/* Sponsor features: the same night-time photographic language as the kit stories. */
.sp { --sp-blue:#a9c3ff; --sp-line:rgba(190,209,243,.18); background:#080f17; color:#edf2f6; }
.sp :is(h1,h2,h3,p,figure,dl,dd) { margin:0; }
.sp a { color:inherit; }
.sp :is(a,button):focus-visible { outline:2px solid var(--sp-blue); outline-offset:5px; }
.sp :is(h2,li[id],section[id]) { scroll-margin-top:100px; }
.sp-kicker { color:#a3b6d3; font-size:10px; font-weight:600; line-height:1.6; letter-spacing:.15em; text-transform:uppercase; }
.sp-glass { display:inline-flex; align-items:center; gap:30px; padding:13px 18px; border:1px solid rgba(233,241,255,.3); background:rgba(10,21,41,.42); backdrop-filter:blur(18px); -webkit-backdrop-filter:blur(18px); color:#edf2f6; font-size:11px; line-height:1.5; }
.sp-cover { position:relative; isolation:isolate; min-height:660px; height:calc(100svh - 174px); max-height:880px; overflow:hidden; background:#080f17; }
.sp-cover__photo { position:absolute; inset:0 0 0 36%; z-index:-2; overflow:hidden; background:#0b1b38; }
/* Keep the full-resolution photo: this is a close reading of the print, not a thumbnail. */
.sp-cover__photo img { position:absolute; width:clamp(2000px,195vw,2800px); max-width:none; height:auto; left:53%; top:45%; transform:translate(-60%,-61%); }
.sp-cover::after { position:absolute; inset:0; z-index:-1; content:''; pointer-events:none; background:linear-gradient(90deg,#080f17 32%,rgba(8,15,23,.88) 37%,rgba(8,15,23,.1) 50%,transparent 64%),linear-gradient(0deg,rgba(8,15,23,.94),transparent 25%,transparent 78%,rgba(8,15,23,.75)); }
.sp-cover__top { position:absolute; top:28px; inset-inline:clamp(20px,4.5vw,72px); display:flex; align-items:center; justify-content:space-between; gap:16px; }
.sp-cover__top .sp-kicker { color:#e1e9f7; }
.sp-cover__copy { position:absolute; left:clamp(20px,4.5vw,72px); top:27%; width:30%; }
.sp-cover h1 { margin:19px 0 32px; font-size:clamp(76px,8.7vw,134px); letter-spacing:-.08em; line-height:.88; font-weight:500; }
.sp-cover__tagline { max-width:290px; font-size:clamp(23px,2.5vw,37px); line-height:1.17; letter-spacing:-.045em; text-wrap:balance; color:#cbd9e9; }
.sp-cover__read { display:flex; align-items:center; justify-content:space-between; gap:25px; max-width:245px; min-height:48px; margin-top:34px; border-bottom:1px solid #617890; font-size:11px; }
.sp-cover__read span { font-size:23px; }
.sp-cover__period { position:absolute; bottom:40px; left:clamp(20px,4.5vw,72px); }
.sp-cover__period > span { font-size:24px; letter-spacing:-.05em; font-weight:350; }
.sp-cover__period p { margin-top:8px; color:#8ba1b9; font-size:10px; }
.sp-cover__detail { position:absolute; left:52%; bottom:48px; display:flex; align-items:center; gap:12px; color:#bbd0e7; font-size:9px; letter-spacing:.12em; }
.sp-cover__detail span { width:40px; height:1px; background:#8caac8; }
.sp-cover__expand { position:absolute; bottom:38px; right:clamp(20px,4.5vw,72px); }
.sp-cover-caption { display:flex; justify-content:space-between; gap:20px; padding:20px clamp(20px,4.5vw,72px) 28px; font-size:10px; color:#92a8c0; line-height:1.7; }
.sp-cover-caption a { flex-shrink:0; text-underline-offset:4px; text-decoration:underline; }
.sp-nav { position:sticky; top:12px; z-index:10; display:flex; justify-content:space-between; align-items:center; gap:30px; min-height:70px; max-width:1320px; margin:0 auto; padding:12px 28px; border:1px solid var(--sp-line); background:rgba(13,24,39,.84); box-shadow:0 16px 40px rgba(0,0,0,.18); backdrop-filter:blur(24px); -webkit-backdrop-filter:blur(24px); }
.sp-nav__brand { display:flex; align-items:baseline; gap:15px; font-size:22px; font-weight:650; letter-spacing:-.06em; }
.sp-nav__brand span { font-size:9px; letter-spacing:.1em; font-weight:400; color:#92a8c0; }
.sp-nav > div { display:flex; flex-wrap:wrap; column-gap:24px; }
.sp-nav > div a { display:flex; align-items:center; gap:8px; min-height:44px; font-size:11px; }
.sp-nav small { color:#6d8bb9; font-size:9px; }
.sp-nav a:hover { color:#b0ccff; }
.sp--editorial .sp-nav__brand { flex-shrink:0; }
.sp--editorial .sp-nav > div { min-width:0; overflow-x:auto; flex-wrap:nowrap; justify-content:flex-start; scrollbar-width:thin; padding:4px; }
.sp--editorial .sp-nav > div a { flex-shrink:0; white-space:nowrap; }
.sp--editorial .sp-prose h3 { margin:38px 0 18px; font-size:25px; line-height:1.3; letter-spacing:-.025em; scroll-margin-top:110px; }
.sp--editorial .sp-prose { overflow-wrap:break-word; }
.sp-intro { max-width:1200px; padding:92px 40px; margin:auto; display:grid; grid-template-columns:190px 1fr; gap:34px 65px; }
.sp-intro > .sp-kicker { padding-top:10px; }
.sp-intro__lead { max-width:830px; font-size:clamp(25px,3.1vw,44px); line-height:1.35; letter-spacing:-.04em; text-wrap:pretty; }
.sp-intro dl { grid-column:2; display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin-top:26px; }
.sp-intro dl > div { padding-top:20px; border-top:1px solid var(--sp-line); }
.sp-intro dt { margin-bottom:10px; color:#8ea5bf; font-size:10px; }
.sp-intro dd { color:#dce8fa; font-size:18px; font-weight:500; letter-spacing:-.03em; }
.sp-intro--detailed dl { grid-template-columns:repeat(2,minmax(0,1fr)); }
.sp-intro--detailed dd { font-size:16px; line-height:1.6; overflow-wrap:break-word; }
.sp-chapter { border-top:1px solid var(--sp-line); padding:88px 0; }
.sp-chapter__grid { display:grid; grid-template-columns:190px 1fr; gap:65px; max-width:1200px; margin:auto; padding:0 40px; }
.sp-rail { position:relative; align-self:stretch; padding-left:24px; border-left:1px solid #2b4058; color:#91a7c4; }
.sp-rail::before { content:''; position:absolute; left:-4px; top:4px; width:7px; height:7px; border-radius:50%; background:#a9c3ff; box-shadow:0 0 0 6px #111d2c; }
.sp-rail__number { display:block; margin-bottom:38px; color:#8ba4c3; font-size:11px; line-height:1.6; letter-spacing:.14em; }
.sp-rail strong { display:block; max-width:150px; color:#d0dded; font-size:20px; font-weight:400; letter-spacing:-.04em; line-height:1.4; }
.sp-rail p { margin-top:12px; max-width:135px; font-size:11px; line-height:1.9; }
.sp-chapter__body { max-width:720px; min-width:0; }
.sp-chapter h2 { margin:20px 0 32px; font-size:clamp(34px,4vw,57px); line-height:1.06; font-weight:500; letter-spacing:-.055em; text-wrap:balance; }
.sp-prose { max-width:660px; font-size:17px; line-height:1.85; color:#b8c7d7; }
.sp-prose p + p { margin-top:24px; }
.sp-prose strong { font-weight:500; color:#e2edfb; }
.sp-prose a { display:inline-block; min-width:28px; color:#a9c3ff; text-align:center; text-decoration:underline; text-underline-offset:4px; }
.sp-chapter--pause { background:#101a28; }
.sp-chapter--pause .sp-rail__number { color:#b9c5d9; }
.sp-photo { padding-inline:40px; margin:65px auto 0!important; max-width:1200px; }
.sp-photo > a { display:block; position:relative; background:#070b10; }
.sp-photo img { display:block; width:100%; height:auto; }
.sp-photo .sp-glass { position:absolute; bottom:18px; right:18px; }
.sp-photo figcaption { display:flex; justify-content:space-between; gap:24px; padding-top:14px; font-size:10px; line-height:1.8; color:#92a8c0; }
.sp-photo figcaption a { flex-shrink:0; text-decoration:underline; text-underline-offset:4px; }
.sp-kits { padding:70px clamp(20px,4.5vw,72px) 90px; background:#0d1929; border-block:1px solid var(--sp-line); }
.sp-section-head { position:relative; max-width:1320px; margin:0 auto 36px; }
.sp-section-head h2 { margin-top:16px; max-width:850px; font-size:clamp(31px,4vw,56px); font-weight:500; letter-spacing:-.05em; line-height:1.1; }
.sp-section-head > span { position:absolute; bottom:5px; right:0; color:#92a8c0; font-size:10px; letter-spacing:.1em; }
.sp-kit-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:1px; max-width:1320px; margin:auto; background:var(--sp-line); border:1px solid var(--sp-line); }
.sp-kit { padding:18px; background:#0d1929; }
.sp-kit { min-width:0; }
.sp-kit__photo { position:relative; aspect-ratio:1; background:#172233; overflow:hidden; }
.sp-kit__photo::after { content:''; position:absolute; inset:0; background:linear-gradient(0deg,rgba(3,11,23,.72),transparent 50%); pointer-events:none; }
.sp-kit__photo img { width:100%; height:100%; object-fit:cover; object-position:55% center; }
.sp-kit:first-child .sp-kit__photo img { object-position:54% center; }
.sp-kit__year { position:absolute; left:20px; bottom:20px; z-index:1; font-size:clamp(32px,4vw,60px); font-weight:400; letter-spacing:-.075em; }
.sp-kit__arrow { position:absolute; top:16px; right:16px; z-index:1; font-size:20px; padding:8px 14px; }
.sp-kit__copy { padding:22px 0 0; }
.sp-kit h3 { margin:8px 0 12px; font-size:24px; font-weight:500; letter-spacing:-.04em; }
.sp-kit__copy > p:not(.sp-kicker) { max-width:350px; font-size:13px; line-height:1.75; color:#9fb1c8; }
.sp-kit__link { display:inline-flex; align-items:center; min-height:44px; margin-top:12px; border-bottom:1px solid #607a9b; font-size:11px; }
.sp-kit:hover .sp-kit__link { color:#dce9ff; border-color:#dce9ff; }
.sp-sources { max-width:1200px; margin:auto; padding:70px 40px 90px; border-top:1px solid var(--sp-line); }
.sp-sources h2 { font-size:clamp(30px,3.6vw,48px); letter-spacing:-.05em; font-weight:500; margin:16px 0 32px; }
.sp-sources ol { padding:0; list-style:none; display:grid; grid-template-columns:1fr 1fr; gap:0 50px; }
.sp-sources li { padding:18px 0; border-bottom:1px solid var(--sp-line); font-size:12px; line-height:1.6; min-width:0; }
.sp-sources small { display:block; color:#8198b3; font-size:10px; margin-top:8px; }
.sp-sources > p:last-child { margin-top:30px; color:#8ca2bd; font-size:11px; }
.sp-next { display:grid; grid-template-columns:1fr 1fr; border-top:1px solid var(--sp-line); background:#101c2c; }
.sp-next > a { padding:42px clamp(24px,4.5vw,72px); }
.sp-next > a + a { border-left:1px solid var(--sp-line); }
.sp-next small { display:block; margin-bottom:16px; color:#8ca2bd; font-size:11px; }
.sp-next strong { display:flex; justify-content:space-between; gap:20px; font-size:clamp(21px,2.4vw,34px); font-weight:400; letter-spacing:-.04em; }
.sp--custom .sp-cover__photo img { width:var(--sp-cover-width); transform:translate(calc(-1 * var(--sp-cover-x)),calc(-1 * var(--sp-cover-y))); }
.sp--custom .sp-cover__photo { background:#080f17; }
.sp--custom .sp-cover__photo img { mask-image:linear-gradient(180deg,#000 90%,transparent); }
.sp--custom .sp-cover h1 { font-size:clamp(40px,5.6vw,90px); line-height:.98; letter-spacing:-.065em; overflow-wrap:normal; }
.sp--custom .sp-cover__copy { top:25%; }
.sp-kit-grid--1 { max-width:900px; grid-template-columns:1fr; }
.sp-kit-grid--1 .sp-kit { display:grid; grid-template-columns:1fr 1fr; gap:28px; align-items:center; }
.sp-kit-grid--1 .sp-kit__copy { padding:0 18px 0 0; }
.sp-kit-grid--2 { grid-template-columns:repeat(2,minmax(0,1fr)); }
.sp-more-kits { max-width:1320px; margin:40px auto 0; }
.sp-more-kits > div { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:0 32px; margin-top:18px; }
.sp-more-kits a { display:flex; align-items:center; gap:14px; min-height:76px; border-bottom:1px solid var(--sp-line); }
.sp-more-kits a > span:first-child { font-size:24px; font-weight:350; letter-spacing:-.05em; }
.sp-more-kits a > span:nth-child(2) { margin-left:auto; font-size:10px; color:#8ea5bf; }
.sp-more-kits a:hover { color:var(--sp-blue); }
.sp-index { padding-bottom:100px; }
.sp-index__intro { max-width:1320px; margin:auto; padding:75px 40px 70px; }
.sp-index__intro h1 { margin:30px 0 44px; font-size:clamp(58px,7.5vw,108px); font-weight:500; line-height:1.02; letter-spacing:-.065em; }
.sp-index__intro h1 em { color:var(--sp-blue); font-style:normal; }
.sp-index__intro > div { display:flex; justify-content:space-between; align-items:flex-end; gap:40px; }
.sp-index__intro > div > p { max-width:480px; color:#a7bad0; font-size:18px; line-height:1.65; }
.sp-index__intro nav { display:flex; flex-wrap:wrap; gap:12px; }
.sp-index__intro nav a { padding:16px 20px; border:1px solid var(--sp-line); background:rgba(26,43,68,.65); font-size:12px; }
.sp-index__intro nav span { margin:0 20px; color:#a9c3ff; }
.sp-index__section { max-width:1320px; margin:0 auto; padding:52px 40px 35px; scroll-margin-top:24px!important; }
.sp-index__heading { display:flex; align-items:baseline; justify-content:space-between; gap:25px; padding-top:30px; border-top:1px solid var(--sp-line); margin-bottom:28px; }
.sp-index__heading h2 { font-size:42px; font-weight:400; letter-spacing:-.045em; }
.sp-index__heading p { font-size:13px; color:#90a8c5; }
.sp-index__grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:38px 26px; }
.sp-index-card { min-width:0; }
.sp-index-card__photo { position:relative; aspect-ratio:4/3; overflow:hidden; background:#0c1929; }
.sp-index-card__photo img { width:100%; height:100%; object-fit:cover; }
.sp-index-card__photo::after { position:absolute; content:''; inset:0; pointer-events:none; background:linear-gradient(0deg,rgba(8,15,23,.35),transparent 50%); }
.sp-index-card__photo .sp-glass { position:absolute; z-index:1; bottom:14px; right:14px; padding:7px 13px; font-size:20px; }
.sp-index-card__copy { padding:22px 0 25px; border-bottom:1px solid var(--sp-line); }
.sp-index-card h3 { margin:9px 0 12px; font-size:32px; letter-spacing:-.045em; font-weight:450; }
.sp-index-card__copy > p:last-child { color:#9eafc3; font-size:14px; line-height:1.6; }
.sp-index-card:hover h3 { color:var(--sp-blue); }
@media (max-width:1000px) {
  .sp-index__grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .sp-index__intro > div { align-items:flex-start; flex-direction:column; gap:28px; }
  .sp-index__intro, .sp-index__section { padding-inline:28px; }
  .sp-index__heading { align-items:flex-start; flex-direction:column; gap:12px; }
  .sp-more-kits > div { grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media (max-width:1000px) {
  .sp-cover { min-height:620px; }
  .sp-cover__copy { width:33%; top:25%; }
  .sp-cover h1 { font-size:82px; }
  .sp-cover__tagline { font-size:28px; }
  .sp-cover__detail { left:48%; bottom:105px; }
  .sp-nav__brand { display:none; }
  .sp-nav { justify-content:center; }
  .sp-nav > div { justify-content:center; column-gap:22px; }
  .sp-intro, .sp-chapter__grid { grid-template-columns:130px 1fr; gap:30px; padding-inline:28px; }
  .sp-intro dd { font-size:15px; }
  .sp-section-head > span { display:none; }
  .sp-kit { padding:12px; }
  .sp-kit h3 { font-size:21px; }
  .sp-kit__year { left:12px; bottom:16px; }
  .sp-photo { padding-inline:28px; }
}
@media (max-width:640px) {
  .sp-cover { min-height:720px; height:auto; max-height:none; }
  .sp-cover__photo { inset:240px 0 55px; }
  .sp-cover__photo img { width:2100px; left:50%; top:49%; transform:translate(-60%,-61%); }
  .sp-cover::after { background:linear-gradient(180deg,#080f17 30%,transparent 43%,transparent 76%,#080f17 96%); }
  .sp-cover__top { top:18px; align-items:center; }
  .sp-cover__top .sp-kicker { font-size:8px; letter-spacing:.09em; }
  .sp-cover__copy { top:68px; width:calc(100% - 40px); }
  .sp-cover__copy > .sp-kicker { font-size:9px; }
  .sp-cover h1 { margin:14px 0 16px; font-size:76px; }
  .sp-cover__tagline { max-width:310px; font-size:25px; text-wrap:initial; }
  .sp-cover__read { position:absolute; top:594px; left:0; margin:0; width:calc(100vw - 40px); max-width:none; }
  .sp-cover__period { display:none; }
  .sp-cover__detail { left:20px; bottom:110px; font-size:8px; gap:8px; }
  .sp-cover__detail span { width:20px; }
  .sp-cover__expand { right:20px; bottom:99px; padding:9px 12px; font-size:10px; }
  .sp-cover-caption { flex-direction:column; gap:6px; padding:8px 20px 22px; }
  .sp-nav { top:0; padding:6px 12px; min-height:60px; border-inline:0; }
  .sp-nav > div { gap:0 17px; }
  .sp-nav > div a { font-size:10px; min-height:34px; }
  .sp-nav small { display:none; }
  .sp :is(h2,li[id],section[id]) { scroll-margin-top:100px; }
  .sp-intro { display:block; padding:52px 22px; }
  .sp-intro__lead { margin-top:22px!important; font-size:28px; }
  .sp-intro dl { margin-top:34px; gap:14px; }
  .sp-intro dt { font-size:9px; line-height:1.5; }
  .sp-intro dd { font-size:13px; }
  .sp-intro--detailed dl { grid-template-columns:1fr; gap:18px; }
  .sp-intro--detailed dt { font-size:11px; }
  .sp-intro--detailed dd { font-size:16px; }
  .sp-chapter { padding:50px 0; }
  .sp-chapter__grid { display:block; padding:0 22px; }
  .sp-rail { display:grid; grid-template-columns:auto 1fr; gap:4px 14px; margin-bottom:30px; padding-left:18px; }
  .sp-rail__number { grid-row:1 / 3; margin:3px 0 0; font-size:10px; }
  .sp-rail strong { max-width:none; font-size:18px; }
  .sp-rail p { grid-column:2; margin:0; max-width:none; font-size:10px; }
  .sp-chapter h2 { font-size:36px; margin:14px 0 28px; }
  .sp-prose { font-size:16px; line-height:1.85; }
  .sp-photo { padding:0; margin-top:36px!important; }
  .sp-photo .sp-glass { padding:8px 12px; bottom:12px; right:12px; font-size:10px; }
  .sp-photo figcaption { flex-direction:column; gap:6px; padding:14px 22px 0; }
  .sp-kits { padding:48px 22px; }
  .sp-kit-grid { grid-template-columns:1fr; gap:1px; }
  .sp-kit { padding:18px; }
  .sp-kit__photo { aspect-ratio:1; }
  .sp-kit__year { font-size:52px; left:20px; }
  .sp-kit__copy { padding-top:18px; }
  .sp-kit h3 { font-size:26px; }
  .sp-sources { padding:48px 22px; }
  .sp-sources ol { grid-template-columns:1fr; }
  .sp-next { grid-template-columns:1fr; }
  .sp-next > a { padding:28px 22px; }
  .sp-next > a + a { border-left:0; border-top:1px solid var(--sp-line); }
  .sp--custom .sp-cover { display:flex; flex-direction:column; min-height:0; height:auto; padding-top:76px; }
  .sp--custom .sp-cover__copy { position:relative; top:auto; left:auto; width:auto; margin:0 20px 24px; }
  .sp--custom .sp-cover h1 { font-size:clamp(44px,12vw,68px); margin-block:16px 20px; }
  .sp--custom .sp-cover__tagline { font-size:23px; }
  .sp--custom .sp-cover__read { position:static; width:100%; margin-top:24px; }
  .sp--custom .sp-cover__photo { position:relative; inset:auto; width:100%; height:420px; order:1; }
  .sp--custom .sp-cover__photo img { width:var(--sp-cover-mobile-width); }
  .sp--custom .sp-cover::after { background:none; }
  .sp--custom .sp-cover__photo::after { content:''; position:absolute; inset:0; background:linear-gradient(180deg,#080f17,transparent 12%,transparent 73%,#080f17); }
  .sp--custom .sp-cover__expand { bottom:28px; }
  .sp--custom .sp-cover__detail { bottom:40px; }
  .sp-kit-grid--1 .sp-kit { display:block; }
  .sp-kit-grid--1 .sp-kit__copy { padding:20px 0 0; }
  .sp-kit-grid--2 { grid-template-columns:1fr; }
  .sp-more-kits > div { grid-template-columns:1fr; }
  .sp-index { padding-bottom:50px; }
  .sp-index__intro { padding:48px 22px 20px; }
  .sp-index__intro h1 { font-size:clamp(44px,10.8vw,68px); margin-block:22px 30px; }
  .sp-index__intro > div > p { font-size:16px; }
  .sp-index__intro nav { gap:10px; }
  .sp-index__intro nav a { padding:14px 13px; font-size:11px; }
  .sp-index__intro nav span { margin:0 10px; }
  .sp-index__section { padding:32px 22px 0; }
  .sp-index__heading h2 { font-size:34px; }
  .sp-index__grid { grid-template-columns:1fr; gap:28px; }
}