:root{
  --bg:#ffffff; --bg-soft:#fafafc; --bg-muted:#f1f2f6;
  --text:#15181f; --muted:#5b6473; --soft:#9aa2b1;
  --border:#ececf1; --border-strong:#dcdee6;
  --accent:#7c3aed; --accent-2:#06b6d4; --pink:#ec4899; --orange:#f59e0b; --green:#16a34a; --red:#dc2626;
  --grad:linear-gradient(90deg,#06b6d4 0%,#7c3aed 45%,#ec4899 75%,#f59e0b 100%);
  --radius:14px;
  --shadow-sm:0 1px 2px rgba(20,25,40,.04),0 2px 6px rgba(20,25,40,.05);
  --shadow:0 16px 40px rgba(30,30,60,.10);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC","PingFang TC","Microsoft JhengHei",Roboto,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
  --maxw:1080px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{padding:84px 0}
.kicker{font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin:0 0 12px;display:inline-block}
h2{font-size:33px;letter-spacing:-.025em;margin:0 0 10px;line-height:1.2}
.section-sub{color:var(--muted);margin:0 0 40px;font-size:16px;max-width:620px}
.kbd,code{font-family:var(--mono);font-size:.9em;background:var(--bg-muted);padding:2px 6px;border-radius:5px;border:1px solid var(--border)}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.nav .wrap{display:flex;align-items:center;gap:18px;height:62px}
.nav .brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--text)}
.nav .brand img{width:30px;height:30px;border-radius:7px}
.nav .links{margin-left:auto;display:flex;gap:20px;align-items:center;flex-wrap:wrap}
.nav .links a{color:var(--muted);font-size:14px;font-weight:500}
.nav .links a:hover{color:var(--accent);text-decoration:none}
.nav .links .gh{background:var(--text);color:#fff;padding:7px 15px;border-radius:8px}
.nav .links .gh:hover{background:#000;text-decoration:none}
@media(max-width:780px){.nav .links a:not(.gh){display:none}}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:10px;font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:.16s}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(124,58,237,.22)}
.btn-primary:hover{filter:brightness(1.05);box-shadow:0 12px 28px rgba(124,58,237,.30);text-decoration:none;transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--text);border-color:var(--border-strong)}
.btn-ghost:hover{background:var(--bg-soft);text-decoration:none;border-color:var(--soft)}
.tag-opt{display:inline-block;font-size:12px;font-weight:600;color:var(--accent);background:rgba(124,58,237,.10);border:1px solid rgba(124,58,237,.28);border-radius:999px;padding:1px 9px;vertical-align:middle;margin-left:8px}
.note-opt{font-size:13px;color:var(--muted);margin-top:8px}

/* hero — 白底 + 頂部彩雲光暈 */
.hero{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--border)}
.hero::before{content:"";position:absolute;top:-220px;left:50%;transform:translateX(-50%);width:1200px;height:700px;z-index:0;pointer-events:none;
  background:
    radial-gradient(at 28% 32%, hsla(189,90%,72%,.40), transparent 50%),
    radial-gradient(at 72% 24%, hsla(280,85%,76%,.38), transparent 50%),
    radial-gradient(at 56% 60%, hsla(340,90%,76%,.30), transparent 52%),
    radial-gradient(at 46% 8%,  hsla(43,95%,72%,.28), transparent 46%);
  filter:blur(14px)}
.hero .wrap{position:relative;z-index:1;padding-top:72px;padding-bottom:72px;text-align:center}
.hero .eyebrows{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-bottom:22px}
.hero .eyebrow{display:inline-block;font-size:13px;font-weight:600;background:rgba(255,255,255,.7);border:1px solid var(--border);padding:5px 14px;border-radius:999px;backdrop-filter:blur(6px)}
.hero .eyebrow:nth-child(1){color:#0891b2;border-color:#a5e8f2}
.hero .eyebrow:nth-child(2){color:#7c3aed;border-color:#d6c4fb}
.hero .eyebrow:nth-child(3){color:#db2777;border-color:#f8c2dc}
.hero h1{font-size:52px;line-height:1.1;letter-spacing:-.035em;margin:0 0 18px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.hero h1 .grad{background:none;-webkit-text-fill-color:transparent;color:transparent}
.hero p.lead{font-size:19px;color:var(--muted);max-width:660px;margin:0 auto 14px}
.hero .lead-note{display:inline-flex;align-items:flex-start;gap:9px;text-align:left;max-width:600px;margin:0 auto 30px;padding:11px 16px;font-size:13px;line-height:1.65;color:var(--muted);background:rgba(255,255,255,.55);border:1px solid var(--border);border-radius:12px;backdrop-filter:blur(6px)}
.hero .lead-note .ln-ico{width:17px;height:17px;flex-shrink:0;margin-top:1px;color:var(--accent-2)}
.hero .lead-note strong{color:var(--text);font-weight:600}
.hero .cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.badges{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:30px}
.badges img{height:22px}
@media(max-width:600px){.hero h1{font-size:36px}}

/* screenshot frame */
.shot{margin:0}
.shot .frame{border:1px solid var(--border);border-radius:16px;overflow:hidden;background:var(--bg-soft);box-shadow:0 18px 45px rgba(10,10,30,.30);position:relative;min-height:200px;display:flex;align-items:center;justify-content:center}
.shot .frame img{width:100%;display:block}
.shot .frame.empty{border:1px solid var(--border);
  background:
    radial-gradient(at 28% 22%, hsla(280,80%,82%,.16), transparent 60%),
    radial-gradient(at 80% 82%, hsla(189,80%,80%,.16), transparent 60%),
    #fbfbfe}
.shot .frame.empty::after{content:"畫面即將補上";color:var(--soft);font-size:13px;font-weight:500;letter-spacing:.02em;padding-top:62px;text-align:center;
  background:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20width='46'%20height='46'%20viewBox='0%200%2024%2024'%20fill='none'%20stroke='%23bcc3d0'%20stroke-width='1.3'%20stroke-linecap='round'%20stroke-linejoin='round'%3E%3Crect%20x='3'%20y='3'%20width='18'%20height='18'%20rx='2.5'/%3E%3Ccircle%20cx='8.5'%20cy='8.5'%20r='1.6'/%3E%3Cpath%20d='m21%2015-5-5L5%2021'/%3E%3C/svg%3E") no-repeat top center}
.shot figcaption{display:inline-block;color:var(--text);font-size:13px;font-weight:500;margin:14px auto 0;padding:6px 14px;text-align:center;background:rgba(255,255,255,.7);border:1px solid var(--border);border-radius:999px;backdrop-filter:blur(6px)}
.hero-shot{text-align:center}
.hero-shot{position:relative;max-width:880px;margin:48px auto 0}
.hero-shot::before{content:"";position:absolute;inset:-24px;border-radius:28px;background:var(--grad);filter:blur(44px);opacity:.16;z-index:-1}
.hero-shot .frame{box-shadow:0 34px 80px rgba(10,10,30,.34)}

/* two columns */
.cols2{display:grid;grid-template-columns:1fr 1fr;gap:22px}
@media(max-width:760px){.cols2{grid-template-columns:1fr}}
.panel{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm)}
.panel.warn{background:#fffaf3;border-color:#f6e4c8}
.panel.good{background:#f4fcf6;border-color:#cdeed6}
.panel h3{margin:0 0 14px;font-size:17px;display:flex;align-items:center;gap:8px}
.panel.warn h3::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--orange)}
.panel.good h3::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--green)}
.panel ul{margin:0;padding-left:20px;color:var(--muted)}
.panel li{margin:8px 0}
#appendix .panel{display:flex;flex-direction:column}
#appendix .panel>p:last-child{margin-top:auto;margin-bottom:0}

/* feature grid */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:880px){.grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.grid{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--border-strong)}
.card .ico{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(135deg,#f3e8ff 0%,#e0f7fa 100%);color:var(--accent);margin-bottom:16px}
.card .ico svg{width:23px;height:23px}
.card h3{margin:0 0 7px;font-size:16.5px}
.card p{margin:0;color:var(--muted);font-size:14px}

.alt{background:var(--bg-soft);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}

/* security list */
.sec{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media(max-width:680px){.sec{grid-template-columns:1fr}}
.sec .row{display:flex;gap:14px;align-items:center;min-height:84px;background:#fff;border:1px solid var(--border);border-radius:12px;padding:14px 16px;box-shadow:var(--shadow-sm)}
.sec .tag{flex-shrink:0;display:inline-flex;align-items:center;font-family:var(--mono);font-size:14px;font-weight:700;color:#fff;background:var(--grad);border-radius:8px;padding:7px 11px}
.sec .row div b{display:block;font-size:14px;margin-bottom:2px}
.sec .row div span{color:var(--muted);font-size:13px}

/* screenshots showcase — 一列一張圖 + 側邊說明，左右交錯 */
.showcase{display:flex;flex-direction:column;gap:64px}
.sc-row{display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:center}
.sc-row:nth-child(even){grid-template-columns:1fr 1.3fr}
.sc-row:nth-child(even) .sc-shot{order:2}
.sc-shot{margin:0}
.sc-text .num{display:inline-block;font-family:var(--mono);font-size:13px;font-weight:700;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:.06em;margin-bottom:8px}
.sc-text h3{margin:0 0 10px;font-size:21px;letter-spacing:-.02em}
.sc-text p{margin:0;color:var(--muted);font-size:15px;line-height:1.75}
@media(max-width:760px){
  .sc-row,.sc-row:nth-child(even){grid-template-columns:1fr;gap:18px}
  .sc-row:nth-child(even) .sc-shot{order:0}
}

/* install */
pre{background:#0f172a;color:#e2e8f0;border-radius:12px;padding:18px 20px;overflow:auto;font-family:var(--mono);font-size:13px;line-height:1.7;box-shadow:var(--shadow-sm)}
pre .c{color:#7c8aa5}
h3{font-size:18px;letter-spacing:-.01em}
.note{background:#f6f1fe;border:1px solid #ddd0fb;border-radius:12px;padding:14px 18px;color:#5b21b6;font-size:14px;margin-top:16px}

/* table */
table{width:100%;border-collapse:collapse;font-size:14px;background:#fff;border:1px solid var(--border-strong);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
th,td{text-align:left;padding:11px 16px;border-bottom:1px solid var(--border)}
td:not(:last-child),th:not(:last-child){border-right:1px solid var(--border)}
tbody tr:last-child td{border-bottom:0}
th{background:var(--bg-muted);font-size:12px;color:var(--text);font-weight:700;text-transform:uppercase;letter-spacing:.04em;border-bottom:2px solid var(--border-strong)}

/* 比較表：兩模式欄等寬、首欄(項目)底色區隔 */
.compare-table{table-layout:fixed}
.compare-table th:first-child,.compare-table td:first-child{width:18%;background:var(--bg-muted);font-weight:600;color:var(--text)}
.compare-table th:nth-child(2),.compare-table td:nth-child(2),
.compare-table th:nth-child(3),.compare-table td:nth-child(3){width:41%}
tr:last-child td{border-bottom:0}

/* disclaimer */
.disclaimer{color:var(--muted);font-size:14px;background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius);padding:24px}

/* footer */
footer{border-top:1px solid var(--border);background:#fff;padding:40px 0;color:var(--muted);font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;align-items:center}
footer a{color:var(--muted)}

/* lightbox（畫面一覽放大檢視）*/
.lightbox{position:fixed;inset:0;z-index:1000;display:none;align-items:center;justify-content:center;
  padding:32px;background:rgba(15,15,20,.85);backdrop-filter:blur(4px);cursor:zoom-out;
  animation:lb-fade .15s ease}
.lightbox.open{display:flex}
.lightbox img{max-width:min(1180px,95vw);max-height:92vh;width:auto;height:auto;
  border-radius:10px;box-shadow:0 24px 60px rgba(0,0,0,.55);cursor:default}
.lightbox-close{position:fixed;top:18px;right:22px;width:44px;height:44px;border:0;border-radius:50%;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  background:rgba(255,255,255,.14);color:#fff;transition:background .15s}
.lightbox-close:hover{background:rgba(255,255,255,.26)}
.lightbox-close svg{width:22px;height:22px}
@keyframes lb-fade{from{opacity:0}to{opacity:1}}
footer .ftlinks{display:flex;gap:18px;flex-wrap:wrap}