:root{
  --deep:#0A4A44; --teal:#0F766E; --mint:#2DD4BF; --sand:#F5F2EC; --ink:#0B1513;
  --paper:#FBFAF6; --muted:#5f6b68; --line:#e9e3d6; --dink:#E7ECEA; --dsub:#9CA8A3;
  --dark:#0F1413;
  --settle:cubic-bezier(.22,1,.36,1); --breath:cubic-bezier(.65,0,.35,1); --soft:cubic-bezier(.4,0,.2,1);
  --maxw:1080px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html.i18n-wait body{visibility:hidden}
body{font-family:-apple-system,BlinkMacSystemFont,"Inter","Segoe UI","PingFang SC",sans-serif;
  background:var(--sand);color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,5vw,48px)}
/* nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:14px clamp(16px,5vw,48px);background:rgba(245,242,236,.7);backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(0,0,0,.04);transition:background .3s}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:17px;letter-spacing:-.3px;color:var(--ink);flex:none}
.brand b{color:var(--teal)}
.nav-right{display:flex;align-items:center;gap:10px;min-width:0}
.nav .cta{background:var(--teal);color:#fff;padding:9px 18px;border-radius:999px;font-size:14px;font-weight:600;white-space:nowrap;flex:none;
  transition:transform .18s var(--soft),background .2s}
.nav .cta:hover{transform:translateY(-1px);background:var(--deep)}
.nav .cta:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--teal);outline-offset:3px}
/* language switcher */
.lang{display:inline-flex;align-items:center;gap:2px;background:rgba(255,255,255,.55);border:1px solid var(--line);
  border-radius:999px;padding:3px;flex:none}
.lang-btn{appearance:none;border:none;background:transparent;font:inherit;font-size:13px;font-weight:600;color:var(--muted);
  padding:5px 11px;border-radius:999px;cursor:pointer;white-space:nowrap;line-height:1;
  transition:color .2s var(--soft),background .2s var(--soft)}
.lang-btn:hover{color:var(--ink)}
.lang-btn.on{background:#fff;color:var(--teal);box-shadow:0 1px 2px rgba(0,0,0,.06)}
/* aperture */
.cc .arc,.cc .node{transform-box:view-box;transform-origin:512px 512px}
.cc .node{animation:breath 2.8s var(--breath) infinite}
@keyframes breath{0%,100%{transform:scale(1)}50%{transform:scale(1.06)}}
/* hero */
.hero{position:relative;overflow:hidden;isolation:isolate;min-height:100svh;display:flex;align-items:center;
  padding:112px clamp(20px,5vw,48px) 72px;text-align:center;
  background:radial-gradient(120% 70% at 50% 0%,#fefdfb,var(--sand) 65%)}
.hero::before{content:'';position:absolute;inset:-16%;z-index:0;pointer-events:none;
  background:radial-gradient(38% 38% at 32% 26%,rgba(45,212,191,.10),transparent 68%);
  animation:heroDrift 32s var(--breath) infinite alternate}
@keyframes heroDrift{from{transform:translate(-2.5%,-1.5%)}to{transform:translate(2.5%,2%)}}
.hero-inner{position:relative;z-index:1;max-width:var(--maxw);width:100%;margin:0 auto;
  display:flex;flex-direction:column;align-items:center;gap:clamp(40px,6vw,60px)}
.hero-copy{display:flex;flex-direction:column;align-items:center}
.hero .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 15px;margin-bottom:28px;
  animation:rise .8s var(--settle) both}
.hero .dot{width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 8px var(--mint);flex:none}
.hero h1{font-size:clamp(34px,7vw,62px);font-weight:800;letter-spacing:-1.8px;line-height:1.06;max-width:15ch;
  animation:rise .8s .05s var(--settle) both}
.hero h1 .m{color:var(--teal)}
.hero .sub{font-size:clamp(16px,2.4vw,20px);color:var(--muted);margin-top:22px;max-width:34ch;
  animation:rise .8s .12s var(--settle) both}
.hero .actions{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap;justify-content:center;
  animation:rise .8s .2s var(--settle) both}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:15px 30px;border-radius:999px;white-space:nowrap;
  font-weight:600;font-size:15px;transition:transform .18s var(--soft),box-shadow .25s,background .2s;cursor:pointer;border:none}
.btn-primary{background:var(--teal);color:#fff;box-shadow:0 14px 30px -14px rgba(15,118,110,.55)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 40px -16px rgba(15,118,110,.65)}
.btn-ghost{background:transparent;color:var(--deep);border:1px solid var(--line)}
.btn-ghost:hover{background:#fff;border-color:var(--teal)}
.hero .preview{width:100%;max-width:300px;margin:0 auto;animation:rise 1s .3s var(--settle) both}
@media(min-width:900px){
  .hero{text-align:left}
  .hero-inner{flex-direction:row;justify-content:space-between;align-items:center;gap:clamp(40px,5vw,72px)}
  .hero-copy{align-items:flex-start;flex:1 1 auto;max-width:560px}
  .hero .preview{flex:none;width:clamp(272px,30vw,320px);margin:0}
}
/* phone preview */
.phone{width:100%;aspect-ratio:320/660;background:#0b0f0e;border-radius:40px;padding:10px;
  box-shadow:0 40px 80px -40px rgba(10,74,68,.5),0 0 0 1px rgba(0,0,0,.06);margin:0 auto}
.screen{width:100%;height:100%;border-radius:31px;overflow:hidden;position:relative;
  background:radial-gradient(120% 80% at 50% 25%,#12312d,#0a1614 60%,#070d0c)}
.p-top{position:absolute;top:16px;left:14px;right:14px;display:flex;justify-content:space-between;align-items:center;z-index:3}
.p-lang{display:flex;align-items:center;gap:7px;background:rgba(255,255,255,.1);backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.12);border-radius:999px;padding:6px 11px;font-size:11px;color:var(--dink);font-weight:600;white-space:nowrap}
.p-lang .sw{color:var(--mint)}
.p-status{display:flex;align-items:center;gap:5px;font-size:10px;color:var(--mint);font-weight:600;white-space:nowrap}
.p-status .d{width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 6px var(--mint);flex:none}
.p-node{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:64px;height:64px;z-index:2}
.p-scrim{position:absolute;bottom:0;left:0;right:0;height:52%;background:linear-gradient(0deg,rgba(0,0,0,.7),transparent);z-index:1}
.p-subs{position:absolute;left:16px;right:16px;bottom:74px;z-index:3}
.p-state{display:flex;align-items:center;gap:7px;font-size:9px;letter-spacing:.12em;text-transform:uppercase;color:var(--mint);font-weight:700;margin-bottom:9px}
.p-state .mini{width:16px;height:16px;flex:none}
.p-primary{font-size:16px;font-weight:700;color:var(--dink);line-height:1.3;min-height:22px;
  transition:opacity .35s var(--soft),transform .35s var(--settle)}
.p-secondary{font-size:11px;color:var(--dsub);margin-top:6px;min-height:14px;transition:opacity .35s}
.p-subs.fade .p-primary{opacity:0;transform:translateY(5px)}
.p-subs.fade .p-secondary{opacity:0}
.p-bar{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);display:flex;gap:9px;z-index:3;
  background:rgba(20,26,25,.66);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.08);border-radius:999px;padding:8px 11px}
.p-btn{width:30px;height:30px;border-radius:50%;background:rgba(255,255,255,.12);display:flex;align-items:center;justify-content:center;color:#fff}
.p-btn.mint{color:var(--mint)}
.p-btn.end{background:#FF6B6B}
.p-btn svg{width:15px;height:15px}
/* sections */
section{padding:clamp(70px,11vw,130px) 0}
.section-head{text-align:center;max-width:60ch;margin:0 auto clamp(40px,7vw,64px)}
.eyebrow{font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--teal);font-weight:700;margin-bottom:14px}
h2{font-size:clamp(26px,4.6vw,44px);font-weight:800;letter-spacing:-1px;line-height:1.12}
.section-head p{font-size:clamp(15px,2.2vw,18px);color:var(--muted);margin-top:16px}
/* product experience */
.experience{background:linear-gradient(180deg,transparent,rgba(255,255,255,.55),transparent)}
.exp-grid{display:grid;grid-template-columns:1fr;gap:clamp(30px,5vw,60px);align-items:center;max-width:920px;margin:0 auto}
@media(min-width:820px){.exp-grid{grid-template-columns:340px 1fr}}
.exp-points{display:flex;flex-direction:column;gap:22px}
.exp-point{display:flex;gap:14px;align-items:flex-start}
.exp-point .ic{flex:none;width:34px;height:34px;border-radius:10px;background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--teal);font-size:15px;box-shadow:0 8px 20px -14px rgba(10,74,68,.4)}
.exp-point b{display:block;font-size:16px;color:var(--deep);font-weight:700;margin-bottom:3px}
.exp-point span{font-size:14px;color:var(--muted)}
.exp-phone{width:100%;max-width:300px;margin:0 auto;justify-self:center}
/* how — flow demo (phone + caption only; the public steps are the three cards below) */
.flow{display:flex;flex-direction:column;align-items:center;gap:18px;max-width:300px;margin:0 auto clamp(46px,7vw,70px)}
.flow-stage{display:flex;flex-direction:column;align-items:center;gap:18px;width:100%}
.flow-stage .phone{max-width:290px}
.flow-cap{font-size:14px;color:var(--muted);text-align:center;min-height:20px;transition:opacity .35s var(--soft)}
.flow-cap.fade{opacity:0}
#flowScreen .p-lang,#flowScreen .p-node{transition:box-shadow .7s var(--settle),filter .8s var(--settle)}
#flowScreen .fl-remote{position:absolute;inset:0;border-radius:31px;z-index:0;opacity:0;
  background:radial-gradient(92% 72% at 32% 22%,#1b3f3a,#0c1b18 62%,#070f0d);
  transition:opacity .85s var(--settle)}
#flowScreen.sc-remote .fl-remote{opacity:1}
#flowScreen .fl-pip{position:absolute;right:13px;bottom:62px;width:64px;height:86px;border-radius:13px;z-index:3;
  background:linear-gradient(158deg,#12332f,#0a1a17);border:1px solid rgba(255,255,255,.1);
  opacity:0;transform:translateY(9px) scale(.95);
  transition:opacity .85s var(--settle),transform .85s var(--settle)}
#flowScreen.sc-pip .fl-pip{opacity:1;transform:none}
#flowScreen .fl-invite{position:absolute;top:50%;left:50%;z-index:4;
  transform:translate(-50%,-50%) translateY(9px);opacity:0;
  display:flex;align-items:center;gap:8px;padding:9px 15px;border-radius:999px;
  background:rgba(255,255,255,.1);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.14);
  font-size:12px;font-weight:600;color:var(--dink);white-space:nowrap;
  transition:opacity .85s var(--settle),transform .85s var(--settle)}
#flowScreen.sc-invite .fl-invite{opacity:1;transform:translate(-50%,-50%)}
#flowScreen .fl-invite .fl-share{color:var(--mint)}
#flowScreen.sc-speak .p-lang{box-shadow:0 0 0 1px rgba(45,212,191,.35)}
#flowScreen.sc-breathe .p-node{filter:drop-shadow(0 0 9px rgba(45,212,191,.45))}
#flowScreen .fl-warm{position:absolute;inset:0;border-radius:31px;z-index:2;opacity:0;pointer-events:none;
  background:radial-gradient(62% 52% at 50% 62%,rgba(45,212,191,.17),transparent 72%);
  transition:opacity 1.2s var(--breath)}
#flowScreen.sc-warm .fl-warm{opacity:1}
/* steps */
.steps{display:grid;grid-template-columns:1fr;gap:20px;max-width:900px;margin:0 auto}
@media(min-width:720px){.steps{grid-template-columns:repeat(3,1fr)}}
.step{background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:32px 26px;text-align:center;
  transition:transform .3s var(--settle),box-shadow .3s}
.step:hover{transform:translateY(-3px);box-shadow:0 22px 46px -30px rgba(10,74,68,.4)}
.step .n{width:38px;height:38px;border-radius:50%;background:var(--deep);color:var(--mint);font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;margin:0 auto 18px}
.step b{display:block;font-size:17px;color:var(--deep);font-weight:700;margin-bottom:8px}
.step p{font-size:14px;color:var(--muted)}
/* why */
.why{background:linear-gradient(140deg,#0B1513,#0A4A44);color:var(--dink)}
.why .section-head h2{color:#fff}
.why .section-head p{color:var(--dsub)}
.why .eyebrow{color:var(--mint)}
.why-grid{display:grid;grid-template-columns:1fr;gap:2px;max-width:820px;margin:0 auto;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.08);border-radius:20px;overflow:hidden}
@media(min-width:640px){.why-grid{grid-template-columns:1fr 1fr}}
.why-cell{background:#0d1a18;padding:28px 26px}
.why-cell b{display:block;font-size:16px;color:#fff;font-weight:700;margin-bottom:8px}
.why-cell span{font-size:14px;color:var(--dsub);line-height:1.6}
/* about */
.about{text-align:center}
.about .para{max-width:56ch;margin:0 auto;font-size:clamp(17px,2.6vw,21px);color:#2c3733;line-height:1.7}
/* final cta */
.final{text-align:center;background:radial-gradient(120% 80% at 50% 100%,#fefdfb,var(--sand) 65%)}
.final-mark{width:64px;height:64px;margin:0 auto 26px}
.final h2{max-width:18ch;margin:0 auto}
.final .btn{margin-top:32px}
.final .fine{margin-top:20px;font-size:12px;color:#b3afa2}
/* footer */
footer{border-top:1px solid var(--line);padding:50px 0 40px;text-align:center}
.foot-brand{display:flex;align-items:center;justify-content:center;gap:8px;font-weight:700;color:var(--deep)}
.foot-tag{font-size:14px;color:var(--teal);margin-top:12px;font-style:italic}
.foot-links{display:flex;gap:22px;justify-content:center;margin-top:20px;flex-wrap:wrap}
.foot-links a{color:var(--muted);font-size:13px;white-space:nowrap}
.foot-links a:hover{color:var(--teal)}
.foot-copy{font-size:12px;color:#b3afa2;margin-top:22px}
/* ===== quiet life: aperture slow spin (large apertures only) ===== */
#heroNode .cc .arc,#finalNode .cc .arc,#flowNode .cc .arc{animation:apertureSpin 16s linear infinite}
@keyframes apertureSpin{to{transform:rotate(360deg)}}
/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--settle),transform .8s var(--settle)}
.reveal.in{opacity:1;transform:none}
@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
/* ===== per-language typography ===== */
/* Simplified Chinese */
html[lang="zh-Hans"] body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif}
html[lang="zh-Hans"] h1,html[lang="zh-Hans"] h2{letter-spacing:-.3px;line-height:1.24}
html[lang="zh-Hans"] .hero h1{letter-spacing:0;line-height:1.2;max-width:16ch;font-size:clamp(30px,6.4vw,56px)}
html[lang="zh-Hans"] .hero .sub{max-width:30ch}
html[lang="zh-Hans"] .eyebrow,html[lang="zh-Hans"] .p-state{text-transform:none;letter-spacing:.04em}
html[lang="zh-Hans"] .final h2{max-width:20ch}
/* Thai */
html[lang="th"] body{font-family:"Thonburi","Noto Sans Thai","Leelawadee UI",system-ui,sans-serif;line-height:1.8}
html[lang="th"] h1,html[lang="th"] h2{letter-spacing:0;font-weight:700;line-height:1.28}
html[lang="th"] .hero h1{line-height:1.26;max-width:22ch;font-size:clamp(28px,5.8vw,54px);font-weight:700}
html[lang="th"] .hero .sub{max-width:38ch;line-height:1.8}
html[lang="th"] .eyebrow,html[lang="th"] .p-state{text-transform:none;letter-spacing:0}
html[lang="th"] .about .para{line-height:1.85}
html[lang="th"] .why-cell span,html[lang="th"] .exp-point span,html[lang="th"] .step p{line-height:1.8}
html[lang="th"] .final h2{max-width:24ch}
/* small screens: keep the nav from overflowing */
@media(max-width:460px){
  .nav .cta{display:none}
  .lang-btn{padding:5px 9px;font-size:12px}
}
/* ===== shot-mode: local-preview full-page capture (hero sizes to content) ===== */
html.shot-mode .hero{min-height:auto;padding-top:120px;padding-bottom:64px}
html.shot-mode .reveal{opacity:1!important;transform:none!important}
/* ===== frame-mode: local-preview isolation of the flow demo for screenshots ===== */
html.frame-mode .nav,html.frame-mode .hero,html.frame-mode .experience,
html.frame-mode .why,html.frame-mode .about,html.frame-mode .final,html.frame-mode footer,
html.frame-mode #how .section-head,html.frame-mode #how .steps{display:none!important}
html.frame-mode #how{padding:0;min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(120% 80% at 50% 30%,#fefdfb,var(--sand) 70%)}
html.frame-mode .flow{margin:0;width:300px}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none;transition:none}
  .p-subs,.p-primary,.p-secondary{transition:none!important}
  .flow *{transition:none!important}
  .hero::before{display:none}
}