@charset "UTF-8";

:root {
  --sand: #efe4cf;
  --foam: #fff8ea;
  --ink: #2a1f14;
  --muted: #6d5c48;
  --brass: #b8862b;
  --brass-deep: #8a6418;
  --indigo: #3d2b6b;
  --indigo-soft: #ece6f6;
  --teal: #1f8a7a;
  --line: #dcc9a8;
  --hard: 8px 8px 0 rgba(61, 43, 107, 0.2);
  --hard-b: 8px 8px 0 rgba(184, 134, 43, 0.28);
  --shell: 1160px;
  --header-h: 72px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 14px); }
body {
  margin: 0;
  padding-top: var(--header-h);
  color: var(--ink);
  background:
    radial-gradient(circle at 80% 8%, rgba(61, 43, 107, 0.1), transparent 36%),
    repeating-linear-gradient(-18deg, rgba(42, 31, 20, 0.03) 0 2px, transparent 2px 18px),
    var(--sand);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  line-height: 1.7;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button { border: 0; background: none; color: inherit; font: inherit; cursor: pointer; }
img { display: block; max-width: 100%; }
h1, h2, h3, p, ul, figure { margin: 0; padding: 0; }
ul { list-style: none; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.shell { width: min(calc(100% - 40px), var(--shell)); margin: 0 auto; }
.section { padding: 88px 0; }
.kicker { color: var(--brass-deep); font-size: 12px; font-weight: 800; letter-spacing: 0.2em; margin-bottom: 10px; }
.section-head { max-width: 640px; margin-bottom: 42px; }
.section-head h2 { font-size: clamp(28px, 3.6vw, 42px); font-weight: 800; letter-spacing: -0.03em; }
.section-head p { margin-top: 10px; color: var(--muted); }

.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 1000; height: var(--header-h);
  background: rgba(239, 228, 207, 0.92); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px);
}
.header-inner { display: flex; height: 100%; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: inline-flex; gap: 10px; align-items: center; }
.brand img { width: 40px; height: 40px; border-radius: 12px; object-fit: cover; box-shadow: var(--hard-b); }
.brand strong { display: block; font-size: 16px; }
.brand small { display: block; color: var(--muted); font-size: 11px; }
.site-nav ul { display: flex; gap: 2px; }
.site-nav a { display: block; padding: 8px 12px; border-radius: 999px; font-size: 14px; font-weight: 600; color: var(--muted); }
.site-nav a.is-current, .site-nav a:hover { background: var(--indigo-soft); color: var(--indigo); }
.btn, .header-cta {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 18px; border-radius: 12px; font-size: 13px; font-weight: 800;
}
.header-cta, .btn-brass { background: var(--brass); color: #fff; box-shadow: var(--hard-b); }
.btn-indigo { background: var(--indigo); color: #fff; box-shadow: var(--hard); }
.btn-ghost { border: 1.5px solid var(--ink); background: var(--foam); }
.header-cta:hover, .btn-brass:hover, .btn-indigo:hover, .btn-ghost:hover { transform: translate(-2px, -2px); }
.mobile-tools { display: none; gap: 8px; align-items: center; }
.menu-toggle { width: 40px; height: 40px; border: 1px solid var(--line); border-radius: 10px; display: grid; place-items: center; }
.menu-toggle span, .menu-toggle span::before, .menu-toggle span::after {
  display: block; width: 16px; height: 2px; background: var(--ink); position: relative;
}
.menu-toggle span::before, .menu-toggle span::after { content: ""; position: absolute; left: 0; }
.menu-toggle span::before { top: -5px; } .menu-toggle span::after { top: 5px; }

.hero { padding: 48px 0 72px; }
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: center; }
.hero-copy { order: 1; }
.hero-visual { order: 2; }
.hero h1 { font-size: clamp(42px, 6.2vw, 72px); font-weight: 900; letter-spacing: -0.05em; line-height: 0.96; }
.hero h1 em { display: block; margin-top: 10px; font-style: normal; font-size: 0.36em; color: var(--indigo); font-weight: 700; }
.hero-lead { margin-top: 18px; max-width: 460px; color: var(--muted); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 16px; font-size: 13px; font-weight: 700; color: var(--brass-deep); }

.quiz {
  position: relative;
  padding: 18px;
  border-radius: 24px;
  background: var(--indigo);
  color: #efe8ff;
  box-shadow: 16px 18px 0 rgba(184, 134, 43, 0.3);
}
.quiz-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; font-size: 12px; font-weight: 800; letter-spacing: 0.12em; color: #d4b45a; }
.quiz-face {
  display: grid; grid-template-columns: 88px 1fr; gap: 12px; align-items: center;
  padding: 12px; border-radius: 16px; background: rgba(255,255,255,0.08); margin-bottom: 14px;
}
.quiz-face img { width: 88px; height: 110px; object-fit: cover; border-radius: 12px; }
.quiz-q { font-size: 16px; font-weight: 800; color: #fff; line-height: 1.4; }
.opts { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.opts button {
  padding: 10px 8px; border-radius: 10px; background: rgba(255,255,255,0.1); color: #fff; font-size: 12px; font-weight: 800;
}
.opts button.is-on { background: var(--brass); }
.meter { margin-top: 14px; }
.meter span { display: flex; justify-content: space-between; font-size: 11px; font-weight: 700; margin-bottom: 6px; }
.meter i { display: block; height: 8px; width: 62%; border-radius: 99px; background: linear-gradient(90deg, var(--teal), var(--brass)); }
.meter-track { height: 8px; border-radius: 99px; background: rgba(255,255,255,0.12); overflow: hidden; }
.float-chip {
  position: absolute; z-index: 2; padding: 10px 12px; border-radius: 12px; background: var(--foam); color: var(--ink);
  font-size: 12px; font-weight: 800; box-shadow: var(--hard-b); animation: bob 4.8s ease-in-out infinite;
}
.float-chip.a { top: -12px; right: -8px; }
.float-chip.b { bottom: 18px; left: -12px; animation-delay: -1.5s; box-shadow: var(--hard); }
@keyframes bob { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-8px)} }

.lamps {
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 16px;
}
.lamp {
  padding: 26px; border-radius: 20px; background: var(--foam); border: 1.5px solid var(--line); box-shadow: var(--hard);
}
.lamp:nth-child(1) { background: var(--indigo); color: #fff; border: 0; }
.lamp:nth-child(2) { background: var(--brass); color: #fff; border: 0; box-shadow: var(--hard-b); }
.lamp h3 { font-size: 20px; margin: 8px 0 10px; }
.lamp p { font-size: 14px; color: var(--muted); }
.lamp:nth-child(1) p, .lamp:nth-child(2) p { color: rgba(255,255,255,0.9); }

.shots {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; align-items: end;
}
.shot {
  background: var(--foam); border: 2px solid var(--indigo); overflow: hidden; box-shadow: var(--hard);
}
.shot:nth-child(odd) { transform: translateY(-12px); }
.shot:nth-child(even) { transform: translateY(10px); }
.shot img { width: 100%; aspect-ratio: 9/16; object-fit: cover; }
.shot figcaption { padding: 8px 10px; background: var(--indigo); color: #fff; font-size: 11px; font-weight: 800; text-align: center; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 32px 18px; }
.stat:nth-child(1) { background: var(--indigo); color: #fff; }
.stat:nth-child(2) { background: var(--brass); color: #fff; }
.stat:nth-child(3) { background: var(--teal); color: #fff; }
.stat:nth-child(4) { background: #2a1f14; color: #fff; }
.stat strong { display: block; font-size: clamp(26px, 3.4vw, 38px); font-weight: 900; }
.stat span { font-size: 13px; font-weight: 700; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.step {
  padding: 22px; background: var(--foam); border-top: 6px solid var(--brass); box-shadow: var(--hard);
}
.step:nth-child(2) { transform: translateY(16px); border-top-color: var(--indigo); }
.step:nth-child(3) { border-top-color: var(--teal); }
.step h3 { font-size: 18px; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 14px; }

.guide { display: grid; gap: 12px; }
.g-row { display: grid; grid-template-columns: 70px 1fr; background: var(--foam); border: 1.5px solid var(--line); box-shadow: var(--hard); }
.g-row:nth-child(even) { box-shadow: var(--hard-b); }
.num { display: grid; place-items: center; background: var(--indigo-soft); font-weight: 900; color: var(--indigo); }
.g-row:nth-child(even) .num { background: #f3e6c4; color: var(--brass-deep); }
.g-body { padding: 16px 18px; }
.g-body h3 { font-size: 16px; margin-bottom: 6px; }
.g-body p { color: var(--muted); font-size: 13.5px; }

.faq-list { max-width: 800px; margin: 0 auto; display: grid; gap: 10px; }
.faq-item { background: var(--foam); border: 1.5px solid var(--line); overflow: hidden; }
.faq-item.is-open { box-shadow: var(--hard-b); border-color: var(--brass); }
.faq-trigger { width: 100%; display: flex; justify-content: space-between; gap: 12px; padding: 16px 18px; text-align: left; font-weight: 700; }
.faq-panel { max-height: 0; overflow: hidden; opacity: 0; transition: 0.3s; padding: 0 18px; }
.faq-item.is-open .faq-panel { max-height: 420px; opacity: 1; padding: 0 18px 16px; }
.faq-panel p { color: var(--muted); font-size: 13.5px; }

.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.review-card { padding: 22px; background: var(--foam); border-left: 6px solid var(--brass); box-shadow: var(--hard); }
.review-card:nth-child(2) { transform: translateY(14px); border-left-color: var(--indigo); }
.review-card:nth-child(3) { border-left-color: var(--teal); }
.review-card p { font-size: 13.5px; margin-bottom: 12px; }
.review-card footer { color: var(--muted); font-size: 12px; }

.download { padding: 80px 0; background: linear-gradient(135deg, #3d2b6b, #2a1f14 55%, #8a6418); color: #efe8d4; }
.lamp-plate {
  display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 24px; align-items: center;
  padding: 36px; border: 1.5px solid rgba(255,255,255,0.12); border-radius: 28px; position: relative;
}
.lamp-plate h2 { color: #fff; font-size: clamp(26px, 3.6vw, 38px); margin: 8px 0 12px; }
.lamp-plate p { margin-bottom: 18px; }
.dl-links { display: flex; flex-wrap: wrap; gap: 10px; }
.lp-brand { text-align: center; }
.lp-brand img { width: 92px; height: 92px; margin: 0 auto 10px; border-radius: 22px; box-shadow: var(--hard-b); object-fit: cover; }
.lp-brand strong { display: block; color: #fff; font-size: 20px; }

.site-footer { padding: 48px 0 24px; background: #1a140e; color: #b7a58c; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 24px; margin-bottom: 24px; }
.footer-grid h4 { color: #fff; font-size: 13px; margin-bottom: 10px; }
.footer-brand { display: flex; gap: 10px; align-items: center; margin-bottom: 8px; color: #fff; }
.footer-brand img { width: 34px; height: 34px; border-radius: 9px; object-fit: cover; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 16px; text-align: center; font-size: 12px; }

@media (max-width: 980px) {
  .site-nav, .header-inner > .header-cta { display: none; }
  .mobile-tools { display: flex; }
  .site-nav {
    display: block; position: fixed; top: var(--header-h); left: 0; right: 0;
    background: rgba(239,228,207,0.98); padding: 12px 18px 18px;
    transform: translateY(-120%); opacity: 0; pointer-events: none; transition: 0.3s;
  }
  body.menu-open .site-nav { transform: none; opacity: 1; pointer-events: auto; }
  .site-nav ul { flex-direction: column; }
  .hero-inner, .lamps, .lamp-plate, .footer-grid, .steps { grid-template-columns: 1fr; }
  .hero-copy { order: 1; }
  .hero-visual { order: 2; }
  .shots { grid-template-columns: 1fr 1fr; }
  .shot:nth-child(n) { transform: none; }
  .stats { grid-template-columns: 1fr 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .review-card:nth-child(2), .step:nth-child(2) { transform: none; }
  .float-chip { display: none; }
}
@media (max-width: 560px) {
  .section { padding: 64px 0; }
  .dl-links a { width: 100%; }
  .opts { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { .float-chip { animation: none; } }