/* ============================================================
   VS SHEET · sheet.css
   Skeleton: sticky toolbar, formula bar, row gutter, section
   frames, status bar. Everything is a bordered cell.
   ============================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body.sv-body {
  margin: 0;
  color: var(--sv-ink);
  font-family: var(--sv-sans);
  font-size: var(--sv-fs-body);
  line-height: 1.75;
  background-color: var(--sv-paper);
  background-image:
    linear-gradient(to right, rgba(17, 20, 24, 0.042) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(17, 20, 24, 0.042) 1px, transparent 1px);
  background-size: var(--sv-cell) var(--sv-cell);
  background-position: -1px -1px;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

p,
ul,
ol,
dl,
figure,
table,
h1,
h2,
h3,
h4 {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

button {
  font: inherit;
  color: inherit;
  border: 0;
  background: none;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--sv-red);
  outline-offset: 1px;
}

::selection {
  background: var(--sv-ink);
  color: var(--sv-paper);
}

.sv-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  padding: 10px 16px;
  background: var(--sv-ink);
  color: var(--sv-paper);
  font-size: var(--sv-fs-sm);
}

.sv-skip:focus {
  left: 8px;
  top: 8px;
}

.sv-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ============================================================
   1. TOOLBAR
   ============================================================ */

.sv-top {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(247, 245, 239, 0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--sv-ink);
}

.sv-top__row {
  display: flex;
  align-items: stretch;
  min-height: var(--sv-top);
  max-width: var(--sv-wrap);
  margin: 0 auto;
  border-left: 1px solid var(--sv-line);
  border-right: 1px solid var(--sv-line);
}

.sv-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 16px;
  border-right: 1px solid var(--sv-line);
  flex: 0 0 auto;
}

.sv-brand__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background: var(--sv-ink);
  color: var(--sv-paper);
  font-family: var(--sv-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  flex: 0 0 auto;
}

.sv-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.sv-brand__text b {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.sv-brand__text i {
  font-style: normal;
  font-family: var(--sv-mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  color: var(--sv-ink-4);
  text-transform: uppercase;
}

.sv-nav {
  display: flex;
  flex: 1 1 auto;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.sv-nav::-webkit-scrollbar {
  display: none;
}

.sv-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  padding: 0 13px;
  font-size: 13.5px;
  letter-spacing: 0.01em;
  color: var(--sv-ink-2);
  white-space: nowrap;
  border-right: 1px solid transparent;
  transition: background 0.2s var(--sv-ease), color 0.2s var(--sv-ease);
}

.sv-nav__link::after {
  content: "";
  position: absolute;
  left: 13px;
  right: 13px;
  bottom: 12px;
  height: 2px;
  background: var(--sv-red);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.24s var(--sv-ease);
}

.sv-nav__link:hover {
  background: rgba(17, 20, 24, 0.045);
}

.sv-nav__link:hover::after {
  transform: scaleX(1);
}

.sv-nav__link.is-active {
  background: var(--sv-paper-2);
  color: var(--sv-ink);
  font-weight: 700;
}

.sv-nav__link.is-active::after {
  transform: scaleX(1);
}

.sv-top__act {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 12px;
  border-left: 1px solid var(--sv-line);
  flex: 0 0 auto;
}

.sv-menu-btn {
  display: none;
  width: 54px;
  border-left: 1px solid var(--sv-line);
  padding: 0;
  place-items: center;
}

.sv-menu-btn span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--sv-ink);
  margin: 2.5px auto;
  transition: transform 0.2s var(--sv-ease), opacity 0.2s var(--sv-ease);
}

.sv-top.is-open .sv-menu-btn span:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

.sv-top.is-open .sv-menu-btn span:nth-child(2) {
  opacity: 0;
}

.sv-top.is-open .sv-menu-btn span:nth-child(3) {
  transform: translateY(-4px) rotate(-45deg);
}

/* ============================================================
   2. FORMULA BAR
   ============================================================ */

.sv-fx {
  display: flex;
  align-items: center;
  max-width: var(--sv-wrap);
  margin: 0 auto;
  height: var(--sv-fx);
  border-left: 1px solid var(--sv-line);
  border-right: 1px solid var(--sv-line);
  border-top: 1px solid var(--sv-line);
  background: var(--sv-paper-2);
  font-family: var(--sv-mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
}

.sv-fx__ref {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 74px;
  align-self: stretch;
  border-right: 1px solid var(--sv-line);
  color: var(--sv-red);
  font-weight: 700;
  font-size: 11.5px;
  flex: 0 0 auto;
  transition: color 0.2s var(--sv-ease);
}

.sv-fx__fn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  align-self: stretch;
  border-right: 1px solid var(--sv-line);
  color: var(--sv-ink-4);
  font-style: italic;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 12px;
  flex: 0 0 auto;
}

.sv-fx__text {
  flex: 1 1 auto;
  min-width: 0;
  padding: 0 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--sv-ink-3);
}

.sv-fx__text b {
  color: var(--sv-ink);
  font-weight: 700;
}

.sv-fx__tag {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 14px;
  align-self: stretch;
  border-left: 1px solid var(--sv-line);
  color: var(--sv-ok);
  flex: 0 0 auto;
}

.sv-fx__tag::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--sv-ok);
}

/* ============================================================
   3. SECTIONS + ROW GUTTER
   ============================================================ */

.sv-main {
  counter-reset: sv-row;
  max-width: var(--sv-wrap);
  margin: 0 auto;
  border-left: 1px solid var(--sv-line);
  border-right: 1px solid var(--sv-line);
  background: transparent;
}

.sv-sec {
  counter-increment: sv-row;
  position: relative;
  border-bottom: 1px solid var(--sv-line);
}

.sv-sec__inner {
  position: relative;
  padding: 66px var(--sv-pad) 66px calc(var(--sv-pad) + var(--sv-gutter));
  background-image: linear-gradient(
    to right,
    transparent calc(var(--sv-gutter) + var(--sv-pad) - 1px),
    var(--sv-line) calc(var(--sv-gutter) + var(--sv-pad) - 1px),
    var(--sv-line) calc(var(--sv-gutter) + var(--sv-pad)),
    transparent calc(var(--sv-gutter) + var(--sv-pad))
  );
}

.sv-sec__inner::before {
  content: counter(sv-row, decimal-leading-zero);
  position: absolute;
  left: calc(var(--sv-pad) + 4px);
  top: 68px;
  font-family: var(--sv-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--sv-line-2);
}

.sv-sec--tight .sv-sec__inner {
  padding-top: 34px;
  padding-bottom: 34px;
}

.sv-sec--flush .sv-sec__inner {
  padding-left: 0;
  padding-right: 0;
  background-image: none;
}

.sv-sec--flush .sv-sec__inner::before {
  display: none;
}

.sv-sec--ink {
  background: var(--sv-ink);
  color: var(--sv-paper);
  border-bottom-color: var(--sv-ink);
}

.sv-sec--ink .sv-sec__inner {
  background-image: linear-gradient(
    to right,
    transparent calc(var(--sv-gutter) + var(--sv-pad) - 1px),
    var(--sv-line-ink) calc(var(--sv-gutter) + var(--sv-pad) - 1px),
    var(--sv-line-ink) calc(var(--sv-gutter) + var(--sv-pad)),
    transparent calc(var(--sv-gutter) + var(--sv-pad))
  );
}

.sv-sec--ink .sv-sec__inner::before {
  color: #5a646e;
}

.sv-sec--wash {
  background: var(--sv-paper-3);
}

.sv-sec--paper2 {
  background: var(--sv-paper-2);
}

/* ============================================================
   4. SECTION HEADINGS
   ============================================================ */

.sv-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
  font-family: var(--sv-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sv-ink-4);
}

.sv-crumb a:hover {
  color: var(--sv-red);
}

.sv-crumb span[aria-current] {
  color: var(--sv-ink-2);
}

.sv-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-family: var(--sv-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sv-red);
}

.sv-kicker::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--sv-red);
  flex: 0 0 auto;
}

.sv-kicker em {
  font-style: normal;
  color: var(--sv-ink-4);
  letter-spacing: 0.2em;
}

.sv-title {
  font-size: var(--sv-fs-h2);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

.sv-title--xl {
  font-size: var(--sv-fs-h1);
  line-height: 1.06;
  letter-spacing: -0.035em;
}

.sv-title--sm {
  font-size: var(--sv-fs-h3);
  line-height: 1.4;
  letter-spacing: -0.005em;
}

.sv-title em {
  font-style: normal;
  color: var(--sv-red);
}

.sv-ink .sv-title em,
.sv-sec--ink .sv-title em {
  color: #f0a293;
}

.sv-lede {
  max-width: 60ch;
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--sv-ink-3);
}

.sv-sec--ink .sv-lede {
  color: #b4bcc4;
}

.sv-sub {
  margin-top: 10px;
  font-family: var(--sv-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sv-ink-4);
}

.sv-head-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 30px;
}

.sv-head-note {
  max-width: 34ch;
  font-size: 13px;
  line-height: 1.7;
  color: var(--sv-ink-4);
  border-left: 2px solid var(--sv-red);
  padding-left: 12px;
}

/* ============================================================
   5. GRID
   ============================================================ */

.sv-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 22px;
}

.sv-grid--tight {
  gap: 12px;
}

.sv-col-3 { grid-column: span 3; }
.sv-col-4 { grid-column: span 4; }
.sv-col-5 { grid-column: span 5; }
.sv-col-6 { grid-column: span 6; }
.sv-col-7 { grid-column: span 7; }
.sv-col-8 { grid-column: span 8; }
.sv-col-9 { grid-column: span 9; }
.sv-col-12 { grid-column: span 12; }

.sv-stack {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.sv-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (max-width: 900px) {
  .sv-col-3,
  .sv-col-4,
  .sv-col-5,
  .sv-col-6,
  .sv-col-7,
  .sv-col-8,
  .sv-col-9 {
    grid-column: span 12;
  }
  .sv-sec__inner {
    padding-top: 44px;
    padding-bottom: 44px;
    padding-left: var(--sv-pad);
    background-image: none;
  }
  .sv-sec__inner::before {
    display: none;
  }
}

/* ============================================================
   6. FOOTER / STATUS BAR
   ============================================================ */

.sv-foot {
  background: var(--sv-ink);
  color: #cdd3d9;
  font-size: 13px;
}

.sv-foot__row {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  max-width: var(--sv-wrap);
  margin: 0 auto;
  border-left: 1px solid var(--sv-line-ink);
  border-right: 1px solid var(--sv-line-ink);
}

.sv-foot__cell {
  padding: 34px 24px;
  border-right: 1px solid var(--sv-line-ink);
}

.sv-foot__cell:last-child {
  border-right: 0;
}

.sv-foot__cell h3 {
  margin-bottom: 14px;
  font-family: var(--sv-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #7d8892;
}

.sv-foot__cell a {
  display: block;
  padding: 4px 0;
  color: #c3cad1;
  transition: color 0.18s var(--sv-ease);
}

.sv-foot__cell a:hover {
  color: #fff;
}

.sv-foot__cell p {
  line-height: 1.8;
}

.sv-foot__cell--brand {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.sv-foot__cell--brand .sv-brand__mark {
  background: var(--sv-paper);
  color: var(--sv-ink);
}

.sv-foot__cell--brand p b {
  display: block;
  margin-bottom: 6px;
  font-size: 15px;
  letter-spacing: 0.06em;
  color: #fff;
}

.sv-foot__cell--brand p span {
  font-size: 12px;
  color: #8d979f;
}

.sv-foot__bar {
  max-width: var(--sv-wrap);
  margin: 0 auto;
  border-top: 1px solid var(--sv-line-ink);
  border-left: 1px solid var(--sv-line-ink);
  border-right: 1px solid var(--sv-line-ink);
  padding: 16px 24px 22px;
  display: grid;
  gap: 8px;
  font-family: var(--sv-mono);
  font-size: 10.5px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: #7d8892;
}

.sv-foot__bar p:last-child {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  color: #5f6a73;
}

@media (max-width: 900px) {
  .sv-foot__row {
    grid-template-columns: 1fr 1fr;
  }
  .sv-foot__cell {
    border-bottom: 1px solid var(--sv-line-ink);
  }
  .sv-foot__cell--brand {
    grid-column: span 2;
  }
}

@media (max-width: 560px) {
  .sv-foot__row {
    grid-template-columns: 1fr;
  }
  .sv-foot__cell--brand {
    grid-column: span 1;
  }
}

/* ============================================================
   7. REVEAL (progressive: visible by default)
   ============================================================ */

.sv-js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
}

.sv-js [data-reveal].is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.6s var(--sv-ease), transform 0.6s var(--sv-ease);
}

@media (prefers-reduced-motion: reduce) {
  .sv-js [data-reveal] {
    opacity: 1;
    transform: none;
  }
  * {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ============================================================
   8. MOBILE TOOLBAR
   ============================================================ */

@media (max-width: 1180px) {
  .sv-menu-btn {
    display: grid;
  }
  .sv-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    background: var(--sv-paper-2);
    border-bottom: 1px solid var(--sv-ink);
    max-height: 70vh;
    overflow-y: auto;
  }
  .sv-top.is-open .sv-nav {
    display: flex;
  }
  .sv-nav__link {
    padding: 14px 20px;
    border-bottom: 1px solid var(--sv-line);
    border-right: 0;
  }
  .sv-nav__link::after {
    left: 0;
    right: auto;
    bottom: 0;
    width: 3px;
    height: 100%;
    transform: scaleY(0);
  }
  .sv-nav__link.is-active::after,
  .sv-nav__link:hover::after {
    transform: scaleY(1);
  }
  .sv-brand__text i {
    display: none;
  }
  .sv-top__act {
    margin-left: auto;
  }
}

@media (max-width: 760px) {
  .sv-top__act {
    display: none;
  }
  .sv-brand {
    border-right: 0;
  }
  .sv-fx__tag {
    display: none;
  }
  .sv-fx__text {
    font-size: 10px;
  }
}