/* ============================================================
   SnapCue showcase components (shared by / and /zh)
   1. .hero-sub  — "Social media, with subtitles": a drifting feed and an
      X-ray lens that locks onto one post at a time and reveals its subtext.
   2. .snap      — "Press Snap": a phone that runs the real flow
      (screenshot → share → read → paste) when you press the shutter.
   Relies on the page's tokens (--acc, --ink, --grad, --disp, ...).
   ============================================================ */
:root{--night:#14131C;--night-2:#1E1C2B;--sc-pos:#6FB58C;--sc-cau:#DDA055;--sc-dan:#E07B70}

/* ---------- 1. hero ---------- */
.hero-sub{padding:44px 0 0;overflow:hidden}
.hero-sub .aura .b1{width:820px;height:820px;top:-340px;left:50%;right:auto;margin-left:-410px}
.hero-sub .aura .b2{top:420px;left:-200px}
.hero-sub .hero-copy{text-align:center;max-width:840px;margin:0 auto}
.hero-sub h1{font-size:clamp(44px,7vw,88px);line-height:1;letter-spacing:-.045em;margin:22px 0}
.hero-sub .lead{max-width:36em;margin:0 auto 32px;font-size:19px}
.hero-sub .hero-cta{justify-content:center}
.hero-sub .hero-note{justify-content:center}

.stage{position:relative;height:640px;margin-top:40px;overflow:hidden;cursor:none;touch-action:pan-y;z-index:2;
  -webkit-mask-image:linear-gradient(180deg,transparent 0,#000 16%,#000 82%,transparent 100%);
          mask-image:linear-gradient(180deg,transparent 0,#000 16%,#000 82%,transparent 100%)}
.stage .cols{position:absolute;inset:0;display:flex;justify-content:center;gap:22px;z-index:2}
.stage .col{width:316px;flex:0 0 316px;position:relative}
.stage .track{position:absolute;left:0;right:0;top:0;will-change:transform}
.fcard{position:relative;height:172px;margin-bottom:18px;border-radius:20px;text-align:left}
.fcard .surf{position:absolute;inset:0;background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px 18px;box-shadow:0 14px 40px -22px rgba(26,26,34,.22)}
.fcard .meta{display:flex;align-items:center;gap:10px;margin-bottom:11px}
.fcard .av{width:30px;height:30px;border-radius:50%;flex:0 0 30px;display:flex;align-items:center;justify-content:center;font-family:var(--disp);font-size:12px;font-weight:600;color:#fff}
.fcard .who{font-size:13px;font-weight:600;line-height:1.2;color:var(--ink)}
.fcard .who small{display:block;font-weight:400;font-size:11.5px;color:var(--ink-3)}
.fcard .plat{margin-left:auto;min-width:20px;height:20px;padding:0 4px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-family:var(--disp);font-size:10.5px;font-weight:700;color:#fff}
.fcard .txt{font-size:15px;line-height:1.48;color:var(--ink);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.fcard .acts{position:absolute;left:18px;bottom:13px;display:flex;gap:16px;font-size:11.5px;color:var(--ink-3)}
.fcard .xray{position:absolute;inset:0;border-radius:20px;padding:15px 18px;background:linear-gradient(160deg,var(--night-2),var(--night));
  border:1px solid rgba(155,135,254,.35);color:#fff;clip-path:inset(50%);display:flex;flex-direction:column}
.xk{font-family:var(--disp);font-size:10.5px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--acc-2);display:flex;align-items:center;gap:7px}
.xk .orig{margin-left:auto;letter-spacing:0;text-transform:none;font-weight:400;color:rgba(255,255,255,.38);font-family:var(--body);font-size:11px;max-width:150px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.xsub{font-family:var(--disp);font-size:17.5px;line-height:1.32;font-weight:500;letter-spacing:-.01em;margin:9px 0 auto;color:#FBFAFF;text-shadow:0 0 18px rgba(155,135,254,.35)}
.xchips{display:flex;gap:6px;flex-wrap:wrap}
.xchip{display:inline-flex;align-items:center;gap:5px;height:22px;padding:0 8px;border-radius:7px;font-size:11px;font-weight:600;background:rgba(255,255,255,.08);color:rgba(255,255,255,.82)}
.xchip i{width:6px;height:6px;border-radius:50%;display:block}
.xchip.pos i{background:var(--sc-pos)}.xchip.cau i{background:var(--sc-cau)}.xchip.dan i{background:var(--sc-dan)}
.xchip.dan{background:rgba(224,123,112,.16);color:#FFC9C2}
.xchip.tone{background:rgba(155,135,254,.18);color:#D9D1FF}

.lens-bg{position:absolute;z-index:1;left:0;top:0;border-radius:26px;background:radial-gradient(120% 120% at 50% 0%,#24213A,var(--night) 70%);pointer-events:none;will-change:transform}
.lens{position:absolute;z-index:3;left:0;top:0;pointer-events:none;will-change:transform}
.lens .frame{position:absolute;inset:0;border-radius:26px;box-shadow:0 0 0 1px rgba(155,135,254,.45),0 0 60px -6px rgba(125,108,237,.55),0 40px 90px -30px rgba(26,26,34,.55)}
.lens .lc{position:absolute;width:30px;height:30px;border:2.5px solid var(--acc-2);filter:drop-shadow(0 0 6px rgba(155,135,254,.8))}
.lens .lc1{top:-7px;left:-7px;border-right:0;border-bottom:0;border-radius:14px 0 0 0}
.lens .lc2{top:-7px;right:-7px;border-left:0;border-bottom:0;border-radius:0 14px 0 0}
.lens .lc3{bottom:-7px;left:-7px;border-right:0;border-top:0;border-radius:0 0 0 14px}
.lens .lc4{bottom:-7px;right:-7px;border-left:0;border-top:0;border-radius:0 0 14px 0}
.lens .lbeam{position:absolute;left:10px;right:10px;height:2px;top:0;border-radius:2px;background:linear-gradient(90deg,transparent,var(--acc-2),transparent);box-shadow:0 0 16px 2px rgba(155,135,254,.7);animation:lbeam 2.8s cubic-bezier(.5,0,.5,1) infinite}
@keyframes lbeam{0%{top:8px;opacity:0}10%{opacity:1}50%{top:calc(100% - 10px);opacity:1}60%{opacity:0}100%{top:calc(100% - 10px);opacity:0}}
.lens .ltag{position:absolute;top:-38px;left:0;display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px 0 8px;border-radius:999px;background:var(--night);color:#fff;font-family:var(--disp);font-size:12px;font-weight:500;box-shadow:0 8px 20px -8px rgba(26,26,34,.5);white-space:nowrap}
.lens .ltag svg{width:18px;height:auto}
.lens .ltag .st{color:var(--acc-2)}
.lreply{position:absolute;left:50%;top:calc(100% + 16px);transform:translateX(-50%);width:max-content;max-width:360px;display:flex;gap:10px;align-items:center;text-align:left;
  background:#fff;border:1px solid rgba(125,108,237,.28);border-radius:16px;padding:10px 10px 10px 14px;box-shadow:0 20px 50px -18px rgba(76,60,190,.45);transition:opacity .35s,transform .35s}
.lreply.swap{opacity:0;transform:translateX(-50%) translateY(6px)}
.lreply .rl{font-family:var(--disp);font-size:10.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--acc-ink);flex:0 0 auto}
.lreply .rt{font-size:13.5px;line-height:1.4;color:var(--ink)}
.lreply .ok{flex:0 0 auto;display:inline-flex;align-items:center;gap:4px;height:24px;padding:0 8px;border-radius:8px;background:var(--grad);color:#fff;font-size:11.5px;font-weight:600;white-space:nowrap}
.lreply.skip .ok{background:rgba(224,123,112,.14);color:#B4453C}
.stage-hint{position:absolute;z-index:4;left:50%;bottom:10px;transform:translateX(-50%);font-family:var(--disp);font-size:12.5px;color:var(--ink-3);letter-spacing:.04em;transition:opacity .4s;white-space:nowrap}
@media(max-width:1060px){.stage .col:nth-child(3){display:none}}
@media(max-width:700px){
  .stage{height:600px;cursor:auto}
  .stage .col:nth-child(2){display:none}
  .stage .col{width:min(316px,calc(100vw - 48px));flex-basis:auto}
  .stage-hint{display:none}
  .lreply{max-width:calc(100vw - 40px)}
}

/* ---------- 2. snap demo ---------- */
.snap-grid{display:grid;grid-template-columns:auto 1fr;gap:72px;align-items:center;max-width:960px;margin:0 auto}
.snap .phone{width:min(272px,calc(100vw - 80px))}
.snap .sec-head{margin-bottom:40px}
.snap.band{padding:96px 0}
.snap .screen{background:#FBFBFD}
.app{position:absolute;inset:0;padding:46px 14px 14px;display:flex;flex-direction:column;gap:10px;font-size:12px;color:#16161C}
.app-top{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:rgba(22,22,28,.55)}
.app-top b{color:#16161C;font-weight:600}
.app-post{display:flex;gap:9px;padding:10px;border-radius:12px;background:#F3F3F7;color:rgba(22,22,28,.62);line-height:1.45}
.app-av{width:26px;height:26px;border-radius:50%;flex:0 0 26px;display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;color:#fff;font-family:var(--disp)}
.app-cmt{display:flex;gap:9px;padding:6px 2px;line-height:1.45}
.app-cmt .nm{font-weight:600;font-size:11.5px}
.app-cmt .nm small{font-weight:400;color:rgba(22,22,28,.45);margin-left:5px}
.app-cmt .tx{font-size:12.5px;margin-top:1px}
.app-cmt.target .tx{background:rgba(125,108,237,.10);border-radius:6px;padding:2px 5px;margin-left:-5px}
.app-cmt.dim{opacity:.55}
.app-input{margin-top:auto;display:flex;align-items:center;gap:8px;min-height:40px;padding:8px 12px;border-radius:20px;border:1px solid rgba(22,22,28,.12);background:#fff;font-size:12px;color:rgba(22,22,28,.4);transition:border-color .3s,box-shadow .3s}
.app-input.filled{color:#16161C;border-color:rgba(125,108,237,.5);box-shadow:0 0 0 4px rgba(125,108,237,.12)}
.app-input .send{margin-left:auto;font-weight:700;color:var(--acc-ink);opacity:0;transition:opacity .3s;white-space:nowrap;flex:0 0 auto}
.app-input.filled .send{opacity:1}

.flash{position:absolute;inset:0;background:#fff;opacity:0;pointer-events:none;z-index:6}
.flash.go{animation:flash .45s ease-out}
@keyframes flash{0%{opacity:0}15%{opacity:1}100%{opacity:0}}
.sthumb{position:absolute;z-index:7;left:0;top:0;width:100%;height:100%;border-radius:36px;background:#FBFBFD;border:3px solid #fff;box-shadow:0 10px 30px -6px rgba(26,26,34,.4);
  transform-origin:0 100%;opacity:0;pointer-events:none;overflow:hidden;transition:transform .55s cubic-bezier(.3,.8,.3,1),opacity .3s,border-radius .55s}
.sthumb.on{opacity:1}
.sthumb.small{transform:translate(14px,-16px) scale(.26);border-radius:46px}
.sthumb::before{content:"";position:absolute;inset:44px 14px auto;height:54px;border-radius:12px;background:#ECECF2}
.sthumb::after{content:"";position:absolute;left:14px;right:40px;top:120px;height:12px;border-radius:6px;background:rgba(125,108,237,.25);box-shadow:0 26px 0 #ECECF2,0 52px 0 #ECECF2}

.share-sheet{position:absolute;z-index:8;left:8px;right:8px;bottom:8px;border-radius:26px;background:rgba(246,246,250,.96);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  padding:16px 14px 18px;box-shadow:0 -10px 40px -10px rgba(26,26,34,.25);transform:translateY(110%);transition:transform .45s cubic-bezier(.3,.8,.3,1)}
.share-sheet.on{transform:none}
.share-sheet .sh-t{font-size:11px;font-weight:600;color:rgba(22,22,28,.5);margin:0 4px 12px}
.share-apps{display:flex;justify-content:space-between}
.sh-app{display:flex;flex-direction:column;align-items:center;gap:6px;font-size:10px;color:rgba(22,22,28,.65);width:58px}
.sh-ic{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;transition:transform .25s,box-shadow .25s}
.sh-app.sc .sh-ic{background:#fff;box-shadow:0 0 0 1px rgba(125,108,237,.25)}
.sh-app.sc .sh-ic svg{width:30px}
.sh-app.sc.tap .sh-ic{transform:scale(.88);box-shadow:0 0 0 4px rgba(125,108,237,.35)}

.sc-sheet{position:absolute;z-index:9;left:0;right:0;bottom:0;top:38px;border-radius:26px 26px 0 0;background:#FBFBFD;box-shadow:0 -14px 40px -12px rgba(26,26,34,.3);
  transform:translateY(105%);transition:transform .5s cubic-bezier(.3,.8,.3,1);display:flex;flex-direction:column}
.sc-sheet.on{transform:none}
.sc-grab{width:36px;height:5px;border-radius:3px;background:rgba(22,22,28,.15);margin:8px auto 4px}
.sc-body{flex:1;min-height:0;padding:8px 15px 8px;display:flex;flex-direction:column;gap:13px;overflow-y:auto;scrollbar-width:none}
.sc-body::-webkit-scrollbar{display:none}
.sc-body > *{flex:0 0 auto}
.sc-body > *{opacity:0;transform:translateY(8px);transition:opacity .4s,transform .4s}
.sc-body > .in{opacity:1;transform:none}
.sc-bar{padding:8px 14px 14px;display:flex;flex-direction:column;gap:8px}
.sc-bar .copy-btn{transition:transform .2s}
.sc-bar .copy-btn.tap{transform:scale(.96)}
.sc-bar .copy-btn.done{background:linear-gradient(120deg,#6FB58C,#3E7C5A)}
.snap .s-reply.typing::after{content:"";display:inline-block;width:2px;height:1em;background:var(--acc);vertical-align:-2px;margin-left:1px;animation:sblink 1s step-end infinite}
@keyframes sblink{50%{opacity:0}}
.snap .s-risk.calm{background:rgba(111,181,140,.12);border-color:rgba(111,181,140,.3)}
.snap .s-risk.calm svg{stroke:#3E7C5A}
.snap .s-risk.mid{background:rgba(221,160,85,.12);border-color:rgba(221,160,85,.3)}
.snap .s-risk.mid svg{stroke:#C2762E}
.stoast{position:absolute;z-index:10;left:50%;top:52px;transform:translate(-50%,-10px);opacity:0;padding:7px 13px;border-radius:999px;background:#16161C;color:#fff;font-size:11.5px;font-weight:600;white-space:nowrap;transition:all .3s;pointer-events:none}
.stoast.on{opacity:1;transform:translate(-50%,0)}

.snap-side h3{font-family:var(--disp);font-size:15px;font-weight:500;color:var(--ink-3);margin-bottom:18px}
.ssteps{list-style:none;display:flex;flex-direction:column;gap:6px;margin-bottom:34px}
.sstep{display:flex;gap:16px;align-items:flex-start;padding:14px 16px;border-radius:16px;border:1px solid transparent;transition:background .35s,border-color .35s,opacity .35s;opacity:.5}
.sstep .n{flex:0 0 30px;height:30px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-family:var(--disp);font-size:13px;font-weight:600;background:rgba(26,26,34,.06);color:var(--ink-3);transition:all .35s}
.sstep b{display:block;font-family:var(--disp);font-size:18px;font-weight:600;letter-spacing:-.01em;margin-bottom:3px}
.sstep span{font-size:14px;color:var(--ink-2);line-height:1.5}
.sstep.on{opacity:1;background:#fff;border-color:rgba(155,135,254,.3);box-shadow:0 14px 40px -24px rgba(125,108,237,.6)}
.sstep.on .n{background:var(--acc);color:#fff;box-shadow:0 0 0 4px rgba(125,108,237,.15)}
.sstep.done{opacity:1}
.sstep.done .n{background:rgba(111,181,140,.16);color:#3E7C5A}
.shutter-row{display:flex;align-items:center;gap:18px}
.shutter{position:relative;width:76px;height:76px;border-radius:50%;border:none;cursor:pointer;background:#fff;box-shadow:0 0 0 4px rgba(125,108,237,.22),0 16px 40px -12px rgba(125,108,237,.6);display:flex;align-items:center;justify-content:center;transition:transform .15s}
.shutter::before{content:"";width:58px;height:58px;border-radius:50%;background:var(--grad);transition:transform .15s}
.shutter:hover::before{transform:scale(.94)}
.shutter:active{transform:scale(.94)}
.shutter.idle::after{content:"";position:absolute;inset:-4px;border-radius:50%;border:2px solid var(--acc);animation:ring 2.2s ease-out infinite;opacity:0}
.shutter[disabled]{cursor:default;opacity:.55}
.shutter-label{font-family:var(--disp);font-size:16px;font-weight:600}
.shutter-label small{display:block;font-family:var(--body);font-size:13px;font-weight:400;color:var(--ink-3);margin-top:2px}
.sdots{display:flex;gap:6px;margin-top:22px}
.sdots button{width:8px;height:8px;border-radius:50%;border:none;background:rgba(26,26,34,.15);cursor:pointer;padding:0;transition:all .25s}
.sdots button.on{width:22px;border-radius:4px;background:var(--acc)}
@media(max-width:860px){.snap-grid{grid-template-columns:1fr;gap:28px;justify-items:center}.snap-side{width:100%;max-width:420px;display:flex;flex-direction:column}.shutter-row{order:-2;justify-content:center;margin-bottom:8px}.sdots{order:-1;justify-content:center;margin:0 0 22px}.snap-side .ssteps{margin-bottom:0}}

/* ---------- language example ---------- */
.gloss{max-width:720px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:0 24px 60px -30px rgba(26,26,34,.25);overflow:hidden;text-align:left}
.gl-row{display:grid;grid-template-columns:120px 1fr;gap:18px;padding:20px 26px;border-bottom:1px solid var(--line);align-items:baseline}
.gl-row:last-child{border-bottom:0}
.gl-row .k{font-family:var(--disp);font-size:11.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.gl-row.mean{background:linear-gradient(160deg,var(--night-2),var(--night));color:#fff}
.gl-row.mean .k{color:var(--acc-2)}
.gl-row .o{font-size:17px}
.gl-row .m{font-family:var(--disp);font-size:20px;font-weight:500;line-height:1.4}
.gl-row .r{font-size:17px}
.gl-row .r small{display:block;margin-top:5px;font-size:13.5px;color:var(--ink-3)}
@media(max-width:620px){.gl-row{grid-template-columns:1fr;gap:6px;padding:18px 20px}}

/* ---------- faq ---------- */
.faq{max-width:780px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:18px;margin-bottom:10px;transition:border-color .2s,box-shadow .2s}
.faq details[open]{border-color:rgba(155,135,254,.35);box-shadow:0 18px 40px -26px rgba(125,108,237,.5)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:20px 24px;font-family:var(--disp);font-size:17px;font-weight:500;letter-spacing:-.01em}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:22px;font-weight:400;color:var(--acc);transition:transform .2s;line-height:1}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 24px 22px;color:var(--ink-2);font-size:15.5px;line-height:1.65}

@media(prefers-reduced-motion:reduce){.lens .lbeam,.shutter.idle::after{animation:none}.flash.go{animation:none}}

/* footer links wrap on small screens (was overflowing at 390px) */
.foot-links{flex-wrap:wrap;row-gap:4px}

/* ---------- accessibility & polish (review pass) ---------- */
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.stage{cursor:default}
.stage-pause{position:absolute;z-index:5;right:16px;bottom:8px;height:30px;padding:0 12px;border-radius:999px;border:1px solid var(--line-bright);background:rgba(255,255,255,.85);
  font-family:var(--disp);font-size:12px;color:var(--ink-2);cursor:pointer;backdrop-filter:blur(8px)}
.stage-pause:hover{color:var(--ink)}
.sdots{gap:2px}
.sdots button{position:relative;width:24px;height:24px;border-radius:0;background:none}
.sdots button::before{content:"";position:absolute;left:8px;top:8px;width:8px;height:8px;border-radius:4px;background:rgba(26,26,34,.2);transition:all .25s}
.sdots button.on{width:38px;background:none}
.sdots button.on::before{width:22px;background:var(--acc)}
.sdots button[disabled]{cursor:default}
.shutter:focus-visible,.sdots button:focus-visible,.stage-pause:focus-visible,.faq summary:focus-visible{outline:2px solid var(--acc-ink);outline-offset:3px}
/* contrast: small secondary text ≥ 4.5:1 on the lavender page, white-on-violet buttons ≥ 4.5:1 */
:root{--ink-3:rgba(26,26,34,.62);--ink-2:rgba(26,26,34,.7)}
.btn-primary{background:var(--acc-ink)}
.nav-links a.btn-primary{color:#fff}
.s-hint{color:rgba(22,22,28,.6)}
.final .wrap > a.btn{margin:6px!important}
.faq-more{text-align:center;margin-top:22px;font-size:15px;color:var(--ink-2)}
.faq-more a{color:var(--acc-ink);font-weight:600}