.toolbox-page {
  background: #f5f8fb;
}

.toolbox-hero {
  min-height: 510px;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(310px, .65fr);
  align-items: center;
  gap: clamp(56px, 9vw, 130px);
  padding-block: 82px;
}

.toolbox-hero-copy {
  max-width: 760px;
}

.toolbox-hero h1 {
  margin: 16px 0 24px;
  color: var(--navy-950);
  font-size: clamp(3.3rem, 7vw, 6.2rem);
  font-weight: 780;
  letter-spacing: -.072em;
  line-height: .93;
}

.toolbox-hero h1 span {
  color: var(--blue-600);
}

.toolbox-hero-copy > p {
  max-width: 680px;
  margin: 0;
  color: var(--slate);
  font-size: clamp(1rem, 1.5vw, 1.18rem);
  line-height: 1.7;
}

.toolbox-principles {
  position: relative;
  overflow: hidden;
  padding: 30px;
  color: #dceaf5;
  background: var(--navy-950);
  border: 1px solid rgba(1, 169, 244, .28);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 60px rgba(0, 22, 47, .17);
}

.toolbox-principles::after {
  position: absolute;
  right: -65px;
  bottom: -70px;
  width: 180px;
  height: 180px;
  content: "";
  border: 1px solid rgba(1, 169, 244, .2);
  border-radius: 50%;
  box-shadow: 0 0 0 28px rgba(1, 169, 244, .05), 0 0 0 58px rgba(1, 169, 244, .035);
}

.principles-code,
.tool-category {
  color: var(--blue-500);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: .66rem;
  font-weight: 750;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.toolbox-principles > strong {
  display: block;
  max-width: 260px;
  margin-top: 12px;
  color: #fff;
  font-size: 1.55rem;
  letter-spacing: -.035em;
  line-height: 1.16;
}

.toolbox-principles ul {
  position: relative;
  z-index: 1;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.toolbox-principles li {
  display: flex;
  align-items: center;
  gap: 13px;
  padding-block: 11px;
  border-top: 1px solid rgba(191, 218, 238, .14);
  color: #bcd0df;
  font-size: .86rem;
}

.toolbox-principles li span {
  color: var(--blue-500);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: .65rem;
}

.tools-section {
  padding-block: 78px 98px;
}

.tools-heading {
  display: grid;
  grid-template-columns: 1fr minmax(300px, 480px);
  align-items: end;
  gap: 48px;
  margin-bottom: 34px;
}

.tools-heading h2,
.toolbox-help h2 {
  margin: 6px 0 0;
  color: var(--navy-950);
  font-size: clamp(2rem, 4vw, 3.2rem);
  letter-spacing: -.055em;
  line-height: 1.02;
}

.tools-heading > p {
  margin: 0;
  color: var(--muted);
  font-size: .94rem;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.tool-card {
  position: relative;
  min-height: 390px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 28px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 28px rgba(0, 36, 74, .045);
  text-decoration: none;
}

.tool-card-live {
  border-color: rgba(0, 119, 184, .42);
  box-shadow: 0 18px 45px rgba(0, 69, 118, .1);
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.tool-card-live:hover {
  border-color: var(--blue-600);
  box-shadow: 0 24px 54px rgba(0, 69, 118, .15);
  transform: translateY(-3px);
}

.tool-card-live::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  content: "";
  background: var(--blue-500);
}

.tool-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.tool-number {
  color: #91a0b2;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: .7rem;
  font-weight: 750;
  letter-spacing: .08em;
}

.tool-state {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: .68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.tool-card-live .tool-state {
  color: #157c49;
}

.tool-state > span {
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(36, 179, 107, .12);
}

.tool-mark {
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  margin-block: 34px 26px;
  color: var(--blue-600);
  background: var(--blue-50);
  border: 1px solid #c4e3f8;
  border-radius: 12px;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .06em;
}

.tool-card-upcoming .tool-mark {
  color: #66778a;
  background: #f2f5f8;
  border-color: #dce3ea;
}

.tool-card-copy h3 {
  margin: 7px 0 10px;
  color: var(--navy-950);
  font-size: 1.55rem;
  letter-spacing: -.035em;
}

.tool-card-copy p {
  max-width: 540px;
  margin: 0;
  color: var(--slate);
  font-size: .86rem;
  line-height: 1.65;
}

.tool-action {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: 26px;
  color: var(--blue-600);
  border-top: 1px solid var(--line-soft);
  font-size: .82rem;
  font-weight: 780;
}

.tool-action > span {
  font-size: 1.15rem;
  transition: transform 180ms ease;
}

.tool-card-live:hover .tool-action > span {
  transform: translateX(4px);
}

.tool-action-muted {
  color: #8a96a6;
}

.toolbox-help {
  color: #dceaf5;
  background: var(--navy-900);
  border-top: 1px solid rgba(1, 169, 244, .26);
}

.toolbox-help-inner {
  display: grid;
  grid-template-columns: 1fr minmax(300px, 470px);
  align-items: center;
  gap: 70px;
  padding-block: 72px;
}

.toolbox-help h2 {
  color: #fff;
}

.toolbox-help-copy p {
  margin: 0 0 24px;
  color: #b5c9d9;
}

.help-button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  color: #fff;
  background: var(--blue-600);
  border: 1px solid rgba(116, 207, 255, .4);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: .84rem;
  font-weight: 750;
  transition: background 160ms ease, transform 160ms ease;
}

.help-button:hover {
  background: var(--blue-500);
  transform: translateY(-1px);
}

@media (max-width: 920px) {
  .toolbox-hero { grid-template-columns: 1fr; gap: 42px; padding-block: 64px; }
  .toolbox-principles { max-width: 620px; }
  .tools-heading { grid-template-columns: 1fr; gap: 18px; }
  .toolbox-help-inner { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 680px) {
  .toolbox-page .main-nav { display: flex; }
  .toolbox-hero { padding-block: 48px; }
  .toolbox-hero h1 { font-size: clamp(3.1rem, 16vw, 4.5rem); }
  .toolbox-hero-copy > p { font-size: .97rem; }
  .tools-section { padding-block: 56px 68px; }
  .tool-grid { grid-template-columns: 1fr; }
  .tool-card { min-height: 370px; padding: 24px; }
  .toolbox-help-inner { padding-block: 56px; }
}

@media (prefers-reduced-motion: reduce) {
  .tool-card-live:hover,
  .help-button:hover { transform: none; }
}