.gci-tool {
  --gci-bg: #f8f6f6;
  --gci-card: #ffffff;
  --gci-text: #111827;
  --gci-muted: #4b5563;
  --gci-soft: #f5f3ff;
  --gci-accent: #7c3aed;
  --gci-accent-dark: #6d28d9;
  --gci-border: rgba(148, 163, 184, 0.28);
  --gci-shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
  background: var(--gci-bg);
  color: var(--gci-text);
  padding: 24px;
  border-radius: 30px;
  font-family: inherit;
}

.gci-tool * { box-sizing: border-box; }

.gci-tool__shell {
  max-width: 1120px;
  margin: 0 auto;
}

.gci-tool__intro {
  max-width: 830px;
  margin: 0 auto 24px;
  text-align: center;
}

.gci-tool__kicker {
  display: inline-flex;
  margin: 0 0 10px;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--gci-soft);
  color: var(--gci-accent-dark);
  border: 1px solid rgba(124, 58, 237, 0.14);
  font-size: 13px;
  font-weight: 850;
  line-height: 1.2;
}

.gci-tool__title {
  margin: 0;
  color: var(--gci-text);
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.06;
  letter-spacing: -0.045em;
  font-weight: 950;
}

.gci-tool__desc {
  margin: 14px auto 0;
  color: var(--gci-muted);
  font-size: 16.5px;
  line-height: 1.7;
}

.gci-tool__mode {
  display: flex;
  width: fit-content;
  max-width: 100%;
  margin: 0 auto 18px;
  padding: 6px;
  border: 1px solid var(--gci-border);
  border-radius: 18px;
  background: #fff;
  gap: 6px;
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.05);
}

.gci-tool__mode-btn,
.gci-tool button,
.gci-tool select {
  font-family: inherit;
}

.gci-tool__mode-btn {
  border: 0;
  border-radius: 13px;
  background: transparent;
  color: #475569;
  cursor: pointer;
  font-size: 14px;
  font-weight: 900;
  padding: 10px 14px;
}

.gci-tool__mode-btn.is-active {
  background: var(--gci-accent);
  color: #fff;
}

.gci-tool__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.9fr);
  gap: 20px;
  align-items: stretch;
}

.gci-tool__panel {
  background: var(--gci-card);
  border: 1px solid var(--gci-border);
  border-radius: 28px;
  padding: 24px;
  box-shadow: var(--gci-shadow);
}

.gci-tool__panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
}

.gci-tool__panel-head strong {
  display: block;
  color: var(--gci-text);
  font-size: 18px;
  line-height: 1.25;
  font-weight: 950;
}

.gci-tool__panel-head span {
  color: #64748b;
  font-size: 13px;
  font-weight: 850;
  line-height: 1.4;
  text-align: right;
}

.gci-tool__string-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
}

.gci-tool__string {
  display: block;
  padding: 13px;
  border: 1px solid #e2e8f0;
  border-radius: 18px;
  background: #f8fafc;
}

.gci-tool__string-name,
.gci-tool__string-note {
  display: block;
  text-align: center;
}

.gci-tool__string-name {
  color: #64748b;
  font-size: 12px;
  font-weight: 900;
  line-height: 1.1;
}

.gci-tool__string-note {
  margin: 5px 0 10px;
  color: var(--gci-text);
  font-size: 20px;
  font-weight: 950;
  line-height: 1;
}

.gci-tool__select {
  width: 100%;
  min-height: 40px;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  background: #fff;
  color: var(--gci-text);
  font-size: 14px;
  font-weight: 850;
  padding: 6px 8px;
}

.gci-tool__preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.gci-tool__preset-row button {
  border: 1px solid rgba(124, 58, 237, 0.18);
  background: var(--gci-soft);
  color: var(--gci-accent-dark);
  border-radius: 999px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 900;
  padding: 9px 12px;
}

.gci-tool__note-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
}

.gci-tool__note-check input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.gci-tool__note-check span {
  display: flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  border: 1px solid #e2e8f0;
  background: #f8fafc;
  color: var(--gci-text);
  cursor: pointer;
  font-size: 15px;
  font-weight: 950;
}

.gci-tool__note-check input:checked + span {
  border-color: rgba(124, 58, 237, 0.45);
  background: var(--gci-soft);
  color: var(--gci-accent-dark);
}

.gci-tool__note-check input:focus-visible + span,
.gci-tool button:focus-visible,
.gci-tool select:focus-visible {
  outline: 3px solid rgba(124, 58, 237, 0.24);
  outline-offset: 3px;
}

.gci-tool__helper,
.gci-tool__privacy {
  margin: 14px 0 0;
  color: #64748b;
  font-size: 13.5px;
  line-height: 1.55;
}

.gci-tool__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.gci-tool__primary,
.gci-tool__secondary,
.gci-tool__copy {
  min-height: 46px;
  border-radius: 14px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 950;
  padding: 12px 16px;
}

.gci-tool__primary {
  border: 0;
  background: var(--gci-accent);
  color: #fff;
  box-shadow: 0 14px 28px rgba(124, 58, 237, 0.22);
}

.gci-tool__primary:hover,
.gci-tool__primary:focus {
  background: var(--gci-accent-dark);
}

.gci-tool__secondary,
.gci-tool__copy {
  border: 1px solid var(--gci-border);
  background: #fff;
  color: var(--gci-text);
}

.gci-tool__main-result {
  padding: 24px;
  border-radius: 24px;
  background: #111827;
  color: #fff;
}

.gci-tool__main-result small,
.gci-tool__details small,
.gci-tool__mini small {
  display: block;
  margin: 0 0 8px;
  color: #64748b;
  font-size: 12.5px;
  font-weight: 950;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.gci-tool__main-result small { color: #cbd5e1; }

.gci-tool__main-result strong {
  display: block;
  color: #fff;
  font-size: clamp(34px, 5vw, 52px);
  line-height: 0.98;
  letter-spacing: -0.055em;
  font-weight: 950;
}

.gci-tool__main-result span {
  display: block;
  margin-top: 12px;
  color: #dbeafe;
  font-size: 14px;
  line-height: 1.6;
}

.gci-tool__mini-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.gci-tool__mini,
.gci-tool__details > div {
  padding: 16px;
  border-radius: 18px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
}

.gci-tool__mini strong {
  display: block;
  color: var(--gci-text);
  font-size: 18px;
  line-height: 1.25;
  font-weight: 950;
}

.gci-tool__details {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

.gci-tool__details p {
  margin: 0;
  color: var(--gci-muted);
  font-size: 14px;
  line-height: 1.55;
}

.gci-tool__copy-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.gci-tool__copy-row span {
  color: var(--gci-accent-dark);
  font-size: 13px;
  font-weight: 850;
}

.gci-tool__tips {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.gci-tool__tips div {
  padding: 18px;
  border: 1px solid rgba(124, 58, 237, 0.14);
  border-radius: 20px;
  background: var(--gci-soft);
}

.gci-tool__tips strong,
.gci-tool__tips span {
  display: block;
}

.gci-tool__tips strong {
  margin-bottom: 6px;
  color: #4c1d95;
  font-size: 15px;
  font-weight: 950;
}

.gci-tool__tips span {
  color: #5b21b6;
  font-size: 13.5px;
  line-height: 1.5;
}

.gci-tool .is-hidden { display: none; }

@media (max-width: 900px) {
  .gci-tool { padding: 18px; border-radius: 24px; }
  .gci-tool__grid { grid-template-columns: 1fr; }
  .gci-tool__string-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .gci-tool__tips { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .gci-tool__intro { text-align: left; }
  .gci-tool__panel { padding: 18px; border-radius: 22px; }
  .gci-tool__mode { width: 100%; }
  .gci-tool__mode-btn { flex: 1; }
  .gci-tool__note-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .gci-tool__string-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gci-tool__mini-grid { grid-template-columns: 1fr; }
  .gci-tool__actions button { width: 100%; }
}