/* ==========================================================================
   案例展示页 case.html —— 按《麦秸映像改版/4案例展示.png》设计稿实现
   仅在本页加载，不影响其他页面
   ========================================================================== */

:root {
  --mj-blue: #1677ff;
  --mj-text: #333;
  --mj-sub: #999;
  --mj-line: #e4e7ed;
  --mj-gray: #f5f6f8;
  --mj-dark: #0d1b2c;
}

body.page-case { background: #fff; }

/* ============ 顶栏 ============ */
body.page-case .header {
  background: #fff;
  border-bottom: 1px solid rgba(0, 0, 0, .04);
  backdrop-filter: none;
}

/* ============ 横幅 ============ */
.ab-hero {
  position: relative; display: flex; align-items: center; justify-content: center;
  min-height: 420px; padding: 140px 0 90px; text-align: center; color: #fff;
  background: center/cover no-repeat;
  overflow: hidden; isolation: isolate;
}

/* ============ 筛选栏 ============ */
.case-bar { background: #fff; border-bottom: 1px solid var(--mj-gray); }
.case-bar .filters {
  display: flex; justify-content: center; flex-wrap: wrap; gap: 0;
  margin: 0; padding: 0; border: 0;
}
.case-bar .filters button,
.case-bar .filters a {
  position: relative; padding: 24px 4px; margin: 0 32px;
  font-size: 16px; color: var(--mj-text); background: none;
  border: 0; border-radius: 0; transition: color .2s;
  text-decoration: none; display: inline-block; cursor: pointer;
}
.case-bar .filters button::after,
.case-bar .filters a::after {
  content: ""; position: absolute; left: 50%; bottom: 0; transform: translateX(-50%);
  width: 0; height: 3px; background: var(--mj-blue); border-radius: 2px; transition: width .2s;
}
.case-bar .filters button:hover,
.case-bar .filters a:hover { color: var(--mj-blue); }
.case-bar .filters button.is-active,
.case-bar .filters a.is-active { color: var(--mj-blue); background: none; border: 0; font-weight: 600; }
.case-bar .filters button.is-active::after,
.case-bar .filters a.is-active::after { width: 32px; }

/* ============ 案例列表 ============ */
.case-sec { background: #f7f7f7; padding: 56px 0 48px; }
.case-wrap { max-width: 1460px; margin: 0 auto; padding: 0 24px; }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; }

.case {
  display: flex; flex-direction: column;
  padding: 24px 24px 20px; background: #fff;
  border: 0; border-radius: 4px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, .04);
  transition: box-shadow .25s, transform .25s;
}
.case:hover { transform: translateY(-4px); box-shadow: 0 10px 26px rgba(0, 0, 0, .1); }
.case[hidden] { display: none; }

.case__pic { aspect-ratio: 4 / 3; overflow: hidden; }
.case__pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.case:hover .case__pic img { transform: scale(1.05); }

.case__info { padding: 18px 2px 0; }
.case__titlerow { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.case__titlerow h3 {
  margin: 0; font-size: 18px; font-weight: 500; color: var(--mj-text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.case__tag { flex: 0 0 auto; font-size: 14px; color: var(--mj-sub); }
.case__sub { margin: 10px 0 0; font-size: 14px; color: var(--mj-sub); }

.case__btns {
  display: flex; gap: 18px; margin-top: 18px; padding-top: 18px;
  border-top: 1px dashed var(--mj-line);
}
.case__btn {
  flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 40px; font-size: 14px; color: var(--mj-text);
  border: 1px solid var(--mj-line); border-radius: 3px; background: #fff; transition: .2s;
}
.case__btn svg { width: 18px; height: 18px; }
.case__btn:hover { color: var(--mj-blue); border-color: var(--mj-blue); }

/* ============ 分页 ============ */
.case-sec .pager { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 8px; margin-top: 48px; }
.case-sec .pager .pager__btn,
.case-sec .pager .pager__num,
.case-sec .pager .pager__ellipsis,
.case-sec .pager .pager__jump {
  min-width: 32px; height: 32px; padding: 0;
  font-size: 14px; color: #606266;
  background: none; border: 0; border-radius: 0;
}
.case-sec .pager .pager__btn,
.case-sec .pager .pager__num {
  display: inline-flex; align-items: center; justify-content: center;
  background: #fff; border: 1px solid var(--mj-line); border-radius: 4px; transition: .2s;
}
.case-sec .pager .pager__btn svg { width: 14px; height: 14px; }
.case-sec .pager .pager__num:hover,
.case-sec .pager .pager__btn:hover { color: var(--mj-blue); background: #fff; border-color: var(--mj-blue); }
.case-sec .pager .pager__num.is-current { color: #fff; background: var(--mj-blue); border-color: var(--mj-blue); }
.case-sec .pager .pager__btn.is-disabled { opacity: .45; cursor: not-allowed; pointer-events: none; }
.case-sec .pager .pager__ellipsis { letter-spacing: 2px; display: inline-flex; align-items: center; justify-content: center; }
.case-sec .pager .pager__jump { display: inline-flex; align-items: center; gap: 8px; margin-left: 10px; border: 0; background: none; }
.pager__jump input {
  width: 46px; height: 32px; padding: 0 6px; text-align: center;
  font-size: 14px; color: #606266;
  border: 1px solid var(--mj-line); border-radius: 4px; outline: none;
}
.pager__jump input:focus { border-color: var(--mj-blue); }

/* ============ 在线留言 ============ */
.msg-sec { background: var(--mj-gray); padding: 30px 0 72px; }
.msg-title { margin: 0 0 26px; font-size: 20px; font-weight: 700; color: var(--mj-text); }
.msg-form { max-width: 1400px; }
.msg-row { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.msg-form input, .msg-form textarea {
  width: 100%; padding: 13px 16px; margin: 0;
  font-size: 14px; color: var(--mj-text);
  background: #fff; border: 1px solid var(--mj-line); border-radius: 3px;
  outline: none; transition: border-color .2s;
}
.msg-form input::placeholder, .msg-form textarea::placeholder { color: #a8abb2; }
.msg-form input:focus, .msg-form textarea:focus { border-color: var(--mj-blue); }
.msg-form .msg-row input { margin-bottom: 24px; }
.msg-form textarea { display: block; resize: vertical; min-height: 132px; }
.msg-form input.is-error, .msg-form textarea.is-error { border-color: #e5484d; }
.msg-tip { min-height: 24px; margin: 12px 0 0; text-align: center; font-size: 13px; }
.msg-submit {
  display: block; width: 440px; max-width: 100%; height: 44px; margin: 10px auto 0;
  font-size: 15px; color: #fff; background: var(--mj-blue);
  border: 0; border-radius: 3px; cursor: pointer; transition: background .2s;
}
.msg-submit:hover { background: #3d8bff; }

/* ============ 页脚 ============ */
body.page-case .footer { padding: 0; background: var(--mj-dark); color: rgba(255, 255, 255, .65); }
.footer__main {
  max-width: 1440px; margin: 0 auto; padding: 52px 24px 40px;
  display: grid; grid-template-columns: 1.15fr .8fr 1.15fr .9fr 1.25fr; gap: 30px;
}
.footer__logo { display: flex; align-items: center; gap: 12px; }
.footer__logo img { width: 44px; height: 44px; border-radius: 8px; }
.footer__logo-txt { display: flex; flex-direction: column; line-height: 1.4; }
.footer__logo-txt strong { font-size: 22px; color: #fff; letter-spacing: 2px; }
.footer__logo-txt span { font-size: 11px; color: rgba(255, 255, 255, .45); letter-spacing: 1px; }
.footer__qr { margin-top: 24px; display: flex; flex-direction: column; align-items: flex-start; gap: 8px; }
.footer__qr img { width: 88px; height: 88px; background: #fff; padding: 4px; border-radius: 3px; }
.footer__qr span { font-size: 12px; color: rgba(255, 255, 255, .55); }

.footer__col h2 { margin: 6px 0 18px; font-size: 16px; font-weight: 600; color: #fff; }
.footer__col ul li { padding: 0 0 14px; font-size: 13.5px; }
.footer__col a { color: rgba(255, 255, 255, .62); }
.footer__col a:hover { color: #fff; }
.footer__two { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }
.footer__two ul li { padding: 0 0 14px; font-size: 13.5px; }

.footer__hot { padding-top: 6px; font-size: 13px; }
.footer__hot p { margin: 0 0 12px; }
.footer__hot-line { display: flex; align-items: center; gap: 10px; }
.footer__hot-line svg { width: 26px; height: 26px; color: var(--mj-blue); }
.footer__hot-line span { font-size: 15px; color: #fff; }
.footer__hot-line b { font-size: 20px; letter-spacing: .5px; }
.footer__time { color: rgba(255, 255, 255, .5); }
.footer__beian { display: flex; align-items: center; gap: 6px; font-size: 12.5px; }
.footer__beian img { width: 14px; height: 14px; border-radius: 50%; }
.footer__hot a { color: rgba(255, 255, 255, .62); }
.footer__hot a:hover { color: #fff; }

.footer__linkbar { border-top: 1px solid rgba(255, 255, 255, .08); padding: 16px 0; }
.footer__linkbar .container { max-width: 1440px; }
.footer__linkbar p { margin: 0; font-size: 12.5px; color: rgba(255, 255, 255, .4); }
.footer__linkbar a { margin-right: 18px; color: rgba(255, 255, 255, .4); }
.footer__linkbar a:hover { color: #fff; }

/* ============ 响应式 ============ */
@media (max-width: 1280px) {
  .case-grid { gap: 24px; }
}

@media (max-width: 1080px) {
  body.page-case .header .container { height: 72px; }
  body.page-case .brand img { height: 42px; }
  body.page-case .header__hot-txt b { font-size: 17px; }
  .ab-hero { min-height: 380px; }
  .ab-hero__text { font-size: 26px; }
  .ab-hero__text .em { font-size: 32px; }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .footer__main { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  body.page-case .header__hot { display: none; }
  body.page-case .header__search { display: none; }
  .case-bar .filters button { margin: 0 16px; padding: 18px 2px; font-size: 15px; }
}

@media (max-width: 640px) {
  .ab-hero { min-height: 280px; }
  .ab-hero__text { font-size: 20px; }
  .ab-hero__text .em { font-size: 25px; }
  .case-sec { padding: 36px 0 32px; }
  .case-grid { grid-template-columns: 1fr; gap: 20px; }
  .case { padding: 16px 16px 14px; }
  .msg-row { grid-template-columns: 1fr; gap: 0; }
  .msg-row input { margin-bottom: 16px; }
  .msg-submit { width: 100%; }
  .footer__main { grid-template-columns: 1fr; gap: 26px; padding: 36px 16px 28px; }
  .pager__jump { margin-left: 0; }
}