:root {
  --mango-primary: #FF6B1A;
  --mango-primary-dark: #E85A0C;
  --mango-primary-light: #FFB347;
  --mango-secondary: #1A1A2E;
  --mango-secondary-light: #2E2E4A;
  --mango-accent: #FFD166;
  --mango-bg: #FFF9F4;
  --mango-bg-alt: #FFFFFF;
  --mango-card: rgba(255, 255, 255, 0.72);
  --mango-card-border: rgba(255, 107, 26, 0.16);
  --mango-text: #1F1B16;
  --mango-text-soft: #5A5248;
  --mango-text-muted: #8A8078;
  --mango-shadow: 0 10px 30px rgba(255, 107, 26, 0.10), 0 2px 8px rgba(26, 26, 46, 0.06);
  --mango-shadow-hover: 0 18px 44px rgba(255, 107, 26, 0.22), 0 6px 16px rgba(26, 26, 46, 0.10);
  --mango-radius: 18px;
  --mango-radius-sm: 12px;
  --mango-radius-lg: 28px;
  --mango-glass: blur(16px) saturate(160%);
  --mango-transition: 0.32s cubic-bezier(0.22, 0.61, 0.36, 1);
  --mango-max: 1180px;
  --mango-font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --mango-bg: #14121A;
    --mango-bg-alt: #1B1822;
    --mango-card: rgba(38, 33, 46, 0.66);
    --mango-card-border: rgba(255, 179, 71, 0.18);
    --mango-text: #F5EFE8;
    --mango-text-soft: #C9C0B6;
    --mango-text-muted: #9A9188;
    --mango-shadow: 0 10px 30px rgba(0, 0, 0, 0.45), 0 2px 8px rgba(0, 0, 0, 0.30);
    --mango-shadow-hover: 0 18px 44px rgba(255, 107, 26, 0.30), 0 6px 16px rgba(0, 0, 0, 0.40);
  }
}

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

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

body {
  margin: 0;
  font-family: var(--mango-font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--mango-text);
  background-color: var(--mango-bg);
  background-image:
    radial-gradient(1100px 520px at 8% -8%, rgba(255, 107, 26, 0.18), transparent 62%),
    radial-gradient(900px 480px at 100% 0%, rgba(255, 179, 71, 0.16), transparent 60%),
    radial-gradient(800px 600px at 50% 110%, rgba(255, 107, 26, 0.08), transparent 65%);
  background-attachment: fixed;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--mango-primary);
  text-decoration: none;
  transition: color var(--mango-transition), opacity var(--mango-transition);
}

a:hover,
a:focus-visible {
  color: var(--mango-primary-dark);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(255, 107, 26, 0.55);
  outline-offset: 3px;
  border-radius: 6px;
}

ul,
ol {
  padding-left: 1.35em;
  margin: 0 0 1em;
}

li {
  margin: 0.35em 0;
}

p {
  margin: 0 0 1em;
  color: var(--mango-text-soft);
}

h1,
h2,
h3,
h4 {
  color: var(--mango-text);
  line-height: 1.3;
  margin: 0 0 0.6em;
  font-weight: 800;
  letter-spacing: 0.2px;
}

h1 {
  font-size: clamp(1.75rem, 4.4vw, 2.9rem);
  background: linear-gradient(120deg, var(--mango-primary) 0%, var(--mango-primary-light) 55%, var(--mango-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

h2 {
  font-size: clamp(1.35rem, 2.8vw, 2rem);
  position: relative;
  padding-left: 18px;
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.18em;
  bottom: 0.18em;
  width: 6px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--mango-primary), var(--mango-primary-light));
  box-shadow: 0 0 14px rgba(255, 107, 26, 0.55);
}

h3 {
  font-size: clamp(1.05rem, 1.9vw, 1.3rem);
  color: var(--mango-primary-dark);
}

@media (prefers-color-scheme: dark) {
  h3 {
    color: var(--mango-primary-light);
  }
}

/* ============ Header ============ */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--mango-card);
  -webkit-backdrop-filter: var(--mango-glass);
  backdrop-filter: var(--mango-glass);
  border-bottom: 1px solid var(--mango-card-border);
  box-shadow: 0 4px 24px rgba(26, 26, 46, 0.06);
  animation: mangoFadeDown 0.6s ease both;
}

header > div {
  max-width: var(--mango-max);
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

header > div > a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--mango-text);
  flex-shrink: 0;
}

header > div > a svg {
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(255, 107, 26, 0.45);
  transition: transform var(--mango-transition), box-shadow var(--mango-transition);
}

header > div > a:hover svg {
  transform: rotate(-6deg) scale(1.06);
  box-shadow: 0 10px 26px rgba(255, 107, 26, 0.6);
}

header > div > a span {
  background: linear-gradient(120deg, var(--mango-primary), var(--mango-primary-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

header nav {
  flex: 1 1 auto;
  min-width: 0;
}

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

header nav ul li {
  margin: 0;
}

header nav ul li a {
  display: inline-block;
  padding: 7px 13px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--mango-text-soft);
  transition: background var(--mango-transition), color var(--mango-transition), transform var(--mango-transition);
}

header nav ul li a:hover,
header nav ul li a:focus-visible {
  background: linear-gradient(120deg, rgba(255, 107, 26, 0.16), rgba(255, 179, 71, 0.22));
  color: var(--mango-primary-dark);
  transform: translateY(-2px);
}

@media (prefers-color-scheme: dark) {
  header nav ul li a:hover,
  header nav ul li a:focus-visible {
    color: var(--mango-accent);
  }
}

header form[role="search"] {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

header form[role="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;
}

header form[role="search"] input[type="search"] {
  width: 200px;
  padding: 9px 16px;
  font-size: 0.88rem;
  font-family: inherit;
  color: var(--mango-text);
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid var(--mango-card-border);
  border-radius: 999px;
  transition: width var(--mango-transition), border-color var(--mango-transition), box-shadow var(--mango-transition), background var(--mango-transition);
}

@media (prefers-color-scheme: dark) {
  header form[role="search"] input[type="search"] {
    background: rgba(255, 255, 255, 0.08);
  }
}

header form[role="search"] input[type="search"]::placeholder {
  color: var(--mango-text-muted);
}

header form[role="search"] input[type="search"]:focus {
  width: 240px;
  border-color: var(--mango-primary);
  box-shadow: 0 0 0 4px rgba(255, 107, 26, 0.18);
  outline: none;
  background: var(--mango-bg-alt);
}

header form[role="search"] button {
  padding: 9px 20px;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(120deg, var(--mango-primary), var(--mango-primary-light));
  border: none;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(255, 107, 26, 0.35);
  transition: transform var(--mango-transition), box-shadow var(--mango-transition), filter var(--mango-transition);
}

header form[role="search"] button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(255, 107, 26, 0.5);
  filter: brightness(1.05);
}

header form[role="search"] button:active {
  transform: translateY(0) scale(0.97);
}

/* ============ Breadcrumb ============ */
nav[aria-label="面包屑导航"] {
  max-width: var(--mango-max);
  margin: 18px auto 0;
  padding: 0 20px;
}

nav[aria-label="面包屑导航"] ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 10px 18px;
  font-size: 0.85rem;
  color: var(--mango-text-muted);
  background: var(--mango-card);
  -webkit-backdrop-filter: var(--mango-glass);
  backdrop-filter: var(--mango-glass);
  border: 1px solid var(--mango-card-border);
  border-radius: 999px;
  box-shadow: var(--mango-shadow);
}

nav[aria-label="面包屑导航"] ol li {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

nav[aria-label="面包屑导航"] ol li + li::before {
  content: "›";
  color: var(--mango-primary);
  font-weight: 700;
}

nav[aria-label="面包屑导航"] ol li[aria-current="page"] {
  color: var(--mango-primary-dark);
  font-weight: 700;
}

@media (prefers-color-scheme: dark) {
  nav[aria-label="面包屑导航"] ol li[aria-current="page"] {
    color: var(--mango-accent);
  }
}

/* ============ Main layout ============ */
main {
  max-width: var(--mango-max);
  margin: 0 auto;
  padding: 26px 20px 60px;
}

main section {
  position: relative;
  margin: 0 0 30px;
  padding: clamp(22px, 3.4vw, 42px);
  background: var(--mango-card);
  -webkit-backdrop-filter: var(--mango-glass);
  backdrop-filter: var(--mango-glass);
  border: 1px solid var(--mango-card-border);
  border-radius: var(--mango-radius-lg);
  box-shadow: var(--mango-shadow);
  transition: transform var(--mango-transition), box-shadow var(--mango-transition), border-color var(--mango-transition);
  animation: mangoRise 0.7s cubic-bezier(0.22, 0.61, 0.36, 1) both;
}

main section:hover {
  transform: translateY(-4px);
  box-shadow: var(--mango-shadow-hover);
  border-color: rgba(255, 107, 26, 0.32);
}

main section > h2:first-child {
  margin-top: 0;
}

/* ============ Hero ============ */
#hero {
  background:
    linear-gradient(135deg, rgba(255, 107, 26, 0.94) 0%, rgba(255, 107, 26, 0.82) 38%, rgba(255, 179, 71, 0.78) 100%),
    var(--mango-secondary);
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #fff;
  overflow: hidden;
}

#hero::after {
  content: "";
  position: absolute;
  inset: auto -12% -55% auto;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.34), transparent 62%);
  border-radius: 50%;
  pointer-events: none;
  animation: mangoFloat 9s ease-in-out infinite;
}

#hero::before {
  content: "";
  position: absolute;
  inset: -40% auto auto -14%;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(255, 209, 102, 0.42), transparent 64%);
  border-radius: 50%;
  pointer-events: none;
  animation: mangoFloat 11s ease-in-out infinite reverse;
}

#hero h1 {
  background: linear-gradient(100deg, #FFFFFF 0%, #FFE9C9 46%, #FFD166 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  position: relative;
  z-index: 2;
  text-shadow: 0 2px 22px rgba(0, 0, 0, 0.10);
  filter: drop-shadow(0 2px 10px rgba(26, 26, 46, 0.18));
}

#hero p {
  color: rgba(255, 255, 255, 0.94);
  font-size: clamp(0.95rem, 1.6vw, 1.06rem);
  position: relative;
  z-index: 2;
  max-width: 76ch;
}

#hero > div {
  position: relative;
  z-index: 2;
  margin: 26px 0;
  border-radius: var(--mango-radius);
  overflow: hidden;
  box-shadow: 0 22px 50px rgba(26, 26, 46, 0.38);
  transition: transform var(--mango-transition), box-shadow var(--mango-transition);
}

#hero > div:hover {
  transform: scale(1.012);
  box-shadow: 0 30px 64px rgba(26, 26, 46, 0.5);
}

#hero > div svg {
  width: 100%;
  height: auto;
  display: block;
}

#hero ul {
  position: relative;
  z-index: 2;
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

#hero ul li {
  margin: 0;
  padding: 13px 18px 13px 44px;
  position: relative;
  font-weight: 600;
  font-size: 0.94rem;
  color: #fff;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: var(--mango-radius-sm);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: background var(--mango-transition), transform var(--mango-transition);
}

#hero ul li::before {
  content: "✓";
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  font-size: 0.72rem;
  font-weight: 900;
  color: var(--mango-primary-dark);
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
}

#hero ul li:hover {
  background: rgba(255, 255, 255, 0.26);
  transform: translateY(-3px);
}

/* ============ Products / lists ============ */
#products ul,
#cases ul,
#sitemap ul,
footer ul {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
  display: grid;
  gap: 10px;
}

#products ul {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

#products ul li {
  position: relative;
  margin: 0;
  padding: 14px 18px 14px 46px;
  font-size: 0.94rem;
  color: var(--mango-text-soft);
  background: linear-gradient(135deg, rgba(255, 107, 26, 0.08), rgba(255, 179, 71, 0.10));
  border: 1px solid var(--mango-card-border);
  border-radius: var(--mango-radius-sm);
  transition: transform var(--mango-transition), box-shadow var(--mango-transition), background var(--mango-transition);
}

#products ul li::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 50%;
  width: 12px;
  height: 12px;
  transform: translateY(-50%) rotate(45deg);
  background: linear-gradient(135deg, var(--mango-primary), var(--mango-primary-light));
  border-radius: 3px;
  box-shadow: 0 0 12px rgba(255, 107, 26, 0.6);
}

#products ul li:hover {
  transform: translateY(-3px);
  background: linear-gradient(135deg, rgba(255, 107, 26, 0.16), rgba(255, 179, 71, 0.18));
  box-shadow: 0 10px 26px rgba(255, 107, 26, 0.20);
}

/* ============ Cases ============ */
#cases h3 {
  margin-top: 1.4em;
  padding: 12px 18px;
  background: linear-gradient(120deg, rgba(255, 107, 26, 0.12), rgba(255, 209, 102, 0.14));
  border-left: 5px solid var(--mango-primary);
  border-radius: 0 var(--mango-radius-sm) var(--mango-radius-sm) 0;
  transition: transform var(--mango-transition), box-shadow var(--mango-transition);
}

#cases h3:hover {
  transform: translateX(6px);
  box-shadow: -4px 6px 20px rgba(255, 107, 26, 0.22);
}

#cases ul {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

#cases ul li {
  margin: 0;
  padding: 16px 18px;
  font-style: italic;
  color: var(--mango-text-soft);
  background: var(--mango-bg-alt);
  border: 1px solid var(--mango-card-border);
  border-radius: var(--mango-radius-sm);
  box-shadow: var(--mango-shadow);
  position: relative;
  transition: transform var(--mango-transition), box-shadow var(--mango-transition);
}

#cases ul li::before {
  content: "“";
  position: absolute;
  top: -6px;
  left: 10px;
  font-size: 2.6rem;
  line-height: 1;
  color: var(--mango-primary);
  opacity: 0.35;
  font-family: Georgia, serif;
}

#cases ul li:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: var(--mango-shadow-hover);
}

/* ============ News ============ */
#news h3 {
  margin-top: 1.5em;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--mango-card-border);
  transition: color var(--mango-transition), border-color var(--mango-transition);
}

#news h3:hover {
  color: var(--mango-primary);
  border-color: var(--mango-primary);
}

/* ============ Articles ============ */
#articles {
  display: grid;
  grid-template-columns: 1fr;
}

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

#articles article {
  margin: 0 0 18px;
  padding: 20px 22px;
  background: var(--mango-bg-alt);
  border: 1px solid var(--mango-card-border);
  border-radius: var(--mango-radius);
  box-shadow: var(--mango-shadow);
  position: relative;
  overflow: hidden;
  transition: transform var(--mango-transition), box-shadow var(--mango-transition), border-color var(--mango-transition);
}

#articles article::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: linear-gradient(180deg, var(--mango-primary), var(--mango-primary-light));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--mango-transition);
}

#articles article:hover {
  transform: translateY(-5px);
  box-shadow: var(--mango-shadow-hover);
  border-color: rgba(255, 107, 26, 0.34);
}

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

#articles article h3 {
  margin-top: 0;
  color: var(--mango-text);
}

#articles article p:first-of-type {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--mango-primary);
  margin-bottom: 8px;
  letter-spacing: 0.4px;
}

#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 7px 16px;
  border-radius: 999px;
  color: var(--mango-primary-dark);
  background: rgba(255, 107, 26, 0.10);
  transition: background var(--mango-transition), color var(--mango-transition), transform var(--mango-transition), box-shadow var(--mango-transition);
}

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

#articles article a:hover {
  color: #fff;
  background: linear-gradient(120deg, var(--mango-primary), var(--mango-primary-light));
  box-shadow: 0 8px 20px rgba(255, 107, 26, 0.38);
  transform: translateY(-2px);
}

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

@media (min-width: 760px) {
  #articles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  #articles article {
    margin: 0;
  }
}

@media (min-width: 1080px) {
  #articles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ============ HowTo ============ */
#howto ol {
  counter-reset: mangoStep;
  list-style: none;
  padding: 0;
  margin: 20px 0;
  display: grid;
  gap: 12px;
}

#howto ol li {
  counter-increment: mangoStep;
  position: relative;
  margin: 0;
  padding: 16px 20px 16px 62px;
  font-weight: 600;
  color: var(--mango-text-soft);
  background: linear-gradient(120deg, rgba(255, 107, 26, 0.07), rgba(255, 209, 102, 0.10));
  border: 1px solid var(--mango-card-border);
  border-radius: var(--mango-radius-sm);
  transition: transform var(--mango-transition), box-shadow var(--mango-transition), background var(--mango-transition);
}

#howto ol li::before {
  content: counter(mangoStep);
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  font-size: 0.95rem;
  font-weight: 900;
  color: #fff;
  background: linear-gradient(135deg, var(--mango-primary), var(--mango-primary-light));
  border-radius: 50%;
  box-shadow: 0 6px 16px rgba(255, 107, 26, 0.42);
}

#howto ol li:hover {
  transform: translateX(6px);
  background: linear-gradient(120deg, rgba(255, 107, 26, 0.14), rgba(255, 209, 102, 0.16));
  box-shadow: 0 10px 26px rgba(255, 107, 26, 0.20);
}

/* ============ FAQ ============ */
#faq details {
  margin: 0 0 12px;
  padding: 0;
  background: var(--mango-bg-alt);
  border: 1px solid var(--mango-card-border);
  border-radius: var(--mango-radius);
  box-shadow: var(--mango-shadow);
  overflow: hidden;
  transition: box-shadow var(--mango-transition), border-color var(--mango-transition), transform var(--mango-transition);
}

#faq details[open] {
  border-color: rgba(255, 107, 26, 0.34);
  box-shadow: var(--mango-shadow-hover);
}

#faq details:hover {
  transform: translateY(-2px);
}

#faq summary {
  cursor: pointer;
  list-style: none;
  padding: 16px 52px 16px 20px;
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--mango-text);
  position: relative;
  transition: color var(--mango-transition), background var(--mango-transition);
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--mango-primary);
  background: rgba(255, 107, 26, 0.12);
  border-radius: 50%;
  transition: transform var(--mango-transition), background var(--mango-transition), color var(--mango-transition);
}

#faq details[open] summary::after {
  content: "−";
  transform: translateY(-50%) rotate(180deg);
  background: linear-gradient(135deg, var(--mango-primary), var(--mango-primary-light));
  color: #fff;
}

#faq summary:hover {
  color: var(--mango-primary-dark);
  background: rgba(255, 107, 26, 0.05);
}

#faq details p {
  margin: 0;
  padding: 0 20px 18px;
  font-size: 0.94rem;
  animation: mangoFadeIn 0.4s ease both;
}

/* ============ Notes / Contact ============ */
#notes h3,
#contact h3 {
  margin-top: 1.4em;
}

#contact p {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
  padding: 10px 16px;
  margin: 0 0 8px;
  background: linear-gradient(120deg, rgba(255, 107, 26, 0.06), rgba(255, 179, 71, 0.08));
  border-radius: var(--mango-radius-sm);
  border-left: 4px solid var(--mango-primary-light);
  transition: transform var(--mango-transition), border-color var(--mango-transition), background var(--mango-transition);
}

#contact p:hover {
  transform: translateX(5px);
  border-color: var(--mango-primary);
  background: linear-gradient(120deg, rgba(255, 107, 26, 0.12), rgba(255, 179, 71, 0.14));
}

/* ============ Sitemap ============ */
#sitemap ul {
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

#sitemap ul li {
  margin: 0;
}

#sitemap ul li a {
  display: block;
  padding: 12px 16px;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--mango-text-soft);
  background: var(--mango-bg-alt);
  border: 1px solid var(--mango-card-border);
  border-radius: var(--mango-radius-sm);
  text-align: center;
  transition: transform var(--mango-transition), box-shadow var(--mango-transition), color var(--mango-transition), background var(--mango-transition), border-color var(--mango-transition);
}

#sitemap ul li a:hover {
  transform: translateY(-4px);
  color: #fff;
  background: linear-gradient(120deg, var(--mango-primary), var(--mango-primary-light));
  border-color: transparent;
  box-shadow: 0 12px 28px rgba(255, 107, 26, 0.36);
}

/* ============ Footer ============ */
footer {
  margin-top: 20px;
  background: linear-gradient(160deg, var(--mango-secondary) 0%, #241F33 55%, #1A1A2E 100%);
  color: rgba(255, 255, 255, 0.82);
  padding: clamp(30px, 5vw, 56px) 20px 26px;
  border-top: 1px solid rgba(255, 179, 71, 0.22);
  position: relative;
  overflow: hidden;
}

footer::before {
  content: "";
  position: absolute;
  inset: -60% -10% auto auto;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(255, 107, 26, 0.28), transparent 62%);
  border-radius: 50%;
  pointer-events: none;
}

footer > section {
  max-width: var(--mango-max);
  margin: 0 auto 26px;
  position: relative;
  z-index: 2;
}

footer h2 {
  color: #fff;
  font-size: 1.15rem;
  padding-left: 16px;
}

footer h2::before {
  background: linear-gradient(180deg, var(--mango-primary-light), var(--mango-accent));
  box-shadow: 0 0 14px rgba(255, 179, 71, 0.7);
}

footer p {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.9rem;
  margin: 0 0 8px;
}

footer ul {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
}

footer ul li {
  margin: 0;
}

footer ul li a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.86);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: transform var(--mango-transition), background var(--mango-transition), color var(--mango-transition), box-shadow var(--mango-transition);
}

footer ul li a::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mango-primary-light);
  box-shadow: 0 0 10px var(--mango-primary-light);
  flex-shrink: 0;
}

footer ul li a:hover {
  transform: translateY(-3px);
  color: #fff;
  background: linear-gradient(120deg, var(--mango-primary), var(--mango-primary-light));
  border-color: transparent;
  box-shadow: 0 12px 28px rgba(255, 107, 26, 0.42);
}

footer section[aria-labelledby="legal-title"] p:last-child {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  text-align: center;
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.55);
}

/* ============ Animations ============ */
@keyframes mangoFadeDown {
  from {
    opacity: 0;
    transform: translateY(-14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes mangoRise {
  from {
    opacity: 0;
    transform: translateY(26px) scale(0.99);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

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

@keyframes mangoFloat {
  0%, 100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(-18px, 16px, 0) scale(1.06);
  }
}

/* Staggered reveal */
main section:nth-of-type(1) { animation-delay: 0.02s; }
main section:nth-of-type(2) { animation-delay: 0.06s; }
main section:nth-of-type(3) { animation-delay: 0.10s; }
main section:nth-of-type(4) { animation-delay: 0.14s; }
main section:nth-of-type(5) { animation-delay: 0.18s; }
main section:nth-of-type(6) { animation-delay: 0.22s; }
main section:nth-of-type(7) { animation-delay: 0.26s; }
main section:nth-of-type(8) { animation-delay: 0.30s; }
main section:nth-of-type(9) { animation-delay: 0.34s; }
main section:nth-of-type(10) { animation-delay: 0.38s; }
main section:nth-of-type(11) { animation-delay: 0.42s; }
main section:nth-of-type(12) { animation-delay: 0.46s; }
main section:nth-of-type(13) { animation-delay: 0.50s; }

/* ============ Responsive ============ */
@media (max-width: 980px) {
  header > div {
    gap: 12px;
  }

  header nav {
    order: 3;
    flex-basis: 100%;
  }

  header nav ul {
    justify-content: center;
  }

  header form[role="search"] {
    margin-left: auto;
  }

  header form[role="search"] input[type="search"] {
    width: 160px;
  }

  header form[role="search"] input[type="search"]:focus {
    width: 200px;
  }
}

@media (max-width: 680px) {
  body {
    font-size: 15px;
  }

  header > div {
    padding: 10px 14px;
  }

  header > div > a span {
    font-size: 1rem;
  }

  header nav ul li a {
    padding: 6px 11px;
    font-size: 0.85rem;
  }

  header form[role="search"] {
    flex-basis: 100%;
    margin-left: 0;
  }

  header form[role="search"] input[type="search"],
  header form[role="search"] input[type="search"]:focus {
    width: 100%;
    flex: 1 1 auto;
  }

  nav[aria-label="面包屑导航"] {
    margin-top: 12px;
    padding: 0 14px;
  }

  nav[aria-label="面包屑导航"] ol {
    padding: 8px 14px;
    font-size: 0.78rem;
  }

  main {
    padding: 16px 14px 44px;
  }

  main section {
    margin-bottom: 20px;
    padding: 20px 16px;
    border-radius: var(--mango-radius);
  }

  #hero ul {
    grid-template-columns: 1fr;
  }

  #hero > div {
    margin: 18px 0;
  }

  #products ul,
  #cases ul,
  #sitemap ul {
    grid-template-columns: 1fr;
  }

  #faq summary {
    padding: 14px 48px 14px 16px;
    font-size: 0.92rem;
  }

  #faq details p {
    padding: 0 16px 16px;
    font-size: 0.9rem;
  }

  #howto ol li {
    padding: 14px 16px 14px 58px;
  }

  footer {
    padding: 28px 14px 20px;
  }

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

@media (max-width: 380px) {
  header > div > a span {
    display: none;
  }

  #hero ul li {
    font-size: 0.88rem;
    padding: 11px 14px 11px 40px;
  }
}

/* ============ Motion & contrast preferences ============ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

@media (prefers-contrast: more) {
  :root {
    --mango-card: rgba(255, 255, 255, 0.96);
    --mango-text-soft: #3A342C;
    --mango-text-muted: #4A423A;
  }

  main section,
  #articles article,
  #faq details {
    border-width: 2px;
  }
}

/* ============ Print ============ */
@media print {
  header,
  footer,
  nav[aria-label="面包屑导航"],
  #hero > div,
  #hero::before,
  #hero::after {
    display: none !important;
  }

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

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