/* Challenge layout: overview, rewards, publishing checklist, rules, application. */
.challenge-page { --challenge-gap: clamp(20px, 3vw, 40px); --challenge-nav-height: 64px; overflow-wrap: anywhere; }
.challenge-page .container { max-width: 1280px; }
.challenge-hero { padding: clamp(40px, 6vw, 80px) 0 40px; }
.challenge-hero-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); align-items: center; gap: var(--challenge-gap); }
.challenge-kicker { margin: 0 0 16px; color: var(--muted); font-size: 12px; font-weight: 750; letter-spacing: .035em; }
.challenge-dot { display: inline-block; width: 8px; height: 8px; margin-right: 8px; border-radius: 50%; background: var(--accent); }
.challenge-hero h1 { margin: 0; font-size: clamp(32px, 4.4vw, 60px); line-height: 1.16; letter-spacing: -.045em; font-weight: 850; }
.challenge-hero h1 span { text-decoration: underline; text-decoration-color: var(--accent); text-decoration-thickness: 5px; text-underline-offset: 8px; }
.challenge-lead { max-width: 600px; margin: 26px 0; color: var(--muted); font-size: 16px; line-height: 1.8; }
.challenge-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.challenge-page .button { text-align: center; white-space: normal; }
.challenge-caption { margin: 14px 0 0; color: var(--muted); font-size: 12px; }
.challenge-pass { padding: clamp(24px, 3vw, 36px); border-radius: 20px; background: var(--text); color: var(--bg); }
.challenge-pass-top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: 12px; }
.challenge-pass-top span:last-child { border: 1px solid currentColor; border-radius: 20px; padding: 2px 10px; }
.challenge-pass-title { margin: 34px 0 20px; font-size: clamp(24px, 2.5vw, 34px); line-height: 1.35; font-weight: 800; letter-spacing: -.03em; }
.challenge-pass > p:not(.challenge-pass-title) { font-size: 13px; }
.challenge-pass-bottom { display: grid; gap: 8px; margin-top: 28px; padding-top: 20px; border-top: 1px solid currentColor; font-size: 14px; }
.challenge-pass-bottom span { font-size: 12px; }
.challenge-jump-links { position: sticky; top: calc(var(--site-header-height) + 8px); z-index: 50; display: flex; gap: 6px; padding: 8px; margin-bottom: 28px; overflow-x: auto; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); box-shadow: var(--soft-shadow); }
.challenge-jump-links a { flex: 1 0 auto; min-height: 44px; padding: 10px 14px; border-radius: 10px; text-align: center; white-space: nowrap; font-size: 13px; font-weight: 700; transition: background-color 160ms ease, color 160ms ease; }
.challenge-jump-links a:hover, .challenge-jump-links a:focus-visible, .challenge-jump-links a[aria-current="location"] { background: var(--accent); color: #151515; }
.challenge-section { position: relative; margin: 28px 0; padding: clamp(24px, 3vw, 40px); border: 1px solid var(--line); border-radius: 24px; background: var(--surface); scroll-margin-top: calc(var(--challenge-nav-height) + 28px); }
.challenge-section:nth-of-type(even) { background: var(--bg-subtle); }
.challenge-section > .challenge-kicker, .challenge-section > div > .challenge-kicker { display: inline-flex; align-items: center; gap: 10px; color: var(--text); }
.challenge-section .challenge-section-number { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 9px; background: var(--accent-soft); color: var(--text); font-size: 12px; font-weight: 800; }
.challenge-section h2, .challenge-closing h2 { max-width: 900px; margin: 0; font-size: clamp(25px, 3vw, 38px); line-height: 1.3; letter-spacing: -.035em; }
.challenge-section-lead { max-width: 850px; margin: 16px 0 0; color: var(--muted); font-size: 15px; }
.challenge-reward-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 12px; margin: 28px 0 0; }
.challenge-tier { padding: 20px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.challenge-tier h3 { margin: 0; font-size: 13px; font-weight: 500; }
.challenge-tier h3 strong { font-weight: 800; }
.challenge-tier p { display: grid; gap: 4px; margin: 24px 0 4px; }
.challenge-tier p > span { color: var(--muted); font-size: 11px; }
.challenge-tier p > strong { font-size: 36px; line-height: 1.25; letter-spacing: -.04em; font-variant-numeric: tabular-nums; }
.challenge-tier small { display: block; margin-top: 4px; font-size: 13px; font-weight: 500; letter-spacing: 0; }
.challenge-tier-lifetime { background: var(--accent); border-color: var(--accent); color: #151515; }
.challenge-tier-lifetime p > span { color: #454000; }
.challenge-tier-lifetime p > strong { font-size: 25px; line-height: 1.8; }
.challenge-tier-note { font-size: 11px; }
.challenge-notice, .challenge-bonus { margin-top: 20px; padding: 22px 24px; border-radius: 12px; background: var(--bg-subtle); border: 1px solid var(--line); }
.challenge-bonus { background: var(--accent-soft); border-color: transparent; }
.challenge-notice strong, .challenge-notice h3, .challenge-bonus h3 { margin: 0; font-size: 16px; line-height: 1.5; }
.challenge-notice p, .challenge-bonus p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }
.challenge-text-link { display: inline-block; margin-top: 20px; font-size: 13px; font-weight: 700; text-decoration: underline; text-underline-offset: 5px; }
.challenge-format-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 28px; }
.challenge-format-card { padding: 24px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; }
.challenge-format-card h3 { margin: 0; font-size: 15px; }
.challenge-format-metric { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px; margin: 14px 0 0; }
.challenge-format-metric strong { font-size: 44px; line-height: 1.1; letter-spacing: -.05em; }
.challenge-format-metric span { color: var(--muted); font-size: 13px; }
.challenge-hashtags { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px; margin-top: 16px; padding: 22px 24px; border-radius: 12px; background: var(--accent-soft); }
.challenge-hashtags h3 { margin: 0; font-size: 15px; }
.challenge-tag-list { display: flex; flex-wrap: wrap; gap: 8px 16px; font-size: 15px; font-weight: 750; }
.challenge-format-note { margin: 16px 0 0; color: var(--muted); font-size: 14px; }
.challenge-steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin: 28px 0 0; padding: 0; list-style: none; }
.challenge-steps li { padding: 22px; border: 1px solid var(--line); border-radius: 12px; }
.challenge-step-number { display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--bg-subtle); font-size: 12px; font-weight: 750; }
.challenge-steps h3 { margin: 18px 0 10px; font-size: 17px; line-height: 1.4; }
.challenge-steps p { margin: 0; color: var(--muted); font-size: 14px; }
.challenge-content-ideas, .challenge-platforms { margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--line); }
.challenge-content-ideas h3, .challenge-platforms h3 { margin: 0 0 16px; font-size: 18px; }
.challenge-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.challenge-chips li { padding: 6px 12px; background: var(--bg-subtle); border-radius: 6px; font-size: 12px; }
.challenge-content-ideas p, .challenge-platforms p { max-width: 900px; margin: 16px 0 0; color: var(--muted); font-size: 14px; }
.challenge-condition-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 28px; }
.challenge-condition-grid h3 { margin: 0 0 12px; font-size: 17px; }
.challenge-condition-grid p { margin: 0; color: var(--muted); font-size: 14px; }
.challenge-faq { margin-top: 24px; }
.challenge-faq details { margin-top: 10px; padding: 0 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.challenge-faq details[open] { border-color: var(--line-strong); }
.challenge-faq summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 0; font-size: 15px; font-weight: 700; list-style: none; }
.challenge-faq summary::-webkit-details-marker { display: none; }
.challenge-faq summary::after { content: "+"; flex: 0 0 24px; text-align: center; font-size: 24px; line-height: 1; font-weight: 400; }
.challenge-faq details[open] summary::after { content: "−"; }
.challenge-faq ul { margin: 0 0 20px; padding-left: 22px; color: var(--muted); font-size: 14px; }
.challenge-faq li { margin-bottom: 10px; padding-left: 4px; }
.challenge-faq details p { margin: 0 0 20px; color: var(--muted); font-size: 14px; }
.challenge-application { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; gap: var(--challenge-gap); }
.challenge-email { display: block; width: fit-content; max-width: 100%; margin: 24px 0 20px; font-size: clamp(18px, 2vw, 24px); font-weight: 750; text-decoration: underline; text-underline-offset: 5px; }
.challenge-reward-card { padding: 28px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); }
.challenge-reward-card h3 { margin: 0 0 20px; font-size: 20px; }
.challenge-reward-card > p { margin: 18px 0 0; color: var(--muted); font-size: 13px; }
.challenge-checklist { margin: 0; padding-left: 24px; }
.challenge-checklist li { padding: 12px 0 12px 6px; border-top: 1px solid var(--line); font-size: 14px; }
.challenge-checklist li::marker { font-weight: 800; }
.challenge-checklist span { color: var(--muted); }
.challenge-apply-reminder { padding: 16px; border-radius: 8px; background: var(--accent-soft); }
.challenge-closing { padding: 56px 0 72px; text-align: center; }
.challenge-closing h2 { margin-inline: auto; }
.challenge-closing > p:not(.challenge-kicker) { color: var(--muted); font-size: 14px; }
.challenge-closing .challenge-actions { margin-top: 24px; justify-content: center; }
.challenge-tier, .challenge-format-card, .challenge-steps > li { transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease; }
.challenge-steps > li:focus-within { border-color: var(--line-strong); box-shadow: var(--soft-shadow); }
.challenge-copy-area { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; width: 100%; }
.challenge-copy-button { min-height: 44px; padding: 9px 16px; border: 1px solid var(--line-strong); border-radius: 10px; background: var(--surface); color: var(--text); font-size: 13px; font-weight: 700; cursor: pointer; }
.challenge-copy-button:hover, .challenge-copy-button:focus-visible { background: var(--text); color: var(--surface); }
.challenge-copy-button[hidden] { display: none; }
.challenge-copy-status { font-size: 13px; color: var(--muted); }
@media (hover: hover) and (pointer: fine) {
  .challenge-tier:hover, .challenge-format-card:hover, .challenge-steps > li:hover { transform: translateY(-4px); box-shadow: var(--soft-shadow); border-color: var(--line-strong); }
}
@media (max-width: 1100px) {
  .challenge-reward-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .challenge-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .challenge-hero-grid, .challenge-application { grid-template-columns: 1fr; }
  .challenge-section { margin-block: 20px; padding: 24px 18px; border-radius: 18px; }
  .challenge-hero { padding: 36px 0 28px; }
  .challenge-pass-title { margin-top: 22px; }
  .challenge-reward-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .challenge-format-grid, .challenge-condition-grid { grid-template-columns: 1fr; gap: 12px; }
  .challenge-format-card { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px; }
  .challenge-format-metric { margin: 0; justify-content: flex-end; text-align: right; }
  .challenge-format-metric strong { font-size: 36px; }
  .challenge-condition-grid > div { padding: 18px; border: 1px solid var(--line); border-radius: 12px; }
  .challenge-notice, .challenge-bonus, .challenge-reward-card, .challenge-hashtags { padding: 20px; }
  .challenge-jump-links { border-radius: 12px; }
  .challenge-jump-links a { padding-inline: 12px; }
}
@media (max-width: 480px) {
  .challenge-steps { grid-template-columns: 1fr; }
  .challenge-actions { flex-direction: column; }
  .challenge-actions .button { width: 100%; justify-content: center; }
  .challenge-tier { padding: 18px 14px; }
  .challenge-tier-lifetime p > strong { font-size: 23px; }
  .challenge-format-card { align-items: flex-start; }
  .challenge-format-metric { flex-direction: column; align-items: flex-end; gap: 4px; }
}
@media (prefers-reduced-motion: reduce) {
  .challenge-page *, .challenge-page *::before, .challenge-page *::after { transition: none; animation: none; }
  .challenge-tier:hover, .challenge-format-card:hover, .challenge-steps > li:hover { transform: none; }
  html:has(.challenge-page) { scroll-behavior: auto; }
}