/* ============================================================
   攸攸康索 yoyocaso
   ─────────────────────────────────────────────
   配色借鉴 mattdavella.com：
     白底 + 暖黑字 + 薄荷绿点缀
     只用 3 个色值，强调色只出现在按钮与数据上
   排版：
     一组无衬线，靠字号与字重建立层级
     1px hairline 代替卡片、阴影、圆角
     留白即结构
   ============================================================ */

:root {
  /* ── 色 ───────────────────────────────────── */
  --paper:     #FFFFFF;   /* 主底 */
  --paper-2:   #F7F7F7;   /* 次级底 */
  --ink:       #292929;   /* 正文（暖黑） */
  --ink-2:     #60605D;   /* 次级文字 */
  --ink-3:     #71716D;   /* 弱化文字 */
  --mint:      #90E3B0;   /* 强调：薄荷绿 */
  --mint-hi:   #7AD9A3;   /* hover */
  --mint-soft: #E6FAF0;   /* 淡薄荷底 */
  --forest:    #0A6B46;   /* 文字级绿 */

  --line:      rgba(41, 41, 41, 0.14);
  --line-2:    rgba(41, 41, 41, 0.075);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC",
          "Noto Sans CJK SC", sans-serif;

  --gut: clamp(20px, 5vw, 56px);
  --max: 1180px;
  --pad: clamp(84px, 12vh, 156px);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 15.5px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img, picture { display: block; max-width: 100%; }
button, input { font-family: inherit; }

:focus-visible { outline: 2px solid var(--forest); outline-offset: 3px; }
::selection { background: var(--mint); color: var(--ink); }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gut); }

/* 微标签 */
.label {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 20px;
}

.tiny { font-size: 12px; color: var(--ink-3); letter-spacing: 0.02em; }
.mute { color: var(--ink-2); }

/* ══════════════════════════════════════════════
   顶栏
   ══════════════════════════════════════════════ */
.topbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px var(--gut);
  background: rgba(255, 255, 255, .60);          /* 磨砂玻璃，无渐变 */
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  border-bottom: 1px solid rgba(255, 255, 255, .5);
}

.wordmark {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.005em;
  display: flex;
  align-items: baseline;
  gap: 8px;
  color: var(--ink);
}
.wordmark span {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.topnav { display: flex; align-items: center; gap: 30px; }
.topnav a {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--ink-2);
  transition: color .2s;
}
.topnav a:hover { color: var(--ink); }

.topnav-cta {
  background: var(--mint);
  color: #12271B !important;
  font-weight: 700;
  padding: 9px 20px;
  border-radius: 999px;
  transition: background .2s;
}
.topnav-cta:hover { background: var(--mint-hi); }

.lang {
  background: none;
  border: 1px solid var(--line);
  color: var(--ink-2);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  padding: 5px 9px;
  border-radius: 4px;
  cursor: pointer;
  transition: color .2s, border-color .2s;
}
.lang:hover { color: var(--ink); border-color: var(--ink-3); }
.lang [data-lang="en"] { display: none; }
body[data-lang="en"] .lang [data-lang="zh"] { display: none; }
body[data-lang="en"] .lang [data-lang="en"] { display: inline; }

/* ══════════════════════════════════════════════
   HERO —— 照片 + 白字
   ══════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: clamp(600px, 82svh, 900px);
  display: flex;
  align-items: center;          /* 文字垂直居中 */
  padding-top: 116px;
  padding-bottom: 72px;
  isolation: isolate;
  overflow: hidden;
}

.hero-media { position: absolute; inset: 0; z-index: -1; }

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 52%;
  filter: contrast(1.02);   /* 本身是黑白片，不再降饱和 */
}

/* 左暗右亮 + 底部淡出到白 */
.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    /* 左暗右亮：文字区有底，右侧保留画面 */
    linear-gradient(100deg,
      rgba(8,10,9,.80) 0%,
      rgba(8,10,9,.56) 26%,
      rgba(8,10,9,.22) 58%,
      rgba(8,10,9,.04) 100%),
    /* 上下轻压，底部略重，硬切到白底 */
    linear-gradient(to bottom,
      rgba(8,10,9,.12) 0%,
      rgba(8,10,9,.02) 22%,
      rgba(8,10,9,.10) 58%,
      rgba(8,10,9,.26) 86%,
      rgba(8,10,9,.36) 100%);
}

.hero-inner { width: 100%; position: relative; }
.hero .label { color: rgba(255,255,255,.75); }

.hero-title {
  font-size: clamp(2.4rem, 6.6vw, 4.5rem);
  font-weight: 750;
  line-height: 1.06;
  letter-spacing: -0.028em;
  margin-bottom: 26px;
  color: #FFFFFF;
  text-shadow: 0 1px 24px rgba(6, 12, 9, .28);
}
.hero-title span { display: block; }
.hero-title .dim { color: rgba(255,255,255,.72); }

.hero-lede {
  font-size: clamp(15px, 1.5vw, 17px);
  color: rgba(255,255,255,.86);
  max-width: 34ch;
  margin-bottom: 36px;
  text-shadow: 0 1px 16px rgba(6, 12, 9, .3);
}

.hero-actions { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }

/* ── 按钮：薄荷绿胶囊 ───────────────────────── */
.btn {
  display: inline-block;
  background: var(--mint);
  color: #12271B;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 16px 32px;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  transition: background .2s, transform .15s;
}
.btn:hover { background: var(--mint-hi); transform: translateY(-1px); }

.link {
  font-size: 13.5px;
  font-weight: 600;
  color: #FFFFFF;
  border-bottom: 1.5px solid rgba(255,255,255,.55);
  padding-bottom: 3px;
  transition: border-color .2s;
  text-shadow: 0 1px 16px rgba(6, 12, 9, .35);
}
.link:hover { border-color: var(--mint); }

/* ══════════════════════════════════════════════
   数字带（白底）
   ══════════════════════════════════════════════ */
.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0 20px;
  padding-top: clamp(30px, 4.5vh, 46px);
  padding-bottom: clamp(34px, 5vh, 52px);
  border-bottom: 1px solid var(--line);
}
.metrics .m { display: flex; flex-direction: column; gap: 5px; }
.metrics b {
  font-size: clamp(1.6rem, 2.7vw, 2.25rem);
  font-weight: 750;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.metrics span {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ══════════════════════════════════════════════
   通用区块
   ══════════════════════════════════════════════ */
.sec { padding: var(--pad) 0; }
.sec-alt { background: var(--paper-2); }

.sec-head { max-width: 62ch; margin-bottom: clamp(40px, 6vh, 72px); }

h2 {
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  font-weight: 750;
  line-height: 1.14;
  letter-spacing: -0.028em;
  margin-bottom: 16px;
  color: var(--ink);
}

.sec-lede { font-size: clamp(14.5px, 1.4vw, 16px); color: var(--ink-2); max-width: 52ch; }

/* 引文 */
.pull {
  font-size: clamp(1.05rem, 2vw, 1.4rem);
  line-height: 1.55;
  letter-spacing: -0.012em;
  color: var(--ink);
  max-width: 40ch;
  padding-left: 24px;
  border-left: 3px solid var(--mint);
  margin-bottom: clamp(52px, 7vh, 88px);
}

.sec-foot {
  margin-top: clamp(36px, 5vh, 56px);
  padding-top: 18px;
  border-top: 1px solid var(--line-2);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ══════════════════════════════════════════════
   三条原则
   ══════════════════════════════════════════════ */
.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  margin-bottom: clamp(58px, 9vh, 100px);
}
.principles article { padding: 34px 32px 38px 0; }
.principles article + article { padding-left: 32px; border-left: 1px solid var(--line); }

.principles h3 {
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
  color: var(--ink);
}
.principles p { font-size: 14px; color: var(--ink-2); line-height: 1.7; margin-bottom: 18px; }
.principles .proof {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--forest);
  font-variant-numeric: tabular-nums;
  margin-bottom: 0;
}

/* ══════════════════════════════════════════════
   五个步骤
   ══════════════════════════════════════════════ */
.steps { border-top: 1px solid var(--line); margin-bottom: clamp(58px, 9vh, 100px); }

.step {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr) minmax(0, 0.95fr);
  gap: clamp(20px, 4vw, 56px);
  align-items: start;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
  transition: background .25s;
}
.step:hover { background: rgba(41, 41, 41, .018); }

.step-n {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
  padding-top: 5px;
}

.step-body h3 {
  font-size: 16.5px;
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-bottom: 7px;
  color: var(--ink);
}
.step-body p { font-size: 13.5px; color: var(--ink-2); }

.step-real {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--forest);
  font-variant-numeric: tabular-nums;
  padding-top: 3px;
}

/* ══════════════════════════════════════════════
   四个场景
   ══════════════════════════════════════════════ */
.scenes { width: 100%; border-collapse: collapse; font-size: 13px; }

.scenes thead th {
  text-align: left;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.17em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 0 20px 13px 0;
  border-bottom: 1px solid var(--line);
  vertical-align: bottom;
}

.scenes tbody th {
  text-align: left;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  padding: 20px 20px 20px 0;
  border-bottom: 1px solid var(--line-2);
  white-space: nowrap;
  vertical-align: top;
}

.scenes tbody td {
  color: var(--ink-2);
  padding: 20px 20px 20px 0;
  border-bottom: 1px solid var(--line-2);
  line-height: 1.6;
  vertical-align: top;
}

.scenes tbody tr:last-child th,
.scenes tbody tr:last-child td { border-bottom: 0; }

.scenes tbody td:last-child { padding-right: 0; }

/* ══════════════════════════════════════════════
   找到我
   ══════════════════════════════════════════════ */
.bio { max-width: 58ch; margin-bottom: clamp(44px, 6vh, 72px); }
.bio p {
  font-size: clamp(15px, 1.6vw, 17.5px);
  line-height: 1.7;
  letter-spacing: -0.008em;
  margin-bottom: 14px;
  color: var(--ink);
}
.bio .mute { font-size: 13.5px; line-height: 1.75; margin-bottom: 0; color: var(--ink-2); }

.channels { list-style: none; border-top: 1px solid var(--line); }
.channels li { border-bottom: 1px solid var(--line); }

.channels a,
.channels .ch-static {
  display: grid;
  grid-template-columns: minmax(140px, 0.9fr) minmax(0, 1.4fr) auto;
  gap: clamp(16px, 3vw, 40px);
  align-items: baseline;
  padding: 28px 0;
  transition: padding-left .25s, background .25s;
}

.channels a:hover { background: var(--mint-soft); padding-left: 14px; }

.ch-name {
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  font-weight: 750;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.ch-handle { font-size: 13px; color: var(--ink-2); letter-spacing: 0.02em; }

.ch-meta {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--ink-3);
  white-space: nowrap;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.channels .is-todo .ch-name { color: var(--ink-3); }

/* ══════════════════════════════════════════════
   领取 —— 白胶囊输入 + 薄荷绿按钮
   ══════════════════════════════════════════════ */
.get-wrap .sec-head { max-width: 46ch; }

.get-form {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 560px;
}

.get-form input {
  flex: 1;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  font-size: 15px;
  padding: 15px 24px;
  min-width: 0;
  transition: border-color .2s, box-shadow .2s;
}
.get-form input::placeholder { color: var(--ink-3); }
.get-form input:focus {
  outline: none;
  border-color: var(--forest);
  box-shadow: 0 0 0 3px rgba(10, 107, 70, .1);
}

.get-form .btn { padding: 15px 30px; white-space: nowrap; }

.form-msg {
  font-size: 12.5px;
  min-height: 20px;
  margin-top: 14px;
  letter-spacing: 0.01em;
}
.form-msg.is-ok      { color: var(--forest); }
.form-msg.is-err     { color: #B3261E; }
.form-msg.is-fail    { color: #B3261E; }
.form-msg.is-pending { color: var(--forest); }

#getPrivacy { margin-top: 6px; }

/* ══════════════════════════════════════════════
   页脚
   ══════════════════════════════════════════════ */
.foot { border-top: 1px solid var(--line-2); padding: 30px 0 42px; }

.foot-inner { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }
.foot-name { font-size: 12px; color: var(--ink-2); font-weight: 600; letter-spacing: 0.03em; }
.foot-inner a { transition: color .2s; }
.foot-inner a:hover { color: var(--forest); }

/* ══════════════════════════════════════════════
   响应式
   ══════════════════════════════════════════════ */
@media (max-width: 900px) {
  .principles { grid-template-columns: 1fr; }
  .principles article { padding: 26px 0 30px; border-bottom: 1px solid var(--line-2); }
  .principles article + article { padding-left: 0; border-left: 0; }
  .principles article:last-child { border-bottom: 0; }

  .step { grid-template-columns: 40px minmax(0, 1fr); gap: 16px; padding: 24px 0; }
  .step-real { grid-column: 2; padding-top: 10px; }

  .scenes thead { display: none; }
  .scenes, .scenes tbody, .scenes tr, .scenes th, .scenes td { display: block; }
  .scenes tbody tr { padding: 22px 0; border-bottom: 1px solid var(--line-2); }
  .scenes tbody tr:last-child { border-bottom: 0; }
  .scenes tbody th { padding: 0 0 9px; border: 0; font-size: 15px; white-space: normal; }
  .scenes tbody td { padding: 0 0 7px; border: 0; font-size: 13px; }
  .scenes tbody td::before {
    content: attr(data-label);
    display: block;
    font-size: 9.5px;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--ink-3);
    margin-bottom: 2px;
  }

  .channels a,
  .channels .ch-static { grid-template-columns: 1fr auto; gap: 5px 16px; padding: 20px 0; }
  .ch-name { grid-column: 1; }
  .ch-meta { grid-column: 2; grid-row: 1; }
  .ch-handle { grid-column: 1 / -1; }

  .topnav { gap: 14px; }
  .topnav a { font-size: 12px; }
  .topnav a:not(.topnav-cta) { display: none; }

  .wordmark span { display: none; }
  .topbar {
    padding: 13px var(--gut);
  }

  .hero { min-height: 84svh; padding-top: 104px; padding-bottom: clamp(48px, 8vh, 80px); }
  .metrics { grid-template-columns: repeat(2, 1fr); gap: 22px 16px; }
}

@media (max-width: 420px) {
  .hero-title { font-size: 2rem; }
  .btn { padding: 14px 24px; font-size: 13px; }
  .get-form { flex-direction: column; align-items: stretch; gap: 12px; }
  .get-form .btn { text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}

@media print {
  .topbar, .hero-media, .hero-actions, .get-form, .foot { display: none; }
  body { background: #fff; color: #000; }
}

/* ══════════════════════════════════════════════
   ≤720px：Hero 改为「图片在上 · 文字在白底」
   彻底解决白字压亮照片的对比度问题
   ══════════════════════════════════════════════ */
@media (max-width: 720px) {
  .hero {
    display: block;
    min-height: 0;
    padding: 0;
    overflow: visible;
  }

  .hero-media {
    position: relative !important;
    inset: auto !important;
      z-index: 0 !important;      /* 相对定位下 -1 会沉到页面背景后面 */
    height: 300px;
    overflow: hidden;
  }
  .hero-media picture {
    position: absolute;
    inset: 0;
    display: block;
  }
  .hero-media img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 50% 44%;
  }
  .hero-media::after {
    background: linear-gradient(to bottom,
      rgba(10,16,12,.28) 0%,
      rgba(10,16,12,.04) 52%,
      rgba(255,255,255,.12) 90%,
      #FFFFFF 100%);
  }

  .hero-inner {
    background: var(--paper);
    padding-top: clamp(28px, 4vh, 40px);
    padding-bottom: clamp(20px, 3vh, 28px);
  }

  .hero-title { color: var(--ink); text-shadow: none; }
  .hero-title .dim { color: var(--ink-2); }
  .hero-title { font-size: clamp(1.85rem, 8vw, 2.4rem); }

  .hero-lede { color: var(--ink-2); text-shadow: none; }

  .hero .label { color: var(--ink-3); }

  .link { color: var(--ink); border-bottom-color: var(--ink); text-shadow: none; }
  .link:hover { color: var(--forest); border-bottom-color: var(--forest); }

  .metrics { padding-top: 28px; }
}

/* ══════════════════════════════════════════════
   02 关于 —— 左文右数字
   ══════════════════════════════════════════════ */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: clamp(36px, 6vw, 96px);
  align-items: start;
}

.about-text p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-2);
  margin-bottom: 18px;
  max-width: 60ch;
}
.about-text .lead {
  font-size: clamp(16px, 1.7vw, 19px);
  line-height: 1.7;
  color: var(--ink);
  letter-spacing: -0.012em;
  margin-bottom: 26px;
}
.about-text p:last-child { margin-bottom: 0; }

.about-facts {
  list-style: none;
  border-top: 1px solid var(--line);
}
.about-facts li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-2);
}
.about-facts b {
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  font-weight: 750;
  letter-spacing: -0.03em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  min-width: 3.6em;
  line-height: 1;
}
.about-facts span {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-3);
}

/* ══════════════════════════════════════════════
   03 服务 —— 图标 + 短句
   ══════════════════════════════════════════════ */
.services {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
}

.services li {
  padding: 34px 32px 38px 0;
}
.services li + li {
  padding-left: 32px;
  border-left: 1px solid var(--line);
}

.svc-icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--mint-soft);
  color: var(--forest);
  margin-bottom: 20px;
}
.svc-icon svg { width: 21px; height: 21px; }

.services h3 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.012em;
  margin-bottom: 10px;
  color: var(--ink);
}
.services p {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink-2);
  max-width: 32ch;
}

/* ══════════════════════════════════════════════
   04 案例 —— 横向 scroll-snap 卡片（Cowboy 式）
   ══════════════════════════════════════════════ */
.case-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(330px, 1fr);
  gap: 18px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  padding-bottom: 6px;
  scrollbar-width: none;
}
.case-track::-webkit-scrollbar { display: none; }

.case-card {
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 30px 28px 32px;
  transition: transform .35s cubic-bezier(.22,.61,.36,1),
              border-color .35s ease,
              box-shadow .35s ease;
}
@media (hover: hover) {
  .case-card:hover {
    transform: translateY(-4px);
    border-color: rgba(41,41,41,.22);
    box-shadow: 0 14px 40px -18px rgba(20, 24, 20, .22);
  }
}

.case-head { display: flex; flex-direction: column; gap: 9px; margin-bottom: 24px; }

.case-n {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}

.case-head h3 {
  font-size: clamp(1.15rem, 1.8vw, 1.32rem);
  font-weight: 720;
  letter-spacing: -0.022em;
  line-height: 1.3;
  color: var(--ink);
}

.case-tag {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.case-body {
  display: flex;
  flex-direction: column;
  gap: 17px;
  margin-top: auto;
}
.case-body dt {
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--forest);
  margin-bottom: 5px;
}
.case-body dd {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-2);
}

/* 滚动指示点 */
.case-nav {
  display: flex;
  gap: 7px;
  margin-top: 22px;
}
.case-nav span {
  width: 22px;
  height: 3px;
  border-radius: 2px;
  background: var(--line);
  transition: background .3s, width .3s;
}
.case-nav span.is-on { background: var(--forest); width: 34px; }

/* ══════════════════════════════════════════════
   05 团队
   ══════════════════════════════════════════════ */
.team {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(28px, 5vw, 72px);
  border-top: 1px solid var(--line);
  padding-top: 32px;
}

.team-name {
  font-size: clamp(1.1rem, 1.9vw, 1.3rem);
  font-weight: 720;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 8px;
}
.team-desc {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink-2);
  max-width: 38ch;
}

/* ══════════════════════════════════════════════
   06 联系
   ══════════════════════════════════════════════ */
.contact-mail {
  display: inline-block;
  font-size: clamp(1.25rem, 3.2vw, 2.1rem);
  font-weight: 720;
  letter-spacing: -0.025em;
  color: var(--ink);
  border-bottom: 3px solid var(--mint);
  padding-bottom: 6px;
  margin-bottom: clamp(36px, 5vh, 56px);
  transition: border-color .2s, color .2s;
  word-break: break-all;
}
.contact-mail:hover { border-color: var(--forest); color: var(--forest); }

/* ══════════════════════════════════════════════
   响应式补充
   ══════════════════════════════════════════════ */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 34px; }
  .about-facts b { min-width: 3.2em; }

  .services { grid-template-columns: 1fr; }
  .services li { padding: 28px 0 30px; border-bottom: 1px solid var(--line-2); }
  .services li + li { padding-left: 0; border-left: 0; }
  .services li:last-child { border-bottom: 0; }
  .services p { max-width: none; }

  .case-body {
    grid-template-columns: 1fr;
    gap: 20px 0;
    padding-left: 0;
  }

  .team { grid-template-columns: 1fr; gap: 26px; }
}

@media (max-width: 720px) {
  .case-head {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 12px;
    margin-bottom: 18px;
  }
  .case-tag { grid-column: 2; margin-top: 6px; }
}

/* ══════════════════════════════════════════════
   动效 —— 对齐 cowboy.com
   fadeSlideUp / marquee / 吸顶变化
   ══════════════════════════════════════════════ */

/* 进入视口时的淡入上移 */
/* 只在 JS 可用时隐藏，避免脚本失败导致内容不可见 */
.js [data-reveal] {
  opacity: 0;
  transform: translate3d(0, 18px, 0);
  transition: opacity .62s cubic-bezier(.22, .61, .36, 1),
              transform .62s cubic-bezier(.22, .61, .36, 1);
}
.js [data-reveal].is-in { opacity: 1; transform: none; }

/* 滚动字带 */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 15px 0;
  background: var(--paper);
}

.marquee-track {
  display: flex;
  align-items: center;
  gap: 26px;
  width: max-content;
  animation: marquee 34s linear infinite;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-3);
  white-space: nowrap;
}
.marquee-track i { font-style: normal; color: var(--mint); font-weight: 400; }

@keyframes marquee {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(-50%, 0, 0); }
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translate3d(0, 10%, 0); }
  to   { opacity: 1; transform: none; }
}

/* 顶栏滚动后加实底 */
.topbar.is-scrolled {
  background: rgba(255, 255, 255, .84);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border-bottom: 1px solid var(--line);
}

/* 低动效偏好 */
@media (prefers-reduced-motion: reduce) {
  .js [data-reveal] { opacity: 1 !important; transform: none !important; }
  .marquee-track { animation: none; }
  .case-track { scroll-snap-type: none; }
}

/* 移动端：卡片更窄，露出下一张 */
@media (max-width: 720px) {
  .case-track { grid-auto-columns: minmax(276px, 84%); }
  .case-card { padding: 26px 22px 28px; border-radius: 18px; }
}