:700;font-size:15.5px;position:relative;color:var(--text)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'+';position:absolute;right:22px;top:50%;transform:translateY(-50%);font-size:22px;font-weight:400;color:var(--accent);transition:transform .2s var(--ease)}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-item summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:var(--radius-md)}
.faq-item p{padding:0 22px 20px;margin:0;font-size:14.5px}

/* Footer */
.site-footer{display:grid;grid-template-columns:auto 1fr;gap:14px 24px;align-items:center;border-top:1px solid var(--border);padding-top:28px;margin-top:80px;color:var(--text-faint);font-size:13px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:2px;text-transform:uppercase;color:var(--text);font-size:12px}
.footer-brand .logo{width:28px;height:28px;border-radius:8px}
.footer-links{display:flex;flex-wrap:wrap;gap:6px 20px;justify-content:flex-end;align-items:center}
.footer-links a,.footer-links .link-button{color:var(--text-muted);text-decoration:none;font-size:13px;font-weight:600;margin:0}
.footer-links a:hover,.footer-links .link-button:hover{color:var(--text)}
.footer-note{grid-column:1/-1;margin:0;font-size:12px;color:var(--text-faint)}

[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
html[lang="zh-CN"] h1{letter-spacing:-.5px;line-height:1.2}
html[lang="zh-CN"] .eyebrow{letter-spacing:1px}

/* Account: devices and payment (unchanged components) */
#paymentCurrency{margin-bottom:16px;cursor:pointer;color-scheme:dark}
:root[data-theme="light"] #paymentCurrency{color-scheme:light}
#paymentCurrency:disabled{opacity:.6;cursor:wait}
.device-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}
.device-heading h2{margin-bottom:14px}.device-heading .eyebrow{margin-bottom:10px;font-size:10px!important;letter-spacing:2px}
.device-heading p{margin:0}.compact{width:auto;margin:0;white-space:nowrap;font-size:12px;padding:10px 12px}
.device-list{display:grid;gap:12px;margin:22px 0 12px}
.device-choice{justify-content:flex-start;gap:15px;text-align:left;margin:0;padding:18px;background:var(--surface);color:var(--text);border:1px solid var(--border);box-shadow:none}
.device-choice.selected{border-color:var(--accent);box-shadow:0 0 0 2px var(--focus-ring)}
.device-choice:focus-visible,.compact:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
.device-choice:hover span{transform:none}.device-icon{font-size:32px;color:var(--accent);width:26px;flex:none}
.device-details{display:flex;flex-direction:column;gap:5px;min-width:0}.device-details strong{overflow-wrap:anywhere;font-size:15px}
.device-meta{font-size:11px;color:var(--text-faint);font-weight:400;overflow-wrap:anywhere}
.device-state{font-size:12px;color:var(--accent);font-weight:500}.device-check{margin-left:auto;flex:none;color:var(--accent)}
.device-empty{border:1px dashed var(--border);border-radius:var(--radius-md);padding:22px;font-size:14px}
.selected-device{margin-top:24px;padding-top:22px;border-top:1px solid var(--border)}
#selectedDeviceName{font-weight:700;color:var(--text);overflow-wrap:anywhere}.selected-device .hint{margin-top:12px}
.device-onboarding{margin-top:24px;padding:24px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md)}
.device-onboarding h3{font-size:17px;margin:0 0 16px}.enrollment-steps{margin:28px 0 0}.enrollment-steps li{line-height:1.65;color:var(--text-muted);font-size:13px}
.manual-device{margin-top:24px;padding-top:18px;border-top:1px solid var(--border)}
.manual-device summary{color:var(--text-muted);font-size:12px;line-height:1.65;cursor:pointer}.manual-device summary:focus-visible{outline:2px solid var(--accent);outline-offset:5px}
#safariNotice{border-left:2px solid var(--accent);padding-left:12px;margin-bottom:16px}
#deviceNotice,#enrollmentStatus{overflow-wrap:anywhere}

/* Responsive */
@media(max-width:1020px){
  .hero{grid-template-columns:1fr;gap:28px;padding:56px 0 32px}
  .hero-art{max-width:460px}
  .highlights{grid-template-columns:repeat(2,minmax(0,1fr))}
  .final-cta{flex-direction:column;align-items:flex-start;padding:34px 30px}
  .panel-grid{grid-template-columns:1fr}
  .panel-aside{position:static}
  .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .topnav{display:none}
}
@media(max-width:700px){
  .platforms{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:560px){
  main{padding:0 14px 40px}
  .topbar{width:calc(100% - 28px);top:8px;margin-top:8px;padding:8px 8px 8px 12px;gap:10px}
  .brand-name{letter-spacing:1px}
  .language-control select{max-width:118px;padding:9px}
  .hero{padding:36px 0 20px}
  .hero-art{max-width:340px}
  .art-chip{font-size:11.5px;padding:6px 10px}
  .art-chip-1{left:-3%}.art-chip-2{right:-3%}.art-chip-3{left:-4%}
  .art-badge{left:12px;bottom:12px;padding:8px 12px 8px 8px}
  .art-badge img{width:32px;height:32px}
  .highlight{padding:18px}
  .final-cta{padding:28px 22px;margin-top:60px}
  .final-cta-actions,.final-cta-actions .hero-primary,.final-cta-actions .hero-secondary{width:100%}
  .hero-primary{width:100%}
  .hero-secondary{width:100%;justify-content:center}
  .lead{font-size:15.5px}
  .platform-tab{padding:14px 12px;gap:10px}
  .tile-icon{width:38px;height:38px;border-radius:11px}
  .tile-name{font-size:15px}
  .card{padding:26px 20px}
  .aside-card{padding:22px 18px}
  .feature-grid{grid-template-columns:1fr}
  .site-footer{grid-template-columns:1fr}
  .footer-links{justify-content:flex-start}
  .device-onboarding{padding:18px 14px}.device-choice{padding:15px 12px;gap:12px}.device-heading{align-items:flex-start}.device-heading .compact{flex:none}.device-details strong{font-size:14px}
}