/* ==========================================================================
   逗比对话 · DOUBI —— 公共样式
   风格：美式漫画波普（亮白底 + 柠檬黄/火烈鸟粉/天蓝撞色 + 墨黑粗描边 +
        halftone 网点 + 放射集中线 + 对话气泡 + POW/BAM/哈哈 拟声词贴纸）
   布局：漫画分格 —— 页面像漫画分镜，粗黑边「格子」大小不一，格间留白如装订线。
   与前作（单列/宫格/瀑布流/IM/居中卡/手账/斜切/分屏/杂志/横滑）刻意彻底区分。
   ========================================================================== */

/* ------------------------------ 设计变量 ------------------------------ */
:root {
  --paper: #fffdf3;
  --paper-2: #fff;

  --yellow: #ffe814;
  --pink: #ff5ca8;
  --blue: #33c7ff;
  --red: #ff3b30;

  --ink: #14110f;
  --ink-2: #4a4640;
  --ink-3: #8b857c;

  --card: #ffffff;
  --line: #14110f;

  /* 漫画分格：粗黑描边 + 硬阴影 + 装订线间距 */
  --bd: 3px solid var(--ink);
  --bd-thin: 2px solid var(--ink);
  --hard: 7px 7px 0 var(--ink);
  --hard-sm: 4px 4px 0 var(--ink);
  --gutter: clamp(14px, 2.4vw, 22px);

  --r-lg: 12px;
  --r-md: 9px;
  --r-sm: 7px;
  --r-pill: 999px;

  --maxw: 940px;

  --font: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, -apple-system, 'Segoe UI', sans-serif;
  /* 拟声词/大标题用重量级窄体，漫画手写感 */
  --font-sfx: 'Impact', 'Haettenschweiler', 'Arial Narrow Bold', 'Arial Black', var(--font);
}

/* ------------------------------ 基础 ------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
html { height: 100%; }
[hidden] { display: none !important; }

body {
  margin: 0;
  min-height: 100vh; min-height: 100dvh;
  display: flex; flex-direction: column;
  font-family: var(--font);
  font-size: 15px; line-height: 1.72;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
/* 两种模式：落地页整页滚动；对话页锁死视口、内部滚动 */
body.mode-landing { }
body.mode-chat { height: 100vh; height: 100dvh; overflow: hidden; }
body.mode-chat .site-footer { display: none; }

a { color: var(--ink); }
h1, h2, h3 { font-weight: 900; letter-spacing: .2px; }

/* ------------------------------ 波普漫画背景 ------------------------------ */
.paperbg { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; background: var(--paper); }
/* 放射状集中线（漫画速度线） */
.paperbg .rays {
  position: absolute; top: -30%; left: 50%; width: 160vmax; height: 160vmax; transform: translateX(-50%);
  background: repeating-conic-gradient(from 0deg at 50% 50%,
    rgba(51,199,255,.10) 0deg 2.2deg, transparent 2.2deg 5.4deg);
  opacity: .6;
}
/* halftone 撞色网点：左上粉、右下黄 */
.paperbg .dots { position: absolute; width: 46vmax; height: 46vmax; opacity: .5; }
.paperbg .dots-a {
  top: -8vmax; left: -8vmax;
  background-image: radial-gradient(var(--pink) 26%, transparent 27%);
  background-size: 15px 15px;
  -webkit-mask-image: radial-gradient(circle at 30% 30%, #000 0%, transparent 62%);
          mask-image: radial-gradient(circle at 30% 30%, #000 0%, transparent 62%);
}
.paperbg .dots-b {
  bottom: -8vmax; right: -8vmax;
  background-image: radial-gradient(var(--yellow) 30%, transparent 31%);
  background-size: 16px 16px;
  -webkit-mask-image: radial-gradient(circle at 70% 70%, #000 0%, transparent 62%);
          mask-image: radial-gradient(circle at 70% 70%, #000 0%, transparent 62%);
}

/* ------------------------------ 拟声词贴纸（漫画 SFX） ------------------------------ */
.sfx {
  position: absolute; z-index: 4; pointer-events: none;
  font-family: var(--font-sfx); font-style: italic; font-weight: 900;
  letter-spacing: 1px; line-height: 1; text-transform: uppercase;
  -webkit-text-stroke: 2.4px var(--ink);
  paint-order: stroke fill;
  text-shadow: 4px 4px 0 rgba(20,17,15,.22);
}
.sfx-haha { top: -16px; right: 14px; font-size: clamp(30px, 6vw, 46px); color: var(--yellow); transform: rotate(-9deg); }
.sfx-pow  { top: -14px; right: 16px; font-size: clamp(24px, 4.6vw, 36px); color: var(--pink);   transform: rotate(7deg); }
.sfx-bam  { top: -14px; right: 18px; font-size: clamp(24px, 4.6vw, 36px); color: var(--blue);   transform: rotate(-6deg); }

/* 分格编号（漫画格角标） */
.panel-num {
  position: absolute; top: 10px; left: 12px; z-index: 2;
  font-family: var(--font-sfx); font-style: italic; font-size: 13px; letter-spacing: 1px;
  color: var(--ink-3); opacity: .8; pointer-events: none;
}

/* ------------------------------ 顶栏 ------------------------------ */
.topbar {
  position: relative; z-index: 3; flex: none;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px clamp(16px, 4vw, 30px);
}
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; color: inherit; }
.brand-mark {
  display: grid; place-items: center; width: 44px; height: 44px; font-size: 24px;
  background: var(--yellow); border: var(--bd); border-radius: 12px;
  box-shadow: var(--hard-sm); transform: rotate(-4deg);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-text strong { font-size: 19px; font-weight: 900; color: var(--ink); }
.brand-text em { font-style: italic; font-family: var(--font-sfx); font-size: 12px; letter-spacing: 3px; color: var(--pink); text-transform: uppercase; }
.site-nav { display: flex; align-items: center; gap: 8px; }
.nav-btn {
  appearance: none; border: var(--bd); background: #fff; color: var(--ink);
  font-family: inherit; font-weight: 800; font-size: 13px; padding: 7px 14px; border-radius: var(--r-pill);
  text-decoration: none; cursor: pointer; box-shadow: 2px 2px 0 var(--ink);
  transition: transform .12s, box-shadow .12s, background .12s;
}
.nav-btn:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--ink); background: var(--blue); }
.nav-btn:active { transform: translate(1px, 1px); box-shadow: 1px 1px 0 var(--ink); }

/* ------------------------------ 舞台 / 漫画页 ------------------------------ */
.stage { position: relative; z-index: 1; flex: 1 1 auto; min-height: 0; width: 100%; }
body.mode-chat .stage { display: flex; }
.landing { width: 100%; }
.wrap {
  width: 100%; max-width: var(--maxw); margin: 0 auto;
  padding: clamp(10px, 3vw, 22px) clamp(14px, 5vw, 28px) 48px;
  display: grid; gap: var(--gutter);
}

/* ------------------------------ 漫画分格通用 ------------------------------ */
.panel {
  position: relative;
  background: var(--card);
  border: var(--bd);
  border-radius: var(--r-lg);
  box-shadow: var(--hard);
  padding: clamp(18px, 3.2vw, 28px);
}

/* ------------------------------ 分格 1：主标题大格 ------------------------------ */
.hero {
  overflow: hidden; text-align: center;
  padding-top: clamp(30px, 5vw, 46px); padding-bottom: clamp(26px, 4vw, 40px);
  background:
    repeating-conic-gradient(from 0deg at 50% 34%, rgba(255,92,168,.09) 0deg 2.6deg, transparent 2.6deg 6deg),
    var(--card);
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 7px; margin: 0 0 14px; padding: 5px 15px;
  font-size: 12.5px; font-weight: 900; color: var(--ink);
  background: var(--blue); border: var(--bd); border-radius: var(--r-pill); box-shadow: 3px 3px 0 var(--ink);
}
.hero-title { margin: 0 auto 14px; max-width: 16em; font-size: clamp(26px, 5.6vw, 46px); line-height: 1.16; color: var(--ink); }
.hero-title b { color: var(--pink); position: relative; white-space: nowrap; }
.hero-title b::after {
  content: ""; position: absolute; left: -2px; right: -2px; bottom: -5px; height: 8px;
  background: var(--yellow); border: 2px solid var(--ink); border-radius: 6px; z-index: -1;
}
.hero-sub { margin: 0 auto 18px; max-width: 30em; color: var(--ink-2); font-size: 15px; }
/* 对话气泡 */
.speech {
  position: relative; display: inline-block; margin-top: 4px; padding: 10px 18px;
  font-weight: 800; font-size: 14px; color: var(--ink);
  background: var(--yellow); border: var(--bd); border-radius: 16px; box-shadow: var(--hard-sm);
}
.speech::after {
  content: ""; position: absolute; left: 34px; bottom: -13px; width: 18px; height: 14px;
  background: var(--yellow); border-right: var(--bd); border-bottom: var(--bd);
  border-bottom-right-radius: 4px; transform: skewX(-18deg);
}

/* ------------------------------ 分格 2：输入放大格 ------------------------------ */
.composer-slot { display: block; }
.composer { width: 100%; }
.composer-card {
  position: relative;
  padding: clamp(20px, 3.4vw, 30px) clamp(16px, 3vw, 24px) 16px;
  background:
    radial-gradient(var(--ink) 8%, transparent 9%) 0 0 / 16px 16px,
    var(--card);
  background-blend-mode: normal;
  border: var(--bd);
  border-radius: var(--r-lg);
  box-shadow: var(--hard);
}
/* 网点太密会盖住文字，用一层白蒙版压淡，只在边缘露出 halftone 感 */
.composer-card::before {
  content: ""; position: absolute; inset: 3px; border-radius: var(--r-md);
  background: rgba(255,255,255,.86); z-index: 0;
}
.composer-card > * { position: relative; z-index: 1; }
.composer-sticker {
  position: absolute; top: -18px; right: -12px; z-index: 3; display: grid; place-items: center;
  width: 48px; height: 48px; font-size: 24px; background: var(--pink); border: var(--bd); border-radius: 50%;
  box-shadow: var(--hard-sm); transform: rotate(8deg);
}
.composer-head { margin-bottom: 8px; }
.composer-label {
  display: inline-block; font-weight: 900; color: var(--ink); font-size: 15.5px;
  padding: 3px 12px; background: var(--yellow); border: var(--bd-thin); border-radius: var(--r-pill);
}
.composer-input {
  display: block; width: 100%; padding: 10px 4px; resize: none; border: none; outline: none; background: transparent;
  font-family: inherit; font-size: 15.5px; line-height: 1.7; color: var(--ink); max-height: 160px;
}
.composer-input::placeholder { color: var(--ink-3); }
.composer-foot {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 10px;
  border-top: var(--bd-thin); padding-top: 12px;
}
.composer-stage { font-size: 13px; font-weight: 700; color: var(--ink); padding: 4px 12px; background: #fff; border: var(--bd-thin); border-radius: var(--r-pill); }
.composer-stage b { color: var(--pink); }
.composer-actions { display: flex; align-items: center; gap: 10px; }
.stop-btn {
  appearance: none; cursor: pointer; font-family: inherit; font-weight: 800; font-size: 13px; color: var(--ink);
  background: #fff; border: var(--bd); border-radius: var(--r-pill); padding: 8px 14px; box-shadow: 2px 2px 0 var(--ink); transition: transform .12s, box-shadow .12s;
}
.stop-btn:hover { transform: translate(-1px,-1px); box-shadow: 3px 3px 0 var(--ink); }
.send-btn {
  appearance: none; cursor: pointer; font-family: var(--font-sfx); font-style: italic; font-weight: 900; letter-spacing: 1px; font-size: 16px; color: var(--ink);
  background: var(--yellow); border: var(--bd); border-radius: var(--r-pill); padding: 9px 22px;
  box-shadow: var(--hard-sm); transition: transform .12s, box-shadow .12s, background .12s;
}
.send-btn:hover { transform: translate(-1px, -1px); box-shadow: 5px 5px 0 var(--ink); background: var(--pink); color: #fff; }
.send-btn:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }
.send-btn:disabled { opacity: .5; cursor: not-allowed; transform: none; box-shadow: var(--hard-sm); }
.composer-tip { margin: 12px 4px 0; font-size: 12px; color: var(--ink-3); text-align: center; }

/* ------------------------------ 分格 3：关系阶段条 ------------------------------ */
.stage-bar { text-align: center; background: var(--blue); }
.stage-bar-title { display: block; font-weight: 900; color: var(--ink); font-size: 15px; margin-bottom: 12px; }
.stage-bar-title b { background: #fff; padding: 1px 10px; border: var(--bd-thin); border-radius: var(--r-pill); }
.state-chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 9px; }
.state-chip {
  appearance: none; cursor: pointer; font-family: inherit; font-weight: 800; font-size: 13px; color: var(--ink);
  background: #fff; border: var(--bd); border-radius: var(--r-pill); padding: 7px 15px; box-shadow: 2px 2px 0 var(--ink);
  transition: transform .12s, box-shadow .12s, background .12s, color .12s;
}
.state-chip:hover { transform: translate(-1px,-1px); box-shadow: 3px 3px 0 var(--ink); }
.state-chip.is-active { color: #fff; background: var(--ink); box-shadow: 2px 2px 0 var(--pink); }

/* ------------------------------ 分格 4：搞笑场景（小格阵列） ------------------------------ */
.scenes { overflow: hidden; }
.sec-title { display: flex; align-items: center; justify-content: center; gap: 10px; margin: 0 0 8px; font-size: clamp(20px, 3.6vw, 25px); color: var(--ink); }
.sec-title::before, .sec-title::after { content: "★"; color: var(--pink); font-size: 17px; -webkit-text-stroke: 1px var(--ink); }
.sec-sub { margin: 0 0 18px; text-align: center; color: var(--ink-3); font-size: 13px; font-weight: 700; }
.cat-tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 20px; }
.cat-tab {
  appearance: none; cursor: pointer; font-family: inherit; font-weight: 800; font-size: 13px; color: var(--ink);
  background: #fff; border: var(--bd-thin); border-radius: var(--r-pill); padding: 6px 15px; transition: transform .12s, background .12s, color .12s;
}
.cat-tab:hover { transform: translateY(-2px); }
.cat-tab.is-active { color: #fff; background: var(--pink); border-color: var(--ink); box-shadow: 2px 2px 0 var(--ink); }

/* 小格：粗黑边分格，撞色角标 */
.starters { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: var(--gutter); }
.starter {
  position: relative; display: block; width: 100%; text-align: left; cursor: pointer; font-family: inherit; color: var(--ink);
  padding: 16px 16px 15px; background: #fff; border: var(--bd); border-radius: var(--r-md);
  box-shadow: var(--hard-sm); transition: transform .14s, box-shadow .14s, background .14s;
}
.starter::before {
  content: ""; position: absolute; top: -1px; right: -1px; width: 26px; height: 26px;
  border-left: var(--bd); border-bottom: var(--bd); border-radius: 0 var(--r-md) 0 12px; background: var(--yellow);
}
.starter:nth-child(4n+1)::before { background: var(--yellow); }
.starter:nth-child(4n+2)::before { background: var(--pink); }
.starter:nth-child(4n+3)::before { background: var(--blue); }
.starter:nth-child(4n)::before   { background: #b6f36b; }
.starter:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 var(--ink); background: #fffdf3; }
.starter:active { transform: translate(1px, 1px); box-shadow: 2px 2px 0 var(--ink); }
.starter-tag {
  display: inline-block; margin-bottom: 10px; padding: 3px 12px; font-size: 11.5px; font-weight: 900; color: var(--ink);
  border: var(--bd-thin); border-radius: var(--r-pill); background: var(--yellow);
}
.starter:nth-child(4n+2) .starter-tag { background: var(--blue); }
.starter:nth-child(4n+3) .starter-tag { background: var(--pink); color: #fff; }
.starter:nth-child(4n)   .starter-tag { background: #b6f36b; }
.starter strong { display: block; font-size: 14.5px; font-weight: 800; line-height: 1.5; }

/* ------------------------------ 分格 5：逗比擅长 ------------------------------ */
.feat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: var(--gutter); margin-top: 6px; }
.feat {
  display: flex; align-items: flex-start; gap: 12px; padding: 16px;
  background: #fff; border: var(--bd); border-radius: var(--r-md); box-shadow: var(--hard-sm);
}
.feat-icon { flex: none; display: grid; place-items: center; width: 44px; height: 44px; font-size: 22px; background: var(--yellow); border: var(--bd); border-radius: 11px; }
.feat:nth-child(2) .feat-icon { background: var(--pink); }
.feat:nth-child(3) .feat-icon { background: var(--blue); }
.feat:nth-child(4) .feat-icon { background: #b6f36b; }
.feat-body strong { display: block; font-size: 15.5px; color: var(--ink); margin-bottom: 3px; }
.feat-body p { margin: 0; font-size: 12.5px; color: var(--ink-2); line-height: 1.55; }

/* ------------------------------ 分格 6：FAQ ------------------------------ */
.faq { overflow: hidden; }
.faq .sec-title { margin-bottom: 16px; }
.faq-item { margin-bottom: 12px; background: #fff; border: var(--bd); border-radius: var(--r-md); overflow: hidden; box-shadow: var(--hard-sm); }
.faq-item:last-child { margin-bottom: 0; }
.faq-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 16px;
  cursor: pointer; appearance: none; border: none; background: transparent; font-family: inherit; font-weight: 900; font-size: 14.5px; color: var(--ink); text-align: left;
}
.faq-arrow { flex: none; display: grid; place-items: center; width: 26px; height: 26px; font-weight: 900; color: var(--ink); background: var(--yellow); border: var(--bd-thin); border-radius: 7px; transition: transform .2s, background .2s; }
.faq-item.is-open .faq-arrow { transform: rotate(135deg); background: var(--pink); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .28s ease; }
.faq-item.is-open .faq-a { max-height: 320px; }
.faq-a p { margin: 0; padding: 0 16px 15px; font-size: 13.5px; color: var(--ink-2); }

/* ------------------------------ 对话视图 ------------------------------ */
.chatview { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(14px, 5vw, 28px); }
body.mode-chat .chatview { flex: 1 1 auto; min-height: 0; display: flex; flex-direction: column; }
.chatview-head { flex: none; display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 16px 0 10px; }
.chatview-back, .chatview-clear {
  appearance: none; cursor: pointer; font-family: inherit; font-weight: 800; font-size: 13px; color: var(--ink);
  background: #fff; border: var(--bd); border-radius: var(--r-pill); padding: 6px 14px; box-shadow: 2px 2px 0 var(--ink); transition: transform .12s, box-shadow .12s;
}
.chatview-back:hover, .chatview-clear:hover { transform: translate(-1px,-1px); box-shadow: 3px 3px 0 var(--ink); }
.chatview-state { font-size: 13px; font-weight: 700; color: var(--ink-2); }
.chatview-state b { color: var(--pink); }
.chat-list { flex: 1 1 auto; min-height: 0; overflow-y: auto; padding: 10px 2px 18px; display: flex; flex-direction: column; gap: 18px; }

/* ---- 消息气泡（漫画对话框 + 尾巴） ---- */
.msg { display: flex; gap: 11px; align-items: flex-start; }
.msg-user { flex-direction: row-reverse; }
.msg-avatar {
  flex: none; display: grid; place-items: center; width: 42px; height: 42px; font-size: 21px;
  background: var(--yellow); border: var(--bd); border-radius: 12px; box-shadow: 2px 2px 0 var(--ink);
}
.msg-user .msg-avatar { background: var(--blue); }
.msg-body { max-width: min(80%, 560px); }
.msg-user .msg-body { text-align: right; }
.msg-name { font-family: var(--font-sfx); font-style: italic; font-size: 12px; letter-spacing: 1px; color: var(--ink-3); margin: 2px 8px 4px; text-transform: uppercase; }
.msg-text {
  position: relative; display: inline-block; text-align: left; padding: 12px 16px;
  border-radius: 14px; background: #fff; border: var(--bd); box-shadow: var(--hard-sm); color: var(--ink);
}
/* AI 气泡尾巴（左下） */
.msg-ai .msg-text::before {
  content: ""; position: absolute; left: 16px; bottom: -11px; width: 16px; height: 13px;
  background: #fff; border-right: var(--bd); border-bottom: var(--bd);
  border-bottom-right-radius: 3px; transform: skewX(20deg);
}
/* 用户气泡（撞色 + 右下尾巴） */
.msg-user .msg-text { background: var(--pink); color: #fff; }
.msg-user .msg-text::before {
  content: ""; position: absolute; right: 16px; bottom: -11px; width: 16px; height: 13px;
  background: var(--pink); border-left: var(--bd); border-bottom: var(--bd);
  border-bottom-left-radius: 3px; transform: skewX(-20deg);
}
.msg-text p { margin: 0 0 8px; } .msg-text p:last-child { margin-bottom: 0; }
.msg-text ul { margin: 6px 0; padding-left: 20px; } .msg-text li { margin: 3px 0; }
.msg-text strong { color: var(--pink); }
.msg-user .msg-text strong { color: #fff; text-decoration: underline; }
.msg-note { color: var(--ink-3); font-size: 12.5px; }
.msg-error { color: var(--red); font-weight: 700; }

/* 打字动画 */
.typing { display: inline-flex; gap: 5px; padding: 2px 0; }
.typing i { width: 9px; height: 9px; border-radius: 50%; background: var(--pink); border: 1.5px solid var(--ink); animation: typing 1.2s ease-in-out infinite; }
.typing i:nth-child(2) { background: var(--yellow); animation-delay: .2s; }
.typing i:nth-child(3) { background: var(--blue); animation-delay: .4s; }
@keyframes typing { 0%,60%,100% { transform: translateY(0); opacity: .55; } 30% { transform: translateY(-6px); opacity: 1; } }

body.mode-chat .composer-slot#slotChat { flex: none; padding: 8px 0 14px; }

/* ------------------------------ 页脚 ------------------------------ */
.site-footer {
  flex: none; position: relative; z-index: 1; margin-top: auto;
  padding: 26px clamp(16px, 4vw, 30px) 30px; text-align: center;
  background: var(--ink); color: #fff; border-top: 4px solid var(--yellow);
}
.footer-tagline { margin: 0 0 8px; font-weight: 800; color: var(--yellow); font-size: 13.5px; }
.footer-company { margin: 0 0 10px; color: #fff; font-size: 13px; }
.footer-contact { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 18px; margin-bottom: 10px; font-size: 12.5px; color: #d9d5cf; }
.footer-beian { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 16px; font-size: 12px; }
.footer-beian a { color: #b9b4ac; text-decoration: none; } .footer-beian a:hover { color: var(--blue); text-decoration: underline; }

/* ------------------------------ Toast ------------------------------ */
.toast-wrap { position: fixed; left: 50%; bottom: 26px; transform: translateX(-50%); z-index: 50; display: flex; flex-direction: column; gap: 8px; align-items: center; pointer-events: none; }
.toast { padding: 10px 18px; font-size: 13.5px; font-weight: 900; color: var(--ink); background: var(--yellow); border: var(--bd); border-radius: var(--r-pill); box-shadow: var(--hard-sm); animation: toastIn .3s ease; }
.toast.out { animation: toastOut .5s ease forwards; }
@keyframes toastIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
@keyframes toastOut { to { opacity: 0; transform: translateY(12px); } }

/* ------------------------------ 关于页顶栏（about.html 复用） ------------------------------ */
.site-header {
  position: relative; z-index: 3; flex: none; display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px clamp(16px, 4vw, 30px); border-bottom: var(--bd); background: var(--yellow);
}

/* ------------------------------ 响应式 ------------------------------ */
@media (max-width: 560px) {
  .starters { grid-template-columns: 1fr; }
  .brand-text em { display: none; }
  .msg-body { max-width: 86%; }
  :root { --hard: 5px 5px 0 var(--ink); }
}

/* ------------------------------ 无障碍：减少动效 ------------------------------ */
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }