/* ============================================
   组件：顶栏导航 / 印章 / 卡片 / 按钮 / 时间线 / 页脚
   ============================================ */

/* ---------- 顶栏导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(246, 239, 224, .94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--paper-line);
}
.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 62px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: .7rem;
  font-family: var(--font-title);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--ink);
}
.nav-brand:hover { color: var(--cinnabar); }
.nav-brand .seal-sm { width: 30px; height: 30px; }

.nav-links {
  display: flex;
  gap: .4rem;
  list-style: none;
}
.nav-links a {
  display: block;
  padding: .35rem .9rem;
  font-size: .95rem;
  letter-spacing: .12em;
  color: var(--ink-soft);
  border-bottom: 2px solid transparent;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}
.nav-links a:hover { color: var(--cinnabar); }
.nav-links a.active {
  color: var(--cinnabar);
  border-bottom-color: var(--cinnabar);
}

/* ---------- 印章（保留：工具页类别章 / 卡片角标） ---------- */
.seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: var(--cinnabar);
  color: #f7ead8;
  font-family: var(--font-title);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: .1em;
  border-radius: 6px;
  transform: rotate(-6deg);
  box-shadow: var(--shadow-seal);
  border: 1px solid var(--cinnabar-deep);
  user-select: none;
  flex-shrink: 0;
}
.seal-sm {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--cinnabar);
  color: #f7ead8;
  font-family: var(--font-title);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .06em;
  border-radius: 4px;
  transform: rotate(-5deg);
  border: 1px solid var(--cinnabar-deep);
  user-select: none;
  flex-shrink: 0;
}

/* ---------- 简约头像（品牌位：顶栏 / 页脚 / Hero） ---------- */
.avatar {
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
  box-shadow: var(--shadow-1);
}
.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.avatar-sm { width: 30px; height: 30px; }
.avatar-lg {
  width: 74px;
  height: 74px;
  border: 2px solid var(--gold-soft);
  box-shadow: var(--shadow-seal);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  padding: .7rem 1.7rem;
  font-family: var(--font-title);
  font-size: 1rem;
  letter-spacing: .18em;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all .25s var(--ease);
  border: 1px solid transparent;
  text-align: center;
}
.btn-primary {
  background: var(--cinnabar);
  color: #f7ead8;
  border-color: var(--cinnabar-deep);
  box-shadow: var(--shadow-seal);
}
.btn-primary:hover {
  background: var(--cinnabar-deep);
  color: #fff;
  transform: translateY(-2px);
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--paper-line);
}
.btn-ghost:hover {
  border-color: var(--cinnabar);
  color: var(--cinnabar);
  transform: translateY(-2px);
}

/* ---------- 卡片 ---------- */
.card {
  background: var(--paper-deep);
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-1);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
  overflow: hidden;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--ink-soft);
  box-shadow: var(--shadow-2);
}
.card-pad { padding: 1.6rem 1.7rem; }

/* 卡片印章角标 */
.card .seal-corner {
  position: absolute;
  top: .9rem;
  right: .9rem;
  font-size: .72rem;
  opacity: .85;
  transform: rotate(-5deg);
  width: 40px;
  height: 40px;
}

/* 手撕纸圆角（模拟手工裁切） */
.edge-rough {
  border-radius: 6px 3px 7px 2px / 4px 7px 3px 6px;
}

/* ---------- 工具卡 / 软件卡 ---------- */
.tool-card { position: relative; display: block; color: inherit; }
.tool-card:hover { color: inherit; }
.tool-card .tool-icon {
  font-size: 1.9rem;
  margin-bottom: .9rem;
  display: block;
  width: 58px;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--cinnabar-soft);
  border: 1px solid var(--gold-soft);
  border-radius: 50%;
}
.tool-card h3 {
  font-size: 1.25rem;
  margin-bottom: .45rem;
  color: var(--ink);
}
.tool-card h3 .en {
  font-family: var(--font-num);
  font-size: .78rem;
  color: var(--ink-faint);
  letter-spacing: .08em;
  margin-left: .4rem;
  font-weight: 400;
}
.tool-card p {
  color: var(--ink-soft);
  font-size: .93rem;
  margin-bottom: .9rem;
}
.tool-card .tool-status {
  display: inline-block;
  font-size: .78rem;
  letter-spacing: .15em;
  color: var(--cinnabar);
  border: 1px solid var(--cinnabar);
  padding: .12rem .6rem;
  border-radius: 999px;
}
.tool-card .tool-status.soon {
  color: var(--gold);
  border-color: var(--gold);
}

.software-card { position: relative; }
.software-card .sw-tag {
  display: inline-block;
  font-size: .72rem;
  letter-spacing: .2em;
  color: var(--gold);
  border: 1px solid var(--gold-soft);
  padding: .1rem .5rem;
  border-radius: 2px;
  margin-bottom: .8rem;
}
.software-card h3 { font-size: 1.12rem; margin-bottom: .15rem; }
.software-card h3 .en {
  font-family: var(--font-num);
  font-size: .75rem;
  color: var(--ink-faint);
  font-weight: 400;
  margin-left: .35rem;
  letter-spacing: .05em;
}
.software-card .sw-desc {
  color: var(--ink-soft);
  font-size: .88rem;
  margin: .6rem 0 .85rem;
}
.software-card .sw-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem .9rem;
  font-size: .78rem;
  color: var(--ink-faint);
  border-top: 1px dashed var(--paper-line);
  padding-top: .7rem;
}
.software-card .sw-meta .dot { color: var(--gold); margin-right: .3rem; }

/* ---------- 作品卡 ---------- */
.work-card { position: relative; }
.work-card .work-badge {
  display: inline-block;
  background: var(--indigo);
  color: #e8e2d4;
  font-size: .72rem;
  letter-spacing: .25em;
  padding: .15rem .7rem;
  border-radius: 2px;
  margin-bottom: .9rem;
}
.work-card h3 { font-size: 1.35rem; margin-bottom: .5rem; }
.work-card .work-desc { color: var(--ink-soft); font-size: .93rem; margin-bottom: 1rem; }
.work-card .work-features {
  list-style: none;
  display: grid;
  gap: .35rem;
  margin-bottom: 1.1rem;
}
.work-card .work-features li {
  font-size: .88rem;
  color: var(--ink);
  padding-left: 1.1rem;
  position: relative;
}
.work-card .work-features li::before {
  content: "◆";
  position: absolute;
  left: 0;
  top: 0;
  font-size: .6rem;
  color: var(--gold);
}

/* ---------- 下载横幅 ---------- */
.cta-banner {
  background: linear-gradient(135deg, var(--indigo) 0%, #2c3846 100%);
  color: #e8e2d4;
  border-radius: var(--radius-card);
  padding: 3rem 2.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "归墟";
  position: absolute;
  right: -20px;
  bottom: -46px;
  font-family: var(--font-title);
  font-size: 11rem;
  color: rgba(232, 226, 212, .05);
  transform: rotate(-8deg);
  pointer-events: none;
}
.cta-banner h2 {
  font-size: 1.7rem;
  margin-bottom: .7rem;
  color: #f0ead9;
  letter-spacing: .14em;
}
.cta-banner p {
  color: rgba(232, 226, 212, .75);
  margin-bottom: 1.6rem;
  text-align: center;
  font-size: .95rem;
}
.cta-banner .btn-primary {
  background: var(--gold);
  border-color: #a9833f;
  color: #3a2c14;
  box-shadow: 0 2px 10px rgba(0, 0, 0, .25);
}
.cta-banner .btn-primary:hover {
  background: #d9b26b;
  color: #2b2010;
}

/* ---------- 更新日志时间线 ---------- */
.timeline {
  position: relative;
  max-width: 640px;
  margin: 0 auto;
  padding-left: 1.8rem;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--gold), var(--paper-line), transparent);
}
.timeline-item {
  position: relative;
  padding-bottom: 2rem;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -1.8rem;
  top: .55rem;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--gold);
  transform: translateX(-50%);
}
.timeline-item.latest::before {
  background: var(--cinnabar);
  border-color: var(--cinnabar);
  box-shadow: 0 0 0 4px var(--cinnabar-soft);
}
.timeline-ver {
  font-family: var(--font-num);
  font-size: 1.05rem;
  color: var(--cinnabar);
  font-weight: 600;
  letter-spacing: .04em;
}
.timeline-date {
  font-size: .78rem;
  color: var(--ink-faint);
  margin-left: .6rem;
  letter-spacing: .1em;
}
.timeline-item ul {
  list-style: none;
  margin-top: .5rem;
}
.timeline-item ul li {
  font-size: .9rem;
  color: var(--ink-soft);
  padding-left: 1rem;
  position: relative;
  line-height: 1.9;
}
.timeline-item ul li::before {
  content: "·";
  position: absolute;
  left: .15rem;
  color: var(--gold);
  font-weight: 700;
}

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--paper-line);
  margin-top: var(--gap-xl);
  padding: 2.2rem 0 2.6rem;
  background: var(--paper-deep);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .9rem;
  text-align: center;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--font-title);
  font-size: 1rem;
  letter-spacing: .2em;
  color: var(--ink);
}
.footer-copy {
  font-size: .8rem;
  color: var(--ink-faint);
  letter-spacing: .08em;
}
.footer-links {
  display: flex;
  gap: 1.4rem;
  font-size: .82rem;
}
.footer-links a { color: var(--ink-soft); }
.footer-links a:hover { color: var(--cinnabar); }
.footer-icp-wrap { margin-top: .4rem; }
.footer-icp {
  font-size: .74rem;
  color: var(--ink-faint);
  letter-spacing: .06em;
}
.footer-icp:hover { color: var(--cinnabar); }

/* ---------- 工具页组件 ---------- */
.tool-hero {
  text-align: center;
  padding: 4rem 0 2.6rem;
}
.tool-hero .seal { margin-bottom: 1.4rem; width: 62px; height: 62px; font-size: 1.15rem; }
.tool-hero h1 {
  font-size: 2.1rem;
  letter-spacing: .16em;
  margin-bottom: .7rem;
}
.tool-hero .sub {
  color: var(--ink-soft);
  max-width: 560px;
  margin: 0 auto;
  font-size: .95rem;
}
.tool-hero .back-link {
  display: inline-block;
  margin-top: 1.6rem;
  font-size: .85rem;
  letter-spacing: .15em;
  color: var(--ink-faint);
  border-bottom: 1px solid var(--paper-line);
  padding-bottom: .2rem;
}
.tool-hero .back-link:hover { color: var(--cinnabar); border-color: var(--cinnabar); }

.tool-placeholder {
  background: var(--paper-deep);
  border: 1px dashed var(--gold-soft);
  border-radius: var(--radius-card);
  padding: 3.2rem 2rem;
  text-align: center;
  margin-bottom: var(--gap-xl);
}
.tool-placeholder .ph-icon {
  font-size: 2.4rem;
  margin-bottom: 1rem;
  display: block;
  color: var(--gold);
}
.tool-placeholder h3 {
  font-size: 1.2rem;
  margin-bottom: .6rem;
  color: var(--ink);
  letter-spacing: .1em;
}
.tool-placeholder p {
  color: var(--ink-faint);
  font-size: .9rem;
  max-width: 480px;
  margin: 0 auto;
  text-align: center;
}

.tool-planned {
  display: grid;
  gap: 1rem;
  margin-bottom: var(--gap-xl);
}
.tool-planned .planned-item {
  background: var(--paper);
  border: 1px solid var(--paper-line);
  border-left: 3px solid var(--gold);
  padding: 1rem 1.3rem;
  border-radius: 0 var(--radius) var(--radius) 0;
}
.tool-planned .planned-item h4 {
  font-size: 1rem;
  color: var(--ink);
  margin-bottom: .25rem;
}
.tool-planned .planned-item h4 .tag {
  font-size: .68rem;
  color: var(--gold);
  border: 1px solid var(--gold-soft);
  padding: .05rem .45rem;
  border-radius: 2px;
  margin-left: .5rem;
  letter-spacing: .15em;
  vertical-align: 2px;
}
.tool-planned .planned-item p {
  font-size: .85rem;
  color: var(--ink-soft);
}