/* ==========================================================
   钟嘉楠 · 海外营销作品集 — 白色主题版 v5
   ========================================================== */

:root {
  --bg: #ffffff;
  --bg-soft: #f6f6f3;
  --ink: #111111;
  --ink-soft: #6b6b66;
  --line: #e8e8e2;
  --border: #e8e8e2;
  --accent: #ff5f2e;
  --accent-2: #5bc7f0;
  --radius: 18px;
  --shadow: 0 20px 50px rgba(17, 17, 17, 0.08);
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  --font-display: "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  --serif-cn: "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 120px; overflow-anchor: none; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul { list-style: none; }

::selection { background: #111; color: #fff; }

/* ---------- 顶部滚动进度条 ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; z-index: 1200;
  height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.1s linear;
}

/* ==========================================================
   弹窗
   ========================================================== */
.modal {
  position: fixed; inset: 0; z-index: 1300;
  display: flex; align-items: center; justify-content: center;
  background: rgba(17,17,17,0.35);
  backdrop-filter: blur(6px);
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s ease;
}
.modal.is-open { opacity: 1; pointer-events: auto; }

.modal__box {
  background: #fff;
  border-radius: 22px;
  padding: 36px 44px;
  text-align: center;
  box-shadow: 0 24px 60px rgba(17,17,17,0.18);
  transform: translateY(12px) scale(0.96);
  transition: transform 0.3s ease;
}
.modal.is-open .modal__box { transform: none; }

.modal__spinner {
  width: 44px; height: 44px;
  border: 3px solid #eee;
  border-top-color: var(--ink);
  border-radius: 50%;
  margin: 0 auto 16px;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.modal__icon {
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  background: #111; color: #fff;
  border-radius: 50%; font-size: 26px;
  margin: 0 auto 14px;
}
.modal__text { font-size: 17px; font-weight: 600; }
.modal__sub { font-size: 13px; color: var(--ink-soft); margin-top: 4px; }

.copy-toast {
  position: fixed; bottom: 32px; left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--ink); color: #fff;
  padding: 12px 24px; border-radius: 999px;
  font-size: 13px; font-weight: 500;
  box-shadow: 0 12px 30px rgba(17,17,17,0.2);
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 1250;
}
.copy-toast.is-show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ==========================================================
   导航栏：顶部居中 pill
   ========================================================== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1100;
  display: flex; justify-content: center; align-items: center;
  padding: 18px 24px;
  transition: padding 0.35s ease;
}
.nav.is-scrolled { padding: 12px 24px; }

.nav__pill {
  display: flex; align-items: center; gap: 2px;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px;
  box-shadow: 0 6px 24px rgba(17, 17, 17, 0.06);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}
.nav.is-scrolled .nav__pill { box-shadow: 0 10px 34px rgba(17, 17, 17, 0.1); }

.nav__link {
  position: relative;
  padding: 9px 13px;
  font-size: 13px; font-weight: 500;
  color: var(--ink-soft);
  border-radius: 999px;
  white-space: nowrap;
  transition: color 0.25s ease, background 0.25s ease;
}
.nav__link:hover { color: var(--ink); background: #f1f1ec; }
.nav__link.is-active { color: #fff; background: var(--ink); }

/* 汉堡按钮（移动端） */
.nav__burger {
  display: none;
  position: fixed; top: 18px; right: 18px; z-index: 1150;
  width: 44px; height: 44px;
  background: rgba(255,255,255,0.9);
  border: 1px solid var(--line);
  border-radius: 12px;
  flex-direction: column; justify-content: center; align-items: center; gap: 5px;
}
.nav__burger span {
  display: block; width: 18px; height: 2px;
  background: var(--ink); border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav__burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.is-open span:nth-child(2) { opacity: 0; }
.nav__burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================
   Hero 首页（参考图1 布局）
   ========================================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 130px 24px 90px;
  overflow: hidden;
  background: var(--bg);
}

/* ---------- 悬浮 3D 物体（更靠拢照片） ---------- */
.floaters { position: absolute; inset: 0; pointer-events: none; z-index: 5; }

.floater {
  position: absolute;
  filter: drop-shadow(0 18px 30px rgba(17,17,17,0.13));
  will-change: transform;
}
.floater--pyramid  { top: 10%;  left: 24%;  width: 68px; height: 68px; animation: floaty 7s ease-in-out infinite; }
.floater--star     { top: 10%;  right: 26%; width: 58px; height: 58px; animation: floaty 8s ease-in-out 0.6s infinite; }
.floater--sphere   { top: 38%; left: 20%;  width: 96px; height: 96px; animation: floaty 9s ease-in-out 0.3s infinite; }
.floater--poly     { top: 40%; right: 22%; width: 72px; height: 72px; animation: floaty 8.5s ease-in-out 1s infinite; }
.floater--cylinder { bottom: 23%; left: 12%; width: 54px; height: 72px; animation: floaty 7.5s ease-in-out 1.4s infinite; }
.floater--cube     { bottom: 24%; right: 12%; width: 66px; height: 66px; animation: floaty 7s ease-in-out 0.9s infinite; }

@keyframes floaty {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50%      { transform: translateY(-14px) rotate(4deg); }
}

/* ---------- 大标题与轮换副标题 ---------- */
.hero__top {
  position: relative; z-index: 7;
  text-align: center; margin-bottom: 18px;
}

.hero__title {
  font-size: clamp(26px, 3.8vw, 44px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  white-space: nowrap;
}

.hero__roles {
  margin-top: 8px;
  font-size: clamp(15px, 1.9vw, 19px);
  color: var(--ink-soft);
  min-height: 28px;
}
.hero__roles .role-word {
  display: inline-block;
  opacity: 0; transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.hero__roles .role-word.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- 人像 ---------- */
.portrait {
  position: relative; z-index: 6;
  display: flex; flex-direction: column; align-items: center;
  margin: 10px 0 22px;
}
.portrait__photo {
  width: min(260px, 58vw);
  aspect-ratio: 1 / 1;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: var(--shadow);
  background: linear-gradient(135deg, #d6e4ff 0%, #a8c6ff 100%);
  transform: rotate(-4.5deg);
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  position: relative;
  z-index: 3;
}
.portrait__photo img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- 全宽横向大字跑马灯 ---------- */
.marquee {
  position: absolute;
  left: 0; right: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 4;
  overflow: hidden;
  white-space: nowrap;
  pointer-events: none;
}
.marquee__track {
  display: inline-flex; width: max-content;
  animation: marquee 110s linear infinite;
}
.marquee__item {
  font-size: clamp(72px, 12vw, 180px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  text-transform: uppercase;
  color: var(--ink);
  padding-right: 0.35em;
}
.marquee__item i { font-style: normal; color: var(--accent); padding: 0 0.24em; font-size: 0.7em; vertical-align: 0.06em; }

@keyframes marquee { to { transform: translateX(-50%); } }

/* 人像下方：2 years+ */
.hero__caption {
  position: relative; z-index: 7;
  display: flex; align-items: baseline; gap: 8px;
  font-size: 17px; color: var(--ink-soft);
  margin-bottom: 22px;
}
.hero__caption b {
  font-size: 28px; font-weight: 700; color: var(--ink);
  letter-spacing: -0.02em;
}
.hero__intro {
  position: relative;
  z-index: 7;
  width: min(500px, calc(100vw - 48px));
  margin: -4px auto 24px;
  text-align: left;
  color: var(--ink-soft);
}
.hero__intro p {
  font-size: 15px;
  line-height: 1.85;
}
.hero__intro p + p { margin-top: 4px; }
.hero__intro strong {
  color: var(--ink);
  font-weight: 700;
}

/* ---------- 双 CTA ---------- */
.hero__cta {
  position: relative; z-index: 7;
  display: flex; gap: 14px; flex-wrap: wrap; justify-content: center;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 15px 34px;
  border-radius: 999px;
  font-size: 16px; font-weight: 600;
  border: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, color 0.3s ease;
}
.btn--primary { background: var(--ink); color: #fff; box-shadow: 0 12px 28px rgba(17,17,17,0.22); }
.btn--primary:hover { transform: translateY(-3px); box-shadow: 0 18px 36px rgba(17,17,17,0.28); }
.btn--ghost { border: 1.5px solid var(--ink); color: var(--ink); background: transparent; }
.btn--ghost:hover { transform: translateY(-3px); background: var(--ink); color: #fff; }

/* ==========================================================
   通用版块
   ========================================================== */
.section { padding: 120px 24px 40px; position: relative; }
.section--alt { background: var(--bg-soft); }
.section--showcase, .section--detail { overflow: hidden; }

.section__head { text-align: center; margin-bottom: 60px; }
.section__index {
  display: inline-block;
  font-size: 13px; font-weight: 700; letter-spacing: 3px;
  color: #fff; background: var(--ink);
  border-radius: 999px; padding: 6px 16px;
  margin-bottom: 16px;
}
.section__title { font-size: clamp(34px, 5vw, 58px); font-weight: 700; letter-spacing: -0.03em; line-height: 1.05; }
.section__kicker { margin-top: 10px; font-size: 15px; letter-spacing: 2.5px; color: var(--ink-soft); text-transform: uppercase; }

/* 滚动渐显 */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* ==========================================================
   正职经历：Z 形时间轴
   ========================================================== */
.work-list { max-width: 1080px; margin: 0 auto; display: flex; flex-direction: column; gap: 120px; }

.work-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.work-item--reverse .work-card { order: 2; }
.work-item--reverse .work-showcase { order: 1; }

.work-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 38px 36px;
  box-shadow: 0 10px 30px rgba(17,17,17,0.05);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.work-card:hover { transform: translateY(-6px); box-shadow: 0 24px 50px rgba(17,17,17,0.1); }

.work-card__meta { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.work-card__date {
  font-size: 13px; font-weight: 700; letter-spacing: 1px;
  color: var(--ink); background: var(--bg-soft);
  border: 1px solid var(--line);
  padding: 5px 12px; border-radius: 999px;
}
.work-card__tag {
  font-size: 12px; letter-spacing: 1.5px; color: var(--ink-soft);
  text-transform: uppercase;
}
.work-card__company { font-size: clamp(22px, 2.6vw, 28px); font-weight: 700; letter-spacing: -0.02em; line-height: 1.25; margin-bottom: 12px; }
.work-card__desc { color: var(--ink-soft); font-size: 15px; margin-bottom: 18px; }

.work-card__points { display: flex; flex-direction: column; gap: 10px; }
.work-card__points li {
  position: relative; padding-left: 18px;
  font-size: 14.5px; color: #3a3a36;
}
.work-card__points li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
}
.work-card__points b { color: var(--ink); }

.work-card__link {
  display: inline-block;
  margin-top: 20px;
  font-size: 14px; font-weight: 600;
  color: var(--ink);
  border-bottom: 1.5px solid var(--ink);
  padding-bottom: 2px;
  transition: color 0.25s ease, border-color 0.25s ease;
}
.work-card__link:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- Hohem 封面 collage ---------- */
.work-showcase {
  position: relative;
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 360px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
}

.hohem-collage {
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #f7f7f5, #ecece8);
  cursor: pointer;
}

.hohem-collage__images {
  position: relative;
  width: 220px; height: 220px;
}
.hohem-collage__images img {
  position: absolute;
  width: 150px; height: 150px;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: 0 12px 30px rgba(17,17,17,0.18);
  transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.55s ease;
}
.hohem-collage__images img:nth-child(1) { top: 0; left: 0; transform: rotate(-8deg); z-index: 1; }
.hohem-collage__images img:nth-child(2) { top: 20px; left: 35px; transform: rotate(3deg); z-index: 2; }
.hohem-collage__images img:nth-child(3) { top: 45px; left: 70px; transform: rotate(10deg); z-index: 3; }

.hohem-collage:hover .hohem-collage__images img:nth-child(1) { transform: rotate(-14deg) translate(-28px, -18px); }
.hohem-collage:hover .hohem-collage__images img:nth-child(2) { transform: rotate(0deg) translate(0, -32px) scale(1.05); }
.hohem-collage:hover .hohem-collage__images img:nth-child(3) { transform: rotate(14deg) translate(28px, -12px); }

.hohem-collage__corner {
  position: absolute;
  top: 18px; right: 18px;
  display: flex; flex-direction: column; gap: 6px;
  text-align: right;
  z-index: 5;
}
.hohem-collage__corner span {
  font-size: 12px; font-weight: 700;
  color: var(--ink);
  background: rgba(255,255,255,0.9);
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
}

.hohem-collage__overlay {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center;
  background: rgba(255,255,255,0.78);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 0.45s ease;
  z-index: 4;
  padding: 24px;
}
.hohem-collage:hover .hohem-collage__overlay { opacity: 1; }

.hohem-collage__overlay h3 {
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}
.hohem-collage__overlay p {
  font-size: 15px; color: var(--ink-soft);
  margin-bottom: 10px;
}
.hohem-collage__overlay small {
  display: inline-block;
  font-size: 12px; letter-spacing: 1.5px;
  color: var(--ink);
  background: rgba(17,17,17,0.06);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.case-link {
  font-size: 14px; font-weight: 600;
  color: var(--ink);
  border-bottom: 1.5px solid var(--ink);
  padding-bottom: 2px;
}

.work-showcase__placeholder {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
  color: var(--ink);
}
.work-showcase__placeholder span { font-size: 22px; font-weight: 700; margin-bottom: 6px; }
.work-showcase__placeholder small { font-size: 13px; opacity: 0.8; }

/* ---------- Hollyland 封面 collage ---------- */
.hollyland-collage {
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #f0f4f8, #e2e8f0);
  cursor: pointer;
}
.hollyland-collage__images {
  position: relative;
  width: 220px; height: 220px;
}
.hollyland-collage__images img {
  position: absolute;
  width: 150px; height: 150px;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: 0 12px 30px rgba(17,17,17,0.18);
  transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.55s ease;
}
.hollyland-collage__images img:nth-child(1) { top: 0; left: 0; transform: rotate(-8deg); z-index: 1; }
.hollyland-collage__images img:nth-child(2) { top: 20px; left: 35px; transform: rotate(3deg); z-index: 2; }
.hollyland-collage__images img:nth-child(3) { top: 45px; left: 70px; transform: rotate(10deg); z-index: 3; }

.hollyland-collage:hover .hollyland-collage__images img:nth-child(1) { transform: rotate(-14deg) translate(-28px, -18px); }
.hollyland-collage:hover .hollyland-collage__images img:nth-child(2) { transform: rotate(0deg) translate(0, -32px) scale(1.05); }
.hollyland-collage:hover .hollyland-collage__images img:nth-child(3) { transform: rotate(14deg) translate(28px, -12px); }

.hollyland-collage__corner {
  position: absolute;
  top: 18px; right: 18px;
  display: flex; flex-direction: column; gap: 6px;
  text-align: right;
  z-index: 5;
}
.hollyland-collage__corner span {
  font-size: 12px; font-weight: 700;
  color: var(--ink);
  background: rgba(255,255,255,0.9);
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
}

.hollyland-collage__overlay {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center;
  background: rgba(255,255,255,0.82);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 0.45s ease;
  z-index: 4;
  padding: 24px;
}
.hollyland-collage:hover .hollyland-collage__overlay { opacity: 1; }

.hollyland-collage__overlay h3 {
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}
.hollyland-collage__overlay p {
  font-size: 15px; color: var(--ink-soft);
  margin-bottom: 10px;
}
.hollyland-collage__overlay small {
  display: inline-block;
  font-size: 12px; letter-spacing: 1.5px;
  color: var(--ink);
  background: rgba(17,17,17,0.06);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}

/* ==========================================================
   Showcase：iOS Wheel Picker
   ========================================================== */

.detail__float {
  position: fixed; right: 24px; bottom: 28px; z-index: 1000;
  display: inline-flex; align-items: center;
  background: var(--ink); color: #fff;
  padding: 13px 22px; border-radius: 999px;
  font-size: 13px; font-weight: 600;
  box-shadow: 0 12px 30px rgba(17,17,17,0.22);
  opacity: 0; transform: translateY(20px); pointer-events: none;
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.detail__float.is-show,
.detail__float--show { opacity: 1; transform: none; pointer-events: auto; }
.detail__float:hover { background: #333; }

/* ==========================================================
   Hohem 项目详情页（全屏二级页）
   ========================================================== */
.case-study {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: var(--bg);
  overflow-y: auto;
  padding-top: 90px;
  opacity: 0;
  transform: translateY(24px) scale(0.985);
  transition: opacity 0.45s ease, transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}
.case-study.is-open {
  display: block;
  opacity: 1;
  transform: none;
}

.case-hero {
  max-width: 920px; margin: 0 auto 90px;
  text-align: center;
  padding: 0 24px;
}
.case-hero__tags {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 10px;
  margin-bottom: 24px;
}
.case-hero__tags span {
  font-size: 12px; font-weight: 600; letter-spacing: 1px;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  padding: 6px 14px; border-radius: 999px;
}
.case-hero__title {
  font-size: clamp(32px, 4.6vw, 54px);
  font-weight: 700; letter-spacing: -0.03em;
  line-height: 1.08;
  margin-bottom: 18px;
  white-space: nowrap;
}
.case-hero__lead {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--ink-soft);
  max-width: 780px; margin: 0 auto;
  white-space: nowrap;
}

/* 通用 case section */
.case-section {
  position: relative;
  max-width: 900px; margin: 0 auto 100px;
  padding: 0 24px;
  z-index: 2;
  background: var(--bg);
}
.case-section__head {
  display: flex; align-items: center; gap: 14px;
  margin-bottom: 18px;
}
.case-section__num {
  font-size: 13px; font-weight: 700;
  color: #fff; background: var(--ink);
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
}
.case-section__title {
  font-size: 15px; letter-spacing: 2px;
  color: var(--ink-soft); text-transform: uppercase;
}
.case-section__big {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700; letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 14px;
}
.case-section__big--nowrap { white-space: nowrap; }
.case-section__big--center { text-align: center; }
.case-section__text {
  font-size: 16px; color: var(--ink-soft);
  max-width: 680px;
  margin-bottom: 36px;
}
.case-section__text--nowrap { white-space: nowrap; }
.case-section__text--center { margin-left: auto; margin-right: auto; text-align: center; }
.case-quote {
  border-left: 3px solid var(--ink);
  padding-left: 18px;
  font-size: 17px; font-weight: 500;
  color: var(--ink);
  margin-bottom: 36px;
}

/* 01 发现问题：帖子叠放 */
#case-problem { padding-bottom: 160px; margin-bottom: 0; z-index: 1; }
.post-stack {
  position: relative;
  width: 360px; height: 300px;
  margin: 0 auto;
}
.post-card {
  position: absolute;
  width: 210px; border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 14px 34px rgba(17,17,17,0.15);
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  background: #fff;
}
.post-card img { width: 100%; height: auto; display: block; }
.post-card:nth-child(1) { top: 0; left: 0; transform: rotate(-10deg); }
.post-card:nth-child(2) { top: 20px; left: 75px; transform: rotate(3deg); z-index: 2; }
.post-card:nth-child(3) { top: 50px; left: 150px; transform: rotate(12deg); z-index: 3; }

.post-stack:hover .post-card:nth-child(1) { transform: rotate(-14deg) translate(-30px, -10px); }
.post-stack:hover .post-card:nth-child(2) { transform: rotate(0deg) translate(0, -20px) scale(1.03); }
.post-stack:hover .post-card:nth-child(3) { transform: rotate(14deg) translate(30px, -5px); }

.post-card::after {
  content: attr(data-label);
  position: absolute; bottom: 0; left: 0; right: 0;
  background: rgba(17,17,17,0.8); color: #fff;
  font-size: 12px; font-weight: 600;
  text-align: center;
  padding: 8px 0;
  opacity: 0; transform: translateY(8px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.post-stack:hover .post-card::after { opacity: 1; transform: none; }

/* 02 解决方案模块 */
.solution-modules {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.solution-module {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.solution-module:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.solution-module__img {
  display: flex; gap: 10px;
  margin-bottom: 16px;
}
.solution-module__img img {
  flex: 1 1 calc(50% - 5px);
  border-radius: 12px;
  object-fit: cover;
  height: 140px;
}
.solution-module__img--single img {
  flex: none;
  width: 100%;
}
.solution-module h4 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.solution-module p { font-size: 14px; color: var(--ink-soft); }

/* 03 大数字 */
.big-numbers {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 36px;
}
.big-number {
  position: relative;
  background: var(--ink); color: #fff;
  border-radius: var(--radius);
  padding: 28px 16px;
  text-align: center;
  cursor: help;
}
.big-number b {
  display: block;
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700; letter-spacing: -0.02em;
}
.big-number span { font-size: 13px; opacity: 0.8; }
.big-number::after {
  content: attr(data-tip);
  position: absolute; bottom: 110%; left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: #333; color: #fff;
  font-size: 12px; font-weight: 500;
  padding: 8px 12px; border-radius: 8px;
  white-space: nowrap;
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.big-number:hover::after { opacity: 1; transform: translateX(-50%) translateY(0); }

.experiment-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  align-items: start;
}
.experiment-gallery img {
  width: 100%;
  height: 170px;
  object-fit: cover;
  border-radius: 14px;
  box-shadow: 0 8px 22px rgba(17,17,17,0.08);
}

/* 04 洞察卡片 */
.insight-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.insight-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.insight-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.insight-card__img {
  display: flex; gap: 8px;
  height: 180px;
  overflow: hidden;
  background: var(--bg-soft);
}
.insight-card__img img {
  flex: 1 1 50%;
  width: 50%;
  height: 100%;
  object-fit: cover;
}
.insight-card__img--single img {
  flex: none;
  width: 100%;
}
.insight-card h4 { font-size: 16px; font-weight: 700; padding: 16px 18px 4px; }
.insight-card__data { font-size: 13px; color: var(--ink-soft); padding: 0 18px 8px; }
.insight-card__why {
  font-size: 14px; color: var(--ink);
  padding: 0 18px 18px;
  opacity: 0.85;
}

/* 05 激活路径 */
.path-flow { margin-bottom: 36px; }
.path-node {
  display: flex; align-items: center; justify-content: center;
  flex-wrap: wrap; gap: 10px;
  padding: 22px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 15px; font-weight: 600;
}
.path-node.is-old { background: #ffeaea; color: #c23b1f; }
.path-node.is-new { background: #e8f5e9; color: #2f7d31; }
.path-arrow { font-size: 18px; opacity: 0.6; }
.path-cross { margin-left: 8px; }
.path-check { margin-left: 8px; }

.path-loop {
  display: flex; align-items: center; justify-content: center;
  flex-wrap: wrap; gap: 10px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}
.loop-node {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 18px;
  font-size: 13px; font-weight: 600;
}

/* 06 角色网格 */
.role-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.role-card {
  position: relative;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 16px;
  text-align: center;
  cursor: help;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.role-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.role-card__icon { font-size: 32px; margin-bottom: 10px; }
.role-card h4 { font-size: 16px; font-weight: 700; }
.role-card::after {
  content: attr(data-role);
  position: absolute; bottom: 108%; left: 50%;
  transform: translateX(-50%) translateY(6px);
  background: #333; color: #fff;
  font-size: 12px; font-weight: 500;
  padding: 8px 12px; border-radius: 8px;
  white-space: nowrap;
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.role-card:hover::after { opacity: 1; transform: translateX(-50%) translateY(0); }

/* 07 结论 */
.case-final {
  font-size: clamp(28px, 4.5vw, 48px);
  font-weight: 700; letter-spacing: -0.03em;
  text-align: center;
  margin-bottom: 18px;
}
.learnings {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  max-width: 760px; margin: 48px auto 0;
}
.learning-card {
  background: var(--ink); color: #fff;
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}
.learning-card b { display: block; font-size: 28px; margin-bottom: 8px; }
.learning-card p { font-size: 14px; opacity: 0.9; }

/* ==========================================================
   教育经历
   ========================================================== */
#education { background: var(--bg); }
.edu-story {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  gap: 86px;
}
.edu-story__item {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.85fr);
  align-items: center;
  gap: 58px;
}
.edu-story__item--reverse {
  grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.05fr);
}
.edu-story__item--reverse .edu-story__copy { order: 2; }
.edu-story__item--reverse .edu-story__media { order: 1; }
.edu-story__eyebrow {
  display: block;
  margin-bottom: 18px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--ink-soft);
}
.edu-story__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 26px;
}
.edu-story__meta img {
  width: 56px;
  height: 56px;
  object-fit: contain;
}
.edu-story__meta h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}
.edu-story__meta p {
  font-size: 13px;
  color: var(--ink-soft);
  font-weight: 600;
}
.edu-story__copy h4 {
  font-size: clamp(26px, 3.2vw, 40px);
  line-height: 1.16;
  letter-spacing: -0.03em;
  margin-bottom: 22px;
}
.edu-story__copy > p {
  max-width: 580px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-soft);
}
.edu-story__copy > p + p { margin-top: 10px; }
.edu-story__copy strong {
  color: var(--ink);
  font-weight: 700;
}
.edu-story__media {
  position: relative;
  margin: 0;
}
.edu-story__media::before {
  content: "";
  position: absolute;
  inset: 18px -16px -18px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  z-index: 0;
}
.edu-story__media img {
  position: relative;
  z-index: 1;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: 0 18px 44px rgba(17,17,17,0.12);
}
.edu-story__media--portrait {
  max-width: 360px;
  justify-self: center;
}
.edu-story__media--portrait img {
  aspect-ratio: 3 / 4;
}

/* ==========================================================
   联系我
   ========================================================== */
.section--contact {
  background: var(--bg);
}
.contact-panel {
  position: relative;
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(44px, 7vw, 82px);
  border-radius: 28px;
  overflow: hidden;
  color: #f7f5ef;
  background:
    radial-gradient(circle at 82% 18%, rgba(134, 194, 159, 0.36), transparent 30%),
    radial-gradient(circle at 12% 90%, rgba(116, 136, 151, 0.24), transparent 32%),
    #1d3029;
  box-shadow: 0 24px 60px rgba(17,17,17,0.18);
}
.contact-panel__index {
  display: block;
  margin-bottom: 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  color: rgba(247,245,239,0.58);
}
.contact-panel h2 {
  max-width: 680px;
  font-size: clamp(34px, 5.2vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin-bottom: 28px;
}
.contact-panel > p {
  max-width: 640px;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(247,245,239,0.72);
}
.contact-row {
  max-width: 760px;
  margin: 34px 0 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.contact-card {
  position: relative;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 8px;
  padding: 22px 18px;
  text-align: left;
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}
.contact-card:hover { transform: translateY(-4px); background: rgba(255,255,255,0.13); border-color: rgba(255,255,255,0.32); }
.contact-card__icon {
  width: 42px; height: 42px;
  margin: 0 0 14px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.14);
  border-radius: 50%;
}
.contact-card__icon img { width: 22px; height: 22px; object-fit: contain; filter: brightness(0) invert(1); opacity: 0.92; }
.contact-card__icon img[src*="icon-wechat"] {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  filter: none;
  opacity: 1;
}
.contact-card__icon--emoji { font-size: 22px; }
.contact-card h4 { font-size: 14px; color: rgba(247,245,239,0.68); margin-bottom: 6px; }
.contact-card__value {
  font-size: 15px; font-weight: 700; color: #fff;
  margin-bottom: 6px;
  user-select: all;
  overflow-wrap: anywhere;
}
.contact-card__hint { font-size: 12px; color: rgba(247,245,239,0.58); }

/* ==========================================================
   Footer
   ========================================================== */
.footer {
  padding: 40px 24px;
  text-align: center;
  font-size: 13px; color: var(--ink-soft);
  border-top: 1px solid var(--line);
}

/* ==========================================================
   Hollyland 项目详情页
   ========================================================== */
.case-hero__lead--nowrap { white-space: nowrap; }

/* 01 Challenge */
.challenge-visual {
  max-width: 760px; margin: 0 auto;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 14px 40px rgba(17,17,17,0.1);
}
.challenge-visual img { width: 100%; height: auto; display: block; }

/* 02 Creator Strategy：5 卡一行横滑（手动右箭头） */
.creator-rail {
  position: relative;
  margin-top: 34px;
}
.creator-rail__track {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  padding: 6px 4px 22px;
  scroll-snap-type: x mandatory;
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.creator-rail__track::-webkit-scrollbar { display: none; }
.creator-text-card {
  flex: 0 0 286px;
  min-width: 286px;
  scroll-snap-align: start;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 22px;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.creator-text-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.creator-text-card__label {
  display: inline-block;
  font-size: 12px; font-weight: 700; letter-spacing: 1px;
  color: #fff; background: var(--ink);
  padding: 4px 12px; border-radius: 999px;
  margin-bottom: 12px;
}
.creator-text-card h4 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.creator-text-card p {
  font-size: 13.5px; color: var(--ink-soft);
  line-height: 1.6; margin-bottom: 6px;
}
.creator-text-card p b { color: var(--ink); }
.creator-rail__nav {
  position: absolute;
  top: 130px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 28px; font-weight: 300; line-height: 1;
  color: var(--ink);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  z-index: 3;
  box-shadow: 0 6px 18px rgba(17, 17, 17, 0.14);
  transition: background 0.25s ease, color 0.25s ease;
}
.creator-rail__nav:hover { background: var(--ink); color: #fff; }
.creator-rail__nav--prev { left: -10px; }
.creator-rail__nav--next { right: -10px; }
@media (max-width: 720px) {
  .creator-rail__nav--prev { left: 4px; }
  .creator-rail__nav--next { right: 4px; }
}

/* 03 Creator Content：横向跑马灯 */
.results-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 18px;
}
.result-number {
  background: var(--ink); color: #fff;
  border-radius: var(--radius);
  padding: 36px 20px;
  text-align: center;
}
.result-number b {
  display: block;
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700; letter-spacing: -0.02em;
  margin-bottom: 6px;
}
.result-number span { font-size: 14px; opacity: 0.85; }
.results-market {
  text-align: center;
  font-size: 15px; letter-spacing: 2px;
  color: var(--ink-soft);
}

/* ==========================================================
   World Cup 整合营销 Case 专属样式
   ========================================================== */

.case-hero__intro {
  max-width: 780px;
  margin: 18px auto 0;
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ---------- Strategy Chain ---------- */
.strategy-chain {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  max-width: 720px;
  margin: 42px auto 0;
}
.strategy-node {
  width: 100%;
  padding: 22px 26px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(255,255,255,0.65);
  text-align: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.strategy-node:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(0,0,0,0.06);
}
.strategy-node b {
  display: block;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 6px;
}
.strategy-node span {
  font-size: 15px;
  color: var(--ink-soft);
}
.strategy-arrow {
  font-size: 22px;
  color: var(--accent);
  font-weight: 700;
}

/* ---------- Content System Tracks ---------- */
.content-tracks {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  max-width: 960px;
  margin: 42px auto 0;
}
.track-card {
  padding: 32px;
  border-radius: 22px;
  border: 1px solid var(--border);
}
.track-card--product { background: linear-gradient(135deg, #f3faff 0%, #fff 100%); }
.track-card--culture { background: linear-gradient(135deg, #fff8f3 0%, #fff 100%); }
.track-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.track-card h4 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
}
.track-card__tag {
  font-size: 13px;
  color: var(--ink-soft);
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 20px;
}
.track-card__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
}
.track-card__list li {
  font-size: 14px;
  padding: 8px 14px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 30px;
}
.track-card__logic {
  font-size: 15px;
  color: var(--ink-soft);
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin: 0;
}

/* ---------- Creator Types ---------- */
.creator-types {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  max-width: 1000px;
  margin: 42px auto 0;
}
.creator-type-card {
  padding: 26px 20px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: #fff;
  text-align: center;
  transition: transform 0.25s ease;
}
.creator-type-card:hover { transform: translateY(-5px); }
.creator-type-card b {
  display: block;
  font-family: var(--font-display);
  font-size: 16px;
  margin-bottom: 8px;
}
.creator-type-card span {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.45;
}

/* ---------- Prime Day Flow ---------- */
.pd-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  margin: 36px 0 18px;
  flex-wrap: wrap;
}
.pd-flow__step {
  padding: 16px 24px;
  border: 1px solid var(--border);
  border-radius: 40px;
  background: #fff;
  font-family: var(--font-display);
  font-size: 15px;
}
.pd-flow__arrow {
  font-size: 20px;
  color: var(--accent);
}

/* ---------- Campaign Journey ---------- */
.case-section--journey { overflow: visible; }
.journey-wrap {
  position: relative;
  max-width: 820px;
  margin: 50px auto 0;
  min-height: 1500px;
}
.journey-path {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}
.journey-path path {
  stroke: var(--ink);
  stroke-width: 1.5;
  stroke-linecap: round;
  fill: none;
  stroke-dasharray: 1;
  stroke-dashoffset: calc(1 - var(--progress, 0));
  transition: stroke-dashoffset 0.1s linear;
}
.journey-nodes {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 90px;
  padding-top: 30px;
}
.journey-node {
  position: relative;
  width: 46%;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: rgba(255,255,255,0.92);
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.journey-node:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 34px rgba(0,0,0,0.08);
  border-color: #d0d0d0;
}
.journey-node--left { align-self: flex-start; margin-left: 2%; }
.journey-node--right { align-self: flex-end; margin-right: 2%; }

.journey-node__date {
  display: block;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--ink-soft);
  margin-bottom: 6px;
}
.journey-node__tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 20px;
  background: var(--ink);
  color: #fff;
  margin-bottom: 12px;
}
.journey-node__title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 6px;
}
.journey-node__desc {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0 0 12px;
}
.journey-node__link {
  display: inline-block;
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 10px;
}
.journey-node__link:hover { text-decoration: underline; }
.journey-node__thumb {
  position: absolute;
  top: 50%;
  width: 180px;
  height: 180px;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: 0 14px 30px rgba(0,0,0,0.12);
  opacity: 0;
  transform: translateY(-50%) scale(0.92);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
  z-index: 2;
}
.journey-node--left .journey-node__thumb { left: calc(100% + 24px); }
.journey-node--right .journey-node__thumb { right: calc(100% + 24px); }
.journey-node.is-active .journey-node__thumb,
.journey-node:hover .journey-node__thumb {
  opacity: 1;
  transform: translateY(-50%) scale(1);
}
.journey-node__hint {
  position: absolute;
  top: -28px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 12px;
  padding: 5px 12px;
  border-radius: 20px;
  background: var(--ink);
  color: #fff;
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
  white-space: nowrap;
}
.journey-node:hover .journey-node__hint,
.journey-node.is-active .journey-node__hint { opacity: 0.9; }

/* ---------- 响应式补充（World Cup Case）---------- */
@media (max-width: 980px) {
  .content-tracks { grid-template-columns: 1fr; }
  .creator-types { grid-template-columns: repeat(2, 1fr); }
  .journey-node { width: 52%; }
}

@media (max-width: 760px) {
  .case-hero__intro { font-size: 15px; }
  .strategy-node b { font-size: 19px; }
  .track-card__head { flex-direction: column; align-items: flex-start; gap: 8px; }
  .creator-types { grid-template-columns: 1fr; }
  .pd-flow { flex-direction: column; gap: 14px; }
  .journey-wrap { min-height: auto; padding-bottom: 30px; }
  .journey-path { display: none; }
  .journey-nodes { gap: 44px; padding-top: 10px; }
  .journey-node { width: 92%; margin: 0 auto; align-self: center; }
  .journey-node--left,
  .journey-node--right { margin-left: auto; margin-right: auto; }
  .journey-node__thumb {
    position: static;
    width: 100%;
    height: auto;
    max-height: 220px;
    opacity: 0;
    transform: none;
    pointer-events: auto;
    margin-top: 14px;
    display: block;
  }
  .journey-node.is-active .journey-node__thumb { opacity: 1; }
  .journey-node:hover .journey-node__thumb { opacity: 0; }
  .journey-node__hint { display: none; }
}

/* ==========================================================
   响应式
   ========================================================== */
@media (max-width: 980px) {
  .work-item,
  .work-item--reverse { grid-template-columns: 1fr; }
  .work-item--reverse .work-card,
  .work-item--reverse .work-showcase { order: unset; }

  .edu-grid { grid-template-columns: 1fr; }
  .edu-story__item,
  .edu-story__item--reverse {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .edu-story__item--reverse .edu-story__copy,
  .edu-story__item--reverse .edu-story__media { order: unset; }
  .edu-story__media--portrait {
    max-width: none;
    justify-self: stretch;
  }
  .contact-row { grid-template-columns: 1fr; }

  .case-hero__title,
  .case-hero__lead,
  .case-hero__lead--nowrap,
  .case-section__big--nowrap,
  .case-section__text--nowrap { white-space: normal; }

  .case-study { padding-top: 70px; }
}

@media (max-width: 760px) {
  .nav__pill {
    position: fixed; top: 72px; right: 18px;
    flex-direction: column; align-items: stretch;
    padding: 10px;
    border-radius: 18px;
    opacity: 0; transform: translateY(-12px); pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
  }
  .nav__pill.is-open { opacity: 1; transform: none; pointer-events: auto; }
  .nav__burger { display: flex; }

  .floater--pyramid  { top: 8%; left: 8%; width: 52px; height: 52px; }
  .floater--star     { top: 8%; right: 10%; width: 46px; height: 46px; }
  .floater--sphere   { top: 42%; left: 4%; width: 72px; height: 72px; }
  .floater--poly     { top: 44%; right: 6%; width: 54px; height: 54px; }
  .floater--cylinder { bottom: 24%; left: -2%; width: 40px; height: 54px; }
  .floater--cube     { bottom: 25%; right: -2%; width: 48px; height: 48px; }

  .marquee { top: 72%; }
  .marquee__item { font-size: clamp(48px, 13vw, 90px); }
  .marquee__track { animation-duration: 70s; }

  .hero {
    min-height: auto;
    padding-bottom: 72px;
  }
  .hero__intro {
    width: min(500px, 88vw);
    margin-bottom: 22px;
  }
  .hero__intro p {
    font-size: 14px;
    line-height: 1.75;
  }
  .hero__cta { flex-direction: column; width: min(280px, 80vw); }
  .btn { width: 100%; }

  .edu-story { gap: 64px; }
  .edu-story__copy h4 { font-size: clamp(26px, 7vw, 34px); }
  .edu-story__media::before { inset: 12px -10px -12px 10px; }

  .section--contact { padding-left: 16px; padding-right: 16px; }
  .contact-panel {
    border-radius: 20px;
    padding: 38px 24px;
  }
  .contact-panel h2 {
    font-size: clamp(32px, 9vw, 46px);
  }
  .contact-panel > p {
    font-size: 14px;
  }

  .solution-modules,
  .big-numbers,
  .insight-grid,
  .role-grid,
  .learnings,
  .results-row { grid-template-columns: 1fr; }

  .big-number::after { bottom: auto; top: -40px; }
  .role-card::after { bottom: auto; top: -40px; }

  .experiment-gallery { grid-template-columns: 1fr; }

  .path-node { padding: 18px; }
  .path-loop { flex-direction: column; align-items: stretch; }
  .loop-node { text-align: center; }

  .hohem-collage__images { width: 180px; height: 180px; }
  .hohem-collage__images img { width: 120px; height: 120px; }

  .post-stack { width: 280px; height: 240px; }
  .post-card { width: 160px; }
}

/* ==========================================================
   v8 新组件样式
   ========================================================== */

/* ---------- Showcase 整段上移（点导航直接看到内容） ---------- */
.section--showcase { padding-top: 20px; }
.section--showcase .section__head { margin-bottom: 24px; }
.showcase-split { margin-top: 0; }

/* ---------- Showcase：iOS Wheel Picker ---------- */
.showcase-split {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 36% 64%;
  gap: 48px;
  align-items: center;
  padding: 0 24px;
}
.showcase-left { padding: 24px 0; }
.showcase-left__desc {
  max-width: 420px;
  font-size: 16px; line-height: 1.85;
  color: var(--ink);
  font-weight: 500;
}
.showcase-left__hint {
  display: inline-block;
  margin-top: 22px;
  font-size: 12px; letter-spacing: 1.5px;
  color: var(--ink-soft); text-transform: uppercase;
  padding: 6px 14px;
  border: 1px dashed var(--line);
  border-radius: 999px;
}

.showcase-right {
  position: relative;
  height: 580px;
}
.wheel-focus {
  position: absolute;
  left: 0; right: 0; top: 50%;
  transform: translateY(-50%);
  height: 160px;
  z-index: 1;
  pointer-events: none;
  border-top: 1.5px solid var(--ink);
  border-bottom: 1.5px solid var(--ink);
  border-radius: 22px;
  background: rgba(17, 17, 17, 0.035);
}
.wheel-focus__line { display: none; }

.wheel-list {
  position: relative;
  z-index: 2;
  height: 100%;
  overflow-y: auto;
  scroll-snap-type: y mandatory;
  padding: 210px 8px;
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.wheel-list::-webkit-scrollbar { display: none; }

.wheel-item {
  scroll-snap-align: center;
  min-height: 148px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 22px;
  padding: 0 28px;
  margin-bottom: 12px;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--line);
  cursor: pointer;
  user-select: none;
  /* 关键：背景由白变黑的过程极快，避免用户看见变黑 */
  transition: transform 0.18s ease, opacity 0.18s ease, background 0.12s linear, border-color 0.12s linear, box-shadow 0.18s ease;
  will-change: transform, opacity;
}
.wheel-item:hover { border-color: #cfcfc7; }
.wheel-item.is-active {
  background: var(--ink);
  border-color: var(--ink);
  box-shadow: 0 18px 40px rgba(17, 17, 17, 0.16);
}
.wheel-item__num {
  font-size: 13px; font-weight: 700; letter-spacing: 1px;
  color: var(--accent);
  transition: color 0.12s linear;
}
.wheel-item__label {
  font-size: 26px; font-weight: 700; letter-spacing: -0.02em; line-height: 1.15;
  color: var(--ink);
  transition: color 0.12s linear;
}
.wheel-item__case { font-size: 14px; color: var(--ink-soft); margin-top: 2px; transition: color 0.12s linear; }
.wheel-item__tags { font-size: 12px; color: var(--ink-soft); opacity: 0.8; letter-spacing: 0.5px; margin-top: 2px; transition: color 0.12s linear; }
.wheel-item__action {
  font-size: 13px; font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
  transition: color 0.12s linear, opacity 0.12s linear;
}
.wheel-item.is-active .wheel-item__num,
.wheel-item.is-active .wheel-item__label,
.wheel-item.is-active .wheel-item__action { color: #fff; }
.wheel-item.is-active .wheel-item__case,
.wheel-item.is-active .wheel-item__tags { color: rgba(255, 255, 255, 0.72); }

/* ---------- Hollyland：Creator Content 横向跑马灯 ---------- */
.holly-marquee {
  overflow: hidden;
  padding: 22px 0;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
}
.holly-marquee__track {
  display: flex;
  width: max-content;
  animation: holly-marquee 46s linear infinite;
}
.holly-marquee__track img {
  width: 300px; height: 380px;
  object-fit: cover;
  border-radius: 18px;
  margin-right: 22px;
  box-shadow: 0 14px 34px rgba(17, 17, 17, 0.12);
}
@keyframes holly-marquee { to { transform: translateX(-50%); } }

/* ---------- IMC：Strategy 横向链条 ---------- */
.strategy-chain--horizontal {
  flex-direction: row;
  flex-wrap: wrap;
  align-items: stretch;
  max-width: 1120px;
}
.strategy-chain--horizontal .strategy-node {
  flex: 1 1 150px;
  min-width: 150px;
  padding: 20px 18px;
}
.strategy-chain--horizontal .strategy-node b { font-size: 18px; }
.strategy-chain--horizontal .strategy-arrow {
  align-self: center;
  font-size: 20px;
  flex-shrink: 0;
}

/* ---------- IMC：Content System 配图 ---------- */
.track-card__visual { margin-bottom: 16px; }
.track-card__visual img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: 16px;
  display: block;
}
.track-card__visual--grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.track-card__visual--grid img { height: 150px; }

/* ---------- IMC：Prime Day 横向海报轨道 ---------- */
.pd-rotator {
  position: relative;
  max-width: 760px;
  margin: 30px auto 16px;
  padding: 14px 0;
  border-radius: 18px;
  overflow: hidden;
  background: var(--bg-soft);
  box-shadow: inset 0 0 0 1px var(--line);
}
.pd-rotator::before,
.pd-rotator::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 80px;
  z-index: 2;
  pointer-events: none;
}
.pd-rotator::before { left: 0; background: linear-gradient(90deg, var(--bg-soft), rgba(247, 245, 241, 0)); }
.pd-rotator::after { right: 0; background: linear-gradient(270deg, var(--bg-soft), rgba(247, 245, 241, 0)); }
.pd-rotator__track {
  display: flex;
  width: max-content;
  gap: 16px;
  padding: 4px 16px;
  animation: pd-marquee 34s linear infinite;
  will-change: transform;
}
.pd-rotator:hover .pd-rotator__track { animation-play-state: paused; }
.pd-rotator img {
  width: 170px;
  aspect-ratio: 4 / 5;
  object-fit: contain;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 12px 26px rgba(17, 17, 17, 0.1);
}
@keyframes pd-marquee {
  to { transform: translateX(-50%); }
}

/* ---------- 内容创意：爆款数据卡 ---------- */
.viral-data-card {
  display: flex;
  align-items: center;
  gap: 34px;
  background: var(--ink);
  color: #fff;
  border-radius: 22px;
  padding: 28px 34px;
  margin-bottom: 40px;
}
.viral-data-card img {
  width: 240px;
  height: 200px;
  object-fit: cover;
  border-radius: 14px;
  flex-shrink: 0;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.35);
}
.viral-data-card__body b {
  display: block;
  font-size: clamp(44px, 6vw, 68px);
  font-weight: 700; letter-spacing: -0.02em; line-height: 1;
  color: var(--accent);
}
.viral-data-card__body span {
  display: block;
  font-size: 14px; letter-spacing: 2px;
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
  margin: 8px 0 12px;
}
.viral-data-card__body p {
  font-size: 14px; line-height: 1.7;
  color: rgba(255, 255, 255, 0.8);
  max-width: 380px;
}

/* ---------- 内容创意：爆款轮播 ---------- */
.viral-carousel-wrap {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 44px;
  align-items: center;
  gap: 12px;
}
.viral-carousel {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding: 6px 4px 18px;
  scroll-snap-type: x mandatory;
}
.viral-carousel::-webkit-scrollbar { height: 6px; }
.viral-carousel::-webkit-scrollbar-track { background: transparent; }
.viral-carousel::-webkit-scrollbar-thumb { background: var(--line); border-radius: 999px; }
.viral-card {
  flex: 0 0 200px;
  scroll-snap-align: start;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.viral-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.viral-card--pending { border-style: dashed; }
.viral-card__thumb { position: relative; }
.viral-card__thumb img {
  width: 100%;
  height: 268px;
  object-fit: cover;
  display: block;
}
.viral-card__badge {
  position: absolute;
  top: 10px; left: 10px;
  font-size: 11px; font-weight: 700; letter-spacing: 0.5px;
  background: rgba(17, 17, 17, 0.85); color: #fff;
  padding: 4px 10px; border-radius: 999px;
  backdrop-filter: blur(4px);
}
.viral-card__info {
  display: flex; align-items: center; justify-content: space-between;
  gap: 8px;
  padding: 12px 14px;
}
.viral-card__views { font-size: 15px; font-weight: 700; color: var(--ink); }
.viral-card__hint { font-size: 11px; color: var(--ink-soft); }
.viral-hint { text-align: center; font-size: 12px; color: var(--ink-soft); margin-top: 8px; }
.viral-carousel__arrow {
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: rgba(17, 17, 17, 0.82);
  color: #fff;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  transition: background 0.25s ease, transform 0.25s ease;
}
.viral-carousel__arrow:hover { background: var(--accent); transform: scale(1.05); }
.viral-carousel__arrow:focus-visible {
  outline: 3px solid rgba(255, 95, 46, 0.32);
  outline-offset: 3px;
}

/* ---------- 内容创意：促销海报焦点轮播 ---------- */
.poster-carousel {
  position: relative;
  max-width: 920px;
  height: 540px;
  margin: 40px auto 0;
  border-radius: 20px;
  overflow: hidden;
  background: linear-gradient(180deg, #fff, var(--bg-soft));
}
.poster-carousel__track {
  position: relative;
  width: 100%;
  height: 100%;
}
.poster-carousel img {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(360px, 52vw);
  height: 88%;
  object-fit: contain;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 18px 44px rgba(17, 17, 17, 0.12);
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.74);
  transition: transform 0.85s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.65s ease, filter 0.65s ease;
  filter: blur(2px) saturate(0.75);
  pointer-events: none;
}
.poster-carousel img.is-active {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
  filter: none;
  z-index: 4;
}
.poster-carousel img.is-prev {
  opacity: 0.36;
  transform: translate(-112%, -50%) scale(0.78);
  z-index: 2;
}
.poster-carousel img.is-next {
  opacity: 0.36;
  transform: translate(12%, -50%) scale(0.78);
  z-index: 2;
}
.poster-carousel img.is-far-prev {
  opacity: 0.14;
  transform: translate(-168%, -50%) scale(0.62);
  z-index: 1;
}
.poster-carousel img.is-far-next {
  opacity: 0.14;
  transform: translate(68%, -50%) scale(0.62);
  z-index: 1;
}
.poster-carousel__arrow {
  position: absolute;
  top: 50%;
  z-index: 6;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: rgba(17, 17, 17, 0.78);
  color: #fff;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  transform: translateY(-50%);
  transition: background 0.25s ease, transform 0.25s ease;
}
.poster-carousel__arrow:hover { background: var(--accent); transform: translateY(-50%) scale(1.05); }
.poster-carousel__arrow--prev { left: 18px; }
.poster-carousel__arrow--next { right: 18px; }
.poster-carousel__status {
  position: absolute;
  right: 16px;
  bottom: 16px;
  display: inline-flex;
  align-items: center;
  min-width: 64px;
  justify-content: center;
  padding: 8px 11px;
  border-radius: 999px;
  background: rgba(17, 17, 17, 0.78);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  backdrop-filter: blur(8px);
}
@media (max-width: 720px) {
  .viral-carousel-wrap {
    grid-template-columns: 38px minmax(0, 1fr) 38px;
    gap: 8px;
  }
  .viral-carousel__arrow {
    width: 38px;
    height: 38px;
  }
  .poster-carousel {
    max-width: 94vw;
    height: 440px;
  }
  .poster-carousel img { width: min(270px, 66vw); height: 82%; }
  .poster-carousel img.is-prev { transform: translate(-104%, -50%) scale(0.72); }
  .poster-carousel img.is-next { transform: translate(4%, -50%) scale(0.72); }
  .poster-carousel img.is-far-prev,
  .poster-carousel img.is-far-next { opacity: 0; }
  .poster-carousel__arrow {
    width: 38px;
    height: 38px;
  }
  .poster-carousel__arrow--prev { left: 10px; }
  .poster-carousel__arrow--next { right: 10px; }
  .pd-rotator img { width: 140px; }
  .pd-rotator__track { animation-duration: 28s; }
}

/* ---------- 内容创意：PPT ---------- */
.ppt-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}
.ppt-row img {
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 14px 36px rgba(17, 17, 17, 0.1);
}
.ppt-link {
  display: inline-block;
  font-size: 14px; font-weight: 600;
  color: var(--accent);
  border-bottom: 1.5px solid var(--accent);
  padding-bottom: 2px;
  transition: opacity 0.25s ease;
}
.ppt-link:hover { opacity: 0.7; }

/* ---------- 工具运用：AI 工具 ---------- */
.tools-ai-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  margin-top: 34px;
}
.tool-card {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.tool-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.tool-card > img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 14px;
  margin-bottom: 16px;
}
.tool-card--wide { grid-column: 1 / -1; }
.tool-card__gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}
.tool-card__gallery img {
  width: 100%;
  height: 170px;
  object-fit: cover;
  border-radius: 14px;
}
.tool-card__gallery--fit {
  gap: 16px;
  background: var(--bg);
  padding: 8px;
  border-radius: 16px;
}
.tool-card__gallery--fit img {
  height: 220px;
  object-fit: contain;
  background: #fff;
  border: 1px solid var(--line);
}
.tool-card__emoji {
  height: 200px;
  display: flex; align-items: center; justify-content: center;
  font-size: 72px;
  background: linear-gradient(135deg, #f0f4ff, #e6ecff);
  border-radius: 14px;
  margin-bottom: 16px;
}
.tool-card h4 { font-size: 17px; font-weight: 700; margin-bottom: 8px; color: var(--ink); }
.tool-card p { font-size: 14px; color: var(--ink-soft); line-height: 1.7; }

/* ---------- 工具运用：KOL 看板 ---------- */
.kol-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 30px;
}
.kol-board img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 14px;
  box-shadow: 0 10px 26px rgba(17, 17, 17, 0.08);
  transition: transform 0.35s ease;
}
.kol-board img:hover { transform: translateY(-4px); }
.kol-board--fit img {
  object-fit: contain;
  background: #fff;
  border: 1px solid var(--line);
  aspect-ratio: 16 / 10;
}

/* ---------- 实习经历：垂直时间轴（4 段，按时间由近到远） ---------- */
.timeline {
  max-width: 820px; margin: 0 auto;
  position: relative;
  padding-left: 34px;
}
.timeline::before {
  content: "";
  position: absolute; top: 8px; bottom: 8px; left: 8px;
  width: 2px; background: var(--line);
}
.timeline__item { position: relative; margin-bottom: 44px; }
.timeline__dot {
  position: absolute; top: 8px; left: -32px;
  width: 14px; height: 14px;
  background: var(--ink);
  border: 3px solid var(--bg);
  border-radius: 50%;
  box-shadow: 0 0 0 2px var(--line);
}
.timeline__body {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 28px;
  box-shadow: 0 8px 24px rgba(17,17,17,0.05);
}
.timeline__top { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 8px; flex-wrap: wrap; }
.timeline__role { font-size: 19px; font-weight: 700; }
.timeline__date { font-size: 13px; font-weight: 600; color: var(--ink-soft); }
.timeline__org { font-size: 15px; color: var(--ink-soft); margin-bottom: 14px; }
.timeline__points { display: flex; flex-direction: column; gap: 10px; }
.timeline__points li { font-size: 14.5px; color: #3a3a36; line-height: 1.65; }

/* ---------- 关于我：自由散落标签 ---------- */
.about-radial {
  position: relative;
  max-width: 920px;
  height: 600px;
  margin: 0 auto;
}
.about-center {
  position: absolute;
  left: 50%; top: 49%;
  transform: translate(-50%, -50%);
  width: 132px; height: 132px;
  border-radius: 50%;
  background: var(--ink); color: #fff;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 4px;
  z-index: 2;
  box-shadow: 0 18px 44px rgba(17, 17, 17, 0.2);
}
.about-center span { font-size: 20px; font-weight: 700; letter-spacing: 1px; }
.about-center small { font-size: 11px; color: rgba(255, 255, 255, 0.65); letter-spacing: 1px; }

.about-orbit {
  position: absolute;
  left: var(--x); top: var(--y);
  width: 0; height: 0;
  z-index: 1;
  animation: about-drift 5.4s ease-in-out var(--delay) infinite;
}
.about-orbit__card {
  position: absolute;
  left: 0; top: 0;
  transform: translate(-50%, -50%);
  min-width: 156px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px 20px;
  text-align: center;
  box-shadow: 0 12px 30px rgba(17, 17, 17, 0.08);
  z-index: 2;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
  animation: about-breathe 4.8s ease-in-out var(--delay) infinite;
}
.about-orbit__card:hover { transform: translate(-50%, -50%) scale(1.06); box-shadow: var(--shadow); }
.about-orbit__card b {
  display: block;
  font-size: 15px; font-weight: 700;
  margin-bottom: 3px;
  white-space: nowrap;
  color: var(--ink);
}
.about-orbit__card span { font-size: 12px; color: var(--ink-soft); letter-spacing: 0.5px; }

@keyframes about-drift {
  0%, 100% { transform: translate3d(0, 3px, 0); }
  50% { transform: translate3d(var(--drift-x), -7px, 0); }
}
@keyframes about-breathe {
  0%, 100% { box-shadow: 0 10px 26px rgba(17, 17, 17, 0.07); }
  50% { box-shadow: 0 17px 38px rgba(17, 17, 17, 0.13); }
}
.about-center { animation: about-center-breathe 4.2s ease-in-out infinite; }
@keyframes about-center-breathe {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  50% { transform: translate(-50%, -50%) scale(1.025); }
}

/* ---------- 全站返回顶部 ---------- */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 22px;
  z-index: 2200;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  width: 48px;
  height: 48px;
  padding: 0 15px;
  overflow: hidden;
  box-sizing: border-box;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 12px 30px rgba(17, 17, 17, 0.22);
  transition: width 0.35s cubic-bezier(0.22, 1, 0.36, 1), gap 0.35s ease, transform 0.25s ease, background 0.25s ease;
}
.back-to-top:hover,
.back-to-top:focus-visible {
  width: 132px;
  gap: 8px;
  background: #333;
  transform: translateY(-2px);
}
.back-to-top:focus-visible { outline: 3px solid rgba(255, 95, 46, 0.35); outline-offset: 3px; }
.back-to-top__icon { flex: 0 0 auto; font-size: 18px; line-height: 1; }
.back-to-top__label {
  max-width: 0;
  opacity: 0;
  overflow: hidden;
  white-space: nowrap;
  transition: max-width 0.35s ease, opacity 0.2s ease;
}
.back-to-top:hover .back-to-top__label,
.back-to-top:focus-visible .back-to-top__label {
  max-width: 72px;
  opacity: 1;
}
.case-study .detail__float { bottom: 84px; }

/* ---------- 「进行中」小标签 ---------- */
.tag-pending {
  display: inline-block;
  font-style: normal;
  font-size: 11px; font-weight: 700; letter-spacing: 1px;
  color: #fff; background: var(--accent);
  padding: 3px 10px; border-radius: 999px;
  margin-left: 8px;
  vertical-align: 2px;
}

/* ==========================================================
   v8 响应式补充
   ========================================================== */
@media (max-width: 980px) {
  .showcase-split { grid-template-columns: 1fr; gap: 20px; }
  .showcase-left { text-align: center; }
  .showcase-left__desc { margin: 26px auto 0; }
  .showcase-right { height: 560px; }

  .kol-board { grid-template-columns: repeat(2, 1fr); }
  .track-card__visual--grid img { height: 130px; }
}

@media (max-width: 760px) {
  .showcase-right { height: 520px; }
  .wheel-item {
    grid-template-columns: auto 1fr;
    gap: 14px;
    padding: 0 20px;
  }
  .wheel-item__action { display: none; }
  .wheel-item__label { font-size: 21px; }
  .wheel-list { padding: 220px 6px; }
  .wheel-focus { height: 160px; }

  .holly-marquee__track img { width: 230px; height: 300px; }

  .strategy-chain--horizontal { flex-direction: column; }

  .viral-data-card { flex-direction: column; text-align: center; padding: 24px; }
  .viral-data-card img { width: 100%; height: auto; max-height: 220px; }
  .viral-data-card__body p { max-width: none; }
  .ppt-row { grid-template-columns: 1fr; }

  .tools-ai-grid { grid-template-columns: 1fr; }
  .tool-card--wide { grid-column: auto; }
  .tool-card__gallery,
  .tool-card__gallery--fit { grid-template-columns: repeat(2, 1fr); }
  .kol-board,
  .kol-board--fit { grid-template-columns: 1fr; }
  .kol-board--fit img { aspect-ratio: 16 / 9; }

  /* 关于我：放射状 → 卡片网格（关闭悬浮动画） */
  .about-radial {
    height: auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding-top: 36px;
  }
  .about-center {
    position: relative;
    left: auto; top: auto;
    transform: none;
    grid-column: 1 / -1;
    margin: 0 auto 8px;
    width: 120px; height: 120px;
    animation: none;
  }
  .about-orbit {
    position: relative;
    left: auto; top: auto;
    width: auto; height: auto;
    transform: none;
    display: flex; justify-content: center;
    animation: none;
  }
  .about-orbit::before { display: none; }
  .about-orbit__dot { display: none; animation: none; }
  .about-orbit__card {
    position: relative;
    left: auto; top: auto;
    transform: none;
    width: 100%;
    max-width: 220px;
    animation: none;
  }
  .about-orbit__card:hover { transform: none; }

  .pd-rotator { max-width: 100%; }
  .creator-rail__nav { top: 50%; }
}

@media (max-width: 420px) {
  .back-to-top {
    right: 14px;
    bottom: 14px;
    width: 44px;
    height: 44px;
    padding: 0 13px;
  }
  .case-study .detail__float { bottom: 70px; }
}