*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 16px/1.65 var(--font-sans);overflow-x:hidden;-webkit-font-smoothing:antialiased;transition:background-color .28s ease,color .28s ease}
img,svg{max-width:100%}
a{color:inherit}
.wrap{width:100%;max-width:1160px;margin:0 auto;padding:0 max(20px,env(safe-area-inset-left)) 0 max(20px,env(safe-area-inset-right))}
.narrow{max-width:780px}.center{text-align:center}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.progress{position:fixed;inset:0 0 auto 0;height:3px;background:linear-gradient(90deg,var(--brand),#34d399);transform-origin:0 50%;transform:scaleX(0);z-index:60}

/* --- Sticky Glass Header --- */
.top{position:sticky;top:0;z-index:50;padding-top:env(safe-area-inset-top);background:color-mix(in srgb,var(--bg) 72%,transparent);backdrop-filter:saturate(1.6) blur(16px);-webkit-backdrop-filter:saturate(1.6) blur(16px);border-bottom:1px solid transparent;transition:background .22s,box-shadow .22s,border-color .22s}
.top.scrolled{background:var(--glass);border-bottom-color:var(--glass-edge);box-shadow:0 4px 24px -8px rgba(0,0,0,.06)}
.top-in{display:flex;align-items:center;gap:14px;min-height:66px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:19px;text-decoration:none;letter-spacing:-.02em;min-height:44px}
.brand b{color:var(--brand-hi);font-weight:800}
.logo{display:block;width:32px;height:32px;border-radius:9px;box-shadow:0 2px 10px -2px rgba(22,163,74,.5)}
.nav{display:none;gap:2px;margin-left:10px;padding:4px;border-radius:var(--r-pill);background:color-mix(in srgb,var(--card-2) 65%,transparent);border:1px solid var(--line)}
.nav a{display:inline-flex;align-items:center;min-height:36px;padding:0 13px;border-radius:var(--r-pill);text-decoration:none;color:var(--muted);font-size:13.5px;font-weight:600;white-space:nowrap;transition:background .18s,color .18s,box-shadow .18s}
.nav a:hover{background:var(--card);color:var(--ink)}
.top-act{margin-left:auto;display:flex;align-items:center;gap:8px}
.seg{display:inline-flex;padding:3px;border-radius:var(--r-pill);background:var(--card-2);border:1px solid var(--line)}
.seg button,.seg a{display:inline-flex;align-items:center;justify-content:center;border:0;background:transparent;font:600 12.5px/1 var(--font-sans);padding:0 11px;min-height:34px;min-width:38px;border-radius:var(--r-pill);color:var(--muted);text-decoration:none;cursor:pointer;transition:all .15s}
.seg button[aria-pressed="true"],.seg a[aria-current="true"]{background:var(--card);color:var(--ink);box-shadow:var(--neu-sm)}
.theme-btn{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:var(--r-pill);border:1px solid var(--line);background:var(--card-2);color:var(--muted);cursor:pointer;transition:all .18s}
.theme-btn:hover{color:var(--ink);background:var(--card);border-color:var(--line-strong);transform:translateY(-1px)}
.theme-btn svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
@media(min-width:900px){.nav{display:flex}}

/* --- Buttons --- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:var(--r-ctl);font:600 14px/1 var(--font-sans);text-decoration:none;cursor:pointer;min-height:44px;padding:0 18px;position:relative;overflow:hidden;transition:transform .18s cubic-bezier(.2,.7,.2,1),background .18s,box-shadow .18s,border-color .18s}
.btn:active{transform:scale(.98)}
.btn-primary{background:linear-gradient(180deg,var(--brand) 0%,var(--brand-hi) 100%);color:var(--on-brand);box-shadow:0 1px 2px rgba(0,0,0,.12),0 8px 20px -6px rgba(22,163,74,.45),inset 0 1px 0 rgba(255,255,255,.28)}
.btn-primary:hover{box-shadow:0 4px 12px rgba(0,0,0,.14),0 14px 28px -6px rgba(22,163,74,.6),inset 0 1px 0 rgba(255,255,255,.38);transform:translateY(-1.5px)}
.btn-soft{background:var(--card);color:var(--ink);border:1px solid var(--line-strong);box-shadow:var(--neu-sm)}
.btn-soft:hover{border-color:var(--brand);color:var(--brand-hi);transform:translateY(-1.5px);box-shadow:var(--shadow-lg)}
.btn-sm{min-height:38px;padding:0 14px;font-size:13px;border-radius:var(--r-pill)}
.btn-lg{min-height:52px;padding:0 26px;font-size:15px;border-radius:14px}
.btn:focus-visible,.seg button:focus-visible,.seg a:focus-visible,.nav a:focus-visible,.brand:focus-visible,.theme-btn:focus-visible{outline:3px solid color-mix(in srgb,var(--brand) 55%,white);outline-offset:2px}

/* --- Typography --- */
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 14px;padding:5px 12px;border-radius:var(--r-pill);background:var(--brand-soft);border:1px solid color-mix(in srgb,var(--brand) 24%,transparent);font:700 12px/1 var(--font-sans);letter-spacing:.04em;text-transform:uppercase;color:var(--brand-hi)}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px var(--brand)}
h1{margin:0 0 18px;font-size:clamp(32px,5.2vw,56px);line-height:1.10;font-weight:850;letter-spacing:-.03em}
h2{margin:0 0 22px;font-size:clamp(26px,3.8vw,40px);line-height:1.16;font-weight:800;letter-spacing:-.025em}
h3{margin:0 0 8px;font-size:18.5px;line-height:1.32;font-weight:750;letter-spacing:-.01em}
.lead{font-size:clamp(16px,2vw,18.5px);line-height:1.68;color:var(--muted);max-width:640px}
.center .lead{margin-left:auto;margin-right:auto}
.note{font-size:13px;color:var(--faint)}

/* --- Architectural Hero Stage --- */
.hero{position:relative;overflow:hidden;padding:clamp(44px,7vw,92px) 0 clamp(44px,7vw,88px);border-bottom:1px solid var(--line);background:
  radial-gradient(900px 480px at 18% -8%,var(--brand-glow),transparent 68%),
  radial-gradient(760px 420px at 88% 12%,color-mix(in srgb,var(--sky) 11%,transparent),transparent 70%)}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(var(--grid-dot) 1px,transparent 1px);background-size:24px 24px;mask-image:radial-gradient(ellipse 80% 75% at 50% 35%,#000 35%,transparent 100%);-webkit-mask-image:radial-gradient(ellipse 80% 75% at 50% 35%,#000 35%,transparent 100%);pointer-events:none}
.hero-in{position:relative;z-index:1}
.hero-grid{display:grid;gap:40px;grid-template-columns:1fr;align-items:center}
@media(min-width:980px){.hero-grid{grid-template-columns:1.05fr 0.95fr;gap:44px}}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 26px}
.chips{display:flex;flex-wrap:wrap;gap:8px 20px;margin:0;padding:0;list-style:none}
.chips li{position:relative;padding-left:20px;font-size:13.5px;font-weight:600;color:var(--muted)}
.chips li::before{content:"";position:absolute;left:2px;top:.42em;width:6px;height:10px;border:solid var(--brand-hi);border-width:0 2px 2px 0;transform:rotate(45deg)}

/* --- Live Interactive Studio Window in Hero --- */
.hero-stage{background:var(--card);border-radius:20px;border:1px solid var(--line-strong);box-shadow:var(--shadow-stage);overflow:hidden;position:relative}
.stage-bar{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 16px;background:var(--card-2);border-bottom:1px solid var(--line)}
.stage-dots{display:flex;gap:6px}
.stage-dots i{width:10px;height:10px;border-radius:50%;display:block}
.stage-dots i:nth-child(1){background:#f87171}
.stage-dots i:nth-child(2){background:#fbbf24}
.stage-dots i:nth-child(3){background:#34d399}
.stage-url{font:500 11.5px/1 var(--font-mono);color:var(--faint);padding:5px 12px;border-radius:99px;background:var(--card);border:1px solid var(--line)}
.stage-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;padding:8px 10px;background:var(--bg-elev);border-bottom:1px solid var(--line)}
.stage-tab{border:0;background:transparent;padding:8px 6px;border-radius:10px;font:650 12px/1.2 var(--font-sans);color:var(--muted);cursor:pointer;transition:all .16s}
.stage-tab:hover{color:var(--ink)}
.stage-tab.active{background:var(--card);color:var(--brand-hi);box-shadow:var(--neu-sm)}
.stage-body{padding:18px;min-height:310px;display:flex;flex-direction:column;justify-content:space-between}
.stage-pane{display:none;animation:fadeIn .24s ease}
.stage-pane.active{display:block}
@keyframes fadeIn{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}

/* Mockup inside Hero Stage */
.mock-split{display:grid;gap:10px}
.mock-before{padding:10px 12px;border-radius:12px;background:var(--card-2);border:1px dashed var(--line-strong);font-size:12.5px;color:var(--muted)}
.mock-before strong{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--faint);margin-bottom:4px}
.mock-after{padding:14px;border-radius:14px;background:linear-gradient(165deg,color-mix(in srgb,var(--brand-soft) 45%,var(--card)),var(--card));border:1px solid color-mix(in srgb,var(--brand) 32%,transparent);box-shadow:var(--neu-sm)}
.mock-badge{display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:99px;background:var(--brand-soft);color:var(--brand-hi);font:700 11px/1.2 var(--font-sans);margin-bottom:8px}
.mock-site-h{font-size:15.5px;font-weight:800;color:var(--ink);margin:0 0 5px}
.mock-site-p{font-size:12.5px;color:var(--muted);margin:0 0 10px;line-height:1.5}
.mock-pills{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.mock-pills span{padding:4px 9px;border-radius:8px;background:var(--card);border:1px solid var(--line);font-size:11.5px;font-weight:600;color:var(--ink)}
.mock-cta-bar{display:flex;gap:6px;padding-top:8px;border-top:1px solid var(--line)}
.mock-cta-bar span{font-size:11px;font-weight:700;padding:5px 10px;border-radius:7px;background:var(--brand);color:var(--on-brand)}
.mock-cta-bar em{font-style:normal;font-size:11px;font-weight:600;padding:5px 10px;border-radius:7px;background:var(--card-2);color:var(--muted)}
.stage-foot{display:flex;align-items:center;justify-content:space-between;padding-top:12px;margin-top:12px;border-top:1px solid var(--line);font-size:11.5px;color:var(--faint)}

/* --- Sections & Spotlight Bento Cards --- */
.sec{padding:clamp(56px,8vw,104px) 0;position:relative}
.sec.alt{background:var(--bg-elev);border-block:1px solid var(--line)}
.sec-head{display:flex;flex-direction:column;align-items:flex-start;margin-bottom:28px}
.grid3{display:grid;gap:18px;grid-template-columns:1fr}
@media(min-width:760px){.grid3{grid-template-columns:repeat(3,1fr)}}
.grid4{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:560px){.grid4{grid-template-columns:repeat(2,1fr)}}
@media(min-width:960px){.grid4{grid-template-columns:repeat(4,1fr)}}

.card,.panel{background:var(--card);border-radius:var(--r-panel);box-shadow:var(--neu);padding:24px;border:1px solid var(--line);position:relative;overflow:hidden;transition:transform .24s cubic-bezier(.2,.7,.2,1),box-shadow .24s,border-color .24s}
.card::before,.panel::before{content:"";position:absolute;inset:0;background:radial-gradient(460px circle at var(--mx,50%) var(--my,0%),color-mix(in srgb,var(--brand) 10%,transparent),transparent 60%);opacity:0;transition:opacity .3s;pointer-events:none}
.card:hover::before,.panel:hover::before{opacity:1}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:color-mix(in srgb,var(--brand) 38%,var(--line))}
.card p{margin:0 0 12px;color:var(--muted);font-size:15px;position:relative;z-index:1}
.card h3{position:relative;z-index:1}

/* Micro-UI Header inside Bento Cards */
.bento-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;position:relative;z-index:1}
.bento-num{font:700 12px/1 var(--font-mono);color:var(--brand-hi);padding:5px 9px;border-radius:8px;background:var(--brand-soft)}
.bento-ic{display:grid;place-items:center;width:40px;height:40px;border-radius:11px;background:var(--card-2);border:1px solid var(--line);color:var(--brand-hi)}
.bento-ic svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.bento-mini{margin:0 0 16px;padding:11px 13px;border-radius:12px;background:var(--bg-elev);border:1px solid var(--line);font:500 12px/1.5 var(--font-mono);color:var(--muted);position:relative;z-index:1}
.bento-mini b{color:var(--brand-hi);font-weight:700}

.meta{font-weight:600;color:var(--brand-hi)!important;font-size:13px!important;margin:0!important}
.chip-ic{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--brand-soft);margin-bottom:14px}
.chip-ic svg{width:22px;height:22px;fill:none;stroke:var(--brand-hi);stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}

.steps{list-style:none;margin:0 0 24px;padding:0;display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:760px){.steps{grid-template-columns:repeat(3,1fr)}}
.steps li{padding:24px;border-radius:var(--r-panel);background:var(--card);border:1px solid var(--line);box-shadow:var(--neu-sm);position:relative;overflow:hidden}
.steps p{margin:0;color:var(--muted);font-size:15px}
.num{display:inline-flex;align-items:center;justify-content:center;padding:4px 10px;border-radius:8px;background:var(--brand-soft);font:800 14px/1.2 var(--font-mono);color:var(--brand-hi);margin-bottom:12px}
.principles ul{margin:0;padding-left:20px;color:var(--muted)}
.principles li{margin:6px 0}

/* --- Before / After Interactive Comparison --- */
.ba-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:16px}
.ba-switch{display:inline-flex;padding:4px;border-radius:12px;background:var(--card-2);border:1px solid var(--line);gap:4px}
.ba-btn{border:0;background:transparent;padding:8px 14px;border-radius:9px;font:650 13px/1.2 var(--font-sans);color:var(--muted);cursor:pointer;transition:all .16s}
.ba-btn.active{background:var(--card);color:var(--brand-hi);box-shadow:var(--neu-sm)}
.ba-track{display:none}
.ba-track.active{display:block;animation:fadeIn .25s ease}
.ba{display:grid;gap:18px;grid-template-columns:1fr;margin:8px 0 16px}
@media(min-width:760px){.ba{grid-template-columns:1fr 1fr}}
.tag{display:inline-flex;align-items:center;gap:6px;margin-bottom:14px;padding:5px 12px;border-radius:var(--r-pill);font-size:12px;font-weight:700}
.tag-neutral{background:var(--card-2);color:var(--muted);border:1px solid var(--line)}
.tag-brand{background:var(--brand-soft);color:var(--brand-hi);border:1px solid color-mix(in srgb,var(--brand) 28%,transparent)}
.panel-brand{border-color:color-mix(in srgb,var(--brand) 38%,transparent);background:linear-gradient(165deg,color-mix(in srgb,var(--brand-soft) 28%,var(--card)),var(--card))}
.code{margin:0;white-space:pre-wrap;word-break:break-word;font:400 13.5px/1.75 var(--font-mono);color:var(--muted);padding:14px;border-radius:12px;background:var(--bg-elev);border:1px solid var(--line)}
.after h3{font-size:20px;margin:0 0 8px}.after p{margin:0 0 10px;font-size:15px}.after ul{margin:0 0 12px;padding-left:20px;font-size:14.5px;color:var(--muted)}
.after li{margin:4px 0}

/* --- Showcase Product Cards on Homepage --- */
.prod-card{display:flex;flex-direction:column;padding:0;overflow:hidden}
.prod-frame{position:relative;background:var(--card-2);border-bottom:1px solid var(--line);overflow:hidden;aspect-ratio:16/10}
.prod-frame img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .45s cubic-bezier(.2,.7,.2,1)}
.prod-card:hover .prod-frame img{transform:scale(1.03)}
.prod-body{padding:24px;display:flex;flex-direction:column;flex:1}
.prod-pills{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto;padding-top:12px}
.prod-pills span{font:600 11.5px/1 var(--font-mono);padding:5px 9px;border-radius:7px;background:var(--bg-elev);border:1px solid var(--line);color:var(--muted)}

.foot{padding:36px 0 calc(32px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:var(--bg-elev);color:var(--faint);font-size:13px}
.foot-in{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
#mail{max-width:100%;overflow-wrap:anywhere;margin:8px 0 12px}

.reveal{opacity:0;transform:translateY(10px);transition:opacity .32s ease,transform .32s ease}
.reveal.in{opacity:1;transform:none}
.no-js .reveal{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
}
.card.sm{padding:20px}.card.sm h3{font-size:16.5px}.card.sm p{font-size:14px;margin:0}
.sec .lead{margin-bottom:28px}

/* --- Video Showcase --- */
h1 .w{display:inline-block;opacity:0;transform:translateY(.5em);animation:wup .6s cubic-bezier(.2,.7,.2,1) forwards}
@keyframes wup{to{opacity:1;transform:none}}
.showcase{display:grid;gap:16px;grid-template-columns:1fr 1fr;margin:8px 0 14px}
.vid{margin:0;border-radius:var(--r-panel);overflow:hidden;background:#0d1210;border:1px solid var(--line-strong);box-shadow:var(--shadow-stage);position:relative}
.vid video{display:block;width:100%;height:100%;object-fit:cover;background:#0d1210}
.vid.wide{grid-column:1/-1;aspect-ratio:16/9}
.vid.tall{aspect-ratio:9/16;max-height:520px}
.vid figcaption{position:absolute;left:12px;bottom:12px;padding:6px 13px;border-radius:var(--r-pill);background:rgba(12,18,15,.72);backdrop-filter:blur(10px);color:#fff;font-size:12px;font-weight:600;border:1px solid rgba(255,255,255,.12)}
@media(min-width:860px){.showcase{grid-template-columns:2fr 1fr 1fr}.vid.wide:first-child{grid-column:1;grid-row:1/3;aspect-ratio:auto}.vid.wide:last-child{grid-column:2/-1;aspect-ratio:16/9}.vid.tall{aspect-ratio:9/16}}
@media(prefers-reduced-motion:reduce){h1 .w{opacity:1;transform:none;animation:none}}
.showcase.one{grid-template-columns:1fr}.showcase.one .vid.wide{grid-column:1;grid-row:auto;aspect-ratio:16/9}
.showcase.duo{grid-template-columns:1fr;justify-items:center}
.showcase.duo .vid.wide{grid-column:1;grid-row:auto;aspect-ratio:16/9;width:100%}
.showcase.duo .vid.tall{width:min(100%,300px);aspect-ratio:9/16;max-height:none}
@media(min-width:860px){.showcase.duo{grid-template-columns:2.4fr 1fr;align-items:center}.showcase.duo .vid.tall{width:100%}}

/* --- Inquiry Form --- */
.inq{display:grid;gap:14px;text-align:left;margin:24px 0 8px}
.inq-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.inq label{display:grid;gap:6px;font-size:13px;font-weight:600;color:var(--muted)}
.inq input,.inq select,.inq textarea{font:inherit;font-size:14px;font-weight:400;color:var(--ink);background:var(--card);border:1px solid var(--line-strong);border-radius:12px;padding:12px 14px;min-height:46px;width:100%;box-sizing:border-box;transition:border-color .16s,box-shadow .16s}
.inq input:focus,.inq select:focus,.inq textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.inq .hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.inq .btn{justify-self:center}
.inq .note{text-align:center;margin:0}
#inqmsg.ok{color:var(--brand-hi)}#inqmsg.err{color:#ef4444}
@media(max-width:600px){.inq-row{grid-template-columns:1fr}}

.nav .nav-contact{display:none}
@media(max-width:899px){.nav .nav-contact{display:flex;justify-content:center}}

/* ── 2026-10-18 繁中排版修正（依 網站製作學問.md）：中文不用負字距、行高放寬、標題只在詞組處斷行 ── */
html[lang="zh-Hant"] body{font-size:17px;line-height:1.8;letter-spacing:.02em}
html[lang="zh-Hant"] h1{line-height:1.3;letter-spacing:.02em}
html[lang="zh-Hant"] h2{line-height:1.38;letter-spacing:.02em}
html[lang="zh-Hant"] h3{line-height:1.5;letter-spacing:.02em}
html[lang="zh-Hant"] .lead{line-height:1.85}
html[lang="zh-Hant"] .stmt-text{line-height:1.45;letter-spacing:.03em}
html[lang="zh-Hant"] .eyebrow{text-transform:none;letter-spacing:.08em}
html[lang="zh-Hant"] .card p,html[lang="zh-Hant"] .panel li,html[lang="zh-Hant"] .detail li{line-height:1.8}
h1,h2,h3,.stmt-text{text-wrap:balance}
p,li,dd{text-wrap:pretty}
.ph{display:inline-block}
.nav a{font-size:14px}
.note{font-size:14px;line-height:1.7}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid color-mix(in srgb,var(--brand) 55%,white);outline-offset:2px}
[id]{scroll-margin-top:84px}