:root {
  --paper: #f5f1e8;
  --paper-2: #fbfaf6;
  --ink: #172329;
  --muted: #6d7c82;
  --line: #d6ddd9;
  --navy: #113843;
  --green: #07977f;
  --green-dark: #007d69;
  --mint: #e6f2ef;
  --orange: #f3683b;
  --white: #fff;
  --shadow: 0 14px 34px rgba(18, 48, 55, .10);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 5%, rgba(7, 151, 127, .08), transparent 24rem),
    var(--paper);
  font-family: Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

button, input, textarea { font: inherit; }
button { cursor: pointer; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 72px;
  padding: 12px 28px;
  color: var(--white);
  background: rgba(17, 56, 67, .97);
  border-bottom: 1px solid rgba(255, 255, 255, .12);
  backdrop-filter: blur(18px);
}

.brand, .toolbar { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--green);
  font-weight: 900;
}
.brand strong { font-size: 17px; }
.brand span { color: rgba(255, 255, 255, .66); font-size: 12px; }
.save-state { color: rgba(255, 255, 255, .66); font-size: 12px; }

.btn, .add-btn, .remove-btn {
  border: 1px solid rgba(255, 255, 255, .20);
  border-radius: 10px;
  padding: 9px 14px;
  color: var(--white);
  background: rgba(255, 255, 255, .08);
  transition: .18s ease;
}
.btn:hover, .add-btn:hover, .remove-btn:hover { transform: translateY(-1px); }
.btn.primary { border-color: var(--orange); background: var(--orange); }

.page { width: min(1240px, calc(100% - 40px)); margin: 30px auto 60px; }
.hero {
  position: relative;
  overflow: hidden;
  padding: 34px 42px;
  color: var(--white);
  background: linear-gradient(130deg, rgba(7, 151, 127, .40), transparent 56%), var(--navy);
  border-radius: 24px;
  box-shadow: var(--shadow);
}
.hero::after {
  content: "";
  position: absolute;
  width: 330px;
  height: 330px;
  right: -90px;
  top: -210px;
  border: 58px solid rgba(255, 255, 255, .055);
  border-radius: 50%;
}
.eyebrow { margin: 0 0 10px; color: #7ce0ce; font-size: 13px; font-weight: 800; letter-spacing: .12em; }
.hero h1 { margin: 0; font-size: clamp(28px, 4vw, 44px); }
.hero > p:last-child { margin: 12px 0 0; color: rgba(255, 255, 255, .74); }

.panel {
  margin-top: 22px;
  padding: 28px 30px;
  background: var(--paper-2);
  border: 1px solid rgba(17, 56, 67, .12);
  border-radius: 20px;
  box-shadow: var(--shadow);
}
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 22px; }
.section-heading span { color: var(--green-dark); font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.section-heading h2 { margin: 7px 0 0; font-size: 24px; }
.section-heading p { margin: 0; color: var(--muted); font-size: 12px; }

.project-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 16px; }
.scope-field { grid-column: 1 / -1; }
.field { display: grid; gap: 7px; }
.field > span { color: #405259; font-size: 12px; font-weight: 700; }
.field input, .field textarea, .cell-input, .cell-textarea {
  width: 100%;
  border: 1px solid #cad4d0;
  border-radius: 10px;
  padding: 10px 11px;
  color: var(--ink);
  background: var(--white);
  outline: none;
}
.field textarea, .cell-textarea { resize: vertical; }
.field input:focus, .field textarea:focus, .cell-input:focus, .cell-textarea:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(7, 151, 127, .11);
}

.add-btn { color: var(--green-dark); border-color: #acd6cd; background: var(--mint); font-weight: 700; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; }
table { width: 100%; min-width: 970px; border-collapse: collapse; table-layout: fixed; }
th {
  padding: 13px 12px;
  color: var(--white);
  background: var(--navy);
  font-size: 12px;
  text-align: left;
}
td { padding: 10px 10px; border-top: 1px solid var(--line); vertical-align: middle; }
tbody tr:nth-child(even) { background: #f1f5f2; }
tbody tr.excluded { opacity: .48; }
.include-col { width: 64px; text-align: center; }
.item-col { width: 160px; }
.days-col { width: 105px; }
.action-col { width: 72px; text-align: center; }
.include-check { width: 18px; height: 18px; accent-color: var(--green); }
.cell-input, .cell-textarea { padding: 8px 9px; border-radius: 8px; background: rgba(255, 255, 255, .82); }
.cell-textarea { min-height: 54px; }
.days-input { text-align: right; font-weight: 800; }
.remove-btn { padding: 7px 9px; color: #ad4c32; border-color: #e6c2b7; background: #fff4ef; font-size: 12px; }

.summary-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 18px;
  padding: 17px 20px;
  background: var(--mint);
  border-radius: 14px;
}
.summary-bar > div:first-child { display: grid; gap: 5px; }
.summary-bar span { color: #405259; }
.summary-bar small { color: var(--muted); }
.total-days { display: flex; align-items: baseline; gap: 16px; }
.total-days strong { color: var(--green-dark); font-size: 20px; }
.total-days em { font-size: 34px; font-style: normal; }

.review-panel .field { margin-bottom: 18px; }
.review-line { display: flex; align-items: center; gap: 16px; padding: 14px 16px; border-left: 4px solid var(--green); background: #eef3ef; }
.review-line span { color: var(--green-dark); font-size: 12px; font-weight: 800; }
.review-line strong { font-size: 14px; }

.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 20;
  max-width: 360px;
  padding: 12px 16px;
  color: var(--white);
  background: var(--navy);
  border-radius: 10px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: .2s ease;
}
.toast.show { opacity: 1; transform: translateY(0); }

@media (max-width: 760px) {
  .topbar { align-items: flex-start; padding: 12px 16px; }
  .toolbar { justify-content: flex-end; flex-wrap: wrap; gap: 6px; }
  .save-state { width: 100%; text-align: right; }
  .btn { padding: 8px 10px; }
  .page { width: min(100% - 24px, 1240px); margin-top: 16px; }
  .hero { padding: 26px 24px; }
  .panel { padding: 22px 18px; }
  .project-grid { grid-template-columns: 1fr; }
  .scope-field { grid-column: auto; }
  .section-heading, .summary-bar { align-items: flex-start; flex-direction: column; }
  .total-days { width: 100%; justify-content: space-between; }
  .review-line { align-items: flex-start; flex-direction: column; }
}