:root{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",Inter,"Helvetica Neue",sans-serif;color-scheme:light;--bg:#fff;--bg-1:#f5f5f5;--side:#fafafa;--tx:#1a1a18;--tx-2:#64645f;--tx-3:#91918a;--line:#ececea;--selected:#ebebeb;--solid:#202020;--solid-fg:#fff;--danger:#b57171;--shadow:0 14px 32px #00000013,0 2px 8px #00000007}
:root[data-theme="eye"]{--bg:#f8f4e9;--bg-1:#eee9dc;--side:#f5f0e4;--tx:#34352e;--tx-2:#717266;--tx-3:#929180;--line:#e4dece;--selected:#e7e1d4}
:root[data-theme="dark"]{color-scheme:dark;--bg:#181818;--bg-1:#242424;--side:#1e1e1e;--tx:#ecece8;--tx-2:#b2b2ac;--tx-3:#85857f;--line:#30302e;--selected:#303030;--solid:#f3f3ed;--solid-fg:#1c1c1a;--shadow:0 14px 42px #0008}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--tx);font-size:14px;line-height:1.5}button,input,select{font:inherit}button{color:inherit;cursor:pointer}button:disabled{cursor:default;opacity:.45}button,a,input,select{outline:none}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--tx-2);outline-offset:3px}a{color:inherit;text-decoration:none}button{border:0;background:none}svg{display:inline-block;vertical-align:middle;flex:none}img{display:block;max-width:100%}.skip-link{position:fixed;left:12px;top:-80px;z-index:20000;padding:8px 12px;background:var(--tx);color:var(--bg)}.skip-link:focus{top:12px}
.site-head{position:fixed;z-index:20;top:22px;left:32px;right:32px;display:flex;justify-content:space-between;align-items:flex-start}.brand{padding:0;text-align:left;line-height:1.2}.brand strong{display:block;font-size:44px;letter-spacing:-1.8px;font-weight:750}.brand small{display:block;margin-top:8px;font-size:14px;font-weight:650;letter-spacing:.2px}.account-wrap{position:relative}.account-bar{display:flex;align-items:center;gap:7px;padding:4px 9px 4px 5px;min-height:32px;background:var(--bg-1);border-radius:9px;font-size:13px}.account-bar b{font-weight:600}.avatar-mini{width:23px;height:23px;background:var(--selected);border-radius:50%;display:grid;place-items:center;font-size:12px}.plan-text{color:var(--tx-2)}.account-menu{position:absolute;top:42px;right:0;width:272px;padding:10px;border:1px solid var(--line);border-radius:16px;background:var(--bg);box-shadow:var(--shadow);animation:menu-in .16s ease;z-index:30}.menu-account{font-size:12px;color:var(--tx-3);padding:5px 7px 9px}.menu-item{width:100%;display:flex;align-items:center;gap:11px;text-align:left;padding:10px 7px;border-radius:8px;min-height:38px}.menu-item:hover,.menu-item:focus-visible{background:var(--bg-1)}.menu-item svg{color:var(--tx-2)}.menu-item .end{margin-left:auto;font-size:12px;color:var(--tx-3)}.menu-rule{height:1px;background:var(--line);margin:8px 0}
html,body{height:100%;overscroll-behavior:none}.home{height:100svh;overflow:hidden;position:relative;touch-action:none;overscroll-behavior:none}.scene-nav{position:absolute;left:32px;top:49%;display:grid;gap:8px;z-index:3}.scene-nav button{text-align:left;padding:0;font-size:13px;color:var(--tx-3);opacity:.5}.scene-nav button.active{color:var(--tx);opacity:1;font-weight:650}.scene-caption{position:absolute;top:49%;left:200px;color:var(--tx-3);font-size:13px}.scene-right{position:absolute;top:49%;right:32px;display:flex;gap:24px;color:var(--tx-3);font-size:13px}.scene-right span:last-child{opacity:.4}.scene-nav{will-change:transform}.scene-caption{transition:opacity .28s ease}.scene-stage{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:260px;height:345px}.scene-layer{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transform:translate3d(0,64px,0);pointer-events:none;will-change:transform,opacity}.scene-next{position:absolute;top:433px;left:12px;width:236px;height:314px;opacity:.26;object-fit:cover;pointer-events:none;will-change:transform,opacity}.scene-controls{position:absolute;left:calc(50% + 160px);top:calc(50% + 145px);display:flex;gap:6px;opacity:0;transition:opacity .2s}.home:hover .scene-controls,.scene-controls:focus-within{opacity:1}.scene-controls button{width:28px;height:28px;background:var(--bg-1);border-radius:50%;color:var(--tx-2)}.site-foot{position:fixed;z-index:4;bottom:0;left:0;right:0;display:flex;align-items:flex-end;justify-content:space-between;padding:12px 32px 8px;background:var(--bg);font-size:11px;color:var(--tx-3);gap:18px}.foot-links{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.foot-links button{padding:0;font-size:11px}.social{display:flex;gap:14px;align-items:center;font-size:18px}.foot-right{text-align:right;white-space:nowrap;font-size:11px}.demo-tag{font-size:10px;color:var(--tx-3);letter-spacing:.1px}
.overlay{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:24px;background:#0006;animation:fade-in .24s ease}.overlay.closing{animation:fade-out .2s ease forwards;pointer-events:none}.settings{position:relative;display:flex;width:min(1024px,100%);height:min(800px,100%);overflow:hidden;border-radius:16px;background:var(--bg);box-shadow:0 0 0 1px #1112;animation:rise .24s ease;color:var(--tx)}.settings-side{width:204px;flex:none;padding:20px 12px 16px;background:var(--side);border-right:1px solid var(--line);overflow:auto}.side-title{font-size:17px;font-weight:650;padding:3px 12px 15px}.section-nav{display:grid;gap:2px}.section-button{height:38px;padding:0 12px;display:flex;align-items:center;gap:11px;font-size:14.5px;border-radius:9px;text-align:left}.section-button svg{width:16px;color:var(--tx-2)}.section-button[aria-current="page"]{background:var(--selected);font-weight:600}.section-button:hover{background:var(--bg-1)}.settings-main{flex:1;min-width:0;display:flex;flex-direction:column}.settings-head{position:relative;flex:none;padding:20px 72px 16px 32px;min-height:84px}.settings-head h2{font-size:19px;line-height:1.35;margin:0 0 4px;font-weight:700}.settings-head p{margin:0;color:var(--tx-3);font-size:13.5px}.close{position:absolute;top:20px;right:16px;width:44px;height:44px;display:grid;place-items:center;border-radius:50%;font-size:21px;font-weight:350}.close span{background:var(--bg-1);display:grid;place-items:center;border-radius:50%;width:28px;height:28px;line-height:1}.close:hover span{background:var(--selected)}.settings-body{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:6px 32px 28px}.setting-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 24px;padding:16px 0;border-bottom:1px solid var(--line)}.setting-row:last-child{border-bottom:0}.row-text{flex:1 1 200px;min-width:0}.row-title{font-size:14.5px;font-weight:500;line-height:1.45}.row-desc{margin-top:3px;font-size:13.5px;line-height:1.6;color:var(--tx-3)}.row-control{flex:none;margin-left:auto;display:flex;align-items:center;gap:10px}.pill{display:inline-flex;align-items:center;justify-content:center;gap:3px;min-height:32px;padding:5px 13px;border:1px solid var(--line);border-radius:99px;font-size:13px;font-weight:600;background:var(--bg)}.pill:hover{background:var(--bg-1)}.pill.danger{color:var(--danger);border-color:color-mix(in srgb,var(--danger) 35%,transparent)}.chev{color:var(--tx-3);font-size:20px;line-height:1}.segments{display:inline-flex;gap:2px;padding:3px;border-radius:10px;background:var(--bg-1)}.segment{height:30px;padding:0 13px;white-space:nowrap;border-radius:7px;color:var(--tx-2);font-size:13.5px;font-weight:500}.segment[aria-checked="true"]{background:var(--bg);font-weight:600;color:var(--tx);box-shadow:0 1px 3px #0000000d}.profile{display:flex;align-items:center;gap:14px;padding:13px 0 18px;border-bottom:1px solid var(--line)}.avatar{width:48px;height:48px;display:grid;place-items:center;border-radius:50%;background:var(--bg-1);font-size:21px;font-weight:650}.profile-name{font-size:17px;font-weight:650}.profile-plan{color:var(--tx-3);font-size:12px;margin-top:2px}.field{height:36px;min-width:0;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--tx);padding:8px 12px;box-shadow:inset 0 1px 2px #00000003}.field::placeholder{color:var(--tx-3)}.name-field{width:240px}.field:focus{border-color:var(--tx-3)}.note{margin:16px 0 0;font-size:13.5px;line-height:1.65;color:var(--tx-3)}.back-sub{display:flex;gap:4px;align-items:center;margin:0 0 12px -4px;color:var(--tx-2);padding:0;font-size:13px}.method-row{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left;padding:17px 0;border-bottom:1px solid var(--line)}.method-row b{font-size:14px;font-weight:500}.method-row small{font-size:13px;color:var(--tx-3)}.method-detail{padding:18px 0;border-bottom:1px solid var(--line)}.method-detail-head{display:flex;justify-content:space-between;margin-bottom:12px}.method-detail-head b{font-weight:500}.method-detail-head button{font-size:12px;color:var(--tx-3)}.form-stack{display:grid;gap:12px}.form-stack .field{width:100%;height:45px;border-radius:12px;font-size:14px}.input-code{display:flex;gap:8px}.input-code .field{flex:1;width:0}.code-button{border:1px solid var(--line);border-radius:11px;font-size:13px;min-width:91px;padding:0 12px;color:var(--tx-2)}.primary{min-height:45px;width:100%;padding:10px 18px;border:1px solid var(--solid);border-radius:12px;background:var(--solid);color:var(--solid-fg);font-weight:600;font-size:14px}.primary:hover{opacity:.9}.form-note{font-size:12px;color:var(--tx-3);margin:0;line-height:1.7}.error{font-size:12px;color:#ba6464;margin:0;min-height:18px}.password-wrap{position:relative}.password-wrap input{padding-right:50px}.eye-button{position:absolute;right:6px;top:5px;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;color:var(--tx-3)}.provider-line{display:flex;align-items:center;justify-content:space-between;padding:17px 0;border-bottom:1px solid var(--line)}.provider-line .provider-title{display:flex;align-items:center;gap:10px}.switch{position:relative;width:37px;height:22px;border-radius:99px;background:var(--selected);padding:0;flex:none}.switch:before{content:"";position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #0002;transition:transform .16s}.switch[aria-checked="true"]{background:var(--tx)}.switch[aria-checked="true"]:before{transform:translateX(15px);background:var(--bg)}.quota-count{font-size:29px;font-weight:650;letter-spacing:-1px;padding-top:16px}.quota-track{height:5px;border-radius:10px;background:var(--selected);margin:12px 0 4px}.quota-track span{display:block;width:100%;height:100%;background:var(--tx);border-radius:10px}.school-note{margin:0 0 16px;color:var(--tx-3);font-size:13px}.school-group{margin:0 0 20px}.school-group h3{margin:0 0 9px;font-size:13px;font-weight:600}.school-options{display:grid;gap:6px}.school-option{display:flex;align-items:center;gap:10px;padding:11px 12px;border:1px solid var(--line);border-radius:10px;cursor:pointer}.school-option:has(input:checked){border-color:var(--tx-3);background:var(--bg-1)}.school-option input{accent-color:var(--tx);margin:0;flex:none}.school-option b{font-size:13px;font-weight:500}.school-option small{display:block;color:var(--tx-3);font-size:11.5px;line-height:1.5;margin-top:2px}.default-tag{font-size:10px;margin-left:6px;color:var(--tx-3);border:1px solid var(--line);border-radius:4px;padding:1px 4px}.mobile-settings-index{display:none}.mobile-back{display:none}
.login-overlay{background:color-mix(in srgb,var(--bg) 75%,transparent);backdrop-filter:blur(5px)}.login-card{position:relative;width:min(400px,100%);border:1px solid var(--line);border-radius:17px;background:var(--bg);box-shadow:0 24px 60px #00000038;padding:20px 22px 24px;max-height:calc(100svh - 32px);overflow:auto;animation:rise .24s ease}.login-card h2{font-size:16px;margin:0 0 13px;font-weight:650}.login-card .close{top:7px;right:6px;font-size:21px}.login-tabs{display:flex;padding:3px;background:var(--bg-1);border-radius:11px;margin-bottom:16px}.login-tab{flex:1;height:36px;font-size:13px;border-radius:8px;font-weight:500;color:var(--tx-2)}.login-tab[aria-selected="true"]{background:var(--bg);box-shadow:0 1px 4px #00000012;color:var(--tx);font-weight:600}.agree-row{display:flex;align-items:center;gap:7px;font-size:12px;line-height:1.6;margin:0;color:var(--tx)}.agree-row input{margin:0;accent-color:var(--tx);width:13px;height:13px}.agree-row button{text-decoration:underline;padding:0;font-size:12px}.separator{display:flex;align-items:center;gap:10px;color:var(--tx-3);font-size:11px;margin:24px 0 15px}.separator:before,.separator:after{content:"";height:1px;background:var(--line);flex:1}.provider-buttons{display:flex;justify-content:center;gap:10px}.provider-button{width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;font-size:21px;font-weight:600}.provider-button:hover{background:var(--bg-1)}.google-g{font-family:Arial,sans-serif;font-size:22px;font-weight:700;color:#4285f4}.login-bottom{text-align:center;color:var(--tx-3);font-size:11px;margin:16px 0 0}.demo-hint{border-radius:8px;background:var(--bg-1);padding:8px 10px;color:var(--tx-2);font-size:11px;margin:0 0 12px;line-height:1.6}.text-button{font-size:12px;padding:0;color:var(--tx-2);text-decoration:underline}.forgot{font-size:12px;color:var(--tx-3);text-align:right;padding:0}.simple-card{width:min(540px,100%);padding:28px;border-radius:16px;position:relative;background:var(--bg);box-shadow:var(--shadow);max-height:85svh;overflow:auto}.simple-card h2{font-size:21px;margin:0 44px 16px 0}.simple-card p{color:var(--tx-2);font-size:13px;line-height:1.8}.plans{display:grid;grid-template-columns:1fr 1fr;gap:14px}.plan-card{padding:20px 16px;border:1px solid var(--line);border-radius:12px}.plan-card.selected{border-color:var(--tx-3)}.plan-card h3{font-size:15px;margin:0 0 18px}.plan-card strong{display:block;font-size:25px;margin-bottom:12px}.plan-card p{font-size:12px;line-height:1.8;min-height:55px}.plan-card .primary{font-size:12px;min-height:36px}.modal-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:24px}.modal-actions button{width:auto;min-width:95px}.demo-line{margin-top:22px;font-size:11px;color:var(--tx-3)}
.history-page{max-width:940px;margin:142px auto 90px;padding:0 24px}.history-page h1{font-size:28px;letter-spacing:-.6px;margin:0 0 6px}.history-intro{font-size:12px;color:var(--tx-3);margin:0 0 27px}.history-toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:22px}.history-tabs{display:flex;gap:4px;margin-right:auto}.history-tab{padding:8px 13px;border-radius:8px;color:var(--tx-3);font-size:13px}.history-tab[aria-pressed="true"]{color:var(--tx);background:var(--bg-1);font-weight:600}.history-search{width:170px;min-height:34px;font-size:12px}.history-action{font-size:12px;color:var(--tx-2);padding:6px}.history-list{border-top:1px solid var(--line)}.history-record{display:flex;align-items:center;gap:18px;padding:23px 0;border-bottom:1px solid var(--line)}.record-content{flex:1}.record-content b{font-size:14px;font-weight:550}.record-content small{display:block;font-size:11px;color:var(--tx-3);margin-top:6px}.empty-history{padding:75px 0 90px;text-align:center;color:var(--tx-3)}.empty-history .empty-symbol{font-size:25px;color:var(--tx-3);margin-bottom:13px}.empty-history p{font-size:14px;margin:0 0 18px}.empty-history button{font-size:12px;border-bottom:1px solid var(--line);padding:3px 0;color:var(--tx-2)}.data-note{margin-top:26px;color:var(--tx-3);font-size:11px;line-height:1.8}.data-note b{font-size:12px;color:var(--tx-2);font-weight:500;display:block;margin-bottom:8px}.form-busy{opacity:.6}.status-saved{color:#60826b}.status-error{color:#b57171}#toast{position:fixed;bottom:29px;left:50%;transform:translate(-50%,12px);z-index:300;padding:11px 18px;max-width:calc(100% - 32px);border:1px solid var(--line);border-radius:12px;background:var(--bg);box-shadow:var(--shadow);color:var(--tx);font-size:12px;opacity:0;pointer-events:none;transition:opacity .18s,transform .18s;text-align:center}#toast.show{opacity:1;transform:translate(-50%,0)}
@keyframes fade-in{from{opacity:0}to{opacity:1}}@keyframes fade-out{to{opacity:0}}@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes menu-in{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}@keyframes image-in{from{opacity:.55;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:767px){.site-head{top:22px;left:20px;right:20px}.brand strong{font-size:36px}.brand small{font-size:11px;margin-top:6px}.account-bar{font-size:11px;gap:4px}.account-menu{width:255px}.scene-stage{width:220px;height:294px;top:45%}.scene-nav{left:20px;top:auto;bottom:102px;grid-template-columns:repeat(3,auto);gap:13px 18px}.scene-nav button{font-size:12px}.scene-caption{top:auto;bottom:164px;left:20px;font-size:11px}.scene-right{right:20px;top:auto;bottom:164px;font-size:11px;gap:14px}.scene-next{top:380px;left:9px;width:202px;height:269px}.scene-controls{display:none}.site-foot{padding:12px 20px;align-items:center}.foot-links{gap:10px}.foot-links .optional,.social,.foot-right .optional{display:none}.foot-right{font-size:9px}.demo-tag{font-size:9px}.overlay{padding:16px}.settings-overlay{padding:0}.settings{width:100%;height:100dvh;border-radius:0;animation:rise .26s ease}.settings-side{display:none}.settings-head{min-height:56px;padding:14px 54px;text-align:center;border-bottom:1px solid var(--line)}.settings-head h2{font-size:16px;margin:0}.settings-head p{display:none}.settings-head .close{top:6px;right:6px}.settings-body{padding:14px 16px 28px;padding-bottom:calc(28px + env(safe-area-inset-bottom))}.mobile-back{position:absolute;top:6px;left:6px;display:flex;align-items:center;gap:1px;height:44px;max-width:95px;font-size:14px;padding:0 4px;color:var(--tx-2)}.mobile-settings-index{display:grid;gap:1px}.mobile-settings-index button{display:flex;align-items:center;text-align:left;gap:12px;padding:16px 5px;border-bottom:1px solid var(--line);font-size:15px}.mobile-settings-index .chev{margin-left:auto}.row-title{font-size:14px}.row-desc{font-size:12.5px}.setting-row.segment-row{flex-direction:column;align-items:stretch;gap:10px}.segment-row .row-text{flex:none}.segment-row .row-control{margin-left:0}.segments{width:100%;display:flex}.segment{flex:1;min-width:0;padding:0 6px;font-size:12.5px}.name-field{width:168px}.setting-row{gap:10px 14px}.row-text{flex:1 1 150px}.back-sub{display:none}.profile{padding:10px 0 18px}.login-card{padding:20px;border-radius:16px}.plans{grid-template-columns:1fr}.plan-card p{min-height:0}.simple-card{padding:25px 20px}.history-page{margin-top:123px;padding:0 20px}.history-page h1{font-size:25px}.history-tabs{width:100%;margin-bottom:4px}.history-search{flex:1}.history-record{gap:9px}.history-action{padding:6px 2px}.history-record .pill{padding:4px 10px}.history-toolbar{gap:7px}.data-note{margin-bottom:36px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

@media(max-width:767px){.scene-nav,.scene-caption,.scene-right{display:none}.home-track{padding-bottom:24px}}