:root{
  --bg:#0a0e18; --card:#0f1628; --text:#e7e9ee; --muted:#a8afc2;
  --line:#1a2540; --accent:#7aa2ff; --accent2:#7ef0d9; --accent3:#ff6b9d;
}
*{box-sizing:border-box}
html{
  height:100%;
}
html, body {
  margin: 0;
  padding: 0;
  background: #0d1628;
}

body{
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  min-height:100svh;
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Hiragino Kaku Gothic ProN","Noto Sans JP","PingFang SC","Noto Sans CJK SC",sans-serif;
  color:var(--text);
  scroll-behavior:smooth;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  position:relative;
  overflow-x:hidden;
}

@supports (height:100dvh){
  body{
    min-height:100dvh;
  }
}

a{color:var(--accent);text-decoration:none;transition:all .3s ease}
a:hover{color:var(--accent2)}
.container{max-width:1080px;margin:0 auto;padding:28px 16px;flex:1;width:100%}
.header{
  position:sticky;top:0;
  background:linear-gradient(180deg, rgba(11,13,18,.95) 0%, rgba(11,13,18,.7) 100%);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(122,162,255,.1);
  z-index:10;
  box-shadow:0 8px 20px rgba(0,0,0,.3);
}
.header-inner{
  display:flex;gap:10px;align-items:center;justify-content:space-between;
  padding:10px 16px;max-width:1080px;margin:0 auto;
  flex-wrap:wrap;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  line-height:1.1;
  text-decoration:none;
  transition:transform .3s ease;
  min-width:fit-content;
}

.brand-icon{
  width:56px;
  height:56px;
  border-radius:14px;
  flex:0 0 auto;
  object-fit:contain;
  display:block;
  image-rendering:-webkit-optimize-contrast;
  image-rendering:crisp-edges;
  -ms-interpolation-mode:nearest-neighbor;
  backface-visibility:hidden;
  -webkit-backface-visibility:hidden;
  perspective:1000px;
}

.header .brand-icon{
  width:56px !important;
  height:56px !important;
  image-rendering:-webkit-optimize-contrast !important;
  image-rendering:crisp-edges !important;
}

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

.brand-text .brand-name{
  font-weight:800;
  background:linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}

.brand-text .brand-sub{
  font-size:12px;
  color:var(--muted);
  margin-top:2px;
}

.brand:hover{
  transform:scale(1.05);
}
.brand:hover .brand-name{
  filter:brightness(1.2);
}

/* 平板/手机端稍微大一点，视觉更清晰 */
@media (max-width: 720px){
  .brand-icon{
    width:44px !important;
    height:44px !important;
    border-radius:12px;
    image-rendering:-webkit-optimize-contrast !important;
    image-rendering:crisp-edges !important;
  }
}

.nav{display:flex;flex-wrap:wrap;gap:6px;align-items:center;flex:1;min-width:200px}
.nav a{
  font-size:12px;color:var(--text);opacity:.85;
  padding:6px 10px;border-radius:10px;
  border:1px solid transparent;
  background:rgba(255,255,255,.02);
  transition:all .3s ease;
  position:relative;
  white-space:nowrap;
  animation:slideInDown .5s ease backwards;
}
.nav a:nth-child(1){animation-delay:0.1s}
.nav a:nth-child(2){animation-delay:0.15s}
.nav a:nth-child(3){animation-delay:0.2s}
.nav a:nth-child(4){animation-delay:0.25s}
.nav a:nth-child(5){animation-delay:0.3s}
.nav a::before{
  content:'';position:absolute;bottom:0;left:0;right:0;
  height:2px;background:linear-gradient(90deg, var(--accent), var(--accent2));
  transform:scaleX(0);transform-origin:left;
  transition:transform .3s ease;
}
.nav a:hover{
  border-color:var(--accent);
  background:linear-gradient(135deg, rgba(122,162,255,.1) 0%, rgba(126,240,217,.05) 100%);
  text-decoration:none;
  opacity:1;
}
.nav a:hover::before{transform:scaleX(1)}
.lang{display:flex;gap:6px;align-items:center}
.lang a{
  font-size:11px;color:var(--muted);
  border:1px solid var(--line);
  padding:5px 8px;border-radius:8px;
  background:rgba(255,255,255,.01);
  transition:all .3s ease;
}
.lang a:hover{
  color:var(--text);
  border-color:var(--accent);
  background:rgba(122,162,255,.1);
  text-decoration:none;
}
.hero{
  padding:45px 24px;
  background:linear-gradient(135deg, rgba(122,162,255,.08) 0%, rgba(126,240,217,.04) 100%);
  border-radius:18px;
  border:1px solid rgba(122,162,255,.12);
  animation:fadeInDown .8s ease;
  margin-bottom:16px;
  position:relative;
  overflow:hidden;
}
.hero-bg{
  position:absolute;
  top:0;left:0;
  width:100%;
  height:100%;
  z-index:1;
  pointer-events:none;
  opacity:0.5;
}

/* 背景媒体层：图片或短循环视频（默认使用图片占位，视频可选） */
.hero-media{
  position:absolute;
  top:0;left:0;width:100%;height:100%;
  z-index:0;pointer-events:none;
  background-size:cover;background-position:center center;
  filter:brightness(.6) saturate(.95);
  transition:opacity 0.6s ease;
}
.hero-media video{
  width:100%;height:100%;object-fit:cover;display:block;
}

/* 延迟加载样式：初始状态无背景 */
.hero-media[data-src]{
  opacity:0.5;
}
.hero-media[data-src].loaded{
  opacity:1;
}

@media(max-width:640px){
  /* 移动端关闭视频以节省流量：只显示背景图 */
  .hero-media video{display:none}
}
.hero::before{
  content:'';
  position:absolute;
  top:-50%;
  right:-50%;
  width:200%;
  height:200%;
  background:radial-gradient(circle, rgba(122,162,255,.1) 0%, transparent 70%);
  animation:float 20s ease-in-out infinite;
  opacity:0.5;
}
.hero::after{
  content:'';
  position:absolute;
  bottom:-50%;
  left:-50%;
  width:200%;
  height:200%;
  background:radial-gradient(circle, rgba(126,240,217,.08) 0%, transparent 70%);
  animation:float 25s ease-in-out infinite reverse;
  opacity:0.3;
}
.h1{
  font-size:42px;letter-spacing:.2px;margin:0 0 10px;
  background:linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  font-weight:700;
  line-height:1.2;
}
.h2{
  font-size:16px;color:var(--muted);margin:0 0 18px;max-width:860px;
  line-height:1.8;animation:fadeInUp .8s ease .2s backwards;
}
.badges{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 18px}
.badge{
  font-size:11px;color:var(--text);
  border:1px solid var(--accent);
  background:linear-gradient(135deg, rgba(122,162,255,.1) 0%, rgba(126,240,217,.05) 100%);
  padding:6px 12px;border-radius:999px;
  transition:all .3s ease;
  display:inline-block;
  animation:slideInRight .5s ease backwards;
}
.badge:nth-child(1){animation-delay:0s}
.badge:nth-child(2){animation-delay:0.1s}
.badge:nth-child(3){animation-delay:0.2s}
.badge:hover{
  background:linear-gradient(135deg, rgba(122,162,255,.2) 0%, rgba(126,240,217,.1) 100%);
  transform:translateY(-2px) scale(1.05);
  animation:borderGlow .6s ease infinite;
}
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:16px;margin:30px 0}
.card{
  grid-column:span 12;
  background:linear-gradient(135deg, 
    rgba(15,22,40,1) 0%, 
    rgba(15,22,40,.8) 50%, 
    rgba(126,240,217,.05) 100%);
  border:1px solid rgba(122,162,255,.15);
  border-radius:16px;
  padding:24px;
  transition:all .4s cubic-bezier(.4,.0,.2,1);
  position:relative;
  overflow:hidden;
  box-shadow:0 8px 32px rgba(0,0,0,.2);
  animation:slideInUp .6s ease backwards;
}
.card:nth-child(1){animation-delay:0.1s}
.card:nth-child(2){animation-delay:0.2s}
.card:nth-child(3){animation-delay:0.3s}
.card:nth-child(4){animation-delay:0.4s}
.card:nth-child(5){animation-delay:0.5s}
.card::before{
  content:'';
  position:absolute;top:0;left:-100%;width:100%;height:100%;
  background:linear-gradient(90deg, transparent, rgba(126,240,217,.1), transparent);
  transition:left .6s ease;
}
.card:hover{
  border-color:rgba(122,162,255,.4);
  box-shadow:0 16px 48px rgba(122,162,255,.15);
  transform:translateY(-8px);
  background:linear-gradient(135deg, 
    rgba(15,22,40,.95) 0%, 
    rgba(15,22,40,.7) 50%, 
    rgba(126,240,217,.1) 100%);
}
.card:hover::before{left:100%}
@media(min-width:768px){
  .card.span6{grid-column:span 6}
  .card.span4{grid-column:span 4}
}
.card h3{
  margin:0 0 12px;font-size:20px;
  background:linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  font-weight:700;
}
.card p{margin:0 0 10px;color:var(--muted);line-height:1.7}
.list{
  margin:10px 0 0;padding-left:18px;
  color:var(--muted);line-height:1.9;
  animation:fadeInUp .8s ease .3s backwards;
}
.list li{
  transition:all .3s ease;
  position:relative;
  padding-left:8px;
  margin-bottom:6px;
}
.list li:hover{
  color:var(--accent);
  transform:translateX(5px);
}
.list li::before{
  content:'→';
  position:absolute;left:0;
  opacity:0;transition:opacity .3s ease;
  color:var(--accent);
}
.list li:hover::before{opacity:1}
.list a{color:var(--accent);font-weight:500}
.list a:hover{color:var(--accent2)}
.cta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:14px}
.btn{
  display:inline-block;
  background:linear-gradient(135deg, var(--accent), var(--accent2));
  color:#0a0e18;
  font-weight:700;
  padding:12px 24px;
  border-radius:12px;
  border:none;
  cursor:pointer;
  transition:all .3s ease;
  position:relative;
  overflow:hidden;
  box-shadow:0 8px 24px rgba(122,162,255,.3);
  font-size:14px;
  animation:scaleIn .5s ease backwards;
}
.btn::before{
  content:'';
  position:absolute;top:0;left:-100%;width:100%;height:100%;
  background:linear-gradient(90deg, transparent, rgba(255,255,255,.2), transparent);
  transition:left .6s ease;
}
.btn:hover{
  text-decoration:none;
  filter:brightness(1.1);
  transform:translateY(-2px) scale(1.02);
  box-shadow:0 12px 32px rgba(122,162,255,.4);
  animation:heartBeat .5s ease;
}
.btn:hover::before{left:100%}
.btn:active{transform:translateY(0) scale(0.98)}
.btn2{
  display:inline-block;
  border:1px solid var(--accent);
  color:var(--text);
  padding:12px 24px;
  border-radius:12px;
  background:linear-gradient(135deg, rgba(122,162,255,.1), rgba(126,240,217,.05));
  transition:all .3s ease;
  font-weight:500;
  cursor:pointer;
  font-size:14px;
}
.btn2:hover{
  text-decoration:none;
  border-color:var(--accent2);
  background:linear-gradient(135deg, rgba(122,162,255,.2), rgba(126,240,217,.1));
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(122,162,255,.2);
}
.btn2:active{transform:translateY(0)}
.footer{
  border-top:1px solid var(--line);
  margin-top:auto;
  padding:24px 16px;
  color:var(--muted);
  font-size:12px;
  line-height:1.8;
  background:linear-gradient(180deg, transparent, rgba(122,162,255,.03));
  width:100%;
}
.footer a{transition:all .3s ease}
.footer a:hover{color:var(--accent2)}
.small{font-size:12px;color:var(--muted);line-height:1.8}
.sep{
  height:1px;
  background:linear-gradient(90deg, transparent, var(--line), transparent);
  margin:18px 0;
}

/* 动画效果 */
@keyframes fadeInDown{
  from{
    opacity:0;
    transform:translateY(-20px);
  }
  to{
    opacity:1;
    transform:translateY(0);
  }
}

@keyframes fadeInUp{
  from{
    opacity:0;
    transform:translateY(20px);
  }
  to{
    opacity:1;
    transform:translateY(0);
  }
}

@keyframes slideInLeft{
  from{
    opacity:0;
    transform:translateX(-20px);
  }
  to{
    opacity:1;
    transform:translateX(0);
  }
}

@keyframes pulse{
  0%{opacity:1}
  50%{opacity:.7}
  100%{opacity:1}
}

@keyframes glow{
  0%{box-shadow:0 0 10px rgba(122,162,255,.2)}
  50%{box-shadow:0 0 20px rgba(122,162,255,.4)}
  100%{box-shadow:0 0 10px rgba(122,162,255,.2)}
}

@keyframes float{
  0%, 100%{transform:translateY(0px) translateX(0px)}
  25%{transform:translateY(-10px) translateX(5px)}
  50%{transform:translateY(-20px) translateX(-5px)}
  75%{transform:translateY(-10px) translateX(5px)}
}

@keyframes bounce{
  0%, 100%{transform:translateY(0)}
  50%{transform:translateY(-20px)}
}

@keyframes shimmerText{
  0%{background-position:-200% center}
  100%{background-position:200% center}
}

@keyframes rotateBg{
  0%{transform:rotate(0deg)}
  100%{transform:rotate(360deg)}
}

@keyframes scaleIn{
  0%{opacity:0;transform:scale(0.9)}
  100%{opacity:1;transform:scale(1)}
}

@keyframes slideInRight{
  0%{opacity:0;transform:translateX(20px)}
  100%{opacity:1;transform:translateX(0)}
}

@keyframes slideInUp{
  0%{opacity:0;transform:translateY(20px)}
  100%{opacity:1;transform:translateY(0)}
}

@keyframes heartBeat{
  0%,100%{transform:scale(1)}
  25%{transform:scale(1.1)}
  50%{transform:scale(1)}
}

@keyframes blink{
  0%, 100%{opacity:1}
  50%{opacity:0.5}
}

@keyframes colorShift{
  0%{color:var(--accent)}
  50%{color:var(--accent2)}
  100%{color:var(--accent)}
}

@keyframes borderGlow{
  0%{border-color:rgba(122,162,255,.3)}
  50%{border-color:rgba(126,240,217,.6)}
  100%{border-color:rgba(122,162,255,.3)}
}

/* 移动端响应式设计 */
@media(max-width:640px){
  .container{padding:20px 14px}
  .header-inner{padding:10px 14px;gap:8px}
  .brand b{font-size:13px}
  .brand span{font-size:10px}
  .nav{gap:4px;font-size:11px}
  .nav a{padding:5px 8px;font-size:11px;border-radius:8px}
  .lang{gap:4px}
  .lang a{padding:4px 6px;font-size:10px}
  .hero{padding:40px 20px;margin-bottom:16px}
  .h1{font-size:32px;margin:0 0 8px}
  .h2{font-size:14px;margin:0 0 16px}
  .badges{gap:6px;margin:10px 0 14px}
  .badge{padding:5px 10px;font-size:10px}
  .grid{gap:14px;margin:24px 0}
  .card{padding:18px;border-radius:14px;grid-column:span 12 !important}
  .card h3{font-size:18px;margin:0 0 10px}
  .card p{font-size:14px;margin:0 0 8px}
  .list{padding-left:16px;line-height:1.8;font-size:14px}
  .list li{margin-bottom:4px;padding-left:6px}
  .cta{gap:8px;margin-top:12px}
  .btn,.btn2{padding:10px 16px;font-size:13px}
  .footer{padding:20px 14px;font-size:11px;line-height:1.6;margin-top:40px}
  .small{font-size:11px}
}

@media(max-width:480px){
  .container{padding:16px 12px}
  .header-inner{padding:8px 12px}
  .brand b{font-size:12px}
  .brand span{font-size:9px}
  .nav{gap:3px;font-size:10px}
  .nav a{padding:4px 6px;font-size:10px}
  .lang{gap:3px}
  .lang a{padding:3px 5px;font-size:9px}
  .hero{padding:32px 16px;margin-bottom:14px}
  .h1{font-size:26px;margin:0 0 6px}
  .h2{font-size:13px;margin:0 0 12px;line-height:1.6}
  .badges{gap:5px;margin:8px 0 12px}
  .badge{padding:4px 8px;font-size:9px}
  .grid{gap:12px;margin:20px 0}
  .card{padding:16px;border-radius:12px}
  .card h3{font-size:16px;margin:0 0 8px}
  .card p{font-size:13px;margin:0 0 6px}
  .list{padding-left:14px;line-height:1.7;font-size:13px}
  .list li{margin-bottom:3px;padding-left:5px}
  .cta{gap:6px;margin-top:10px}
  .btn,.btn2{padding:9px 14px;font-size:12px}
  .footer{padding:16px 12px;font-size:10px;line-height:1.5;margin-top:32px}
  .small{font-size:10px}
}

/* 平板设备优化 */
@media(min-width:641px) and (max-width:1024px){
  .container{padding:24px 16px}
  .nav a{font-size:12px;padding:7px 12px}
  .hero{padding:45px 28px}
  .h1{font-size:38px}
  .card{padding:22px}
  .card h3{font-size:18px}
}

/* 触摸设备优化 */
@media(hover:none) and (pointer:coarse){
  .card{transform:none}
  .card:active{
    border-color:rgba(122,162,255,.4);
    background:linear-gradient(135deg, 
      rgba(15,22,40,.95) 0%, 
      rgba(15,22,40,.7) 50%, 
      rgba(126,240,217,.1) 100%);
  }
  .btn:active{transform:scale(0.98)}
  .btn2:active{transform:scale(0.98)}
  .list li:active{color:var(--accent)}
}

/* 深色模式支持 */
@media(prefers-color-scheme:dark){
  html,body{
    background:linear-gradient(135deg, #0a0e18 0%, #0d1628 100%);
  }
}

/* 减速动画偏好 */
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
}

/* 高对比度模式 */
@media(prefers-contrast:more){
  .nav a{border-width:2px}
  .card{border-width:2px}
  .badge{border-width:2px}
}

/* 高级动画和过渡效果 */
.card {
  will-change:transform,box-shadow;
}

.btn, .btn2 {
  will-change:transform,box-shadow,background;
}

/* 自定义滚动条 */
::-webkit-scrollbar{
  width:10px;
  height:10px;
}

::-webkit-scrollbar-track{
  background:transparent;
}

::-webkit-scrollbar-thumb{
  background:linear-gradient(180deg, rgba(122,162,255,.3), rgba(126,240,217,.3));
  border-radius:10px;
  border:2px solid transparent;
  background-clip:padding-box;
}

::-webkit-scrollbar-thumb:hover{
  background:linear-gradient(180deg, rgba(122,162,255,.5), rgba(126,240,217,.5));
  background-clip:padding-box;
}

/* Firefox 滚动条 */
* {
  scrollbar-color:rgba(122,162,255,.3) transparent;
  scrollbar-width:thin;
}

/* 选中文本样式 */
::selection{
  background:linear-gradient(135deg, rgba(122,162,255,.3), rgba(126,240,217,.3));
  color:var(--text);
}

/* 占位符样式 */
::placeholder{
  color:var(--muted);
  opacity:0.7;
}

/* 焦点样式改进 */
:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  border-radius:4px;
}

/* 链接焦点样式 */
a:focus-visible{
  outline:2px dashed var(--accent);
  outline-offset:4px;
  border-radius:6px;
}

/* 输入框焦点样式 */
input:focus-visible, 
textarea:focus-visible, 
select:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:1px;
}

/* 更平滑的过渡 */
@supports (backdrop-filter: blur(1px)) {
  .header {
    backdrop-filter: blur(14px);
  }
}

/* 光线效果 */
@keyframes shimmer {
  0% {
    background-position:-200% 0;
  }
  100% {
    background-position:200% 0;
  }
}

/* 脉冲动画增强 */
@keyframes subtlePulse {
  0%, 100% {
    opacity:1;
    transform:scale(1);
  }
  50% {
    opacity:0.95;
    transform:scale(1.01);
  }
}

/* 悬停动画增强 */
.card {
  transition:all .4s cubic-bezier(.34,.1,.68,.55);
}

/* 平滑渐变背景 */
body::before {
  content:'';
  position:fixed;
  top:0;
  left:0;
  right:0;
  bottom:0;
  background:radial-gradient(ellipse at 20% 50%, rgba(122,162,255,.05) 0%, transparent 50%),
             radial-gradient(ellipse at 80% 80%, rgba(126,240,217,.05) 0%, transparent 50%);
  min-height: 100svh;
  z-index:-1;
}

/* 更好的卡片阴影 */
.card {
  box-shadow:
    0 2px 8px rgba(0,0,0,.1),
    0 8px 32px rgba(122,162,255,.1),
    inset 1px 1px 0 rgba(255,255,255,.05);
}

.card:hover {
  box-shadow:
    0 8px 32px rgba(122,162,255,.2),
    0 32px 64px rgba(122,162,255,.15),
    inset 1px 1px 0 rgba(255,255,255,.1);
}

/* 按钮增强阴影 */
.btn {
  box-shadow:
    0 4px 16px rgba(122,162,255,.3),
    inset 0 1px 0 rgba(255,255,255,.1),
    inset 0 -3px 8px rgba(0,0,0,.2);
}

.btn:hover {
  box-shadow:
    0 8px 24px rgba(122,162,255,.4),
    0 16px 48px rgba(122,162,255,.2),
    inset 0 1px 0 rgba(255,255,255,.1),
    inset 0 -3px 8px rgba(0,0,0,.2);
}

/* 超小屏幕额外优化 */
@media(max-width:360px){
  .container{padding:14px 10px}
  .header-inner{padding:8px 10px}
  .brand b{font-size:11px}
  .h1{font-size:24px}
  .h2{font-size:12px}
  .card{padding:14px}
  .btn,.btn2{padding:8px 12px;font-size:11px}
}

/* 大屏幕进一步优化 */
@media(min-width:1440px){
  .container{padding:48px 28px}
  .h1{font-size:56px}
  .card{padding:32px;gap:24px}
}

/* 增强触摸设备的可用性 */
@media(hover:none){
  .nav a{
    min-height:44px;
    display:flex;
    align-items:center;
  }
  .btn, .btn2{
    min-height:48px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
  }
}

/* 横屏优化 */
@media(max-height:500px) and (orientation:landscape){
  .hero{padding:20px 24px}
  .h1{font-size:28px;margin-bottom:6px}
  .h2{font-size:13px;margin-bottom:10px}
  .container{padding:16px}
}

/* 打印样式 */
@media print{
  .header{display:none}
  .footer{border-top:1px solid #ddd;padding:10px 0}
  .card{box-shadow:none;border:1px solid #ddd}
  .btn, .btn2{border:1px solid #000;color:#000;background:none}
}

/* 性能优化 - 减少重绘 */
.list li{
  backface-visibility:hidden;
  perspective:1000px;
}

/* 图片懒加载准备 */
img{
  max-width:100%;
  height:auto;
}

/* 代码块优化 */
code, pre{
  font-family:'Courier New', monospace;
  background:rgba(122,162,255,.1);
  padding:2px 6px;
  border-radius:4px;
  font-size:14px;
}

/* 表格优化 */
table{
  width:100%;
  border-collapse:collapse;
  margin:16px 0;
}

table th, table td{
  padding:12px;
  text-align:left;
  border-bottom:1px solid var(--line);
}

table th{
  background:linear-gradient(135deg, rgba(122,162,255,.1), rgba(126,240,217,.05));
  font-weight:600;
}

table tr:hover{
  background:rgba(122,162,255,.05);
}

/* 动画性能优化 */
@supports (animation-timeline: view()) {
  .card {
    animation-timeline: view();
    animation-range: entry 0% cover 40%;
  }
}

/* 特殊字体处理 */
@font-face{
  font-family:'System';
  src:local('-apple-system'), local('BlinkMacSystemFont'), local('Segoe UI'), local('Helvetica Neue');
  font-weight:400;
  font-style:normal;
}

/* 深链接样式 */
a[href^='#']{
  border-bottom:2px dotted var(--accent);
}

/* 确保最小触摸目标 */
button, a.btn, a.btn2{
  min-width:44px;
  min-height:44px;
  padding:12px 24px;
}

/* 改进的列表样式 */
li{
  margin-bottom:8px;
}

/* 卡片内容间距 */
.card > *:last-child{
  margin-bottom:0;
}

/* 响应式网格与移动优化 */
@media(max-width:640px){
  .grid{gap:12px}
  .hero-bg{opacity:0.25!important;}

  /* 让主体容器成为列布局，使页脚可在容器内部自动推到底部 */
  .container{display:flex;flex-direction:column}
  .container > .grid{flex:1}

  /* 小屏幕时导航改为单行可横向滑动，防止多行折叠（适用于所有语言） */
  .nav{flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:8px}
  .nav a{flex:0 0 auto;white-space:nowrap}

  /* 移动端品牌区域调整 */
  .brand{flex-basis:100%}
  .brand-icon{width:44px !important;height:44px !important;border-radius:12px;image-rendering:-webkit-optimize-contrast !important;image-rendering:crisp-edges !important}
  .brand-text .brand-name{font-size:14px}

  /* 放大手机端的语言切换按钮，增加触控目标 */
  .lang a{padding:8px 10px;font-size:14px}
}

/* 超小屏幕SVG与微调 */
@media(max-width:480px){
  .hero-bg{opacity:0.15!important}
  .brand b{font-size:16px}
  .h1{font-size:22px}
  .lang a{padding:7px 9px;font-size:13px}
}

/* 确保页脚每项单独一行，避免拥挤 */
.footer > div{display:block;width:100%;margin-bottom:6px}
.footer > div:last-child{margin-bottom:0}

@media(min-width:641px) and (max-width:1024px){
  .grid{gap:20px}
}

@media(min-width:1025px){
  .grid{gap:24px}
}