#loader {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #fff7f2, #fff);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity .5s ease, visibility .5s ease;
}
#loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
#loader .spinner {
  width: 48px;
  height: 48px;
  border: 4px solid rgba(255,224,210,0.45);
  border-top-color: var(--orange, #ff652c);
  border-radius: 50%;
  animation: spin .8s linear infinite;
  filter: drop-shadow(0 0 8px rgba(255,101,44,0.35));
}
#loader p {
  margin-top: 16px;
  font-size: 13px;
  color: #999;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── 页面内容淡入 ── */
#page-content {
  opacity: 0;
  transition: opacity .6s ease;
}
#page-content.show {
  opacity: 1;
}

/* ── 全局变量 + 动态背景 ── */
:root {
  --orange: #ff652c;
  --deep: #ee4f22;
  --ink: #272727;
  --muted: #666;
  --line: #ffd0be;
  --glass: rgba(255,255,255,0.68);
  --glass-border: rgba(255,255,255,0.85);
  --shadow-soft: 0 8px 28px rgba(255,101,44,0.12);
  --shadow-deep: 0 12px 36px rgba(255,101,44,0.18);
  --radius-xl: 18px;
  --radius-lg: 14px;
  --radius-md: 10px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Segoe UI', Roboto, Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: #fff7f2;
  background-image:
    radial-gradient(circle at 12% 15%, rgba(255,101,44,0.14) 0%, transparent 40%),
    radial-gradient(circle at 85% 70%, rgba(255,176,138,0.12) 0%, transparent 42%);
  background-attachment: fixed;
  font-size: 14px;
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
.wrap { max-width: 1060px; margin: auto; padding: 0 24px; }

.top {
  background: linear-gradient(135deg, #ff7c48, var(--orange), var(--deep));
  color: white;
  text-align: center;
  padding: 14px 20px 36px;
  clip-path: polygon(0 0, 100% 0, 100% 91%, 50% 100%, 0 91%);
  box-shadow: 0 10px 30px rgba(255,101,44,0.25);
}
.brand { font-size: 20px; font-weight: 900; letter-spacing: .4px; text-shadow: 0 2px 6px rgba(0,0,0,0.08); }
.top small { display: block; font-size: 11px; opacity: 0.92; }
.top h1 { font-size: clamp(21px, 3vw, 32px); margin: 12px 0 4px; text-shadow: 0 2px 8px rgba(0,0,0,0.06); }

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
  padding: 42px 0;
}
.hero h2 { font-size: clamp(25px, 3.5vw, 39px); line-height: 1.2; margin: 0 0 12px; }
.hero p { color: var(--muted); }
.check { list-style: none; padding: 0; }
.check li {
  padding: 6px 0;
  transition: transform 0.2s ease;
}
.check li:hover { transform: translateX(4px); }
.check li:before { content: '✓'; color: var(--orange); font-weight: 900; margin-right: 10px; }

.cta {
  display: inline-block;
  border: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, #ff7c48, var(--orange), var(--deep));
  color: white;
  text-decoration: none;
  font-weight: 800;
  padding: 14px 28px;
  box-shadow: 0 8px 20px rgba(255,101,44,0.32);
  cursor: pointer;
  transition: all 0.22s ease;
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(255,255,255,0.22), transparent 60%);
  opacity: 0;
  transition: opacity 0.22s ease;
}
.cta:hover::before { opacity: 1; }
.cta:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(255,101,44,0.38); }
.cta:active { transform: translateY(0); box-shadow: 0 6px 14px rgba(255,101,44,0.28); }

.phones { height: auto; min-height: 270px; display: flex; justify-content: center; align-items: center; }
.hero-original {
  width: 100%;
  height: auto;
  max-height: 370px;
  object-fit: contain;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-deep);
  transform: translateY(0);
  transition: transform 0.3s ease;
}
.hero-original:hover { transform: translateY(-6px); }

.section { padding: 36px 0; }
.section h2 { color: var(--orange); font-size: 23px; text-align: center; margin: 0 0 17px; }
.section h2:after {
  content: '';
  display: block;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
  max-width: 320px;
  margin: 9px auto 0;
  border-radius: 999px;
}
.section > p, .intro { text-align: center; color: var(--muted); }

.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,184,164,0.35);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}
.table th, .table td { padding: 12px 16px; border-bottom: 1px solid rgba(255,210,190,0.28); text-align: left; }
.table tr:nth-child(odd) { background: rgba(255,243,237,0.35); }
.table th { width: 38%; font-weight: 700; }
.table .bar {
  background: linear-gradient(135deg, var(--orange), var(--deep));
  color: white;
}

.gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin: 24px 0; }
.photo {
  margin: 0;
  background: var(--glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.7);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.photo:hover { transform: translateY(-5px); box-shadow: var(--shadow-deep); }
.photo img { display: block; width: 100%; height: 180px; object-fit: cover; }
.photo figcaption { font-size: 12px; font-weight: 700; padding: 10px; }

.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.feature {
  position: relative;
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,189,166,0.38);
  border-radius: var(--radius-lg);
  padding: 28px 20px 20px;
  text-align: center;
  margin-top: 22px;
  box-shadow: var(--shadow-soft);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.feature:hover { transform: translateY(-4px); box-shadow: var(--shadow-deep); }
.feature-icon {
  position: absolute; top: -18px; left: 50%; transform: translateX(-50%);
  width: 40px; height: 40px; display: grid; place-items: center;
  background: var(--glass);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 2px solid var(--orange);
  border-radius: 50%;
  font-size: 21px; color: var(--orange);
  box-shadow: 0 4px 12px rgba(255,101,44,0.22);
}
.feature h3 { font-size: 16px; margin: 0 0 7px; }
.feature p { color: var(--muted); margin: 0; }

.step-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.step {
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,211,195,0.38);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-soft);
  transition: transform 0.22s ease;
}
.step:hover { transform: translateY(-3px); }
.step-number {
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--orange), var(--deep));
  color: #fff;
  border-radius: 50%;
  height: 38px; width: 38px;
  font-weight: 900;
  box-shadow: 0 4px 12px rgba(255,101,44,0.24);
}
.step h3 { font-size: 15px; margin: 10px 0 4px; }
.step p { font-size: 12px; color: var(--muted); }

.pros { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.pros article {
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,208,190,0.38);
  padding: 22px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  transition: transform 0.22s ease;
}
.pros article:hover { transform: translateY(-3px); }
.pros h3 { margin-top: 0; color: var(--orange); }
.pros li { margin: 6px 0; }

details {
  background: var(--glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255,212,197,0.38);
  border-radius: var(--radius-md);
  margin: 10px 0;
  padding: 14px 16px;
  box-shadow: var(--shadow-soft);
  transition: all 0.2s ease;
}
details[open] { box-shadow: 0 10px 24px rgba(255,101,44,0.14); }
summary { cursor: pointer; font-weight: 700; color: #e9562a; }
details p { color: var(--muted); margin: 9px 0 0; }

.footer {
  background: linear-gradient(135deg, var(--orange), var(--deep));
  color: white;
  text-align: center;
  padding: 28px;
  margin-top: 40px;
  box-shadow: 0 -10px 30px rgba(255,101,44,0.16);
}
.notice {
  background: rgba(255,246,237,0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-left: 4px solid var(--orange);
  padding: 14px;
  color: #784b35;
  border-radius: 0 8px 8px 0;
}

@media (max-width: 700px) {
  .wrap { padding: 0 15px; }
  .hero { grid-template-columns: 1fr; padding: 24px 0; gap: 24px; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: 1fr; }
  .step-grid { grid-template-columns: 1fr 1fr; }
  .pros { grid-template-columns: 1fr; }
  .section { padding: 28px 0; }
  .section h2 { font-size: 20px; }
  .cta { width: 100%; text-align: center; }
}