/* 云开赛场 · 全站共享样式 /assets/site.css */

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

html {
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  scroll-behavior: smooth;
}

body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
ul,
ol,
dl,
dd,
figure,
blockquote,
pre,
fieldset,
legend {
  margin: 0;
}

ul,
ol {
  padding: 0;
}

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

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

a {
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--color-lime);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--color-lime);
  color: var(--color-deep);
}

:root {
  --color-deep: #0d1b26;
  --color-base: #1a2a3a;
  --color-card: rgba(255, 255, 255, .06);
  --color-card-hover: rgba(255, 255, 255, .09);
  --color-ink: #f0f4f8;
  --color-muted: #a8c6df;
  --color-line: #2d4659;
  --color-orange: #ff6b35;
  --color-lime: #c6ff00;
  --color-yellow: #ffd166;
  --font-display: "Anton", "Impact", "Noto Sans SC Black", "PingFang SC", "Heiti SC", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "DIN Alternate", "Barlow Condensed", "Roboto Mono", "SF Mono", monospace;
  --font-serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
  --max-width: 1280px;
  --header-height: 4.75rem;
  --radius-md: .875rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --radius-pill: 999px;
  --space-1: .5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  --space-7: 6rem;
  --z-header: 100;
  --z-scrim: 110;
  --z-nav: 120;
  --z-toggle: 130;
  --z-skip: 999;
  --ease: cubic-bezier(.4, 0, .2, 1);
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-ink);
  background:
    linear-gradient(rgba(255, 255, 255, .018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .018) 1px, transparent 1px),
    var(--color-base);
  background-size: 44px 44px;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

main {
  display: block;
  position: relative;
}

#main-content {
  scroll-margin-top: calc(var(--header-height) + 1rem);
}

html.nav-is-open {
  overflow: hidden;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
  position: relative;
}

.section {
  padding: var(--space-7) 0;
}

.section.is-first {
  padding-top: calc(var(--header-height) + var(--space-6));
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  line-height: 1.15;
  letter-spacing: .02em;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

.lead {
  font-size: 1.125rem;
  line-height: 1.9;
  color: var(--color-muted);
  max-width: 44rem;
}

.page-hero {
  padding: calc(var(--header-height) + var(--space-6)) 0 var(--space-6);
}

.page-title {
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.08;
  margin: 0 0 var(--space-2);
}

/* 跳转链接 */
.skip-link {
  position: fixed;
  top: -100%;
  left: 1rem;
  z-index: var(--z-skip);
  padding: .75rem 1.25rem;
  background: var(--color-lime);
  color: var(--color-deep);
  border-radius: var(--radius-pill);
  font-weight: 700;
  text-decoration: none;
  transition: top .2s;
}

.skip-link:focus-visible {
  top: 1rem;
}

/* 页头 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  padding: .75rem 0 0;
  border-bottom: 1px solid transparent;
  transition: background .35s ease, box-shadow .35s ease, padding .35s ease, border-color .35s ease;
}

.site-header.scrolled {
  padding: 0;
  background: rgba(13, 27, 38, .92);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom-color: var(--color-line);
  box-shadow: 0 18px 40px rgba(0, 0, 0, .3);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: var(--header-height);
}

.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: calc(var(--z-header) + 10);
  background: linear-gradient(90deg, var(--color-orange), var(--color-lime));
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
}

.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: var(--z-scrim);
  background: rgba(0, 0, 0, .55);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  text-decoration: none;
  color: var(--color-ink);
  flex: 0 0 auto;
}

.brand-mark {
  position: relative;
  flex: 0 0 auto;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: .9375rem;
  background: linear-gradient(135deg, rgba(255, 107, 53, .22), rgba(198, 255, 0, .16)), var(--color-base);
  border: 1px solid var(--color-line);
  display: grid;
  place-items: center;
  overflow: hidden;
  transition: border-color .25s, box-shadow .25s;
}

.brand:hover .brand-mark {
  border-color: var(--color-lime);
  box-shadow: 0 0 0 4px rgba(198, 255, 0, .1);
}

.brand-mark::before {
  content: '';
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 32%, var(--color-lime), var(--color-orange));
  box-shadow: 0 0 14px rgba(198, 255, 0, .45);
}

.brand-mark::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 40%, rgba(255, 255, 255, .2) 50%, transparent 60%);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand-text strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: .02em;
  text-transform: uppercase;
}

.brand-text small {
  font-size: .6875rem;
  color: var(--color-muted);
  letter-spacing: .3em;
  font-family: var(--font-serif);
}

/* 导航 */
.site-nav {
  margin-left: auto;
  background: rgba(13, 27, 38, .5);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: var(--radius-pill);
  padding: .4rem;
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition: background .3s ease;
}

.site-header.scrolled .site-nav {
  background: rgba(26, 42, 58, .75);
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: .1rem;
}

.nav-link {
  display: block;
  padding: .55rem 1rem;
  border-radius: var(--radius-pill);
  font-size: .875rem;
  font-weight: 600;
  color: var(--color-ink);
  text-decoration: none;
  letter-spacing: .02em;
  white-space: nowrap;
  transition: background .25s, color .25s;
}

.nav-link:hover {
  color: var(--color-lime);
  background: rgba(198, 255, 0, .06);
}

.nav-link[aria-current="page"] {
  background: var(--color-lime);
  color: var(--color-deep);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: .75rem;
  flex: 0 0 auto;
}

.header-status {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .45rem 1rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-line);
  background: rgba(255, 255, 255, .05);
  font-size: .75rem;
  font-family: var(--font-mono);
  letter-spacing: .06em;
  color: var(--color-muted);
  white-space: nowrap;
}

.header-status i {
  width: .45rem;
  height: .45rem;
  border-radius: 50%;
  background: var(--color-lime);
  box-shadow: 0 0 0 3px rgba(198, 255, 0, .15), 0 0 12px rgba(198, 255, 0, .6);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: .55;
    transform: scale(.85);
  }
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: .35rem;
  width: 3rem;
  height: 3rem;
  border-radius: 1rem;
  border: 1px solid var(--color-line);
  background: rgba(25, 41, 58, .92);
  cursor: pointer;
  padding: 0;
  position: relative;
  z-index: var(--z-toggle);
}

.nav-toggle:hover {
  border-color: var(--color-lime);
}

.nav-toggle-line {
  display: block;
  width: 1.25rem;
  height: 2px;
  border-radius: 2px;
  background: var(--color-ink);
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) {
  transform: translateY(.45rem) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) {
  transform: translateY(-.45rem) rotate(-45deg);
}

/* 页脚 */
.site-footer {
  position: relative;
  overflow: hidden;
  background: var(--color-deep);
  border-top: 1px solid var(--color-line);
  margin-top: var(--space-7);
}

.footer-watermark {
  position: absolute;
  right: -1%;
  bottom: -.3em;
  z-index: 0;
  font-family: var(--font-display);
  font-size: clamp(8rem, 24vw, 22rem);
  line-height: 1;
  color: rgba(255, 255, 255, .028);
  letter-spacing: .06em;
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
}

.footer-top {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: var(--space-5);
  padding: var(--space-7) 0 var(--space-6);
}

.footer-brand {
  max-width: 24rem;
}

.brand-footer {
  margin-bottom: 1.25rem;
}

.brand-footer .brand-mark {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: .8125rem;
}

.footer-trust {
  margin: 0;
  color: var(--color-muted);
  font-size: .875rem;
  line-height: 1.8;
  border-left: 2px solid var(--color-orange);
  padding-left: 1rem;
}

.footer-col h3 {
  font-family: var(--font-display);
  font-size: .9375rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--color-lime);
  margin: 0 0 1.25rem;
  position: relative;
  padding-bottom: .5rem;
}

.footer-col h3::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 2rem;
  height: 2px;
  background: var(--color-orange);
  border-radius: 2px;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .65rem;
}

.footer-links a {
  color: rgba(240, 244, 248, .8);
  text-decoration: none;
  font-size: .875rem;
  transition: color .2s, padding-left .2s;
}

.footer-links a:hover {
  color: var(--color-yellow);
  padding-left: .3rem;
}

.footer-bottom {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--color-line);
  background: rgba(0, 0, 0, .24);
  padding: 1.15rem 0;
}

.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem 2rem;
  align-items: baseline;
  font-size: .8125rem;
  color: var(--color-muted);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* 章节 */
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: .2rem 1.2rem;
  padding-left: 1.4rem;
  border-left: 3px solid var(--color-line);
  position: relative;
  margin-bottom: var(--space-5);
}

.section-head::before {
  content: '';
  position: absolute;
  left: -3px;
  top: 0;
  width: 3px;
  height: 2.4em;
  background: var(--color-orange);
  border-radius: 3px;
}

.chapter-no {
  flex: 0 0 100%;
  font-family: var(--font-mono);
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .24em;
  color: var(--color-orange);
  text-transform: uppercase;
}

.chapter-no::after {
  content: '——';
  margin-left: .5em;
  color: var(--color-line);
  letter-spacing: .2em;
}

.section-title {
  font-size: clamp(1.875rem, 4vw, 3rem);
  line-height: 1.1;
  margin: 0;
}

.section-title em {
  font-style: normal;
  color: var(--color-orange);
}

.section-sub {
  flex: 1 1 100%;
  color: var(--color-muted);
  max-width: 40rem;
  font-size: .9375rem;
}

.axis-note {
  writing-mode: vertical-rl;
  font-family: var(--font-serif);
  font-size: .75rem;
  color: var(--color-muted);
  letter-spacing: .3em;
  line-height: 1.9;
  white-space: nowrap;
  margin-left: .5rem;
  opacity: .85;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .75rem 1.5rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: .9375rem;
  text-decoration: none;
  cursor: pointer;
  line-height: 1.4;
  transition: transform .2s var(--ease), background .2s, border-color .2s, color .2s;
}

.btn:focus-visible {
  outline: 2px solid var(--color-lime);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--color-orange);
  color: #08131c;
}

.btn-primary:hover {
  background: #ff8659;
  transform: translateY(-2px);
}

.btn-outline {
  border-color: var(--color-line);
  color: var(--color-ink);
  background: rgba(255, 255, 255, .04);
}

.btn-outline:hover {
  border-color: var(--color-lime);
  color: var(--color-lime);
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .25rem .8rem;
  border-radius: var(--radius-pill);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .05em;
  line-height: 1.6;
  border: 1px solid var(--color-line);
  color: var(--color-muted);
  background: rgba(255, 255, 255, .04);
  white-space: nowrap;
}

.tag-lime {
  border-color: transparent;
  background: var(--color-lime);
  color: var(--color-deep);
}

.tag-orange {
  border-color: transparent;
  background: var(--color-orange);
  color: #08131c;
}

.tag-yellow {
  border-color: transparent;
  background: var(--color-yellow);
  color: var(--color-deep);
}

/* 卡片 */
.data-card {
  position: relative;
  background: var(--color-card);
  border: 1px solid rgba(255, 255, 255, .07);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  overflow: hidden;
  transition: transform .25s var(--ease), background .25s, border-color .25s;
}

.data-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-orange), var(--color-lime));
  opacity: 0;
  transition: opacity .3s;
}

.data-card:hover {
  transform: translateY(-3px);
  background: var(--color-card-hover);
  border-color: var(--color-line);
}

.data-card:hover::before {
  opacity: 1;
}

.metric {
  display: grid;
  gap: .3rem;
}

.metric-value {
  font-family: var(--font-mono);
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1;
  color: var(--color-orange);
  letter-spacing: .02em;
  font-variant-numeric: tabular-nums;
}

.metric-label {
  font-size: .8125rem;
  color: var(--color-muted);
  letter-spacing: .05em;
}

/* 面板与研究板 */
.panel {
  background: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-xl);
  padding: clamp(1.25rem, 3vw, 2.5rem);
  position: relative;
}

.board {
  position: relative;
  background: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.board::before {
  content: '';
  position: absolute;
  top: .75rem;
  left: .6rem;
  bottom: .75rem;
  width: 2px;
  background: linear-gradient(180deg, var(--color-orange), var(--color-lime));
  border-radius: 2px;
  opacity: .8;
}

.board-title {
  font-family: var(--font-display);
  font-size: 1.375rem;
  line-height: 1.25;
  margin: 0 0 .5rem;
  padding-left: 1rem;
}

.board-code {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .18em;
  color: var(--color-muted);
  background: rgba(255, 255, 255, .04);
  border: 1px solid var(--color-line);
  padding: .15rem .55rem;
  border-radius: var(--radius-pill);
  margin-left: 1rem;
  margin-bottom: .5rem;
}

.board-body {
  padding-left: 1rem;
  color: var(--color-muted);
  font-size: .875rem;
  line-height: 1.8;
}

.board-foot {
  margin-top: var(--space-3);
  padding-left: 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .75rem;
}

.term {
  display: inline-flex;
  align-items: center;
  gap: .2rem;
  font-family: var(--font-serif);
  font-size: .8125rem;
  color: var(--color-yellow);
  border-bottom: 1px dashed rgba(255, 209, 102, .55);
  cursor: help;
  text-decoration: none;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  color: var(--color-lime);
  text-decoration: none;
  font-size: .875rem;
  font-weight: 600;
  transition: gap .2s var(--ease);
}

.card-link:hover {
  gap: .7rem;
}

.card-link::after {
  content: '→';
  font-family: var(--font-mono);
}

/* 进度与对比 */
.progress-track {
  height: .5rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .06);
  overflow: hidden;
}

.progress-fill {
  display: block;
  height: 100%;
  border-radius: var(--radius-pill);
  background: var(--color-lime);
  transform-origin: 0 50%;
}

.compare-row {
  display: grid;
  gap: .5rem;
  padding: 1rem 0;
}

.compare-labels {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: .8125rem;
  color: var(--color-muted);
}

.compare-labels strong {
  color: var(--color-ink);
  font-weight: 600;
}

.compare-track {
  height: .55rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .06);
  overflow: hidden;
  position: relative;
}

.compare-bar {
  display: block;
  height: 100%;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-orange), #ffb35a);
  transform-origin: 0 50%;
  animation: grow-bar .8s ease-out both;
}

.compare-bar.lime {
  background: linear-gradient(90deg, var(--color-lime), #8fd100);
}

@keyframes grow-bar {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

/* 表格 */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-line);
  background: var(--color-card);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .875rem;
  min-width: 36rem;
}

.data-table th,
.data-table td {
  padding: .85rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(45, 70, 89, .5);
}

.data-table thead th {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .14em;
  color: var(--color-muted);
  text-transform: uppercase;
  border-bottom: 2px solid var(--color-line);
  white-space: nowrap;
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr:hover {
  background: rgba(255, 255, 255, .03);
}

.data-table .num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-orange);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* 图片占位 */
.img-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, .04), transparent 60%),
    var(--color-base);
  border: 1px solid var(--color-line);
  display: grid;
  place-items: center;
}

.img-frame::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(45deg, transparent 0 8px, rgba(198, 255, 0, .05) 8px 9px),
    repeating-linear-gradient(-45deg, transparent 0 12px, rgba(255, 107, 53, .05) 12px 13px);
  opacity: .7;
}

.img-frame::after {
  content: 'KAIYUN MEDIA';
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .4em;
  color: var(--color-muted);
  background: rgba(13, 27, 38, .85);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  padding: .35rem .9rem;
}

/* 网格 */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}

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

.split {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
  gap: var(--space-5);
  align-items: start;
}

.split-rev {
  grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
}

/* 要点数据条带 */
.data-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  list-style: none;
  margin: 0;
  padding: 0;
}

.stat-item {
  background: var(--color-card);
  border: 1px solid rgba(255, 255, 255, .07);
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.25rem;
  display: grid;
  gap: .2rem;
  transition: background .25s, border-color .25s, transform .25s var(--ease);
}

.stat-item:hover {
  background: var(--color-card-hover);
  border-color: var(--color-line);
  transform: translateY(-2px);
}

.stat-item strong {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  line-height: 1.1;
  color: var(--color-orange);
  font-variant-numeric: tabular-nums;
}

.stat-item span {
  font-size: .75rem;
  color: var(--color-muted);
  letter-spacing: .08em;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem .5rem;
  font-size: .8125rem;
  color: var(--color-muted);
  margin: 0 0 var(--space-4);
}

.breadcrumb a {
  color: var(--color-muted);
  text-decoration: none;
  transition: color .2s;
}

.breadcrumb a:hover {
  color: var(--color-lime);
}

.breadcrumb > * + *::before {
  content: '/';
  margin-right: .5rem;
  color: var(--color-line);
}

.breadcrumb [aria-current="page"] {
  color: var(--color-ink);
}

/* 装饰工具 */
.divider-line {
  border: 0;
  height: 1px;
  width: 100%;
  background: linear-gradient(90deg, transparent, var(--color-line), transparent);
  margin: var(--space-5) 0;
}

.weave {
  position: relative;
  overflow: hidden;
}

.weave::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(45deg, transparent 0 14px, rgba(198, 255, 0, .035) 14px 16px),
    repeating-linear-gradient(-45deg, transparent 0 18px, rgba(255, 107, 53, .03) 18px 20px);
  pointer-events: none;
}

/* 滚动显现 */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}

[data-reveal="left"] {
  transform: translateX(-24px);
}

[data-reveal="right"] {
  transform: translateX(24px);
}

[data-reveal="scale"] {
  transform: scale(.94);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

[data-delay="1"] {
  transition-delay: .08s;
}

[data-delay="2"] {
  transition-delay: .16s;
}

[data-delay="3"] {
  transition-delay: .24s;
}

[data-delay="4"] {
  transition-delay: .32s;
}

[data-delay="5"] {
  transition-delay: .4s;
}

/* 响应式 */
@media (max-width: 1100px) {
  .header-status {
    display: none;
  }

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

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(20rem, 88vw);
    margin: 0;
    padding: calc(var(--header-height) + 1.5rem) 1.5rem 2rem;
    border-radius: 0;
    border: none;
    border-left: 1px solid var(--color-line);
    background: rgba(13, 27, 38, .98);
    transform: translateX(108%);
    transition: transform .35s var(--ease);
    overflow-y: auto;
    z-index: var(--z-nav);
    box-shadow: -24px 0 60px rgba(0, 0, 0, .4);
  }

  .site-nav[data-open] {
    transform: translateX(0);
  }

  .nav-list {
    flex-direction: column;
    gap: .35rem;
  }

  .nav-link {
    padding: .9rem 1rem;
    font-size: 1rem;
    border-radius: var(--radius-md);
  }

  .nav-scrim.is-visible {
    opacity: 1;
    pointer-events: auto;
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
  }

  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .split,
  .split-rev {
    grid-template-columns: 1fr;
  }

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

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    padding: var(--space-5) 0 var(--space-4);
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .section {
    padding: var(--space-5) 0;
  }

  .section.is-first {
    padding-top: calc(var(--header-height) + var(--space-5));
  }

  .footer-bottom-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: .35rem;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
}

@media (max-width: 480px) {
  .footer-top {
    grid-template-columns: 1fr;
  }

  .data-strip {
    grid-template-columns: 1fr;
  }

  .brand-text strong {
    font-size: 1rem;
  }

  .brand-text small {
    letter-spacing: .18em;
  }

  .brand-mark {
    width: 2.4rem;
    height: 2.4rem;
    border-radius: .8rem;
  }

  .header-inner {
    gap: .6rem;
  }

  .nav-toggle {
    width: 2.6rem;
    height: 2.6rem;
  }
}

/* 减少动态 */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  [data-reveal] {
    transform: none;
    transition: opacity .2s linear;
  }

  .header-status i,
  .compare-bar {
    animation: none;
  }

  .progress-bar {
    transition: none;
  }

  .site-header,
  .nav-link,
  .btn,
  .data-card,
  .footer-links a,
  .card-link,
  .brand-mark {
    transition-duration: .15s;
  }
}

@media (max-width: 1100px) and (prefers-reduced-motion: reduce) {
  .site-nav {
    transform: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity .2s linear;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
  }

  .nav-scrim {
    transition: opacity .2s linear;
  }
}