/* ============================================================
   Ryan Tao — portfolio shared styles
   ============================================================ */
:root{
  --bg:#0A0F16; --bg-2:#0D131C; --panel:#111A24; --panel-2:#0F1722; --bezel:#0B1118;
  --line:#1E2A38; --line-soft:#172230;
  --ink:#E9F0F6; --ink-dim:#9FB2C3; --ink-faint:#5F7385;
  --grid:rgba(118,150,176,.06);
  --cyan:#36E4D1; --cyan-deep:#16B9A9; --amber:#FFB14E; --green:#5FD08A;
  --radius:14px; --maxw:1140px;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:"IBM Plex Sans",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --disp:"Archivo",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.62;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:46px 46px;background-position:center top;
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
a{color:inherit;text-decoration:none}
img{max-width:100%}
::selection{background:var(--cyan);color:#04120F}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.mono{font-family:var(--mono)}
.eyebrow{font-family:var(--mono);font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}

/* ---------- nav ---------- */
header.nav{position:sticky;top:0;z-index:80;background:rgba(10,15,22,.74);backdrop-filter:blur(12px);border-bottom:1px solid var(--line-soft)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:13px 28px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{font-family:var(--mono);font-size:.82rem;letter-spacing:.14em;display:flex;align-items:center;gap:9px}
.brand .dot{width:9px;height:9px;border-radius:50%;background:var(--cyan);animation:pulse 2.6s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(54,228,209,.45)}70%{box-shadow:0 0 0 8px rgba(54,228,209,0)}100%{box-shadow:0 0 0 0 rgba(54,228,209,0)}}
.brand b{color:var(--cyan);font-weight:500}
nav.links{display:flex;align-items:center;gap:24px}
nav.links a{font-family:var(--mono);font-size:.78rem;letter-spacing:.05em;color:var(--ink-dim);transition:color .2s}
nav.links a:hover,nav.links a:focus-visible{color:var(--ink)}
.nav-cta{font-family:var(--mono);font-size:.78rem;color:#04120F!important;background:var(--cyan);padding:8px 15px;border-radius:8px;font-weight:500;transition:transform .15s,box-shadow .2s}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 6px 22px rgba(54,228,209,.25)}
.menu-btn{display:none;background:none;border:1px solid var(--line);color:var(--ink);width:42px;height:38px;border-radius:8px;font-size:1.1rem;cursor:pointer}
@media (max-width:820px){
  nav.links{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--bg-2);border-bottom:1px solid var(--line);max-height:0;overflow:hidden;transition:max-height .28s ease}
  nav.links.open{max-height:460px}
  nav.links a{padding:15px 28px;border-top:1px solid var(--line-soft);font-size:.85rem}
  nav.links .nav-cta{margin:14px 28px;text-align:center}
  .menu-btn{display:inline-flex;align-items:center;justify-content:center}
}

/* ---------- buttons / chips ---------- */
.btn{font-family:var(--mono);font-size:.82rem;padding:11px 17px;border-radius:9px;display:inline-flex;align-items:center;gap:9px;border:1px solid var(--line);color:var(--ink);transition:transform .15s,border-color .2s;cursor:pointer}
.btn:hover{transform:translateY(-2px);border-color:var(--cyan)}
.btn.solid{background:var(--cyan);color:#04120F;border-color:var(--cyan);font-weight:500}
.btn.solid:hover{box-shadow:0 8px 26px rgba(54,228,209,.28)}
.btn .ar{transition:transform .2s}.btn:hover .ar{transform:translate(2px,-2px)}
.btn.ghost{font-size:.78rem;padding:9px 14px}
.stack{display:flex;flex-wrap:wrap;gap:7px}
.chip{font-family:var(--mono);font-size:.7rem;color:var(--ink-dim);background:rgba(255,255,255,.022);border:1px solid var(--line-soft);padding:5px 11px;border-radius:20px}

/* ---------- hero (landing) ---------- */
.hero{position:relative;padding:74px 0 26px}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:center}
@media (max-width:940px){.hero-grid{grid-template-columns:1fr;gap:36px}}
.hero h1{font-family:var(--disp);font-weight:900;font-size:clamp(3rem,8.6vw,6.2rem);line-height:.9;letter-spacing:-.02em;margin:.5rem 0 0;text-transform:uppercase}
.hero h1 .l2{color:var(--cyan)}
.lede{font-size:clamp(1.04rem,1.55vw,1.24rem);color:var(--ink-dim);max-width:42ch;margin:22px 0 0;line-height:1.52}
.lede b{color:var(--ink);font-weight:600}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

/* portrait frame */
.portrait{position:relative;border:1px solid var(--line);border-radius:18px;background:radial-gradient(120% 120% at 30% 0%,#101a25,var(--bezel) 80%);padding:13px;box-shadow:0 30px 70px -30px rgba(0,0,0,.8),inset 0 0 0 1px rgba(255,255,255,.02);max-width:380px;margin-left:auto}
.portrait .pic{position:relative;border-radius:11px;overflow:hidden;border:1px solid #0d1620}
.portrait .pic img{display:block;width:100%;height:auto}
.portrait .pic::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(0deg,rgba(54,228,209,.05) 0,rgba(54,228,209,.05) 1px,transparent 2px,transparent 4px);mix-blend-mode:screen;opacity:.5;pointer-events:none;animation:scan 7s linear infinite}
@keyframes scan{0%{background-position:0 0}100%{background-position:0 220px}}
.portrait .cap{display:flex;justify-content:space-between;align-items:center;padding:11px 6px 3px;font-family:var(--mono);font-size:.62rem;letter-spacing:.12em;color:var(--ink-faint);text-transform:uppercase}
.portrait .cap b{color:var(--cyan);font-weight:500}

/* readout strip */
.strip{margin-top:44px;border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);display:grid;grid-template-columns:repeat(5,1fr)}
.strip .cell{padding:18px 16px;border-left:1px solid var(--line-soft)}
.strip .cell:first-child{border-left:none}
.strip .k{font-family:var(--mono);font-size:.6rem;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-faint)}
.strip .v{font-family:var(--disp);font-weight:700;font-size:1rem;margin-top:6px}
@media (max-width:840px){.strip{grid-template-columns:repeat(2,1fr)}.strip .cell:nth-child(odd){border-left:none}.strip .cell:nth-child(2){border-left:1px solid var(--line-soft)}}
@media (max-width:440px){.strip{grid-template-columns:1fr}.strip .cell{border-left:none;border-top:1px solid var(--line-soft)}.strip .cell:first-child{border-top:none}.strip .cell:nth-child(2){border-left:none}}

/* ---------- sections ---------- */
.section{padding:88px 0;scroll-margin-top:72px}
.section-head{display:flex;align-items:baseline;gap:18px;margin-bottom:42px;flex-wrap:wrap}
.section-head h2{font-family:var(--disp);font-weight:800;font-size:clamp(1.7rem,3.6vw,2.5rem);letter-spacing:-.01em;margin:0;text-transform:uppercase}
.section-head .idx{font-family:var(--mono);font-size:.74rem;letter-spacing:.16em;color:var(--cyan)}
.section-head .lead{font-family:var(--mono);font-size:.78rem;color:var(--ink-faint)}
.rule{height:1px;background:var(--line-soft);flex:1;min-width:30px}
.block-label{font-family:var(--mono);font-size:.64rem;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-faint);margin:30px 0 16px;display:flex;align-items:center;gap:12px}
.block-label::after{content:"";height:1px;flex:1;background:var(--line-soft)}

/* about */
.about-grid{display:grid;grid-template-columns:1.4fr .9fr;gap:46px}
@media (max-width:840px){.about-grid{grid-template-columns:1fr;gap:26px}}
.about p{color:var(--ink-dim);margin:0 0 18px;max-width:60ch}
.about p b{color:var(--ink);font-weight:600}
.sidebar{font-family:var(--mono);font-size:.8rem;color:var(--ink-dim);border-left:2px solid var(--cyan);padding-left:18px}
.sidebar-row{display:flex;justify-content:space-between;gap:14px;padding:9px 0;border-bottom:1px dashed var(--line-soft)}
.sidebar-row span:first-child{color:var(--ink-faint);text-transform:uppercase;letter-spacing:.12em;font-size:.64rem;align-self:center;white-space:nowrap}
.sidebar-row span:last-child{color:var(--ink);text-align:right}

/* ---------- featured project (landing) ---------- */
.feat{display:grid;grid-template-columns:.92fr 1.08fr;gap:0;border:1px solid var(--line);border-radius:18px;overflow:hidden;margin-bottom:24px;background:linear-gradient(180deg,var(--panel),var(--bg-2));transition:transform .25s,border-color .25s,box-shadow .25s}
.feat:hover{transform:translateY(-4px);border-color:#2a3c4f;box-shadow:0 30px 60px -34px rgba(0,0,0,.85)}
.feat.flip{grid-template-columns:1.08fr .92fr}
.feat.flip .feat-visual{order:2}
@media (max-width:820px){.feat,.feat.flip{grid-template-columns:1fr}.feat.flip .feat-visual{order:0}}
.feat-visual{position:relative;min-height:260px;background:#060B11;display:flex;align-items:center;justify-content:center;overflow:hidden;border-right:1px solid var(--line)}
.feat.flip .feat-visual{border-right:none;border-left:1px solid var(--line)}
@media (max-width:820px){.feat-visual,.feat.flip .feat-visual{border:none;border-bottom:1px solid var(--line)}}
.feat-visual img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.feat-rank{position:absolute;top:14px;left:14px;z-index:3;font-family:var(--mono);font-size:.62rem;letter-spacing:.16em;color:var(--ink);background:rgba(10,15,22,.7);border:1px solid var(--line);padding:4px 9px;border-radius:6px;text-transform:uppercase}
.feat-body{padding:30px 32px}
@media (max-width:520px){.feat-body{padding:24px}}
.feat-kicker{font-family:var(--mono);font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;margin-bottom:12px}
.feat-kicker.amber{color:var(--amber)}.feat-kicker.cyan{color:var(--cyan)}
.feat h3{font-family:var(--disp);font-weight:800;font-size:clamp(1.5rem,3.4vw,2.1rem);letter-spacing:-.01em;margin:0 0 8px}
.feat .role{font-family:var(--mono);font-size:.74rem;color:var(--ink-dim);margin-bottom:14px}
.feat p{color:var(--ink-dim);font-size:.96rem;margin:0 0 18px;line-height:1.5}
.feat .go{font-family:var(--mono);font-size:.8rem;color:var(--cyan);display:inline-flex;align-items:center;gap:8px}
.feat:hover .go .ar{transform:translateX(3px)}
.feat .go .ar{transition:transform .2s}
.feat .badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.feat .badge{font-family:var(--mono);font-size:.64rem;letter-spacing:.06em;color:var(--ink-dim);border:1px solid var(--line-soft);padding:4px 9px;border-radius:6px}

/* visual fallback graphic for slingshot */
.pcb-mini{width:90%;max-width:330px}

/* ---------- compact cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media (max-width:900px){.cards{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.cards{grid-template-columns:1fr}}
.card{position:relative;display:block;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(180deg,var(--panel),var(--bg-2));padding:22px;overflow:hidden;transition:transform .22s,border-color .22s,box-shadow .22s}
.card::before{content:"";position:absolute;left:0;top:0;height:100%;width:3px;background:var(--cyan);transform:scaleY(0);transform-origin:top;transition:transform .26s}
.card:hover{transform:translateY(-4px);border-color:#27384a;box-shadow:0 24px 50px -28px rgba(0,0,0,.85)}
.card:hover::before{transform:scaleY(1)}
.card .ctype{display:flex;justify-content:space-between;gap:12px;margin-bottom:13px}
.card .tag{font-family:var(--mono);font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);border:1px solid rgba(54,228,209,.3);padding:3px 8px;border-radius:6px}
.card .when{font-family:var(--mono);font-size:.64rem;color:var(--ink-faint)}
.card h4{font-family:var(--disp);font-weight:700;font-size:1.2rem;margin:0 0 4px}
.card .org{font-family:var(--mono);font-size:.7rem;color:var(--ink-dim);margin-bottom:12px}
.card p{color:var(--ink-dim);font-size:.92rem;margin:0 0 15px;line-height:1.5}
.card .go{font-family:var(--mono);font-size:.74rem;color:var(--cyan)}

/* ---------- skills ---------- */
.skill-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media (max-width:760px){.skill-grid{grid-template-columns:1fr}}
.skill-block{border:1px solid var(--line-soft);border-radius:var(--radius);padding:20px 22px;background:var(--bg-2)}
.skill-block h4{font-family:var(--mono);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--cyan);margin:0 0 14px}
.skill-block .stack .chip{font-size:.72rem;padding:6px 12px}

/* ---------- education ---------- */
.edu{display:grid;grid-template-columns:1.25fr .75fr;gap:22px}
@media (max-width:840px){.edu{grid-template-columns:1fr}}
.edu-item{border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:var(--bg-2)}
.edu-item .top{display:flex;justify-content:space-between;align-items:baseline;gap:14px;flex-wrap:wrap}
.edu-item h3{font-family:var(--disp);font-weight:700;font-size:1.26rem;margin:0}
.edu-item .yr{font-family:var(--mono);font-size:.72rem;color:var(--cyan)}
.edu-item .sub{font-family:var(--mono);font-size:.74rem;color:var(--ink-dim);margin:8px 0 4px}
.edu-item .meta{color:var(--ink-dim);font-size:.92rem;margin-top:10px}
.courses{margin-top:16px}
.courses .lbl{font-family:var(--mono);font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:10px}
.courses .stack .chip{font-size:.68rem}

/* ---------- contact ---------- */
.contact-card{border:1px solid var(--line);border-radius:20px;padding:46px 40px;background:radial-gradient(120% 140% at 50% 0%,#0f1c22,var(--bg-2));text-align:center}
.contact-card h2{font-family:var(--disp);font-weight:900;font-size:clamp(2rem,5vw,3.1rem);text-transform:uppercase;letter-spacing:-.01em;margin:0 0 12px}
.contact-card p{color:var(--ink-dim);max-width:48ch;margin:0 auto 26px}
.contact-row{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}
.contact-meta{margin-top:30px;font-family:var(--mono);font-size:.72rem;color:var(--ink-faint);display:flex;flex-wrap:wrap;justify-content:center;gap:8px 22px}
.contact-meta a{color:var(--ink-dim);transition:color .2s}.contact-meta a:hover{color:var(--cyan)}

/* ---------- footer ---------- */
footer.foot{border-top:1px solid var(--line-soft);padding:28px 0;margin-top:10px}
.foot-inner{max-width:var(--maxw);margin:0 auto;padding:0 28px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font-family:var(--mono);font-size:.7rem;color:var(--ink-faint)}
.foot-inner a{color:var(--ink-dim)}.foot-inner a:hover{color:var(--cyan)}
.foot-inner .trace{flex:1;min-width:120px;height:1px;background:linear-gradient(90deg,transparent,var(--cyan),transparent);opacity:.5}

/* ============================================================
   PROJECT PAGES
   ============================================================ */
.pnav{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.back{font-family:var(--mono);font-size:.78rem;color:var(--ink-dim);display:inline-flex;align-items:center;gap:8px;transition:color .2s}
.back:hover{color:var(--cyan)}.back .ar{transition:transform .2s}.back:hover .ar{transform:translateX(-3px)}

.phero{padding:54px 0 30px}
.phero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:center}
@media (max-width:940px){.phero-grid{grid-template-columns:1fr;gap:32px}}
.pkicker{font-family:var(--mono);font-size:.7rem;letter-spacing:.18em;text-transform:uppercase}
.pkicker.amber{color:var(--amber)}.pkicker.cyan{color:var(--cyan)}
.phero h1{font-family:var(--disp);font-weight:900;font-size:clamp(2.2rem,5.6vw,3.6rem);line-height:1;letter-spacing:-.02em;margin:14px 0 8px;text-transform:uppercase}
.phero .psub{font-family:var(--mono);font-size:.82rem;color:var(--ink-dim);margin-bottom:20px}
.phero p.lead-p{color:var(--ink-dim);font-size:1.05rem;max-width:60ch;margin:0 0 24px}
.phero p.lead-p b{color:var(--ink);font-weight:600}
.phero-visual{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#060B11;box-shadow:0 30px 70px -34px rgba(0,0,0,.85)}
.phero-visual img{display:block;width:100%;height:auto;cursor:zoom-in}
.phero-visual .vcap{font-family:var(--mono);font-size:.62rem;color:var(--ink-faint);padding:10px 14px;letter-spacing:.04em;border-top:1px solid var(--line-soft)}

.domains{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:6px}
.domain{font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);border:1px solid rgba(54,228,209,.3);background:rgba(54,228,209,.05);padding:5px 11px;border-radius:7px}
.domain.amber{color:var(--amber);border-color:rgba(255,177,78,.3);background:rgba(255,177,78,.05)}

.status-row{display:flex;flex-wrap:wrap;gap:10px;margin:4px 0 6px}
.status{font-family:var(--mono);font-size:.7rem;color:var(--ink-dim);border:1px solid var(--line);border-radius:20px;padding:6px 13px;display:inline-flex;align-items:center;gap:8px}
.status i{width:7px;height:7px;border-radius:50%;display:inline-block}
.status i.g{background:var(--green);box-shadow:0 0 8px var(--green)}.status i.c{background:var(--cyan)}.status i.a{background:var(--amber)}

.psection{padding:46px 0;border-top:1px solid var(--line-soft)}
.psection h2{font-family:var(--disp);font-weight:800;font-size:clamp(1.4rem,3vw,2rem);letter-spacing:-.01em;margin:0 0 6px;text-transform:uppercase}
.psection .ph-eyebrow{font-family:var(--mono);font-size:.66rem;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:10px}
.psection p{color:var(--ink-dim);max-width:72ch}
.psection p b{color:var(--ink);font-weight:600}

/* signal/power chain (reused) */
.chain{display:flex;align-items:stretch;gap:0;margin:8px 0}
.stage{flex:1 1 0;min-width:0;border:1px solid var(--line);border-radius:11px;background:var(--panel-2);padding:14px 13px;text-align:center;opacity:0;transform:translateY(10px);transition:opacity .5s ease,transform .5s ease,border-color .25s,box-shadow .25s;transition-delay:calc(var(--d,0)*95ms)}
.chain.in .stage{opacity:1;transform:none}
.stage:hover{border-color:var(--cyan);box-shadow:0 0 0 1px var(--cyan),0 14px 30px -18px rgba(54,228,209,.5)}
.chain.amber .stage:hover{border-color:var(--amber);box-shadow:0 0 0 1px var(--amber),0 14px 30px -18px rgba(255,177,78,.5)}
.stage .st-k{font-family:var(--mono);font-size:.58rem;letter-spacing:.14em;color:var(--cyan);text-transform:uppercase;margin-bottom:7px}
.chain.amber .stage .st-k{color:var(--amber)}
.stage .st-t{font-family:var(--disp);font-weight:700;font-size:.92rem;line-height:1.2;margin-bottom:5px}
.stage .st-s{font-family:var(--mono);font-size:.64rem;color:var(--ink-faint);line-height:1.35}
.conn{flex:0 0 26px;display:flex;align-items:center;justify-content:center}
.conn .line{height:2px;width:100%;background:linear-gradient(90deg,transparent,var(--cyan),transparent);background-size:200% 100%;animation:flowX 1.7s linear infinite;opacity:.65}
.chain.amber .conn .line{background:linear-gradient(90deg,transparent,var(--amber),transparent);background-size:200% 100%}
@keyframes flowX{0%{background-position:160% 0}100%{background-position:-160% 0}}
@media (max-width:760px){
  .chain{flex-direction:column}
  .conn{flex:0 0 24px;width:100%}
  .conn .line{height:100%;width:2px;background:linear-gradient(180deg,transparent,var(--cyan),transparent);background-size:100% 200%;animation:flowY 1.7s linear infinite}
  .chain.amber .conn .line{background:linear-gradient(180deg,transparent,var(--amber),transparent);background-size:100% 200%}
  @keyframes flowY{0%{background-position:0 160%}100%{background-position:0 -160%}}
}

/* spec table */
.spec{border:1px solid var(--line-soft);border-radius:12px;overflow:hidden}
.spec .srow{display:flex;justify-content:space-between;gap:14px;padding:11px 16px;font-family:var(--mono);font-size:.8rem;border-bottom:1px solid var(--line-soft)}
.spec .srow:last-child{border-bottom:none}
.spec .srow:nth-child(odd){background:rgba(255,255,255,.014)}
.spec .srow .sk{color:var(--ink-faint);text-transform:uppercase;letter-spacing:.06em;font-size:.66rem;align-self:center}
.spec .srow .sv{color:var(--amber);text-align:right}
.spec.cyan .srow .sv{color:var(--cyan)}

/* phases */
.phases{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:760px){.phases{grid-template-columns:1fr}}
.phase{border:1px solid var(--line-soft);border-radius:11px;padding:16px;background:var(--panel-2)}
.phase .pn{font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;color:var(--amber);margin-bottom:8px}
.phase .pt{font-family:var(--disp);font-weight:700;font-size:1rem;margin-bottom:4px}
.phase .pd{font-size:.86rem;color:var(--ink-dim);line-height:1.45}

/* contribution tiles */
.contrib{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media (max-width:760px){.contrib{grid-template-columns:1fr}}
.ctile{border:1px solid var(--line-soft);border-radius:12px;padding:18px 19px;background:var(--panel-2)}
.ctile h5{font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);margin:0 0 12px}
.ctile.amber h5{color:var(--amber)}
.ctile ul{margin:0;padding:0;list-style:none}
.ctile li{position:relative;padding-left:17px;font-size:.88rem;color:var(--ink-dim);line-height:1.5;margin-bottom:8px}
.ctile li:last-child{margin-bottom:0}
.ctile li::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:1px;background:var(--cyan)}
.ctile.amber li::before{background:var(--amber)}
.ctile li b{color:var(--ink);font-weight:600}

/* sensor suite */
.suite{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:760px){.suite{grid-template-columns:1fr 1fr}}
@media (max-width:460px){.suite{grid-template-columns:1fr}}
.sensor{border:1px solid var(--line-soft);border-radius:11px;padding:14px;background:var(--panel-2);transition:border-color .2s,transform .2s}
.sensor:hover{border-color:var(--cyan);transform:translateY(-3px)}
.sensor .part{font-family:var(--mono);font-size:.82rem;color:var(--ink);font-weight:600}
.sensor .bus{font-family:var(--mono);font-size:.6rem;color:var(--amber);letter-spacing:.1em;float:right;border:1px solid rgba(255,177,78,.3);border-radius:5px;padding:1px 6px}
.sensor .role{font-size:.82rem;color:var(--ink-dim);margin-top:8px;clear:both}
.sensor.mcu{border-color:var(--cyan);background:linear-gradient(180deg,rgba(54,228,209,.08),var(--panel-2));grid-column:1/-1}
.sensor.mcu .part{color:var(--cyan)}
.ble{display:flex;align-items:center;gap:12px;margin-top:16px;font-family:var(--mono);font-size:.74rem;color:var(--ink-dim)}
.ble .ant{position:relative;width:34px;height:22px;flex:0 0 auto}
.ble .ant .ring{position:absolute;left:0;top:50%;width:14px;height:14px;border:1.5px solid var(--cyan);border-radius:50%;transform:translateY(-50%);opacity:0;animation:ble 2.2s ease-out infinite}
.ble .ant .ring:nth-child(2){animation-delay:.7s}.ble .ant .ring:nth-child(3){animation-delay:1.4s}
@keyframes ble{0%{transform:translateY(-50%) scale(.4);opacity:.9}100%{transform:translateY(-50%) scale(2.4);opacity:0}}

.parts{font-family:var(--mono);font-size:.74rem;color:var(--ink-dim);line-height:2}
.parts b{color:var(--cyan);font-weight:500}

/* two-column layout helper */
.two{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start}
@media (max-width:860px){.two{grid-template-columns:1fr}}

/* ---------- gallery + lightbox ---------- */
.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media (max-width:680px){.gallery{grid-template-columns:1fr}}
.shot{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--panel-2);transition:transform .2s,border-color .2s}
.shot:hover{transform:translateY(-3px);border-color:var(--cyan)}
.shot img{display:block;width:100%;height:auto;cursor:zoom-in}
.shot .figcap{font-family:var(--mono);font-size:.68rem;color:var(--ink-dim);padding:11px 14px;border-top:1px solid var(--line-soft);line-height:1.45}
.shot .figcap b{color:var(--cyan);font-weight:500}
.shot.wide{grid-column:1/-1}

.videos{display:flex;flex-wrap:wrap;gap:10px}
.vlink{font-family:var(--mono);font-size:.78rem;color:var(--ink);border:1px solid var(--line);border-radius:9px;padding:10px 15px;display:inline-flex;align-items:center;gap:9px;transition:transform .15s,border-color .2s}
.vlink:hover{transform:translateY(-2px);border-color:var(--amber)}
.vlink .pl{color:var(--amber)}

.lightbox{position:fixed;inset:0;z-index:200;background:rgba(5,8,12,.93);backdrop-filter:blur(6px);display:none;align-items:center;justify-content:center;flex-direction:column;padding:30px;cursor:zoom-out}
.lightbox.open{display:flex}
.lightbox img{max-width:94vw;max-height:84vh;border-radius:10px;border:1px solid var(--line);box-shadow:0 30px 80px -20px rgba(0,0,0,.9)}
.lightbox .lcap{font-family:var(--mono);font-size:.74rem;color:var(--ink-dim);margin-top:16px;max-width:70ch;text-align:center}
.lightbox .lclose{position:absolute;top:22px;right:26px;font-family:var(--mono);font-size:.8rem;color:var(--ink-dim);border:1px solid var(--line);border-radius:8px;padding:7px 13px;cursor:pointer;background:rgba(10,15,22,.6)}
.lightbox .lclose:hover{color:var(--ink);border-color:var(--cyan)}

.nextnote{font-family:var(--mono);font-size:.74rem;color:var(--amber);margin-top:8px;border-top:1px dashed var(--line-soft);padding-top:16px}
.nextnote b{color:var(--ink);font-weight:600}

/* reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal,.stage{opacity:1;transform:none}}
.fade-up{opacity:0;transform:translateY(16px);animation:fadeUp .8s ease forwards}
.d1{animation-delay:.05s}.d2{animation-delay:.18s}.d3{animation-delay:.32s}.d4{animation-delay:.46s}.d5{animation-delay:.6s}
@keyframes fadeUp{to{opacity:1;transform:none}}

/* ============================================================
   ADD-ONS: video embeds, honors, 3D render
   ============================================================ */
.vgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media (max-width:760px){.vgrid{grid-template-columns:1fr}}
.vembed{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--panel-2)}
.vembed .frame{position:relative;width:100%;aspect-ratio:16/9;background:#060B11}
.vembed .frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.vembed .vlabel{font-family:var(--mono);font-size:.72rem;color:var(--ink-dim);padding:11px 14px;border-top:1px solid var(--line-soft);line-height:1.45}
.vembed .vlabel b{color:var(--amber);font-weight:500}

.honors{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:22px}
@media (max-width:760px){.honors{grid-template-columns:1fr}}
.honor{border:1px solid var(--line);border-radius:12px;padding:20px;background:var(--bg-2);transition:transform .2s,border-color .2s}
.honor:hover{transform:translateY(-3px);border-color:#27384a}
.honor .h-k{font-family:var(--mono);font-size:.6rem;letter-spacing:.16em;text-transform:uppercase;color:var(--amber);margin-bottom:10px}
.honor h4{font-family:var(--disp);font-weight:700;font-size:1.02rem;margin:0 0 7px;line-height:1.25}
.honor p{font-family:var(--mono);font-size:.7rem;color:var(--ink-dim);margin:0;line-height:1.55}

.iso-ring{transform-box:fill-box;transform-origin:center;animation:isoRing 2.6s ease-out infinite}
@keyframes isoRing{0%{opacity:.85;transform:scale(.35)}100%{opacity:0;transform:scale(2.3)}}
@media (prefers-reduced-motion:reduce){.iso-ring{display:none}}