:root {
  --challenge-green: #17452f;
  --challenge-green-2: #2f7650;
  --challenge-orange: #f39a27;
  --challenge-cream: #fff8ee;
  --challenge-paper: #fffdf9;
  --challenge-ink: #20382c;
  --challenge-muted: #74695f;
  --challenge-line: #e5ddd2;
  --challenge-shadow: 0 24px 65px rgba(38, 74, 52, .13);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; }
body { margin: 0; overflow-x: clip; background: var(--challenge-cream); color: var(--challenge-ink); font-family: "DM Sans", sans-serif; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
[hidden] { display: none !important; }

.challenge-shell { width: min(1480px, calc(100% - 48px)); margin: 0 auto; }
.challenge-eyebrow { margin: 0 0 .75rem; color: var(--challenge-orange); font-size: .78rem; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.challenge-hero { position: relative; min-height: 720px; padding: 9.5rem 0 5rem; color: #fff; background: radial-gradient(circle at 82% 18%, rgba(247, 180, 77, .34), transparent 25%), linear-gradient(125deg, #103723 0%, #1c5b3c 62%, #397d52 100%); overflow: hidden; }
.challenge-hero::after { content: ""; position: absolute; inset: auto -10% -42% 35%; height: 560px; border-radius: 50%; background: rgba(255, 255, 255, .07); transform: rotate(-8deg); }
.challenge-hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(430px, .72fr); gap: clamp(3rem, 7vw, 8rem); align-items: center; }
.challenge-hero h1 { max-width: 920px; margin: 0; font: 700 clamp(3.4rem, 6.2vw, 6.5rem)/.96 "Fraunces", Georgia, serif; letter-spacing: -.055em; }
.challenge-lead { max-width: 760px; margin: 1.5rem 0 0; color: rgba(255, 255, 255, .81); font-size: clamp(1.05rem, 1.55vw, 1.24rem); line-height: 1.7; }
.challenge-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.8rem; }
.challenge-button { min-height: 50px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid transparent; border-radius: 15px; padding: .85rem 1.3rem; font-weight: 850; text-decoration: none; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.challenge-button:hover { transform: translateY(-2px); }
.challenge-button-primary { background: #fff; color: var(--challenge-green); box-shadow: 0 14px 35px rgba(0, 0, 0, .2); }
.challenge-button-secondary { border-color: rgba(255, 255, 255, .35); background: rgba(255, 255, 255, .08); color: #fff; }
.challenge-trust { display: flex; flex-wrap: wrap; gap: .65rem; margin: 1.35rem 0 0; padding: 0; list-style: none; }
.challenge-trust li { padding: .5rem .7rem; border: 1px solid rgba(255, 255, 255, .17); border-radius: 999px; background: rgba(255, 255, 255, .08); color: rgba(255, 255, 255, .78); font-size: .78rem; font-weight: 750; }
.challenge-visual { display: grid; place-items: center; min-width: 0; }
.challenge-calendar { width: min(490px, 100%); padding: clamp(1.4rem, 3vw, 2rem); border: 1px solid rgba(255, 255, 255, .5); border-radius: 30px; background: rgba(255, 253, 249, .97); color: var(--challenge-ink); box-shadow: 0 35px 90px rgba(0, 0, 0, .28); transform: rotate(2deg); }
.challenge-calendar-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 1.1rem; border-bottom: 1px solid var(--challenge-line); }
.challenge-calendar-head img { width: 135px; height: auto; }
.challenge-calendar-head span { padding: .48rem .72rem; border-radius: 999px; background: #fff0d7; color: #bf6600; font-size: .74rem; font-weight: 900; text-transform: uppercase; }
.challenge-calendar > strong { display: block; margin: 1.35rem 0 1rem; color: var(--challenge-green); font: 700 1.55rem "Fraunces", Georgia, serif; }
.challenge-days { display: grid; grid-template-columns: repeat(7, 1fr); gap: .45rem; }
.challenge-days i { display: grid; place-items: center; aspect-ratio: 1; border: 1px solid #dde7df; border-radius: 10px; background: #fff; color: #887e75; font-style: normal; font-size: .78rem; font-weight: 800; }
.challenge-days i.done { border-color: #b9d8bf; background: #e8f5ea; color: #357044; }
.challenge-days i.today { border: 2px solid var(--challenge-orange); background: #fff3df; color: #b95e00; }
.challenge-calendar p { margin: 1.1rem 0 0; color: var(--challenge-muted); line-height: 1.55; font-size: .9rem; }

.challenge-intro { padding: 5.2rem 0; background: #fffdf9; }
.challenge-section-heading { display: grid; grid-template-columns: minmax(0, .85fr) minmax(360px, 1.15fr); gap: 2rem 6rem; align-items: end; }
.challenge-section-heading .challenge-eyebrow { grid-column: 1; }
.challenge-section-heading h2 { grid-column: 1; margin: -.4rem 0 0; color: var(--challenge-green); font: 700 clamp(2.4rem, 4.3vw, 4.4rem)/1 "Fraunces", Georgia, serif; letter-spacing: -.04em; }
.challenge-section-heading > p:last-child { grid-column: 2; grid-row: 1 / span 2; margin: 0; color: var(--challenge-muted); font-size: 1.08rem; line-height: 1.75; }
.challenge-step-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; margin-top: 3rem; }
.challenge-step-grid article { min-width: 0; padding: 1.35rem; border: 1px solid var(--challenge-line); border-radius: 22px; background: #fff; box-shadow: 0 10px 30px rgba(42, 67, 51, .05); }
.challenge-step-grid span { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; background: #eaf5ec; color: var(--challenge-green-2); font-weight: 900; }
.challenge-step-grid h3 { margin: 1rem 0 .45rem; color: var(--challenge-green); }
.challenge-step-grid p { margin: 0; color: var(--challenge-muted); line-height: 1.55; }

.challenge-workspace { padding: 5rem 0 6rem; background: radial-gradient(circle at 5% 8%, rgba(243, 154, 39, .12), transparent 24%), #f4f1eb; }
.challenge-workspace-grid { display: grid; grid-template-columns: minmax(330px, .62fr) minmax(0, 1.38fr); gap: 1.25rem; align-items: start; }
.challenge-guide, .challenge-panel { border: 1px solid var(--challenge-line); border-radius: 30px; background: #fff; box-shadow: var(--challenge-shadow); }
.challenge-guide { position: sticky; top: 92px; padding: clamp(1.4rem, 3vw, 2rem); }
.challenge-guide h2 { margin: 0 0 1.5rem; color: var(--challenge-green); font: 700 clamp(2rem, 3vw, 3rem)/1.05 "Fraunces", Georgia, serif; }
.challenge-phase { display: grid; gap: .3rem; padding: 1rem 0; border-top: 1px solid var(--challenge-line); }
.challenge-phase b { color: var(--challenge-orange); font-size: .73rem; letter-spacing: .08em; text-transform: uppercase; }
.challenge-phase strong { color: var(--challenge-green); }
.challenge-phase p, .challenge-principle p { margin: 0; color: var(--challenge-muted); line-height: 1.55; font-size: .9rem; }
.challenge-principle { margin-top: 1rem; padding: 1.1rem; border-radius: 18px; background: #fff3de; color: #6c4516; }
.challenge-principle strong { display: block; margin-bottom: .35rem; }
.challenge-panel { min-width: 0; padding: clamp(1.3rem, 3vw, 2.25rem); }
.challenge-panel-head { padding-bottom: 1.4rem; border-bottom: 1px solid var(--challenge-line); }
.challenge-panel-head > span { display: inline-flex; padding: .4rem .65rem; border-radius: 999px; background: #eaf5ec; color: var(--challenge-green-2); font-size: .72rem; font-weight: 900; text-transform: uppercase; }
.challenge-panel-head h2 { margin: .75rem 0 .45rem; color: var(--challenge-green); font: 700 clamp(2rem, 3.2vw, 3.2rem)/1.03 "Fraunces", Georgia, serif; }
.challenge-panel-head p { max-width: 760px; margin: 0; color: var(--challenge-muted); line-height: 1.65; }
.challenge-form { display: grid; gap: 1.2rem; margin-top: 1.5rem; }
.challenge-form label, .challenge-form legend { color: #394d41; font-size: .86rem; font-weight: 800; }
.challenge-form label small { color: #978b81; font-weight: 600; }
.challenge-form input:not([type="checkbox"]):not([type="radio"]), .challenge-form textarea, .challenge-form select { width: 100%; margin-top: .45rem; border: 1px solid #dcd4ca; border-radius: 14px; background: #fffdf9; color: var(--challenge-ink); padding: .82rem .9rem; outline: none; }
.challenge-form input:focus, .challenge-form textarea:focus, .challenge-form select:focus { border-color: #67a776; box-shadow: 0 0 0 3px rgba(91, 158, 106, .15); }
.challenge-field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.challenge-form fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.challenge-choice-row { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: .7rem; }
.challenge-choice-row label { position: relative; }
.challenge-choice-row input, .challenge-routine-grid input { position: absolute; opacity: 0; pointer-events: none; }
.challenge-choice-row span { display: block; min-width: 58px; padding: .7rem .8rem; border: 1px solid #dcd4ca; border-radius: 13px; background: #fff; text-align: center; }
.challenge-choice-row input:checked + span { border-color: #5a9b68; background: #e9f5eb; color: var(--challenge-green); box-shadow: 0 0 0 2px rgba(90, 155, 104, .13); }
.challenge-routine-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .7rem; margin-top: .7rem; }
.challenge-routine-grid label { position: relative; min-width: 0; }
.challenge-routine-grid span { display: grid; gap: .25rem; min-height: 100%; padding: 1rem; border: 1px solid #ddd5ca; border-radius: 17px; background: #fff; }
.challenge-routine-grid b { color: var(--challenge-green); font-size: .96rem; }
.challenge-routine-grid small { color: var(--challenge-muted); font-size: .78rem; font-weight: 550; line-height: 1.45; }
.challenge-routine-grid input:checked + span { border-color: #5a9b68; background: #edf7ef; box-shadow: 0 0 0 2px rgba(90, 155, 104, .14); }
.challenge-check { display: grid !important; grid-template-columns: 20px minmax(0, 1fr); gap: .65rem; align-items: start; padding: .9rem 1rem; border: 1px solid #dce6dd; border-radius: 15px; background: #f6faf6; line-height: 1.5; }
.challenge-check input { width: 18px; height: 18px; margin: .15rem 0 0; accent-color: var(--challenge-green-2); }
.challenge-check-optional { border-style: dashed; background: #fffdf9; color: #665b52 !important; font-weight: 600 !important; }
.challenge-button-submit { width: 100%; border: 0; background: var(--challenge-green); color: #fff; box-shadow: 0 12px 28px rgba(23, 69, 47, .18); }
.challenge-button-submit:disabled { opacity: .55; cursor: wait; transform: none; }
.challenge-form-status { min-height: 1.4rem; margin: -.45rem 0 0; color: var(--challenge-muted); font-size: .86rem; }
.challenge-form-status.is-error { color: #b53a32; }
.challenge-form-status.is-success { color: #2e7a47; }
.challenge-timeline { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .7rem; margin-top: 1.5rem; }
.challenge-day { display: grid; gap: .32rem; min-width: 0; padding: 1rem; border: 1px solid #ddd5ca; border-radius: 17px; background: #fff; color: var(--challenge-muted); text-align: left; }
.challenge-day strong { color: var(--challenge-green); font-size: 1rem; }
.challenge-day small { line-height: 1.35; }
.challenge-day.is-available { border-color: var(--challenge-orange); background: #fff5e5; color: #7a541f; }
.challenge-day.is-complete { border-color: #75ae80; background: #edf7ef; }
.challenge-day.is-locked { opacity: .62; cursor: not-allowed; }
.challenge-subform { margin-top: 1.25rem; padding: 1.25rem; border: 1px solid #dcd4ca; border-radius: 20px; background: #fffaf2; }
.challenge-subform h3 { margin: 0; color: var(--challenge-green); font: 700 1.65rem "Fraunces", Georgia, serif; }
.challenge-inline-actions { display: flex; gap: .8rem; align-items: center; }
.challenge-inline-actions .challenge-button { width: auto; flex: 1; }
.challenge-text-button { border: 0; background: transparent; color: #74695f; font-weight: 800; text-decoration: underline; text-underline-offset: 3px; }
.challenge-progress-actions { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center; margin-top: 1.5rem; padding-top: 1.4rem; border-top: 1px solid var(--challenge-line); }
.challenge-button-light { border-color: #c9dccc; background: #edf7ef; color: var(--challenge-green); }

.challenge-privacy { padding: 4.5rem 0; background: var(--challenge-green); color: #fff; }
.challenge-privacy-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 3rem 7rem; align-items: start; }
.challenge-privacy h2 { margin: 0; font: 700 clamp(2.4rem, 4vw, 4rem)/1 "Fraunces", Georgia, serif; }
.challenge-privacy-points { display: grid; gap: .75rem; }
.challenge-privacy-points p { margin: 0; padding: 1rem 1.1rem; border: 1px solid rgba(255, 255, 255, .15); border-radius: 16px; background: rgba(255, 255, 255, .08); color: rgba(255, 255, 255, .79); line-height: 1.55; }
.challenge-privacy-points b { color: #fff; }

@media (max-width: 1050px) {
  .challenge-hero-grid { grid-template-columns: 1fr minmax(340px, .72fr); gap: 2rem; }
  .challenge-step-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .challenge-workspace-grid { grid-template-columns: 1fr; }
  .challenge-guide { position: static; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
  .challenge-guide > .challenge-eyebrow, .challenge-guide > h2, .challenge-principle { grid-column: 1 / -1; }
  .challenge-phase { border: 1px solid var(--challenge-line); border-radius: 16px; padding: 1rem; }
}

@media (max-width: 780px) {
  .challenge-shell { width: min(100% - 28px, 680px); }
  .challenge-hero { min-height: 0; padding: 7.4rem 0 4rem; }
  .challenge-hero-grid, .challenge-section-heading, .challenge-privacy-grid { grid-template-columns: 1fr; }
  .challenge-hero h1 { font-size: clamp(3rem, 13vw, 4.7rem); }
  .challenge-visual { margin-top: 1rem; }
  .challenge-section-heading > * { grid-column: auto !important; grid-row: auto !important; }
  .challenge-section-heading > p:last-child { margin-top: .3rem; }
  .challenge-guide { display: block; }
  .challenge-phase { margin-top: .7rem; }
  .challenge-field-grid, .challenge-routine-grid { grid-template-columns: 1fr; }
  .challenge-timeline { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 520px) {
  .challenge-shell { width: calc(100% - 20px); }
  .challenge-hero h1 { font-size: clamp(2.7rem, 14vw, 4rem); }
  .challenge-actions, .challenge-inline-actions, .challenge-progress-actions { align-items: stretch; flex-direction: column; }
  .challenge-button { width: 100%; }
  .challenge-step-grid { grid-template-columns: 1fr; }
  .challenge-calendar { padding: 1.2rem; border-radius: 22px; transform: none; }
  .challenge-calendar-head img { width: 110px; }
  .challenge-panel, .challenge-guide { border-radius: 22px; padding: 1.1rem; }
  .challenge-choice-row { display: grid; grid-template-columns: repeat(3, 1fr); }
  .challenge-choice-row span { min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}