/* ================================================================
 *  星脉影像 — fraim.cn 设计令牌
 *  暗色主题，Apple 克制风格
 * ================================================================ */

:root {
  /* 背景 */
  --color-bg-canvas:    #0a0a0a;
  --color-bg-card:      rgba(255, 255, 255, 0.04);
  --color-bg-elevated:  rgba(255, 255, 255, 0.07);

  /* 文字 */
  --color-text-primary:    #f0f0f3;
  --color-text-secondary:  rgba(255, 255, 255, 0.65);
  --color-text-tertiary:   rgba(255, 255, 255, 0.4);

  /* 边框 */
  --color-border:       rgba(255, 255, 255, 0.08);
  --color-border-focus: rgba(255, 255, 255, 0.2);

  /* Accent */
  --color-accent:        #7788ff;
  --color-accent-hover:  #8899ff;
  --color-accent-bg:     rgba(119, 136, 255, 0.1);

  /* 语义色 */
  --color-success:   #30d158;
  --color-warning:   #ff9f0a;
  --color-purple:    #bf5af2;

  /* 阴影 */
  --shadow-sm:    0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md:    0 4px 20px rgba(0, 0, 0, 0.5);
  --shadow-lg:    0 12px 48px rgba(0, 0, 0, 0.6);

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 24px;

  /* 过渡 */
  --transition-fast:   150ms ease;
  --transition-normal: 300ms ease;

  color-scheme: dark;
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-font-smoothing: antialiased; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', sans-serif;
  background: var(--color-bg-canvas);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ── 背景光晕 ── */
.bg-glow { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.bg-glow .orb { position: absolute; border-radius: 50%; }
.bg-glow .o1 { width: 700px; height: 700px; background: radial-gradient(circle, rgba(119,136,255,.3) 0%, transparent 65%); top: -250px; right: -150px; filter: blur(100px); animation: drift1 12s ease-in-out infinite alternate; }
.bg-glow .o2 { width: 500px; height: 500px; background: radial-gradient(circle, rgba(191,90,242,.15) 0%, transparent 65%); bottom: -200px; left: -100px; filter: blur(100px); animation: drift2 16s ease-in-out infinite alternate; }
@keyframes drift1 { to { transform: translate(-60px, 40px) scale(1.15); } }
@keyframes drift2 { to { transform: translate(50px, -30px) scale(1.1); } }

/* ── 导航 ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(20px, 5vw, 48px); height: 60px;
  background: rgba(10, 10, 10, 0.7); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--color-border);
}
.nav-logo { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 15px; letter-spacing: -0.02em; }
.nav-logo img { height: 24px; object-fit: contain; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { color: var(--color-text-secondary); font-size: 14px; transition: color var(--transition-fast); }
.nav-links a:hover { color: var(--color-text-primary); }
.nav-links a.active { color: var(--color-text-primary); }
.nav-cta {
  background: var(--color-accent) !important; color: #fff !important;
  padding: 8px 20px; border-radius: var(--radius-lg);
  font-weight: 500 !important; font-size: 13px !important;
  transition: background var(--transition-fast) !important;
}
.nav-cta:hover { background: var(--color-accent-hover) !important; }

/* ── 通用容器 ── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }

/* ── Hero ── */
.hero {
  padding: 160px 24px 100px; text-align: center;
  max-width: 740px; margin: 0 auto; position: relative; z-index: 1;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 16px; border-radius: 20px; font-size: 12px; font-weight: 500;
  color: var(--color-accent); background: var(--color-accent-bg);
  border: 1px solid rgba(119,136,255,.12); margin-bottom: 32px; letter-spacing: .03em;
}
.hero h1 {
  font-size: clamp(36px, 6vw, 56px); font-weight: 700;
  letter-spacing: -0.04em; line-height: 1.12; margin-bottom: 20px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--color-accent), var(--color-purple));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero .sub {
  font-size: clamp(15px, 2vw, 18px); color: var(--color-text-secondary);
  line-height: 1.8; margin-bottom: 40px;
}
.hero .cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ── 按钮 ── */
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 36px; background: var(--color-accent); color: #fff;
  border: none; border-radius: var(--radius-lg);
  font-size: 15px; font-weight: 500; cursor: pointer;
  transition: all .2s; box-shadow: 0 4px 24px rgba(119,136,255,.2);
}
.btn-primary:hover { background: var(--color-accent-hover); transform: translateY(-1px); box-shadow: 0 8px 32px rgba(119,136,255,.3); }
.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 36px; background: transparent; color: var(--color-text-primary);
  border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  font-size: 15px; cursor: pointer; transition: all var(--transition-fast);
}
.btn-secondary:hover { border-color: var(--color-border-focus); background: var(--color-bg-elevated); }

/* ── Section 通用 ── */
.section { padding: 100px 0; }
.section-label {
  font-size: 12px; font-weight: 600; letter-spacing: .12em;
  color: var(--color-accent); text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(24px, 4vw, 36px); font-weight: 700;
  letter-spacing: -0.03em; line-height: 1.2; margin-bottom: 16px;
}
.section-desc {
  font-size: 16px; color: var(--color-text-secondary);
  line-height: 1.7; max-width: 560px;
}
.section-header { text-align: center; margin-bottom: 56px; }
.section-header .section-desc { margin: 0 auto; }

/* ── 服务卡片 ── */
.services-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.service-card {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 22px 18px;
  transition: all var(--transition-normal);
}
.service-card:hover { border-color: var(--color-border-focus); transform: translateY(-3px); }
.service-icon {
  width: 40px; height: 40px; border-radius: var(--radius-sm);
  background: var(--color-accent-bg); display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.service-icon svg { width: 20px; height: 20px; stroke: var(--color-accent); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.service-card h3 { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.service-card p { font-size: 13px; color: var(--color-text-secondary); line-height: 1.6; }
.service-tag {
  display: inline-block; margin-top: 10px; font-size: 11px; font-weight: 500;
  padding: 3px 10px; border-radius: 10px;
  background: var(--color-accent-bg); color: var(--color-text-tertiary);
}

/* ── 作品集网格 ── */
.portfolio-section { padding: 100px 0; }
.portfolio-filter {
  display: flex; gap: 8px; justify-content: center; flex-wrap: wrap;
  margin-bottom: 40px;
}
.filter-btn {
  padding: 8px 20px; border-radius: 20px; font-size: 13px; font-weight: 500;
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  color: var(--color-text-secondary); cursor: pointer;
  transition: all var(--transition-fast);
}
.filter-btn:hover { border-color: var(--color-border-focus); color: var(--color-text-primary); }
.filter-btn.active { background: var(--color-accent-bg); border-color: var(--color-accent); color: var(--color-accent); }

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}
.portfolio-item {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  aspect-ratio: 3/4; background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal); cursor: pointer;
}
.portfolio-item:hover { border-color: var(--color-border-focus); transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.portfolio-item img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .6s ease;
}
.portfolio-item:hover img { transform: scale(1.03); }
.portfolio-item .overlay {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 20px; background: linear-gradient(transparent, rgba(0,0,0,.7));
  opacity: 0; transition: opacity var(--transition-normal);
}
.portfolio-item:hover .overlay { opacity: 1; }
.overlay-tag {
  display: inline-block; padding: 3px 10px; border-radius: 8px;
  font-size: 11px; font-weight: 500;
  background: rgba(255,255,255,.15); color: #fff;
  backdrop-filter: blur(8px);
}

/* ── 数据统计条 ── */
.stats-bar {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  padding: 48px 0; border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border);
}
.stat-item { text-align: center; }
.stat-num { font-size: 36px; font-weight: 700; letter-spacing: -0.02em; color: var(--color-accent); }
.stat-label { font-size: 13px; color: var(--color-text-tertiary); margin-top: 4px; }

/* ── 关于我们 ── */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.about-text h2 { font-size: 28px; font-weight: 700; margin-bottom: 16px; letter-spacing: -0.02em; }
.about-text p { font-size: 15px; color: var(--color-text-secondary); line-height: 1.8; margin-bottom: 12px; }
.about-highlights {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 24px;
}
.highlight-item {
  padding: 20px; border-radius: var(--radius-md);
  background: var(--color-bg-card); border: 1px solid var(--color-border);
}
.highlight-item .num { font-size: 24px; font-weight: 700; color: var(--color-accent); }
.highlight-item .label { font-size: 12px; color: var(--color-text-tertiary); margin-top: 4px; }

/* ── 联系 ── */
.contact-section {
  text-align: center; padding: 80px 0;
}
.contact-card {
  max-width: 560px; margin: 0 auto; padding: 48px;
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}
.contact-card h2 { font-size: 24px; font-weight: 600; margin-bottom: 12px; }
.contact-card p { font-size: 15px; color: var(--color-text-secondary); margin-bottom: 28px; line-height: 1.7; }
.contact-methods { display: flex; flex-direction: column; gap: 12px; text-align: left; }
.contact-row {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 18px; border-radius: var(--radius-md);
  background: var(--color-bg-elevated); font-size: 14px;
}
.contact-row svg { width: 18px; height: 18px; stroke: var(--color-accent); fill: none; stroke-width: 2; flex-shrink: 0; }
.contact-row .label { color: var(--color-text-tertiary); min-width: 56px; }
.contact-row .value { color: var(--color-text-primary); font-weight: 500; }

/* ── 页脚 ── */
.footer {
  text-align: center; padding: 32px 24px;
  font-size: 12px; color: var(--color-text-tertiary);
  border-top: 1px solid var(--color-border);
  position: relative; z-index: 1;
}
.footer a { color: var(--color-text-tertiary); transition: color var(--transition-fast); }
.footer a:hover { color: var(--color-text-secondary); }
.footer .beian { margin-top: 8px; }
.footer .beian img { display: inline; width: 14px; height: 14px; vertical-align: text-bottom; margin-right: 4px; }

/* ── Lightbox ── */
.lightbox {
  display: none; position: fixed; inset: 0; z-index: 200;
  background: rgba(0,0,0,.92); backdrop-filter: blur(12px);
  align-items: center; justify-content: center;
}
.lightbox.active { display: flex; }
.lightbox img { max-width: 90vw; max-height: 85vh; object-fit: contain; border-radius: var(--radius-md); }
.lightbox-close {
  position: absolute; top: 20px; right: 20px;
  width: 40px; height: 40px; border-radius: 50%;
  background: rgba(255,255,255,.1); border: none; color: #fff;
  font-size: 20px; cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: background var(--transition-fast);
}
.lightbox-close:hover { background: rgba(255,255,255,.2); }

/* ── 定价卡片 ── */
.pricing-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.pricing-card {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 32px 28px;
  transition: all var(--transition-normal); position: relative; overflow: hidden;
}
.pricing-card:hover { border-color: var(--color-accent); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.pricing-card.featured { border-color: rgba(119,136,255,.3); }
.pricing-card.featured::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-purple));
}
.pricing-icon {
  width: 52px; height: 52px; border-radius: var(--radius-md);
  background: var(--color-accent-bg); display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.pricing-icon svg { width: 26px; height: 26px; stroke: var(--color-accent); fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.pricing-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.pricing-card .price { font-size: 32px; font-weight: 700; color: var(--color-accent); margin-bottom: 4px; letter-spacing: -0.02em; }
.pricing-card .price-unit { font-size: 14px; font-weight: 400; color: var(--color-text-secondary); }
.pricing-card .price-desc { font-size: 13px; color: var(--color-text-tertiary); line-height: 1.6; margin-top: 12px; }
.pricing-card .price-desc li { list-style: none; padding: 4px 0; position: relative; padding-left: 18px; }
.pricing-card .price-desc li::before { content: ''; position: absolute; left: 0; top: 11px; width: 6px; height: 6px; border-radius: 50%; background: var(--color-accent); opacity: .5; }
.pricing-note { text-align: center; margin-top: 24px; font-size: 13px; color: var(--color-text-tertiary); }

/* ── 交付流程时间线 ── */
.timeline { position: relative; max-width: 720px; margin: 0 auto; }
.timeline::before {
  content: ''; position: absolute; left: 28px; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-purple), transparent);
}
.timeline-step {
  display: flex; gap: 24px; padding-bottom: 40px; position: relative;
}
.timeline-step:last-child { padding-bottom: 0; }
.timeline-dot {
  width: 56px; height: 56px; border-radius: 50%; flex-shrink: 0;
  background: var(--color-bg-card); border: 2px solid var(--color-accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 700; color: var(--color-accent);
  position: relative; z-index: 1;
}
.timeline-step:hover .timeline-dot { background: var(--color-accent-bg); }
.timeline-content {
  padding-top: 12px;
}
.timeline-content h4 { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.timeline-content p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* ── 下单表单 ── */
.order-form-card {
  max-width: 640px; margin: 0 auto; padding: 48px;
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}
.form-group { margin-bottom: 24px; }
.form-group label {
  display: block; font-size: 13px; font-weight: 500; color: var(--color-text-secondary);
  margin-bottom: 8px; letter-spacing: .02em;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 12px 16px; font-size: 14px;
  background: var(--color-bg-elevated); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); color: var(--color-text-primary);
  font-family: inherit; transition: border-color var(--transition-fast);
  outline: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--color-accent); }
.form-input::placeholder, .form-textarea::placeholder { color: var(--color-text-tertiary); }
.form-select { appearance: none; cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,.4)' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }
.form-select option { background: #1a1a1a; }
.form-textarea { resize: vertical; min-height: 100px; }
.form-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; }
.btn-wechat {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 36px; background: #07c160; color: #fff;
  border: none; border-radius: var(--radius-lg);
  font-size: 15px; font-weight: 500; cursor: pointer;
  transition: all .2s; font-family: inherit;
}
.btn-wechat:hover { background: #06ad56; transform: translateY(-1px); }
.btn-wechat:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.btn-wechat svg { width: 20px; height: 20px; fill: currentColor; }

/* ── 联系卡片（下单页） ── */
.order-contact {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px; max-width: 640px; margin: 0 auto;
}
.order-contact-item {
  display: flex; align-items: center; gap: 14px;
  padding: 18px 22px; border-radius: var(--radius-lg);
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  transition: border-color var(--transition-fast);
}
.order-contact-item:hover { border-color: var(--color-border-focus); }
.order-contact-item .oci-icon {
  width: 42px; height: 42px; border-radius: var(--radius-md);
  background: var(--color-accent-bg); display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.order-contact-item .oci-icon svg { width: 20px; height: 20px; stroke: var(--color-accent); fill: none; stroke-width: 2; }
.order-contact-item .oci-label { font-size: 12px; color: var(--color-text-tertiary); }
.order-contact-item .oci-value { font-size: 15px; font-weight: 500; margin-top: 2px; }

/* ── 移动端适配 ── */
@media (max-width: 768px) {
  .nav { height: 52px; }
  .nav-links { gap: 20px; }
  .nav-links a:not(.nav-cta) { display: none; }
  .hero { padding: 120px 20px 60px; }
  .section { padding: 60px 0; }
  .services-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .about-highlights { grid-template-columns: 1fr 1fr; }
  .contact-card { padding: 32px 24px; }
  .pricing-grid { grid-template-columns: 1fr; }
  .timeline::before { left: 22px; }
  .timeline-dot { width: 44px; height: 44px; font-size: 15px; }
  .timeline-step { gap: 16px; }
  .order-form-card { padding: 28px 20px; }
  .form-row { grid-template-columns: 1fr; }
  .form-actions { flex-direction: column; }
  .form-actions .btn-primary, .form-actions .btn-wechat, .form-actions .btn-secondary { width: 100%; justify-content: center; }
}
@media (max-width: 480px) {
  .portfolio-grid { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
}