:root{
  --mahogany:#3f0d12;
  --ruby:#a71d31;
  --chiffon:#f1f0cc;
  --fawn:#d5bf86;
  --copper:#8d775f;
  --ink:#2b1113;
  --paper:#fbf8e9;
  --paper-2:#f6f0d8;
  --line:rgba(63,13,18,.16);
  --shadow:0 18px 50px rgba(63,13,18,.13);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC","PingFang TC","Microsoft JhengHei",sans-serif;
  color:var(--ink);
  background:
    radial-gradient(circle at 12% 8%,rgba(213,191,134,.33),transparent 28rem),
    linear-gradient(180deg,var(--chiffon),var(--paper));
  min-height:100%;
}
button,input,textarea{font:inherit}
button{cursor:pointer}
code,pre{font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace}
.site-header{
  max-width:1180px;
  margin:auto;
  padding:28px 28px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.brand-wrap{display:flex;align-items:center;gap:14px}
.brand-mark{
  width:48px;height:48px;border-radius:15px;
  display:grid;place-items:center;
  background:var(--mahogany);color:var(--chiffon);
  font-weight:900;font-size:22px;
  box-shadow:0 8px 24px rgba(63,13,18,.24);
}
h1,h2,h3,p{margin-top:0}
h1{margin:2px 0 0;font-size:19px;letter-spacing:-.02em}
.eyebrow{
  color:var(--ruby);
  font-weight:900;
  letter-spacing:.15em;
  font-size:11px;
  margin-bottom:7px;
}
.api-pill{
  display:flex;align-items:center;gap:9px;
  border:1px solid var(--line);
  background:rgba(241,240,204,.74);
  padding:10px 14px;border-radius:999px;
}
.pulse-dot,.chat-status-dot{
  width:9px;height:9px;border-radius:50%;
  background:#4f7d45;display:inline-block;
  box-shadow:0 0 0 5px rgba(79,125,69,.12);
}
main{max-width:1180px;margin:auto;padding:0 28px 100px}
.hero{
  padding:90px 0 72px;
  display:grid;grid-template-columns:minmax(0,1.45fr) minmax(280px,.55fr);
  gap:54px;align-items:center;
}
.hero h2{
  font-size:clamp(40px,6vw,74px);
  line-height:.98;letter-spacing:-.055em;
  margin-bottom:28px;color:var(--mahogany);
}
.hero-text{font-size:18px;line-height:1.75;max-width:700px;color:#5f4442}
.hero-flow,.success-flow{
  display:flex;gap:10px;align-items:center;flex-wrap:wrap;
  margin-top:30px;font-size:13px;font-weight:800;
}
.hero-flow span,.success-flow span{
  padding:9px 11px;border-radius:9px;background:rgba(213,191,134,.45);
  border:1px solid rgba(141,119,95,.28);
}
.hero-flow b,.success-flow b{color:var(--ruby)}
.hero-card{
  background:var(--mahogany);color:var(--chiffon);
  border-radius:28px;padding:28px;
  box-shadow:var(--shadow);
  transform:rotate(1deg);
}
.hero-card code{font-size:14px;word-break:break-all}
.card-label{font-size:11px;font-weight:900;letter-spacing:.16em;color:var(--fawn)}
.mini-divider{height:1px;background:rgba(241,240,204,.18);margin:22px 0}
.muted{color:#755f5e;line-height:1.6}
.hero-card .muted{color:var(--fawn);font-size:12px;margin-bottom:7px}
.small-note{font-size:12px;line-height:1.65;color:#e2d4ab;margin:22px 0 0}
.os-section,.troubleshoot{padding:34px 0 52px}
.section-head,.guide-title-row{
  display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:25px;
}
.section-head h2,.guide-title-row h2{font-size:30px;letter-spacing:-.035em;margin-bottom:0}
.os-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.os-card{
  border:1px solid var(--line);background:rgba(251,248,233,.75);
  padding:20px;border-radius:20px;display:flex;align-items:center;gap:15px;
  color:var(--ink);text-align:left;transition:.2s ease;
}
.os-card:hover{transform:translateY(-2px);border-color:rgba(167,29,49,.42)}
.os-card[aria-selected="true"]{
  background:var(--ruby);color:var(--chiffon);border-color:var(--ruby);
  box-shadow:0 13px 32px rgba(167,29,49,.2);
}
.os-icon{
  width:46px;height:46px;border-radius:14px;
  background:rgba(213,191,134,.42);
  display:grid;place-items:center;font-size:23px;font-weight:900;
}
.os-card[aria-selected="true"] .os-icon{background:rgba(241,240,204,.15)}
.os-card span:last-child{display:flex;flex-direction:column;gap:4px}
.os-card strong{font-size:17px}
.os-card small{opacity:.68}
.guide{
  margin-top:16px;
  border-top:1px solid var(--line);
  padding-top:62px;
}
.system-badge{
  background:var(--mahogany);color:var(--chiffon);
  padding:9px 13px;border-radius:999px;font-size:12px;font-weight:900;
}
.step-card{
  display:grid;grid-template-columns:70px minmax(0,1fr);
  gap:18px;padding:30px 0;border-top:1px solid var(--line);
}
.step-card:first-of-type{border-top:0}
.step-index{
  width:52px;height:52px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--fawn);color:var(--mahogany);
  font-weight:900;
}
.step-content h3{font-size:22px;margin:4px 0 11px}
.step-content p{line-height:1.7;color:#604a48}
.codebox{
  position:relative;background:var(--mahogany);border-radius:16px;
  overflow:auto;margin:16px 0;color:var(--chiffon);
  border:1px solid rgba(255,255,255,.05);
}
.codebox pre{margin:0;padding:21px 82px 21px 21px;line-height:1.65;font-size:13px;white-space:pre-wrap;word-break:break-word}
.codebox.compact pre{padding-top:17px;padding-bottom:17px}
.copy-btn{
  position:absolute;top:10px;right:10px;
  border:1px solid rgba(241,240,204,.24);
  background:rgba(241,240,204,.10);color:var(--chiffon);
  border-radius:9px;padding:7px 10px;font-size:11px;font-weight:800;
}
.copy-btn:hover{background:rgba(241,240,204,.18)}
.hint{font-size:13px}
.notice{
  margin-top:17px;padding:15px 16px;border-radius:13px;
  background:rgba(213,191,134,.4);border-left:4px solid var(--ruby);
  line-height:1.6;font-size:14px;
}
details{
  border:1px solid var(--line);border-radius:14px;background:rgba(251,248,233,.7);
  padding:14px 16px;margin-top:15px;
}
summary{font-weight:800;cursor:pointer}
details p{margin:12px 0 0}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.faq-grid details{margin:0;min-height:90px}
footer{
  border-top:1px solid var(--line);margin-top:52px;padding-top:24px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:#7c6461;font-size:12px;
}

/* Floating chat */
.chat-launcher{
  position:fixed;right:24px;bottom:24px;z-index:40;
  border:0;border-radius:999px;padding:13px 18px;
  background:var(--ruby);color:var(--chiffon);font-weight:900;
  box-shadow:0 14px 38px rgba(63,13,18,.3);
  display:flex;align-items:center;gap:9px;
}
.chat-launcher-icon{font-size:18px}
.chat-panel{
  position:fixed;right:24px;bottom:82px;z-index:50;
  width:min(390px,calc(100vw - 28px));
  max-height:min(660px,calc(100vh - 118px));
  background:#fffdf1;border:1px solid rgba(63,13,18,.18);
  border-radius:22px;box-shadow:0 24px 70px rgba(63,13,18,.32);
  overflow:hidden;
}
.chat-panel[hidden]{display:none}
.chat-head{
  padding:15px 16px;background:var(--mahogany);color:var(--chiffon);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.chat-head>div:first-child{
  display:grid;grid-template-columns:12px 1fr;column-gap:9px;align-items:center;
}
.chat-head strong{font-size:14px}
.chat-head small{grid-column:2;color:#dccd9d;margin-top:2px;font-size:10px}
.chat-status-dot{width:8px;height:8px;background:var(--fawn);box-shadow:none;grid-row:1/3}
.chat-status-dot.ok{background:#79a66d}
.chat-status-dot.bad{background:#da6571}
.chat-actions{display:flex;gap:6px}
.chat-actions button{
  border:1px solid rgba(241,240,204,.18);background:transparent;color:var(--chiffon);
  width:31px;height:31px;border-radius:9px;
}
.chat-access{
  padding:12px 14px;border-bottom:1px solid var(--line);
  background:rgba(213,191,134,.18);
}
.chat-access label{font-size:11px;font-weight:900}
.chat-access label span{font-weight:500;color:#755f5e}
.access-row{display:flex;gap:7px;margin-top:7px}
.access-row input{
  min-width:0;flex:1;border:1px solid var(--line);border-radius:9px;padding:9px 10px;background:#fffef7;
}
.access-row button{
  border:0;border-radius:9px;padding:0 10px;background:var(--copper);color:white;font-size:11px;font-weight:800;
}
.chat-access p{font-size:10px;line-height:1.45;color:#7c6461;margin:8px 0 0}
.chat-messages{
  height:330px;overflow:auto;padding:15px;
  background:linear-gradient(180deg,#fffdf3,#faf4dc);
}
.message{display:flex;margin-bottom:11px}
.message.user{justify-content:flex-end}
.bubble{
  max-width:84%;padding:10px 12px;border-radius:14px;
  font-size:13px;line-height:1.55;white-space:pre-wrap;word-break:break-word;
  background:white;border:1px solid var(--line);
}
.message.user .bubble{background:var(--ruby);color:var(--chiffon);border-color:var(--ruby)}
.message.error .bubble{background:#fff0ef;color:#8d1a28;border-color:#e2a1a6}
.chat-form{
  display:grid;grid-template-columns:1fr auto;gap:8px;padding:11px;
  border-top:1px solid var(--line);background:#fffdf1;
}
.chat-form textarea{
  resize:none;max-height:120px;min-height:44px;border:1px solid var(--line);
  border-radius:12px;padding:11px;background:white;color:var(--ink);outline:none;
}
.chat-form textarea:focus{border-color:var(--ruby);box-shadow:0 0 0 3px rgba(167,29,49,.08)}
.chat-form button{
  align-self:end;border:0;border-radius:12px;height:44px;padding:0 15px;
  background:var(--ruby);color:var(--chiffon);font-weight:900;
}
.chat-form button:disabled{opacity:.5;cursor:not-allowed}
.chat-foot{text-align:center;font-size:9px;color:#8b7773;padding:0 10px 9px;background:#fffdf1}


.web-portal{
  margin:0 0 34px;
  padding:24px 26px;
  border:1px solid rgba(63,13,18,.16);
  border-radius:24px;
  background:
    linear-gradient(135deg,rgba(213,191,134,.34),rgba(241,240,204,.78));
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:26px;
  align-items:center;
}
.web-portal-copy h2{
  margin:0 0 10px;
  color:var(--mahogany);
  font-size:28px;
  letter-spacing:-.035em;
}
.web-portal-copy p:last-child{
  margin:0;
  color:#654d4b;
  line-height:1.7;
  max-width:720px;
}
.web-portal-link{
  min-width:245px;
  text-decoration:none;
  color:var(--chiffon);
  background:var(--mahogany);
  border-radius:18px;
  padding:17px 18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:22px;
  box-shadow:0 12px 28px rgba(63,13,18,.18);
  transition:transform .18s ease, background .18s ease;
}
.web-portal-link:hover{
  transform:translateY(-2px);
  background:var(--ruby);
}
.web-portal-link span:first-child{
  display:flex;
  flex-direction:column;
  gap:4px;
}
.web-portal-link small{
  color:var(--fawn);
  font-size:10px;
  letter-spacing:.12em;
  font-weight:900;
}
.web-portal-link strong{
  font-size:15px;
}
.portal-arrow{
  font-size:24px;
  line-height:1;
}

@media (max-width:800px){

  .web-portal{grid-template-columns:1fr;padding:21px}
  .web-portal-link{min-width:0;width:100%}

  .site-header{padding:20px 18px 0}
  .api-pill{display:none}
  main{padding:0 18px 100px}
  .hero{grid-template-columns:1fr;padding:65px 0 48px;gap:30px}
  .hero-card{transform:none}
  .os-grid{grid-template-columns:1fr}
  .section-head,.guide-title-row{align-items:flex-start;flex-direction:column}
  .step-card{grid-template-columns:1fr}
  .step-index{width:42px;height:42px}
  .faq-grid{grid-template-columns:1fr}
  .chat-launcher{right:14px;bottom:14px}
  .chat-panel{right:14px;bottom:70px}
}
@media (max-width:460px){
  .hero h2{font-size:42px}
  .hero-flow b,.success-flow b{display:none}
  .step-card{padding:24px 0}
  .codebox pre{padding-right:62px}
}
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important;transition:none!important}
}