/* ==========================================================================
   安徽幸奇科技有限公司 · 企业官网
   设计系统：莱茵蓝（Rhine Blue）+ 液态玻璃（Liquid Glass）
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 莱茵蓝主色阶 */
  --rhine-950: #030f26;
  --rhine-900: #061b3f;
  --rhine-800: #082a60;
  --rhine-700: #0a3c86;
  --rhine-600: #0c50ab;
  --rhine-500: #1166d4; /* 主色 */
  --rhine-400: #3d8bea;
  --rhine-300: #7ab2f4;
  --rhine-200: #b6d3fa;
  --rhine-100: #dceafd;
  --rhine-50: #f0f6ff;

  /* 液态玻璃辅助色 */
  --aqua-400: #35d1f0;
  --aqua-300: #7ce4f7;
  --violet-400: #7b7bf0;

  /* 文本 */
  --text-strong: #071a35;
  --text: #23364f;
  --text-muted: #607490;
  --text-invert: #f2f7ff;
  --text-invert-muted: rgba(226, 238, 255, 0.72);

  /* 背景 */
  --bg: #edf3fb;
  --bg-soft: #f7fafe;

  /* 科技元素平铺底图 */
  --tech-pattern: url("../img/tech-pattern.svg");
  --tech-pattern-color: 147, 165, 187;   /* 灰 #93A5BB */
  --tech-pattern-opacity: 0.3;           /* 整体透明度：30% */
  --tech-pattern-size: 160px;            /* 花纹平铺尺寸 */
  --tech-dot-size: 32px;                 /* 点阵间距 */

  /* 玻璃材质 */
  --glass-bg: rgba(255, 255, 255, 0.55);
  --glass-bg-strong: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.75);
  --glass-shadow: 0 18px 50px -18px rgba(9, 42, 96, 0.35);
  --glass-blur: 22px;

  --glass-dark-bg: rgba(9, 32, 71, 0.42);
  --glass-dark-border: rgba(150, 196, 255, 0.28);

  /* 圆角与节奏 */
  --r-sm: 12px;
  --r-md: 18px;
  --r-lg: 26px;
  --r-xl: 34px;
  --r-full: 999px;

  /* 内容宽度：随窗口流式增长，超宽屏封顶 */
  --container: 1180px;        /* 基准内容宽度（≤1440px 窗口时的表现） */
  --container-fluid: 82vw;    /* 随窗口宽度增长的比例 */
  --container-max: 1920px;    /* 超宽屏内容宽度上限 */
  --nav-h: 74px;

  --ease: cubic-bezier(0.22, 0.68, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Hiragino Sans GB",
    "Source Han Sans SC", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* ---------- 2. 基础重置 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font-family: inherit;
  font-size: inherit;
}

::selection {
  background: rgba(17, 102, 212, 0.22);
}

h1, h2, h3, h4 {
  margin: 0;
  color: var(--text-strong);
  line-height: 1.22;
  font-weight: 700;
  letter-spacing: -0.01em;
}

p {
  margin: 0;
}

/* 滚动条 */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(17, 102, 212, 0.28);
  border-radius: 999px;
  border: 3px solid transparent;
  background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(17, 102, 212, 0.45);
  background-clip: content-box;
}

/* ---------- 3. 液态玻璃环境背景 ---------- */
.ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(120% 90% at 12% 0%, #e6f0ff 0%, rgba(230, 240, 255, 0) 55%),
    radial-gradient(90% 70% at 88% 8%, #dff4ff 0%, rgba(223, 244, 255, 0) 55%),
    linear-gradient(180deg, #f2f7fe 0%, #e9f1fb 45%, #eef4fc 100%);
}

.ambient .blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
  will-change: transform;
}

/* 灰色科技元素平铺底图（位于光斑之下，作为底图） */
.ambient::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    /* 点阵 */
    radial-gradient(circle, rgba(var(--tech-pattern-color), 0.85) 1px, transparent 1.4px),
    /* 电路 / 准星 / 十字等科技花纹 */
    var(--tech-pattern);
  background-size: var(--tech-dot-size) var(--tech-dot-size), var(--tech-pattern-size) var(--tech-pattern-size);
  background-position: 0 0, 0 0;
  background-repeat: repeat, repeat;
  opacity: var(--tech-pattern-opacity);
  pointer-events: none;
}

.blob-1 {
  width: 46vw;
  height: 46vw;
  min-width: 360px;
  min-height: 360px;
  top: -12vw;
  left: -8vw;
  background: radial-gradient(circle at 30% 30%, rgba(61, 139, 234, 0.75), rgba(17, 102, 212, 0) 70%);
  animation: drift1 26s var(--ease) infinite;
}

.blob-2 {
  width: 40vw;
  height: 40vw;
  min-width: 300px;
  min-height: 300px;
  top: 8vw;
  right: -10vw;
  background: radial-gradient(circle at 60% 40%, rgba(53, 209, 240, 0.6), rgba(53, 209, 240, 0) 70%);
  animation: drift2 32s var(--ease) infinite;
}

.blob-3 {
  width: 38vw;
  height: 38vw;
  min-width: 280px;
  min-height: 280px;
  bottom: -14vw;
  left: 22vw;
  background: radial-gradient(circle at 50% 50%, rgba(123, 123, 240, 0.42), rgba(123, 123, 240, 0) 70%);
  animation: drift3 30s var(--ease) infinite;
}

@keyframes drift1 {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(6vw, 5vw, 0) scale(1.12); }
}
@keyframes drift2 {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(-7vw, 4vw, 0) scale(1.08); }
}
@keyframes drift3 {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(4vw, -5vw, 0) scale(1.15); }
}

/* 细颗粒噪点，增强玻璃质感 */
.ambient::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 4. 布局容器 ---------- */
/* 窗口越宽，内容区越宽（82vw），超过上限后居中留白 —— 避免宽屏两侧大片空白 */
.container {
  width: 100%;
  max-width: clamp(var(--container), var(--container-fluid), var(--container-max));
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  position: relative;
  padding: 96px 0;
}

.section--tight {
  padding: 64px 0;
}

/* 章节标题 */
.sec-head {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}

.sec-head--left {
  margin-left: 0;
  text-align: left;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  margin-bottom: 18px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--rhine-600);
  border-radius: var(--r-full);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  box-shadow: 0 6px 20px -12px rgba(9, 42, 96, 0.5);
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--rhine-500);
  box-shadow: 0 0 0 4px rgba(17, 102, 212, 0.16);
}

.sec-title {
  font-size: clamp(26px, 2.78vw, 46px);
  margin-bottom: 16px;
}

.sec-desc {
  color: var(--text-muted);
  font-size: clamp(16px, 1.15vw, 18.5px);
}

/* ---------- 5. 玻璃组件 ---------- */
.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  box-shadow: var(--glass-shadow);
}

.glass-strong {
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(26px) saturate(170%);
  backdrop-filter: blur(26px) saturate(170%);
  box-shadow: var(--glass-shadow);
}

/* 高光边：模拟玻璃棱边反光 */
.glass-sheen {
  position: relative;
  overflow: hidden;
}

.glass-sheen::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.1) 42%, rgba(255, 255, 255, 0) 62%, rgba(186, 222, 255, 0.55));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.glass-sheen::after {
  content: "";
  position: absolute;
  top: -60%;
  left: -30%;
  width: 60%;
  height: 200%;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0));
  transform: rotate(18deg) translateX(-140%);
  transition: transform 0.9s var(--ease-out);
  pointer-events: none;
}

.glass-sheen:hover::after {
  transform: rotate(18deg) translateX(320%);
}

/* ---------- 6. 导航栏 ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: padding 0.4s var(--ease), background 0.4s var(--ease);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  transition: height 0.35s var(--ease);
}

.nav.is-scrolled .nav-inner {
  height: 64px;
}

.nav-shell {
  position: absolute;
  inset: 0;
  background: rgba(247, 251, 255, 0.5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.6);
  -webkit-backdrop-filter: blur(20px) saturate(170%);
  backdrop-filter: blur(20px) saturate(170%);
  opacity: 0;
  transition: opacity 0.4s var(--ease), box-shadow 0.4s var(--ease);
  pointer-events: none;
}

.nav.is-scrolled .nav-shell {
  opacity: 1;
  box-shadow: 0 12px 40px -22px rgba(9, 42, 96, 0.45);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
  z-index: 2;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.02em;
  background: linear-gradient(140deg, var(--rhine-400), var(--rhine-600) 55%, var(--rhine-800));
  box-shadow: 0 10px 24px -10px rgba(12, 80, 171, 0.85), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  position: relative;
  overflow: hidden;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0) 55%);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-strong);
  letter-spacing: 0.01em;
}

.brand-sub {
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  position: relative;
  z-index: 2;
  padding: 5px;
  border-radius: var(--r-full);
  background: rgba(255, 255, 255, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.7);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  box-shadow: 0 10px 30px -20px rgba(9, 42, 96, 0.6);
}

.nav-links a {
  position: relative;
  padding: 9px 18px;
  border-radius: var(--r-full);
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  transition: color 0.3s var(--ease), background 0.3s var(--ease);
}

.nav-links a:hover {
  color: var(--rhine-600);
  background: rgba(255, 255, 255, 0.65);
}

.nav-links a.active {
  color: #fff;
  background: linear-gradient(135deg, var(--rhine-400), var(--rhine-600));
  box-shadow: 0 8px 20px -10px rgba(12, 80, 171, 0.9);
}

.nav-actions {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--r-sm);
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  cursor: pointer;
  padding: 0;
  place-items: center;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--text-strong);
  position: relative;
  transition: transform 0.3s var(--ease);
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--text-strong);
  transition: transform 0.3s var(--ease);
}

.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

.nav.is-open .nav-toggle span { transform: rotate(45deg); }
.nav.is-open .nav-toggle span::before { transform: translateY(6px) rotate(-90deg); }
.nav.is-open .nav-toggle span::after { transform: translateY(-6px) rotate(-90deg); opacity: 0; }

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 28px;
  border-radius: var(--r-full);
  font-size: 15.5px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), background 0.35s var(--ease);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn svg {
  width: 17px;
  height: 17px;
  transition: transform 0.35s var(--ease);
}

.btn:hover svg {
  transform: translateX(3px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--rhine-400), var(--rhine-600) 60%, var(--rhine-700));
  box-shadow: 0 16px 34px -16px rgba(12, 80, 171, 0.9), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 22px 42px -16px rgba(12, 80, 171, 0.95), inset 0 1px 0 rgba(255, 255, 255, 0.45);
}

.btn-ghost {
  color: var(--text-strong);
  background: var(--glass-bg-strong);
  border-color: var(--glass-border);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  box-shadow: 0 12px 30px -20px rgba(9, 42, 96, 0.7);
}

.btn-ghost:hover {
  transform: translateY(-2px);
  color: var(--rhine-600);
}

.btn-sm {
  padding: 11px 22px;
  font-size: 14.5px;
}

.btn-lg {
  padding: 17px 36px;
  font-size: 17px;
}

/* 玻璃光泽掠过 */
.btn-primary::after {
  content: "";
  position: absolute;
  top: 0;
  left: -120%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.45), rgba(255, 255, 255, 0));
  transform: skewX(-20deg);
  transition: left 0.75s var(--ease-out);
}

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

/* 文字链接 */
.link-more {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--rhine-600);
  transition: gap 0.3s var(--ease), color 0.3s var(--ease);
}

.link-more:hover {
  gap: 12px;
  color: var(--rhine-500);
}

.link-more svg {
  width: 15px;
  height: 15px;
}

/* ---------- 8. Hero ---------- */
.hero {
  position: relative;
  padding: calc(var(--nav-h) + 78px) 0 96px;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero-title {
  font-size: clamp(32px, 3.75vw, 76px);
  line-height: 1.12;
  letter-spacing: -0.025em;
  margin-bottom: 24px;
}

.hero-title .grad {
  background: linear-gradient(120deg, var(--rhine-500), var(--aqua-400) 50%, var(--rhine-700));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: clamp(17px, 1.2vw, 20px);
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 34px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 40px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-muted);
}

.hero-meta-item svg {
  width: 18px;
  height: 18px;
  color: var(--rhine-500);
  flex-shrink: 0;
}

/* Hero 视觉卡片组 */
.hero-visual {
  position: relative;
  min-height: 440px;
}

.hero-visual .orbit-card {
  position: absolute;
  border-radius: var(--r-lg);
  padding: 20px;
}

.hero-main-card {
  position: relative;
  border-radius: var(--r-xl);
  padding: 30px;
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(26px) saturate(180%);
  backdrop-filter: blur(26px) saturate(180%);
  box-shadow: 0 40px 80px -34px rgba(9, 42, 96, 0.55);
}

.hero-main-card h3 {
  font-size: 17px;
  margin-bottom: 4px;
}

.hero-main-card .sub {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 22px;
}

.mini-bars {
  display: flex;
  align-items: flex-end;
  gap: 9px;
  height: 120px;
  margin-bottom: 20px;
}

.mini-bars span {
  flex: 1;
  border-radius: 8px 8px 4px 4px;
  background: linear-gradient(180deg, var(--rhine-400), var(--rhine-600));
  opacity: 0.9;
  animation: barPulse 3.6s var(--ease) infinite;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.mini-bars span:nth-child(1) { height: 38%; animation-delay: 0s; }
.mini-bars span:nth-child(2) { height: 62%; animation-delay: 0.25s; }
.mini-bars span:nth-child(3) { height: 48%; animation-delay: 0.5s; }
.mini-bars span:nth-child(4) { height: 82%; animation-delay: 0.75s; }
.mini-bars span:nth-child(5) { height: 66%; animation-delay: 1s; }
.mini-bars span:nth-child(6) { height: 96%; animation-delay: 1.25s; background: linear-gradient(180deg, var(--aqua-300), var(--rhine-500)); }

@keyframes barPulse {
  0%, 100% { transform: scaleY(0.9); }
  50% { transform: scaleY(1); }
}

.hero-main-card .row-stat {
  display: flex;
  justify-content: space-between;
  padding-top: 18px;
  border-top: 1px solid rgba(17, 102, 212, 0.14);
}

.hero-main-card .row-stat div {
  text-align: center;
}

.hero-main-card .row-stat b {
  display: block;
  font-size: 20px;
  color: var(--rhine-600);
}

.hero-main-card .row-stat small {
  font-size: 12px;
  color: var(--text-muted);
}

/* 漂浮小卡 */
.float-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 17px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.66);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(20px) saturate(170%);
  backdrop-filter: blur(20px) saturate(170%);
  box-shadow: 0 20px 44px -24px rgba(9, 42, 96, 0.6);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-strong);
  z-index: 3;
}

.float-card .ico {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--rhine-400), var(--rhine-600));
  color: #fff;
  flex-shrink: 0;
}

.float-card .ico svg {
  width: 17px;
  height: 17px;
}

.float-card small {
  display: block;
  font-size: 11.5px;
  font-weight: 500;
  color: var(--text-muted);
}

.float-a {
  top: -14px;
  right: -6px;
  animation: floatY 6s var(--ease) infinite;
}

.float-b {
  bottom: 26px;
  left: -34px;
  animation: floatY 7s var(--ease) infinite 0.8s;
}

.float-c {
  bottom: -18px;
  right: 34px;
  animation: floatY 6.5s var(--ease) infinite 1.6s;
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ---------- 9. 数据条 ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  padding: 8px;
  border-radius: var(--r-xl);
}

.stat-item {
  padding: 30px 22px;
  text-align: center;
  border-right: 1px solid rgba(17, 102, 212, 0.12);
}

.stat-item:last-child {
  border-right: 0;
}

.stat-num {
  font-size: clamp(34px, 2.7vw, 48px);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--rhine-600);
  line-height: 1.1;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
}

.stat-num small {
  font-size: 18px;
  font-weight: 700;
}

.stat-label {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-muted);
}

/* ---------- 10. 卡片网格 ---------- */
.grid {
  display: grid;
  gap: 24px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }

.grid-5 .card {
  padding: 26px 20px;
}

.grid-5 .card p {
  font-size: 14px;
}

.card {
  position: relative;
  border-radius: var(--r-lg);
  padding: 32px 28px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  box-shadow: var(--glass-shadow);
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease), background 0.45s var(--ease);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-6px);
  background: var(--glass-bg-strong);
  box-shadow: 0 32px 64px -28px rgba(9, 42, 96, 0.5);
}

.card-ico {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  margin-bottom: 22px;
  color: #fff;
  background: linear-gradient(140deg, var(--rhine-400), var(--rhine-600) 60%, var(--rhine-800));
  box-shadow: 0 14px 28px -14px rgba(12, 80, 171, 0.9), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  position: relative;
}

.card-ico svg {
  width: 25px;
  height: 25px;
}

.card h3 {
  font-size: 19px;
  margin-bottom: 10px;
}

.card p {
  font-size: 14.8px;
  color: var(--text-muted);
  line-height: 1.75;
}

.card-tag {
  display: inline-block;
  margin-top: 18px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--rhine-600);
  padding: 5px 12px;
  border-radius: var(--r-full);
  background: rgba(17, 102, 212, 0.09);
}

/* 服务列表（大卡，带编号） */
.svc-card {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 22px;
  align-items: start;
  border-radius: var(--r-lg);
  padding: 30px 30px 30px 26px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  box-shadow: var(--glass-shadow);
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease), background 0.45s var(--ease);
  position: relative;
  overflow: hidden;
}

.svc-card:hover {
  transform: translateY(-5px);
  background: var(--glass-bg-strong);
  box-shadow: 0 30px 60px -28px rgba(9, 42, 96, 0.5);
}

.svc-num {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: rgba(17, 102, 212, 0.22);
  line-height: 1;
  padding-top: 4px;
}

.svc-card h3 {
  font-size: 19px;
  margin-bottom: 8px;
}

.svc-card p {
  font-size: 14.8px;
  color: var(--text-muted);
}

.svc-points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.svc-points span {
  font-size: 12.5px;
  color: var(--rhine-700);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(17, 102, 212, 0.16);
  padding: 4px 12px;
  border-radius: var(--r-full);
}

/* ---------- 11. 分栏内容 ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.split-rev .split-media {
  order: 2;
}

.check-list {
  list-style: none;
  padding: 0;
  margin: 26px 0 0;
  display: grid;
  gap: 16px;
}

.check-list li {
  display: flex;
  gap: 13px;
  font-size: 15.2px;
  color: var(--text);
}

.check-list .tick {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(140deg, var(--rhine-400), var(--rhine-600));
  color: #fff;
  margin-top: 3px;
}

.check-list .tick svg {
  width: 13px;
  height: 13px;
}

/* 玻璃视觉块 */
.glass-visual {
  position: relative;
  border-radius: var(--r-xl);
  padding: 34px;
  min-height: 320px;
  display: grid;
  place-items: center;
  background: linear-gradient(150deg, rgba(17, 102, 212, 0.9), rgba(6, 27, 63, 0.92));
  overflow: hidden;
  box-shadow: 0 40px 80px -34px rgba(9, 42, 96, 0.7);
  border: 1px solid rgba(150, 196, 255, 0.3);
}

.glass-visual::before {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(53, 209, 240, 0.6), rgba(53, 209, 240, 0) 70%);
  top: -60px;
  right: -50px;
  filter: blur(20px);
}

.glass-visual::after {
  content: "";
  position: absolute;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(123, 123, 240, 0.55), rgba(123, 123, 240, 0) 70%);
  bottom: -70px;
  left: -40px;
  filter: blur(20px);
}

.gv-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  display: grid;
  gap: 14px;
}

.gv-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.24);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  color: #fff;
  font-size: 14.5px;
  font-weight: 600;
}

.gv-row small {
  display: block;
  font-weight: 500;
  font-size: 12px;
  color: rgba(226, 238, 255, 0.7);
}

.gv-badge {
  font-size: 12.5px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--r-full);
  background: rgba(53, 209, 240, 0.22);
  border: 1px solid rgba(124, 228, 247, 0.5);
  color: #d8f7ff;
}

/* ---------- 12. 时间轴 ---------- */
.timeline {
  position: relative;
  padding-left: 34px;
  display: grid;
  gap: 30px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, rgba(17, 102, 212, 0.55), rgba(17, 102, 212, 0.08));
  border-radius: 2px;
}

.tl-item {
  position: relative;
}

.tl-item::before {
  content: "";
  position: absolute;
  left: -33px;
  top: 7px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.85);
  border: 2px solid var(--rhine-500);
  box-shadow: 0 0 0 5px rgba(17, 102, 212, 0.12);
}

.tl-year {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--rhine-600);
  margin-bottom: 6px;
}

.tl-item h4 {
  font-size: 17px;
  margin-bottom: 6px;
}

.tl-item p {
  font-size: 14.8px;
  color: var(--text-muted);
}

/* ---------- 13. 价值观 ---------- */
.value-card {
  text-align: center;
  border-radius: var(--r-lg);
  padding: 34px 26px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  backdrop-filter: blur(var(--glass-blur)) saturate(160%);
  box-shadow: var(--glass-shadow);
  transition: transform 0.45s var(--ease), background 0.45s var(--ease);
}

.value-card:hover {
  transform: translateY(-6px);
  background: var(--glass-bg-strong);
}

.value-ico {
  width: 62px;
  height: 62px;
  margin: 0 auto 20px;
  border-radius: 20px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(140deg, var(--rhine-400), var(--rhine-600) 60%, var(--rhine-800));
  box-shadow: 0 16px 30px -16px rgba(12, 80, 171, 0.9), inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.value-ico svg {
  width: 27px;
  height: 27px;
}

.value-card h4 {
  font-size: 17px;
  margin-bottom: 8px;
}

.value-card p {
  font-size: 14.4px;
  color: var(--text-muted);
}

/* ---------- 14. 联系 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  align-items: start;
}

.info-item {
  display: flex;
  gap: 16px;
  padding: 22px;
  border-radius: var(--r-md);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  box-shadow: var(--glass-shadow);
  margin-bottom: 16px;
  transition: transform 0.4s var(--ease);
}

.info-item:hover {
  transform: translateX(5px);
}

.info-ico {
  width: 46px;
  height: 46px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  color: #fff;
  flex-shrink: 0;
  background: linear-gradient(140deg, var(--rhine-400), var(--rhine-600));
  box-shadow: 0 12px 24px -14px rgba(12, 80, 171, 0.9);
}

.info-ico svg {
  width: 21px;
  height: 21px;
}

.info-item h4 {
  font-size: 15px;
  margin-bottom: 3px;
}

.info-item p {
  font-size: 14.4px;
  color: var(--text-muted);
  word-break: break-all;
}

/* 表单 */
.form-card {
  border-radius: var(--r-xl);
  padding: 38px;
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(26px) saturate(180%);
  backdrop-filter: blur(26px) saturate(180%);
  box-shadow: 0 40px 80px -34px rgba(9, 42, 96, 0.5);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.field {
  margin-bottom: 18px;
}

.field label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-strong);
  margin-bottom: 8px;
}

.field label .req {
  color: #e2504a;
  margin-left: 3px;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 13px 16px;
  border-radius: var(--r-sm);
  border: 1px solid rgba(17, 102, 212, 0.18);
  background: rgba(255, 255, 255, 0.66);
  color: var(--text-strong);
  outline: none;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.3s var(--ease);
  font-size: 15px;
}

.field textarea {
  min-height: 130px;
  resize: vertical;
  line-height: 1.7;
}

.field input::placeholder,
.field textarea::placeholder {
  color: #97a9bf;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: var(--rhine-400);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(17, 102, 212, 0.13);
}

.field.has-error input,
.field.has-error textarea {
  border-color: #e2504a;
  box-shadow: 0 0 0 4px rgba(226, 80, 74, 0.1);
}

.field .err-msg {
  display: none;
  font-size: 12.5px;
  color: #d63d36;
  margin-top: 6px;
}

.field.has-error .err-msg {
  display: block;
}

.form-note {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 14px;
}

/* Toast */
.toast-wrap {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 200;
  display: grid;
  gap: 12px;
}

.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 20px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(22px) saturate(180%);
  backdrop-filter: blur(22px) saturate(180%);
  box-shadow: 0 24px 50px -22px rgba(9, 42, 96, 0.55);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text-strong);
  min-width: 260px;
  transform: translateY(14px);
  opacity: 0;
  transition: transform 0.5s var(--ease-out), opacity 0.5s var(--ease-out);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast .t-ico {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  flex-shrink: 0;
  background: linear-gradient(140deg, var(--rhine-400), var(--rhine-600));
}

.toast.error .t-ico {
  background: linear-gradient(140deg, #f0726b, #d63d36);
}

.toast .t-ico svg {
  width: 16px;
  height: 16px;
}

/* ---------- 14.1 在线地图窗口 ---------- */
.addr-head {
  text-align: center;
}

.map-frame {
  position: relative;
  margin-top: 30px;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.55);
  box-shadow:
    0 30px 70px -34px rgba(9, 42, 96, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.75);
}

/* 静态 3D 地图贴图 */
.map-img {
  display: block;
  width: 100%;
  height: auto;
  background: #e8f0fa;
}

/* 地图左上角的地址浮层（液态玻璃） */
.map-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px 10px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  backdrop-filter: blur(18px) saturate(180%);
  box-shadow: 0 14px 34px -18px rgba(9, 42, 96, 0.6);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-strong);
  pointer-events: none;
}

.map-tag .map-tag-ico {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(140deg, var(--rhine-400), var(--rhine-600));
  flex-shrink: 0;
}

.map-tag .map-tag-ico svg {
  width: 14px;
  height: 14px;
}

/* ---------- 15. CTA 区块 ---------- */
.cta-band {
  position: relative;
  border-radius: var(--r-xl);
  padding: 64px 56px;
  overflow: hidden;
  background: linear-gradient(140deg, var(--rhine-600), var(--rhine-800) 55%, var(--rhine-950));
  border: 1px solid rgba(150, 196, 255, 0.28);
  box-shadow: 0 50px 90px -40px rgba(9, 42, 96, 0.75);
  text-align: center;
  color: #fff;
}

.cta-band::before {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  top: -180px;
  right: -80px;
  background: radial-gradient(circle, rgba(53, 209, 240, 0.5), rgba(53, 209, 240, 0) 70%);
  filter: blur(10px);
}

.cta-band::after {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  bottom: -190px;
  left: -60px;
  background: radial-gradient(circle, rgba(123, 123, 240, 0.45), rgba(123, 123, 240, 0) 70%);
  filter: blur(10px);
}

.cta-band > * {
  position: relative;
  z-index: 2;
}

.cta-band h2 {
  color: #fff;
  font-size: clamp(25px, 2.64vw, 44px);
  margin-bottom: 16px;
}

.cta-band p {
  color: var(--text-invert-muted);
  font-size: clamp(16px, 1.1vw, 18.5px);
  max-width: 560px;
  margin: 0 auto 34px;
}

.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-light {
  background: rgba(255, 255, 255, 0.94);
  color: var(--rhine-700);
  box-shadow: 0 18px 36px -18px rgba(0, 0, 0, 0.5);
}

.btn-light:hover {
  transform: translateY(-2px);
  background: #fff;
}

.btn-outline-light {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.btn-outline-light:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.16);
}

/* ---------- 16. 页脚 ---------- */
.footer {
  margin-top: 40px;
  padding: 68px 0 0;
  background: linear-gradient(180deg, rgba(9, 32, 71, 0.94), rgba(3, 15, 38, 0.98));
  color: var(--text-invert);
  position: relative;
  overflow: hidden;
  border-top: 1px solid rgba(150, 196, 255, 0.18);
}

.footer::before {
  content: "";
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  top: -280px;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(17, 102, 212, 0.4), rgba(17, 102, 212, 0) 70%);
  pointer-events: none;
}

.footer-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer .brand-name {
  color: #fff;
}

.footer .brand-sub {
  color: rgba(180, 208, 245, 0.65);
}

.footer-about {
  margin-top: 20px;
  font-size: 14.2px;
  color: var(--text-invert-muted);
  max-width: 320px;
}

.footer h5 {
  font-size: 15px;
  color: #fff;
  margin: 0 0 18px;
  font-weight: 600;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 11px;
}

.footer-links a {
  font-size: 14.2px;
  color: var(--text-invert-muted);
  transition: color 0.3s var(--ease), padding-left 0.3s var(--ease);
}

.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-contact {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
}

.footer-contact li {
  display: flex;
  gap: 11px;
  font-size: 14.2px;
  color: var(--text-invert-muted);
}

.footer-contact svg {
  width: 17px;
  height: 17px;
  color: var(--rhine-300);
  flex-shrink: 0;
  margin-top: 4px;
}

.footer-bottom {
  position: relative;
  border-top: 1px solid rgba(150, 196, 255, 0.16);
  padding: 22px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  font-size: 13.4px;
  color: rgba(180, 208, 245, 0.6);
}

/* ---------- 17. 页面头（内页） ---------- */
.page-head {
  position: relative;
  padding: calc(var(--nav-h) + 70px) 0 66px;
  text-align: center;
  overflow: hidden;
}

.page-head h1 {
  font-size: clamp(30px, 3.33vw, 58px);
  letter-spacing: -0.025em;
  margin-bottom: 18px;
}

.page-head p {
  color: var(--text-muted);
  font-size: 17px;
  max-width: 620px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  font-size: 13.5px;
  color: var(--text-muted);
  margin-top: 22px;
}

.breadcrumb a:hover {
  color: var(--rhine-600);
}

.breadcrumb .sep {
  opacity: 0.5;
}

/* ---------- 18. 滚动显现动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
  will-change: opacity, transform;
}

.reveal.in {
  opacity: 1;
  transform: none;
}

.reveal[data-delay="1"] { transition-delay: 0.09s; }
.reveal[data-delay="2"] { transition-delay: 0.18s; }
.reveal[data-delay="3"] { transition-delay: 0.27s; }
.reveal[data-delay="4"] { transition-delay: 0.36s; }
.reveal[data-delay="5"] { transition-delay: 0.45s; }

/* ---------- 19. 工具类 ---------- */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 14px; }
.mt-2 { margin-top: 24px; }
.mt-3 { margin-top: 34px; }
.mb-0 { margin-bottom: 0; }
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }
.flex-center { display: flex; align-items: center; justify-content: center; }

/* 光标跟随光晕（液态玻璃增强） */
.pointer-glow {
  position: fixed;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(circle, rgba(53, 209, 240, 0.16), rgba(53, 209, 240, 0) 65%);
  transform: translate(-50%, -50%);
  transition: opacity 0.4s var(--ease);
  opacity: 0;
}

/* ---------- 20. 响应式 ---------- */

/* 超宽屏（≥1700px）：内容区已随窗口变宽，同步放大间距与字号，避免显得稀疏 */
@media (min-width: 1700px) {
  .section { padding: 112px 0; }
  .section--tight { padding: 76px 0; }
  .hero { padding: calc(var(--nav-h) + 96px) 0 112px; }
  .page-head { padding: calc(var(--nav-h) + 86px) 0 78px; }
  .grid { gap: 30px; }
  .sec-head { max-width: 860px; }
  .split { gap: 80px; }
  .contact-grid { gap: 52px; }
  .card { padding: 36px 32px; }
  .card h3 { font-size: 20.5px; }
  .card p { font-size: 15.6px; }
  .hero-main-card { padding: 34px; }
  .stats .stat-item { padding: 34px 26px; }
  .footer-grid { gap: 48px; }
  .nav-links a { padding: 10px 22px; }
}

@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 60px; }
  .hero-visual { min-height: 400px; max-width: 480px; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .split-rev .split-media { order: 0; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: 0; }
  .stat-item:nth-child(1),
  .stat-item:nth-child(2) { border-bottom: 1px solid rgba(17, 102, 212, 0.12); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
  .contact-grid { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-5 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 820px) {
  .nav-links {
    position: fixed;
    top: calc(var(--nav-h) + 12px);
    left: 20px;
    right: 20px;
    flex-direction: column;
    align-items: stretch;
    padding: 14px;
    border-radius: var(--r-lg);
    background: rgba(247, 251, 255, 0.88);
    -webkit-backdrop-filter: blur(26px) saturate(180%);
    backdrop-filter: blur(26px) saturate(180%);
    box-shadow: 0 30px 60px -30px rgba(9, 42, 96, 0.6);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-14px);
    transition: opacity 0.35s var(--ease), transform 0.35s var(--ease), visibility 0.35s;
  }
  .nav.is-open .nav-links {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .nav-links a {
    padding: 13px 18px;
    border-radius: var(--r-sm);
  }
  .nav-toggle { display: grid; }
  .nav-actions .btn { display: none; }
  .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .section { padding: 70px 0; }
  .cta-band { padding: 46px 26px; }
  .form-card { padding: 26px; }
  .form-row { grid-template-columns: 1fr; }
  .svc-card { grid-template-columns: 1fr; gap: 12px; }
  .map-tag { top: 12px; left: 12px; padding: 8px 14px 8px 10px; font-size: 12.5px; }
  .svc-num { font-size: 20px; }
  .float-b { left: -10px; }
  .hero-meta { gap: 16px; }
}

@media (max-width: 560px) {
  .container { padding: 0 18px; }
  .stats { grid-template-columns: 1fr; }
  .stat-item { border-right: 0; border-bottom: 1px solid rgba(17, 102, 212, 0.12); }
  .stat-item:last-child { border-bottom: 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-visual { min-height: 380px; }
  .hero-main-card { padding: 22px; }
  .float-a { right: 0; }
  .float-c { right: 10px; }
  .toast-wrap { right: 14px; left: 14px; bottom: 14px; }
}

/* 减弱动效偏好 */
@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;
  }
  .reveal { opacity: 1; transform: none; }
}

/* 打印 */
@media print {
  .nav, .ambient, .pointer-glow, .toast-wrap { display: none !important; }
  body { background: #fff; }
}