/* Science Catalogs Partners */
@font-face { font-family: "Montserrat"; src: url("../fonts/montserrat.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }

:root {
  --navy: #013a56; --navy-2: #012233; --navy-3: #0a4d70;
  --accent: #eb6500; --accent-ink: #ffffff; --accent-soft: #fff1e6; --accent-text: #b44d00;
  --ink: #14212b; --muted: #5b6b78; --line: #e2e8ee; --bg: #f5f7fa; --card: #ffffff;
  --ok: #12805c; --ok-soft: #e7f6ef; --warn: #9a5b00; --warn-soft: #fff6e0; --bad: #b42318; --bad-soft: #fdecea;
  --radius: 14px; --shadow: 0 1px 2px rgba(1, 34, 51, .06), 0 6px 20px rgba(1, 34, 51, .06);
  --font: "Montserrat", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font: 15.5px/1.6 var(--font); color: var(--ink); background: var(--bg); }
img, svg { display: block; max-width: 100%; }
a { color: var(--navy-3); text-underline-offset: 2px; }
a:hover { color: var(--accent-text); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(1.7rem, 3.4vw, 2.3rem); font-weight: 800; }
h2 { font-size: 1.25rem; font-weight: 750; }
h3 { font-size: 1.02rem; font-weight: 700; }
p { margin: 0 0 1em; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.i { width: 1.1em; height: 1.1em; flex: none; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: #fff; padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }
.muted { color: var(--muted); }
.small { font-size: .86rem; }
.center { text-align: center; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
hr { border: 0; border-top: 1px solid var(--line); margin: 1.4em 0; }

.wrap { max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.wrap.narrow { max-width: 760px; }
main.wrap { padding-top: 28px; padding-bottom: 48px; }

/* header */
.top { background: var(--navy); color: #fff; position: sticky; top: 0; z-index: 5; box-shadow: 0 1px 0 rgba(255,255,255,.06); }
.top-in { max-width: 1140px; margin: 0 auto; padding: 10px 20px; display: flex; align-items: center; gap: 16px; }
.brand { display: flex; align-items: center; gap: 12px; color: #fff; text-decoration: none; margin-right: auto; }
.brand img { height: 32px; width: auto; }
.brand span { font-weight: 700; font-size: .95rem; padding-left: 12px; border-left: 1px solid rgba(255,255,255,.3); letter-spacing: .02em; }
.brand:hover { color: #fff; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a, .nav button { color: rgba(255,255,255,.86); text-decoration: none; font: 600 .9rem var(--font); padding: 8px 12px; border-radius: 8px; background: none; border: 0; cursor: pointer; }
.nav a:hover, .nav button:hover { color: #fff; background: rgba(255,255,255,.08); }
.nav a[aria-current="page"] { color: #fff; background: rgba(255,255,255,.12); }
.nav .nav-cta { background: var(--accent); color: var(--accent-ink); }
.nav .nav-cta:hover { background: #d45b00; }
.nav-out { margin: 0; }
.nav-toggle { display: none; background: none; border: 1px solid rgba(255,255,255,.3); color: #fff; border-radius: 8px; padding: 6px 8px; cursor: pointer; }
.nav-toggle .i { width: 22px; height: 22px; }
@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 100%; background: var(--navy); flex-direction: column; align-items: stretch; padding: 8px 12px 14px; box-shadow: 0 8px 20px rgba(0,0,0,.2); }
  .nav.open { display: flex; }
  .nav a, .nav button { width: 100%; text-align: left; padding: 11px 12px; }
}

.flash { padding: 12px 0; font-weight: 600; }
.flash-ok { background: var(--ok-soft); color: #0b5a40; }
.flash-err { background: var(--bad-soft); color: var(--bad); }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: 650 .92rem var(--font); padding: 10px 18px; border-radius: 10px; border: 1px solid var(--line); background: #fff; color: var(--ink); text-decoration: none; cursor: pointer; line-height: 1.2; min-height: 42px; }
.btn:hover { border-color: #c8d3dc; color: var(--ink); background: #f8fafb; }
.btn-accent { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-accent:hover { background: #d45b00; border-color: #d45b00; color: #fff; }
.btn-ghost { background: transparent; }
.btn-ghost-light { background: transparent; border-color: rgba(255,255,255,.45); color: #fff; }
.btn-ghost-light:hover { background: rgba(255,255,255,.1); color: #fff; border-color: #fff; }
.btn-sm { padding: 7px 12px; min-height: 36px; font-size: .86rem; }
.btn-lg { padding: 13px 22px; font-size: 1rem; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

/* cards and layout */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px 24px; margin-bottom: 20px; }
.card > :last-child { margin-bottom: 0; }
.card.scroll { overflow-x: auto; }
.head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.head h1 { margin-bottom: .2em; }
.head p { margin: 0; max-width: 760px; }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .76rem; font-weight: 700; color: var(--accent-text); margin-bottom: .5em; }
.block { margin: 30px 0; }
.block-head { margin-bottom: 14px; }
.block-head h2 { margin-bottom: .2em; }
.block-head p { margin: 0; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.grid-2 > .card { margin-bottom: 0; }
.grid-2 + .grid-2, .grid-2 + .block, .block + .grid-2 { margin-top: 20px; }
.grid-wide { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); align-items: start; }
@media (max-width: 820px) { .grid-2, .grid-wide { grid-template-columns: 1fr; } }

.note, .ok-box, .alert { display: flex; gap: 10px; align-items: flex-start; padding: 12px 16px; border-radius: 10px; margin: 0 0 18px; }
.note { background: var(--warn-soft); color: #6b4200; }
.ok-box { background: var(--ok-soft); color: #0b5a40; }
.alert { background: var(--bad-soft); color: var(--bad); }
.note .i, .ok-box .i { margin-top: 3px; }

/* hero */
.hero { background: radial-gradient(110% 90% at 100% 0%, var(--navy-3) 0%, var(--navy) 45%, var(--navy-2) 100%); color: #fff; padding: 56px 0 60px; }
.hero h1 { font-size: clamp(2rem, 4.6vw, 3.1rem); max-width: 16em; }
.hero h1 em { font-style: normal; color: #ffb170; }
.hero .eyebrow { color: #ffb170; }
.hero .lead { font-size: 1.08rem; color: rgba(255,255,255,.86); max-width: 38em; }
.hero-in { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 40px; align-items: center; }
.hero-note { color: rgba(255,255,255,.7); margin-top: 14px; }
.hero-sm { background: none; color: inherit; padding: 6px 0 22px; }
.hero-sm .eyebrow { color: var(--accent-text); }
.hero-sm .lead { color: var(--muted); }
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.steps li { display: flex; gap: 14px; align-items: flex-start; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14); border-radius: 14px; padding: 14px 16px; }
.steps li > span { flex: none; width: 34px; height: 34px; border-radius: 50%; background: var(--accent); display: grid; place-items: center; font-weight: 800; }
.steps p { margin: 2px 0 0; color: rgba(255,255,255,.78); font-size: .92rem; }
@media (max-width: 820px) { .hero-in { grid-template-columns: 1fr; } .hero { padding: 36px 0 40px; } }

/* numbers */
.tiles { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 26px; }
.tile { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 2px; }
.tile b { font-size: 1.9rem; font-weight: 800; line-height: 1.1; font-variant-numeric: tabular-nums; }
.tile span { font-weight: 650; }
.tile small { color: var(--muted); font-size: .8rem; }
.tile-accent { background: var(--navy); border-color: var(--navy); color: #fff; }
.tile-accent small { color: rgba(255,255,255,.75); }
@media (max-width: 820px) { .tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

.earn { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.earn-item { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
.earn-item b { display: block; font-size: 2.2rem; font-weight: 800; color: var(--accent-text); line-height: 1.1; }
.earn-item span { color: var(--muted); font-weight: 600; font-size: .92rem; }
@media (max-width: 820px) { .earn { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

.code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; letter-spacing: .12em; background: var(--accent-soft); color: var(--accent-text); padding: 2px 8px; border-radius: 6px; }
.badge { display: inline-flex; align-items: center; gap: 5px; font-size: .76rem; font-weight: 700; padding: 3px 9px; border-radius: 999px; vertical-align: middle; }
.badge-amb { background: #fff4d6; color: #7a5200; }
.badge .i { width: 14px; height: 14px; }

/* links */
.links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 820px) { .links { grid-template-columns: 1fr; } }
.link-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 12px; }
.link-card header { display: flex; gap: 12px; align-items: flex-start; }
.link-card header p { margin: 0; }
.link-card h3 { margin: 0 0 2px; }
.pi { flex: none; width: 40px; height: 40px; border-radius: 10px; background: var(--accent-soft); color: var(--accent-text); display: grid; place-items: center; }
.pi .i { width: 22px; height: 22px; }
.link-row { display: flex; gap: 8px; }
.link-in { flex: 1; min-width: 0; font: 500 .86rem ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink); }
.share { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-flex; align-items: center; gap: 6px; font: 600 .8rem var(--font); padding: 6px 10px; border-radius: 999px; border: 1px solid var(--line); background: #fff; color: var(--ink); text-decoration: none; cursor: pointer; }
.chip:hover { border-color: var(--accent); color: var(--accent-text); }
.chip .i { width: 15px; height: 15px; }
.link-stats { margin: 0; }
.conf-list { list-style: none; margin: 16px 0 0; padding: 0; border-top: 1px solid var(--line); }
.conf-list li { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.conf-list li div { display: flex; flex-direction: column; }
.fwd { width: 100%; font: 500 .88rem/1.5 var(--font); padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); resize: vertical; margin-bottom: 12px; }

.people { list-style: none; margin: 0; padding: 0; }
.people li { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.people li:last-child { border-bottom: 0; }
.people li div { display: flex; flex-direction: column; min-width: 0; }
.pill { display: inline-block; font-size: .78rem; font-weight: 700; padding: 3px 10px; border-radius: 999px; background: var(--bg); color: var(--muted); white-space: nowrap; }
.pill-ok { background: var(--ok-soft); color: var(--ok); }
.pill-wait { background: var(--warn-soft); color: var(--warn); }
.pill-bad { background: var(--bad-soft); color: var(--bad); }
.pill-grey { background: #eef1f4; color: var(--muted); }

.cta-card { display: flex; gap: 16px; align-items: flex-start; }
.cta-card h2 { margin-bottom: .3em; }

/* rewards */
.rewards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 900px) { .rewards { grid-template-columns: 1fr; } }
.reward { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 8px; }
.reward p { margin: 0; }
.reward-top { display: flex; justify-content: space-between; align-items: center; }
.cost { font-weight: 800; color: var(--accent-text); background: var(--accent-soft); padding: 4px 10px; border-radius: 999px; font-size: .86rem; }
.reward .form { margin-top: auto; }
progress.meter { width: 100%; height: 8px; border: 0; border-radius: 99px; background: #e7ecf0; overflow: hidden; margin-top: auto; appearance: none; }
progress.meter::-webkit-progress-bar { background: #e7ecf0; border-radius: 99px; }
progress.meter::-webkit-progress-value { background: var(--accent); border-radius: 99px; }
progress.meter::-moz-progress-bar { background: var(--accent); border-radius: 99px; }

.products { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; }
.product { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.product .pi { margin-bottom: 10px; }
.product p { margin: 0; }
@media (max-width: 1000px) { .products { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* tables */
.table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.table th { text-align: left; font-size: .76rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); font-weight: 700; padding: 8px 10px; border-bottom: 2px solid var(--line); }
.table td { padding: 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table th.num, .table td.num { text-align: right; }
@media (max-width: 640px) {
  .table thead { display: none; }
  .table tr { display: block; padding: 10px 0; border-bottom: 1px solid var(--line); }
  .table td { display: flex; justify-content: space-between; gap: 12px; border: 0; padding: 4px 0; text-align: right; }
  .table td::before { content: attr(data-label); font-weight: 650; color: var(--muted); text-align: left; }
  .table td:not([data-label])::before { content: none; }
}

/* forms */
.form { display: flex; flex-direction: column; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 5px; border: 0; padding: 0; margin: 0; min-width: 0; }
.field > span, .field legend { font-weight: 650; font-size: .9rem; }
.field em { font-style: normal; font-weight: 500; color: var(--muted); }
.field input, .field textarea, .field select { font: 500 .95rem var(--font); padding: 10px 12px; border: 1px solid #cdd6de; border-radius: 9px; background: #fff; color: var(--ink); width: 100%; }
.field input:focus, .field textarea:focus { border-color: var(--navy-3); outline: 3px solid rgba(10, 77, 112, .15); }
[aria-invalid="true"] { border-color: var(--bad) !important; }
.err { color: var(--bad); font-weight: 600; font-size: .84rem; }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: .92rem; cursor: pointer; }
.check input { margin-top: 4px; width: 18px; height: 18px; flex: none; accent-color: var(--accent); }
.row2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.row3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
@media (max-width: 640px) { .row2, .row3 { grid-template-columns: 1fr; } }
.auth { max-width: 460px; margin: 10px auto; }

.ticks { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.ticks li { display: flex; gap: 10px; align-items: flex-start; }
.ticks .i { color: var(--ok); margin-top: 4px; }

.amb-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.amb-grid li { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; display: flex; flex-direction: column; }

.board { list-style: none; margin: 0; padding: 0; }
.board li { display: grid; grid-template-columns: 40px minmax(0, 1fr) auto; gap: 12px; align-items: center; padding: 12px 6px; border-bottom: 1px solid var(--line); }
.board li:last-child { border-bottom: 0; }
.board li.me { background: var(--accent-soft); border-radius: 10px; }
.board li div { display: flex; flex-direction: column; min-width: 0; }
.rank { width: 32px; height: 32px; border-radius: 50%; background: var(--bg); display: grid; place-items: center; font-weight: 800; }
.rank.top { background: var(--accent); color: #fff; }
.score { text-align: right; display: flex; flex-direction: column; font-size: .86rem; color: var(--muted); }
.score b { font-size: 1.1rem; color: var(--ink); }

.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 4px 16px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 650; padding: 10px 0; }
.faq details p { color: var(--muted); }

.prose { padding-top: 28px; }
.prose h2 { margin-top: 1.6em; font-size: 1.1rem; }
.prose li { margin-bottom: .4em; }

/* QR dialog */
dialog.qr { border: 0; border-radius: 16px; padding: 22px; box-shadow: 0 20px 60px rgba(0,0,0,.3); max-width: min(92vw, 380px); text-align: center; }
dialog.qr::backdrop { background: rgba(1, 34, 51, .6); }
dialog.qr canvas { width: 260px; height: 260px; margin: 12px auto; image-rendering: pixelated; }
dialog.qr .actions { justify-content: center; }
.copied { background: var(--ok-soft) !important; border-color: var(--ok) !important; color: var(--ok) !important; }

/* footer */
.foot { border-top: 1px solid var(--line); background: #fff; padding: 22px 0; font-size: .88rem; color: var(--muted); }
.foot-in { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; }
.foot p { margin: 0; }
.foot-links { display: flex; flex-wrap: wrap; gap: 16px; }
dialog.qr .qr-link { overflow-wrap: anywhere; }
.card .share + p { margin-top: 12px; }