/* ==========================================================================
   AlphaSync Global — Components
   Buttons, tags, definition grids, tables, steps, notices, forms, dialogs,
   interface previews (.mock) and architecture diagrams (.dg).
   ========================================================================== */

/* --- Buttons ------------------------------------------------------------ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 0 20px; border: 1px solid transparent; border-radius: var(--r-control);
  font-size: 0.9375rem; font-weight: 600; letter-spacing: -0.005em; line-height: 1; text-decoration: none; white-space: nowrap;
  cursor: pointer; transition: background-color 0.15s, border-color 0.15s, color 0.15s;
}
.btn--primary { background: var(--emerald-700); color: var(--white); }
.btn--primary:hover { background: var(--emerald-600); color: var(--white); }
.btn--ghost { border-color: var(--border); color: var(--text); background: transparent; }
.btn--ghost:hover { border-color: var(--text); color: var(--text); }
.btn--sm { min-height: 38px; padding: 0 14px; font-size: 0.875rem; }
.band--dark .btn--primary, .band--deep .btn--primary, .page-hero .btn--primary, .hero .btn--primary, .site-header .btn--primary, .mobile-nav .btn--primary {
  background: var(--emerald-500); color: var(--navy-900);
}
.band--dark .btn--primary:hover, .band--deep .btn--primary:hover, .page-hero .btn--primary:hover, .hero .btn--primary:hover, .site-header .btn--primary:hover, .mobile-nav .btn--primary:hover {
  background: #34D399; color: var(--navy-900);
}
.band--dark .btn--ghost, .band--deep .btn--ghost, .page-hero .btn--ghost, .hero .btn--ghost, .site-header .btn--ghost, .mobile-nav .btn--ghost {
  border-color: var(--line-dark-strong); color: var(--on-dark);
}
.band--dark .btn--ghost:hover, .band--deep .btn--ghost:hover, .page-hero .btn--ghost:hover, .hero .btn--ghost:hover, .site-header .btn--ghost:hover, .mobile-nav .btn--ghost:hover {
  border-color: var(--on-dark); color: var(--on-dark);
}
.btn-row { display: flex; flex-wrap: wrap; gap: var(--s-3); align-items: center; }
.btn[data-pending]::after {
  content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--warning); margin-left: 2px;
}

.textlink { font-weight: 600; text-decoration: underline; text-decoration-color: color-mix(in srgb, currentColor 35%, transparent); }
.textlink:hover { text-decoration-color: currentColor; }

/* --- Tags --------------------------------------------------------------- */
.tag {
  display: inline-flex; align-items: center; gap: 7px; padding: 4px 9px; border-radius: var(--r-tag);
  font-size: 0.78125rem; font-weight: 500; line-height: 1.3; border: 1px solid var(--border); color: var(--text-2); background: var(--white);
}
.tag--status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--warning); flex: none; }
.tag--live::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--success); flex: none; }
.band--dark .tag, .band--deep .tag, .page-hero .tag, .hero .tag { background: rgba(255,255,255,0.04); border-color: var(--line-dark-strong); color: var(--on-dark-2); }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; }

/* --- Definition grid: hairline-ruled items, not cards ------------------- */
.defs { display: grid; gap: 0 var(--s-6); grid-template-columns: repeat(2, minmax(0, 1fr)); }
.defs--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.defs--1 { grid-template-columns: 1fr; }
.defs__item { padding-block: var(--s-5); border-top: 1px solid var(--border); }
.defs dt { font-weight: 600; font-size: 1.0625rem; letter-spacing: -0.012em; line-height: 1.35; }
.defs dd { margin-top: 6px; color: var(--text-2); font-size: var(--fs-small); line-height: 1.6; }
.band--dark .defs__item, .band--deep .defs__item { border-top-color: var(--line-dark); }
.band--dark .defs dd, .band--deep .defs dd { color: var(--on-dark-2); }

/* --- Spec table --------------------------------------------------------- */
.spec { font-size: var(--fs-small); }
.spec th, .spec td { text-align: left; vertical-align: top; padding: 14px 0; border-top: 1px solid var(--border); }
.spec th { width: 34%; padding-right: var(--s-5); font-weight: 500; color: var(--text-2); }
.spec td { color: var(--text); }
.spec tr:last-child th, .spec tr:last-child td { border-bottom: 1px solid var(--border); }
.band--dark .spec th, .band--dark .spec td, .band--deep .spec th, .band--deep .spec td { border-color: var(--line-dark); }
.band--dark .spec th, .band--deep .spec th { color: var(--on-dark-3); }
.band--dark .spec td, .band--deep .spec td { color: var(--on-dark); }

/* --- Steps: used only for real sequences -------------------------------- */
.steps { counter-reset: step; display: grid; gap: 0; }
.steps > li { counter-increment: step; display: grid; grid-template-columns: 56px 1fr; gap: 0 var(--s-4); padding-block: var(--s-5); border-top: 1px solid var(--border); }
.steps > li::before {
  content: counter(step, decimal-leading-zero); font-family: var(--font-mono); font-size: 0.875rem; font-weight: 500; color: var(--emerald-700); padding-top: 4px;
}
.steps h3 { font-size: 1.0625rem; }
.steps p { grid-column: 2; margin-top: 4px; color: var(--text-2); font-size: var(--fs-small); }
.band--dark .steps > li, .band--deep .steps > li { border-top-color: var(--line-dark); }
.band--dark .steps > li::before, .band--deep .steps > li::before { color: var(--emerald-500); }
.band--dark .steps p, .band--deep .steps p { color: var(--on-dark-2); }
.steps--row { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0 var(--s-5); }
.steps--row > li { grid-template-columns: 1fr; align-content: start; border-top-width: 2px; border-top-color: var(--emerald-700); }
.steps--row > li::before { padding: 0 0 var(--s-3); }
.steps--row p { grid-column: 1; }

/* --- Product index rows -------------------------------------------------- */
.plist { border-bottom: 1px solid var(--border); }
.plist__row {
  display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 5fr) auto; gap: var(--s-4) var(--s-6); align-items: baseline;
  padding-block: var(--s-5); border-top: 1px solid var(--border); text-decoration: none; color: var(--text);
  transition: padding-left 0.2s var(--ease);
}
.plist__row:hover { color: var(--text); padding-left: var(--s-3); }
.plist__row:hover h3 { color: var(--emerald-700); }
.plist__row h3 { font-size: clamp(1.25rem, 1.1rem + 0.7vw, 1.625rem); font-weight: 700; letter-spacing: -0.025em; transition: color 0.15s; }
.plist__row p { color: var(--text-2); font-size: var(--fs-small); }
.plist__row .tag { align-self: center; }

/* --- Product overview blocks (products page) ----------------------------- */
.pblock { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(2rem, 4vw, 4rem); align-items: center; padding-block: var(--s-8); border-top: 1px solid var(--border); }
.pblock:nth-child(even) { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.pblock:nth-child(even) > :first-child { order: 2; }
.pblock h2 { font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2.125rem); }
.pblock p { margin-top: var(--s-3); color: var(--text-2); }
.pblock .ticks { margin-top: var(--s-5); }
.pblock .btn-row { margin-top: var(--s-5); }
.pblock .tag { margin-bottom: var(--s-4); }

.ticks { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px var(--s-5); font-size: var(--fs-small); }
.ticks li { position: relative; padding-left: 20px; }
.ticks li::before { content: ""; position: absolute; left: 0; top: 0.72em; width: 10px; height: 2px; background: var(--emerald-600); }
.band--dark .ticks li::before, .band--deep .ticks li::before { background: var(--emerald-500); }
.ticks--1 { grid-template-columns: 1fr; }

/* --- Notices and disclosures -------------------------------------------- */
.notice { padding: var(--s-4) var(--s-5); border-left: 3px solid var(--emerald-700); background: var(--warm); font-size: var(--fs-small); line-height: 1.6; color: var(--text); }
.notice strong { display: block; margin-bottom: 2px; }
.notice--risk { border-left-color: var(--warning); }
.notice--draft { border-left-color: var(--warning); background: #FFF7ED; }
.band--warm .notice { background: var(--white); }
.band--dark .notice, .band--deep .notice { background: rgba(255,255,255,0.04); color: var(--on-dark-2); }
.band--dark .notice strong, .band--deep .notice strong { color: var(--on-dark); }
.notice + .notice { margin-top: var(--s-3); }

/* --- Closing call to action --------------------------------------------- */
.cta { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: var(--s-6); align-items: end; }
.cta h2 { font-size: clamp(2rem, 1.4rem + 2.6vw, 3.5rem); letter-spacing: -0.035em; font-weight: 800; }
.cta .lede { margin-top: var(--s-4); }
.cta .btn-row { justify-content: flex-end; }

/* --- Figures ------------------------------------------------------------ */
.figure__canvas { overflow-x: auto; border-radius: var(--r-panel); }
.figure__canvas > svg { min-width: 680px; width: 100%; height: auto; }
.figure--fit .figure__canvas > svg { min-width: 0; }
.figure figcaption, .mock__caption { margin-top: var(--s-3); font-size: var(--fs-micro); color: var(--text-2); line-height: 1.5; }
.band--dark .figure figcaption, .band--deep .figure figcaption, .band--dark .mock__caption, .band--deep .mock__caption, .hero .mock__caption, .page-hero .mock__caption { color: var(--on-dark-3); }

/* --- Architecture diagrams (inline SVG) --------------------------------- */
.dg { --dg-bg: var(--navy-900); --dg-box: var(--navy-800); --dg-stroke: rgba(255,255,255,0.16); --dg-text: #FFFFFF; --dg-sub: #A9BCCB; --dg-edge: #4D6A82; --dg-group: rgba(255,255,255,0.08); --dg-em: var(--emerald-500); --dg-em-fill: rgba(16,185,129,0.10); font-family: var(--font-sans); }
.dg--light { --dg-bg: #FFFFFF; --dg-box: #FFFFFF; --dg-stroke: #CBD5E1; --dg-text: #172B3A; --dg-sub: #64748B; --dg-edge: #94A3B8; --dg-group: #E2E8F0; --dg-em: var(--emerald-700); --dg-em-fill: #ECFDF5; }
.dg-bg { fill: var(--dg-bg); }
.dg-box { fill: var(--dg-box); stroke: var(--dg-stroke); stroke-width: 1; }
.dg-box--em { fill: var(--dg-em-fill); stroke: var(--dg-em); }
.dg-title { fill: var(--dg-text); font-size: 13px; font-weight: 600; letter-spacing: -0.01em; }
.dg-sub { fill: var(--dg-sub); font-size: 10.5px; font-family: var(--font-mono); }
.dg-edge { stroke: var(--dg-edge); stroke-width: 1.25; fill: none; }
.dg-edge--em { stroke: var(--dg-em); }
.dg-edge--dash { stroke-dasharray: 4 4; }
.dg-arrow { fill: var(--dg-edge); }
.dg-arrow--em { fill: var(--dg-em); }
.dg-group { fill: none; stroke: var(--dg-group); stroke-width: 1; stroke-dasharray: 2 4; }
.dg-group-label { fill: var(--dg-sub); font-size: 11px; font-weight: 500; }
.dg-dot { fill: var(--dg-em); }
.dg-faint { stroke: var(--dg-group); fill: none; stroke-width: 1; }
.dg-node-label { fill: var(--dg-text); font-size: 12px; font-weight: 600; }

/* --- Interface previews --------------------------------------------------
   A consistent "AlphaSync terminal" language shared by every product mock. */
.mock { --m-bg: #081C2D; --m-panel: #0C2438; --m-line: rgba(255,255,255,0.08); --m-text: #E6EEF4; --m-dim: #7F97AA; --m-up: #10B981; --m-down: #F87171;
  background: var(--m-bg); color: var(--m-text); border: 1px solid var(--line-dark-strong); border-radius: var(--r-panel); overflow: hidden;
  font-size: 12.5px; line-height: 1.45; box-shadow: var(--shadow-window); }
.band--light .mock, .band--warm .mock, .band--off .mock { box-shadow: 0 30px 60px -30px rgba(7,24,39,0.45); }
.mock__bar { display: flex; align-items: center; gap: var(--s-4); padding: 10px 14px; border-bottom: 1px solid var(--m-line); background: rgba(255,255,255,0.02); }
.mock__title { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 12.5px; white-space: nowrap; }
.mock__title svg { width: 16px; height: 16px; }
.mock__tabs { display: flex; gap: 2px; margin-left: auto; font-family: var(--font-mono); font-size: 11px; color: var(--m-dim); overflow: hidden; }
.mock__tabs span { padding: 3px 8px; border-radius: 3px; white-space: nowrap; }
.mock__tabs .is-on { background: rgba(16,185,129,0.14); color: var(--m-up); }
.mock__body { display: grid; grid-template-columns: minmax(0, 1fr); background: var(--m-bg); }
.mock__body--2 { grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr); }
.mock__body--side { grid-template-columns: 190px minmax(0, 1fr); }
.mock__col { display: grid; grid-template-columns: minmax(0, 1fr); align-content: start; min-width: 0; }
.mock__col + .mock__col, .m-side + .mock__col, .mock__body--2 > .m-panel + .mock__col { border-left: 1px solid var(--m-line); }
.mock__col > * + *, .mock__body:not(.mock__body--2):not(.mock__body--side) > * + * { border-top: 1px solid var(--m-line); }
.mock__foot { display: flex; justify-content: space-between; gap: var(--s-4); padding: 8px 14px; border-top: 1px solid var(--m-line); font-family: var(--font-mono); font-size: 10.5px; color: var(--m-dim); }
.m-panel { background: var(--m-bg); padding: 12px 14px; min-width: 0; overflow: hidden; }
.m-panel--raised { background: var(--m-panel); }
.m-label { font-size: 10.5px; font-weight: 500; color: var(--m-dim); margin-bottom: 8px; display: flex; justify-content: space-between; gap: 8px; }
.m-label b { font-family: var(--font-mono); font-weight: 500; color: var(--m-text); }
.m-chart svg { width: 100%; height: auto; }
.m-quotes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--m-line); }
.m-quote { background: var(--m-bg); padding: 10px 14px; display: grid; grid-template-columns: 1fr auto; gap: 2px 8px; align-items: center; }
.m-quote__sym { font-family: var(--font-mono); font-size: 11px; color: var(--m-dim); }
.m-quote__px { font-family: var(--font-mono); font-size: 15px; font-weight: 600; grid-column: 1; }
.m-quote__chg { font-family: var(--font-mono); font-size: 11px; grid-column: 1; }
.m-quote svg { grid-row: 1 / span 3; grid-column: 2; width: 64px; height: 28px; }
.up { color: var(--m-up); } .down { color: var(--m-down); } .dim { color: var(--m-dim); }
.m-log { font-family: var(--font-mono); font-size: 10.5px; line-height: 1.75; color: var(--m-dim); white-space: nowrap; overflow: hidden; }
.m-log div { overflow: hidden; text-overflow: ellipsis; }
.m-log b { font-weight: 500; color: var(--m-text); }
.m-kv { display: grid; grid-template-columns: 1fr auto; gap: 5px 12px; font-size: 11.5px; }
.m-kv dt { color: var(--m-dim); } .m-kv dd { font-family: var(--font-mono); text-align: right; }
.m-chips { display: flex; flex-wrap: wrap; gap: 5px; }
.m-chip { font-family: var(--font-mono); font-size: 10.5px; padding: 2px 7px; border-radius: 3px; border: 1px solid var(--m-line); color: var(--m-text); white-space: nowrap; }
.m-chip--em { border-color: rgba(16,185,129,0.45); color: var(--m-up); background: rgba(16,185,129,0.08); }
.m-chip--warn { border-color: rgba(217,119,6,0.5); color: #FBBF24; background: rgba(217,119,6,0.08); }
.m-meter { height: 4px; border-radius: 2px; background: rgba(255,255,255,0.08); overflow: hidden; margin-top: 6px; }
.m-meter i { display: block; height: 100%; background: var(--m-up); }
.m-meter i.w20 { width: 20%; } .m-meter i.w35 { width: 35%; } .m-meter i.w50 { width: 50%; } .m-meter i.w65 { width: 65%; } .m-meter i.w80 { width: 80%; }
.m-meter i.warn { background: #FBBF24; }
.m-table { font-size: 11px; font-family: var(--font-mono); }
.m-table th { text-align: left; font-family: var(--font-sans); font-weight: 500; color: var(--m-dim); padding: 0 8px 6px 0; font-size: 10.5px; white-space: nowrap; }
.m-table td { padding: 6px 8px 6px 0; border-top: 1px solid var(--m-line); white-space: nowrap; }
.m-table td:last-child, .m-table th:last-child { text-align: right; padding-right: 0; }
.m-side { background: var(--m-panel); padding: 12px 8px; font-size: 11.5px; }
.m-side div { padding: 7px 8px; border-radius: 4px; color: var(--m-dim); display: flex; justify-content: space-between; gap: 8px; }
.m-side .is-on { background: rgba(16,185,129,0.12); color: var(--m-text); }
.m-msg { padding: 10px 12px; border-radius: 6px; background: var(--m-panel); font-size: 12px; line-height: 1.55; }
.m-msg--user { background: rgba(16,185,129,0.10); border: 1px solid rgba(16,185,129,0.25); margin-left: 18%; }
.m-msg + .m-msg { margin-top: 8px; }
.m-h { font-size: 11px; font-weight: 600; color: var(--m-dim); margin: 10px 0 4px; }
.m-h:first-child { margin-top: 0; }
.m-msg ul { margin: 0; padding-left: 16px; }
.m-input { margin-top: 10px; padding: 9px 12px; border: 1px solid var(--m-line); border-radius: 6px; color: var(--m-dim); font-size: 11.5px; }
.m-mtf { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; }
.m-mtf div { border: 1px solid var(--m-line); border-radius: 4px; padding: 7px 8px; }
.m-mtf span { display: block; font-family: var(--font-mono); font-size: 10.5px; color: var(--m-dim); }
.m-mtf b { font-size: 11.5px; font-weight: 600; }
.mock-wrap { position: relative; }

/* chart primitives */
.ch-grid { stroke: rgba(255,255,255,0.06); stroke-width: 1; }
.ch-axis { fill: #7F97AA; font-family: var(--font-mono); font-size: 9px; }
.ch-up { fill: #10B981; stroke: #10B981; }
.ch-down { fill: #F87171; stroke: #F87171; }
.ch-wick { stroke-width: 1; }
.ch-ema { fill: none; stroke: #FBBF24; stroke-width: 1.25; opacity: 0.9; }
.ch-ema2 { fill: none; stroke: #7DD3FC; stroke-width: 1.25; opacity: 0.8; }
.ch-level { stroke: #A9BCCB; stroke-width: 1; stroke-dasharray: 3 4; opacity: 0.7; }
.ch-level--em { stroke: #10B981; opacity: 0.9; }
.ch-tag { fill: #0C2438; stroke: rgba(255,255,255,0.2); }
.ch-tag-text { fill: #E6EEF4; font-family: var(--font-mono); font-size: 9px; }
.ch-zone { fill: rgba(16,185,129,0.08); }
.ch-line { fill: none; stroke: #10B981; stroke-width: 1.5; stroke-linejoin: round; stroke-linecap: round; }
.ch-area { fill: rgba(16,185,129,0.10); }
.ch-marker { fill: #071827; stroke: #10B981; stroke-width: 1.5; }
.spark { fill: none; stroke-width: 1.4; stroke-linejoin: round; }
.spark--up { stroke: #10B981; } .spark--down { stroke: #F87171; }

/* --- Forms -------------------------------------------------------------- */
.form { display: grid; gap: var(--s-5); }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-5); }
.field { display: grid; gap: 6px; }
.field__label { font-size: var(--fs-small); font-weight: 600; }
.field__hint { font-size: var(--fs-micro); color: var(--text-2); }
.field input, .field select, .field textarea {
  width: 100%; min-height: 48px; padding: 11px 14px; background: var(--white); border: 1px solid #CBD5E1; border-radius: var(--r-control);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.field textarea { min-height: 150px; resize: vertical; line-height: 1.5; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--emerald-700); box-shadow: 0 0 0 3px rgba(4,120,87,0.18); }
.field.is-invalid input, .field.is-invalid select, .field.is-invalid textarea { border-color: var(--error); }
.field__error { font-size: var(--fs-micro); color: var(--error); min-height: 0; }
.field--check { grid-template-columns: 22px 1fr; align-items: start; gap: 4px 10px; }
.field--check input { width: 20px; height: 20px; min-height: 0; margin-top: 3px; accent-color: var(--emerald-700); }
.field--check .field__label { font-weight: 400; }
.field--check .field__error { grid-column: 2; }
.field--hp { position: absolute; left: -9999px; }
.form__status { padding: var(--s-4) var(--s-5); border-radius: var(--r-control); font-size: var(--fs-small); border: 1px solid var(--border); }
.form__status[data-kind="pending"] { background: #FFF7ED; border-color: #FED7AA; }
.form__status[data-kind="success"] { background: #ECFDF5; border-color: #A7F3D0; }
.form__status[data-kind="error"] { background: #FEF2F2; border-color: #FECACA; }

/* --- FAQ ---------------------------------------------------------------- */
.faq { border-top: 1px solid var(--border); }
.faq:last-of-type { border-bottom: 1px solid var(--border); }
.faq summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: var(--s-5); padding-block: var(--s-5); font-weight: 600; font-size: 1.0625rem; letter-spacing: -0.01em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; flex: none; width: 12px; height: 12px; margin-top: 8px; border-right: 2px solid var(--emerald-700); border-bottom: 2px solid var(--emerald-700); transform: rotate(45deg) translate(-3px, -3px); transition: transform 0.2s var(--ease); }
.faq[open] summary::after { transform: rotate(-135deg) translate(-3px, -3px); }
.faq__body { padding-bottom: var(--s-5); color: var(--text-2); max-width: 44rem; }
.faq__body > * + * { margin-top: 0.8em; }

/* --- Dialog (pending integrations) -------------------------------------- */
.dialog { width: min(480px, calc(100vw - 32px)); padding: 0; border: 0; border-radius: var(--r-panel); color: var(--text); box-shadow: var(--shadow-menu); }
.dialog::backdrop { background: rgba(7, 24, 39, 0.6); }
.dialog__inner { padding: var(--s-6); }
.dialog h2 { font-size: 1.375rem; letter-spacing: -0.02em; margin-top: var(--s-4); }
.dialog p { margin-top: var(--s-3); color: var(--text-2); font-size: var(--fs-small); }
.dialog .btn-row { margin-top: var(--s-5); }

/* --- Article list ------------------------------------------------------- */
.alist__row { display: grid; grid-template-columns: 180px minmax(0, 1fr) auto; gap: var(--s-3) var(--s-6); padding-block: var(--s-5); border-top: 1px solid var(--border); text-decoration: none; color: var(--text); align-items: baseline; }
.alist__row:last-child { border-bottom: 1px solid var(--border); }
.alist__row h3 { font-size: 1.25rem; letter-spacing: -0.02em; }
.alist__row:hover h3 { color: var(--emerald-700); }
.alist__row p { color: var(--text-2); font-size: var(--fs-small); margin-top: 4px; }
.alist__cat, .alist__meta { font-size: var(--fs-micro); color: var(--text-2); }
.topics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 var(--s-6); }
.topics li { padding-block: var(--s-4); border-top: 1px solid var(--border); display: flex; justify-content: space-between; gap: var(--s-4); align-items: baseline; }
.topics li span { font-size: var(--fs-micro); color: var(--text-2); white-space: nowrap; }
.article-meta { display: flex; flex-wrap: wrap; gap: var(--s-2) var(--s-5); margin-top: var(--s-5); font-size: var(--fs-small); color: var(--on-dark-2); }

/* --- Home hero ---------------------------------------------------------- */
.hero { background: var(--navy-900); color: var(--on-dark); position: relative; overflow: hidden; padding-block: clamp(3rem, 1.5rem + 6vw, 6.5rem) 0; }
.hero__grid { display: grid; grid-template-columns: minmax(0, 9fr) minmax(0, 11fr); gap: clamp(2rem, 4vw, 4rem); align-items: center; }
.hero__copy { padding-bottom: clamp(2rem, 4vw, 4rem); }
.hero h1 { font-size: var(--fs-display); line-height: 0.98; letter-spacing: -0.045em; }
.hero .lede { color: var(--on-dark-2); margin-top: var(--s-5); }
.hero .btn-row { margin-top: var(--s-6); }
.hero__note { margin-top: var(--s-5); font-size: var(--fs-micro); color: var(--on-dark-3); max-width: 34em; }
.hero__visual { align-self: center; position: relative; }
.hero__visual { padding-bottom: clamp(2rem, 4vw, 4rem); }
.hero__strip { border-top: 1px solid var(--line-dark); background: var(--navy-900); position: relative; }
.hero__strip ul { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.hero__strip li { padding: var(--s-5) var(--s-5) var(--s-5) 0; font-size: var(--fs-small); color: var(--on-dark-2); line-height: 1.5; }
.hero__strip li + li { padding-left: var(--s-5); border-left: 1px solid var(--line-dark); }
.hero__strip strong { display: block; color: var(--on-dark); font-weight: 600; }

/* --- Positioning statement ---------------------------------------------- */
.statement { font-size: clamp(1.5rem, 1.1rem + 2vw, 2.625rem); font-weight: 600; line-height: 1.2; letter-spacing: -0.03em; max-width: 24em; text-wrap: balance; }
.statement em { font-style: normal; color: var(--text-2); }
.not-list { margin-top: var(--s-7); display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-6) clamp(2rem, 5vw, 5rem); }
.not-list h3, .not-list .h3 { margin-bottom: var(--s-3); }
.not-list p { color: var(--text-2); }

/* --- Solutions index nav ------------------------------------------------- */
.jump { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 var(--s-6); counter-reset: jump; }
.jump a { counter-increment: jump; display: grid; grid-template-columns: 36px 1fr; padding-block: 14px; border-top: 1px solid var(--line-dark); color: var(--on-dark); text-decoration: none; font-weight: 500; }
.jump a::before { content: counter(jump, decimal-leading-zero); font-family: var(--font-mono); font-size: 0.8125rem; color: var(--emerald-500); padding-top: 3px; }
.jump a:hover { color: var(--emerald-500); }
.sol { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: var(--s-6) clamp(2rem, 5vw, 5rem); padding-block: var(--s-8); border-top: 1px solid var(--border); }
.sol__head .mono { color: var(--emerald-700); font-size: 0.875rem; display: block; margin-bottom: var(--s-3); }
.sol__head h2 { font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2.125rem); }
.sol__body .defs__item:first-child { border-top: 0; padding-top: 0; }

.m-meter + .m-kv { margin-top: 10px; }
.m-chips + .dim { margin-top: 8px; }
.dg-ring { fill: var(--dg-box); stroke: var(--dg-em); stroke-width: 1.5; }
.dg--globe .dg-faint { stroke: var(--dg-stroke); opacity: 0.55; }

/* --- Small layout helpers ------------------------------------------------ */
.gap { height: var(--s-7); }
.gap-s { height: var(--s-5); }
.h3 { font-size: var(--fs-h3); font-weight: 600; line-height: 1.3; letter-spacing: -0.012em; }
.hero-tags { margin-bottom: var(--s-5); }
.preview-pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-6); align-items: start; }
.sol__flow { font-size: 1.0625rem; margin: var(--s-5) 0 var(--s-4); }
.legal-links { display: flex; flex-wrap: wrap; gap: var(--s-2) var(--s-5); }
.rail--form { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.rail--form .rail__head { position: static; }
.rail--form .rail__head .defs { margin-top: var(--s-4); }
.rail--form .defs__item { padding-block: var(--s-3); }
.btn-row:not(:first-child) { margin-top: var(--s-5); }
.figure__canvas:focus-visible { outline-offset: 0; }