/* ==========================================================================
   Coinstars Digital Asset Management Co., Ltd.
   Ink & gold — marketing site
   ========================================================================== */

:root{
  --ink:#0e0e10;
  --ink-2:#151518;
  --ink-3:#1d1d21;

  --gold:#e4b33c;
  --gold-bright:#f2c75a;
  --gold-dim:#a8842a;

  --cream:#faf7f0;
  --paper:#ffffff;
  --line:#e4dccb;
  --line-strong:#d3c7ae;

  --text:#15140f;
  --muted:#6f6a5e;
  --muted-2:#8b8577;

  --font:"DM Sans",ui-sans-serif,system-ui,sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;

  --shell:1200px;
  --radius:6px;
  --header-fg:#f6f2e8;

  --shadow-card:0 1px 2px rgba(21,20,15,.04);
  --shadow-lift:0 18px 40px -28px rgba(21,20,15,.55);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html,body{overflow-x:clip}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.625;
  color:var(--text);background:var(--cream);-webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%}
h1,h2,h3,h4,p,ul,dl{margin:0}
ul{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}

.sprite{position:absolute;width:0;height:0;overflow:hidden}
.ico{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}
.ico-16{width:16px;height:16px}
.ico-18{width:18px;height:18px}
.ico-20{width:20px;height:20px}
.ico-24{width:24px;height:24px}

.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:20px}
@media (min-width:640px){.shell{padding-inline:32px}}
@media (min-width:1024px){.shell{padding-inline:40px}}

.mono{font-family:var(--mono);font-size:.94em;letter-spacing:.02em}
.label{
  display:block;font-family:var(--mono);font-size:11px;line-height:1.5;
  letter-spacing:.16em;text-transform:uppercase;color:var(--gold-dim);
}
.on-dark .label,.label-dark{color:var(--gold)}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 22px;border:1px solid transparent;border-radius:var(--radius);
  font-size:15px;font-weight:600;letter-spacing:-.01em;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn-sm{height:38px;padding:0 16px;font-size:13px;font-weight:500}
.btn-gold{background:var(--gold);color:#1a1508}
.btn-gold:hover{background:var(--gold-bright)}
.btn-outline{border-color:rgba(246,242,232,.32);color:#f6f2e8}
.btn-outline:hover{border-color:var(--gold);color:var(--gold)}

.text-link{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:600;color:var(--text);
  border-bottom:1px solid transparent;padding-bottom:2px;
  transition:color .2s ease,border-color .2s ease;
}
.text-link .ico{color:var(--gold-dim);transition:transform .2s ease}
.text-link:hover{color:var(--gold-dim);border-color:var(--gold)}
.text-link:hover .ico{transform:translateX(3px)}

/* ==========================================================================
   header
   ========================================================================== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;padding:18px 0;
  transition:background-color .3s ease,padding .3s ease,box-shadow .3s ease;
  color:var(--header-fg);
}
.site-header.is-scrolled{
  padding:10px 0;background:rgba(250,247,240,.95);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  box-shadow:0 1px 0 rgba(21,20,15,.1);--header-fg:#15140f;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}

.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:34px;height:34px;color:var(--gold);flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:20px;font-weight:600;letter-spacing:-.02em;color:var(--header-fg)}
.brand-sub{
  font-family:var(--mono);font-size:8.5px;letter-spacing:.15em;text-transform:uppercase;
  color:var(--gold-dim);margin-top:2px;
}
.site-header:not(.is-scrolled) .brand-sub{color:rgba(228,179,60,.85)}

.nav{display:none;align-items:center;gap:32px}
@media (min-width:1024px){.nav{display:flex}}
.nav a{font-size:14px;font-weight:500;color:var(--header-fg);padding:6px 0;position:relative}
.nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--gold);
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav a:hover{color:var(--gold)}
.nav a:hover::after{transform:scaleX(1)}
.site-header.is-scrolled .nav a:hover{color:var(--gold-dim)}
.site-header.is-scrolled .nav a::after{background:var(--gold-dim)}

.header-cta{display:none}
@media (min-width:1024px){.header-cta{display:inline-flex}}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;padding:0;border:0;background:transparent;cursor:pointer;
}
@media (min-width:1024px){.menu-toggle{display:none}}

/* mobile menu */
.menu-overlay{position:fixed;inset:0;z-index:55;background:rgba(14,14,16,.55);opacity:0;transition:opacity .3s ease}
.menu-overlay.is-open{opacity:1}
.mobile-menu{
  position:fixed;top:0;bottom:0;left:0;z-index:60;width:82%;max-width:360px;
  display:flex;flex-direction:column;padding:26px 24px 28px;background:var(--cream);
  transform:translateX(-100%);transition:transform .32s cubic-bezier(.4,0,.2,1);overflow-y:auto;
}
.mobile-menu.is-open{transform:translateX(0)}
.menu-close{
  position:absolute;top:16px;right:16px;width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);border-radius:50%;background:transparent;cursor:pointer;
}
.brand-dark .brand-name{color:var(--text)}
.mobile-nav{display:flex;flex-direction:column;margin-top:44px}
.mobile-nav a{padding:15px 0;font-size:17px;font-weight:500;border-bottom:1px solid var(--line)}
.mobile-nav a:first-child{border-top:1px solid var(--line)}
.mobile-foot{
  margin-top:auto;padding-top:28px;font-family:var(--mono);font-size:10px;
  line-height:1.8;letter-spacing:.14em;text-transform:uppercase;color:var(--muted-2);
}
.mobile-foot span{color:var(--text);letter-spacing:.04em}

/* ==========================================================================
   hero background
   ========================================================================== */
.hero{position:relative;overflow:hidden;background:var(--ink);color:#f6f2e8;padding:120px 0 64px}
.hero-bg{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.hero-glow{
  position:absolute;top:-200px;right:-140px;width:780px;height:780px;border-radius:50%;
  background:radial-gradient(circle,rgba(228,179,60,.28) 0%,rgba(228,179,60,.06) 44%,transparent 68%);
  filter:blur(8px);
}
.hero-ring{position:absolute;right:-100px;bottom:-200px;width:640px;height:640px;color:var(--gold);opacity:.13}
/* ==========================================================================
   section shells
   ========================================================================== */
.section{padding:84px 0}
@media (min-width:1024px){.section{padding:108px 0}}
.section-alt{background:var(--paper)}
section[id]{scroll-margin-top:86px}

.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{
  margin-top:16px;font-size:clamp(27px,3.5vw,42px);line-height:1.1;
  font-weight:600;letter-spacing:-.03em;text-wrap:balance;
}
.section-sub{margin-top:16px;font-size:16px;line-height:1.7;color:var(--muted);max-width:680px}
@media (min-width:640px){.section-sub{font-size:17px}}

/* ==========================================================================
   contact
   ========================================================================== */
.contact{position:relative;overflow:hidden;background:var(--ink);color:#f6f2e8;padding:72px 0}
@media (min-width:1024px){.contact{padding:96px 0}}
.contact-bg{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.contact-glow{
  position:absolute;bottom:-260px;left:-160px;width:640px;height:640px;border-radius:50%;
  background:radial-gradient(circle,rgba(228,179,60,.22) 0%,transparent 66%);filter:blur(8px);
}
.contact-inner{
  position:relative;display:grid;grid-template-columns:minmax(0,1fr);gap:40px;align-items:start;
}
@media (min-width:1024px){.contact-inner{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:64px;align-items:center}}
.contact-copy h2{
  margin-top:16px;font-size:clamp(26px,3.4vw,40px);line-height:1.12;
  font-weight:600;letter-spacing:-.03em;color:#fbf8f0;max-width:18ch;
}
.contact-copy p{margin-top:18px;max-width:520px;font-size:16px;line-height:1.7;color:rgba(246,242,232,.66)}
.contact-card{
  padding:26px;border-radius:8px;
  background:rgba(255,255,255,.04);border:1px solid rgba(228,179,60,.24);
}
@media (min-width:640px){.contact-card{padding:30px 32px}}
.contact-row{display:flex;align-items:flex-start;gap:14px;padding:14px 0;border-top:1px solid rgba(246,242,232,.09)}
.contact-row:first-child{border-top:0;padding-top:0}
.contact-icon{
  display:inline-flex;align-items:center;justify-content:center;flex:none;
  width:34px;height:34px;border-radius:50%;background:rgba(228,179,60,.14);color:var(--gold);
}
.contact-label{
  display:block;font-family:var(--mono);font-size:10px;letter-spacing:.13em;
  text-transform:uppercase;color:rgba(246,242,232,.42);margin-bottom:3px;
}
.contact-line{font-size:14.5px;line-height:1.6;color:#f6f2e8}
.contact-note{
  margin-top:16px;padding-top:14px;border-top:1px solid rgba(246,242,232,.09);
  font-size:12.5px;line-height:1.6;color:rgba(246,242,232,.42);
}

/* ==========================================================================
   footer
   ========================================================================== */
.site-footer{background:var(--ink);color:#f6f2e8;padding:52px 0 36px;border-top:1px solid rgba(246,242,232,.08)}
.footer-top{display:flex;flex-direction:column;gap:26px}
@media (min-width:768px){.footer-top{flex-direction:row;align-items:center;justify-content:space-between}}
.brand-footer .brand-name{color:#f6f2e8}
.footer-nav{display:flex;flex-wrap:wrap;gap:24px}
.footer-nav a{font-size:13px;font-weight:500;color:rgba(246,242,232,.64);transition:color .2s ease}
.footer-nav a:hover{color:var(--gold)}
.footer-rule{height:1px;background:rgba(246,242,232,.1);margin:30px 0 24px}
.footer-company{max-width:880px}
.footer-name{font-size:14px;font-weight:600;color:rgba(246,242,232,.9);margin-bottom:6px}
.footer-company p + p{font-size:12.5px;line-height:1.75;color:rgba(246,242,232,.45)}
.footer-company .mono{color:rgba(246,242,232,.66)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:8px 32px;justify-content:space-between;margin-top:26px;padding-top:20px;border-top:1px solid rgba(246,242,232,.08)}
.footer-copy,.footer-note{font-size:12px;line-height:1.7;color:rgba(246,242,232,.38)}
.footer-note{max-width:560px}

/* reveal */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .7s ease,transform .7s ease}
.reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* reveal */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .7s ease,transform .7s ease}
.reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* ==========================================================================
   hero (centered)
   ========================================================================== */
.hero-hero{position:relative;overflow:hidden;background:var(--ink);color:#f6f2e8;padding:132px 0 0}
.hero-center{
  position:relative;display:flex;flex-direction:column;align-items:center;text-align:center;
  padding-bottom:56px;
}
.hero-center h1{
  margin-top:18px;font-size:clamp(36px,7vw,72px);line-height:1.02;
  font-weight:600;letter-spacing:-.04em;color:#fbf8f0;text-wrap:balance;
}
.hero-sub{
  margin-top:18px;font-size:clamp(15px,2vw,18px);line-height:1.5;
  color:rgba(246,242,232,.55);letter-spacing:.01em;
}
.hero-cta{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:34px}

/* four props */
.props{
  position:relative;display:grid;grid-template-columns:minmax(0,1fr);
  border-top:1px solid rgba(246,242,232,.1);
}
@media (min-width:720px){.props{grid-template-columns:repeat(4,minmax(0,1fr))}}
.prop{padding:26px 0;border-bottom:1px solid rgba(246,242,232,.1)}
.prop:last-child{border-bottom:0}
@media (min-width:720px){
  .prop{padding:30px 24px;border-bottom:0;border-left:1px solid rgba(246,242,232,.1)}
  .prop:first-child{border-left:0;padding-left:0}
}
.prop-num{font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:var(--gold)}
.prop h3{margin-top:10px;font-size:17px;font-weight:600;letter-spacing:-.01em;color:#f6f2e8}
.prop p{margin-top:6px;font-size:13.5px;line-height:1.6;color:rgba(246,242,232,.5)}

/* ==========================================================================
   who we serve
   ========================================================================== */
.usecases{display:grid;grid-template-columns:minmax(0,1fr);gap:16px}
@media (min-width:700px){.usecases{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1100px){.usecases{grid-template-columns:repeat(4,minmax(0,1fr))}}
.usecase{
  display:flex;flex-direction:column;padding:22px;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-card);
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.usecase:hover{border-color:rgba(228,179,60,.55);box-shadow:var(--shadow-lift);transform:translateY(-2px)}
.usecase h3{font-size:15.5px;line-height:1.35;font-weight:600;letter-spacing:-.01em;margin-bottom:8px}
.usecase p{font-size:13.5px;line-height:1.65;color:var(--muted);margin-bottom:16px}
.usecase .text-link{margin-top:auto;font-size:12.5px;gap:5px}

/* ==========================================================================
   growth engine
   ========================================================================== */
.growth-head{text-align:center;margin-bottom:40px}
.growth-head h2{
  margin-top:14px;font-size:clamp(26px,3.6vw,40px);line-height:1.06;
  font-weight:600;letter-spacing:-.03em;
}
.growth-word{
  margin-top:4px;font-size:clamp(40px,8.5vw,88px);line-height:1;
  font-weight:600;letter-spacing:-.045em;color:var(--gold);
}
.growth-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:16px}
@media (min-width:760px){.growth-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.growth-card{
  padding:26px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.growth-card:hover{border-color:rgba(228,179,60,.55);box-shadow:var(--shadow-lift);transform:translateY(-2px)}
.growth-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:50%;margin-bottom:16px;
  background:rgba(228,179,60,.16);color:var(--gold-dim);
}
.growth-card h3{font-size:17px;font-weight:600;letter-spacing:-.01em;margin-bottom:8px}
.growth-card p{font-size:14px;line-height:1.65;color:var(--muted)}

.support-band{
  display:flex;flex-direction:column;gap:14px;margin-top:16px;padding:24px;
  border:1px solid var(--line);border-radius:var(--radius);background:var(--cream);
}
@media (min-width:760px){.support-band{flex-direction:row;align-items:center;gap:18px}.support-band .text-link{margin-left:auto}}
.support-band h3{font-size:16px;font-weight:600;letter-spacing:-.01em}
.support-band p{font-size:13.5px;line-height:1.6;color:var(--muted);margin-top:2px}

/* ==========================================================================
   developers
   ========================================================================== */
.code-card{
  margin-bottom:20px;background:var(--ink);border:1px solid rgba(228,179,60,.22);
  border-radius:8px;overflow:hidden;
}
.code-tabs{
  display:flex;gap:4px;padding:10px 12px;overflow-x:auto;
  border-bottom:1px solid rgba(246,242,232,.08);
}
.code-tab{
  border:0;background:transparent;cursor:pointer;white-space:nowrap;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.03em;
  color:rgba(246,242,232,.5);padding:7px 12px;border-radius:5px;
  transition:background-color .2s ease,color .2s ease;
}
.code-tab:hover{color:#f6f2e8;background:rgba(246,242,232,.06)}
.code-tab.is-active{background:rgba(228,179,60,.14);color:var(--gold)}
.code-panel{
  margin:0;padding:22px 20px;overflow-x:auto;
  font-family:var(--mono);font-size:12.5px;line-height:1.8;
  color:rgba(246,242,232,.86);
}
.code-panel code{font-family:inherit;white-space:pre}
.c-com{color:rgba(246,242,232,.3)}
.c-key{color:var(--gold)}
.c-str{color:#d8c7a0}
.c-num{color:#e8a95b}

.dev-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:16px}
@media (min-width:860px){.dev-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.dev-card{
  padding:26px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
}
.dev-card h3{font-size:17px;line-height:1.4;font-weight:600;letter-spacing:-.01em;margin-bottom:8px}
.dev-card p{font-size:14px;line-height:1.7;color:var(--muted);margin-bottom:16px}

/* ==========================================================================
   footer columns
   ========================================================================== */
.footer-cols{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;margin-bottom:34px}
@media (min-width:640px){.footer-cols{grid-template-columns:repeat(3,minmax(0,1fr))}}
.footer-cols h4{
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:rgba(246,242,232,.42);font-weight:500;margin-bottom:14px;
}
.footer-cols ul{display:flex;flex-direction:column;gap:9px}
.footer-cols a{font-size:13px;color:rgba(246,242,232,.68);transition:color .2s ease}
.footer-cols a:hover{color:var(--gold)}
.contact-copy .btn{margin-top:26px}
@media (max-width:640px){
  .code-panel{font-size:11px;line-height:1.75;padding:16px}
  .code-tab{font-size:11px;padding:6px 10px}
}