:root {
  --clay-900: #3d2a1e;
  --clay-800: #4a3223;
  --clay-700: #5c3f2c;
  --clay-600: #6f4c34;
  --clay-500: #8b5e3c;
  --clay-400: #a87850;
  --clay-300: #c79a72;
  --clay-200: #d9a066;
  --clay-100: #f5e6d3;
  --clay-50: #faf3ea;
  --accent: #c96f4a;
  --accent-soft: #e8a87c;
  --sage: #7d8c6f;
  --ink: #2b211a;
  --text: #4a3b30;
  --text-soft: #7a6a5c;
  --bg: #faf6f0;
  --bg-alt: #f2e9dd;
  --card: #ffffff;
  --card-glass: rgba(255, 255, 255, 0.72);
  --border: rgba(139, 94, 60, 0.16);
  --border-strong: rgba(139, 94, 60, 0.3);
  --shadow-sm: 0 2px 8px rgba(61, 42, 30, 0.06);
  --shadow-md: 0 8px 28px rgba(61, 42, 30, 0.1);
  --shadow-lg: 0 18px 50px rgba(61, 42, 30, 0.16);
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-pill: 999px;
  --maxw: 1180px;
  --header-h: 76px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", Georgia, serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f3e9dd;
    --text: #d8cbbc;
    --text-soft: #a8988a;
    --bg: #1a1410;
    --bg-alt: #221a14;
    --card: #251c16;
    --card-glass: rgba(37, 28, 22, 0.68);
    --border: rgba(217, 160, 102, 0.16);
    --border-strong: rgba(217, 160, 102, 0.32);
    --clay-100: #3a2c22;
    --clay-50: #2a201a;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.42);
    --shadow-lg: 0 18px 50px rgba(0, 0, 0, 0.55);
  }
}

*,
*::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: 1.78;
  color: var(--text);
  background: var(--bg);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(217, 160, 102, 0.1), transparent 42%),
    radial-gradient(circle at 88% 4%, rgba(125, 140, 111, 0.09), transparent 38%);
  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(--clay-500);
  text-decoration: none;
  transition: color 0.25s var(--ease), opacity 0.25s var(--ease);
}

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

@media (prefers-color-scheme: dark) {
  a {
    color: var(--clay-200);
  }
  a:hover {
    color: var(--accent-soft);
  }
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--ink);
  line-height: 1.32;
  margin: 0 0 0.6em;
  letter-spacing: 0.01em;
  font-weight: 700;
}

h1 {
  font-size: clamp(1.75rem, 4.2vw, 2.85rem);
  letter-spacing: -0.01em;
}

h2 {
  font-size: clamp(1.4rem, 3vw, 2.05rem);
  position: relative;
  padding-bottom: 0.45em;
}

h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 4px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--clay-500), var(--accent-soft));
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.32rem);
  margin-top: 1.6em;
}

h4 {
  font-size: 1.05rem;
}

p {
  margin: 0 0 1.05em;
}

ul, ol {
  margin: 0 0 1.15em;
  padding-left: 1.4em;
}

li {
  margin-bottom: 0.42em;
}

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

blockquote {
  margin: 1.4em 0;
  padding: 1.15em 1.4em;
  border-left: 4px solid var(--clay-300);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: var(--card-glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  font-style: normal;
  color: var(--text);
}

blockquote p {
  margin: 0;
}

blockquote p::before {
  content: "“";
  font-family: var(--font-serif);
  font-size: 1.6em;
  color: var(--clay-300);
  line-height: 0;
  margin-right: 2px;
}

details {
  margin-bottom: 0.85em;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--card-glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}

details:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}

details[open] {
  border-color: var(--border-strong);
}

summary {
  padding: 1.05em 3em 1.05em 1.3em;
  cursor: pointer;
  font-weight: 600;
  color: var(--ink);
  position: relative;
  list-style: none;
  transition: background 0.3s var(--ease), color 0.3s var(--ease);
  user-select: none;
}

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

summary::after {
  content: "+";
  position: absolute;
  right: 1.2em;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--clay-400);
  transition: transform 0.35s var(--ease), color 0.3s var(--ease);
  line-height: 1;
}

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

summary:hover {
  background: rgba(217, 160, 102, 0.08);
}

details > p,
details > ul,
details > ol {
  padding: 0 1.3em;
  margin-top: 0;
  margin-bottom: 1.1em;
  animation: fadeSlide 0.4s var(--ease);
}

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

.skip-link,
body > a[href="#main-content"] {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 999;
  padding: 0.7em 1.3em;
  background: var(--clay-500);
  color: #fff;
  border-radius: var(--radius-pill);
  font-weight: 600;
  box-shadow: var(--shadow-md);
  transition: top 0.3s var(--ease);
}

body > a[href="#main-content"]:focus {
  top: 12px;
  color: #fff;
}

header[role="banner"] {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--card-glass);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  backdrop-filter: blur(18px) saturate(150%);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 24px rgba(61, 42, 30, 0.05);
}

header[role="banner"] > div {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0.7rem clamp(1rem, 3vw, 2rem);
  display: flex;
  align-items: center;
  gap: clamp(0.6rem, 1.6vw, 1.4rem);
  flex-wrap: wrap;
  min-height: var(--header-h);
}

header[role="banner"] > div > a[href="https://dxkdcm.com/"] {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-serif);
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.04em;
  flex-shrink: 0;
  transition: transform 0.35s var(--ease);
}

header[role="banner"] > div > a[href="https://dxkdcm.com/"]:hover {
  transform: translateY(-1px);
}

header[role="banner"] > div > a[href="https://dxkdcm.com/"] svg {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  box-shadow: 0 4px 14px rgba(139, 94, 60, 0.32);
  transition: transform 0.5s var(--ease), box-shadow 0.4s var(--ease);
}

header[role="banner"] > div > a[href="https://dxkdcm.com/"]:hover svg {
  transform: rotate(-8deg) scale(1.05);
  box-shadow: 0 6px 20px rgba(139, 94, 60, 0.42);
}

header nav[aria-label="主导航"] {
  flex: 1 1 auto;
  min-width: 0;
}

header nav[aria-label="主导航"] ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.35rem;
  list-style: none;
  margin: 0;
  padding: 0;
  justify-content: center;
}

header nav[aria-label="主导航"] li {
  margin: 0;
}

header nav[aria-label="主导航"] a {
  display: inline-block;
  padding: 0.42em 0.72em;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  color: var(--text);
  font-weight: 500;
  position: relative;
  transition: background 0.28s var(--ease), color 0.28s var(--ease), transform 0.28s var(--ease);
}

header nav[aria-label="主导航"] a:hover,
header nav[aria-label="主导航"] a:focus-visible {
  background: rgba(217, 160, 102, 0.16);
  color: var(--clay-600);
  transform: translateY(-1px);
}

@media (prefers-color-scheme: dark) {
  header nav[aria-label="主导航"] a:hover,
  header nav[aria-label="主导航"] a:focus-visible {
    color: var(--accent-soft);
  }
}

header form[role="search"] {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  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: clamp(120px, 16vw, 190px);
  padding: 0.5em 0.95em;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.55);
  color: var(--text);
  font-size: 0.86rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.3s var(--ease), width 0.3s var(--ease);
}

@media (prefers-color-scheme: dark) {
  header form[role="search"] input[type="search"] {
    background: rgba(0, 0, 0, 0.28);
  }
}

header form[role="search"] input[type="search"]:focus {
  border-color: var(--clay-300);
  box-shadow: 0 0 0 3px rgba(217, 160, 102, 0.22);
  background: var(--card);
  width: clamp(150px, 20vw, 220px);
}

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

header form[role="search"] button[type="submit"] {
  padding: 0.5em 1.05em;
  border: none;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--clay-500), var(--clay-400));
  color: #fff;
  font-size: 0.86rem;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease), filter 0.28s var(--ease);
  white-space: nowrap;
}

header form[role="search"] button[type="submit"]:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(139, 94, 60, 0.34);
  filter: brightness(1.05);
}

header > div > button {
  padding: 0.48em 0.95em;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--text);
  font-size: 0.84rem;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.28s var(--ease), color 0.28s var(--ease), transform 0.28s var(--ease), border-color 0.28s var(--ease);
}

header > div > button:hover {
  background: rgba(217, 160, 102, 0.16);
  border-color: var(--clay-400);
  transform: translateY(-1px);
}

header > div > button[aria-label="打开移动菜单"] {
  display: none;
}

main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 clamp(1rem, 3vw, 2rem) 3rem;
}

main > section {
  margin: clamp(2rem, 5vw, 3.5rem) 0;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

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

main > section:not(:first-of-type) {
  padding: clamp(1.4rem, 3.5vw, 2.6rem);
  border-radius: var(--radius-lg);
  background: var(--card-glass);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.4s var(--ease), border-color 0.4s var(--ease);
}

main > section:not(:first-of-type):hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

main > section[aria-labelledby="hero-title"] {
  position: relative;
  margin-top: clamp(1.2rem, 3vw, 2rem);
  padding: clamp(1.8rem, 5vw, 3.6rem) clamp(1.3rem, 4vw, 3rem);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(139, 94, 60, 0.94) 0%, rgba(201, 111, 74, 0.88) 48%, rgba(125, 140, 111, 0.9) 100%),
    radial-gradient(circle at 18% 22%, rgba(245, 230, 211, 0.5), transparent 55%),
    radial-gradient(circle at 82% 78%, rgba(217, 160, 102, 0.55), transparent 52%);
  background-blend-mode: normal, screen, screen;
  color: var(--clay-50);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  isolation: isolate;
}

main > section[aria-labelledby="hero-title"]::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 25% 30%, rgba(255, 255, 255, 0.18), transparent 30%),
    radial-gradient(circle at 78% 20%, rgba(255, 255, 255, 0.12), transparent 26%),
    radial-gradient(circle at 60% 85%, rgba(255, 255, 255, 0.1), transparent 32%);
  pointer-events: none;
  z-index: -1;
}

main > section[aria-labelledby="hero-title"]::after {
  content: "";
  position: absolute;
  width: 340px;
  height: 340px;
  right: -120px;
  top: -120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245, 230, 211, 0.28), transparent 68%);
  pointer-events: none;
  z-index: -1;
  animation: floatBlob 14s ease-in-out infinite alternate;
}

@keyframes floatBlob {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(-26px, 24px) scale(1.12); }
}

main > section[aria-labelledby="hero-title"] h1 {
  color: #fff;
  text-shadow: 0 2px 18px rgba(61, 42, 30, 0.28);
  max-width: 22ch;
}

main > section[aria-labelledby="hero-title"] > p {
  color: rgba(255, 250, 244, 0.94);
  max-width: 68ch;
  font-size: clamp(0.95rem, 1.6vw, 1.06rem);
  text-shadow: 0 1px 8px rgba(61, 42, 30, 0.22);
}

main > section[aria-labelledby="hero-title"] > div {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.6rem;
}

main > section[aria-labelledby="hero-title"] > div a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.78em 1.7em;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.3s var(--ease), color 0.3s var(--ease);
}

main > section[aria-labelledby="hero-title"] > div a:first-child {
  background: #fff;
  color: var(--clay-600);
  box-shadow: 0 8px 24px rgba(61, 42, 30, 0.28);
}

main > section[aria-labelledby="hero-title"] > div a:first-child:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 34px rgba(61, 42, 30, 0.36);
  color: var(--clay-700);
}

main > section[aria-labelledby="hero-title"] > div a:last-child {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.6);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

main > section[aria-labelledby="hero-title"] > div a:last-child:hover {
  background: rgba(255, 255, 255, 0.28);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(61, 42, 30, 0.3);
}

main > section[aria-labelledby="hero-title"] section[aria-label="品牌数据概览"] {
  margin-top: clamp(1.8rem, 4vw, 2.6rem);
}

main > section[aria-labelledby="hero-title"] section[aria-label="品牌数据概览"] ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(0.6rem, 1.6vw, 1.1rem);
}

main > section[aria-labelledby="hero-title"] section[aria-label="品牌数据概览"] li {
  margin: 0;
  padding: 1rem 0.9rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.28);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  color: rgba(255, 250, 244, 0.9);
  font-size: 0.84rem;
  text-align: center;
  line-height: 1.5;
  transition: transform 0.35s var(--ease), background 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

main > section[aria-labelledby="hero-title"] section[aria-label="品牌数据概览"] li:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.22);
  box-shadow: 0 10px 26px rgba(61, 42, 30, 0.26);
}

main > section[aria-labelledby="hero-title"] section[aria-label="品牌数据概览"] strong {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  color: #fff;
  line-height: 1.2;
  margin-bottom: 0.15em;
  letter-spacing: 0.01em;
}

nav[aria-label="面包屑导航"] ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin: 0;
  padding: 0.6rem 0;
  font-size: 0.84rem;
  color: var(--text-soft);
}

nav[aria-label="面包屑导航"] li {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

nav[aria-label="面包屑导航"] li + li::before {
  content: "/";
  color: var(--clay-300);
  opacity: 0.7;
}

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

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

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

#brand ul,
#products ul,
#solutions ul,
#howto ul,
#howto ol,
#team ul,
#contact ul,
#sitemap ul,
#links ul,
#news ul,
#articles > article {
  position: relative;
}

#brand ul,
#products ul,
#solutions ul {
  list-style: none;
  padding-left: 0;
}

#brand ul li,
#products ul li,
#solutions ul li {
  position: relative;
  padding: 0.7em 1em 0.7em 2.4em;
  margin-bottom: 0.55em;
  border-radius: var(--radius-sm);
  background: rgba(217, 160, 102, 0.07);
  border: 1px solid var(--border);
  transition: transform 0.3s var(--ease), background 0.3s var(--ease), border-color 0.3s var(--ease);
}

#brand ul li::before,
#products ul li::before,
#solutions ul li::before {
  content: "";
  position: absolute;
  left: 1em;
  top: 1.15em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clay-400), var(--accent-soft));
  box-shadow: 0 0 0 3px rgba(217, 160, 102, 0.18);
}

#brand ul li:hover,
#products ul li:hover,
#solutions ul li:hover {
  transform: translateX(4px);
  background: rgba(217, 160, 102, 0.13);
  border-color: var(--border-strong);
}

#products h3,
#solutions h3,
#cases h3,
#team h3,
#contact h3 {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

#products h3::before,
#solutions h3::before,
#cases h3::before,
#team h3::before,
#contact h3::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--clay-500), var(--accent-soft));
  flex-shrink: 0;
  transform: rotate(45deg);
}

#cases blockquote {
  position: relative;
  padding-left: 1.8em;
}

#cases blockquote:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

#news ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: clamp(0.9rem, 2vw, 1.4rem);
}

#news li {
  margin: 0;
  padding: 1.2rem 1.3rem;
  border-radius: var(--radius-md);
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

#news li:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

#news li h3 {
  margin-top: 0;
  font-size: 1.05rem;
  line-height: 1.45;
}

#news li p {
  margin-bottom: 0.5em;
  font-size: 0.92rem;
}

#news li p:first-of-type {
  font-size: 0.8rem;
  color: var(--text-soft);
  font-weight: 600;
  letter-spacing: 0.02em;
  display: inline-block;
  padding: 0.15em 0.7em;
  border-radius: var(--radius-pill);
  background: rgba(217, 160, 102, 0.14);
  margin-bottom: 0.7em;
}

#news li p:last-child {
  margin-bottom: 0;
  color: var(--text);
}

#articles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: clamp(1rem, 2.4vw, 1.6rem);
  align-items: start;
}

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

#articles > article {
  margin: 0;
  padding: 1.35rem 1.4rem 1.5rem;
  border-radius: var(--radius-md);
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color 0.4s var(--ease);
  position: relative;
  overflow: hidden;
}

#articles > article::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--clay-500), var(--accent-soft), var(--sage));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease);
}

#articles > article:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-strong);
}

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

#articles > article h3 {
  margin-top: 0;
  font-size: 1.06rem;
  line-height: 1.5;
}

#articles > article h3 a {
  color: var(--ink);
}

#articles > article p {
  font-size: 0.92rem;
}

#articles > article p:nth-of-type(1) {
  font-size: 0.78rem;
  color: var(--text-soft);
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-bottom: 0.6em;
  text-transform: uppercase;
}

#articles > article p:nth-of-type(2) {
  color: var(--text);
  flex: 1;
}

#articles > article > a {
  align-self: flex-start;
  margin-top: 0.4rem;
  padding: 0.5em 1.15em;
  border-radius: var(--radius-pill);
  background: rgba(139, 94, 60, 0.1);
  color: var(--clay-600);
  font-size: 0.86rem;
  font-weight: 700;
  transition: background 0.3s var(--ease), color 0.3s var(--ease), transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

#articles > article > a::after {
  content: " →";
  transition: margin-left 0.3s var(--ease);
}

#articles > article > a:hover {
  background: linear-gradient(135deg, var(--clay-500), var(--accent));
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(139, 94, 60, 0.3);
}

#articles > article > a:hover::after {
  margin-left: 4px;
}

@media (prefers-color-scheme: dark) {
  #articles > article > a {
    background: rgba(217, 160, 102, 0.14);
    color: var(--accent-soft);
  }
  #articles > article > a:hover {
    color: #fff;
  }
}

#faq {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 0.85rem;
  align-items: start;
}

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

#faq details {
  margin-bottom: 0;
}

#howto ol {
  counter-reset: howto-step;
  list-style: none;
  padding-left: 0;
}

#howto ol li {
  counter-increment: howto-step;
  position: relative;
  padding: 0.85em 1.1em 0.85em 3.4em;
  margin-bottom: 0.6em;
  border-radius: var(--radius-sm);
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

#howto ol li::before {
  content: counter(howto-step);
  position: absolute;
  left: 0.85em;
  top: 50%;
  transform: translateY(-50%);
  width: 1.85em;
  height: 1.85em;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clay-500), var(--accent-soft));
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  box-shadow: 0 4px 12px rgba(139, 94, 60, 0.28);
}

#howto ol li:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

#howto ul {
  list-style: none;
  padding-left: 0;
}

#howto ul li {
  position: relative;
  padding: 0.45em 0.8em 0.45em 1.9em;
  margin-bottom: 0.3em;
  border-radius: var(--radius-sm);
  transition: background 0.3s var(--ease);
}

#howto ul li::before {
  content: "✓";
  position: absolute;
  left: 0.55em;
  top: 0.45em;
  color: var(--sage);
  font-weight: 700;
  font-size: 0.9em;
}

#howto ul li:hover {
  background: rgba(125, 140, 111, 0.1);
}

#howto h3:nth-of-type(4) + ul li::before,
#howto h3:nth-of-type(5) + ul li::before {
  content: "✕";
  color: var(--accent);
}

#team ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.85rem;
}

#team li {
  margin: 0;
  padding: 1.1rem 1.2rem;
  border-radius: var(--radius-md);
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  line-height: 1.7;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

#team li:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

#team li strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.08rem;
  margin-bottom: 0.2em;
  color: var(--clay-600);
}

@media (prefers-color-scheme: dark) {
  #team li strong {
    color: var(--accent-soft);
  }
}

#contact ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 0.7rem;
}

#contact li {
  margin: 0;
  padding: 0.8em 1.1em;
  border-radius: var(--radius-sm);
  background: rgba(217, 160, 102, 0.08);
  border: 1px solid var(--border);
  font-size: 0.94rem;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease), transform 0.3s var(--ease);
  word-break: break-word;
}

#contact li:hover {
  background: rgba(217, 160, 102, 0.15);
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

#sitemap ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

#sitemap li {
  margin: 0;
}

#sitemap a {
  display: inline-block;
  padding: 0.42em 1em;
  border-radius: var(--radius-pill);
  background: var(--card);
  border: 1px solid var(--border);
  font-size: 0.88rem;
  color: var(--text);
  transition: background 0.28s var(--ease), color 0.28s var(--ease), border-color 0.28s var(--ease), transform 0.28s var(--ease), box-shadow 0.28s var(--ease);
}

#sitemap a:hover {
  background: linear-gradient(135deg, var(--clay-500), var(--clay-400));
  color: #fff;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(139, 94, 60, 0.28);
}

#links ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

#links li {
  margin: 0;
}

#links a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5em 1.1em;
  border-radius: var(--radius-pill);
  background: var(--card);
  border: 1px dashed var(--border-strong);
  font-size: 0.88rem;
  color: var(--text-soft);
  transition: color 0.28s var(--ease), border-color 0.28s var(--ease), transform 0.28s var(--ease), background 0.28s var(--ease);
}

#links a::before {
  content: "↗";
  font-size: 0.85em;
  opacity: 0.6;
}

#links a:hover {
  color: var(--accent);
  border-color: var(--accent-soft);
  background: rgba(217, 160, 102, 0.1);
  transform: translateY(-2px);
}

#privacy p,
#disclaimer p {
  font-size: 0.94rem;
  color: var(--text-soft);
  max-width: 80ch;
}

footer[role="contentinfo"] {
  margin-top: 2rem;
  background:
    linear-gradient(160deg, var(--clay-800) 0%, var(--clay-700) 55%, var(--clay-600) 100%);
  color: rgba(245, 230, 211, 0.82);
  position: relative;
  overflow: hidden;
}

footer[role="contentinfo"]::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(217, 160, 102, 0.22), transparent 68%);
  pointer-events: none;
}

footer[role="contentinfo"] > div {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(2rem, 4vw, 3rem) clamp(1rem, 3vw, 2rem);
  position: relative;
  z-index: 1;
}

footer[role="contentinfo"] p {
  margin: 0 0 0.7em;
  font-size: 0.9rem;
  line-height: 1.75;
}

footer[role="contentinfo"] p:first-child {
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.02em;
  margin-bottom: 0.9em;
}

footer[role="contentinfo"] p:last-child {
  margin-bottom: 0;
  margin-top: 1.2em;
  padding-top: 1.2em;
  border-top: 1px solid rgba(245, 230, 211, 0.18);
  font-size: 0.84rem;
}

footer[role="contentinfo"] a {
  color: var(--clay-100);
  font-weight: 500;
  border-bottom: 1px solid transparent;
  transition: color 0.28s var(--ease), border-color 0.28s var(--ease);
}

footer[role="contentinfo"] a:hover {
  color: #fff;
  border-bottom-color: rgba(255, 255, 255, 0.55);
}

body > button[aria-label="返回顶部"] {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 90;
  width: 50px;
  height: 50px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clay-500), var(--accent));
  color: #fff;
  font-size: 0;
  cursor: pointer;
  box-shadow: 0 10px 26px rgba(139, 94, 60, 0.4);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), filter 0.35s var(--ease);
  display: flex;
  align-items: center;
  justify-content: center;
}

body > button[aria-label="返回顶部"]::before {
  content: "↑";
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1;
}

body > button[aria-label="返回顶部"]:hover {
  transform: translateY(-4px) scale(1.06);
  box-shadow: 0 16px 36px rgba(139, 94, 60, 0.5);
  filter: brightness(1.08);
}

body > button[aria-label="返回顶部"]:active {
  transform: translateY(-1px) scale(0.98);
}

:focus-visible {
  outline: 2.5px solid var(--accent-soft);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: rgba(217, 160, 102, 0.35);
  color: var(--ink);
}

main > section {
  animation: riseIn 0.7s var(--ease) both;
}

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: 0.1s; }
main > section:nth-of-type(4) { animation-delay: 0.14s; }
main > section:nth-of-type(5) { animation-delay: 0.18s; }

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

@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 (max-width: 1080px) {
  header nav[aria-label="主导航"] a {
    padding: 0.4em 0.55em;
    font-size: 0.85rem;
  }
  main > section[aria-labelledby="hero-title"] section[aria-label="品牌数据概览"] ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  :root {
    --header-h: 64px;
  }

  header[role="banner"] > div {
    gap: 0.5rem;
    padding: 0.55rem 1rem;
  }

  header nav[aria-label="主导航"] {
    order: 5;
    flex-basis: 100%;
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  header nav[aria-label="主导航"]::-webkit-scrollbar {
    display: none;
  }

  header nav[aria-label="主导航"] ul {
    flex-wrap: nowrap;
    justify-content: flex-start;
    gap: 0.2rem;
    padding-bottom: 0.15rem;
  }

  header nav[aria-label="主导航"] a {
    white-space: nowrap;
    font-size: 0.84rem;
  }

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

  header form[role="search"] input[type="search"] {
    width: 110px;
  }

  header form[role="search"] input[type="search"]:focus {
    width: 140px;
  }

  header > div > button[aria-label="切换暗黑模式"] {
    display: none;
  }

  header > div > button[aria-label="打开移动菜单"] {
    display: inline-block;
  }

  #faq {
    grid-template-columns: 1fr;
  }

  #articles {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
    line-height: 1.74;
  }

  header[role="banner"] > div > a[href="https://dxkdcm.com/"] {
    font-size: 1.08rem;
  }

  header[role="banner"] > div > a[href="https://dxkdcm.com/"] svg {
    width: 34px;
    height: 34px;
  }

  header form[role="search"] {
    order: 6;
    flex-basis: 100%;
    width: 100%;
    margin-left: 0;
  }

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

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

  main {
    padding: 0 0.9rem 2rem;
  }

  main > section {
    margin: 1.6rem 0;
  }

  main > section:not(:first-of-type) {
    padding: 1.15rem 1rem;
    border-radius: var(--radius-md);
  }

  main > section[aria-labelledby="hero-title"] {
    padding: 1.5rem 1.1rem;
    border-radius: var(--radius-md);
  }

  main > section[aria-labelledby="hero-title"] h1 {
    font-size: 1.55rem;
    max-width: none;
  }

  main > section[aria-labelledby="hero-title"] > div {
    flex-direction: column;
    gap: 0.6rem;
  }

  main > section[aria-labelledby="hero-title"] > div a {
    width: 100%;
    padding: 0.78em 1.2em;
  }

  main > section[aria-labelledby="hero-title"] section[aria-label="品牌数据概览"] ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.55rem;
  }

  main > section[aria-labelledby="hero-title"] section[aria-label="品牌数据概览"] li {
    padding: 0.8rem 0.5rem;
    font-size: 0.78rem;
  }

  #news ul,
  #team ul,
  #contact ul {
    grid-template-columns: 1fr;
  }

  #articles {
    grid-template-columns: 1fr;
    gap: 0.9rem;
  }

  #articles > article {
    padding: 1.1rem 1.05rem 1.2rem;
  }

  #howto ol li {
    padding: 0.75em 0.9em 0.75em 3em;
  }

  summary {
    padding: 0.9em 2.6em 0.9em 1em;
    font-size: 0.95rem;
  }

  details > p,
  details > ul,
  details > ol {
    padding: 0 1em;
  }

  body > button[aria-label="返回顶部"] {
    width: 44px;
    height: 44px;
    right: 0.9rem;
    bottom: 0.9rem;
  }

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

@media (hover: none) {
  main > section[aria-labelledby="hero-title"] section[aria-label="品牌数据概览"] li:hover,
  #news li:hover,
  #articles > article:hover,
  #team li:hover,
  #contact li:hover,
  #sitemap a:hover,
  #links a:hover,
  body > button[aria-label="返回顶部"]:hover {
    transform: none;
  }
}

@media print {
  header[role="banner"],
  footer[role="contentinfo"],
  body > button[aria-label="返回顶部"],
  main > section[aria-labelledby="hero-title"]::after {
    display: none;
  }
  body {
    background: #fff;
    color: #000;
  }
  main > section:not(:first-of-type) {
    box-shadow: none;
    border: 1px solid #ccc;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    background: #fff;
  }
  a {
    color: #000;
    text-decoration: underline;
  }
}