:root{--primary:#2f6fed;--primary-dark:#2058c6;--primary-soft:#eaf1ff;--ink:#172033;--muted:#6f7889;--line:#e4e8f0;--bg:#f4f6fa;--surface:#fff;--success:#1e9b70;--warning:#e89a31;--danger:#d94b55;--purple:#7654d8;--shadow:0 12px 34px rgba(33,48,78,.08);--radius:18px}
*{box-sizing:border-box}html{font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;color:var(--ink);background:var(--bg)}body{margin:0;min-height:100vh}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}.app-shell{min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:240px;background:#fff;border-right:1px solid var(--line);padding:26px 18px;display:flex;flex-direction:column;z-index:20}.brand{display:flex;gap:12px;align-items:center;padding:0 8px 30px}.brand-mark{width:42px;height:42px;border-radius:14px;background:linear-gradient(145deg,#4b80f1,#235ad0);display:grid;place-items:center;color:#fff;font-weight:800;box-shadow:0 8px 18px rgba(47,111,237,.25)}.brand strong{display:block;font-size:18px}.brand span{display:block;color:var(--muted);font-size:11px;margin-top:3px}.side-nav{display:grid;gap:7px}.nav-item{border:0;background:transparent;color:#657087;border-radius:12px;padding:12px 14px;display:flex;align-items:center;gap:12px;font-weight:600;text-align:left}.nav-item span{font-size:21px;line-height:1}.nav-item:hover{background:#f5f7fb}.nav-item.active{background:var(--primary-soft);color:var(--primary)}.sidebar-tip{margin-top:auto;background:#f7f9fd;border:1px solid var(--line);border-radius:14px;padding:15px;color:var(--muted);font-size:12px;line-height:1.7}.main-content{margin-left:240px;padding:28px clamp(24px,4vw,56px) 60px;max-width:1500px}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}.topbar h1{font-size:25px;margin:3px 0 0}.eyebrow,.section-label{margin:0;color:#929aaa;font-weight:700;font-size:10px;letter-spacing:.13em}.avatar-button{border:0;background:var(--primary-soft);color:var(--primary);border-radius:50%;width:44px;height:44px;font-weight:700}.page{display:none;animation:fade .25s ease}.page.active{display:block}@keyframes fade{from{opacity:.3;transform:translateY(4px)}}
.hero-card{min-height:205px;border-radius:26px;padding:36px 40px;display:flex;align-items:center;justify-content:space-between;gap:30px;color:#fff;background:radial-gradient(circle at 83% 15%,rgba(255,255,255,.22),transparent 25%),linear-gradient(125deg,#225ccf,#4c82f4);box-shadow:0 18px 45px rgba(39,96,211,.24)}.hero-card h2{font-size:30px;margin:10px 0 8px}.hero-card p{margin:0;color:#e1eaff}.hero-kicker{font-size:12px;font-weight:700;background:rgba(255,255,255,.16);padding:7px 10px;border-radius:99px}.primary-button,.ghost-button,.danger-button{border-radius:11px;padding:11px 17px;font-weight:700;border:1px solid transparent}.primary-button{background:var(--primary);color:#fff;box-shadow:0 7px 16px rgba(47,111,237,.18)}.primary-button:hover{background:var(--primary-dark)}.hero-button{background:#fff;color:var(--primary);box-shadow:none;white-space:nowrap}.hero-button:hover{background:#f6f9ff}.ghost-button{background:#fff;border-color:var(--line);color:#49546a}.ghost-button:hover{border-color:#bfc8d8;background:#f9fafc}.danger-button{background:#fff1f2;border-color:#ffdadd;color:var(--danger)}.small{padding:7px 11px;font-size:12px}.text-button,.link-button{border:0;background:transparent;color:var(--primary);font-weight:700;padding:4px}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:20px 0}.stat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;display:flex;align-items:center;gap:15px}.stat-icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;font-size:21px}.stat-icon.blue{background:#eaf1ff;color:var(--primary)}.stat-icon.green{background:#e6f7f1;color:var(--success)}.stat-icon.amber{background:#fff3e3;color:var(--warning)}.stat-icon.purple{background:#f0ebff;color:var(--purple)}.stat-card strong{font-size:22px;display:block}.stat-card span{font-size:12px;color:var(--muted)}.two-column{display:grid;grid-template-columns:1.25fr .75fr;gap:20px}.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 2px 4px rgba(33,48,78,.015)}.panel-heading,.page-actions{display:flex;align-items:center;justify-content:space-between;gap:20px}.panel-heading{margin-bottom:17px}.panel-heading h3{font-size:18px;margin:4px 0 0}.page-actions{margin-bottom:22px}.page-actions h2{font-size:25px;margin:0 0 5px}.page-actions p{color:var(--muted);margin:0;font-size:13px}.lesson-list{display:grid;gap:10px}.lesson-item{border:1px solid var(--line);border-radius:14px;padding:13px 14px;display:grid;grid-template-columns:auto 1fr auto;gap:13px;align-items:center;background:#fff}.lesson-item:hover{border-color:#c6d4ef}.lesson-time{width:44px;height:44px;border-radius:13px;background:var(--primary-soft);display:grid;place-items:center;color:var(--primary);font-weight:800;font-size:12px}.lesson-main strong{display:block;font-size:14px}.lesson-main small{display:block;color:var(--muted);margin-top:5px}.lesson-price{text-align:right}.lesson-price strong{display:block;font-size:14px}.lesson-price small{color:var(--muted)}.empty-state{text-align:center;padding:35px 18px;color:var(--muted)}.empty-icon{width:52px;height:52px;border-radius:18px;background:#f1f4f9;display:grid;place-items:center;margin:0 auto 10px;font-size:23px}.overview-total{display:flex;align-items:end;justify-content:space-between;padding:5px 2px 20px;border-bottom:1px solid var(--line)}.overview-total strong{font-size:29px}.overview-total span{color:var(--muted);font-size:12px}.subject-bar{margin-top:17px}.subject-bar-head{display:flex;justify-content:space-between;font-size:12px;margin-bottom:7px}.bar-track{height:7px;background:#edf0f5;border-radius:99px;overflow:hidden}.bar-fill{height:100%;background:var(--primary);border-radius:99px}
.search-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.search-box{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:0 13px;min-width:280px}.search-box input{border:0;outline:0;padding:11px 0;width:100%;background:transparent}.muted{color:var(--muted);font-size:12px}.student-grid{display:grid;grid-template-columns:repeat(3,minmax(250px,1fr));gap:16px}.student-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}.student-card-head{display:flex;align-items:center;gap:12px;margin-bottom:17px}.student-avatar{width:44px;height:44px;border-radius:14px;color:#fff;background:linear-gradient(145deg,#7299ef,#3469db);display:grid;place-items:center;font-size:17px;font-weight:800}.student-card-head h3{font-size:17px;margin:0}.student-card-head span{font-size:11px;color:var(--muted)}.card-menu{margin-left:auto;display:flex;gap:5px}.icon-button{border:0;background:transparent;width:34px;height:34px;border-radius:9px;color:#778094;font-size:21px}.icon-button:hover{background:#f0f3f8}.rate-chip{display:flex;justify-content:space-between;gap:10px;padding:10px 0;border-top:1px solid var(--line);font-size:12px}.rate-chip span{color:var(--muted)}.rate-chip strong{white-space:nowrap}.student-note{font-size:11px;color:var(--muted);background:#f7f9fc;border-radius:10px;padding:9px 11px;margin-top:10px}
.calendar-panel{padding:24px}.calendar-toolbar{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:22px}.month-switcher,.calendar-filters{display:flex;align-items:center;gap:10px}.month-switcher h3{min-width:110px;text-align:center;margin:0}.month-switcher>button:not(.ghost-button){border:1px solid var(--line);background:#fff;width:34px;height:34px;border-radius:9px;font-size:22px}.calendar-filters select{border:1px solid var(--line);border-radius:10px;background:#fff;padding:9px 12px;color:#526078}.weekdays,.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr)}.weekdays span{text-align:center;color:#8d95a4;font-size:11px;font-weight:700;padding:8px}.calendar-grid{border-top:1px solid var(--line);border-left:1px solid var(--line)}.calendar-day{min-height:106px;border:0;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff;padding:9px;text-align:left;overflow:hidden}.calendar-day:hover{background:#f8faff}.calendar-day.outside{background:#fafbfc;color:#b9c0cc}.calendar-day.selected{box-shadow:inset 0 0 0 2px var(--primary)}.calendar-day.today .day-number{background:var(--primary);color:#fff}.day-number{display:grid;place-items:center;width:25px;height:25px;border-radius:50%;font-size:12px;margin-bottom:5px}.calendar-event{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;background:var(--primary-soft);color:#2d61c4;border-left:3px solid var(--primary);padding:4px 5px;border-radius:4px;margin-top:4px;font-size:9px}.more-events{font-size:9px;color:var(--muted);padding:4px}.day-detail{margin-top:20px}
.export-buttons{display:flex;gap:8px}.report-filter-panel{display:grid;grid-template-columns:190px 1fr;gap:28px;align-items:start;margin-bottom:18px}.report-filter-panel>label,.field{display:grid;gap:7px;color:#59647a;font-size:12px;font-weight:700}.report-filter-panel input,.field input,.field textarea,.field select{width:100%;border:1px solid #dce1ea;border-radius:10px;padding:11px 12px;background:#fff;color:var(--ink);outline:none}.field textarea{resize:vertical}.report-filter-panel input:focus,.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,111,237,.1)}.check-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:9px;font-size:12px;font-weight:700}.check-grid{display:flex;flex-wrap:wrap;gap:8px}.check-grid label{display:flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:9px;padding:8px 10px;font-size:12px}.check-grid input{accent-color:var(--primary)}.report-overall{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:18px}.report-student{margin-bottom:14px}.report-student-head{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:14px}.report-student-head h3{margin:0}.report-student-head strong{color:var(--primary);font-size:20px}.summary-table{width:100%;border-collapse:collapse;margin-top:12px}.summary-table th,.summary-table td{text-align:left;padding:11px 8px;border-bottom:1px solid #edf0f5;font-size:12px}.summary-table th{color:var(--muted);font-weight:600}.date-tags{display:flex;gap:4px;flex-wrap:wrap}.date-tags span{background:#f2f5fa;padding:3px 6px;border-radius:5px}
.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.setting-card{display:flex;gap:16px;align-items:flex-start}.setting-icon{width:46px;height:46px;flex:0 0 auto;border-radius:14px;display:grid;place-items:center;font-size:22px}.setting-icon.blue{background:var(--primary-soft);color:var(--primary)}.setting-icon.green{background:#e6f7f1;color:var(--success)}.setting-icon.amber{background:#fff3e3;color:var(--warning)}.setting-icon.purple{background:#f0ebff;color:var(--purple)}.setting-card h3{margin:2px 0 7px;font-size:16px}.setting-card p{margin:0 0 15px;color:var(--muted);font-size:12px;line-height:1.6}
.modal-backdrop{position:fixed;inset:0;background:rgba(15,24,42,.46);backdrop-filter:blur(2px);z-index:90}.modal{border:0;border-radius:22px;width:min(600px,calc(100vw - 28px));max-height:88vh;padding:25px;box-shadow:0 30px 80px rgba(16,26,48,.24);z-index:100;color:var(--ink)}.modal::backdrop{background:transparent}.modal-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:20px}.modal-header h2{margin:4px 0 0;font-size:22px}.modal-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:22px}.rates-heading{display:flex;justify-content:space-between;align-items:center;margin:18px 0 9px}.rates-heading strong,.rates-heading small{display:block}.rates-heading small{color:var(--muted);font-size:10px;margin-top:3px}.rate-rows{display:grid;gap:8px}.rate-row{display:grid;grid-template-columns:1fr 1fr 120px 34px;gap:7px}.rate-row input{border:1px solid #dce1ea;border-radius:9px;padding:10px;min-width:0}.entry-tabs{display:flex;border-bottom:1px solid var(--line);margin:0 -25px 20px;padding:0 25px}.entry-tabs button{border:0;background:transparent;padding:11px 18px;color:var(--muted);font-weight:700;border-bottom:2px solid transparent}.entry-tabs button.active{color:var(--primary);border-color:var(--primary)}.entry-section{display:none}.entry-section.active{display:block}.voice-button{width:100%;display:flex;gap:12px;align-items:center;text-align:left;border:1px dashed #b8c8e9;background:#f5f8ff;color:var(--primary);border-radius:13px;padding:14px;margin-top:12px}.voice-button>span{width:34px;height:34px;background:var(--primary);color:#fff;border-radius:50%;display:grid;place-items:center;font-size:10px}.voice-button strong,.voice-button small{display:block}.voice-button small{color:#7181a2;margin-top:3px;font-size:10px}.voice-button.listening{background:#fff2f3;border-color:#ef9fa6;color:var(--danger)}.voice-button.listening>span{background:var(--danger);animation:pulse 1s infinite}@keyframes pulse{50%{box-shadow:0 0 0 8px rgba(217,75,85,.13)}}.example-text{font-size:11px;color:var(--muted);padding:10px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}.boxed{border:1px solid var(--line);border-radius:11px;padding:10px;max-height:120px;overflow:auto}.confirm-card{background:#f7f9fd;border:1px solid var(--line);border-radius:14px;padding:16px}.confirm-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.confirm-item span{font-size:10px;color:var(--muted);display:block}.confirm-item strong{font-size:13px}.fee-list{margin-top:14px;border-top:1px solid var(--line);padding-top:10px}.fee-row{display:flex;justify-content:space-between;padding:6px 0;font-size:12px}.warning-box{background:#fff7e8;border:1px solid #ffe1a9;color:#9b6512;border-radius:11px;padding:11px;margin-bottom:12px;font-size:12px;line-height:1.5}.detail-grid{display:grid;gap:9px}.detail-row{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding:9px 0;font-size:13px}.toast{position:fixed;left:50%;bottom:32px;transform:translate(-50%,20px);background:#1d2739;color:#fff;border-radius:11px;padding:11px 16px;font-size:12px;opacity:0;pointer-events:none;transition:.25s;z-index:200;box-shadow:var(--shadow)}.toast.show{opacity:1;transform:translate(-50%,0)}.bottom-nav{display:none}
@media(max-width:1100px){.stats-grid{grid-template-columns:repeat(2,1fr)}.student-grid{grid-template-columns:repeat(2,1fr)}.two-column{grid-template-columns:1fr}.main-content{padding-left:30px;padding-right:30px}}
@media(max-width:760px){body{padding-bottom:76px}.sidebar{display:none}.main-content{margin:0;padding:20px 15px 35px}.topbar{margin-bottom:18px}.topbar h1{font-size:20px}.avatar-button{width:38px;height:38px}.hero-card{min-height:190px;padding:25px 22px;display:block}.hero-card h2{font-size:25px}.hero-card p{font-size:13px;line-height:1.6}.hero-button{margin-top:21px;width:100%}.stats-grid{grid-template-columns:1fr 1fr;gap:10px}.stat-card{padding:14px;gap:10px}.stat-icon{width:38px;height:38px}.stat-card strong{font-size:18px}.two-column{gap:12px}.panel{padding:17px}.page-actions{align-items:flex-start}.page-actions h2{font-size:21px}.page-actions p{max-width:230px;line-height:1.5}.page-actions>.primary-button{padding:10px 12px}.student-grid{grid-template-columns:1fr}.search-box{min-width:0;width:72%}.calendar-panel{padding:10px}.calendar-toolbar{display:block;margin:5px 3px 14px}.month-switcher{justify-content:center}.calendar-filters{margin-top:10px}.calendar-filters select{width:50%;font-size:11px}.calendar-day{min-height:75px;padding:5px}.calendar-event{font-size:0;padding:0;width:6px;height:6px;border:0;border-radius:50%;display:inline-block;margin:3px 2px 0 0}.more-events{display:none}.day-number{width:23px;height:23px}.report-filter-panel{grid-template-columns:1fr;gap:15px}.report-overall{grid-template-columns:1fr 1fr}.export-buttons{flex-direction:column}.summary-table{display:block;overflow:auto}.settings-grid{grid-template-columns:1fr}.bottom-nav{position:fixed;display:grid;grid-template-columns:1fr 1fr 60px 1fr 1fr;align-items:center;bottom:0;left:0;right:0;height:68px;background:rgba(255,255,255,.96);border-top:1px solid var(--line);z-index:50;padding:4px max(8px,env(safe-area-inset-right)) env(safe-area-inset-bottom) max(8px,env(safe-area-inset-left));backdrop-filter:blur(12px)}.bottom-nav .nav-item{display:flex;flex-direction:column;gap:3px;justify-content:center;padding:4px;font-size:9px;border-radius:8px}.bottom-nav .nav-item span{font-size:19px}.quick-nav{width:48px;height:48px;border-radius:17px;border:0;background:var(--primary);color:#fff;font-size:28px;box-shadow:0 8px 18px rgba(47,111,237,.28);justify-self:center;margin-top:-20px}.modal{padding:20px;max-height:92vh}.entry-tabs{margin-left:-20px;margin-right:-20px;padding:0 20px}.rate-row{grid-template-columns:1fr 1fr 84px 30px}.rate-row input{font-size:11px;padding:9px 7px}.form-grid,.confirm-grid{grid-template-columns:1fr}.lesson-item{grid-template-columns:auto 1fr}.lesson-price{grid-column:2;text-align:left;margin-top:-8px}.toast{bottom:86px;max-width:90%;text-align:center}}
@media(max-width:380px){.stats-grid{grid-template-columns:1fr}.page-actions p{display:none}.report-overall{grid-template-columns:1fr}}
@media print{.sidebar,.topbar,.bottom-nav,.page-actions,.report-filter-panel{display:none!important}.main-content{margin:0;padding:0}.page{display:none!important}#page-reports{display:block!important}.panel{box-shadow:none;break-inside:avoid}}
.check-grid label,.export-buttons button{white-space:nowrap}
.lesson-time,.lesson-main{border:0;text-align:left}.lesson-main{background:transparent;padding:0;color:var(--ink)}.day-lesson-actions{display:flex;gap:7px;justify-content:flex-end}.day-lesson-item{grid-template-columns:auto 1fr auto}
@media(max-width:760px){.day-lesson-item{grid-template-columns:auto 1fr}.day-lesson-actions{grid-column:2;justify-content:flex-start}}