@charset "UTF-8";

:root {
  --pink-50: #fff5f8;
  --pink-100: #ffe4ee;
  --pink-200: #ffd1e3;
  --pink-300: #ffb6c9;
  --pink-400: #ff8fb1;
  --pink-500: #ff6b9d;
  --pink-600: #f04e86;
  --pink-700: #d13a70;
  --purple-400: #b98cff;
  --purple-500: #9d6bff;
  --purple-600: #7f4fe0;
  --blue-400: #6bc5ff;
  --mint-400: #5fd6c4;
  --ink-900: #1c1420;
  --ink-800: #2a1f2f;
  --ink-700: #3a2c40;
  --ink-600: #55425c;
  --ink-500: #6f5a77;
  --ink-400: #8f7b96;
  --ink-300: #b6a6bb;
  --ink-200: #d9cddd;
  --ink-100: #efe7f1;
  --surface: #ffffff;
  --surface-soft: #fff8fb;
  --surface-glass: rgba(255, 255, 255, 0.72);
  --border-soft: rgba(255, 107, 157, 0.18);
  --shadow-sm: 0 2px 8px rgba(255, 107, 157, 0.08);
  --shadow-md: 0 10px 30px rgba(255, 107, 157, 0.14);
  --shadow-lg: 0 22px 60px rgba(255, 107, 157, 0.22);
  --gradient-hero: linear-gradient(135deg, #ff9ec4 0%, #ff6b9d 38%, #b98cff 100%);
  --gradient-soft: linear-gradient(135deg, #fff5f8 0%, #ffe9f3 45%, #f1e6ff 100%);
  --gradient-btn: linear-gradient(135deg, #ff8fb1 0%, #ff6b9d 50%, #b98cff 100%);
  --gradient-card: linear-gradient(160deg, rgba(255, 255, 255, 0.92), rgba(255, 245, 248, 0.78));
  --radius-xs: 8px;
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 26px;
  --radius-xl: 36px;
  --radius-pill: 999px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --header-height: 72px;
  --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.32s cubic-bezier(0.34, 1.32, 0.5, 1);
  --transition-slow: 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink-900: #f7eef9;
    --ink-800: #f0e3f4;
    --ink-700: #e2d2e8;
    --ink-600: #cbb6d3;
    --ink-500: #ab93b4;
    --ink-400: #8d7697;
    --ink-300: #6d5878;
    --ink-200: #4b3a55;
    --ink-100: #33243c;
    --surface: #1d1424;
    --surface-soft: #251a2e;
    --surface-glass: rgba(37, 26, 46, 0.72);
    --border-soft: rgba(255, 143, 177, 0.22);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 22px 60px rgba(0, 0, 0, 0.55);
    --gradient-soft: linear-gradient(135deg, #241a2d 0%, #2c1f38 45%, #1f1829 100%);
    --gradient-card: linear-gradient(160deg, rgba(45, 32, 56, 0.9), rgba(33, 24, 42, 0.78));
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-700);
  background-color: var(--surface-soft);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(255, 143, 177, 0.18), transparent 42%),
    radial-gradient(circle at 88% 12%, rgba(185, 140, 255, 0.16), transparent 46%),
    radial-gradient(circle at 50% 100%, rgba(107, 197, 255, 0.1), transparent 55%);
  background-attachment: fixed;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--pink-600);
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

a:hover,
a:focus-visible {
  color: var(--purple-500);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(157, 107, 255, 0.55);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.6em;
  line-height: 1.35;
  color: var(--ink-900);
  font-weight: 800;
  letter-spacing: 0.01em;
}

h1 { font-size: clamp(1.85rem, 4.6vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3.4vw, 2.2rem); }
h3 { font-size: clamp(1.15rem, 2.2vw, 1.5rem); }

p {
  margin: 0 0 1em;
  color: var(--ink-600);
}

ul, ol {
  margin: 0 0 1.2em;
  padding-left: 1.4em;
}

li {
  margin-bottom: 0.45em;
  color: var(--ink-600);
}

blockquote {
  margin: 0;
  padding: 0;
}

time {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--ink-400);
  letter-spacing: 0.04em;
}

/* ============ 滚动动画 ============ */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(34px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes floatSoft {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 107, 157, 0.4); }
  50% { box-shadow: 0 0 0 16px rgba(255, 107, 157, 0); }
}

@keyframes shimmer {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

main > section,
main > nav,
#site-footer,
#site-header {
  animation: fadeUp 0.7s var(--transition-slow) both;
}

main > section:nth-of-type(1) { animation-delay: 0.05s; }
main > section:nth-of-type(2) { animation-delay: 0.1s; }
main > section:nth-of-type(3) { animation-delay: 0.15s; }
main > section:nth-of-type(4) { animation-delay: 0.2s; }
main > section:nth-of-type(5) { animation-delay: 0.25s; }
main > section:nth-of-type(6) { animation-delay: 0.3s; }

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============ 头部导航 ============ */
#site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  background: var(--surface-glass);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 22px;
}

.logo {
  font-size: 1.4rem;
  font-weight: 900;
  letter-spacing: 0.02em;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  white-space: nowrap;
  transition: transform var(--transition-base), filter var(--transition-fast);
}

.logo:hover {
  transform: scale(1.06) rotate(-1.5deg);
  filter: drop-shadow(0 6px 14px rgba(255, 107, 157, 0.4));
}

#site-header nav {
  flex: 1 1 auto;
}

#site-header nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

#site-header nav li {
  margin: 0;
}

#site-header nav a {
  display: inline-block;
  padding: 7px 13px;
  border-radius: var(--radius-pill);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ink-600);
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-base);
}

#site-header nav a:hover,
#site-header nav a:focus-visible {
  color: var(--pink-600);
  background: rgba(255, 143, 177, 0.16);
  transform: translateY(-2px);
}

.site-search {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 0 1 320px;
  padding: 5px 6px 5px 14px;
  border-radius: var(--radius-pill);
  background: var(--surface);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), border-color var(--transition-fast);
}

.site-search:focus-within {
  border-color: var(--pink-400);
  box-shadow: 0 0 0 4px rgba(255, 143, 177, 0.22);
}

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

.site-search input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  font-family: inherit;
  font-size: 0.92rem;
  color: var(--ink-800);
  padding: 6px 0;
}

.site-search input::placeholder {
  color: var(--ink-300);
}

.site-search input:focus {
  outline: none;
}

.site-search button {
  flex: 0 0 auto;
  border: 0;
  cursor: pointer;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  color: #fff;
  background: var(--gradient-btn);
  background-size: 180% 180%;
  box-shadow: 0 6px 16px rgba(255, 107, 157, 0.32);
  transition: transform var(--transition-base), box-shadow var(--transition-base), background-position var(--transition-slow);
}

.site-search button:hover {
  transform: translateY(-2px) scale(1.03);
  background-position: 100% 50%;
  box-shadow: 0 10px 24px rgba(255, 107, 157, 0.42);
}

/* ============ 主内容容器 ============ */
main {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

/* 面包屑 */
main > nav[aria-label="面包屑导航"] {
  margin: 22px 0 6px;
}

main > nav[aria-label="面包屑导航"] ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.86rem;
}

main > nav[aria-label="面包屑导航"] li {
  margin: 0;
  color: var(--ink-400);
}

main > nav[aria-label="面包屑导航"] li + li::before {
  content: "›";
  margin-right: 10px;
  color: var(--ink-300);
}

main > nav[aria-label="面包屑导航"] li[aria-current="page"] {
  color: var(--pink-600);
  font-weight: 700;
}

/* ============ 通用 section 卡片 ============ */
main > section {
  position: relative;
  margin: 30px 0;
  padding: clamp(22px, 4vw, 46px);
  border-radius: var(--radius-xl);
  background: var(--gradient-card);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-slow), box-shadow var(--transition-slow), border-color var(--transition-base);
}

main > section:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(255, 143, 177, 0.34);
}

main > section h2 {
  position: relative;
  padding-bottom: 14px;
  margin-bottom: 26px;
}

main > section h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 72px;
  height: 5px;
  border-radius: var(--radius-pill);
  background: var(--gradient-btn);
  background-size: 200% 100%;
  animation: shimmer 4s linear infinite;
}

main > section h3 {
  margin-top: 1.6em;
  padding-left: 14px;
  border-left: 4px solid var(--pink-400);
  border-radius: 2px;
}

main > section h3:first-of-type {
  margin-top: 0.4em;
}

/* ============ Hero ============ */
#hero {
  margin-top: 18px;
  padding: clamp(30px, 6vw, 68px);
  border-radius: var(--radius-xl);
  background: var(--gradient-hero);
  background-size: 220% 220%;
  animation: fadeUp 0.8s var(--transition-slow) both, shimmer 14s ease infinite;
  color: #fff;
  border: 0;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

#hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 82% 18%, rgba(255, 255, 255, 0.32), transparent 42%),
    radial-gradient(circle at 8% 92%, rgba(255, 255, 255, 0.2), transparent 46%);
  pointer-events: none;
}

#hero:hover {
  transform: translateY(-4px) scale(1.004);
}

#hero h1 {
  position: relative;
  color: #fff;
  text-shadow: 0 4px 24px rgba(120, 40, 80, 0.28);
  max-width: 22ch;
}

#hero p {
  position: relative;
  color: rgba(255, 255, 255, 0.94);
  max-width: 62ch;
  font-size: clamp(0.98rem, 1.6vw, 1.1rem);
}

.hero-actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 26px 0 8px;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: var(--radius-pill);
  font-size: 0.98rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base), color var(--transition-base);
}

.btn-primary {
  color: var(--pink-600);
  background: #fff;
  box-shadow: 0 10px 26px rgba(120, 40, 80, 0.28);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  color: var(--purple-600);
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 16px 36px rgba(120, 40, 80, 0.36);
}

.btn-secondary {
  color: #fff;
  background: rgba(255, 255, 255, 0.16);
  border: 2px solid rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  color: var(--pink-600);
  background: rgba(255, 255, 255, 0.92);
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 16px 36px rgba(120, 40, 80, 0.3);
}

.hero-visual {
  position: relative;
  margin-top: 30px;
  display: flex;
  justify-content: center;
}

.hero-visual svg {
  width: min(100%, 420px);
  height: auto;
  filter: drop-shadow(0 20px 40px rgba(90, 20, 60, 0.3));
  animation: floatSoft 6s ease-in-out infinite;
}

/* ============ 产品/优势/方案等网格化卡片 ============ */
#products h3,
#advantages h3,
#solutions h3,
#applications h3 {
  background: linear-gradient(120deg, rgba(255, 143, 177, 0.14), rgba(185, 140, 255, 0.12));
  padding: 12px 16px 12px 18px;
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--pink-400);
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
}

#products h3:hover,
#advantages h3:hover,
#solutions h3:hover,
#applications h3:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-sm);
  background: linear-gradient(120deg, rgba(255, 143, 177, 0.24), rgba(185, 140, 255, 0.2));
}

/* ============ 案例卡片 ============ */
#cases h3 {
  display: inline-block;
  padding: 6px 18px;
  margin-top: 1.5em;
  border-radius: var(--radius-pill);
  font-size: 1.05rem;
  color: #fff;
  background: var(--gradient-btn);
  background-size: 200% 200%;
  box-shadow: 0 8px 20px rgba(255, 107, 157, 0.28);
  transition: transform var(--transition-base), box-shadow var(--transition-base), background-position var(--transition-slow);
}

#cases h3:hover {
  transform: translateY(-3px) scale(1.03);
  background-position: 100% 50%;
  box-shadow: 0 14px 30px rgba(255, 107, 157, 0.4);
}

/* ============ 评价 ============ */
#testimonials blockquote {
  position: relative;
  margin: 0 0 18px;
  padding: 22px 26px 20px 54px;
  border-radius: var(--radius-lg);
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

#testimonials blockquote::before {
  content: "“";
  position: absolute;
  left: 16px;
  top: 4px;
  font-size: 3.4rem;
  line-height: 1;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--pink-300);
}

#testimonials blockquote:hover {
  transform: translateY(-4px);
  border-color: var(--pink-300);
  box-shadow: var(--shadow-md);
}

#testimonials blockquote p {
  margin-bottom: 0.5em;
  color: var(--ink-700);
  font-size: 1.02rem;
}

#testimonials blockquote footer {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--purple-500);
  letter-spacing: 0.03em;
}

/* ============ 新闻 ============ */
#news article {
  position: relative;
  margin-bottom: 22px;
  padding: 22px 24px;
  border-radius: var(--radius-lg);
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

#news article::after {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  bottom: 22px;
  width: 4px;
  border-radius: var(--radius-pill);
  background: var(--gradient-btn);
  opacity: 0;
  transition: opacity var(--transition-base);
}

#news article:hover {
  transform: translateX(6px);
  border-color: var(--pink-300);
  box-shadow: var(--shadow-md);
}

#news article:hover::after {
  opacity: 1;
}

#news article h3 {
  margin-top: 0;
  border-left: 0;
  padding-left: 0;
}

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

/* ============ 文章列表 ============ */
#articles article {
  position: relative;
  margin-bottom: 20px;
  padding: 24px 26px;
  border-radius: var(--radius-lg);
  background: var(--gradient-card);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

#articles article::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-btn);
  background-size: 200% 100%;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}

#articles article:hover {
  transform: translateY(-5px);
  border-color: var(--pink-300);
  box-shadow: var(--shadow-md);
}

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

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

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

#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 800;
  font-size: 0.92rem;
  padding: 7px 18px;
  border-radius: var(--radius-pill);
  background: rgba(255, 143, 177, 0.14);
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-base), box-shadow var(--transition-base);
}

#articles article a::after {
  content: "→";
  transition: transform var(--transition-base);
}

#articles article a:hover {
  color: #fff;
  background: var(--gradient-btn);
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(255, 107, 157, 0.34);
}

#articles article a:hover::after {
  transform: translateX(4px);
}

/* ============ HowTo ============ */
#howto ol {
  counter-reset: howto-step;
  list-style: none;
  padding-left: 0;
  display: grid;
  gap: 14px;
}

#howto ol li {
  position: relative;
  counter-increment: howto-step;
  padding: 16px 20px 16px 62px;
  border-radius: var(--radius-md);
  background: var(--surface-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

#howto ol li::before {
  content: counter(howto-step);
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 0.9rem;
  font-weight: 900;
  color: #fff;
  background: var(--gradient-btn);
  box-shadow: 0 6px 16px rgba(255, 107, 157, 0.34);
}

#howto ol li:hover {
  transform: translateX(6px);
  border-color: var(--pink-300);
  box-shadow: var(--shadow-md);
}

/* ============ FAQ ============ */
#faq details {
  margin-bottom: 14px;
  border-radius: var(--radius-md);
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}

#faq details:hover {
  border-color: var(--pink-300);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

#faq details[open] {
  border-color: var(--pink-400);
  box-shadow: var(--shadow-md);
}

#faq summary {
  position: relative;
  cursor: pointer;
  padding: 18px 54px 18px 22px;
  font-weight: 800;
  font-size: 1.02rem;
  color: var(--ink-800);
  list-style: none;
  transition: color var(--transition-fast), background var(--transition-fast);
}

#faq summary::-webkit-details-marker {
  display: none;
}

#faq summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  background: var(--gradient-btn);
  box-shadow: 0 6px 16px rgba(255, 107, 157, 0.3);
  transition: transform var(--transition-base), background var(--transition-base);
}

#faq details[open] summary {
  color: var(--pink-600);
  background: rgba(255, 143, 177, 0.1);
}

#faq details[open] summary::after {
  content: "−";
  transform: translateY(-50%) rotate(180deg);
}

#faq summary:hover {
  color: var(--pink-600);
}

#faq details p {
  margin: 0;
  padding: 4px 22px 20px;
  color: var(--ink-600);
  animation: fadeUp 0.4s ease both;
}

/* ============ 联系我们 ============ */
#contact h3 {
  margin-top: 1.2em;
}

#contact a {
  font-weight: 700;
  border-bottom: 2px solid rgba(255, 143, 177, 0.4);
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

#contact a:hover {
  border-color: var(--purple-500);
}

/* ============ 网站地图 / 友情链接 ============ */
#sitemap ul,
#links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  padding-left: 0;
}

#sitemap li,
#links li {
  margin: 0;
}

#sitemap a,
#links a {
  display: inline-block;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink-600);
  background: var(--surface-glass);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-base);
}

#sitemap a:hover,
#links a:hover {
  color: #fff;
  background: var(--gradient-btn);
  transform: translateY(-3px);
  box-shadow: 0 12px 26px rgba(255, 107, 157, 0.34);
}

/* ============ 更新说明 ============ */
#updates {
  background: var(--gradient-soft);
}

#updates p:last-child {
  margin-bottom: 0;
  font-size: 0.9rem;
  color: var(--ink-400);
}

/* ============ 页脚 ============ */
#site-footer {
  margin-top: 30px;
  padding: 46px 20px 34px;
  background: var(--gradient-hero);
  background-size: 200% 200%;
  animation: fadeUp 0.8s var(--transition-slow) both, shimmer 18s ease infinite;
  color: rgba(255, 255, 255, 0.94);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  box-shadow: 0 -12px 40px rgba(255, 107, 157, 0.2);
}

#site-footer > div {
  max-width: 1240px;
  margin: 0 auto 22px;
  text-align: center;
}

#site-footer p {
  margin: 0 0 8px;
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.92rem;
}

#site-footer p:first-child {
  font-size: 1.08rem;
  font-weight: 900;
  letter-spacing: 0.02em;
  text-shadow: 0 3px 16px rgba(120, 40, 80, 0.3);
}

#site-footer a {
  color: #fff;
  font-weight: 700;
  border-bottom: 2px solid rgba(255, 255, 255, 0.4);
  transition: border-color var(--transition-fast), opacity var(--transition-fast);
}

#site-footer a:hover {
  color: #fff;
  border-color: #fff;
  opacity: 0.92;
}

#site-footer > div:last-child {
  margin-bottom: 0;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.24);
  font-size: 0.86rem;
}

/* ============ 返回顶部 ============ */
body > a[href="#top"][aria-label="返回顶部"] {
  position: fixed;
  right: 22px;
  bottom: 26px;
  z-index: 120;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  font-size: 0;
  color: #fff;
  background: var(--gradient-btn);
  background-size: 200% 200%;
  box-shadow: 0 12px 30px rgba(255, 107, 157, 0.42);
  animation: pulseGlow 3s ease-in-out infinite;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background-position var(--transition-slow);
}

body > a[href="#top"][aria-label="返回顶部"]::before {
  content: "↑";
  font-size: 1.3rem;
  font-weight: 900;
  line-height: 1;
}

body > a[href="#top"][aria-label="返回顶部"]:hover {
  transform: translateY(-5px) scale(1.08);
  background-position: 100% 50%;
  box-shadow: 0 18px 40px rgba(255, 107, 157, 0.55);
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .header-inner {
    gap: 12px 16px;
  }

  #site-header nav ul {
    gap: 2px 4px;
  }

  #site-header nav a {
    padding: 6px 10px;
    font-size: 0.86rem;
  }

  .site-search {
    flex: 1 1 100%;
    order: 3;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  body {
    font-size: 15px;
    line-height: 1.7;
  }

  .header-inner {
    padding: 10px 14px;
  }

  .logo {
    font-size: 1.2rem;
  }

  #site-header nav {
    flex: 1 1 100%;
    order: 4;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  #site-header nav::-webkit-scrollbar {
    display: none;
  }

  #site-header nav ul {
    flex-wrap: nowrap;
    width: max-content;
    padding-bottom: 4px;
  }

  #site-header nav a {
    white-space: nowrap;
  }

  main {
    padding: 0 14px 46px;
  }

  main > section {
    margin: 20px 0;
    padding: 22px 18px;
    border-radius: var(--radius-lg);
  }

  main > section h2 {
    margin-bottom: 20px;
  }

  main > section h2::after {
    width: 56px;
    height: 4px;
  }

  #hero {
    padding: 30px 20px 34px;
    border-radius: var(--radius-lg);
  }

  #hero h1 {
    max-width: none;
  }

  .hero-actions {
    gap: 10px;
  }

  .btn-primary,
  .btn-secondary {
    flex: 1 1 auto;
    padding: 12px 20px;
    font-size: 0.92rem;
  }

  .hero-visual svg {
    width: min(100%, 300px);
  }

  #howto ol li {
    padding: 14px 16px 14px 56px;
  }

  #faq summary {
    padding: 15px 50px 15px 18px;
    font-size: 0.96rem;
  }

  #faq summary::after {
    right: 14px;
    width: 26px;
    height: 26px;
  }

  #faq details p {
    padding: 2px 18px 18px;
  }

  #site-footer {
    padding: 34px 16px 26px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  }

  body > a[href="#top"][aria-label="返回顶部"] {
    right: 14px;
    bottom: 18px;
    width: 46px;
    height: 46px;
  }
}

@media (max-width: 480px) {
  h1 { font-size: 1.6rem; }
  h2 { font-size: 1.32rem; }
  h3 { font-size: 1.08rem; }

  main > section {
    padding: 20px 15px;
    border-radius: var(--radius-md);
  }

  #hero {
    padding: 26px 16px 30px;
  }

  .btn-primary,
  .btn-secondary {
    flex: 1 1 100%;
  }

  #sitemap a,
  #links a {
    padding: 7px 14px;
    font-size: 0.84rem;
  }

  #testimonials blockquote {
    padding: 20px 18px 18px 46px;
  }

  #testimonials blockquote::before {
    left: 12px;
    font-size: 2.8rem;
  }
}

/* ============ 打印样式 ============ */
@media print {
  #site-header,
  body > a[href="#top"],
  #site-footer {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

  main > section {
    box-shadow: none;
    border: 1px solid #ddd;
    break-inside: avoid;
  }
}