/* cascaio.com 設計系統 v1(2026-10-22,改版 A 段):tokens + 共用元件。所有行銷 / 文件頁引用;後台只借 tokens。
   來源:AIShutter 介紹頁的樣式抽出來一般化。版面語言:白底、柔色塊交替、22px 圓角、藥丸鈕、Inter + Noto Sans TC。 */
:root{
  --brand:#2563AD; --brand-light:#4A7BC8; --brand-deep:#1B4A86; --brand-tint:#EAF0FA; --brand-tint-2:#F4F7FC;
  --shutter:#E6322B; --gate:#B5342A; --vault:#1F7A5A;
  --ink:#16242E; --ink-soft:#54636E; --ink-faint:#8A98A2; --line:#E9EFF3; --white:#FFFFFF; --bg-soft:#F5F9FB;
  --mask:#5B3FB0; --mask-bg:#EFE9FB;
  --shadow-sm:0 2px 8px rgba(20,40,55,.05); --shadow-md:0 12px 32px rgba(20,40,55,.08); --shadow-lg:0 24px 60px rgba(20,40,55,.12);
  --radius:22px;
  --font:'Noto Sans TC','Inter',-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang TC","Microsoft JhengHei",sans-serif;
  --mono:"SF Mono","Cascadia Mono",Menlo,Consolas,monospace;
  color-scheme:light;
}
/* 產品頁換色只動這兩行 */
.theme-aishutter{--brand:#2A5CA8;--brand-light:#4A7BC8;--brand-deep:#1E4680}
.theme-gate{--brand:#1B4A86;--brand-light:#3A6AB0;--brand-deep:#12345F}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--white);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:1120px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
h1,h2,h3{line-height:1.2;letter-spacing:-.01em;text-wrap:balance;font-weight:900}
h1{font-size:clamp(2.2rem,5vw,3.6rem)}
h2{font-size:clamp(1.7rem,3.4vw,2.6rem)}
h3{font-size:1.25rem;font-weight:700}
.lead{font-size:1.15rem;color:var(--ink-soft);max-width:34em}
.note{font-size:.9rem;color:var(--ink-faint)}
.mono{font-family:var(--mono)}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--brand);margin-bottom:14px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:999px;font-size:1rem;font-weight:700;text-decoration:none;cursor:pointer;border:none;transition:transform .18s ease,box-shadow .18s ease;white-space:nowrap;font-family:inherit}
.btn.primary{background:var(--brand);color:#fff;box-shadow:0 8px 24px rgba(37,99,173,.28)}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(37,99,173,.32)}
.btn.ghost{background:var(--white);color:var(--brand);border:1.5px solid var(--line)}
.btn.ghost:hover{border-color:var(--brand-light);transform:translateY(-2px)}
.btn.small{padding:10px 18px;font-size:.9rem}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid var(--brand-light);outline-offset:3px}
/* nav(site.js 產生)*/
nav.site{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:21;background:var(--white)}
nav.site .wrap{display:flex;align-items:center;gap:22px;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.1rem;text-decoration:none}
.logo img{width:32px;height:32px}
.logo .mark{width:32px;height:32px;border-radius:10px;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:900;font-size:1.05rem}
.logo small{font-weight:600;color:var(--ink-faint);font-size:.8rem;margin-left:2px}
nav.site .links{display:flex;gap:20px;margin-left:auto;font-weight:600;font-size:.95rem}
nav.site .links a{text-decoration:none;color:var(--ink-soft)}
nav.site .links a:hover,nav.site .links a.on{color:var(--brand)}
nav.site .cta{display:flex;align-items:center;gap:10px}
.langsw{font:inherit;font-weight:700;font-size:.85rem;border:1.5px solid var(--line);background:var(--white);border-radius:999px;padding:6px 12px;cursor:pointer;color:var(--ink-soft)}
.navtoggle{display:none;font:inherit;border:1.5px solid var(--line);background:var(--white);border-radius:999px;padding:6px 12px;cursor:pointer}
@media (max-width:900px){nav.site .links{display:none}nav.site .links.open{display:flex;position:absolute;left:0;right:0;top:68px;background:var(--white);border-bottom:1px solid var(--line);flex-direction:column;gap:0}nav.site .links.open a{padding:14px 20px;border-top:1px solid var(--line)}.navtoggle{display:inline-block}}
/* hero / sections */
.hero{position:relative;padding:72px 0 80px;overflow:hidden;background:linear-gradient(180deg,var(--brand-tint-2) 0%,var(--white) 100%)}
.hero h1{margin-bottom:18px}.hero h1 em{font-style:normal;color:var(--brand)}
.hero .lead{margin-bottom:28px}
.hero .ctas{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.hero .fine{font-size:.85rem;color:var(--ink-faint)}
.hero .wrap.two{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
@media (max-width:900px){.hero .wrap.two{grid-template-columns:1fr}.hero{padding:48px 0 56px}}
section.s{padding:88px 0}
section.soft{background:var(--bg-soft)}
section.tint{background:var(--brand-tint)}
.center{text-align:center}.center .lead{margin:12px auto 0}
.stats{padding:28px 0}.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;box-shadow:var(--shadow-sm)}
.stat b{display:block;font-size:2.1rem;font-weight:900;color:var(--brand);line-height:1.1;font-variant-numeric:tabular-nums}
.stat span{color:var(--ink-soft);font-size:.92rem}
@media (max-width:860px){.stats .wrap{grid-template-columns:repeat(2,1fr)}}
.feat{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:40px 0}
.feat:nth-child(even) .fig{order:-1}
.feat h3{font-size:clamp(1.4rem,2.4vw,1.9rem);margin:8px 0 12px;font-weight:900}
.feat p{color:var(--ink-soft);max-width:30em}
.fig{min-width:0}.fig .box{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-md);padding:22px}
@media (max-width:860px){.feat{grid-template-columns:1fr;gap:22px;padding:28px 0}.feat:nth-child(even) .fig{order:0}}
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:36px}
.three .cell{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);min-width:0}
.three .cell .k{font-family:var(--mono);color:var(--brand);font-weight:700;font-size:.85rem;margin-bottom:8px}
.three .cell h3{margin-bottom:8px}.three .cell p{color:var(--ink-soft);font-size:.95rem}
@media (max-width:860px){.three{grid-template-columns:1fr}}
.two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:36px}
@media (max-width:860px){.two{grid-template-columns:1fr}}
.ent{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:36px}
.ent .cell{background:var(--white);border-radius:var(--radius);padding:24px;border:1px solid var(--line);min-width:0}
.ent .n{font-family:var(--mono);color:var(--brand);font-weight:700;margin-bottom:8px}
.ent h3{margin-bottom:8px}.ent p{color:var(--ink-soft);font-size:.95rem}
@media (max-width:860px){.ent{grid-template-columns:1fr}}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:36px}
.step{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;min-width:0}
.step b{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--brand);color:#fff;font-weight:800;margin-bottom:12px}
.step h3{margin-bottom:6px}.step p{color:var(--ink-soft);font-size:.95rem}
@media (max-width:860px){.steps{grid-template-columns:1fr 1fr}}@media (max-width:520px){.steps{grid-template-columns:1fr}}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:36px}
.plans.four{grid-template-columns:repeat(4,1fr)}
.plan{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;display:flex;flex-direction:column;gap:14px;box-shadow:var(--shadow-sm);min-width:0}
.plan.hi{border-color:var(--brand-light);box-shadow:var(--shadow-md)}
.plan .name{font-weight:900;font-size:1.2rem}.plan .price{font-size:1.9rem;font-weight:900;color:var(--brand)}.plan .price small{font-size:.9rem;color:var(--ink-faint);font-weight:600}
.plan ul{list-style:none;display:flex;flex-direction:column;gap:8px;color:var(--ink-soft);font-size:.95rem}
.plan li::before{content:"✓";color:var(--brand);font-weight:800;margin-right:8px}
.plan .btn{margin-top:auto;justify-content:center}
@media (max-width:1000px){.plans.four{grid-template-columns:1fr 1fr}}@media (max-width:860px){.plans,.plans.four{grid-template-columns:1fr}}
.honest{margin-top:28px;text-align:center;color:var(--ink-faint);font-size:.9rem}
.final{padding:96px 0;background:linear-gradient(135deg,var(--brand-deep),var(--brand));color:#fff;text-align:center}
.final h2{color:#fff}.final p{opacity:.9;margin:12px auto 28px;max-width:32em}
.final .btn.primary{background:#fff;color:var(--brand)}.final .btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.final .ctas{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.copybtn{font:inherit;font-size:.85rem;font-weight:700;border:1.5px solid var(--line);background:var(--white);border-radius:999px;padding:4px 12px;cursor:pointer;color:var(--brand)}
/* 表格 / 文件 */
.tbl{width:100%;border-collapse:collapse;font-size:.95rem;margin:10px 0}
.tbl th{text-align:left;color:var(--ink-faint);font-weight:600;padding:8px 10px;border-bottom:1px solid var(--line)}
.tbl td{padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink)}
.tbl .ok{color:var(--brand);font-weight:700}.tbl .no{color:var(--ink-faint)}
.tblwrap{overflow-x:auto}
.code{font-family:var(--mono);font-size:.9rem;background:#1b2130;color:#e8edf5;border-radius:16px;padding:18px 20px;white-space:pre;overflow-x:auto;line-height:1.55}
.code .c{color:#8a98a2}.code .k{color:#8fd3ff}.code .s{color:#ffd38a}
.doc{max-width:860px;margin:0 auto}
.doc h2{font-size:1.5rem;margin:48px 0 14px;scroll-margin-top:90px}
.doc h3{font-size:1.1rem;margin:22px 0 8px}
.doc p,.doc li{color:var(--ink-soft)}
.doc ul,.doc ol{padding-left:22px;display:flex;flex-direction:column;gap:6px}
.toc{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 8px}.toc a{font-size:.9rem;font-weight:600;text-decoration:none;color:var(--brand);background:var(--brand-tint);border-radius:999px;padding:6px 12px}
details.faq{background:var(--white);border:1px solid var(--line);border-radius:16px;padding:4px 18px;margin:8px 0}
details.faq summary{cursor:pointer;font-weight:700;padding:12px 0;list-style:none}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";float:right;color:var(--brand);font-weight:800}
details.faq[open] summary::after{content:"–"}
details.faq p{color:var(--ink-soft);padding:0 0 14px}
/* footer(site.js 產生)*/
footer.site{background:var(--bg-soft);padding:56px 0 32px;border-top:1px solid var(--line);color:var(--ink-soft);font-size:.92rem}
footer.site .wrap{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
footer.site h4{font-size:.85rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:10px}
footer.site ul{list-style:none;display:flex;flex-direction:column;gap:6px}footer.site a{text-decoration:none}footer.site a:hover{color:var(--brand)}
footer.site .copy{grid-column:1/-1;border-top:1px solid var(--line);padding-top:18px;margin-top:8px;font-size:.85rem;color:var(--ink-faint);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
@media (max-width:860px){footer.site .wrap{grid-template-columns:1fr 1fr}}@media (max-width:520px){footer.site .wrap{grid-template-columns:1fr}}
.reveal{opacity:1}
@media (prefers-reduced-motion:no-preference){.reveal{transition:transform .5s ease,opacity .5s ease}.reveal.pre{opacity:0;transform:translateY(14px)}}