/* =========================================================
   ui01-lab.css｜ui01「UI/UX 概論」專用互動（前綴 u1-）
   設計語言參考 dvcd/cute-uiux-lab 互動圖鑑：每張卡一個主題色、
   「玩法一句話」→ 真的能按能拖 → 底下只留一句重點，不打分數。
   只在 .uu-page 之下生效。
   ========================================================= */

/* ---------- 共用卡片 ---------- */
.u1-cards { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px; }
.u1-card { --pc: var(--brand); display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 18px; background: var(--paper); overflow: hidden; position: relative; box-shadow: 0 18px 36px -32px rgba(16,40,44,.5); }
.u1-card::before { content: ""; height: 5px; background: var(--pc); }
.u1-card.wide { grid-column: 1 / -1; }
.u1-ch { padding: 16px 20px 6px; }
.u1-ch .top { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.u1-ch .no { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 9px; background: var(--pc); color: #fff; font: 900 12px/1 var(--f-mono); flex: none; }
.u1-ch h3 { font-size: 18px; font-weight: 900; margin: 0; flex: 1; }
.u1-ch .tag { font: 800 10px/1 var(--f-mono); letter-spacing: .06em; padding: 5px 8px; border-radius: 20px; background: color-mix(in srgb, var(--pc) 14%, white); color: var(--pc); white-space: nowrap; }
.u1-ch p { margin: 0; font-size: 14px; line-height: 1.7; color: var(--ink-2); }
.u1-ch p b { color: var(--ink); }
.u1-demo { margin: 10px 20px 0; border-radius: 14px; background-color: #F6F8F9; background-image: radial-gradient(#DDE4E7 1px, transparent 1.2px); background-size: 14px 14px; border: 1px solid var(--line-2); padding: 16px; min-height: 250px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; position: relative; }
.u1-ctl { display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: center; justify-content: center; width: 100%; font-size: 13px; font-weight: 700; color: var(--ink-2); }
.u1-ctl label { display: inline-flex; align-items: center; gap: 8px; margin: 0; }
.u1-ctl input[type=range] { width: 130px; accent-color: var(--pc); }
.u1-out { font: 800 12px/1 var(--f-mono); padding: 6px 10px; border-radius: 20px; background: var(--ink); color: #fff; white-space: nowrap; }
.u1-mini { border: 1.5px solid var(--line); background: var(--paper); color: var(--ink-2); font: 700 12.5px/1 var(--f-body); padding: 8px 12px; border-radius: 9px; cursor: pointer; transition: all .2s; }
.u1-mini:hover { border-color: var(--pc); color: var(--ink); }
.u1-mini.on { background: var(--pc); border-color: var(--pc); color: #fff; }
.u1-foot { margin: 0; padding: 12px 20px 16px; font-size: 14px; line-height: 1.7; color: var(--ink-2); }
.u1-foot b { color: var(--pc); }
.u1-foot.hide { visibility: hidden; }
.u1-seen { position: absolute; right: 10px; top: 10px; font: 800 10px/1 var(--f-mono); color: #fff; background: var(--good); padding: 4px 7px; border-radius: 12px; opacity: 0; transform: scale(.7); transition: all .3s var(--ease); }
.u1-card.is-seen .u1-seen { opacity: 1; transform: none; }
@media (max-width: 991px) { .u1-cards { grid-template-columns: 1fr; } }

/* ---------- 訂票挑戰 ---------- */
.u1t { border: 1px solid var(--line); border-radius: 18px; overflow: hidden; background: var(--paper); }
.u1t-bar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; padding: 10px 14px; background: var(--canvas); border-bottom: 1px solid var(--line-2); }
.u1t-bar .sp { flex: 1; }
.u1t-body { display: grid; grid-template-columns: 340px minmax(0,1fr); gap: 0; }
.u1t-stage { padding: 20px; background-color: #F1F4F6; background-image: radial-gradient(#D8E0E4 1px, transparent 1.2px); background-size: 14px 14px; display: grid; place-items: center; position: relative; }
.u1t-phone { position: relative; width: 262px; height: 520px; border-radius: 38px; background: #0B0C0E; padding: 11px; box-shadow: 0 34px 60px -30px rgba(0,0,0,.7), inset 0 0 0 2px #2E3036; }
.u1t-scr { position: relative; width: 100%; height: 100%; border-radius: 28px; overflow: hidden; background: #fff; display: flex; flex-direction: column; font-family: var(--f-body); user-select: none; }
.u1t-side { padding: 22px 26px; display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.u1t-task { padding: 14px 16px; border-radius: 14px; background: var(--ink); color: #fff; }
.u1t-task small { display: block; font: 800 10.5px/1 var(--f-mono); letter-spacing: .08em; color: #8FE6E1; margin-bottom: 6px; }
.u1t-task b { font-size: 17px; line-height: 1.5; display: block; }
.u1t-stats { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 8px; }
.u1t-stats > div { padding: 10px 6px; border-radius: 12px; background: var(--canvas); text-align: center; }
.u1t-stats b { display: block; font: 900 20px/1.1 var(--f-mono); color: var(--ink); }
.u1t-stats small { font-size: 11.5px; color: var(--ink-3); font-weight: 700; }
.u1t-res { display: grid; gap: 6px; }
.u1t-res .r { display: grid; grid-template-columns: 74px repeat(4, minmax(0,1fr)); gap: 8px; align-items: center; font-size: 13px; padding: 8px 10px; border-radius: 10px; background: var(--canvas); }
.u1t-res .r.h { background: none; font: 800 10.5px/1 var(--f-mono); color: var(--ink-3); padding: 0 10px; }
.u1t-res .r b { font-weight: 800; }
.u1t-res .r.a b:first-child { color: var(--warn); } .u1t-res .r.b b:first-child { color: var(--good); }
.u1t-say { padding: 14px 16px; border-radius: 14px; background: var(--brand-soft); color: var(--ink); font-size: 14.5px; line-height: 1.75; }
.u1t-hint { font-size: 13.5px; color: var(--ink-3); line-height: 1.7; margin: 0; }
.u1t-tag { position: absolute; z-index: 30; font: 800 9.5px/1.25 var(--f-body); padding: 4px 7px; border-radius: 8px; color: #fff; pointer-events: none; max-width: 150px; box-shadow: 0 6px 14px -6px rgba(0,0,0,.5); }
.u1t-tag.ui { background: #067A76; } .u1t-tag.ux { background: #6350C4; }
.u1t-legend { display: none; gap: 10px; font-size: 12.5px; font-weight: 700; color: var(--ink-2); }
.u1t.xray .u1t-legend { display: flex; }
.u1t-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 5px; }
.u1t-scr .u1t-tag { display: none; } .u1t.xray .u1t-scr .u1t-tag { display: block; }
/* 版本 A：好看但難用 */
.ta { background: #12141A; color: #6C7280; height: 100%; display: flex; flex-direction: column; font-size: 11px; }
.ta .hd { padding: 22px 14px 8px; font: 900 15px/1 var(--f-display); color: #4B5160; letter-spacing: .2em; }
.ta .poster { height: 150px; margin: 4px 14px; border-radius: 12px; background: linear-gradient(135deg, #2A2438, #162B3A 60%, #1F2A44); position: relative; overflow: hidden; }
.ta .poster::after { content: "STELLAR"; position: absolute; left: 12px; bottom: 10px; font: 900 22px/1 var(--f-display); color: rgba(255,255,255,.12); letter-spacing: .15em; }
.ta .sub { padding: 10px 14px 4px; font-size: 10px; color: #4F5563; }
.ta .chips { display: flex; gap: 6px; padding: 0 14px; }
.ta .chip { height: 24px; padding: 0 8px; border: 1px solid #272B34; border-radius: 6px; font-size: 10.5px; color: #5C6270; display: grid; place-items: center; cursor: pointer; }
.ta .chip.on { border-color: #3A4152; color: #7B8292; }
.ta .next { position: absolute; right: 12px; top: 16px; font-size: 10px; color: #4A5060; cursor: pointer; padding: 2px; }
.ta .ad { position: absolute; inset: 120px 18px auto; padding: 14px; border-radius: 12px; background: linear-gradient(135deg, #F5A623, #EE4A85); color: #fff; font: 800 14px/1.4 var(--f-body); z-index: 20; box-shadow: 0 20px 40px -10px rgba(0,0,0,.7); }
.ta .ad span { display: block; font-size: 11px; font-weight: 600; opacity: .9; }
.ta .ad .x { position: absolute; right: 4px; top: 4px; width: 16px; height: 16px; border-radius: 50%; background: rgba(0,0,0,.25); font-size: 10px; display: grid; place-items: center; cursor: pointer; }
.ta .qty { display: flex; align-items: center; gap: 10px; padding: 14px; color: #6C7280; }
.ta .qty b { width: 22px; text-align: center; color: #7B8292; font-size: 14px; }
.ta .qty .pm { width: 22px; height: 22px; border-radius: 5px; border: 1px solid #272B34; display: grid; place-items: center; cursor: pointer; color: #5C6270; }
.ta .err { position: absolute; top: 2px; left: 0; right: 0; text-align: center; font-size: 9.5px; color: #8A4B4B; padding: 2px; }
.ta .agree { display: flex; gap: 6px; align-items: center; padding: 8px 14px; font-size: 9.5px; color: #4F5563; }
.ta .agree i { width: 12px; height: 12px; border: 1px solid #3A4152; border-radius: 3px; display: inline-grid; place-items: center; font-style: normal; font-size: 9px; cursor: pointer; flex: none; }
/* 版本 B：好用 */
.tb { height: 100%; display: flex; flex-direction: column; background: #fff; color: var(--ink); }
.tb .top { padding: 24px 16px 8px; }
.tb .top small { font: 800 10.5px/1 var(--f-mono); color: #067A76; letter-spacing: .06em; }
.tb .top h5 { margin: 4px 0 0; font: 900 19px/1.3 var(--f-display); }
.tb .poster { height: 84px; margin: 4px 16px 8px; border-radius: 12px; background: linear-gradient(135deg, #6350C4, #0ABAB5); }
.tb .list { display: grid; gap: 8px; padding: 0 16px; }
.tb .chip { height: 48px; border-radius: 12px; border: 2px solid #DDE5E7; display: flex; align-items: center; justify-content: space-between; padding: 0 14px; font: 800 16px/1 var(--f-body); cursor: pointer; background: #fff; }
.tb .chip small { font-weight: 600; font-size: 12px; color: #4B5563; }
.tb .chip.on { border-color: #067A76; background: #DFF6F4; color: #064C49; }
.tb .qty { display: flex; align-items: center; justify-content: center; gap: 22px; padding: 26px 16px 10px; }
.tb .qty b { font: 900 38px/1 var(--f-mono); min-width: 50px; text-align: center; }
.tb .qty .pm { width: 52px; height: 52px; border-radius: 50%; background: #F1F4F5; display: grid; place-items: center; font-size: 26px; font-weight: 700; cursor: pointer; border: 2px solid #DDE5E7; }
.tb .sum { margin: 6px 16px; padding: 10px 12px; border-radius: 12px; background: #F1F4F5; font-size: 13.5px; font-weight: 700; display: flex; justify-content: space-between; }
.tb .agree { display: flex; gap: 12px; align-items: center; margin: 10px 16px; padding: 0 12px; height: 48px; border-radius: 12px; border: 2px solid #DDE5E7; font-size: 14px; font-weight: 700; cursor: pointer; }
.tb .agree i { width: 24px; height: 24px; border-radius: 7px; border: 2px solid #8A939C; display: grid; place-items: center; font-style: normal; color: #fff; font-size: 14px; flex: none; }
.tb .agree.on { border-color: #067A76; background: #DFF6F4; } .tb .agree.on i { background: #067A76; border-color: #067A76; }
.tb .cta { margin: auto 16px 10px; height: 50px; border-radius: 14px; background: #067A76; color: #fff; font: 800 16px/1 var(--f-body); display: grid; place-items: center; cursor: pointer; }
.tb .cta.dis { background: #E3E8EB; color: #5F6B76; }
.tb .hint { text-align: center; font-size: 11.5px; color: #4B5563; margin: -2px 0 12px; min-height: 1.4em; }
.tb .steps { display: flex; gap: 4px; padding: 0 16px; margin-bottom: 10px; }
.tb .steps i { flex: 1; height: 5px; border-radius: 4px; background: #DDE5E7; } .tb .steps i.on { background: #067A76; }
.tdone { height: 100%; display: grid; place-content: center; text-align: center; gap: 8px; padding: 20px; background: #fff; color: var(--ink); }
.tdone .tk { padding: 16px; border-radius: 16px; background: linear-gradient(135deg, #6350C4, #0ABAB5); color: #fff; font-weight: 800; line-height: 1.7; }
@media (max-width: 991px) { .u1t-body { grid-template-columns: 1fr; } .u1t-res .r { grid-template-columns: 60px repeat(4, minmax(0,1fr)); font-size: 12px; } }

/* ---------- 01 找碴 ---------- */
.u1f { position: relative; width: 250px; background: #fff; border-radius: 16px; padding: 14px 16px 16px; box-shadow: 0 16px 30px -22px rgba(0,0,0,.5); font-family: var(--f-body); }
.u1f h4 { font: 900 15px/1.2 var(--f-display); margin: 0 0 10px; }
.u1f .sp { display: block; width: 100%; text-align: left; background: none; border: 1.5px dashed transparent; padding: 3px; margin: 0 0 5px; border-radius: 8px; cursor: pointer; font-family: inherit; position: relative; }
.u1f .sp:hover { border-color: #CBD3D8; }
.u1f .sp.found { border-color: #E5484D; background: rgba(229,72,77,.06); }
.u1f .sp .pin { position: absolute; right: -8px; top: -8px; width: 20px; height: 20px; border-radius: 50%; background: #E5484D; color: #fff; font: 900 10px/20px var(--f-mono); text-align: center; display: none; }
.u1f .sp.found .pin { display: block; }
.u1f .in { height: 30px; border: 1px solid #DDE5E7; border-radius: 7px; padding: 0 8px; font-size: 12px; display: flex; align-items: center; color: #B7BEC4; }
.u1f .lab { font-size: 11.5px; font-weight: 700; color: #3B434B; margin-bottom: 3px; display: block; }
.u1f .lab.ghost { color: #D3D8DC; font-weight: 400; font-size: 9.5px; }
.u1f .eye { margin-left: auto; width: 14px; height: 14px; font-size: 11px; color: #9AA3AB; }
.u1f .rule { font-size: 9.5px; color: #D5DADD; margin-top: 2px; }
.u1f .errl { font-size: 9px; color: #E5A0A0; margin: 0 0 4px; }
.u1f .btn { height: 34px; border-radius: 8px; background: #C9CED2; color: #fff; font: 700 12px/34px var(--f-body); text-align: center; }
.u1f.fixed .lab.ghost { color: #3B434B; font-weight: 700; font-size: 11.5px; }
.u1f.fixed .in { color: #4B5563; }
.u1f.fixed .rule { color: #4B5563; font-size: 11px; }
.u1f.fixed .eye { width: 28px; height: 28px; font-size: 16px; color: #3B434B; }
.u1f.fixed .errl { color: #C2322E; font-size: 11px; }
.u1f.fixed .btn { background: #067A76; }
.u1-list { list-style: none; margin: 0; padding: 0; width: 100%; display: grid; gap: 6px; font-size: 13px; }
.u1-list li { display: flex; gap: 8px; padding: 7px 10px; border-radius: 9px; background: #fff; border: 1px solid var(--line-2); color: var(--ink-2); line-height: 1.5; }
.u1-list li.off { color: var(--ink-3); border-style: dashed; background: transparent; }
.u1-list li b { color: #E5484D; flex: none; font-family: var(--f-mono); }

/* ---------- 02 微互動 ---------- */
.u1m { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; width: 100%; max-width: 360px; }
.u1m > div { background: #fff; border-radius: 14px; padding: 16px 10px 10px; display: grid; justify-items: center; gap: 8px; box-shadow: 0 10px 24px -20px rgba(0,0,0,.4); }
.u1m small { font-size: 11.5px; color: var(--ink-3); font-weight: 700; text-align: center; }
.u1m .like { position: relative; border: 0; background: #F4F4F6; border-radius: 30px; height: 46px; padding: 0 18px; display: inline-flex; align-items: center; gap: 8px; font: 800 15px/1 var(--f-body); color: #6B7280; cursor: pointer; }
.u1m.fb .like { transition: transform .15s, background .2s, color .2s; }
.u1m.fb .like:active { transform: scale(.88); }
.u1m .like.on { color: #E5484D; }
.u1m.fb .like.on { background: #FDECEC; }
.u1m.fb .like.pop i { animation: u1pop .45s var(--ease); }
@keyframes u1pop { 0% { transform: scale(1); } 40% { transform: scale(1.5) rotate(-12deg); } 100% { transform: scale(1); } }
.u1m .burst { position: absolute; inset: 0; pointer-events: none; }
.u1m .burst s { position: absolute; left: 24px; top: 22px; width: 6px; height: 6px; border-radius: 50%; background: #E5484D; opacity: 0; text-decoration: none; }
.u1m.fb .burst.go s { animation: u1burst .6s ease-out forwards; }
@keyframes u1burst { 0% { opacity: 1; transform: translate(0,0); } 100% { opacity: 0; transform: translate(var(--dx), var(--dy)); } }
.u1m .tg { width: 58px; height: 32px; border-radius: 20px; border: 0; background: #C9CED2; position: relative; cursor: pointer; padding: 0; }
.u1m .tg::after { content: ""; position: absolute; left: 3px; top: 3px; width: 26px; height: 26px; border-radius: 50%; background: #fff; box-shadow: 0 2px 5px rgba(0,0,0,.3); }
.u1m.fb .tg { transition: background .25s; } .u1m.fb .tg::after { transition: left .25s var(--ease), width .15s; }
.u1m.fb .tg:active::after { width: 32px; }
.u1m .tg.on { background: #12805C; } .u1m .tg.on::after { left: 29px; } .u1m.fb .tg.on:active::after { left: 23px; }
.u1m .send { width: 120px; height: 42px; border-radius: 12px; border: 0; background: #0C8CE9; color: #fff; font: 800 13.5px/1 var(--f-body); cursor: pointer; position: relative; overflow: hidden; }
.u1m.fb .send { transition: background .25s, transform .12s; } .u1m.fb .send:active { transform: scale(.95); }
.u1m .send.ld { background: #78B8EE; } .u1m .send.ok { background: #12805C; }
.u1m .toast { position: absolute; left: 50%; bottom: -34px; transform: translateX(-50%); background: var(--ink); color: #fff; font-size: 12px; font-weight: 700; padding: 6px 12px; border-radius: 10px; opacity: 0; white-space: nowrap; }
.u1m.fb .toast.on { animation: u1toast 1.6s ease; }
@keyframes u1toast { 0%, 100% { opacity: 0; transform: translate(-50%, 8px); } 12%, 80% { opacity: 1; transform: translate(-50%, 0); } }

/* ---------- 03 格式塔 ---------- */
.u1g { display: flex; align-items: center; gap: var(--gap, 14px); transition: gap .15s; }
.u1g .grp { display: grid; grid-template-columns: repeat(2, 30px); gap: 6px; }
.u1g .grp i { width: 30px; height: 30px; border-radius: 8px; background: #6350C4; display: block; }
.u1g.sim .grp:last-child i { background: #EE4A85; border-radius: 50%; }
.u1-say { margin: 0; font-size: 14px; font-weight: 700; color: var(--ink); min-height: 1.6em; text-align: center; }

/* ---------- 04 資訊層級 ---------- */
.u1h { position: relative; width: 236px; background: #fff; border-radius: 16px; padding: 12px; display: grid; gap: calc(6px + var(--k) * 4px); box-shadow: 0 16px 30px -22px rgba(0,0,0,.5); font-family: var(--f-body); transition: filter .3s; }
.u1h.squint { filter: blur(2.6px); }
.u1h .im { height: 70px; border-radius: 10px; background: linear-gradient(135deg, #BFEDEB, #D9D2F6); }
.u1h .t { font-weight: calc(500 + var(--k) * 300); font-size: calc(13px + var(--k) * 7px); line-height: 1.3; color: #1B1F22; transition: all .2s; }
.u1h .p { font-weight: calc(500 + var(--k) * 400); font-size: calc(13px + var(--k) * 9px); color: color-mix(in srgb, #1B1F22, #E5484D calc(var(--k) * 100%)); transition: all .2s; }
.u1h .d { font-size: 12px; color: color-mix(in srgb, #5B636C, #C9CED2 calc(var(--k) * 100%)); line-height: 1.5; transition: all .2s; }
.u1h .b { height: 36px; border-radius: 10px; display: grid; place-items: center; font: 800 13px/1 var(--f-body); background: color-mix(in srgb, #EEF1F3, #6350C4 calc(var(--k) * 100%)); color: color-mix(in srgb, #5B636C, #fff calc(var(--k) * 100%)); transition: all .2s; }

/* ---------- 05 Hick ---------- */
.u1k { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 6px; width: 100%; max-width: 340px; }
.u1k button { border: 1.5px solid var(--line); background: #fff; border-radius: 9px; padding: 8px 4px; font: 700 12px/1.2 var(--f-body); color: var(--ink-2); cursor: pointer; transition: all .15s; }
.u1k button:hover { border-color: var(--pc); }
.u1k button.tgt { border-color: #12805C; background: #E5F6EE; }
.u1-q { margin: 0; font-size: 14px; font-weight: 700; color: var(--ink); text-align: center; }
.u1k-log { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; font: 700 11.5px/1 var(--f-mono); }
.u1k-log span { padding: 5px 8px; border-radius: 12px; background: #fff; border: 1px solid var(--line); }

/* ---------- 06 Fitts ---------- */
.u1ft { position: relative; width: 100%; max-width: 360px; height: 220px; background: #fff; border: 1.5px dashed var(--line); border-radius: 14px; overflow: hidden; touch-action: manipulation; }
.u1ft .go { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); }
.u1ft .dot { position: absolute; border-radius: 50%; background: #0C8CE9; border: 0; cursor: pointer; padding: 0; box-shadow: 0 0 0 4px rgba(12,140,233,.18); }
.u1ft .hud { position: absolute; left: 10px; top: 8px; font: 800 11px/1 var(--f-mono); color: var(--ink-3); }
.u1ft-res { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.u1ft-res span { font: 800 12px/1 var(--f-mono); padding: 7px 10px; border-radius: 12px; background: #fff; border: 1px solid var(--line); }

/* ---------- 07 旅程 ---------- */
.u1j { width: 100%; max-width: 420px; }
.u1j svg { width: 100%; height: auto; display: block; touch-action: none; }
.u1j-info { margin-top: 8px; padding: 10px 12px; border-radius: 12px; background: #fff; border: 1px solid var(--line-2); font-size: 13.5px; line-height: 1.65; color: var(--ink-2); min-height: 4.6em; }
.u1j-info b { color: var(--ink); }

/* ---------- 08 色彩 ---------- */
.u1c { width: 100%; max-width: 300px; padding: 14px; border-radius: 16px; background: #fff; font-family: var(--f-body); transition: filter .3s, background .3s, color .3s; box-shadow: 0 14px 30px -22px rgba(0,0,0,.5); }
.u1c.dark { background: #14171A; color: #E8ECEF; }
.u1c h5 { margin: 0 0 8px; font: 900 15px/1.3 var(--f-display); }
.u1c .row { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 8px; }
.u1c .st { display: inline-flex; align-items: center; gap: 5px; padding: 6px 10px; border-radius: 20px; color: #fff; font: 700 12px/1 var(--f-body); }
.u1c .st.ok { background: #1E9E6B; } .u1c .st.err { background: #D93A2E; } .u1c .st.warn { background: #E0A300; color: #1B1F22; }
.u1c .bars { display: grid; gap: 6px; }
.u1c .bars div { height: 14px; border-radius: 4px; }
.u1c .txt { font-size: 12.5px; line-height: 1.6; margin: 8px 0 0; color: var(--cc, #8A939C); }
.u1c.dark .txt { color: var(--cc, #6B7280); }
.u1c .lg { display: flex; gap: 10px; font-size: 11.5px; margin-top: 6px; font-weight: 700; }
.u1c .lg i { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 4px; }
.u1-seg { display: flex; flex-wrap: wrap; gap: 4px; justify-content: center; }

/* ---------- MVP／UI-UX 分類（對照老師，不計分） ---------- */
.u1s { display: grid; gap: 8px; }
.u1s .r { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 8px 14px; align-items: center; padding: 11px 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--paper); }
.u1s .q { font-size: 14.5px; line-height: 1.55; color: var(--ink); font-weight: 600; }
.u1s .o { display: flex; gap: 4px; flex-wrap: wrap; }
.u1s .o button { border: 1.5px solid var(--line); background: var(--paper); border-radius: 8px; padding: 6px 11px; font: 700 12.5px/1 var(--f-body); color: var(--ink-2); cursor: pointer; transition: all .15s; }
.u1s .o button:hover { border-color: var(--brand); }
.u1s .o button.on { background: var(--ink); border-color: var(--ink); color: #fff; }
.u1s .tc { grid-column: 1 / -1; display: none; padding: 9px 12px; border-radius: 10px; background: var(--agent-soft); font-size: 13.5px; line-height: 1.65; color: var(--ink); }
.u1s .tc b { color: var(--agent-strong); }
.u1s.reveal .tc { display: block; }
.u1s .r.same { border-color: #BDE8D3; }
.u1s .r.diff { border-color: #E5D9A8; background: #FFFCEB; }
.u1s-act { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 10px; }
.u1s-sum { margin-top: 10px; padding: 14px 16px; border-radius: 12px; background: var(--tool); color: #E6E8EB; font-size: 14px; line-height: 1.8; display: none; white-space: pre-wrap; }
.u1s-sum.on { display: block; }
@media (max-width: 767px) { .u1s .r { grid-template-columns: 1fr; } }

/* ---------- 回顧：足跡 ---------- */
.u1r { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 10px; }
.u1r a { display: flex; gap: 10px; align-items: center; padding: 12px 14px; border-radius: 12px; border: 1.5px dashed var(--line); background: var(--paper); color: var(--ink-2); font-size: 14px; font-weight: 700; text-decoration: none; transition: all .2s; }
.u1r a i { width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; background: var(--line-2); color: var(--ink-3); font-size: 13px; flex: none; font-style: normal; }
.u1r a.on { border-style: solid; border-color: #BDE8D3; background: var(--good-soft); color: #0F5F40; }
.u1r a.on i { background: var(--good); color: #fff; }
.u1r a:hover { border-color: var(--brand); }
.u1-note-area { width: 100%; min-height: 96px; border-radius: 12px; border: 1.5px solid var(--line); padding: 12px 14px; font: 15px/1.7 var(--f-body); resize: vertical; outline: none; }
.u1-note-area:focus { border-color: var(--brand); }
@media (max-width: 991px) { .u1r { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 575px) { .u1r { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .u1m.fb .burst.go s, .u1m.fb .like.pop i { animation: none; } }
.u1f .sp.eye { display: inline-block; width: auto; border: 0; }
.u1f .sp.rule { font-size: 9.5px; color: #D5DADD; }
.u1f.fixed .sp.rule { color: #4B5563; font-size: 11px; }
.u1f .sp.eye .pin { right: -14px; top: -12px; }
.u1f .in { position: relative; }

.u1-card .u1-seen { top: auto; bottom: 14px; right: 18px; }
.u1-foot { padding-right: 90px; }