:root {
  --color-primary: #f2a900;
  --color-primary-dark: #d99400;
  --color-primary-light: #ffc233;
  --color-accent: #7c4dff;
  --color-accent-light: #b388ff;
  --color-bg: #f7f8fc;
  --color-bg-alt: #ffffff;
  --color-bg-deep: #1a1a2e;
  --color-text: #1f2333;
  --color-text-secondary: #5a6072;
  --color-text-muted: #8b90a0;
  --color-border: rgba(26, 26, 46, 0.08);
  --color-card: rgba(255, 255, 255, 0.72);
  --color-card-hover: rgba(255, 255, 255, 0.92);
  --color-glass: rgba(255, 255, 255, 0.55);
  --color-glass-border: rgba(255, 255, 255, 0.65);
  --gradient-hero: linear-gradient(135deg, #1a1a2e 0%, #2d2d5e 45%, #4a2e7a 100%);
  --gradient-primary: linear-gradient(135deg, #f2a900 0%, #ff6b35 100%);
  --gradient-accent: linear-gradient(135deg, #7c4dff 0%, #f2a900 100%);
  --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
  --shadow-md: 0 8px 24px rgba(26, 26, 46, 0.1);
  --shadow-lg: 0 16px 48px rgba(26, 26, 46, 0.16);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --transition: 0.32s cubic-bezier(0.22, 0.61, 0.36, 1);
  --max-width: 1200px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0f0f1a;
    --color-bg-alt: #171728;
    --color-bg-deep: #0a0a12;
    --color-text: #e8e9f0;
    --color-text-secondary: #a8adc0;
    --color-text-muted: #6f7488;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-card: rgba(30, 30, 52, 0.72);
    --color-card-hover: rgba(40, 40, 68, 0.92);
    --color-glass: rgba(26, 26, 46, 0.55);
    --color-glass-border: rgba(255, 255, 255, 0.12);
    --gradient-hero: linear-gradient(135deg, #0a0a12 0%, #1a1a2e 45%, #2d1a4a 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.55);
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background: var(--color-bg);
  background-image: radial-gradient(
      ellipse 80% 50% at 50% -20%,
      rgba(124, 77, 255, 0.08),
      transparent
    ),
    radial-gradient(
      ellipse 60% 40% at 100% 100%,
      rgba(242, 169, 0, 0.06),
      transparent
    );
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  color: var(--color-primary);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

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

li {
  margin-bottom: 0.4em;
}

h1,
h2,
h3,
h4 {
  line-height: 1.3;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  background: linear-gradient(120deg, #ffffff 0%, #ffc233 60%, #ff8a4c 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  margin-bottom: 1.25rem;
  padding-bottom: 0.6rem;
  position: relative;
}

h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 4px;
  border-radius: 2px;
  background: var(--gradient-primary);
}

h3 {
  font-size: clamp(1.1rem, 1.8vw, 1.3rem);
  margin: 1.5rem 0 0.75rem;
  color: var(--color-text);
}

p {
  margin-bottom: 1rem;
  color: var(--color-text-secondary);
}

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

blockquote {
  margin: 1.25rem 0;
  padding: 1rem 1.5rem;
  background: var(--color-card);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}

blockquote p {
  margin-bottom: 0.6rem;
  font-style: italic;
  color: var(--color-text-secondary);
}

blockquote p:last-child {
  margin-bottom: 0;
}

/* ============ HEADER / NAV ============ */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 0.75rem 1.25rem;
  background: var(--color-glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-glass-border);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition), box-shadow var(--transition);
}

header nav {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.25rem 0.5rem;
}

header nav a {
  position: relative;
  display: inline-block;
  padding: 0.45rem 0.85rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: 999px;
  transition: color var(--transition), background var(--transition),
    transform var(--transition);
}

header nav a::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: var(--gradient-primary);
  opacity: 0;
  transform: scale(0.85);
  transition: opacity var(--transition), transform var(--transition);
  z-index: -1;
}

header nav a:hover,
header nav a:focus-visible {
  color: #ffffff;
  transform: translateY(-1px);
}

header nav a:hover::before,
header nav a:focus-visible::before {
  opacity: 1;
  transform: scale(1);
}

/* ============ MAIN LAYOUT ============ */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
}

main > section {
  margin: 2.5rem 0;
  padding: 2rem;
  background: var(--color-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  transition: box-shadow var(--transition), transform var(--transition),
    border-color var(--transition);
  animation: fadeInUp 0.7s cubic-bezier(0.22, 0.61, 0.36, 1) both;
}

main > section:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(242, 169, 0, 0.25);
}

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

@keyframes floatIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

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

/* ============ HERO ============ */
#hero {
  position: relative;
  margin-top: 2rem;
  padding: 3rem 2rem;
  background: var(--gradient-hero);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-lg);
}

#hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 70%;
  height: 200%;
  background: radial-gradient(
    circle,
    rgba(242, 169, 0, 0.25) 0%,
    transparent 60%
  );
  pointer-events: none;
}

#hero::after {
  content: "";
  position: absolute;
  bottom: -40%;
  left: -10%;
  width: 60%;
  height: 160%;
  background: radial-gradient(
    circle,
    rgba(124, 77, 255, 0.28) 0%,
    transparent 65%
  );
  pointer-events: none;
}

#hero h1 {
  position: relative;
  z-index: 1;
  font-size: clamp(1.6rem, 4.2vw, 2.9rem);
  margin-bottom: 1.25rem;
}

#hero > p {
  position: relative;
  z-index: 1;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(0.95rem, 1.6vw, 1.08rem);
  max-width: 900px;
  line-height: 1.85;
}

#hero [aria-label="Banner轮播"] {
  position: relative;
  z-index: 1;
  margin: 2rem 0;
}

#hero figure {
  position: relative;
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition);
}

#hero figure:hover {
  transform: scale(1.015);
}

#hero figure svg {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

#hero figcaption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.75rem 1.25rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.9);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

#hero ul {
  position: relative;
  z-index: 1;
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

#hero ul li {
  padding: 1rem 1.25rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-md);
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform var(--transition), background var(--transition),
    border-color var(--transition);
}

#hero ul li:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(242, 169, 0, 0.5);
}

#hero ul li strong {
  color: var(--color-primary-light);
  display: inline-block;
  margin-right: 0.35rem;
}

/* ============ BRAND / INTRO ============ */
#brand,
#intro {
  position: relative;
}

#brand h3,
#intro h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

#brand h3::before,
#intro h3::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient-primary);
  flex-shrink: 0;
}

/* ============ PRODUCTS ============ */
#products ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

#products ul li {
  position: relative;
  padding: 1.1rem 1.25rem 1.1rem 2.75rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
}

#products ul li::before {
  content: "✓";
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
}

#products ul li:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(242, 169, 0, 0.35);
}

/* ============ SOLUTIONS ============ */
#solutions h3 {
  color: var(--color-text);
}

#solutions p {
  padding-left: 1rem;
  border-left: 3px solid rgba(124, 77, 255, 0.25);
  margin-left: 0.25rem;
}

/* ============ CASES ============ */
#cases blockquote {
  background: linear-gradient(
    135deg,
    rgba(242, 169, 0, 0.06),
    rgba(124, 77, 255, 0.06)
  );
  border-left-color: var(--color-accent);
}

#cases blockquote p {
  position: relative;
  padding-left: 1.5rem;
}

#cases blockquote p::before {
  content: "“";
  position: absolute;
  left: 0;
  top: -0.2em;
  font-size: 2rem;
  line-height: 1;
  color: var(--color-primary);
  font-family: Georgia, serif;
  opacity: 0.7;
}

/* ============ NEWS ============ */
#news h3 {
  display: inline-block;
  padding-bottom: 0.35rem;
  border-bottom: 2px solid rgba(242, 169, 0, 0.3);
}

#news h3 + p {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
  font-variant-numeric: tabular-nums;
}

#news h3 + p::before {
  content: "📅 ";
  font-size: 0.8rem;
}

/* ============ ARTICLES ============ */
#articles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

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

#articles article {
  position: relative;
  padding: 1.5rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
}

#articles article::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--transition);
}

#articles article:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(124, 77, 255, 0.3);
}

#articles article:hover::before {
  opacity: 1;
}

#articles article h3 {
  margin-top: 0;
  font-size: 1.08rem;
  line-height: 1.5;
}

#articles article h3 a,
#articles article h3 {
  color: var(--color-text);
}

#articles article > p:nth-of-type(1) {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.6rem;
  font-variant-numeric: tabular-nums;
}

#articles article > p:nth-of-type(1)::before {
  content: "🕒 ";
}

#articles article > p:nth-of-type(2) {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

#articles article > a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  background: rgba(242, 169, 0, 0.1);
  transition: background var(--transition), color var(--transition),
    transform var(--transition), gap var(--transition);
}

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

#articles article > a:hover {
  background: var(--gradient-primary);
  color: #ffffff;
  transform: translateX(2px);
}

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

/* ============ HOWTO ============ */
#howto ol {
  counter-reset: step;
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0.85rem;
  margin: 1.25rem 0;
}

#howto ol li {
  counter-increment: step;
  position: relative;
  padding: 1rem 1.25rem 1rem 3.5rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
}

#howto ol li::before {
  content: counter(step);
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.85rem;
  box-shadow: 0 4px 10px rgba(242, 169, 0, 0.35);
}

#howto ol li:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(242, 169, 0, 0.35);
}

#howto h3 {
  margin-top: 1.75rem;
  padding-left: 1rem;
  border-left: 4px solid var(--color-primary);
}

/* ============ FAQ ============ */
#faq details {
  margin-bottom: 0.85rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition),
    background var(--transition);
}

#faq details:hover {
  border-color: rgba(242, 169, 0, 0.35);
  box-shadow: var(--shadow-sm);
}

#faq details[open] {
  border-color: rgba(242, 169, 0, 0.5);
  box-shadow: var(--shadow-md);
  background: var(--color-card-hover);
}

#faq summary {
  position: relative;
  padding: 1.1rem 3rem 1.1rem 1.25rem;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  transition: color var(--transition);
  user-select: none;
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(242, 169, 0, 0.12);
  color: var(--color-primary-dark);
  font-size: 1.15rem;
  font-weight: 400;
  transition: transform var(--transition), background var(--transition),
    color var(--transition);
}

#faq details[open] summary {
  color: var(--color-primary-dark);
}

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

#faq details p {
  padding: 0 1.25rem 1.25rem;
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
  animation: floatIn 0.35s ease both;
}

/* ============ NOTICE ============ */
#notice {
  background: linear-gradient(
    135deg,
    rgba(242, 169, 0, 0.06),
    rgba(124, 77, 255, 0.06)
  );
}

#notice h3 {
  color: var(--color-text);
}

/* ============ CONTACT ============ */
#contact h3 {
  display: inline-block;
  padding: 0.3rem 1rem;
  background: var(--gradient-primary);
  color: #ffffff;
  border-radius: 999px;
  font-size: 0.95rem;
  margin-top: 1.75rem;
  margin-bottom: 1rem;
}

#contact h3:first-of-type {
  margin-top: 0;
}

#contact p {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.5rem;
  padding: 0.6rem 1rem;
  margin-bottom: 0.5rem;
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-size: 0.93rem;
  transition: border-color var(--transition), transform var(--transition);
}

#contact p:hover {
  border-color: rgba(242, 169, 0, 0.35);
  transform: translateX(3px);
}

#contact a {
  word-break: break-all;
}

/* ============ SITEMAP / LINKS ============ */
#sitemap ul,
#links ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

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

#sitemap a,
#links a {
  display: inline-block;
  padding: 0.45rem 1rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  transition: all var(--transition);
}

#sitemap a:hover,
#links a:hover {
  color: #ffffff;
  background: var(--gradient-primary);
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(242, 169, 0, 0.3);
}

/* ============ FOOTER ============ */
footer {
  margin-top: 3rem;
  padding: 3rem 1.25rem 2rem;
  background: var(--color-bg-deep);
  color: rgba(255, 255, 255, 0.75);
  position: relative;
  overflow: hidden;
}

footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-accent);
}

footer > section {
  max-width: var(--max-width);
  margin: 0 auto 1.75rem;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background var(--transition), border-color var(--transition);
}

footer > section:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(242, 169, 0, 0.3);
}

footer h2 {
  font-size: 1.05rem;
  color: #ffffff;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
}

footer h2::after {
  width: 40px;
  height: 3px;
}

footer p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

footer p:last-child {
  margin-bottom: 0;
}

footer > p {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

footer a {
  color: var(--color-primary-light);
}

footer a:hover {
  color: #ffffff;
}

/* ============ RESPONSIVE ============ */
@media (min-width: 768px) {
  #articles {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  #articles {
    grid-template-columns: repeat(3, 1fr);
  }

  #hero {
    padding: 4rem 3rem;
  }

  main > section {
    padding: 2.5rem;
  }
}

@media (max-width: 767px) {
  html {
    scroll-padding-top: 76px;
  }

  body {
    font-size: 15px;
  }

  header {
    padding: 0.5rem 0.75rem;
  }

  header nav {
    gap: 0.15rem 0.25rem;
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding-bottom: 0.15rem;
  }

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

  header nav a {
    white-space: nowrap;
    font-size: 0.82rem;
    padding: 0.4rem 0.7rem;
    flex-shrink: 0;
  }

  main {
    padding: 0 0.75rem 2.5rem;
  }

  main > section {
    margin: 1.5rem 0;
    padding: 1.25rem;
    border-radius: var(--radius-md);
  }

  #hero {
    margin-top: 1rem;
    padding: 1.75rem 1.25rem;
    border-radius: var(--radius-lg);
  }

  #hero ul {
    grid-template-columns: 1fr;
    gap: 0.65rem;
  }

  #hero ul li {
    padding: 0.8rem 1rem;
    font-size: 0.88rem;
  }

  h2::after {
    width: 44px;
    height: 3px;
  }

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

  #faq summary {
    padding: 0.95rem 2.75rem 0.95rem 1rem;
    font-size: 0.92rem;
  }

  #howto ol li {
    padding: 0.85rem 1rem 0.85rem 3.1rem;
    font-size: 0.9rem;
  }

  #howto ol li::before {
    left: 0.75rem;
    width: 26px;
    height: 26px;
    font-size: 0.78rem;
  }

  #articles article {
    padding: 1.15rem;
  }

  footer {
    padding: 2rem 0.75rem 1.5rem;
  }

  footer > section {
    padding: 1.15rem;
    margin-bottom: 1rem;
  }

  #contact p {
    font-size: 0.87rem;
    padding: 0.5rem 0.75rem;
  }
}

@media (max-width: 380px) {
  header nav a {
    font-size: 0.76rem;
    padding: 0.35rem 0.55rem;
  }

  main > section {
    padding: 1rem;
  }
}

/* ============ ACCESSIBILITY ============ */
@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;
  }
}

/* ============ PRINT ============ */
@media print {
  header,
  footer,
  #hero [aria-label="Banner轮播"] {
    display: none;
  }

  body {
    background: #ffffff;
    color: #000000;
  }

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