/* Sanu Varghese — site styles (Fluent-inspired, light + dark) */
:root {
  --bg: #FFFFFF;
  --bg-alt: #F5F7FA;
  --surface: #FFFFFF;
  --surface-2: #F3F3F3;
  --ink: #1B1B1B;
  --muted: #5C5C5C;
  --line: #E1E1E1;
  --brand: #0F6CBD;
  --brand-hover: #0C5AA0;
  --brand-ink: #FFFFFF;
  --brand-soft: #EBF3FC;
  --shadow: 0 1px 2px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.06);
  --shadow-lg: 0 2px 6px rgba(0,0,0,.08), 0 16px 40px rgba(0,0,0,.10);
  --c-ms: #0F6CBD;  --c-ms-bg: #EBF3FC;
  --c-ai: #6B3FC4;  --c-ai-bg: #F2EDFC;
  --c-sec: #B4161F; --c-sec-bg: #FDECEE;
  --c-net: #0B7A75; --c-net-bg: #E6F5F4;
  --c-claude: #A44B12; --c-claude-bg: #FCF0E7;
  --c-gen: #4A4A4A; --c-gen-bg: #EFEFEF;
  --max: 80rem;
  --read: 46rem;
  --radius: 8px;
  --font: "Segoe UI Variable Text", "Segoe UI Variable", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Segoe UI Variable Display", "Segoe UI Variable", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "Cascadia Mono", "Cascadia Code", Consolas, "SF Mono", Menlo, monospace;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #141414;
  --bg-alt: #1A1A1A;
  --surface: #232323;
  --surface-2: #2B2B2B;
  --ink: #F3F3F3;
  --muted: #B0B0B0;
  --line: #353535;
  --brand: #479EF5;
  --brand-hover: #62ABF5;
  --brand-ink: #0A0A0A;
  --brand-soft: #0E2B47;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 4px 16px rgba(0,0,0,.3);
  --shadow-lg: 0 2px 6px rgba(0,0,0,.5), 0 16px 40px rgba(0,0,0,.45);
  --c-ms: #62ABF5;  --c-ms-bg: #0E2B47;
  --c-ai: #B79BF5;  --c-ai-bg: #2A1F44;
  --c-sec: #F1707B; --c-sec-bg: #3F1519;
  --c-net: #4DC9C2; --c-net-bg: #0E3332;
  --c-claude: #F0A46C; --c-claude-bg: #3D2412;
  --c-gen: #D0D0D0; --c-gen-bg: #333333;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--font); font-size: 1rem; line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }
a { color: var(--brand); text-underline-offset: 3px; }
a:hover { color: var(--brand-hover); }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 4px; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.01em; line-height: 1.2; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 1.25rem; }
@media (min-width: 64rem) { .wrap { padding: 0 2rem; } }
.read { max-width: var(--read); margin: 0 auto; padding: 0 1.25rem; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: .5rem; background: var(--brand); color: var(--brand-ink); padding: .5rem 1rem; z-index: 100; }
.skip:focus { left: .5rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(16px); -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; gap: 1.5rem; height: 3.5rem; }
.brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--ink); white-space: nowrap; }
.brand:hover { color: var(--ink); }
.brand .mark {
  position: relative; width: 2rem; height: 2rem; border-radius: 7px; display: grid; place-items: center; overflow: visible;
  background: linear-gradient(135deg, #0F6CBD, #6B3FC4, #0B7A75, #0F6CBD); background-size: 300% 300%;
  color: #fff; font-weight: 700; font-size: .85rem; letter-spacing: .02em;
  animation: logo-shift 8s ease-in-out infinite;
}
.brand .mark b { position: relative; z-index: 1; font-weight: 700; animation: logo-in .7s cubic-bezier(.2,.8,.2,1) both; }
.brand .mark i {
  position: absolute; inset: 0; border-radius: 7px; overflow: hidden; pointer-events: none;
}
.brand .mark i::after {
  content: ""; position: absolute; top: -50%; left: -120%; width: 60%; height: 200%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.55), transparent); transform: rotate(20deg);
  animation: logo-shine 5s ease-in-out 1s infinite;
}
.brand .mark .orbit { position: absolute; inset: -5px; border-radius: 50%; animation: logo-orbit 6s linear infinite; pointer-events: none; }
.brand .mark .orbit::before {
  content: ""; position: absolute; top: -1px; left: 50%; width: 6px; height: 6px; margin-left: -3px; border-radius: 50%;
  background: #3CC4BB; box-shadow: 0 0 8px #3CC4BB;
}
.brand:hover .mark { animation-duration: 2s; }
@keyframes logo-shift { 0%, 100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }
@keyframes logo-shine { 0%, 60% { left: -120%; } 85%, 100% { left: 160%; } }
@keyframes logo-orbit { to { transform: rotate(360deg); } }
@keyframes logo-in { from { opacity: 0; transform: translateY(6px) scale(.8); } }
@media (prefers-reduced-motion: reduce) {
  .brand .mark, .brand .mark b, .brand .mark i::after, .brand .mark .orbit { animation: none; }
}
.brand .name { font-family: var(--font-display); font-weight: 600; font-size: 1.12rem; }
.brand .sep { width: 1px; height: 1.2rem; background: var(--line); }
.brand .role { color: var(--muted); font-size: .9rem; }
@media (max-width: 40rem) { .brand .sep, .brand .role { display: none; } }

.site-nav { display: flex; gap: .2rem; }
.site-nav a {
  color: var(--ink); text-decoration: none; font-size: .93rem; padding: .45rem .7rem; border-radius: 6px;
}
.site-nav a:hover { background: var(--surface-2); color: var(--ink); }
.site-nav a[aria-current="page"] { color: var(--brand); box-shadow: inset 0 -2px 0 var(--brand); border-radius: 0; }
.header-tools { margin-left: auto; display: flex; align-items: center; gap: .25rem; }
.icon-btn {
  width: 2.4rem; height: 2.4rem; display: grid; place-items: center; border-radius: 6px;
  background: transparent; border: 0; color: var(--ink); cursor: pointer;
}
.icon-btn:hover { background: var(--surface-2); }
.icon-btn svg { width: 1.2rem; height: 1.2rem; }
.theme-toggle .moon { display: none; }
:root[data-theme="dark"] .theme-toggle .sun { display: none; }
:root[data-theme="dark"] .theme-toggle .moon { display: block; }
.menu-btn { display: none; }

@media (max-width: 62rem) {
  .menu-btn { display: grid; }
  .site-nav {
    display: none; position: absolute; top: 3.5rem; left: 0; right: 0;
    flex-direction: column; gap: 0; padding: .5rem 1rem 1rem;
    background: var(--bg); border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: .8rem .5rem; border-bottom: 1px solid var(--line); border-radius: 0; }
  .site-nav a[aria-current="page"] { box-shadow: inset 3px 0 0 var(--brand); padding-left: .9rem; }
}

/* ---------- Buttons, chips ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem; text-decoration: none; font: inherit; font-weight: 600; font-size: .95rem;
  padding: .6rem 1.15rem; border-radius: 6px; cursor: pointer;
  border: 1px solid var(--line); color: var(--ink); background: var(--surface);
  transition: background .15s, border-color .15s;
}
.btn:hover { color: var(--ink); background: var(--surface-2); }
.btn.primary { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
.btn.primary:hover { background: var(--brand-hover); border-color: var(--brand-hover); color: var(--brand-ink); }
.btn svg { width: 1rem; height: 1rem; }
.buttons { display: flex; flex-wrap: wrap; gap: .7rem; }
.link-arrow { font-weight: 600; text-decoration: none; display: inline-flex; align-items: center; gap: .35rem; }
.link-arrow::after { content: "›"; font-size: 1.2em; line-height: 1; transition: transform .15s; }
.link-arrow:hover::after { transform: translateX(3px); }

.cat {
  display: inline-block; font-size: .75rem; font-weight: 600; letter-spacing: .02em;
  padding: .12rem .55rem; border-radius: 4px; color: var(--c-gen); background: var(--c-gen-bg);
}
.cat.ms, .cat.backup { color: var(--c-ms); background: var(--c-ms-bg); }
.cat.ai, .cat.openai { color: var(--c-ai); background: var(--c-ai-bg); }
.cat.claude, .cat.oss { color: var(--c-claude); background: var(--c-claude-bg); }
.cat.sec, .cat.spam { color: var(--c-sec); background: var(--c-sec-bg); }
.cat.net, .cat.cisco, .cat.unifi { color: var(--c-net); background: var(--c-net-bg); }

.level { font-size: .75rem; font-weight: 600; border-radius: 4px; padding: .12rem .55rem; }
.level.beginner { color: var(--c-net); background: var(--c-net-bg); }
.level.intermediate { color: var(--c-ai); background: var(--c-ai-bg); }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; background: var(--bg-alt); border-bottom: 1px solid var(--line); }
.hero-art { position: absolute; inset: 0; pointer-events: none; }
.hero-art span {
  position: absolute; border-radius: 50%; filter: blur(60px); opacity: .55;
  animation: drift 18s ease-in-out infinite alternate;
}
.hero-art span:nth-child(1) { width: 34rem; height: 34rem; right: -6rem; top: -10rem; background: #4F9DEB; }
.hero-art span:nth-child(2) { width: 26rem; height: 26rem; right: 14rem; bottom: -12rem; background: #9C7BEA; animation-duration: 22s; animation-delay: -6s; }
.hero-art span:nth-child(3) { width: 20rem; height: 20rem; right: 2rem; bottom: -4rem; background: #3CC4BB; animation-duration: 26s; animation-delay: -12s; opacity: .4; }
:root[data-theme="dark"] .hero-art span { opacity: .28; }
@keyframes drift {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-3rem, 2rem) scale(1.08); }
  100% { transform: translate(2rem, -1.5rem) scale(.95); }
}
.hero .wrap {
  position: relative; display: grid; gap: 2.5rem; align-items: center;
  grid-template-columns: 1fr; padding-top: 3.5rem; padding-bottom: 3.5rem;
}
@media (min-width: 60rem) { .hero .wrap { grid-template-columns: 1.25fr 1fr; padding-top: 5rem; padding-bottom: 5rem; } }
.eyebrow { font-size: .95rem; font-weight: 600; color: var(--brand); margin: 0 0 .8rem; }
.hero h1 { font-size: clamp(2.2rem, 5.2vw, 3.6rem); line-height: 1.08; letter-spacing: -0.025em; margin: 0 0 1rem; max-width: 18ch; }
.hero h1 .grad { background: linear-gradient(90deg, #0F6CBD, #6B3FC4 60%, #0B7A75); -webkit-background-clip: text; background-clip: text; color: transparent; }
:root[data-theme="dark"] .hero h1 .grad { background-image: linear-gradient(90deg, #62ABF5, #B79BF5 60%, #4DC9C2); }
.hero .intro { font-size: 1.15rem; color: var(--muted); max-width: 36rem; margin: 0 0 1.8rem; }

.today-card {
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow-lg); padding: 1.4rem;
}
.today-card .date { font-size: .85rem; color: var(--muted); display: flex; justify-content: space-between; gap: 1rem; }
.today-card .clock { font-family: var(--mono); }
.today-card h2 { font-size: 1.15rem; margin: .3rem 0 1rem; }
.today-list { list-style: none; margin: 0; padding: 0; }
.today-list li { padding: .65rem 0; border-top: 1px solid var(--line); }
.today-list a { color: var(--ink); text-decoration: none; font-weight: 600; font-size: .95rem; display: block; margin-top: .25rem; line-height: 1.35; }
.today-list a:hover { color: var(--brand); }
.today-card .mini-weather { display: flex; align-items: center; gap: .8rem; padding: .8rem; margin-bottom: 1rem; border-radius: 8px; background: var(--brand-soft); }
.mini-weather .wx-icon { width: 2.4rem; height: 2.4rem; flex: none; }
.mini-weather .temp { font-size: 1.6rem; font-weight: 600; line-height: 1; }
.mini-weather .desc { font-size: .85rem; color: var(--muted); }

/* ---------- Sections ---------- */
.section { padding: 3.5rem 0; }
.section.alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.section-head h2 { font-size: clamp(1.5rem, 3.4vw, 2rem); margin: 0; }
.section-head p { color: var(--muted); margin: .3rem 0 0; }

.page-head { padding: 3rem 0 2.2rem; background: var(--bg-alt); border-bottom: 1px solid var(--line); }
.page-head h1 { font-size: clamp(2rem, 5vw, 2.8rem); margin: 0 0 .6rem; }
.page-head p { color: var(--muted); font-size: 1.1rem; max-width: 44rem; margin: 0; }
.crumbs { font-size: .85rem; color: var(--muted); margin-bottom: .8rem; }
.crumbs a { color: var(--muted); }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(17.5rem, 1fr)); }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr)); }
.card {
  position: relative; display: flex; flex-direction: column; gap: .4rem;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.3rem; text-decoration: none; color: var(--ink); box-shadow: var(--shadow);
  transition: box-shadow .2s, transform .2s;
}
a.card:hover { color: var(--ink); box-shadow: var(--shadow-lg); transform: translateY(-2px); }
a.card:hover h3 { color: var(--brand); }
.card h3 { font-size: 1.12rem; margin: .35rem 0 .1rem; transition: color .15s; }
.card p { color: var(--muted); margin: 0; flex: 1; font-size: .95rem; }
.card .meta { font-size: .82rem; color: var(--muted); margin-top: .6rem; }
.card-top { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }
.card .bar { position: absolute; left: 0; right: 0; top: 0; height: 3px; border-radius: var(--radius) var(--radius) 0 0; background: var(--c-gen); }
.card .bar.ms, .card .bar.backup { background: var(--c-ms); } .card .bar.ai, .card .bar.openai { background: var(--c-ai); }
.card .bar.claude, .card .bar.oss { background: var(--c-claude); } .card .bar.sec, .card .bar.spam { background: var(--c-sec); }
.card .bar.net, .card .bar.cisco, .card .bar.unifi { background: var(--c-net); }
.icon { width: 2.5rem; height: 2.5rem; border-radius: 8px; display: grid; place-items: center; background: var(--brand-soft); color: var(--brand); }
.icon svg { width: 1.35rem; height: 1.35rem; }

/* Filter chips */
.filters { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.5rem; }
.chip {
  font: inherit; font-size: .88rem; cursor: pointer; color: var(--ink); background: var(--surface);
  border: 1px solid var(--line); border-radius: 999px; padding: .3rem .95rem;
}
.chip:hover { background: var(--surface-2); }
.chip[aria-pressed="true"] { color: var(--brand-ink); background: var(--brand); border-color: var(--brand); }

/* ---------- Weather widget ---------- */
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); padding: 1.4rem; }
.panel h2 { font-size: 1.25rem; margin: 0; }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.weather-now { display: flex; align-items: center; gap: 1rem; }
.weather-now .wx-icon { width: 4rem; height: 4rem; flex: none; }
.weather-now .temp { font-size: 3rem; font-weight: 600; line-height: 1; }
.weather-now .place { font-weight: 600; }
.weather-now .desc, .weather-meta { color: var(--muted); font-size: .9rem; }
.weather-meta { display: flex; gap: 1.2rem; flex-wrap: wrap; margin: .9rem 0 1.1rem; }
.forecast { display: grid; grid-template-columns: repeat(4, 1fr); gap: .5rem; }
.forecast div { text-align: center; padding: .6rem .3rem; border-radius: 8px; background: var(--surface-2); font-size: .85rem; }
.forecast .wx-icon { width: 1.8rem; height: 1.8rem; display: block; margin: .2rem auto; }
.forecast b { display: block; }
.forecast span { color: var(--muted); }
.city-form { display: flex; gap: .5rem; margin-top: 1rem; }
.city-form input {
  flex: 1; min-width: 0; font: inherit; font-size: .92rem; padding: .5rem .75rem; border-radius: 6px;
  border: 1px solid var(--line); background: var(--bg); color: var(--ink);
}
.city-form input:focus { outline: 2px solid var(--brand); outline-offset: 0; border-color: transparent; }
.small { font-size: .8rem; color: var(--muted); }
.small a { color: var(--muted); }
.wx-icon { color: var(--brand); }
.wx-icon .sunc { color: #E8A317; }

/* Fact */
.fact-text { font-size: 1.2rem; line-height: 1.55; margin: .4rem 0 1.2rem; font-family: var(--font-display); }
.fact-tag { font-size: .8rem; color: var(--muted); }
.fact-list { counter-reset: f; list-style: none; padding: 0; margin: 0; display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(20rem, 1fr)); }
.fact-list li { counter-increment: f; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.2rem 1.1rem 3.4rem; position: relative; box-shadow: var(--shadow); }
.fact-list li::before { content: counter(f); position: absolute; left: 1rem; top: 1.05rem; width: 1.7rem; height: 1.7rem; border-radius: 50%; display: grid; place-items: center; font-size: .8rem; font-weight: 700; color: var(--brand); background: var(--brand-soft); }
.fact-list li span { display: block; font-size: .78rem; color: var(--muted); margin-top: .35rem; }

/* Numbers */
.numbers { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); }
.numbers div { background: var(--surface); padding: 1.4rem; }
.numbers b { display: block; font-family: var(--font-display); font-size: 2rem; font-weight: 600; color: var(--brand); line-height: 1.1; }
.numbers span { display: block; font-weight: 600; margin-top: .4rem; }
.numbers p { color: var(--muted); font-size: .88rem; margin: .3rem 0 0; }

.stack { display: flex; flex-wrap: wrap; gap: .5rem; }
.stack span { font-size: .88rem; border: 1px solid var(--line); background: var(--surface); border-radius: 6px; padding: .35rem .75rem; }

/* Reveal */
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity .5s ease, transform .5s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .hero-art span { animation: none; }
}

/* ---------- Articles ---------- */
.progress { position: fixed; top: 0; left: 0; height: 3px; width: 0; background: var(--brand); z-index: 60; }
article { padding: 2.5rem 0 3.5rem; }
article h1 { font-size: clamp(1.9rem, 5vw, 2.6rem); margin: .7rem 0 1rem; }
article h2 { font-size: 1.4rem; margin: 2.3rem 0 .6rem; }
article h3 { font-size: 1.12rem; margin: 1.6rem 0 .4rem; }
article .lede { font-size: 1.18rem; color: var(--muted); }
article ul, article ol { padding-left: 1.3rem; }
article li { margin: .35rem 0; }
.article-meta { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; font-size: .88rem; color: var(--muted); }
code { font-family: var(--mono); font-size: .88em; background: var(--surface-2); border-radius: 4px; padding: .1rem .35rem; }
pre {
  position: relative; background: #1E1E1E; color: #E8E8E8; border-radius: 8px;
  padding: 1rem 1.1rem; overflow-x: auto; font-size: .88rem; line-height: 1.55;
}
pre code { background: none; padding: 0; color: inherit; }
.copy-btn {
  position: absolute; top: .45rem; right: .45rem; font: inherit; font-size: .75rem; cursor: pointer;
  color: #E8E8E8; background: #333; border: 1px solid #474747; border-radius: 4px; padding: .15rem .55rem;
}
.copy-btn:hover { background: #444; }
table { width: 100%; border-collapse: collapse; margin: 1.2rem 0; font-size: .93rem; display: block; overflow-x: auto; }
th, td { text-align: left; padding: .6rem .7rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
.note { background: var(--brand-soft); border-left: 4px solid var(--brand); border-radius: 6px; padding: 1rem 1.1rem; margin: 1.5rem 0; }
.note.warn { background: color-mix(in srgb, #F2C94C 16%, var(--bg)); border-left-color: #C98A00; }
.steps { counter-reset: step; list-style: none; padding-left: 0 !important; }
.steps > li { counter-increment: step; position: relative; padding-left: 2.6rem; margin: 1rem 0; }
.steps > li::before {
  content: counter(step); position: absolute; left: 0; top: .05rem;
  width: 1.75rem; height: 1.75rem; border-radius: 50%; display: grid; place-items: center;
  font-size: .82rem; font-weight: 700; color: var(--brand-ink); background: var(--brand);
}
.back { display: inline-block; margin-top: 2.5rem; }

/* Daily brief items */
.brief-item { border-top: 1px solid var(--line); padding: 1.6rem 0; }
.brief-item:first-of-type { border-top: 0; }
.brief-item h2 { margin: .5rem 0 .5rem; font-size: 1.3rem; }
.brief-item .why { background: var(--surface-2); border-radius: 6px; padding: .8rem 1rem; margin: .8rem 0; font-size: .95rem; }
.brief-item .why strong { color: var(--brand); }
.brief-item .src { font-size: .85rem; }
.toc { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.5rem 0 .5rem; }
.toc a { text-decoration: none; }

/* About */
.about-grid { display: grid; gap: 2rem; grid-template-columns: 1fr; }
@media (min-width: 52rem) { .about-grid { grid-template-columns: 1.5fr 1fr; } }
.about-grid h2 { font-size: 1.4rem; margin: 0 0 .8rem; }
.list-plain { list-style: none; padding: 0; margin: 0; }
.list-plain li { padding: .55rem 0; border-bottom: 1px solid var(--line); }

/* ---------- Search dialog ---------- */
dialog.search {
  width: min(40rem, calc(100% - 2rem)); margin: 5rem auto auto; padding: 0;
  border: 1px solid var(--line); border-radius: 12px; background: var(--surface); color: var(--ink); box-shadow: var(--shadow-lg);
}
dialog.search::backdrop { background: rgba(0,0,0,.4); backdrop-filter: blur(2px); }
.search-box { display: flex; align-items: center; gap: .6rem; padding: .8rem 1rem; border-bottom: 1px solid var(--line); }
.search-box svg { width: 1.2rem; height: 1.2rem; color: var(--muted); flex: none; }
.search-box input { flex: 1; font: inherit; font-size: 1.05rem; border: 0; background: transparent; color: var(--ink); outline: none; }
.search-results { list-style: none; margin: 0; padding: .4rem; max-height: 60vh; overflow-y: auto; }
.search-results a { display: block; padding: .65rem .8rem; border-radius: 6px; text-decoration: none; color: var(--ink); }
.search-results a:hover, .search-results a:focus { background: var(--surface-2); outline: none; }
.search-results b { display: block; font-weight: 600; }
.search-results span { font-size: .85rem; color: var(--muted); }
.search-empty { padding: 1rem; color: var(--muted); font-size: .92rem; }
kbd { font-family: var(--mono); font-size: .75rem; border: 1px solid var(--line); border-radius: 4px; padding: .05rem .35rem; color: var(--muted); }

/* ---------- Footer ---------- */
.site-footer { background: var(--bg-alt); border-top: 1px solid var(--line); font-size: .9rem; margin-top: 0; }
.footer-cols { display: grid; gap: 2rem; grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr)); padding: 2.5rem 0 1.5rem; }
.footer-cols h3 { font-size: .95rem; margin: 0 0 .7rem; }
.footer-cols ul { list-style: none; margin: 0; padding: 0; }
.footer-cols li { margin: .35rem 0; }
.footer-cols a { color: var(--muted); text-decoration: none; }
.footer-cols a:hover { color: var(--ink); text-decoration: underline; }
.footer-base { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; padding: 1.2rem 0 2rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .82rem; }

/* =========================================================
   Home: dark "deep space" hero, floating objects, live console
   ========================================================= */
.home .site-header { background: rgba(5, 5, 28, .92); border-bottom-color: rgba(255,255,255,.08); }
.home .site-header .brand, .home .site-header .site-nav a, .home .site-header .icon-btn { color: #fff; }
.home .site-header .brand .role { color: rgba(255,255,255,.6); }
.home .site-header .brand .sep { background: rgba(255,255,255,.2); }
.home .site-header .site-nav a:hover, .home .site-header .icon-btn:hover { background: rgba(255,255,255,.1); }
.home .site-header .site-nav a[aria-current="page"] { color: #fff; box-shadow: inset 0 -2px 0 #A78BFA; }
@media (max-width: 62rem) {
  .home .site-nav { background: #0d0b2e; border-bottom-color: rgba(255,255,255,.1); }
  .home .site-nav a { border-bottom-color: rgba(255,255,255,.08); }
}

.space { margin-top: -1px;
  position: relative; overflow: hidden; color: #fff; text-align: center;
  background:
    radial-gradient(55% 45% at 50% 100%, rgba(139, 92, 246, .75), transparent 70%),
    radial-gradient(30% 22% at 50% 92%, rgba(216, 180, 254, .55), transparent 70%),
    linear-gradient(180deg, #05051c 0%, #0b0a35 55%, #1b1266 100%);
  padding-top: clamp(3.5rem, 9vw, 6.5rem);
}
.space .stars { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.space .wrap { position: relative; }
.space .kicker {
  display: inline-flex; align-items: center; gap: .5rem; font-size: .85rem; font-weight: 600;
  padding: .3rem .8rem .3rem .4rem; border-radius: 999px; margin-bottom: 1.4rem;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14); color: rgba(255,255,255,.9); text-decoration: none;
}
.space .kicker:hover { color: #fff; background: rgba(255,255,255,.14); }
.space .kicker .live { display: inline-flex; align-items: center; gap: .35rem; padding: .1rem .5rem; border-radius: 999px; background: #22C55E; color: #052e16; font-size: .72rem; }
.space .kicker .live::before { content: ""; width: .45rem; height: .45rem; border-radius: 50%; background: #052e16; animation: pulse 1.6s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .25; } }
.space h1 {
  font-family: var(--font-display); font-weight: 700; color: #fff;
  font-size: clamp(2.6rem, 7.4vw, 5.4rem); line-height: 1.02; letter-spacing: -0.045em;
  margin: 0 auto 1.2rem; max-width: 13ch; text-wrap: balance;
}
.space h1 em { font-style: normal; background: linear-gradient(90deg, #C4B5FD, #F0ABFC 50%, #67E8F9); -webkit-background-clip: text; background-clip: text; color: transparent; }
.space .intro { font-size: clamp(1.05rem, 2.2vw, 1.25rem); color: rgba(255,255,255,.8); max-width: 36rem; margin: 0 auto 2rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; justify-content: center; }
.ask {
  display: flex; align-items: center; width: min(100%, 30rem); background: #fff; border-radius: 8px; padding: 4px;
  box-shadow: 0 0 0 1px rgba(255,255,255,.3), 0 10px 40px rgba(124,58,237,.35);
}
.ask input { flex: 1; min-width: 0; border: 0; outline: none; font: inherit; font-size: 1rem; padding: .7rem .8rem; color: #111; background: transparent; }
.ask button {
  border: 0; cursor: pointer; font: inherit; font-weight: 600; color: #fff; padding: .7rem 1.1rem; border-radius: 6px; white-space: nowrap;
  background: linear-gradient(135deg, #7C3AED, #4F46E5);
}
.ask button:hover { filter: brightness(1.1); }
.btn-ghost {
  display: inline-flex; align-items: center; padding: .75rem 1.3rem; border-radius: 8px; font-weight: 600; text-decoration: none;
  color: #fff; border: 1px solid rgba(255,255,255,.55);
}
.btn-ghost:hover { color: #fff; background: rgba(255,255,255,.08); }
@media (max-width: 34rem) { .ask button .long { display: none; } }

/* Floating objects */
.floaters { position: relative; height: clamp(12rem, 26vw, 19rem); max-width: 56rem; margin: 1rem auto 0; pointer-events: none; }
.floater { position: absolute; filter: drop-shadow(0 18px 30px rgba(76, 29, 149, .55)); will-change: transform; }
.floater svg { width: 100%; height: auto; display: block; animation: bob 6s ease-in-out infinite; }
.floater.f1 { width: clamp(4.5rem, 10vw, 7.5rem); left: 16%; top: 30%; }
.floater.f2 { width: clamp(4rem, 9vw, 6.5rem); left: 46%; top: 62%; }
.floater.f2 svg { animation-delay: -2s; animation-duration: 7s; }
.floater.f3 { width: clamp(4.5rem, 10vw, 7rem); left: 70%; top: 8%; }
.floater.f3 svg { animation-delay: -4s; animation-duration: 6.5s; }
.floater.f4 { width: clamp(3rem, 6vw, 4.5rem); left: 4%; top: 2%; opacity: .85; }
.floater.f4 svg { animation-delay: -1s; animation-duration: 8s; }
.floater.f5 { width: clamp(3rem, 6vw, 4.8rem); left: 88%; top: 58%; opacity: .9; }
.floater.f5 svg { animation-delay: -3s; animation-duration: 7.5s; }
@keyframes bob { 0%, 100% { transform: translateY(0) rotate(-4deg); } 50% { transform: translateY(-14px) rotate(4deg); } }
.steam path { animation: steam 3s ease-in-out infinite; opacity: 0; }
.steam path:nth-child(2) { animation-delay: 1s; } .steam path:nth-child(3) { animation-delay: 2s; }
@keyframes steam { 0% { opacity: 0; transform: translateY(6px); } 40% { opacity: .9; } 100% { opacity: 0; transform: translateY(-10px); } }

/* Console window */
.console {
  position: relative; max-width: 68rem; margin: 0 auto; text-align: left;
  border-radius: 14px 14px 0 0; border: 1px solid rgba(255,255,255,.22); border-bottom: 0;
  background: #0d1117; color: #E6EDF3;
  box-shadow: 0 0 0 6px rgba(167,139,250,.12), 0 -10px 90px rgba(139,92,246,.55);
}
.console-bar { display: flex; align-items: center; gap: .9rem; padding: .6rem 1rem; border-bottom: 1px solid #21262d; background: #161b22; border-radius: 14px 14px 0 0; }
.dots { display: flex; gap: .4rem; }
.dots i { width: .7rem; height: .7rem; border-radius: 50%; background: #484f58; }
.dots i:nth-child(1) { background: #ff5f57; } .dots i:nth-child(2) { background: #febc2e; } .dots i:nth-child(3) { background: #28c840; }
.tabs { display: flex; gap: .2rem; font-family: var(--mono); font-size: .78rem; overflow: hidden; }
.tabs span { padding: .25rem .7rem; border-radius: 6px; color: #8b949e; white-space: nowrap; }
.tabs span.on { background: #0d1117; color: #E6EDF3; border: 1px solid #30363d; }
.console-body { display: grid; grid-template-columns: 1fr; min-height: 22rem; }
@media (min-width: 52rem) { .console-body { grid-template-columns: 19rem 1fr; } }
.console-side { padding: 1.2rem; border-right: 1px solid #21262d; font-size: .88rem; }
@media (max-width: 52rem) { .console-side { border-right: 0; border-bottom: 1px solid #21262d; } }
.console-side .label { font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: #8b949e; margin: 0 0 .6rem; }
.console-side .when { display: flex; justify-content: space-between; color: #8b949e; font-size: .8rem; margin-bottom: .8rem; }
.console-side .mini-weather { display: flex; align-items: center; gap: .7rem; padding: .7rem; border-radius: 8px; background: #161b22; border: 1px solid #21262d; margin-bottom: 1rem; }
.console-side .mini-weather .wx-icon { width: 2.2rem; height: 2.2rem; color: #79c0ff; }
.console-side .mini-weather .temp { font-size: 1.35rem; font-weight: 600; line-height: 1; color: #fff; }
.console-side .mini-weather .desc { color: #8b949e; font-size: .8rem; }
.console-side ul { list-style: none; margin: 0; padding: 0; }
.console-side li { padding: .55rem 0; border-top: 1px solid #21262d; }
.console-side li a { color: #E6EDF3; text-decoration: none; display: block; font-weight: 600; line-height: 1.35; margin-top: .2rem; }
.console-side li a:hover { color: #79c0ff; }
.term { font-family: var(--mono); font-size: .86rem; line-height: 1.6; padding: 1rem 1.2rem; display: flex; flex-direction: column; min-height: 20rem; max-height: 26rem; cursor: text; }
.term-out { overflow-y: auto; flex: 1; white-space: pre-wrap; word-break: break-word; }
.term-out .c { color: #8b949e; } .term-out .g { color: #7ee787; } .term-out .b { color: #79c0ff; } .term-out .p { color: #d2a8ff; } .term-out .y { color: #e3b341; } .term-out .r { color: #ff7b72; }
.term-out a { color: #79c0ff; }
.term-line { display: flex; gap: .5rem; align-items: center; }
.term-line label { color: #7ee787; white-space: nowrap; }
.term-line input { flex: 1; min-width: 0; background: transparent; border: 0; outline: none; color: #E6EDF3; font: inherit; caret-color: #d2a8ff; }
.term-hint { color: #6e7681; font-size: .75rem; margin-top: .4rem; }

/* "Can you fix it?" incident game */
.game { max-width: 52rem; }
.ticket { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); overflow: hidden; }
.ticket-head { display: flex; flex-wrap: wrap; gap: .5rem 1.2rem; align-items: center; padding: .8rem 1.2rem; background: var(--surface-2); border-bottom: 1px solid var(--line); font-size: .85rem; color: var(--muted); }
.ticket-head b { color: var(--ink); font-family: var(--mono); }
.prio { font-weight: 700; font-size: .75rem; padding: .1rem .5rem; border-radius: 4px; color: var(--c-sec); background: var(--c-sec-bg); }
.ticket-body { padding: 1.3rem 1.2rem 1.4rem; }
.ticket-body h3 { font-size: 1.2rem; margin: 0 0 .5rem; }
.ticket-body .quote { border-left: 3px solid var(--line); padding-left: .9rem; color: var(--muted); margin: 0 0 1.2rem; font-style: italic; }
.ticket-body .q { font-weight: 600; margin: 1rem 0 .7rem; }
.options { display: grid; gap: .55rem; }
.opt {
  text-align: left; font: inherit; font-size: .95rem; cursor: pointer; padding: .75rem 1rem; border-radius: 8px;
  background: var(--bg); color: var(--ink); border: 1px solid var(--line); transition: border-color .15s, background .15s;
}
.opt:hover:not(:disabled) { border-color: var(--brand); background: var(--brand-soft); }
.opt:disabled { cursor: default; }
.opt.right { border-color: #1a7f37; background: color-mix(in srgb, #2da44e 14%, var(--bg)); }
.opt.wrong { border-color: var(--c-sec); background: var(--c-sec-bg); }
.feedback { margin-top: 1rem; padding: .9rem 1rem; border-radius: 8px; background: var(--surface-2); }
.feedback strong { display: block; margin-bottom: .2rem; }
.game-foot { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; margin-top: 1.2rem; }
.score { font-family: var(--mono); font-size: .9rem; color: var(--muted); }

@media (prefers-reduced-motion: reduce) {
  .floater svg, .steam path, .space .kicker .live::before { animation: none; }
  .steam path { opacity: .7; }
}