@media (max-width: 768px) { #content { padding: var(--s-4); } }


.mod-header {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: var(--s-8);
  padding-bottom: var(--s-5);
  border-bottom: 1px solid var(--g1);
}
.mod-header h2, .mod-header .mod-title {
  font-family: var(--serif);
  font-size: var(--fs-h1);
  font-weight: 300;
  color: var(--g1);
  margin: 0;
  letter-spacing: -0.03em;
  font-style: italic;
}
.mod-header .mod-title::before {
  content: '—— ';
  color: var(--g5);
  font-style: normal;
  font-size: 0.6em;
  font-family: var(--mono);
  letter-spacing: 0.2em;
  vertical-align: middle;
  margin-right: var(--s-2);
}
.mod-header .mod-sub, .mod-header .mod-desc {
  font-family: var(--mono);
  font-size: var(--fs-mono);
  color: var(--g5);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 500;
}

.mod-sub .model-id { text-transform: none; letter-spacing: 0.05em; }
.mod-tools, .mod-header > div:last-child {
  display: flex; gap: var(--s-3); align-items: center;
}


.card {
  background: var(--g12);
  border: 1px solid var(--g9);
  border-radius: 0;
  padding: var(--s-6);
  margin-bottom: var(--s-5);
  box-shadow: none;
}
.card h3, .card .card-title {
  font-family: var(--serif);
  font-size: var(--fs-h3);
  font-weight: 400;
  color: var(--g1);
  margin: 0 0 var(--s-4);
  letter-spacing: -0.01em;
  font-style: italic;
}
.card.glass { background: var(--g12); border: 1px solid var(--g9); box-shadow: none; backdrop-filter: none; }


.tbl { width: 100%; border-collapse: collapse; }
.tbl th, .tbl td {
  padding: var(--s-4) var(--s-4);
  text-align: left;
  border-bottom: 1px solid var(--g9);
  font-size: var(--fs-body);
  vertical-align: middle;
}
.tbl th {
  font-family: var(--mono);
  font-size: var(--fs-mono);
  color: var(--g4);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  background: transparent;
  border-bottom: 1px solid var(--g1);
  padding-top: var(--s-3);
  padding-bottom: var(--s-3);
}
.tbl tbody tr:hover { background: var(--g11); }
.tbl tbody tr { transition: background 0.2s; }


.form-row { margin-bottom: var(--s-5); }
.form-row label {
  display: block;
  font-family: var(--mono);
  font-size: var(--fs-mono);
  color: var(--g3);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: var(--s-2);
}
.form-row input,
.form-row select,
.form-row textarea,
input.txt, select.txt, textarea.txt {
  width: 100%;
  padding: var(--s-2) 0;
  border: none;
  border-bottom: 1px solid var(--g8);
  border-radius: 0;
  font-size: var(--fs-body);
  background: transparent;
  font-family: var(--sans);
  color: var(--g1);
  transition: border-color 0.2s;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus,
input.txt:focus, select.txt:focus, textarea.txt:focus {
  outline: none;
  border-bottom-color: var(--g1);
  border-bottom-width: 2px;
  padding-bottom: calc(var(--s-2) - 1px);
}
.form-row input::placeholder { color: var(--g6); }
.form-row textarea { padding: var(--s-3); border: 1px solid var(--g9); }




.modal-mask {
  position: fixed; inset: 0;
  background: rgba(15, 15, 15, 0.4);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
}
.modal-mask .modal {
  background: var(--g12);
  border: 1px solid var(--g1);
  border-radius: 0;
  padding: var(--s-7);
  max-width: 560px;
  width: 90vw;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.15);
}.modal-header {
  font-family: var(--serif);
  font-size: var(--fs-h2);
  font-weight: 300;
  font-style: italic;
  color: var(--g1);
  margin: 0 0 var(--s-5);
  letter-spacing: -0.02em;
}
.modal-body { padding: 0; }
.modal-footer {
  display: flex; gap: var(--s-3);
  justify-content: flex-end;
  margin-top: var(--s-6);
  padding-top: var(--s-5);
  border-top: 1px solid var(--g9);
}


.class-card {
  display: flex; align-items: center; gap: var(--s-5);
  padding: var(--s-5) 0;
  border-bottom: 1px solid var(--g9);
  transition: all 0.2s;
}
.class-card:hover { padding-left: var(--s-3); }
.class-card .avatar {
  width: 56px; height: 56px;
  background: var(--g1);
  color: var(--g12);
  border-radius: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 300;
  font-style: italic;
  flex-shrink: 0;
}
.class-card .info { flex: 1; min-width: 0; }
.class-card .name {
  font-family: var(--serif);
  font-size: var(--fs-lead);
  font-weight: 400;
  color: var(--g1);
  font-style: italic;
}
.class-card .meta {
  font-family: var(--mono);
  font-size: var(--fs-mono);
  color: var(--g5);
  margin-top: var(--s-1);
  letter-spacing: 0.1em;
}
.class-card .actions { display: flex; gap: var(--s-2); flex-shrink: 0; }


.stat-card {
  background: var(--g12);
  border: 1px solid var(--g9);
  border-radius: 0;
  padding: var(--s-5);
  cursor: default;
  transition: all 0.2s;
  position: relative;
}
.stat-card .sc-label {
  font-family: var(--mono);
  font-size: var(--fs-mono);
  color: var(--g5);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 500;
}
.stat-card .sc-value {
  font-family: var(--serif);
  font-size: var(--fs-h1);
  font-weight: 300;
  color: var(--g1);
  margin-top: var(--s-3);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  line-height: 1;
  font-style: italic;
}
.stat-card .sc-foot {
  font-family: var(--mono);
  font-size: var(--fs-mono);
  color: var(--g4);
  margin-top: var(--s-3);
  letter-spacing: 0.1em;
}



input, select, textarea {
  font-family: var(--sans);
  color: var(--g1);
}


a { color: var(--g1); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--g3); }


hr { border: none; border-top: 1px solid var(--g9); margin: var(--s-5) 0; }


.section-eyebrow {
  font-family: var(--mono);
  font-size: var(--fs-mono);
  color: var(--g5);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: var(--s-3);
}

.section-eyebrow::before { content: '—— '; color: var(--g7); }




.chat-welcome {
  text-align: center;
  padding: 40px 24px 24px;
  color: var(--g3);
}
.chat-avatar-lg {
  font-size: 56px;
  margin-bottom: 16px;
  animation: chat-breathe 3s ease-in-out infinite;
}
@keyframes chat-breathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}
.chat-greet-cn {
  font-family: var(--serif);
  font-size: 22px;
  color: var(--g1);
  margin-bottom: 8px;
  font-weight: 300;
  letter-spacing: 0.5px;
}
.chat-greet-en {
  font-size: 12px;
  color: var(--g5);
  font-family: var(--serif);
  font-style: italic;
  margin-bottom: 24px;
  letter-spacing: 0.3px;
}
.chat-greet-hint {
  font-size: 12px;
  color: var(--g5);
  padding-top: 16px;
  border-top: 1px solid var(--g9);
  display: inline-block;
  padding: 12px 16px;
}
@keyframes chat-msg-in {
  0%   { opacity: 0; transform: translateY(6px); }
  100% { opacity: 1; transform: translateY(0); }
}
.chat-msg-typing {
  animation: chat-msg-in 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  display: block;
  margin-bottom: 10px;
  overflow: hidden;
  line-height: 1.3;
}
.chat-msg-typing .chat-msg-content {
  background: var(--g11);
  border: 1px solid var(--g9);
  color: var(--g5);
  font-style: italic;
  display: inline-block;
  padding: 4px 9px;
  border-radius: 7px;
  font-size: 13px;
  line-height: 1.4;
}
.typing-dots { display: inline-flex; gap: 3px; margin-right: 6px; vertical-align: middle; }
.typing-dots span {
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--g5);
  border-radius: 50%;
  animation: typing-bounce 1.2s ease-in-out infinite;
}
.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-4px); opacity: 1; }
}


.chat-caret {
  display: inline-block;
  width: 2px;
  height: 1em;
  margin-left: 2px;
  vertical-align: -0.15em;
  background: var(--g5);
  animation: chat-caret-blink 1s steps(2, start) infinite;
}
@keyframes chat-caret-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.chat-stream-text { white-space: pre-wrap; }


@media print {
  body * { visibility: hidden; }
  .sch-card-wrap, .sch-card-wrap * { visibility: visible; }
  .sch-card-wrap {
    position: absolute;
    left: 0; top: 0; right: 0;
    width: 100%;
    border: none !important;
    box-shadow: none !important;
  }
  .sch-card-wrap { background: #fff; }
  .no-print { display: none !important; }
  .sch-legend { display: none !important; }
  .sch-grid { font-size: 11px; }
  .sch-cell { height: 60px; }
  .sch-card { cursor: default; }
  .sch-card:hover { transform: none; box-shadow: none; }
}