:root {
  --ink: #17201d;
  --muted: #68716e;
  --line: #dfe5e1;
  --paper: #ffffff;
  --canvas: #f1f4f1;
  --green: #195f48;
  --green-dark: #104534;
  --mint: #b7e1c9;
  --accent: #d6f05d;
  --danger: #ae3f32;
  font-family: Inter, "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  color: var(--ink);
  background: var(--canvas);
  font-synthesis: none;
}

* { box-sizing: border-box; }

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 10% 0%, rgba(183, 225, 201, .45), transparent 28rem),
    var(--canvas);
}

button, input, select { font: inherit; }

.page-shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 34px 0 24px; }

.topbar { display: flex; align-items: center; gap: 15px; margin-bottom: 26px; }
.brand-mark { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 13px; background: var(--green); color: white; font-size: 20px; font-weight: 800; box-shadow: 0 8px 20px rgba(25, 95, 72, .18); }
.eyebrow { margin: 0 0 3px; color: var(--green); font-size: 10px; font-weight: 800; letter-spacing: .16em; }
h1 { margin: 0; font-size: 23px; line-height: 1.15; letter-spacing: -.02em; }
.status { display: flex; align-items: center; gap: 7px; margin-left: auto; padding: 8px 11px; border: 1px solid #d9e2dc; border-radius: 999px; background: rgba(255,255,255,.72); color: #52605b; font-size: 12px; }
.status i { width: 7px; height: 7px; border-radius: 50%; background: #36a370; box-shadow: 0 0 0 3px rgba(54, 163, 112, .13); }

.workspace { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(340px, .9fr); overflow: hidden; border: 1px solid #e1e6e3; border-radius: 24px; background: var(--paper); box-shadow: 0 24px 70px rgba(26, 48, 39, .09); }
.form-panel, .result-panel { padding: 42px; }
.result-panel { display: flex; flex-direction: column; color: white; background: linear-gradient(155deg, var(--green) 0%, var(--green-dark) 100%); }

.section-heading { display: flex; gap: 13px; align-items: flex-start; margin-bottom: 34px; }
.section-heading > span { display: grid; place-items: center; width: 31px; height: 31px; flex: none; border-radius: 9px; background: #e6f2eb; color: var(--green); font-size: 11px; font-weight: 800; }
.section-heading h2 { margin: 0 0 5px; font-size: 19px; letter-spacing: -.01em; }
.section-heading p { margin: 0; color: var(--muted); font-size: 12px; }
.section-heading.light > span { background: rgba(255,255,255,.12); color: var(--accent); }
.section-heading.light p { color: rgba(255,255,255,.62); }

.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 20px; }
.field { display: flex; flex-direction: column; gap: 9px; }
.field > span { font-size: 13px; font-weight: 700; }
.field small { min-height: 15px; color: #87908d; font-size: 11px; }
input, select { width: 100%; height: 48px; border: 1px solid var(--line); border-radius: 10px; outline: none; background: #fbfcfb; color: var(--ink); padding: 0 14px; transition: border-color .15s, box-shadow .15s, background .15s; }
select { cursor: pointer; appearance: auto; }
input:focus, select:focus { border-color: #4b9a7c; background: white; box-shadow: 0 0 0 3px rgba(75, 154, 124, .12); }
.input-suffix { position: relative; }
.input-suffix input, .input-suffix select { padding-right: 68px; }
.input-suffix b { position: absolute; top: 50%; right: 13px; transform: translateY(-50%); color: #8a9390; font-size: 11px; font-weight: 600; pointer-events: none; }
.input-suffix select + b { right: 35px; }
.form-actions { display: flex; align-items: center; justify-content: space-between; min-height: 39px; margin-top: 30px; padding-top: 24px; border-top: 1px solid #edf0ee; }
#validationMessage { margin: 0; color: var(--danger); font-size: 12px; }
#resetButton { margin-left: auto; border: 1px solid #cfd8d3; border-radius: 9px; background: white; color: var(--green); padding: 9px 14px; font-size: 12px; font-weight: 700; cursor: pointer; }
#resetButton:hover { background: #f2f8f5; }

.quote-card { padding: 25px 0 28px; border-top: 1px solid rgba(255,255,255,.13); border-bottom: 1px solid rgba(255,255,255,.13); }
.quote-card > span { color: var(--mint); font-size: 12px; font-weight: 700; }
.quote-card strong { display: flex; align-items: baseline; gap: 9px; margin-top: 8px; font-size: clamp(42px, 5vw, 62px); line-height: 1; letter-spacing: -.045em; }
.quote-card strong small { color: var(--accent); font-size: 23px; }
.quote-card p { margin: 13px 0 0; color: rgba(255,255,255,.5); font-size: 11px; }
.result-details { margin: 12px 0 0; }
.result-details div { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; border-bottom: 1px solid rgba(255,255,255,.1); }
.result-details dt { color: rgba(255,255,255,.63); font-size: 12px; }
.result-details dd { margin: 0; font-size: 18px; font-weight: 750; }
.result-details dd span, .result-details dd em { color: var(--mint); font-size: 11px; font-style: normal; font-weight: 500; }
.formula { margin-top: auto; padding: 18px; border: 1px solid rgba(255,255,255,.1); border-radius: 13px; background: rgba(255,255,255,.06); }
.formula > span { display: block; margin-bottom: 10px; color: var(--accent); font-size: 10px; font-weight: 800; letter-spacing: .12em; }
.formula p { margin: 5px 0; color: rgba(255,255,255,.62); font-size: 11px; }
.share-button { display: flex; align-items: center; justify-content: center; gap: 10px; width: 100%; margin-top: 16px; border: 0; border-radius: 12px; background: var(--accent); color: #173b2d; padding: 13px 18px; font-size: 13px; font-weight: 800; cursor: pointer; transition: transform .15s, background .15s, box-shadow .15s; }
.share-button:hover { transform: translateY(-1px); background: #e0f66f; box-shadow: 0 8px 20px rgba(0,0,0,.14); }
.share-button:active { transform: translateY(0); }
.share-button:disabled { cursor: not-allowed; opacity: .55; transform: none; }
.wechat-mark { position: relative; display: grid; place-items: center; width: 23px; height: 18px; border-radius: 9px; background: var(--green); color: var(--accent); font-size: 10px; letter-spacing: 1px; line-height: 1; }
.wechat-mark::after { content: ""; position: absolute; left: 3px; bottom: -3px; border: 4px solid transparent; border-top-color: var(--green); transform: rotate(18deg); }
.share-status { min-height: 16px; margin: 8px 0 -8px; color: rgba(255,255,255,.7); font-size: 11px; text-align: center; }
footer { padding: 18px 2px 0; color: #858d89; font-size: 11px; text-align: center; }

@media (max-width: 820px) {
  .page-shell { width: min(100% - 24px, 620px); padding-top: 22px; }
  .workspace { grid-template-columns: 1fr; }
  .form-panel, .result-panel { padding: 30px; }
  .quote-card strong { font-size: 52px; }
  .formula { margin-top: 20px; }
}

@media (max-width: 500px) {
  .page-shell { width: calc(100% - 16px); }
  .topbar { padding: 0 5px; }
  .status { display: none; }
  .form-panel, .result-panel { padding: 25px 20px; }
  .form-grid { grid-template-columns: 1fr; gap: 18px; }
  .section-heading { margin-bottom: 26px; }
  .quote-card strong { font-size: 45px; }
}