:root {
  --bg: #0a0c14;
  --line: rgba(255, 255, 255, 0.08);
  --text: #f0f4fc;
  --text-2: #a6b1ca;
  --text-3: #6b7796;
  --cyan: #2fd8f6;
  --pink: #dc4282;
  --amber: #fcba46;
  --violet: #8f6ad6;
  --grad: linear-gradient(100deg, var(--cyan) 0%, var(--violet) 46%, var(--pink) 72%, var(--amber) 100%);
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  background-color: var(--bg);
  background-image:
    radial-gradient(48% 38% at 14% 6%, rgba(47, 216, 246, 0.17) 0%, rgba(47, 216, 246, 0) 100%),
    radial-gradient(50% 44% at 90% 94%, rgba(220, 66, 130, 0.18) 0%, rgba(220, 66, 130, 0) 100%),
    radial-gradient(38% 30% at 78% 12%, rgba(245, 108, 83, 0.12) 0%, rgba(245, 108, 83, 0) 100%),
    radial-gradient(70% 60% at 50% 52%, rgba(143, 106, 214, 0.10) 0%, rgba(143, 106, 214, 0) 100%),
    linear-gradient(180deg, #0a0c14 0%, #0d1122 58%, #090b12 100%);
  background-repeat: no-repeat;
}

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

img { border: 0; }

.page {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding: 0 22px;
}

/* ---------- 顶部导航（吸顶，不透明以免下方内容透出） ---------- */

.topbar {
  position: -webkit-sticky;
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 -22px;
  padding: 12px 22px;
  background-color: #0a0c14;
  border-bottom: 1px solid var(--line);
}

.topbrand {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
}

.topmark {
  display: block;
  width: 34px;
  height: 34px;
  -webkit-filter: drop-shadow(0 2px 7px rgba(47, 216, 246, 0.28));
  filter: drop-shadow(0 2px 7px rgba(47, 216, 246, 0.28));
}

.topname {
  margin-left: 10px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--text);
  line-height: 1.2;
}

.topname i {
  display: block;
  font-style: normal;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.28em;
  color: var(--text-3);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
}

.nav a {
  position: relative;
  margin-left: 20px;
  padding: 4px 0;
  font-size: 13.5px;
  letter-spacing: 0.05em;
  color: var(--text-2);
  white-space: nowrap;
  -webkit-transition: color 0.25s ease;
  transition: color 0.25s ease;
}

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

.nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  right: 50%;
  bottom: 0;
  height: 1px;
  background-image: var(--grad);
  -webkit-transition: left 0.3s ease, right 0.3s ease;
  transition: left 0.3s ease, right 0.3s ease;
}

.nav a:hover::after { left: 0; right: 0; }

.main {
  flex: 1 1 auto;
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 0 44px;
  text-align: center;
}

/* 首屏：倒计时独占一屏，下面的内容滚动才出现 */
.hero-wrap {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: calc(100vh - 72px);
}

.hero { position: relative; }

/* ---------- 主视觉：Logo + 光圈 ---------- */

.mark-wrap {
  position: relative;
  width: 188px;
  height: 188px;
  margin: 0 auto;
}

/* 光圈容器：以 Logo 中心为原点，各层用负 margin 定位 */
.halo {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 0;
  height: 0;
  pointer-events: none;
}

.halo i {
  position: absolute;
  display: block;
  border-radius: 50%;
}

/* 1) 中心柔光：只呼吸，不旋转 */
.halo .glow {
  left: -165px;
  top: -165px;
  width: 330px;
  height: 330px;
  background: radial-gradient(circle at 50% 50%,
    rgba(47, 216, 246, 0.26) 0%,
    rgba(143, 106, 214, 0.19) 32%,
    rgba(220, 66, 130, 0.13) 56%,
    rgba(10, 12, 20, 0) 72%);
  -webkit-filter: blur(18px);
  filter: blur(18px);
  -webkit-animation: breathe 7s ease-in-out infinite alternate;
  animation: breathe 7s ease-in-out infinite alternate;
}

/* 2) 静态细环：贴着 Logo 外沿，给一点轮廓感 */
.halo .ring {
  left: -101px;
  top: -101px;
  width: 202px;
  height: 202px;
  border: 1px solid rgba(255, 255, 255, 0.065);
  -webkit-box-shadow: 0 0 20px rgba(47, 216, 246, 0.07);
  box-shadow: 0 0 20px rgba(47, 216, 246, 0.07);
}

/* 3) 三段弧形光圈：不同半径、不同颜色、不同转速与方向 */
.arc {
  border-style: solid;
  border-width: 1.5px;
  border-color: transparent;
}

.arc-a {
  left: -108px;
  top: -108px;
  width: 216px;
  height: 216px;
  border-top-color: rgba(47, 216, 246, 0.92);
  border-right-color: rgba(47, 216, 246, 0.10);
  -webkit-filter: blur(0.5px) drop-shadow(0 0 6px rgba(47, 216, 246, 0.72));
  filter: blur(0.5px) drop-shadow(0 0 6px rgba(47, 216, 246, 0.72));
  -webkit-animation: spin 26s linear infinite;
  animation: spin 26s linear infinite;
}

.arc-b {
  left: -118px;
  top: -118px;
  width: 236px;
  height: 236px;
  border-bottom-color: rgba(252, 186, 70, 0.85);
  border-left-color: rgba(252, 186, 70, 0.10);
  -webkit-filter: blur(0.7px) drop-shadow(0 0 7px rgba(252, 186, 70, 0.6));
  filter: blur(0.7px) drop-shadow(0 0 7px rgba(252, 186, 70, 0.6));
  -webkit-animation: spin 36s linear infinite reverse;
  animation: spin 36s linear infinite reverse;
}

.arc-c {
  left: -127px;
  top: -127px;
  width: 254px;
  height: 254px;
  border-left-color: rgba(220, 66, 130, 0.78);
  border-top-color: rgba(143, 106, 214, 0.16);
  -webkit-filter: blur(0.7px) drop-shadow(0 0 7px rgba(220, 66, 130, 0.55));
  filter: blur(0.7px) drop-shadow(0 0 7px rgba(220, 66, 130, 0.55));
  -webkit-animation: spin 31s linear infinite;
  animation: spin 31s linear infinite;
}

/* Logo 本体：两层错开的投影，让炫光"透"出来 */
.mark {
  position: relative;
  display: block;
  width: 188px;
  height: 188px;
  margin: 0 auto;
  -webkit-filter: drop-shadow(0 6px 14px rgba(47, 216, 246, 0.26)) drop-shadow(0 12px 34px rgba(220, 66, 130, 0.22));
  filter: drop-shadow(0 6px 14px rgba(47, 216, 246, 0.26)) drop-shadow(0 12px 34px rgba(220, 66, 130, 0.22));
  -webkit-animation: rise 0.9s ease both;
  animation: rise 0.9s ease both;
}

/* ---------- 文案 ---------- */

.brand {
  position: relative;
  width: -webkit-max-content;
  width: max-content;
  max-width: 100%;
  margin: 46px auto 0;
  font-size: 42px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-indent: 0.2em;
  line-height: 1.2;
  -webkit-animation: rise 0.9s 0.08s ease both;
  animation: rise 0.9s 0.08s ease both;
}

.lead {
  position: relative;
  margin: 30px 0 0;
  font-size: 16.5px;
  letter-spacing: 0.14em;
  text-indent: 0.14em;
  color: var(--text-2);
  -webkit-animation: rise 0.9s 0.3s ease both;
  animation: rise 0.9s 0.3s ease both;
}


.grad-text { color: #e9eefb; }

@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .grad-text {
    background-image: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
}

/* ---------- 分隔条 ---------- */

.divider {
  width: 54px;
  height: 2px;
  margin: 34px auto 0;
  border-radius: 2px;
  background-image: var(--grad);
  opacity: 0.9;
}

/* ---------- 倒计时 ---------- */

.timer {
  display: flex;
  align-items: stretch;
  justify-content: center;
  margin: 32px 0 0;
}

.timer-unit {
  min-width: 88px;
  margin: 0 6px;
  padding: 16px 8px 13px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 16px;
  background-color: rgba(255, 255, 255, 0.022);
  background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.055) 0%, rgba(255, 255, 255, 0.012) 58%, rgba(255, 255, 255, 0) 100%);
  -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.07), 0 8px 22px rgba(0, 0, 0, 0.3);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.07), 0 8px 22px rgba(0, 0, 0, 0.3);
}

.timer-unit b {
  display: block;
  font-size: 36px;
  font-weight: 600;
  line-height: 1.06;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

.timer-unit span {
  display: block;
  margin-top: 8px;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-indent: 0.2em;
  color: var(--text-3);
}

/* ---------- 向下滚动提示 ---------- */

.scroll-hint {
  position: relative;
  width: 22px;
  height: 34px;
  margin: 46px auto 0;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 12px;
}

.scroll-hint i {
  position: absolute;
  left: 50%;
  top: 8px;
  display: block;
  width: 3px;
  height: 7px;
  margin-left: -1.5px;
  border-radius: 2px;
  background-image: var(--grad);
  -webkit-animation: hintmove 1.9s ease-in-out infinite;
  animation: hintmove 1.9s ease-in-out infinite;
}

/* ---------- 内容板块 ---------- */

.block {
  padding: 76px 0 2px;
  scroll-margin-top: 76px;
}

.block-title {
  margin: 0;
  font-size: 25px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-indent: 0.1em;
  line-height: 1.35;
}

.block-sub {
  margin: 12px auto 0;
  max-width: 640px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-2);
}

/* 条目网格：不用 gap，负 margin 方案对老内核更稳 */
.cards {
  display: flex;
  flex-wrap: wrap;
  margin: 34px -7px 0;
  padding: 0;
  list-style: none;
}

.card {
  position: relative;
  flex: 1 1 calc(50% - 14px);
  margin: 0 7px 16px;
  padding: 22px 22px 24px;
  overflow: hidden;
  text-align: left;
  scroll-margin-top: 96px;
  border: 1px solid rgba(255, 255, 255, 0.075);
  border-radius: 16px;
  background-color: rgba(255, 255, 255, 0.02);
  background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.008) 62%, rgba(255, 255, 255, 0) 100%);
  -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.055), 0 10px 26px rgba(0, 0, 0, 0.26);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.055), 0 10px 26px rgba(0, 0, 0, 0.26);
}

.card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 2px;
  background-image: var(--grad);
  opacity: 0.5;
}

.card h3 {
  margin: 0;
  font-size: 16.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text);
}

.card p {
  margin: 9px 0 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--text-2);
}

/* 三列布局：工具区正好三张卡，不留下半张空位 */
.cards-3 .card { flex: 1 1 calc(33.333% - 14px); }

/* 文件信息行（格式 · 体积） */
.card-file {
  display: block;
  margin-top: 14px;
  font-size: 12px;
  letter-spacing: 0.09em;
  color: var(--text-3);
}

.card-file i {
  font-style: normal;
  padding: 1px 6px;
  margin-right: 8px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 4px;
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--text-2);
}

/* 次级小标题：用于资源页区块，避免和页头大标题撞脸 */
.sub-title {
  position: relative;
  display: inline-block;
  margin: 0 0 4px;
  padding-bottom: 10px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-indent: 0.12em;
  color: var(--text);
}

.sub-title::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 34px;
  height: 2px;
  margin-left: -17px;
  border-radius: 2px;
  background-image: var(--grad);
  opacity: 0.85;
}

/* ---------- 使用须知（资源页 / 首页工具区共用） ---------- */

.notice {
  margin: 28px 0 0;
  padding: 18px 22px 20px;
  text-align: left;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 16px;
  background-color: rgba(255, 255, 255, 0.022);
  background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.045) 0%, rgba(255, 255, 255, 0.006) 70%, rgba(255, 255, 255, 0) 100%);
}

.notice b {
  display: block;
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-indent: 0.12em;
  color: var(--text);
}

.notice p {
  margin: 0;
  font-size: 13px;
  line-height: 1.9;
  color: var(--text-2);
}

.notice p + p { margin-top: 8px; }

/* 警告句：琥珀色单独提出来，别让人漏看 */
.notice-warn {
  padding-top: 8px;
  border-top: 1px dashed rgba(252, 186, 70, 0.22);
  color: var(--amber) !important;
}

/* ---------- 资源下载页页头 ---------- */

.pagehead {
  padding: 68px 0 2px;
  scroll-margin-top: 76px;
}

.pagehead h1 {
  margin: 0;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-indent: 0.12em;
  line-height: 1.35;
}

.pagehead .block-sub {
  margin-top: 14px;
}

/* 小标签：板块前的分类提示 */
.tagline {
  display: inline-block;
  margin: 0 0 14px;
  padding: 3px 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-indent: 0.16em;
  color: var(--text-3);
}

/* 可点击的工具卡：悬浮抬起 + 提亮，给明确的可点反馈 */
.card-link {
  display: block;
  -webkit-transition: -webkit-transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
  transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
}

.card-link:hover {
  border-color: rgba(255, 255, 255, 0.17);
  -webkit-transform: translateY(-3px);
  transform: translateY(-3px);
  -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 16px 34px rgba(0, 0, 0, 0.38);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 16px 34px rgba(0, 0, 0, 0.38);
}

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

.card-link:active {
  -webkit-transform: translateY(-1px);
  transform: translateY(-1px);
}

/* 从首页点某张表跳过来时，用 :target 让那张卡自己亮一下 —— 纯 CSS，无需脚本 */
.card:target {
  border-color: rgba(47, 216, 246, 0.55);
  -webkit-animation: cardland 2.4s ease-out both;
  animation: cardland 2.4s ease-out both;
}

.card:target::before { opacity: 1; }

@-webkit-keyframes cardland {
  0% {
    -webkit-box-shadow: 0 0 0 3px rgba(47, 216, 246, 0.28), 0 14px 34px rgba(0, 0, 0, 0.4);
    box-shadow: 0 0 0 3px rgba(47, 216, 246, 0.28), 0 14px 34px rgba(0, 0, 0, 0.4);
  }
  70% {
    -webkit-box-shadow: 0 0 0 3px rgba(47, 216, 246, 0.16), 0 14px 34px rgba(0, 0, 0, 0.4);
    box-shadow: 0 0 0 3px rgba(47, 216, 246, 0.16), 0 14px 34px rgba(0, 0, 0, 0.4);
  }
  100% {
    -webkit-box-shadow: 0 0 0 3px rgba(47, 216, 246, 0), inset 0 1px 0 rgba(255, 255, 255, 0.055), 0 10px 26px rgba(0, 0, 0, 0.26);
    box-shadow: 0 0 0 3px rgba(47, 216, 246, 0), inset 0 1px 0 rgba(255, 255, 255, 0.055), 0 10px 26px rgba(0, 0, 0, 0.26);
  }
}
@keyframes cardland {
  0% {
    box-shadow: 0 0 0 3px rgba(47, 216, 246, 0.28), 0 14px 34px rgba(0, 0, 0, 0.4);
  }
  70% {
    box-shadow: 0 0 0 3px rgba(47, 216, 246, 0.16), 0 14px 34px rgba(0, 0, 0, 0.4);
  }
  100% {
    box-shadow: 0 0 0 3px rgba(47, 216, 246, 0), inset 0 1px 0 rgba(255, 255, 255, 0.055), 0 10px 26px rgba(0, 0, 0, 0.26);
  }
}

/* ---------- 关于我们 ---------- */

.about-text {
  margin: 26px auto 0;
  max-width: 700px;
  font-size: 15px;
  line-height: 1.95;
  text-align: left;
  color: var(--text-2);
}

.facts {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin: 30px -8px 0;
  padding: 0;
  list-style: none;
}

.fact {
  flex: 1 1 200px;
  max-width: 240px;
  margin: 0 8px 14px;
  padding: 15px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background-color: rgba(255, 255, 255, 0.018);
}

.fact b {
  display: block;
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-indent: 0.16em;
  color: var(--text-3);
}

.fact span {
  display: block;
  margin-top: 5px;
  font-size: 15px;
  letter-spacing: 0.03em;
  color: var(--text);
}

/* ---------- 页脚 ---------- */

.footer {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 30px 0 34px;
  border-top: 1px solid var(--line);
  text-align: center;
  font-size: 12px;
  line-height: 2;
  color: var(--text-3);
}

/* 资源页：页脚上方的联系方式行 */
.footer-contact {
  margin: 0 0 4px;
  letter-spacing: 0.06em;
}

.footer-contact a {
  color: var(--text-2);
  padding: 0 2px;
  white-space: nowrap;
}

.footer-contact a:hover { color: var(--cyan); }

.footer-copy { color: var(--text-3); }

.footer-copy b {
  font-weight: 600;
  color: var(--text-2);
  letter-spacing: 0.06em;
}

.footer-beian a {
  color: var(--text-3);
  padding: 0 2px;
  white-space: nowrap;
}

.footer-beian a:hover { color: var(--text-2); }

.footer-beian img {
  display: inline-block;
  width: 14px;
  height: 14px;
  margin-right: 4px;
  vertical-align: -2px;
}

.footer-beian span {
  margin: 0 5px;
  opacity: 0.5;
}

/* ---------- 动效 ---------- */

@-webkit-keyframes spin { to { -webkit-transform: rotate(360deg); } }
@keyframes spin { to { transform: rotate(360deg); } }

@-webkit-keyframes rise {
  from { opacity: 0; -webkit-transform: translateY(14px); }
  to { opacity: 1; -webkit-transform: translateY(0); }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

@-webkit-keyframes breathe { from { opacity: 0.72; } to { opacity: 1; } }
@keyframes breathe { from { opacity: 0.72; } to { opacity: 1; } }

@-webkit-keyframes hintmove {
  0%, 100% { opacity: 0.25; -webkit-transform: translateY(0); }
  50% { opacity: 1; -webkit-transform: translateY(9px); }
}
@keyframes hintmove {
  0%, 100% { opacity: 0.25; transform: translateY(0); }
  50% { opacity: 1; transform: translateY(9px); }
}

/* 三列在窄屏回落到两列 */
@media (max-width: 900px) {
  .cards-3 .card { flex: 1 1 calc(50% - 14px); }
}

/* ---------- 小屏 ---------- */

@media (max-width: 600px) {
  .page { padding: 0 18px; }
  .topbar { flex-wrap: wrap; justify-content: center; margin: 0 -18px; padding: 10px 18px; }
  .topmark { width: 30px; height: 30px; }
  .topname { margin-left: 9px; font-size: 14px; }
  .nav { width: 100%; justify-content: center; margin-top: 6px; }
  .nav a { margin: 0 9px; font-size: 12.5px; }
  .hero-wrap { min-height: calc(100vh - 104px); }
  .scroll-hint { margin-top: 34px; }
  .block { padding: 54px 0 0; }
  .block-title { font-size: 21px; }
  .block-sub { font-size: 13.5px; }
  .cards { margin: 24px -6px 0; }
  .card { flex: 1 1 100%; margin: 0 6px 12px; padding: 18px 18px 20px; border-radius: 14px; }
  .card h3 { font-size: 15.5px; }
  .card p { font-size: 13px; }
  .about-text { margin-top: 20px; font-size: 14px; }
  .fact { flex: 1 1 100%; max-width: none; }
  .main { padding: 56px 0 34px; }
  .mark-wrap { width: 148px; height: 148px; }
  .mark { width: 148px; height: 148px; }
  .halo .glow { left: -132px; top: -132px; width: 264px; height: 264px; }
  .halo .ring { left: -81px; top: -81px; width: 162px; height: 162px; }
  .arc-a { left: -87px; top: -87px; width: 174px; height: 174px; }
  .arc-b { left: -95px; top: -95px; width: 190px; height: 190px; }
  .arc-c { left: -102px; top: -102px; width: 204px; height: 204px; }
  .brand { margin-top: 40px; font-size: 32px; }
  .lead { margin-top: 22px; font-size: 15px; }
  .divider { margin-top: 26px; }
  .timer { margin-top: 26px; }
  .timer-unit { min-width: 70px; margin: 0 4px; padding: 13px 5px 10px; border-radius: 13px; }
  .timer-unit b { font-size: 26px; }
  .timer-unit span { margin-top: 6px; font-size: 10.5px; }
  /* 页脚通栏（放宽两侧 18px 内边距）＋收紧内距：让两条备案号在手机上也能并排 */
  .footer { width: auto; padding: 24px 0 28px; margin-left: -18px; margin-right: -18px; }
  .footer-beian a { padding: 0; }
  .footer-beian span { margin: 0 3px; }
  .footer-beian img { width: 13px; height: 13px; margin-right: 3px; }
}

/* 极窄屏（≤365px）兜底：两条备案号各占一行，不留孤零零的分隔符 */
@media (max-width: 365px) {
  .footer-beian a { display: block; }
  .footer-beian span { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .arc-a, .arc-b, .arc-c { -webkit-animation: none; animation: none; }
  .halo .glow { -webkit-animation: none; animation: none; }
  .scroll-hint i { -webkit-animation: none; animation: none; }
  /* 跳转定位的高亮动画关掉，改为静态描边，仍然指得清是哪张卡 */
  .card:target {
    -webkit-animation: none;
    animation: none;
    border-color: rgba(47, 216, 246, 0.55);
  }
  .card-link, .nav a, .nav a::after, 
  .mark, .brand, .lead { -webkit-animation: none; animation: none; }
}