/* A compact editor: the clue, the choices, and their visible consequence. */
.inbox-arena { --arena-ink:#193c49; --arena-blue:#1589b9; --arena-navy:#183c49; --arena-line:#dce7e7; --arena-panel-height:456px; color:var(--arena-ink); background:#f1f6f6; padding:30px 0 38px; font-family:Nunito,Arial,sans-serif; }
.inbox-arena *, .inbox-arena *::before, .inbox-arena *::after { box-sizing:border-box; }
.inbox-arena [hidden] { display:none!important; }
.inbox-arena button { font:inherit; cursor:pointer; }
.inbox-arena button:disabled { cursor:default; }
.inbox-arena :is(button,a):focus-visible { outline:3px solid #149ee7; outline-offset:4px; }
.inbox-arena [tabindex='-1']:focus { outline:none; }
.inbox-arena .arena-tools-back { display:inline-flex; align-items:center; gap:9px; min-height:36px; color:#587681; font-size:13px; font-weight:800; margin-bottom:12px; }
.arena-tools-back:hover { text-decoration:underline; }
.inbox-arena .arena-intro { display:flex; align-items:center; justify-content:space-between; gap:28px; margin-bottom:24px; }
.inbox-arena .arena-eyebrow { font-size:10px; line-height:1.4; letter-spacing:.12em; font-weight:850; color:#64818a; margin:0 0 9px; }
.inbox-arena .arena-intro :is(h1,h2) { font:850 clamp(30px,3vw,42px)/1.1 Nunito,Arial,sans-serif; margin:0 0 12px; letter-spacing:-.045em; color:var(--arena-ink); }
.arena-intro :is(h1,h2) span { color:#1686b1; }
.inbox-arena .arena-intro p:last-child { font-size:15px; line-height:1.55; color:#647c85; margin:0; max-width:670px; }
.arena-intro-actions { display:grid; gap:13px; justify-items:end; flex-shrink:0; }
.arena-simulation { color:#778c8e; font-size:11px; }
.arena-open-link { color:#187ba2; font-size:12px; font-weight:800; }
.inbox-arena .arena-machine { background:#fff; border:1px solid #cedde0; border-radius:20px; box-shadow:0 3px 6px #153f4905,0 20px 45px -28px #1644513b; overflow:clip; overflow-anchor:none; }
.arena-match-header { display:flex; align-items:center; gap:24px; min-height:58px; padding:10px 24px; background:var(--arena-navy); color:white; }
.arena-scoreboard { display:flex; align-items:center; gap:14px; }
.arena-player-score { display:inline-flex; align-items:center; gap:10px; color:#d7e8eb; font-size:12px; font-weight:800; white-space:nowrap; }
.arena-player-score b { display:grid; place-items:center; min-width:25px; font-size:22px; line-height:1.2; font-variant-numeric:tabular-nums; color:#fff; }
.arena-score-divider { color:#64828d; font-size:15px; }
.arena-roundbar { display:flex; align-items:center; gap:12px; margin-left:auto; }
.arena-roundbar > span { font-size:10px; font-weight:800; letter-spacing:.05em; color:#d3e4e8; white-space:nowrap; }
.arena-roundbar > div { display:flex; align-items:center; gap:7px; }
.arena-roundbar > div > span { display:block; width:6px; height:6px; border-radius:50%; background:#55737e; font-size:0; transition:background .2s,box-shadow .2s,transform .2s; }
.arena-roundbar > div > .is-current { background:#fff; box-shadow:0 0 0 3px #ffffff19; transform:scale(1.15); }
.arena-roundbar > div > .is-ai { background:#94d9f0; }
.arena-roundbar > div > .is-you,.arena-roundbar > div > .is-tie { background:#b7d99e; }
.inbox-arena .arena-motion { background:none; border:0; color:#bdd5de; font-size:10px; font-weight:700; padding:8px 0; min-height:36px; white-space:nowrap; }
.arena-brief { padding:16px 24px; background:#fafcfc; border-bottom:1px solid var(--arena-line); display:grid; grid-template-columns:minmax(0,1fr) 155px; gap:28px; align-items:center; min-height:119px; }
.arena-situation { display:flex; align-items:center; gap:17px; min-width:0; }
.arena-clue-photo { display:block; flex:none; width:58px; height:73px; object-fit:cover; border-radius:8px; border:1px solid #d6e0d7; box-shadow:0 3px 7px #2748350a; }
.arena-situation>div { min-width:0; }
.arena-situation [data-arena-topic] { display:block; font-size:9px; font-weight:850; color:#63878f; margin-bottom:4px; letter-spacing:.04em; }
.inbox-arena .arena-brief h3 { font:850 20px/1.2 Nunito,Arial,sans-serif; margin:0 0 5px; letter-spacing:-.025em; }
.inbox-arena .arena-brief p { margin:0; color:#657b81; font-size:12px; line-height:1.45; }
.arena-clues { display:flex; flex-wrap:wrap; gap:6px 15px; list-style:none; padding:0; margin:9px 0 0; }
.arena-clues>* { display:flex; align-items:center; gap:5px; color:#5e7d73; font-size:10px; font-weight:750; line-height:1.3; }
.arena-clues>*::before { content:''; width:4px; height:4px; flex:none; border-radius:50%; background:#81a897; }
.inbox-arena .arena-goal { display:grid; gap:5px; padding-left:18px; border-left:1px solid #dbe5e1; font-size:10px; line-height:1.4; }
.arena-goal strong { color:#45665c; font-size:15px; font-weight:850; }
.arena-goal small { color:#497361; font-size:10px; font-weight:750; }
.arena-workspace { display:grid; grid-template-columns:minmax(0,.4fr) minmax(0,.6fr); align-items:stretch; }
.arena-preview-stack { min-width:0; border-left:1px solid var(--arena-line); background:#f3f7f5; }
.arena-preview-stack>.arena-preview { border-left:0; }
.arena-play-panel { position:relative; display:grid; min-width:0; height:calc(var(--arena-panel-height) + 40px); padding:20px 24px; }
.arena-play-panel > :is(.arena-choices-pane,.arena-result-pane,.arena-final-pane) { min-width:0; min-height:0; }
.arena-result-pane { display:flex; flex-direction:column; }
.arena-play-panel > [data-active='false'] { display:none; }
.arena-panel-heading { display:flex; justify-content:space-between; align-items:center; gap:12px; height:26px; margin-bottom:16px; }
.arena-panel-heading > strong { color:#284c59; font-size:15px; font-weight:850; }
.arena-panel-heading > span { font-size:10px; color:#809598; white-space:nowrap; }
.arena-decision { border:0; padding:0; margin:0 0 20px; min-width:0; }
.arena-decision:last-child { margin-bottom:0; }
.arena-decision legend { padding:0; margin-bottom:9px; font-size:14px; line-height:1.4; font-weight:850; color:#365863; }
.arena-decision legend>span { display:inline-grid; place-items:center; width:22px; height:22px; border:1px solid #dce5e7; border-radius:6px; margin-right:7px; font-size:9px; color:#80969c; background:#f7fafb; transition:background .18s,border-color .18s; }
.arena-decision[data-complete='true'] legend>span { color:#2d7b9e; background:#e9f5fa; border-color:#c4e2ee; }
.arena-switch { display:grid; grid-template-columns:1fr 1fr; gap:9px; }
.inbox-arena .arena-switch button { position:relative; display:flex; flex-direction:column; justify-content:center; width:100%; min-height:84px; border:1px solid #d6e2e6; border-radius:9px; padding:12px 11px 12px 29px; background:#fff; color:#3b5c68; text-align:left; box-shadow:0 2px 4px #264d5c03; transition:background .16s,border-color .16s,box-shadow .16s,transform .16s; }
.arena-switch button strong { display:block; font-size:13px; line-height:1.4; font-weight:800; }
.arena-switch button>span { display:block; margin-top:6px; font-size:11px; line-height:1.45; color:#7e9298; }
.arena-pick-mark { position:absolute; left:10px; top:15px; width:12px; height:12px; border:1px solid #c0d3da; border-radius:50%; background:#fff; transition:background .16s,border-color .16s; }
.arena-switch button[aria-pressed='true'] .arena-pick-mark { background:#268bb5; border-color:#268bb5; }
.arena-switch button[aria-pressed='true'] .arena-pick-mark::after { content:''; position:absolute; width:6px; height:3px; border-left:1.5px solid white; border-bottom:1.5px solid white; transform:rotate(-45deg); left:2px; top:3px; }
.inbox-arena .arena-switch button[aria-pressed='true'] { background:#edf7fc; color:#246684; border-color:#68b1d0; box-shadow:0 0 0 1px #68b1d014,0 3px 7px #1f7da00a; }
.arena-switch button[aria-pressed='true']>span { color:#65899a; }
.inbox-arena .arena-switch button:hover:not(:disabled) { border-color:#83b8cc; box-shadow:0 3px 9px #1d526a0b; transform:translateY(-1px); }
.inbox-arena .arena-switch button:active:not(:disabled) { transform:translateY(1px); }
.arena-preview { min-width:0; height:calc(var(--arena-panel-height) + 40px); padding:16px 24px; display:flex; flex-direction:column; border-left:1px solid var(--arena-line); background:radial-gradient(ellipse at 50% 35%,#fbfdfc,#f0f5f3); }
.arena-preview .arena-panel-heading { flex:none; height:22px; margin-bottom:6px; }
.arena-email-tabs { display:flex; align-items:center; gap:17px; }
.inbox-arena .arena-email-tabs button { padding:4px 0; border:0; border-bottom:2px solid transparent; background:none; color:#7a8f8d; font-size:13px; line-height:1.4; font-weight:800; }
.inbox-arena .arena-email-tabs button[aria-pressed='true'] { color:#315d51; border-color:#699889; }
.arena-preview-context { flex:none; margin-bottom:9px; }
.arena-send-schedule { display:flex; align-items:center; gap:10px; height:48px; padding:5px 11px; border:1px solid #d5e5e9; border-radius:8px; background:#fafdfe; transition:background .18s,border-color .18s,box-shadow .18s; }
.arena-schedule-icon { display:grid; place-items:center; width:30px; height:30px; flex:none; border-radius:50%; color:#5293ab; background:#eaf3f7; }
.arena-send-schedule>div { min-width:0; display:flex; align-items:baseline; flex-wrap:wrap; column-gap:12px; }
.arena-send-label { color:#6e858e; font-size:11px; font-weight:750; }
.arena-send-time { display:block; color:#315c6c; font-size:17px; font-weight:850; line-height:1.3; letter-spacing:-.015em; }
.arena-preview-feedback { display:flex; align-items:center; gap:6px; min-height:26px; margin:0; padding:5px 2px 0; }
.arena-preview-feedback>span { display:grid; place-items:center; width:20px; height:20px; border-radius:4px; background:#e9f4f9; color:#4482a0; font-size:9px; font-weight:850; flex:none; }
.inbox-arena .arena-preview-feedback>p { margin:0; color:#6b8389; font-size:11px; line-height:1.4; }
.arena-email-viewport { flex:1; min-width:0; min-height:0; }
.inbox-arena .arena-email { display:flex; flex-direction:column; height:100%; margin:0; overflow:visible; border:1px solid #d9dfd6; border-radius:9px; background:#faf9f2; box-shadow:0 2px 4px #213d2e04,0 12px 25px -17px #203f3830; }
.arena-email-envelope { flex:none; padding:9px 17px; border-bottom:1px solid #e0e2d8; background:#fff; border-radius:8px 8px 0 0; }
.arena-email-meta { display:flex; justify-content:space-between; align-items:center; gap:12px; color:#8a9799; font:10px/1.4 Arial,sans-serif; }
.arena-email-meta b { color:#52696d; }
.inbox-arena .arena-email-envelope h3 { color:#324d53; font:700 13px/1.35 Arial,sans-serif; margin:8px 0 0; }
.arena-email-paper { display:grid; flex:1; min-height:0; grid-template-columns:34% minmax(0,1fr); grid-template-rows:58px 1fr; position:relative; }
.arena-email-brand { grid-column:1; grid-row:1; padding:15px 8px 10px; font:20px/1.15 Georgia,serif; letter-spacing:.16em; text-align:center; color:#40543c; }
.arena-email-brand>span { display:block; font:6px/1.5 Arial,sans-serif; letter-spacing:.14em; margin-top:5px; color:#8a8f7e; }
.arena-email-media { grid-column:1; grid-row:2; position:relative; overflow:clip; margin:0 0 15px 15px; border-radius:4px; }
.arena-email .arena-email-photo { display:block; position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }
.arena-email-paper[data-arena-image-layout='landscape'] .arena-email-photo { object-fit:contain!important; }
.arena-email-copy { grid-column:2; grid-row:1/3; padding:17px 19px 13px; display:flex; flex-direction:column; align-items:stretch; justify-content:center; min-width:0; }
.inbox-arena .arena-email-copy h4 { font:400 clamp(25px,2.1vw,30px)/1.1 Georgia,serif; letter-spacing:-.035em; color:#354d35; margin:0 0 15px; }
.arena-email-copy p { font:14px/1.5 Arial,sans-serif; color:#63725c; margin:0 0 12px; }
.arena-email-copy .arena-email-offer { font-size:11px; line-height:1.45; margin:0 0 14px; color:#7b816c; }
.arena-email-cta { display:block; background:#3f6140; border-radius:4px; color:#fff; text-align:center; padding:10px 8px; font:700 12px/1.3 Arial,sans-serif; margin-top:8px; box-shadow:0 1px 1px #24472715; }
.arena-email-secondary { margin-top:7px; color:#6d805b; font:10px/1.4 Arial,sans-serif; text-align:center; text-decoration:underline; }
.arena-email-copy small { margin-top:10px; color:#9a9e8d; font:8px/1.4 Arial,sans-serif; text-align:center; }
.arena-price-preview { display:flex; justify-content:space-between; align-items:center; flex:none; gap:12px; padding-top:10px; font-size:10px; color:#7e9489; min-height:27px; }
.arena-price-preview strong { color:#3b6650; font-size:15px; font-weight:850; margin-left:3px; }
.arena-preview[data-arena-edit-target='message'] [data-arena-draft-headline],.arena-preview[data-arena-edit-target='offer'] [data-arena-draft-offer],.arena-preview[data-arena-edit-target='button'] [data-arena-draft-cta] { outline:2px solid #8bc3d7; outline-offset:5px; border-radius:2px; }
.arena-preview[data-arena-edit-target='timing'] .arena-send-schedule { background:#e9f6ff; border-color:#6ab5d4; box-shadow:0 0 0 2px #6ab5d41a; }
.arena-preview[data-arena-edit-target='timing'] .arena-schedule-icon { background:#2e91b7; color:white; }
.arena-preview[data-arena-edit-target='timing'] .arena-send-time { color:#1e7498; }
.inbox-arena :is(.arena-result-pane,.arena-final-pane) h3 { font:850 28px/1.12 Nunito,Arial,sans-serif; letter-spacing:-.035em; margin:0 0 7px; color:#325b60; }
.arena-result-pane>p:not(.arena-eyebrow),.arena-final-record { margin:0; color:#789087; font-size:12px; line-height:1.5; }
.arena-result-pane[data-winner='you'] h3 { color:#2c8251; }
.arena-score-comparison { display:grid; grid-template-columns:1fr 1fr; gap:10px; margin:14px 0 12px; }
.arena-score-line { display:flex; flex-direction:column; padding:12px; border:1px solid #dce8db; border-radius:9px; background:#f4f8f0; }
.arena-score-line[data-arena-score-side='ai'] { border-color:#d8e5e9; background:#f1f7fa; }
.arena-score-line>div:first-child { display:grid; gap:6px; }
.arena-score-line span { color:#718b73; font-size:10px; font-weight:800; }
.arena-score-line strong { font-size:33px; line-height:1; letter-spacing:-.045em; font-weight:850; font-variant-numeric:tabular-nums; color:#377750; }
.arena-score-line[data-arena-score-side='ai'] strong { color:#3e7b93; }
.arena-score-line small { display:block; color:#82958a; font-size:10px; line-height:1.4; margin:7px 0 9px; }
.arena-result-bar { height:4px; flex:none; margin-top:auto; background:#e2eadb; border-radius:4px; overflow:clip; }
.arena-result-bar>i { display:block; height:100%; width:0; background:#7bae69; border-radius:inherit; transition:width 650ms cubic-bezier(.2,.7,.2,1); }
.arena-score-line[data-arena-score-side='ai'] .arena-result-bar>i { background:#79adc0; }
.arena-review-tabs { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); flex:none; gap:7px; margin-bottom:9px; }
.inbox-arena .arena-review-tabs button { display:flex; align-items:center; gap:8px; min-width:0; min-height:46px; padding:6px 8px; border:1px solid #dfe6e1; border-radius:8px; background:#fff; color:#35564c; text-align:left; transition:background 160ms ease,border-color 160ms ease,box-shadow 160ms ease; }
.arena-review-tabs button>span { display:grid; min-width:0; gap:3px; }
.arena-review-tabs strong { font-size:12px; line-height:1.15; font-weight:850; }
.arena-review-tabs small { font-size:9px; line-height:1.2; color:#61766c; white-space:nowrap; }
.arena-review-tabs i { display:grid; place-items:center; flex:none; width:25px; height:25px; border-radius:50%; background:#739d4b; color:white; font:bold 16px/1 Arial,sans-serif; letter-spacing:-.06em; font-style:normal; }
.arena-review-tabs [data-grade='up'] i { background:#e5ae45; color:#543c12; }
.arena-review-tabs [data-grade='same'] i { background:#7696a1; }
.inbox-arena .arena-review-tabs button[aria-pressed='true'] { background:#f0f6ea; border-color:#9ebd83; box-shadow:inset 0 -2px #83a568; }
.inbox-arena .arena-review-tabs button[data-grade='up'][aria-pressed='true'] { background:#fff8e9; border-color:#d8b775; box-shadow:inset 0 -2px #cfa24b; }
.inbox-arena .arena-review-tabs button:hover { border-color:#869b90; }
.arena-choice-detail { flex:none; }
.inbox-arena .arena-choice-detail>.arena-comparison-context { margin:0 0 7px; color:#6b8277; font-size:9px; font-weight:800; line-height:1.3; text-transform:uppercase; letter-spacing:.045em; }
.arena-option-comparison { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:8px; }
.arena-option-result { min-width:0; display:flex; flex-direction:column; padding:7px 10px; border:1px solid #dee5e1; border-radius:8px; background:#f8faf8; }
.arena-option-result[data-best='true'] { background:#f1f7eb; border-color:#c2d6af; }
.arena-option-heading { display:flex; align-items:center; justify-content:space-between; gap:3px; margin-bottom:5px; font-size:9px; line-height:1.2; color:#708276; }
.arena-option-heading>b { font-size:8px; color:#406724; background:#e1edce; border-radius:3px; padding:2px 4px; }
.arena-option-label { display:block; flex:1; min-height:28px; font-size:12px; line-height:1.25; font-weight:800; color:#355447; }
.arena-option-amount { display:block; margin-top:3px; color:#345d4d; font-size:20px; line-height:1.05; font-weight:850; font-variant-numeric:tabular-nums; letter-spacing:-.035em; }
.arena-option-rate { display:block; margin-top:4px; font-size:10px; line-height:1.2; color:#677e70; font-variant-numeric:tabular-nums; }
.inbox-arena .arena-choice-detail>.arena-comparison-costs { margin:3px 0 6px; font-size:9px; line-height:1.2; color:#718579; }
.arena-choice-impact { display:block; color:#406b2f; font-size:15px; line-height:1.3; font-weight:850; font-variant-numeric:tabular-nums; letter-spacing:-.015em; }
.arena-choice-impact[data-direction='down'],.arena-choice-impact[data-direction='same'] { color:#546d60; }
.inbox-arena .arena-choice-detail>.arena-choice-reason { margin:6px 0 0; color:#657c6f; font-size:12px; line-height:1.45; }
.arena-calculation,.arena-evidence { border:1px solid #d6e4e5; border-radius:9px; background:#f6fafb; margin:12px 0; color:#315764; }
.arena-calculation>summary,.arena-evidence>summary { display:flex; align-items:center; flex-wrap:wrap; gap:5px 10px; min-height:42px; padding:10px 12px; list-style:none; cursor:pointer; font-size:12px; font-weight:800; }
.arena-calculation>summary::-webkit-details-marker,.arena-evidence>summary::-webkit-details-marker { display:none; }
.arena-calculation>summary>i,.arena-evidence>summary>i { margin-left:auto; font-size:18px; font-style:normal; font-weight:500; line-height:1; }
.arena-calculation[open]>summary>i,.arena-evidence[open]>summary>i { transform:rotate(45deg); }
.arena-calculation[open]>summary,.arena-evidence[open]>summary { border-bottom:1px solid #dfebed; }
.arena-evidence [data-arena-evidence-kind] { display:block; margin-top:2px; font-size:10px; font-weight:600; color:#6b828b; }
.arena-calculation-body,.arena-evidence-body { padding:12px; }
.arena-calculation-body p,.arena-evidence-body p { margin:0 0 10px; color:#4d6771; font-size:12px; line-height:1.55; }
.arena-calculation-body [data-arena-you-calculation],.arena-calculation-body [data-arena-ai-calculation] { display:block; margin-top:6px; padding:10px; border:1px solid #dce8e5; border-radius:6px; background:white; font-variant-numeric:tabular-nums; white-space:pre-line; }
.arena-calculation-body [data-arena-ai-calculation] { border-left:3px solid #4595b1; }
.arena-evidence-body [data-arena-evidence-title] { display:block; color:#315764; margin:0 0 8px; font-size:16px; line-height:1.3; font-weight:850; }
.arena-calculation-body a,.arena-evidence-body a { display:inline-block; color:#176f96; font-size:11px; font-weight:750; line-height:1.5; text-decoration:underline; text-underline-offset:3px; padding:4px 0; margin-right:9px; }
.inbox-arena .arena-choice-detail>.arena-discount-math { margin-top:12px; padding:11px 12px; border-left:3px solid #87a86b; border-radius:0 6px 6px 0; background:#f2f7ee; color:#45663d; font-size:12px; line-height:1.5; font-variant-numeric:tabular-nums; }
.arena-discount-math>strong { display:block; margin-bottom:6px; font-size:16px; line-height:1.3; font-weight:850; }
.arena-discount-math>span { display:block; }
/* A paper-like research inset, distinct from the game's blue/green score cards. */
.arena-study { display:grid; grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr); gap:18px 20px; margin:18px 0 12px; padding:22px; border:1px solid #dfd6c0; border-top:3px solid #294d65; border-radius:3px 3px 14px 14px; background:linear-gradient(130deg,#fffdf7,#fbf7ec); box-shadow:0 4px 14px #473b2006; color:#294858; }
.inbox-arena .arena-study-eyebrow { grid-column:1/-1; margin:0; padding-bottom:12px; border-bottom:1px solid #e4ddcb; color:#6c634e; font-size:11px; font-weight:850; line-height:1.4; letter-spacing:.1em; }
.arena-study-heading { grid-column:1; grid-row:2; min-width:0; align-self:center; }
.arena-study-heading>strong { display:block; font-size:clamp(46px,4.5vw,60px); line-height:1; letter-spacing:-.065em; font-weight:900; font-variant-numeric:tabular-nums; color:#234e6c; }
.inbox-arena .arena-study-heading>p { margin:8px 0 0; max-width:210px; font-size:16px; font-weight:800; line-height:1.3; color:#294858; }
.inbox-arena .arena-study-intervention { grid-column:2; grid-row:2; align-self:center; margin:0; padding-left:18px; border-left:1px solid #dcd4c1; color:#344e56; font-size:15px; line-height:1.5; font-weight:700; }
.arena-study-comparison { grid-column:1/-1; grid-row:3; display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1fr); gap:20px; padding:14px 16px; border:1px solid #e4dece; border-radius:8px; background:#fffefb; }
.arena-study-row { min-width:0; }
.arena-study-row>div { display:grid; gap:3px; color:#58676a; font-size:12px; font-weight:700; line-height:1.4; }
.arena-study-row>div>strong { font-size:23px; line-height:1.2; letter-spacing:-.025em; color:#344f5a; font-weight:850; font-variant-numeric:tabular-nums; }
.arena-study-treatment>div>strong { color:#234e6c; }
.arena-study-track { display:block; height:6px; margin-top:8px; overflow:hidden; border-radius:3px; background:#e8e7df; }
.arena-study-track>i { display:block; height:100%; background:#9daaa8; border-radius:inherit; }
.arena-study-treatment .arena-study-track>i { background:#487b92; }
.inbox-arena .arena-study-context { grid-column:1/-1; margin:0; color:#58666a; font-size:13px; line-height:1.55; }
.arena-study-links { grid-column:1/-1; display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:9px 14px; padding-top:14px; border-top:1px solid #e4ddcb; }
.arena-study-links>a { display:inline-block; padding:7px 0; color:#375c72; font-size:12px; line-height:1.4; font-weight:800; text-decoration:underline; text-underline-offset:3px; }
.arena-study-links>[data-arena-study-guide] { order:-1; display:inline-flex; justify-content:center; align-items:center; min-height:40px; padding:10px 14px; border:1px solid #294d65; border-radius:7px; background:#294d65; color:#fffef8; text-decoration:none; }
.arena-study-links>[data-arena-study-guide]:hover { background:#183d55; }
.arena-study-links>a:focus-visible { outline:3px solid #1684ae; outline-offset:4px; }
@media(max-width:600px) {
 .arena-study { grid-template-columns:minmax(0,1fr); gap:15px; padding:19px; }
 .arena-study-heading { grid-column:1; grid-row:2; }
 .arena-study-heading>strong { font-size:56px; }
 .inbox-arena .arena-study-heading>p { max-width:none; }
 .inbox-arena .arena-study-intervention { grid-column:1; grid-row:3; padding:0; border:0; }
 .arena-study-comparison { grid-row:4; gap:14px; padding:13px; }
 .arena-study-links { align-items:stretch; flex-direction:column; gap:5px; }
 .arena-study-links>a { text-align:center; }
}
.arena-calculation summary:focus-visible,.arena-evidence summary:focus-visible,.arena-calculation a:focus-visible,.arena-evidence a:focus-visible { outline:2px solid #1784af; outline-offset:3px; }
.arena-reveal-mask { position:absolute; inset:0; z-index:2; display:flex; align-items:center; justify-content:center; flex-direction:column; text-align:center; background:#fff; border-radius:0; }
.arena-send-envelope { position:relative; display:grid; place-items:center; width:90px; height:76px; color:#428eaa; margin-bottom:23px; }
.arena-send-envelope .arena-send-letter { animation:arena-envelope 650ms cubic-bezier(.2,.7,.2,1) both; }
.arena-send-envelope .arena-send-trails { animation:arena-streak 650ms ease-out both; }
.inbox-arena .arena-reveal-mask h3 { color:#305d6d; font-size:25px; margin:0 0 9px; letter-spacing:-.025em; }
.arena-reveal-mask p { font-size:12px; color:#82989e; margin:0 0 23px; }
.arena-reveal-track { width:148px; height:3px; background:#e8f1f4; border-radius:4px; overflow:clip; }
.arena-reveal-track i { display:block; width:100%; height:100%; background:#68acc5; transform-origin:left; animation:arena-fill 650ms ease-out both; }
.arena-action-row { min-height:70px; display:flex; align-items:center; justify-content:space-between; gap:24px; padding:12px 24px; border-top:1px solid var(--arena-line); background:#fafcfb; }
.arena-action-copy { min-width:0; }
.arena-action-copy strong { color:#3d6166; font-size:13px; font-weight:800; }
.arena-action-copy p { font-size:11px; color:#8a9d9a; margin:4px 0 0; line-height:1.5; }
.inbox-arena .arena-lock { display:inline-flex; align-items:center; justify-content:center; gap:24px; flex:none; min-width:180px; min-height:44px; padding:10px 18px; font-size:13px; font-weight:850; line-height:1.4; color:#fff; border:1px solid #2583a8; background:#2b92b9; border-radius:8px; box-shadow:0 3px 0 #237391; transition:transform .16s,box-shadow .16s,background .16s; }
.inbox-arena .arena-lock:hover:not(:disabled) { background:#2386ae; transform:translateY(-1px); box-shadow:0 4px 0 #237391; }
.inbox-arena .arena-lock:active:not(:disabled) { transform:translateY(2px); box-shadow:0 1px 0 #237391; }
.inbox-arena .arena-lock:disabled { border-color:#dce5dc; background:#edf2e8; box-shadow:0 2px 0 #e0e7dd; color:#a2b29c; }
.arena-match-recap { margin:15px 0; }
.inbox-arena .arena-match-recap table { min-width:0; width:100%; border-collapse:collapse; table-layout:fixed; }
.inbox-arena .arena-match-recap caption { background:none; padding-inline:0; text-align:left; font-size:10px; color:#84998d; padding-bottom:10px; }
.arena-match-recap th:first-child { width:45%; text-align:left; }
.arena-match-recap th,.arena-match-recap td { padding:8px 5px; border-bottom:1px solid #e3ebe4; text-align:right; color:#708b7a; font-size:11px; font-variant-numeric:tabular-nums; }
.arena-match-recap tbody th { font-weight:700; }
.arena-match-recap .is-winner { color:#3b8457; font-weight:850; }
.arena-final-lesson { color:#789581; font-size:12px; line-height:1.5; margin:12px 0; }
.inbox-arena .arena-save-notes { min-height:38px; padding:8px 0; border:0; background:none; color:#4186a0; font-size:12px; font-weight:850; }
.inbox-arena .arena-rules { color:#8a9c9d; font-size:10px; line-height:1.5; margin:16px 0 0; }
.arena-announcement { position:absolute; width:1px; height:1px; overflow:hidden; clip-path:inset(50%); white-space:nowrap; }
.arena-noscript { padding:15px 26px; }
.arena-mobile-tabs { display:none; }
.inbox-arena[data-arena-phase='result'] .arena-result-pane { animation:arena-result 260ms ease-out both; }
.inbox-arena[data-arena-phase='result'] .arena-result-pane[data-winner='you'] h3 { animation:arena-win 380ms cubic-bezier(.2,.8,.3,1.2) both; }
@keyframes arena-fill { from { transform:scaleX(0); } to { transform:scaleX(1); } }
@keyframes arena-result { from { opacity:0; transform:translateY(6px); } to { opacity:1; transform:none; } }
@keyframes arena-win { from { transform:translateY(3px); opacity:.4; } to { transform:translateY(0); opacity:1; } }
@keyframes arena-envelope { 0% { transform:translate(-8px,6px) rotate(-5deg); opacity:0; } 45% { transform:translate(0,-3px) rotate(0); opacity:1; } 100% { transform:translate(5px,-5px); opacity:1; } }
@keyframes arena-streak { from { transform:translateX(0) scaleX(.3); opacity:0; } 40% { opacity:1; } to { transform:translateX(-16px) scaleX(1); opacity:0; } }
.arena-quiet *, .arena-quiet *::before,.arena-quiet *::after { animation:none!important; transition:none!important; }
.conversion-home .arena-embedded { background:transparent; padding:0; }
.conversion-home .arena-embedded>.wrap { width:100%; padding-inline:0; }
.conversion-home .arena-embedded .arena-rules { color:var(--ch-outer-muted); }
.conversion-home .ch-practice-section { padding-block:clamp(38px,4vw,58px) 0; border-top:1px solid var(--ch-line-blue); background:var(--ch-surface-blue); }
.conversion-home .ch-practice-next { display:flex; justify-content:space-between; align-items:center; gap:20px; padding:18px 0 28px; color:var(--ch-outer-muted); }
.conversion-home .ch-practice-next p { margin:0; font-size:13px; }
.conversion-home .ch-practice-next a { color:var(--ch-outer-link); font-size:12px; font-weight:850; }
@media(min-width:1450px) {
 .inbox-arena { --arena-panel-height:480px; }
 .arena-play-panel,.arena-preview { padding-inline:28px; }
 .arena-switch button strong { font-size:13px; }
 .arena-switch button>span { font-size:11px; }
 .arena-email-copy p { font-size:14px; }
 .arena-email-copy .arena-email-offer { font-size:12px; }
}
@media(max-width:1100px) and (min-width:901px) {
 .inbox-arena { --arena-panel-height:488px; }
 .arena-play-panel,.arena-preview { padding-inline:18px; }
 .arena-match-header,.arena-brief,.arena-action-row { padding-inline:18px; }
 .arena-roundbar { gap:12px; }
 .arena-roundbar>div { gap:5px; }
 .arena-brief { gap:16px; grid-template-columns:minmax(0,1fr) 130px; }
 .arena-clue-photo { display:none; }
 .arena-goal strong { font-size:13px; }
 .arena-switch button { padding-inline:26px 8px!important; }
 .arena-switch button strong { font-size:11px; }
 .arena-switch button>span { font-size:10px; }
 .arena-decision legend { font-size:12px; }
 .arena-email-copy { padding-inline:16px; }
 .inbox-arena .arena-email-copy h4 { font-size:25px; }
 .arena-email-meta>span>span { display:none; }
 .arena-score-line { padding:10px; }
 .arena-score-line strong { font-size:28px; }
 .inbox-arena .arena-review-tabs button { gap:5px; padding:7px 5px; }
 .arena-review-tabs strong { font-size:11px; }
 .arena-review-tabs small { font-size:8px; }
}
@media(max-width:900px) {
 .inbox-arena { --arena-panel-height:486px; }
 .inbox-arena .arena-machine { display:flex; flex-direction:column; }
 .arena-match-header { order:0; padding-inline:22px; }
 .arena-brief { order:1; padding:16px 22px; grid-template-columns:1fr; gap:12px; }
 .inbox-arena .arena-goal { display:flex; flex-wrap:wrap; align-items:center; gap:8px 14px; border-left:0; border-top:1px solid #e0e9e6; padding:10px 0 0; }
 .arena-goal strong { font-size:12px; }
 .arena-clues { gap:6px 12px; }
 .arena-mobile-tabs { display:flex; order:2; gap:8px; padding:10px 22px; border-bottom:1px solid #dde9e9; background:#fff; }
 .arena-mobile-tabs button { flex:1; min-height:40px; border:1px solid transparent; border-radius:7px; background:transparent; color:#849ba2; font-size:12px; font-weight:800; }
 .arena-mobile-tabs button[aria-pressed='true'] { border-color:#c9e3ee; background:#eaf6fc; color:#2b7e9f; }
 .arena-workspace { order:3; display:block; }
 .arena-preview-stack { border-left:0; background:white; }
 .arena-play-panel { min-height:calc(var(--arena-panel-height) + 40px); padding:20px 22px; }
 .arena-preview { border-left:0; height:calc(var(--arena-panel-height) + 40px); padding:20px 22px; }
 .inbox-arena:not([data-arena-mobile-view='email']) .arena-preview { display:none; }
 .inbox-arena[data-arena-mobile-view='email'] .arena-play-panel { display:none; }
 .arena-action-row { order:4; padding:12px 22px; }
 .arena-switch button strong { font-size:14px; }
 .arena-switch button>span { font-size:12px; }
 .arena-decision { margin-bottom:20px; }
 .arena-decision legend { font-size:14px; }
 .inbox-arena .arena-switch button { min-height:88px; }
 .arena-email-paper { grid-template-columns:36% minmax(0,1fr); }
 .arena-email-copy p { font-size:14px; }
 .arena-email-copy .arena-email-offer { font-size:12px; }

 .arena-result-pane>p:not(.arena-eyebrow),.arena-final-record { font-size:13px; }
 .arena-intro-actions { align-self:flex-start; }
}
@media(max-width:560px) {
 .inbox-arena { --arena-panel-height:492px; padding-block:20px 26px; }
 .inbox-arena .arena-intro { display:block; margin-bottom:22px; }
 .inbox-arena .arena-intro :is(h1,h2) { font-size:29px; }
 .inbox-arena .arena-intro p:last-child { font-size:13px; line-height:1.5; }
 .arena-intro-actions { display:flex; justify-content:space-between; margin-top:14px; }
 .arena-simulation { font-size:10px; }
 .inbox-arena .arena-machine { border-radius:15px; }
 .arena-match-header { padding:9px 16px; gap:2px 16px; flex-wrap:wrap; }
 .arena-scoreboard { flex:1; }
 .arena-roundbar { order:2; flex-basis:100%; margin-left:0; padding:5px 0; gap:11px; justify-content:space-between; }
 .arena-roundbar>span { font-size:9px; }
 .arena-roundbar>div { gap:5px; }
 .arena-roundbar>div>span { width:6px; height:6px; }
 .inbox-arena .arena-motion { font-size:9px; min-height:36px; }
 .arena-brief { padding:16px; gap:12px; }
 .arena-situation { align-items:flex-start; gap:12px; }
 .arena-clue-photo { width:45px; height:57px; margin-top:2px; }
 .arena-situation [data-arena-topic] { font-size:8px; }
 .inbox-arena .arena-brief h3 { font-size:19px; }
 .inbox-arena .arena-brief p { font-size:11px; }
 .arena-clues { gap:6px 10px; }
 .arena-clues>* { font-size:9px; }
 .inbox-arena .arena-goal { gap:5px 12px; font-size:9px; }
 .arena-goal strong { font-size:11px; }
 .arena-goal small { font-size:9px; }
 .arena-mobile-tabs { padding:9px 16px; }
 .arena-mobile-tabs button { min-height:44px; }
 .arena-play-panel,.arena-preview { padding:18px 16px; min-height:calc(var(--arena-panel-height) + 36px); }
 .arena-panel-heading { margin-bottom:17px; }
 .arena-panel-heading>strong { font-size:14px; }
 .arena-decision { margin-bottom:20px; }
 .arena-decision legend { font-size:12px; margin-bottom:8px; }
 .arena-decision legend>span { width:19px; height:19px; margin-right:5px; font-size:8px; }
 .arena-switch { gap:8px; }
 .inbox-arena .arena-switch button { padding:12px 9px 12px 26px; min-height:92px; }
 .arena-switch button strong { font-size:12px; }
 .arena-switch button>span { font-size:10px; }
 .arena-pick-mark { left:8px; top:15px; width:11px; height:11px; }
 .arena-preview { height:calc(var(--arena-panel-height) + 40px); padding-block:14px; }
 .arena-send-schedule { height:53px; padding:5px 9px; gap:9px; }
 .arena-send-schedule>div { display:grid; gap:2px; }
 .arena-send-label { font-size:9px; }
 .arena-send-time { font-size:14px; line-height:1.25; }
 .arena-preview-feedback { height:34px; padding-top:4px; }
 .inbox-arena .arena-preview-feedback>p { font-size:10px; }
 .arena-panel-heading>span { font-size:9px; }
 .arena-email-tabs { gap:13px; }
 .inbox-arena .arena-email-tabs button { font-size:12px; }
 .arena-email-envelope { padding:11px 12px; }
 .arena-email-meta>span>span { display:none; }
 .inbox-arena .arena-email-envelope h3 { font-size:11px; }
 .arena-email-paper { grid-template-columns:minmax(0,1fr) 64px; grid-template-rows:56px minmax(0,1fr); }
 .arena-email-brand { padding:17px 16px 10px; font-size:18px; letter-spacing:.12em; text-align:left; }
 .arena-email-brand>span { display:block; font-size:5px; margin-top:3px; }
 .arena-email-media { grid-column:2; grid-row:1; margin:9px 12px 0 0; }
 .arena-email-copy { grid-column:1/3; grid-row:2; padding:10px 16px 14px; }
 .inbox-arena .arena-email-copy h4 { font-size:23px; line-height:1.07; margin-bottom:13px; }
 .arena-email-copy p { font-size:12px; line-height:1.5; margin-bottom:12px; }
 .arena-email-copy .arena-email-offer { font-size:10px; margin-bottom:12px; }
 .arena-email-cta { font-size:10px; padding:9px 7px; }
 .arena-email-copy small { font-size:7px; }
 .arena-email-secondary { font-size:9px; }
 .arena-price-preview { font-size:9px; gap:10px; }
 .arena-price-preview>span:first-child { max-width:66%; }
 .arena-price-preview>span:last-child { white-space:nowrap; }
 .arena-price-preview strong { font-size:13px; }
 .inbox-arena :is(.arena-result-pane,.arena-final-pane) h3 { font-size:27px; }
 .arena-score-comparison { gap:9px; margin:14px 0; }
 .arena-score-line { padding:11px; }
 .arena-score-line strong { font-size:29px; }
 .arena-score-line small { font-size:9px; }
 .arena-review-tabs { gap:6px; }
 .inbox-arena .arena-review-tabs button { padding:8px 5px; gap:5px; }
 .arena-review-tabs strong { font-size:11px; }
 .arena-review-tabs small { font-size:8px; }
 .arena-review-tabs i { width:23px; height:23px; font-size:15px; }
 .arena-option-label { font-size:11px; }
 .arena-action-row { flex-wrap:wrap; gap:11px; padding:13px 16px; min-height:119px; }
 .arena-action-copy { flex-basis:100%; }
 .arena-action-copy p { font-size:10px; min-height:15px; }
 .inbox-arena .arena-lock { width:100%; min-height:45px; }
 .inbox-arena .arena-rules { font-size:9px; }
 .conversion-home .ch-practice-next { display:block; }
 .conversion-home .ch-practice-next a { display:block; margin-top:8px; }
}
/* The result replaces the choices, without adding another section below the email. */
.arena-situation [data-arena-topic],.arena-preview [data-arena-preview-state],.arena-preview-feedback,.arena-action-copy p { display:none; }
.inbox-arena .arena-details-open { display:flex; align-items:center; justify-content:space-between; flex:none; gap:12px; width:100%; margin-top:auto; padding:12px 0 0; min-height:40px; border:0; border-top:1px solid #e0e9e5; background:transparent; color:#37778c; font-size:11px; font-weight:800; text-align:left; }
.arena-choice-detail { padding-bottom:8px; }
/* Reserve the same footprint as the choices while making room for both alternatives. */
.inbox-arena .arena-result-pane>h3 { font-size:25px; }
.arena-result-pane>.arena-eyebrow { margin-bottom:6px; }
.arena-score-comparison { margin:7px 0 10px; }
.arena-score-line { padding:7px 10px; }
.arena-score-line>div:first-child { gap:4px; }
.arena-score-line strong { font-size:26px; }
.arena-score-line small { font-size:9px; margin:3px 0 5px; }
.inbox-arena .arena-details-open { min-height:32px; padding-top:8px; }
.arena-details-dialog { width:min(720px,calc(100vw - 32px)); max-height:calc(100svh - 48px); margin:auto; padding:0; border:1px solid #d7e3e4; border-radius:18px; background:#fff; color:var(--arena-ink); box-shadow:0 24px 90px #092c4b40; overflow:auto; overscroll-behavior:contain; }
.arena-details-dialog::backdrop { background:#09243280; }
.arena-details-dialog[open] { animation:arena-result 200ms ease-out; }
.arena-details-heading { display:flex; align-items:center; justify-content:space-between; gap:20px; position:sticky; top:0; z-index:1; padding:20px 24px; border-bottom:1px solid #e0e9e5; background:#fff; }
.arena-details-heading span { display:block; color:#749097; font-size:9px; font-weight:850; letter-spacing:.08em; }
.inbox-arena .arena-details-heading h3 { margin:5px 0 0; font:850 22px/1.2 Nunito,Arial,sans-serif; color:#284e5a; }
.inbox-arena .arena-details-heading button { display:grid; place-items:center; flex:none; width:38px; height:38px; padding:0; border:1px solid #dce7e7; border-radius:50%; background:#f7faf9; color:#42606a; font-size:24px; line-height:1; }
.arena-details-content { padding:8px 24px 20px; }
.arena-details-content .arena-discount-math { padding:14px; border-left:3px solid #87a86b; background:#f2f7ee; color:#45663d; font-size:12px; line-height:1.5; }
.arena-details-content .arena-study { margin-bottom:0; }
.inbox-arena[data-arena-phase='result'] .arena-score-line { animation:arena-result 360ms cubic-bezier(.2,.7,.2,1) both; }
.inbox-arena[data-arena-phase='result'] .arena-score-line[data-arena-score-side='ai'] { animation-delay:60ms; }
.arena-switch button[aria-pressed='true'] .arena-pick-mark { animation:arena-choice-check 200ms ease-out; }
@keyframes arena-choice-check { from { transform:scale(.7); } to { transform:scale(1); } }
@media(max-width:560px) {
 /* Phone views follow their content; a desktop-sized frame must not crop
    long choices or leave a blank panel underneath the finished result. */
 .arena-play-panel,.arena-preview { height:auto; min-height:0; padding:18px 14px; }
 .arena-result-pane,.arena-final-pane,.arena-choices-pane { overflow:visible; }
 .inbox-arena .arena-intro p:last-child { font-size:15px; }
 .arena-intro-actions { align-items:center; flex-wrap:wrap; gap:8px 16px; }
 .arena-simulation { font-size:12px; }
 .arena-open-link { display:inline-flex; align-items:center; min-height:44px; font-size:13px; }
 .inbox-arena .arena-brief p { font-size:13px; line-height:1.5; }
 .arena-clues>* { font-size:11px; line-height:1.4; }
 .inbox-arena .arena-goal { font-size:11px; }
 .arena-goal strong { font-size:13px; }
 .arena-mobile-tabs { padding-inline:14px; }
 .arena-mobile-tabs button { min-height:46px; font-size:14px; }
 .arena-panel-heading { height:auto; min-height:26px; }
 .arena-panel-heading>span { font-size:12px; }
 .arena-decision legend { font-size:14px; line-height:1.45; }
 .arena-decision legend>span { width:22px; height:22px; font-size:10px; }
 .arena-switch { grid-template-columns:repeat(2,minmax(0,1fr)); }
 .inbox-arena .arena-switch button { min-width:0; min-height:108px; padding:12px 10px 12px 29px; }
 .arena-switch button strong { font-size:14px; line-height:1.4; }
 .arena-switch button>span { font-size:12px; line-height:1.45; color:#647e88; }
 .arena-pick-mark { left:9px; top:17px; width:12px; height:12px; }

 /* Keep the sample as an email: sender, small product image, then its
    full message. It expands without a second scrolling viewport. */
 .arena-preview .arena-panel-heading { height:auto; min-height:46px; margin-bottom:10px; }
 .arena-email-tabs { flex:1; gap:8px; }
 .inbox-arena .arena-email-tabs button { min-height:44px; padding:8px 4px; font-size:13px; }
 .arena-send-schedule { height:auto; min-height:58px; }
 .arena-send-label { font-size:11px; }
 .arena-send-time { font-size:16px; line-height:1.35; }
 .arena-email-viewport { flex:none; }
 .inbox-arena .arena-email { height:auto; }
 .arena-email-meta { font-size:11px; }
 .inbox-arena .arena-email-envelope h3 { font-size:13px; line-height:1.4; }
 .arena-email-paper { flex:none; grid-template-columns:minmax(0,1fr) 80px; grid-template-rows:72px auto; }
 .arena-email-brand { align-self:center; padding-block:12px; font-size:21px; }
 .arena-email-brand>span { font-size:7px; }
 .arena-email-media { margin:9px 12px 3px 0; }
 .arena-email-copy { justify-content:flex-start; padding:12px 16px 18px; }
 .inbox-arena .arena-email-copy h4 { font-size:25px; line-height:1.15; }
 .arena-email-copy p { font-size:14px; line-height:1.5; }
 .arena-email-copy .arena-email-offer { font-size:12px; }
 .arena-email-cta { padding:12px 8px; font-size:13px; }
 .arena-email-secondary { font-size:12px; margin-top:10px; }
 .arena-email-copy small { font-size:10px; }
 .arena-price-preview { flex-wrap:wrap; gap:6px 14px; font-size:11px; line-height:1.4; }
 .arena-price-preview>span:first-child { max-width:100%; }
 .arena-price-preview>span:last-child { margin-left:auto; }
 .arena-price-preview strong { font-size:15px; }

 .arena-result-pane>.arena-eyebrow { font-size:11px; line-height:1.5; }
 .arena-score-comparison { grid-template-columns:repeat(2,minmax(0,1fr)); margin:12px 0 14px; }
 .arena-score-line { min-width:0; padding:10px; }
 .arena-score-line span { font-size:11px; }
 .arena-score-line strong { font-size:28px; }
 .arena-score-line small { font-size:11px; line-height:1.45; margin:6px 0; }
 .inbox-arena .arena-review-tabs button { flex-direction:column; align-items:center; justify-content:flex-start; gap:6px; min-height:78px; padding:10px 6px; text-align:center; }
 .arena-review-tabs button>span { width:100%; gap:4px; }
 .arena-review-tabs strong { font-size:13px; line-height:1.25; }
 .arena-review-tabs small { font-size:11px; line-height:1.3; white-space:normal; }
 .arena-review-tabs i { width:24px; height:24px; }
 .inbox-arena .arena-choice-detail>.arena-comparison-context { margin-top:5px; font-size:10px; line-height:1.5; }
 .arena-option-result { padding:10px 9px; }
 .arena-option-heading { flex-wrap:wrap; gap:4px; font-size:11px; line-height:1.35; }
 .arena-option-heading>b { font-size:10px; }
 .arena-option-label { font-size:13px; line-height:1.4; }
 .arena-option-amount { margin-top:8px; font-size:24px; }
 .arena-option-rate { font-size:11px; line-height:1.4; }
 .inbox-arena .arena-choice-detail>.arena-comparison-costs { font-size:11px; line-height:1.4; margin-block:6px 10px; }
 .inbox-arena .arena-choice-detail>.arena-choice-reason { font-size:14px; line-height:1.5; margin-top:8px; }
 .inbox-arena .arena-details-open { min-height:48px; margin-top:12px; padding:12px 0; font-size:14px; }
 .arena-action-row { min-height:0; gap:10px; padding:14px; }
 .arena-action-copy strong { font-size:14px; line-height:1.4; }
 .inbox-arena .arena-lock { min-height:48px; font-size:15px; }
 .inbox-arena .arena-save-notes { min-height:44px; font-size:14px; }
 .inbox-arena .arena-match-recap caption { font-size:12px; line-height:1.4; }
 .arena-match-recap th,.arena-match-recap td { padding:10px 4px; font-size:12px; }
 .arena-final-lesson { font-size:14px; }
 .inbox-arena .arena-rules { font-size:12px; line-height:1.5; }

 /* The dialog is the only scroll area while sources are open. Its close
    button stays visible, and long formulas/attributions can wrap. */
 .arena-details-dialog { width:calc(100vw - 16px); max-width:none; max-height:calc(100svh - 16px); max-height:calc(100dvh - 16px); border-radius:14px; }
 .arena-details-heading { padding:12px; gap:12px; }
 .arena-details-heading>div { min-width:0; }
 .inbox-arena .arena-details-heading h3 { font-size:20px; }
 .inbox-arena .arena-details-heading button { width:44px; height:44px; }
 .arena-details-content { padding:4px 12px 16px; overflow-wrap:anywhere; }
 .arena-calculation>summary,.arena-evidence>summary { min-height:48px; font-size:14px; }
 .arena-evidence [data-arena-evidence-kind] { font-size:12px; line-height:1.4; }
 .arena-calculation-body,.arena-evidence-body { padding:12px; }
 .arena-calculation-body p,.arena-evidence-body p { font-size:14px; line-height:1.55; }
 .arena-calculation-body a,.arena-evidence-body a { display:flex; align-items:center; width:fit-content; max-width:100%; min-height:44px; margin:0; padding:8px 0; font-size:13px; }
 .arena-details-content .arena-discount-math { padding:12px; font-size:14px; }
 .arena-study { padding:16px 14px; gap:14px; }
 .arena-study-heading>strong { font-size:52px; }
 .arena-study-comparison { padding:12px 10px; gap:12px; }
 .arena-study-row>div { font-size:12px; }
 .inbox-arena .arena-study-context { font-size:14px; }
 .arena-study-links>a,.arena-study-links>[data-arena-study-guide] { min-height:44px; font-size:13px; }
}
@media(max-width:380px) {
 /* Two readable answers beat two narrow columns on the smallest phones. */
 .arena-clue-photo { display:none; }
 .arena-switch { grid-template-columns:minmax(0,1fr); }
 .inbox-arena .arena-switch button { min-height:72px; }
 .arena-switch button>span { margin-top:4px; }
 .arena-decision { margin-bottom:18px; }
}
@media(prefers-reduced-motion:reduce) {
 .inbox-arena *, .inbox-arena *::before, .inbox-arena *::after { animation:none!important; transition:none!important; scroll-behavior:auto!important; }
}