/* 网才产品迭代中心 — 苹果/谷歌式简洁科技风 */
:root {
  --bg: #f7f3f0;
  --card: #ffffff;
  --text: #1d1d1f;
  --text-2: #6e6e73;
  --text-3: #86868b;
  --accent: #e85d1f;               /* 前程无忧品牌橙 */
  --accent-soft: #fdeee3;
  --border: #e8e2dd;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(0,0,0,.04), 0 4px 16px rgba(0,0,0,.06);
  --shadow-hover: 0 2px 4px rgba(0,0,0,.06), 0 12px 32px rgba(0,0,0,.12);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro SC", "SF Pro Text",
    "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
  --ease-spring: cubic-bezier(.22, 1, .36, 1);
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  line-height: 1.65;
}

/* 内容区底色：品牌暖橙→科技蓝渐变，明显但柔和 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 62% 46% at 88% 0%, #ff7a4526, transparent 62%),
    radial-gradient(ellipse 56% 42% at 4% 100%, #42a5f522, transparent 62%),
    linear-gradient(180deg, #fdf1e9 0%, #f9f4f0 34%, #eef3fb 100%);
}

/* ── Hero 首屏 ── */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }

/* 极光光斑 */
.aurora {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: .55;
}
.aurora-a {
  width: 560px; height: 560px;
  background: radial-gradient(circle, #ffb199 0%, #ff7a5933 55%, transparent 70%);
  top: -160px; right: 8%;
  animation: drift-a 26s ease-in-out infinite alternate;
}
.aurora-b {
  width: 480px; height: 480px;
  background: radial-gradient(circle, #7ec8ff 0%, #42a5f533 55%, transparent 70%);
  bottom: -180px; left: -120px;
  animation: drift-b 32s ease-in-out infinite alternate;
}
.aurora-c {
  width: 380px; height: 380px;
  background: radial-gradient(circle, #ffd39e 0%, #ffb19933 55%, transparent 70%);
  top: 30%; left: 34%;
  animation: drift-a 38s ease-in-out infinite alternate-reverse;
}
@keyframes drift-a {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(-60px, 50px) scale(1.12); }
}
@keyframes drift-b {
  from { transform: translate(0, 0) scale(1.05); }
  to   { transform: translate(70px, -40px) scale(.95); }
}

/* 细网格纹理 */
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,0,0,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 75%);
}

/* 底部渐隐到内容区 */
.hero-fade {
  position: absolute; left: 0; right: 0; bottom: 0;
  height: 140px;
  background: linear-gradient(transparent, var(--bg));
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 1240px;
  margin: 0 auto;
  padding: 64px 40px 120px;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 48px;
  align-items: center;
  width: 100%;
}

.hero-eyebrow {
  display: inline-flex;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: #e05a3a;
  background: #fff1eb;
  border: 1px solid #ffd9c7;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 26px;
  animation: heroUp .7s var(--ease-spring) both;
}

.hero-title {
  font-size: clamp(40px, 5.6vw, 72px);
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.14;
  color: var(--text);
  white-space: pre-wrap;
  min-height: 2.28em;
  margin-bottom: 22px;
  animation: heroUp .7s .08s var(--ease-spring) both;
}
.tw-cursor {
  display: inline-block;
  width: 3px;
  height: .95em;
  background: #ff6b4a;
  vertical-align: -0.08em;
  margin-left: 4px;
  animation: blink 1s step-end infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.hero-sub {
  font-size: 17.5px;
  color: var(--text-2);
  line-height: 1.8;
  margin-bottom: 38px;
  animation: heroUp .7s .16s var(--ease-spring) both;
}

.hero-cta {
  display: flex; gap: 14px; flex-wrap: wrap;
  margin-bottom: 52px;
  animation: heroUp .7s .24s var(--ease-spring) both;
}
.btn {
  font-family: var(--font);
  font-size: 15.5px;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: 999px;
  cursor: pointer;
  transition: transform .2s var(--ease-spring), box-shadow .2s, background .2s, color .2s;
}
.btn-primary {
  border: none;
  color: #fff;
  background: linear-gradient(135deg, #ff7a45, #f03f3a);
  box-shadow: 0 6px 20px rgba(240, 80, 50, .35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(240, 80, 50, .45);
}
.btn-arrow {
  display: inline-block;
  transition: transform .2s var(--ease-spring);
}
.btn-primary:hover .btn-arrow { transform: translateX(4px); }
.btn-ghost {
  background: rgba(255,255,255,.7);
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover {
  border-color: #ff7a45;
  color: #e05a3a;
  transform: translateY(-2px);
}

/* 数据统计带 */
.hero-stats {
  display: flex; gap: 44px;
  animation: heroUp .7s .32s var(--ease-spring) both;
}
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-num {
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.stat-num .stat-plus { color: #ff6b4a; }
.stat-label { font-size: 13px; color: var(--text-3); }

@keyframes heroUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── 吉祥物动效（三层嵌套：浮动 / 摇摆 / 翻转循环） ── */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.mascot-glow {
  position: absolute;
  width: 380px; height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, #ff7a4530 0%, #42a5f520 55%, transparent 70%);
  filter: blur(30px);
}
.mascot-float { animation: floatY 5.2s ease-in-out infinite alternate; }
@keyframes floatY {
  from { transform: translateY(0); }
  to   { transform: translateY(-16px); }
}
.mascot-sway { animation: sway 6s ease-in-out infinite alternate; }
@keyframes sway {
  from { transform: rotate(-5deg); }
  to   { transform: rotate(5deg); }
}
/* 缓慢转动 → 淡出 → 换角度（镜像+倾斜）→ 淡入 → 循环；翻转都发生在透明期 */
.mascot-cycle { animation: cycle 18s ease-in-out infinite; }
@keyframes cycle {
  0%, 38%   { opacity: 1; transform: scaleX(1) rotate(0deg); }
  43%, 47%  { opacity: 0; transform: scaleX(1) rotate(10deg) translateY(-10px); }
  52%       { opacity: 0; transform: scaleX(-1) rotate(-10deg) translateY(-10px); }
  57%, 88%  { opacity: 1; transform: scaleX(-1) rotate(0deg); }
  93%       { opacity: 0; transform: scaleX(-1) rotate(-10deg) translateY(-10px); }
  96%       { opacity: 0; transform: scaleX(1) rotate(0deg); }
  100%      { opacity: 1; transform: scaleX(1) rotate(0deg); }
}
.mascot {
  width: min(380px, 34vw);
  display: block;
  filter: drop-shadow(0 24px 40px rgba(240, 90, 40, .25));
}

/* ── 滚动渐入（scroll-reveal） ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .55s var(--ease-spring), transform .55s var(--ease-spring);
}
.reveal.in { opacity: 1; transform: translateY(0); }

/* ── 减少动效偏好 ── */
@media (prefers-reduced-motion: reduce) {
  .aurora, .mascot-float, .mascot-sway, .mascot-cycle,
  .tw-cursor, .hero-eyebrow, .hero-title, .hero-sub, .hero-cta, .hero-stats {
    animation: none !important;
  }
  .reveal { opacity: 1; transform: none; transition: none; }
  .card.anim-in { opacity: 1; animation: none; }
}

/* ── 顶栏 ── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245,245,247,.82);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 14px 28px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand { display: flex; align-items: baseline; gap: 10px; white-space: nowrap; }
.brand-logo-img {
  height: 30px;
  align-self: center;
  display: block;
  border-radius: 7px;
}
.brand-name { font-size: 18px; font-weight: 600; letter-spacing: .5px; }
.brand-sub { font-size: 12px; color: var(--text-3); }

.search-box {
  flex: 1;
  max-width: 560px;
  margin: 0 auto;
  position: relative;
  display: flex;
  align-items: center;
}
.search-icon {
  position: absolute; left: 14px;
  width: 16px; height: 16px;
  color: var(--text-3);
  pointer-events: none;
}
#search-input {
  width: 100%;
  padding: 10px 44px 10px 40px;
  font-size: 15px;
  font-family: var(--font);
  color: var(--text);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
  outline: none;
  transition: box-shadow .2s, border-color .2s;
}
#search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(0,113,227,.15);
}
.search-kbd {
  position: absolute; right: 14px;
  font-size: 12px; color: var(--text-3);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 7px;
  font-family: var(--font);
}
.search-status { font-size: 13px; color: var(--text-2); white-space: nowrap; min-width: 90px; }

/* ── 整体布局：整页单一内容区 ── */
.layout {
  max-width: 1040px;
  margin: 0 auto;
  padding: 26px 28px 72px;
  scroll-margin-top: 76px; /* CTA/锚点跳转时不被吸顶栏遮挡 */
}

/* ── 视图栏：切换器 + 筛选 ── */
.view-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.view-count { font-size: 13px; color: var(--text-3); margin-left: auto; }

/* 分段切换器（带滑动拇指） */
.view-switch {
  position: relative;
  display: inline-flex;
  background: #e8e8ea;
  border-radius: 999px;
  padding: 3px;
}
.switch-thumb {
  position: absolute;
  top: 3px; left: 0;
  height: calc(100% - 6px);
  background: #fff;
  border-radius: 999px;
  box-shadow: 0 1px 4px rgba(0,0,0,.12);
  transition: transform .28s var(--ease-spring), width .28s var(--ease-spring);
}
.switch-btn {
  position: relative;
  z-index: 1;
  border: none;
  background: none;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  padding: 8px 22px;
  cursor: pointer;
  border-radius: 999px;
  transition: color .2s;
}
.switch-btn.active { color: var(--text); font-weight: 600; }

/* ── 模块下拉 ── */
.dropdown { position: relative; }
.dropdown-btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 9px 16px;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: box-shadow .2s, border-color .2s;
}
.dropdown-btn:hover { border-color: var(--accent); }
.dropdown-caret {
  font-size: 11px;
  color: var(--text-3);
  transition: transform .22s var(--ease-spring);
}
.dropdown.open .dropdown-caret { transform: rotate(180deg); }

.dropdown-panel {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 240px;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 8px 40px rgba(0,0,0,.14), 0 0 0 1px rgba(0,0,0,.04);
  padding: 6px;
  z-index: 60;
  opacity: 0;
  transform: translateY(-6px) scale(.98);
  transform-origin: top left;
  pointer-events: none;
  transition: opacity .18s var(--ease-spring), transform .18s var(--ease-spring);
}
.dropdown.open .dropdown-panel {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
.dropdown-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  border: none;
  background: none;
  font-family: var(--font);
  font-size: 14px;
  color: var(--text);
  padding: 9px 12px;
  border-radius: 9px;
  cursor: pointer;
  text-align: left;
  transition: background .14s;
}
.dropdown-item:hover { background: var(--bg); }
.dropdown-item.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

/* ── 月份筛选 ── */
.month-filter { display: flex; flex-wrap: wrap; gap: 8px; }
.month-pill {
  padding: 7px 17px;
  font-size: 13.5px;
  font-family: var(--font);
  color: var(--text-2);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  transition: all .18s;
}
.month-pill:hover { border-color: var(--accent); color: var(--accent); }
.month-pill.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 500;
}

/* ── 主区域切换动效 ── */
.main-view.view-enter { animation: viewIn .3s var(--ease-spring); }
@keyframes viewIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── 分组与折叠 ── */
.group { margin-bottom: 8px; }
.group-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-2);
  padding: 4px 2px 12px;
  display: flex; align-items: center; gap: 8px;
}
.group-badge {
  font-size: 11.5px;
  font-weight: 500;
  color: var(--text-3);
  background: #ececee;
  border-radius: 999px;
  padding: 1px 9px;
  white-space: nowrap;
}

details.month-fold { margin-bottom: 10px; }
details.month-fold > summary {
  list-style: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-2);
  padding: 6px 2px 12px;
  display: flex; align-items: center; gap: 7px;
  user-select: none;
}
details.month-fold > summary::-webkit-details-marker { display: none; }
details.month-fold > summary::before {
  content: "▸";
  display: inline-block;
  transition: transform .2s var(--ease-spring);
  font-size: 11px;
  color: var(--text-3);
}
details.month-fold[open] > summary::before { transform: rotate(90deg); }
.fold-cards { display: flex; flex-direction: column; gap: 14px; padding-bottom: 10px; }

/* ── 功能卡片 ── */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 32px;
  transition: box-shadow .22s, transform .22s;
}
.card:hover { box-shadow: var(--shadow-hover); transform: translateY(-1px); }

/* 卡片入场由 scroll-reveal 接管（.reveal/.in） */

.card-title {
  font-size: 19px;
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 12px;
}
.card-badges { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 14px; }
.badge {
  font-size: 12.5px;
  font-weight: 500;
  padding: 3px 12px;
  border-radius: 999px;
  white-space: nowrap;
}
.badge-module { background: var(--accent-soft); color: var(--accent); }
.badge-date { background: #f4ece6; color: var(--text-2); }
.badge-wave { background: #f4ece6; color: var(--text-3); }

.card-section { margin-top: 11px; }
.card-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-3);
  margin-bottom: 4px;
}
.card-text {
  font-size: 15.5px;
  color: var(--text);
  white-space: pre-line;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card.expanded .card-text { -webkit-line-clamp: unset; }
.card-toggle {
  background: none; border: none; cursor: pointer;
  color: var(--accent); font-size: 13.5px; font-family: var(--font);
  padding: 6px 0 0;
}
.card-value .card-text { color: var(--text-2); }

.card-thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 16px;
}
.card-thumbs img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  object-position: center top;
  border-radius: 10px;
  border: 1px solid var(--border);
  cursor: zoom-in;
  transition: transform .18s, box-shadow .18s;
}
.card-thumbs img:hover { transform: scale(1.03); box-shadow: var(--shadow-hover); }
/* 宽横幅图：占两格并完整显示（裁切会只剩纯色区域，这类图文字通常靠边） */
.card-thumbs img.thumb-wide {
  grid-column: span 2;
  object-fit: contain;
  object-position: center center;
  background: #f5f2ef;
}
.thumb-more {
  width: 100%;
  height: 150px;
  display: flex; align-items: center; justify-content: center;
  font-size: 13.5px; color: var(--text-2);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  font-family: var(--font);
}

mark { background: #ffe58f; border-radius: 3px; padding: 0 1px; }

/* ── 空态 ── */
.empty-state {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 48px 24px;
  text-align: center;
  color: var(--text-3);
}
.empty-state .empty-icon { font-size: 36px; margin-bottom: 10px; }
.empty-state .empty-title { font-size: 15px; font-weight: 600; color: var(--text-2); margin-bottom: 6px; }
.empty-state .empty-desc { font-size: 13px; }

/* ── Lightbox ── */
.lightbox {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0,0,0,.88);
  display: flex; align-items: center; justify-content: center;
  animation: fadeIn .18s ease;
}
.lightbox[hidden] { display: none; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.lightbox-img {
  max-width: 88vw; max-height: 84vh;
  border-radius: 10px;
  box-shadow: 0 20px 80px rgba(0,0,0,.5);
}
.lightbox-close, .lightbox-prev, .lightbox-next {
  position: fixed;
  background: rgba(255,255,255,.12);
  color: #fff;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  font-size: 22px;
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  transition: background .18s;
}
.lightbox-close:hover, .lightbox-prev:hover, .lightbox-next:hover { background: rgba(255,255,255,.28); }
.lightbox-close { top: 24px; right: 28px; font-size: 26px; }
.lightbox-prev { left: 24px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 24px; top: 50%; transform: translateY(-50%); }
.lightbox-caption {
  position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%);
  color: rgba(255,255,255,.75); font-size: 13px;
}

/* ── 回到顶部（回到视图切换栏） ── */
.back-top {
  position: fixed;
  /* 贴着内容区右边缘（内容区 max-width 1040 居中，按钮宽 46 + 间距 16） */
  right: calc(50% - 520px - 62px);
  bottom: 28px;
  width: 46px; height: 46px;
  border: none;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(232, 93, 31, .4);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity .25s, transform .25s, background .18s;
  z-index: 60;
}
.back-top.show { opacity: 1; transform: none; pointer-events: auto; }
.back-top:hover { background: #d14f16; }
/* 窄屏：内容区占满时退回屏幕右边缘，避免压住内容 */
@media (max-width: 1230px) {
  .back-top { right: 22px; }
}

/* ── 响应式 ── */
@media (max-width: 1080px) {
  .hero-inner { grid-template-columns: 1fr; padding: 48px 28px 100px; gap: 20px; }
  .hero-visual { order: 2; }
  .mascot { width: min(280px, 60vw); }
  .hero { min-height: unset; }
  .hero-stats { gap: 28px; }
}
@media (max-width: 640px) {
  .layout { padding: 18px 14px 56px; }
  .topbar-inner { flex-wrap: wrap; gap: 10px; padding: 12px 16px; }
  .brand-logo-img { height: 24px; }
  .search-box { order: 3; max-width: none; }
  .search-status { display: none; }
  .search-kbd { display: none; }
  .view-count { display: none; }
  .card { padding: 20px; }
  .card-title { font-size: 17px; }
  .card-text { font-size: 14.5px; }
  .card-thumbs { grid-template-columns: repeat(2, 1fr); }
  .card-thumbs img, .thumb-more { height: 110px; }
  .hero-title { min-height: 2.3em; }
  .hero-stats { flex-wrap: wrap; gap: 20px; }
  .stat-num { font-size: 26px; }
}