/* ============================================================
   APPLE · LIQUID GLASS — design system do site de estudo
   Vidro translúcido sobre aurora, tipografia SF, light + dark.
   ============================================================ */

:root {
  /* superfícies de vidro */
  --glass:        rgba(255,255,255,0.60);
  --glass-strong: rgba(255,255,255,0.78);
  --glass-thin:   rgba(255,255,255,0.42);
  --glass-border: rgba(255,255,255,0.70);
  --hairline:     rgba(0,0,0,0.08);
  --glass-shadow: 0 12px 40px rgba(22,30,55,0.14), 0 2px 8px rgba(22,30,55,0.06);
  --inner-hi:     inset 0 1px 0 rgba(255,255,255,0.75);
  --blur:         blur(26px) saturate(180%);
  --blur-strong:  blur(38px) saturate(190%);
  /* tinta */
  --ink:      #1d1d1f;
  --ink-soft: #34343b;
  --muted:    #6e6e76;
  --faint:    #9a9aa2;
  /* acento (Apple system blue → indigo) */
  --accent:      #0a84ff;
  --accent-2:    #0062d6;
  --accent-soft: rgba(10,132,255,0.16); --accent-tint: rgba(10,132,255,0.085);
  --accent-ink:  #0a6fd6;
  --green: #28b850;
  --amber: #e8920a;
  --red:   #ff3b30;
  /* fundo + aurora */
  --bg-1: #eef1f7;
  --bg-2: #e5e9f3;
  --au-1: rgba(120,140,178,0.20);
  --au-2: rgba(140,150,172,0.15);
  --au-3: rgba(118,136,170,0.12);
  --au-4: rgba(148,156,175,0.12);
  /* raios */
  --r-lg: 24px; --r-md: 18px; --r-sm: 12px;
  --serif: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, sans-serif;
  --sans:  -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --glass:        rgba(30,32,40,0.55);
    --glass-strong: rgba(44,46,57,0.72);
    --glass-thin:   rgba(40,42,52,0.40);
    --glass-border: rgba(255,255,255,0.13);
    --hairline:     rgba(255,255,255,0.09);
    --glass-shadow: 0 18px 50px rgba(0,0,0,0.55), 0 2px 10px rgba(0,0,0,0.40);
    --inner-hi:     inset 0 1px 0 rgba(255,255,255,0.15);
    --ink:      #f5f5f7;
    --ink-soft: #e4e4ea;
    --muted:    #a2a2ac;
    --faint:    #7b7b85;
    --accent:      #0a84ff;
    --accent-2:    #0a6fe0;
    --accent-soft: rgba(10,132,255,0.24); --accent-tint: rgba(10,132,255,0.16);
    --accent-ink:  #5fb0ff;
    --green: #30d158; --amber: #ff9f0a; --red: #ff453a;
    --bg-1: #05060a;
    --bg-2: #0c0e16;
    --au-1: rgba(56,86,140,0.30);
    --au-2: rgba(68,80,112,0.24);
    --au-3: rgba(48,66,108,0.20);
    --au-4: rgba(58,70,98,0.20);
  }
}
/* override manual */
:root[data-theme="light"] {
  --glass: rgba(255,255,255,0.60); --glass-strong: rgba(255,255,255,0.78); --glass-thin: rgba(255,255,255,0.42);
  --glass-border: rgba(255,255,255,0.70); --hairline: rgba(0,0,0,0.08);
  --glass-shadow: 0 12px 40px rgba(22,30,55,0.14), 0 2px 8px rgba(22,30,55,0.06);
  --inner-hi: inset 0 1px 0 rgba(255,255,255,0.75);
  --ink: #1d1d1f; --ink-soft: #34343b; --muted: #6e6e76; --faint: #9a9aa2;
  --accent: #0a84ff; --accent-2: #0062d6; --accent-soft: rgba(10,132,255,0.16); --accent-tint: rgba(10,132,255,0.085); --accent-ink: #0a6fd6;
  --green: #28b850; --amber: #e8920a; --red: #ff3b30;
  --bg-1: #eef1f7; --bg-2: #e5e9f3;
  --au-1: rgba(120,140,178,0.20); --au-2: rgba(140,150,172,0.15); --au-3: rgba(118,136,170,0.12); --au-4: rgba(148,156,175,0.12);
}
:root[data-theme="dark"] {
  --glass: rgba(30,32,40,0.55); --glass-strong: rgba(44,46,57,0.72); --glass-thin: rgba(40,42,52,0.40);
  --glass-border: rgba(255,255,255,0.13); --hairline: rgba(255,255,255,0.09);
  --glass-shadow: 0 18px 50px rgba(0,0,0,0.55), 0 2px 10px rgba(0,0,0,0.40);
  --inner-hi: inset 0 1px 0 rgba(255,255,255,0.15);
  --ink: #f5f5f7; --ink-soft: #e4e4ea; --muted: #a2a2ac; --faint: #7b7b85;
  --accent: #0a84ff; --accent-2: #0a6fe0; --accent-soft: rgba(10,132,255,0.24); --accent-tint: rgba(10,132,255,0.16); --accent-ink: #5fb0ff;
  --green: #30d158; --amber: #ff9f0a; --red: #ff453a;
  --bg-1: #05060a; --bg-2: #0c0e16;
  --au-1: rgba(56,86,140,0.30); --au-2: rgba(68,80,112,0.24); --au-3: rgba(48,66,108,0.20); --au-4: rgba(58,70,98,0.20);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: linear-gradient(180deg, var(--bg-1), var(--bg-2));
  background-attachment: fixed;
  min-height: 100vh;
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, .serif { font-family: var(--serif); font-weight: 600; letter-spacing: 0; }
a { color: var(--accent-ink); text-decoration: none; }
button { font-family: var(--sans); cursor: pointer; -webkit-tap-highlight-color: transparent; }
em { font-style: italic; }
::selection { background: var(--accent-soft); }

::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-thumb { background: rgba(140,140,150,.4); border-radius: 10px; border: 3px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-thumb:hover { background: rgba(140,140,150,.6); background-clip: content-box; }

/* ---------------- AURORA (atrás do vidro) ---------------- */
.aurora { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.aurora .blob { position: absolute; border-radius: 50%; filter: blur(72px); will-change: transform; }
.aurora .b1 { width: 52vw; height: 52vw; left: -12vw; top: -14vw;
  background: radial-gradient(circle at 32% 32%, var(--au-1), transparent 68%); animation: float1 28s ease-in-out infinite; }
.aurora .b2 { width: 46vw; height: 46vw; right: -10vw; top: -6vw;
  background: radial-gradient(circle at 60% 40%, var(--au-2), transparent 68%); animation: float2 32s ease-in-out infinite; }
.aurora .b3 { width: 44vw; height: 44vw; left: 8vw; bottom: -18vw;
  background: radial-gradient(circle at 40% 60%, var(--au-3), transparent 66%); animation: float3 36s ease-in-out infinite; }
.aurora .b4 { width: 40vw; height: 40vw; right: 2vw; bottom: -14vw;
  background: radial-gradient(circle at 50% 50%, var(--au-4), transparent 66%); animation: float1 30s ease-in-out infinite reverse; }
@keyframes float1 { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(6vw,5vh) scale(1.12); } }
@keyframes float2 { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(-5vw,6vh) scale(1.08); } }
@keyframes float3 { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(4vw,-5vh) scale(1.15); } }
@media (prefers-reduced-motion: reduce) { .aurora .blob { animation: none !important; } html { scroll-behavior: auto; } }

/* ---------------- TOP BAR ---------------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 16px;
  padding: 11px 20px;
  background: var(--glass);
  backdrop-filter: var(--blur-strong); -webkit-backdrop-filter: var(--blur-strong);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--inner-hi);
}
.brand { display: flex; flex-direction: column; line-height: 1.18; min-width: 0; }
.brand .eyebrow { font-size: 9px; letter-spacing: 0; text-transform: uppercase; color: var(--accent-ink); font-weight: 700; }
.brand .name { font-family: var(--serif); font-size: 16px; font-weight: 600; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.brand .name b { color: var(--accent-ink); }

.tabs { display: flex; gap: 3px; margin-left: 6px; padding: 4px; border-radius: 999px;
  background: var(--glass-thin); border: 1px solid var(--glass-border); box-shadow: var(--inner-hi);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
.tab { border: none; background: transparent; color: var(--muted); font-size: 13.5px; font-weight: 600;
  padding: 7px 18px; border-radius: 999px; transition: all .22s cubic-bezier(.4,0,.2,1); }
.tab:hover { color: var(--ink); }
.tab.active { background: var(--glass-strong); color: var(--ink); box-shadow: 0 4px 14px rgba(0,0,0,.10), var(--inner-hi); }

.topbar .spacer { flex: 1; }

.mastery { display: flex; align-items: center; gap: 9px; font-size: 12px; color: var(--muted); white-space: nowrap; }
.mastery .bar { width: 92px; height: 7px; border-radius: 999px; background: var(--glass-thin); overflow: hidden; box-shadow: inset 0 0 0 1px var(--hairline); }
.mastery .bar i { display: block; height: 100%; width: 0%; border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width .55s cubic-bezier(.4,0,.2,1); }
.mastery b { color: var(--ink); font-variant-numeric: tabular-nums; }

.icon-btn { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center;
  background: var(--glass); border: 1px solid var(--glass-border); box-shadow: var(--inner-hi), var(--glass-shadow);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); font-size: 17px; color: var(--ink);
  transition: transform .18s ease; }
.icon-btn:hover { transform: scale(1.07); }
.icon-btn:active { transform: scale(.94); }

/* ---------------- LAYOUT ---------------- */
.view { display: none; }
.view.active { display: block; animation: viewin .4s cubic-bezier(.2,.7,.2,1); }
@keyframes viewin { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.layout { display: grid; grid-template-columns: 248px 1fr; gap: 30px; max-width: 1200px; margin: 0 auto; padding: 26px 26px 90px; }
/* durante a busca: 1 coluna (TOC escondido) — evita o conteúdo cair na coluna estreita */
.layout.searching { grid-template-columns: 1fr; }
.layout.searching .toc { display: none; }
.layout.searching .content { max-width: 760px; }

/* glass utility base via box reuse — aplicado por componente */
.toc { position: sticky; top: 86px; align-self: start; max-height: calc(100vh - 110px); overflow: auto; padding: 10px; border-radius: var(--r-md);
  background: var(--glass); border: 1px solid var(--glass-border); box-shadow: var(--glass-shadow), var(--inner-hi);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
.toc-select { display: none; }
.toc .toc-title { font-size: 10px; letter-spacing: 0; text-transform: uppercase; color: var(--faint); font-weight: 700; margin: 4px 0 10px 10px; }
.toc a { display: flex; align-items: baseline; gap: 9px; padding: 8px 11px; border-radius: 10px; color: var(--muted);
  font-size: 13.5px; line-height: 1.3; transition: all .16s ease; border: 1px solid transparent; }
.toc a .n { font-size: 11px; color: var(--faint); min-width: 15px; font-variant-numeric: tabular-nums; }
.toc a span:last-child { min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.toc a:hover { background: var(--glass-thin); color: var(--ink); }
.toc a.active { background: var(--glass-strong); color: var(--accent-ink); font-weight: 600;
  border-color: var(--glass-border); box-shadow: 0 2px 10px rgba(0,0,0,.08), var(--inner-hi);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
.toc a.active .n { color: var(--accent-ink); }
.toc a.active .n { color: var(--accent-ink); }

.content { min-width: 0; }

/* search */
.searchwrap { position: relative; margin-bottom: 22px; }
.searchwrap input { width: 100%; padding: 13px 16px 13px 44px; border: 1px solid var(--glass-border); border-radius: 14px;
  background: var(--glass); color: var(--ink); font-size: 15px; font-family: var(--sans);
  box-shadow: var(--glass-shadow), var(--inner-hi); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  transition: box-shadow .18s ease, border-color .18s ease; }
.searchwrap input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft), var(--glass-shadow); }
.searchwrap input::placeholder { color: var(--faint); }
.searchwrap .ico { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); color: var(--accent-ink); font-size: 16px; }
.searchwrap .clear { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); background: none; border: none; color: var(--faint); font-size: 20px; line-height: 1; display: none; }
.search-empty { color: var(--muted); font-style: italic; padding: 24px 4px; display: none; }

/* sections */
section.block { margin: 0 0 16px; scroll-margin-top: 84px; padding-top: 20px; }
.section-label { font-size: 10px; letter-spacing: 0; text-transform: uppercase; color: var(--accent-ink); font-weight: 700; margin: 0 0 5px; }
.section-title { font-size: 28px; color: var(--ink); margin: 0 0 6px; line-height: 1.1; }
.section-intro { color: var(--muted); font-size: 15px; margin: 0 0 18px; max-width: 64ch; }
.divider { height: 1px; background: var(--hairline); border: none; margin: 30px 0; }
h3.sub { font-size: 18px; color: var(--ink); margin: 26px 0 10px; }

/* glass card */
.card { background: var(--glass); border: 1px solid var(--glass-border); border-radius: var(--r-md);
  padding: 18px 20px; margin: 12px 0; box-shadow: var(--glass-shadow), var(--inner-hi);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
.card.accent { background: var(--accent-tint); }
.card.accent strong { color: var(--accent-ink); }
.card p { margin: 0 0 8px; } .card p:last-child { margin-bottom: 0; }

/* callout — vidro de acento (líquido) */
.callout { background: linear-gradient(158deg, #2c2e34, #1b1c20); color: #fff;
  border: 1px solid rgba(255,255,255,.30); border-radius: var(--r-md); padding: 20px 24px; margin: 22px 0;
  box-shadow: 0 14px 40px rgba(15,20,35,.28), var(--inner-hi);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
.callout .serif { color: #fff; font-size: 18px; display: block; margin-bottom: 7px; }
.callout p { margin: 4px 0; font-size: 14.5px; color: rgba(255,255,255,.88); }
.callout strong { color: #fff; }

/* keyword grid */
.kw-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin: 14px 0; }
.kw { background: var(--glass); border: 1px solid var(--glass-border); border-radius: var(--r-md); padding: 16px 18px;
  box-shadow: var(--glass-shadow), var(--inner-hi); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
.kw h4 { margin: 0 0 6px; font-size: 15.5px; color: var(--accent-ink); }
.kw p { margin: 0; font-size: 13.5px; color: var(--muted); line-height: 1.55; }

/* SWOT */
.swot { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.swot .panel { background: var(--glass); border: 1px solid var(--glass-border); border-radius: var(--r-md); padding: 18px 20px;
  box-shadow: var(--glass-shadow), var(--inner-hi); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
.swot .panel h4 { margin: 0 0 12px; font-size: 12.5px; letter-spacing: 0; text-transform: uppercase; font-family: var(--sans); font-weight: 700; }
.swot .panel.up h4 { color: var(--green); }
.swot .panel.down h4 { color: var(--amber); }
.sg-item { position: relative; padding: 8px 0 8px 20px; font-size: 14px; line-height: 1.5; color: var(--ink-soft); }
.sg-item + .sg-item { border-top: 1px solid var(--hairline); }
.sg-item:before { content: ""; position: absolute; left: 2px; top: 14px; width: 8px; height: 8px; border-radius: 50%; }
.up .sg-item:before { background: var(--green); }
.down .sg-item:before { background: var(--amber); }
.sg-item strong { color: var(--ink); }

.tip-inline { font-size: 13.8px; color: var(--ink-soft); margin: 14px 0; background: var(--accent-soft);
  border: 1px solid var(--glass-border); border-radius: var(--r-sm); padding: 12px 15px; }
.tip-inline strong { color: var(--accent-ink); }

/* table */
.table-wrap { overflow-x: auto; border-radius: var(--r-md); box-shadow: var(--glass-shadow), var(--inner-hi); margin: 14px 0; border: 1px solid var(--glass-border); }
table.kpi { width: 100%; border-collapse: collapse; font-size: 14px; background: var(--glass); min-width: 520px;
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
table.kpi th { background: var(--glass-strong); color: var(--ink); text-align: left; padding: 12px 15px; font-weight: 700; font-family: var(--sans); border-bottom: 1px solid var(--hairline); }
table.kpi td { padding: 11px 15px; border-bottom: 1px solid var(--hairline); color: var(--ink-soft); }
table.kpi tr:last-child td { border-bottom: none; }

/* lists */
ol.tips { list-style: none; counter-reset: t; padding: 0; margin: 12px 0; }
ol.tips li { counter-increment: t; position: relative; padding: 5px 0 16px 46px; font-size: 14.5px; line-height: 1.55; }
ol.tips li:before { content: counter(t); position: absolute; left: 0; top: 0; width: 30px; height: 30px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2)); color: #fff; border-radius: 50%;
  text-align: center; line-height: 30px; font-weight: 700; font-size: 14px; box-shadow: 0 4px 12px var(--accent-soft), var(--inner-hi); }
ol.tips li strong { color: var(--ink); }
ul.clean { list-style: none; padding: 0; margin: 10px 0; }
ul.clean li { position: relative; padding: 7px 0 7px 24px; font-size: 14.5px; line-height: 1.5; }
ul.clean li:before { content: "—"; position: absolute; left: 0; color: var(--accent-ink); font-weight: 700; }
ul.clean.check li:before { content: "✓"; color: var(--green); font-weight: 800; }

/* question card */
.q { border: 1px solid var(--glass-border); border-radius: var(--r-md); overflow: hidden; background: var(--glass);
  margin: 16px 0; box-shadow: var(--glass-shadow), var(--inner-hi); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
.q-head { background: var(--glass-strong); color: var(--ink); padding: 15px 18px; font-family: var(--serif); font-size: 16px;
  font-weight: 600; line-height: 1.45; display: flex; gap: 10px; align-items: baseline; border-bottom: 1px solid var(--hairline); }
.q-head .num { color: var(--accent-ink); font-weight: 700; flex-shrink: 0; }
.q-body { padding: 16px 18px 18px; }
.q-tag { display: inline-block; font-size: 9.5px; letter-spacing: 0; text-transform: uppercase; padding: 4px 11px; border-radius: 999px; margin-bottom: 12px; font-weight: 700; }
.q-tag.tec { background: var(--accent-soft); color: var(--accent-ink); }
.q-tag.pol { background: rgba(232,146,10,.16); color: var(--amber); }
.why { font-size: 13px; color: var(--muted); font-style: italic; background: var(--glass-thin); border: 1px solid var(--hairline); border-radius: 10px; padding: 10px 13px; margin-bottom: 14px; }
.why strong { color: var(--ink-soft); font-style: normal; }
.answer { background: var(--glass-thin); border: 1px solid var(--hairline); border-radius: 12px; padding: 13px 15px; margin: 12px 0; }
.answer .lbl { font-size: 11px; letter-spacing: 0; text-transform: uppercase; color: var(--accent-ink); font-weight: 700; display: block; margin-bottom: 5px; }
.answer p { margin: 0; font-size: 14.5px; color: var(--ink-soft); line-height: 1.6; }
.connect { font-size: 13.5px; color: var(--ink-soft); margin-top: 12px; background: var(--accent-soft); border: 1px solid var(--glass-border); border-radius: 10px; padding: 11px 14px; }
.connect strong { color: var(--accent-ink); }

/* expander */
.q.collapsible .q-head { cursor: pointer; user-select: none; }
.q.collapsible .q-head:after { content: "+"; margin-left: auto; color: var(--accent-ink); font-size: 22px; line-height: 1; flex-shrink: 0; }
.q.collapsible.open .q-head:after { content: "−"; }
.q.collapsible .q-body { display: none; }
.q.collapsible.open .q-body { display: block; animation: fade .25s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }

/* cover hero */
.cover-hero { background: linear-gradient(158deg, #2c2e34, #1b1c20); color: #fff;
  border: 1px solid rgba(255,255,255,.28); border-radius: var(--r-lg); padding: 36px 36px; margin-bottom: 26px;
  box-shadow: 0 18px 50px rgba(15,20,35,.32), var(--inner-hi); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
.cover-hero .eyebrow { font-size: 10px; letter-spacing: 0; text-transform: uppercase; color: rgba(255,255,255,.85); font-weight: 700; margin-bottom: 12px; }
.cover-hero h1 { font-size: 38px; line-height: 1.06; margin: 0 0 8px; color: #fff; }
.cover-hero .sub { font-size: 16.5px; color: rgba(255,255,255,.86); margin-bottom: 18px; }
.cover-hero .meta { display: grid; gap: 5px; font-size: 13.5px; color: rgba(255,255,255,.82); border-top: 1px solid rgba(255,255,255,.25); padding-top: 16px; }
.cover-hero .meta b { color: #fff; }

/* ================= SIMULADO ================= */
.sim { max-width: 900px; margin: 0 auto; padding: 28px 22px 90px; }
.sim-modes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 8px 0 26px; }
.mode-card { text-align: left; background: var(--glass); border: 1px solid var(--glass-border); border-radius: var(--r-md); padding: 22px;
  box-shadow: var(--glass-shadow), var(--inner-hi); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  transition: transform .2s cubic-bezier(.2,.7,.2,1), box-shadow .2s ease; }
.mode-card:hover { transform: translateY(-4px); box-shadow: 0 22px 56px rgba(22,30,55,.18), var(--inner-hi); }
.mode-card .mc-ico { font-size: 26px; margin-bottom: 10px; }
.mode-card h3 { margin: 0 0 6px; font-size: 17.5px; color: var(--ink); }
.mode-card p { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.5; }

.sim-intro h2 { font-size: 28px; margin: 0 0 6px; }
.sim-intro p.lead { color: var(--muted); font-size: 15px; margin: 0 0 8px; max-width: 60ch; }

/* weak spots */
.weak { background: var(--glass); border: 1px solid var(--glass-border); border-radius: var(--r-md);
  padding: 16px 18px; margin: 22px 0 6px; box-shadow: var(--glass-shadow), var(--inner-hi); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
.weak h4 { margin: 0 0 10px; font-size: 14.5px; color: var(--amber); }
.weak .chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { display: inline-flex; align-items: center; gap: 6px; background: rgba(232,146,10,.14); border: 1px solid var(--glass-border); color: var(--amber); font-size: 12px; padding: 6px 12px; border-radius: 999px; font-weight: 600; transition: transform .15s ease; }
.chip:hover { transform: scale(1.05); }
.weak .empty { color: var(--muted); font-style: italic; font-size: 13.5px; }

/* runner */
.runner { background: var(--glass); border: 1px solid var(--glass-border); border-radius: var(--r-lg); box-shadow: var(--glass-shadow), var(--inner-hi);
  overflow: hidden; backdrop-filter: var(--blur-strong); -webkit-backdrop-filter: var(--blur-strong); animation: fade .3s ease; }
.runner-top { display: flex; align-items: center; gap: 14px; padding: 14px 20px; border-bottom: 1px solid var(--hairline); flex-wrap: wrap; }
.runner-top .meta { font-size: 12.5px; color: var(--muted); display: flex; align-items: center; gap: 10px; }
.runner-top .meta .pill { background: var(--glass-thin); padding: 4px 11px; border-radius: 999px; font-weight: 600; color: var(--ink-soft); border: 1px solid var(--hairline); }
.runner-top .meta .pill.pol { background: rgba(232,146,10,.16); color: var(--amber); }
.runner-top .meta .pill.tec { background: var(--accent-soft); color: var(--accent-ink); }
.runner-top .spacer { flex: 1; }
.timer { font-variant-numeric: tabular-nums; font-family: var(--serif); font-size: 15px; color: var(--ink); background: var(--glass-thin); padding: 5px 13px; border-radius: 999px; border: 1px solid var(--hairline); }
.timer.warn { color: #fff; background: var(--red); border-color: transparent; }
.btn-mini { border: 1px solid var(--glass-border); background: var(--glass); color: var(--muted); border-radius: 10px; padding: 7px 13px; font-size: 12.5px; font-weight: 600; box-shadow: var(--inner-hi); transition: all .15s ease; }
.btn-mini:hover { color: var(--ink); transform: translateY(-1px); }

.progress-line { height: 4px; background: var(--glass-thin); }
.progress-line i { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width .4s cubic-bezier(.4,0,.2,1); }

.stage { padding: 28px 30px 30px; }
.stage .q-prompt { font-family: var(--serif); font-size: 23px; line-height: 1.35; color: var(--ink); margin: 6px 0 4px; font-weight: 600; }
.stage .q-id { font-size: 12px; letter-spacing: 0; text-transform: uppercase; color: var(--accent-ink); font-weight: 700; }

.draft { width: 100%; margin: 18px 0 4px; min-height: 100px; resize: vertical; padding: 14px 16px; border: 1px solid var(--glass-border); border-radius: 14px;
  background: var(--glass-thin); font-family: var(--sans); font-size: 14.5px; color: var(--ink); line-height: 1.55; box-shadow: var(--inner-hi); }
.draft:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.draft::placeholder { color: var(--faint); }
.draft-hint { font-size: 12px; color: var(--faint); margin: 2px 2px 0; }

.reveal { margin-top: 18px; animation: fade .3s ease; }
.reveal .why { margin-bottom: 16px; }
.postura { font-size: 13.5px; margin-top: 14px; background: linear-gradient(158deg, #2c2e34, #1b1c20); color: #fff; border-radius: 12px; padding: 12px 15px; box-shadow: var(--inner-hi); }
.postura strong { color: #fff; }

.actions { display: flex; gap: 12px; margin-top: 22px; flex-wrap: wrap; align-items: center; }
.btn { border: none; border-radius: 14px; padding: 12px 22px; font-size: 14.5px; font-weight: 600; transition: transform .16s ease, filter .16s ease, box-shadow .16s ease; }
.btn.primary { background: linear-gradient(180deg, var(--accent), var(--accent-2)); color: #fff; box-shadow: 0 8px 22px var(--accent-soft), var(--inner-hi); }
.btn.primary:hover { transform: translateY(-1px); filter: brightness(1.06); }
.btn.primary:active { transform: scale(.98); }
.btn.ghost { background: var(--glass); color: var(--ink); border: 1px solid var(--glass-border); box-shadow: var(--inner-hi); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
.btn.ghost:hover { transform: translateY(-1px); }
.btn:disabled { opacity: .4; pointer-events: none; }
.btn.lg { padding: 13px 26px; }

.rate-row { display: flex; gap: 12px; margin-top: 22px; flex-wrap: wrap; }
.rate { flex: 1; min-width: 130px; border: 1px solid var(--glass-border); background: var(--glass); border-radius: 16px; padding: 15px 12px; text-align: center;
  box-shadow: var(--inner-hi); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); transition: transform .15s ease, border-color .15s ease, background .15s ease; }
.rate:hover { transform: translateY(-2px); }
.rate .em { font-size: 21px; display: block; margin-bottom: 4px; }
.rate .t { font-size: 13.5px; font-weight: 700; }
.rate .k { font-size: 10.5px; color: var(--faint); display: block; margin-top: 2px; }
.rate.good .t { color: var(--green); } .rate.good:hover, .rate.good.sel { border-color: var(--green); background: rgba(40,184,80,.14); }
.rate.mid .t { color: var(--amber); } .rate.mid:hover, .rate.mid.sel { border-color: var(--amber); background: rgba(232,146,10,.14); }
.rate.bad .t { color: var(--red); } .rate.bad:hover, .rate.bad.sel { border-color: var(--red); background: rgba(255,59,48,.14); }

.nav-row { display: flex; justify-content: space-between; align-items: center; margin-top: 24px; gap: 10px; }
.kbd { display: inline-block; min-width: 18px; text-align: center; font-family: var(--sans); font-size: 11px; padding: 2px 6px; border: 1px solid var(--glass-border); border-bottom-width: 2px; border-radius: 6px; background: var(--glass-thin); color: var(--muted); }
.shortcuts { font-size: 11.5px; color: var(--faint); margin-top: 18px; text-align: center; }
.shortcuts .kbd { margin: 0 1px; }

/* summary */
.summary { text-align: center; padding: 16px 6px; }
.summary .ring { width: 140px; height: 140px; margin: 8px auto 16px; border-radius: 50%; display: grid; place-items: center;
  background: conic-gradient(var(--accent) 0deg, var(--accent-2) calc(var(--deg,0deg) * .5), var(--green) var(--deg,0deg), var(--glass-thin) 0deg);
  box-shadow: var(--glass-shadow); }
.summary .ring .inner { width: 110px; height: 110px; border-radius: 50%; background: var(--glass-strong); display: grid; place-items: center; backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
.summary .ring .pct { font-family: var(--serif); font-size: 32px; color: var(--ink); font-weight: 600; }
.summary h2 { font-size: 25px; margin: 4px 0; }
.summary .tally { display: flex; justify-content: center; gap: 16px; margin: 18px 0 6px; flex-wrap: wrap; }
.summary .tally .t { background: var(--glass); border: 1px solid var(--glass-border); border-radius: 14px; padding: 13px 20px; min-width: 90px; box-shadow: var(--inner-hi); }
.summary .tally .t b { display: block; font-family: var(--serif); font-size: 23px; }
.summary .tally .t span { font-size: 11.5px; color: var(--muted); }
.summary .tally .good b { color: var(--green); }
.summary .tally .mid b { color: var(--amber); }
.summary .tally .bad b { color: var(--red); }

/* setup */
.setup { background: var(--glass); border: 1px solid var(--glass-border); border-radius: var(--r-md); padding: 22px 24px; box-shadow: var(--glass-shadow), var(--inner-hi); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
.setup h3 { margin: 0 0 4px; font-size: 18px; }
.setup p.d { color: var(--muted); font-size: 13.5px; margin: 0 0 18px; }
.opt-row { display: flex; align-items: center; gap: 12px; padding: 14px 0; border-top: 1px solid var(--hairline); flex-wrap: wrap; }
.opt-row:first-of-type { border-top: none; }
.opt-row .lab { font-size: 14px; font-weight: 600; }
.opt-row .desc { font-size: 12.5px; color: var(--muted); }
.opt-row .grow { flex: 1; }
.seg { display: inline-flex; background: var(--glass-thin); padding: 3px; border-radius: 999px; gap: 2px; border: 1px solid var(--glass-border); box-shadow: var(--inner-hi); }
.seg button { border: none; background: transparent; color: var(--muted); font-size: 12.5px; font-weight: 600; padding: 7px 15px; border-radius: 999px; transition: all .18s ease; }
.seg button.on { background: var(--glass-strong); color: var(--ink); box-shadow: 0 2px 8px rgba(0,0,0,.10), var(--inner-hi); }

/* filter chips */
.filterbar { display: flex; gap: 8px; flex-wrap: wrap; margin: 4px 0 20px; }
.fchip { border: 1px solid var(--glass-border); background: var(--glass); color: var(--muted); border-radius: 999px; padding: 9px 17px; font-size: 13px; font-weight: 600;
  box-shadow: var(--inner-hi); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); transition: all .16s ease; }
.fchip:hover { color: var(--ink); transform: translateY(-1px); }
.fchip.on { background: linear-gradient(180deg, var(--accent), var(--accent-2)); color: #fff; border-color: transparent; box-shadow: 0 6px 16px var(--accent-soft); }
.fchip .c { opacity: .7; margin-left: 5px; font-size: 11px; }

.reset-link { background: none; border: none; color: var(--faint); font-size: 12px; text-decoration: underline; }
.reset-link:hover { color: var(--red); }
.foot { text-align: center; color: var(--faint); font-size: 12px; padding: 30px 20px; line-height: 1.6; }

/* ---------------- RESPONSIVE ---------------- */
@media (max-width: 880px) {
  .layout { grid-template-columns: 1fr; gap: 16px; padding: 18px 16px 80px; }
  .toc {
    position: static;
    max-height: none;
    margin: 0 0 4px;
    padding: 0;
    overflow: visible;
    border: 0;
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .toc-inner { display: none; }
  .toc .toc-title { display: none; }
  .toc-select { display: grid; gap: 6px; }
  .toc-select span {
    font-size: 10px;
    letter-spacing: 0;
    text-transform: uppercase;
    color: var(--faint);
    font-weight: 700;
    padding-left: 2px;
  }
  .toc-select select {
    width: 100%;
    min-height: 46px;
    border: 1px solid var(--glass-border);
    border-radius: 14px;
    background: var(--glass);
    color: var(--ink);
    font: 600 14px var(--sans);
    padding: 0 40px 0 14px;
    box-shadow: var(--glass-shadow), var(--inner-hi);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
  }
  .toc-select select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft), var(--glass-shadow); }
  .swot { grid-template-columns: 1fr; }
  .sim-modes { grid-template-columns: 1fr; }
  .topbar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto;
    grid-template-areas:
      "brand mastery theme"
      "tabs tabs tabs";
    gap: 8px 10px;
    align-items: center;
    padding: 9px 12px 10px;
  }
  .brand { grid-area: brand; overflow: hidden; }
  .brand .full-title { display: none; }
  .brand .eyebrow { font-size: 8.5px; letter-spacing: 0; }
  .brand .name { font-size: 17px; }
  .tabs { grid-area: tabs; width: 100%; margin-left: 0; display: grid; grid-template-columns: 1fr 1fr; }
  .tab { width: 100%; padding: 8px 10px; text-align: center; }
  .topbar .spacer { display: none; }
  .mastery {
    grid-area: mastery;
    justify-self: end;
    height: 34px;
    padding: 0 10px;
    border: 1px solid var(--glass-border);
    border-radius: 999px;
    background: var(--glass-thin);
    box-shadow: var(--inner-hi);
  }
  .mastery .lbl,
  .mastery .bar { display: none; }
  .icon-btn { grid-area: theme; width: 34px; height: 34px; font-size: 15px; }
  .section-title { font-size: 23px; }
  .cover-hero { padding: 28px 22px; } .cover-hero h1 { font-size: 29px; }
  .stage { padding: 22px 18px 24px; } .stage .q-prompt { font-size: 20px; }
}
@media (max-width: 680px) {
  .layout { padding: 14px 12px 76px; }
  .searchwrap { margin-bottom: 16px; }
  .searchwrap input { font-size: 14px; padding-right: 40px; }
}
@media (max-width: 560px) {
  .rate { min-width: 100%; }
}
@media (max-width: 360px) {
  .topbar { grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: "brand theme" "tabs tabs"; }
  .mastery { display: none; }
}