/* 参考对话界面的轻盈感：冰蓝与浅紫渐变、白色悬浮卡片、少量明亮强调色。 */
:root{
  --outer:#DDECFB;
  --paper:#F9FAFF;
  --ink:#2D2B3C;
  --muted:#66677C;
  --green:#7257CA;
  --green-dark:#5641A5;
  --sage:#F0EDFF;
  --line:#E6E6F2;
  --gold:#F5A48D;
  --shadow:0 14px 35px rgba(82,75,142,.09);
}
body{background:var(--outer)}
.shell,.welcome{background:linear-gradient(160deg,#F1F8FF 0%,#F6EFFB 38%,#FBFAFF 67%,#F0F7FF 100%);box-shadow:0 0 70px rgba(76,83,152,.1)}
.mobile-header{background:rgba(255,255,255,.83);border-bottom-color:rgba(224,224,243,.8);backdrop-filter:blur(20px)}
.app-brand .brandmark,.welcome-brand .brandmark{background:linear-gradient(140deg,#7C69DC,#7C7BE4 55%,#56BEEA);box-shadow:0 5px 15px rgba(114,87,202,.18)}
.header-user{background:#F0F0FC;color:#5B4C92}
.mobile-nav{background:rgba(255,255,255,.89);border-top-color:#E8E7F5;box-shadow:0 -9px 25px rgba(79,81,146,.07);backdrop-filter:blur(22px)}
.mobile-nav button{color:#85879B}
.mobile-nav button.active,.back,.text-link{color:#6952BD}
.eyebrow,.welcome-copy .eyebrow{color:#6958B2}
.welcome-left{display:flex;flex-direction:column;height:auto}
.welcome-brand{order:0}
.welcome-copy{order:1;margin-top:22px}
.welcome-copy h1{margin:0}
.welcome-copy p{display:block;max-width:none;margin:9px 0 0;font-size:12px;line-height:1.5;color:#66677C}
.welcome-left>.cover-image{order:2;position:relative;inset:auto;top:auto;width:calc(100% + 40px);height:170px;margin:18px -20px 0;flex:none}
.primary,.today-card .primary,.chat-form button,.demo-play{background:linear-gradient(110deg,#7657D0,#8067E5);color:#fff;box-shadow:0 7px 17px rgba(102,75,195,.16)}
.primary:hover,.today-card .primary:hover,.demo-play:hover,.chat-form button:hover{background:linear-gradient(110deg,#6246BE,#7458D1)}
.secondary,.muted-button{border-color:#DAD6EF;color:#6250AD;background:#fff}
.secondary:hover,.muted-button:hover{background:#F5F2FF}
.statuspill{background:#F0EDFF;color:#6754AE}
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline-color:#7F6CDB}

/* 首页：柔和渐变承接真实商务照片，核心行动使用清楚的白卡。 */
.dashboard-head{position:relative;padding:20px 19px 18px;border-radius:24px;overflow:hidden;background:linear-gradient(135deg,#F9F4FD 0%,#F5EBF8 55%,#ECF5FF 100%);box-shadow:0 9px 25px rgba(93,83,148,.07)}
.dashboard-head:before{content:"";position:absolute;right:-22px;top:-28px;width:205px;height:190px;border-radius:50%;background:radial-gradient(circle,rgba(208,200,255,.46) 0%,rgba(208,200,255,0) 72%);pointer-events:none}
.dashboard-head>*{position:relative;z-index:1}
.dashboard-head h1{font-size:22px;line-height:1.38;margin:8px 0 6px}
.dashboard-head p{font-size:12px;line-height:1.5}
.scene-banner{border:2px solid rgba(255,255,255,.92);border-radius:20px;box-shadow:0 12px 25px rgba(64,83,151,.12)}
.scene-banner:after{background:linear-gradient(transparent,rgba(37,35,68,.59))}
.today-card{position:relative;overflow:hidden;background:linear-gradient(140deg,#FCF9FF 0%,#F7F0FB 61%,#EBF5FF 100%);border:1px solid #F0ECF8;border-radius:22px;box-shadow:var(--shadow)}
.today-card:before{content:"";position:absolute;right:-55px;top:-75px;width:190px;height:190px;border-radius:50%;background:radial-gradient(circle,rgba(169,149,250,.23),rgba(169,149,250,0) 70%);pointer-events:none}
.today-card>*{position:relative}
.today-card-kicker,.today-card-kicker span:last-child{color:#6B5AAB}
.today-card h2{color:#29283B}
.today-card p{color:#68687A}
.today-flow{color:#686A83}
.today-flow span:nth-child(1) svg{color:#7157C8;background:#F0EDFF;border-color:#E1DBF7}
.today-flow span:nth-child(2) svg{color:#4B9FD4;background:#EAF6FF;border-color:#D8ECFB}
.today-flow span:nth-child(3) svg{color:#D8788C;background:#FFF0F3;border-color:#F8DCE5}
.today-flow span:nth-child(4) svg{color:#6F9DCD;background:#ECF4FF;border-color:#DDE9FA}
.journey-progress,.pathway-summary,.panel,.scene-card,.level,.scene-search,.ability-grid,.growth-stats,.form-card{background:#fff;border-color:#EAE9F4;box-shadow:0 7px 22px rgba(76,81,139,.045)}
.journey-progress,.pathway-summary,.panel,.scene-card,.form-card{border-radius:18px}
.progress-track,.meter{background:#EDEBFA}
.progress-track span,.meter span{background:linear-gradient(90deg,#7C66DB,#62B9E9)}
.chapter-preview button{background:#F2F0FF;border-color:#E7E2F8;color:#514394;border-radius:16px;box-shadow:0 5px 14px rgba(73,70,134,.04)}
.chapter-preview button:nth-child(2){background:#ECF7FF;border-color:#DBEFFB}
.chapter-preview button:nth-child(3){background:#FFF2F1;border-color:#FAE5E4}
.chapter-preview button:nth-child(4){background:#F6F0FF;border-color:#E9E0F8}
.chapter-preview button:nth-child(5){background:#ECF5FF;border-color:#DDEBFA}
.chapter-preview button{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:0;padding:12px;min-height:94px}
.chapter-preview button:nth-child(5){min-height:80px}
.chapter-preview button>span{line-height:1.2}
.chapter-preview strong{display:flex;align-items:baseline;gap:5px;flex:none;margin-top:13px;white-space:nowrap;line-height:1.25}
.chapter-preview .chapter-layer{font-size:16px;font-weight:700}
.chapter-preview .chapter-tagline{font-size:13px;font-weight:600}
.chapter-preview .chapter-tagline:before{content:'·';margin-right:5px}
.chapter-preview svg{position:absolute;top:12px;right:12px;width:16px;height:16px}

/* 方法课与场景库：交互处用紫蓝，高密度正文保持白底。 */
.chapter-filters button.active,.scene-filters button.active{background:#7257CA;border-color:#7257CA}
.chapter-heading>span,.level-num{background:#EEEAFE;color:#6652B5}
.chapter-heading h2{display:flex;align-items:baseline;gap:5px;white-space:nowrap;color:#514394}
.chapter-heading .chapter-layer{font-size:16px;font-weight:700}
.chapter-heading .chapter-tagline{font-size:13px;font-weight:600}
.chapter-heading .chapter-tagline:before{content:'·';margin-right:5px}
.level{color:#342F41}
.level .name{color:#342F41}
.level.current{background:#F7F5FF;border-color:#BBAFEB}
.level.done{background:#F8FAFF}
.scene-group{background:#F0EDFF;color:#6755AD}
.lesson-kicker{color:#6B57B6}
.flow-steps{background:#EFECFB}
.flow-steps button.active{color:#5C48A8;box-shadow:0 4px 12px rgba(73,62,130,.09)}
.method-slide{background:#fff;border-color:#E7E5F3}
.method-slide-top,.method-slide-top .eyebrow,.method-divider{color:#6D5AAE}
.method-keywords{background:linear-gradient(110deg,#765DCE,#7385E0);box-shadow:0 8px 17px rgba(92,81,180,.1)}
.method-keywords span{background:#fff;color:#554399}
.method-keywords small{color:#8575B5}
.method-scene{background:#F4F4FF;color:#595A77}
.method-step-card{background:#FCFCFF;border-color:#ECEAF7}
.method-step-card b{color:#8071D2}
.method-more{background:#FCFCFF;border-color:#E9E9F5}
.method-more summary{color:#5F4BAD}
.method-more-body{color:#44445B}
.quiz-options button{border-color:#E7E6F2}
.quiz-options button:hover{background:#F3F0FF;border-color:#B7ABEA}
.scene-quote{background:#F3F3FF;border-left-color:#7B68D2}
.answer-compare>div,.feedback-item{background:#F8F8FE;border-color:#E8E7F4}
.reference-panel{background:#FCFCFF;border-top-color:#E8E8F5}

/* 对话和示范：白色气泡与渐变背景取自参考图的空间感。 */
.demo-panel,.demo-theater{border-color:#E7E5F3}
.demo-theater-head{background:linear-gradient(110deg,#6556AF,#7E73CE)}
.demo-stage{background:linear-gradient(160deg,#F6EEFF 0%,#F8F3FB 50%,#EDF8FF 100%)}
.demo-dialogue,.bubble{background:#fff;box-shadow:0 6px 18px rgba(70,69,131,.08)}
.demo-progress span{background:#E9E7F5}
.demo-progress span.active,.demo-progress span.seen{background:#7B65D4}
.message.user .bubble{background:linear-gradient(125deg,#765CD3,#796DE0);box-shadow:0 7px 18px rgba(96,76,181,.16)}
.chat{background:linear-gradient(155deg,#F8F8FF,#F3F7FF);border-color:#E8E7F5;border-radius:20px}
.chat-top,.chat-form{background:rgba(255,255,255,.88)}
.practice-restart{display:block;margin:-5px 0 10px auto;padding:3px 0;border:0;background:transparent;color:#6952BD;font:inherit;font-size:12px;font-weight:600}
.scene-restart{margin-top:8px}
.chat-form button.voice{background:#F1EDFF;color:#765DCE}
.score{background:linear-gradient(140deg,#7D62D5,#668FE5)}
.hero{background:linear-gradient(120deg,#6D58BC,#7B79DC 70%,#63B5E5)}
.hero p,.hero .eyebrow{color:#F3F0FF}
.hero .primary{background:#fff;color:#5847A0}

@media(max-width:360px){.dashboard-head h1{font-size:21px}.today-card{padding:19px}}

/* 手机浏览器的标题栏会占掉可视高度；首屏保留完整的学习入口。 */
@media(max-width:480px){
  .mobile-header{height:56px;padding:0 14px}
  .app-brand strong{font-size:14px}
  .mobile-nav{height:calc(64px + env(safe-area-inset-bottom,0px));padding-top:4px}
  .mobile-nav button{min-height:46px;gap:2px}
  .mobile-nav svg{width:19px;height:19px}
  .mobile-nav small{font-size:11px}
  .main{padding:12px 12px calc(92px + env(safe-area-inset-bottom,0px))}
  .chapter-filters,.scene-filters{margin-left:-12px;margin-right:-12px;padding-left:12px;padding-right:12px}
  .dashboard-head{padding:14px 16px 13px;margin:0 0 10px;border-radius:18px}
  .dashboard-head h1{font-size:20px;line-height:1.34;margin:6px 0 4px}
  .dashboard-head p{font-size:12px;line-height:1.45}
  .scene-banner{height:92px;margin-bottom:10px;border-radius:17px}
  .scene-banner span{font-size:11px}
  .today-card{padding:17px 16px 16px;border-radius:19px}
  .today-card h2{font-size:19px;line-height:1.35;margin:10px 0 6px}
  .today-card p{font-size:12px;line-height:1.55;min-height:0}
  .today-card .primary{margin-top:14px;min-height:44px}
  .today-flow{padding:11px 0 8px}
}

/* 方法课判断页：手机上让步骤、选项和情境说明保持可读。 */
@media(max-width:480px){
  .flow-steps button{min-height:55px;font-size:13px}
  .flow-steps button span{font-size:14px}
  .lesson-panel .eyebrow,.lesson-scene .eyebrow{font-size:13px}
  .lesson-panel h2{font-size:19px;line-height:1.5}
  .quiz-options button{min-height:58px;padding:13px 14px;font-size:16px;line-height:1.55}
  .lesson-scene h3{font-size:17px;line-height:1.55}
  .lesson-scene p{font-size:15px;line-height:1.65}
}
@media(max-width:360px){
  .dashboard-head h1{font-size:19px}
  .today-card h2{font-size:18px}
}
@media(max-width:340px){
  .chapter-preview button{padding:11px 10px}
  .chapter-preview .chapter-layer{font-size:15px}
  .chapter-preview .chapter-tagline{font-size:12px}
}

/* 完成页的下一课入口。 */
.stats .next-lesson{cursor:pointer;border-color:#CFC5F5;background:#F6F3FF;color:#5846A8}
.stats .next-lesson strong{font-family:inherit;font-size:17px;font-weight:700;color:#5846A8}
.stats .next-lesson span{font-size:11px;font-weight:700;color:#5846A8}
.stats .next-lesson:hover{background:#EDE8FF;border-color:#AFA0EB}
.stats .next-lesson:focus-visible{outline:3px solid #8C78DB;outline-offset:2px}
/* 能力自检：分数、缺口和具体动作在手机上也能一眼分辨。 */
.ability-top .ability-score{min-width:48px;text-align:center;padding:5px 8px;border-radius:999px;font-size:12px;font-weight:700;color:#6556A6;background:#F0EDFC}
.ability-top .ability-score.strong,.ability-top .ability-score.good{color:#256C5E;background:#E8F6F0}
.ability-top .ability-score.practice{color:#8A5F16;background:#FFF1D9}
.ability-top .ability-score.focus{color:#A84454;background:#FDECEF}
.ability-top .ability-score.untested{color:#817C92;background:#F2F0F5}
.ability-grid .ability p{font-size:12px;line-height:1.45;color:#6D6881;margin-top:7px;overflow-wrap:anywhere}
.ability-grid .ability .meter{height:6px;margin-top:9px;background:#EEEAF7}
.ability-grid .ability .meter span{background:#7A65D6}
.ability-summary{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap;padding:11px 13px;margin:14px 0;border-radius:11px;background:#F4F1FD;color:#554798}
.ability-summary small{font-size:12px;color:#706989}
.assessment-summary{align-items:flex-start;flex-direction:column}
.assessment-summary small{font-size:13px;line-height:1.55}
.ability-criteria{display:grid;gap:9px;margin:13px 0}
.ability-criteria>div{display:flex;align-items:flex-start;gap:9px;font-size:14px;line-height:1.5}
.criterion-mark{flex:none;display:grid;place-items:center;width:21px;height:21px;border-radius:50%;font-size:13px}
.criterion-mark.done{color:#226F62;background:#E4F5EE}
.criterion-mark.todo{color:#8C7897;background:#F1ECF5}
.ability-check-list{display:grid;gap:10px;margin:16px 0}
.ability-check{display:flex;align-items:flex-start;gap:12px;padding:13px;border:1px solid #E6E1F3;border-radius:12px;background:#FAF9FF;line-height:1.5;cursor:pointer}
.ability-check input{flex:none;width:20px;height:20px;margin:2px 0 0;accent-color:#765FD0}
.ability-check span{font-size:14px}
.ability-check b{display:inline-block;margin-right:8px;color:#765FD0}
.ability-check-live{font-size:13px;color:#65599A;margin:0 0 14px}
.ability-course-list{display:grid;gap:8px}
.ability-course{display:flex;align-items:center;gap:10px;width:100%;padding:13px 14px;border:1px solid #E5E0F2;border-radius:12px;background:#fff;color:var(--ink);font:inherit;text-align:left;cursor:pointer}
.ability-course span{flex:1;font-size:13px;line-height:1.45}
.ability-course b{font-size:12px;color:#6956AF;white-space:nowrap}
.ability-course svg{width:16px;height:16px;color:#7868BD}
.scene-review-label{display:inline-block;margin-left:8px;color:#6857A7;font-size:11px;font-weight:700}
.records-entry{margin:0 0 20px;display:inline-flex;align-items:center;gap:8px}
.records-entry svg,.record-link svg{width:17px;height:17px}
.records-list{display:grid;gap:12px;padding-bottom:24px}
.record-card{width:100%;border:1px solid #e5e1f4;border-radius:18px;background:#fff;padding:18px 20px;text-align:left;display:grid;gap:8px;color:#24233a;box-shadow:0 8px 22px rgba(71,58,132,.05);cursor:pointer}
.record-card:hover{border-color:#8e77d8;transform:translateY(-1px)}
.record-card strong{font-size:17px;line-height:1.45}
.record-meta{font-size:12px;color:#7464b7}
.record-summary{font-size:14px;color:#77738a;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
.record-link{display:inline-flex;align-items:center;gap:5px;color:#6955bc;font-size:13px;font-weight:700}
.coaching-feedback{margin:18px 0;padding:18px;border:1px solid #ddd6f5;border-radius:17px;background:#f8f6ff}
.coaching-feedback-head{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:12px}
.coaching-feedback-head strong{font-size:16px;color:#29233e}
.coaching-feedback-head small{font-size:12px;color:#796caa}
.coaching-points{display:grid;gap:10px}
.coaching-points>div{border-radius:12px;background:#fff;padding:12px 14px}
.coaching-points small{display:block;color:#6653b4;font-weight:700;margin-bottom:5px}
.coaching-points p{margin:0;line-height:1.65;overflow-wrap:anywhere}
.reference-answer{margin-top:18px}
.turn-feedback{width:100%}
.turn-feedback .coaching-feedback{margin:2px 0 8px}