/* =========================================================================
   a16z Big Ideas Explorer — Material Design 3, warm-orange theme
   Pure CSS, zero build. Multi-section layout (hero / charts / heatmap /
   reality check / sortable table / glossary).
   ========================================================================= */

:root, [data-theme="light"] {
  --primary:                #c2410c;
  --on-primary:             #ffffff;
  --primary-container:      #ffdbcc;
  --on-primary-container:   #3a1200;

  --surface:                #faf8f6;
  --surface-container-lowest:#ffffff;
  --surface-container-low:  #f5f1ed;
  --surface-container:      #efe9e3;
  --surface-container-high: #e9e2db;
  --surface-bright:         #faf8f6;
  --on-surface:             #1c1b1a;
  --on-surface-variant:     #4d4640;
  --outline:                #837970;
  --outline-variant:        #d8cdc3;

  --scrim:                  rgba(0,0,0,.34);
  --accent:                 #ff6a3d;

  /* category accents */
  --c-american-dynamism:    #d93025;
  --c-apps:                 #1a73e8;
  --c-bio-health:           #12a150;
  --c-consumer:             #c2185b;
  --c-crypto:               #e8920a;
  --c-enterprise-fintech:   #5e35b1;
  --c-games:                #8430ce;
  --c-growth:               #00897b;
  --c-infrastructure:       #546e7a;
  --c-speedrun:             #e8710a;
  /* year accents */
  --c-2025:                 #1a73e8;
  --c-2026:                 #ff6a3d;

  --font-brand: "Roboto Flex", "Noto Sans TC", system-ui, sans-serif;
  --font-body:  "Roboto", "Roboto Flex", "Noto Sans TC", system-ui, -apple-system, sans-serif;
  --font-mono:  "Roboto Mono", "SF Mono", ui-monospace, Menlo, monospace;

  --r-sm: 8px; --r-md: 12px; --r-lg: 16px; --r-xl: 24px; --r-full: 999px;
  --e1: 0 1px 2px rgba(0,0,0,.10), 0 1px 3px 1px rgba(0,0,0,.06);
  --e2: 0 1px 2px rgba(0,0,0,.12), 0 2px 6px 2px rgba(0,0,0,.08);
  --e3: 0 4px 8px 3px rgba(0,0,0,.10), 0 1px 3px rgba(0,0,0,.14);
  --ease: cubic-bezier(.2,0,0,1);
  --dur: 220ms;
}

[data-theme="dark"] {
  --primary:                #ffb59a;
  --on-primary:             #5a1c00;
  --primary-container:      #7d2c0a;
  --on-primary-container:   #ffdbcc;

  --surface:                #15120f;
  --surface-container-lowest:#100d0b;
  --surface-container-low:  #1d1916;
  --surface-container:      #211d19;
  --surface-container-high: #2c2722;
  --surface-bright:         #3b3530;
  --on-surface:             #ece2da;
  --on-surface-variant:     #cfc4ba;
  --outline:                #9a8e83;
  --outline-variant:        #4d463f;

  --scrim:                  rgba(0,0,0,.6);
  --accent:                 #ff8a63;

  --c-american-dynamism:    #f2867d;
  --c-apps:                 #8ab4f8;
  --c-bio-health:           #6dd58c;
  --c-consumer:             #f48fb1;
  --c-crypto:               #ffc24d;
  --c-enterprise-fintech:   #c5a8ff;
  --c-games:                #d3a4ff;
  --c-growth:               #4dd0c4;
  --c-infrastructure:       #aebfc8;
  --c-speedrun:             #fcad70;
  --c-2025:                 #8ab4f8;
  --c-2026:                 #ff8a63;

  --e1: 0 1px 3px 1px rgba(0,0,0,.45), 0 1px 2px rgba(0,0,0,.5);
  --e2: 0 2px 6px 2px rgba(0,0,0,.45), 0 1px 2px rgba(0,0,0,.5);
  --e3: 0 4px 10px 3px rgba(0,0,0,.5), 0 1px 3px rgba(0,0,0,.6);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0; font-family: var(--font-body); font-size: 16px; line-height: 1.55;
  color: var(--on-surface); background: var(--surface);
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
svg, canvas { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.material-symbols-rounded { font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 24; line-height: 1; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }

/* ---------- app bar ---------- */
.appbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 12px;
  padding: 10px clamp(14px, 4vw, 40px);
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--outline-variant);
}
.appbar__brand { display: flex; align-items: center; gap: 12px; margin-right: auto; min-width: 0; }
.brand-mark {
  flex: none; display: grid; place-items: center; width: 40px; height: 40px;
  border-radius: 11px; background: linear-gradient(135deg, var(--accent), var(--primary));
  color: #fff; font-family: var(--font-mono); font-weight: 600; font-size: 14px; letter-spacing: -.5px;
}
.brand-text { display: flex; flex-direction: column; min-width: 0; font-weight: 600; line-height: 1.2; }
.brand-text > span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.brand-sub { font-size: .72rem; font-weight: 400; color: var(--on-surface-variant); }

.ghstar {
  display: inline-flex; align-items: center; gap: 6px; height: 36px; padding: 0 12px;
  border: 1px solid var(--outline-variant); border-radius: var(--r-full);
  font-size: .82rem; font-weight: 600; color: var(--on-surface);
  background: var(--surface-container-low); transition: background var(--dur), border-color var(--dur);
}
.ghstar:hover { text-decoration: none; border-color: var(--primary); background: var(--surface-container); }
.ghstar__logo { width: 15px; height: 15px; }
.ghstar__star { color: #f5a623; }
.ghstar__count {
  padding: 1px 7px; border-radius: var(--r-full); font-size: .74rem;
  background: var(--primary-container); color: var(--on-primary-container);
}
@media (max-width: 560px) { .ghstar { display: none; } }

.seg {
  display: inline-flex; padding: 3px; gap: 2px; border-radius: var(--r-full);
  background: var(--surface-container); border: 1px solid var(--outline-variant);
}
.seg button {
  padding: 5px 13px; border-radius: var(--r-full); font-size: .84rem; font-weight: 600;
  color: var(--on-surface-variant); transition: background var(--dur), color var(--dur); white-space: nowrap;
}
.seg button[aria-pressed="true"] { background: var(--primary); color: var(--on-primary); }
.icon-btn {
  display: grid; place-items: center; width: 40px; height: 40px; border-radius: var(--r-full);
  color: var(--on-surface-variant); transition: background var(--dur), color var(--dur);
}
.icon-btn:hover { background: var(--surface-container-high); color: var(--on-surface); }

/* ---------- hero ---------- */
.hero {
  max-width: 1100px; margin: 0 auto; padding: clamp(40px, 7vw, 88px) clamp(18px, 5vw, 40px) 28px;
  text-align: center;
}
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; margin-bottom: 22px;
  border: 1px solid var(--outline-variant); border-radius: var(--r-full);
  font-size: .78rem; color: var(--on-surface-variant); background: var(--surface-container-low);
}
.hero__eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 22%, transparent); }
.hero h1 {
  margin: 0 0 16px; font-family: var(--font-brand); font-weight: 700; letter-spacing: -.02em;
  font-size: clamp(2rem, 5.4vw, 3.5rem); line-height: 1.08;
}
.hero h1 .grad { background: linear-gradient(100deg, var(--accent), var(--c-games)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero p { max-width: 660px; margin: 0 auto 30px; font-size: 1.06rem; color: var(--on-surface-variant); }

.hero__stats { display: flex; flex-wrap: wrap; justify-content: center; gap: clamp(18px, 5vw, 52px); margin-bottom: 34px; }
.hero__stat { display: flex; flex-direction: column; }
.hero__stat b { font-family: var(--font-brand); font-size: clamp(1.7rem, 4vw, 2.6rem); font-weight: 700; line-height: 1; }
.hero__stat span { margin-top: 6px; font-size: .8rem; color: var(--on-surface-variant); }
.hero__stat--accent b { color: var(--accent); }

.hero__nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.hero__nav a {
  display: inline-flex; align-items: center; gap: 7px; padding: 9px 16px; border-radius: var(--r-full);
  font-size: .88rem; font-weight: 600; color: var(--on-surface);
  background: var(--surface-container-low); border: 1px solid var(--outline-variant);
  transition: background var(--dur), border-color var(--dur), color var(--dur);
}
.hero__nav a:hover { text-decoration: none; background: var(--surface-container-high); }
.hero__nav a.active { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }
.hero__nav a.active .material-symbols-rounded { color: var(--on-primary); }
.hero__nav .material-symbols-rounded { font-size: 18px; color: var(--primary); }

/* ---------- section scaffold ---------- */
section[id] { scroll-margin-top: 70px; }
.section-head { max-width: 1180px; margin: 0 auto; padding: 0 clamp(18px, 5vw, 40px) 6px; }
.viz, .reality-spotlight, .explorer, .glossary { padding: clamp(34px, 6vw, 64px) 0; }
.reality-spotlight, .glossary { background: var(--surface-container-low); border-block: 1px solid var(--outline-variant); }
.section-head h2 { margin: 0 0 6px; font-family: var(--font-brand); font-size: clamp(1.5rem, 3.4vw, 2.1rem); font-weight: 700; letter-spacing: -.01em; }
.section-head p { margin: 0 0 22px; max-width: 720px; color: var(--on-surface-variant); }

/* ---------- charts ---------- */
.viz-grid {
  max-width: 1180px; margin: 0 auto; padding: 0 clamp(18px, 5vw, 40px);
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
}
.viz-card {
  margin: 0; padding: 18px; border-radius: var(--r-lg);
  background: var(--surface-container-lowest); border: 1px solid var(--outline-variant); box-shadow: var(--e1);
}
.viz-card--wide { grid-column: 1 / -1; }
.viz-card figcaption {
  font-weight: 600; font-size: .82rem; text-transform: uppercase; letter-spacing: .05em;
  color: var(--on-surface-variant); margin-bottom: 14px;
}
.chart-wrap { position: relative; height: 280px; }

/* heatmap */
.heatmap-wrap { overflow-x: auto; }
#heatmap { display: grid; gap: 4px; min-width: 320px; }
.hm-cell {
  display: grid; place-items: center; min-height: 38px; padding: 4px 6px;
  border-radius: 7px; font-size: .82rem; font-weight: 600; font-variant-numeric: tabular-nums;
}
.hm-head { color: var(--on-surface-variant); font-size: .76rem; text-transform: uppercase; letter-spacing: .04em; }
.hm-rowhead { justify-content: flex-start; gap: 8px; font-weight: 500; color: var(--on-surface); font-size: .85rem; }
.hm-dot { width: 9px; height: 9px; border-radius: 50%; flex: none; background: var(--cat, var(--primary)); }
.hm-total { background: var(--surface-container); color: var(--on-surface-variant); }

/* ---------- reality check ---------- */
.reality-grid {
  max-width: 1180px; margin: 0 auto; padding: 0 clamp(18px, 5vw, 40px);
  display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 16px;
}
.reality-card {
  display: flex; flex-direction: column; gap: 10px; padding: 20px; text-align: left;
  border-radius: var(--r-lg); background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant); box-shadow: var(--e1);
  cursor: pointer; transition: box-shadow var(--dur), transform var(--dur), border-color var(--dur);
}
.reality-card:hover { box-shadow: var(--e3); transform: translateY(-3px); border-color: color-mix(in srgb, var(--primary) 50%, var(--outline-variant)); }
.reality-card__top { display: flex; align-items: center; gap: 8px; }
.reality-card h3 { margin: 0; font-size: 1.08rem; font-weight: 700; line-height: 1.3; }
.reality-card__pred { margin: 0; font-size: .88rem; color: var(--on-surface-variant);
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.reality-card__what {
  margin-top: auto; padding: 12px 14px; border-radius: var(--r-md);
  background: color-mix(in srgb, var(--c-growth) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--c-growth) 28%, transparent);
}
.reality-card__label { display: inline-flex; align-items: center; gap: 6px; font-size: .72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .04em; color: var(--c-growth); margin-bottom: 6px; }
.reality-card__label .material-symbols-rounded { font-size: 16px; }
.reality-card__what p { margin: 0; font-size: .85rem; line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.reality-card__links { display: flex; flex-direction: column; gap: 4px; }
.reality-card__links a { display: inline-flex; align-items: center; gap: 5px; font-size: .76rem;
  color: var(--on-surface-variant); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.reality-card__links a:hover { color: var(--primary); }
.reality-card__links .material-symbols-rounded { font-size: 14px; flex: none; }

/* ---------- pills / badges shared ---------- */
.cat-pill {
  display: inline-flex; align-items: center; gap: 5px; padding: 3px 10px; border-radius: var(--r-full);
  font-size: .74rem; font-weight: 600; white-space: nowrap;
  color: var(--cat, var(--primary));
  background: color-mix(in srgb, var(--cat, var(--primary)) 13%, transparent);
  border: 1px solid color-mix(in srgb, var(--cat, var(--primary)) 32%, transparent);
}
.cat-pill::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--cat, var(--primary)); }
.yr-badge { font-family: var(--font-mono); font-size: .76rem; font-weight: 600; color: var(--on-surface-variant);
  padding: 2px 8px; border-radius: var(--r-sm); background: var(--surface-container); }
/* map category key -> --cat */
.cat--american-dynamism { --cat: var(--c-american-dynamism); }
.cat--apps { --cat: var(--c-apps); }
.cat--bio-health { --cat: var(--c-bio-health); }
.cat--consumer { --cat: var(--c-consumer); }
.cat--crypto { --cat: var(--c-crypto); }
.cat--enterprise-fintech { --cat: var(--c-enterprise-fintech); }
.cat--games { --cat: var(--c-games); }
.cat--growth { --cat: var(--c-growth); }
.cat--infrastructure { --cat: var(--c-infrastructure); }
.cat--speedrun { --cat: var(--c-speedrun); }

/* ---------- explorer controls ---------- */
.controls {
  max-width: 1180px; margin: 0 auto 12px; padding: 0 clamp(18px, 5vw, 40px);
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px;
}
.search {
  display: flex; align-items: center; gap: 8px; flex: 1 1 320px; min-width: 220px; height: 46px; padding: 0 12px;
  border-radius: var(--r-full); background: var(--surface-container-low); border: 1px solid var(--outline-variant);
  transition: border-color var(--dur), background var(--dur);
}
.search:focus-within { border-color: var(--primary); background: var(--surface-container-lowest); }
.search .material-symbols-rounded { color: var(--on-surface-variant); }
.search input { flex: 1; min-width: 0; height: 100%; border: 0; background: none; color: inherit; font-size: .95rem; outline: none; }
.search__clear { width: 32px; height: 32px; }
.result-count { font-size: .85rem; color: var(--on-surface-variant); white-space: nowrap; }
.chips {
  max-width: 1180px; margin: 0 auto 18px; padding: 0 clamp(18px, 5vw, 40px);
  display: flex; flex-wrap: wrap; gap: 8px;
}
.chip {
  display: inline-flex; align-items: center; gap: 6px; padding: 6px 13px; border-radius: var(--r-full);
  font-size: .84rem; font-weight: 600; color: var(--on-surface-variant);
  background: var(--surface-container-low); border: 1px solid var(--outline-variant);
  transition: background var(--dur), color var(--dur), border-color var(--dur);
}
.chip:hover { background: var(--surface-container-high); }
.chip__n { font-size: .72rem; padding: 0 6px; border-radius: var(--r-full); background: var(--surface-container-high); color: var(--on-surface-variant); }
.chip[aria-pressed="true"] { color: #fff; background: var(--cat, var(--primary)); border-color: var(--cat, var(--primary)); }
.chip[aria-pressed="true"] .chip__n { background: rgba(255,255,255,.25); color: #fff; }
.chip--american-dynamism { --cat: var(--c-american-dynamism); }
.chip--apps { --cat: var(--c-apps); }
.chip--bio-health { --cat: var(--c-bio-health); }
.chip--consumer { --cat: var(--c-consumer); }
.chip--crypto { --cat: var(--c-crypto); }
.chip--enterprise-fintech { --cat: var(--c-enterprise-fintech); }
.chip--games { --cat: var(--c-games); }
.chip--growth { --cat: var(--c-growth); }
.chip--infrastructure { --cat: var(--c-infrastructure); }
.chip--speedrun { --cat: var(--c-speedrun); }

/* ---------- table ---------- */
.table-wrap {
  max-width: 1180px; margin: 0 auto; padding: 0 clamp(18px, 5vw, 40px);
}
.ptable { width: 100%; border-collapse: separate; border-spacing: 0; font-size: .92rem; }
.ptable thead th {
  position: sticky; top: 60px; z-index: 5;
  text-align: left; padding: 11px 14px; white-space: nowrap; cursor: pointer; user-select: none;
  font-size: .76rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em;
  color: var(--on-surface-variant); background: var(--surface-container);
  border-bottom: 2px solid var(--outline-variant);
}
.ptable thead th:first-child { border-top-left-radius: var(--r-md); }
.ptable thead th:last-child { border-top-right-radius: var(--r-md); }
.ptable thead th:hover { color: var(--on-surface); background: var(--surface-container-high); }
.ptable thead th[aria-sort="ascending"], .ptable thead th[aria-sort="descending"] { color: var(--primary); }
.th-arrow { font-size: 15px; vertical-align: -3px; margin-left: 3px; opacity: .4; }
.th-arrow--on { opacity: 1; color: var(--primary); }

.ptable tbody tr {
  cursor: pointer; transition: background var(--dur);
}
.ptable tbody tr:nth-child(even) { background: color-mix(in srgb, var(--surface-container-low) 55%, transparent); }
.ptable tbody tr:hover { background: color-mix(in srgb, var(--primary) 9%, transparent); }
.ptable tbody td { padding: 12px 14px; border-bottom: 1px solid var(--outline-variant); vertical-align: top; }
.col-title { width: 46%; }
.row-title { display: block; font-weight: 600; color: var(--on-surface); }
.row-snip { display: block; margin-top: 3px; font-size: .8rem; color: var(--on-surface-variant); }
.col-author { color: var(--on-surface-variant); white-space: nowrap; }
.col-check { text-align: center; }
.check-yes { color: var(--c-growth); font-size: 20px; }
.check-no { color: var(--outline); }

/* responsive: turn rows into stacked cards (grid keeps long text from overflowing) */
@media (max-width: 720px) {
  .ptable thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .ptable, .ptable tbody, .ptable tr, .ptable td { display: block; width: 100%; max-width: 100%; }
  .ptable tbody tr {
    margin-bottom: 12px; padding: 8px 6px; border: 1px solid var(--outline-variant); border-radius: var(--r-md);
    background: var(--surface-container-lowest);
  }
  .ptable tbody tr:nth-child(even) { background: var(--surface-container-lowest); }
  .ptable tbody td {
    border: 0; padding: 4px 12px; align-items: start;
    display: grid; grid-template-columns: 60px minmax(0, 1fr); column-gap: 12px; row-gap: 2px;
  }
  .ptable tbody td::before {
    content: attr(data-label); grid-column: 1; grid-row: 1;
    font-size: .68rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em;
    color: var(--on-surface-variant); padding-top: 2px;
  }
  .ptable tbody td > * { grid-column: 2; min-width: 0; overflow-wrap: anywhere; }
  .col-title { width: auto; }
  .col-author { white-space: normal; }
}

/* ---------- glossary / categories ---------- */
.cat-grid {
  max-width: 1180px; margin: 0 auto; padding: 0 clamp(18px, 5vw, 40px);
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px;
}
.cat-card {
  text-align: left; padding: 18px; border-radius: var(--r-lg);
  background: var(--surface-container-lowest); border: 1px solid var(--outline-variant);
  border-left: 4px solid var(--cat, var(--primary));
  transition: box-shadow var(--dur), transform var(--dur);
}
.cat-card:hover { box-shadow: var(--e2); transform: translateY(-2px); }
.cat-card__head { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.cat-card__dot { width: 10px; height: 10px; border-radius: 50%; background: var(--cat, var(--primary)); flex: none; }
.cat-card__head h3 { margin: 0; font-size: 1.02rem; font-weight: 700; }
.cat-card__n { margin-left: auto; font-family: var(--font-mono); font-weight: 600; font-size: .82rem;
  padding: 2px 9px; border-radius: var(--r-full);
  color: var(--cat, var(--primary)); background: color-mix(in srgb, var(--cat, var(--primary)) 14%, transparent); }
.cat-card p { margin: 0; font-size: .86rem; color: var(--on-surface-variant); line-height: 1.5; }

/* ---------- dialog ---------- */
.dialog {
  width: min(680px, 92vw); max-height: 86vh; padding: 0; border: 0; border-radius: var(--r-xl);
  background: var(--surface-container-lowest); color: var(--on-surface); box-shadow: var(--e3); overflow: hidden;
}
.dialog::backdrop { background: var(--scrim); backdrop-filter: blur(2px); }
.dialog__bar { position: sticky; top: 0; display: flex; align-items: center; gap: 4px;
  padding: 8px 10px; background: var(--surface-container-lowest); border-bottom: 1px solid var(--outline-variant); }
.dialog__spacer { flex: 1; }
.dialog__body { padding: 22px clamp(20px, 4vw, 34px) 30px; overflow-y: auto; max-height: calc(86vh - 56px); }
.dialog__badges { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.dialog__body h2 { margin: 0 0 6px; font-family: var(--font-brand); font-size: 1.5rem; line-height: 1.25; }
.dialog__author { margin: 0 0 16px; font-size: .85rem; color: var(--on-surface-variant); }
.dialog__body > p { font-size: .98rem; line-height: 1.65; }
.dialog__source { margin-top: 18px; }
.dialog__source a { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; }
.dialog__source .material-symbols-rounded { font-size: 18px; }
.reality {
  margin-top: 20px; padding: 16px 18px; border-radius: var(--r-md);
  background: color-mix(in srgb, var(--c-growth) 11%, transparent);
  border: 1px solid color-mix(in srgb, var(--c-growth) 30%, transparent);
}
.reality h4 { display: flex; align-items: center; gap: 7px; margin: 0 0 8px; font-size: .9rem; color: var(--c-growth); }
.reality p { margin: 0; font-size: .9rem; line-height: 1.6; }
.reality__links { margin: 12px 0 0; padding-left: 18px; display: flex; flex-direction: column; gap: 5px; }
.reality__links a { font-size: .82rem; }

/* ---------- footer + to-top ---------- */
.site-foot { padding: 40px clamp(18px, 5vw, 40px) 60px; text-align: center; color: var(--on-surface-variant);
  font-size: .86rem; border-top: 1px solid var(--outline-variant); }
.site-foot a { font-weight: 600; }
.empty { text-align: center; color: var(--on-surface-variant); padding: 40px 0; }
.to-top {
  position: fixed; right: 20px; bottom: 20px; z-index: 40; width: 46px; height: 46px; border-radius: var(--r-full);
  display: grid; place-items: center; color: var(--on-primary); background: var(--primary); box-shadow: var(--e2);
  transition: transform var(--dur), opacity var(--dur);
}
.to-top:hover { transform: translateY(-3px); }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .viz-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
}