/* InvoiceIn60 redesign. Layout concept: a ledger on a stopwatch. Asymmetric editorial grid,
   mono timecodes as the one recurring device, single indigo accent doing the heavy lifting.
   Palette kept from the live site (globals.css): #050508 / #0a0a0f / #6e55f4 / #2e60ec / #ffad3a. */
:root{
  --bg:#050508; --surface:#0a0a0f; --raised:#101017;
  --card:rgba(255,255,255,.045); --card-2:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.10); --line-2:rgba(255,255,255,.14);
  --fg:#f5f5f7; --fg-2:rgba(255,255,255,.62); --fg-3:rgba(255,255,255,.40); --fg-4:rgba(255,255,255,.22);
  --accent:#6e55f4; --accent-2:#2e60ec; --accent-soft:rgba(110,85,244,.16); --accent-line:rgba(110,85,244,.38);
  --violet:#a89cf7; --gold:#ffad3a; --gold-soft:rgba(255,173,58,.10); --green:#34d399; --mac:#4B4FD4; --red:#ff6b6b;
  --f-sans:"Geist","Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --f-mono:"Geist Mono",ui-monospace,"SF Mono",Menlo,monospace;
  --r-s:8px; --r-m:14px; --r-l:22px;
  --ease:cubic-bezier(.16,1,.3,1);
  --wrap:1200px; --gutter:clamp(16px,4vw,40px);
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:400 16px/1.6 var(--f-sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--violet);outline-offset:3px;border-radius:6px}
::selection{background:var(--accent);color:#fff}
h1,h2,h3{text-wrap:balance;margin:0;letter-spacing:-.035em;line-height:1.02;font-weight:700}
p{margin:0}
.mono{font-family:var(--f-mono);font-variant-numeric:tabular-nums}

/* bilingual: both languages live in the markup, html.ja flips them */
html:not(.ja) .ja{display:none!important}
html.ja .en{display:none!important}
html.ja body{line-height:1.75}
html.ja h1,html.ja h2,html.ja h3{letter-spacing:-.01em;line-height:1.2}

.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(88px,11vw,160px);position:relative}
.rule-top{border-top:1px solid var(--line)}
.surface{background:var(--surface)}

/* type scale */
.d1{font-size:clamp(2.7rem,5.6vw,5rem)}
.d2{font-size:clamp(2.1rem,4.2vw,3.5rem)}
.d3{font-size:clamp(1.35rem,2vw,1.7rem);letter-spacing:-.025em;line-height:1.15}
.lede{font-size:clamp(1.02rem,1.3vw,1.15rem);color:var(--fg-2);max-width:60ch;line-height:1.6}
.small{font-size:.86rem;color:var(--fg-2)}
.tiny{font-size:.76rem;color:var(--fg-3)}
.label{font:600 .7rem/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--fg-3)}
.label.accent{color:var(--violet)}
.dim{color:var(--fg-3)}
.hl{color:var(--violet)}

/* chips (replace dot-separated strings) */
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;gap:6px;font:500 .74rem/1 var(--f-sans);color:var(--fg-2);padding:7px 11px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.025);white-space:nowrap}
.chip.accent{color:#d6cfff;border-color:var(--accent-line);background:var(--accent-soft)}
.chip.gold{color:var(--gold);border-color:rgba(255,173,58,.28);background:var(--gold-soft)}

/* buttons */
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;font:600 .92rem/1 var(--f-sans);padding:15px 22px;border-radius:12px;border:1px solid transparent;transition:transform .5s var(--ease),background .25s,border-color .25s,box-shadow .5s var(--ease);white-space:nowrap;isolation:isolate;overflow:hidden}
.btn svg{width:18px;height:18px;flex:none}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 1px 0 rgba(255,255,255,.25) inset,0 10px 30px -10px rgba(110,85,244,.7)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 1px 0 rgba(255,255,255,.25) inset,0 18px 40px -12px rgba(110,85,244,.85)}
.btn-primary::after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,transparent 30%,rgba(255,255,255,.28) 50%,transparent 70%);transform:translateX(-120%);transition:transform .9s var(--ease);z-index:-1}
.btn-primary:hover::after{transform:translateX(120%)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--line-2);color:var(--fg)}
.btn-ghost:hover{background:rgba(255,255,255,.08);transform:translateY(-1px)}
.btn-gold{background:var(--gold-soft);border-color:rgba(255,173,58,.3);color:var(--gold)}
.btn-gold:hover{background:rgba(255,173,58,.16);transform:translateY(-1px)}
.btn-white{background:#fff;color:#0b0b10}
.btn-white:hover{transform:translateY(-2px);background:#f1f1f4}
.btn-block{width:100%}
.btn-sm{padding:10px 14px;font-size:.8rem;border-radius:10px}
/* label swap on hover (kept from live hero) */
.swap{display:inline-grid}
.swap>span{grid-area:1/1;transition:transform .45s var(--ease),opacity .3s}
.swap>span:last-child{transform:translateY(110%);opacity:0}
.btn:hover .swap>span:first-child{transform:translateY(-110%);opacity:0}
.btn:hover .swap>span:last-child{transform:none;opacity:1}

/* header */
.nav{position:fixed;inset-inline:0;top:0;z-index:50;padding-top:calc(env(safe-area-inset-top,0px) + 14px);padding-inline:var(--gutter);pointer-events:none}
.nav-in{pointer-events:auto;max-width:var(--wrap);margin:0 auto;display:flex;align-items:center;gap:20px;padding:10px 10px 10px 16px;border-radius:16px;border:1px solid transparent;transition:background .4s,border-color .4s,backdrop-filter .4s,max-width .6s var(--ease)}
.nav.scrolled .nav-in{background:rgba(10,10,15,.72);border-color:var(--line);backdrop-filter:blur(18px) saturate(1.4);-webkit-backdrop-filter:blur(18px) saturate(1.4);max-width:1040px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.02em}
.brand img{width:30px;height:30px;border-radius:8px}
.nav-links{display:flex;gap:4px;margin-left:12px}
.nav-links a{font-size:.86rem;color:var(--fg-2);padding:8px 12px;border-radius:9px;transition:color .2s,background .2s;position:relative}
.nav-links a:hover{color:var(--fg);background:rgba(255,255,255,.05)}
.tip{position:absolute;left:50%;top:calc(100% + 6px);transform:translate(-50%,-4px);font-size:.7rem;white-space:nowrap;background:var(--raised);border:1px solid var(--line);padding:5px 9px;border-radius:7px;opacity:0;pointer-events:none;transition:.25s var(--ease)}
.nav-links a:hover .tip{opacity:1;transform:translate(-50%,0)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:8px}
.lang-btn{font:500 .8rem/1 var(--f-sans);padding:9px 12px;border-radius:9px;border:1px solid var(--line);background:transparent;color:var(--fg-2)}
.lang-btn:hover{color:var(--fg);border-color:var(--line-2)}
.nav .login{font-size:.82rem;color:var(--fg-2);padding:9px 12px;border-radius:9px;border:1px solid var(--line)}
.nav .login:hover{color:var(--fg)}
.burger{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:transparent;align-items:center;justify-content:center}
.burger span{display:block;width:16px;height:1.5px;background:var(--fg);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:16px;height:1.5px;background:var(--fg);transition:transform .3s var(--ease)}
.burger span::before{top:-5px}.burger span::after{top:5px}
.mnav{display:none}
@media (max-width:860px){
  .nav-links,.nav .login,.nav .nav-dl{display:none}
  .burger{display:inline-flex}
  .mnav{pointer-events:auto;display:grid;gap:4px;max-width:var(--wrap);margin:8px auto 0;padding:10px;border-radius:16px;background:rgba(10,10,15,.94);border:1px solid var(--line);backdrop-filter:blur(18px);transform-origin:top;transition:opacity .3s,transform .4s var(--ease)}
  .mnav a{padding:12px 10px;border-radius:10px;color:var(--fg-2)}
  .mnav a:hover{background:rgba(255,255,255,.05);color:var(--fg)}
  .mnav .go{color:var(--violet);font-weight:600}
  .nav:not(.open) .mnav{opacity:0;transform:scaleY(.96);pointer-events:none;visibility:hidden}
}

/* scroll clock (signature progress) */
.clock{position:fixed;right:max(16px,env(safe-area-inset-right,0px));bottom:calc(env(safe-area-inset-bottom,0px) + 16px);z-index:40;display:flex;align-items:center;gap:8px;padding:7px 11px 7px 8px;border-radius:999px;background:rgba(10,10,15,.8);border:1px solid var(--line);backdrop-filter:blur(12px);font:500 .72rem/1 var(--f-mono);color:var(--fg-2)}
.clock svg{width:18px;height:18px;transform:rotate(-90deg)}
.clock .trk{stroke:var(--line-2)}.clock .val{stroke:var(--accent);transition:stroke-dashoffset .15s linear}

/* reveal: content visible at rest; JS adds .pre only when it can animate it back */
.pre{opacity:0;transform:translateY(18px);filter:blur(6px)}
.in{opacity:1;transform:none;filter:none;transition:opacity .9s var(--ease),transform 1s var(--ease),filter .9s var(--ease)}

/* spotlight cards */
.spot{position:relative;border-radius:var(--r-l);background:var(--card);border:1px solid var(--line);overflow:hidden;isolation:isolate}
.spot::before{content:"";position:absolute;inset:-1px;border-radius:inherit;padding:1px;background:radial-gradient(420px circle at var(--mx,50%) var(--my,-20%),rgba(168,156,247,.55),transparent 45%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .4s;pointer-events:none}
.spot::after{content:"";position:absolute;inset:0;background:radial-gradient(520px circle at var(--mx,50%) var(--my,-20%),rgba(110,85,244,.10),transparent 50%);opacity:0;transition:opacity .4s;pointer-events:none;z-index:-1}
.spot:hover::before,.spot:hover::after{opacity:1}

/* checks */
.ticks{display:grid;gap:11px;margin:0;padding:0;list-style:none}
.ticks li{display:grid;grid-template-columns:18px 1fr;gap:11px;font-size:.88rem;color:var(--fg-2);line-height:1.5}
.ticks svg{width:18px;height:18px;margin-top:1px}
.ticks.muted li:first-child{color:var(--fg-3)}

/* mac window frame */
.win{border-radius:14px;background:#141418;border:1px solid rgba(255,255,255,.12);box-shadow:0 0 0 1px rgba(0,0,0,.6),0 40px 80px -30px rgba(0,0,0,.9),0 0 120px -40px rgba(110,85,244,.35);overflow:hidden}
.win-bar{display:flex;align-items:center;gap:7px;height:34px;padding:0 13px;background:#1c1c20;border-bottom:1px solid rgba(255,255,255,.07)}
.win-bar i{width:11px;height:11px;border-radius:50%;background:#ff5f57}.win-bar i:nth-child(2){background:#febc2e}.win-bar i:nth-child(3){background:#28c840}
.win-bar b{margin-left:8px;font:500 .72rem/1 var(--f-sans);color:var(--fg-3)}

/* footer */
.foot{border-top:1px solid var(--line);padding-block:clamp(64px,8vw,100px) 40px}
.foot-grid{display:grid;grid-template-columns:minmax(0,1.3fr) repeat(3,minmax(0,.5fr));gap:40px}
.foot h4{font:600 .7rem/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--fg-3);margin:0 0 16px}
.foot nav{display:grid;gap:10px}
.foot nav a{font-size:.88rem;color:var(--fg-2);transition:color .2s}
.foot nav a:hover{color:var(--fg)}
.foot-bottom{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center;margin-top:56px;padding-top:28px;border-top:1px solid var(--line)}
.wordmark{margin-top:48px;user-select:none}
.wordmark svg{width:100%;height:auto;display:block;overflow:visible}
.wordmark text{font:800 200px/1 var(--f-sans);letter-spacing:-12px;fill:transparent;stroke:rgba(255,255,255,.09);stroke-width:1}
.wordmark tspan{fill:rgba(110,85,244,.2);stroke:none}
@media (max-width:760px){.foot-grid{grid-template-columns:1fr 1fr}.foot-grid>div:first-child{grid-column:1/-1}}

/* forms */
.field{display:grid;gap:7px}
.field label{font-size:.78rem;font-weight:500;color:var(--fg-2)}
.input{width:100%;font:400 .92rem/1.4 var(--f-sans);color:var(--fg);background:rgba(255,255,255,.04);border:1px solid var(--line-2);border-radius:11px;padding:12px 14px;transition:border-color .2s,background .2s,box-shadow .2s}
.input::placeholder{color:var(--fg-4)}
.input:focus{outline:none;border-color:var(--accent);background:rgba(110,85,244,.06);box-shadow:0 0 0 4px rgba(110,85,244,.16)}
select.input{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:38px}
select.input option{background:#14141a}
textarea.input{resize:vertical;min-height:140px}

/* simple page shell */
.page-top{padding-top:clamp(130px,15vw,180px)}
.back{display:inline-flex;align-items:center;gap:8px;font-size:.84rem;color:var(--fg-3);transition:color .2s,gap .3s var(--ease)}
.back:hover{color:var(--fg);gap:12px}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);padding:clamp(22px,3vw,32px)}
.aside-list{display:grid}
.aside-list>div{padding-block:18px;border-top:1px solid var(--line);display:grid;gap:6px}
.aside-list>div:first-child{border-top:0;padding-top:0}
.copyable{display:inline-flex;align-items:center;gap:8px;color:var(--violet);font-weight:500;font-size:.9rem;word-break:break-all}
.copy-btn{font:500 .68rem/1 var(--f-mono);padding:5px 7px;border-radius:6px;border:1px solid var(--line-2);background:transparent;color:var(--fg-3)}
.copy-btn:hover{color:var(--fg)}

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