:root{
  --green:#06C755; --green-d:#05a647; --green-soft:#e7f9ee;
  --ink:#16191d; --ink-2:#4a525c; --ink-3:#7c8590;
  --bg:#ffffff; --bg-2:#f5f7f6; --line:#e3e7e5;
  --chat-bg:#8ca3c4; --bubble:#ffffff; --bubble-me:#a5e88d;
  --radius:16px; --max:1080px;
}
@media (prefers-color-scheme: dark){
  :root{
    --ink:#eef1ef; --ink-2:#b8c0bb; --ink-3:#8a938e;
    --bg:#0f1311; --bg-2:#161b18; --line:#26302b;
    --green-soft:#10301d; --chat-bg:#2b3546; --bubble:#3a4456; --bubble-me:#3f6b33;
  }
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang TC","Noto Sans TC","Microsoft JhengHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
section{padding:88px 0}
h2{font-size:clamp(26px,4vw,34px);line-height:1.3;letter-spacing:.01em}
.kicker{color:var(--green-d);font-weight:700;font-size:14px;letter-spacing:.08em;margin-bottom:10px}
.lead{color:var(--ink-2);font-size:17px;margin-top:12px;max-width:620px}

/* nav */
header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px}
.brand i{width:30px;height:30px;border-radius:8px;background:var(--green);display:grid;place-items:center}
.brand i svg{width:18px}
.nav ul{display:flex;gap:28px;list-style:none;font-size:15px;color:var(--ink-2)}
.nav ul a:hover{color:var(--ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:999px;font-weight:700;font-size:15px;border:0;cursor:pointer;transition:.15s}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-d)}
.btn-ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--line)}
.btn-ghost:hover{box-shadow:inset 0 0 0 1.5px var(--ink-3)}
.nav .btn{height:38px;padding:0 16px;font-size:14px}

/* hero */
.hero{padding:72px 0 88px;background:radial-gradient(1000px 500px at 85% 10%,var(--green-soft),transparent 70%)}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(34px,5.6vw,54px);line-height:1.18;letter-spacing:-.01em}
.hero h1 em{font-style:normal;color:var(--green)}
.hero p{color:var(--ink-2);font-size:18px;margin:20px 0 30px;max-width:520px}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.chips{display:flex;gap:18px;flex-wrap:wrap;margin-top:28px;color:var(--ink-3);font-size:14px}
.chips span::before{content:"✓ ";color:var(--green);font-weight:800}

/* phone demo */
.phone{width:100%;max-width:340px;margin:0 auto;border-radius:34px;padding:10px;background:#1b1f24;box-shadow:0 30px 60px -20px rgba(0,0,0,.35)}
.screen{border-radius:26px;overflow:hidden;background:var(--chat-bg);height:520px;display:flex;flex-direction:column}
.bar{background:color-mix(in srgb,var(--chat-bg) 70%,#000);color:#fff;padding:14px 16px;font-size:14px;font-weight:700;display:flex;justify-content:space-between;align-items:center}
.bar small{font-weight:500;opacity:.8;font-size:12px}
.mode{font-size:11px;padding:3px 9px;border-radius:999px;background:rgba(255,255,255,.18);transition:.3s}
.mode.on{background:var(--green)}
.feed{flex:1;padding:14px 12px;display:flex;flex-direction:column;justify-content:flex-end;gap:10px;overflow:hidden}
.msg{display:flex;gap:8px;align-items:flex-end;max-height:120px;transition:opacity .45s,max-height .45s .2s,margin .45s .2s,transform .45s;animation:in .35s ease}
.msg .av{width:30px;height:30px;border-radius:50%;flex:none;display:grid;place-items:center;font-size:13px;color:#fff;font-weight:700}
.msg .who{font-size:11px;color:rgba(255,255,255,.85);margin-bottom:2px}
.msg .b{background:var(--bubble);color:var(--ink);padding:8px 12px;border-radius:16px;border-top-left-radius:4px;font-size:14px;line-height:1.45;max-width:210px}
.msg.admin .b{box-shadow:0 0 0 2px var(--green)}
.msg.sys{justify-content:center}
.msg.sys .b{background:rgba(0,0,0,.25);color:#fff;font-size:12px;border-radius:999px;padding:5px 12px;max-width:none}
.msg.gone{opacity:0;max-height:0;margin-top:-10px;transform:translateX(-14px)}
@keyframes in{from{opacity:0;transform:translateY(10px)}}

/* features */
.alt{background:var(--bg-2)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px}
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.alt .card{background:var(--bg)}
.card .ic{width:44px;height:44px;border-radius:12px;background:var(--green-soft);display:grid;place-items:center;font-size:22px;margin-bottom:16px}
.card h3{font-size:18px;margin-bottom:6px}
.card p{color:var(--ink-2);font-size:15px}
.soon{display:inline-block;font-size:12px;font-weight:700;color:var(--ink-3);border:1px solid var(--line);border-radius:999px;padding:1px 9px;margin-left:6px;vertical-align:2px}

/* commands */
.cmds{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.cmd-list{display:grid;gap:12px}
.cmd{display:flex;gap:16px;align-items:center;background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:14px 18px}
.cmd code{font-family:ui-monospace,Menlo,Consolas,monospace;font-weight:700;background:var(--green-soft);color:var(--green-d);padding:4px 10px;border-radius:8px;font-size:14px;white-space:nowrap}
.cmd span{color:var(--ink-2);font-size:15px}
.sched{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.sched h3{font-size:18px;margin-bottom:16px}
.tl{position:relative;height:40px;border-radius:10px;background:var(--bg-2);overflow:hidden}
.tl i{position:absolute;top:0;bottom:0;background:var(--green);opacity:.9}
.tl-labels{display:flex;justify-content:space-between;color:var(--ink-3);font-size:12px;margin-top:6px}
.sched p{color:var(--ink-2);font-size:15px;margin-top:16px}

.cmd-group{font-size:13px;font-weight:700;color:var(--ink-3);margin:28px 0 10px;letter-spacing:.04em}
.rules{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:24px}
.rule-box{background:var(--bg);border:1px solid var(--line);border-radius:20px;padding:32px}
.rule-box h3{font-size:18px;margin-bottom:14px}
.rule-box ol{padding-left:20px;display:grid;gap:8px;color:var(--ink-2);font-size:15px}
.rule-box ol b{color:var(--ink)}
/* uses */
.uses{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:40px}
.use{border-radius:var(--radius);padding:22px;background:var(--bg);border:1px solid var(--line)}
.use b{display:block;font-size:16px;margin-bottom:4px}
.use span{color:var(--ink-2);font-size:14px}

/* pricing */
.price-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:44px;align-items:stretch}
.plan{display:flex;flex-direction:column;background:var(--bg);border:2px solid var(--green);border-radius:20px;padding:32px;position:relative}
.plan .tag{position:absolute;top:-13px;left:28px;background:var(--green);color:#fff;font-size:12px;font-weight:700;padding:3px 12px;border-radius:999px}
.plan h3{font-size:22px}
.plan .amt{font-size:30px;font-weight:800;margin:14px 0 4px}
.plan .amt small{font-size:15px;color:var(--ink-3);font-weight:600}
.plan .note{color:var(--ink-3);font-size:14px}
.plan ul{list-style:none;margin:22px 0 26px;flex:1;display:grid;align-content:start;gap:9px;font-size:15px}
.plan li::before{content:"✓";color:var(--green);font-weight:800;margin-right:10px}
.pay{background:var(--bg);border:1px solid var(--line);border-radius:20px;padding:32px;display:flex;flex-direction:column;gap:14px}
.pay h3{font-size:18px}
.usdt{display:flex;align-items:center;gap:12px;font-weight:700;font-size:17px}
.usdt i{width:40px;height:40px;border-radius:50%;background:#26a17b;color:#fff;display:grid;place-items:center;font-style:normal;font-weight:800}
.pay p{color:var(--ink-2);font-size:15px}

.custom{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:center}
.tags{display:flex;flex-wrap:wrap;gap:10px}
.tags span{background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-size:15px}
.tags span.more{border-style:dashed;color:var(--ink-3)}
.plan.alt-plan{border:1px solid var(--line)}
.plan.alt-plan .tag{background:var(--ink)}
/* steps */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;margin-top:44px;counter-reset:s}
.step{position:relative;padding:24px;border-radius:var(--radius);background:var(--bg);border:1px solid var(--line)}
.step::before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--green);color:#fff;font-weight:800;margin-bottom:14px}
.step b{display:block;font-size:17px;margin-bottom:4px}
.step span{color:var(--ink-2);font-size:14px}

/* faq */
.faq{max-width:760px;margin-top:36px}
details{border-bottom:1px solid var(--line)}
summary{list-style:none;cursor:pointer;padding:20px 0;font-weight:700;font-size:17px;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--green);font-size:24px;line-height:1;transition:.2s}
details[open] summary::after{transform:rotate(45deg)}
details p{color:var(--ink-2);padding:0 0 20px;font-size:15px}

/* contact */
.contact{text-align:center;background:var(--ink);color:var(--bg);border-radius:28px;padding:64px 24px;margin:0 20px}
.contact h2{color:var(--bg)}
.contact p{opacity:.75;margin:12px auto 28px;max-width:480px}
.contact .pending{display:inline-block;padding:12px 22px;border-radius:999px;border:1.5px dashed rgba(127,127,127,.6);opacity:.85;font-size:15px}
footer{padding:40px 0 48px;color:var(--ink-3);font-size:13px;text-align:center}
footer p+p{margin-top:6px}

@media (max-width:900px){
  .hero .wrap,.cmds,.price-wrap,.custom,.rules{grid-template-columns:1fr}
  .grid{grid-template-columns:1fr 1fr}
  .uses{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr 1fr}
  .nav ul{display:none}
}
@media (max-width:560px){
  section{padding:64px 0}
  .wrap{padding:0 16px}
  .hero{padding:44px 0 64px}
  .grid,.uses,.steps{grid-template-columns:1fr}
  .screen{height:460px}
  .contact{margin:0 16px;padding:48px 20px}
  .cmd{flex-direction:column;align-items:flex-start;gap:6px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* 語言切換、更新日期、聯絡帳號 */
.nav-right{display:flex;align-items:center;gap:14px}
.langs{display:flex;gap:2px;font-size:13px}
.langs a{padding:4px 8px;border-radius:8px;color:var(--ink-3)}
.langs a:hover{color:var(--ink);background:var(--bg-2)}
.langs a[aria-current]{color:var(--ink);font-weight:700;background:var(--bg-2)}
.contact .handle{margin-top:14px;font-size:14px;opacity:.7}
footer .updated{margin-top:6px}
@media (max-width:560px){.nav .btn{display:none}}
summary h3{font-size:17px;font-weight:700;line-height:1.5}
h3.cmd-group{font-weight:700}
ol.steps{list-style:none}
@media (max-width:1180px){.nav ul{display:none}}
.nav{gap:12px}
.brand{min-width:0}
.brand i{flex:none}
.brand span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.langs a{white-space:nowrap}
@media (max-width:560px){.brand{font-size:15px}.langs a{padding:4px 5px}}

/* 教學文章 */
.guide-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;margin-top:28px}
.guide-card{display:block;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:.15s}
.alt .guide-card{background:var(--bg)}
.guide-card:hover{border-color:var(--green);transform:translateY(-2px)}
.guide-card h3{font-size:17px;line-height:1.45;margin-bottom:8px}
.guide-card p{color:var(--ink-2);font-size:14px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.article-wrap{max-width:780px;padding-top:28px;padding-bottom:72px}
.article-wrap > h1{font-size:clamp(28px,4.4vw,40px);line-height:1.3;margin-top:10px}
.article-wrap > .lead{margin-top:10px}
.crumbs{font-size:13px;color:var(--ink-3);display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.crumbs a:hover{color:var(--ink)}
.prose{margin-top:10px}
.prose h1{font-size:clamp(26px,4.2vw,36px);line-height:1.35}
.prose .meta{color:var(--ink-3);font-size:13px;margin:10px 0 24px}
.prose h2{font-size:clamp(20px,3vw,24px);margin:40px 0 12px;line-height:1.4}
.prose p,.prose li{font-size:16.5px;color:var(--ink);line-height:1.85}
.prose p{margin:12px 0}
.prose ul,.prose ol{padding-left:1.4em;margin:12px 0;display:grid;gap:6px}
.prose a{color:var(--green-d);text-decoration:underline;text-underline-offset:3px}
.prose .answer{background:var(--green-soft);border-left:4px solid var(--green);padding:16px 18px;border-radius:0 12px 12px 0;margin:0 0 8px}
.prose .faq{max-width:none;margin-top:4px}
.cta-box{margin:48px 0;padding:28px;border-radius:20px;background:var(--bg-2);border:1px solid var(--line)}
.cta-box h2{font-size:22px}
.cta-box p{color:var(--ink-2);margin:8px 0 18px}
.article-wrap > h2{font-size:22px;margin-top:8px}