:root {
  --ink: #12263A;
  --teal: #0C5F63;
  --teal-dark: #084548;
  --teal-soft: #E7F3F3;
  --cream: #F6F3ED;
  --paper: #FFFcf8;
  --gold: #8C6A2F;
  --line: #E4DED4;
  --muted: #5A6570;
  --ok: #0F6B56;
  --warn-bg: #F8F0E0;
  --warn-ink: #5C4A22;
  --radius: 16px;
  --zh: "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Noto Sans CJK SC", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, var(--zh);
  --display: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  --shadow: 0 10px 28px rgba(18, 38, 58, .06);
}
* { box-sizing: border-box }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 84px }
body {
  margin: 0;
  font: 17px/1.6 var(--sans);
  color: var(--ink);
  background: var(--cream);
}
a { color: var(--teal) }
a:hover { color: var(--teal-dark) }
.hidden { display: none !important }
.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--teal); color: #fff; padding: 8px 12px; z-index: 40;
}
.skip:focus { left: 8px; top: 8px }

.top {
  position: sticky; top: 0; z-index: 30;
  background: rgba(246, 243, 237, .94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.bar {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: calc(10px + env(safe-area-inset-top)) 18px 10px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: var(--ink);
  font-weight: 750; letter-spacing: -.03em; font-size: 16.5px;
  flex: none;
}
.logo {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: #0C5F63 url("icon.svg") center / cover no-repeat;
  flex: none;
}
.nav {
  display: flex; flex-wrap: wrap; gap: 2px 4px;
  flex: 1;
}
.nav a {
  text-decoration: none; color: var(--muted);
  font-size: 13.5px; font-weight: 650;
  padding: 8px 10px; border-radius: 8px;
}
.nav a:hover { color: var(--teal); background: var(--teal-soft) }
.bar-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; flex: none }
.lang {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
  background: var(--paper);
}
.lang button {
  appearance: none; border: 0; background: transparent;
  font: inherit; font-size: 12.5px; font-weight: 700;
  padding: 6px 10px; min-height: 34px; cursor: pointer; color: var(--muted);
}
.lang button[aria-pressed="true"] { background: var(--teal); color: #fff }
.menu {
  display: none;
  appearance: none; border: 1px solid var(--line);
  background: var(--paper); border-radius: 10px;
  width: 42px; height: 42px; cursor: pointer;
  font: inherit; font-weight: 700; color: var(--ink);
}

@media (max-width: 900px) {
  .menu { display: grid; place-items: center }
  .nav {
    display: none;
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 8px 12px 14px;
    box-shadow: var(--shadow);
  }
  .nav.open { display: flex }
  .nav a { padding: 12px 10px; font-size: 16px }
}

main { max-width: 1080px; margin: 0 auto; padding: 12px 18px 40px }
section { margin: 8px 0 36px }
h1, h2, h3 { letter-spacing: -.03em; line-height: 1.25 }
h1 { font-family: var(--display); font-size: clamp(30px, 5.4vw, 48px); margin: 8px 0 12px; font-weight: 650 }
h2 { font-size: clamp(22px, 3vw, 30px); margin: 0 0 12px }
h3 { font-size: 18px; margin: 0 0 8px }
.lead { font-size: 18.5px; color: var(--muted); margin: 0 0 18px; max-width: 40em }
.kicker {
  font-size: 12px; font-weight: 750; letter-spacing: .14em;
  text-transform: uppercase; color: var(--teal); margin: 0 0 6px;
}
.muted { color: var(--muted) }
.small { font-size: 13.5px; line-height: 1.55 }
.center { text-align: center }

.hero {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 36px 28px 30px;
  box-shadow: var(--shadow);
  overflow: hidden;
  margin-top: 16px;
}
.hero::before {
  content: "";
  position: absolute; left: 0; right: 0; top: 0; height: 6px;
  background: var(--teal);
}
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 18px }
.chip {
  background: var(--teal-soft); color: var(--teal-dark);
  border-radius: 999px; padding: 6px 12px;
  font-size: 13px; font-weight: 700;
}
.actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 8px }

.btn {
  appearance: none;
  display: inline-flex; align-items: center; justify-content: center;
  text-decoration: none; text-align: center;
  border: 1px solid var(--line);
  background: var(--paper); color: var(--ink);
  padding: 12px 18px; border-radius: 12px;
  font: inherit; font-weight: 700; cursor: pointer;
  min-height: 46px; touch-action: manipulation;
}
.btn.primary { background: var(--teal); border-color: var(--teal); color: #fff }
.btn.primary:hover { background: var(--teal-dark); border-color: var(--teal-dark); color: #fff }
.btn:disabled { opacity: .5; cursor: not-allowed }

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 20px 18px;
  box-shadow: var(--shadow);
}
.grid-2, .grid-3, .grid-4 { display: grid; gap: 14px }
@media (min-width: 700px) {
  .grid-2 { grid-template-columns: 1fr 1fr }
  .grid-3 { grid-template-columns: 1fr 1fr 1fr }
  .grid-4 { grid-template-columns: 1fr 1fr }
}

.svc h3 { color: var(--teal-dark) }
.svc .n {
  display: inline-grid; place-items: center;
  width: 32px; height: 32px; border-radius: 10px;
  background: var(--teal); color: #fff;
  font-weight: 800; font-size: 14px; margin-bottom: 10px;
}

.pkg { display: flex; flex-direction: column; gap: 8px; height: 100% }
.pkg .price {
  font-family: var(--display);
  font-size: 26px; font-weight: 650; color: var(--teal-dark);
  letter-spacing: -.03em; margin: 6px 0 2px;
}
.pkg .subprice { color: var(--muted); font-size: 14.5px; margin: 0 0 8px }
.badge {
  align-self: flex-start;
  font-size: 11px; font-weight: 800; letter-spacing: .08em;
  text-transform: uppercase;
  background: var(--warn-bg); color: var(--warn-ink);
  border-radius: 999px; padding: 4px 9px;
}
.pkg ul { margin: 8px 0 0; padding-left: 1.15em }
.pkg li { margin: 4px 0; font-size: 14.5px }

.note {
  background: var(--warn-bg); color: var(--warn-ink);
  border-radius: 14px; padding: 14px 16px;
  font-size: 14.5px; margin: 16px 0 0;
}
.note a { color: var(--teal-dark) }
.src {
  margin-top: 14px; font-size: 12.5px; color: var(--muted);
}
.src a { color: var(--muted) }
.figure {
  font-family: var(--display);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 650; color: var(--teal-dark);
  letter-spacing: -.04em; margin: 0 0 4px;
}
.figure span { display: block; font-family: var(--sans); font-size: 14px; font-weight: 600; color: var(--muted); letter-spacing: 0; margin-top: 4px }
.compare { display: grid; gap: 12px; margin: 16px 0 }
@media (min-width: 720px) { .compare { grid-template-columns: 1fr 1fr } }

.steps { counter-reset: step; list-style: none; margin: 0; padding: 0; display: grid; gap: 12px }
@media (min-width: 800px) { .steps { grid-template-columns: 1fr 1fr 1fr } }
.steps li {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px 16px 16px 18px;
  box-shadow: var(--shadow);
  position: relative;
}
.steps li::before {
  counter-increment: step;
  content: counter(step);
  display: inline-grid; place-items: center;
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--teal); color: #fff;
  font-weight: 800; font-size: 13px;
  margin-bottom: 8px;
}
.steps strong { display: block; margin-bottom: 4px }

.faq details {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 4px 16px;
  margin: 8px 0;
  box-shadow: var(--shadow);
}
.faq summary {
  cursor: pointer;
  font-weight: 700;
  padding: 14px 0;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none }
.faq summary::after {
  content: "+";
  float: right; color: var(--teal); font-weight: 700;
}
.faq details[open] summary::after { content: "–" }
.faq details p { margin: 0 0 14px; color: var(--ink) }

.form {
  display: grid; gap: 10px; margin-top: 12px;
}
label { font-size: 14px; font-weight: 650 }
input, textarea, select {
  width: 100%; font: inherit; font-size: 16px;
  padding: 12px 12px; border: 1px solid var(--line);
  border-radius: 12px; background: #fff; color: var(--ink);
}
textarea { min-height: 120px; resize: vertical }
input:focus, textarea:focus { outline: 2px solid var(--teal); outline-offset: 1px }
.form-msg { font-size: 14.5px; color: var(--warn-ink); background: var(--warn-bg); padding: 12px 14px; border-radius: 12px }

.disc {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 4px solid var(--gold);
  border-radius: 12px;
  padding: 16px 18px;
  font-size: 14.5px;
}
.disc ul { margin: 8px 0 0; padding-left: 1.15em }
.disc li { margin: 6px 0 }

.site-foot {
  max-width: 1080px;
  margin: 8px auto 0;
  padding: 22px 18px calc(24px + env(safe-area-inset-bottom));
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  border-top: 1px solid var(--line);
}
.site-foot .brand-f {
  display: block;
  font-weight: 750;
  color: var(--ink);
  letter-spacing: -.02em;
  margin-bottom: 4px;
  font-size: 14px;
}
.site-foot .copy { display: block; margin-top: 8px; font-size: 12.5px }

.about-card { max-width: 46em }

@media (max-width: 420px) {
  .brand { font-size: 14.5px; gap: 8px }
  .logo { width: 30px; height: 30px }
  .lang button { padding: 6px 8px; font-size: 12px }
  .hero { padding: 28px 18px 22px }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto }
}