.ai-assistant {
  position: fixed; inset: 0; z-index: 2500; overflow-y: auto;
  background: rgba(235,243,255,.84); opacity: 0; visibility: hidden;
  pointer-events: none; transition: opacity .22s ease, visibility .22s ease;
}
.ai-assistant.is-open { opacity: 1; visibility: visible; pointer-events: auto; }
.ai-assistant-open { overflow: hidden; }
.ai-assistant__toast {
  position: fixed;
  z-index: 3;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(20px, env(safe-area-inset-bottom));
  left: max(16px, env(safe-area-inset-left));
  width: min(420px, calc(100vw - 32px));
  margin: auto;
  padding: 13px 16px;
  border: 1px solid rgba(255,255,255,.5);
  border-radius: 16px;
  background: rgba(19,159,94,.97);
  color: #fff;
  box-shadow: 0 15px 30px rgba(17,116,72,.28);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.7;
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(15px);
  transition: opacity .2s ease, transform .2s ease;
}
.ai-assistant__toast.is-open { opacity: 1; transform: translateY(0); }
.ai-assistant__shell {
  min-height: 100%; max-width: 540px; margin: auto;
  background: linear-gradient(145deg,#fafdff 0%,#edf5ff 100%);
  box-shadow: 0 0 50px rgba(30,79,160,.13);
}
.ai-assistant__header {
  height: 76px; padding: 0 20px; display: flex; align-items: center;
  justify-content: space-between; background: rgba(255,255,255,.92);
  border-bottom: 1px solid #e4edff; position: sticky; top: 0; z-index: 2; direction: rtl;
}
.ai-assistant__back,.ai-assistant__bell {
  width: 42px; height: 42px; border: 0; background: transparent; color: #123266;
  display: grid; place-items: center; border-radius: 14px;
}
.ai-assistant__back { background: #f1f6ff; border: 1px solid #d8e6ff; color: #286cf4; }
.ai-assistant__brand { display: flex; align-items: center; gap: 8px; text-decoration: none; color: #112b5c; direction: ltr; }
.ai-assistant__brand img {
  width: 32px; height: 32px; object-fit: contain; border-radius: 11px; padding: 4px;
  background: #f2f6ff; box-shadow: 0 5px 12px rgba(40,92,177,.08);
}
.ai-assistant__brand b { font-size: 18px; }
.ai-assistant__brand b span { color: #2775ff; font-size: 22px; }
.ai-assistant__content { padding: 25px 20px 36px; }
.ai-assistant__hero { text-align: center; }
.ai-assistant__orb { height: 205px; display: grid; place-items: center; margin: -8px auto 3px; }
.ai-assistant__orb img {
  width: min(100%,300px); height: 214px; object-fit: contain; background: transparent;
  filter: drop-shadow(0 16px 20px rgba(39,105,226,.2));
}
.ai-assistant h1 { margin: 0; color: #102a5e; font-size: 21px; }
.ai-assistant__hero > p { margin: 9px auto 18px; max-width: 340px; color: #7789aa; font-size: 13px; line-height: 1.9; }
.ai-assistant__ask {
  min-height: 49px; display: flex; align-items: flex-end; gap: 7px; padding: 5px 6px 5px 5px;
  background: #fff; border: 1px solid #dce8fb; border-radius: 14px; box-shadow: 0 7px 16px rgba(43,93,168,.06);
}
.ai-assistant__ask textarea { min-width: 0; flex: 1; max-height: 120px; resize: none; border: 0; background: transparent; outline: 0; text-align: right; font: inherit; line-height: 1.7; color: #17305c; padding: 6px 10px; }
.ai-assistant__ask textarea::placeholder { color: #a6b4ca; }
.ai-assistant__ask button { width: 38px; height: 38px; flex: 0 0 38px; border: 0; border-radius: 50%; display: grid; place-items: center; color: #fff; background: linear-gradient(135deg,#4b91ff,#1d62e8); box-shadow: 0 5px 12px rgba(32,101,233,.3); }
.ai-assistant__ask svg { width: 19px; transform: scaleX(-1); }
.ai-assistant__ask.is-loading button { opacity: .72; cursor: wait; }
.ai-assistant__ask button:disabled,.ai-assistant__tool-grid button:disabled { cursor: wait; }
.ai-assistant__quota { margin: 11px 4px 0; color: #5975a3; font-size: 11px; line-height: 1.7; text-align: right; }
.ai-assistant__service-notice { display: flex; gap: 10px; align-items: flex-start; margin-top: 13px; padding: 12px 13px; border: 1px solid #cfe2ff; border-radius: 15px; background: linear-gradient(135deg,#f8fbff,#e9f3ff); text-align: right; color: #24436f; }
.ai-assistant__service-notice[hidden] { display: none; }
.ai-assistant__service-notice > i { width: 20px; height: 20px; flex: 0 0 20px; color: #377df0; }
.ai-assistant__service-notice b { display: block; font-size: 12px; }
.ai-assistant__service-notice p { margin: 3px 0 0; color: #6f85a9; font-size: 11px; line-height: 1.75; }
.ai-assistant__conversation { display: grid; gap: 10px; margin-top: 18px; }
.ai-assistant__message { border-radius: 16px; padding: 12px 14px; text-align: right; box-shadow: 0 7px 16px rgba(43,93,168,.06); overflow: hidden; }
.ai-assistant__message b { display: block; margin-bottom: 6px; font-size: 12px; }
.ai-assistant__message p { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; color: #283e68; font-size: 13px; line-height: 2; }
.ai-assistant__message--user { margin-right: 12%; background: #eaf3ff; border: 1px solid #d1e4ff; }
.ai-assistant__message--user b { color: #2874e9; }
.ai-assistant__message--assistant,.ai-assistant__message--image { margin-left: 4%; background: #fff; border: 1px solid #e1eafa; }
.ai-assistant__message--assistant b,.ai-assistant__message--image b { color: #188660; }
.ai-assistant__message--image img { display: block; width: min(100%, 360px); max-height: 420px; margin: 0 auto; object-fit: contain; border-radius: 12px; background: #edf3ff; }
.ai-assistant__tools { margin-top: 28px; }
.ai-assistant__tools h2 { font-size: 16px; color: #173267; margin: 0 0 13px; }
.ai-assistant__tool-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 11px; }
.ai-assistant__tool-grid button { min-height: 92px; border: 1px solid #e4ecfa; border-radius: 15px; background: rgba(255,255,255,.92); padding: 12px 11px; text-align: right; box-shadow: 0 7px 15px rgba(38,80,145,.04); font: inherit; color: #233e70; position: relative; }
.ai-assistant__tool-grid i { width: 33px; height: 33px; display: grid; place-items: center; padding: 8px; border-radius: 12px; background: #edf4ff; color: #3276ed; float: right; margin-left: 9px; }
.ai-assistant__tool-grid button:nth-child(2) i { background: #eafbf5; color: #19af78; }
.ai-assistant__tool-grid button:nth-child(3) i { background: #f2efff; color: #7355df; }
.ai-assistant__tool-grid button:nth-child(4) i { background: #fff5e9; color: #f19d3d; }
.ai-assistant__tool-grid b,.ai-assistant__tool-grid small { display: block; }
.ai-assistant__tool-grid b { font-size: 13px; margin-top: 4px; }
.ai-assistant__tool-grid small { clear: both; padding-top: 7px; color: #93a2ba; font-size: 11px; }
.ai-assistant__tool-grid button.is-selected { border-color: #76a9ff; background: linear-gradient(145deg,#f8fbff,#e7f1ff); box-shadow: 0 9px 18px rgba(39,105,226,.13); }
.ai-assistant__pro {
  width: 100%; border: 0; margin-top: 20px; min-height: 100px; padding: 17px 20px;
  border-radius: 18px; background: linear-gradient(125deg,#1f68ec,#5ba1ff); color: #fff;
  display: flex; justify-content: space-between; align-items: center; text-align: right;
  font: inherit; box-shadow: 0 14px 28px rgba(32,95,215,.32);
}
.ai-assistant__pro span > * { display: block; }
.ai-assistant__pro b { font-size: 15px; }
.ai-assistant__pro small { color: #e7f0ff; font-size: 11px; margin-top: 6px; }
.ai-assistant__pro em { display: inline-block; font-style: normal; background: #fff; color: #2467e9; border-radius: 9px; padding: 7px 14px; margin-top: 10px; font-size: 11px; box-shadow: 0 5px 12px rgba(14,59,151,.17); }
.ai-assistant__pro > i { width: 52px; height: 52px; border-radius: 16px; display: grid; place-items: center; color: #2769ee; background: #fff; box-shadow: 0 8px 16px rgba(14,59,151,.22); }
@media (min-width:760px) {
  .ai-assistant { padding: 20px; }
  .ai-assistant__shell { border-radius: 26px; min-height: calc(100% - 40px); }
  .ai-assistant__header { border-radius: 26px 26px 0 0; }
  .ai-assistant__content { padding: 35px; }
  .ai-assistant__orb { height: 245px; }
  .ai-assistant__orb img { width: 310px; height: 235px; }
  .ai-assistant__tool-grid { grid-template-columns: repeat(4,minmax(0,1fr)); }
  .ai-assistant__tool-grid button { min-height: 112px; }
}
@media (max-width:380px) {
  .ai-assistant__header { padding: 0 14px; }
  .ai-assistant__content { padding: 20px 14px 30px; }
  .ai-assistant__tool-grid { gap: 8px; }
  .ai-assistant__tool-grid button { min-height: 86px; padding: 10px 8px; }
  .ai-assistant__tool-grid i { width: 29px; height: 29px; padding: 7px; }
}