@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;700&display=swap');

/* ---- design tokens ---- */
:root{
  --bg:#ffffff;
  --soft:#f5f7f6;
  --ink:#0f1417;
  --muted:#5d6a72;
  --line:#e4e8e7;
  --brand:#2f7d5f;
  --brand-ink:#1f5c44;
  --brand-soft:#eef5f1;
  --font:'DM Sans','Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --mono:ui-monospace,SFMono-Regular,'SF Mono',Menlo,Consolas,'Noto Sans SC',monospace;
  --radius:16px;
  --shadow:0 1px 2px rgba(15,20,23,.04),0 12px 32px rgba(15,20,23,.06);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3,p,ol,ul{margin:0}
ol,ul{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
a,button{-webkit-tap-highlight-color:transparent}
a:focus-visible,button:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
::selection{background:#cfe8dc}
img{max-width:100%}

.icon{display:inline-block;width:1em;height:1em;flex-shrink:0;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;vertical-align:-.15em}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:50;border-radius:0 0 8px 0}
.skip-link:focus{left:0}

.section-inner{width:min(1120px,100% - 48px);margin-inline:auto}

/* ---- header ---- */
.site-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:20px;width:min(1120px,100% - 48px);margin-inline:auto;height:68px;background:rgba(255,255,255,.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.brand{display:inline-flex;align-items:center;gap:9px;font-size:20px;font-weight:700;letter-spacing:-.5px}
.brand img{display:block;mix-blend-mode:multiply}
.site-nav{display:flex;gap:26px;margin-left:auto;font-size:14px;color:var(--muted)}
.site-nav a:hover{color:var(--ink)}
.header-end{display:flex;align-items:center;gap:14px;margin-left:auto}
.site-nav+.header-end{margin-left:0}
.language-switch{display:inline-flex;padding:3px;gap:2px;border:1px solid var(--line);border-radius:10px;background:var(--soft)}
.language-switch button{border:0;background:transparent;cursor:pointer;font-size:12px;font-weight:600;color:var(--muted);min-width:38px;min-height:30px;padding:6px 8px;border-radius:7px}
.language-switch button[aria-pressed="true"]{background:#fff;color:var(--brand-ink);box-shadow:0 1px 3px rgba(15,20,23,.08)}
.github-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--muted)}
.github-link:hover{color:var(--ink)}
.github-link .icon{width:15px;height:15px}

/* ---- hero ---- */
.hero{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;width:min(1120px,100% - 48px);margin-inline:auto;padding:72px 0 96px}
.pill{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:500;color:var(--brand-ink);background:var(--brand-soft);border:1px solid #dbeae2;border-radius:999px;padding:6px 13px}
.pill .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 3px rgba(47,125,95,.14)}
.hero h1{margin:22px 0 0;font-size:clamp(38px,4.6vw,60px);line-height:1.12;letter-spacing:-1.8px;font-weight:700}
.accent{color:var(--brand)}
.lede{margin-top:18px;max-width:30em;font-size:17px;color:var(--muted)}
.command{display:flex;align-items:center;gap:10px;margin-top:26px;padding:8px 8px 8px 16px;border:1px solid var(--line);border-radius:12px;background:var(--soft);max-width:430px}
.command code{font-family:var(--mono);font-size:13.5px;white-space:nowrap;overflow-x:auto;flex:1;min-width:0}
.command button{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px 12px;font-size:13px;font-weight:600;cursor:pointer;white-space:nowrap}
.command button:hover{border-color:#cfd8d4;background:#fbfcfc}
.command button .icon{width:14px;height:14px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.button{display:inline-flex;align-items:center;gap:8px;border-radius:10px;padding:12px 18px;font-size:14.5px;font-weight:600;border:1px solid transparent;transition:background .16s,border-color .16s,color .16s}
.button .icon{width:15px;height:15px}
.button.primary{background:var(--ink);color:#fff}
.button.primary:hover{background:#26303a}
.button.ghost{border-color:var(--line);color:var(--ink)}
.button.ghost:hover{background:var(--soft)}
.facts{display:flex;align-items:center;gap:8px;margin-top:22px;font-size:13px;color:var(--muted)}
.facts .icon{width:14px;height:14px;color:var(--brand)}
.facts i{font-style:normal;color:#c3cbc8}

/* ---- hero visual ---- */
.hero-visual{position:relative;padding-bottom:64px}
.window{position:relative;margin-right:52px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);overflow:hidden}
.window-bar{display:flex;align-items:center;gap:10px;padding:10px 14px;border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}
.lights{display:flex;gap:5px}
.lights i{width:8px;height:8px;border-radius:50%;background:#e2e6e5}
.window-title{font-weight:600;color:var(--ink)}
.live{display:inline-flex;align-items:center;gap:6px;margin-left:auto}
.live .dot{width:6px;height:6px;border-radius:50%;background:var(--brand)}
.window-body{padding:18px 18px 22px}
.session-title{font-size:13.5px;font-weight:600}
.bubble{margin-top:12px;font-size:13px;color:var(--muted);background:var(--soft);border-radius:10px;padding:9px 12px;max-width:80%}
.bubble.agent{display:flex;align-items:flex-start;gap:8px;background:transparent;padding-left:0;max-width:100%}
.avatar{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:6px;background:var(--brand);color:#fff;font-size:11px;font-weight:700;flex-shrink:0}
.log{margin-top:16px;font-family:var(--mono);font-size:12.5px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;display:grid;gap:6px}
.log b{color:var(--brand)}
.log .ok{color:var(--brand-ink)}
.log .wait{display:flex;align-items:center;gap:4px}
.caret{display:inline-block;width:6px;height:13px;background:var(--brand);animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.phone{position:absolute;right:0;bottom:0;width:214px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:12px 14px 14px}
.phone-bar{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--muted)}
.phone-bar .status{display:inline-flex;gap:4px;margin-left:auto}
.phone-bar .icon{width:12px;height:12px}
.approval{margin-top:12px;border:1px solid var(--line);border-radius:12px;padding:11px 12px;background:var(--soft)}
.approval-label{display:inline-flex;align-items:center;gap:6px;font-size:11.5px;font-weight:600;color:var(--brand-ink)}
.approval-label .icon{width:13px;height:13px}
.approval code{display:block;margin-top:9px;font-family:var(--mono);font-size:12px;color:var(--ink)}
.approval-buttons{display:flex;gap:8px;margin-top:11px}
.approval-buttons span{flex:1;text-align:center;font-size:12px;font-weight:600;padding:7px 0;border-radius:8px;border:1px solid var(--line);background:#fff}
.approval-buttons .yes{display:inline-flex;align-items:center;justify-content:center;gap:4px;background:var(--brand);border-color:var(--brand);color:#fff}
.approval-buttons .icon{width:12px;height:12px}
.visual-note{position:absolute;left:0;bottom:22px;margin:0;font-size:11.5px;color:#9aa5a1}

/* ---- sections ---- */
.section{padding:96px 0}
.section.soft{background:var(--soft);border-block:1px solid var(--line)}
.section-head{max-width:38em;margin-bottom:44px}
.overline{font-size:11.5px;font-weight:700;letter-spacing:1.4px;color:var(--brand)}
.section-head h2{margin-top:12px;font-size:clamp(26px,3vw,38px);line-height:1.2;letter-spacing:-1px;font-weight:700}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:36px;counter-reset:step}
.steps li{position:relative;padding-top:20px;border-top:2px solid var(--line)}
.steps li::before{counter-increment:step;content:counter(step,decimal-leading-zero);position:absolute;top:-2px;left:0;transform:translateY(-120%);font-size:12px;font-weight:700;color:var(--brand);letter-spacing:1px}
.step-icon{display:inline-flex;color:var(--brand)}
.step-icon .icon{width:22px;height:22px}
.steps h3{margin-top:12px;font-size:17px;font-weight:600}
.steps p{margin-top:8px;font-size:14.5px;color:var(--muted)}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;background:#fff;transition:border-color .16s,transform .16s}
.card:hover{border-color:#cfd8d4;transform:translateY(-2px)}
.card-icon{display:inline-flex;color:var(--brand)}
.card-icon .icon{width:21px;height:21px}
.card h3{margin-top:14px;font-size:16.5px;font-weight:600}
.card p{margin-top:8px;font-size:14.5px;color:var(--muted)}
.modes{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.mode{border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;background:#fff;display:flex;flex-direction:column;min-width:0}
.mode h3{margin-top:12px;font-size:16px;font-weight:600}
.mode p{margin-top:7px;font-size:13.5px;color:var(--muted);flex:1}
.mode code{display:block;margin-top:14px;font-family:var(--mono);font-size:11.5px;color:var(--brand-ink);background:var(--brand-soft);border-radius:7px;padding:6px 8px;overflow-x:auto;white-space:nowrap;max-width:100%}
.note{margin-top:26px;font-size:13.5px;color:var(--muted);max-width:64em}
.note .text-link{display:inline-block;margin-top:8px}
.text-link{color:var(--brand-ink);font-weight:600;border-bottom:1px solid rgba(47,125,95,.3)}
.text-link:hover{border-bottom-color:var(--brand)}
.start-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.start-steps li{display:flex;gap:14px;align-items:flex-start}
.start-steps h3{font-size:16px;font-weight:600}
.start-steps p{margin-top:6px;font-size:14.5px;color:var(--muted)}
.closing{padding:88px 0 96px;background:var(--ink);color:#fff}
.closing h2{font-size:clamp(26px,3.2vw,40px);line-height:1.2;letter-spacing:-1px;font-weight:700;max-width:22em}
.closing-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.closing .button.primary{background:#fff;color:var(--ink)}
.closing .button.primary:hover{background:#e9edeb}
.closing .button.ghost{border-color:rgba(255,255,255,.28);color:#fff}
.closing .button.ghost:hover{background:rgba(255,255,255,.08)}

/* ---- footer ---- */
.site-footer{border-top:1px solid var(--line);padding:34px 0}
.footer-inner{display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:space-between}
.footer-brand{display:flex;align-items:center;gap:14px}
.footer-brand .brand{font-size:17px}
.footer-brand p{font-size:13px;color:var(--muted)}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;font-size:13.5px;color:var(--muted)}
.footer-links a:hover{color:var(--ink)}
.toast{position:fixed;left:50%;bottom:26px;transform:translate(-50%,12px);background:var(--ink);color:#fff;font-size:13.5px;padding:11px 18px;border-radius:10px;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:40;max-width:calc(100% - 32px);text-align:center}
.toast.visible{opacity:1;transform:translate(-50%,0)}

/* ---- responsive ---- */
@media(max-width:960px){
  .hero{grid-template-columns:1fr;gap:52px;padding:56px 0 72px}
  .lede{max-width:36em}
  .hero-visual{max-width:560px;margin-inline:auto;width:100%}
  .modes{grid-template-columns:repeat(2,1fr)}
  .cards,.steps,.start-steps{grid-template-columns:1fr}
  .steps{gap:26px}
  .section{padding:72px 0}
  .section-head{margin-bottom:34px}
}
@media(max-width:880px){
  .site-nav{display:none}
}
@media(max-width:700px){
  .modes{grid-template-columns:1fr}
}
@media(max-width:600px){
  .section-inner,.site-header,.hero{width:calc(100% - 32px)}
  .hero{padding-top:44px;padding-bottom:56px}
  .hero h1{letter-spacing:-1.2px}
  .lede{font-size:15.5px}
  .command{max-width:none}
  .command code{font-size:12.5px}
  .hero-visual{padding-bottom:0}
  .window{margin-right:0}
  .phone{position:static;width:100%;max-width:320px;margin:16px auto 0}
  .visual-note{position:static;margin-top:14px;text-align:center}
  .section{padding:56px 0}
  .closing{padding:60px 0 68px}
  .footer-inner{flex-direction:column;align-items:flex-start}
}
@media(max-width:380px){
  .command{flex-direction:column;align-items:stretch;padding:12px}
  .command button{justify-content:center}
  .github-link span{display:none}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}