/* ============ Fonts (local, no external requests) ============ */
@font-face{font-family:"Century Expanded LT Std";src:url("../fonts/CenturyExpandedLTStd-Regular.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Roboto";src:url("../fonts/Roboto-Light.ttf") format("truetype");font-weight:300;font-display:swap}
@font-face{font-family:"Roboto";src:url("../fonts/Roboto-Regular.ttf") format("truetype");font-weight:400;font-display:swap}
@font-face{font-family:"Roboto";src:url("../fonts/Roboto-Medium.ttf") format("truetype");font-weight:500;font-display:swap}
@font-face{font-family:"Roboto";src:url("../fonts/Roboto-Bold.ttf") format("truetype");font-weight:700;font-display:swap}
@font-face{font-family:"Roboto Mono";src:url("../fonts/RobotoMono-Regular.ttf") format("truetype");font-weight:400;font-display:swap}
@font-face{font-family:"Roboto Mono";src:url("../fonts/RobotoMono-Medium.ttf") format("truetype");font-weight:500;font-display:swap}

/* ============ Tokens: house design system ============ */
:root{
  --white:#ffffff;
  --n-00:#e3eaf0; --n-100:#ebf5fd; --n-200:#cfe3f4; --n-300:#b3cfe3; --n-400:#94adbf;
  --n-500:#5e7ea0; --n-600:#3c5b7c; --n-700:#11274a; --n-800:#011735;
  --orange-300:#ff6a45; --orange-500:#ff3300; --orange-600:#cc2900;
  --green-400:#39d377; --green-500:#008753;
  --purple-300:#b266ff; --purple-500:#7f00ff;
  --bg:var(--n-800); --surface:var(--n-700);
  --text:var(--white); --text-mid:var(--n-200); --text-muted:var(--n-300);
  --font-display:"Century Expanded LT Std",Georgia,serif;
  --font-body:"Roboto",system-ui,sans-serif;
  --font-mono:"Roboto Mono",ui-monospace,monospace;
  --radius-card:20px; --radius-panel:16px; --radius-pill:calc(infinity*1px);
  --content:1401px; --gutter:24px; --section-y:96px;
  --ease:cubic-bezier(.4,0,.2,1);
  --ease-out:cubic-bezier(0,0,.2,1);
  --ease-spring:linear(0,0.009 0.9%,0.033 1.8%,0.129 3.8%,0.676 11.3%,0.89 14.9%,1.03 18.5%,1.075 20.4%,1.102 22.3%,1.115 24.7%,1.111 27.4%,1.016 39.7%,0.989 47.4%,1.001 71.7%,1);
  --shadow-float:rgba(0,0,0,0) 0 0 0 0,rgba(0,0,0,0) 0 0 0 0,rgba(0,0,0,.1) 0 10px 15px -3px,rgba(0,0,0,.1) 0 4px 6px -4px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;overflow-x:clip}
::selection{background:var(--orange-500);color:var(--white)}
:focus-visible{outline:2px solid var(--purple-300);outline-offset:2px;border-radius:4px}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
.container{width:min(var(--content),100% - var(--gutter)*2);margin-inline:auto}
section{padding:calc(var(--section-y)*.75) 0}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ============ Type ============ */
.display{font-family:var(--font-display);font-weight:400;line-height:1.08;letter-spacing:-.01em}
.display-xl{font-size:clamp(2.5rem,6.5vw,5.5rem)}
.display-l{font-size:clamp(2rem,4.5vw,3.75rem)}
.eyebrow{font-family:var(--font-mono);font-size:12px;font-weight:500;text-transform:uppercase;letter-spacing:.16em;color:var(--orange-500)}
.body-m{font-size:clamp(1rem,1.3vw,1.125rem);color:var(--text-mid)}

/* ============ Entrance (transform-only: content is always visible) ============ */
@media (prefers-reduced-motion:no-preference){
  .rise{animation:rise .7s var(--ease-out) var(--d,0s) both}
}
@keyframes rise{from{transform:translateY(16px)}to{transform:translateY(0)}}

/* ============ Nav ============ */
.nav-wrap{position:fixed;top:16px;left:0;right:0;z-index:50;display:flex;justify-content:center;pointer-events:none}
.nav{pointer-events:auto;display:flex;align-items:center;gap:clamp(16px,4vw,56px);min-height:64px;padding:8px 28px;border-radius:32px;background:color-mix(in srgb,var(--n-800),transparent 18%);border:1px solid color-mix(in srgb,var(--white),transparent 88%);box-shadow:var(--shadow-float);transition:background-color .3s var(--ease),border-color .3s var(--ease)}
.nav.solid{background:var(--n-800);border-color:color-mix(in srgb,var(--white),transparent 80%)}
.nav-icon{display:inline-flex;padding:8px;border-radius:var(--radius-pill);color:var(--n-300);transition:color .2s var(--ease)}
.nav-icon:hover{color:var(--white)}
.nav-brand{display:inline-flex;align-items:baseline;font-size:clamp(18px,2vw,24px);color:var(--white)}
.brand-glyphs{--g:18px;display:inline-flex;align-items:flex-end;gap:4px;transition:scale .3s var(--ease-spring)}
.nav-brand:hover .brand-glyphs{scale:1.06}
.glyph{height:var(--g,24px);width:var(--g,24px);display:inline-block}
.glyph.gm{width:calc(var(--g)*1.15);background:linear-gradient(160deg,var(--n-100),var(--n-300) 55%,var(--n-400));clip-path:polygon(0 100%,0 0,22% 0,50% 54%,78% 0,100% 0,100% 100%,78% 100%,78% 30%,57% 70%,43% 70%,22% 30%,22% 100%)}
.glyph.gi{width:calc(var(--g)*.36);border-radius:1px;background:linear-gradient(165deg,var(--white),var(--n-200) 70%)}
.glyph.gl{background:linear-gradient(200deg,var(--n-500),var(--n-700) 75%);clip-path:polygon(0 0,34% 0,34% 72%,100% 72%,100% 100%,0 100%)}
.glyph.ga{background:radial-gradient(circle at 38% 28%,var(--orange-500) 30%,var(--orange-600) 78%);clip-path:polygon(50% 0,100% 100%,72% 100%,50% 36%,28% 100%,0 100%)}
.glyph.gn{width:calc(var(--g)*1.05);background:linear-gradient(160deg,var(--n-300),var(--n-500) 60%,var(--n-600));clip-path:polygon(0 100%,0 0,26% 0,74% 62%,74% 0,100% 0,100% 100%,74% 100%,26% 38%,26% 100%)}
.nav-menu{font-weight:500;font-size:15px;color:var(--white);padding:8px 12px;border-radius:var(--radius-pill);transition:color .2s var(--ease)}
.nav-menu:hover{color:var(--n-300)}

/* ============ Menu overlay ============ */
#menu{position:fixed;inset:0;z-index:40;background:var(--n-800);display:flex;align-items:center;opacity:0;visibility:hidden;transition:opacity .45s var(--ease),visibility 0s .45s}
#menu.open{opacity:1;visibility:visible;transition:opacity .45s var(--ease)}
.menu-inner{width:min(var(--content),100% - var(--gutter)*2);margin-inline:auto;display:flex;flex-direction:column;gap:clamp(32px,6vh,56px)}
.menu-eyebrow{opacity:0}
#menu.open .menu-eyebrow{animation:entrance-fade .5s var(--ease) .08s both}
.menu-list{display:flex;flex-direction:column;gap:clamp(4px,1.5vh,16px)}
.menu-link{font-family:var(--font-display);font-size:clamp(2.25rem,6.5vw,5rem);line-height:1.12;width:fit-content;display:inline-flex;align-items:baseline;gap:clamp(12px,2vw,24px);color:var(--white);opacity:0;transition:color .3s var(--ease)}
#menu.open .menu-link{animation:entrance-slide-up .55s var(--ease-out) both}
#menu.open .menu-list li:nth-child(1) .menu-link{animation-delay:.12s}
#menu.open .menu-list li:nth-child(2) .menu-link{animation-delay:.19s}
#menu.open .menu-list li:nth-child(3) .menu-link{animation-delay:.26s}
#menu.open .menu-list li:nth-child(4) .menu-link{animation-delay:.33s}
#menu.open .menu-list li:nth-child(5) .menu-link{animation-delay:.40s}
#menu.open .menu-list li:nth-child(6) .menu-link{animation-delay:.47s}
.menu-link:hover{color:var(--n-300)}
.menu-link .num{font-family:var(--font-mono);font-size:clamp(11px,1vw,14px);letter-spacing:.12em;color:var(--n-500);transition:color .3s var(--ease)}
.menu-link:hover .num{color:var(--orange-500)}
.menu-foot{display:flex;flex-wrap:wrap;gap:24px;color:var(--n-400);font-size:14px;opacity:0}
#menu.open .menu-foot{animation:entrance-fade .5s var(--ease) .42s both}
.menu-foot a{transition:color .2s var(--ease)}
.menu-foot a:hover{color:var(--white)}
@keyframes entrance-slide-up{0%{opacity:0;transform:translateY(20px)}100%{opacity:1;transform:translateY(0)}}
@keyframes entrance-fade{0%{opacity:0}100%{opacity:1}}

/* ============ Buttons (label-duplication spring) ============ */
.btn{--dup:.8s;position:relative;display:inline-flex;align-items:center;justify-content:center;min-height:56px;border-radius:var(--radius-pill);overflow:hidden;font-size:14px;font-weight:500;line-height:1;cursor:pointer;width:fit-content;transition:color .3s var(--ease),background-color .3s var(--ease),border-color .3s var(--ease)}
.btn .flip{position:relative;min-width:0;flex:1;overflow:hidden}
.btn .flip>span{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:56px;padding:20px 32px;width:100%}
.btn .flip>span.dup{position:absolute;inset:0;transform:translateY(100%);pointer-events:none}
@media (prefers-reduced-motion:no-preference){
  .btn .flip>span{transition:transform var(--dup) var(--ease-spring)}
  .btn:hover .flip>span.base,.btn:focus-visible .flip>span.base{transform:translateY(-100%)}
  .btn:hover .flip>span.dup,.btn:focus-visible .flip>span.dup{transform:translateY(0)}
}
.btn-primary{background:var(--n-100);color:var(--n-800)}
.btn-primary:hover{background:var(--white)}
.btn-ghost{background:transparent;border:1px solid color-mix(in srgb,var(--white),transparent 65%);color:var(--white)}
.btn-ghost:hover{border-color:var(--white)}
.btn-sm,.btn-sm .flip>span{min-height:44px}
.btn-sm .flip>span{padding:12px 24px}

/* ============ Page head ============ */
.page-head{padding:180px 0 0}
.crumb{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--n-400);margin-bottom:32px;transition:color .2s var(--ease)}
.crumb:hover{color:var(--white)}
.crumb .arrow{color:var(--orange-500)}
.page-head .eyebrow{display:block;margin-bottom:20px}
.page-head h1{max-width:18ch}
.lead{max-width:62ch;margin-top:28px}
.meta-row{display:flex;flex-wrap:wrap;gap:12px 40px;margin-top:44px;font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--n-400);align-items:center}
.meta-row b{color:var(--n-200);font-weight:500}
.meta-row .live{color:var(--green-400)}
.head-cta{margin-top:36px;display:flex;gap:12px;flex-wrap:wrap}

.hero-stats{display:flex;flex-wrap:wrap;gap:24px clamp(32px,4.5vw,72px);margin-top:48px;align-items:flex-end}
.hstat{display:flex;flex-direction:column;gap:6px}
.hstat .k{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--n-400)}
.hstat .v{font-family:var(--font-display);font-size:clamp(1.875rem,3vw,2.75rem);line-height:1.1;font-variant-numeric:tabular-nums}
.hero-stats .src{flex-basis:100%}
.src{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--n-500)}

.hero-viz{margin-top:64px;border-radius:var(--radius-card);overflow-x:auto;background:var(--n-800);border:1px solid color-mix(in srgb,var(--white),transparent 90%)}
.hero-viz svg{width:100%;height:auto;display:block;min-width:820px}

/* ============ The decomposition SVG ============ */
.decomp .t-k{font-family:var(--font-mono);font-weight:500;font-size:15px;letter-spacing:2px;fill:#ebf5fd}
.decomp .t-val{font-family:var(--font-display);font-size:34px;letter-spacing:.01em;fill:#ffffff}
.decomp .t-meta{font-family:var(--font-mono);font-size:11px;letter-spacing:1px;fill:#94adbf}
.decomp .t-eq{font-family:var(--font-mono);font-size:40px;fill:#3c5b7c}
.decomp .t-sign{font-family:var(--font-mono);font-size:24px}
.decomp .t-long{fill:#cfe3f4}
.decomp .t-short{fill:#ff3300}
.decomp .t-name{font-family:var(--font-mono);font-weight:500;font-size:15px;letter-spacing:1.5px;fill:#ebf5fd}
.decomp .t-qty{font-family:var(--font-mono);font-size:15px;letter-spacing:1px;fill:#cfe3f4}
.decomp .t-sub{font-family:var(--font-mono);font-size:11px;letter-spacing:1px;fill:#94adbf}
.decomp .t-terms{font-family:var(--font-mono);font-size:11px;letter-spacing:1px;fill:#5e7ea0}
.decomp .t-tick{font-family:var(--font-mono);font-size:10px;fill:#5e7ea0}
.decomp .cap{font-family:var(--font-mono);font-size:12px;letter-spacing:2px;fill:#94adbf}

/* ============ Split + prose ============ */
.split{display:grid;gap:32px}
.split>*{min-width:0}
@media(min-width:960px){.split{grid-template-columns:5fr 7fr;gap:64px}}
.split h2{position:sticky;top:120px;height:fit-content}
.prose{display:flex;flex-direction:column;gap:20px}
.prose p{color:var(--text-mid);font-size:clamp(1rem,1.2vw,1.125rem);max-width:65ch}
.prose strong{color:var(--white);font-weight:500}
.mono-ref{font-family:var(--font-mono);font-size:.9em;color:var(--n-100)}
.mt-48{margin-top:48px}

/* ============ Section head ============ */
.dash-head{max-width:70ch;display:flex;flex-direction:column;gap:16px;margin-bottom:40px}

/* ============ Stat tiles (Tasks 16-17 render into these) ============ */
.stat-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.stat{background:var(--surface);border-radius:var(--radius-panel);padding:28px;display:flex;flex-direction:column;gap:8px}
.stat .k{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--n-400)}
.stat .v{font-family:var(--font-display);font-size:clamp(1.375rem,2vw,1.9rem);line-height:1.1;font-variant-numeric:tabular-nums;white-space:nowrap}
.stat .v.warn{color:var(--orange-500)}

/* ============ Tables (house style) ============ */
.tbl-wrap{overflow-x:auto;border-radius:var(--radius-panel);border:1px solid color-mix(in srgb,var(--white),transparent 88%)}
.tbl{width:100%;border-collapse:collapse;font-family:var(--font-mono);font-size:13px}
.tbl th{text-align:left;padding:16px 20px;color:var(--n-400);font-weight:500;letter-spacing:.1em;text-transform:uppercase;font-size:11px;border-bottom:1px solid color-mix(in srgb,var(--white),transparent 84%)}
.tbl td{padding:14px 20px;color:var(--n-200);border-bottom:1px solid color-mix(in srgb,var(--white),transparent 92%)}
.tbl tr:last-child td{border-bottom:0}

/* the termsheet table */
.terms{min-width:860px}
.terms th{color:var(--n-100);white-space:nowrap}
.terms td:first-child{color:var(--n-400);letter-spacing:.1em;text-transform:uppercase;font-size:11px;white-space:nowrap}
.terms td{vertical-align:top;line-height:1.6}
.terms .val td{color:var(--white);font-size:15px;white-space:nowrap}
.terms .val td:first-child{color:var(--n-400);font-size:11px}
.tbl-src{display:block;margin-top:24px}

/* ============ Panel mounts (Tasks 16-17 fill these; empty means invisible) ============ */
#payoff-panel:empty,#greeks-panel:empty,#events-panel:empty,#margin-panel:empty{display:none}
#payoff-panel,#greeks-panel,#events-panel,#margin-panel{margin-top:40px}

/* ============ Payoff & Greeks panels (Task 16) ============ */
.lw-panel{background:var(--surface);border:1px solid color-mix(in srgb,var(--white),transparent 90%);border-radius:var(--radius-panel);padding:clamp(24px,3.2vw,40px)}
.lw-k{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--n-400)}
.lw-src{display:block;margin-top:32px}

/* product selector: house segmented control, after Breakpoint's stress toggle */
.lw-control{display:flex;flex-wrap:wrap;gap:16px 24px;align-items:center}
.lw-seg{display:inline-flex;border:1px solid color-mix(in srgb,var(--white),transparent 84%);border-radius:12px;overflow:hidden}
.lw-opt{font-family:var(--font-mono);font-size:13px;font-weight:500;letter-spacing:.08em;line-height:1;padding:13px 22px;color:var(--n-400);transition:color .2s var(--ease),background-color .2s var(--ease)}
.lw-opt+.lw-opt{border-left:1px solid color-mix(in srgb,var(--white),transparent 84%)}
.lw-opt:hover{color:var(--n-100)}
.lw-opt[aria-pressed="true"]{color:var(--white);background:color-mix(in srgb,var(--white),transparent 92%)}
.lw-opt:focus-visible{outline-offset:-2px;border-radius:0}
.lw-desc{font-size:14px;color:var(--n-300)}
@media(min-width:1100px){.lw-desc{margin-left:auto;text-align:right;max-width:48ch}}
@media(max-width:560px){.lw-opt{padding:12px 13px;font-size:12px;letter-spacing:.05em}}

/* chart stage: tonal inset, same treatment for payoff and each greek */
.lw-stage{margin-top:28px;background:var(--n-800);border:1px solid color-mix(in srgb,var(--white),transparent 92%);border-radius:12px;padding:16px 16px 10px;overflow-x:auto}
.lw-stage svg{width:100%;height:auto;min-width:620px}
.lw-legend{display:flex;flex-wrap:wrap;gap:8px 28px;justify-content:flex-end;padding:4px 6px 12px}
.lw-lg{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--n-300)}
.lw-sw{width:22px;height:2px;border-radius:1px;background:var(--n-300)}
.lw-sw-val{background:var(--orange-500)}
.lw-chart .tick{font-family:var(--font-mono);font-size:12px;fill:var(--n-400)}

/* readouts + sliders */
.lw-board{display:grid;gap:28px 56px;margin-top:32px}
@media(min-width:900px){.lw-board{grid-template-columns:minmax(230px,300px) 1fr;align-items:center}}
.lw-ros{display:flex;flex-direction:column;gap:22px}
.lw-ro{display:flex;flex-direction:column;gap:8px}
.lw-ro-v{font-family:var(--font-display);font-size:clamp(1.6rem,2.4vw,2.25rem);line-height:1.1;font-variant-numeric:tabular-nums;color:var(--white)}
.lw-ro-sub{font-size:clamp(1.15rem,1.6vw,1.4rem);color:var(--n-200)}
.lw-sliders{display:flex;flex-direction:column;gap:22px}
.lw-slider{display:flex;flex-direction:column;gap:10px}
.lw-sl-head{display:flex;justify-content:space-between;align-items:baseline;gap:16px}
.lw-sl-val{font-family:var(--font-mono);font-size:13px;color:var(--n-100);font-variant-numeric:tabular-nums}

/* native range, restyled to the house look; thumb centered on a 4px track */
.lw-range{-webkit-appearance:none;appearance:none;width:100%;height:18px;margin:0;background:transparent;cursor:pointer;--p:50%}
.lw-range::-webkit-slider-runnable-track{height:4px;border-radius:2px;background:linear-gradient(to right,var(--n-200) var(--p),color-mix(in srgb,var(--white),transparent 88%) var(--p))}
.lw-range::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;margin-top:-6px;border-radius:50%;background:var(--white);border:0}
.lw-range::-moz-range-track{height:4px;border-radius:2px;background:color-mix(in srgb,var(--white),transparent 88%)}
.lw-range::-moz-range-progress{height:4px;border-radius:2px;background:var(--n-200)}
.lw-range::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--white);border:0}

/* autocall probability strip */
.lw-dist{margin-top:36px;padding-top:28px;border-top:1px solid color-mix(in srgb,var(--white),transparent 88%)}
.lw-dnote{font-size:14px;color:var(--n-300);margin-top:10px;max-width:62ch}
.lw-dist-scroll{overflow-x:auto;margin-top:24px}
.lw-dist-row{display:grid;grid-template-columns:repeat(13,1fr);gap:10px;min-width:620px}
.lw-dcol{display:flex;flex-direction:column;align-items:center;gap:8px;min-width:0}
.lw-dv{font-family:var(--font-mono);font-size:11px;color:var(--n-100);font-variant-numeric:tabular-nums}
.lw-dtrack{display:flex;align-items:flex-end;width:14px;height:76px;border-radius:7px;background:color-mix(in srgb,var(--white),transparent 92%);overflow:hidden}
.lw-dfill{display:block;width:100%;border-radius:7px;background:var(--n-300)}
.lw-dd{font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;color:var(--n-400);text-align:center;line-height:1.5;text-transform:uppercase}
.lw-dnone .lw-dfill{background:var(--n-100)}
.lw-dnone .lw-dd,.lw-dnone .lw-dv{color:var(--n-100)}

/* greeks: four small multiples, one visual language */
.lw-gctx{display:flex;flex-wrap:wrap;gap:12px 24px;align-items:baseline}
.lw-gnote{font-size:14px;color:var(--n-300)}
@media(min-width:900px){.lw-gnote{margin-left:auto}}
.lw-ggrid{display:grid;gap:16px;margin-top:28px;grid-template-columns:repeat(4,1fr)}
@media(max-width:1120px){.lw-ggrid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.lw-ggrid{grid-template-columns:1fr}}
.lw-gcell{background:var(--n-800);border:1px solid color-mix(in srgb,var(--white),transparent 92%);border-radius:12px;padding:16px 16px 8px;margin:0}
.lw-ghead{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:2px 4px 10px}
.lw-gname{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--n-400)}
.lw-gval{font-family:var(--font-mono);font-size:14px;color:var(--n-100);font-variant-numeric:tabular-nums}
.lw-gcell svg{width:100%;height:auto}
.lw-gcell .tick{font-family:var(--font-mono);font-size:10px;fill:var(--n-400)}

/* ============ Events timeline + corporate action (Task 17) ============ */
.lw-timeline{margin-top:32px}
.lw-node{position:relative;display:grid;grid-template-columns:104px 20px 1fr;grid-template-areas:"date dot body";gap:0 20px;padding:16px 0}
.lw-node::before{content:"";position:absolute;left:133px;top:26px;bottom:-26px;width:2px;border-radius:1px;background:color-mix(in srgb,var(--white),transparent 88%)}
.lw-node:last-child::before{display:none}
.lw-ev-date{grid-area:date;font-family:var(--font-mono);font-size:13px;line-height:1.35;color:var(--n-100);font-variant-numeric:tabular-nums;padding-top:2px}
.lw-ev-date .thru{display:block;font-size:11px;color:var(--n-500);margin-top:4px}
.lw-nodedot{grid-area:dot;justify-self:center;width:10px;height:10px;margin-top:5px;border-radius:50%;background:var(--n-200);box-shadow:0 0 0 4px var(--surface)}
.lw-ev-body{grid-area:body;min-width:0;display:flex;flex-direction:column;gap:14px}
.lw-ev{display:flex;flex-direction:column;gap:4px}
.lw-ev-type{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--n-400)}
.lw-ev-desc{font-size:14px;line-height:1.55;color:var(--n-200);max-width:72ch}
.lw-ev-dep{font-size:13px;line-height:1.5;color:var(--n-500);max-width:72ch}
.lw-ev-cycle{font-size:14px;color:var(--n-300)}
.lw-sched{margin-top:6px;display:flex;flex-direction:column;gap:12px}
.lw-sched-h{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--n-500)}
.lw-sched-grid{display:grid;gap:8px 28px;grid-template-columns:repeat(auto-fill,minmax(218px,1fr));max-width:1000px}
.lw-pair{font-family:var(--font-mono);font-size:13px;color:var(--n-200);font-variant-numeric:tabular-nums;white-space:nowrap}
.lw-pair .to{color:var(--n-500);padding:0 8px}
@media(max-width:640px){
  .lw-node{grid-template-columns:14px 1fr;grid-template-areas:"dot date" "gap body";gap:0 16px}
  .lw-node::before{left:6px}
  .lw-ev-body{margin-top:8px}
  .lw-ev-date{padding-top:0}
  .lw-nodedot{margin-top:3px}
}
.lw-ca{margin-top:44px;padding-top:36px;border-top:1px solid color-mix(in srgb,var(--white),transparent 88%);display:flex;flex-direction:column;gap:12px}
.lw-ca-name{font-family:var(--font-display);font-weight:400;font-size:clamp(1.3rem,1.9vw,1.7rem);line-height:1.15}
.lw-ca-note{font-size:14px;line-height:1.55;color:var(--n-300);max-width:66ch;margin-bottom:10px}
.lw-catbl th.num,.lw-catbl td.num{text-align:right;width:1%}
.lw-catbl td.num{color:var(--n-100);font-variant-numeric:tabular-nums;white-space:nowrap}
.lw-catbl td.fld{text-transform:uppercase;letter-spacing:.08em;font-size:11px;color:var(--n-400);white-space:nowrap;width:18%}
.lw-catbl td.arr{color:var(--n-500);padding-inline:4px;width:1%}

/* ============ Margin panel (Task 17) ============ */
.lw-mtop{display:grid;gap:28px;margin-top:32px}
@media(min-width:1000px){.lw-mtop{grid-template-columns:minmax(220px,280px) 1fr;gap:48px;align-items:center}}
.lw-im{display:flex;flex-direction:column;gap:10px}
.lw-im-v{font-family:var(--font-display);font-size:clamp(1.8rem,2.6vw,2.5rem);line-height:1.1;font-variant-numeric:tabular-nums;white-space:nowrap}
.lw-im-sub{font-size:14px;line-height:1.55;color:var(--n-300);max-width:40ch}
.lw-imtbl th,.lw-imtbl td{padding:11px 14px}
.lw-imtbl th.corner{vertical-align:bottom;white-space:nowrap}
.lw-imtbl th.over{text-align:center;letter-spacing:.14em;color:var(--n-500);border-bottom:0;padding-bottom:4px}
.lw-imtbl th.num,.lw-imtbl td.num{text-align:right}
.lw-imtbl td.num{color:var(--n-200);font-variant-numeric:tabular-nums;white-space:nowrap}
.lw-imtbl tbody th{color:var(--n-400);font-weight:500;letter-spacing:.08em;text-transform:uppercase;font-size:11px;white-space:nowrap;border-bottom:1px solid color-mix(in srgb,var(--white),transparent 92%)}
.lw-imtbl tr:last-child th{border-bottom:0}
.lw-imtbl td.lw-worst{box-shadow:inset 0 0 0 2px var(--orange-500);color:var(--white)}
.lw-vm{margin-top:40px;padding-top:32px;border-top:1px solid color-mix(in srgb,var(--white),transparent 88%)}
.lw-vm-head{display:flex;flex-wrap:wrap;gap:10px 24px;align-items:baseline;margin-bottom:20px}
.lw-vm-note{font-size:14px;color:var(--n-300)}
@media(min-width:1000px){.lw-vm-note{margin-left:auto;text-align:right;max-width:56ch}}
.lw-vm .lw-stage{margin-top:0}
.lw-mchart .tick{font-family:var(--font-mono);font-size:12px;fill:var(--n-400)}
.lw-mchart .tick.thr{font-size:10px;letter-spacing:.1em;fill:var(--n-500)}
.lw-mchart .tick.call{font-size:12px;letter-spacing:.06em;fill:var(--n-100)}
.lw-sw-thr{height:0;background:none;border-top:2px dashed var(--n-500);border-radius:0}
.lw-mstats{display:grid;gap:20px 40px;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));margin-top:28px}
.lw-mstat{display:flex;flex-direction:column;gap:7px}
.lw-mstat .v{font-family:var(--font-mono);font-size:15px;line-height:1.5;color:var(--n-100);font-variant-numeric:tabular-nums}
.lw-mstat .nb{white-space:nowrap}

/* ============ Proof ============ */
.proof-block{background:var(--surface);border:1px solid color-mix(in srgb,var(--white),transparent 90%);border-radius:var(--radius-panel);padding:24px 28px;overflow-x:auto}
.proof-block pre{font-family:var(--font-mono);font-size:13px;line-height:1.7;color:var(--n-200);white-space:pre}
.proof-block .cmd{color:var(--n-500)}
.proof-block .pass{color:var(--green-400)}
.proof-block .dim{color:var(--n-500)}
.proof-cta{margin-top:28px}

/* ============ Footer ============ */
footer{padding:calc(var(--section-y)*.5) 0 48px}
.foot-bottom{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center;color:var(--n-400);font-size:13px}
.foot-bottom a{transition:color .2s var(--ease)}
.foot-bottom a:hover{color:var(--white)}

/* ============ Search overlay ============ */
#search-btn .ic-close{display:none}
#search-btn.open .ic-search{display:none}
#search-btn.open .ic-close{display:block}
#search{position:fixed;inset:0;z-index:44;background:var(--n-800);opacity:0;visibility:hidden;transition:opacity .45s var(--ease),visibility 0s .45s}
#search.open{opacity:1;visibility:visible;transition:opacity .45s var(--ease)}
.search-inner{width:min(var(--content),100% - var(--gutter)*2);margin-inline:auto;height:100%;display:flex;flex-direction:column;gap:clamp(20px,3.5vh,32px);padding-top:clamp(100px,16vh,150px);padding-bottom:32px}
.search-eyebrow{opacity:0}
#search.open .search-eyebrow{animation:entrance-fade .5s var(--ease) .08s both}
#search-input{width:100%;background:none;border:0;border-bottom:1px solid var(--n-500);font-family:var(--font-display);font-size:clamp(1.6rem,4.5vw,2.75rem);line-height:1.2;color:var(--white);padding:0 0 14px;border-radius:0;caret-color:var(--orange-500);opacity:0}
#search.open #search-input{animation:entrance-slide-up .55s var(--ease-out) .12s both}
#search-input:focus{outline:none;border-bottom-color:var(--white)}
#search-input::placeholder{color:var(--n-500)}
#search-input::-webkit-search-cancel-button{-webkit-appearance:none}
#search-label{opacity:0}
#search.open #search-label{animation:entrance-fade .5s var(--ease) .2s both}
.search-results{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;overflow-y:auto;min-height:0}
#search.open .search-results{animation:entrance-fade .5s var(--ease) .26s both}
.sr-link{display:flex;flex-direction:column;gap:4px;padding:14px 0;border-bottom:1px solid color-mix(in srgb,var(--white),transparent 88%)}
.sr-title{font-family:var(--font-display);font-size:clamp(1.2rem,2.6vw,1.6rem);color:var(--white);display:inline-flex;align-items:baseline;gap:12px;transition:color .3s var(--ease)}
.sr-title .sr-num{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--n-500);transition:color .3s var(--ease)}
.sr-link:hover .sr-title{color:var(--n-300)}
.sr-link:hover .sr-num{color:var(--orange-500)}
.sr-desc{font-size:14px;color:var(--n-400);line-height:1.5}

/* ============ Reduced motion ============ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-delay:0s!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
}