:root{--navy:#1E3A5F;--blue:#4E7DA8;--pale:#EEF3F8;--ink:#292A2D;--muted:#68645D;--line:#E3DDCF;--green:#3C8A6B;--green-bg:#EAF5EF;--orange:#E08A3C;--orange-bg:#FFF4E7;--danger:#B85C55;--white:#fff;--shadow:0 16px 42px rgba(30,58,95,.1)}
*{box-sizing:border-box}
html{background:#eef3f7}
body{margin:0;color:var(--ink);background:linear-gradient(180deg,#f7fafc 0,#edf3f7 100%);font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif}
[lang="ja"],ruby{font-family:"BIZ UDGothic","Yu Gothic","Hiragino Kaku Gothic ProN",sans-serif}ruby{ruby-position:over}
button,select,textarea{font:inherit}
button{cursor:pointer}
.study-app{width:min(100%,520px);min-height:100vh;margin:0 auto;background:#f9fbfc;box-shadow:0 0 70px rgba(22,44,66,.08)}
.study-topbar{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:44px 1fr auto;gap:12px;align-items:center;padding:12px 18px;background:rgba(255,255,255,.96);backdrop-filter:blur(16px);border-bottom:1px solid #edf1f4}
.study-topbar>div{display:flex;flex-direction:column;min-width:0}.study-topbar strong{font-size:15px;color:var(--navy)}.study-topbar div span{font-size:11px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.round-button{width:38px;height:38px;border:0;border-radius:50%;background:#edf3f8;color:var(--navy);font-size:26px;line-height:1}
.study-progress{padding:6px 10px;border-radius:999px;background:var(--pale);color:var(--blue);font-size:11px;font-weight:700}
.progress-track{height:3px;background:#e7eef4}.progress-track i{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--blue),#65b7dc);transition:width .35s ease}
.study-main{padding:22px 20px 164px}.study-screen{display:none}.study-screen.active{display:block;animation:screen-in .28s ease both}@keyframes screen-in{from{opacity:0}to{opacity:1}}
.study-notice{position:sticky;top:74px;z-index:15;margin:-12px 0 18px;padding:11px 14px;border-radius:12px;background:#edf6ff;color:#245e8f;font-size:13px}.study-notice.error{background:#fff0ee;color:#a53b33}
.trial-access-card{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center;margin:-10px 0 26px;padding:18px;border:1px solid #f0d2ad;border-radius:18px;background:linear-gradient(135deg,#fffaf3,#fff1df);box-shadow:0 10px 24px rgba(137,83,27,.08)}.trial-access-card[hidden]{display:none}.trial-access-copy span{display:block;margin-bottom:5px;color:#c46920;font-size:9px;font-weight:900;letter-spacing:.14em}.trial-access-copy strong{display:block;color:#7c481e;font-size:15px}.trial-access-copy p{margin:6px 0 0;color:#795f48;font-size:11px;line-height:1.65}.trial-access-card a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 14px;border-radius:12px;background:linear-gradient(135deg,#c46920,#e5963f);color:#fff;text-decoration:none;font-size:12px;font-weight:800;white-space:nowrap;box-shadow:0 7px 16px rgba(196,105,32,.2)}
.setup-hero{position:relative;overflow:hidden;margin:-4px 0 26px;padding:28px 24px;border-radius:24px;background:linear-gradient(135deg,#133a62,#236da8 70%,#55acd2);color:#fff;box-shadow:var(--shadow)}
.setup-hero:after{content:"";position:absolute;width:180px;height:180px;right:-55px;bottom:-85px;border:32px solid rgba(255,255,255,.1);border-radius:50%}
.setup-hero span,.report-title>span,.question-kicker{font-size:11px;font-weight:800;letter-spacing:.15em;text-transform:uppercase}.setup-hero h1{position:relative;z-index:1;margin:10px 0 12px;font-size:28px;line-height:1.34;letter-spacing:.01em}.setup-hero p{position:relative;z-index:1;margin:0;max-width:520px;color:#e7f3fb;font-size:13px;line-height:1.75}
.preselected-program{display:grid;grid-template-columns:1fr auto;align-items:center;gap:2px 14px;margin:-10px 0 24px;padding:14px 16px;border:1px solid #b9d9cb;border-radius:16px;background:#edf7f2}.preselected-program span{grid-column:1;color:#42816f;font-size:10px;font-weight:800}.preselected-program b{grid-column:1;color:var(--navy);font-size:14px}.preselected-program a{grid-column:2;grid-row:1/3;color:#317664;font-size:11px;font-weight:800;text-decoration:none}
.setup-section{margin:0 0 26px}.section-heading{display:flex;gap:12px;align-items:center;margin-bottom:13px}.section-heading>span{display:grid;place-items:center;width:30px;height:30px;border-radius:9px;background:var(--navy);color:#fff;font-size:12px;font-weight:800}.section-heading>div{display:flex;flex-direction:column}.section-heading strong{font-size:15px;color:var(--navy)}.section-heading small{color:var(--muted);font-size:11px}
.program-grid,.mode-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.program-card,.mode-card{min-height:130px;padding:17px;text-align:left;border:1px solid var(--line);border-radius:18px;background:#fff;color:var(--ink);transition:.2s ease}.program-card:hover,.mode-card:hover{border-color:#8bb8da;transform:translateY(-1px)}.program-card.selected,.mode-card.selected{border:2px solid var(--blue);background:var(--pale);box-shadow:0 8px 20px rgba(40,119,190,.12)}.program-card span,.mode-card span{display:block;margin-bottom:8px;color:var(--blue);font-size:10px;font-weight:800;letter-spacing:.08em}.program-card strong,.mode-card strong{display:block;font-size:15px;line-height:1.45}.program-card small,.mode-card small{display:block;margin-top:8px;color:var(--muted);font-size:11px;line-height:1.55}
.engineering-options{padding:18px;border:1px solid #d6e6f2;border-radius:18px;background:#f7fbfe}.field-label{display:block;margin-top:13px;color:var(--navy);font-size:12px;font-weight:700}.field-label select,#questionSelect{display:block;width:100%;margin-top:7px;padding:13px 38px 13px 13px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);outline:none}.field-label select:focus,#questionSelect:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(40,119,190,.1)}
.question-select-section select{margin-top:0}.safety-note{margin:10px 0 20px;padding:15px 17px;border-left:4px solid #5ea4c8;border-radius:12px;background:#f0f7fb}.safety-note strong{color:var(--navy);font-size:13px}.safety-note p{margin:5px 0 0;color:#526579;font-size:12px;line-height:1.65}
.start-button,.submit-answer,.retry-button,.next-button{width:100%;padding:15px 18px;border:0;border-radius:14px;background:linear-gradient(135deg,var(--navy),var(--blue));color:#fff;font-weight:800;box-shadow:0 10px 24px rgba(27,82,128,.2)}
.question-kicker{color:var(--blue)}.study-screen[data-screen="question"]>h2,.answer-stage-title{margin:7px 0 15px;color:var(--navy);font-size:24px;line-height:1.35}.question-card{padding:19px;border:1px solid #d8e5ef;border-radius:24px 24px 24px 8px;background:linear-gradient(145deg,#fbfdff,#edf6fc);box-shadow:0 12px 30px rgba(30,60,90,.08)}.question-meta{display:flex;gap:7px}.question-meta span{padding:5px 9px;border-radius:99px;background:#dcecf7;color:#1e6598;font-size:10px;font-weight:800}.japanese-question{margin:20px 0 18px;font-size:22px;font-weight:700;line-height:2.05;color:#173a5c}.japanese-question ruby{ruby-position:over}.japanese-question rt,.sample-card rt,#materialTags rt{font-size:.48em;color:#3776a6;font-weight:600}
.listen-button{display:flex;align-items:center;gap:11px;width:100%;padding:12px;border:0;border-radius:13px;background:#fff;color:var(--navy);box-shadow:0 5px 18px rgba(45,85,115,.09)}.listen-button>span{display:grid;place-items:center;width:35px;height:35px;border-radius:50%;background:var(--blue);color:#fff}.listen-button div{display:flex;flex-direction:column;text-align:left}.listen-button strong{font-size:13px}.listen-button small{color:var(--muted);font-size:10px}
.intent-card{margin:14px 0;padding:13px 15px;border-radius:15px;background:#f1f6f8}.intent-card span{color:var(--blue);font-size:10px;font-weight:800;letter-spacing:.08em}.intent-card p{margin:5px 0 0;font-size:12px;line-height:1.65}
.question-guide{margin:14px 0;padding:14px 16px;border:1px solid #f0d1aa;border-radius:15px;background:linear-gradient(135deg,#fffaf2,#fff2e3)}.question-guide span{display:block;color:#b65e1b;font-size:10px;font-weight:800;letter-spacing:.08em}.question-guide ol{margin:7px 0 0;padding-left:21px}.question-guide li{margin:5px 0;color:#644f3c;font-size:12px;line-height:1.55}.question-guide[hidden]{display:none}
.answer-card{padding:18px;border:1px solid var(--line);border-radius:18px}.answer-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.answer-head strong{color:var(--navy)}.answer-head span{color:var(--muted);font-size:11px}.answer-card textarea{width:100%;min-height:170px;padding:14px;border:1px solid #d9e3ea;border-radius:13px;resize:vertical;color:var(--ink);font-size:16px;line-height:1.75;outline:none}.answer-card textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(40,119,190,.1)}.answer-card textarea::placeholder{font-family:var(--cp-font-zh,"PingFang SC","Microsoft YaHei",sans-serif);color:#7a8796}.answer-tools{display:flex;justify-content:space-between;gap:10px;margin-top:10px}.answer-tools button{padding:9px 13px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--navy);font-size:12px;font-weight:700}.answer-tools button.listening{border-color:#e36e65;background:#fff0ee;color:#b43b32}.answer-tools button.listening span{color:#e1473c}.record-status{margin-top:9px;color:var(--muted);font-size:10px;line-height:1.55}.submit-answer{margin-top:17px}.skip-question{display:block;margin:14px auto 0;padding:8px 15px;border:0;background:transparent;color:var(--muted);font-size:12px}
.feedback-hero{display:flex;align-items:center;gap:18px;padding:20px;border-radius:22px;background:linear-gradient(135deg,#153b61,#236fa9);color:#fff}.score-circle{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:none;width:98px;height:98px;border:7px solid rgba(255,255,255,.2);border-radius:50%;background:rgba(255,255,255,.09)}.score-circle strong{font-size:34px;line-height:1}.score-circle span{font-size:10px;color:#d9ecf8}.feedback-hero>div:last-child>span{font-size:10px;letter-spacing:.12em;color:#a9d3eb}.feedback-hero h2{margin:5px 0;font-size:21px}.feedback-hero p{margin:0;color:#d9e9f4;font-size:11px}.feedback-source{width:max-content;margin:12px 0 16px auto;padding:5px 9px;border-radius:99px;background:#eef4f8;color:#637487;font-size:10px}
.metric-card,.feedback-card,.evidence-card,.sample-card,.material-card{margin-top:14px;padding:18px;border:1px solid var(--line);border-radius:17px;background:#fff}.metric-card h3,.feedback-card h3,.evidence-card h3,.material-card h3{margin:0 0 13px;color:var(--navy);font-size:14px}.metric-row{display:grid;grid-template-columns:minmax(118px,150px) 1fr 54px;gap:10px;align-items:center;margin:10px 0}.metric-row span{font-size:11px}.metric-bar{height:8px;overflow:hidden;border-radius:99px;background:#e8edf1}.metric-bar i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#3b8bc3,#62bdd4)}.metric-row b{text-align:right;color:var(--blue);font-size:12px}.feedback-card ul,.feedback-card ol{margin:0;padding-left:20px}.feedback-card li{margin:8px 0;font-size:13px;line-height:1.65}.feedback-card.good{background:var(--green-bg);border-color:#c9e9de}.feedback-card.good h3{color:var(--green)}.feedback-card.improve{background:var(--orange-bg);border-color:#f0d9c0}.feedback-card.improve h3{color:var(--orange)}
.evidence-card p{font-size:13px;line-height:1.7}.evidence-card div,.material-card>div:last-child,#reportMaterials{display:flex;flex-wrap:wrap;gap:7px}.evidence-card div span,.material-card div span,#reportMaterials span{padding:6px 9px;border-radius:8px;background:#eef4f8;color:#41627e;font-size:11px}.material-link{display:flex;flex:1 1 230px;flex-direction:column;gap:3px;padding:10px 12px;border:1px solid #d3e3ef;border-radius:11px;background:#fff;color:var(--navy);text-decoration:none}.material-link strong{font-size:12px;line-height:1.45}.material-link small{color:var(--muted);font-size:10px;line-height:1.45}.material-link:hover{border-color:var(--blue);background:#f9fcff}.sample-card summary{cursor:pointer;color:var(--navy);font-weight:800;font-size:13px}.sample-card>div{margin-top:15px;font-size:16px;line-height:2}.sample-card>p{margin:12px 0 0;color:var(--muted);font-size:11px;line-height:1.6}.material-card{background:#f3f7fa}.material-card>div:first-child span{padding:0;background:none;color:var(--blue);font-size:9px;font-weight:800;letter-spacing:.12em}.material-card h3{margin-top:3px}.feedback-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:18px}.retry-button{background:#fff;color:var(--navy);border:1px solid #b7cada;box-shadow:none}.next-button{background:linear-gradient(135deg,var(--navy),var(--blue))}
.report-title>span{color:var(--blue)}.report-title h1{margin:6px 0 8px;color:var(--navy);font-size:28px}.report-title p{margin:0;color:var(--muted);font-size:12px}.report-score{margin:20px 0;padding:24px;border-radius:22px;background:linear-gradient(135deg,#173e64,#2b82bd);color:#fff;text-align:center}.report-score strong{font-size:58px;line-height:1}.report-score span{color:#c5e0f0}.report-score p{margin:7px 0 0;font-weight:700}.priority-item{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:9px 0;padding:11px;border-radius:11px;background:#fff}.priority-item div{min-width:0}.priority-item strong{display:block;color:var(--navy);font-size:12px}.priority-item span{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--muted);font-size:10px}.priority-item b{color:var(--orange);font-size:14px}.report-note{margin:16px 0;color:var(--muted);font-size:11px;line-height:1.7}
.answer-tools button:disabled{cursor:wait;opacity:.65}.record-status.active{color:#b43b32;font-weight:700}#voiceInputBtn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:11px 16px;border:0;background:linear-gradient(135deg,#175483,#2389c7);color:#fff;box-shadow:0 6px 15px rgba(31,111,164,.22)}#voiceInputBtn:hover{transform:translateY(-1px);box-shadow:0 8px 18px rgba(31,111,164,.28)}#voiceInputBtn .mic-icon{font-size:17px;line-height:1}#voiceInputBtn.listening{border:0;background:linear-gradient(135deg,#a9342e,#df5b50);color:#fff;box-shadow:0 6px 15px rgba(190,61,52,.22)}#voiceInputBtn.listening .mic-icon{color:#fff}.voice-recording-panel{margin:14px 0 4px;padding:18px;text-align:center;border-radius:16px;background:#fff5f3;border:1px solid #f1d0cb}.voice-recording-panel[hidden],.voice-preview[hidden]{display:none}.voice-record-orb{position:relative;display:grid;place-items:center;width:92px;height:92px;margin:0 auto 10px;border-radius:50%;background:#c94840;color:#fff;box-shadow:0 10px 24px rgba(190,61,52,.26)}.voice-record-orb:before{content:"";position:absolute;inset:-1px;border:2px solid rgba(201,72,64,.55);border-radius:50%;animation:voice-ripple 1.45s infinite}.voice-record-mic{font-size:26px;transform:translateY(-8px)}.voice-record-orb b{position:absolute;bottom:17px;font-size:13px;letter-spacing:.06em}.voice-recording-panel>strong{display:block;color:#b43b32;font-size:14px}.voice-recording-panel>small{display:block;margin-top:3px;color:#8f645f;font-size:10px}@keyframes voice-ripple{70%{transform:scale(1.23);opacity:0}100%{opacity:0}}.voice-preview{margin:14px 0 4px;padding:13px;border-radius:14px;background:#f2f8fb;border:1px solid #d3e5ef}.voice-preview>span{display:block;margin-bottom:8px;color:var(--green);font-size:11px;font-weight:800}.voice-preview audio{width:100%;height:38px}.voice-preview button{margin-top:8px;padding:7px 12px;border:1px solid #c6d8e4;border-radius:9px;background:#fff;color:var(--navy);font-size:11px;font-weight:700}
.answer-flow{display:flex;align-items:center;justify-content:center;gap:7px;margin:16px 0 0;color:#82909c;font-size:10px;font-weight:800}.answer-flow span{padding:6px 9px;border-radius:999px;background:#eef2f4}.answer-flow span.current{background:#dceef8;color:#176a9c}.answer-flow i{font-style:normal;color:#aeb8bf}.question-recap{margin-bottom:14px;padding:13px 15px;border:1px solid #d8e5ef;border-radius:17px;background:#fff}.question-recap>span{display:block;color:var(--blue);font-size:9px;font-weight:800;letter-spacing:.08em}.question-recap>div{margin-top:7px;color:var(--navy);font-size:16px;font-weight:700;line-height:1.8}.question-recap rt{font-size:.5em;color:#3776a6}.question-recap button{margin-top:7px;padding:7px 10px;border:0;border-radius:9px;background:#edf5fb;color:var(--blue);font-size:10px;font-weight:800}.answer-stage-card{min-height:330px;padding:22px 18px 17px;border:1px solid #dbe4e9;border-radius:26px;background:#fff;box-shadow:0 12px 30px rgba(30,60,90,.07);text-align:center}.voice-idle-panel{padding:13px 0 10px}.voice-idle-panel[hidden]{display:none}.voice-idle-orb{display:grid;place-items:center;width:152px;height:152px;margin:0 auto 18px;border:1px solid #dbe8ef;border-radius:50%;background:#f5f9fb;box-shadow:inset 0 0 0 17px #fff}.voice-idle-orb span{display:grid;place-items:center;width:86px;height:86px;border-radius:50%;background:linear-gradient(145deg,var(--navy),var(--blue));font-size:34px;box-shadow:0 14px 28px rgba(31,93,139,.22)}.voice-idle-panel>strong{display:block;color:var(--navy);font-size:15px}.voice-idle-panel>small{display:block;margin-top:5px;color:var(--muted);font-size:10px}.voice-recording-panel{margin:0;padding:14px;text-align:center;border-radius:20px;background:#fff5f3;border:1px solid #f1d0cb}.voice-recording-panel[hidden],.voice-preview[hidden]{display:none}.voice-record-orb{position:relative;display:grid;place-items:center;width:152px;height:152px;margin:0 auto 15px;border-radius:50%;background:#c94840;color:#fff;box-shadow:0 14px 30px rgba(190,61,52,.28)}.voice-record-orb:before{content:"";position:absolute;inset:-1px;border:2px solid rgba(201,72,64,.55);border-radius:50%;animation:voice-ripple 1.45s infinite}.voice-record-mic{font-size:38px;transform:translateY(-13px)}.voice-record-orb b{position:absolute;bottom:28px;font-size:20px;letter-spacing:.06em}.voice-recording-panel>strong{display:block;color:#b43b32;font-size:16px}.voice-recording-panel>small{display:block;margin-top:3px;color:#8f645f;font-size:11px}@keyframes voice-ripple{70%{transform:scale(1.16);opacity:0}100%{opacity:0}}.voice-preview{margin:0;padding:16px;border-radius:18px;background:#f2f8fb;border:1px solid #d3e5ef;text-align:left}.voice-preview>span{display:block;margin-bottom:10px;color:var(--green);font-size:12px;font-weight:800}.voice-preview audio{width:100%;height:42px}.voice-preview button{margin-top:11px;padding:9px 13px;border:1px solid #c6d8e4;border-radius:10px;background:#fff;color:var(--navy);font-size:11px;font-weight:700}.answer-stage-card .record-status{margin:14px auto 0;max-width:350px;text-align:center}.transcript-lead{margin:-5px 0 14px;color:var(--muted);font-size:12px;line-height:1.7}.transcript-card{margin-top:15px;padding:17px;background:#fff;box-shadow:0 12px 30px rgba(30,60,90,.06)}.transcript-card textarea{min-height:245px}.transcript-tools{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:10px;color:var(--muted);font-size:10px}.transcript-tools button{padding:8px 12px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--navy);font-weight:700}.study-action-dock{position:fixed;z-index:30;left:50%;bottom:0;transform:translateX(-50%);width:min(100%,520px);padding:18px 20px calc(14px + env(safe-area-inset-bottom));background:linear-gradient(180deg,rgba(249,251,252,0),rgba(249,251,252,.97) 24%,#f9fbfc 42%)}.study-primary-action{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;min-height:54px;border:0;border-radius:16px;background:linear-gradient(135deg,var(--navy),var(--blue));color:#fff;font-size:14px;font-weight:800;box-shadow:0 10px 24px rgba(27,82,128,.22)}.study-primary-action.listening{background:linear-gradient(135deg,#a9342e,#df5b50);box-shadow:0 10px 24px rgba(190,61,52,.22)}.study-primary-action:disabled{opacity:.58;cursor:wait}.study-secondary-action{display:block;width:100%;margin-top:7px;padding:6px;border:0;background:transparent;color:var(--muted);font-size:11px;font-weight:700}.cp-mini-nav-enabled .study-action-dock{bottom:calc(var(--cp-mini-nav-height) + env(safe-area-inset-bottom));padding-bottom:11px}.cp-mini-nav-enabled .study-main{padding-bottom:238px}.cp-mini-nav-enabled .study-app{min-height:calc(100vh - var(--cp-mini-nav-height))}
.voice-privacy{max-width:350px;margin:11px auto 0;padding:9px 11px;border-radius:11px;background:#eef7f4;color:#3f6961;font-size:9px;line-height:1.6;text-align:left}
@media(max-width:560px){.study-main{padding:19px 15px 164px}.setup-hero{padding:24px 19px}.setup-hero h1{font-size:24px}.trial-access-card{grid-template-columns:1fr}.trial-access-card a{width:100%}.program-grid,.mode-grid{grid-template-columns:1fr}.program-card,.mode-card{min-height:auto}.japanese-question{font-size:20px}.metric-row{grid-template-columns:118px 1fr 50px;gap:7px}.feedback-actions{grid-template-columns:1fr}.study-topbar{padding-left:12px;padding-right:12px}.study-progress{font-size:10px}.study-action-dock{padding-left:15px;padding-right:15px}.cp-mini-nav-enabled .study-main{padding-bottom:238px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}
.recording-guidance{display:flex;align-items:flex-start;gap:9px;margin:0 0 12px;padding:11px 12px;border:1px solid rgba(225,139,60,.3);border-radius:13px;background:#fff4e7;color:#75502e;font-size:10px;line-height:1.6;text-align:left}.recording-guidance strong{flex:0 0 auto;color:#a95918;font-size:10px;white-space:nowrap}.recording-guidance span{min-width:0}