/* ============================================================
   SCHUMANN RESONANCE LIVE — Premium Dashboard System v4.0
   Modern mission-control aesthetic · glass · aurora depth
   ============================================================ */

:root{
  --bg:#05070D;
  --bg-2:#070B14;
  --bg-3:#0B1120;
  --card:linear-gradient(180deg,rgba(17,24,44,.72),rgba(10,15,28,.78));
  --card-hover:linear-gradient(180deg,rgba(23,32,58,.82),rgba(13,19,36,.86));
  --glass:rgba(13,19,36,.55);
  --line:rgba(148,183,255,.13);
  --line-2:rgba(148,183,255,.28);
  --ink:#E9EFFC;
  --ink-dim:#93A5C9;
  --ink-faint:#5B6B8F;
  --cyan:#4CC9FF;
  --cyan-2:#2EA8E8;
  --violet:#8B7CFF;
  --mint:#3DFFB8;
  --amber:#FFC86B;
  --coral:#FF5C7A;
  --orange:#FF9354;
  --grad-accent:linear-gradient(92deg,#4CC9FF,#8B7CFF);
  --grad-btn:linear-gradient(92deg,#2BB8F0,#7C6CFF);
  --r-xl:20px;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:9px;
  --shadow-card:0 10px 40px rgba(2,6,18,.45);
  --glow-cyan:0 0 24px rgba(76,201,255,.28);
  --mono:'DM Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:'Inter',system-ui,-apple-system,sans-serif;
  --disp:'Space Grotesk','Inter',sans-serif;
  --ease:cubic-bezier(.22,.8,.24,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--sans);font-size:16px;line-height:1.6;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
/* aurora ambient depth */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(52% 42% at 82% -6%,rgba(124,108,255,.16),transparent 62%),
    radial-gradient(46% 38% at 8% 12%,rgba(76,201,255,.12),transparent 60%),
    radial-gradient(40% 34% at 55% 108%,rgba(61,255,184,.07),transparent 65%);
}
/* fine grid */
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(148,183,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(148,183,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(75% 60% at 50% 0%,#000 0%,transparent 100%);
  -webkit-mask-image:radial-gradient(75% 60% at 50% 0%,#000 0%,transparent 100%);
}
::selection{background:rgba(76,201,255,.32);color:#fff}
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:#04060C}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#1E2C4C,#152038);border-radius:8px;border:2px solid #04060C}
::-webkit-scrollbar-thumb:hover{background:#2E4570}

.mono{font-family:var(--mono)}
.sr-only{position:absolute!important;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{position:fixed;top:-60px;left:14px;z-index:300;background:var(--cyan);color:#031520;padding:.5rem 1rem;font-size:.72rem;letter-spacing:.08em;border-radius:8px;transition:top .25s}
.skip-link:focus{top:12px}

.shell{width:min(1260px,100% - 2.5rem);margin-inline:auto}
.shell-narrow{width:min(840px,100% - 2.5rem);margin-inline:auto}
a{color:var(--cyan)}

/* ---------- Earth canvas + overlays ---------- */
#earth-canvas{position:fixed;inset:0;width:100vw;height:100vh;z-index:0;pointer-events:none;display:block}
#grain{position:fixed;inset:-50%;z-index:1;pointer-events:none;opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
  animation:grain 9s steps(10) infinite;}
@keyframes grain{
  0%,100%{transform:translate(0,0)}10%{transform:translate(-4%,-6%)}20%{transform:translate(-8%,4%)}
  30%{transform:translate(6%,-8%)}40%{transform:translate(-3%,10%)}50%{transform:translate(-8%,-4%)}
  60%{transform:translate(9%,0)}70%{transform:translate(0,8%)}80%{transform:translate(-7%,0)}90%{transform:translate(8%,4%)}
}
#vignette{position:fixed;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(120% 85% at 76% 4%,transparent 42%,rgba(5,7,13,.55) 100%),
    linear-gradient(180deg,rgba(5,7,13,.42) 0%,transparent 15%,transparent 46%,rgba(5,7,13,.92) 100%);}
main,footer{position:relative;z-index:2}

/* ---------- Loader ---------- */
#loader{position:fixed;inset:0;z-index:400;display:grid;place-items:center;background:radial-gradient(60% 60% at 50% 40%,#0A1122 0%,#05070D 100%);transition:opacity .7s var(--ease),visibility .7s}
#loader.done{opacity:0;visibility:hidden}
.loader-core{display:grid;justify-items:center;gap:1.1rem;text-align:center}
.loader-core p{font-family:var(--mono);font-size:.64rem;letter-spacing:.34em;color:var(--ink-dim);margin:0}
.loader-orbit{transform-origin:32px 32px;animation:spin 1.6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.loader-bar{width:210px;height:2px;background:rgba(148,183,255,.14);border-radius:2px;overflow:hidden}
.loader-bar span{display:block;height:100%;width:40%;border-radius:2px;background:var(--grad-accent);animation:loadslide 1.1s var(--ease) infinite;box-shadow:var(--glow-cyan)}
@keyframes loadslide{0%{transform:translateX(-110%)}100%{transform:translateX(530%)}}

/* ---------- Live dot ---------- */
.live-dot{width:7px;height:7px;border-radius:50%;background:var(--mint);display:inline-block;flex:none;box-shadow:0 0 0 0 rgba(61,255,184,.5);animation:pulse 2.2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(61,255,184,.5)}70%{box-shadow:0 0 0 8px rgba(61,255,184,0)}100%{box-shadow:0 0 0 0 rgba(61,255,184,0)}}

/* ============================================================
   HEADER — floating glass capsule
   ============================================================ */
.topbar{
  position:fixed;top:0;left:0;right:0;z-index:100;padding:1rem 0 .6rem;
  background:linear-gradient(180deg,rgba(5,7,13,.88),rgba(5,7,13,.4) 70%,transparent);
  transition:padding .3s;
}
.topbar.scrolled{padding:.55rem 0 .55rem}
.topbar-inner{
  display:flex;align-items:center;gap:1.4rem;
  background:var(--glass);border:1px solid var(--line);border-radius:18px;
  padding:.55rem .9rem;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:0 8px 32px rgba(2,6,18,.4);
  transition:box-shadow .3s,border-color .3s;
}
.topbar.scrolled .topbar-inner{border-color:var(--line-2);box-shadow:0 12px 40px rgba(2,6,18,.55)}

.brand{display:flex;align-items:center;gap:.7rem;text-decoration:none;color:var(--ink);flex:none}
.brand-text{font-family:var(--disp);font-size:.92rem;font-weight:700;letter-spacing:.16em;color:var(--ink);line-height:1.2}
.brand-text b{display:block;font-size:.56rem;font-weight:600;letter-spacing:.44em;background:var(--grad-accent);-webkit-background-clip:text;background-clip:text;color:transparent;margin-top:.1rem}

.topnav{margin-left:auto;display:flex;align-items:center;gap:.15rem}
.topnav a{
  color:var(--ink-dim);text-decoration:none;font-size:.8rem;font-weight:500;letter-spacing:.02em;
  padding:.44rem .74rem;border-radius:9px;border:1px solid transparent;transition:.2s;
}
.topnav a:hover{color:var(--ink);background:rgba(148,183,255,.07)}
.topnav a.active{color:var(--cyan);background:rgba(76,201,255,.1);border-color:rgba(76,201,255,.22)}

.topbar-actions{display:flex;align-items:center;gap:.55rem;flex:none}
.nav-cta{
  font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;text-decoration:none;color:var(--cyan)!important;
  border:1px solid rgba(76,201,255,.35);border-radius:9px;padding:.44rem .8rem;transition:.2s;background:rgba(76,201,255,.06);
}
.nav-cta:hover{background:rgba(76,201,255,.16);box-shadow:var(--glow-cyan)}

.lang-wrap{position:relative}
.lang-btn{
  display:inline-flex;align-items:center;gap:.42rem;cursor:pointer;
  background:rgba(148,183,255,.05);border:1px solid var(--line-2);border-radius:9px;
  color:var(--ink-dim);font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;
  padding:.44rem .62rem;transition:.2s;
}
.lang-btn:hover{color:var(--ink);border-color:var(--cyan)}
.lang-btn .chev{transition:transform .25s}
.lang-btn[aria-expanded="true"] .chev{transform:rotate(180deg)}
.lang-menu{
  position:absolute;top:calc(100% + 10px);right:0;width:212px;max-height:340px;overflow:auto;z-index:120;
  background:rgba(10,15,28,.92);border:1px solid var(--line-2);border-radius:14px;padding:.35rem;
  backdrop-filter:blur(20px);box-shadow:0 20px 50px rgba(2,6,18,.6);
  list-style:none;margin:0;display:none;
}
.lang-menu.open{display:block;animation:langin .22s var(--ease)}
@keyframes langin{from{opacity:0;transform:translateY(-6px) scale(.98)}to{opacity:1;transform:none}}
.lang-menu li{display:flex;align-items:center;justify-content:space-between;gap:1rem;cursor:pointer;padding:.48rem .62rem;border-radius:9px;font-size:.82rem;color:var(--ink-dim);transition:.15s}
.lang-menu li i{font-style:normal;font-family:var(--mono);font-size:.58rem;color:var(--ink-faint);letter-spacing:.1em}
.lang-menu li:hover{background:rgba(76,201,255,.08);color:var(--ink)}
.lang-menu li.selected{color:var(--cyan);background:rgba(76,201,255,.1)}
.lang-menu li.selected i{color:var(--cyan)}

.nav-toggle{display:none;background:none;border:0;cursor:pointer;width:32px;height:24px;position:relative;z-index:120}
.nav-toggle span{position:absolute;left:4px;right:4px;height:2px;background:var(--ink);border-radius:2px;transition:.3s var(--ease)}
.nav-toggle span:nth-child(1){top:5px}.nav-toggle span:nth-child(2){top:11px}.nav-toggle span:nth-child(3){top:17px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){top:11px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){top:11px;transform:rotate(-45deg)}

/* ============================================================
   HERO — dashboard command center
   ============================================================ */
.hero{min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;padding:8.5rem 0 0}
.hero .shell{padding-bottom:2.8rem}
.eyebrow{
  font-family:var(--mono);font-size:.62rem;letter-spacing:.28em;color:var(--ink-dim);
  display:inline-flex;align-items:center;gap:.55rem;margin:0 0 1.9rem;
  border:1px solid var(--line-2);border-radius:999px;padding:.5rem 1.1rem;
  background:var(--glass);backdrop-filter:blur(10px);
}
h1{
  font-family:var(--disp);font-weight:700;
  font-size:clamp(2.9rem,7.2vw,5.6rem);line-height:1.03;letter-spacing:-.03em;
  margin:0 0 1.9rem;color:var(--ink);
}
h1 em{
  font-style:normal;background:var(--grad-accent);-webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 0 26px rgba(124,108,255,.35));
}
.hero-cols{display:grid;grid-template-columns:minmax(0,600px) auto;gap:2.5rem;align-items:end}
.lede{font-size:clamp(1rem,1.3vw,1.12rem);color:var(--ink-dim);margin:0;line-height:1.75;max-width:580px}
.lede strong{color:var(--amber);font-weight:600}
.hero-actions{display:flex;gap:.85rem;flex-wrap:wrap;padding-bottom:.5rem}

.btn{
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--disp);font-weight:600;font-size:.88rem;letter-spacing:.01em;text-decoration:none;
  padding:.85rem 1.55rem;border-radius:13px;cursor:pointer;border:1px solid transparent;
  transition:transform .22s var(--ease),box-shadow .22s,background .22s,border-color .22s;
}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--grad-btn);color:#fff;box-shadow:0 8px 30px rgba(58,150,255,.35),inset 0 1px 0 rgba(255,255,255,.25)}
.btn-primary .arr{transition:transform .22s var(--ease)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 40px rgba(58,150,255,.5),inset 0 1px 0 rgba(255,255,255,.25)}
.btn-primary:hover .arr{transform:translateX(4px)}
.btn-ghost{background:var(--glass);color:var(--ink);border-color:var(--line-2);backdrop-filter:blur(10px)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px);box-shadow:var(--glow-cyan)}
.btn-mini{font-family:var(--mono);font-size:.62rem;letter-spacing:.08em;padding:.42rem .8rem;background:rgba(148,183,255,.06);border:1px solid var(--line-2);border-radius:8px;color:var(--ink-dim)}
.btn-mini:hover{color:var(--cyan);border-color:var(--cyan)}

/* hero KPI bento */
.hero-strip{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(8,12,22,.55),rgba(5,7,13,.85));
  backdrop-filter:blur(16px);position:relative;z-index:2;
}
.hero-strip-inner{display:grid;grid-template-columns:repeat(6,1fr);gap:1px;background:var(--line)}
.hs-item{display:flex;flex-direction:column;gap:.25rem;padding:1rem 1.3rem;background:rgba(6,9,17,.5);position:relative;transition:background .25s}
.hs-item:hover{background:rgba(12,18,34,.75)}
.hs-item dt{font-family:var(--mono);font-size:.54rem;letter-spacing:.24em;color:var(--ink-faint);text-transform:uppercase}
.hs-item dd{margin:0;font-family:var(--mono);font-size:1.5rem;color:var(--cyan);line-height:1.1;text-shadow:0 0 18px rgba(76,201,255,.4)}
.hs-item small{font-size:.68rem;color:var(--ink-faint);margin-left:.25rem}
.hs-status dd{color:var(--mint);display:flex;align-items:center;font-size:1rem;letter-spacing:.06em;text-shadow:0 0 18px rgba(61,255,184,.4)}

/* ============================================================
   QUICK ANSWER — featured glass banner
   ============================================================ */
.qa{padding:2.4rem 0 0}
.qa-box{
  border:1px solid var(--line-2);border-radius:var(--r-xl);padding:1.7rem 1.9rem;position:relative;
  background:var(--card);backdrop-filter:blur(18px);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.qa-box::before{content:"";position:absolute;inset:0 0 auto 0;height:1px;background:var(--grad-accent);opacity:.7}
.qa-box::after{
  content:"";position:absolute;top:-70px;right:-70px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,108,255,.14),transparent 70%);pointer-events:none;
}
.qa-q{font-family:var(--disp);font-weight:600;font-size:clamp(1.3rem,2.4vw,1.75rem);margin:0 0 .7rem;color:var(--ink)}
.qa-a{margin:0;color:var(--ink-dim);font-size:1rem;line-height:1.8;max-width:920px}
.qa-a strong{color:var(--cyan);font-weight:600}

/* ============================================================
   SECTIONS
   ============================================================ */
.section{padding:5rem 0;position:relative}
.sec-head{max-width:840px;margin-bottom:2.3rem}
.sec-row{display:flex;align-items:flex-end;justify-content:space-between;gap:1.5rem;margin-bottom:1rem}
.sec-kicker{
  display:inline-flex;align-items:center;gap:.5rem;
  font-family:var(--mono);font-size:.6rem;letter-spacing:.3em;color:var(--cyan);
  border:1px solid rgba(76,201,255,.25);background:rgba(76,201,255,.07);border-radius:999px;
  padding:.34rem .85rem;margin:0 0 1rem;
}
.sec-head h2{font-family:var(--disp);font-weight:700;font-size:clamp(1.8rem,3.6vw,2.7rem);line-height:1.08;letter-spacing:-.02em;margin:0;color:var(--ink)}
.sec-index{
  font-family:var(--mono);font-size:.62rem;letter-spacing:.2em;color:var(--ink-faint);flex:none;padding-bottom:.55rem;
  border:1px dashed var(--line-2);border-radius:8px;padding:.4rem .7rem;
}
.sec-sub{color:var(--ink-dim);margin:.6rem 0 0;font-size:.96rem;line-height:1.7}

/* ============================================================
   PLATES — instrument cards
   ============================================================ */
.plate{
  margin:0;border:1px solid var(--line);border-radius:var(--r-xl);
  background:var(--card);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-card);display:flex;flex-direction:column;position:relative;overflow:hidden;
  transition:box-shadow .3s,border-color .3s;
}
.plate::before{content:"";position:absolute;top:0;left:8%;right:auto;width:34%;height:1px;background:var(--grad-accent);opacity:.8}
.plate:hover{border-color:var(--line-2)}
.plate-bar{
  display:flex;align-items:center;gap:.9rem;flex-wrap:wrap;
  padding:.8rem 1.1rem;border-bottom:1px solid var(--line);background:rgba(6,9,17,.35);
}
.plate-tag{
  font-family:var(--mono);font-size:.58rem;letter-spacing:.18em;color:var(--cyan);
  border:1px solid rgba(76,201,255,.3);border-radius:6px;padding:.26rem .55rem;background:rgba(76,201,255,.07);flex:none;
}
.plate-title{font-family:var(--disp);font-size:.88rem;font-weight:600;color:var(--ink);margin-right:auto}
.plate-tools{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}
.chip{font-family:var(--mono);font-size:.58rem;letter-spacing:.12em;color:var(--ink-dim);border:1px solid var(--line-2);border-radius:999px;padding:.26rem .65rem;background:rgba(6,9,17,.5)}
.live-chip{color:var(--mint);border-color:rgba(61,255,184,.35)}

.plate-body{display:grid;grid-template-columns:1fr 250px}
.plate-media{position:relative;min-width:0;padding:.7rem}
.plate-media canvas{width:100%;display:block;border-radius:10px}
#chart-spectrogram{height:430px;cursor:crosshair}
#chart-harmonics{height:340px}
#chart-deviation{height:260px}
#chart-trend{height:300px}
#chart-radar{height:300px}
#chart-kp{height:250px}
#map-canvas{height:420px}
#sonogram-img{position:absolute;inset:.7rem;width:calc(100% - 1.4rem);height:calc(100% - 1.4rem);object-fit:contain;background:#04060C;z-index:3;border-radius:10px}
figcaption{
  padding:.65rem 1.1rem;border-top:1px solid var(--line);
  font-family:var(--mono);font-size:.6rem;letter-spacing:.05em;color:var(--ink-faint);line-height:1.7;
}

.plate-rail{border-left:1px solid var(--line);padding:1rem 1.05rem;display:flex;flex-direction:column;gap:.85rem;min-width:0;background:rgba(6,9,17,.25)}
.plate-rail h3{margin:0;font-family:var(--mono);font-size:.58rem;letter-spacing:.26em;color:var(--ink-faint);font-weight:500;text-transform:uppercase}
.plate-rail h4{margin:0 0 .35rem;font-family:var(--mono);font-size:.56rem;letter-spacing:.2em;color:var(--ink-faint);font-weight:500;text-transform:uppercase}
.rail-mode{display:grid;grid-template-columns:38px 1fr;grid-template-rows:auto auto;column-gap:.65rem;align-items:center;margin-bottom:.55rem}
.rm-id{font-family:var(--mono);font-size:.72rem;grid-row:span 2}
.rm-hz{font-family:var(--mono);font-size:.66rem;color:var(--ink-dim)}
.rm-bar{grid-column:2;height:4px;border-radius:3px;background:rgba(148,183,255,.1);overflow:hidden}
.rm-bar i{display:block;height:100%;border-radius:3px;transition:width .8s var(--ease)}
.rail-block{border-top:1px solid var(--line);padding-top:.7rem}
.rail-peak{margin:0;font-family:var(--mono);font-size:.78rem;color:var(--amber)}
.rail-spark{height:38px;background:rgba(4,7,14,.7);border:1px solid var(--line);border-radius:9px;overflow:hidden}
.rail-spark svg{display:block;width:100%;height:100%}
.rail-note{margin:.3rem 0 0;font-size:.66rem;color:var(--ink-faint);line-height:1.55}

/* toolbar */
.seg{display:inline-flex;gap:2px;background:rgba(4,7,14,.7);border:1px solid var(--line-2);border-radius:10px;padding:3px}
.seg-btn{font-family:var(--mono);font-size:.62rem;letter-spacing:.08em;color:var(--ink-faint);background:none;border:0;border-radius:7px;padding:.34rem .75rem;cursor:pointer;transition:.18s}
.seg-btn:hover{color:var(--ink)}
.seg-btn.active{background:rgba(76,201,255,.15);color:var(--cyan);box-shadow:inset 0 0 0 1px rgba(76,201,255,.3)}
.tool-btn{
  display:inline-flex;align-items:center;gap:.4rem;cursor:pointer;
  font-family:var(--mono);font-size:.62rem;letter-spacing:.08em;color:var(--ink-dim);
  background:rgba(4,7,14,.7);border:1px solid var(--line-2);border-radius:10px;padding:.38rem .72rem;transition:.18s;
}
.tool-btn:hover{color:var(--cyan);border-color:rgba(76,201,255,.45)}
.tool-btn[aria-pressed="true"]{color:var(--mint);border-color:rgba(61,255,184,.4);background:rgba(61,255,184,.07)}

/* fullscreen */
.plate:fullscreen{background:#05070D;border-radius:0}
.plate:fullscreen .plate-body{flex:1}
.plate:fullscreen .plate-media{display:flex;flex:1}
.plate:fullscreen #chart-spectrogram{height:auto;flex:1}
.plate:fullscreen #sonogram-img{position:absolute;inset:.7rem;height:calc(100% - 1.4rem)}

/* ============================================================
   MONITOR
   ============================================================ */
.status-strip{
  display:flex;align-items:center;gap:1.1rem;flex-wrap:wrap;
  border:1px solid var(--line-2);border-radius:14px;padding:.6rem 1.2rem;margin-bottom:1.4rem;
  background:var(--card);backdrop-filter:blur(14px);box-shadow:var(--shadow-card);
}
.status-pill{display:inline-flex;align-items:center;font-family:var(--mono);font-size:.7rem;letter-spacing:.2em;color:var(--mint)}
.status-meta{font-family:var(--mono);font-size:.62rem;color:var(--ink-faint);letter-spacing:.04em}
.tone-btn{
  margin-left:auto;display:inline-flex;align-items:center;gap:.5rem;cursor:pointer;
  background:rgba(76,201,255,.07);border:1px solid rgba(76,201,255,.35);color:var(--cyan);
  font-family:var(--mono);font-size:.66rem;letter-spacing:.08em;padding:.46rem .9rem;border-radius:10px;transition:.2s;
}
.tone-btn:hover{background:rgba(76,201,255,.16);box-shadow:var(--glow-cyan)}
.tone-btn[aria-pressed="true"]{background:var(--grad-btn);color:#fff;border-color:transparent;animation:tonebeat 1.28s ease-in-out infinite}
@keyframes tonebeat{0%,100%{box-shadow:0 0 0 0 rgba(76,201,255,.5)}50%{box-shadow:0 0 0 9px rgba(76,201,255,0)}}

.metric-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(235px,1fr));gap:.9rem}
.metric-card{
  position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:1.2rem 1.25rem .95rem;background:var(--card);backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);transition:transform .28s var(--ease),border-color .28s,box-shadow .28s;
}
.metric-card::after{content:"";position:absolute;right:-40px;top:-40px;width:130px;height:130px;border-radius:50%;background:radial-gradient(circle,rgba(76,201,255,.12),transparent 70%)}
.metric-card:hover{transform:translateY(-4px);border-color:rgba(76,201,255,.4);box-shadow:0 18px 50px rgba(2,6,18,.6),var(--glow-cyan)}
.m-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:.9rem}
.m-icon{
  font-family:var(--mono);font-size:.95rem;color:var(--cyan);
  border:1px solid rgba(76,201,255,.3);background:rgba(76,201,255,.08);border-radius:10px;
  width:38px;height:38px;display:grid;place-items:center;box-shadow:inset 0 0 14px rgba(76,201,255,.08);
}
.m-no{font-family:var(--mono);font-size:.56rem;letter-spacing:.18em;color:var(--ink-faint)}
.metric-card h3{margin:0 0 .5rem;font-family:var(--mono);font-size:.62rem;letter-spacing:.18em;color:var(--ink-dim);font-weight:500;text-transform:uppercase}
.m-value{margin:0;font-family:var(--mono);font-size:2.1rem;line-height:1.1;color:var(--ink);text-shadow:0 0 24px rgba(76,201,255,.15)}
.m-value small{font-size:.76rem;color:var(--ink-faint);margin-left:.3rem}
.m-foot{margin:.4rem 0 .8rem;font-family:var(--mono);font-size:.62rem;color:var(--ink-faint)}
.spark{height:34px;background:rgba(4,7,14,.7);border:1px solid var(--line);border-radius:9px;overflow:hidden}
.spark svg{display:block;width:100%;height:100%}

/* ---------- duo + table ---------- */
.duo-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:.9rem;margin-top:.9rem}
.duo-grid .plate{border:1px solid var(--line)}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:.76rem}
th,td{padding:.7rem .75rem;text-align:left;border-bottom:1px solid var(--line)}
thead th{font-size:.56rem;letter-spacing:.18em;color:var(--ink-faint);text-transform:uppercase;font-weight:500}
tbody th{color:var(--ink-dim);font-family:var(--sans);font-weight:500;white-space:nowrap}
tbody tr{transition:background .2s}
tbody tr:hover{background:rgba(76,201,255,.05)}
.t-live{color:var(--cyan);font-weight:500}
.t-delta{font-size:.68rem}
.t-delta.pos{color:var(--mint)}
.t-delta.neg{color:var(--amber)}

/* ============================================================
   SOLAR
   ============================================================ */
.solar-stage{position:relative;border:1px solid var(--line);border-radius:var(--r-xl);overflow:hidden;background:radial-gradient(70% 70% at 50% 45%,#0A1122 0%,#04070C 100%);box-shadow:var(--shadow-card)}
.solar-stage::before{content:"";position:absolute;top:0;left:8%;width:34%;height:1px;background:var(--grad-accent);opacity:.8;z-index:2}
#solar-canvas{width:100%;height:min(72vh,620px);display:block;cursor:grab;touch-action:none}
#solar-canvas:active{cursor:grabbing}
.solar-hud{position:absolute;left:12px;bottom:12px;right:12px;display:flex;justify-content:space-between;align-items:flex-end;pointer-events:none}
.solar-controls{
  pointer-events:auto;display:flex;align-items:center;gap:1rem;flex-wrap:wrap;
  background:rgba(6,10,20,.8);border:1px solid var(--line-2);border-radius:13px;padding:.6rem .95rem;
  backdrop-filter:blur(12px);font-family:var(--mono);font-size:.62rem;color:var(--ink-dim);
}
.ctrl{display:inline-flex;align-items:center;gap:.45rem;letter-spacing:.1em}
.ctrl input[type=range]{width:104px;accent-color:var(--cyan)}
.ctrl.toggle input{accent-color:var(--cyan);width:13px;height:13px}
.planet-card{
  position:absolute;top:12px;right:12px;width:min(300px,80vw);
  background:rgba(8,12,24,.9);border:1px solid var(--line-2);border-radius:var(--r-lg);
  padding:1.05rem 1.15rem;backdrop-filter:blur(18px);box-shadow:0 20px 50px rgba(2,6,18,.6);
  animation:cardin .3s var(--ease);
}
@keyframes cardin{from{opacity:0;transform:translateY(-8px) scale(.98)}to{opacity:1;transform:none}}
.planet-card h3{margin:0 0 .15rem;font-family:var(--disp);font-weight:700;font-size:1.4rem;color:var(--cyan)}
.planet-tag{margin:0 0 .8rem;font-family:var(--mono);font-size:.56rem;letter-spacing:.24em;color:var(--amber);text-transform:uppercase}
.planet-card dl{display:grid;grid-template-columns:auto 1fr;gap:.3rem .9rem;margin:0 0 .8rem}
.planet-card dt{font-family:var(--mono);font-size:.58rem;color:var(--ink-faint);letter-spacing:.06em;align-self:center}
.planet-card dd{margin:0;font-family:var(--mono);font-size:.74rem;color:var(--ink);text-align:right}
.planet-note{margin:0;font-size:.76rem;color:var(--ink-dim);border-top:1px solid var(--line);padding-top:.7rem;line-height:1.6}
.planet-close{position:absolute;top:.6rem;right:.6rem;width:24px;height:24px;border-radius:8px;cursor:pointer;background:rgba(148,183,255,.08);border:1px solid var(--line);color:var(--ink-dim);font-size:.7rem}
.planet-close:hover{color:var(--coral);border-color:var(--coral)}
.planet-strip{display:flex;gap:.45rem;flex-wrap:wrap;margin-top:.9rem;justify-content:center}
.planet-chip{
  font-family:var(--mono);font-size:.62rem;letter-spacing:.06em;cursor:pointer;
  background:var(--glass);border:1px solid var(--line-2);color:var(--ink-dim);border-radius:999px;padding:.4rem .85rem;
  transition:.2s;display:inline-flex;align-items:center;gap:.4rem;
}
.planet-chip i{width:8px;height:8px;border-radius:50%;display:inline-block}
.planet-chip:hover,.planet-chip.active{color:var(--ink);border-color:var(--cyan);background:rgba(76,201,255,.1);box-shadow:var(--glow-cyan)}

/* ============================================================
   SPACE WEATHER
   ============================================================ */
.sw-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:.9rem;margin-bottom:1rem}
.sw-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.05rem 1.1rem;
  backdrop-filter:blur(14px);box-shadow:var(--shadow-card);
  transition:transform .28s var(--ease),border-color .28s;
}
.sw-card:hover{transform:translateY(-4px);border-color:rgba(76,201,255,.4)}
.sw-card h3{margin:0 0 .55rem;font-family:var(--mono);font-size:.58rem;letter-spacing:.2em;color:var(--ink-faint);text-transform:uppercase;font-weight:500}
.sw-value{margin:0 0 .5rem;font-family:var(--mono);font-size:1.8rem;color:var(--ink)}
.sw-value small{font-size:.72rem;color:var(--ink-faint)}
.sw-foot{margin:0;font-family:var(--mono);font-size:.6rem;color:var(--ink-dim)}
.kp-bar{height:4px;border-radius:3px;background:rgba(148,183,255,.1);overflow:hidden;margin-bottom:.5rem}
.kp-bar span{display:block;height:100%;width:10%;border-radius:3px;background:linear-gradient(90deg,var(--mint),var(--cyan));transition:width .8s var(--ease),background .8s}
.kp-scale{display:flex;gap:1rem;flex-wrap:wrap}
.kp-scale span{display:inline-flex;align-items:center;gap:.4rem;font-size:.58rem;color:var(--ink-dim)}
.kp-scale i{width:8px;height:8px;border-radius:3px;display:inline-block}
.kp-scale em{font-style:normal}

.coupling{margin-top:1rem;border:1px solid var(--line);border-radius:var(--r-xl);padding:1.6rem;background:var(--card);backdrop-filter:blur(16px);box-shadow:var(--shadow-card);position:relative;overflow:hidden}
.coupling::before{content:"";position:absolute;top:0;left:8%;width:34%;height:1px;background:var(--grad-accent);opacity:.8}
.coupling h3{margin:0 0 1.3rem;font-family:var(--disp);font-weight:700;font-size:1.35rem}
.coupling-flow{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(165px,1fr));gap:.7rem}
.coupling-flow li{
  background:rgba(6,9,17,.5);border:1px solid var(--line);border-radius:var(--r-md);
  padding:1rem;transition:transform .25s var(--ease),border-color .25s;position:relative;
}
.coupling-flow li:hover{transform:translateY(-3px);border-color:rgba(76,201,255,.4)}
.c-no{font-family:var(--mono);font-size:.56rem;letter-spacing:.2em;color:var(--cyan);display:block;margin-bottom:.5rem}
.coupling-flow h4{margin:0 0 .35rem;font-family:var(--disp);font-size:.86rem;font-weight:600}
.coupling-flow p{margin:0;font-size:.73rem;color:var(--ink-dim);line-height:1.6}

/* ============================================================
   MAP / ACADEMY / FAQ / API
   ============================================================ */
.map-legend{display:flex;gap:1.3rem;flex-wrap:wrap}
.map-legend span{display:inline-flex;align-items:center;gap:.4rem}
.map-legend i{width:9px;height:9px;border-radius:50%;display:inline-block}
.map-legend em{font-style:normal}
.dot-flash{background:var(--amber);box-shadow:0 0 10px var(--amber)}
.dot-sun{background:#FFB84D}
.dot-night{background:#2A3B55}

.academy-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:.9rem}
.acad-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.5rem;
  backdrop-filter:blur(14px);box-shadow:var(--shadow-card);position:relative;
  transition:transform .28s var(--ease),border-color .28s;overflow:hidden;
}
.acad-card::after{content:"";position:absolute;top:-46px;right:-46px;width:130px;height:130px;border-radius:50%;background:radial-gradient(circle,rgba(124,108,255,.1),transparent 70%)}
.acad-card:hover{transform:translateY(-4px);border-color:rgba(76,201,255,.4)}
.acad-no{position:absolute;top:1.2rem;right:1.35rem;margin:0;font-family:var(--mono);font-size:.6rem;letter-spacing:.2em;color:var(--ink-faint)}
.acad-card h3{margin:0 0 .7rem;font-family:var(--disp);font-weight:600;font-size:1.05rem;padding-right:2.6rem}
.acad-card p{margin:0;color:var(--ink-dim);font-size:.85rem;line-height:1.7}
.acad-card strong{color:var(--ink)}

.timeline{margin-top:.9rem;border:1px solid var(--line);border-radius:var(--r-xl);padding:1.5rem 1.6rem;background:var(--card);backdrop-filter:blur(14px);box-shadow:var(--shadow-card)}
.timeline h3{margin:0 0 1.1rem;font-family:var(--mono);font-size:.6rem;letter-spacing:.26em;color:var(--ink-faint);text-transform:uppercase;font-weight:500}
.timeline ol{list-style:none;margin:0;padding:0;position:relative}
.timeline ol::before{content:"";position:absolute;left:56px;top:6px;bottom:6px;width:1px;background:linear-gradient(180deg,var(--cyan),var(--violet),transparent)}
.timeline li{display:grid;grid-template-columns:44px auto 1fr;gap:1rem;align-items:baseline;padding:.5rem 0;position:relative}
.timeline li strong{font-family:var(--mono);color:var(--cyan);font-size:.74rem;text-align:right}
.timeline li span{color:var(--ink-dim);font-size:.84rem}
.timeline li::before{content:"";position:absolute;left:52px;top:1rem;width:9px;height:1px;background:var(--cyan)}

.faq-list{display:grid;gap:.7rem}
.faq-item{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--card);backdrop-filter:blur(12px);overflow:hidden;transition:border-color .3s}
.faq-item[open]{border-color:rgba(76,201,255,.4);box-shadow:var(--glow-cyan)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem 1.25rem;font-family:var(--disp);font-weight:600;font-size:.92rem;user-select:none;transition:color .2s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--cyan)}
.faq-chev{flex:none;width:22px;height:22px;border:1px solid var(--line-2);border-radius:7px;position:relative;transition:.3s}
.faq-chev::before{content:"";position:absolute;top:50%;left:50%;width:7px;height:1.5px;background:var(--cyan);transform:translate(-50%,-50%)}
.faq-chev::after{content:"";position:absolute;top:50%;left:50%;width:1.5px;height:7px;background:var(--cyan);transform:translate(-50%,-50%);transition:.3s}
.faq-item[open] .faq-chev{transform:rotate(180deg);border-color:var(--cyan)}
.faq-item[open] .faq-chev::after{opacity:0}
.faq-body{padding:0 1.25rem 1.15rem}
.faq-body p{margin:0;color:var(--ink-dim);font-size:.88rem;line-height:1.75}
.faq-body strong{color:var(--ink)}
.faq-body code{font-family:var(--mono);font-size:.74rem;color:var(--cyan);background:rgba(76,201,255,.07);padding:.08rem .35rem;border-radius:6px;word-break:break-all}

.api-card{border:1px solid var(--line);border-radius:var(--r-xl);padding:1.6rem;background:var(--card);backdrop-filter:blur(14px);box-shadow:var(--shadow-card)}
.api-url{display:flex;align-items:center;gap:.7rem;flex-wrap:wrap;margin-bottom:1rem;font-family:var(--mono);font-size:.74rem}
.api-url code{color:var(--mint);word-break:break-all}
.api-sample{margin:0 0 1.2rem;padding:1.1rem 1.25rem;overflow-x:auto;background:#04060C;border:1px solid var(--line);border-radius:var(--r-md);font-family:var(--mono);font-size:.7rem;line-height:1.65;color:#A8B4D4}
.api-actions{display:flex;gap:.8rem;flex-wrap:wrap}

/* ============================================================
   FOOTER
   ============================================================ */
.footer{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(7,11,20,.7),#04060C);padding:3.2rem 0 0;margin-top:1px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1.2fr 1.3fr;gap:2.2rem;padding-bottom:2.4rem;border-bottom:1px solid var(--line)}
.brand-footer{margin-bottom:1rem}
.f-mission{margin:0 0 .9rem;font-size:.83rem;color:var(--ink-dim);max-width:330px;line-height:1.75}
.f-status{margin:0;display:flex;align-items:center;gap:.5rem;font-family:var(--mono);font-size:.64rem;color:var(--mint);letter-spacing:.08em}
.f-col{display:flex;flex-direction:column;gap:.5rem}
.f-col h4{margin:0 0 .45rem;font-family:var(--mono);font-size:.56rem;letter-spacing:.26em;color:var(--ink-faint);text-transform:uppercase;font-weight:500}
.f-col a{color:var(--ink-dim);text-decoration:none;font-size:.8rem;transition:color .2s}
.f-col a:hover{color:var(--cyan)}
.lang-links{display:grid;grid-template-columns:1fr 1fr;gap:.3rem .9rem}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:1.4rem;flex-wrap:wrap;padding:1.2rem 0 1.5rem}
.footer-bottom p{margin:0;font-family:var(--mono);font-size:.6rem;color:var(--ink-faint);max-width:680px;line-height:1.7}
.f-copy{letter-spacing:.08em;white-space:nowrap;color:var(--ink-dim)}

/* ---------- reveal / flash / tip ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
@keyframes flashup{0%{color:var(--mint);text-shadow:0 0 18px rgba(61,255,184,.7)}100%{}}
.flash{animation:flashup 1.1s ease-out}
#chart-tip{position:fixed;z-index:200;pointer-events:none;background:rgba(8,12,24,.94);border:1px solid rgba(76,201,255,.4);border-radius:11px;padding:.5rem .7rem;font:11px var(--mono);color:var(--ink);display:none;backdrop-filter:blur(10px);box-shadow:0 14px 36px rgba(2,6,18,.6)}
#chart-tip .tip-t{color:var(--cyan);letter-spacing:.1em;margin-bottom:.22rem}
#chart-tip div{display:flex;align-items:center;gap:.4rem}
#chart-tip i{width:8px;height:8px;border-radius:3px;display:inline-block}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:1060px){
  .plate-body{grid-template-columns:1fr}
  .plate-rail{border-left:0;border-top:1px solid var(--line);flex-direction:row;flex-wrap:wrap;gap:1.3rem}
  .plate-rail>*{flex:1 1 190px}
  #spec-rail-modes{display:flex;gap:1.1rem;flex-wrap:wrap}
  .rail-mode{margin-bottom:0;grid-template-columns:auto auto auto;grid-template-rows:auto;column-gap:.55rem}
  .rm-bar{grid-column:auto;width:56px}
}
@media (max-width:960px){
  .duo-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:1.8rem}
  .f-brand{grid-column:span 2}
  .hero-cols{grid-template-columns:1fr}
  .hero-strip-inner{grid-template-columns:repeat(3,1fr)}
  .hs-iss{display:none}
}
@media (max-width:840px){
  .nav-toggle{display:block}
  .topnav{
    position:fixed;inset:0 0 auto 0;top:0;padding:5.4rem 1.4rem 2rem;flex-direction:column;align-items:stretch;gap:.5rem;
    background:rgba(5,8,15,.98);backdrop-filter:blur(20px);transform:translateY(-102%);transition:transform .4s var(--ease);
    border-bottom:1px solid var(--line);z-index:110;
  }
  .topnav.open{transform:none}
  .topnav a{font-size:.98rem}
  .hero{padding-top:7rem}
  .hero .shell{padding-bottom:2rem}
  .section{padding:3.6rem 0}
  #chart-spectrogram{height:330px}
  .planet-card{position:static;width:100%;margin:.8rem}
  #solar-canvas{height:54vh}
  .qa{padding-top:2rem}
  .hero-strip-inner{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:560px){
  .metric-grid{grid-template-columns:1fr 1fr}
  .sw-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .f-brand{grid-column:span 1}
  .brand-text{display:none}
  .lang-menu{right:-56px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
  #grain{animation:none}
}

/* ============================================================
   SONOGRAM ARCHIVE — calendar
   ============================================================ */
.archive{margin-top:.9rem;border:1px solid var(--line);border-radius:var(--r-xl);background:var(--card);backdrop-filter:blur(18px);box-shadow:var(--shadow-card);overflow:hidden;position:relative}
.archive::before{content:"";position:absolute;top:0;left:8%;width:34%;height:1px;background:var(--grad-accent);opacity:.8}
.archive-bar{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding:.8rem 1.1rem;border-bottom:1px solid var(--line);background:rgba(6,9,17,.35)}
.archive-id{display:flex;align-items:center;gap:.9rem}
.archive-nav{display:flex;align-items:center;gap:.6rem}
.cal-label{font-size:.72rem;letter-spacing:.18em;color:var(--paper-dim);min-width:132px;text-align:center}
.archive-body{display:grid;grid-template-columns:330px 1fr;gap:0}
.cal-wrap{padding:1rem;border-right:1px solid var(--line)}
.cal-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:4px}
.cal-head span{font-size:.54rem;letter-spacing:.14em;color:var(--ink-faint);text-align:center;padding:.3rem 0}
.cal-day{
  aspect-ratio:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  border:1px solid var(--line);border-radius:10px;background:rgba(4,7,14,.5);cursor:pointer;
  font-family:var(--mono);font-size:.78rem;color:var(--paper-dim);transition:.18s;position:relative;
}
.cal-day:hover{border-color:rgba(76,201,255,.5);color:var(--paper);transform:translateY(-2px)}
.cal-day.empty{border:0;background:none;cursor:default;pointer-events:none}
.cal-day.future{opacity:.28;pointer-events:none}
.cal-day.today{border-color:var(--cyan);box-shadow:inset 0 0 0 1px rgba(76,201,255,.35)}
.cal-day.selected{background:rgba(76,201,255,.16);border-color:var(--cyan);color:var(--cyan)}
.cal-day .dot{width:4px;height:4px;border-radius:50%;background:var(--cyan);box-shadow:0 0 6px var(--cyan)}
.cal-day.has-feed .dot{background:var(--mint);box-shadow:0 0 6px var(--mint)}
.archive-view{display:flex;flex-direction:column;min-width:0}
.av-meta{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.6rem 1rem;border-bottom:1px solid var(--line)}
.av-date{font-size:.78rem;letter-spacing:.14em;color:var(--amber)}
.av-media{position:relative;flex:1;padding:.6rem;min-height:300px}
#av-canvas{width:100%;height:100%;min-height:280px;display:block;border-radius:10px;cursor:crosshair}
#av-img{position:absolute;inset:.6rem;width:calc(100% - 1.2rem);height:calc(100% - 1.2rem);object-fit:contain;background:#04060C;z-index:3;border-radius:10px}
@media (max-width:1060px){
  .archive-body{grid-template-columns:1fr}
  .cal-wrap{border-right:0;border-bottom:1px solid var(--line)}
}

/* ============================================================
   v4.8 — LOGO + MOBILE MASTERY + POLISH
   ============================================================ */
.mark{display:grid;place-items:center;flex:none;transition:transform .5s var(--ease)}
.brand:hover .mark{transform:rotate(120deg)}
.brand:hover .mark path{filter:drop-shadow(0 0 6px rgba(255,200,107,.55))}
.mark svg{display:block}

/* a11y focus */
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}
.cal-day:focus-visible{outline-offset:-2px}

/* touch targets */
.seg-btn{min-height:32px}
.tool-btn{min-height:32px}
.cal-day{min-width:36px;min-height:36px}
@media (hover:none){
  .tool-btn,.seg-btn{padding:.5rem .9rem}
  .faq-item summary{padding:1.15rem 1.2rem}
}

/* safe areas (notch) */
.topbar{padding-left:max(1rem,env(safe-area-inset-left));padding-right:max(1rem,env(safe-area-inset-right))}
.hero-strip-inner,.footer-bottom{padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right)}

/* ---------- mobile refinements ---------- */
@media (max-width:840px){
  .qa-box{padding:1.25rem 1.15rem}
  .plate-bar{padding:.7rem .85rem;gap:.6rem}
  .plate-tools{gap:.4rem}
  .plate-media{padding:.55rem}
  .hero-strip-inner .hs-item{padding:.85rem 1rem .85rem 0;margin-right:1rem}
  .hs-item dd{font-size:1.2rem}
  .archive-bar{padding:.7rem .85rem}
  .archive-body .cal-wrap{padding:.85rem}
  .av-meta{padding:.55rem .85rem}
  .av-media{padding:.55rem;min-height:260px}
  .timeline li{grid-template-columns:38px auto 1fr;gap:.8rem}
  .acad-card,.coupling,.api-card,.timeline{padding:1.2rem 1.15rem}
  .planet-card{margin:.7rem}
  .sec-head h2{font-size:clamp(1.55rem,6vw,2rem)}
  h1{font-size:clamp(2.5rem,11vw,3.6rem)}
  .lede{font-size:.98rem}
  .hero{padding-top:6.5rem}
  #chart-harmonics{height:280px}
  #chart-trend{height:260px}
  #chart-radar{height:260px}
  #map-canvas{height:340px}
}
@media (max-width:560px){
  .nav-cta{display:none}
  .topbar-inner{gap:.7rem;padding:.5rem .7rem}
  .lang-btn{padding:.4rem .5rem}
  .brand .mark svg{width:34px;height:34px}
  .hero-strip-inner{grid-template-columns:1fr 1fr}
  .hero-strip-inner .hs-item{border-right:0;border-bottom:1px solid var(--line);padding:.7rem .2rem;margin:0}
  .hero-strip-inner{border-bottom:1px solid var(--line)}
  .m-value{font-size:1.7rem}
  .sw-value{font-size:1.5rem}
  .metric-card,.sw-card{padding:.95rem .9rem}
  .api-sample{font-size:.62rem;padding:.9rem .9rem}
  .footer-grid{gap:1.5rem}
  .lang-links{grid-template-columns:1fr 1fr;gap:.25rem .7rem}
  .f-col a{font-size:.76rem}
  .status-strip{gap:.7rem;padding:.5rem .8rem}
  .status-meta{display:none}
  .tone-btn{margin-left:auto}
  .duo-grid{grid-template-columns:1fr}
  .hero-actions{flex-direction:column;align-items:stretch}
  .btn{justify-content:center}
  #chart-spectrogram{height:300px}
  .seg{order:3;width:100%;justify-content:center}
  .plate-tools{width:100%;justify-content:center}
}
@media (max-width:400px){
  .shell{width:calc(100% - 1.6rem)}
  .metric-grid{grid-template-columns:1fr}
  .hero-strip-inner{grid-template-columns:1fr 1fr}
}

/* ============================================================
   v4.9 — AWARD LAYER: cursor · spotlight · ticker · progress
   ============================================================ */

/* --- custom cursor (fine pointers only) --- */
@media (hover:hover) and (pointer:fine){
  body{cursor:none}
  a,button,summary,.cal-day,.seg-btn,.tool-btn,input[type=range]{cursor:none}
  #cursor-dot{
    position:fixed;top:0;left:0;width:6px;height:6px;border-radius:50%;
    background:var(--cyan);z-index:500;pointer-events:none;
    transform:translate(-50%,-50%);box-shadow:0 0 12px rgba(76,201,255,.8);
  }
  #cursor-ring{
    position:fixed;top:0;left:0;width:34px;height:34px;border-radius:50%;
    border:1.5px solid rgba(76,201,255,.5);z-index:499;pointer-events:none;
    transform:translate(-50%,-50%);transition:width .25s var(--ease),height .25s var(--ease),border-color .25s,background .25s;
  }
  #cursor-ring.hot{width:52px;height:52px;border-color:rgba(124,108,255,.9);background:rgba(124,108,255,.08)}
  #cursor-ring.press{width:22px;height:22px}
}
@media (hover:none),(pointer:coarse){#cursor-dot,#cursor-ring{display:none}}

/* --- scroll progress --- */
#scroll-progress{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:250;pointer-events:none;
  background:var(--grad-accent);transform-origin:0 50%;transform:scaleX(0);
  box-shadow:0 0 12px rgba(76,201,255,.5);
}

/* --- dots nav (desktop) --- */
#dots-nav{
  position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:180;
  display:flex;flex-direction:column;gap:14px;
}
#dots-nav a{
  position:relative;width:8px;height:8px;border-radius:50%;
  background:rgba(148,183,255,.25);transition:.25s;display:block;
}
#dots-nav a:hover{background:var(--cyan);transform:scale(1.4)}
#dots-nav a.active{background:var(--cyan);box-shadow:0 0 12px rgba(76,201,255,.8);transform:scale(1.3)}
#dots-nav a .dn-tip{
  position:absolute;right:22px;top:50%;transform:translateY(-50%) translateX(6px);
  white-space:nowrap;font-family:var(--mono);font-size:.56rem;letter-spacing:.14em;color:var(--cyan);
  background:rgba(5,8,15,.9);border:1px solid var(--line-2);border-radius:7px;padding:.3rem .6rem;
  opacity:0;pointer-events:none;transition:.2s var(--ease);
}
#dots-nav a:hover .dn-tip{opacity:1;transform:translateY(-50%) translateX(0)}
@media (max-width:1180px){#dots-nav{display:none}}

/* --- hero line reveal --- */
.hl-wrap{display:inline-block;overflow:hidden;vertical-align:bottom;padding-bottom:.08em;margin-bottom:-.08em}
.hl{display:inline-block;transform:translateY(115%);animation:hlUp 1s var(--ease) forwards}
.hl-grad{animation-delay:.15s}
@keyframes hlUp{to{transform:translateY(0)}}
h1 em.hl{background:var(--grad-accent);background-size:200% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:hlUp 1s var(--ease) .15s forwards,gradShift 6s ease-in-out 1.2s infinite}
@keyframes gradShift{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}

/* hero load choreography */
.hero .eyebrow.reveal{transition-delay:.1s}
.hero h1.reveal{transition-delay:.2s}
.hero .hero-cols .lede.reveal{transition-delay:.45s}
.hero .hero-actions.reveal{transition-delay:.6s}
.hero .hero-strip.reveal{transition-delay:.75s}
.hero .ticker.reveal{transition-delay:.9s}

/* --- live ticker --- */
.ticker{
  overflow:hidden;border-top:1px solid var(--line);background:rgba(4,7,14,.7);
  position:relative;z-index:2;backdrop-filter:blur(8px);
}
.ticker::before{content:"";position:absolute;left:0;top:0;bottom:0;width:70px;z-index:2;
  background:linear-gradient(90deg,rgba(5,7,13,.9),transparent)}
.ticker::after{content:"";position:absolute;right:0;top:0;bottom:0;width:70px;z-index:2;
  background:linear-gradient(-90deg,rgba(5,7,13,.9),transparent)}
.ticker-track{
  display:flex;gap:3rem;width:max-content;padding:.55rem 0;
  font-family:var(--mono);font-size:.64rem;letter-spacing:.18em;color:var(--ink-dim);
  animation:tick 46s linear infinite;will-change:transform;
}
.ticker:hover .ticker-track{animation-play-state:paused}
@keyframes tick{to{transform:translateX(-50%)}}
.ticker-track b{color:var(--cyan);font-weight:500}
.ticker-track .tk-sep{color:var(--brass)}

/* --- card spotlight --- */
.plate,.metric-card,.sw-card,.acad-card,.qa-box,.coupling,.archive,.api-card,.faq-item{
  position:relative;overflow:hidden;
}
.plate::before,.metric-card::after,.sw-card::after,.acad-card::after,.qa-box::after,.coupling::after,.archive::after,.api-card::after,.faq-item::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .35s;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%),rgba(76,201,255,.09),transparent 42%);
}
.plate:hover::before,.metric-card:hover::after,.sw-card:hover::after,.acad-card:hover::after,.qa-box:hover::after,.coupling:hover::after,.archive:hover::after,.api-card:hover::after,.faq-item:hover::after{opacity:1}
/* keep plate top gradient line visible (plate::before conflict) */
.plate::before{
  background:
    radial-gradient(420px circle at var(--mx,50%) var(--my,50%),rgba(76,201,255,.10),transparent 42%),
    linear-gradient(90deg,transparent,rgba(76,201,255,.55),transparent);
  opacity:1;
}
.plate{--mx:20%;--my:0%}

/* --- magnetic + sheen buttons --- */
.btn-primary{position:relative;overflow:hidden}
.btn-primary::after{
  content:"";position:absolute;top:0;left:-80%;width:55%;height:100%;
  background:linear-gradient(105deg,transparent,rgba(255,255,255,.35),transparent);
  transform:skewX(-22deg);transition:left .6s var(--ease);
}
.btn-primary:hover::after{left:135%}
.magnet{transition:transform .2s var(--ease)}

/* --- value tick flash --- */
.tickup{animation:tickup .55s var(--ease)}
@keyframes tickup{0%{transform:translateY(6px);opacity:.4;color:var(--mint)}100%{transform:none;opacity:1}}

@media (prefers-reduced-motion:reduce){
  .hl{animation:none!important;transform:none!important}
  .ticker-track{animation:none!important}
  #cursor-dot,#cursor-ring{display:none!important}
  body{cursor:auto!important}
}


/* SEO/UX patch — Schumann Resonance Live, 23 Aug 2026 */
.hero-actions{align-items:center;gap:.7rem}
.hero-proof{margin:.9rem 0 0;max-width:720px;color:var(--ink-faint);font-family:var(--mono);font-size:.62rem;line-height:1.65;letter-spacing:.05em;text-transform:none}
.topnav a[data-i18n="nav.guides"]{color:var(--amber)}
.topnav a[data-i18n="nav.guides"]:hover{color:var(--ink);background:rgba(255,200,107,.09)}
.qa{scroll-margin-top:6rem}
#sonogram,#monitor,#harmonics,#space-weather,#faq{scroll-margin-top:5.5rem}
.qa-box{border-left:2px solid var(--cyan);box-shadow:0 14px 42px rgba(0,0,0,.14)}
.qa-a{max-width:78ch}
:where(a,button,summary,input,select):focus-visible{outline:2px solid var(--amber);outline-offset:3px;border-radius:6px}
.plate-title{overflow-wrap:anywhere}
.plate-tools{flex-wrap:wrap}
@media (max-width:960px){.hero-proof{max-width:60ch}}
@media (max-width:560px){.hero-proof{font-size:.58rem;line-height:1.55;margin-top:.75rem}.hero-actions{gap:.6rem}.hero-actions .btn{width:100%}}