/* 测绘课堂实训辅助系统 · 网页端样式 */
:root{font-family:Inter,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;color:#1d2b40;background:#f5f7fa;font-synthesis:none;--blue:#0066cc;--navy:#143458;--muted:#64748b;--line:#e3e8ef;--red:#bc3040;--green:#17704b}
*{box-sizing:border-box}body{margin:0;font-size:16px;line-height:1.6}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #74b5fc;outline-offset:3px}button{transition:background .15s,color .15s,box-shadow .15s}a{color:var(--blue);text-decoration:none}h1,h2,h3,p{margin:0}h1{font-size:1.9rem;line-height:1.4;letter-spacing:-.03em}h2{font-size:1.2rem;line-height:1.5}h3{font-size:1.05rem}small,.small{font-size:.875rem}.muted{color:var(--muted)}.mono{font-variant-numeric:tabular-nums;font-family:Consolas,"SFMono-Regular",monospace}.boot{padding:15vh 8vw;color:var(--blue)}.icon{width:20px;height:20px;flex:none;vertical-align:middle;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.btn{border:1px solid var(--line);background:#fff;padding:10px 18px;border-radius:8px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;color:#34465e;text-decoration:none;line-height:1.5}.btn:hover{background:#eef3f9;border-color:#b3c8e2}.btn.primary{background:var(--blue);color:white;border-color:var(--blue)}.btn.primary:hover{background:#0055ad}.btn.secondary{background:#e8edf3;border-color:#e8edf3}.btn.danger{color:var(--red);border-color:#f1cfd4;background:#fff}.btn.compact{padding:7px 12px;min-height:38px;font-size:.875rem}.btn.text{border:0;background:transparent;color:var(--blue)}.btn.recording{background:var(--red);border-color:var(--red);color:white}.wide{width:100%}.badge{display:inline-flex;align-items:center;white-space:nowrap;padding:3px 9px;font-size:.8rem;font-weight:600;border-radius:5px;background:#edf2f8;color:#56667c}.badge.blue{background:#e8f2ff;color:#005cb9}.badge.green{background:#e7f4ed;color:var(--green)}.badge.red{background:#fff0f0;color:var(--red)}.badge.amber{background:#fff3d9;color:#865800}.flex{display:flex;align-items:center;gap:12px}.spread{display:flex;justify-content:space-between;align-items:center;gap:16px}.stack{display:grid;gap:20px}.rule{height:1px;background:var(--line);border:0;margin:22px 0}.error{color:var(--red)}.notice{padding:12px 16px;border-radius:8px;background:#eaf3fe;color:#315878;font-size:.875rem;line-height:1.7}.notice.warning{background:#fff5df;color:#825c1b}.notice.error{background:#fff0f0;color:var(--red)}.notice[hidden]{display:none}.field{display:grid;gap:7px;font-size:.875rem;font-weight:600}.field input,.field select,.field textarea{width:100%;min-width:0;font-size:1rem;font-weight:400;border:1px solid #d8e0e9;border-radius:7px;padding:11px 12px;color:#1d2b40;background:white;min-height:46px;outline:none}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px #0066cc12}.field input:disabled{background:#f3f5f7;color:var(--muted)}.two-fields{display:grid;grid-template-columns:1fr 1fr;gap:14px}.form-error{color:var(--red);font-size:.875rem;min-height:1.5em;white-space:pre-line}.panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px}.eyebrow{font-size:.8rem;font-weight:700;letter-spacing:.12em;color:var(--blue);text-transform:uppercase}
/* 登录 */
.auth-layout{min-height:100vh;display:grid;grid-template-columns:46% 54%;background:#fff}.auth-brand{background:#113a63;color:white;padding:55px 11%;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}.auth-brand:before{content:"";position:absolute;inset:0;background:linear-gradient(145deg,#15365300 40%,#0677dd30),repeating-linear-gradient(0deg,transparent,transparent 63px,#ffffff05 64px),repeating-linear-gradient(90deg,transparent,transparent 63px,#ffffff05 64px);pointer-events:none}.brand-lockup,.auth-copy,.auth-brand-footer{position:relative}.brand-lockup{display:flex;align-items:center;gap:16px}.brand-lockup img{width:66px;height:66px;object-fit:contain;border-radius:15px}.school-cn{font-size:1.1rem;font-weight:700}.school-en{font-size:.69rem;letter-spacing:.045em;opacity:.72;margin-top:3px}.auth-copy{margin:80px 0;max-width:450px}.auth-copy .eyebrow{color:#84c4ff}.auth-copy h1{font-size:2.75rem;line-height:1.55;letter-spacing:.015em;margin:18px 0 24px}.auth-copy p{color:#b6cce3;font-size:1rem;line-height:2}.auth-measure{display:flex;gap:22px;margin-top:45px;padding-top:24px;border-top:1px solid #ffffff25}.auth-measure span{display:block;font-size:.8rem;color:#a9c4df}.auth-measure strong{font-size:1.18rem;display:block;font-weight:500;letter-spacing:.02em}.auth-brand-footer{font-size:.8rem;color:#adc1d6}.auth-main{display:flex;align-items:center;justify-content:center;padding:42px}.auth-form{width:100%;max-width:408px}.auth-form h2{font-size:1.8rem;margin:8px 0}.auth-form>p{margin-bottom:26px}.auth-form form{display:grid;gap:16px}.auth-form .auth-switch{text-align:center;font-size:.875rem;margin-top:20px}.captcha-row{display:grid;grid-template-columns:1fr 112px;gap:12px;align-items:end}.captcha{height:46px;width:112px;padding:0;overflow:hidden;border:1px solid #c7d8e8;background:#eef5fd;border-radius:7px}.captcha canvas{display:block;width:110px;height:44px}.mobile-brand{display:none}.auth-note{margin-top:24px;padding-top:18px;border-top:1px solid var(--line);font-size:.8rem;color:var(--muted);text-align:center}
/* 工作台 */
.app-layout{min-height:100vh;display:grid;grid-template-columns:240px minmax(0,1fr)}.sidebar{position:sticky;top:0;height:100vh;background:#fff;border-right:1px solid var(--line);padding:28px 20px;display:flex;flex-direction:column}.sidebar-brand{display:flex;gap:11px;align-items:center;padding:0 4px 28px}.sidebar-brand img{width:40px;height:40px}.sidebar-brand strong{display:block;font-size:1.13rem;letter-spacing:.03em}.sidebar-brand small{display:block;color:var(--muted);font-size:.75rem}.nav-label{font-size:.75rem;color:#8190a5;letter-spacing:.1em;margin:17px 14px 10px}.nav-item{border:0;border-radius:7px;padding:13px 14px;background:transparent;display:flex;align-items:center;gap:11px;color:#607187;text-align:left;width:100%;font-size:.94rem;margin-bottom:5px}.nav-item.active{background:#eaf3ff;color:var(--blue);font-weight:700}.sidebar-foot{margin-top:auto;border-top:1px solid var(--line);padding-top:20px;font-size:.75rem;color:#78879a}.sidebar-foot img{width:29px;height:29px;margin-bottom:9px}.workspace{min-width:0}.topbar{height:78px;background:#ffffffcc;border-bottom:1px solid var(--line);padding:0 38px;display:flex;align-items:center;justify-content:space-between;gap:18px}.breadcrumb{font-size:.875rem;color:#687a90}.profile-button{display:flex;align-items:center;gap:10px;border:0;background:transparent;text-align:left;font-size:.875rem;color:#314157}.avatar{width:35px;height:35px;display:grid;place-items:center;background:#e7eef8;color:#275f9b;border-radius:50%;font-weight:700}.main{max-width:1420px;margin:0 auto;padding:34px 38px 65px}.page-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:26px}.page-heading p{color:var(--muted);font-size:.9rem;margin-top:7px}.page-heading .eyebrow{margin-bottom:7px}.welcome{display:grid;grid-template-columns:1fr auto;gap:20px;background:#ecf4fd;border-color:#dceafa;padding:26px 30px;margin-bottom:32px}.welcome p{color:#54708c;font-size:.9rem;margin-top:8px}.welcome-symbol{align-self:center;display:grid;place-items:center;width:62px;height:62px;background:white;border:1px solid #d5e5f5;border-radius:16px;color:var(--blue)}.welcome-symbol .icon{width:34px;height:34px}.section-head{margin-bottom:17px}.section-head span{color:var(--muted);font-size:.875rem}.module-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.module-card{display:flex;flex-direction:column;align-items:flex-start;position:relative;text-align:left;border:1px solid var(--line);border-radius:11px;background:white;padding:24px;color:inherit;min-height:217px}.module-card.available{border-top:3px solid var(--blue);padding-top:22px}.module-card.available:hover{box-shadow:0 6px 22px #193b6010;border-color:#8bb6e1}.module-card.unavailable{background:#f9fafc;color:#66778b}.module-card .module-icon{color:var(--blue);margin-bottom:23px}.module-card.unavailable .module-icon{color:#91a1b4}.module-card .module-icon .icon{width:28px;height:28px}.module-card .badge{position:absolute;right:20px;top:23px}.module-card h3{margin-bottom:8px}.module-card p{font-size:.85rem;color:var(--muted);line-height:1.8}.module-link{display:flex;align-items:center;gap:7px;margin-top:20px;font-size:.875rem;font-weight:600;color:var(--blue)}.work-note{margin-top:28px;display:flex;gap:11px;color:#728299;font-size:.85rem;align-items:flex-start}.work-note .icon{width:18px;margin-top:3px}.account-card{max-width:680px}.account-line{display:flex;justify-content:space-between;gap:18px;border-bottom:1px solid #eef1f6;padding:15px 0;font-size:.95rem}.account-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.account-danger{padding-top:22px;margin-top:32px;border-top:1px solid var(--line)}
/* 测量记录表 */
.survey-heading{margin-bottom:20px}.survey-heading h1{font-size:1.65rem}.survey-tools{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.survey-grid{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:22px;align-items:start}.station-list{display:grid;gap:20px}.station{background:white;border:1px solid var(--line);border-radius:11px;overflow:hidden}.station-head{display:flex;justify-content:space-between;align-items:center;padding:15px 20px;background:#fbfcfe;border-bottom:1px solid var(--line)}.station-number{color:var(--blue);background:#eaf3ff;border-radius:5px;width:30px;height:30px;display:grid;place-items:center;font-weight:700;font-size:.875rem}.station-head .btn{color:#77869a}.table-wrap{overflow-x:auto;overscroll-behavior-x:contain;padding:14px 16px 3px}.reading-table{width:100%;border-collapse:separate;border-spacing:5px;font-size:.875rem;table-layout:fixed;min-width:470px}.reading-table th{font-weight:500;color:#76879a;padding:4px 2px;text-align:center;font-size:.8rem}.reading-table th:first-child{width:44px}.reading-table th:nth-child(2){width:80px}.reading-table th:last-child{width:67px}.reading-table td{padding:4px 0;text-align:center;vertical-align:middle}.reading-table td:first-child{font-weight:600;color:#4d637f;font-size:.875rem}.reading-table input{width:100%;min-width:0;border:1px solid #dce3ec;border-radius:6px;background:#fff;outline:none;text-align:center;padding:10px 3px;color:#203b5c;font-size:1rem;font-variant-numeric:tabular-nums}.reading-table input:focus{border-color:var(--blue);box-shadow:0 0 0 2px #0066cc15}.reading-table input::placeholder{color:#a1adbd;font-size:.8rem}.reading-table .computed{font-variant-numeric:tabular-nums;font-weight:600;color:#43617e}.station-result{display:flex;justify-content:space-between;gap:14px;padding:12px 22px 16px;font-size:.85rem;color:#687c93;flex-wrap:wrap}.station-result strong{color:#264a73;margin-left:6px;font-size:.93rem;font-variant-numeric:tabular-nums}.station-issues{background:#fff4f3;color:var(--red);font-size:.85rem;padding:10px 20px;border-top:1px solid #f9e2e0}.station-issues:empty{display:none}.station-voice{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:0 21px 20px}.station-voice .btn{background:#eef5fd;color:#0066cc;border-color:#dceafd;font-size:.875rem}.station-voice .recording{background:var(--red);color:white;border-color:var(--red)}.summary-panel{position:sticky;top:22px;padding:21px}.summary-panel h2{font-size:1rem}.summary-label{font-size:.8rem;color:#7c8ca1;margin-bottom:5px}.summary-distance{padding:22px 0;border-bottom:1px solid var(--line)}.summary-distance strong{font-size:2rem;font-weight:600;color:#203e64}.summary-distance span{font-size:.85rem;margin-left:6px;color:var(--muted)}.summary-details{padding:14px 0}.summary-details div{display:flex;justify-content:space-between;font-size:.875rem;gap:8px;margin:12px 0;color:#687a91}.summary-details strong{color:#304f74;font-weight:600}.limit-note{font-size:.8rem;line-height:1.9;background:#f5f8fc;border-radius:7px;padding:14px;color:#6a7e96}.save-state{font-size:.8rem;color:#647d95;margin-top:15px;overflow-wrap:anywhere}.survey-actions{position:sticky;bottom:0;z-index:3;background:#f5f7faf5;padding:18px 0 0;display:flex;gap:12px}.survey-actions .btn{flex:1;min-height:49px}.empty{padding:55px 20px;text-align:center;color:var(--muted)}.empty .icon{width:38px;height:38px;margin-bottom:12px;color:#87a4c4}.empty h3{color:#44617f;margin-bottom:8px}.helper-strip{font-size:.85rem;margin-bottom:17px;display:flex;justify-content:space-between;align-items:center;gap:12px;color:#6c7f95}.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px;margin-bottom:23px}.stat-box{background:white;border:1px solid var(--line);padding:20px 22px;border-radius:10px}.stat-box span{font-size:.875rem;color:var(--muted)}.stat-box strong{display:block;font-size:1.8rem;color:#26476d;margin-top:7px;font-weight:600}.student{padding:0;overflow:hidden}.student summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:15px;align-items:center;padding:20px 22px}.student summary::-webkit-details-marker{display:none}.student summary:after{content:'⌄';color:#7a8fa7}.student[open] summary:after{transform:rotate(180deg)}.student summary>div:first-child{flex:1}.student .student-body{padding:0 20px 20px;border-top:1px solid var(--line)}.student .table-wrap{padding:12px 0}.student .reading-table{table-layout:auto;border-collapse:collapse}.student .reading-table td,.student .reading-table th{border-bottom:1px solid var(--line);padding:8px}.student .station-result{padding-left:4px}.student-name{font-weight:600}.student-status{font-size:.8rem;color:var(--muted);margin-top:3px}.search-input{border:1px solid #d8e0e9;border-radius:7px;padding:10px 13px;min-height:44px;background:white;width:240px;max-width:100%;font:inherit;font-size:.9rem}
/* 对话框与反馈 */
dialog{border:0;border-radius:14px;box-shadow:0 22px 80px #0d294940;padding:0;max-width:min(620px,calc(100vw - 28px));width:100%;max-height:88dvh;color:inherit}dialog::backdrop{background:#10243d80;backdrop-filter:blur(3px)}.dialog-header{display:flex;align-items:center;justify-content:space-between;padding:22px 25px;border-bottom:1px solid var(--line)}.dialog-header h2{font-size:1.18rem}.dialog-body{padding:24px;overflow-wrap:anywhere}.dialog-footer{display:flex;justify-content:flex-end;gap:10px;flex-wrap:wrap;margin-top:24px}.dialog-close{border:0;background:transparent;color:#8190a5;padding:6px;font-size:1.4rem;line-height:1;min-width:36px;min-height:36px}.check-result{text-align:center;padding:0 0 22px}.check-result h3{font-size:1.5rem;margin:12px 0 5px;color:var(--green)}.check-result.bad h3{color:var(--red)}.check-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;background:#f5f8fc;border-radius:8px;padding:17px 8px}.check-metrics div{text-align:center}.check-metrics small{color:var(--muted);font-size:.75rem}.check-metrics strong{display:block;font-size:1.13rem;margin-top:6px;color:#274a72}.issue-list{padding-left:20px;margin:18px 0 0;font-size:.875rem;color:var(--red);max-height:180px;overflow:auto}.chat-messages{display:grid;gap:15px;max-height:46dvh;overflow:auto;padding:3px 0 15px}.message{border-radius:9px;padding:13px 16px;background:#f0f5fb;white-space:pre-wrap;font-size:.94rem;line-height:1.85}.message.user{background:#0066cc;color:white;margin-left:45px}.message.assistant{margin-right:20px}.chat-form{display:flex;gap:10px;border-top:1px solid var(--line);padding-top:16px}.chat-form input{flex:1;min-width:0;padding:10px 12px;border:1px solid var(--line);border-radius:7px;outline:none}.chat-form input:focus{border-color:var(--blue)}#toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%) translateY(20px);background:#173452;color:#fff;border-radius:8px;padding:12px 20px;box-shadow:0 5px 25px #11365a25;max-width:calc(100vw - 30px);width:max-content;z-index:20;font-size:.9rem;opacity:0;pointer-events:none;transition:opacity .18s,transform .18s}#toast.visible{opacity:1;transform:translateX(-50%) translateY(0)}.offline-bar{background:#fff3d9;border-bottom:1px solid #f3e3c0;color:#7d591d;font-size:.875rem;padding:10px 38px;display:flex;justify-content:space-between;align-items:center;gap:15px}.offline-bar .btn{min-height:30px;padding:2px 8px;background:transparent;border-color:#dac39a;color:#795516}.mobile-bottom{display:none}
/* 隐私政策（公开页面，无需登录） */
.privacy-layout{max-width:900px;margin:0 auto;padding:45px 24px 70px}
.privacy-document h1{font-size:1.65rem;margin-bottom:6px}
.privacy-document .privacy-meta{color:var(--muted);font-size:.85rem}
.privacy-document h2{font-size:1.05rem;margin:28px 0 10px}
.privacy-document p,.privacy-document li{font-size:.92rem;color:#41546d;line-height:1.95}
.privacy-document ul{padding-left:20px;margin:10px 0;display:grid;gap:7px}
.privacy-back{margin-top:34px}
@media(min-width:1500px){.main{padding-top:45px}.module-card{min-height:235px}}
@media(max-width:1200px){.app-layout{grid-template-columns:205px minmax(0,1fr)}.sidebar{padding:25px 13px}.main{padding:27px 25px 55px}.topbar{padding:0 25px}.survey-grid{grid-template-columns:minmax(0,1fr)}.summary-panel{position:static;display:grid;grid-template-columns:1fr 1fr;gap:0 22px}.summary-panel h2,.summary-panel .save-state{grid-column:1/-1}.summary-distance{border-bottom:0;padding:15px 0}.summary-details{padding:0}.limit-note{grid-column:1/-1}.module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.auth-copy h1{font-size:2.1rem}.auth-measure{gap:14px}}
@media(max-width:760px){.auth-layout{grid-template-columns:1fr}.auth-brand{display:none}.auth-main{padding:32px 24px}.auth-form{max-width:430px}.mobile-brand{display:flex;align-items:center;gap:12px;margin-bottom:32px;color:#244769;font-size:.94rem;font-weight:600}.mobile-brand img{width:44px;height:44px}.auth-form h2{font-size:1.65rem}.app-layout{display:block}.sidebar{display:none}.topbar{height:64px;padding:0 18px}.breadcrumb{font-size:.85rem}.profile-button small{display:none}.main{padding:24px 16px 92px}.page-heading{gap:12px;margin-bottom:21px}h1{font-size:1.6rem}.page-heading p{font-size:.84rem}.welcome{padding:22px;margin-bottom:26px}.welcome-symbol{width:44px;height:44px;border-radius:10px}.welcome-symbol .icon{width:26px;height:26px}.module-grid{gap:12px}.module-card{padding:20px 17px;min-height:228px}.module-card.available{padding-top:18px}.module-card .badge{right:14px;top:20px;font-size:.7rem}.module-card h3{font-size:.99rem}.module-card p{font-size:.8rem}.module-card .module-icon{margin-bottom:22px}.section-head span{font-size:.8rem}.mobile-bottom{position:fixed;bottom:0;left:0;right:0;display:grid;grid-template-columns:1fr 1fr;background:#fff;border-top:1px solid var(--line);z-index:5;padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom button{border:0;padding:11px;color:#788ba3;background:transparent;display:flex;gap:8px;align-items:center;justify-content:center;font-size:.875rem}.mobile-bottom button.active{color:var(--blue);font-weight:600;background:#f3f8fe}.survey-actions{bottom:44px;padding-bottom:8px}.survey-heading{display:block}.survey-tools{margin-top:15px}.survey-heading h1{font-size:1.45rem}.helper-strip{align-items:flex-start;font-size:.8rem}.station-head{padding:13px 15px}.table-wrap{padding:10px 5px 0}.reading-table{min-width:410px;border-spacing:3px}.reading-table th:first-child{width:34px}.reading-table th:nth-child(2){width:62px}.reading-table th:last-child{width:58px}.reading-table input{padding:10px 1px;font-size:.9rem}.station-result{padding:12px 15px;gap:8px;font-size:.8rem}.station-result strong{font-size:.85rem;margin-left:3px}.station-voice{padding:0 15px 16px;gap:10px}.station-voice .btn{padding:10px 5px;font-size:.8rem}.station-issues{padding:9px 15px;font-size:.8rem}.summary-panel{padding:19px;gap:0 16px}.summary-details div{font-size:.8rem}.summary-distance strong{font-size:1.75rem}.summary-panel h2{font-size:1rem}.stat-grid{grid-template-columns:repeat(2,1fr);gap:10px}.stat-box{padding:15px}.stat-box span{font-size:.8rem}.stat-box strong{font-size:1.5rem}.teacher-heading{display:block}
/* 教师端模块切换（等外闭合水准测量 / 测回法水平角观测） */
.teacher-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}.teacher-heading .survey-tools{margin-top:14px}.student summary{padding:17px;gap:10px}.student .student-body{padding:0 12px 15px}.student-name{font-size:.94rem}.student summary .badge{font-size:.7rem}.offline-bar{padding:9px 17px;font-size:.8rem}.dialog-body{padding:20px}.dialog-header{padding:18px 20px}.check-metrics{padding:15px 5px}.check-metrics small{font-size:.7rem}.check-metrics strong{font-size:1rem}.dialog-footer .btn{flex:1}.account-card{padding:22px}.account-actions .btn{flex:1}#toast{bottom:70px}.work-note{font-size:.8rem}.school-en{display:none}}

/* 教师折叠：记录详情的展开与统计范围分开操作。 */
.student details[open] summary:after{transform:rotate(180deg)}
.student-fold-actions{display:flex;justify-content:flex-end;padding:0 22px 16px}
.teacher-fold-note{margin-bottom:20px}
.folded-students{margin-top:16px;padding-top:22px;border-top:1px solid var(--line)}
.unsubmitted-students{padding:16px 22px;background:#f9fafc}
.unsubmitted-students summary{cursor:pointer;min-height:44px;align-content:center;font-weight:600}
.unsubmitted-students summary span{margin-left:12px;font-weight:400}
.unsubmitted-students ul{margin:12px 0 0;padding-left:20px;line-height:1.8;overflow-wrap:anywhere}
.folded-students .section-head p{margin-top:6px}
.folded-student{display:flex;align-items:center;justify-content:space-between;gap:16px;background:#f9fafc;padding:16px 22px}
.student-name{overflow-wrap:anywhere}
.folded-student>div{min-width:0}
.folded-student .btn{flex-shrink:0}
@media(max-width:760px){.student-fold-actions{padding:0 17px 14px}.folded-student{align-items:flex-start;flex-direction:column;padding:17px}.folded-student .btn{align-self:flex-end}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
/* ===== 测回法水平角观测：沿用 reading-table 的外观，仅按本表列数调整列宽 ===== */
.round-table{min-width:620px}
.round-table th:first-child{width:116px}
.round-table th:nth-child(2){width:48px}
.round-table th:nth-child(3){width:224px}
.round-table th:nth-child(4){width:124px}
.round-table th:nth-child(5){width:114px}
.round-target,.round-face{text-align:center;white-space:nowrap}
/* 盘位独立成列：每行各一格（自上而下 左/左/右/右），与左侧按钮逐行对应 */
.round-face{color:#6c7f95}
.round-reading{text-align:center}
.round-mic{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;background:#eef5fd;color:var(--blue);border-color:#dceafd}
.round-mic .icon{width:16px;height:16px}
.round-mic.recording{background:var(--red);color:#fff;border-color:var(--red)}
.dms{display:inline-flex;align-items:center;gap:3px}
.dms input{width:54px;text-align:right;font-variant-numeric:tabular-nums}
.round-half,.round-angle{text-align:center;font-variant-numeric:tabular-nums;color:#203e64}
.round-half.bad,.round-angle.bad,.station-result .bad{color:var(--red);font-weight:600}
/* 提醒项（不参与合格判定）用警示橙，与红色超限区分开 */
.station-result .warn,.summary-details .warn{color:#b36b00;font-weight:600}
.station-issues.notice-only{background:#fff8ec;color:#b36b00;border-top-color:#f2e2c8}
.issue-list.notice-list li{color:#b36b00}
.summary-distance .angle-value{font-size:1.4rem;letter-spacing:-.01em}
/* 公安联网备案标识：图标与编号同属一个链接，整体随页脚文字颜色 */
.beian-link{display:inline-flex;align-items:center;gap:4px;color:inherit;text-decoration:none;vertical-align:middle}
.beian-link:hover{color:var(--blue);text-decoration:underline}
.beian-icon{width:auto;height:20px;margin:0;flex:0 0 auto;display:inline-block}
/* 侧边栏存在 .sidebar-foot img{width:29px;height:29px} 的通用规则，此处显式复位图标尺寸 */
.sidebar-foot .beian-icon{width:auto;height:20px;margin:0}
.auth-note .beian-link{justify-content:center}
/* 「隐私政策」入口：只出现在未登录的注册引导行（登录后不展示），刻意弱化为次要信息 */
.privacy-link{font-size:.85em;color:inherit;opacity:.6;white-space:nowrap}
.auth-switch-sep{margin:0 8px;opacity:.35}
.privacy-link:hover,.privacy-link:focus-visible{opacity:1;color:var(--blue);text-decoration:underline}
/* 闭合导线：点号、单测回与往返测距复用现有记录卡。 */
.traverse-point-fields{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;padding:18px 20px 8px}
.traverse-point-fields label,.traverse-distance-fields label{display:grid;gap:6px;font-size:.85rem;color:var(--muted)}
.traverse-point-fields label>span{display:none}
.traverse-point-fields input,.traverse-distance-fields input{width:100%;min-height:44px;border:1px solid var(--line);border-radius:7px;padding:9px 10px;font:inherit;color:var(--text);background:#fff}
.traverse-connection{display:flex;align-items:center;gap:10px;margin:4px 20px 10px;min-height:44px;font-size:.85rem;color:var(--muted);cursor:pointer}
.traverse-connection input{width:19px;height:19px;accent-color:var(--blue)}
.traverse-dms{display:flex;gap:5px;align-items:center;justify-content:center}
.traverse-dms label{display:flex;align-items:center;gap:3px;position:relative}
.traverse-dms input{min-width:38px!important;width:45px!important;text-align:center;min-height:44px}
.traverse-angle-table{min-width:640px!important}
.traverse-angle-table th:first-child{width:115px!important}
.traverse-mic{max-width:150px;white-space:normal;overflow-wrap:anywhere;min-height:44px}
.traverse-mic span{overflow-wrap:anywhere;min-width:0}
.traverse-distance-fields{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:0 20px 18px}
.traverse-distance-fields>div{display:flex;gap:8px;align-items:flex-end;min-width:0}
.traverse-distance-fields label{min-width:0;flex:1;overflow-wrap:anywhere}
.traverse-distance-fields .btn{flex-shrink:0;min-height:44px}
.traverse-distance-note{margin:0 20px 18px}
.traverse-issues{padding-left:20px;margin:8px 0;font-size:.85rem;overflow-wrap:anywhere}
.traverse-results{padding:22px;margin-top:24px;min-width:0}
.traverse-results h2{margin-bottom:18px;font-size:1.05rem}
.traverse-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:18px 0}
.traverse-metrics small{display:block;color:var(--muted);margin-bottom:5px}
.traverse-metrics strong{display:block;overflow-wrap:anywhere;font-size:.95rem;font-variant-numeric:tabular-nums}
.traverse-edge-table{min-width:760px;table-layout:auto!important;border-collapse:collapse;text-align:left}
.traverse-edge-table th,.traverse-edge-table td{padding:12px 10px!important;border-bottom:1px solid var(--line);font-size:.85rem;white-space:nowrap}
.traverse-readonly{padding:18px 0;border-bottom:1px solid var(--line)}
.traverse-readonly h3{font-size:.95rem;overflow-wrap:anywhere}
.traverse-readonly .reading-table{min-width:420px}
.traverse-readonly .reading-table th:first-child{width:90px;min-width:90px}
.traverse-readonly .reading-table th:nth-child(2){width:60px;min-width:60px}
.traverse-readonly .reading-table th:nth-child(3){min-width:150px}
.traverse-readonly .reading-table th:last-child{width:110px;min-width:110px}
#traverse-workspace .recording{background:var(--red);color:#fff}
#traverse-workspace .summary-panel>.spread{grid-column:1/-1}
#traverse-workspace .summary-panel .summary-details{grid-column:1/-1}
#traverse-workspace .helper-strip>.btn{flex-shrink:0}
#traverse-workspace .recording::after{content:'停止';font-size:.75rem}
#traverse-workspace input[aria-invalid=true]{border-color:var(--red)}
#traverse-workspace input:focus-visible,#traverse-workspace button:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:760px){.traverse-point-fields{gap:8px;padding:14px 14px 6px}.traverse-connection{margin:0 14px 8px;align-items:flex-start;padding-top:8px}.traverse-connection input{flex-shrink:0}.traverse-distance-fields{grid-template-columns:1fr;padding:0 14px 16px;gap:12px}.traverse-results{padding:16px}.traverse-metrics{grid-template-columns:1fr 1fr}.traverse-point-fields input{padding:9px 6px}.traverse-issues{font-size:.8rem}}