:root{
  --bg:#f3f6f8;--surface:#fff;--surface-2:#f4f7f9;--ink:#0f2233;--ink-2:#4b5f70;--ink-3:#7a8c9b;--line:#dde5eb;--line-2:#c5d1da;
  --accent:#087e8b;--accent-2:#06646e;--accent-soft:#e1f2f3;--accent-ink:#fff;--glow:#7ef0d8;
  --warn:#8a5200;--warn-soft:#fdf1dc;--warn-line:#f0cf95;--danger:#b8372b;--danger-soft:#fcebe8;--danger-line:#efc2bb;
  --hero-1:#14506a;--hero-2:#0f2a3d;--hero-3:#0a1a27;--code-bg:#0d1b26;--code-ink:#d9ecf2;
  --shadow:0 1px 2px #0f22330a,0 16px 40px -24px #0f223352;--radius:18px;--max:1160px;
  font:16px/1.75 -apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang TC","Noto Sans TC","Microsoft JhengHei","Segoe UI",system-ui,sans-serif;
  color:var(--ink);background:var(--bg);-webkit-text-size-adjust:100%;scroll-padding-top:84px;color-scheme:light dark
}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){
  --bg:#0a131b;--surface:#101c26;--surface-2:#162532;--ink:#e5eef4;--ink-2:#a2b4c2;--ink-3:#6f8597;--line:#1f303d;--line-2:#2b4050;
  --accent:#2ec5cf;--accent-2:#5fd6de;--accent-soft:#0f3940;--accent-ink:#04252a;
  --warn:#f2ad4b;--warn-soft:#2e2310;--warn-line:#5a4318;--danger:#ff7a6b;--danger-soft:#33161290;--danger-line:#5e2a24;
  --hero-1:#155a72;--hero-2:#0f2d40;--hero-3:#08141d;--code-bg:#071119;--shadow:0 1px 2px #0006,0 16px 40px -24px #000d}}
:root[data-theme=dark]{
  --bg:#0a131b;--surface:#101c26;--surface-2:#162532;--ink:#e5eef4;--ink-2:#a2b4c2;--ink-3:#6f8597;--line:#1f303d;--line-2:#2b4050;
  --accent:#2ec5cf;--accent-2:#5fd6de;--accent-soft:#0f3940;--accent-ink:#04252a;
  --warn:#f2ad4b;--warn-soft:#2e2310;--warn-line:#5a4318;--danger:#ff7a6b;--danger-soft:#33161290;--danger-line:#5e2a24;
  --hero-1:#155a72;--hero-2:#0f2d40;--hero-3:#08141d;--code-bg:#071119;--shadow:0 1px 2px #0006,0 16px 40px -24px #000d}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg)}
img{max-width:100%;height:auto;display:block}a{color:var(--accent-2);text-underline-offset:3px}
svg.i{width:22px;height:22px;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
code,kbd,pre{font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace}
:not(pre)>code{font-size:.88em;padding:.12em .42em;border-radius:6px;background:var(--surface-2);border:1px solid var(--line);overflow-wrap:anywhere}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:8px;background:var(--surface);padding:8px 14px;border-radius:10px;z-index:99}.skip:focus{left:12px}

/* Nav */
.nav{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 80%,transparent);backdrop-filter:saturate(1.6) blur(14px);-webkit-backdrop-filter:saturate(1.6) blur(14px);border-bottom:1px solid color-mix(in srgb,var(--line) 70%,transparent)}
.nav .wrap{display:flex;align-items:center;gap:18px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);text-decoration:none;white-space:nowrap}
.brand small{display:block;font-weight:500;font-size:11.5px;color:var(--ink-3);letter-spacing:.04em;line-height:1.2}
.logo{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(145deg,var(--hero-1),var(--hero-3));color:var(--glow);flex:none}
.logo svg{width:20px;height:20px}
.links{display:flex;gap:4px;margin-left:auto}
.links a{padding:8px 12px;border-radius:10px;color:var(--ink-2);text-decoration:none;font-size:14.5px}.links a:hover{background:var(--surface);color:var(--ink)}
.nav-end{display:flex;align-items:center;gap:8px}
.lang{display:inline-flex;padding:3px;border-radius:11px;border:1px solid var(--line);background:var(--surface)}
.lang a{padding:4px 10px;border-radius:8px;font-size:13px;font-weight:600;color:var(--ink-2);text-decoration:none}.lang a[aria-current=true]{background:var(--accent-soft);color:var(--accent-2)}
.icon-link{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;border:1px solid var(--line);background:var(--surface);color:var(--ink)}
.menu{display:none;position:relative}.menu summary{list-style:none;cursor:pointer}.menu summary::-webkit-details-marker{display:none}
.menu .panel{position:absolute;right:0;top:46px;min-width:200px;padding:8px;border-radius:14px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);display:grid}
.menu .panel a{padding:10px 12px;border-radius:9px;color:var(--ink);text-decoration:none}.menu .panel a:hover{background:var(--surface-2)}

/* Hero */
.hero{position:relative;overflow:hidden;color:#e8f5f7;background:radial-gradient(120% 120% at 0% 0%,var(--hero-1),var(--hero-2) 46%,var(--hero-3))}
.hero:before{content:"";position:absolute;inset:0;background:radial-gradient(600px 400px at 85% 30%,#2ec5cf38,transparent 70%),radial-gradient(500px 300px at 10% 100%,#7ef0d81a,transparent 70%);pointer-events:none}
.hero .wrap{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:48px;align-items:center;padding-top:76px;padding-bottom:88px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:5px 12px 5px 8px;border-radius:99px;background:#ffffff14;border:1px solid #ffffff22;font-size:13px;color:#cfe7ec;text-decoration:none}
.eyebrow b{display:inline-flex;align-items:center;gap:6px;padding:1px 9px;border-radius:99px;background:var(--glow);color:#06302f;font-size:12px}
.hero h1{font-size:clamp(32px,3.9vw,52px);line-height:1.14;word-break:keep-all;letter-spacing:-.035em;margin:20px 0 18px;font-weight:750}
.hero h1 .nw{white-space:nowrap}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,#7ef0d8,#2ec5cf);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:18px;color:#b9d3da;max-width:34em;margin:0 0 28px}
.cta{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:50px;padding:0 22px;border-radius:14px;font-weight:700;font-size:15.5px;text-decoration:none;border:1px solid transparent;cursor:pointer;transition:transform .15s,filter .15s}
.btn:hover{filter:brightness(1.07)}.btn:active{transform:scale(.98)}
.btn.primary{background:var(--glow);color:#06302f}.btn.glass{background:#ffffff12;border-color:#ffffff2e;color:#fff}
.btn.solid{background:var(--accent);color:var(--accent-ink)}.btn.outline{background:var(--surface);border-color:var(--line);color:var(--ink)}
.trust{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:26px;font-size:13.5px;color:#9dc0c9}
.trust span{display:inline-flex;align-items:center;gap:7px}.trust svg{width:17px;height:17px;color:var(--glow)}
.shots{position:relative;min-height:470px}
.browser{position:absolute;left:0;top:10px;width:112%;max-width:720px;border-radius:14px;overflow:hidden;background:#0b1620;box-shadow:0 40px 80px -30px #000c,0 0 0 1px #ffffff1c;transform:perspective(1600px) rotateY(-9deg) rotateX(3deg);transform-origin:left center}
.browser .bar{display:flex;align-items:center;gap:6px;height:30px;padding:0 12px;background:#132330}.browser .bar i{width:10px;height:10px;border-radius:50%;background:#ffffff26}
.browser .bar span{margin-left:12px;font:11.5px ui-monospace,monospace;color:#7fa1ab;background:#0b1620;padding:2px 10px;border-radius:6px}
.phone{position:absolute;right:-56px;bottom:-34px;width:214px;border-radius:38px;padding:9px;background:#0b141c;box-shadow:0 40px 70px -24px #000d,0 0 0 1px #ffffff26,inset 0 0 0 2px #ffffff14}
.phone img{border-radius:30px}
.caption{position:absolute;left:0;bottom:-58px;font-size:12px;color:#7fa1ab}

/* Sections */
section.block{padding:88px 0}section.block.alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.kicker{font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--accent-2);text-transform:uppercase}
h2.title{font-size:clamp(28px,3.6vw,40px);line-height:1.2;letter-spacing:-.03em;margin:8px 0 14px}
p.sub{color:var(--ink-2);font-size:17px;max-width:44em;margin:0 0 40px}
.features{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.feature{padding:24px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}
.block.alt .feature{background:var(--bg)}
.feature .fi{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent-2);margin-bottom:16px}
.feature h3{margin:0 0 6px;font-size:17.5px}.feature p{margin:0;color:var(--ink-2);font-size:15px}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center}
.flow{list-style:none;padding:0;margin:0;display:grid;gap:14px;counter-reset:f}
.flow li{position:relative;padding:18px 20px 18px 70px;border-radius:16px;background:var(--surface);border:1px solid var(--line)}
.block.alt .flow li{background:var(--bg)}
.flow li:before{counter-increment:f;content:counter(f);position:absolute;left:18px;top:18px;width:36px;height:36px;border-radius:12px;display:grid;place-items:center;background:var(--accent);color:var(--accent-ink);font-weight:800}
.flow b{display:block;font-size:16.5px}.flow span{color:var(--ink-2);font-size:15px}
.duo{display:flex;justify-content:center;gap:22px}
.duo .phone{position:relative;left:auto;bottom:auto;width:250px}.duo .phone:nth-child(2){margin-top:46px}

/* Callouts */
.callout{display:flex;gap:14px;align-items:flex-start;padding:18px 20px;border-radius:16px;border:1px solid var(--line);background:var(--surface-2);margin:18px 0}
.callout svg{margin-top:2px;color:var(--accent)}.callout p{margin:0}.callout ul{margin:6px 0 0;padding-left:20px}.callout b{color:var(--ink)}
.callout.warn{background:var(--warn-soft);border-color:var(--warn-line);color:var(--warn)}.callout.warn svg{color:var(--warn)}.callout.warn b{color:inherit}
.callout.danger{background:var(--danger-soft);border-color:var(--danger-line)}.callout.danger svg{color:var(--danger)}.callout.danger .ct{color:var(--danger);font-weight:800;font-size:17px;display:block;margin-bottom:4px}

/* Manual */
.manual{display:grid;grid-template-columns:230px minmax(0,1fr);gap:48px;align-items:start}
.toc{position:sticky;top:96px;display:grid;gap:2px;font-size:14px}
.toc b{font-size:12px;letter-spacing:.1em;color:var(--ink-3);margin:0 0 8px 12px}
.toc a{display:block;padding:8px 12px;border-radius:10px;color:var(--ink-2);text-decoration:none;border-left:2px solid transparent}
.toc a:hover{background:var(--surface);color:var(--ink)}.toc a.active{color:var(--accent-2);background:var(--accent-soft);font-weight:650}
.chapter{padding:30px;border-radius:22px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);margin-bottom:24px}
.chapter-head{display:flex;align-items:center;gap:14px;margin-bottom:6px}
.chapter-no{flex:none;display:grid;place-items:center;width:52px;height:52px;border-radius:16px;background:linear-gradient(145deg,var(--hero-1),var(--hero-3));color:var(--glow);font-weight:800;font-size:13px;line-height:1.05;text-align:center}
.chapter-no b{display:block;font-size:20px}
.chapter h3{margin:0;font-size:23px;letter-spacing:-.02em}.chapter .intro{color:var(--ink-2);margin:8px 0 18px}
.chapter h4{font-size:16.5px;margin:26px 0 8px}
.steps{list-style:none;padding:0;margin:0;counter-reset:s}
.steps>li{position:relative;padding:0 0 22px 46px}
.steps>li:before{counter-increment:s;content:counter(s);position:absolute;left:0;top:1px;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:14px;background:var(--accent-soft);color:var(--accent-2)}
.steps>li:after{content:"";position:absolute;left:14px;top:36px;bottom:6px;width:2px;background:var(--line)}.steps>li:last-child:after{display:none}
.steps>li>b{display:block;font-size:16px;margin-bottom:2px}.steps>li p{margin:4px 0;color:var(--ink-2)}
.methods{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:6px 0 8px}
.method{position:relative;display:flex;flex-direction:column;padding:20px;border-radius:16px;border:1px solid var(--line);background:var(--surface-2)}
.method.rec{border-color:color-mix(in srgb,var(--accent) 45%,var(--line));background:linear-gradient(160deg,var(--accent-soft),var(--surface-2) 70%)}
.method .badge{align-self:flex-start;font-size:12px;font-weight:700;padding:2px 10px;border-radius:99px;background:var(--surface);border:1px solid var(--line);color:var(--ink-2);margin-bottom:10px}
.method.rec .badge{background:var(--accent);border-color:transparent;color:var(--accent-ink)}
.method h4{margin:0 0 2px;font-size:17px}.method p{margin:2px 0 0;color:var(--ink-2);font-size:14.5px}
.method dl{margin:10px 0 14px;display:grid;gap:6px;font-size:14.5px}.method dt{font-weight:650;color:var(--ink)}.method dd{margin:0;color:var(--ink-2)}
.method a.more{margin-top:auto}
.method-title{display:flex;align-items:center;gap:10px;margin:28px 0 10px}.method-title span{font-size:12px;font-weight:800;letter-spacing:.06em;padding:3px 10px;border-radius:8px;background:var(--accent);color:var(--accent-ink)}.method-title h4{margin:0;font-size:18px}
.checklist{list-style:none;padding:0;margin:8px 0 0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.checklist li{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;border-radius:14px;background:var(--surface-2);border:1px solid var(--line);font-size:15px}
.checklist svg{color:var(--accent);width:20px;height:20px;margin-top:3px}
.code{position:relative;margin:10px 0 6px}
.code pre{margin:0;padding:16px 18px;padding-right:86px;border-radius:14px;background:var(--code-bg);color:var(--code-ink);font-size:13.5px;line-height:1.7;overflow-x:auto;white-space:pre}
.code .copy{position:absolute;top:10px;right:10px;padding:5px 11px;border-radius:9px;border:1px solid #ffffff26;background:#ffffff14;color:#cfe7ec;font:600 12.5px/1.4 inherit;cursor:pointer}
.code .copy.done{background:var(--glow);color:#06302f;border-color:transparent}
.table{width:100%;table-layout:fixed;overflow-wrap:anywhere;border-collapse:collapse;font-size:15px;margin:10px 0}
.table th,.table td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--line);vertical-align:top}.table th{font-size:13px;color:var(--ink-3);font-weight:650}
.more{display:inline-flex;align-items:center;gap:6px;font-weight:650;font-size:14.5px;margin-top:6px}
.more svg{width:16px;height:16px}

/* FAQ & download */
.faq{display:grid;gap:12px;max-width:860px}
.faq details{border-radius:16px;background:var(--surface);border:1px solid var(--line)}
.block.alt .faq details{background:var(--bg)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 20px;font-weight:650;font-size:16px}
.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";font-size:22px;font-weight:400;color:var(--ink-3);transition:transform .2s}
.faq details[open] summary:after{transform:rotate(45deg)}.faq .a{padding:0 20px 18px;color:var(--ink-2)}.faq .a p{margin:0 0 8px}
.downloads{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.dl{display:flex;flex-direction:column;padding:24px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}
.dl.main{background:linear-gradient(160deg,var(--hero-1),var(--hero-3));color:#e8f5f7;border-color:transparent}
.dl h3{margin:0 0 4px;font-size:18px}.dl p{color:var(--ink-2);font-size:14.5px;margin:4px 0 18px;flex:1}.dl.main p{color:#b9d3da}
.dl .ver{font:600 26px/1.3 "SF Mono",ui-monospace,monospace;color:var(--glow);margin:6px 0}
.dl .btn{align-self:flex-start}
footer.site{padding:44px 0 56px;color:var(--ink-3);font-size:13.5px;border-top:1px solid var(--line)}
footer.site .wrap{display:grid;grid-template-columns:1.4fr 1fr;gap:28px}footer.site p{margin:0 0 8px}
footer.site nav{display:flex;flex-wrap:wrap;gap:6px 18px;justify-content:flex-end;align-content:flex-start}footer.site nav a{color:var(--ink-2)}

@media (max-width:980px){
  .links{display:none}.menu{display:block}
  .hero .wrap{grid-template-columns:minmax(0,1fr);gap:36px;padding-top:52px;padding-bottom:64px}
  .shots{min-height:420px}.browser{position:relative;right:auto;top:auto;width:100%;transform:none}.phone{left:auto;right:12px;bottom:-40px;width:170px;border-radius:30px;padding:7px}.phone img{border-radius:24px}.caption{bottom:-70px;right:auto;left:0}
  .features,.downloads{grid-template-columns:repeat(2,minmax(0,1fr))}.split{grid-template-columns:minmax(0,1fr);gap:36px}
  .manual{grid-template-columns:minmax(0,1fr)}.toc{display:none}
}
@media (max-width:620px){
  .wrap{padding:0 16px}.nav .wrap{gap:10px}.brand small{display:none}
  section.block{padding:64px 0}.features,.downloads,.checklist,.methods{grid-template-columns:minmax(0,1fr)}
  .chapter{padding:22px 18px;border-radius:18px}.chapter h3{font-size:20px}.steps>li{padding-left:42px}
  .shots{min-height:300px}.phone{width:130px;bottom:-30px}.duo .phone{width:46%}.duo{gap:12px}
  .code pre{font-size:12.5px;padding-right:18px;padding-top:44px}
  .hero p.lead{font-size:16.5px}.table{font-size:14px}footer.site .wrap{grid-template-columns:1fr}footer.site nav{justify-content:flex-start}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}