/* ===== 基础变量 ===== */
:root {
  --color-primary: #c41e3a;
  --color-primary-dark: #9a1830;
  --color-primary-light: #e8354f;
  --color-accent: #d4a853;
  --color-accent-light: #f0d48a;
  --color-dark: #1a1a2e;
  --color-dark-soft: #2d2d44;
  --color-text: #333;
  --color-text-light: #666;
  --color-text-muted: #999;
  --color-bg: #fafafa;
  --color-white: #fff;
  --color-border: #e8e8e8;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --shadow-sm: 0 2px 8px rgba(0,0,0,.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,.1);
  --shadow-lg: 0 8px 40px rgba(0,0,0,.15);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: .3s ease;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-white);
  box-shadow: 0 4px 15px rgba(196,30,58,.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(196,30,58,.45);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,.6);
}

.btn-outline:hover {
  background: rgba(255,255,255,.15);
  border-color: var(--color-white);
}

.btn-full { width: 100%; }

/* ===== 导航 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(26,26,46,.95);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-white);
}

.logo-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  border-radius: 50%;
  flex-shrink: 0;
  background: transparent;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.35;
  gap: 2px;
}

.logo-text strong {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1px;
  white-space: nowrap;
}

.logo-text small {
  font-size: 10px;
  opacity: .75;
  letter-spacing: .5px;
  font-family: Georgia, "Times New Roman", serif;
}

.nav {
  display: flex;
  gap: 8px;
}

.nav a {
  color: rgba(255,255,255,.85);
  font-size: 14px;
  padding: 8px 16px;
  border-radius: 8px;
  transition: var(--transition);
}

.nav a:hover {
  color: var(--color-white);
  background: rgba(255,255,255,.1);
}

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

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  transition: var(--transition);
}

/* ===== 首屏 ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-white);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(160deg, #0a0a12 0%, #1a0510 30%, #3d0a14 55%, #0d0d1a 100%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,40,60,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,40,60,.07) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 20%, transparent 80%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .5;
  animation: glowPulse 6s ease-in-out infinite;
}

.hero-glow-1 {
  width: 500px;
  height: 500px;
  background: rgba(220,20,60,.35);
  top: -10%;
  right: 10%;
}

.hero-glow-2 {
  width: 400px;
  height: 400px;
  background: rgba(180,0,30,.25);
  bottom: 5%;
  left: 5%;
  animation-delay: -3s;
}

.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(255,50,70,.03) 2px,
      rgba(255,50,70,.03) 4px
    );
  pointer-events: none;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(255,30,50,.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(196,30,58,.08) 0%, transparent 40%);
  pointer-events: none;
}

@keyframes glowPulse {
  0%, 100% { opacity: .4; transform: scale(1); }
  50% { opacity: .65; transform: scale(1.08); }
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: calc(var(--header-height) + 40px) 24px 80px;
}

.hero-tag {
  display: inline-block;
  padding: 6px 20px;
  background: rgba(255,40,60,.12);
  border: 1px solid rgba(255,60,80,.35);
  border-radius: 50px;
  font-size: 13px;
  color: #ff6b7a;
  margin-bottom: 24px;
  letter-spacing: 2px;
  backdrop-filter: blur(4px);
}

.hero h1 {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.hero-slogan {
  font-size: clamp(16px, 2.5vw, 22px);
  color: rgba(255,120,130,.9);
  margin-bottom: 24px;
  letter-spacing: 4px;
}

.hero-desc {
  font-size: 16px;
  opacity: .85;
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

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

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.5);
  font-size: 12px;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== 通用区块 ===== */
section { padding: 100px 0; }

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header.light { color: var(--color-white); }

.section-label {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--color-primary);
  margin-bottom: 12px;
  font-weight: 600;
}

.section-header.light .section-label { color: var(--color-accent-light); }

.section-header h2 {
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-dark);
}

.section-header.light h2 { color: var(--color-white); }

.section-sub {
  font-size: 16px;
  color: var(--color-text-light);
}

.section-header.light .section-sub { color: rgba(255,255,255,.7); }

/* ===== 公司简介 ===== */
.values { background: var(--color-bg); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.about-text p {
  margin-bottom: 16px;
  color: var(--color-text-light);
  text-align: justify;
}

.about-text strong { color: var(--color-primary); }

.values-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.value-card {
  background: var(--color-white);
  padding: 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.value-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.value-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--color-dark);
}

.value-card p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ===== 核心业务 ===== */
.services {
  background: linear-gradient(160deg, var(--color-dark) 0%, var(--color-dark-soft) 100%);
  position: relative;
}

.services::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(196,30,58,.15) 0%, transparent 70%);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
}

.service-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
  backdrop-filter: blur(4px);
}

.service-card:hover {
  background: rgba(255,255,255,.1);
  transform: translateY(-6px);
  border-color: rgba(212,168,83,.3);
}

.service-card.featured {
  border-color: rgba(196,30,58,.4);
  background: rgba(196,30,58,.1);
}

.service-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-accent);
  opacity: .6;
  margin-bottom: 12px;
}

.service-card h3 {
  font-size: 18px;
  color: var(--color-white);
  margin-bottom: 12px;
}

.service-card p {
  font-size: 14px;
  color: rgba(255,255,255,.65);
  line-height: 1.7;
}

/* ===== 重点业务 ===== */
.details-list {
  display: flex;
  flex-direction: column;
  gap: 60px;
}

.detail-item {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: center;
}

.detail-item.reverse { direction: rtl; }
.detail-item.reverse > * { direction: ltr; }

.detail-visual {
  aspect-ratio: 4/3;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.detail-visual.software {
  background: linear-gradient(135deg, #0f3460, #16213e);
}

.detail-visual.party {
  background: linear-gradient(135deg, #c41e3a, #8b0000);
}

.detail-visual.culture {
  background: linear-gradient(135deg, #2d2d44, #4a4a6a);
}

.detail-visual.miniapp {
  background: linear-gradient(135deg, #1a73e8, #0d47a1);
}

.detail-visual span {
  position: relative;
  z-index: 1;
  letter-spacing: 4px;
}

.detail-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M0 40L40 0H20L0 20M40 40V20L20 40'/%3E%3C/g%3E%3C/svg%3E");
}

.detail-content h3 {
  font-size: 24px;
  color: var(--color-dark);
  margin-bottom: 16px;
}

.detail-content p {
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.detail-tags span {
  padding: 6px 16px;
  background: rgba(196,30,58,.08);
  color: var(--color-primary);
  border-radius: 50px;
  font-size: 13px;
}

.detail-features li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-light);
  font-size: 15px;
}

.detail-features li:last-child { border-bottom: none; }
.detail-features strong { color: var(--color-dark); }

/* ===== 找店易 ===== */
.zhaodianyi {
  background: linear-gradient(180deg, #f0f4ff 0%, var(--color-white) 100%);
}

.zdy-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: center;
}

.zdy-label-big {
  font-size: 22px !important;
  letter-spacing: 6px !important;
  font-weight: 700;
  padding: 8px 24px;
  background: rgba(196,30,58,.1);
  border-radius: 8px;
}

.zdy-content h2 {
  font-size: clamp(24px, 3.5vw, 32px);
  color: var(--color-dark);
  margin: 8px 0 12px;
}

.zdy-tagline {
  font-size: 18px;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 20px;
}

.zdy-content > p {
  color: var(--color-text-light);
  margin-bottom: 28px;
}

.zdy-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 28px;
}

.zdy-feature {
  background: var(--color-white);
  padding: 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border-left: 3px solid var(--color-primary);
}

.zdy-feature h4 {
  font-size: 15px;
  color: var(--color-dark);
  margin-bottom: 6px;
}

.zdy-feature p {
  font-size: 13px;
  color: var(--color-text-muted);
}

.zdy-steps {
  background: var(--color-white);
  padding: 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.zdy-steps h4 {
  font-size: 15px;
  margin-bottom: 12px;
  color: var(--color-dark);
}

.zdy-steps ol {
  padding-left: 20px;
}

.zdy-steps li {
  font-size: 14px;
  color: var(--color-text-light);
  padding: 4px 0;
  list-style: decimal;
}

.zdy-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.badge {
  padding: 8px 18px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-white);
  border-radius: 50px;
  font-size: 13px;
  font-weight: 500;
}

.zdy-showcase {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.zdy-screenshot {
  width: 260px;
  border-radius: 24px;
  box-shadow: var(--shadow-lg), 0 0 0 6px #1a1a2e;
}

.zdy-qrcode-wrap {
  text-align: center;
}

.zdy-qrcode {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  margin: 0 auto 8px;
  box-shadow: var(--shadow-md);
}

.zdy-qrcode-wrap p {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ===== 服务优势 ===== */
.advantages {
  background: linear-gradient(160deg, var(--color-dark) 0%, #16213e 100%);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.advantage-card {
  text-align: center;
  padding: 32px 20px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.advantage-card:hover {
  background: rgba(255,255,255,.1);
  transform: translateY(-4px);
}

.advantage-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-accent);
  opacity: .7;
  margin-bottom: 12px;
}

.advantage-card h3 {
  font-size: 16px;
  color: var(--color-white);
  margin-bottom: 10px;
}

.advantage-card p {
  font-size: 13px;
  color: rgba(255,255,255,.6);
  line-height: 1.6;
}

/* ===== 联系我们 ===== */
.contact { background: var(--color-bg); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info h2 {
  font-size: 32px;
  color: var(--color-dark);
  margin: 8px 0 12px;
}

.contact-info > p {
  color: var(--color-text-light);
  margin-bottom: 32px;
}

.contact-list li {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}

.contact-icon {
  width: 44px;
  height: 44px;
  background: rgba(196,30,58,.08);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.contact-list strong {
  display: block;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.contact-list a {
  color: var(--color-primary);
  font-size: 16px;
  font-weight: 600;
}

.contact-list a:hover { text-decoration: underline; }

.contact-qrcodes {
  display: flex;
  gap: 32px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.qrcode-item {
  text-align: center;
}

.qrcode-item img {
  width: 120px;
  height: 120px;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  margin: 0 auto 8px;
  object-fit: contain;
  background: var(--color-white);
}

.qrcode-item p {
  font-size: 13px;
  color: var(--color-text-muted);
}

.contact-form {
  background: var(--color-white);
  padding: 36px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.contact-form h3 {
  font-size: 20px;
  margin-bottom: 24px;
  color: var(--color-dark);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  transition: var(--transition);
  background: var(--color-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(196,30,58,.1);
}

.form-group textarea { resize: vertical; min-height: 100px; }

.form-note {
  font-size: 12px;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 12px;
}

/* ===== 页脚 ===== */
.footer {
  background: var(--color-dark);
  color: rgba(255,255,255,.7);
  padding: 48px 0 32px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}

.footer-logo {
  width: 52px;
  height: 52px;
  object-fit: contain;
  border-radius: 50%;
  flex-shrink: 0;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--color-white);
  text-align: left;
}

.footer-brand strong {
  font-size: 16px;
  letter-spacing: 1px;
}

.footer-en {
  font-size: 11px;
  opacity: .65;
  font-family: Georgia, "Times New Roman", serif;
  margin: 2px 0 4px;
  letter-spacing: .3px;
}

.footer-brand p {
  font-size: 13px;
  opacity: .6;
  margin-top: 4px;
}

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  font-size: 14px;
  transition: var(--transition);
}

.footer-links a:hover { color: var(--color-accent-light); }

.footer-copy {
  font-size: 12px;
  opacity: .5;
}

/* ===== 回到顶部 ===== */
.back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
}

.back-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-3px);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .advantages-grid { grid-template-columns: repeat(3, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .zdy-grid { grid-template-columns: 1fr; }
  .zdy-visual { order: -1; }
}

@media (max-width: 768px) {
  section { padding: 72px 0; }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(26,26,46,.98);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    transform: translateY(-120%);
    opacity: 0;
    transition: var(--transition);
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
  }

  .nav a { padding: 12px 16px; }

  .nav-toggle { display: flex; }

  .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .nav-toggle.active span:nth-child(2) { opacity: 0; }
  .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .detail-item,
  .detail-item.reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }

  .detail-visual { aspect-ratio: 16/9; }

  .services-grid { grid-template-columns: 1fr; }
  .advantages-grid { grid-template-columns: 1fr 1fr; }
  .values-cards { grid-template-columns: 1fr; }
  .zdy-features { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }

  .logo-text strong { font-size: 13px; }
  .logo-text small { font-size: 9px; }
  .logo-img { width: 40px; height: 40px; }
  .contact-qrcodes { justify-content: center; }
  .zdy-screenshot { width: 220px; }
  .hero-desc br { display: none; }
}

@media (max-width: 480px) {
  .advantages-grid { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }
}