/* =========================================================
 * style.css — Marketing Portfolio V2.0
 * 视觉关键词：Modern / Minimal / Professional / Clean / Readable
 * ========================================================= */

/* ---------- Design Tokens ---------- */
:root {
  --bg:        #FAF9F7;   /* 米白页面底 */
  --surface:   #FFFFFF;   /* 卡片底 */
  --ink:       #17181C;   /* 主文字 */
  --ink-2:     #5A5D66;   /* 次级文字 */
  --ink-3:     #9A9DA6;   /* 弱化文字 */
  --line:      #E9E7E2;   /* 分割线 */
  --accent:    #C8552C;   /* 强调色（赭橘，克制使用） */
  --accent-soft: #FBEFE9; /* 强调色浅底 */
  --radius:    16px;
  --radius-s:  10px;
  --shadow:    0 1px 2px rgba(23,24,28,.04), 0 8px 24px rgba(23,24,28,.05);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC",
          "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body { height: 100%; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
img, video { max-width: 100%; display: block; }
a { color: inherit; }

.page {
  max-width: 1120px;
  margin: 0 auto;
  padding: 40px 32px 24px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* =========================================================
 * Profile Card
 * ========================================================= */
.profile-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 28px;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 32px;
}

.profile-avatar {
  width: 150px;
  height: 200px;
  border-radius: 20px;
  background: var(--accent-soft);
  border: 1px solid var(--line);
  overflow: hidden;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  font-weight: 600;
  color: var(--accent);
}
.profile-avatar img { width: 100%; height: 100%; object-fit: cover; }

.profile-name {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: .5px;
  line-height: 1.3;
}
.profile-name-en {
  font-size: 17px;
  font-weight: 500;
  color: var(--ink-3);
  margin-left: 8px;
}
.profile-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  margin-top: 6px;
}
.profile-tagline {
  font-size: 14px;
  color: var(--ink-2);
  margin-top: 8px;
  max-width: 560px;
}

.profile-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin-top: 8px;
  font-size: 13px;
  color: var(--ink-2);
}
.profile-meta .meta-item { display: inline-flex; align-items: baseline; gap: 6px; }
.profile-meta .meta-label {
  font-size: 11.5px;
  color: var(--ink-3);
  letter-spacing: .5px;
}

.profile-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  font-weight: 500;
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  transition: border-color .18s, background .18s, transform .12s;
  white-space: nowrap;
}
.action-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}
.action-btn:active { transform: scale(.97); }
.action-btn.primary {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}
.action-btn.primary:hover { background: var(--accent); border-color: var(--accent); color: #fff; }

/* =========================================================
 * Tab Bar（模块入口）
 * ========================================================= */
.tab-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 22px 0;
}

.tab-item {
  padding: 16px 12px;
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  transition: border-color .18s, box-shadow .18s, transform .12s;
}
.tab-item:hover { border-color: var(--ink-3); transform: translateY(-1px); }
.tab-item .tab-label {
  display: block;
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: 1px;
}
.tab-item .tab-sub {
  display: block;
  font-size: 11.5px;
  color: var(--ink-3);
  margin-top: 2px;
  letter-spacing: .4px;
  text-transform: uppercase;
}
.tab-item.active {
  border-color: var(--ink);
  box-shadow: inset 0 -3px 0 var(--accent);
}
.tab-item.active .tab-label { color: var(--ink); }

/* =========================================================
 * Content Area（唯一切换区）
 * ========================================================= */
.content-area {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px;
  min-height: 480px;
  animation: fadeIn .25s ease;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}
.content-area.switching { animation: fadeIn .25s ease; }

.section-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 24px;
}
.section-head h2 { font-size: 20px; font-weight: 700; letter-spacing: .5px; }
.section-head .en { font-size: 12px; color: var(--ink-3); letter-spacing: 1.5px; text-transform: uppercase; }

/* =========================================================
 * 工作经历 Timeline
 * ========================================================= */
.timeline { position: relative; padding-left: 24px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 5px; top: 8px; bottom: 8px;
  width: 1.5px;
  background: var(--line);
}
.exp-item {
  position: relative;
  padding: 0 0 26px 20px;
}
.exp-item:last-child { padding-bottom: 4px; }
.exp-item::before {
  content: "";
  position: absolute;
  left: -24px; top: 9px;
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--surface);
  border: 2.5px solid var(--accent);
}
.exp-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}
.exp-company { font-size: 16.5px; font-weight: 700; }
.exp-role {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 1px 10px;
  border-radius: 999px;
}
.exp-period { font-size: 13px; color: var(--ink-3); margin-left: auto; font-variant-numeric: tabular-nums; }
.exp-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.exp-tag {
  font-size: 12.5px;
  color: var(--ink-2);
  border: 1px solid var(--line);
  background: var(--bg);
  padding: 2px 12px;
  border-radius: 999px;
}

/* 了解更多 Accordion */
.exp-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 450;
  color: var(--ink-3);
  background: none;
  border: none;
  border-radius: 0;
  padding: 0;
  transition: color .2s, opacity .2s;
}
.exp-toggle:hover { color: var(--accent); opacity: .85; }

.exp-detail {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .28s ease;
}
.exp-detail.open { grid-template-rows: 1fr; }
.exp-detail-inner {
  overflow: hidden;
  margin-top: 18px;
  padding-top: 2px;
}
.exp-detail .bullet-list { gap: 10px; }
.exp-detail .bullet-list li {
  color: var(--ink-2);
  font-weight: 400;
  line-height: 1.7;
}

/* 通用 Bullet List */
.bullet-list {
  list-style: none;
  display: grid;
  gap: 6px;
}
.bullet-list li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  color: var(--ink-2);
  line-height: 1.6;
}
.bullet-list li::before {
  content: "";
  position: absolute;
  left: 2px; top: .62em;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
}
.bullet-list.accent li { color: var(--ink); font-weight: 500; }
.bullet-list li.placeholder { color: var(--ink-3); }

/* =========================================================
 * 案例作品（核心）
 * ========================================================= */
.cases-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 28px;
  align-items: start;
}

/* 左侧品牌导航（分组 + 折叠） */
.brand-nav { display: flex; flex-direction: column; gap: 4px; position: sticky; top: 24px; }

.group-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 10px 12px 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-3);
  letter-spacing: 1.5px;
  text-align: left;
  transition: color .15s;
}
.group-head:hover { color: var(--ink-2); }
.group-head.has-active { color: var(--accent); }
.group-head .chevron { font-size: 10px; transition: transform .2s; }
.group-head .chevron.closed { transform: rotate(-90deg); }

.group-list { display: flex; flex-direction: column; gap: 6px; margin-bottom: 6px; }
.group-list.collapsed { display: none; }
.brand-item {
  text-align: left;
  padding: 12px 16px;
  border-radius: var(--radius-s);
  border: 1px solid transparent;
  transition: background .15s, border-color .15s;
}
.brand-item:hover { background: var(--bg); }
.brand-item .b-name { display: block; font-size: 14.5px; font-weight: 600; }
.brand-item .b-cat  { display: block; font-size: 11.5px; color: var(--ink-3); margin-top: 1px; }
.brand-item.active {
  background: var(--accent-soft);
  border-color: rgba(200,85,44,.25);
}
.brand-item.active .b-name { color: var(--accent); }

/* 右侧案例详情：手机 + 文字 双栏 */
.case-detail {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 32px;
  animation: fadeIn .25s ease;
}

/* ---- 手机 Mockup ---- */
.phone-col { display: flex; flex-direction: column; align-items: center; gap: 14px; }
.phone-mockup {
  width: 258px;
  height: 528px;
  border-radius: 38px;
  background: #111216;
  padding: 10px;
  box-shadow: 0 12px 32px rgba(23,24,28,.16);
  position: relative;
  flex-shrink: 0;
}
.phone-mockup::before {           /* 刘海 */
  content: "";
  position: absolute;
  top: 10px; left: 50%;
  transform: translateX(-50%);
  width: 86px; height: 22px;
  background: #111216;
  border-radius: 0 0 14px 14px;
  z-index: 2;
}
.phone-screen {
  width: 100%; height: 100%;
  border-radius: 30px;
  overflow: hidden;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.phone-screen img { width: 100%; height: 100%; object-fit: contain; background: var(--bg); }
.phone-screen video { width: 100%; height: 100%; object-fit: contain; background: #000; }

/* 屏内占位 */
.screen-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--ink-3);
  font-size: 13px;
  padding: 0 24px;
  text-align: center;
}
.screen-placeholder .ph-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px dashed var(--ink-3);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
}
.screen-placeholder .ph-label { font-weight: 600; color: var(--ink-2); }

/* 缩略图 */
.thumb-strip {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 280px;
}
.thumb {
  width: 58px; height: 58px;
  border-radius: 12px;
  border: 1.5px solid var(--line);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: 16px;
  overflow: hidden;
  transition: border-color .15s, transform .12s;
  position: relative;
}
.thumb .t-label {
  font-size: 8.5px;
  color: var(--ink-3);
  line-height: 1.25;
  padding: 0 3px;
  text-align: center;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.thumb:hover { border-color: var(--ink-3); }
.thumb.active { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }

/* 操作说明（精简后的案例详情） */
.case-hint-inline {
  font-size: 13px;
  font-weight: 400;
  color: var(--ink-3);
  line-height: 1.5;
  margin-top: 8px;
}

/* ---- 案例文字信息 ---- */
.case-info { min-width: 0; }

.case-block { margin-bottom: 18px; }
.case-block h4 {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--ink-3);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.case-block h4::before {
  content: "";
  width: 14px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.case-block p { font-size: 14px; color: var(--ink-2); }
.case-block p.placeholder { color: var(--ink-3); font-style: normal; }

/* 一句话成果 */
.outcome-card {
  background: var(--accent-soft);
  border: 1px solid rgba(200,85,44,.18);
  border-radius: var(--radius-s);
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.6;
}
.outcome-card.placeholder { color: var(--ink-3); font-weight: 400; }

/* 成果数据卡片 */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 12px;
}
.metric-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  padding: 14px 16px;
}
.metric-card .m-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}
.metric-card .m-value.empty { color: var(--ink-3); font-size: 14px; font-weight: 500; }
.metric-card .m-label { font-size: 12px; color: var(--ink-2); margin-top: 4px; }

/* =========================================================
 * 专业能力 Capsule
 * ========================================================= */
.skill-group { margin-bottom: 26px; }
.skill-group:last-child { margin-bottom: 0; }
.skill-group h3 {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-3);
  letter-spacing: 1.5px;
  margin-bottom: 12px;
}
.capsules { display: flex; flex-wrap: wrap; gap: 10px; }
.capsule {
  font-size: 14px;
  font-weight: 500;
  padding: 8px 20px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg);
  transition: border-color .15s, background .15s, color .15s;
}
.capsule:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

/* =========================================================
 * 联系我
 * ========================================================= */
.contact-wrap {
  max-width: 520px;
  margin: 24px auto;
  text-align: center;
}
.contact-wrap .contact-lead { font-size: 15px; color: var(--ink-2); margin-bottom: 28px; }
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 22px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  background: var(--bg);
  transition: border-color .15s, transform .12s, background .15s;
}
.contact-card:hover { border-color: var(--accent); background: var(--accent-soft); transform: translateY(-2px); }
.contact-card .c-icon { font-size: 24px; }
.contact-card .c-label { font-size: 14.5px; font-weight: 600; }
.contact-card .c-sub { font-size: 12px; color: var(--ink-3); }

/* =========================================================
 * Footer / Toast
 * ========================================================= */
.site-footer {
  text-align: center;
  font-size: 12px;
  color: var(--ink-3);
  padding: 20px 0 4px;
  letter-spacing: .5px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 44px;
  transform: translateX(-50%) translateY(20px);
  background: var(--ink);
  color: #fff;
  font-size: 13.5px;
  padding: 10px 22px;
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s, transform .25s;
  z-index: 99;
  box-shadow: 0 8px 24px rgba(23,24,28,.25);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* =========================================================
 * 响应式
 * ========================================================= */
/* Tablet */
@media (max-width: 960px) {
  .page { padding: 28px 20px 20px; }
  .profile-card { grid-template-columns: auto 1fr; }
  .profile-actions {
    grid-column: 1 / -1;
    flex-direction: row;
    flex-wrap: wrap;
  }
  .case-detail { grid-template-columns: 1fr; }
  .phone-col { order: -1; }
  .cases-layout { grid-template-columns: 170px 1fr; }
}

/* Mobile */
@media (max-width: 768px) {
  .page { padding: 20px 14px 16px; }
  .section-head { margin-bottom: 14px; }
  .profile-card { padding: 22px 20px; gap: 16px; }
  .profile-avatar { width: 120px; height: 160px; border-radius: 16px; font-size: 26px; }
  .profile-name { font-size: 21px; }
  .profile-title { white-space: nowrap; font-size: 13.5px; }
  .profile-tagline { font-size: 13px; }
  .tab-bar { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .content-area { padding: 22px 18px; }

  /* 桌面左右布局在移动端不渲染；以下为 Accordion 专属样式 */
  .cases-layout { display: none; }

  .case-hint {
    font-size: 13.5px;
    font-weight: 400;
    color: var(--ink-3);
    letter-spacing: .3px;
    margin: 0 0 12px;
    line-height: 1.5;
  }

  .m-group { margin-bottom: 24px; }
  .m-group:last-child { margin-bottom: 0; }
  .m-group-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 8px;
  }

  .m-case { margin-bottom: 10px; }
  .m-case:last-child { margin-bottom: 0; }
  .m-case-head {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    text-align: left;
    padding: 13px 14px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-s);
    cursor: pointer;
    transition: background .15s, border-color .15s;
  }
  .m-case-head:hover { background: var(--bg); }
  .m-case-main { display: flex; flex-direction: column; flex: 1; min-width: 0; }
  .m-case-head .b-name { font-size: 15px; font-weight: 600; color: var(--accent); line-height: 1.3; }
  .m-case-head .b-cat { font-size: 11.5px; color: var(--ink-3); margin-top: 2px; }
  .m-case-head.active { background: var(--accent-soft); border-color: rgba(200,85,44,.3); }
  .m-case-head.active .b-name { color: var(--accent); }
  .m-chevron {
    flex-shrink: 0;
    margin-left: 8px;
    font-size: 13px;
    color: var(--ink-3);
    transition: transform .2s;
  }

  .m-detail {
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin: 8px 0 28px;
    padding-left: 12px;
    border-left: 2px solid var(--accent-soft);
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity .25s ease, transform .25s ease;
    animation: none;
  }
  .m-detail.show { opacity: 1; transform: none; }
  .m-detail .case-info { order: 1; }
  .m-detail .phone-col { order: 2; }
  .m-detail .case-hint-inline { margin-top: 4px; }

  /* 移动端手机 Mockup：适当宽度、居中，不固定大尺寸 */
  .m-detail .phone-mockup {
    width: 80%;
    max-width: 280px;
    height: auto;
    aspect-ratio: 258 / 528;
    margin: 0 auto;
  }
  .m-detail .phone-screen { height: 100%; }
  .m-detail .thumb-strip { max-width: 100%; }

  .exp-period { margin-left: 0; width: 100%; }
  .contact-grid { grid-template-columns: 1fr; }
}