@charset "UTF-8";

:root {
  --paper: #f4eee4;
  --paper-deep: #eadfce;
  --white: #fffaf3;
  --ink: #2a231c;
  --muted: #6f6458;
  --rose: #c45c78;
  --rose-deep: #9a3d58;
  --olive: #5a6b42;
  --olive-soft: #e4ead6;
  --seal: #8b2e2e;
  --line: #d9ccb8;
  --hard: 7px 7px 0 rgba(90, 107, 66, 0.22);
  --hard-rose: 7px 7px 0 rgba(196, 92, 120, 0.22);
  --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:
    repeating-linear-gradient(0deg, transparent, transparent 27px, rgba(196, 92, 120, 0.05) 28px),
    var(--paper);
  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: 92px 0; overflow: hidden; }
.kicker { color: var(--rose-deep); font-size: 12px; font-weight: 800; letter-spacing: 0.2em; margin-bottom: 10px; }
.section-head { max-width: 620px; 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(244, 238, 228, 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; align-items: center; gap: 10px; }
.brand img { width: 40px; height: 40px; border-radius: 10px; object-fit: cover; box-shadow: var(--hard-rose); }
.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(--olive-soft); color: var(--olive); }
.btn, .header-cta {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 18px; border-radius: 999px; font-size: 13px; font-weight: 800;
}
.header-cta, .btn-rose { background: var(--rose); color: #fff; box-shadow: var(--hard-rose); }
.btn-olive { background: var(--olive); color: #fff; box-shadow: var(--hard); }
.btn-ghost { border: 1.5px solid var(--ink); background: var(--white); }
.header-cta:hover, .btn-rose:hover, .btn-olive: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 {
  position: relative; padding: 48px 0 80px;
  background:
    radial-gradient(circle at 88% 18%, rgba(196, 92, 120, 0.16), transparent 36%),
    linear-gradient(180deg, #efe4d4 0%, var(--paper) 70%);
}
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 18px;
  background: repeating-linear-gradient(90deg, var(--rose) 0 18px, var(--olive) 18px 36px, var(--paper-deep) 36px 54px);
}
.hero-inner { display: grid; grid-template-columns: 0.92fr 1.08fr; gap: 36px; align-items: center; }
.hero h1 { font-size: clamp(44px, 6.4vw, 76px); font-weight: 900; letter-spacing: -0.05em; line-height: 0.94; }
.hero h1 em { display: block; margin-top: 10px; font-style: normal; font-size: 0.36em; color: var(--rose); font-weight: 700; letter-spacing: 0.02em; }
.hero-lead { margin-top: 18px; max-width: 460px; color: var(--muted); font-size: 16px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.hero-meta { display: flex; gap: 16px; margin-top: 18px; font-size: 13px; font-weight: 700; color: var(--olive); }

.letter-desk {
  position: relative; min-height: 520px;
}
.letter-sheet {
  position: relative; z-index: 2; width: min(100%, 420px); margin-left: auto;
  padding: 22px 22px 18px; border-radius: 4px 28px 18px 18px;
  background: var(--white); border: 1.5px solid var(--line); box-shadow: var(--hard);
  background-image: linear-gradient(90deg, transparent 36px, rgba(196, 92, 120, 0.18) 37px, transparent 38px);
}
.letter-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; padding-left: 28px; }
.letter-head strong { font-size: 14px; }
.letter-head span { font-size: 11px; color: var(--rose); font-weight: 800; }
.slider { margin: 12px 0 12px 28px; }
.slider label { display: flex; justify-content: space-between; font-size: 12px; font-weight: 700; margin-bottom: 6px; }
.bar { height: 8px; border-radius: 99px; background: var(--paper-deep); overflow: hidden; }
.bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--olive), var(--rose)); }
.letter-note {
  margin: 8px 0 0 28px; padding: 12px; border-radius: 12px; background: var(--olive-soft);
  font-size: 12px; color: var(--ink);
}
.wax {
  position: absolute; right: 18px; bottom: -18px; width: 64px; height: 64px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #c24a4a, var(--seal));
  color: #fff; display: grid; place-items: center; font-size: 11px; font-weight: 900; letter-spacing: 0.08em;
  box-shadow: 0 8px 16px rgba(139, 46, 46, 0.35);
}
.polaroid {
  position: absolute; z-index: 3; width: 132px; padding: 8px 8px 22px; background: #fff; border: 1px solid var(--line);
  box-shadow: var(--hard-rose); animation: sway 5s ease-in-out infinite;
}
.polaroid img { width: 100%; aspect-ratio: 3/4; object-fit: cover; }
.polaroid span { display: block; margin-top: 6px; font-size: 11px; text-align: center; font-weight: 700; }
.polaroid.p1 { left: -10px; top: 20px; transform: rotate(-8deg); }
.polaroid.p2 { left: 10px; bottom: 10px; transform: rotate(6deg); animation-delay: -1.6s; }
@keyframes sway { 0%,100%{ transform: translateY(0) rotate(var(--r, -8deg)); } 50%{ transform: translateY(-8px) rotate(var(--r, -8deg)); } }
.phone-lean {
  position: absolute;
  z-index: 1;
  right: 8px;
  top: 70px;
  width: 150px;
  border-radius: 22px;
  overflow: hidden;
  border: 3px solid #fff;
  box-shadow: var(--hard);
  transform: rotate(8deg);
}
.phone-lean img { width: 100%; aspect-ratio: 9/16; object-fit: cover; }

.desk-section { background: var(--white); }
.persona {
  display: grid; grid-template-columns: 1fr 1fr; gap: 18px;
}
.persona article {
  padding: 26px; border-radius: 22px; border: 1.5px dashed var(--line); background: var(--paper);
  box-shadow: var(--hard);
}
.persona article:nth-child(2) { background: var(--olive-soft); transform: translateY(18px); }
.persona article:nth-child(3) { background: #f3dce3; }
.persona article:nth-child(4) { background: var(--ink); color: #f4eee4; transform: translateY(12px); }
.persona h3 { font-size: 20px; margin: 8px 0 10px; }
.persona p { color: var(--muted); font-size: 14px; }
.persona article:nth-child(4) p { color: #c9b8a8; }

.string-row { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding-top: 24px; }
.string-row::before {
  content: ""; position: absolute; left: 4%; right: 4%; top: 8px; height: 2px; background: var(--rose); opacity: 0.5;
}
.clip-card {
  background: var(--white); padding: 10px 10px 16px; border: 1.5px solid var(--line); box-shadow: var(--hard);
  transform-origin: top center;
}
.clip-card:nth-child(odd) { transform: rotate(-3deg) translateY(10px); }
.clip-card:nth-child(even) { transform: rotate(3deg) translateY(-8px); }
.clip-card img { width: 100%; aspect-ratio: 9/16; object-fit: cover; }
.clip-card figcaption { margin-top: 8px; text-align: center; font-size: 12px; font-weight: 800; color: var(--rose-deep); }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 32px 20px; }
.stat:nth-child(1) { background: var(--rose); color: #fff; }
.stat:nth-child(2) { background: var(--olive); color: #fff; }
.stat:nth-child(3) { background: var(--ink); color: #fff; }
.stat:nth-child(4) { background: #d7b56a; color: var(--ink); }
.stat strong { display: block; font-size: clamp(28px, 3.6vw, 40px); font-weight: 900; }
.stat span { font-size: 13px; font-weight: 700; }

.compare-wrap { overflow-x: auto; border: 1.5px solid var(--line); background: var(--white); box-shadow: var(--hard); }
.compare-table { width: 100%; min-width: 720px; border-collapse: collapse; font-size: 13px; }
.compare-table th, .compare-table td { padding: 13px 14px; text-align: center; border-bottom: 1px solid var(--paper-deep); }
.compare-table th:first-child, .compare-table td:first-child { text-align: left; font-weight: 700; }
.compare-table thead th { background: var(--ink); color: #fff; }
.compare-table thead th.hl { background: var(--rose); }
.compare-table .hl { color: var(--rose-deep); font-weight: 800; }

.postcards { display: grid; gap: 14px; }
.card-step { display: grid; grid-template-columns: 70px 1fr; gap: 14px; background: var(--white); border: 1.5px solid var(--line); box-shadow: var(--hard); }
.card-step:nth-child(even) { box-shadow: var(--hard-rose); }
.stamp { display: grid; place-items: center; background: var(--olive-soft); font-size: 22px; font-weight: 900; color: var(--olive); }
.card-step:nth-child(even) .stamp { background: #f3dce3; color: var(--rose-deep); }
.body { padding: 16px 18px; }
.body h3 { font-size: 16px; margin-bottom: 6px; }
.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(--white); border: 1.5px solid var(--line); overflow: hidden; }
.faq-item.is-open { box-shadow: var(--hard-rose); border-color: var(--rose); }
.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(--white); border-top: 6px solid var(--rose); box-shadow: var(--hard); }
.review-card:nth-child(2) { transform: translateY(16px); border-top-color: var(--olive); }
.review-card:nth-child(3) { border-top-color: #d7b56a; }
.review-card p { font-size: 13.5px; margin: 8px 0 12px; }
.review-card footer { color: var(--muted); font-size: 12px; }

.download {
  padding: 80px 0; background: linear-gradient(135deg, #ead3c4, #dfe6cc 50%, #f4eee4);
}
.envelope {
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 24px; align-items: center;
  padding: 36px; background: var(--white); border: 1.5px solid var(--line); box-shadow: var(--hard-rose);
  position: relative;
}
.envelope::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 14px;
  background: linear-gradient(135deg, transparent 40%, var(--rose) 41%, var(--rose) 59%, transparent 60%);
  opacity: 0.35;
}
.envelope h2 { font-size: clamp(26px, 3.6vw, 38px); margin: 8px 0 12px; }
.envelope p { color: var(--muted); margin-bottom: 18px; }
.dl-links { display: flex; flex-wrap: wrap; gap: 10px; }
.seal-brand { text-align: center; }
.seal-brand img { width: 92px; height: 92px; margin: 0 auto 10px; border-radius: 50%; box-shadow: var(--hard-rose); object-fit: cover; }

.site-footer { padding: 48px 0 24px; background: #241d18; color: #b7aa9c; }
.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(244,238,228,0.98); 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, .persona, .envelope, .footer-grid { grid-template-columns: 1fr; }
  .hero-copy { order: 1; }
  .letter-desk { order: 2; }
  .polaroid, .phone-lean { display: none; }
  .letter-sheet { margin: 0 auto; }
  .persona article:nth-child(n) { transform: none; }
  .string-row { grid-template-columns: 1fr 1fr; }
  .clip-card:nth-child(n) { transform: none; }
  .stats { grid-template-columns: 1fr 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .review-card:nth-child(2) { transform: none; }
}
@media (max-width: 560px) {
  .section { padding: 64px 0; }
  .dl-links a { width: 100%; }
}
@media (prefers-reduced-motion: reduce) { .polaroid { animation: none; } }