/* Dotted "input canvas" ground; hero = a greeting that re-types itself in each language; two product slabs; one inbox. */
:root{
  --bg:#F2F3F5; --dot:#D6DAE1; --surface:#FFFFFF; --surface-2:#F6F7F9; --border:#E3E5EA; --border-2:#D5DAE3;
  --text:#16181D; --text-2:#3D424D; --muted:#5B6170; --inverse:#16181D; --on-inverse:#FFFFFF;
  --ink:#141A24; --ink-text:#ECEEF2; --ink-muted:#9AA6B8; --ink-line:#26303F;
  --blue:#2D62D8; --blue-ink:#1E4BB0; --red:#B83A26; --green:#1C7A50; --green-ink:#145C3C; --violet:#5E44C9; --violet-ink:#46309E;
  --danger:#B42318;
  --shadow:0 1px 2px rgba(20,22,28,.04),0 28px 60px -28px rgba(20,22,28,.22);
  --sys:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans","Microsoft YaHei","Segoe UI",sans-serif;
  --f-display:'Bricolage Grotesque','Noto Sans SC','Noto Sans JP','Noto Sans KR','Noto Sans Arabic',var(--sys);
  --f-body:'Instrument Sans','Noto Sans SC','Noto Sans JP','Noto Sans Arabic',var(--sys);
  --f-mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0E1014; --dot:#23272F; --surface:#16191F; --surface-2:#1D2129; --border:#2A2F38; --border-2:#353B46;
  --text:#ECEEF2; --text-2:#C4C9D2; --muted:#9AA1AD; --inverse:#ECEEF2; --on-inverse:#0E1014;
  --ink:#1A2230; --ink-text:#ECEEF2; --ink-muted:#9AA6B8; --ink-line:#2A3446;
  --blue:#7FA6F5; --blue-ink:#A9C3FA; --red:#F08A74; --green:#5FD39C; --green-ink:#8FE3BB; --violet:#A994F5; --violet-ink:#C7B9FA;
  --danger:#F97066;
  --shadow:0 0 0 1px rgba(255,255,255,.03); color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0E1014; --dot:#23272F; --surface:#16191F; --surface-2:#1D2129; --border:#2A2F38; --border-2:#353B46;
  --text:#ECEEF2; --text-2:#C4C9D2; --muted:#9AA1AD; --inverse:#ECEEF2; --on-inverse:#0E1014;
  --ink:#1A2230; --ink-text:#ECEEF2; --ink-muted:#9AA6B8; --ink-line:#2A3446;
  --blue:#7FA6F5; --blue-ink:#A9C3FA; --red:#F08A74; --green:#5FD39C; --green-ink:#8FE3BB; --violet:#A994F5; --violet-ink:#C7B9FA;
  --danger:#F97066;
  --shadow:0 0 0 1px rgba(255,255,255,.03); color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;background-color:var(--bg);background-image:radial-gradient(var(--dot) 1px,transparent 1px);background-size:22px 22px;color:var(--text);font:400 16px/1.6 var(--f-body);-webkit-font-smoothing:antialiased}
:lang(ja){--f-body:'Instrument Sans','Noto Sans JP',var(--sys)}
:lang(ar){--f-body:'Noto Sans Arabic','Instrument Sans',var(--sys);--f-display:'Noto Sans Arabic','Bricolage Grotesque',var(--sys)}
:lang(zh){text-autospace:normal;line-break:strict}
:lang(zh-TW){--f-body:'Instrument Sans','Noto Sans TC',"PingFang TC","Microsoft JhengHei",var(--sys);--f-display:'Bricolage Grotesque','Noto Sans TC',"PingFang TC",var(--sys)}
:lang(zh-HK){--f-body:'Instrument Sans','Noto Sans HK',"PingFang HK","Microsoft JhengHei",var(--sys);--f-display:'Bricolage Grotesque','Noto Sans HK',"PingFang HK",var(--sys)}
:lang(ko){--f-body:'Instrument Sans','Noto Sans KR',"Apple SD Gothic Neo","Malgun Gothic",var(--sys);--f-display:'Bricolage Grotesque','Noto Sans KR',"Apple SD Gothic Neo",var(--sys);word-break:keep-all}
:lang(hi){--f-body:'Instrument Sans','Noto Sans Devanagari',"Kohinoor Devanagari","Nirmala UI",var(--sys);--f-display:'Bricolage Grotesque','Noto Sans Devanagari',"Kohinoor Devanagari",var(--sys)}
:lang(hi) body,:lang(hi) .hero h1{line-height:1.45}
.flip:dir(rtl){transform:scaleX(-1)}
a{color:inherit}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:8px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.wrap{max-width:1180px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
@media (min-width:720px){.wrap{padding-left:max(40px,env(safe-area-inset-left,0px));padding-right:max(40px,env(safe-area-inset-right,0px))}}

header{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:18px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand b{font:700 22px/1 'Bricolage Grotesque',var(--sys);letter-spacing:-.02em}
.nav{display:flex;align-items:center;gap:6px}
.nav a{display:none;padding:10px 14px;border-radius:999px;text-decoration:none;color:var(--text-2);font-weight:500;font-size:15px}
.nav a:hover{background:var(--surface)}
@media (min-width:640px){.nav a{display:inline-block}}
.lang{position:relative;display:flex;align-items:center}
.lang svg{position:absolute;inset-inline-start:12px;pointer-events:none;color:var(--muted)}
.lang select{appearance:none;-webkit-appearance:none;height:44px;padding-inline:36px 16px;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--text);font:500 14px var(--f-body);cursor:pointer}

.hero{padding-block:56px 40px;display:grid;gap:28px}
.dots{display:flex;gap:8px}
.dots i{width:12px;height:12px;border-radius:999px;transition:transform .4s}
.dots i:nth-child(1){background:var(--blue)}.dots i:nth-child(2){background:var(--red)}.dots i:nth-child(3){background:var(--green)}.dots i:nth-child(4){background:var(--violet)}
.dots i.on{transform:scale(1.5)}
.stage{display:flex;flex-direction:column;gap:10px;min-height:calc(clamp(72px,15vw,168px) * 1.15 + 34px)}
.tag{font:500 13px/1 var(--f-mono);color:var(--muted);letter-spacing:.04em;display:flex;gap:10px;align-items:center}
.tag span{padding:5px 8px;border-radius:6px;background:var(--surface);border:1px solid var(--border)}
.greet{margin:0;font:700 clamp(72px,15vw,168px)/1.1 var(--f-display);letter-spacing:-.04em;color:var(--text);white-space:nowrap;overflow:hidden;padding-block:.04em}
.greet .ch{display:inline-block;animation:in .55s cubic-bezier(.2,.7,.2,1) both}
.greet .caret{display:inline-block;width:.07em;height:.8em;margin-inline-start:.06em;vertical-align:-.04em;border-radius:2px;background:var(--c,var(--blue));animation:blink 1.1s steps(1) infinite}
@keyframes in{from{opacity:0;transform:translateY(.25em);filter:blur(8px)}to{opacity:1;transform:none;filter:none}}
@keyframes blink{50%{opacity:0}}
.hero h1{margin:0;max-width:16em;font:700 clamp(30px,4.4vw,52px)/1.18 var(--f-display);letter-spacing:-.02em;text-wrap:balance}
:lang(zh) .hero h1,:lang(ja) .hero h1,:lang(ko) .hero h1,:lang(hi) .hero h1{letter-spacing:0}
.hero p.sub{margin:0;max-width:38em;font-size:clamp(17px,1.6vw,19px);color:var(--muted);text-wrap:pretty}
.ctas{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding-inline:22px;border-radius:14px;text-decoration:none;font:600 16px var(--f-body);border:1px solid transparent;cursor:pointer;transition:transform .15s,opacity .15s}
.btn:hover{transform:translateY(-1px)}
.btn[disabled]{opacity:.55;cursor:progress;transform:none}
.btn.sm{min-height:44px;padding-inline:16px;font-size:15px;border-radius:12px}
.btn.primary{background:var(--inverse);color:var(--on-inverse)}
.btn.ghost{background:var(--surface);border-color:var(--border);color:var(--text)}

section{padding-block:40px}
.eyebrow{font:500 13px/1 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0 0 18px}
:lang(zh) .eyebrow,:lang(ja) .eyebrow,:lang(ar) .eyebrow,:lang(ko) .eyebrow,:lang(hi) .eyebrow{font-family:var(--f-body);letter-spacing:.08em}
.grid{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:900px){.grid{grid-template-columns:1fr 1fr}}
.card{min-width:0;display:flex;flex-direction:column;gap:22px;padding:28px;border-radius:28px;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow)}
.card.ink{background:var(--ink);border-color:var(--ink-line);color:var(--ink-text)}
.card-top{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px}
.kind{display:inline-flex;align-items:center;gap:8px;height:30px;padding-inline:12px;border-radius:999px;border:1px dashed var(--border-2);font-size:13px;font-weight:500;color:var(--muted)}
.ink .kind{border-color:var(--ink-line);color:var(--ink-muted)}
.domain{font:400 13px var(--f-mono);color:var(--muted)}
.ink .domain{color:var(--ink-muted)}
.card h2{margin:0;font:700 clamp(30px,3.4vw,40px)/1.05 'Bricolage Grotesque',var(--sys);letter-spacing:-.03em}
.card p{margin:0;color:var(--text-2);max-width:34em}
.ink p{color:var(--ink-muted)}
.modes{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(220px,100%),1fr));gap:10px}
.modes li{display:flex;flex-direction:column;gap:10px;padding:14px 16px;border-radius:18px;background:var(--surface-2);border:1px solid var(--border);min-width:0}
.route{display:flex;align-items:center;gap:6px;font-size:13px;font-weight:500}
.route i{width:8px;height:8px;border-radius:999px;flex:none}
.sample{font-size:15px;line-height:1.5;color:var(--text);overflow-wrap:anywhere}
.sample.word{font:700 26px/1 'Bricolage Grotesque',var(--sys);letter-spacing:-.03em}
.m1 .route{color:var(--blue-ink)}.m1 i{background:var(--blue)}
.m2 .route{color:var(--red)}.m2 i{background:var(--red)}
.m3 .route{color:var(--green-ink)}.m3 i{background:var(--green)}
.m4 .route{color:var(--violet-ink)}.m4 i{background:var(--violet)}
.serif{font-family:'Noto Serif SC','Songti SC','SimSun',serif;letter-spacing:.06em}
ins{text-decoration:none;border-bottom:2px solid var(--green);background:color-mix(in srgb,var(--green) 18%,transparent);padding-inline:2px}
del{color:var(--muted)}
.card .btn{align-self:flex-start;margin-top:auto}
.ink .btn.primary{background:var(--ink-text);color:var(--ink)}

.player{border-radius:20px;border:1px solid var(--ink-line);background:#0B0F16;overflow:hidden}
.player-bar{display:flex;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--ink-line);font:500 12px var(--f-mono);color:#9AA6B8}
.rec{width:8px;height:8px;border-radius:999px;background:#F08A74;box-shadow:0 0 0 4px rgba(240,138,116,.18);animation:pulse 1.6s ease-in-out infinite;flex:none}
@keyframes pulse{50%{box-shadow:0 0 0 7px rgba(240,138,116,0)}}
.wave{display:flex;align-items:center;gap:3px;height:64px;padding-inline:16px}
.wave b{flex:1;max-width:6px;border-radius:3px;background:#3B4A63;height:var(--h);animation:wv 1.2s ease-in-out infinite alternate;animation-delay:var(--d)}
@keyframes wv{to{height:calc(var(--h) * .35)}}
.subs{display:flex;flex-direction:column;gap:6px;padding:16px 18px 20px;min-height:132px}
.subs .src{font:400 14px/1.5 'Instrument Sans',var(--sys);color:#9AA6B8}
.subs .dst{font-size:18px;line-height:1.5;color:#F4F5F7;font-weight:500}
.subs .codes{font:500 11px var(--f-mono);color:#7FA6F5;letter-spacing:.08em}
.subs.swap>*{animation:in .5s cubic-bezier(.2,.7,.2,1) both}
.subs.swap .dst{animation-delay:.12s}

/* contact */
.contact{display:grid;gap:32px;padding:clamp(24px,5vw,56px);border-radius:32px;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow)}
@media (min-width:960px){.contact{grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:56px}}
.contact-head{display:flex;flex-direction:column;gap:18px;min-width:0}
.contact-head .eyebrow{margin:0}
.contact h2{margin:0;font:700 clamp(28px,3.2vw,40px)/1.15 var(--f-display);letter-spacing:-.02em;text-wrap:balance}
:lang(zh) .contact h2,:lang(ja) .contact h2,:lang(ko) .contact h2,:lang(hi) .contact h2{letter-spacing:0}
.contact-head p{margin:0;color:var(--muted);max-width:36em}
.mail{display:flex;flex-direction:column;align-items:flex-start;gap:10px;margin-top:8px}
.mail-label{font-size:14px;color:var(--muted)}
.addr{max-width:100%;font:500 clamp(15px,1.6vw,18px)/1.3 var(--f-mono);color:var(--text);overflow-wrap:anywhere;padding:10px 14px;border-radius:12px;background:var(--surface-2);border:1px dashed var(--border-2)}
.addr.ready{user-select:all}
.mail-actions{display:flex;flex-wrap:wrap;gap:8px}
.status{min-height:1.5em;font-size:14px;color:var(--green-ink)}
.status.err{color:var(--danger)}

.form{display:flex;flex-direction:column;gap:16px;min-width:0}
.row{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:560px){.row{grid-template-columns:1fr 1fr}}
.field{display:flex;flex-direction:column;gap:8px;min-width:0}
.field>span{font-size:14px;font-weight:500;color:var(--text-2)}
.field input,.field textarea{width:100%;font:400 16px/1.5 var(--f-body);color:var(--text);background:var(--surface-2);border:1px solid var(--border);border-radius:14px;padding:12px 14px;transition:border-color .15s,box-shadow .15s}
.field textarea{resize:vertical;min-height:150px}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px color-mix(in srgb,var(--blue) 22%,transparent)}
.field input[aria-invalid="true"],.field textarea[aria-invalid="true"]{border-color:var(--danger)}
.hp{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;opacity:0;pointer-events:none}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px}
.cf-turnstile{flex:1 1 300px;min-height:65px;max-width:420px}
.form-foot .btn{flex:0 0 auto;min-width:140px}
.note{margin:0;font-size:13px;color:var(--muted)}
.form-status{margin:0}

footer{padding-block:40px 56px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px 24px;color:var(--muted);font-size:14px}
footer nav{display:flex;flex-wrap:wrap;gap:8px 18px}
footer a{color:var(--muted);text-decoration:none;font-family:var(--f-mono);font-size:13px}
footer a:hover{color:var(--text)}

@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}