:root {
  color-scheme: light;
  --bg: #f3f6fa;
  --surface: #ffffff;
  --surface-soft: #f7faff;
  --surface-blue: #eef6ff;
  --text: #182231;
  --text-2: #465568;
  --muted: #7a8798;
  --line: #e1e8f0;
  --line-strong: #ccd9e8;
  --blue: #3e91ef;
  --blue-strong: #1779e5;
  --blue-soft: #e8f3ff;
  --green: #289c62;
  --green-soft: #eaf8f0;
  --amber: #c98218;
  --amber-soft: #fff6e7;
  --red: #d75568;
  --red-soft: #fff0f2;
  --purple: #7657dc;
  --shadow-sm: 0 8px 24px rgba(39, 67, 101, 0.07);
  --shadow-md: 0 18px 48px rgba(39, 67, 101, 0.11);
  --radius: 16px;
  --radius-sm: 11px;
  --left: 272px;
  --right: 232px;
  --header-mobile: 62px;
  font-family: "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 54% -10%, rgba(75, 151, 239, 0.13), transparent 30%),
    linear-gradient(135deg, #f7f9fc 0%, var(--bg) 58%, #f4f8fd 100%);
  color: var(--text);
  font-size: 15px;
  line-height: 1.72;
  text-rendering: optimizeLegibility;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: var(--blue-strong);
  text-decoration: none;
}

a:hover {
  text-decoration: none;
}

img {
  max-width: 100%;
}

svg {
  display: block;
}

::selection {
  background: rgba(62, 145, 239, 0.2);
}

.app-shell {
  display: grid;
  grid-template-columns: var(--left) minmax(0, 1fr) var(--right);
  min-height: 100vh;
}

.left-rail,
.right-rail {
  position: sticky;
  top: 0;
  z-index: 40;
  height: 100vh;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: #c7d6e6 transparent;
}

.left-rail {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  min-height: 72px;
  padding: 15px 20px;
  border-bottom: 1px solid var(--line);
}

.brand img {
  width: 188px;
  height: auto;
}

.search-box {
  position: relative;
  margin: 16px 14px 9px;
}

.search-box svg {
  position: absolute;
  top: 50%;
  left: 12px;
  width: 17px;
  height: 17px;
  color: var(--muted);
  transform: translateY(-50%);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  height: 40px;
  padding: 0 34px 0 38px;
  border: 1px solid var(--line);
  border-radius: 11px;
  outline: none;
  background: var(--surface-soft);
  color: var(--text);
  font-size: 13px;
  transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
}

.search-box input:focus {
  border-color: rgba(62, 145, 239, .52);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(62, 145, 239, .1);
}

.search-box kbd {
  position: absolute;
  top: 50%;
  right: 9px;
  padding: 1px 5px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: #fff;
  color: var(--muted);
  font-size: 10px;
  transform: translateY(-50%);
}

.nav-scroll {
  flex: 1;
  padding: 4px 12px 18px;
}

.nav-group {
  margin-top: 13px;
}

.nav-group-title {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 8px 6px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.nav-group-title b {
  display: grid;
  place-items: center;
  width: 21px;
  height: 21px;
  border-radius: 7px;
  background: var(--blue-soft);
  color: var(--blue-strong);
  font-size: 10px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 38px;
  margin: 2px 0;
  padding: 7px 10px;
  border-radius: 10px;
  color: #465365;
  font-size: 13px;
  font-weight: 600;
  transition: color .16s ease, background .16s ease, transform .16s ease;
}

.nav-link svg {
  flex: 0 0 17px;
  width: 17px;
  height: 17px;
  color: #8491a1;
}

.nav-link:hover {
  background: #f3f7fb;
  color: var(--blue-strong);
}

.nav-link.active {
  background: var(--blue-soft);
  color: var(--blue-strong);
  box-shadow: inset 3px 0 0 var(--blue);
}

.nav-link.active svg {
  color: var(--blue);
}

.rail-foot {
  padding: 12px 18px 15px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
}

.rail-foot strong {
  display: block;
  color: var(--text-2);
  font-size: 12px;
}

.page-main {
  min-width: 0;
  padding: 30px clamp(24px, 4vw, 58px) 92px;
}

.content-wrap {
  width: min(100%, 1040px);
  margin: 0 auto;
}

.right-rail {
  padding: 30px 18px 28px 0;
}

.toc-card {
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, .78);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(14px);
}

.toc-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 11px;
  color: var(--text);
  font-size: 12px;
  font-weight: 800;
}

.toc-title span {
  color: var(--blue-strong);
  font-size: 10px;
}

.reading-progress {
  height: 4px;
  margin-bottom: 13px;
  overflow: hidden;
  border-radius: 999px;
  background: #eaf0f6;
}

.reading-progress i {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #54b6ec, #477ef1);
  transition: width .15s ease;
}

.toc-list {
  display: grid;
  gap: 2px;
}

.toc-list a {
  display: block;
  padding: 6px 8px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.45;
}

.toc-list a:hover,
.toc-list a.active {
  background: var(--blue-soft);
  color: var(--blue-strong);
}

.toc-list a[data-level="3"] {
  padding-left: 18px;
}

.mobile-bar {
  display: none;
}

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin-bottom: 22px;
  padding: clamp(30px, 5vw, 58px);
  border: 1px solid rgba(117, 171, 232, .3);
  border-radius: 24px;
  background:
    linear-gradient(128deg, rgba(230, 243, 255, .96), rgba(255, 255, 255, .97) 48%, rgba(240, 239, 255, .86));
  box-shadow: var(--shadow-md);
}

.hero::before,
.hero::after {
  position: absolute;
  z-index: -1;
  content: "";
  border-radius: 999px;
  filter: blur(3px);
}

.hero::before {
  top: -90px;
  right: -80px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(98, 133, 240, .19), transparent 68%);
}

.hero::after {
  bottom: -140px;
  left: 24%;
  width: 360px;
  height: 260px;
  background: radial-gradient(circle, rgba(54, 194, 221, .13), transparent 68%);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 15px;
  color: var(--blue-strong);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.eyebrow svg {
  width: 17px;
  height: 17px;
}

.hero h1 {
  max-width: 780px;
  margin: 0;
  color: #152033;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.08;
  letter-spacing: -.035em;
}

.hero .lead {
  max-width: 790px;
  margin: 17px 0 0;
  color: #516176;
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.72;
}

.hero-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 23px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 30px;
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .72);
  color: var(--text-2);
  font-size: 11px;
  font-weight: 700;
}

.chip.blue {
  border-color: #c9e1fb;
  background: var(--blue-soft);
  color: var(--blue-strong);
}

.quick-path {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 0 0 40px;
}

.quick-path a {
  position: relative;
  min-width: 0;
  padding: 17px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .84);
  box-shadow: var(--shadow-sm);
  color: var(--text);
  transition: border-color .18s ease, transform .18s ease, box-shadow .18s ease;
}

.quick-path a:hover {
  border-color: #bdd9f7;
  box-shadow: 0 12px 30px rgba(39, 99, 163, .12);
  transform: translateY(-2px);
}

.quick-path b {
  display: block;
  color: var(--blue-strong);
  font-size: 11px;
}

.quick-path strong {
  display: block;
  margin-top: 5px;
  font-size: 15px;
}

.quick-path small {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}

.doc-section {
  margin: 0 0 54px;
}

.section-heading {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  margin-bottom: 18px;
  padding-top: 8px;
}

.section-number {
  display: grid;
  place-items: center;
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  border: 1px solid #cbe1fa;
  border-radius: 13px;
  background: var(--blue-soft);
  color: var(--blue-strong);
  font-size: 13px;
  font-weight: 900;
}

.section-heading h2 {
  margin: 0;
  color: var(--text);
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.2;
  letter-spacing: -.02em;
}

.section-heading p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.subsection {
  margin-top: 30px;
}

.subsection h3,
.feature-body h3 {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 12px;
  color: var(--text);
  font-size: 20px;
  line-height: 1.35;
  letter-spacing: -.01em;
}

.subsection h3::before,
.feature-body > h3::before {
  width: 4px;
  height: 20px;
  border-radius: 99px;
  background: var(--blue);
  content: "";
}

.subsection > p,
.feature-body > p {
  margin: 0 0 14px;
  color: var(--text-2);
}

.card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .9);
  box-shadow: var(--shadow-sm);
}

.card + .card {
  margin-top: 12px;
}

.card h4 {
  margin: 0 0 7px;
  color: var(--text);
  font-size: 15px;
}

.card p:last-child,
.card ul:last-child,
.card ol:last-child {
  margin-bottom: 0;
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: 12px;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.mini-card {
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--surface);
}

.mini-card .icon-box,
.plugin-card .icon-box {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  margin-bottom: 10px;
  border-radius: 11px;
  background: var(--blue-soft);
  color: var(--blue-strong);
}

.mini-card .icon-box svg,
.plugin-card .icon-box svg {
  width: 19px;
  height: 19px;
}

.mini-card strong {
  display: block;
  color: var(--text);
  font-size: 14px;
}

.mini-card p,
.mini-card small {
  display: block;
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.62;
}

.step-list {
  display: grid;
  gap: 11px;
  margin: 0;
  padding: 0;
  counter-reset: wiki-step;
  list-style: none;
}

.step-list li {
  position: relative;
  min-height: 66px;
  padding: 14px 16px 14px 58px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #fff;
  counter-increment: wiki-step;
}

.step-list li::before {
  position: absolute;
  top: 15px;
  left: 15px;
  display: grid;
  place-items: center;
  width: 29px;
  height: 29px;
  border-radius: 9px;
  background: var(--blue-soft);
  color: var(--blue-strong);
  font-size: 12px;
  font-weight: 900;
  content: counter(wiki-step);
}

.step-list strong {
  display: block;
  margin-bottom: 2px;
  color: var(--text);
  font-size: 14px;
}

.step-list span {
  color: var(--text-2);
  font-size: 12px;
}

.check-list,
.plain-list {
  display: grid;
  gap: 8px;
  margin: 11px 0;
  padding: 0;
  list-style: none;
}

.check-list li,
.plain-list li {
  position: relative;
  padding-left: 25px;
  color: var(--text-2);
}

.check-list li::before {
  position: absolute;
  top: .42em;
  left: 1px;
  display: grid;
  place-items: center;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--green-soft);
  color: var(--green);
  font-size: 10px;
  font-weight: 900;
  content: "✓";
}

.plain-list li::before {
  position: absolute;
  top: .72em;
  left: 5px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
  content: "";
}

.callout {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 14px 0;
  padding: 15px 16px;
  border: 1px solid #cfe3fa;
  border-radius: 13px;
  background: #f1f8ff;
  color: #38516d;
}

.callout.warning {
  border-color: #f0d7aa;
  background: var(--amber-soft);
  color: #745122;
}

.callout.danger {
  border-color: #f1cbd1;
  background: var(--red-soft);
  color: #7d3d49;
}

.callout.success {
  border-color: #c7e8d5;
  background: var(--green-soft);
  color: #2d6e4b;
}

.callout svg {
  flex: 0 0 19px;
  width: 19px;
  height: 19px;
  margin-top: 2px;
}

.callout strong {
  display: block;
  margin-bottom: 2px;
  color: inherit;
}

.callout p {
  margin: 0;
  font-size: 12px;
  line-height: 1.65;
}

.code-block {
  position: relative;
  overflow: hidden;
  margin: 12px 0 16px;
  border: 1px solid #263a55;
  border-radius: 14px;
  background: #111d2d;
  box-shadow: 0 12px 30px rgba(18, 32, 51, .14);
}

.code-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 38px;
  padding: 0 10px 0 15px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
  color: #aebfd5;
  font-size: 11px;
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 8px;
  border: 0;
  border-radius: 7px;
  background: rgba(255, 255, 255, .09);
  color: #d9e7f7;
  font-size: 10px;
  cursor: pointer;
}

.copy-btn:hover {
  background: rgba(255, 255, 255, .16);
}

pre {
  margin: 0;
  padding: 17px;
  overflow-x: auto;
  color: #dce9f8;
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
  line-height: 1.7;
  tab-size: 2;
}

code {
  padding: 2px 5px;
  border: 1px solid #dbe6f1;
  border-radius: 6px;
  background: #f3f7fb;
  color: #24507c;
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-size: .87em;
  overflow-wrap: anywhere;
}

pre code {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font-size: inherit;
  overflow-wrap: normal;
}

.flow {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 22px;
  margin: 16px 0;
}

.flow-item {
  position: relative;
  min-width: 0;
  padding: 14px 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  text-align: center;
}

.flow-item:not(:last-child)::after {
  position: absolute;
  top: 50%;
  right: -17px;
  width: 10px;
  height: 10px;
  border-top: 2px solid #a7bdd4;
  border-right: 2px solid #a7bdd4;
  content: "";
  transform: translateY(-50%) rotate(45deg);
}

.flow-item b {
  display: block;
  color: var(--text);
  font-size: 12px;
}

.flow-item small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.45;
}

.feature-card {
  scroll-margin-top: 24px;
  margin-top: 18px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, .92);
  box-shadow: var(--shadow-sm);
}

.feature-head {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(110deg, #f3f8ff, #fff 58%, #fafbff);
}

.feature-index {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border: 1px solid #cae1fb;
  border-radius: 14px;
  background: #e8f3ff;
  color: var(--blue-strong);
  font-size: 15px;
  font-weight: 900;
}

.feature-title h3 {
  margin: 0;
  color: var(--text);
  font-size: 21px;
  line-height: 1.25;
}

.feature-title p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.feature-badge {
  padding: 5px 9px;
  border: 1px solid #cce2fa;
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--blue-strong);
  font-size: 10px;
  font-weight: 800;
  white-space: nowrap;
}

.feature-body {
  padding: 20px;
}

.feature-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 14px 0;
}

.point {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface-soft);
}

.point b {
  display: block;
  margin-bottom: 4px;
  color: var(--text);
  font-size: 12px;
}

.point span {
  display: block;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.6;
}

.shot {
  margin: 18px 0 6px;
  padding: 7px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 12px 34px rgba(37, 63, 95, .1);
}

.shot button {
  display: block;
  width: 100%;
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: 11px;
  background: #f0f4f8;
  cursor: zoom-in;
}

.shot img {
  display: block;
  width: 100%;
  height: auto;
}

.shot figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 8px 2px;
  color: var(--muted);
  font-size: 10px;
}

.shot figcaption b {
  color: var(--text-2);
}

.details {
  margin-top: 13px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #fff;
}

.details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 13px 15px;
  color: var(--text);
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
  list-style: none;
}

.details summary::-webkit-details-marker {
  display: none;
}

.details summary::after {
  color: var(--blue-strong);
  font-size: 17px;
  font-weight: 400;
  content: "+";
}

.details[open] summary::after {
  content: "−";
}

.details-content {
  padding: 0 15px 15px;
  border-top: 1px solid var(--line);
  color: var(--text-2);
}

.details-content > :first-child {
  margin-top: 13px;
}

.plugin-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 11px;
}

.plugin-card {
  min-width: 0;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #fff;
}

.plugin-card header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.plugin-card .icon-box {
  flex: 0 0 34px;
  width: 34px;
  height: 34px;
  margin: 0;
}

.plugin-card h4 {
  margin: 0;
  font-size: 13px;
}

.plugin-card h4 small {
  color: var(--muted);
  font-size: 9px;
  font-weight: 700;
}

.plugin-card p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.62;
}

.plugin-notes {
  margin: 9px 0 0;
  padding-left: 15px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.58;
}

.plugin-notes li {
  margin: 4px 0;
}

.plugin-notes b {
  color: var(--text-2);
}

.plugin-card footer {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.tag {
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 9px;
  font-weight: 700;
}

.table-wrap {
  overflow-x: auto;
  margin: 13px 0;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #fff;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

th,
td {
  padding: 11px 13px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: #f4f8fc;
  color: var(--text);
  font-size: 11px;
  white-space: nowrap;
}

td {
  color: var(--text-2);
}

tr:last-child td {
  border-bottom: 0;
}

.support-card {
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 22px;
  align-items: center;
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid #cbe0f7;
  border-radius: 20px;
  background:
    radial-gradient(circle at 90% 20%, rgba(111, 132, 236, .15), transparent 32%),
    linear-gradient(135deg, #edf6ff, #fff 58%, #f4f1ff);
  box-shadow: var(--shadow-md);
}

.support-card h3 {
  margin: 0;
  font-size: clamp(23px, 3vw, 32px);
  line-height: 1.25;
}

.support-card p {
  margin: 10px 0 0;
  color: var(--text-2);
}

.donation-main {
  display: grid;
  grid-template-columns: 164px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  margin-top: 16px;
}

.support-qr {
  margin: 0;
  padding: 8px;
  border: 1px solid rgba(124, 162, 208, .3);
  border-radius: 14px;
  background: rgba(255, 255, 255, .9);
  text-align: center;
}

.support-qr img {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  border-radius: 9px;
  background: #fff;
}

.support-qr figcaption {
  margin-top: 6px;
  color: var(--muted);
  font-size: 9px;
  line-height: 1.45;
}

.donation-copy > p {
  margin-top: 0;
}

.donation-copy > p b {
  color: var(--red);
  font-size: 18px;
}

.compact-list {
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--text-2);
  font-size: 11px;
}

.compact-list li {
  margin: 5px 0;
}

.support-actions {
  display: grid;
  gap: 9px;
}

.support-action {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 13px;
  border: 1px solid rgba(124, 162, 208, .28);
  border-radius: 12px;
  background: rgba(255, 255, 255, .82);
  color: var(--text);
}

.support-action svg {
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  color: var(--blue-strong);
}

.support-action b {
  display: block;
  font-size: 12px;
}

.support-action small {
  display: block;
  color: var(--muted);
  font-size: 10px;
}

.doc-footer {
  margin-top: 30px;
  padding: 18px 0 4px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
  text-align: center;
}

.search-results {
  position: fixed;
  z-index: 110;
  top: 136px;
  left: 14px;
  display: none;
  width: min(420px, calc(100vw - 28px));
  max-height: min(70vh, 620px);
  padding: 8px;
  overflow-y: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, .98);
  box-shadow: var(--shadow-md);
}

.search-results.open {
  display: block;
}

.search-result {
  display: block;
  padding: 10px 11px;
  border-radius: 9px;
  color: var(--text-2);
}

.search-result:hover {
  background: var(--blue-soft);
}

.search-result b {
  display: block;
  color: var(--text);
  font-size: 12px;
}

.search-result small {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 10px;
}

.search-empty {
  padding: 18px;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

.lightbox {
  position: fixed;
  z-index: 120;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 28px;
  background: rgba(12, 20, 31, .88);
  backdrop-filter: blur(8px);
}

.lightbox.open {
  display: flex;
}

.lightbox img {
  width: auto;
  max-width: min(96vw, 1900px);
  max-height: 92vh;
  border-radius: 12px;
  box-shadow: 0 25px 90px rgba(0, 0, 0, .48);
}

.lightbox-close {
  position: fixed;
  top: 16px;
  right: 18px;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 50%;
  background: rgba(255, 255, 255, .1);
  color: #fff;
  font-size: 24px;
  cursor: pointer;
}

.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 60;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid #cae0f8;
  border-radius: 13px;
  opacity: 0;
  background: #fff;
  box-shadow: var(--shadow-md);
  color: var(--blue-strong);
  cursor: pointer;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
}

.back-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-top svg {
  width: 18px;
  height: 18px;
}

body.nav-open {
  overflow: hidden;
}

.nav-mask {
  display: none;
}

@media (max-width: 1260px) {
  .app-shell {
    grid-template-columns: var(--left) minmax(0, 1fr);
  }

  .right-rail {
    display: none;
  }

  .page-main {
    padding-right: clamp(24px, 5vw, 68px);
  }
}

@media (max-width: 900px) {
  html {
    scroll-padding-top: calc(var(--header-mobile) + 14px);
  }

  .app-shell {
    display: block;
  }

  .mobile-bar {
    position: sticky;
    top: 0;
    z-index: 70;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-mobile);
    padding: 0 14px;
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(16px);
  }

  .mobile-bar img {
    width: 148px;
  }

  .mobile-bar button {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #fff;
    color: var(--text-2);
  }

  .mobile-bar svg {
    width: 19px;
    height: 19px;
  }

  .left-rail {
    position: fixed;
    z-index: 100;
    inset: 0 auto 0 0;
    width: min(84vw, 300px);
    height: 100vh;
    box-shadow: var(--shadow-md);
    transform: translateX(-104%);
    transition: transform .22s ease;
  }

  body.nav-open .left-rail {
    transform: translateX(0);
  }

  .nav-mask {
    position: fixed;
    z-index: 95;
    inset: 0;
    display: block;
    opacity: 0;
    background: rgba(13, 25, 39, .42);
    pointer-events: none;
    transition: opacity .2s ease;
  }

  body.nav-open .nav-mask {
    opacity: 1;
    pointer-events: auto;
  }

  .page-main {
    padding: 22px 16px 76px;
  }

  .quick-path {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .search-results {
    top: 136px;
    left: 16px;
    width: min(calc(84vw - 32px), 268px);
  }
}

@media (max-width: 720px) {
  body {
    font-size: 14px;
  }

  .hero {
    padding: 28px 22px;
    border-radius: 19px;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .feature-points,
  .plugin-grid,
  .support-card,
  .donation-main {
    grid-template-columns: 1fr;
  }

  .support-qr {
    width: min(220px, 100%);
  }

  .flow {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .flow-item:not(:last-child)::after {
    top: auto;
    right: 50%;
    bottom: -8px;
    transform: translateX(50%) rotate(135deg);
  }

  .feature-head {
    grid-template-columns: 48px minmax(0, 1fr);
    padding: 16px;
  }

  .feature-index {
    width: 42px;
    height: 42px;
  }

  .feature-badge {
    grid-column: 2;
    justify-self: start;
  }

  .feature-body {
    padding: 16px;
  }

  .shot {
    margin-right: -4px;
    margin-left: -4px;
    padding: 4px;
    border-radius: 12px;
  }

  .shot button,
  .shot img {
    border-radius: 9px;
  }

  .table-wrap {
    margin-right: -2px;
    margin-left: -2px;
  }
}

@media (max-width: 470px) {
  .quick-path {
    grid-template-columns: 1fr;
  }

  .section-heading {
    gap: 10px;
  }

  .section-number {
    flex-basis: 36px;
    width: 36px;
    height: 36px;
  }

  .hero-meta {
    gap: 6px;
  }

  .shot figcaption span {
    display: none;
  }
}

@media print {
  :root {
    --bg: #fff;
  }

  body {
    background: #fff;
    color: #111;
  }

  .left-rail,
  .right-rail,
  .mobile-bar,
  .nav-mask,
  .back-top,
  .search-results,
  .copy-btn {
    display: none !important;
  }

  .app-shell {
    display: block;
  }

  .page-main {
    padding: 0;
  }

  .content-wrap {
    width: 100%;
  }

  .hero,
  .card,
  .feature-card,
  .shot,
  .support-card {
    break-inside: avoid;
    box-shadow: none;
  }

  .doc-section {
    break-before: page;
  }

  .doc-section:first-of-type {
    break-before: auto;
  }
}