:root {
  --yy-bg: #0a0714;
  --yy-bg-soft: #120b24;
  --yy-surface: rgba(255, 255, 255, 0.06);
  --yy-surface-strong: rgba(255, 255, 255, 0.1);
  --yy-border: rgba(255, 255, 255, 0.12);
  --yy-text: #f2eefc;
  --yy-text-soft: #b9b0d6;
  --yy-text-dim: #8c84a8;
  --yy-primary: #8b5cf6;
  --yy-primary-deep: #5b21b6;
  --yy-accent: #22d3ee;
  --yy-accent-warm: #f472b6;
  --yy-glow: rgba(139, 92, 246, 0.45);
  --yy-radius-sm: 10px;
  --yy-radius: 18px;
  --yy-radius-lg: 28px;
  --yy-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  --yy-shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.3);
  --yy-max: 1120px;
  --yy-font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--yy-font);
  background-color: var(--yy-bg);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(139, 92, 246, 0.28), transparent 42%),
    radial-gradient(circle at 88% 4%, rgba(34, 211, 238, 0.18), transparent 40%),
    radial-gradient(circle at 50% 100%, rgba(244, 114, 182, 0.14), transparent 55%),
    linear-gradient(180deg, #0a0714 0%, #100a20 45%, #0a0714 100%);
  background-attachment: fixed;
  color: var(--yy-text);
  line-height: 1.75;
  font-size: 16px;
  letter-spacing: 0.01em;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 34px 34px;
  opacity: 0.55;
}

a {
  color: var(--yy-accent);
  text-decoration: none;
  transition: color 0.28s ease, opacity 0.28s ease;
}

a:hover,
a:focus-visible {
  color: #7de9ff;
}

a:focus-visible {
  outline: 2px solid var(--yy-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

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

ul,
ol {
  list-style-position: inside;
}

/* ============ 顶部导航 ============ */

header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 7, 20, 0.62);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--yy-border);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}

header nav {
  max-width: var(--yy-max);
  margin: 0 auto;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}

header nav > a {
  font-size: 1.06rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #fff;
  white-space: nowrap;
  padding: 6px 14px;
  border-radius: 999px;
  background: linear-gradient(120deg, rgba(139, 92, 246, 0.32), rgba(34, 211, 238, 0.22));
  border: 1px solid var(--yy-border);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

header nav > a:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px var(--yy-glow);
}

header nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-left: auto;
}

header nav ul li a {
  display: inline-block;
  padding: 7px 13px;
  font-size: 0.9rem;
  color: var(--yy-text-soft);
  border-radius: 999px;
  border: 1px solid transparent;
  transition: color 0.28s ease, background 0.28s ease, border-color 0.28s ease, transform 0.28s ease;
}

header nav ul li a:hover,
header nav ul li a:focus-visible {
  color: #fff;
  background: var(--yy-surface-strong);
  border-color: var(--yy-border);
  transform: translateY(-2px);
}

/* ============ 主体容器 ============ */

main {
  position: relative;
  z-index: 1;
  max-width: var(--yy-max);
  margin: 0 auto;
  padding: 0 22px 80px;
}

/* ============ 面包屑 ============ */

main > nav[aria-label="面包屑导航"] {
  margin: 22px 0 10px;
}

main > nav[aria-label="面包屑导航"] ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--yy-text-dim);
}

main > nav[aria-label="面包屑导航"] ol li {
  display: flex;
  align-items: center;
  gap: 8px;
}

main > nav[aria-label="面包屑导航"] ol li:not(:last-child)::after {
  content: "/";
  color: rgba(255, 255, 255, 0.25);
}

main > nav[aria-label="面包屑导航"] ol li a {
  color: var(--yy-text-soft);
}

main > nav[aria-label="面包屑导航"] ol li a:hover {
  color: var(--yy-accent);
}

/* ============ 渐变 Banner (h1 + 首段) ============ */

main > h1 {
  position: relative;
  margin: 18px 0 0;
  padding: 52px 40px 34px;
  font-size: clamp(1.5rem, 3.6vw, 2.5rem);
  line-height: 1.35;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #fff;
  border-radius: var(--yy-radius-lg);
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(139, 92, 246, 0.55) 0%, rgba(91, 33, 182, 0.42) 42%, rgba(34, 211, 238, 0.32) 100%),
    linear-gradient(200deg, #1a1033 0%, #0d0820 100%);
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: var(--yy-shadow);
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

main > h1::before {
  content: "";
  position: absolute;
  top: -60%;
  right: -18%;
  width: 62%;
  height: 220%;
  background: radial-gradient(circle, rgba(244, 114, 182, 0.4), transparent 65%);
  filter: blur(30px);
  pointer-events: none;
}

main > h1::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--yy-primary), var(--yy-accent), var(--yy-accent-warm));
  opacity: 0.9;
}

main > h1 + p {
  margin: 26px 0 0;
  padding: 26px 30px;
  font-size: 1.02rem;
  color: var(--yy-text-soft);
  border-radius: var(--yy-radius);
  background: var(--yy-surface);
  border: 1px solid var(--yy-border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--yy-shadow-soft);
}

/* ============ 通用 Section 卡片 ============ */

section {
  position: relative;
  margin-top: 34px;
  padding: 34px 32px;
  border-radius: var(--yy-radius-lg);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.07) 0%, rgba(255, 255, 255, 0.025) 100%);
  border: 1px solid var(--yy-border);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  box-shadow: var(--yy-shadow-soft);
  transition: transform 0.4s cubic-bezier(0.22, 0.68, 0.36, 1), box-shadow 0.4s ease, border-color 0.4s ease;
  animation: yy-rise 0.7s cubic-bezier(0.22, 0.68, 0.36, 1) both;
}

section::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(140deg, rgba(139, 92, 246, 0.5), transparent 40%, rgba(34, 211, 238, 0.35));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

section:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(139, 92, 246, 0.18);
}

section:hover::before {
  opacity: 1;
}

/* ============ 标题层级 ============ */

h2 {
  position: relative;
  margin-bottom: 20px;
  padding-left: 18px;
  font-size: clamp(1.22rem, 2.4vw, 1.62rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #fff;
  line-height: 1.4;
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.28em;
  width: 6px;
  height: 1.05em;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--yy-accent), var(--yy-primary));
  box-shadow: 0 0 16px var(--yy-glow);
}

h3 {
  margin: 24px 0 10px;
  font-size: 1.06rem;
  font-weight: 650;
  color: #e9e3ff;
  letter-spacing: 0.015em;
}

h3::before {
  content: "◆";
  margin-right: 8px;
  font-size: 0.72em;
  color: var(--yy-accent);
  vertical-align: 0.12em;
  opacity: 0.9;
}

p {
  margin: 12px 0;
  color: var(--yy-text-soft);
}

section > p:first-of-type {
  color: #d8d2ee;
}

/* ============ 列表 ============ */

section ul,
section ol {
  margin: 14px 0 14px 4px;
  padding-left: 6px;
  display: grid;
  gap: 8px;
}

section ul li,
section ol li {
  position: relative;
  padding: 9px 14px 9px 34px;
  font-size: 0.95rem;
  color: var(--yy-text-soft);
  border-radius: var(--yy-radius-sm);
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.06);
  list-style: none;
  transition: background 0.28s ease, transform 0.28s ease, border-color 0.28s ease, color 0.28s ease;
}

section ul li::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 50%;
  width: 8px;
  height: 8px;
  margin-top: -4px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--yy-accent), var(--yy-primary));
  box-shadow: 0 0 10px var(--yy-glow);
}

section ol {
  counter-reset: yy-ol;
}

section ol li {
  counter-increment: yy-ol;
}

section ol li::before {
  content: counter(yy-ol);
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: #fff;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--yy-primary), var(--yy-accent));
  box-shadow: 0 0 12px var(--yy-glow);
}

section ul li:hover,
section ol li:hover {
  background: rgba(139, 92, 246, 0.14);
  border-color: rgba(139, 92, 246, 0.34);
  color: #fff;
  transform: translateX(4px);
}

/* ============ 文章卡片 ============ */

#articles {
  display: grid;
  gap: 0;
}

#articles > h2 {
  grid-column: 1 / -1;
}

#articles article {
  position: relative;
  margin-top: 18px;
  padding: 22px 24px;
  border-radius: var(--yy-radius);
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--yy-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  overflow: hidden;
  transition: transform 0.35s cubic-bezier(0.22, 0.68, 0.36, 1), box-shadow 0.35s ease, border-color 0.35s ease;
}

#articles article::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--yy-primary), var(--yy-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s ease;
}

#articles article:hover {
  transform: translateY(-6px);
  border-color: rgba(139, 92, 246, 0.42);
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.48), 0 0 0 1px rgba(34, 211, 238, 0.14);
}

#articles article:hover::after {
  transform: scaleX(1);
}

#articles article h3 {
  margin-top: 0;
}

#articles article h3::before {
  content: "✦";
}

#articles article > p:nth-of-type(1) {
  font-size: 0.8rem;
  color: var(--yy-text-dim);
  letter-spacing: 0.04em;
}

#articles article > p:last-child {
  margin-bottom: 0;
}

#articles article > p:last-child a {
  display: inline-block;
  margin-top: 6px;
  padding: 7px 18px;
  font-size: 0.86rem;
  font-weight: 600;
  color: #fff;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--yy-primary), var(--yy-primary-deep));
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 6px 18px rgba(91, 33, 182, 0.4);
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}

#articles article > p:last-child a:hover {
  transform: translateY(-2px) scale(1.03);
  background: linear-gradient(120deg, var(--yy-accent), var(--yy-primary));
  box-shadow: 0 10px 26px rgba(34, 211, 238, 0.4);
}

/* ============ FAQ ============ */

#faq h3 {
  margin-top: 22px;
  padding: 12px 18px;
  font-size: 1rem;
  color: #fff;
  border-radius: var(--yy-radius-sm) var(--yy-radius-sm) 0 0;
  background: linear-gradient(100deg, rgba(139, 92, 246, 0.24), rgba(34, 211, 238, 0.12));
  border: 1px solid rgba(139, 92, 246, 0.28);
  border-bottom: none;
  transition: background 0.3s ease, color 0.3s ease;
}

#faq h3::before {
  content: "Q";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  margin-right: 10px;
  font-size: 0.74rem;
  font-weight: 800;
  color: #fff;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--yy-primary), var(--yy-accent-warm));
  vertical-align: 0.08em;
}

#faq h3 + p {
  margin-top: 0;
  padding: 14px 18px;
  font-size: 0.93rem;
  border-radius: 0 0 var(--yy-radius-sm) var(--yy-radius-sm);
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-top: none;
  transition: background 0.3s ease, border-color 0.3s ease;
}

#faq h3:hover,
#faq h3:hover + p {
  background: rgba(139, 92, 246, 0.16);
  border-color: rgba(139, 92, 246, 0.36);
}

/* ============ HowTo ============ */

#howto ol {
  counter-reset: yy-step;
}

#howto ol li {
  padding: 12px 16px 12px 44px;
  background: linear-gradient(100deg, rgba(34, 211, 238, 0.1), rgba(139, 92, 246, 0.08));
  border-color: rgba(34, 211, 238, 0.2);
}

#howto ol li::before {
  width: 24px;
  height: 24px;
  left: 12px;
  font-size: 0.78rem;
  background: linear-gradient(135deg, var(--yy-accent), var(--yy-primary));
}

#howto h3 {
  color: var(--yy-accent);
}

/* ============ 新闻中心 ============ */

#news ul li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-left: 16px;
  background: transparent;
  border: none;
  border-left: 2px solid rgba(139, 92, 246, 0.5);
  border-radius: 0;
}

#news ul li::before {
  display: none;
}

#news ul li:hover {
  background: rgba(139, 92, 246, 0.1);
  border-left-color: var(--yy-accent);
  transform: translateX(6px);
}

/* ============ 联系我们 ============ */

#contact p {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 8px 0;
  padding: 10px 16px;
  font-size: 0.94rem;
  border-radius: var(--yy-radius-sm);
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.07);
  transition: background 0.28s ease, transform 0.28s ease, border-color 0.28s ease;
}

#contact p:hover {
  background: rgba(34, 211, 238, 0.1);
  border-color: rgba(34, 211, 238, 0.3);
  transform: translateX(4px);
}

#contact p::first-line {
  color: #fff;
  font-weight: 600;
}

/* ============ 网站地图 / 友情链接 ============ */

#sitemap ul,
#links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

#sitemap ul li,
#links ul li {
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 0;
}

#sitemap ul li::before,
#links ul li::before {
  display: none;
}

#sitemap ul li a,
#links ul li a {
  display: inline-block;
  padding: 8px 18px;
  font-size: 0.88rem;
  color: var(--yy-text-soft);
  border-radius: 999px;
  background: var(--yy-surface);
  border: 1px solid var(--yy-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: color 0.28s ease, background 0.28s ease, transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}

#sitemap ul li a:hover,
#links ul li a:hover {
  color: #fff;
  background: linear-gradient(120deg, rgba(139, 92, 246, 0.5), rgba(34, 211, 238, 0.35));
  border-color: rgba(139, 92, 246, 0.5);
  transform: translateY(-3px);
  box-shadow: 0 10px 24px var(--yy-glow);
}

/* ============ 作者信息 ============ */

#author p {
  margin: 8px 0;
  font-size: 0.92rem;
}

#author p::first-line {
  color: #fff;
  font-weight: 600;
}

/* ============ 法律声明 ============ */

#legal h3 {
  margin-top: 22px;
  color: var(--yy-accent-warm);
}

#legal h3::before {
  content: "§";
}

/* ============ 页脚 ============ */

footer {
  position: relative;
  z-index: 1;
  margin-top: 20px;
  padding: 40px 22px 46px;
  text-align: center;
  border-top: 1px solid var(--yy-border);
  background: linear-gradient(180deg, rgba(10, 7, 20, 0.2), rgba(10, 7, 20, 0.85));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

footer p {
  margin: 6px 0;
  font-size: 0.86rem;
  color: var(--yy-text-dim);
}

footer a {
  display: inline-block;
  margin-top: 8px;
  padding: 8px 22px;
  font-size: 0.86rem;
  color: #fff;
  border-radius: 999px;
  background: linear-gradient(120deg, rgba(139, 92, 246, 0.5), rgba(34, 211, 238, 0.32));
  border: 1px solid rgba(255, 255, 255, 0.16);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

footer a:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px var(--yy-glow);
}

/* ============ 滚动动画 ============ */

@keyframes yy-rise {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes yy-fade {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@supports (animation-timeline: view()) {
  section {
    animation: yy-rise 0.7s cubic-bezier(0.22, 0.68, 0.36, 1) both;
    animation-timeline: view();
    animation-range: entry 0% cover 26%;
  }

  #articles article {
    animation: yy-rise 0.6s cubic-bezier(0.22, 0.68, 0.36, 1) both;
    animation-timeline: view();
    animation-range: entry 0% cover 30%;
  }
}

main > h1 {
  animation: yy-rise 0.8s cubic-bezier(0.22, 0.68, 0.36, 1) both;
}

main > h1 + p {
  animation: yy-fade 1s ease 0.15s both;
}

/* ============ 响应式 ============ */

@media (max-width: 900px) {
  header nav {
    padding: 12px 16px;
    gap: 12px;
  }

  header nav ul {
    width: 100%;
    margin-left: 0;
    gap: 4px;
  }

  header nav ul li a {
    padding: 6px 10px;
    font-size: 0.82rem;
  }

  main {
    padding: 0 16px 60px;
  }

  main > h1 {
    padding: 40px 24px 26px;
  }

  main > h1 + p {
    padding: 20px 20px;
    font-size: 0.96rem;
  }

  section {
    margin-top: 26px;
    padding: 26px 20px;
    border-radius: var(--yy-radius);
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15px;
    line-height: 1.72;
  }

  header nav > a {
    font-size: 0.96rem;
    padding: 5px 12px;
  }

  header nav ul li a {
    padding: 5px 9px;
    font-size: 0.78rem;
  }

  main > h1 {
    padding: 32px 18px 22px;
    border-radius: var(--yy-radius);
  }

  main > h1 + p {
    padding: 18px 16px;
    font-size: 0.92rem;
    border-radius: var(--yy-radius-sm);
  }

  section {
    margin-top: 20px;
    padding: 22px 16px;
  }

  h2 {
    padding-left: 14px;
    font-size: 1.16rem;
  }

  h3 {
    font-size: 1rem;
  }

  section ul li,
  section ol li {
    padding: 8px 12px 8px 30px;
    font-size: 0.9rem;
  }

  #articles article {
    padding: 18px 16px;
  }

  #faq h3 {
    padding: 10px 14px;
    font-size: 0.94rem;
  }

  #faq h3 + p {
    padding: 12px 14px;
    font-size: 0.88rem;
  }

  #contact p {
    padding: 8px 12px;
    font-size: 0.88rem;
  }

  footer {
    padding: 32px 16px 40px;
  }
}

/* ============ 浅色模式适配 ============ */

@media (prefers-color-scheme: light) {
  :root {
    --yy-bg: #f4f2fb;
    --yy-bg-soft: #ffffff;
    --yy-surface: rgba(255, 255, 255, 0.72);
    --yy-surface-strong: rgba(255, 255, 255, 0.9);
    --yy-border: rgba(60, 40, 110, 0.14);
    --yy-text: #1d1533;
    --yy-text-soft: #4a4166;
    --yy-text-dim: #6e6688;
    --yy-glow: rgba(139, 92, 246, 0.28);
    --yy-shadow: 0 18px 50px rgba(70, 50, 130, 0.16);
    --yy-shadow-soft: 0 10px 30px rgba(70, 50, 130, 0.1);
  }

  body {
    background-color: var(--yy-bg);
    background-image:
      radial-gradient(circle at 12% 8%, rgba(139, 92, 246, 0.16), transparent 42%),
      radial-gradient(circle at 88% 4%, rgba(34, 211, 238, 0.14), transparent 40%),
      radial-gradient(circle at 50% 100%, rgba(244, 114, 182, 0.1), transparent 55%),
      linear-gradient(180deg, #f7f5fd 0%, #efeafb 45%, #f7f5fd 100%);
  }

  body::before {
    background-image: radial-gradient(rgba(60, 40, 110, 0.06) 1px, transparent 1px);
  }

  header {
    background: rgba(255, 255, 255, 0.7);
    border-bottom-color: var(--yy-border);
    box-shadow: 0 8px 30px rgba(70, 50, 130, 0.08);
  }

  header nav > a {
    color: #fff;
  }

  header nav ul li a {
    color: var(--yy-text-soft);
  }

  header nav ul li a:hover,
  header nav ul li a:focus-visible {
    color: var(--yy-text);
    background: rgba(139, 92, 246, 0.12);
  }

  main > h1 {
    color: #fff;
    text-shadow: 0 2px 16px rgba(60, 30, 120, 0.35);
  }

  main > h1 + p {
    color: var(--yy-text-soft);
  }

  section {
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.85) 0%, rgba(255, 255, 255, 0.55) 100%);
    border-color: var(--yy-border);
  }

  section:hover {
    box-shadow: 0 24px 60px rgba(70, 50, 130, 0.18), 0 0 0 1px rgba(139, 92, 246, 0.16);
  }

  h2,
  h3 {
    color: var(--yy-text);
  }

  h3 {
    color: #2c2148;
  }

  section > p:first-of-type {
    color: #3a3055;
  }

  p {
    color: var(--yy-text-soft);
  }

  section ul li,
  section ol li {
    background: rgba(255, 255, 255, 0.7);
    border-color: rgba(60, 40, 110, 0.1);
    color: var(--yy-text-soft);
  }

  section ul li:hover,
  section ol li:hover {
    background: rgba(139, 92, 246, 0.12);
    color: var(--yy-text);
  }

  #articles article {
    background: linear-gradient(150deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.6));
    border-color: var(--yy-border);
  }

  #articles article:hover {
    box-shadow: 0 22px 48px rgba(70, 50, 130, 0.18), 0 0 0 1px rgba(34, 211, 238, 0.2);
  }

  #faq h3 {
    color: var(--yy-text);
    background: linear-gradient(100deg, rgba(139, 92, 246, 0.16), rgba(34, 211, 238, 0.1));
  }

  #faq h3 + p {
    background: rgba(255, 255, 255, 0.72);
    border-color: rgba(60, 40, 110, 0.1);
  }

  #faq h3:hover,
  #faq h3:hover + p {
    background: rgba(139, 92, 246, 0.12);
  }

  #howto ol li {
    background: linear-gradient(100deg, rgba(34, 211, 238, 0.12), rgba(139, 92, 246, 0.08));
    border-color: rgba(34, 211, 238, 0.24);
  }

  #news ul li {
    background: transparent;
    border-left-color: rgba(139, 92, 246, 0.4);
  }

  #news ul li:hover {
    background: rgba(139, 92, 246, 0.08);
  }

  #contact p {
    background: rgba(255, 255, 255, 0.7);
    border-color: rgba(60, 40, 110, 0.1);
  }

  #contact p:hover {
    background: rgba(34, 211, 238, 0.1);
  }

  #sitemap ul li a,
  #links ul li a {
    color: var(--yy-text-soft);
    background: rgba(255, 255, 255, 0.75);
  }

  #sitemap ul li a:hover,
  #links ul li a:hover {
    color: #fff;
  }

  footer {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.3), rgba(244, 242, 251, 0.95));
    border-top-color: var(--yy-border);
  }

  footer p {
    color: var(--yy-text-dim);
  }
}

/* ============ 无障碍与动效偏好 ============ */

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ============ 打印 ============ */

@media print {
  body {
    background: #fff;
    color: #000;
  }

  header,
  footer,
  main > nav[aria-label="面包屑导航"] {
    display: none;
  }

  section {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
    background: #fff;
    backdrop-filter: none;
  }

  a {
    color: #000;
    text-decoration: underline;
  }
}