/* 第三套：青铜议事台。背景、艺术字、输入面板及两类按钮分别独立。
   配色变量集中于此，方便在素材确认后统一调整。 */
:root{
  --page-color:#ecf5ed;
  --ink:#215e57;
  --accent:#3f8f7f;
  --muted:#79968b;
  --soft:#9db7a9;
  --gold:#b89b45;
  --input-bg:#fffef2bd;
  --input-line:#aecab35c;
  --focus:#3f8f7f;
}
*{box-sizing:border-box}
html{scrollbar-width:none}
html::-webkit-scrollbar{display:none}
body{margin:0;background:var(--page-color);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",sans-serif}
h1,h2,h3,p{margin:0}
button,textarea{font:inherit}
button{cursor:pointer;-webkit-tap-highlight-color:transparent}
button:focus-visible,textarea:focus-visible{outline:2px solid var(--focus);outline-offset:4px}
[hidden]{display:none!important}
.history-page{position:relative;isolation:isolate;max-width:460px;width:100%;min-height:100svh;margin:auto;padding:0 22px 22px;overflow:hidden}
.scene-layer{position:absolute;inset:0;z-index:-2;width:100%;height:100%;object-fit:fill;pointer-events:none}
.history-header{position:relative;height:190px}
.title-group{position:absolute;left:50%;top:62px;width:330px;max-width:100%;transform:translateX(-50%);text-align:center}
.title-group h1{height:77px}
.title-group h1 img{display:block;width:100%;height:100%;object-fit:contain}
.history-brand{margin-top:10px;font-size:10px;line-height:1.6;letter-spacing:1px;color:var(--ink)}
.question-card{position:relative;display:flex;gap:18px;align-items:center;min-height:146px;margin:4px 0 0;padding:22px 21px 23px 17px;border:1px solid #ffffffcc;border-radius:29px 9px 29px 9px;background:#fffef2dc;box-shadow:0 7px 22px #5f917c0b}
.question-number{flex:0 0 35px;align-self:stretch;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;border-right:1px solid #bdd6c47a;padding-right:15px}
.question-number span{font:italic 24px Georgia,serif;color:var(--accent)}
.question-number b{writing-mode:vertical-rl;font-size:9px;font-weight:500;letter-spacing:3px;color:var(--muted)}
.question-kicker{font-size:9px;letter-spacing:1px;color:var(--muted);margin-bottom:7px}
.question-card h2{font-size:20px;font-weight:600;line-height:1.6;letter-spacing:.3px}
.question-card h2 strong{color:var(--accent);font-weight:700}
.opinion-panel{position:relative;isolation:isolate;margin:18px -4px 0;min-height:329px;padding:33px 31px 24px}
.panel-layer{position:absolute;inset:0;z-index:-1;width:100%;height:100%;object-fit:fill;pointer-events:none}
.opinion-heading{margin-bottom:13px}
.opinion-heading label{font-size:15px;font-weight:700;letter-spacing:1px}
.opinion-heading p{margin-top:6px;font-size:9px;line-height:1.5;color:var(--muted)}
.opinion-field{position:relative}
.opinion-field textarea{display:block;width:100%;height:121px;padding:12px 13px 26px;border:1px solid var(--input-line);border-radius:12px;resize:none;font-size:13px;line-height:1.8;color:var(--ink);background:var(--input-bg);box-shadow:inset 0 2px 6px #567a6508}
.opinion-field textarea::placeholder{color:var(--soft)}
.opinion-field>span{position:absolute;right:13px;bottom:9px;font-size:9px;color:var(--muted)}
.art-button{position:relative;isolation:isolate;display:block;border:0;padding:0;background:transparent}
.art-button img{position:absolute;inset:0;z-index:-1;width:100%;height:100%;object-fit:fill;pointer-events:none}
.art-button>span{display:flex;height:100%;align-items:center;justify-content:center;font-weight:700;line-height:1.4;letter-spacing:1px}
.art-button:active{translate:0 2px}
.action-row{display:flex;align-items:center;gap:12px;margin-top:12px}
.action-row .art-button{flex:1;min-width:0;height:49px}
.voices-button>span{color:var(--ink);font-size:11px}
.submit-button{width:155px;height:50px}
.submit-button>span{padding-bottom:1px;font-size:12px;color:#725e28;text-shadow:0 1px #fff7da}
.opinion-note{margin-top:7px;min-height:14px;text-align:center;font-size:8.5px;line-height:1.6;color:var(--muted)}
.history-footer{display:flex;align-items:center;justify-content:center;gap:10px;margin-top:24px;font-size:9px;letter-spacing:1.4px;color:var(--muted)}
.history-footer span{font-size:9px;color:var(--gold)}
.voices-heading{padding:4px 10px 0}
.section-kicker{font-size:9px;letter-spacing:2px;color:var(--gold)}
.voices-heading h2{margin-top:6px;font-size:28px;line-height:1.5;letter-spacing:2px;color:var(--accent)}
.sample-note{font-size:9px;margin-top:7px;color:var(--muted)}
.voices-list{margin-top:19px}
.voice-card{display:flex;gap:12px;align-items:flex-start;margin:0 3px 14px 0;padding:16px 18px 17px 13px;border:1px solid #f6fff5ba;border-radius:29px 25px 25px 7px;background:#fffff3cc;box-shadow:0 4px 14px #4776610a}
.voice-card:nth-child(2){margin-left:13px;margin-right:-1px;border-radius:25px 29px 7px 25px}
.voice-number{flex:0 0 27px;padding-top:1px;font:italic 24px Georgia,serif;color:var(--soft)}
.voice-card>div{flex:1;min-width:0}
.voice-card header{display:flex;align-items:center;justify-content:space-between;gap:5px;margin:2px 0 8px}
.voice-card h3{font-size:10px;font-weight:500;color:var(--accent)}
.voice-card header>span{font-size:8px;color:var(--muted)}
.voice-card p{font-size:12px;line-height:1.8;color:var(--ink)}
.back-button{margin:19px auto 0}
@media(max-width:360px){
  .history-page{padding-left:18px;padding-right:18px}
  .history-header{height:182px}
  .title-group{top:59px}
  .title-group h1{height:73px}
  .history-brand{font-size:9px}
  .question-card{padding-left:14px;padding-right:15px;gap:13px}
  .question-card h2{font-size:18px}
  .opinion-panel{padding-left:25px;padding-right:25px}
  .opinion-heading label{font-size:14px}
  .opinion-note{font-size:8px}
  .voice-card{padding-right:14px;gap:8px}
}
@media(prefers-reduced-motion:no-preference){
  section:not([hidden]){animation:appear .22s ease-out}
  @keyframes appear{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}
}

/* 与右侧青铜器错开，让标题保持清晰。 */
.title-group{left:0;top:75px;width:264px;transform:none;text-align:left}.title-group h1{height:85px}.history-brand{padding-left:3px;margin-top:0;font-size:9px;letter-spacing:.6px}.voices-button>span{color:#fff9dc;text-shadow:0 1px #265f54}.history-header{height:210px}
@media(max-width:360px){.title-group{top:70px;width:245px}.history-header{height:200px}}

/* 素材实际边缘留白补偿。 */
.opinion-panel{min-height:350px;padding-top:52px;padding-bottom:40px}.opinion-field textarea{height:105px}.action-row .art-button{height:55px}.opinion-note{color:#527b6a;font-size:9px;margin-top:4px}.history-footer{margin-top:18px}

.opinion-heading{padding-left:25px}.opinion-note{display:table;margin:3px auto 0;padding:4px 10px;max-width:100%;border-radius:12px;background:#f6fff0e6}.history-footer{display:none}
/* 20261024：第三组原素材替换。仅本套使用；无生成器物或竹简装饰。 */
.history-page{padding:0 22px 115px;min-height:844px}
.scene-layer{object-fit:cover}
.war-layer{position:absolute;z-index:-1;pointer-events:none;width:470px;max-width:none;height:auto;left:-12px;bottom:12px;opacity:.12}
.history-header{height:270px}
.title-group{top:35px;width:100%;left:0;text-align:center}
.title-group h1{height:81px}
.history-brand{font-size:10px;margin-top:3px;letter-spacing:1px;padding:0}
.vessel-layer{position:absolute;width:184px;height:auto;right:4px;top:151px;filter:drop-shadow(0 6px 4px #2e665a16)}
.glyph-layer{position:absolute;width:41px;height:auto;top:151px;left:7px;opacity:.95}
.topic-caption{position:absolute;top:167px;left:66px;font-size:18px;font-weight:600;letter-spacing:3px;color:#316f60}
.topic-caption span{display:block;font-size:9px;font-weight:400;letter-spacing:2px;color:#7c9b82;margin-bottom:9px}
.question-card{min-height:115px;padding:15px 18px;margin-top:0;background:#fffef1ed;border-radius:20px 8px 20px 8px}
.question-card h2{font-size:20px;line-height:1.5}
.opinion-panel{min-height:288px;margin-top:15px;padding:25px 25px 24px}
.opinion-heading{padding:0;margin-bottom:12px}
.opinion-heading label{font-size:15px}
.opinion-field textarea{height:108px;background:#f3f7ec;border-color:#c8d8bf}
.action-row{gap:12px;margin-top:14px}
.action-row .art-button{height:47px}
.art-button>span{font-size:12px;padding-bottom:3px}
.opinion-note{margin-top:12px;background:transparent;color:#5f7f6d}
.back-button{height:47px}
.voices-heading{padding-top:0}
.voices-heading h2{font-size:25px}
.voice-card{background:#fffef1ed}
@media(max-width:360px){.history-header{height:255px}.title-group{top:32px;width:100%}.vessel-layer{width:166px;right:0;top:145px}.glyph-layer{width:36px;top:147px}.topic-caption{left:54px;font-size:16px;top:165px}.question-card h2{font-size:18px}.opinion-panel{padding:24px 22px}.history-page{padding-left:18px;padding-right:18px}}
/* 人物叙事层：原PNG仅裁去外缘透明留白，不重绘、调色或更改服饰。 */
.history-page{padding-bottom:65px}
.history-header{height:318px}
.title-group{top:22px;z-index:5}
.title-group h1{height:73px}
.history-brand{margin-top:0}
.scene-stage{position:absolute;left:-2px;top:133px;width:350px;height:178px;pointer-events:none}
.hero-war{position:absolute;left:-24px;top:138px;width:390px;height:auto;opacity:.09;pointer-events:none;mask-image:linear-gradient(transparent,black 30%,black 80%,transparent)}
.character-layer{position:absolute;left:1px;top:119px;width:129px;height:190px;object-fit:contain;object-position:center bottom;filter:drop-shadow(0 5px 3px #214e4315);pointer-events:none;z-index:3}
.character-layer.speaking{display:none}
.showing-voices .character-layer.thinking{display:none}
.showing-voices .character-layer.speaking{display:block}
.vessel-layer{width:165px;right:2px;top:204px;z-index:2}
.glyph-layer{width:34px;right:0;left:auto;top:133px;opacity:.7}
.topic-caption{top:285px;left:145px;font-size:12px;letter-spacing:2px;z-index:4}
.topic-caption span{display:inline;font-size:8px;margin:0 8px 0 0}
.scene-dialogue{position:absolute;left:139px;top:141px;z-index:4;padding:11px 13px;border:1px solid #d7dbac;border-radius:16px 16px 16px 3px;background:#fff9dd;color:#577c61;font-size:12px;letter-spacing:.3px;box-shadow:0 3px 0 #d0deba3b}
.dialogue-voices{display:none}
.showing-voices .dialogue-write{display:none}
.showing-voices .dialogue-voices{display:inline}
.showing-voices .scene-dialogue{font-size:11px;padding-left:9px;padding-right:9px}
.question-card{min-height:101px;padding-top:12px;padding-bottom:12px}
.question-kicker{margin-bottom:3px}
.opinion-panel{min-height:276px;margin-top:13px;padding-top:22px;padding-bottom:20px}
.opinion-heading{margin-bottom:10px}
.opinion-heading p{margin-top:5px}
.opinion-field textarea{height:102px}
.opinion-note{margin-top:8px}
.war-layer{opacity:.075;bottom:3px}
@media(max-width:360px){.history-header{height:307px}.title-group{top:22px;width:100%}.character-layer{left:-5px;top:117px;width:119px;height:182px}.scene-stage{width:320px;height:167px;top:137px}.vessel-layer{width:148px;top:207px;right:0}.scene-dialogue{left:115px;top:141px;font-size:11px}.glyph-layer{top:129px;left:auto;width:28px}.topic-caption{left:126px;top:279px;font-size:11px}.topic-caption span{font-size:8px}.question-card h2{font-size:18px}}
/* 手绘皮肤的透明边缘与内容安全区。 */
.opinion-panel{min-height:295px;padding:44px 28px 25px}
.opinion-field textarea{height:94px;background:#f5f8edb8}
.action-row{margin-top:11px}
.action-row .art-button{height:47px}
.art-button>span{padding-bottom:0}
@media(max-width:360px){.opinion-panel{padding:44px 25px 25px}}

/* 弧形面板上缘安全区，避免标题压住手绘边框。 */
.opinion-panel{min-height:318px;padding-top:64px;padding-bottom:25px}.opinion-heading{padding-left:5px}@media(max-width:360px){.opinion-panel{padding-top:64px}}
/* 展览参与引导：独立HTML文字，不压缩输入区。 */
.participation-title{font-size:14px;line-height:1.55;letter-spacing:.2px;color:#286958;font-weight:700}
.opinion-heading .participation-copy{font-size:11px;line-height:1.65;margin-top:5px;color:#617e69}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.opinion-panel{min-height:344px;padding-top:68px}
.history-page{padding-bottom:38px}
@media(max-width:360px){.opinion-panel{padding-top:68px}.participation-title{font-size:13px}.opinion-heading .participation-copy{font-size:10.5px}}
/* 20261024 构图修订：右侧人物前景 -> 左侧器物 -> 议题 -> 填写，打破陈列式平排。 */
.history-header{height:274px;z-index:2;pointer-events:none}
.title-group{top:25px;left:0;width:282px;text-align:left;transform:rotate(-2.5deg);transform-origin:20% 60%}
.title-group h1{height:75px}
.history-brand{padding-left:9px;font-size:9px;letter-spacing:.6px}
.character-layer{left:auto;right:-22px;top:115px;width:168px;height:250px;z-index:6;object-position:right bottom;filter:drop-shadow(-5px 7px 4px #245a4218)}
.vessel-layer{left:0;right:auto;top:182px;width:183px;z-index:4;transform:rotate(-3deg);transform-origin:center bottom;filter:drop-shadow(3px 9px 3px #254a3520)}
.scene-stage{left:-58px;top:163px;width:320px;height:154px;transform:scaleX(-1);opacity:.75}
.hero-war{left:-91px;top:133px;width:477px;opacity:.075;transform:rotate(-5deg)}
.glyph-layer{left:-7px;right:auto;top:151px;width:39px;opacity:.6;transform:rotate(-8deg)}
.scene-dialogue{left:38px;top:133px;max-width:157px;padding:10px 12px;border-radius:17px 17px 3px 17px;transform:rotate(-3deg);z-index:5}
.topic-caption{left:82px;top:116px;font-size:10px;letter-spacing:2px;transform:rotate(-3deg);color:#6b8f74}
.topic-caption span{font-size:8px}
.question-card{width:calc(100% - 52px);min-height:124px;padding:29px 15px 15px 19px;margin:0 0 0 0;display:block;border-radius:23px 8px 25px 10px;background:#fffbea;box-shadow:4px 5px 0 #c3d9bd40;isolation:isolate}
.question-card::before{content:"";position:absolute;inset:-3px 0 0 -3px;z-index:-1;border:1px solid #d5ddbd;border-radius:20px 9px 24px 12px;transform:rotate(-2deg)}
.question-number{display:none}
.question-card h2{font-size:20px;line-height:1.55;letter-spacing:0}
.question-kicker{font-size:9px;margin-bottom:4px}
.opinion-panel{margin-top:2px;min-height:344px;padding-top:68px}
.panel-layer{transform:rotate(.7deg)}
.opinion-heading,.opinion-field,.action-row{position:relative;z-index:1}
.war-layer{left:40px;bottom:-6px;width:515px;transform:rotate(4deg);opacity:.07}
.showing-voices .history-header{height:275px}
.showing-voices .character-layer{top:111px;height:254px;width:174px;right:-25px}
.showing-voices .vessel-layer{left:-5px;top:185px;width:174px}
.showing-voices .scene-dialogue{top:137px;left:31px;max-width:160px;font-size:11px}
.voices-heading{position:relative;width:245px;padding:27px 0 0 7px;min-height:102px;z-index:1}
.voices-heading h2{font-size:25px}
.section-kicker{letter-spacing:.5px}
.voices-list{margin-top:13px}
.voice-card{width:calc(100% - 22px);margin:0 0 12px;border-radius:23px 17px 24px 8px}
.voice-card:nth-child(2){margin-left:22px;margin-right:0;border-radius:16px 25px 7px 25px}
.voice-card:nth-child(3){margin-left:7px;border-radius:23px 14px 24px 7px}
.back-button{margin-top:14px;margin-left:auto;margin-right:18px}
@media(max-width:360px){
 .history-header,.showing-voices .history-header{height:262px}
 .title-group{top:24px;left:0;width:256px}
 .character-layer{right:-25px;top:115px;width:151px;height:235px}
 .showing-voices .character-layer{right:-27px;top:111px;width:157px;height:239px}
 .vessel-layer{left:-3px;right:auto;top:181px;width:164px}
 .showing-voices .vessel-layer{left:-3px;top:184px;width:157px}
 .scene-dialogue{left:25px;top:133px;font-size:11px}
 .showing-voices .scene-dialogue{left:22px;top:136px;font-size:10px}
 .glyph-layer{left:-8px;right:auto;top:153px;width:34px}
 .topic-caption{left:64px;top:116px;font-size:10px}
 .question-card{width:calc(100% - 43px);padding-left:15px;padding-top:28px;min-height:123px}
 .question-card h2{font-size:18px}
 .voices-heading{width:220px;padding-top:25px}
 .opinion-panel{padding-top:68px}
}

/* 20261025：独立庭院背景，建筑与远山在人物后景，石阶留在页面下缘。 */
.scene-layer{object-fit:fill;opacity:1}
.scene-stage{opacity:.32}
.hero-war{opacity:.035}
.war-layer{display:none}
.opinion-note{background:#fffce8e8;border:1px solid #e1e8c8;border-radius:12px;padding:4px 10px}
html,body{overflow-anchor:none}
/* 列表页标题独立浅色衬底，避开后景屋檐和树影。 */
.voices-heading{padding:27px 12px 10px;background:#fffbeaf5;border:1px solid #ffffffb3;border-radius:21px 8px 22px 9px;box-shadow:3px 4px 0 #d7e3bd33}
@media(max-width:360px){.voices-heading{padding:25px 10px 10px}}

/* 20261027：新品牌及展板参与引导，正文独立于素材层。 */
.history-brand{font-size:10px;letter-spacing:.3px;white-space:nowrap}
.opinion-heading .participation-message{margin:0;font-size:16px;line-height:1.7;font-weight:700;color:#215e4f;letter-spacing:0;overflow-wrap:break-word}
@media(max-width:360px){
 .history-brand{font-size:9.5px;letter-spacing:0}
 .opinion-heading .participation-message{font-size:15px;line-height:1.7}
}