/* Component classes lifted from sonder-studio/styles.css + demo-kit/sonder-demo.css. Prefix: ss- */
.ss-wrap{max-width:1240px;margin:0 auto;padding-inline:clamp(16px,4vw,48px)}
.ss-wrap.demo{max-width:1080px;padding-inline:clamp(16px,4vw,40px)}

/* buttons, four kinds:
   metal keycap   = the CTA (one per view), coloured by meaning: emerald confirm/create · gold attention/premium · burgundy destructive.
   granite keycap = a solid, neutral primary action where a metal colour would carry the wrong meaning (e.g. "Try the demo", "Download", "Run").
                    Same keycap construction as metal (sizes, bevel, stacked-shadow side wall, press travel), minus the glint sweep.
   glass key      = every ordinary button. Liquid-glass, see-through, sits quietly.
   ghost pill     = flat tertiary actions (copy, show more, links-as-buttons). */
.ss-btn{position:relative;isolation:isolate;overflow:hidden;display:inline-flex;align-items:center;justify-content:center;gap:10px;border:0;cursor:pointer;text-decoration:none;white-space:nowrap;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;letter-spacing:.005em;transform:translateY(0);transition:transform .2s cubic-bezier(.3,1.45,.5,1),box-shadow .2s cubic-bezier(.3,1.45,.5,1),filter .25s ease,background-color .25s ease,color .2s ease,border-color .2s ease}
.ss-btn>*{flex-shrink:0}
.ss-btn *{-webkit-user-select:none;user-select:none;pointer-events:none}
.ss-btn.s-md{border-radius:12px;padding:15px 28px 16px;font:600 1.02rem/1.55 var(--sans)}
.ss-btn.s-sm{border-radius:10px;padding:11px 18px 12px;gap:8px;font:600 14px/1 var(--sans)}
.ss-btn.s-chip{border-radius:10px;height:36px;min-width:36px;padding:0;font:600 .74rem/1 var(--mono);letter-spacing:.08em}
.ss-btn.s-chip.text{padding-inline:11px}
.ss-btn svg{width:17px;height:17px;fill:currentColor}
/* faint pointer light (metal + glass) */
.ss-btn::before{content:"";position:absolute;inset:0;z-index:-1;border-radius:inherit;pointer-events:none;background:radial-gradient(16px circle at var(--mx,30%) var(--my,10%),rgba(255,255,255,.22),rgba(255,255,255,0) 100%),radial-gradient(140px circle at var(--mx,30%) var(--my,10%),rgba(255,255,255,.08),rgba(255,255,255,0) 70%);mix-blend-mode:screen;opacity:0;transition:opacity .35s ease}
.ss-btn:hover::before{opacity:1}
.ss-btn:active::before{opacity:.3}
.ss-btn .ss-arrow{font-family:var(--display);font-weight:700;font-size:1.18em;line-height:1;transform:translateY(-.02em);transition:transform .2s ease}
.ss-btn:hover .ss-arrow{transform:translate(4px,-.02em)}
@keyframes ss-glint{0%{transform:translateX(-130%);animation-timing-function:cubic-bezier(.55,0,.8,.45)}26%,100%{transform:translateX(130%)}}

/* metal keycap (CTA) */
.ss-btn.metal.s-md{margin-bottom:6px}.ss-btn.metal.s-sm{margin-bottom:5px}
.ss-btn.metal::after{content:"";position:absolute;inset:-2px;z-index:-1;pointer-events:none;background:linear-gradient(105deg,transparent 30%,rgba(255,255,255,.28) 48%,rgba(255,255,255,.06) 54%,transparent 70%);transform:translateX(-130%);animation:ss-glint 7s 1.2s infinite}
.ss-btn.metal:hover{filter:brightness(1.05) saturate(1.05)}
.ss-btn.metal:hover::after{animation:none;transform:translateX(130%);transition:transform 1.5s cubic-bezier(.55,0,.8,.45)}
.ss-btn.metal:active{filter:brightness(.93);transition:transform .07s ease-out,box-shadow .07s ease-out,filter .07s ease-out}
.ss-btn.metal .ss-label,.ss-btn.metal .ss-arrow{-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.ss-btn.metal.t-emerald{background:var(--gloss-emerald);color:#ffffff}
.ss-btn.metal.t-emerald .ss-label,.ss-btn.metal.t-emerald .ss-arrow{background:var(--gloss-label-chrome);-webkit-background-clip:text;background-clip:text;filter:drop-shadow(0 1px 0 rgba(0,0,0,.5))}
.ss-btn.metal.t-emerald.s-md{box-shadow:inset 0 2px 1px -1px rgba(255,255,255,.6),inset 0 1px 0 rgba(255,255,255,.3),inset 2px 0 3px -2px rgba(255,255,255,.14),inset -2px 0 3px -2px rgba(0,0,0,0.32),inset 0 -3px 4px -2px rgba(0,0,0,0.42000000000000004),inset 0 0 0 1px rgba(160,235,195,.12),0 1px 0 #2a6e51,0 2px 0 #1e5740,0 3px 0 #13402f,0 4px 0 #0b2d21,0 5px 0 #061e16,0 6px 0 #02100b,0 7px 0 rgba(16,17,17,.22),0 9px 3px rgba(16,17,17,.16)}
.ss-btn.metal.t-emerald.s-md:active{transform:translateY(5px);box-shadow:inset 0 3px 5px -1px rgba(0,0,0,.4),inset 0 1px 0 rgba(255,255,255,.15),inset 0 0 0 1px rgba(0,0,0,.22),0 1px 0 #2a6e51,0 2px 0 rgba(16,17,17,.22),0 4px 3px rgba(16,17,17,.16)}
.ss-btn.metal.t-emerald.s-sm{box-shadow:inset 0 2px 1px -1px rgba(255,255,255,.6),inset 0 1px 0 rgba(255,255,255,.3),inset 2px 0 3px -2px rgba(255,255,255,.14),inset -2px 0 3px -2px rgba(0,0,0,0.32),inset 0 -3px 4px -2px rgba(0,0,0,0.42000000000000004),inset 0 0 0 1px rgba(160,235,195,.12),0 1px 0 #2a6e51,0 2px 0 #1c513c,0 3px 0 #0d3426,0 4px 0 #082219,0 5px 0 #02100b,0 6px 0 rgba(16,17,17,.22),0 8px 3px rgba(16,17,17,.16)}
.ss-btn.metal.t-emerald.s-sm:active{transform:translateY(4px);box-shadow:inset 0 3px 5px -1px rgba(0,0,0,.4),inset 0 1px 0 rgba(255,255,255,.15),inset 0 0 0 1px rgba(0,0,0,.22),0 1px 0 #2a6e51,0 2px 0 rgba(16,17,17,.22),0 4px 3px rgba(16,17,17,.16)}
.ss-btn.metal.t-gold{background:var(--gloss-gold);color:#23180a}
.ss-btn.metal.t-gold .ss-label,.ss-btn.metal.t-gold .ss-arrow{background:var(--gloss-label-bronze);-webkit-background-clip:text;background-clip:text;filter:drop-shadow(0 1px 0 rgba(255,244,214,.55))}
.ss-btn.metal.t-gold.s-md{box-shadow:inset 0 2px 1px -1px rgba(255,255,255,.6),inset 0 1px 0 rgba(255,255,255,.3),inset 2px 0 3px -2px rgba(255,255,255,.14),inset -2px 0 3px -2px rgba(0,0,0,0.28),inset 0 -3px 4px -2px rgba(0,0,0,0.38),inset 0 0 0 1px rgba(255,240,200,.22),0 1px 0 #c9a463,0 2px 0 #a9874d,0 3px 0 #8a6a37,0 4px 0 #6d5126,0 5px 0 #543e1b,0 6px 0 #3a2a10,0 7px 0 rgba(16,17,17,.22),0 9px 3px rgba(16,17,17,.16)}
.ss-btn.metal.t-gold.s-md:active{transform:translateY(5px);box-shadow:inset 0 3px 5px -1px rgba(0,0,0,.4),inset 0 1px 0 rgba(255,255,255,.15),inset 0 0 0 1px rgba(0,0,0,.22),0 1px 0 #c9a463,0 2px 0 rgba(16,17,17,.22),0 4px 3px rgba(16,17,17,.16)}
.ss-btn.metal.t-gold.s-sm{box-shadow:inset 0 2px 1px -1px rgba(255,255,255,.6),inset 0 1px 0 rgba(255,255,255,.3),inset 2px 0 3px -2px rgba(255,255,255,.14),inset -2px 0 3px -2px rgba(0,0,0,0.28),inset 0 -3px 4px -2px rgba(0,0,0,0.38),inset 0 0 0 1px rgba(255,240,200,.22),0 1px 0 #c9a463,0 2px 0 #a28048,0 3px 0 #7a5b2c,0 4px 0 #5a431e,0 5px 0 #3a2a10,0 6px 0 rgba(16,17,17,.22),0 8px 3px rgba(16,17,17,.16)}
.ss-btn.metal.t-gold.s-sm:active{transform:translateY(4px);box-shadow:inset 0 3px 5px -1px rgba(0,0,0,.4),inset 0 1px 0 rgba(255,255,255,.15),inset 0 0 0 1px rgba(0,0,0,.22),0 1px 0 #c9a463,0 2px 0 rgba(16,17,17,.22),0 4px 3px rgba(16,17,17,.16)}
.ss-btn.metal.t-burgundy{background:var(--gloss-burgundy);color:#ffffff}
.ss-btn.metal.t-burgundy .ss-label,.ss-btn.metal.t-burgundy .ss-arrow{background:var(--gloss-label-chrome-warm);-webkit-background-clip:text;background-clip:text;filter:drop-shadow(0 1px 0 rgba(0,0,0,.55))}
.ss-btn.metal.t-burgundy.s-md{box-shadow:inset 0 2px 1px -1px rgba(255,255,255,.6),inset 0 1px 0 rgba(255,255,255,.3),inset 2px 0 3px -2px rgba(255,255,255,.14),inset -2px 0 3px -2px rgba(0,0,0,0.32),inset 0 -3px 4px -2px rgba(0,0,0,0.42000000000000004),inset 0 0 0 1px rgba(255,190,190,.12),0 1px 0 #9a4448,0 2px 0 #753033,0 3px 0 #501c1e,0 4px 0 #350f11,0 5px 0 #24090a,0 6px 0 #120304,0 7px 0 rgba(16,17,17,.22),0 9px 3px rgba(16,17,17,.16)}
.ss-btn.metal.t-burgundy.s-md:active{transform:translateY(5px);box-shadow:inset 0 3px 5px -1px rgba(0,0,0,.4),inset 0 1px 0 rgba(255,255,255,.15),inset 0 0 0 1px rgba(0,0,0,.22),0 1px 0 #9a4448,0 2px 0 rgba(16,17,17,.22),0 4px 3px rgba(16,17,17,.16)}
.ss-btn.metal.t-burgundy.s-sm{box-shadow:inset 0 2px 1px -1px rgba(255,255,255,.6),inset 0 1px 0 rgba(255,255,255,.3),inset 2px 0 3px -2px rgba(255,255,255,.14),inset -2px 0 3px -2px rgba(0,0,0,0.32),inset 0 -3px 4px -2px rgba(0,0,0,0.42000000000000004),inset 0 0 0 1px rgba(255,190,190,.12),0 1px 0 #9a4448,0 2px 0 #6c2b2e,0 3px 0 #3e1214,0 4px 0 #280b0c,0 5px 0 #120304,0 6px 0 rgba(16,17,17,.22),0 8px 3px rgba(16,17,17,.16)}
.ss-btn.metal.t-burgundy.s-sm:active{transform:translateY(4px);box-shadow:inset 0 3px 5px -1px rgba(0,0,0,.4),inset 0 1px 0 rgba(255,255,255,.15),inset 0 0 0 1px rgba(0,0,0,.22),0 1px 0 #9a4448,0 2px 0 rgba(16,17,17,.22),0 4px 3px rgba(16,17,17,.16)}

/* granite keycap: polished speckled stone; engraved light-grey lettering */
.ss-btn.granite.s-md{margin-bottom:6px}.ss-btn.granite.s-sm{margin-bottom:5px}
.ss-btn.granite{background:var(--gloss-granite);background-color:#46484a;color:#c9cccd}
.ss-btn.granite .ss-label,.ss-btn.granite .ss-arrow{color:#c9cccd;text-shadow:0 -1px 0 rgba(0,0,0,.75),0 1px 0 rgba(255,255,255,.12)}
.ss-btn.granite:hover{filter:brightness(1.07)}
.ss-btn.granite:active{filter:brightness(.93);transition:transform .07s ease-out,box-shadow .07s ease-out,filter .07s ease-out}
.ss-btn.granite.s-md{box-shadow:inset 0 2px 1px -1px rgba(255,255,255,.34),inset 0 1px 0 rgba(255,255,255,.2),inset 2px 0 3px -2px rgba(255,255,255,.1),inset -2px 0 3px -2px rgba(0,0,0,.4),inset 0 -3px 4px -2px rgba(0,0,0,.45),inset 0 0 0 1px rgba(255,255,255,.06),0 1px 0 #3a3c3e,0 2px 0 #313335,0 3px 0 #282a2b,0 4px 0 #1d1f20,0 5px 0 #131415,0 6px 0 #0b0c0c,0 7px 0 rgba(16,17,17,.22),0 9px 3px rgba(16,17,17,.16)}
.ss-btn.granite.s-md:active{transform:translateY(5px);box-shadow:inset 0 3px 5px -1px rgba(0,0,0,.5),inset 0 1px 0 rgba(255,255,255,.1),inset 0 0 0 1px rgba(0,0,0,.25),0 1px 0 #3a3c3e,0 2px 0 rgba(16,17,17,.22),0 4px 3px rgba(16,17,17,.16)}
.ss-btn.granite.s-sm{box-shadow:inset 0 2px 1px -1px rgba(255,255,255,.34),inset 0 1px 0 rgba(255,255,255,.2),inset 2px 0 3px -2px rgba(255,255,255,.1),inset -2px 0 3px -2px rgba(0,0,0,.4),inset 0 -3px 4px -2px rgba(0,0,0,.45),inset 0 0 0 1px rgba(255,255,255,.06),0 1px 0 #3a3c3e,0 2px 0 #2e3032,0 3px 0 #1d1f20,0 4px 0 #131415,0 5px 0 #0b0c0c,0 6px 0 rgba(16,17,17,.22),0 8px 3px rgba(16,17,17,.16)}
.ss-btn.granite.s-sm:active{transform:translateY(4px);box-shadow:inset 0 3px 5px -1px rgba(0,0,0,.5),inset 0 1px 0 rgba(255,255,255,.1),inset 0 0 0 1px rgba(0,0,0,.25),0 1px 0 #3a3c3e,0 2px 0 rgba(16,17,17,.22),0 4px 3px rgba(16,17,17,.16)}

/* glass key (ordinary), clear liquid glass: barely-there fill, light blur, refractive gradient rim, hairline outline */
.ss-btn.glass{color:var(--ink);background:linear-gradient(180deg,rgba(255,255,255,.34) 0%,rgba(255,255,255,.06) 52%,rgba(255,255,255,.14) 100%);-webkit-backdrop-filter:blur(6px) saturate(1.6) brightness(1.04);backdrop-filter:blur(6px) saturate(1.6) brightness(1.04);box-shadow:inset 0 1px 0 rgba(255,255,255,.85),inset 0 -1px 0 rgba(255,255,255,.22),0 0 0 .5px rgba(16,17,17,.16),0 1px 2px rgba(16,17,17,.06),0 4px 10px -6px rgba(16,17,17,.14)}
.ss-btn.glass::after{content:"";position:absolute;inset:0;z-index:-1;border-radius:inherit;padding:1px;pointer-events:none;background:linear-gradient(135deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.12) 38%,rgba(255,255,255,0) 60%,rgba(255,255,255,.6) 100%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask:linear-gradient(#000 0 0) content-box exclude,linear-gradient(#000 0 0)}
.ss-btn.glass.s-md,.ss-btn.glass.s-sm{margin-bottom:1px}
.ss-btn.glass::before{mix-blend-mode:normal;background:radial-gradient(16px circle at var(--mx,30%) var(--my,10%),rgba(255,255,255,.3),rgba(255,255,255,0) 100%),radial-gradient(140px circle at var(--mx,30%) var(--my,10%),rgba(255,255,255,.1),rgba(255,255,255,0) 70%)}
.ss-btn.glass:hover{background:linear-gradient(180deg,rgba(255,255,255,.44) 0%,rgba(255,255,255,.10) 52%,rgba(255,255,255,.18) 100%)}
.ss-btn.glass:active{transform:translateY(1px);box-shadow:inset 0 1px 2px rgba(16,17,17,.10),0 0 0 .5px rgba(16,17,17,.18);transition:transform .07s ease-out,box-shadow .07s ease-out}
:root[data-theme="dark"] .ss-btn.glass{color:#eeeeec;background:linear-gradient(180deg,rgba(255,255,255,.12) 0%,rgba(255,255,255,.02) 52%,rgba(255,255,255,.05) 100%);box-shadow:inset 0 1px 0 rgba(255,255,255,.22),0 0 0 .5px rgba(0,0,0,.6),0 4px 10px -6px rgba(0,0,0,.5)}
:root[data-theme="dark"] .ss-btn.glass::after{background:linear-gradient(135deg,rgba(255,255,255,.35) 0%,rgba(255,255,255,.04) 40%,rgba(255,255,255,0) 60%,rgba(255,255,255,.18) 100%)}
:root[data-theme="dark"] .ss-btn.glass:hover{background:linear-gradient(180deg,rgba(255,255,255,.16) 0%,rgba(255,255,255,.04) 52%,rgba(255,255,255,.07) 100%)}

/* ghost pill (tertiary) */
.ss-btn.ghost{border-radius:999px;background:transparent;color:var(--ink-soft);border:1px solid var(--line)}
.ss-btn.ghost.s-md{font:500 .88rem var(--mono);padding:14px 18px}
.ss-btn.ghost.s-sm{font:500 14px/1 var(--sans);padding:11px 16px}
.ss-btn.ghost::before{display:none}
.ss-btn.ghost:hover{color:var(--ink);border-color:var(--ink-faint)}
.ss-btn.ghost[data-state="copied"]{color:var(--accent);border-color:var(--accent)}

.ss-btn:disabled,.ss-btn[aria-disabled="true"]{cursor:not-allowed;filter:grayscale(.7) brightness(.97);opacity:.5}
.ss-btn:disabled::after{animation:none}
.ss-btn:disabled:active{transform:none}
@media (prefers-reduced-motion:reduce){.ss-btn::after{animation:none!important;display:none}}

/* labels */
.ss-kicker{display:flex;gap:12px;margin:0;font-family:var(--mono);font-size:.74rem;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-soft)}
.ss-kicker span:first-child{color:var(--accent)}
.ss-eyebrow{display:flex;align-items:center;gap:9px;margin:0;font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;color:var(--ink-soft)}
.ss-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);animation:ss-ping 2.4s infinite;flex:none}
@keyframes ss-ping{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--accent) 50%,transparent)}80%,100%{box-shadow:0 0 0 8px transparent}}
.ss-status{display:inline-flex;align-items:center;gap:7px;white-space:nowrap;flex:none;font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;color:var(--ink-soft)}
.ss-status::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--status-building)}
.ss-status.live::before{background:var(--status-live)}
.ss-tag{font:500 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}

/* headings */
.ss-h{margin:0;font-family:var(--display);font-weight:600;color:var(--ink)}
.ss-h.hero{font-size:clamp(3rem,7vw,6rem);line-height:.92;letter-spacing:-0.045em}
.ss-h.title{font-size:clamp(2.2rem,5vw,4rem);line-height:1.02;letter-spacing:-0.04em;max-width:18ch}
.ss-h.big{font-size:clamp(2.8rem,7.5vw,6.2rem);line-height:.95;letter-spacing:-0.04em;max-width:14ch}
.ss-h.statement{font-size:clamp(2.2rem,4.6vw,3.8rem);line-height:1.05;letter-spacing:-0.04em;max-width:22ch}
.ss-h em{font-style:normal;color:var(--accent)}
.ss-lede{max-width:38rem;font-size:1.12rem;color:var(--ink-soft);margin:0}

/* top bar */
.ss-bar{display:flex;align-items:center;gap:8px;padding:14px clamp(16px,3vw,32px);border-bottom:1px solid transparent;transition:background .35s ease,border-color .35s ease}
.ss-bar.solid{background:color-mix(in srgb,var(--surface) 82%,transparent);-webkit-backdrop-filter:blur(16px) saturate(1.3);backdrop-filter:blur(16px) saturate(1.3);border-bottom-color:var(--line)}
.ss-wordmark{display:inline-flex;align-items:center;gap:8px;text-decoration:none;margin-right:auto;color:var(--ink)}
.ss-lockup{display:block;height:24px;aspect-ratio:3969/749;background:var(--ink);-webkit-mask:url(logo-lockup.svg) no-repeat center/contain;mask:url(logo-lockup.svg) no-repeat center/contain}
.ss-wm-mono{font-family:var(--mono);font-size:.64rem;letter-spacing:.32em;color:var(--ink-soft)}
.ss-bar-nav{display:flex;gap:2px;margin-right:12px;opacity:0;visibility:hidden;transition:opacity .35s ease,visibility 0s .35s}
.ss-bar.solid .ss-bar-nav{opacity:1;visibility:visible;transition:opacity .35s ease}
.ss-bar-nav a{text-decoration:none;font-size:.9rem;color:var(--ink-soft);padding:6px 12px;border-radius:999px;transition:color .2s ease;cursor:pointer}
.ss-bar-nav a:hover,.ss-bar-nav a.on{color:var(--ink)}
.ss-bar-nav a.on{background:var(--line)}
@media (max-width:700px){.ss-bar-nav{display:none}}
/* subpage header (demo-kit/sonder/header.js): fixed, always frosted, above the room */
.ss-bar{position:fixed;top:0;left:0;right:0;z-index:20;padding-top:calc(14px + env(safe-area-inset-top,0px));background:color-mix(in srgb,var(--surface) 82%,transparent);-webkit-backdrop-filter:blur(16px) saturate(1.3);backdrop-filter:blur(16px) saturate(1.3);border-bottom-color:var(--line)}
.ss-bar .ss-wordmark{min-width:0}
.ss-bar-tag{font:600 .64rem/1 var(--mono);letter-spacing:.2em;text-transform:uppercase;color:var(--ink-soft);padding:6px 10px;border:1px solid var(--line);border-radius:999px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ss-bar .ss-theme svg{width:17px;height:17px;fill:currentColor}
.ss-bar .ss-theme .moon{display:none}
:root[data-theme="dark"] .ss-bar .ss-theme .sun{display:none}
:root[data-theme="dark"] .ss-bar .ss-theme .moon{display:block}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .ss-bar .ss-theme .sun{display:none}:root:not([data-theme="light"]) .ss-bar .ss-theme .moon{display:block}}
@media (max-width:480px){.ss-bar-tag{display:none}}
.ss-has-bar{padding-top:calc(64px + env(safe-area-inset-top,0px))}

/* glass nav card */
.ss-card{display:block;width:180px;padding:13px 16px 15px;border-radius:16px;background:var(--glass);border:1px solid var(--glass-edge);box-shadow:var(--card-shadow);-webkit-backdrop-filter:blur(14px) saturate(1.3);backdrop-filter:blur(14px) saturate(1.3);color:var(--ink);text-decoration:none;transition:box-shadow .25s ease,border-color .25s ease;cursor:pointer}
.ss-card i{display:block;font-style:normal;font-family:var(--mono);font-size:.64rem;letter-spacing:.2em;color:var(--accent);margin-bottom:4px}
.ss-card strong{display:block;font-family:var(--display);font-weight:600;font-size:1.15rem;letter-spacing:-0.02em}
.ss-card span{display:block;margin-top:2px;font-size:.8rem;line-height:1.3;color:var(--ink-soft)}
.ss-card:hover,.ss-card:focus-visible{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent),var(--card-shadow);outline:none;color:var(--ink)}

/* project row */
.ss-item{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);align-items:stretch;border-radius:var(--radius);overflow:hidden;text-decoration:none;color:var(--ink);background:color-mix(in srgb,var(--bg-1) 55%,var(--surface));border:1px solid var(--line);transition:border-color .35s ease,transform .5s cubic-bezier(.2,.7,.2,1)}
.ss-item:hover{border-color:color-mix(in srgb,var(--accent) 50%,transparent);color:var(--ink)}
.ss-item-text{display:flex;flex-direction:column;padding:clamp(24px,3.4vw,44px);min-height:clamp(300px,34vw,440px)}
.ss-item-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:0;font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;color:var(--ink-faint)}
.ss-item-meta .n{color:var(--accent);margin-right:6px}
.ss-item-meta .ss-status{margin-left:auto;flex-shrink:0}
.ss-item h3{margin:auto 0 0;padding-top:40px;font-family:var(--display);font-size:clamp(2rem,3.6vw,3rem);line-height:1;letter-spacing:-0.04em;font-weight:600}
.ss-item-line{margin:14px 0 0;color:var(--ink-soft);max-width:30rem}
.ss-item-go{margin-top:28px;font-size:.92rem;font-weight:500;color:var(--ink);display:inline-flex;gap:8px}
.ss-item-go span{transition:transform .25s ease;color:var(--accent)}
.ss-item:hover .ss-item-go span{transform:translateX(4px)}
.ss-viz{position:relative;background:var(--viz-bg);border-left:1px solid var(--line);overflow:hidden;min-height:200px}
.ss-viz > *{position:absolute;inset:0;width:100%;height:100%;display:block;transition:transform .8s cubic-bezier(.2,.7,.2,1)}
.ss-item:hover .ss-viz > *{transform:scale(1.02)}
@media (max-width:980px){.ss-item{grid-template-columns:1fr}.ss-item .ss-viz{order:-1;aspect-ratio:16/9;border-left:0;border-bottom:1px solid var(--line)}.ss-item-text{min-height:0}.ss-item h3{padding-top:28px}}

/* principles */
.ss-principles{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(24px,3vw,44px);counter-reset:p}
.ss-principles li{border-top:1px solid var(--ink);padding-top:20px;counter-increment:p}
.ss-principles li::before{content:"0" counter(p);display:block;font-family:var(--mono);font-size:.7rem;letter-spacing:.14em;color:var(--accent);margin-bottom:14px}
.ss-principles h3{margin:0 0 8px;font-family:var(--display);font-size:1.3rem;letter-spacing:-0.02em;font-weight:600}
.ss-principles p{margin:0;color:var(--ink-soft);font-size:.96rem}
@media (max-width:980px){.ss-principles{grid-template-columns:1fr}}

/* definition */
.ss-define{margin:0;font-family:var(--mono);font-size:.86rem;color:var(--ink-soft);line-height:1.7}
.ss-define b{color:var(--ink);font-weight:500}
.ss-define i{color:var(--accent);font-style:normal}
.ss-define .meaning{font-family:var(--sans);font-size:1rem}

/* timeline */
.ss-timeline{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.ss-timeline li{display:grid;grid-template-columns:7.5rem 1fr;gap:2px 16px;padding:16px 0;border-bottom:1px solid var(--line)}
.ss-timeline .when{grid-row:span 2;font-family:var(--mono);font-size:.74rem;color:var(--ink-faint);padding-top:3px}
.ss-timeline .what{font-weight:500}
.ss-timeline .where{font-size:.9rem;color:var(--ink-soft)}

/* tools */
.ss-tools{display:flex;flex-wrap:wrap;gap:6px 16px;margin:0;font-size:.95rem;color:var(--ink-soft)}
.ss-tools span:first-child{font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint);padding-top:3px}

/* link row */
.ss-link-row{list-style:none;display:flex;flex-wrap:wrap;gap:8px 28px;margin:0;padding:24px 0 0;border-top:1px solid var(--line)}
.ss-link-row a{text-decoration:none;color:var(--ink-soft);transition:color .2s ease}
.ss-link-row a:hover{color:var(--ink)}
.ss-link-row span{color:var(--accent)}

/* footer */
.ss-foot{border-top:1px solid var(--line);padding-block:28px;color:var(--ink-faint);font-size:.84rem}
.ss-foot-row{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.ss-foot.demo{padding-block:22px 32px;font-size:13px}
.ss-foot.demo .ss-foot-row{justify-content:flex-start;gap:8px 16px}
.ss-foot.demo a{color:var(--ink-soft)}

/* scroll cue */
.ss-cue{width:24px;height:40px;border-radius:14px;border:1.5px solid var(--ink-faint);display:grid;justify-items:center;padding-top:7px}
.ss-cue span{width:3px;height:8px;border-radius:2px;background:var(--ink-soft);animation:ss-cue 1.8s ease-in-out infinite}
@keyframes ss-cue{0%{transform:translateY(0);opacity:1}70%{transform:translateY(12px);opacity:0}100%{opacity:0}}

/* demo-kit surfaces */
.ss-panel{background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--card-shadow);padding:clamp(16px,3vw,28px)}
.ss-drop{display:grid;place-items:center;gap:6px;text-align:center;padding:40px 16px;border:1.5px dashed var(--line);border-radius:14px;color:var(--ink-soft);cursor:pointer;transition:border-color .2s,color .2s}
.ss-drop.over,.ss-drop:hover{border-color:var(--accent);color:var(--ink)}
.ss-how{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.ss-how div{border-top:1px solid var(--line);padding-top:12px;color:var(--ink-soft);font-size:14px}
.ss-how b{display:block;color:var(--ink);font-weight:600;margin-bottom:4px}
.ss-note{font:12px/1.5 var(--mono);color:var(--ink-faint);margin:0}

/* reveal-on-scroll */
.ss-reveal{opacity:0;transform:translateY(18px);transition:opacity .9s cubic-bezier(.2,.7,.2,1),transform .9s cubic-bezier(.2,.7,.2,1)}
.ss-reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.ss-reveal{opacity:1;transform:none;transition:none}.ss-dot,.ss-cue span{animation:none}}

/* glossy surfaces */
.ss-gloss{background:var(--gloss-emerald);box-shadow:var(--gloss-shadow-soft);color:#f5f4f1;position:relative;overflow:hidden;isolation:isolate}
.ss-gloss.gold{background:var(--gloss-gold);color:#1a1206}
.ss-gloss.ink{background:var(--gloss-ink)}
.ss-gloss::after{content:"";position:absolute;inset:0;z-index:-1;background:var(--sheen);transform:translateX(-100%);transition:transform 1.2s cubic-bezier(.2,.7,.2,1);pointer-events:none}
.ss-gloss:hover::after{transform:translateX(100%)}
.ss-metal-text{background:var(--gloss-text-emerald);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.ss-metal-text.gold{background:var(--gloss-text-gold);-webkit-background-clip:text;background-clip:text}
@media (prefers-reduced-motion:reduce){.ss-btn::after,.ss-gloss::after{display:none}}

/* room: one tall 3D room the page scrolls through. Windows are openings cut into the walls (CSS mask); a single steady scenery image sits behind the whole room, so the view stays put while the walls move past. Vertical-only motion. */
:root{--tint-pct:10%}
:root[data-theme="dark"]{--tint-pct:16%}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--tint-pct:16%}}
.ss-room{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden;perspective:1000px;perspective-origin:50% 50%;background:var(--bg-2) center/cover no-repeat}
.ss-room-box{position:absolute;left:0;right:0;top:0;transform-style:preserve-3d;transform:translate3d(0,calc(var(--sy,0) * -1px),0);will-change:transform}
.ss-room-box i,.ss-room-box b{position:absolute;display:block}
.ss-room .back{left:0;right:0;top:0;transform:translateZ(-900px);background:var(--tint,linear-gradient(transparent,transparent)),linear-gradient(180deg,var(--bg-1) 0%,var(--surface) 50%,var(--bg-1) 100%);box-shadow:inset 0 0 0 1px var(--line)}
.ss-room .left,.ss-room .right{top:0;width:900px;box-shadow:inset 0 0 0 1px var(--line)}
.ss-room .left{left:0;transform-origin:left;transform:rotateY(90deg);background:var(--tint,linear-gradient(transparent,transparent)),linear-gradient(90deg,var(--bg-2) 0%,var(--surface) 100%)}
.ss-room .right{right:0;transform-origin:right;transform:rotateY(-90deg);background:var(--tint,linear-gradient(transparent,transparent)),linear-gradient(270deg,var(--bg-2) 0%,var(--surface) 100%)}
/* slabs: a solid box (top face, underside, front edge) */
.ss-room .slab{left:0;right:0;transform-style:preserve-3d}
.ss-room .slab .face{left:0;right:0;height:900px;transform-origin:top;transform:rotateX(-90deg)}
.ss-room .slab .top{top:0;background:linear-gradient(0deg,var(--bg-2),var(--surface));box-shadow:inset 0 0 0 1px var(--line)}
.ss-room .slab .under{background:linear-gradient(0deg,color-mix(in srgb,var(--bg-2) 80%,#000),var(--bg-2));box-shadow:inset 0 0 0 1px var(--line)}
.ss-room .slab .edge{left:0;right:0;top:0;background:linear-gradient(180deg,var(--surface) 0%,var(--bg-2) 55%,color-mix(in srgb,var(--bg-2) 85%,#000) 100%);box-shadow:inset 0 1px 0 rgba(255,255,255,.7),inset 0 -1px 0 var(--line),0 1px 0 var(--line)}
.ss-room .floor .top{background:repeating-linear-gradient(90deg,transparent 0 119px,var(--line) 119px 120px),repeating-linear-gradient(0deg,transparent 0 119px,var(--line) 119px 120px),linear-gradient(0deg,var(--bg-2),var(--surface))}
/* window frames, drawn on a twin face over the opening: recessed jamb, cross mullion, no glass fill */
.ss-room .frames{background:none!important;box-shadow:none!important}
.ss-room .win{border-radius:2px;background:linear-gradient(90deg,transparent calc(50% - 3px),var(--surface) calc(50% - 3px) calc(50% + 3px),transparent calc(50% + 3px)),linear-gradient(180deg,transparent calc(45% - 3px),var(--surface) calc(45% - 3px) calc(45% + 3px),transparent calc(45% + 3px));box-shadow:inset 0 0 0 12px var(--surface),inset 0 0 0 13px var(--line),inset 0 26px 30px -18px rgba(16,17,17,.35),inset 16px 0 22px -16px rgba(16,17,17,.2),0 0 0 1px var(--line),0 1px 0 1px rgba(255,255,255,.6)}
/* legibility: frosted backing for any text that floats over the room or photos */
.ss-legible{background:color-mix(in srgb,var(--surface) 78%,transparent);-webkit-backdrop-filter:blur(18px) saturate(1.2);backdrop-filter:blur(18px) saturate(1.2);border:1px solid color-mix(in srgb,var(--line) 70%,transparent);border-radius:24px;box-shadow:0 1px 0 rgba(255,255,255,.6) inset,0 20px 50px -30px rgba(16,17,17,.25)}
.ss-room-front{position:relative;z-index:1}
/* hero doorway: a recessed opening into a dim adjoining room (not a window) */
.ss-room .win.door{box-sizing:border-box;border:14px solid var(--surface);border-bottom:0;border-radius:2px 2px 0 0;background:linear-gradient(0deg,color-mix(in srgb,var(--surface) 60%,var(--bg-2)) 0 20px,transparent 20px),linear-gradient(180deg,color-mix(in srgb,var(--bg-2),#000 25%),var(--bg-2));box-shadow:inset 34px 0 30px -18px rgba(0,0,0,.45),inset -26px 0 26px -18px rgba(0,0,0,.3),inset 0 44px 36px -20px rgba(0,0,0,.55),inset 0 -26px 24px -20px rgba(0,0,0,.25),0 0 0 1px var(--line),0 0 0 15px var(--line)}
/* seal the corners: walls and slab faces overlap their neighbours by a few px so no hairline of the photo shows through the seams */
.ss-room .back{left:-6px;right:-6px}
.ss-room .left,.ss-room .right{width:906px}
.ss-room .slab{left:-6px;right:-6px}
.ss-room .slab .face{height:906px}
/* windows: frames stand ~6px off the wall (real 3D), a soft cast shadow instead of the white outer line, and a faint glass tint */
.ss-room .frames{transform-style:preserve-3d}
.ss-room .win:not(.door){transform:translateZ(6px);background:linear-gradient(90deg,transparent calc(50% - 3px),var(--surface) calc(50% - 3px) calc(50% + 3px),transparent calc(50% + 3px)),linear-gradient(180deg,transparent calc(45% - 3px),var(--surface) calc(45% - 3px) calc(45% + 3px),transparent calc(45% + 3px)),linear-gradient(155deg,rgba(255,255,255,.16),rgba(255,255,255,.04) 45%,rgba(200,214,220,.1));box-shadow:inset 0 0 0 12px var(--surface),inset 1px 1px 0 0 rgba(255,255,255,.55),inset 0 0 0 13px var(--line),inset 0 26px 30px -18px rgba(16,17,17,.35),inset 16px 0 22px -16px rgba(16,17,17,.2),inset 0 0 0 999px color-mix(in srgb,var(--surface) 7%,transparent),0 0 0 1px var(--line),2px 4px 10px rgba(16,17,17,.16)}

/* sealed focus room (<div id="room" data-room="sealed">), one calm box for the whole page: no photo, windows, doorway or tints */
.ss-room.sealed{background:var(--bg-2)}
.ss-room.sealed .back{background:linear-gradient(180deg,var(--bg-1) 0%,var(--surface) 50%,var(--bg-1) 100%);box-shadow:inset 0 0 0 1px var(--line),inset 0 0 120px -40px rgba(16,17,17,.18)}
.ss-room.sealed .left{background:linear-gradient(90deg,color-mix(in srgb,var(--bg-2) 88%,#000) 0%,var(--surface) 100%)}
.ss-room.sealed .right{background:linear-gradient(270deg,color-mix(in srgb,var(--bg-2) 88%,#000) 0%,var(--surface) 100%)}
.ss-room.sealed .slab .top,.ss-room.sealed .slab .under{box-shadow:inset 0 0 0 1px var(--line)}

/* focus panel, the content counterpart of .ss-legible: near-opaque, readable on any room, light and dark */
.ss-focus{background:color-mix(in srgb,var(--surface) 94%,transparent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--line);border-radius:20px;padding:clamp(20px,3.5vw,36px);box-shadow:0 1px 0 rgba(255,255,255,.5) inset,0 18px 44px -24px rgba(16,17,17,.28)}
:root[data-theme="dark"] .ss-focus{box-shadow:0 1px 0 rgba(255,255,255,.06) inset,0 18px 44px -24px rgba(0,0,0,.7)}