/* ==========================================================================
   江西墨方科技有限公司 - 官网共享样式
   设计：现代科技风 · 深蓝主色 + 青蓝渐变 · 玻璃拟态卡片
   ========================================================================== */

/* ---------- CSS 变量 ---------- */
:root {
  --c-primary: #0a4d8c;
  --c-primary-dark: #073a6b;
  --c-primary-light: #1e6fbf;
  --c-accent: #00c4d4;
  --c-accent-soft: #5ad7e6;
  --c-ink: #0f1b2d;
  --c-text: #334155;
  --c-text-light: #64748b;
  --c-bg: #ffffff;
  --c-bg-soft: #f4f8fc;
  --c-bg-deep: #0a1a33;
  --c-line: #e2e8f0;
  --c-line-soft: #eef2f7;
  --grad-hero: linear-gradient(135deg, #0a1a33 0%, #0a4d8c 55%, #0077a3 100%);
  --grad-accent: linear-gradient(135deg, #00c4d4 0%, #1e6fbf 100%);
  --grad-text: linear-gradient(135deg, #5ad7e6 0%, #00c4d4 50%, #2db4e8 100%);
  --shadow-sm: 0 2px 8px rgba(10, 26, 51, 0.06);
  --shadow-md: 0 8px 30px rgba(10, 26, 51, 0.10);
  --shadow-lg: 0 18px 50px rgba(10, 26, 51, 0.16);
  --radius: 14px;
  --radius-lg: 22px;
  --container: 1240px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s var(--ease);
}

ul,
ol {
  list-style: none;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ---------- 通用容器 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

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

.section-soft {
  background: var(--c-bg-soft);
}

.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px;
}

.section-head .eyebrow {
  display: inline-block;
  font-size: 14px;
  letter-spacing: 2px;
  color: var(--c-accent);
  font-weight: 600;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.section-head h2 {
  font-size: 38px;
  font-weight: 700;
  color: var(--c-ink);
  line-height: 1.25;
  margin-bottom: 18px;
}

.section-head p {
  font-size: 17px;
  color: var(--c-text-light);
}

.text-grad {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.3s var(--ease);
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-accent);
  color: #fff;
  box-shadow: 0 10px 26px rgba(0, 196, 212, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 34px rgba(0, 196, 212, 0.45);
}

.btn-ghost {
  border: 1.5px solid rgba(255, 255, 255, 0.55);
  color: #fff;
  backdrop-filter: blur(6px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-3px);
}

.btn-outline {
  border: 1.5px solid var(--c-primary);
  color: var(--c-primary);
}

.btn-outline:hover {
  background: var(--c-primary);
  color: #fff;
  transform: translateY(-3px);
}

/* ==========================================================================
   顶部导航
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 72px;
  display: flex;
  align-items: center;
  transition: all 0.35s var(--ease);
}

.site-header.scrolled {
  height: 64px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  box-shadow: 0 4px 20px rgba(10, 26, 51, 0.08);
}

.header-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  transition: color 0.35s var(--ease);
}

.site-header.scrolled .brand {
  color: var(--c-ink);
}

.brand-logo {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  background: var(--grad-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  box-shadow: 0 6px 16px rgba(0, 196, 212, 0.4);
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text .zh {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.brand-text .en {
  font-size: 11px;
  letter-spacing: 1.5px;
  opacity: 0.7;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.main-nav a {
  position: relative;
  padding: 9px 18px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.88);
  border-radius: 8px;
  transition: all 0.25s var(--ease);
}

.site-header.scrolled .main-nav a {
  color: var(--c-text);
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 0;
  height: 2px;
  background: var(--c-accent);
  transform: translateX(-50%);
  transition: width 0.3s var(--ease);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 22px;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--c-accent);
}

.site-header.scrolled .main-nav a:hover,
.site-header.scrolled .main-nav a.active {
  color: var(--c-primary);
}

.nav-cta {
  margin-left: 12px;
  padding: 10px 24px !important;
  border-radius: 50px;
}

.nav-cta::after {
  display: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s var(--ease);
}

.site-header.scrolled .nav-toggle span {
  background: var(--c-ink);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   Hero 区
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--grad-hero);
  overflow: hidden;
  padding-top: 72px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 18% 22%, rgba(0, 196, 212, 0.28) 0, transparent 38%),
    radial-gradient(circle at 82% 78%, rgba(30, 111, 191, 0.32) 0, transparent 42%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at center, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 0%, transparent 75%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
  width: 100%;
}

.hero-copy .badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: 50px;
  background: rgba(0, 196, 212, 0.14);
  border: 1px solid rgba(0, 196, 212, 0.4);
  color: var(--c-accent-soft);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 26px;
}

.hero-copy .badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 0 4px rgba(0, 196, 212, 0.3);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(0, 196, 212, 0.3); }
  50% { box-shadow: 0 0 0 8px rgba(0, 196, 212, 0.08); }
}

.hero-copy h1 {
  font-size: 56px;
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  letter-spacing: 1px;
  margin-bottom: 24px;
}

.hero-copy h1 .line2 {
  display: block;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-copy .lead {
  font-size: 19px;
  color: rgba(255, 255, 255, 0.82);
  max-width: 540px;
  margin-bottom: 38px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 52px;
  padding-top: 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.hero-stats .stat .num {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}

.hero-stats .stat .num span {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-stats .stat .label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  margin-top: 6px;
}

/* Hero 视觉卡片 */
.hero-visual {
  position: relative;
}

.hero-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.hero-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.float-card {
  position: absolute;
  background: rgba(10, 26, 51, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(14px);
  border-radius: 14px;
  padding: 14px 18px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.32);
  display: flex;
  align-items: center;
  gap: 12px;
  animation: float 5s ease-in-out infinite;
}

.float-card .ic {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--grad-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
  color: #fff;
  flex-shrink: 0;
}

.float-card .t {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
}

.float-card .s {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.68);
}

.float-card.fc-1 {
  top: 28px;
  left: -28px;
}

.float-card.fc-2 {
  bottom: 32px;
  right: -24px;
  animation-delay: 1.2s;
}

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

/* ---------- Hero 浏览器 Mockup（产品看板预览） ---------- */
.hero-mockup {
  position: relative;
  z-index: 1;
}

.mockup-glow {
  position: absolute;
  inset: -26px;
  z-index: 0;
  background: radial-gradient(ellipse at 50% 45%, rgba(0, 196, 212, 0.5) 0%, rgba(30, 111, 191, 0.28) 38%, transparent 70%);
  filter: blur(24px);
  pointer-events: none;
  animation: glowPulse 6s ease-in-out infinite;
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.85; }
  50% { opacity: 1; }
}

.browser {
  position: relative;
  z-index: 1;
  border-radius: 16px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.22);
  transition: transform 0.5s var(--ease);
}

.hero-mockup:hover .browser {
  transform: translateY(-6px);
}

.browser-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 16px;
  background: #eef2f7;
  border-bottom: 1px solid #e2e8f0;
}

.browser-bar .dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  flex-shrink: 0;
}

.browser-bar .dot.red { background: #ff5f57; }
.browser-bar .dot.yellow { background: #febc2e; }
.browser-bar .dot.green { background: #28c840; }

.browser-bar .url {
  margin-left: 12px;
  font-size: 12px;
  color: #64748b;
  background: #fff;
  padding: 5px 14px;
  border-radius: 50px;
  border: 1px solid #e2e8f0;
  flex: 1;
  max-width: 320px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.browser-body {
  line-height: 0;
  background: #fff;
}

.browser-body img {
  width: 100%;
  display: block;
}

/* ---------- Hero 监控中心轮播卡片 ---------- */
.gp-card {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  opacity: 0;
  pointer-events: none;
  z-index: 1;
}

.gp-card.active {
  opacity: 1;
  pointer-events: auto;
  z-index: 2;
}

@keyframes gpFadeOut {
  0%   { opacity: 1; transform: translateX(0) scale(1); }
  100% { opacity: 0; transform: translateX(-12px) scale(0.97); }
}

@keyframes gpFadeIn {
  0%   { opacity: 0; transform: translateY(18px) scale(0.96); }
  60%  { opacity: 1; transform: translateY(-2px) scale(1.01); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

.gp-card.leaving {
  animation: gpFadeOut 0.35s ease-out forwards;
  z-index: 3;
}

.gp-card.entering {
  animation: gpFadeIn 0.45s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.gp-dots {
  position: absolute;
  bottom: -42px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 7px;
  z-index: 10;
}

.gp-dots .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
  cursor: pointer;
  transition: all 0.3s;
  border: none;
  padding: 0;
}

.gp-dots .dot.active {
  background: var(--c-accent);
  width: 22px;
  border-radius: 4px;
}

/* ---------- Hero 监控中心玻璃面板（深色，无白块） ---------- */
.glass-panel {
  position: relative;
  z-index: 1;
  cursor: pointer;
  height: 360px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.10) 0%, rgba(255, 255, 255, 0.03) 100%);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 22px;
  padding: 28px 26px 50px;
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.38);
  overflow: hidden;
}

.glass-panel::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -20%;
  width: 70%;
  height: 70%;
  background: radial-gradient(ellipse, rgba(0, 196, 212, 0.35), transparent 70%);
  filter: blur(20px);
  pointer-events: none;
}

.gp-head {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.gp-title {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 700;
  font-size: 15px;
}

.gp-title .gp-ic {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--grad-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}

.gp-live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--c-accent-soft);
  padding: 4px 11px;
  background: rgba(0, 196, 212, 0.15);
  border: 1px solid rgba(0, 196, 212, 0.3);
  border-radius: 50px;
  font-weight: 600;
}

.gp-live .live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 0 4px rgba(0, 196, 212, 0.25);
  animation: pulse 2s infinite;
}

/* ---------- 轮播卡片：核心卖点列表风格 ---------- */
.gp-highlights {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.gp-highlight {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  background: rgba(10, 32, 60, 0.55);
  border: 1px solid rgba(0, 196, 212, 0.22);
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
  transition: all 0.25s ease;
}

.gp-highlight:hover {
  background: rgba(15, 42, 75, 0.70);
  border-color: rgba(0, 196, 212, 0.45);
  transform: translateX(4px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
}

.gp-highlight .gp-hl-ic {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 7px;
  background: var(--grad-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
}

.gp-highlight .gp-hl-body {
  flex: 1;
  min-width: 0;
}

.gp-highlight .gp-hl-title {
  color: #fff;
  font-weight: 600;
  font-size: 13px;
  margin-bottom: 2px;
  line-height: 1.3;
}

.gp-highlight .gp-hl-tag {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 3px;
  background: rgba(0, 196, 212, 0.20);
  color: var(--c-accent);
  font-size: 10px;
  font-weight: 600;
  margin-right: 4px;
  line-height: 1.4;
}

.gp-highlight .gp-hl-tag:last-child {
  margin-right: 0;
}

.gp-highlight .gp-hl-tag.warn {
  background: rgba(255, 138, 76, 0.20);
  color: #ffb37a;
}

.gp-highlight .gp-hl-tag.purple {
  background: rgba(167, 139, 250, 0.20);
  color: #c4b5fd;
}

/* ---------- 点击引导 ---------- */
.gp-cta {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: linear-gradient(90deg, rgba(0, 160, 180, 0.55), rgba(0, 120, 150, 0.35));
  border: 1px solid rgba(0, 196, 212, 0.5);
  border-radius: 10px;
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  transition: all 0.3s ease;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(0, 196, 212, 0.2);
}

.gp-cta:hover {
  background: linear-gradient(90deg, rgba(0, 196, 212, 0.70), rgba(0, 160, 190, 0.50));
  border-color: rgba(0, 230, 240, 0.8);
  box-shadow: 0 4px 18px rgba(0, 196, 212, 0.35);
}

.gp-cta .gp-cta-arrow {
  color: var(--c-accent);
  font-weight: 700;
  transition: transform 0.3s ease;
}

.gp-cta:hover .gp-cta-arrow {
  transform: translateX(4px);
}

.gp-stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 24px;
}

.gp-stat {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 14px;
  padding: 16px 16px 14px;
  transition: transform 0.3s var(--ease), background 0.3s var(--ease);
}

.gp-stat:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.10);
}

.gp-stat .gp-num {
  font-size: 26px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}

.gp-stat .gp-num small {
  font-size: 13px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.6);
  margin-left: 3px;
}

.gp-stat .gp-lab {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.62);
  margin-top: 6px;
}

.gp-bars {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 13px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.10);
}

.bar-row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.72);
}

.bar-row .bar-lab {
  width: 74px;
  flex-shrink: 0;
}

.bar-row .bar-track {
  flex: 1;
  height: 8px;
  background: rgba(255, 255, 255, 0.10);
  border-radius: 50px;
  overflow: hidden;
}

.bar-row .bar-track i {
  display: block;
  height: 100%;
  background: var(--grad-accent);
  border-radius: 50px;
  transform-origin: left;
  animation: barGrow 1.2s var(--ease) both;
}

@keyframes barGrow {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

.bar-row .bar-val {
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  width: 52px;
  text-align: right;
}

/* ---------- 产品截图框 ---------- */
.shot-frame {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--c-line);
  box-shadow: var(--shadow-lg);
  background: #fff;
  line-height: 0;
}

.shot-frame img {
  width: 100%;
  display: block;
}

/* ---------- 产品拼图（关于我们） ---------- */
.collage {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  position: relative;
}

.collage::before {
  content: "";
  position: absolute;
  inset: -16px;
  background: radial-gradient(ellipse at 50% 50%, rgba(0, 196, 212, 0.14), transparent 70%);
  filter: blur(18px);
  z-index: 0;
}

.collage .cell {
  position: relative;
  z-index: 1;
  aspect-ratio: 1 / 1;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--c-line);
  box-shadow: var(--shadow-sm);
  background: var(--c-bg-soft);
  line-height: 0;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.collage .cell:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.collage .cell img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}

.collage .cell:hover img {
  transform: scale(1.06);
}

.collage .cell:nth-child(1),
.collage .cell:nth-child(4) {
  transform: translateY(12px);
}

.collage .cell:nth-child(1):hover,
.collage .cell:nth-child(4):hover {
  transform: translateY(6px);
}

@media (max-width: 760px) {
  .collage .cell:nth-child(1),
  .collage .cell:nth-child(4) { transform: none; }
  .collage .cell:nth-child(1):hover,
  .collage .cell:nth-child(4):hover { transform: translateY(-6px); }
}

/* 滚动提示 */
.scroll-hint {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  color: rgba(255, 255, 255, 0.55);
  font-size: 13px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.scroll-hint .mouse {
  width: 24px;
  height: 38px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 13px;
  position: relative;
}

.scroll-hint .mouse::before {
  content: "";
  position: absolute;
  top: 7px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 7px;
  background: #fff;
  border-radius: 2px;
  animation: wheel 1.8s infinite;
}

@keyframes wheel {
  0% { opacity: 1; transform: translate(-50%, 0); }
  100% { opacity: 0; transform: translate(-50%, 12px); }
}

/* ==========================================================================
   核心业务卡
   ========================================================================== */
.biz-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.biz-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 34px 28px;
  border: 1px solid var(--c-line-soft);
  transition: all 0.35s var(--ease);
  position: relative;
  overflow: hidden;
}

.biz-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--grad-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}

.biz-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.biz-card:hover::before {
  transform: scaleX(1);
}

.biz-card .ic {
  width: 58px;
  height: 58px;
  border-radius: 15px;
  background: linear-gradient(135deg, rgba(0, 196, 212, 0.12), rgba(30, 111, 191, 0.12));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 22px;
}

.biz-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--c-ink);
  margin-bottom: 12px;
}

.biz-card p {
  font-size: 14.5px;
  color: var(--c-text-light);
  line-height: 1.7;
}

/* ==========================================================================
   产品展示区
   ========================================================================== */
.prod-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.prod-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--c-line-soft);
  transition: all 0.35s var(--ease);
  display: flex;
  flex-direction: column;
}

.prod-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.prod-card .thumb {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--c-bg-soft);
}

.prod-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}

.prod-card:hover .thumb img {
  transform: scale(1.06);
}

.prod-card .tag {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 5px 13px;
  background: rgba(10, 26, 51, 0.78);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  border-radius: 50px;
}

.prod-card .body {
  padding: 24px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.prod-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--c-ink);
  margin-bottom: 8px;
}

.prod-card .desc {
  font-size: 14px;
  color: var(--c-text-light);
  line-height: 1.65;
  margin-bottom: 18px;
  flex: 1;
}

.prod-card .link {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s var(--ease);
}

.prod-card .link:hover {
  gap: 12px;
  color: var(--c-accent);
}

/* ==========================================================================
   通用特性 / 卖点条
   ========================================================================== */
.feat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--c-line-soft);
  overflow: hidden;
}

.feat-item {
  padding: 36px 30px;
  border-right: 1px solid var(--c-line-soft);
  text-align: center;
  transition: background 0.3s var(--ease);
}

.feat-item:last-child {
  border-right: none;
}

.feat-item:hover {
  background: var(--c-bg-soft);
}

.feat-item .num {
  font-size: 40px;
  font-weight: 800;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}

.feat-item h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-ink);
  margin: 14px 0 8px;
}

.feat-item p {
  font-size: 13.5px;
  color: var(--c-text-light);
}

/* ==========================================================================
   CTA 条
   ========================================================================== */
.cta-band {
  position: relative;
  padding: 76px 0;
  background: var(--grad-hero);
  overflow: hidden;
  text-align: center;
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 25% 30%, rgba(0, 196, 212, 0.3) 0, transparent 40%),
    radial-gradient(circle at 75% 70%, rgba(30, 111, 191, 0.3) 0, transparent 42%);
}

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

.cta-band h2 {
  font-size: 40px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 18px;
}

.cta-band p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.82);
  max-width: 600px;
  margin: 0 auto 34px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ==========================================================================
   解决方案详情 (solutions.html)
   ========================================================================== */
.sol-block {
  padding: 80px 0;
  border-bottom: 1px solid var(--c-line-soft);
}

.sol-block:last-child {
  border-bottom: none;
}

.sol-block.alt {
  background: var(--c-bg-soft);
}

.sol-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.sol-inner.reverse .sol-visual {
  order: 2;
}

.sol-visual .phone-frame {
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--c-line);
  background: #fff;
}

.sol-visual img {
  width: 100%;
  display: block;
}

.sol-visual .screen-stack {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.sol-visual .screen-stack img {
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--c-line-soft);
}

.sol-copy .tag {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(0, 196, 212, 0.1);
  color: var(--c-accent);
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 18px;
}

.sol-copy h3 {
  font-size: 32px;
  font-weight: 800;
  color: var(--c-ink);
  margin-bottom: 14px;
  line-height: 1.25;
}

.sol-copy .positioning {
  font-size: 17px;
  color: var(--c-primary);
  font-weight: 600;
  margin-bottom: 22px;
  padding-left: 14px;
  border-left: 3px solid var(--c-accent);
}

.sol-copy .intro {
  font-size: 16px;
  color: var(--c-text-light);
  margin-bottom: 30px;
}

.sell-points {
  display: grid;
  gap: 18px;
}

.sell-point {
  display: flex;
  gap: 16px;
  padding: 20px 22px;
  background: #fff;
  border-radius: 12px;
  border: 1px solid var(--c-line-soft);
  transition: all 0.3s var(--ease);
}

.sol-block.alt .sell-point {
  background: var(--c-bg);
}

.sell-point:hover {
  box-shadow: var(--shadow-sm);
  transform: translateX(6px);
  border-color: rgba(0, 196, 212, 0.4);
}

.sell-point .idx {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--grad-accent);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sell-point h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-ink);
  margin-bottom: 4px;
}

.sell-point p {
  font-size: 14px;
  color: var(--c-text-light);
  line-height: 1.65;
}

.sol-access {
  margin-top: 30px;
  padding: 16px 20px;
  background: rgba(10, 77, 140, 0.06);
  border-radius: 10px;
  border-left: 3px solid var(--c-primary);
  font-size: 13.5px;
  color: var(--c-text);
}

.sol-access strong {
  color: var(--c-primary);
}

/* 图片网格 (一个产品多截图) */
.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.gallery img {
  width: 100%;
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--c-line-soft);
  transition: transform 0.4s var(--ease);
}

.gallery img:hover {
  transform: scale(1.03);
}

.gallery.cols-2 {
  grid-template-columns: 1fr 1fr;
}

/* ==========================================================================
   关于我们页
   ========================================================================== */
.about-hero {
  position: relative;
  padding: 160px 0 90px;
  background: var(--grad-hero);
  overflow: hidden;
  text-align: center;
}

.about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(0, 196, 212, 0.28) 0, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(30, 111, 191, 0.32) 0, transparent 42%);
}

.about-hero .container {
  position: relative;
  z-index: 2;
}

.about-hero .eyebrow {
  color: var(--c-accent-soft);
  font-size: 14px;
  letter-spacing: 2px;
  font-weight: 600;
  margin-bottom: 18px;
  display: inline-block;
}

.about-hero h1 {
  font-size: 48px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 20px;
}

.about-hero p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  max-width: 680px;
  margin: 0 auto;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.split-visual img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--c-line);
}

.split-copy h2 {
  font-size: 34px;
  font-weight: 800;
  color: var(--c-ink);
  line-height: 1.25;
  margin-bottom: 22px;
}

.split-copy p {
  font-size: 16px;
  color: var(--c-text-light);
  margin-bottom: 18px;
  line-height: 1.85;
}

.value-list {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.value-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.value-list .check {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--grad-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

.value-list .t strong {
  color: var(--c-ink);
  font-size: 15.5px;
}

.value-list .t span {
  display: block;
  color: var(--c-text-light);
  font-size: 14px;
  margin-top: 2px;
}

/* 时间线 */
.timeline {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
  padding-left: 30px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(var(--c-accent), var(--c-primary));
}

.tl-item {
  position: relative;
  padding-bottom: 42px;
}

.tl-item:last-child {
  padding-bottom: 0;
}

.tl-item::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--c-accent);
  box-shadow: 0 0 0 4px rgba(0, 196, 212, 0.15);
}

.tl-item .year {
  font-size: 15px;
  font-weight: 800;
  color: var(--c-primary);
  margin-bottom: 6px;
}

.tl-item h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--c-ink);
  margin-bottom: 6px;
}

.tl-item p {
  font-size: 14.5px;
  color: var(--c-text-light);
}

/* ==========================================================================
   联系页
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info h3 {
  font-size: 28px;
  font-weight: 800;
  color: var(--c-ink);
  margin-bottom: 16px;
}

.contact-info > p {
  font-size: 16px;
  color: var(--c-text-light);
  margin-bottom: 34px;
}

.contact-list {
  display: grid;
  gap: 22px;
}

.contact-list li {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 22px 24px;
  background: #fff;
  border-radius: 14px;
  border: 1px solid var(--c-line-soft);
  transition: all 0.3s var(--ease);
}

.contact-list li:hover {
  box-shadow: var(--shadow-sm);
  transform: translateY(-4px);
}

.contact-list .ic {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0, 196, 212, 0.12), rgba(30, 111, 191, 0.12));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.contact-list .lab {
  font-size: 13px;
  color: var(--c-text-light);
  margin-bottom: 4px;
}

.contact-list .val {
  font-size: 16px;
  font-weight: 600;
  color: var(--c-ink);
}

/* 联系方式全宽布局（去掉表单后） */
.contact-grid--single {
  grid-template-columns: 1fr;
  max-width: 1080px;
  text-align: center;
}

.contact-grid--single .contact-info > p {
  margin: 0 auto 34px;
  max-width: 580px;
}

.contact-grid--single .contact-list {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  text-align: left;
}

@media (max-width: 760px) {
  .contact-grid--single .contact-list {
    grid-template-columns: 1fr;
  }
}

/* 表单 */
.contact-form {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--c-line-soft);
}

.contact-form h3 {
  font-size: 24px;
  font-weight: 800;
  color: var(--c-ink);
  margin-bottom: 8px;
}

.contact-form .sub {
  font-size: 14px;
  color: var(--c-text-light);
  margin-bottom: 30px;
}

.field {
  margin-bottom: 22px;
}

.field label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-ink);
  margin-bottom: 8px;
}

.field label .req {
  color: #e34c4c;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--c-line);
  border-radius: 10px;
  font-size: 15px;
  font-family: inherit;
  color: var(--c-ink);
  background: var(--c-bg-soft);
  transition: all 0.25s var(--ease);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--c-accent);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(0, 196, 212, 0.12);
}

.field textarea {
  resize: vertical;
  min-height: 110px;
}

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

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

.form-success {
  display: none;
  text-align: center;
  padding: 30px 10px;
}

.form-success.show {
  display: block;
}

.form-success .ic {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--grad-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  color: #fff;
}

.form-success h4 {
  font-size: 20px;
  color: var(--c-ink);
  margin-bottom: 8px;
}

.form-success p {
  font-size: 14px;
  color: var(--c-text-light);
}

/* 地图区 */
.map-band {
  margin-top: 64px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--c-line-soft);
  box-shadow: var(--shadow-sm);
  line-height: 0;
}

.map-band iframe {
  width: 100%;
  height: 380px;
  border: 0;
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
  background: var(--c-bg-deep);
  color: rgba(255, 255, 255, 0.7);
  padding: 70px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .brand {
  color: #fff;
  margin-bottom: 20px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 22px;
  max-width: 360px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: all 0.3s var(--ease);
}

.footer-social a:hover {
  background: var(--grad-accent);
  transform: translateY(-4px);
}

.footer-col h5 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  transition: all 0.25s var(--ease);
}

.footer-col ul li a:hover {
  color: var(--c-accent);
  padding-left: 4px;
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.6);
}

.footer-bottom a:hover {
  color: var(--c-accent);
}

.footer-bottom .footer-icp a {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.25);
  transition: all 0.2s ease;
}

.footer-bottom .footer-icp a:hover {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

/* ==========================================================================
   滚动出现动画
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

.reveal.d1 { transition-delay: 0.1s; }
.reveal.d2 { transition-delay: 0.2s; }
.reveal.d3 { transition-delay: 0.3s; }
.reveal.d4 { transition-delay: 0.4s; }

/* 返回顶部 */
.back-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--grad-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all 0.35s var(--ease);
  z-index: 900;
}

.back-top.show {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.back-top:hover {
  transform: translateY(-4px);
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1100px) {
  .hero-inner,
  .sol-inner,
  .split,
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .sol-inner.reverse .sol-visual {
    order: 0;
  }
  .hero-copy h1 { font-size: 46px; }
  .biz-grid,
  .prod-grid,
  .feat-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .feat-item { border-right: none; border-bottom: 1px solid var(--c-line-soft); }
  .feat-item:nth-last-child(-n+2) { border-bottom: none; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .container,
  .header-inner { padding: 0 20px; }
  .section { padding: 64px 0; }
  .section-head h2,
  .about-hero h1,
  .cta-band h2 { font-size: 30px; }
  .hero-copy h1 { font-size: 36px; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .float-card { display: none; }

  .main-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 76%;
    max-width: 320px;
    height: 100vh;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 80px 24px 24px;
    gap: 4px;
    transform: translateX(100%);
    transition: transform 0.35s var(--ease);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.15);
  }
  .main-nav.open { transform: none; }
  .main-nav a {
    color: var(--c-text);
    padding: 14px 16px;
    border-radius: 10px;
    font-size: 16px;
  }
  .main-nav a:hover,
  .main-nav a.active { background: var(--c-bg-soft); color: var(--c-primary); }
  .main-nav a::after { display: none; }
  .nav-cta { margin: 12px 0 0; text-align: center; }
  .nav-toggle { display: flex; }
  .site-header.scrolled .nav-toggle span { background: var(--c-ink); }

  .biz-grid,
  .prod-grid,
  .feat-row,
  .gallery,
  .gallery.cols-2,
  .form-row { grid-template-columns: 1fr; }
  .feat-item { border-bottom: 1px solid var(--c-line-soft); }
  .feat-item:last-child { border-bottom: none; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .contact-form { padding: 28px 22px; }
}