* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 20% 0%, rgba(67, 148, 255, .35), transparent 34%),
    linear-gradient(135deg, #07111f 0%, #0d1424 48%, #111827 100%);
  color: #eef6ff;
}
.app-shell, .container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 40px;
}
.brand-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}
.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #eef6ff;
  text-decoration: none;
}
.brand-logo {
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  border-radius: 12px;
  box-shadow: 0 12px 28px rgba(37, 137, 255, .22);
}
.brand-lockup strong,
.brand-lockup small {
  display: block;
  line-height: 1.1;
}
.brand-lockup strong {
  font-size: 18px;
  letter-spacing: 0;
}
.brand-lockup small,
.brand-domain {
  color: #9fb5d7;
  font-size: 13px;
}
.brand-domain {
  padding: 7px 10px;
  border: 1px solid rgba(148, 190, 255, .18);
  border-radius: 999px;
  background: rgba(255,255,255,.06);
}
.workspace {
  display: grid;
  grid-template-columns: .82fr 1.18fr;
  gap: 24px;
  align-items: stretch;
  min-height: 520px;
}
.hidden { display: none !important; }
.assistant-hero {
  max-width: 780px;
  margin: 28px auto 18px;
  text-align: center;
}
.assistant-hero .badge {
  margin: 0 auto;
}
.assistant-hero h1 {
  margin: 18px 0 12px;
}
.composer-panel {
  max-width: 860px;
  margin: 0 auto;
  padding: 20px;
  border: 1px solid rgba(148, 190, 255, .2);
  border-radius: 8px;
  background: rgba(9, 20, 38, .76);
  box-shadow: 0 24px 70px rgba(0,0,0,.26);
  backdrop-filter: blur(16px);
}
.composer-panel textarea {
  min-height: 170px;
}
.composer-foot {
  display: grid;
  grid-template-columns: 1fr 132px;
  gap: 14px;
  align-items: center;
  margin-top: 14px;
}
.composer-foot button {
  margin: 0;
}
.usage-block strong,
.usage-block span {
  display: block;
}
.usage-block span {
  margin-top: 4px;
  color: #9fb5d7;
  font-size: 14px;
}
.assistant-meta {
  max-width: 860px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 14px auto 0;
}
.assistant-meta span {
  padding: 7px 10px;
  border: 1px solid rgba(148, 190, 255, .18);
  border-radius: 999px;
  background: rgba(255,255,255,.06);
  color: #b8c9e8;
  font-size: 13px;
}
.assistant-results {
  grid-template-columns: 1.2fr 1fr;
  max-width: 1080px;
  margin-left: auto;
  margin-right: auto;
}
.answer-card {
  grid-column: 1 / -1;
}
.image-preview {
  width: 100%;
  display: block;
  margin-bottom: 12px;
  border-radius: 8px;
  border: 1px solid rgba(148, 190, 255, .2);
}
.intro, .tool-panel, .result-card, .pay-panel, .card {
  border: 1px solid rgba(148, 190, 255, .2);
  background: rgba(9, 20, 38, .72);
  border-radius: 8px;
  box-shadow: 0 24px 70px rgba(0,0,0,.26);
  backdrop-filter: blur(16px);
}
.intro {
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.badge {
  width: fit-content;
  padding: 7px 12px;
  border: 1px solid rgba(88, 166, 255, .58);
  border-radius: 999px;
  color: #9ed0ff;
  background: rgba(88,166,255,.12);
  font-size: 13px;
}
h1 {
  margin: 18px 0 12px;
  font-size: 42px;
  line-height: 1.12;
  letter-spacing: 0;
}
h2 { margin: 0; font-size: 20px; }
p { margin: 0; color: #b7c8e6; line-height: 1.7; }
.tool-panel, .card { padding: 22px; }
label {
  display: block;
  margin: 14px 0 8px;
  font-weight: 700;
  color: #dbeaff;
}
textarea, input, select {
  width: 100%;
  border: 1px solid rgba(164, 198, 255, .22);
  border-radius: 8px;
  padding: 13px 14px;
  background: rgba(3, 9, 19, .58);
  color: #fff;
  outline: none;
  font-size: 16px;
}
textarea { min-height: 112px; resize: vertical; }
.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.compact-pair {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}
button {
  width: 100%;
  border: 0;
  border-radius: 8px;
  padding: 15px 18px;
  margin-top: 16px;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  background: linear-gradient(135deg,#2589ff,#69d2ff);
  color: #03111f;
}
button:disabled { opacity: .6; cursor: not-allowed; }
.secondary {
  width: auto;
  margin: 0;
  padding: 10px 13px;
  color: #eaf4ff;
  background: rgba(255,255,255,.13);
}
.vip-strip {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 14px;
  align-items: center;
  margin-top: 16px;
  padding: 14px;
  border-radius: 8px;
  background: rgba(37,137,255,.12);
}
.vip-strip span {
  display: block;
  margin-top: 4px;
  color: #9fb5d7;
  font-size: 14px;
}
.vip-action {
  display: grid;
  grid-template-columns: 1fr 72px;
  gap: 8px;
}
.result-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  gap: 18px;
  margin-top: 18px;
}
.result-card, .pay-panel { padding: 20px; }
.output-head {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
  margin-bottom: 14px;
}
.result-list {
  margin: 0;
  padding-left: 22px;
  color: #f7fbff;
  line-height: 1.72;
}
pre {
  margin: 0;
  white-space: pre-wrap;
  line-height: 1.75;
  color: #f7fbff;
  font-family: inherit;
}
.pay-panel {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 20px;
  align-items: center;
  margin-top: 18px;
}
.qr-row { display: flex; gap: 12px; flex-wrap: wrap; }
.qr {
  width: 118px;
  height: 118px;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  border-radius: 8px;
  background: rgba(255,255,255,.12);
  color: #dce7ff;
  border: 1px dashed rgba(255,255,255,.35);
}
.hint { font-size: 14px; color: #91a4c9; }
@media (max-width: 900px) {
  .workspace,
  .result-layout,
  .pay-panel,
  .vip-strip {
    grid-template-columns: 1fr;
  }
  .intro { padding: 26px; }
  h1 { font-size: 32px; }
}
@media (max-width: 640px) {
  .grid,
  .vip-action { grid-template-columns: 1fr; }
  .compact-pair {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 10px;
  }
  .secondary { width: 100%; }
}

@media (max-width: 760px) {
  .app-shell, .container {
    width: min(100% - 20px, 520px);
    padding: 14px 0 28px;
  }
  .brand-bar {
    align-items: flex-start;
    margin-bottom: 12px;
  }
  .brand-logo {
    width: 40px;
    height: 40px;
    flex-basis: 40px;
  }
  .brand-domain {
    display: none;
  }
  .workspace {
    gap: 12px;
    min-height: 0;
  }
  .assistant-hero {
    margin: 18px auto 12px;
    text-align: left;
  }
  .assistant-hero .badge {
    margin: 0;
  }
  .composer-panel {
    padding: 14px;
  }
  .composer-panel textarea {
    min-height: 150px;
  }
  .composer-foot {
    grid-template-columns: 1fr;
  }
  .assistant-meta {
    margin-top: 10px;
  }
  .intro, .tool-panel, .result-card, .pay-panel, .card {
    box-shadow: 0 14px 36px rgba(0,0,0,.24);
  }
  .intro {
    padding: 18px;
  }
  h1 {
    margin: 12px 0 8px;
    font-size: 28px;
  }
  h2 {
    font-size: 18px;
  }
  p {
    font-size: 14px;
  }
  .tool-panel, .card, .result-card, .pay-panel {
    padding: 16px;
  }
  textarea {
    min-height: 96px;
  }
  button {
    min-height: 46px;
    padding: 13px 14px;
  }
  .output-head {
    align-items: stretch;
    flex-direction: column;
    gap: 10px;
  }
  .vip-strip {
    padding: 12px;
  }
  .pay-panel {
    gap: 14px;
  }
  .qr-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .qr {
    width: 100%;
    height: auto;
    aspect-ratio: 1;
  }
  .result-list, pre {
    font-size: 15px;
  }
}

@media (min-width: 761px) and (max-width: 1023px) {
  .app-shell, .container {
    width: min(100% - 40px, 860px);
  }
  .workspace {
    grid-template-columns: 1fr;
    min-height: 0;
  }
  .result-layout {
    grid-template-columns: 1fr 1fr;
  }
  .script-card {
    grid-column: 1 / -1;
  }
  .pay-panel {
    grid-template-columns: 1fr auto;
  }
  .pay-panel > .secondary {
    grid-column: 1 / -1;
    width: 100%;
  }
}