:root {
  --ink: #1c2521;
  --muted: #65736c;
  --line: #d8e0d9;
  --paper: #f7f4ec;
  --panel: #ffffff;
  --moss: #697f54;
  --leaf: #cfe85c;
  --clay: #c96e4f;
  --sky: #dbe8f3;
  --charcoal: #17201c;
  --shadow: 0 18px 50px rgba(30, 44, 38, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(219, 232, 243, 0.52), rgba(247, 244, 236, 0) 420px),
    var(--paper);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.55;
}

button,
input,
select,
textarea {
  font: inherit;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(18px, 4vw, 56px);
  background: rgba(247, 244, 236, 0.88);
  border-bottom: 1px solid rgba(216, 224, 217, 0.78);
  backdrop-filter: blur(16px);
}

.app-header h1 {
  margin: 2px 0 0;
  font-size: 1.45rem;
  line-height: 1.15;
}

.eyebrow,
.label {
  margin: 0;
  color: var(--clay);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.top-nav a {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  padding: 0 12px;
  color: var(--ink);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 999px;
}

.top-nav a:hover,
.top-nav a:focus-visible {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.7);
  outline: none;
}

main {
  padding: 28px clamp(18px, 4vw, 56px) 56px;
}

.workbench {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(320px, 0.75fr);
  gap: 20px;
  align-items: stretch;
}

.brief-panel,
.director-panel,
.script-panel,
.review-panel {
  background: var(--panel);
  border: 1px solid rgba(216, 224, 217, 0.9);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.brief-panel {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(320px, 1fr);
  min-height: 520px;
  overflow: hidden;
}

.product-media {
  display: grid;
  min-height: 420px;
  place-items: center;
  background: linear-gradient(140deg, #edf6ef, #fbf5e6 58%, #eaf1f9);
  border-right: 1px solid var(--line);
}

.product-media img {
  display: block;
  width: min(92%, 520px);
  height: auto;
}

.brief-copy,
.director-panel,
.section-band,
.script-panel,
.review-panel {
  padding: clamp(20px, 3vw, 34px);
}

.brief-copy h2,
.panel-heading h2,
.section-title h2 {
  margin: 6px 0 0;
  font-size: clamp(1.35rem, 2.4vw, 2.2rem);
  line-height: 1.12;
  letter-spacing: 0;
}

.lead {
  margin: 22px 0;
  color: #33413a;
  font-size: 1.04rem;
}

.facts-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.facts-grid div {
  min-height: 108px;
  padding: 16px;
  background: #f5f7f2;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.facts-grid span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  margin-bottom: 8px;
}

.facts-grid strong {
  display: block;
  font-size: 0.98rem;
  line-height: 1.35;
}

.director-panel {
  display: flex;
  flex-direction: column;
}

.guide-list {
  display: grid;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: guide;
}

.guide-list li {
  counter-increment: guide;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.guide-list li::before {
  content: counter(guide, decimal-leading-zero);
  color: var(--clay);
  font-size: 0.8rem;
  font-weight: 800;
}

.guide-list strong {
  display: block;
  margin-bottom: 3px;
}

.guide-list span {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(360px, 1fr) minmax(320px, 0.82fr);
  gap: 20px;
  margin-top: 20px;
  align-items: start;
}

.section-band {
  background: transparent;
  border: 1px solid rgba(216, 224, 217, 0.9);
  border-radius: 8px;
}

.brief-blocks {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

.brief-blocks section {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.brief-blocks h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
}

.brief-blocks p,
.brief-blocks ul {
  margin: 0;
  color: var(--muted);
}

.brief-blocks ul {
  padding-left: 18px;
}

.brief-blocks li + li {
  margin-top: 8px;
}

.script-form {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(150px, 0.44fr);
  gap: 14px;
}

label {
  display: grid;
  gap: 7px;
  color: #2d3933;
  font-size: 0.9rem;
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  color: var(--ink);
  background: #fbfcfa;
  border: 1px solid #cfd9d1;
  border-radius: 8px;
}

input,
select {
  min-height: 44px;
  padding: 0 12px;
}

textarea {
  min-height: 52px;
  padding: 12px;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--moss);
  box-shadow: 0 0 0 3px rgba(105, 127, 84, 0.18);
  outline: none;
}

.checks {
  display: grid;
  gap: 8px;
  padding: 14px;
  background: #f5f7f2;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.checks label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
}

.checks input {
  width: 18px;
  min-height: 18px;
  accent-color: var(--moss);
}

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

button {
  min-height: 44px;
  padding: 0 18px;
  color: #fff;
  background: var(--charcoal);
  border: 1px solid var(--charcoal);
  border-radius: 8px;
  font-weight: 800;
  cursor: pointer;
}

button:hover {
  transform: translateY(-1px);
}

button.secondary,
.submission-item button {
  color: var(--ink);
  background: #fff;
  border-color: var(--line);
}

.score-board {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.score-board label {
  grid-template-columns: minmax(130px, 1fr) minmax(110px, 0.8fr);
  align-items: center;
  gap: 12px;
}

input[type="range"] {
  padding: 0;
  accent-color: var(--clay);
}

.total-score {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin: 22px 0;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.total-score span {
  color: var(--muted);
  font-weight: 800;
}

.total-score strong {
  font-size: 3rem;
  line-height: 1;
}

.feedback-box {
  margin-bottom: 18px;
}

.submission-list {
  display: grid;
  gap: 10px;
}

.submission-item {
  display: grid;
  gap: 10px;
  padding: 14px;
  background: #f7f8f4;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.submission-item div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.submission-item span {
  color: var(--muted);
  font-size: 0.85rem;
}

.submission-item p {
  margin: 0;
  color: #35443c;
}

.empty-state {
  margin: 0;
  padding: 16px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.58);
  border: 1px dashed #cfd9d1;
  border-radius: 8px;
}

@media (max-width: 1180px) {
  .workbench,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .brief-panel {
    grid-template-columns: 1fr;
  }

  .product-media {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 720px) {
  .app-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .top-nav {
    width: 100%;
  }

  .top-nav a {
    flex: 1;
    justify-content: center;
  }

  main {
    padding-top: 18px;
  }

  .facts-grid,
  .form-row {
    grid-template-columns: 1fr;
  }

  .score-board label {
    grid-template-columns: 1fr;
  }
}