/* 易銅電子名片 — C 3D 旗艦風格 */
.c3{min-height:100vh;color:var(--ink);background:#E9CFA0;overflow-x:clip;-webkit-tap-highlight-color:transparent}
.c3-bg{position:fixed;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(120vmax 90vmax at 50% 22%,#FFF3D8 0%,#F5E0B9 34%,#DDBC88 66%,#A9835A 100%)}
.c3-bg .spot{position:absolute;left:50%;top:-10vh;width:min(110vw,720px);height:90vh;transform:translateX(-50%);
  background:linear-gradient(180deg,rgba(255,252,240,.7),rgba(255,252,240,0) 85%);clip-path:polygon(38% 0,62% 0,100% 100%,0 100%);mix-blend-mode:screen}
.c3-bg .floor{position:absolute;left:-30%;right:-30%;top:58vh;height:60vh;transform:perspective(600px) rotateX(64deg);transform-origin:50% 0;
  background:repeating-linear-gradient(90deg,rgba(255,246,224,.22) 0 1px,transparent 1px 64px),linear-gradient(180deg,rgba(255,246,224,.45),rgba(255,246,224,0) 70%)}
#dust{position:absolute;inset:0;width:100%;height:100%}
.c3-wrap{position:relative;z-index:1;max-width:460px;margin:0 auto;padding:max(18px,env(safe-area-inset-top)) 18px 120px;display:grid;gap:22px}
.c3-top{text-align:center;font-size:13px;letter-spacing:.42em;color:#7A5A3E;padding-left:.42em}
.c3-top span{color:var(--gold-deep)}

/* ---------- 3D card ---------- */
.c3-stage{position:relative;display:grid;justify-items:center;padding:18px 0 6px;perspective:1100px}
.c3-card{--rx:4deg;--ry:0deg;--flip:0deg;position:relative;width:min(84vw,340px);aspect-ratio:340/520;transform-style:preserve-3d;cursor:pointer;outline:none;
  transform:rotateX(4deg)}
.c3-in{position:absolute;inset:0;transform-style:preserve-3d;transition:transform .9s cubic-bezier(.6,-.05,.25,1.15)}
.c3-card.is-back .c3-in{transform:rotateY(180deg)}
.c3-card:focus-visible .face{outline:3px solid var(--gold-deep);outline-offset:4px}
.face{position:absolute;inset:0;border-radius:34px;overflow:hidden;backface-visibility:hidden;-webkit-backface-visibility:hidden;
  background:linear-gradient(160deg,rgba(255,253,248,.97),rgba(255,245,224,.93));border:2px solid rgba(255,240,200,.95);
  box-shadow:0 0 16px rgba(255,226,150,.85),0 0 48px rgba(255,214,120,.5),inset 0 0 26px rgba(255,236,190,.55),0 40px 60px -30px rgba(74,52,38,.55)}
.front{transform:rotateY(0deg) translateZ(1px)}
.back{transform:rotateY(180deg) translateZ(1px)}
.c3-card.is-back .front,.c3-card:not(.is-back) .back{pointer-events:none}
.glare{position:absolute;inset:-20%;border-radius:34px;pointer-events:none;
  background:radial-gradient(40% 32% at 40% 30%,rgba(255,255,255,.38),rgba(255,255,255,0) 70%);transform:translateZ(1px)}
.front{display:flex;flex-direction:column;align-items:center;text-align:center;padding:26px 22px 22px}
.fr-ph{position:relative;width:56%;aspect-ratio:1}
.fr-ph .blob{position:absolute;inset:8% 4% 2%;border-radius:46% 54% 50% 50%/52% 46% 54% 48%;background:radial-gradient(circle at 40% 35%,#FFF1C4,#EFD27A 70%,#E2BC5C);animation:c3blob 8s ease-in-out infinite}
.fr-ph img{position:relative;width:100%;height:100%;object-fit:contain;filter:drop-shadow(0 10px 14px rgba(74,52,38,.25))}
@keyframes c3blob{50%{border-radius:56% 44% 42% 58%/44% 58% 42% 56%;transform:rotate(8deg) scale(1.03)}}
.front h1{margin-top:14px;font-family:var(--font-hero);font-size:clamp(38px,11vw,48px);letter-spacing:.08em;line-height:1;font-weight:700}
.front h1 span{display:block;margin-top:8px;font-size:15px;letter-spacing:.46em;color:var(--muted);font-weight:600;padding-left:.46em}
.fr-chip{margin-top:14px;padding:7px 14px;border-radius:999px;background:var(--gold-soft);font-size:13px;font-weight:700;color:#5A4232}
.fr-sl{margin-top:14px;font-family:var(--font-hero);font-weight:700;font-size:clamp(19px,5.4vw,22px);line-height:1.6;letter-spacing:.04em;color:var(--ink);white-space:nowrap}
.fr-btn{margin-top:auto;width:100%;display:flex;align-items:center;justify-content:center;gap:8px;min-height:50px;border-radius:999px;background:var(--line-green);color:#fff;text-decoration:none;font-family:var(--font-display);font-size:17px;box-shadow:0 14px 24px -14px rgba(6,120,50,.75)}
.fr-btn svg{width:22px;height:22px}
.back{display:flex;flex-direction:column;padding:22px 16px 16px;gap:8px}
.bk-h{text-align:center;font-size:13px;letter-spacing:.45em;color:var(--gold-deep);padding-left:.45em}
.back h2{text-align:center;font-family:var(--font-display);font-weight:400;font-size:21px;margin-bottom:2px}
.bk-list{display:grid;gap:8px}
.sv{display:grid;grid-template-columns:40px 1fr 12px;gap:10px;align-items:center;padding:9px 10px;border-radius:20px;background:#FFFDF8;border:1.5px solid var(--line);text-decoration:none;color:inherit}
.sv i{font-style:normal;width:40px;height:40px;border-radius:14px;background:var(--gold-soft);display:grid;place-items:center;font-size:19px;color:#8A6A24}
.sv b{display:block;font-family:var(--font-display);font-weight:400;font-size:17px}
.sv span{display:block;font-size:12.5px;color:var(--muted);margin-top:2px}
.sv em{font-style:normal;color:var(--gold-deep);font-size:20px}
.bk-h2{margin-top:4px;font-size:11px}
.bk-steps{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:6px;position:relative}
.bk-steps li{display:grid;justify-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--ink-soft)}
.bk-steps b{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--line-green);color:#fff;font-size:15px;box-shadow:0 0 0 4px rgba(6,199,85,.15)}
.bk-ft{margin-top:auto;text-align:center;font-size:13px;color:var(--ink-soft)}
.c3-halo{position:absolute;bottom:-4px;left:50%;width:min(86vw,360px);height:46px;transform:translateX(-50%);border-radius:50%;z-index:-1;
  background:radial-gradient(closest-side,rgba(255,240,190,.95),rgba(255,214,120,.35) 60%,rgba(255,214,120,0));animation:c3halo 3.2s ease-in-out infinite}
@keyframes c3halo{50%{opacity:.6;transform:translateX(-50%) scale(.92)}}
.c3-flip{position:relative;margin-top:22px;display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:999px;border:1.5px solid rgba(255,248,232,.9);background:rgba(255,253,248,.6);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);font:inherit;font-size:14px;color:#6B4E36;cursor:pointer}
.c3-flip svg{width:16px;height:16px;animation:c3spin 2.6s ease-in-out infinite}
@keyframes c3spin{60%,100%{transform:rotate(360deg)}}

/* ---------- glass blocks ---------- */
.c3-dock{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.dk{display:grid;justify-items:center;gap:6px;padding:12px 4px;border-radius:20px;text-decoration:none;color:var(--ink);font-size:12.5px;font-weight:700;
  background:rgba(255,253,248,.62);border:1.5px solid rgba(255,248,232,.95);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:0 14px 26px -20px rgba(74,52,38,.55);transition:transform .2s}
.dk:active{transform:scale(.95)}
.dk i{width:40px;height:40px;border-radius:14px;display:grid;place-items:center;color:#fff}
.dk i svg{width:22px;height:22px}
.d-line i{background:var(--line-green)}
.d-ig i{background:linear-gradient(45deg,#F2A84A,#D9488A,#7A4BD0)}
.d-mail i{background:#C99A45}
.d-web i{background:#6B4E36}
.c3-sec{position:relative;padding:22px 18px;border-radius:28px;background:rgba(255,253,248,.7);border:1.5px solid rgba(255,248,232,.95);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 24px 44px -32px rgba(74,52,38,.6);display:grid;grid-template-columns:minmax(0,1fr);gap:12px;min-width:0}
.sec-k{font-size:12px;letter-spacing:.42em;color:var(--gold-deep)}
.c3-sec h2{font-family:var(--font-display);font-weight:400;font-size:22px;margin-top:-6px}
.c3-film .clip{position:relative;justify-self:center;width:min(78vw,300px);aspect-ratio:9/16;border-radius:22px;overflow:hidden;background:#FFF9EF;box-shadow:0 26px 46px -28px rgba(74,52,38,.55)}
.c3-film video{width:100%;height:100%;object-fit:cover;display:block}
.snd{position:absolute;right:12px;top:12px;padding:7px 14px;border-radius:999px;border:0;background:rgba(255,253,248,.88);font:inherit;font-size:13px;color:var(--ink);cursor:pointer;white-space:nowrap}
.snd.on{opacity:.55}

/* works coverflow */
.c3-flow-wrap{position:relative;margin:0 -18px}
.c3-flow{display:flex;gap:14px;overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x mandatory;--wk:min(290px,72vw);padding:8px calc(50% - var(--wk) / 2) 14px;scrollbar-width:none;perspective:900px;cursor:grab;-webkit-user-select:none;user-select:none}
.c3-flow.drag{cursor:grabbing;scroll-snap-type:none}
.c3-flow.drag .wk{pointer-events:none}
.c3-flow img{-webkit-user-drag:none;pointer-events:none}
.fl-btn{position:absolute;top:calc(8px + 22%);z-index:3;width:40px;height:40px;margin-top:-20px;border-radius:50%;border:1.5px solid rgba(255,248,232,.95);background:rgba(255,253,248,.92);color:var(--gold-deep);font:inherit;font-size:26px;line-height:1;display:grid;place-items:center;cursor:pointer;box-shadow:0 10px 20px -12px rgba(74,52,38,.6);transition:opacity .2s}
.fl-btn[disabled]{opacity:0;pointer-events:none}
.fl-prev{left:8px}.fl-next{right:8px}
.fl-dots{display:flex;justify-content:center;gap:8px;margin-top:-4px}
.fl-dots i{width:8px;height:8px;border-radius:999px;background:var(--line-strong);transition:all .25s}
.fl-dots i.on{width:22px;background:var(--gold-deep)}
.c3-flow::-webkit-scrollbar{display:none}
.wk{flex:0 0 var(--wk);scroll-snap-align:center;scroll-snap-stop:always;text-decoration:none;color:inherit;display:block}
.wk{perspective:900px}
.wk-in{display:grid;gap:4px;will-change:transform}
.wk-scr{border-radius:16px;overflow:hidden;background:#fff;border:2px solid rgba(255,240,200,.95);box-shadow:0 0 14px rgba(255,226,150,.7),0 20px 30px -20px rgba(74,52,38,.6)}
.wk-bar{height:18px;background:#FFFDF8;display:flex;gap:5px;align-items:center;padding-left:9px}
.wk-bar i{width:6px;height:6px;border-radius:50%;background:#E2CDA8}
.wk img{display:block;width:100%;aspect-ratio:1200/654;object-fit:cover;object-position:50% 0}
.wk b{margin-top:8px;font-family:var(--font-display);font-weight:400;font-size:16px;text-align:center}
.wk span{font-size:12.5px;color:var(--muted);text-align:center}
.c3-link{justify-self:center;font-size:14px;color:var(--gold-deep);text-decoration:none;font-weight:700}

.c3-more a{display:grid;grid-template-columns:1fr auto;column-gap:10px;align-items:center;padding:12px 2px;border-bottom:1px dashed var(--line-strong);text-decoration:none;color:inherit}
.c3-more a:last-child{border-bottom:0}
.c3-more b{font-size:15.5px}
.c3-more span{grid-row:2;font-size:12.5px;color:var(--muted)}
.c3-more em{grid-row:span 2;grid-column:2;grid-row-start:1;font-style:normal;color:var(--gold-deep)}
.c3-share{grid-template-columns:118px 1fr;align-items:center;gap:16px}
.c3-share .qr{background:#fff;border-radius:18px;padding:8px;box-shadow:0 0 0 2px var(--gold-soft)}
.c3-share .qr img{display:block;width:100%;height:auto}
.c3-share h2{margin:0}
.c3-share p{font-size:13.5px;color:var(--ink-soft);margin-top:6px}
.c3-foot{text-align:center;font-size:12px;color:#6B4E36}

/* bottom bar */
.c3-bar{position:fixed;z-index:5;left:50%;bottom:max(12px,env(safe-area-inset-bottom));transform:translateX(-50%);width:min(calc(100% - 24px),436px);display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:6px;padding:6px;border-radius:999px;
  background:rgba(255,253,248,.8);border:1.5px solid rgba(255,248,232,.95);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 20px 40px -20px rgba(46,33,25,.6)}
.c3-bar a,.c3-bar button{display:flex;align-items:center;justify-content:center;gap:6px;min-height:46px;border-radius:999px;border:0;background:transparent;font:inherit;font-size:14px;font-weight:700;color:var(--ink);text-decoration:none;cursor:pointer}
.c3-bar svg{width:19px;height:19px}
.c3-bar .b-line{background:var(--line-green);color:#fff;font-size:15px}
.c3-toast{position:fixed;z-index:6;left:50%;bottom:86px;transform:translateX(-50%);background:var(--ink);color:var(--paper);padding:10px 18px;border-radius:999px;font-size:14px;max-width:90vw;word-break:break-all}

/* entrance */
.c3 .c3-card{animation:c3rise 1.4s cubic-bezier(.2,.8,.2,1) backwards}
@keyframes c3rise{from{opacity:0;transform:translateY(120px) rotateX(18deg) rotateY(70deg)}}
.c3 .rv{opacity:0;transform:translateY(26px);transition:opacity .7s,transform .7s}
.c3 .rv.in{opacity:1;transform:none}
.c3-left,.c3-right{display:grid;gap:22px;min-width:0}
@media (min-width:640px){
  .c3-wrap{max-width:560px;padding-left:24px;padding-right:24px}
  .c3-card{width:360px}
  .c3-flow-wrap{margin:0 -18px}
  .c3-flow{--wk:300px}
}
@media (min-width:960px){
  .c3-wrap{max-width:1060px;grid-template-columns:420px minmax(0,1fr);column-gap:56px;align-items:start;padding-top:36px}
  .c3-top{grid-column:1/-1}
  .c3-left{position:sticky;top:28px}
  .c3-card{width:340px}
  .c3-bar{left:calc(50% - 530px + 24px);transform:none;width:420px}
  .c3-left{padding-bottom:84px}
  .c3-wrap{padding-bottom:48px}
  .c3-flow{--wk:320px}
  .c3-dock .dk{padding:14px 4px}
  .c3-left::after{content:"";display:block}
}
@media (prefers-reduced-motion:reduce){
  .c3 .c3-card,.fr-ph .blob,.c3-halo,.c3-flip svg{animation:none}
  .c3-in{transition:transform .2s}
  .c3 .rv{opacity:1;transform:none}
}
[hidden]{display:none!important}

/* ===== 順暢度：手機上不用毛玻璃（後面有動態光點，毛玻璃每一格都要重算），改用較不透明的底色；名片光暈簡化 ===== */
.face{box-shadow:0 0 24px rgba(255,214,120,.55),0 36px 56px -30px rgba(74,52,38,.55)}
@media (max-width:900px){
  .dk,.c3-sec,.c3-flip,.c3-bar{backdrop-filter:none;-webkit-backdrop-filter:none}
  .c3-bar{background:rgba(255,253,248,.95)}
  .dk{background:rgba(255,253,248,.9)}
  .c3-sec{background:rgba(255,253,248,.93)}
  .c3-flip{background:rgba(255,253,248,.85)}
}

/* ===== 手機／平板：一進來先看到動態名片影片，再來聯絡按鈕，3D 名片放後面（桌機維持左右兩欄） ===== */
@media (max-width:959.98px){
  .c3-left,.c3-right{display:contents}
  .c3-top{order:0}
  .c3-film:not(.c3-film-c){order:1;padding-top:20px}
  .c3-dock{order:2}
  .c3-stage{order:3}
  .c3-right>:not(.c3-film){order:5}
  .c3-film .clip{width:min(76vw,300px)}
  .c3-right>.c3-film-c{order:4;padding-top:20px}
}

/* ===== 名片背面：4 項服務＋4 步驟，排版收緊才放得下 ===== */
.back{padding:18px 14px 14px;gap:6px}
.back h2{font-size:19px;margin-bottom:0}
.bk-list{gap:6px}
.sv{grid-template-columns:32px 1fr 10px;gap:9px;padding:6px 10px;border-radius:16px}
.sv i{width:32px;height:32px;border-radius:11px;font-size:15px}
.sv b{font-size:15px;line-height:1.3}
.sv span{font-size:11.5px;margin-top:1px;line-height:1.35}
.sv em{font-size:17px}
.bk-steps li{font-size:12px;gap:5px}
.bk-steps b{width:26px;height:26px;font-size:13px;box-shadow:0 0 0 3px rgba(6,199,85,.15)}
.bk-ft{font-size:12px}