:root {
  --mango: #ff6a00;
  --mango-deep: #e85a00;
  --mango-soft: #ff8f3f;
  --mango-glow: rgba(255, 106, 0, 0.35);
  --ink: #1c1a17;
  --ink-soft: #4a453f;
  --ink-mute: #7c756d;
  --bg: #fdf8f3;
  --bg-alt: #fff3e8;
  --card: rgba(255, 255, 255, 0.72);
  --card-solid: #ffffff;
  --border: rgba(255, 106, 0, 0.16);
  --border-soft: rgba(28, 26, 23, 0.08);
  --shadow-sm: 0 2px 10px rgba(120, 80, 40, 0.06);
  --shadow-md: 0 10px 30px rgba(120, 80, 40, 0.1);
  --shadow-lg: 0 24px 60px rgba(120, 80, 40, 0.14);
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 26px;
  --radius-pill: 999px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --glass-blur: saturate(180%) blur(18px);
  --header-h: 72px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f3ede6;
    --ink-soft: #cfc6bc;
    --ink-mute: #9a9188;
    --bg: #14110e;
    --bg-alt: #1c1813;
    --card: rgba(38, 32, 26, 0.66);
    --card-solid: #221d18;
    --border: rgba(255, 143, 63, 0.22);
    --border-soft: rgba(255, 255, 255, 0.08);
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.6);
    --mango-glow: rgba(255, 106, 0, 0.45);
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background-color: var(--bg);
  background-image:
    radial-gradient(1200px 600px at 10% -10%, rgba(255, 143, 63, 0.18), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(255, 106, 0, 0.14), transparent 55%),
    radial-gradient(800px 600px at 50% 100%, rgba(255, 180, 120, 0.12), transparent 60%);
  background-attachment: fixed;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--mango-deep);
  text-decoration: none;
  transition: color 0.25s var(--ease), opacity 0.25s var(--ease);
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--mango);
  outline-offset: 3px;
  border-radius: 6px;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(1.7rem, 4.2vw, 2.8rem); }
h2 { font-size: clamp(1.35rem, 3vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2.2vw, 1.4rem); }
h4 { font-size: 1.05rem; }

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

ul, ol {
  margin: 0 0 1em;
  padding-left: 1.35em;
  color: var(--ink-soft);
}

li { margin-bottom: 0.4em; }

strong { color: var(--ink); font-weight: 700; }

/* ============ Header ============ */
header[role="banner"] {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--card);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  animation: slideDown 0.6s var(--ease) both;
}

@keyframes slideDown {
  from { transform: translateY(-100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 24px;
  justify-content: space-between;
  align-items: center;
  padding: 6px clamp(16px, 4vw, 48px);
  font-size: 0.78rem;
  color: #fff;
  background: linear-gradient(90deg, var(--mango) 0%, var(--mango-deep) 55%, #ff9d4d 100%);
  background-size: 200% 100%;
  animation: gradientShift 8s ease infinite;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.topbar span { color: #fff; opacity: 0.95; }

header nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 28px;
  padding: 10px clamp(16px, 4vw, 48px);
  max-width: 1440px;
  margin: 0 auto;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.logo:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px var(--mango-glow);
}

.logo svg {
  border-radius: 10px;
  filter: drop-shadow(0 4px 10px var(--mango-glow));
}

.logo strong {
  background: linear-gradient(120deg, var(--mango-deep), var(--mango-soft));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 900;
}

header nav > ul {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 6px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1 1 auto;
}

header nav > ul li { margin: 0; }

header nav > ul a {
  display: inline-block;
  padding: 7px 13px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  color: var(--ink-soft);
  position: relative;
  transition: color 0.25s var(--ease), background 0.25s var(--ease), transform 0.25s var(--ease);
}

header nav > ul a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--mango);
  transform: translateX(-50%);
  transition: width 0.28s var(--ease);
}

header nav > ul a:hover,
header nav > ul a:focus-visible {
  color: var(--mango-deep);
  background: rgba(255, 106, 0, 0.09);
  transform: translateY(-1px);
}

header nav > ul a:hover::after { width: 40%; }

header nav form[role="search"] {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 0 1 300px;
  margin-left: auto;
}

header nav 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 nav form[role="search"] input[type="search"] {
  flex: 1 1 auto;
  min-width: 0;
  padding: 9px 16px;
  font-size: 0.9rem;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease);
}

@media (prefers-color-scheme: dark) {
  header nav form[role="search"] input[type="search"] {
    background: rgba(255, 255, 255, 0.06);
  }
}

header nav form[role="search"] input[type="search"]::placeholder {
  color: var(--ink-mute);
}

header nav form[role="search"] input[type="search"]:focus {
  border-color: var(--mango);
  background: var(--card-solid);
  box-shadow: 0 0 0 4px var(--mango-glow);
  outline: none;
}

header nav form[role="search"] button {
  padding: 9px 18px;
  font-size: 0.9rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--mango), var(--mango-deep));
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  white-space: nowrap;
  box-shadow: 0 6px 16px var(--mango-glow);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), filter 0.25s var(--ease);
}

header nav form[role="search"] button:hover {
  transform: translateY(-2px);
  filter: brightness(1.06);
  box-shadow: 0 10px 24px var(--mango-glow);
}

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

/* ============ Main layout ============ */
main {
  display: block;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 40px) 48px;
}

main > section,
main > aside,
main > nav[aria-label="面包屑导航"] {
  margin-top: clamp(28px, 4vw, 48px);
}

/* ============ Breadcrumb ============ */
nav[aria-label="面包屑导航"] ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 10px 18px;
  font-size: 0.85rem;
  color: var(--ink-mute);
  background: var(--card);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-sm);
  width: fit-content;
}

nav[aria-label="面包屑导航"] li { margin: 0; display: flex; align-items: center; gap: 6px; }
nav[aria-label="面包屑导航"] li + li::before {
  content: "/";
  color: var(--ink-mute);
  opacity: 0.6;
}
nav[aria-label="面包屑导航"] li[aria-current="page"] { color: var(--mango-deep); font-weight: 600; }

/* ============ Hero ============ */
#hero {
  position: relative;
  padding: clamp(24px, 4vw, 44px);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(255, 106, 0, 0.14), rgba(255, 180, 120, 0.06) 45%, rgba(255, 255, 255, 0.02)),
    var(--card);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  animation: fadeUp 0.8s var(--ease) both;
}

#hero::before {
  content: "";
  position: absolute;
  inset: -30% -10% auto auto;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(255, 106, 0, 0.28), transparent 65%);
  filter: blur(10px);
  pointer-events: none;
  animation: floatGlow 12s ease-in-out infinite alternate;
}

@keyframes floatGlow {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(-40px, 30px) scale(1.15); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

#hero-title {
  position: relative;
  background: linear-gradient(120deg, var(--mango-deep) 0%, var(--mango) 40%, #ffb066 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 2px 30px rgba(255, 106, 0, 0.12);
}

#hero > p {
  position: relative;
  max-width: 780px;
  font-size: clamp(0.95rem, 1.6vw, 1.05rem);
  color: var(--ink-soft);
}

/* ============ Banner carousel ============ */
.banner-carousel {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(280px, 1fr);
  gap: 18px;
  overflow-x: auto;
  padding: 6px 2px 18px;
  margin: 18px -2px 6px;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: var(--mango-soft) transparent;
}

.banner-carousel::-webkit-scrollbar { height: 8px; }
.banner-carousel::-webkit-scrollbar-track { background: transparent; }
.banner-carousel::-webkit-scrollbar-thumb {
  background: linear-gradient(90deg, var(--mango), var(--mango-soft));
  border-radius: 8px;
}

.banner-carousel article {
  scroll-snap-align: center;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
  position: relative;
}

.banner-carousel article::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18);
  pointer-events: none;
}

.banner-carousel article:hover {
  transform: translateY(-6px) scale(1.015);
  box-shadow: var(--shadow-lg);
}

.banner-carousel svg {
  width: 100%;
  height: auto;
  aspect-ratio: 640 / 260;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.banner-carousel article:hover svg { transform: scale(1.04); }

/* ============ Stats ============ */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.stats li {
  margin: 0;
  padding: 18px 16px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--ink-mute);
  background: var(--card);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

.stats li:hover {
  transform: translateY(-4px);
  border-color: var(--mango);
  box-shadow: 0 14px 30px var(--mango-glow);
}

.stats strong {
  display: block;
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 4px;
  background: linear-gradient(120deg, var(--mango-deep), var(--mango-soft));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ============ Aside page nav ============ */
aside[aria-label="页内锚点导航"] {
  padding: 20px clamp(18px, 3vw, 28px);
  background: var(--card);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

aside[aria-label="页内锚点导航"] h2 {
  font-size: 1.05rem;
  margin-bottom: 14px;
  padding-left: 12px;
  border-left: 4px solid var(--mango);
  border-radius: 2px;
}

aside[aria-label="页内锚点导航"] ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

aside[aria-label="页内锚点导航"] li { margin: 0; }

aside[aria-label="页内锚点导航"] a {
  display: inline-block;
  padding: 6px 14px;
  font-size: 0.85rem;
  color: var(--ink-soft);
  background: rgba(255, 106, 0, 0.07);
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  transition: all 0.25s var(--ease);
}

aside[aria-label="页内锚点导航"] a:hover {
  color: #fff;
  background: linear-gradient(135deg, var(--mango), var(--mango-deep));
  border-color: var(--mango);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px var(--mango-glow);
}

/* ============ Sections ============ */
main > section {
  padding: clamp(20px, 3.4vw, 36px);
  background: var(--card);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: box-shadow 0.4s var(--ease), border-color 0.4s var(--ease), transform 0.4s var(--ease);
  animation: fadeUp 0.7s var(--ease) both;
}

main > section:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border);
}

main > section > h2 {
  position: relative;
  padding-bottom: 12px;
  margin-bottom: 20px;
}

main > section > h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 64px;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--mango), var(--mango-soft));
  box-shadow: 0 2px 10px var(--mango-glow);
}

main > section h3 {
  margin-top: 1.4em;
  color: var(--ink);
}

main > section h3:first-of-type { margin-top: 0; }

main > section h4 {
  margin-top: 1.1em;
  color: var(--mango-deep);
}

/* ============ Blockquote / reviews ============ */
#reviews blockquote {
  margin: 0 0 16px;
  padding: 18px 22px;
  background: linear-gradient(135deg, rgba(255, 106, 0, 0.09), rgba(255, 180, 120, 0.05));
  border-left: 4px solid var(--mango);
  border-radius: var(--radius-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

#reviews blockquote:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

#reviews blockquote p {
  margin: 0 0 8px;
  font-size: 1rem;
  color: var(--ink);
  font-style: italic;
}

#reviews blockquote footer {
  font-size: 0.85rem;
  color: var(--ink-mute);
  text-align: right;
}

/* ============ News & Articles ============ */
#news article,
#articles article {
  padding: 18px 20px;
  margin-bottom: 16px;
  background: var(--card-solid);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
  position: relative;
  overflow: hidden;
}

#news article::before,
#articles article::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--mango), var(--mango-soft));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.35s var(--ease);
}

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

#news article:hover,
#articles article:hover {
  transform: translateY(-4px);
  border-color: var(--border);
  box-shadow: var(--shadow-md);
}

#news article h3,
#articles article h3 {
  margin: 0 0 6px;
  font-size: 1.1rem;
  transition: color 0.25s var(--ease);
}

#news article:hover h3,
#articles article:hover h3 { color: var(--mango-deep); }

#news time,
#articles time {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--mango-deep);
  background: rgba(255, 106, 0, 0.1);
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 8px;
}

#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--mango-deep);
  transition: gap 0.25s var(--ease);
}

#articles article a::after {
  content: "→";
  transition: transform 0.25s var(--ease);
}

#articles article a:hover { gap: 8px; }
#articles article a:hover::after { transform: translateX(3px); }

/* ============ FAQ details ============ */
#faq details {
  margin-bottom: 12px;
  padding: 0;
  background: var(--card-solid);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

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

#faq summary {
  list-style: none;
  cursor: pointer;
  padding: 16px 48px 16px 20px;
  font-weight: 700;
  color: var(--ink);
  position: relative;
  transition: background 0.25s var(--ease), color 0.25s var(--ease);
  user-select: none;
}

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

#faq summary::after {
  content: "";
  position: absolute;
  right: 20px;
  top: 50%;
  width: 10px;
  height: 10px;
  border-right: 2.5px solid var(--mango);
  border-bottom: 2.5px solid var(--mango);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.3s var(--ease);
}

#faq details[open] summary::after {
  transform: translateY(-30%) rotate(-135deg);
}

#faq summary:hover {
  background: rgba(255, 106, 0, 0.07);
  color: var(--mango-deep);
}

#faq details[open] summary {
  background: linear-gradient(90deg, rgba(255, 106, 0, 0.12), transparent);
  color: var(--mango-deep);
  border-bottom: 1px solid var(--border-soft);
}

#faq details p {
  margin: 0;
  padding: 14px 20px 18px;
  font-size: 0.95rem;
  animation: fadeUp 0.4s var(--ease) both;
}

/* ============ HowTo ============ */
#howto ol,
#howto ul {
  padding-left: 1.5em;
}

#howto ol li,
#howto ul li {
  padding: 4px 0;
  transition: color 0.2s var(--ease), transform 0.2s var(--ease);
}

#howto ol li:hover,
#howto ul li:hover {
  color: var(--mango-deep);
  transform: translateX(3px);
}

/* ============ Contact ============ */
#contact address {
  font-style: normal;
  padding: 20px clamp(18px, 3vw, 26px);
  background: linear-gradient(135deg, rgba(255, 106, 0, 0.08), rgba(255, 180, 120, 0.04));
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

#contact address ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

#contact address li {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  padding: 8px 0;
  margin: 0;
  font-size: 0.94rem;
  border-bottom: 1px dashed var(--border-soft);
  transition: color 0.2s var(--ease);
}

#contact address li:last-child { border-bottom: none; }
#contact address li:hover { color: var(--mango-deep); }

/* ============ Sitemap & Links ============ */
#sitemap ul,
#links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  padding: 0;
  margin: 0;
}

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

#sitemap a,
#links a {
  display: inline-block;
  padding: 8px 16px;
  font-size: 0.88rem;
  color: var(--ink-soft);
  background: var(--card-solid);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-pill);
  transition: all 0.25s var(--ease);
}

#sitemap a:hover,
#links a:hover {
  color: #fff;
  background: linear-gradient(135deg, var(--mango), var(--mango-deep));
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px var(--mango-glow);
}

/* ============ Legal ============ */
#legal h3 {
  font-size: 1.05rem;
  padding-left: 12px;
  border-left: 3px solid var(--mango);
  border-radius: 2px;
}

/* ============ Footer ============ */
footer[role="contentinfo"] {
  margin-top: clamp(32px, 5vw, 56px);
  padding: clamp(28px, 4vw, 44px) clamp(16px, 4vw, 48px);
  background: linear-gradient(160deg, rgba(28, 26, 23, 0.96), rgba(40, 30, 22, 0.98));
  color: #d8cfc6;
  text-align: center;
  position: relative;
  overflow: hidden;
}

footer[role="contentinfo"]::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--mango), var(--mango-soft), #ffb066, var(--mango));
  background-size: 200% 100%;
  animation: gradientShift 6s linear infinite;
}

footer[role="contentinfo"] p {
  margin: 0 0 10px;
  font-size: 0.86rem;
  color: #b8aea4;
  line-height: 1.7;
}

footer[role="contentinfo"] p:last-child { margin-bottom: 0; }

footer[role="contentinfo"] a {
  color: var(--mango-soft);
  font-weight: 600;
  position: relative;
  padding-bottom: 2px;
}

footer[role="contentinfo"] a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1.5px;
  background: var(--mango-soft);
  transition: width 0.3s var(--ease);
}

footer[role="contentinfo"] a:hover { color: #ffb066; }
footer[role="contentinfo"] a:hover::after { width: 100%; }

footer time { color: var(--mango-soft); }

/* ============ Scroll reveal (progressive enhancement) ============ */
@supports (animation-timeline: view()) {
  main > section {
    animation: revealUp linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 30%;
  }

  @keyframes revealUp {
    from { opacity: 0; transform: translateY(40px) scale(0.985); }
    to { opacity: 1; transform: translateY(0) scale(1); }
  }
}

/* ============ Responsive ============ */
@media (max-width: 1024px) {
  header nav { gap: 10px 18px; }
  header nav > ul { gap: 2px 2px; }
  header nav > ul a { padding: 6px 10px; font-size: 0.85rem; }
  header nav form[role="search"] { flex-basis: 240px; }
}

@media (max-width: 860px) {
  header nav {
    flex-direction: column;
    align-items: stretch;
  }

  .logo { align-self: flex-start; }

  header nav > ul {
    order: 3;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 6px;
    scrollbar-width: none;
  }

  header nav > ul::-webkit-scrollbar { display: none; }
  header nav > ul a { white-space: nowrap; }

  header nav form[role="search"] {
    order: 2;
    flex: 1 1 auto;
    margin-left: 0;
    max-width: 100%;
  }

  .banner-carousel {
    grid-auto-columns: minmax(260px, 82%);
  }
}

@media (max-width: 640px) {
  body { font-size: 15px; }

  .topbar {
    justify-content: center;
    text-align: center;
    font-size: 0.72rem;
    gap: 2px;
    padding: 5px 12px;
  }

  main { padding-left: 14px; padding-right: 14px; }

  #hero { padding: 20px 16px; border-radius: var(--radius); }

  .stats { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stats li { padding: 14px 10px; }

  main > section { padding: 18px 16px; border-radius: var(--radius); }

  #news article,
  #articles article { padding: 14px 16px; }

  #faq summary { padding: 14px 44px 14px 16px; font-size: 0.95rem; }
  #faq details p { padding: 12px 16px 16px; }

  #contact address { padding: 16px; }

  .banner-carousel { grid-auto-columns: minmax(240px, 92%); gap: 12px; }

  aside[aria-label="页内锚点导航"] { padding: 16px; }

  footer[role="contentinfo"] { padding: 24px 16px; }
}

@media (max-width: 380px) {
  .stats { grid-template-columns: 1fr; }
  header nav form[role="search"] button { padding: 9px 14px; }
}

/* ============ Motion & print ============ */
@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 print {
  header[role="banner"],
  aside[aria-label="页内锚点导航"],
  footer[role="contentinfo"] { display: none; }
  body { background: #fff; color: #000; }
  main > section { box-shadow: none; border: 1px solid #ddd; }
}