/* ================================================================
   v3 铅印版：去圆角、去投影、去渐变，改成「纸 + 墨 + 朱 + 细线」
   只用字号拉层级，用线代替卡片；数字用等宽，颜色三色以内。
   ================================================================ */

:root {
  --v3-paper: #f5f2e9;
  --v3-sheet: #fffdf7;
  --v3-ink: #131a20;
  --v3-ink2: #3d4b53;
  --v3-mute: #78858c;
  --v3-rule: #d5cdb9;
  --v3-rule-soft: #e6dfcd;
  --v3-red: #9b2c20;
  --v3-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --v3-serif: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "SimSun", "STSong", serif;
  --v3-mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Liberation Mono", monospace;
}

body {
  background: var(--v3-paper) !important;
  background-image: none !important;
  color: var(--v3-ink) !important;
  font-family: var(--v3-sans) !important;
  font-size: 15px;
  line-height: 1.75;
}

.wrap { max-width: 1160px !important; padding: 0 28px; }

/* 顶栏：墨底、朱线、方形印章 */
.topbar {
  background: var(--v3-ink) !important;
  border-bottom: 2px solid var(--v3-red) !important;
  backdrop-filter: none !important;
}
.topbar-inner { padding: 13px 0 !important; }
.brand .seal { border-radius: 2px !important; box-shadow: none !important; font-family: var(--v3-serif); }
.brand h1, .brand strong {
  font-family: var(--v3-serif) !important;
  font-size: 18px !important;
  letter-spacing: 0.01em;
  color: #f2f5f6 !important;
}
.brand p { color: #93a6ae !important; font-size: 11.5px !important; letter-spacing: 0.06em; }

.topnav { gap: 26px !important; }
.topnav a {
  color: #b9c8ce !important;
  font-size: 13px !important;
  letter-spacing: 0.06em;
  padding: 4px 0 !important;
  border-radius: 0 !important;
  background: none !important;
}
.topnav a:hover { color: #fff !important; background: none !important; }
.topnav a.active { color: #fff !important; background: none !important; border-bottom: 2px solid var(--v3-red); }

/* 首屏：字号 + 细线 */
.hero {
  display: block !important;
  gap: 0 !important;
  align-items: start;
  padding: 46px 0 40px !important;
  border-bottom: 1px solid var(--v3-rule);
  background: none !important;
  border-radius: 0 !important;
  box-shadow: none !important;
}
.eyebrow {
  font-family: var(--v3-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--v3-mute);
  margin: 0 0 18px;
}
.hero h2 {
  font-family: var(--v3-serif) !important;
  font-weight: 600 !important;
  font-size: clamp(32px, 4.2vw, 52px) !important;
  line-height: 1.14 !important;
  letter-spacing: 0.005em !important;
  color: var(--v3-ink) !important;
  margin: 0 !important;
}
.hero h2 span { display: block; }
.hero-copy > p:not(.eyebrow) {
  margin: 20px 0 0 !important;
  max-width: 40em;
  font-size: 15.5px !important;
  line-height: 1.85 !important;
  color: var(--v3-ink2) !important;
}
.hero-copy b { color: var(--v3-ink) !important; font-weight: 600; }

.flow {
  max-width: 780px;
  display: flex !important;
  align-items: center;
  gap: 10px !important;
  margin-top: 28px !important;
  padding-top: 14px;
  border-top: 1px solid var(--v3-rule-soft);
  font-family: var(--v3-mono);
  font-size: 11.5px !important;
  letter-spacing: 0.1em;
  color: var(--v3-ink2) !important;
}
.flow i { color: var(--v3-red); font-style: normal; margin-right: 5px; }
.flow em { flex: 1; height: 1px; background: var(--v3-rule); }

.hero-spec { border-top: 2px solid var(--v3-ink); padding-top: 10px; }
.spec-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--v3-rule);
  font-family: var(--v3-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--v3-mute);
}
.spec-head b { color: var(--v3-ink); font-weight: 600; letter-spacing: 0.08em; }
.hero-spec dl { margin: 0; padding: 0; }
.hero-spec dl > div {
  display: flex !important;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--v3-rule-soft);
}
.hero-spec dt {
  font-family: var(--v3-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--v3-ink2);
  margin: 0;
}
.hero-spec dd {
  font-family: var(--v3-mono);
  font-size: 12px;
  color: var(--v3-ink);
  margin: 0;
  white-space: nowrap;
}
.spec-foot { margin: 12px 0 0; font-size: 11.5px; line-height: 1.7; color: var(--v3-mute); }

/* 版式：左表单右说明 */
.layout {
  display: grid !important;
  grid-template-columns: minmax(0, 1fr) 330px !important;
  gap: 56px !important;
  margin-top: 40px !important;
  align-items: start;
}

.card {
  background: var(--v3-sheet) !important;
  border: 1px solid var(--v3-rule) !important;
  border-top: 2px solid var(--v3-ink) !important;
  border-radius: 0 !important;
  box-shadow: none !important;
}
.card-head {
  padding: 15px 24px !important;
  border-bottom: 1px solid var(--v3-rule) !important;
  background: none !important;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.card-head h3 {
  font-family: var(--v3-serif) !important;
  font-size: 17px !important;
  font-weight: 600 !important;
  letter-spacing: 0.02em;
  margin: 0;
}
.card-head .hint, .card-head span { font-size: 11.5px; color: var(--v3-mute); letter-spacing: 0.04em; }
.card-body { padding: 22px 24px 24px !important; }

.field { margin-bottom: 24px !important; }
.field > label {
  display: block !important;
  margin-bottom: 9px !important;
  font-size: 12.5px !important;
  font-weight: 600 !important;
  letter-spacing: 0.04em;
  color: var(--v3-ink) !important;
}
.field-note { display: block; margin-top: 4px; font-size: 11.5px; color: var(--v3-mute); font-weight: 400; }
.req { color: var(--v3-red) !important; }

.field input, .field textarea, .field select {
  border: 1px solid var(--v3-rule) !important;
  border-radius: 0 !important;
  background: #fff !important;
  font-family: var(--v3-sans) !important;
  font-size: 15px !important;
  padding: 11px 13px !important;
  box-shadow: none !important;
  transition: border-color 0.15s;
  color: var(--v3-ink) !important;
}
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: var(--v3-ink) !important;
  outline: none !important;
  box-shadow: none !important;
}
.field textarea {
  line-height: 1.85 !important;
  min-height: 168px !important;
  background: repeating-linear-gradient(#fff, #fff 27px, #f3eee0 28px) !important;
  background-attachment: local !important;
}

.chips { gap: 0 !important; flex-wrap: wrap; border-left: 1px solid var(--v3-rule); }
.chip {
  border: 1px solid var(--v3-rule) !important;
  border-left: 0 !important;
  border-radius: 0 !important;
  background: #fff !important;
  font-size: 13.5px !important;
  padding: 10px 18px !important;
  color: var(--v3-ink2) !important;
  letter-spacing: 0.02em;
}
.chip:hover { background: #faf6ea !important; color: var(--v3-ink) !important; }
.chip.is-on, .chip[aria-pressed="true"] {
  background: var(--v3-ink) !important;
  border-color: var(--v3-ink) !important;
  color: #fff !important;
}

.counter { font-family: var(--v3-mono); font-size: 11px !important; color: var(--v3-mute) !important; }

.switch-row {
  background: none !important;
  border: 1px solid var(--v3-rule) !important;
  border-radius: 0 !important;
  padding: 14px 16px !important;
}
.switch-row .txt b { font-size: 14px; }
.switch-row .txt span { font-size: 12px; color: var(--v3-mute); }
.switch { border-radius: 2px !important; }

.btn {
  border-radius: 0 !important;
  background: var(--v3-ink) !important;
  color: #fff !important;
  font-family: var(--v3-sans) !important;
  font-size: 13.5px !important;
  letter-spacing: 0.1em;
  padding: 12px 26px !important;
  box-shadow: none !important;
  border: 1px solid var(--v3-ink) !important;
}
.btn:hover { background: #243139 !important; border-color: #243139 !important; }
.btn.small { padding: 8px 16px !important; font-size: 12.5px !important; letter-spacing: 0.06em; }
.btn.danger { background: #fff !important; color: var(--v3-red) !important; border-color: #d9b8b2 !important; }

.form-foot { display: flex; align-items: center; gap: 16px; margin-top: 22px; flex-wrap: wrap; }
.form-foot .footnote { font-size: 11.5px; color: var(--v3-mute); }
.checkline { font-size: 12.5px !important; color: var(--v3-ink2) !important; line-height: 1.7; }

/* 右栏：只有线和小标题，没有卡片 */
.side-card {
  background: none !important;
  border: 0 !important;
  border-top: 1px solid var(--v3-rule) !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  padding: 16px 0 2px !important;
  margin: 0 0 30px !important;
}
.side-card h4, .side-card .card-head h3 {
  font-family: var(--v3-mono) !important;
  font-size: 11px !important;
  letter-spacing: 0.18em;
  font-weight: 600 !important;
  color: var(--v3-ink) !important;
  margin: 0 0 12px !important;
  border: 0 !important;
  padding: 0 !important;
}
.plain-list { margin: 0; padding: 0; list-style: none; }
.plain-list li {
  position: relative;
  padding: 9px 0 9px 16px;
  border-bottom: 1px dashed var(--v3-rule-soft);
  font-size: 13px !important;
  line-height: 1.7;
  color: var(--v3-ink2) !important;
}
.plain-list li:last-child { border-bottom: 0; }
.plain-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 5px;
  height: 5px;
  background: var(--v3-red);
}
.side-card .field { margin-bottom: 12px !important; }
.side-card .card-body { padding: 0 !important; }
.side-card .card-head { border: 0 !important; padding: 0 !important; background: none !important; }

/* 页脚 */
.footer {
  background: var(--v3-ink) !important;
  color: #93a6ae !important;
  border-top: 2px solid var(--v3-red);
  margin-top: 56px;
  padding: 26px 0 !important;
  font-size: 12px !important;
  letter-spacing: 0.03em;
}
.footer strong { color: #eef3f4 !important; }

/* 结果页、回执码 */
.result { border-radius: 0 !important; }
.code-box {
  border: 1px dashed var(--v3-rule) !important;
  border-radius: 0 !important;
  background: #fffdf6 !important;
  font-family: var(--v3-mono) !important;
  letter-spacing: 0.14em;
}
.tick { background: var(--v3-ink) !important; }

/* 后台 */
.stats .stat {
  border: 1px solid var(--v3-rule) !important;
  border-top: 2px solid var(--v3-ink) !important;
  border-radius: 0 !important;
  background: var(--v3-sheet) !important;
  box-shadow: none !important;
}
.stat .n { font-family: var(--v3-mono) !important; font-size: 30px !important; letter-spacing: -0.02em; }
.stat .n small { font-family: var(--v3-sans); font-size: 11px; letter-spacing: 0.06em; color: var(--v3-mute); }
.admin-bar h2, .admin-bar h1 { font-family: var(--v3-serif) !important; letter-spacing: 0.01em; }
.item-list { border-top: 1px solid var(--v3-rule); }
.item-card { border-top: 1px solid var(--v3-rule-soft) !important; }
.item-card:hover { background: #faf6ea !important; }
.item-card h4 { font-family: var(--v3-serif) !important; font-size: 15.5px !important; }

.badge, .pill, .tk-tag, .status {
  border-radius: 0 !important;
  font-size: 11.5px !important;
  letter-spacing: 0.06em;
  font-family: var(--v3-sans);
}

.trend { border-top: 1px solid var(--v3-rule-soft); }
.trend .bar span { border-radius: 0 !important; }

/* 弹层 */
.modal-mask { background: rgba(19, 26, 32, 0.62) !important; backdrop-filter: blur(2px); }
.modal {
  border-radius: 0 !important;
  border: 1px solid var(--v3-rule) !important;
  border-top: 2px solid var(--v3-ink) !important;
  background: var(--v3-sheet) !important;
  box-shadow: 0 18px 40px rgba(19, 26, 32, 0.22) !important;
}
.modal header h3, .modal .modal-head h3 { font-family: var(--v3-serif) !important; }
.modal footer { background: none !important; border-top: 1px solid var(--v3-rule) !important; }
.toast { border-radius: 0 !important; background: var(--v3-ink) !important; }

/* 登录页 */
.login-wrap { padding: 64px 0; }
.login-wrap .card { border-top: 3px solid var(--v3-red) !important; }

/* ---------- v3 手机端（必须排在 v3 基础规则之后） ---------- */
@media (max-width: 760px) {
  body { font-size: 15px; }
  .wrap { padding: 0 16px; }

  .topbar-inner { padding: calc(10px + env(safe-area-inset-top)) 0 10px !important; }
  .brand h1, .brand strong { font-size: 16px !important; }
  .topnav { display: none !important; }

  .hero {
    grid-template-columns: minmax(0, 1fr) !important;
    gap: 26px !important;
    padding: 24px 0 26px !important;
  }
  .eyebrow { margin-bottom: 12px; font-size: 10px; letter-spacing: 0.2em; }
  .hero h2 { font-size: clamp(27px, 8vw, 34px) !important; line-height: 1.2 !important; }
  .hero-copy > p:not(.eyebrow) { margin-top: 14px !important; font-size: 14.5px !important; line-height: 1.8 !important; }
  .flow { flex-wrap: wrap; gap: 8px 10px !important; margin-top: 18px !important; font-size: 10.5px !important; }
  .flow em { flex: 0 0 14px; }

  .hero-spec { border-top-width: 1px; padding-top: 8px; }
  .hero-spec dl > div { padding: 9px 0; }

  .layout {
    grid-template-columns: minmax(0, 1fr) !important;
    gap: 30px !important;
    margin-top: 26px !important;
  }
  .card-body { padding: 18px 16px 20px !important; }
  .card-head { padding: 13px 16px !important; }
  .chips { border-left: 0; }
  .chip { border: 1px solid var(--v3-rule) !important; flex: 1 1 auto; text-align: center; padding: 10px 14px !important; }
  .field textarea { min-height: 150px !important; }
  .btn { width: 100%; }
  .btn.small, .form-foot .btn { width: auto; }
  .footer { margin-top: 34px; padding: 22px 16px !important; }
}

/* --- v3 修正：真实视觉元素是 .chip span 与 nav 的内阴影 --- */
.chips { gap: 8px !important; border-left: 0 !important; }
.chip span {
  border-radius: 0 !important;
  border: 1px solid var(--v3-rule) !important;
  background: #fff !important;
  color: var(--v3-ink2) !important;
  font-size: 13.5px !important;
  padding: 10px 18px !important;
  letter-spacing: 0.02em;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.chip span:hover { border-color: var(--v3-ink) !important; color: var(--v3-ink) !important; }
.chip input:checked + span {
  background: var(--v3-ink) !important;
  border-color: var(--v3-ink) !important;
  color: #fff !important;
}
.chip input:focus-visible + span { outline: 2px solid var(--v3-red); outline-offset: 2px; }

.topnav a.active { box-shadow: none !important; border-bottom: 2px solid var(--v3-red); border-radius: 0 !important; }
.topnav a:hover { box-shadow: none !important; }

/* v3：类别按钮改等宽栅格；开关恢复胶囊但不投影 */
.chips {
  display: grid !important;
  grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
  gap: 8px !important;
}
.chip { display: block; }
.chip span { display: flex !important; justify-content: center; width: 100%; box-sizing: border-box; }

.switch input { border-radius: 999px !important; box-shadow: none !important; }
.switch input::after { box-shadow: none !important; }

@media (max-width: 760px) {
  .chips { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
}

/* v3：开关曾被 .field input 规则覆盖，单独恢复 */
.switch input {
  width: 46px !important;
  height: 26px !important;
  border: 0 !important;
  border-radius: 999px !important;
  background: #b9c4bf !important;
  box-shadow: none !important;
  padding: 0 !important;
  flex: 0 0 auto;
}
.switch input:checked { background: var(--v3-ink) !important; }
.switch input::after { width: 20px !important; height: 20px !important; background: #fff !important; box-shadow: none !important; }

/* v3：窄版式（登录页）与登录卡片 */
.wrap.narrow { max-width: 760px !important; }
.login-wrap { padding: 0 !important; margin: 44px 0; }
.login-wrap .card-head { justify-content: flex-start !important; }
.login-wrap .card-body { padding: 24px 24px 26px !important; }

/* v3：后台工具条按钮降调，只保留线 */
.admin-bar .btn, .admin-head .btn {
  background: transparent !important;
  color: var(--v3-ink) !important;
  border: 1px solid var(--v3-rule) !important;
  padding: 9px 16px !important;
  font-size: 12.5px !important;
}
.admin-bar .btn:hover, .admin-head .btn:hover { border-color: var(--v3-ink) !important; background: #fff !important; }
.admin-bar .btn.danger, .admin-head .btn.danger { color: var(--v3-red) !important; border-color: #d9b8b2 !important; }

/* 次级按钮：回执页「再提交一条」等，避免与主按钮同为实底 */
.actions .btn.ghost {
  background: transparent !important;
  color: var(--v3-ink) !important;
  border: 1px solid var(--v3-ink) !important;
}
.actions .btn.ghost:hover {
  background: rgba(20, 20, 20, 0.06) !important;
  color: var(--v3-ink) !important;
}

/* ---------- 后台统计 ---------- */
.stat-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.mini-title {
  margin: 0 0 14px;
  font-family: var(--v3-sans) !important;
  font-size: 12px !important;
  font-weight: 400 !important;
  letter-spacing: 0.14em;
  color: var(--v3-muted);
}
.dist-row {
  display: grid;
  grid-template-columns: 92px 1fr 64px;
  align-items: center;
  gap: 12px;
  padding: 7px 0;
  border-bottom: 1px dashed var(--v3-line);
}
.dist-row:last-child { border-bottom: 0; }
.dist-name { font-size: 13px; color: var(--v3-ink); }
.dist-bar { display: block; height: 8px; background: rgba(31, 41, 51, 0.07); }
.dist-bar i {
  display: block;
  height: 100%;
  background: var(--v3-ink);
  transform-origin: left center;
  transition: width 0.5s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.dist-v {
  font-family: var(--v3-mono);
  font-size: 12px;
  text-align: right;
  color: var(--v3-ink);
}
.dist-v em {
  display: inline-block;
  min-width: 38px;
  margin-left: 6px;
  font-style: normal;
  font-size: 11px;
  color: var(--v3-muted);
}

@media (max-width: 760px) {
  .stat-cols { grid-template-columns: 1fr; gap: 26px; }
  .dist-row { grid-template-columns: 72px 1fr 58px; gap: 9px; }
}

/* 首页公告：保留换行，读起来像一段正式说明 */
#notice {
  white-space: pre-line;
  max-width: 46em;
  line-height: 1.95;
}

/* 后台「二维码与张贴」卡片 */
.qr-body { display: flex; gap: 28px; align-items: flex-start; }
.qr-preview {
  flex: 0 0 auto;
  padding: 12px;
  background: #ffffff;
  border: 1px solid var(--v3-line, #d7d2c6);
}
.qr-preview canvas { display: block; width: 232px; height: 232px; image-rendering: pixelated; }
.qr-side { flex: 1 1 auto; min-width: 0; }
.qr-url { margin: 0 0 8px; }
.qr-url code {
  font-family: var(--v3-mono, Consolas, monospace);
  font-size: 15px;
  background: rgba(20, 20, 20, 0.05);
  padding: 2px 8px;
}
.qr-note { margin: 0 0 14px; line-height: 1.85; max-width: 52em; }
.qr-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 10px; }
.qr-actions select { width: auto; padding: 6px 10px; font-size: 13px; }
@media (max-width: 760px) {
  .qr-body { flex-direction: column; align-items: stretch; gap: 16px; }
  .qr-preview { align-self: center; }
  .qr-preview canvas { width: 200px; height: 200px; }
}

/* 二维码卡片里的次级按钮与下拉 */
.qr-actions .btn.ghost {
  background: transparent !important;
  color: var(--v3-ink) !important;
  border: 1px solid var(--v3-ink) !important;
}
.qr-actions .btn.ghost:hover { background: rgba(20, 20, 20, 0.06) !important; }
.qr-actions label { display: inline-flex; align-items: center; gap: 8px; }
.qr-actions select {
  border: 1px solid var(--v3-ink);
  background: #fff;
  border-radius: 0;
  font-family: inherit;
}