/* ============================================
   球王会 Site CSS /assets/site.css
   共享样式：变量、重置、排版、头部、页脚、通用组件
   ============================================ */

/* ---------- 1. CSS 变量 ---------- */
:root {
  --color-bg: #0C0D0A;
  --color-pitch: #0B3B24;
  --color-gold: #C9A227;
  --color-cream: #F4EFE6;
  --color-moss-gray: #A9B29E;
  --color-ink: #1A1C17;
  --color-clay: #A85432;
  --color-sand: #E0B84D;
  --color-teal: #2D7A6B;
  --color-brown: #6B4A35;

  --color-text: var(--color-cream);
  --color-text-secondary: var(--color-moss-gray);
  --color-border: rgba(201, 162, 39, .22);
  --color-border-gold: rgba(201, 162, 39, .55);

  --font-display: Impact, 'Arial Black', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Roboto Mono', Consolas, 'Courier New', monospace;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;

  --text-xs: .75rem;
  --text-sm: .875rem;
  --text-base: 1rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: 2rem;
  --text-3xl: 2.5rem;
  --text-4xl: 3.25rem;
  --text-5xl: 4rem;
  --text-6xl: 5rem;
  --text-7xl: 7.5rem;

  --space-2xs: .25rem;
  --space-xs: .5rem;
  --space-sm: .75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  --container-max: 1440px;
  --container-pad: clamp(20px, 4vw, 48px);
  --header-h: 84px;
  --cut-sm: 10px;
  --cut-md: 20px;
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --dur-fast: .25s;
  --dur-base: .4s;
}

/* ---------- 2. 重置与基础 ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
}

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

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

button {
  cursor: pointer;
}

ul, ol {
  padding-left: 1.2em;
}

a {
  color: var(--color-teal);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--color-gold);
}

/* ---------- 3. 排版 ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: .02em;
  color: var(--color-text);
  text-wrap: balance;
}

h1 {
  font-size: clamp(var(--text-4xl), 7vw, var(--text-7xl));
}

h2 {
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
}

h3 {
  font-size: clamp(var(--text-lg), 2.5vw, var(--text-2xl));
}

p {
  text-wrap: pretty;
}

::selection {
  background: var(--color-gold);
  color: var(--color-bg);
}

/* ---------- 4. 基础布局 ---------- */
.container {
  width: min(100% - 2 * var(--container-pad), var(--container-max));
  margin-inline: auto;
}

.section {
  padding-block: var(--space-3xl);
}

.section-header {
  margin-bottom: var(--space-2xl);
  display: flex;
  align-items: flex-end;
  gap: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.section-index {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-gold);
  opacity: .35;
  line-height: 1;
  letter-spacing: .02em;
}

.section-title {
  font-size: var(--text-2xl);
  font-weight: 900;
  letter-spacing: .04em;
  margin: 0;
}

.section-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin: var(--space-sm) 0 0;
  max-width: 70ch;
}

/* ---------- 5. 无障碍 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 3000;
  background: var(--color-gold);
  color: var(--color-bg);
  padding: 12px 22px;
  font-weight: 700;
  font-size: var(--text-sm);
  text-decoration: none;
  border-radius: 0;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  transform: translateY(-160%);
  transition: transform var(--dur-base) var(--ease-out);
}

.skip-link:focus {
  transform: translateY(0);
  outline: none;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 6. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(12, 13, 10, .97);
  border-bottom: 2px solid var(--color-gold);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
  position: relative;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
  position: relative;
  padding-right: 18px;
}

.brand-text {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 900;
  letter-spacing: .08em;
  color: var(--color-cream);
  line-height: 1;
  text-transform: uppercase;
}

.brand::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  width: 8px;
  height: 8px;
  background: var(--color-gold);
  transform: rotate(45deg) translateY(-50%);
  transform-origin: right top;
}

.brand:hover {
  color: var(--color-gold);
}

.brand:hover .brand-text {
  color: var(--color-gold);
}

/* 主导航 */
.main-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  gap: var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  margin: 0;
}

.nav-link {
  position: relative;
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: 12px 6px;
  transition: color var(--dur-fast) var(--ease-out);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-gold);
}

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

.nav-link[aria-current="page"]::after {
  content: '';
  position: absolute;
  left: 6px;
  right: 6px;
  bottom: 2px;
  height: 2px;
  background: var(--color-gold);
  transform: skewX(-30deg);
}

/* 头部工具区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-shrink: 0;
}

.league-switch {
  display: flex;
  background: var(--color-ink);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  overflow: hidden;
}

.league-tab {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: .1em;
  padding: 9px 14px 8px;
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
  position: relative;
}

.league-tab + .league-tab {
  border-left: 1px solid var(--color-border);
}

.league-tab:hover,
.league-tab:focus-visible {
  color: var(--color-gold);
  outline-offset: -2px;
}

.league-tab.is-active {
  background: var(--color-pitch);
  color: var(--color-gold);
}

.season-chip {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-gold);
  border: 1px solid var(--color-border-gold);
  padding: 7px 10px 6px;
  letter-spacing: .08em;
  background: transparent;
  white-space: nowrap;
}

/* 移动端按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: transparent;
  border: 1px solid var(--color-border-gold);
  padding: 12px 11px;
  border-radius: 2px;
  margin-left: auto;
  flex-shrink: 0;
  transition: border-color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}

.nav-toggle:hover,
.nav-toggle[aria-expanded="true"] {
  background: rgba(201, 162, 39, .08);
  border-color: var(--color-gold);
}

.nav-toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-gold);
  transition: transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  background: var(--color-pitch);
  color: var(--color-cream);
  border-top: 2px solid var(--color-gold);
  margin-top: var(--space-4xl);
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 72%, rgba(201, 162, 39, .05) 72%, rgba(201, 162, 39, .05) 74%, transparent 74%);
  pointer-events: none;
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-3xl) var(--container-pad) var(--space-xl);
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1.3fr;
  gap: var(--space-2xl);
}

.footer-brand {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 900;
  color: var(--color-cream);
  text-decoration: none;
  letter-spacing: .08em;
  line-height: 1;
  display: inline-block;
  position: relative;
  padding-bottom: 8px;
}

.footer-brand::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 52px;
  height: 2px;
  background: var(--color-gold);
  transform: skewX(-30deg);
}

.footer-tagline {
  font-size: var(--text-sm);
  color: var(--color-moss-gray);
  line-height: 1.8;
  margin-top: var(--space-lg);
  max-width: 34ch;
}

.footer-title {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-lg);
  padding-bottom: 10px;
  position: relative;
  font-family: var(--font-body);
}

.footer-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 32px;
  height: 2px;
  background: var(--color-gold);
  transform: skewX(-30deg);
}

.footer-link-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-link-list li {
  margin-bottom: 10px;
}

.footer-link-list a {
  color: var(--color-moss-gray);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: color var(--dur-fast) var(--ease-out), padding-left var(--dur-fast) var(--ease-out);
  display: inline-block;
  position: relative;
}

.footer-link-list a::before {
  content: '▸';
  position: absolute;
  left: -14px;
  color: var(--color-gold);
  opacity: 0;
  transition: opacity var(--dur-fast) var(--ease-out), left var(--dur-fast) var(--ease-out);
  font-size: 12px;
}

.footer-link-list a:hover,
.footer-link-list a:focus-visible {
  color: var(--color-gold);
  padding-left: 6px;
}

.footer-link-list a:hover::before,
.footer-link-list a:focus-visible::before {
  opacity: 1;
  left: -10px;
}

.footer-contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.footer-contact-list li {
  font-size: var(--text-sm);
  color: var(--color-moss-gray);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
}

.contact-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-gold);
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 2px;
  opacity: .8;
}

.footer-legal {
  border-top: 1px solid rgba(244, 239, 230, .14);
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: space-between;
  align-items: center;
}

.footer-legal-links {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.footer-legal-links a {
  color: var(--color-moss-gray);
  font-size: var(--text-xs);
  text-decoration: none;
  letter-spacing: .08em;
  transition: color var(--dur-fast) var(--ease-out);
}

.footer-legal-links a:hover,
.footer-legal-links a:focus-visible {
  color: var(--color-gold);
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: .04em;
  color: var(--color-moss-gray);
  margin: 0;
}

/* ---------- 8. 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  padding: 13px 30px 12px;
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: .08em;
  text-decoration: none;
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
  position: relative;
}

.btn-gold {
  background: var(--color-gold);
  color: var(--color-bg);
}

.btn-gold:hover,
.btn-gold:focus-visible {
  background: var(--color-sand);
  color: var(--color-bg);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201, 162, 39, .25);
}

.btn-ghost {
  background: transparent;
  color: var(--color-gold);
  border-color: var(--color-gold);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  background: rgba(201, 162, 39, .1);
  color: var(--color-gold);
  transform: translateY(-2px);
}

.btn-pitch {
  background: var(--color-pitch);
  color: var(--color-cream);
  border-color: rgba(244, 239, 230, .15);
}

.btn-pitch:hover,
.btn-pitch:focus-visible {
  background: rgba(11, 59, 36, .8);
  color: var(--color-cream);
  transform: translateY(-2px);
}

/* ---------- 9. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  align-items: center;
  margin-bottom: var(--space-xl);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.breadcrumb a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--color-gold);
}

.breadcrumb-sep {
  color: var(--color-gold);
  opacity: .6;
  padding: 0 2px;
}

/* ---------- 10. 通用组件 ---------- */
.data-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--color-gold);
  letter-spacing: -.02em;
}

.index-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.gold-line {
  height: 2px;
  border: none;
  background: linear-gradient(90deg, var(--color-gold) 0%, transparent 100%);
  margin-block: var(--space-xl);
}

.gold-slash {
  display: inline-block;
  width: 44px;
  height: 3px;
  background: var(--color-gold);
  transform: skewX(-30deg);
  vertical-align: middle;
}

.chamfer {
  background: var(--color-surface);
  padding: var(--space-xl);
  clip-path: polygon(var(--cut-md) 0, 100% 0, 100% calc(100% - var(--cut-md)), calc(100% - var(--cut-md)) 100%, 0 100%, 0 var(--cut-md));
}

.tag {
  display: inline-block;
  padding: 4px 10px 3px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: .1em;
  line-height: 1.4;
  border-radius: 0;
  border: 1px solid transparent;
}

.tag-clay {
  background: rgba(168, 84, 50, .18);
  border-color: rgba(168, 84, 50, .6);
  color: var(--color-clay);
}

.tag-sand {
  background: rgba(224, 184, 77, .14);
  border-color: rgba(224, 184, 77, .5);
  color: var(--color-sand);
}

.tag-teal {
  background: rgba(45, 122, 107, .16);
  border-color: rgba(45, 122, 107, .55);
  color: var(--color-teal);
}

.tag-gold {
  background: rgba(201, 162, 39, .12);
  border-color: rgba(201, 162, 39, .5);
  color: var(--color-gold);
}

.diag-bg {
  background-image: repeating-linear-gradient(135deg, transparent 0, transparent 18px, rgba(201, 162, 39, .035) 18px, rgba(201, 162, 39, .035) 20px);
}

/* ---------- 11. 折叠面板 ---------- */
.accordion {
  border-top: 1px solid var(--color-border);
}

.accordion-item {
  border-bottom: 1px solid var(--color-border);
}

.accordion-btn {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  padding: var(--space-lg) var(--space-md);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--color-cream);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  transition: color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}

.accordion-btn:hover,
.accordion-btn:focus-visible {
  color: var(--color-gold);
  background: rgba(201, 162, 39, .04);
}

.accordion-icon {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  position: relative;
  display: inline-block;
}

.accordion-icon::before,
.accordion-icon::after {
  content: '';
  position: absolute;
  background: var(--color-gold);
  transition: transform var(--dur-base) var(--ease-out), opacity var(--dur-base) var(--ease-out);
}

.accordion-icon::before {
  top: 7px;
  left: 0;
  right: 0;
  height: 2px;
}

.accordion-icon::after {
  left: 7px;
  top: 0;
  bottom: 0;
  width: 2px;
}

.accordion-item[data-open] .accordion-icon::after {
  transform: rotate(90deg);
  opacity: 0;
}

.accordion-panel {
  display: none;
  padding: 0 var(--space-md) var(--space-lg);
  color: var(--color-text-secondary);
  line-height: 1.8;
  font-size: var(--text-sm);
}

.accordion-item[data-open] .accordion-panel {
  display: block;
  animation: accordion-fade var(--dur-base) var(--ease-out);
}

@keyframes accordion-fade {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 12. 图片框架 ---------- */
.img-frame {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(11, 59, 36, .75) 0%, var(--color-bg) 100%);
  border-left: 2px solid var(--color-gold);
  aspect-ratio: 16 / 9;
  width: 100%;
}

.img-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: .85;
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}

.img-frame:hover img,
.img-frame:focus-within img {
  opacity: 1;
  transform: scale(1.015);
}

.frame-label {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--color-cream);
  background: linear-gradient(90deg, rgba(12, 13, 10, .85) 0%, rgba(12, 13, 10, .55) 100%);
  padding: 8px 16px 7px;
  border-left: 2px solid var(--color-gold);
}

/* ---------- 13. 显现动效 ---------- */
.reveal-ready {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}

.reveal-ready.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 14. 响应式断点 ---------- */
@media (max-width: 1280px) {
  .header-inner {
    gap: var(--space-lg);
  }

  .nav-list {
    gap: var(--space-sm);
  }

  .nav-link {
    font-size: .8125rem;
    padding-left: 4px;
    padding-right: 4px;
  }

  .footer-grid {
    grid-template-columns: 1.2fr 1fr 1fr 1.2fr;
    gap: var(--space-xl);
  }
}

@media (max-width: 1024px) {
  .header-inner {
    padding-block: 12px;
    min-height: auto;
  }

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

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

  .main-nav {
    display: none;
    flex-basis: 100%;
    order: 10;
    margin-left: 0;
    border-top: 1px solid var(--color-border);
    background: rgba(11, 59, 36, .97);
    margin: 8px calc(var(--container-pad) * -1) calc(var(--container-pad) * -1);
    padding: 0 var(--container-pad);
  }

  .main-nav[data-open] {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    gap: 0;
    padding: var(--space-sm) 0 var(--space-md);
  }

  .nav-item {
    border-bottom: 1px solid rgba(201, 162, 39, .12);
  }

  .nav-item:last-child {
    border-bottom: none;
  }

  .nav-link {
    display: block;
    padding: 14px 4px;
    font-size: var(--text-base);
  }

  .nav-link[aria-current="page"]::after {
    left: 4px;
    bottom: 4px;
    width: 36px;
  }

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

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

@media (max-width: 768px) {
  .header-inner {
    gap: var(--space-sm) var(--space-md);
  }

  .header-actions {
    flex-basis: 100%;
    order: 3;
    margin-left: 0;
  }

  .league-switch {
    width: 100%;
  }

  .league-tab {
    flex: 1;
    text-align: center;
    padding: 10px 8px 9px;
  }

  .season-chip {
    margin-left: 0;
  }

  .section-header {
    gap: var(--space-md);
  }

  .section-index {
    font-size: var(--text-2xl);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

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

  .footer-legal {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }
}

@media (max-width: 480px) {
  .season-chip {
    display: none;
  }

  .brand-text {
    font-size: 28px;
  }

  .btn {
    padding: 12px 22px 11px;
    font-size: var(--text-sm);
  }
}

/* ---------- 15. 动效与降级兼容 ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  .reveal-ready {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .accordion-panel {
    animation: none !important;
  }
}