:root{--bg:#111a17;--ink:#f1e7d6;--muted:#a8aaa0;--accent:#cd8a5c;--accent-bright:#e6a373;--line:rgba(239,232,214,.16);--research:#8bbeb8;--body:"Microsoft YaHei UI","Microsoft YaHei","PingFang SC",system-ui,sans-serif;--display:"Noto Serif CJK SC","Source Han Serif SC","Songti SC",SimSun,serif;color-scheme:dark;font-family:var(--body);font-synthesis:none;color:var(--ink);background:var(--bg)}
*{box-sizing:border-box}body{margin:0;min-width:280px}button,a,input,select{-webkit-tap-highlight-color:transparent}button,input,select{font:inherit}button{cursor:pointer}button,a,input,select{touch-action:manipulation}button{color:inherit}a{color:inherit;text-decoration:none}button:disabled{cursor:not-allowed}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid var(--accent-bright);outline-offset:5px}svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}[hidden]{display:none!important}::selection{background:#cd8a5c55}.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}
.atmosphere{position:fixed;inset:0;z-index:-1;background:radial-gradient(ellipse at 9% 7%,#89644342,transparent 48%),radial-gradient(ellipse at 94% 20%,#36665740,transparent 49%),radial-gradient(ellipse at 50% 116%,#29536644,transparent 51%),linear-gradient(165deg,#1b231e,#101815 61%,#10191b);pointer-events:none}.atmosphere:after{content:"";position:absolute;inset:0;opacity:.2;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Cpath fill='%23fff' opacity='.16' filter='url(%23n)' d='M0 0h180v180H0z'/%3E%3C/svg%3E")}
.page{min-height:100svh;display:flex;flex-direction:column;align-items:center;padding:42px 24px 25px}.brand{text-align:center;animation:rise .65s both}.brand-name{font-family:var(--display);font-size:38px;line-height:1.3;letter-spacing:2px;font-weight:500}.brand-subtitle{margin-top:11px;color:var(--muted);font-size:11px;letter-spacing:1px;display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px 12px}.edition{font-size:10px;letter-spacing:1px;border:1px solid var(--line);border-radius:5px;padding:3px 6px;color:#b9bbae;background:#ffffff03}.stage{width:min(780px,100%);text-align:center;margin-top:68px;animation:rise .8s .08s both}.controls{display:flex;align-items:center;flex-direction:column}.mode-switch{position:relative;display:flex;padding:5px;border:1px solid var(--line);border-radius:40px;background:#f1e7d607;width:330px;max-width:100%}.mode-thumb{position:absolute;top:5px;bottom:5px;left:5px;width:calc(50% - 5px);border-radius:30px;background:var(--accent);box-shadow:0 3px 14px #cd8a5c1c;transition:transform .32s cubic-bezier(.2,.8,.2,1),background .25s}.mode-option{position:relative;width:50%;border:0;border-radius:30px;background:transparent;padding:13px 14px;font-size:13px;font-weight:600;display:flex;align-items:center;justify-content:center;gap:9px;color:#a9aca0;transition:color .2s}.mode-option span{font-size:19px;line-height:20px}.mode-option svg{width:17px;height:17px}.mode-option.active{color:#231c15}.mode-option:disabled{opacity:.65}.mode-description{font-size:12px;line-height:1.7;color:var(--muted);margin:17px 0 19px;letter-spacing:.4px}.category-select{width:264px;max-width:100%;position:relative;display:flex;align-items:center}.category-select>span{position:absolute;left:17px;color:var(--ink);font-size:16px;pointer-events:none}select{appearance:none;width:100%;padding:12px 42px 12px 47px;color:#dcded1;border:1px solid var(--line);border-radius:24px;background:#eeecd406;font-size:12px;cursor:pointer;transition:background .2s}select:hover{background:#eeecd40b}select:disabled{opacity:.4}select option{background:#1b2721;color:var(--ink)}.select-chevron{position:absolute;right:16px;pointer-events:none;width:14px;height:14px;color:#9ea797}.research-note{height:43px;margin:0;display:flex;align-items:center;justify-content:center;gap:8px;font-size:11px;color:var(--research);letter-spacing:.4px}
.topic-area{min-height:254px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:50px 0 32px}.eyebrow{color:var(--accent);font-size:10px;font-weight:500;letter-spacing:3px;margin:0 0 24px;display:flex;align-items:center;justify-content:center;gap:9px}.status-dot{width:4px;height:4px;border-radius:50%;background:currentColor;box-shadow:0 0 9px #d59c6655}.topic{font-family:var(--display);font-size:clamp(36px,5.1vw,64px);line-height:1.45;letter-spacing:2px;font-weight:500;margin:0;max-width:100%;overflow-wrap:anywhere;text-wrap:balance;transition:opacity .15s}.topic.long{font-size:clamp(28px,4vw,47px);max-width:700px}.topic-hint{font-size:11px;color:#91998d;letter-spacing:1px;margin:20px 0 0;min-height:20px;line-height:1.7}.topic-area.spinning .topic{opacity:.6;filter:blur(.5px)}.topic-area.landed .topic{animation:land .4s both}.actions{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:12px}.button{border:1px solid transparent;border-radius:30px;padding:14px 21px;font-size:12px;font-weight:500;display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;transition:background .2s,transform .2s,box-shadow .2s,opacity .2s;white-space:nowrap;letter-spacing:.3px}.button svg{height:16px;width:16px}.primary{background:var(--accent);color:#251e17;box-shadow:0 6px 26px #cc8a5c1c}.primary:not(:disabled):hover{background:var(--accent-bright);box-shadow:0 7px 28px #cc8a5c35;transform:translateY(-2px)}.secondary{background:transparent;border-color:#e3ead42e;color:#d7dbcc}.secondary:not(:disabled):hover{background:#f1e7d60a;border-color:#e3ead455;transform:translateY(-2px)}.button:disabled{opacity:.32;box-shadow:none}.icon-button{display:grid;place-items:center;width:41px;height:41px;border:1px solid var(--line);border-radius:50%;background:#f1e7d606;color:#a7b0a0;flex-shrink:0;transition:background .2s,color .2s}.icon-button:not(:disabled):hover{background:#f1e7d611;color:var(--ink)}.icon-button svg{width:18px;height:18px}.icon-button:disabled{opacity:.3}.keyboard-hint{margin:20px 0 0;color:#a5aea080;font-size:10px;display:flex;gap:7px;align-items:center;justify-content:center;letter-spacing:.4px}.keyboard-hint>span{margin:0 4px}kbd{font:inherit;border:1px solid #a7b0a02d;border-radius:3px;padding:2px 5px;color:#abb5a68c;font-size:9px}
.guide{width:min(494px,100%);margin:66px auto 40px}.guide-toggle{display:flex;gap:13px;width:100%;align-items:center;justify-content:center;background:none;border:0;font-size:10px;color:#97a091;letter-spacing:1px;padding:8px 0}.guide-toggle:hover{color:#ced4c4}.guide-line{height:1px;background:linear-gradient(90deg,transparent,#a7b0a02e);flex:1}.guide-line:last-child{transform:rotate(180deg)}.guide-toggle svg{width:13px;height:13px;transition:transform .2s}.guide-toggle[aria-expanded=true] svg{transform:rotate(180deg)}.guide-content{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;padding:26px 0 5px;animation:rise .3s both}.guide-content>div{text-align:left}.step-number{font-family:Georgia,serif;font-size:12px;font-style:italic;color:var(--accent)}.guide-content h2{font-size:12px;font-weight:500;letter-spacing:1px;display:inline;margin-left:8px}.guide-content p{font-size:10px;line-height:1.9;color:#97a091;margin:10px 0 0}.footer{margin-top:auto;padding-top:28px;text-align:center;font-size:10px;letter-spacing:1px;color:#8f9c8c99;display:flex;flex-direction:column;gap:10px}.footer>a{font-size:9px;color:#8f9c8c88;letter-spacing:.4px}.footer>a:hover{color:#cbd5c2}
dialog{color:var(--ink);border:1px solid #e3ead421;background:#19231eea;border-radius:23px;padding:0;max-width:calc(100% - 32px);box-shadow:0 30px 100px #0007;backdrop-filter:blur(25px)}dialog::backdrop{background:#07100dd6;backdrop-filter:blur(10px)}dialog[open]{animation:rise .25s both}.settings-dialog{width:430px;max-height:calc(100svh - 40px)}.settings-content{padding:30px}.dialog-heading{display:flex;align-items:center;justify-content:space-between}.dialog-heading .eyebrow{justify-content:flex-start;margin:0 0 10px;font-size:9px;letter-spacing:2px}.dialog-heading h2{font-family:var(--display);font-size:28px;font-weight:500;letter-spacing:2px;margin:0}.close-button{align-self:flex-start;font-size:23px;width:32px;height:32px;font-weight:300}.settings-intro{font-size:11px;color:var(--muted);margin:16px 0 30px}.duration-field{margin-bottom:28px}.field-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;font-size:12px}.field-heading small{font-size:9px;color:var(--muted);margin-left:7px}.field-heading output{color:var(--accent-bright);font-variant-numeric:tabular-nums}input[type=range]{appearance:none;width:100%;height:4px;background:linear-gradient(to right,var(--accent) var(--fill,0%),#344238 var(--fill,0%));border-radius:8px;cursor:pointer;margin:0;display:block}input[type=range]::-webkit-slider-thumb{appearance:none;width:15px;height:15px;border-radius:50%;background:var(--accent-bright);box-shadow:0 0 0 4px #cd8a5c19}input[type=range]::-moz-range-thumb{width:15px;height:15px;border:0;border-radius:50%;background:var(--accent-bright)}.range-ends{display:flex;justify-content:space-between;color:#8d9b8a;font-size:9px;margin-top:12px}.sound-field{display:flex;align-items:center;justify-content:space-between;cursor:pointer;border-top:1px solid var(--line);padding-top:23px}.sound-field strong{font-size:12px;font-weight:500}.sound-field small{display:block;margin-top:8px;font-size:10px;color:var(--muted)}.sound-field input{position:absolute;opacity:0;width:1px;height:1px}.switch-visual{background:#3c4b3d;width:34px;height:20px;display:block;border-radius:20px;position:relative;transition:background .2s}.switch-visual:after{content:"";position:absolute;width:14px;height:14px;border-radius:50%;background:#d4dccd;left:3px;top:3px;transition:transform .2s}.sound-field input:checked+.switch-visual{background:var(--accent)}.sound-field input:checked+.switch-visual:after{transform:translateX(14px);background:#211c15}.sound-field input:focus-visible+.switch-visual{outline:2px solid var(--accent-bright);outline-offset:4px}.storage-note{font-size:9px;color:#8d9b8a;margin:25px 0 17px}.done-button{width:100%;min-height:44px}
.inline-timer{--timer-accent:var(--research);width:min(430px,100%);margin:0 auto 24px;padding:22px 25px 23px;text-align:left;border:1px solid #a6c7b429;border-radius:19px;background:#d2ead806;animation:rise .35s both}.timer-heading{display:flex;align-items:center;justify-content:space-between}.timer-heading .eyebrow{justify-content:flex-start;font-size:9px;letter-spacing:2px;color:var(--timer-accent);margin:0 0 7px}.timer-heading h2{font-size:13px;font-weight:500;letter-spacing:1px;margin:0}.timer-heading .icon-button{width:30px;height:30px;font-size:21px;font-weight:300}.timer-readout{display:flex;flex-direction:column;align-items:center;margin:18px 0 20px}#timer-digits{color:var(--timer-accent);font-family:Arial,"Helvetica Neue",var(--body);font-size:57px;font-weight:500;letter-spacing:0;font-variant-numeric:lining-nums tabular-nums;font-feature-settings:"lnum" 1,"tnum" 1;white-space:nowrap;line-height:1.15}#timer-caption{font-size:10px;letter-spacing:1px;color:var(--muted);margin-top:12px}.timer-progress{--progress:0;height:3px;border-radius:10px;background:#d9e8d714;overflow:hidden}.timer-progress:after{content:"";display:block;width:100%;height:100%;background:var(--timer-accent);transform-origin:left;transform:scaleX(var(--progress));transition:transform .1s linear}.timer-message{text-align:center;font-size:10px;color:#abb9a5;line-height:1.8;margin:13px 0 17px}.timer-actions{display:flex;justify-content:center;gap:9px;flex-wrap:wrap}.timer-actions .button{min-height:38px;padding:10px 16px;font-size:10px}.timer-actions .primary{background:var(--timer-accent)}.timer-actions .primary:hover{filter:brightness(1.12)}.speech-steps{display:flex;gap:8px;list-style:none;margin:0 0 18px;padding:0}.speech-steps li{flex:1;text-align:center;padding:9px 4px;border:1px solid var(--line);border-radius:7px;font-size:10px;color:#8b9a89;transition:background .3s,color .3s,border-color .3s}.speech-steps li span{font-family:Georgia,serif;font-size:9px;margin-right:4px;opacity:.6}.speech-steps li.current{color:#d5b48e;border-color:#d0925e55;background:#d0925e12}.speech-steps li.completed{color:#aac5a3;border-color:#78a36744;background:#78a3670b}.inline-timer[data-phase=speech]{--timer-accent:var(--accent-bright)}.inline-timer[data-phase=done]{--timer-accent:#bad0ae}.practice-panel.has-timer .topic-area{min-height:205px;padding:32px 0 24px}.stage:has(.has-timer)+.footer{padding-top:14px}.stage:has(.has-timer) .guide{margin-top:35px;margin-bottom:24px}body[data-mode=research] .mode-thumb{transform:translateX(100%);background:var(--research)}body[data-mode=research] #topic-status{color:var(--research)}
@media(max-width:600px){.inline-timer{padding:19px 18px 20px;margin-bottom:23px}.practice-panel.has-timer .topic-area{min-height:190px;padding:28px 0 22px}#timer-digits{font-size:51px}.timer-readout{margin:17px 0}.timer-actions{gap:7px}.timer-actions .button{padding:10px 13px}.timer-message{font-size:9px}.timer-heading h2{font-size:12px}}

.edition.profile-link{display:inline-flex;align-items:center;gap:5px;padding:4px 8px 4px 6px;border-radius:999px;color:#deded2;line-height:1.4;letter-spacing:.7px;background:#ffffff05;transition:color .2s,background .2s,border-color .2s}.profile-link .douyin-icon{width:13px;height:13px;stroke:none;overflow:visible}.profile-link[href]:hover{color:var(--ink);border-color:#cd8a5c80;background:#cd8a5c14}
@keyframes rise{from{opacity:0;transform:translateY(9px)}to{opacity:1;transform:translateY(0)}}@keyframes land{from{opacity:.2;transform:translateY(7px);filter:blur(3px)}to{opacity:1;transform:translateY(0);filter:blur(0)}}
@media(min-height:950px){.page{padding-top:54px}.stage{margin-top:84px}.topic-area{min-height:286px}.guide{margin-top:80px}}
@media(max-width:600px){.page{padding:32px 22px 23px}.brand-name{font-size:32px}.brand-subtitle{font-size:10px}.stage{margin-top:48px}.mode-switch{width:302px}.mode-option{font-size:12px;padding:12px 10px}.mode-description{font-size:11px;margin:17px 0}.category-select{width:242px}.topic-area{min-height:250px;padding:35px 0 30px}.topic{font-size:clamp(31px,8.8vw,48px);letter-spacing:1px;max-width:11em}.topic.long{font-size:30px}.eyebrow{font-size:9px;letter-spacing:2px;margin-bottom:23px}.topic-hint{font-size:10px;letter-spacing:.2px;max-width:29em}.actions{gap:8px;margin-top:5px}.button{font-size:11px;padding:13px 15px;gap:7px;min-height:45px}.actions>.icon-button{height:37px;width:37px}.keyboard-hint{display:none}.guide{margin:46px auto 32px}.guide-toggle{font-size:9px;gap:8px}.guide-content{gap:12px}.guide-content h2{font-size:11px;margin-left:5px}.guide-content p{font-size:9px}.footer{padding-top:20px;font-size:9px}.footer a{font-size:8px}.timer-content{padding:46px 20px 24px}.timer-content h2{font-size:25px}.timer-ring{width:230px;height:230px}#timer-digits{font-size:51px}.timer-message{font-size:11px}.settings-content{padding:27px}.field-heading small{font-size:8px}}
@media(max-width:360px){.page{padding-left:14px;padding-right:14px}.actions{gap:6px}.actions .button{padding:12px 11px;font-size:10px}.button svg{height:14px;width:14px}.topic.long{font-size:27px}.guide-content{grid-template-columns:1fr;gap:16px}.guide-content p{display:inline;margin-left:8px}.settings-content{padding:24px 20px}}
.sound-preview{margin-top:20px}.sound-preview .button{min-height:36px;padding:8px 14px;font-size:11px}#sound-status{margin:10px 0 0;font-size:10px;line-height:1.8;color:var(--muted)}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}