:root {
  --pink-50: #fff0f6;
  --pink-100: #ffe0ec;
  --pink-200: #f8bbd0;
  --pink-300: #f48fb1;
  --pink-400: #ec6fa0;
  --pink-500: #e0508a;
  --pink-600: #c93d74;
  --purple-100: #f3e5f5;
  --purple-200: #e1bee7;
  --purple-300: #ce93d8;
  --purple-400: #b06fd0;
  --blue-100: #e1f5fe;
  --blue-200: #b3e5fc;
  --green-100: #f1f8e9;
  --green-200: #dcedc8;
  --yellow-100: #fff8e1;
  --text-strong: #3a2230;
  --text-body: #5a4450;
  --text-muted: #8a7480;
  --bg-page: #fff7fb;
  --bg-card: #ffffff;
  --bg-soft: #fdf1f7;
  --border-soft: rgba(244, 143, 177, 0.28);
  --shadow-sm: 0 2px 8px rgba(224, 80, 138, 0.08);
  --shadow-md: 0 8px 24px rgba(224, 80, 138, 0.12);
  --shadow-lg: 0 16px 48px rgba(201, 61, 116, 0.16);
  --glass-bg: rgba(255, 255, 255, 0.62);
  --glass-border: rgba(255, 255, 255, 0.55);
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-pill: 999px;
  --grad-main: linear-gradient(135deg, #ffd1e3 0%, #f8bbd0 28%, #ce93d8 68%, #b3e5fc 100%);
  --grad-main-deep: linear-gradient(135deg, #f48fb1 0%, #ce93d8 55%, #90caf9 100%);
  --grad-btn: linear-gradient(135deg, #f06292 0%, #ba68c8 100%);
  --grad-btn-hover: linear-gradient(135deg, #ec407a 0%, #ab47bc 100%);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --nav-height: 84px;
}

html[data-theme="dark"],
body.dark-mode {
  --text-strong: #f6e8ef;
  --text-body: #d9c3cf;
  --text-muted: #a58b99;
  --bg-page: #171018;
  --bg-card: #221826;
  --bg-soft: #2b1e30;
  --border-soft: rgba(206, 147, 216, 0.24);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.6);
  --glass-bg: rgba(34, 24, 38, 0.62);
  --glass-border: rgba(206, 147, 216, 0.22);
  --grad-main: linear-gradient(135deg, #4a2b3d 0%, #5c3359 45%, #2f3d55 100%);
  --grad-main-deep: linear-gradient(135deg, #7a3a5c 0%, #6a3f7a 55%, #34506e 100%);
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-body);
  background-color: var(--bg-page);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(244, 143, 177, 0.16), transparent 42%),
    radial-gradient(circle at 88% 4%, rgba(206, 147, 216, 0.16), transparent 40%),
    radial-gradient(circle at 50% 100%, rgba(179, 229, 252, 0.14), transparent 46%);
  background-attachment: fixed;
  transition: background-color 0.35s var(--ease-out), color 0.35s var(--ease-out);
  overflow-x: hidden;
}

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

a {
  color: var(--pink-500);
  text-decoration: none;
  transition: color 0.25s var(--ease-out), opacity 0.25s var(--ease-out);
}

a:hover,
a:focus-visible {
  color: var(--pink-600);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(240, 98, 146, 0.55);
  outline-offset: 2px;
  border-radius: 6px;
}

h1, h2, h3, h4 {
  color: var(--text-strong);
  line-height: 1.35;
  margin: 0 0 0.6em;
  font-weight: 700;
  letter-spacing: 0.01em;
}

h1 {
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  background: var(--grad-main-deep);
  -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: 6px;
  background: var(--grad-btn);
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
}

h4 {
  font-size: 1.05rem;
  color: var(--pink-500);
}

p {
  margin: 0 0 1em;
}

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

li {
  margin-bottom: 0.4em;
}

strong {
  color: var(--pink-600);
  font-weight: 700;
}

blockquote {
  margin: 1.2em 0;
  padding: 18px 22px;
  border-left: 4px solid var(--pink-300);
  background: var(--glass-bg);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  color: var(--text-body);
  font-style: normal;
}

blockquote p {
  margin: 0;
}

time {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--text-muted);
  background: var(--bg-soft);
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.02em;
}

header[role="banner"] {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
  transition: background 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
}

.top-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  padding: 6px clamp(16px, 4vw, 48px);
  font-size: 0.78rem;
  color: #fff;
  background: var(--grad-main-deep);
  letter-spacing: 0.03em;
}

.top-bar span {
  opacity: 0.95;
}

nav[aria-label="主导航"] {
  display: flex;
  align-items: center;
  gap: 18px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 10px clamp(16px, 4vw, 48px);
  min-height: var(--nav-height);
}

.logo a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-strong);
  letter-spacing: 0.04em;
}

.logo a:hover {
  color: var(--pink-500);
}

.logo svg {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  box-shadow: 0 4px 14px rgba(244, 143, 177, 0.45);
  transition: transform 0.4s var(--ease-out);
}

.logo a:hover svg {
  transform: rotate(-8deg) scale(1.06);
}

nav[aria-label="主导航"] > ul {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 6px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1 1 auto;
}

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

nav[aria-label="主导航"] > ul a {
  display: inline-block;
  padding: 7px 13px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  color: var(--text-body);
  font-weight: 500;
  white-space: nowrap;
  position: relative;
  transition: color 0.25s var(--ease-out), background 0.25s var(--ease-out), transform 0.25s var(--ease-out);
}

nav[aria-label="主导航"] > ul a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-btn);
  transform: translateX(-50%);
  transition: width 0.3s var(--ease-out);
}

nav[aria-label="主导航"] > ul a:hover,
nav[aria-label="主导航"] > ul a:focus-visible {
  color: var(--pink-600);
  background: rgba(244, 143, 177, 0.12);
  transform: translateY(-1px);
}

nav[aria-label="主导航"] > ul a:hover::after {
  width: 60%;
}

.nav-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.nav-tools form {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-pill);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s var(--ease-out), border-color 0.25s var(--ease-out);
}

.nav-tools form:focus-within {
  border-color: var(--pink-300);
  box-shadow: 0 0 0 4px rgba(244, 143, 177, 0.18);
}

.nav-tools input[type="search"] {
  border: 0;
  background: transparent;
  padding: 8px 14px;
  font-size: 0.85rem;
  font-family: inherit;
  color: var(--text-body);
  width: 170px;
  min-width: 0;
  outline: none;
}

.nav-tools input[type="search"]::placeholder {
  color: var(--text-muted);
}

.nav-tools form button {
  border: 0;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-family: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--grad-btn);
  cursor: pointer;
  transition: filter 0.25s var(--ease-out);
}

.nav-tools form button:hover {
  filter: brightness(1.08);
}

#themeToggle,
#menuToggle {
  border: 1px solid var(--border-soft);
  background: var(--bg-card);
  color: var(--text-body);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), background 0.3s var(--ease-out);
}

#themeToggle:hover,
#menuToggle:hover {
  transform: translateY(-2px) rotate(6deg);
  box-shadow: var(--shadow-md);
}

#menuToggle {
  display: none;
}

main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 48px) 64px;
}

nav[aria-label="面包屑导航"] ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin: 20px 0 8px;
  padding: 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}

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

nav[aria-label="面包屑导航"] li + li::before {
  content: "›";
  margin: 0 8px;
  color: var(--pink-300);
}

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

section {
  margin: 0 0 56px;
  padding: clamp(20px, 3.4vw, 40px);
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: box-shadow 0.4s var(--ease-out), transform 0.4s var(--ease-out), background 0.35s var(--ease-out);
}

section::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.35), transparent 40%);
  opacity: 0.5;
}

html[data-theme="dark"] section::after,
body.dark-mode section::after {
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.05), transparent 40%);
}

section:hover {
  box-shadow: var(--shadow-md);
}

section > * {
  position: relative;
  z-index: 1;
}

#hero {
  background: var(--grad-main);
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: var(--shadow-lg);
  padding: clamp(24px, 4vw, 52px);
  margin-top: 12px;
  isolation: isolate;
}

#hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 22%, rgba(255, 255, 255, 0.5), transparent 34%),
    radial-gradient(circle at 82% 78%, rgba(255, 255, 255, 0.35), transparent 38%);
  z-index: -1;
}

#hero h1 {
  background: linear-gradient(120deg, #8e2a56 0%, #9c27b0 55%, #1565c0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  text-shadow: none;
}

html[data-theme="dark"] #hero h1,
body.dark-mode #hero h1 {
  background: linear-gradient(120deg, #ffc1da 0%, #e3b8f0 55%, #b8dcf5 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

#hero > p {
  max-width: 900px;
  color: var(--text-strong);
  font-size: 1rem;
  line-height: 1.85;
  background: rgba(255, 255, 255, 0.42);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.5);
}

html[data-theme="dark"] #hero > p,
body.dark-mode #hero > p {
  background: rgba(30, 20, 34, 0.42);
  border-color: rgba(206, 147, 216, 0.25);
  color: var(--text-body);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 22px 0 30px;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 30px;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), background 0.3s var(--ease-out), color 0.3s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  color: #fff;
  background: var(--grad-btn);
  box-shadow: 0 8px 22px rgba(224, 80, 138, 0.35);
}

.btn-primary::after {
  content: "";
  position: absolute;
  top: 0;
  left: -60%;
  width: 40%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.55), transparent);
  transform: skewX(-20deg);
  transition: left 0.6s var(--ease-out);
}

.btn-primary:hover {
  background: var(--grad-btn-hover);
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(224, 80, 138, 0.45);
  color: #fff;
}

.btn-primary:hover::after {
  left: 130%;
}

.btn-secondary {
  color: var(--pink-600);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: #fff;
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  color: var(--pink-600);
}

html[data-theme="dark"] .btn-secondary,
body.dark-mode .btn-secondary {
  background: rgba(60, 40, 66, 0.7);
  border-color: rgba(206, 147, 216, 0.3);
  color: #f8bbd0;
}

.banner-carousel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  margin: 8px 0 30px;
}

.banner-carousel figure {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-card);
  box-shadow: var(--shadow-md);
  transition: transform 0.45s var(--ease-out), box-shadow 0.45s var(--ease-out);
  position: relative;
}

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

.banner-carousel svg {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s var(--ease-out);
}

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

.banner-carousel figcaption {
  padding: 10px 16px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-strong);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid var(--glass-border);
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px;
  margin-top: 8px;
}

.stats > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 20px 12px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out), background 0.35s var(--ease-out);
}

.stats > div:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.78);
}

html[data-theme="dark"] .stats > div,
body.dark-mode .stats > div {
  background: rgba(40, 28, 46, 0.6);
  border-color: rgba(206, 147, 216, 0.25);
}

.stats strong {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  background: var(--grad-btn);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.stats span {
  font-size: 0.82rem;
  color: var(--text-body);
  font-weight: 500;
}

#about p,
#services p,
#scenes p,
#solutions p,
#cases p,
#howto p {
  max-width: 960px;
}

#products h3,
#services h3,
#scenes h3,
#solutions h3,
#cases h3,
#howto h3 {
  margin-top: 1.6em;
  padding-bottom: 8px;
  border-bottom: 2px dashed var(--border-soft);
}

#products h4,
#services h4,
#howto h4 {
  margin-top: 1.2em;
}

#cases blockquote {
  position: relative;
  padding-left: 52px;
}

#cases blockquote::before {
  content: "“";
  position: absolute;
  left: 16px;
  top: 2px;
  font-size: 2.6rem;
  line-height: 1;
  color: var(--pink-300);
  font-family: Georgia, serif;
}

#news article,
#articles article {
  padding: 20px 22px;
  margin: 0 0 16px;
  border-radius: var(--radius-md);
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out), border-color 0.35s var(--ease-out);
  position: relative;
}

#news article::before,
#articles article::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 4px;
  border-radius: 4px;
  background: var(--grad-btn);
  opacity: 0;
  transition: opacity 0.3s var(--ease-out);
}

#news article:hover,
#articles article:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  border-color: var(--pink-200);
}

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

#news article h3,
#articles article h3 {
  margin: 0 0 6px;
  font-size: 1.08rem;
}

#news article p,
#articles article p {
  margin: 0 0 8px;
  font-size: 0.92rem;
}

#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 5px 16px;
  border-radius: var(--radius-pill);
  background: rgba(244, 143, 177, 0.14);
  transition: background 0.25s var(--ease-out), color 0.25s var(--ease-out), transform 0.25s var(--ease-out);
}

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

#articles article a:hover {
  background: var(--grad-btn);
  color: #fff;
  transform: translateY(-1px);
}

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

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-list details {
  border-radius: var(--radius-md);
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
  overflow: hidden;
  transition: box-shadow 0.3s var(--ease-out), border-color 0.3s var(--ease-out), background 0.3s var(--ease-out);
}

.faq-list details[open] {
  box-shadow: var(--shadow-md);
  border-color: var(--pink-200);
  background: var(--bg-card);
}

.faq-list details:hover {
  border-color: var(--pink-300);
}

.faq-list summary {
  cursor: pointer;
  list-style: none;
  padding: 16px 50px 16px 20px;
  font-weight: 600;
  font-size: 0.96rem;
  color: var(--text-strong);
  position: relative;
  transition: color 0.25s var(--ease-out), background 0.25s var(--ease-out);
  user-select: none;
}

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

.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--grad-btn);
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1;
  transition: transform 0.35s var(--ease-out);
}

.faq-list details[open] summary::after {
  transform: translateY(-50%) rotate(135deg);
}

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

.faq-list details > p {
  margin: 0;
  padding: 0 20px 18px;
  font-size: 0.92rem;
  color: var(--text-body);
  animation: fadeSlide 0.35s var(--ease-out);
}

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

#howto h4 {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
  border-left: 4px solid var(--pink-300);
  margin: 18px 0 8px;
}

#howto h4 + p {
  margin-left: 6px;
}

#contact address {
  font-style: normal;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin: 18px 0 8px;
}

#contact address p {
  margin: 0;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
  font-size: 0.92rem;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

#contact address p:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

#sitemap ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
}

#sitemap li {
  margin: 0;
}

#sitemap li a {
  display: inline-block;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
  font-size: 0.86rem;
  color: var(--text-body);
  transition: background 0.25s var(--ease-out), color 0.25s var(--ease-out), transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}

#sitemap li a:hover {
  background: var(--grad-btn);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

#legal h3 {
  margin-top: 1.4em;
}

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

footer[role="contentinfo"] {
  background: var(--grad-main-deep);
  color: rgba(255, 255, 255, 0.92);
  padding: 40px clamp(16px, 4vw, 48px) 32px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

footer[role="contentinfo"]::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.18), transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.14), transparent 42%);
  pointer-events: none;
}

footer[role="contentinfo"] p {
  margin: 0 0 8px;
  font-size: 0.86rem;
  position: relative;
}

footer[role="contentinfo"] p:first-child {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
}

footer[role="contentinfo"] a {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 3px;
  opacity: 0.9;
}

footer[role="contentinfo"] a:hover {
  opacity: 1;
  color: #ffe0ec;
}

#backToTop {
  position: fixed;
  right: clamp(16px, 3vw, 32px);
  bottom: clamp(16px, 3vw, 32px);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: var(--pink-600);
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  z-index: 90;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity 0.35s var(--ease-out), transform 0.35s var(--ease-out), visibility 0.35s, background 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

#backToTop.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#backToTop:hover {
  background: var(--grad-btn);
  color: #fff;
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 1080px) {
  nav[aria-label="主导航"] > ul a {
    padding: 6px 9px;
    font-size: 0.84rem;
  }
  .nav-tools input[type="search"] {
    width: 130px;
  }
}

@media (max-width: 900px) {
  :root {
    --nav-height: 72px;
  }
  nav[aria-label="主导航"] {
    flex-wrap: wrap;
    gap: 10px;
  }
  nav[aria-label="主导航"] > ul {
    order: 3;
    flex: 1 1 100%;
    justify-content: center;
    padding-top: 6px;
    border-top: 1px dashed var(--border-soft);
  }
  .nav-tools {
    margin-left: auto;
  }
  #menuToggle {
    display: inline-flex;
  }
  nav[aria-label="主导航"] > ul {
    display: none;
  }
  nav[aria-label="主导航"] > ul.is-open {
    display: flex;
    animation: fadeSlide 0.3s var(--ease-out);
  }
  .nav-tools form input[type="search"] {
    width: 120px;
  }
  .banner-carousel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }
  .top-bar {
    justify-content: center;
    text-align: center;
    font-size: 0.72rem;
    padding: 5px 12px;
  }
  nav[aria-label="主导航"] {
    padding: 8px 14px;
  }
  .logo a {
    font-size: 1.1rem;
  }
  .logo svg {
    width: 36px;
    height: 36px;
  }
  .nav-tools form {
    display: none;
  }
  main {
    padding: 0 14px 48px;
  }
  section {
    border-radius: var(--radius-md);
    margin-bottom: 36px;
    padding: 20px 16px;
  }
  #hero {
    padding: 22px 16px;
  }
  #hero > p {
    padding: 14px;
    font-size: 0.92rem;
  }
  .hero-actions {
    gap: 10px;
  }
  .btn-primary,
  .btn-secondary {
    flex: 1 1 auto;
    padding: 12px 20px;
    font-size: 0.9rem;
  }
  .stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .stats > div {
    padding: 16px 8px;
  }
  #contact address {
    grid-template-columns: 1fr;
  }
  #cases blockquote {
    padding-left: 42px;
  }
  .faq-list summary {
    padding: 14px 46px 14px 16px;
    font-size: 0.9rem;
  }
  .faq-list details > p {
    padding: 0 16px 16px;
  }
  #backToTop {
    width: 42px;
    height: 42px;
    font-size: 1.05rem;
  }
  h2 {
    padding-left: 14px;
  }
  h2::before {
    width: 5px;
  }
}

@media (max-width: 400px) {
  .stats {
    grid-template-columns: 1fr;
  }
  nav[aria-label="主导航"] > ul a {
    padding: 6px 10px;
    font-size: 0.82rem;
  }
}
</style>