:root {
  --color-canvas: #FFFFFF;
  --color-surface: #F7F7F8;
  --color-surface-raised: #FFFFFF;
  --color-engine: #121316;
  --color-engine-side: #17181C;
  --color-engine-active: #1F2127;
  --color-engine-line: #26282E;
  --color-engine-text: #EBEDF1;
  --color-engine-muted: #9AA0AA;
  --color-border: #E4E5E9;
  --color-accent: #FFB224;
  --color-accent-strong: #D98F00;
  --color-text: #17191C;
  --color-text-muted: #5E6470;
  --color-success: #23B8A2;
  --color-warning: #E09A00;
  --color-error: #F0564A;
  --color-overlay: rgba(18, 19, 22, 0.46);
  --color-shadow: rgba(23, 25, 28, 0.18);
  --color-accent-shadow: rgba(217, 143, 0, 0.55);
  --color-success-glow: rgba(35, 184, 162, 0.25);
  --color-accent-glow: rgba(255, 178, 36, 0.24);
  --color-error-glow: rgba(240, 86, 74, 0.25);
  --font-display: 'Inter', 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Consolas, 'Courier New', monospace;
  --radius-large: 24px;
  --radius-medium: 12px;
  --radius-small: 8px;
  --radius-pill: 999px;
  --shadow-soft: 0 24px 64px -32px var(--color-shadow);
  --shadow-fab: 0 10px 28px -12px var(--color-accent-shadow);
  --content-width: 1128px;
  --reading-width: 760px;
  --header-height: 64px;
  --gutter: 32px;
  --space-section: clamp(72px, 9vw, 128px);
  --transition-fast: 150ms ease;
  --transition-reveal: 650ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

html.nav-open {
  overflow: hidden;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: clip;
  background: var(--color-canvas);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main,
section,
article,
aside,
header,
footer,
nav,
figure,
div {
  min-width: 0;
}

img,
svg,
video {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
}

button,
input,
select,
textarea {
  color: inherit;
  font: inherit;
}

button {
  border: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

ul {
  list-style: none;
}

figure,
blockquote,
p,
h1,
h2,
h3,
h4 {
  margin: 0;
}

table {
  border-collapse: collapse;
}

code,
kbd,
samp,
pre {
  font-family: var(--font-mono);
}

:not(pre) > code {
  overflow-wrap: anywhere;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-surface);
  color: var(--color-text);
  padding: 0.12em 0.38em;
  font-size: 0.9em;
}

pre {
  max-width: 100%;
  margin: 24px 0;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  border: 1px solid var(--color-engine-line);
  border-radius: var(--radius-medium);
  background: var(--color-engine);
  color: var(--color-engine-text);
  padding: 20px;
  line-height: 1.7;
  -webkit-overflow-scrolling: touch;
}

pre code {
  color: inherit;
  white-space: pre;
}

::selection {
  background: var(--color-accent);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-accent-strong);
  outline-offset: 3px;
}

.wrap {
  width: 100%;
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.reading-wrap {
  width: 100%;
  max-width: calc(var(--reading-width) + (var(--gutter) * 2));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
}

.section-compact {
  padding-top: clamp(48px, 6vw, 80px);
  padding-bottom: clamp(48px, 6vw, 80px);
}

.decorated-section,
.hero,
.preview-hero,
.orbit-field {
  position: relative;
  overflow-x: clip;
}

h1,
h2,
h3,
h4,
.display-title {
  color: var(--color-text);
  font-family: var(--font-display);
  text-wrap: balance;
}

h1,
.display-title {
  font-size: clamp(34px, 3.4vw, 48px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(28px, 3.2vw, 40px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.018em;
}

h3 {
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 800;
  line-height: 1.25;
}

h4 {
  font-size: 18px;
  font-weight: 800;
}

.title-keep,
.word-keep {
  white-space: nowrap;
}

.eyebrow {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.lead {
  max-width: 720px;
  color: var(--color-text-muted);
  font-size: clamp(17px, 1.8vw, 21px);
  line-height: 1.7;
}

.lead strong,
.prose strong {
  color: var(--color-text);
  font-weight: 750;
}

.muted {
  color: var(--color-text-muted);
}

.mono {
  font-family: var(--font-mono);
}

.prose {
  color: var(--color-text);
  font-size: 17px;
  line-height: 1.82;
}

.prose > * + * {
  margin-top: 1.25em;
}

.prose h2 {
  margin-top: 2.7em;
  scroll-margin-top: calc(var(--header-height) + 28px);
}

.prose h3 {
  margin-top: 2em;
  scroll-margin-top: calc(var(--header-height) + 28px);
}

.prose ul,
.prose ol {
  padding-left: 1.35em;
}

.prose ul {
  list-style: disc;
}

.prose ol {
  list-style: decimal;
}

.prose li + li {
  margin-top: 0.55em;
}

.prose a {
  text-decoration: underline;
  text-decoration-color: var(--color-accent-strong);
  text-underline-offset: 0.2em;
}

.btn,
.btn-primary,
.btn-secondary,
.btn-dark {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  padding: 12px 26px;
  font-size: 15px;
  font-weight: 800;
  line-height: 1.2;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.btn svg,
.btn-primary svg,
.btn-secondary svg,
.btn-dark svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-text);
}

.btn-primary:hover {
  background: var(--color-accent-strong);
  color: var(--color-text);
}

.btn-secondary {
  border-color: var(--color-border);
  background: var(--color-canvas);
  color: var(--color-text);
}

.btn-secondary:hover {
  border-color: var(--color-text-muted);
  background: var(--color-surface);
  color: var(--color-text);
}

.btn-dark {
  background: var(--color-engine);
  color: var(--color-engine-text);
}

.btn-dark:hover {
  background: var(--color-engine-active);
  color: var(--color-engine-text);
}

.btn[aria-disabled="true"],
.btn-primary:disabled,
.btn-secondary:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.panel,
.card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface-raised);
  color: var(--color-text);
}

.panel {
  padding: clamp(22px, 3vw, 36px);
}

.card {
  padding: 24px;
}

.panel-soft {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  color: var(--color-text);
  padding: clamp(22px, 3vw, 36px);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.badge,
.tag,
.status-badge {
  display: inline-flex;
  max-width: 100%;
  min-height: 28px;
  align-items: center;
  gap: 7px;
  overflow: hidden;
  border-radius: var(--radius-pill);
  padding: 5px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.25;
}

.badge {
  background: var(--color-accent);
  color: var(--color-text);
}

.tag {
  border: 1px solid var(--color-border);
  background: var(--color-canvas);
  color: var(--color-text-muted);
}

.status-badge {
  border: 1px solid var(--color-success);
  background: var(--color-canvas);
  color: var(--color-text);
}

.dot {
  width: 7px;
  height: 7px;
  flex-shrink: 0;
  border-radius: var(--radius-pill);
  background: currentColor;
}

.site-top {
  position: relative;
  z-index: 100;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-canvas);
  color: var(--color-text);
}

.top-in {
  display: flex;
  height: var(--header-height);
  align-items: center;
  gap: 34px;
  /* 页头版心比正文宽一档(老站群 --page-width:1280 口径):套正文 .wrap(1128 含衬距,可见仅 1064)
     大屏上 logo/语言钮被挤到屏幕中间,用户对照 clashanzhuang 实锤"导航栏变窄"(2026-08-19) */
  max-width: min(100%, calc(1280px + var(--gutter) * 2));
}

.brand {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 850;
  letter-spacing: -0.01em;
}

.brand-logo {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.top-nav a,
.nav-more-button {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  gap: 6px;
  border-radius: var(--radius-pill);
  background: var(--color-canvas);
  color: var(--color-text-muted);
  padding: 8px 13px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.top-nav a:hover,
.nav-more-button:hover {
  background: var(--color-surface);
  color: var(--color-text);
}

.top-nav a[aria-current="page"] {
  color: var(--color-text);
  font-weight: 800;
}

.nav-more {
  position: relative;
}

.nav-more-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  display: none;
  width: 180px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-canvas);
  color: var(--color-text);
  padding: 8px;
  box-shadow: var(--shadow-soft);
}

.nav-more.is-open .nav-more-menu {
  display: block;
}

.nav-more-menu a {
  width: 100%;
  border-radius: var(--radius-small);
}

.header-tools {
  display: flex;
  margin-left: auto;
  align-items: center;
  gap: 8px;
}

.language-box {
  position: relative;
}

.language-button {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-canvas);
  color: var(--color-text-muted);
  padding: 7px 14px;
  font-size: 13px;
  cursor: pointer;
}

.language-button:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text);
}

.language-short {
  display: none;
}

.language-menu {
  position: absolute;
  top: calc(100% + 9px);
  right: 0;
  display: none;
  width: 178px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-canvas);
  color: var(--color-text);
  padding: 8px;
  box-shadow: var(--shadow-soft);
}

.language-box.is-open .language-menu {
  display: block;
}

.language-menu a {
  display: flex;
  min-height: 42px;
  align-items: center;
  border-radius: var(--radius-small);
  padding: 9px 11px;
  font-size: 13px;
}

.language-menu a:hover,
.language-menu a[aria-current="true"] {
  background: var(--color-surface);
  color: var(--color-text);
}

.menu-toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-pill);
  background: var(--color-canvas);
  color: var(--color-text);
  cursor: pointer;
}

.menu-toggle svg {
  width: 21px;
  height: 21px;
}

.mobile-drawer {
  display: none;
}

.mobile-veil {
  display: none;
}

.site-footer {
  margin-top: var(--space-section);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.8fr 1.5fr 0.8fr;
  gap: 42px;
  padding-top: 64px;
  padding-bottom: 52px;
}

.footer-brand p {
  max-width: 300px;
  margin-top: 16px;
  color: var(--color-text-muted);
  font-size: 14px;
}

.footer-title {
  margin-bottom: 14px;
  color: var(--color-text);
  font-size: 13px;
  font-weight: 800;
}

.footer-links {
  display: grid;
  gap: 9px;
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: 13px;
}

.footer-links a:hover {
  color: var(--color-text);
}

.footer-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-keywords a {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-canvas);
  color: var(--color-text-muted);
  padding: 6px 10px;
  font-size: 12px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--color-border);
  padding-top: 22px;
  padding-bottom: 28px;
  color: var(--color-text-muted);
  font-size: 12px;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--transition-reveal), transform var(--transition-reveal);
}

.reveal.shown {
  opacity: 1;
  transform: none;
}

.tilt,
.tilt-card {
  transform: rotate(-0.35deg);
}

.table-wrap {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  min-width: 620px;
  background: var(--color-canvas);
  color: var(--color-text);
  text-align: left;
}

.data-table th,
.data-table td {
  border-bottom: 1px solid var(--color-border);
  padding: 14px 16px;
  vertical-align: top;
}

.data-table th {
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 13px;
}

.data-table td {
  color: var(--color-text-muted);
}

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

@media (max-width: 960px) {
  .top-nav {
    display: none;
  }

  .header-tools {
    margin-left: auto;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .mobile-veil {
    position: fixed;
    inset: var(--header-height) 0 0;
    z-index: 90;
    background: var(--color-overlay);
  }

  .mobile-veil.is-open {
    display: block;
  }

  .mobile-drawer {
    position: fixed;
    top: var(--header-height);
    right: 0;
    z-index: 110;
    display: none;
    width: min(88vw, 360px);
    max-height: calc(100dvh - var(--header-height));
    overflow-y: auto;
    overscroll-behavior: contain;
    border-left: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    border-radius: 0 0 0 var(--radius-large);
    background: var(--color-canvas);
    color: var(--color-text);
    padding: 12px;
  }

  .mobile-drawer.is-open {
    display: block;
  }

  .mobile-drawer ul {
    display: grid;
    gap: 3px;
  }

  .mobile-drawer a {
    display: flex;
    width: 100%;
    min-height: 48px;
    align-items: center;
    border-radius: var(--radius-small);
    padding: 12px 14px;
    color: var(--color-text);
    font-weight: 650;
  }

  .mobile-drawer a:hover,
  .mobile-drawer a[aria-current="page"] {
    background: var(--color-surface);
    color: var(--color-text);
  }

  .mobile-language-title {
    margin: 15px 14px 7px;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
  }

  .desktop-language-menu {
    display: none;
  }

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

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

@media (max-width: 768px) {
  h1,
  .display-title {
    font-size: clamp(24px, 7vw, 30px);
    line-height: 1.14;
    letter-spacing: -0.015em;
  }

  h2 {
    font-size: clamp(24px, 6.5vw, 32px);
  }

  .lead {
    font-size: 17px;
  }

  .language-full {
    display: none;
  }

  .language-short {
    display: inline;
  }
}

@media (max-width: 640px) {
  :root {
    --gutter: 18px;
  }

  .top-in {
    gap: 12px;
  }

  .brand {
    font-size: 15px;
  }

  .brand-logo {
    width: 28px;
    height: 28px;
  }

  .language-button {
    min-width: 44px;
    justify-content: center;
    padding-inline: 10px;
  }

  .button-row {
    align-items: stretch;
  }

  .button-row .btn,
  .button-row .btn-primary,
  .button-row .btn-secondary,
  .button-row .btn-dark {
    flex: 1 1 100%;
  }

  .card-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    gap: 30px;
    padding-top: 48px;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .tilt,
  .tilt-card,
  [class*="tilt"] {
    transform: none;
  }

  .badge-row,
  .chip-row,
  .platform-row {
    flex-flow: row wrap;
    justify-content: center;
  }

  .prose {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}