:root {
  --accent: #0029d5;
  --highlight: #bf005c;
  --surface: #f4f5fa;
  --border: #dedfe6;
  --text: #161b25;
  --muted: #626876;
  --control-height: 52px;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 16px;
  color: var(--text);
  background: #fff;
  letter-spacing: 0;
  line-height: 1.6;
  color-scheme: light;
}
* { box-sizing: border-box; }
body { margin: 0; }
button, input, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button, select, a { cursor: pointer; }
button { background: transparent; }
button:disabled { cursor: not-allowed; opacity: .5; }
button, a, input, select { transition: border-color 160ms, background-color 160ms, color 160ms; }
:focus-visible { outline: 3px solid #96b5ff; outline-offset: 3px; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3, label, .target-card-title { overflow-wrap: anywhere; }
button, a { overflow-wrap: anywhere; }
.container { width: min(1296px, calc(100% - 80px)); margin: auto; }
.page-header { padding: 40px 0 34px; text-align: center; }
.page-header h1 { font-size: 38px; font-weight: 500; line-height: 1.3; }
.page-header p { margin-top: 12px; color: var(--muted); font-size: 16px; }
.fieldset { margin-bottom: 34px; padding: 28px; border: 1px solid var(--border); background: var(--surface); min-width: 0; }
.fieldset h2, .target-subsection h3 { font-size: 20px; font-weight: 500; color: var(--accent); line-height: 1.4; }
.instruction { color: var(--muted); font-size: 14px; margin-top: 10px; }
.form-group { display: flex; flex-direction: column; min-width: 0; margin-top: 20px; }
.form-group label { margin-bottom: 8px; font-size: 14px; }
.form-group small { margin-top: 6px; font-size: 13px; color: var(--muted); }
input:not([type="checkbox"]), select {
  min-width: 0; width: 100%; height: var(--control-height); padding: 10px 14px;
  border: 1px solid var(--border); border-radius: 2px; background-color: #fff;
  color: var(--text); font-size: 15px;
}
input::placeholder { color: #747985; opacity: 1; }
input:not([type="checkbox"]):hover, select:hover { border-color: #99a4be; }
input:not([type="checkbox"]):focus, select:focus { border-color: var(--accent); }
select { appearance: none; padding-right: 36px; background: #fff url("images/b2.svg") no-repeat right 14px center / 12px 7px; }
.g_sel { min-width: 0; width: 100%; }
.compounds-container { margin-top: 20px; }
.compound-input { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr) 52px; gap: 12px; margin-bottom: 16px; align-items: start; }
.btn-remove, .btn-remove-inline, .icon-button {
  display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0;
  width: var(--control-height); height: var(--control-height); padding: 0;
  border: 1px solid var(--accent); border-radius: 3px; color: var(--accent); font-size: 22px;
}
.btn-remove:hover, .btn-remove-inline:hover { background: var(--accent); color: #fff; }
.btn-add, .btn-primary, .btn-secondary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; max-width: 100%; padding: 9px 22px; font-size: 14px;
  border: 1px solid var(--accent); border-radius: 24px; color: var(--accent);
  text-decoration: none; background: transparent; line-height: 1.5;
}
.btn-add { margin-top: 8px; }
.btn-add:hover { background: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { color: #fff; background: var(--highlight); border-color: var(--highlight); }
.btn-primary:hover img { filter: brightness(0) invert(1); }
.btn-secondary { color: var(--muted); border-color: var(--border); }
.btn-secondary:hover { background: #e9ebf2; color: var(--text); }
.composition-container { margin-top: 20px; }
.composition-item { display: flex; align-items: center; gap: 16px; justify-content: space-between; padding: 10px 12px 10px 16px; background: #fff; border: 1px solid var(--border); margin-bottom: 12px; }
.composition-label { min-width: 0; overflow-wrap: anywhere; }
.composition-item .composition-input { flex: 0 0 140px; width: 140px; }
.composition-status { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; border-top: 1px solid var(--border); padding-top: 16px; font-size: 14px; }
.status-value { color: var(--accent); margin-left: 8px; }
.composition-message { display: flex; align-items: center; gap: 6px; }
#compositionWarning2 { display: flex; flex-shrink: 0; }
.warning-text { color: var(--highlight); }
.target-products-container { margin: 22px 0 10px; display: grid; gap: 20px; }
.target-product-card { padding: 0 22px 24px; background: #fff; min-width: 0; border-radius: 3px; }
.target-card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 0; min-height: 61px; border-bottom: 1px solid var(--border); }
.target-card-title { font-size: 18px; }
.target-remove-btn { --control-height: 44px; }
.form-row { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; }
.target-subsection { padding-top: 26px; margin-top: 26px; border-top: 1px solid var(--border); }
.specific-impurities-container { margin-top: 20px; display: grid; gap: 12px; }
.constraint-row { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr) minmax(130px,.7fr) 52px; gap: 12px; padding: 16px; align-items: end; background: #fff; border: 1px solid var(--border); border-radius: 3px; }
.constraint-row .form-group { margin: 0; }
.input-with-unit { display: grid; grid-template-columns: minmax(0,1fr) 240px; gap: 12px; }
.button-group { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.quota-note { margin-top: 18px; text-align: center; color: var(--muted); font-size: 14px; }
footer { margin: 50px 0 28px; padding-top: 24px; border-top: 1px solid var(--border); text-align: center; font-size: 13px; color: var(--muted); }
.result-section, .loading-section, .error-section { margin-top: 32px; padding-top: 24px; border-top: 2px solid var(--accent); }
.result-header, .error-header { display: flex; gap: 12px; align-items: center; margin-bottom: 16px; }
.result-header h2, .error-header h2 { flex: 1; min-width: 0; font-size: 22px; font-weight: 500; color: var(--accent); }
.icon-button { --control-height: 44px; border-color: var(--border); }
.icon-button:hover { background: var(--surface); }
.report-frame { display: block; width: 100%; height: 800px; height: min(900px, 80vh); border: 1px solid var(--border); background: var(--surface); }
.analysis-result { white-space: pre-wrap; overflow-wrap: anywhere; line-height: 1.8; }
.loading-section { text-align: center; padding: 28px 0; }
.loading-section h2 { font-size: 20px; font-weight: 500; }
.loading-detail { color: var(--muted); margin-top: 10px; }
.spinner { width: 32px; height: 32px; border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 1s linear infinite; margin: 0 auto 18px; }
@keyframes spin { to { transform: rotate(360deg); } }
.error-section { border-color: var(--highlight); color: var(--highlight); }
.error-header h2 { color: var(--highlight); }
#errorMessage { white-space: pre-wrap; overflow-wrap: anywhere; }
.disclaimer-dialog { width: min(780px,calc(100% - 32px)); max-height: 90vh; max-height: 90dvh; padding: 0; border: 1px solid var(--border); border-radius: 8px; color: var(--text); }
.disclaimer-dialog[open] { display: flex; flex-direction: column; }
.disclaimer-dialog::backdrop { background: rgba(17,23,35,.48); }
.disclaimer-modal-header { display: flex; align-items: flex-start; gap: 20px; justify-content: space-between; padding: 24px; border-bottom: 1px solid var(--border); flex-shrink: 0; }
.disclaimer-eyebrow { color: var(--muted); font-size: 13px; margin-bottom: 4px; }
.disclaimer-modal-header h2 { font-size: 22px; font-weight: 500; color: var(--accent); }
.disclaimer-modal-body { padding: 24px; overflow-y: auto; min-height: 0; font-size: 14px; }
.disclaimer-modal-body p + p { margin-top: 16px; }
.disclaimer-modal-footer { border-top: 1px solid var(--border); padding: 20px 24px; flex-shrink: 0; background: var(--surface); }
.disclaimer-consent { display: flex; align-items: flex-start; gap: 12px; cursor: pointer; font-size: 14px; }
.disclaimer-consent input { width: 20px; height: 20px; flex-shrink: 0; accent-color: var(--accent); margin: 2px 0 0; }
.disclaimer-actions { margin-top: 18px; display: flex; gap: 12px; justify-content: flex-end; }
@media (max-width: 900px) {
  .container { width: calc(100% - 40px); }
  .fieldset { padding: 22px; }
  .constraint-row { grid-template-columns: minmax(0,1fr) 52px; }
  .constraint-row .form-group { grid-column: 1 / -1; }
  .constraint-row .form-group:nth-child(3) { grid-column: 1; }
  .constraint-row .specific-remove-btn { grid-column: 2; }
}
@media (max-width: 600px) {
  :root { --control-height: 46px; }
  .container { width: calc(100% - 32px); }
  .page-header { padding: 32px 0 28px; }
  .page-header h1 { font-size: 28px; }
  .page-header p { font-size: 14px; }
  .fieldset { padding: 18px 16px; margin-bottom: 24px; }
  .fieldset h2, .target-subsection h3 { font-size: 18px; }
  input:not([type="checkbox"]), select { font-size: 16px; }
  .compound-input { grid-template-columns: minmax(0,1fr) 46px; gap: 10px; }
  .compound-name { grid-column: 1; grid-row: 1; }
  .compound-cas { grid-column: 1; grid-row: 2; }
  .compound-input .btn-remove { grid-column: 2; grid-row: 1; }
  .composition-item { padding: 10px; gap: 10px; }
  .composition-item .composition-input { width: 88px; flex-basis: 88px; }
  .composition-status { font-size: 13px; }
  .target-product-card { padding: 0 14px 20px; }
  .form-row { grid-template-columns: minmax(0,1fr); gap: 0; }
  .input-with-unit { grid-template-columns: minmax(0,1fr); gap: 10px; }
  .constraint-row { padding: 12px; grid-template-columns: minmax(0,1fr) 46px; }
  .button-group { flex-direction: column; }
  .button-group button { width: 100%; }
  .result-header { flex-wrap: wrap; }
  .result-header h2 { flex-basis: calc(100% - 60px); font-size: 20px; }
  .result-header .icon-button { order: 1; }
  .result-header .btn-download { order: 2; width: 100%; }
  .disclaimer-modal-header, .disclaimer-modal-body { padding: 16px; }
  .disclaimer-modal-header h2 { font-size: 18px; }
  .disclaimer-modal-footer { padding: 16px; }
  .disclaimer-actions { flex-wrap: wrap; }
  .disclaimer-actions button { flex: 1 1 120px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}