:root{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;--paper:#fbf4ea;--blue:#e0517a;--yellow:#ffe28a;--red:#e5372b;--ink:#2a2320;--muted:#7a6a60;--desk:#f0e3d8;--final-desk:#b93a5f;--hand:"Hand","KaiTi","STKaiti",cursive;color:var(--ink);background:var(--paper)}
@font-face{font-family:"Hand";src:url("fonts/hand.woff2?v=3") format("woff2");font-display:swap}
*{box-sizing:border-box}
body{margin:0;min-width:280px;transition:background .5s}
button{font:inherit;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none}
button:focus-visible{outline:3px solid var(--blue);outline-offset:5px}
button:disabled{cursor:default}
button:active:not(:disabled){transform:translateY(3px);box-shadow:none}
h1:focus{outline:none}
[hidden]{display:none!important}

.experience{max-width:480px;min-height:100svh;display:flex;flex-direction:column;margin:auto;padding:max(23px,env(safe-area-inset-top)) 26px max(22px,env(safe-area-inset-bottom));overflow:hidden;transition:background .5s,color .5s}
header{display:flex;justify-content:space-between;align-items:center;gap:12px}
.brand{font-size:14px;font-weight:750;display:flex;align-items:center;gap:7px;letter-spacing:.04em}
.brand-mark{color:var(--blue);display:inline-flex;width:26px;height:26px}
.asterisk{width:100%;height:100%;display:block}
.serial{font-family:monospace;font-size:12px;font-weight:600;color:var(--muted);letter-spacing:.06em}
.scene{margin-top:28px;flex:1;display:flex;flex-direction:column;animation:enter .4s ease both}
.chapter{display:flex;justify-content:space-between;align-items:center;font-size:12px;letter-spacing:.1em;font-weight:650;color:var(--muted);margin-bottom:14px}
.tiny-cross{font-size:23px;color:var(--ink)}
h1{font-size:clamp(49px,15vw,70px);line-height:1.09;letter-spacing:-.055em;font-weight:900;margin:0;position:relative}
h1 .name{font-size:20px;line-height:1.5;display:block;letter-spacing:0;font-weight:600;margin-bottom:10px}
.accent{color:var(--blue)}
.intro{font-size:15px;line-height:1.85;margin:19px 0 0;color:var(--muted)}
.playground{position:relative;min-height:230px;flex:1;width:100%;margin:15px 0 12px;display:flex;align-items:center;justify-content:center}
.bottom{padding-top:5px;margin-top:auto}
.status{color:var(--muted);font-size:13px;line-height:1.6;min-height:21px;margin:0 0 12px}
.primary{position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;gap:15px;min-height:58px;width:100%;border:1.5px solid var(--ink);border-radius:12px;background:var(--blue);color:#fff;padding:16px 20px;font-weight:650;font-size:16px;box-shadow:4px 4px 0 var(--ink);transition:transform .15s}
.primary span{font-size:25px;font-weight:400;line-height:1}
.primary:disabled{background:#e0e1df;color:#696c6b;box-shadow:3px 3px 0 #b4b6b0;border-color:#b4b6b0}
.primary.holding{transform:translateY(3px);box-shadow:none}
.primary.holding::before{content:"";position:absolute;inset:0;background:var(--red);transform:scaleX(var(--hold,0));transform-origin:left;z-index:0}
.primary>*{position:relative;z-index:1}
.secondary{min-height:44px;display:block;margin:14px auto 0;border:0;background:none;color:var(--muted);font-size:14px;padding:10px 20px;text-decoration:underline;text-underline-offset:5px}
footer{display:flex;justify-content:flex-end;gap:14px;margin-top:27px;color:var(--muted);font-size:11px;letter-spacing:.07em}
footer span:first-child{font-family:monospace;font-weight:600}

/* 试卷 */
.paper{width:100%;position:relative;background:#fff;color:var(--ink);border:1.5px solid var(--ink);box-shadow:5px 6px 0 var(--ink);padding:18px 20px 20px;background-image:repeating-linear-gradient(transparent 0 31px,#dfe0d8 31px 32px);background-position:0 12px;transform:rotate(-2deg)}
.paper-head{display:flex;justify-content:space-between;font-size:12px;font-weight:750;letter-spacing:.07em;padding-bottom:12px;border-bottom:1.5px solid var(--ink)}
.paper-fields{display:flex;justify-content:space-between;gap:16px;font-size:15px;margin-top:18px;font-weight:600}
.field{font-weight:800;display:inline-block;min-width:88px;border-bottom:1.5px solid var(--ink);text-align:center;line-height:1.3}
.field.short,.blank.short{min-width:52px}
.blank{display:inline-block;min-width:88px;border-bottom:1.5px solid var(--ink);height:1.2em;vertical-align:-3px}
.paper-note{font-size:13px;line-height:1.9;color:var(--muted);margin:22px 0 0;text-align:center}
.cover-paper{max-width:300px;transform:rotate(-4deg)}
.cover .sticker{position:absolute;font-size:14px;font-weight:700;border:1.5px solid var(--ink);padding:10px 14px;background:var(--yellow);box-shadow:3px 3px 0 var(--ink);z-index:2;right:0;top:8%;transform:rotate(9deg)}
.cover .spark{position:absolute;color:var(--blue);font-size:64px;line-height:1}
.cover .spark-a{left:0;bottom:2%;width:64px;height:64px;animation:turn 20s linear infinite}
.cover .spark-b{left:6%;top:6%;font-size:37px}

/* 答题 */
.question-card{width:100%;background:var(--paper);border:1.5px solid var(--ink);border-radius:18px;box-shadow:5px 6px 0 var(--ink);padding:20px 20px 18px;transform:rotate(-1deg)}
.question-kind{display:inline-block;font-size:12px;font-weight:750;letter-spacing:.1em;padding:4px 10px;border:1.5px solid var(--ink);border-radius:999px;background:var(--yellow)}
.question-body{font-size:clamp(22px,6.4vw,28px);line-height:1.4;font-weight:800;letter-spacing:-.02em;margin:14px 0 18px}
.options{display:grid;gap:10px}
.option{position:relative;text-align:left;min-height:52px;padding:14px 48px 14px 16px;border:1.5px solid var(--ink);border-radius:12px;background:#fff;font-size:15px;font-weight:650;box-shadow:3px 3px 0 var(--ink);transition:transform .15s,opacity .2s}
.option:disabled:not(.chosen){opacity:.4;box-shadow:none;transform:translateY(3px)}
.option.chosen{background:var(--yellow);transform:translateY(3px);box-shadow:none}
.option .mark{position:absolute;right:14px;top:50%;transform:translateY(-50%) rotate(-12deg);color:var(--red);font-size:30px;font-weight:900;font-style:normal;animation:pop-in .3s ease both}

/* 批改 */
.grading .paper{transform:rotate(-2deg)}
.paper-lines{list-style:none;margin:18px 0 0;padding:0;font-size:15px;font-weight:600}
.paper-lines li{display:flex;justify-content:space-between;align-items:center;min-height:30px}
.paper-lines li span::before{content:counter(line) ". ";counter-increment:line}
.paper-lines{counter-reset:line}
.tick{color:var(--red);font-size:28px;font-weight:900;font-style:normal;transform:rotate(-12deg) scale(0);opacity:0;transition:transform .25s cubic-bezier(.2,1.6,.4,1),opacity .2s}
.tick.on{transform:rotate(-12deg) scale(1);opacity:1}
.stamp-score{position:absolute;right:12px;top:48px;color:var(--red);font-family:Arial,sans-serif;font-size:74px;font-weight:900;line-height:1;letter-spacing:-.06em;transform:rotate(-16deg) scale(2.5);opacity:0;pointer-events:none;text-shadow:0 0 0 var(--red)}
.graded .stamp-score{animation:stamp .45s cubic-bezier(.2,1.2,.4,1) both;animation-delay:.1s}
.graded .tick{transform:rotate(-12deg) scale(1);opacity:1}

/* 刮开 */
.reveal-paper{transform:rotate(-2deg)}
.scratch{position:relative;margin:22px 0 4px;min-height:74px;display:flex;align-items:center;gap:8px;font-size:17px;font-weight:600;border:1.5px dashed #a6a79a;border-radius:8px;padding:0 14px;background:#fff;overflow:hidden}
.scratch-name{font-size:clamp(28px,8vw,34px);font-weight:900;letter-spacing:-.03em;color:var(--blue);opacity:.35;transition:opacity .4s}
.scratch.open .scratch-name{opacity:1;animation:pop-in .4s ease both}
.scratch canvas{position:absolute;inset:0;width:100%;height:100%;cursor:crosshair;touch-action:none;border-radius:6px;transition:opacity .4s}
.scratch canvas.gone{opacity:0;pointer-events:none}
.scratch canvas:focus-visible{outline:3px solid var(--blue);outline-offset:-3px}
.reveal .paper-note{margin-top:14px}
.reveal .paper-note b{font-size:20px;color:var(--red);font-family:Arial,sans-serif}
.paper-date{display:block;margin-top:6px;font-size:13px;font-weight:700;color:var(--blue);animation:enter .4s ease both}
.paper-date:empty{display:none}
.reveal{flex-direction:column;gap:20px}
.remark{width:100%;background:var(--yellow);color:var(--ink);border:2px solid var(--ink);border-radius:6px;box-shadow:5px 6px 0 var(--ink);padding:18px 20px;transform:rotate(1.5deg);animation:enter .5s ease both}
.remark-head{display:flex;justify-content:space-between;align-items:center;font-size:12px;font-weight:750;letter-spacing:.1em;border-bottom:1.5px solid #20201e55;padding-bottom:12px}
.remark-head span:last-child{color:var(--red);border:2px solid var(--red);border-radius:50%;width:30px;height:30px;display:grid;place-content:center;font-size:14px;transform:rotate(12deg)}
.remark p{font-size:15px;line-height:1.95;margin:16px 0 0;font-weight:600}
.remark-foot{display:flex;justify-content:space-between;gap:10px;font-size:12px;font-weight:700;margin-top:16px;padding-top:12px;border-top:1.5px dashed #20201e55}
.remark-foot span:last-child{color:var(--blue)}

/* 揭晓后整页变蓝 */
body[data-step="4"]{background:var(--blue)}
body[data-step="4"] .experience{background:var(--blue);color:var(--paper)}
body[data-step="4"] .brand-mark,body[data-step="4"] .serial,body[data-step="4"] .chapter,body[data-step="4"] .tiny-cross,body[data-step="4"] footer,body[data-step="4"] .intro,body[data-step="4"] .status,body[data-step="4"] .secondary{color:#e6e8ff}
body[data-step="4"] .accent{color:var(--yellow)}
body[data-step="4"] .primary{background:var(--yellow);color:var(--ink)}
body[data-step="4"] .scratch{border-color:transparent}

/* 手写字体：只用在最后一页 */
.remark p{font-family:var(--hand);font-size:26px;line-height:1.65;font-weight:400;letter-spacing:.03em}
.remark-head span:last-child{font-family:var(--hand);font-size:20px;padding-top:2px}
.scratch-name{font-family:var(--hand);font-weight:400;font-size:clamp(38px,10vw,46px);letter-spacing:.05em}
.paper-date{font-family:var(--hand);font-size:21px;font-weight:400}
/* 贴纸 */
.art{position:absolute;width:var(--size,78px);height:var(--size,78px);z-index:3;filter:drop-shadow(2px 0 0 #fff) drop-shadow(-2px 0 0 #fff) drop-shadow(0 2px 0 #fff) drop-shadow(0 -2px 0 #fff) drop-shadow(3px 4px 0 var(--ink));transform:rotate(var(--tilt,0deg));animation:float 4s ease-in-out infinite;animation-delay:var(--delay,0s);cursor:pointer;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}
.art svg{width:100%;height:100%;display:block}
.art.wiggle{animation:wiggle .5s ease both}
.art-cover-cat{right:-8px;bottom:-6px;--tilt:8deg}
.art-cover-dog{left:-6px;top:18%;--tilt:-12deg;--delay:-2s}
.art-question{right:-10px;top:-24px;--tilt:12deg}
.art-pen{right:-14px;bottom:-10px;--tilt:-8deg}
.art-grader{left:-8px;top:-18px;--tilt:-10deg;--delay:-1.5s}
.intro{position:relative}
.art-swim{right:-4px;top:-34px;--tilt:8deg;animation:drop .6s cubic-bezier(.2,1.4,.4,1) .3s both,float 4s ease-in-out infinite}
.art-paper-cat{right:-10px;top:-30px;--tilt:10deg;animation:drop .6s cubic-bezier(.2,1.4,.4,1) .4s both,float 4s ease-in-out infinite -1s}
.art-paper-flower{left:6px;bottom:2px;--tilt:-12deg;animation:drop .6s cubic-bezier(.2,1.4,.4,1) .5s both,float 4s ease-in-out infinite -2s}
.art-paper-tulip{right:8px;bottom:2px;--tilt:12deg;animation:drop .6s cubic-bezier(.2,1.4,.4,1) .55s both,float 4s ease-in-out infinite -3s}
.art-remark-dog{right:-10px;bottom:-30px;--tilt:10deg;animation:drop .6s cubic-bezier(.2,1.4,.4,1) .65s both,float 4s ease-in-out infinite -1.5s}
.art-remark-star{right:16px;top:-16px;--tilt:16deg;animation:drop .6s cubic-bezier(.2,1.4,.4,1) .7s both,float 4s ease-in-out infinite -.5s}
.reveal{padding-bottom:12px;gap:22px}
.reveal .paper-note{padding:0 56px}
.remark-head span:last-child{margin-right:44px}
.art-cake{right:-10px;top:calc(50% - var(--size,148px) / 2);--tilt:5deg;z-index:1;animation:drop .6s cubic-bezier(.2,1.4,.4,1) .2s both,float 4s ease-in-out infinite}
.candle-glow{position:absolute;right:-16px;top:calc(50% - 118px);width:160px;height:160px;border-radius:50%;background:radial-gradient(circle,rgba(255,214,107,.9),rgba(255,180,60,.45) 35%,rgba(255,214,107,0) 65%);animation:glow 1.3s ease-in-out infinite alternate;pointer-events:none;z-index:0;mix-blend-mode:screen}
.art .flame{transform-box:fill-box;transform-origin:50% 100%;animation:flicker 1.1s ease-in-out infinite}
.art .flame:nth-child(2){animation-delay:-.4s}
.art .flame:nth-child(3){animation-delay:-.8s}
@media(max-width:360px){.art-cake{--size:120px!important}.candle-glow{width:130px;height:130px;top:calc(50% - 98px)}}
.reveal .paper{z-index:1}
.reveal .remark{z-index:2;position:relative}
@keyframes float{0%,100%{translate:0 0}50%{translate:0 -6px}}
@keyframes wiggle{0%{rotate:0deg}25%{rotate:-14deg;scale:1.12}50%{rotate:12deg}75%{rotate:-6deg}100%{rotate:0deg}}
@keyframes flicker{0%,100%{transform:scale(1) rotate(-4deg)}35%{transform:scale(1.08,1.18) rotate(3deg)}70%{transform:scale(.94,.9) rotate(5deg)}}
@keyframes glow{from{opacity:.55;scale:.92}to{opacity:1;scale:1.08}}
@keyframes drop{from{opacity:0;translate:0 -40px;scale:.4}to{opacity:1;translate:0 0;scale:1}}

/* 吹蜡烛、猫说话 */
.art .flame.out{opacity:0;transform:scale(.2);transition:opacity .25s,transform .25s;animation:none}
.bubble{position:absolute;left:50%;bottom:calc(100% + 6px);translate:-50% 0;white-space:nowrap;background:#fff;color:var(--ink);border:1.5px solid var(--ink);border-radius:999px;padding:6px 12px;font-size:13px;font-weight:700;box-shadow:2px 3px 0 var(--ink);animation:enter .25s ease both;pointer-events:none;z-index:5}
.bubble::after{content:"";position:absolute;left:50%;top:100%;translate:-50% -1px;border:6px solid transparent;border-top-color:var(--ink)}
/* 游泳贴纸游走与游回 */
.art.swim-away{animation:swim-away 2.6s ease-in forwards!important;pointer-events:none}
.art.swim-back{animation:swim-back 2.4s ease-out both!important}
@keyframes swim-away{0%{transform:rotate(var(--tilt,0deg)) scaleX(1)}12%{transform:translate(0,0) scaleX(-1) rotate(0)}30%{transform:translate(-18vw,-6px) scaleX(-1) rotate(-6deg)}55%{transform:translate(-50vw,4px) scaleX(-1) rotate(4deg)}80%{transform:translate(-90vw,-5px) scaleX(-1) rotate(-6deg)}100%{transform:translate(-130vw,0) scaleX(-1) rotate(0)}}
@keyframes swim-back{0%{transform:translate(130vw,0) rotate(0)}30%{transform:translate(80vw,-6px) rotate(6deg)}60%{transform:translate(35vw,4px) rotate(-4deg)}100%{transform:translate(0,0) rotate(var(--tilt,0deg))}}
/* 关灯与花束 */
.dark{position:fixed;inset:0;z-index:20;background:#0d0a0f;opacity:0;transition:opacity 1s ease;display:grid;place-items:center;padding:24px;cursor:pointer}
.dark.off{opacity:1}
.dark.on{transition:opacity 2.4s ease;background:#1a1216}
.dark.bye{opacity:0;transition:opacity .6s ease}
.bouquet{position:relative;width:min(88vw,420px);text-align:center;opacity:0;transform:scale(.92) translateY(18px);transition:opacity 2.2s ease .2s,transform 2.2s cubic-bezier(.2,.8,.2,1) .2s}
.dark.on .bouquet{opacity:1;transform:none}
.bouquet::before{content:"";position:absolute;left:50%;top:38%;width:120%;height:120%;translate:-50% -50%;border-radius:50%;background:radial-gradient(circle,rgba(255,200,215,.35),rgba(255,200,215,0) 62%);pointer-events:none;animation:glow 2.6s ease-in-out infinite alternate}
.bouquet-svg{position:relative;width:min(70vw,300px);height:auto;display:block;margin:0 auto;filter:drop-shadow(0 18px 30px rgba(0,0,0,.45));animation:sway 5s ease-in-out infinite;transform-origin:50% 100%}
.bouquet-svg .head{transform-box:fill-box;transform-origin:50% 100%;opacity:0}
.dark.on .bouquet-svg .head{animation:bloom 1s cubic-bezier(.2,1.4,.4,1) both}
.dark.on .bouquet-svg .head:nth-of-type(1){animation-delay:.9s}
.dark.on .bouquet-svg .head:nth-of-type(2){animation-delay:.6s}
.dark.on .bouquet-svg .head:nth-of-type(3){animation-delay:1.1s}
.dark.on .bouquet-svg .head:nth-of-type(4){animation-delay:1.4s}
.dark.on .bouquet-svg .head:nth-of-type(5){animation-delay:1.55s}
.bouquet-svg .sprigs{opacity:0}
.dark.on .bouquet-svg .sprigs{animation:fade-in .8s ease 1.7s both}
.bouquet-svg .stems path{stroke-dasharray:360;stroke-dashoffset:360}
.dark.on .bouquet-svg .stems path{animation:draw 1.1s ease-out .2s forwards}
.bouquet-svg .leaves{opacity:0}
.dark.on .bouquet-svg .leaves{animation:fade-in .7s ease .9s both}
@keyframes bloom{from{opacity:0;transform:scale(.2) rotate(-8deg)}to{opacity:1;transform:none}}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes fade-in{from{opacity:0}to{opacity:1}}
@keyframes sway{0%,100%{rotate:-1.5deg}50%{rotate:1.5deg}}
.bouquet-line{position:relative;color:#fbeff2;font-family:var(--hand);font-size:26px;line-height:1.6;margin:22px 0 0}
.bouquet-sub{position:relative;color:#f5a3b7;font-size:15px;font-weight:700;letter-spacing:.06em;margin:8px 0 0}
.bouquet-hint{position:relative;display:block;margin-top:22px;color:rgba(255,255,255,.45);font-size:12px;letter-spacing:.1em}
@media(prefers-reduced-motion:reduce){.dark,.dark.on,.bouquet{transition:opacity .3s}.bouquet{transform:none}.bouquet::before,.bouquet-svg{animation:none}.bouquet-svg .head,.bouquet-svg .sprigs,.bouquet-svg .leaves{opacity:1;animation:none}.bouquet-svg .stems path{stroke-dashoffset:0;animation:none}}
/* 彩纸与动画 */
.cannon-layer{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:11}
.particles{position:fixed;inset:0;overflow:hidden;pointer-events:none;z-index:10}
.particle{position:absolute;top:-20px;width:9px;height:15px;animation:confetti var(--duration) ease-in forwards}
.scene.enter{animation:none}
.scene.enter>h1,.scene.enter>.intro,.scene.enter>.playground{animation:enter .4s ease both}
.scene.enter>.playground{animation-delay:.08s}
@keyframes turn{to{transform:rotate(360deg)}}
@keyframes enter{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
@keyframes pop-in{from{opacity:0;transform:scale(1.6) rotate(-12deg)}to{opacity:1;transform:scale(1) rotate(-12deg)}}
@keyframes stamp{from{opacity:0;transform:rotate(-16deg) scale(2.5)}60%{opacity:1;transform:rotate(-16deg) scale(.92)}to{opacity:1;transform:rotate(-16deg) scale(1)}}
@keyframes confetti{to{transform:translate(var(--drift),110vh) rotate(var(--spin));opacity:0}}

@media(min-width:600px){body{background:var(--desk)}.experience{margin:24px auto;border:1.5px solid #20201e;border-radius:24px;background:var(--paper);min-height:calc(100svh - 48px);box-shadow:9px 10px 0 #20201e;padding:26px 30px}body[data-step="4"]{background:var(--final-desk)}}
@media(max-height:760px) and (max-width:599px){.experience{padding-top:16px}.scene{margin-top:20px}h1{font-size:55px}.playground{min-height:215px}.intro{margin-top:13px}footer{margin-top:22px}}
@media(max-width:340px){.experience{padding-left:20px;padding-right:20px}h1{font-size:48px}.brand{font-size:12px}.paper,.question-card{padding:16px}.question-body{font-size:21px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}.particle{display:none}.art{animation:none;opacity:1}.candle-glow{animation:none}.stamp-score,.tick{opacity:0}.graded .stamp-score,.graded .tick{opacity:1;transform:rotate(-14deg)}.option .mark,.scratch.open .scratch-name{opacity:1}}