:root {
  --bg: #0f131f;
  --panel: #171e2f;
  --text: #eef1fb; 
  --muted: #c6cde0;
  --faint: #9ea9c3;
  --white-rgb: 255, 255, 255;
  --black-rgb: 0, 0, 0;
  /* blue accent (unchanged) */
  --accent-rgb: 170, 195, 255;
  --mint-rgb: 190, 215, 255;
  --link: #b9caff;
  --link-hover: #e7edff;
  --link-hover-rgb: 231, 237, 255;
  --border: rgba(var(--white-rgb), .10);
  --code-bg: rgba(var(--white-rgb), .06);   /* zurück minimal dunkler */
  --shadow: 0 10px 30px rgba(var(--black-rgb), .36);
  --radius: 14px;
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --maxw: 1100px;
  --pad: clamp(16px, 3vw, 28px);
  --lh: 1.55;
  --acc-bg: rgba(var(--white-rgb), .032);
  --acc-bg-open: rgba(var(--white-rgb), .055);
  --acc-border: rgba(var(--white-rgb), .13);
  --acc-border-open: rgba(var(--accent-rgb), .42);
  --acc-glow: 0 0 0 4px rgba(var(--accent-rgb), .12);
  --acc-radius: 14px;
  --cta-1: #3b6cff;
  --cta-2: #2f56d8;
  --cta-1-hover: #4b7cff;
  --cta-2-hover: #3a66f0;
  --code-text: #eef2ff;
  --h3-border: rgba(var(--white-rgb), 1);
}
*,
*::before,
*::after {
  box-sizing: border-box;
  cursor: default;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  font-family: var(--font);
  line-height: var(--lh);
  color: var(--text);
  background:
    radial-gradient(1200px 800px at 20% -10%, rgba(var(--accent-rgb), .12), transparent 60%),
    radial-gradient(900px 700px at 90% 10%, rgba(var(--mint-rgb), .08), transparent 55%),
    var(--bg);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
a {
  cursor: pointer;
  color: var(--link);
  text-decoration: none;
  border-bottom: 1px solid rgba(var(--accent-rgb), .35);
}
a:hover {
  cursor: pointer;
  color: var(--link-hover);
  border-bottom-color: rgba(var(--link-hover-rgb), .7);
}
.pms-header {
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(900px 300px at 50% -40%, rgba(var(--accent-rgb), .10), transparent 60%),
    linear-gradient(180deg, rgba(var(--white-rgb), .03), rgba(var(--white-rgb), .01));
}
.pms-header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 26px var(--pad) 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
  text-align: center;
  width: 100%;
}
/* Operator strip */
.operators {
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: 0.35em;
  color: var(--muted);
  opacity: 0.95;
  transform: translateZ(0);
}
.operators span {
  display: inline-block;
  transform-origin: 50% 60%;
  will-change: transform, opacity;
  opacity: 0.65;
  filter: saturate(0.9);
  animation: op-wave 2.2s ease-in-out infinite;
}
.operators {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.65em;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  letter-spacing: 0.6em;
  margin: 0px 0 20px;
  color: var(--muted);
}
.operators span {
  display: inline-block;
  transform-origin: center center;
  transform: scale(1);
  will-change: transform, opacity;
  opacity: 0.55;
  animation: op-pulse 8s cubic-bezier(.45, 0, .25, 1) infinite;
}
.operators span:nth-child(1) { animation-delay: 0s; }
.operators span:nth-child(2) { animation-delay: 0.7s; }
.operators span:nth-child(3) { animation-delay: 1.4s; }
.operators span:nth-child(4) { animation-delay: 2.1s; }
.operators span:nth-child(5) { animation-delay: 2.8s; }
.operators span:nth-child(6) { animation-delay: 3.5s; }
.operators span:nth-child(7) { animation-delay: 4.2s; }
.operators span:nth-child(8) { animation-delay: 4.9s; }
.operators span:nth-child(9) { animation-delay: 5.6s; }
.operators span:nth-child(10) { animation-delay: 6.3s; }
.operators span:nth-child(11) { animation-delay: 7.0s; }
@keyframes op-pulse {
  0%   { opacity: 0.55; }
  20%  { opacity: 1; }
  40%  { opacity: 1; }
  60%  { opacity: 0.55; }
  100% { opacity: 0.55; }
}
@media (prefers-reduced-motion: reduce) {
  .operators span {
    animation: none;
    opacity: 0.8;
  }
}
.operators .bigger {
  font-size: 1.5em;
  margin-top: -10px;
}
.pms-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.pms-logo {
  width: 140px;
  height: auto;
  opacity: 0.95;
  filter: drop-shadow(0 10px 25px rgba(var(--black-rgb), .45));
}
.pms-title {
  display: grid;
  gap: 6px;
}
.pms-name {
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 800;
  letter-spacing: 0.35em;
  padding-left: 0;
  text-indent: 0.35em;
  transform: translateX(-0.175em);
}
.pms-subtitle {
  font-size: 1.35em;
  color: var(--muted);
  letter-spacing: 0.08em;
}
.pms-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 6px 14px;
  width: 100%;
}
.pms-nav a {
  font-size: 13px;
  padding: 8px 10px;
  border-radius: 10px;
  color: var(--muted);
  border: 1px solid transparent;
  background: rgba(var(--white-rgb), .02);
  border-bottom-color: transparent;
  line-height: 1.2;
}
.pms-nav a:hover {
  color: var(--text);
  border-color: rgba(var(--white-rgb), .14);
  background: rgba(var(--white-rgb), .05);
}
.pms-nav a[aria-current="page"] {
  color: var(--text);
  border-color: rgba(var(--accent-rgb), .35);
  background: rgba(var(--accent-rgb), .08);
}
.book-box{
  margin: 0px 0 25px;
  padding: 0;
}
.book-inner{
  display: grid;
  grid-template-columns: 265px 1fr;
  gap: 26px;
  align-items: center;
  padding: 22px 26px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background:
    radial-gradient(600px 200px at 0% 0%, rgba(var(--accent-rgb), .08), transparent 60%),
    linear-gradient(180deg, rgba(var(--white-rgb), .04), rgba(var(--white-rgb), .02));
  box-shadow: var(--shadow);
}
.book-cover img{
  width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 12px 30px rgba(var(--black-rgb), .35);
}
.book-meta h3{
  margin: 0 0 4px;
  font-size: 22px;
  letter-spacing: .08em;
}
.book-subtitle{
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: .04em;
}
.book-text{
  font-size: 14px;
  color: var(--text);
  margin: 10px 0;
  line-height: 1.55;
}
.book-text.subtle{
  color: var(--faint);
  font-size: 13px;
}
.book-actions{
  margin-top: 16px;
}
.amazon-button{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--cta-1), var(--cta-2));
  border: 1px solid rgba(var(--white-rgb), .15);
  color: rgba(var(--white-rgb), 1);
  font-size: 13px;
  letter-spacing: .04em;
  font-weight: 500;
  text-decoration: none;
  box-shadow:
    0 6px 18px rgba(47,86,216,.35),
    inset 0 1px 0 rgba(var(--white-rgb), .25);
  transition:
    transform .2s ease,
    box-shadow .2s ease,
    background .2s ease;
}
.amazon-button:hover{
  background: linear-gradient(180deg, var(--cta-1-hover), var(--cta-2-hover));
  transform: translateY(-1px);
  box-shadow:
    0 10px 26px rgba(47,86,216,.45),
    inset 0 1px 0 rgba(var(--white-rgb), .3);
}
@media (max-width: 720px){
  .book-inner{
    grid-template-columns: 1fr;
    text-align: center;
  }
  .book-cover{
    max-width: 220px;
    margin: 0 auto;
  }
}
.page {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 25px 25px 0 25px;
  display: block;
}
main {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(var(--white-rgb), .04), rgba(var(--white-rgb), .02));
  box-shadow: var(--shadow);
  padding: calc(var(--pad) * 1.05);
  min-width: 0;
  width: 100%;
}
.brand {
  display: grid;
  gap: 6px;
  padding: 4px 2px 10px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 10px;
}
.brand .site {
  font-weight: 780;
  letter-spacing: .2px;
  font-size: 14px;
  color: var(--text);
}
.brand .tag {
  font-size: 12px;
  color: var(--faint);
}
.side-meta {
  border-top: 1px solid var(--border);
  margin-top: 10px;
  padding-top: 10px;
  font-size: 12px;
  color: var(--faint);
  display: grid;
  gap: 8px;
}
.pill {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(var(--white-rgb), .10);
  background: rgba(var(--white-rgb), .03);
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
  width: fit-content;
}
.pill code { white-space: nowrap; }
h1 {
  font-variant: small-caps;
  margin-bottom: 0px
}
h1,
h2,
h3 {
  line-height: 1.15;
  margin: 0 0 12px;
  letter-spacing: .2px;
}
h2 {
  font-size: clamp(22px, 2.6vw, 30px);
  margin-top: 0;
  text-align: center;
  font-variant: small-caps;
}
h3 {
  font-size: clamp(16px, 2vw, 20px);
  margin-top: 22px;
  border-bottom: 1px solid var(--h3-border);
}
p {
  margin: 10px 0;
  color: var(--text);
}
em { color: var(--muted); }
.lead {
  color: var(--muted);
  margin-top: 6px;
}
ul {
  margin: 10px 0 14px;
  padding-left: 18px;
}
li {
  margin: 8px 0;
  color: var(--text);
}
li p { margin: 6px 0; }
hr {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(var(--white-rgb), .16), transparent);
  margin: 18px 0;
}
code {
  font-family: var(--mono);
  font-size: 0.95em;
  padding: 0.15em 0.35em;
  border-radius: 8px;
  background: var(--code-bg);
  border: 1px solid rgba(var(--white-rgb), .08);
  color: var(--code-text);
  white-space: nowrap;
}
pre {
  background: rgba(var(--white-rgb), .05);
  border: 1px solid rgba(var(--white-rgb), .10);
  border-radius: 12px;
  padding: 14px 16px;
  overflow: auto;
  margin: 14px 0;
}
pre code {
  padding: 0;
  border: 0;
  background: transparent;
  white-space: pre;
  display: block;
  color: var(--text);
}
/* ============================
   Accordeons
   ============================ */
.accordeons {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}
.accordeons details {
  cursor: pointer;
  border: 1px solid var(--acc-border);
  border-radius: var(--acc-radius);
  background: var(--acc-bg);
  box-shadow: 0 8px 22px rgba(var(--black-rgb), .22);
  overflow: clip;
  transition: border-color .18s ease, background .18s ease, box-shadow .18s ease, transform .18s ease;
}
.accordeons details:hover {
  border-color: rgba(var(--white-rgb), .18);
  transform: translateY(-1px);
}
.accordeons details[open] {
  background: var(--acc-bg-open);
  border-color: var(--acc-border-open);
  box-shadow: 0 10px 28px rgba(var(--black-rgb), .28), var(--acc-glow);
}
.accordeons summary {
  list-style: none;
  cursor: pointer;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  user-select: none;
  outline: none;
}
.accordeons summary::-webkit-details-marker { display: none; }
.accordeons summary::before {
  content: "";
  width: 10px;
  height: 10px;
  flex: 0 0 10px;
  border-right: 2px solid rgba(var(--white-rgb), .55);
  border-bottom: 2px solid rgba(var(--white-rgb), .55);
  transform: rotate(-45deg);
  transition: transform .18s ease, border-color .18s ease;
  opacity: .9;
}
.accordeons details[open]>summary::before {
  transform: rotate(45deg);
  border-color: rgba(var(--accent-rgb), .85);
}
.accordeons summary strong {
  color: var(--text);
  letter-spacing: .15px;
}
.accordeons summary { color: var(--muted); }
.accordeons details:hover summary { color: var(--text); }
.accordeons summary:focus-visible {
  box-shadow: 0 0 0 4px rgba(var(--accent-rgb), .18);
  border-radius: calc(var(--acc-radius) - 2px);
}
.accordeons details> :not(summary) {
  padding: 0 14px 12px 34px;
  color: var(--text);
}
.accordeons details p {
  margin: 8px 0;
  color: var(--text);
}
.accordeons details p strong { color: var(--muted); }
.accordeons details[open]>summary {
  border-bottom: 1px solid rgba(var(--white-rgb), .08);
  background:
    radial-gradient(700px 140px at 50% -40%, rgba(var(--accent-rgb), .12), transparent 60%);
}
/* ============================
   Stack diagram (boxes + arrows)
   ============================ */
.stack-diagram {
  margin: 14px 0 18px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(var(--white-rgb), .02);
  box-shadow: 0 10px 26px rgba(var(--black-rgb), .18);
}
.stack-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  align-items: center;
  margin: 10px 0;
}
.stack-row:nth-child(2) {
  grid-template-columns: 1fr auto 1fr auto 1fr;
}
.stack-box {
  border: 1px solid rgba(var(--white-rgb), .12);
  border-radius: 14px;
  background:
    radial-gradient(700px 220px at 20% -30%, rgba(var(--accent-rgb), .10), transparent 60%),
    linear-gradient(180deg, rgba(var(--white-rgb), .04), rgba(var(--white-rgb), .02));
  padding: 12px 12px 11px;
  min-height: 78px;
}
.stack-box .kicker {
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 6px;
}
.stack-box .title {
  font-weight: 800;
  letter-spacing: .2px;
  margin-bottom: 4px;
}
.stack-box .desc {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.35;
}
.arrow {
  width: 44px;
  height: 2px;
  background: rgba(var(--accent-rgb), .35);
  position: relative;
  border-radius: 999px;
  opacity: .95;
}
.arrow::after {
  content: "";
  position: absolute;
  right: -2px;
  top: 50%;
  width: 10px;
  height: 10px;
  transform: translateY(-50%) rotate(45deg);
  border-right: 2px solid rgba(var(--accent-rgb), .75);
  border-top: 2px solid rgba(var(--accent-rgb), .75);
}
.stack-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 12px;
}
@media (max-width: 900px) {
  .stack-row,
  .stack-row:nth-child(2) {
    grid-template-columns: 1fr;
  }
  .arrow {
    width: 2px;
    height: 18px;
    margin: 0 auto;
  }
  .arrow::after {
    right: 50%;
    top: auto;
    bottom: -2px;
    transform: translateX(50%) rotate(135deg);
  }
}
@media (prefers-reduced-motion: reduce) {
  details,
  summary::before {
    transition: none !important;
  }
}
/* ============================
   Operator table
   ============================ */
.table-wrap {
  margin-top: 20px;
}
.table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: rgba(var(--white-rgb), .02);
  box-shadow: 0 10px 26px rgba(var(--black-rgb), .22);
}
.table thead th {
  text-align: left;
  font-size: 12px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 12px 14px;
  border-bottom: 1px solid rgba(var(--white-rgb), .10);
  background: linear-gradient(180deg, rgba(var(--white-rgb), .04), rgba(var(--white-rgb), .02));
}
.table tbody td {
  padding: 12px 14px;
  vertical-align: top;
  border-bottom: 1px solid rgba(var(--white-rgb), .08);
  color: var(--text);
}
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr:nth-child(2n) {
  background: rgba(var(--white-rgb), .015);
}
.table tbody tr:hover {
  background: rgba(var(--accent-rgb), .06);
}
.table .op {
  white-space: nowrap;
  width: 28%;
}
.table .glyph {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 10px;
  margin-right: 10px;
  font-weight: 800;
  color: var(--code-text);
  border: 1px solid rgba(var(--accent-rgb), .22);
  background: radial-gradient(120px 60px at 30% 20%, rgba(var(--accent-rgb), .18), rgba(var(--white-rgb), .03));
}
.table .name {
  font-weight: 700;
  color: var(--text);
  letter-spacing: .1px;
}
.note {
  margin: 10px 2px 0;
  color: var(--muted);
  font-size: 13px;
}
@media (max-width: 760px) {
  .table thead { display: none; }
  .table,
  .table tbody,
  .table tr,
  .table td {
    display: block;
    width: 100%;
  }
  .table tr {
    border-bottom: 1px solid rgba(var(--white-rgb), .10);
  }
  .table tbody td {
    border: 0;
    padding: 10px 14px;
  }
  .table tbody td+td { padding-top: 0; }
  .table .op { width: 100%; }
  .table tbody tr:last-child { border-bottom: 0; }
}
/* ============================
   Footer
   ============================ */
footer {
  font-size: 0.9em;
  text-align: center;
  border-top: 1px solid var(--border);
  margin: 25px auto 0 auto;
  padding: 15px;
  border-top-left-radius: 15px;
  border-top-right-radius: 15px;
  width: 100%;
  background:
    radial-gradient(900px 300px at 50% 140%, rgba(var(--accent-rgb), .10), transparent 60%),
    linear-gradient(180deg, rgba(var(--white-rgb), .01), rgba(var(--white-rgb), .03));
}
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 16px var(--pad) 26px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
  text-align: center;
  color: var(--faint);
  font-size: 12px;
  line-height: 1.45;
  letter-spacing: 0.02em;
}
.footer-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 10px;
  color: var(--muted);
}
.footer-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(var(--white-rgb), .10);
  background: rgba(var(--white-rgb), .02);
  box-shadow: 0 6px 18px rgba(var(--black-rgb), .18);
  color: var(--muted);
  white-space: nowrap;
}
footer a {
  color: var(--link);
  border-bottom: 1px solid rgba(var(--accent-rgb), .25);
}
footer a:hover {
  color: var(--link-hover);
  border-bottom-color: rgba(var(--link-hover-rgb), .55);
}
@media (max-width: 980px) {
  code { white-space: normal; }
  .pms-logo { width: 110px; }
  .pms-nav { gap: 6px; }
}
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}