/* ==========================================================================
   Take One: Vocal Studio — shared styles for document pages
   Palette sampled from the app icon. Vermilion (--shu) is reserved for
   "record" and "signature" only; it never appears as decoration.
   ========================================================================== */

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500&family=Noto+Serif+JP:wght@200;300&display=swap");

:root{
  --ink:#050505;
  --sumi:#12101C;
  --slate:#1C212A;
  --washi:#DEDDD9;
  --body:#A9ADB2;
  --titanium:#767C84;
  --shu:#E0452F;
  --hair:rgba(222,221,217,.09);
  --hair-strong:rgba(222,221,217,.18);
  --glass:rgba(222,221,217,.028);
  --glass-hi:rgba(222,221,217,.055);

  --display:"Noto Serif JP","Hiragino Mincho ProN","Yu Mincho","Songti SC",Georgia,"Times New Roman",serif;
  --ui:"Inter",-apple-system,BlinkMacSystemFont,"SF Pro Text","Hiragino Sans","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;

  --gut:clamp(1.25rem,5vw,2.5rem);
  --max:1180px;
  --doc:720px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-zen:cubic-bezier(.19,1,.22,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--ink);color:var(--body);
  font-family:var(--ui);font-weight:300;
  font-size:clamp(1rem,.96rem + .18vw,1.06rem);line-height:1.78;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--washi);text-decoration:none;border-bottom:1px solid var(--hair-strong);transition:border-color .35s var(--ease),color .35s var(--ease)}
a:hover{color:#fff;border-bottom-color:var(--washi)}
button,input,textarea{font:inherit;color:inherit}
:focus-visible{outline:1.5px solid var(--washi);outline-offset:3px;border-radius:2px}
::selection{background:rgba(224,69,47,.28);color:#fff}

/* paper grain + vignette, matching the landing page */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.42'/%3E%3C/svg%3E");
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(120% 80% at 50% 0%,transparent 38%,rgba(0,0,0,.5) 100%);
}
.wrap{position:relative;z-index:1}

.skip{position:absolute;left:-9999px;top:0;padding:.9rem 1.2rem;background:var(--sumi);z-index:200;border:1px solid var(--hair-strong)}
.skip:focus{left:1rem;top:1rem}
.inner{width:min(100% - var(--gut)*2,var(--max));margin-inline:auto}
.doc-inner{width:min(100% - var(--gut)*2,var(--doc));margin-inline:auto}

/* ---------------- nav ---------------- */
.nav{
  position:sticky;top:0;z-index:100;display:flex;align-items:center;gap:clamp(.6rem,2vw,1.5rem);
  padding:.8rem var(--gut);
  background:rgba(5,5,5,.76);backdrop-filter:blur(22px) saturate(1.4);-webkit-backdrop-filter:blur(22px) saturate(1.4);
  border-bottom:1px solid var(--hair);
}
.brand{display:flex;align-items:center;gap:.6rem;flex:0 0 auto;border:0}
.brand svg{width:22px;height:22px}
.wm{display:block;background:url("/assets/wordmark.png") no-repeat center/contain;aspect-ratio:218/69}
.brand .wm{height:17px;opacity:.95}
.nav-links{display:flex;gap:clamp(.9rem,2.1vw,1.9rem);margin-inline-start:auto;list-style:none;padding:0;margin-block:0}
.nav-links a{
  font-size:.815rem;font-weight:300;letter-spacing:.055em;color:var(--body);border:0;
  position:relative;padding-block:.35rem;white-space:nowrap;
}
.nav-links a::after{content:"";position:absolute;inset-inline-start:0;bottom:0;height:1px;width:0;background:var(--washi);transition:width .45s var(--ease)}
.nav-links a:hover{color:var(--washi)}
.nav-links a:hover::after{width:100%}
.nav-links a[aria-current="page"]{color:var(--washi)}
.nav-links a[aria-current="page"]::after{width:100%;background:var(--shu)}

/* ---------------- document header ---------------- */
.doc-head{padding:clamp(3.5rem,10vh,6.5rem) 0 clamp(2rem,5vh,3.4rem);text-align:center;position:relative;overflow:hidden}
.doc-head::before{
  content:"";position:absolute;top:-40%;left:50%;transform:translateX(-50%);
  width:min(900px,140vw);aspect-ratio:1;pointer-events:none;
  background:radial-gradient(circle at 50% 50%,rgba(28,33,42,.7),transparent 62%);
}
.doc-head .enso{width:clamp(58px,9vw,84px);height:auto;margin:0 auto 1.6rem;display:block;position:relative}
.eyebrow{
  font-size:.66rem;font-weight:400;letter-spacing:.36em;text-transform:uppercase;
  color:var(--titanium);margin:0 0 1.1rem;position:relative;
}
h1{
  font-family:var(--display);font-weight:200;color:var(--washi);
  font-size:clamp(2.1rem,1.2rem + 3.4vw,3.4rem);line-height:1.1;letter-spacing:-.02em;
  margin:0;text-wrap:balance;position:relative;
}
.doc-meta{margin:1.4rem 0 0;font-size:.82rem;color:var(--titanium);letter-spacing:.03em;position:relative}
.doc-meta b{font-weight:400;color:var(--body)}

/* ---------------- document body ---------------- */
.doc{padding-block:clamp(2.5rem,6vh,4rem) clamp(4rem,12vh,7rem)}
.doc h2{
  font-family:var(--display);font-weight:200;color:var(--washi);
  font-size:clamp(1.45rem,1.1rem + 1.2vw,1.95rem);line-height:1.25;letter-spacing:-.012em;
  margin:3.6rem 0 1.1rem;scroll-margin-top:6rem;
}
.doc h2:first-child{margin-top:0}
.doc h3{
  font-family:var(--ui);font-weight:500;color:var(--washi);
  font-size:1.005rem;letter-spacing:.005em;margin:2.1rem 0 .55rem;
}
.doc p{margin:0 0 1.15rem}
.doc ul,.doc ol{margin:0 0 1.3rem;padding-inline-start:1.15rem}
.doc li{margin-bottom:.62rem}
.doc li::marker{color:var(--titanium)}
.doc strong{color:var(--washi);font-weight:500}
.doc hr{height:1px;border:0;background:linear-gradient(90deg,transparent,var(--hair) 20%,var(--hair) 80%,transparent);margin:3.2rem 0}

/* section number, set like a seal */
.doc h2{position:relative}
.doc h2 .n{
  font-family:var(--ui);font-size:.6rem;font-weight:400;letter-spacing:.28em;
  color:var(--titanium);display:block;margin-bottom:.5rem;text-transform:uppercase;
}

/* callout — used for the privacy summary and safety notes */
.note{
  border:1px solid var(--hair);border-radius:16px;background:var(--glass);
  padding:clamp(1.2rem,3vw,1.7rem) clamp(1.2rem,3vw,1.9rem);margin:0 0 2rem;
}
.note.seal{border-color:rgba(224,69,47,.3)}
.note p:last-child{margin-bottom:0}
.note .k{
  display:flex;align-items:center;gap:.55rem;font-size:.66rem;letter-spacing:.28em;
  text-transform:uppercase;color:var(--titanium);margin:0 0 .8rem;
}
.note .k::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--shu);flex:0 0 auto}

/* key/value table for the data summary */
.tbl{width:100%;border-collapse:collapse;margin:0 0 2rem;font-size:.94rem}
.tbl th,.tbl td{text-align:start;padding:.85rem 1rem;border-bottom:1px solid var(--hair);vertical-align:top}
.tbl th{color:var(--washi);font-weight:500;width:34%}
.tbl tr:last-child th,.tbl tr:last-child td{border-bottom:0}
.tbl caption{caption-side:top;text-align:start;color:var(--titanium);font-size:.66rem;letter-spacing:.28em;text-transform:uppercase;padding-bottom:.9rem}

/* table of contents */
.toc{border:1px solid var(--hair);border-radius:16px;padding:1.4rem 1.6rem;margin:0 0 3rem;background:var(--glass)}
.toc p{font-size:.66rem;letter-spacing:.28em;text-transform:uppercase;color:var(--titanium);margin:0 0 .9rem}
.toc ol{margin:0;padding-inline-start:1.2rem;columns:2;column-gap:2rem}
.toc li{margin-bottom:.42rem;break-inside:avoid}
.toc a{border:0;color:var(--body);font-size:.92rem}
.toc a:hover{color:var(--washi)}
@media(max-width:640px){.toc ol{columns:1}}

/* ---------------- support page ---------------- */
.band{padding-block:clamp(3rem,8vh,5rem);border-top:1px solid var(--hair)}
.band-head{margin-bottom:2.6rem}
.band-head h2{
  font-family:var(--display);font-weight:200;color:var(--washi);
  font-size:clamp(1.6rem,1.1rem + 1.6vw,2.3rem);line-height:1.2;letter-spacing:-.015em;margin:0 0 .7rem;
}
.band-head p{margin:0;max-width:58ch}

.cards{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.card{
  border:1px solid var(--hair);border-radius:18px;background:var(--glass);
  padding:1.5rem 1.55rem;transition:border-color .45s var(--ease),background .45s var(--ease);
}
.card:hover{border-color:var(--hair-strong);background:var(--glass-hi)}
.card .k{font-size:.63rem;letter-spacing:.28em;text-transform:uppercase;color:var(--titanium);margin:0 0 .75rem}
.card h3{font-family:var(--ui);font-weight:500;color:var(--washi);font-size:1.03rem;margin:0 0 .5rem}
.card p{margin:0 0 .9rem;font-size:.95rem}
.card p:last-child{margin-bottom:0}
.card a{font-size:.95rem}

.mailrow{display:flex;flex-wrap:wrap;align-items:center;gap:.7rem;margin:0}
.copy-btn{
  background:transparent;border:1px solid var(--hair);border-radius:999px;
  padding:.2rem .62rem;font-size:.61rem;letter-spacing:.18em;text-transform:uppercase;
  color:var(--titanium);cursor:pointer;transition:all .35s var(--ease);
}
.copy-btn:hover{border-color:var(--hair-strong);color:var(--washi)}
.copy-btn[data-done="true"]{color:var(--shu);border-color:rgba(224,69,47,.4)}

/* accordion */
.qa{border-bottom:1px solid var(--hair)}
.qa:first-of-type{border-top:1px solid var(--hair)}
.qa-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:1.4rem;
  background:transparent;border:0;padding:1.35rem 0;cursor:pointer;text-align:start;
  font-family:var(--display);font-weight:300;color:var(--washi);
  font-size:clamp(1rem,.95rem + .3vw,1.14rem);line-height:1.4;
}
.qa-btn .ic{position:relative;width:14px;height:14px;flex:0 0 auto}
.qa-btn .ic::before,.qa-btn .ic::after{
  content:"";position:absolute;background:var(--titanium);transition:transform .45s var(--ease),background .45s var(--ease);
}
.qa-btn .ic::before{inset-inline:0;top:6.5px;height:1px}
.qa-btn .ic::after{inset-block:0;left:6.5px;width:1px}
.qa[data-open="true"] .qa-btn .ic::after{transform:scaleY(0)}
.qa[data-open="true"] .qa-btn .ic::before{background:var(--washi)}
.qa-body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .55s var(--ease)}
.qa[data-open="true"] .qa-body{grid-template-rows:1fr}
.qa-body>div{overflow:hidden}
.qa-body p{margin:0 0 1.15rem;max-width:66ch;font-size:.97rem}
.qa-body ul{margin:0 0 1.15rem;padding-inline-start:1.15rem;max-width:66ch;font-size:.97rem}
.qa-body li{margin-bottom:.5rem}
.qa-body :first-child{padding-top:.1rem}

/* steps */
.steps{counter-reset:s;list-style:none;padding:0;margin:0}
.steps li{
  counter-increment:s;position:relative;padding-inline-start:2.7rem;margin-bottom:1.25rem;max-width:66ch;
}
.steps li::before{
  content:counter(s);position:absolute;inset-inline-start:0;top:.12rem;
  width:1.65rem;height:1.65rem;border-radius:50%;border:1px solid var(--hair-strong);
  display:grid;place-items:center;font-size:.72rem;color:var(--titanium);
}

/* ---------------- footer ---------------- */
.footer{border-top:1px solid var(--hair);padding-block:clamp(3rem,8vh,4.5rem) 2rem;background:linear-gradient(180deg,transparent,rgba(18,16,28,.4))}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:clamp(2rem,6vw,4rem);align-items:start}
.foot-brand .enso{width:34px;height:auto;margin-bottom:1rem;display:block}
.foot-brand .wm{height:19px;margin-bottom:1rem}
.foot-brand p{margin:0;max-width:34ch;font-size:.9rem;color:var(--titanium)}
.foot-cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:1.6rem}
.foot-cols p{font-size:.63rem;letter-spacing:.28em;text-transform:uppercase;color:var(--titanium);margin:0 0 .95rem}
.foot-links{list-style:none;padding:0;margin:0}
.foot-links li{margin-bottom:.6rem}
.foot-links a{font-size:.88rem;color:var(--body);border:0}
.foot-links a:hover{color:var(--washi)}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;align-items:center;
  margin-top:clamp(2.4rem,6vh,3.4rem);padding-top:1.6rem;border-top:1px solid var(--hair);
  font-size:.78rem;color:var(--titanium);
}
.foot-bottom .jp{font-family:var(--display);letter-spacing:.28em}

@media(max-width:720px){
  .foot-grid{grid-template-columns:1fr;gap:2.4rem}
  .nav-links{gap:1rem}
  .nav-links a{font-size:.76rem}
}
@media(max-width:420px){
  .nav{gap:.5rem;padding-inline:1rem}
  .nav-links{gap:.8rem}
  .nav-links a{font-size:.72rem;letter-spacing:.03em}
}

/* ---------------- the Ensō ---------------- */
.enso{overflow:visible;fill:url(#inkGrad);filter:drop-shadow(0 0 8px rgba(222,221,217,.14))}
@keyframes breathe{0%,100%{transform:scale(.985);opacity:.9}42%{transform:scale(1.015);opacity:1}}
.breathing{animation:breathe 9s var(--ease-zen) infinite;transform-origin:50% 50%}

/* reveal on scroll */
.rv{opacity:0;transform:translateY(16px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv-d1{transition-delay:.08s}.rv-d2{transition-delay:.16s}.rv-d3{transition-delay:.24s}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .rv{opacity:1;transform:none}
}

@media print{
  body{background:#fff;color:#111}
  body::before,body::after{display:none}
  .nav,.footer,.toc,.skip{display:none}
  a{color:#111;border:0}
  .doc h2,.doc h3,h1{color:#000}
  .note,.card{border-color:#ccc}
}