/* ============================================================
   content.css — 看一看文章 / 商品详情购物车 / 视频号 / 帮助中心 / 我的收藏
   严格对齐 base.css 设计令牌：#07C160 / #95EC69 / #EDEDED
   ============================================================ */

/* ===================== 文章详情 ===================== */
.art-scroll {
  flex: 1; overflow-y: auto; background: #fff; padding-bottom: 8px;
  -webkit-overflow-scrolling: touch;
}
.art-head {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 16px 6px;
}
.art-head-meta { flex: 1; min-width: 0; }
.art-author { font-size: 15px; font-weight: 600; color: var(--wx-text-main); }
.art-sub { font-size: 12px; color: var(--wx-text-sub); margin-top: 2px; }
.art-follow {
  flex: none; padding: 5px 14px; border-radius: 14px;
  background: var(--wx-green); color: #fff; font-size: 13px; line-height: 1.2;
}
.art-follow.done { background: #E5E5E5; color: var(--wx-text-sub); }
.art-title {
  font-size: 22px; font-weight: 700; line-height: 1.35;
  padding: 8px 16px 4px; color: var(--wx-text-main);
}
.art-summary {
  font-size: 14px; color: var(--wx-text-sub); line-height: 1.6;
  padding: 4px 16px 12px; border-bottom: 8px solid #F5F5F5;
}
.art-cover {
  width: 100%; max-height: 260px; object-fit: cover; background: #eee;
}
.art-p {
  font-size: 16px; line-height: 1.85; color: var(--wx-text);
  padding: 12px 16px 0; text-align: justify;
}
.art-meta {
  display: flex; gap: 16px; padding: 18px 16px 6px;
  font-size: 13px; color: var(--wx-text-sub);
  border-bottom: 8px solid #F5F5F5;
}
.art-cmt-block { padding: 8px 16px 4px; }
.art-cmt-title {
  font-size: 15px; font-weight: 600; color: var(--wx-text-main);
  padding: 8px 0 12px;
}
.art-cmt {
  display: flex; gap: 10px; padding: 10px 0;
  border-bottom: .5px solid var(--wx-line-soft);
}
.art-cmt-body { flex: 1; min-width: 0; }
.art-cmt-user { font-size: 13px; color: var(--wx-text-sub); }
.art-cmt-text { font-size: 15px; color: var(--wx-text-main); margin-top: 3px; line-height: 1.5; }
.art-cmt-time { font-size: 12px; color: var(--wx-text-faint); flex: none; align-self: flex-start; }
.art-cmt-empty { text-align: center; color: var(--wx-text-faint); padding: 24px 0; font-size: 14px; }
.art-rel { padding: 8px 16px 4px; }
.art-rel-title {
  font-size: 15px; font-weight: 600; padding: 12px 0 8px;
  border-top: 8px solid #F5F5F5;
}
.art-rel-item {
  padding: 12px 0; border-bottom: .5px solid var(--wx-line-soft); cursor: pointer;
}
.art-rel-item:active { background: #F2F2F2; }
.art-rel-t { font-size: 15px; color: var(--wx-text-main); line-height: 1.4; }
.art-rel-s { font-size: 12px; color: var(--wx-text-sub); margin-top: 4px; }
.art-foot-space { height: 12px; }

/* 文章底部操作栏 */
.art-bar {
  flex: none; display: flex; align-items: center; gap: 10px;
  padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
  background: #fff; border-top: .5px solid var(--wx-line);
}
.art-bar-like {
  flex: none; display: flex; flex-direction: column; align-items: center;
  font-size: 11px; color: var(--wx-text-sub); min-width: 40px;
}
.art-bar-like.on { color: #FA5151; }
.art-bar-input {
  flex: 1; background: #F2F2F2; border-radius: 18px;
  padding: 8px 14px; font-size: 14px;
}
.art-bar-send {
  flex: none; background: var(--wx-green); color: #fff;
  padding: 8px 14px; border-radius: 16px; font-size: 14px;
}
.art-bar-fav { flex: none; min-width: 40px; text-align: center; }

/* ===================== 商品详情 / 购物车 ===================== */
.shop-scroll {
  flex: 1; overflow-y: auto; background: #F5F5F5;
  -webkit-overflow-scrolling: touch;
}
.shop-cart-badge {
  position: absolute; top: -6px; right: -10px;
  min-width: 16px; height: 16px; padding: 0 4px; border-radius: 8px;
  background: var(--wx-red); color: #fff; font-size: 11px; line-height: 16px;
  text-align: center;
}
.shop-hero { background: #fff; }
.shop-hero img { width: 100%; max-height: 320px; object-fit: cover; }
.shop-price-box { background: #fff; padding: 14px 16px; }
.shop-price-row { display: flex; align-items: baseline; gap: 12px; }
.shop-price { font-size: 26px; color: #FA5151; font-weight: 700; }
.shop-price::before { content: '¥'; font-size: 15px; margin-right: 1px; }
.shop-origin { font-size: 12px; color: var(--wx-text-sub); }
.shop-name { font-size: 17px; font-weight: 600; margin-top: 8px; line-height: 1.4; }
.shop-spec-row {
  background: #fff; margin-top: 8px; padding: 12px 16px;
}
.shop-spec-row + .shop-spec-row { border-top: .5px solid var(--wx-line-soft); }
.shop-spec-name { font-size: 14px; color: var(--wx-text-sub); margin-bottom: 10px; }
.shop-spec-chips { display: flex; flex-wrap: wrap; gap: 10px; }
.shop-spec-chip {
  padding: 6px 14px; border-radius: 4px; background: #F2F2F2;
  font-size: 14px; color: var(--wx-text-main); cursor: pointer;
}
.shop-spec-chip.on { background: rgba(7, 193, 96, .12); color: var(--wx-green); font-weight: 600; }
.shop-qty-row {
  background: #fff; margin-top: 8px; padding: 12px 16px;
  display: flex; align-items: center; justify-content: space-between;
}
.shop-stepper { display: flex; align-items: center; gap: 0; border: .5px solid var(--wx-line); border-radius: 4px; }
.shop-stepper button {
  width: 32px; height: 30px; font-size: 16px; color: var(--wx-text-main); background: #fff;
}
.shop-stepper button:active { background: #F2F2F2; }
.shop-qty-num { min-width: 40px; text-align: center; font-size: 15px; }
.shop-desc { background: #fff; margin-top: 8px; padding: 14px 16px; }
.shop-block-title { font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.shop-desc p { font-size: 14px; color: var(--wx-text); line-height: 1.7; }
.shop-reviews { background: #fff; margin-top: 8px; padding: 14px 16px; }
.shop-review { padding: 10px 0; border-top: .5px solid var(--wx-line-soft); }
.shop-review:first-of-type { border-top: none; }
.shop-review-head { display: flex; justify-content: space-between; align-items: center; }
.shop-review-user { font-size: 13px; color: var(--wx-text-sub); }
.shop-review-star { color: #F7B500; font-size: 13px; letter-spacing: 1px; }
.shop-review-text { font-size: 14px; color: var(--wx-text); margin-top: 6px; line-height: 1.6; }
.shop-foot-space { height: 12px; }

/* 商品底部操作栏 */
.shop-bar {
  flex: none; display: flex; align-items: center; gap: 12px;
  padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
  background: #fff; border-top: .5px solid var(--wx-line);
}
.shop-bar-icon { flex: none; text-align: center; font-size: 11px; color: var(--wx-text-sub); }
.shop-bar-add {
  flex: 1; padding: 11px 0; border-radius: 20px;
  background: #FF9D2C; color: #fff; font-size: 15px;
}
.shop-bar-buy {
  flex: 1; padding: 11px 0; border-radius: 20px;
  background: var(--wx-green); color: #fff; font-size: 15px;
}
.shop-bar-add:active { background: #F08A15; }
.shop-bar-buy:active { background: var(--wx-green-dark); }

/* 购物车弹层 */
.cart-mask { position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 920; }
.cart-sheet {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 921;
  background: #fff; border-radius: 14px 14px 0 0;
  max-height: 78%; display: flex; flex-direction: column;
  animation: wxSheetUp .25s ease;
}
.cart-head {
  display: flex; align-items: center; padding: 14px 16px;
  border-bottom: .5px solid var(--wx-line-soft);
}
.cart-title { flex: 1; font-size: 16px; font-weight: 600; }
.cart-clear { font-size: 13px; color: var(--wx-text-sub); margin-right: 16px; }
.cart-close { font-size: 18px; color: var(--wx-text-sub); }
.cart-body { flex: 1; overflow-y: auto; padding: 4px 16px; }
.cart-item {
  display: flex; align-items: center; gap: 12px; padding: 12px 0;
  border-bottom: .5px solid var(--wx-line-soft);
}
.cart-item img {
  width: 60px; height: 60px; border-radius: 6px; object-fit: cover;
  background: #eee; flex: none;
}
.cart-item-meta { flex: 1; min-width: 0; }
.cart-item-name { font-size: 14px; line-height: 1.3; }
.cart-item-spec { font-size: 12px; color: var(--wx-text-sub); margin-top: 3px; }
.cart-item-price { font-size: 15px; color: #FA5151; font-weight: 600; margin-top: 4px; }
.cart-item-stepper { display: flex; align-items: center; border: .5px solid var(--wx-line); border-radius: 4px; }
.cart-item-stepper button { width: 26px; height: 26px; font-size: 14px; }
.cart-item-stepper span { min-width: 32px; text-align: center; font-size: 14px; }
.cart-item-del { font-size: 12px; color: var(--wx-red); flex: none; padding: 6px; }
.cart-foot {
  display: flex; align-items: center; padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  border-top: .5px solid var(--wx-line-soft);
}
.cart-total { flex: 1; font-size: 14px; color: var(--wx-text-sub); }
.cart-total b { color: #FA5151; font-size: 18px; }
.cart-checkout {
  padding: 10px 28px; border-radius: 20px;
  background: var(--wx-green); color: #fff; font-size: 15px;
}
.cart-checkout:active { background: var(--wx-green-dark); }

/* ===================== 视频号全屏 feed ===================== */
.vf-nav {
  position: absolute; top: 0; left: 0; right: 0; z-index: 20;
  display: flex; align-items: center; padding: calc(10px + env(safe-area-inset-top)) 14px 10px;
  color: #fff; text-shadow: 0 1px 4px rgba(0,0,0,.4);
}
.vf-back { font-size: 26px; flex: none; width: 30px; }
.vf-tabs { flex: 1; display: flex; justify-content: center; gap: 22px; font-size: 16px; }
.vf-tabs span { opacity: .7; }
.vf-tabs span.on { opacity: 1; font-weight: 700; border-bottom: 2px solid #fff; padding-bottom: 2px; }
.vf-search { flex: none; font-size: 18px; }
.vf-pager {
  flex: 1; overflow-y: scroll; scroll-snap-type: y mandatory;
  -webkit-overflow-scrolling: touch;
}
.vf-slide {
  position: relative; width: 100%; height: 100%;
  scroll-snap-align: start; scroll-snap-stop: always;
  overflow: hidden; background: #000;
}
.vf-bg {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover;
}
.vf-shade {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,.35) 0%, rgba(0,0,0,0) 28%, rgba(0,0,0,0) 55%, rgba(0,0,0,.65) 100%);
}
/* 双击红心弹出动画 */
.vf-heart-pop {
  position: absolute; left: 50%; top: 45%;
  width: 90px; height: 90px; margin: -45px 0 0 -45px;
  background: no-repeat center/contain;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23FA5151'><path d='M12 21s-7.5-4.9-10-9.3C.4 8.6 2.3 5 5.7 5c2 0 3.4 1.1 4.3 2.3h4c.9-1.2 2.3-2.3 4.3-2.3 3.4 0 5.3 3.6 3.7 6.7C19.5 16.1 12 21 12 21z'/></svg>");
  opacity: 0; pointer-events: none; transform: scale(.6);
}
.vf-heart-pop.pop { animation: vfHeart .8s ease; }
@keyframes vfHeart {
  0% { opacity: 0; transform: scale(.5); }
  30% { opacity: 1; transform: scale(1.1); }
  60% { opacity: 1; transform: scale(1); }
  100% { opacity: 0; transform: scale(1.2) translateY(-10px); }
}
/* 右侧操作栏 */
.vf-rail {
  position: absolute; right: 10px; bottom: 110px; z-index: 10;
  display: flex; flex-direction: column; align-items: center; gap: 20px;
  color: #fff;
}
.vf-rail-avatar { position: relative; width: 46px; height: 46px; }
.vf-rail-avatar img {
  width: 46px; height: 46px; border-radius: 50%; border: 2px solid #fff; object-fit: cover;
}
.vf-follow {
  position: absolute; left: 50%; bottom: -9px; transform: translateX(-50%);
  width: 18px; height: 18px; border-radius: 50%;
  background: #FA5151; color: #fff; font-size: 14px; line-height: 16px; text-align: center;
}
.vf-act { display: flex; flex-direction: column; align-items: center; gap: 3px; font-size: 12px; }
.vf-act.on svg { filter: drop-shadow(0 0 2px rgba(250,69,69,.6)); }
/* 底部信息 */
.vf-info {
  position: absolute; left: 14px; right: 90px; bottom: 28px; z-index: 10; color: #fff;
}
.vf-author { font-size: 16px; font-weight: 700; }
.vf-title { font-size: 15px; margin-top: 6px; line-height: 1.4; }
.vf-meta { font-size: 12px; opacity: .8; margin-top: 6px; }
/* 评论抽屉 */
.vf-cmt-mask { position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 930; }
.vf-cmt-sheet {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 931;
  background: #fff; border-radius: 14px 14px 0 0;
  max-height: 66%; display: flex; flex-direction: column;
  animation: wxSheetUp .25s ease;
}
.vf-cmt-head {
  padding: 14px 16px; font-size: 15px; font-weight: 600;
  border-bottom: .5px solid var(--wx-line-soft); text-align: center; position: relative;
}
.vf-cmt-head span[data-act=close] {
  position: absolute; right: 16px; top: 12px; font-size: 18px; color: var(--wx-text-sub); font-weight: 400;
}
.vf-cmt-list { flex: 1; overflow-y: auto; padding: 8px 16px; }
.vf-cmt-row { display: flex; gap: 10px; padding: 10px 0; }
.vf-cmt-row img { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; flex: none; }
.vf-cmt-user { font-size: 13px; color: var(--wx-text-sub); }
.vf-cmt-text { font-size: 15px; margin-top: 3px; line-height: 1.5; }
.vf-cmt-inputbar {
  display: flex; gap: 10px; padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
  border-top: .5px solid var(--wx-line-soft);
}
.vf-cmt-inputbar input { flex: 1; background: #F2F2F2; border-radius: 18px; padding: 9px 14px; font-size: 14px; }
.vf-cmt-inputbar button { background: var(--wx-green); color: #fff; padding: 0 18px; border-radius: 18px; font-size: 14px; }

/* ===================== 帮助中心 ===================== */
.hc-search { flex: none; background: #fff; padding: 10px 14px; }
.hc-search input {
  width: 100%; background: #F2F2F2; border-radius: 8px;
  padding: 9px 14px; font-size: 15px;
}
.hc-cats {
  flex: none; display: flex; gap: 8px; overflow-x: auto;
  padding: 10px 14px; background: #fff;
  border-top: .5px solid var(--wx-line-soft);
}
.hc-cat {
  flex: none; padding: 5px 12px; border-radius: 14px;
  background: #F2F2F2; font-size: 13px; color: var(--wx-text-sub); cursor: pointer;
}
.hc-cat.on { background: var(--wx-green); color: #fff; }
.hc-list { flex: 1; overflow-y: auto; padding-bottom: 8px; }
.hc-group { margin-top: 10px; }
.hc-group-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 16px; font-size: 14px; font-weight: 600; color: var(--wx-text-main);
}
.hc-cnt { font-size: 12px; color: var(--wx-text-sub); font-weight: 400; }
.hc-q { background: #fff; border-top: .5px solid var(--wx-line-soft); }
.hc-q:first-of-type { border-top: none; }
.hc-q-title {
  display: flex; align-items: center; gap: 8px; padding: 13px 16px; cursor: pointer;
}
.hc-q-title:active { background: #F5F5F5; }
.hc-q-mark {
  flex: none; width: 20px; height: 20px; border-radius: 4px;
  background: rgba(7,193,96,.12); color: var(--wx-green);
  font-size: 12px; text-align: center; line-height: 20px; font-weight: 700;
}
.hc-q-text { flex: 1; font-size: 15px; color: var(--wx-text-main); }
.hc-q-arrow { flex: none; color: var(--wx-text-sub); font-size: 18px; }
.hc-a {
  display: none; padding: 0 16px 14px 44px;
  font-size: 14px; color: var(--wx-text-sub); line-height: 1.7;
}
.hc-a.open { display: flex; gap: 8px; }
.hc-a .hc-q-mark { background: rgba(250,81,81,.1); color: var(--wx-red); }
.hc-foot {
  flex: none; background: #fff; padding: 12px 16px calc(16px + env(safe-area-inset-bottom));
  border-top: .5px solid var(--wx-line-soft);
}
.hc-foot-tip { text-align: center; font-size: 13px; color: var(--wx-text-sub); margin-bottom: 10px; }
/* 反馈弹层 */
.hc-fb-mask { position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 940; }
.hc-fb-box {
  position: fixed; left: 50%; top: 50%; transform: translate(-50%,-50%);
  width: 86%; max-width: 340px; background: #fff; border-radius: 14px; z-index: 941;
  padding: 18px; animation: wxPop .2s;
}
.hc-fb-title { font-size: 16px; font-weight: 600; text-align: center; margin-bottom: 14px; }
.hc-fb-ta {
  width: 100%; height: 110px; background: #F5F5F5; border-radius: 8px;
  padding: 10px; font-size: 14px; resize: none; line-height: 1.5;
}
.hc-fb-input {
  width: 100%; margin-top: 10px; background: #F5F5F5; border-radius: 8px;
  padding: 10px; font-size: 14px;
}
.hc-fb-actions { display: flex; gap: 10px; margin-top: 14px; }
.hc-fb-cancel {
  flex: 1; padding: 10px 0; border-radius: 6px; background: #F2F2F2; font-size: 15px;
}
.hc-fb-submit { flex: 1; padding: 10px 0; border-radius: 6px; background: var(--wx-green); color: #fff; font-size: 15px; }

/* ===================== 我的收藏 ===================== */
.fv-tabs {
  flex: none; display: flex; background: #fff;
  border-bottom: .5px solid var(--wx-line-soft);
}
.fv-tab {
  flex: 1; text-align: center; padding: 12px 0; font-size: 15px;
  color: var(--wx-text-sub);
}
.fv-tab.on { color: var(--wx-text-main); font-weight: 600; border-bottom: 2px solid var(--wx-green); }
.fv-list { flex: 1; overflow-y: auto; padding: 8px 0; }
.fv-item {
  display: flex; align-items: center; gap: 12px;
  background: #fff; margin-bottom: 8px; padding: 12px 14px; cursor: pointer;
}
.fv-item:active { background: #F5F5F5; }
.fv-item.sel { background: rgba(7,193,96,.08); }
.fv-check {
  flex: none; width: 22px; height: 22px; border-radius: 50%;
  border: 1.5px solid #C7C7CC; color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 13px;
}
.fv-check.on { background: var(--wx-green); border-color: var(--wx-green); }
.fv-sel-bar {
  flex: none; display: flex; align-items: center;
  padding: 10px 16px calc(12px + env(safe-area-inset-bottom));
  background: #fff; border-top: .5px solid var(--wx-line);
}
.fv-sel-info { flex: 1; font-size: 14px; color: var(--wx-text-sub); }
.fv-sel-all { padding: 8px 16px; border-radius: 16px; background: #F2F2F2; color: var(--wx-text-main); font-size: 14px; margin-right: 10px; }
.fv-sel-del { padding: 8px 20px; border-radius: 16px; background: var(--wx-red); color: #fff; font-size: 14px; }
.fv-thumb {
  width: 64px; height: 64px; border-radius: 6px; object-fit: cover;
  background: #eee; flex: none;
}
.fv-thumb-none {
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; color: #fff; background: var(--wx-green);
}
.fv-meta { flex: 1; min-width: 0; }
.fv-cat {
  display: inline-block; font-size: 11px; color: var(--wx-green);
  background: rgba(7,193,96,.1); padding: 1px 6px; border-radius: 3px;
}
.fv-title {
  font-size: 15px; margin-top: 5px; line-height: 1.35;
  overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}
.fv-snippet {
  font-size: 12px; color: var(--wx-text-sub); margin-top: 4px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.fv-time { font-size: 11px; color: var(--wx-text-faint); margin-top: 4px; }
.fv-del { flex: none; font-size: 13px; color: var(--wx-red); padding: 6px; }

/* ===================== 新功能补充样式 ===================== */

/* 文章：阅读进度条 */
.art-progress {
  position: absolute; left: 0; top: 44px; height: 2px; width: 0;
  background: var(--wx-green); z-index: 5; transition: width .1s linear;
}
/* 文章：夜间模式 */
.art-night .art-scroll { background: #141414; }
.art-night .art-title, .art-night .art-author { color: #f2f2f2; }
.art-night .art-p { color: #cfcfcf; }
.art-night .art-summary, .art-night .art-sub { color: #888; }
.art-night .art-bar { background: #1c1c1c; border-top-color: #333; }
.art-night .art-bar-like { color: #999; }
/* 文章：作者卡片 */
.art-author-card {
  display: flex; align-items: center; gap: 10px;
  margin: 12px 16px 4px; padding: 10px 12px;
  background: #F7F7F7; border-radius: 8px;
}
.art-author-card img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; }
.art-author-meta { flex: 1; }
.art-author-name { font-size: 14px; font-weight: 600; }
.art-author-desc { font-size: 12px; color: var(--wx-text-sub); margin-top: 2px; }

/* 商品：参数表 */
.shop-params { background: #fff; margin-top: 8px; padding: 14px 16px; }
.shop-param-row {
  display: flex; justify-content: space-between;
  padding: 7px 0; border-top: .5px solid var(--wx-line-soft);
  font-size: 14px;
}
.shop-param-row:first-of-type { border-top: none; }
.shop-param-k { color: var(--wx-text-sub); }
.shop-param-v { color: var(--wx-text-main); }
/* 商品：物流保障 */
.shop-ship { background: #fff; margin-top: 8px; padding: 14px 16px; }
.shop-ship-line { font-size: 13px; color: var(--wx-text-sub); line-height: 1.9; }
/* 商品：看了又看 */
.shop-more { background: #fff; margin-top: 8px; padding: 14px 16px; }
.shop-more-card {
  display: inline-block; width: 46%; margin: 4px 2%;
  vertical-align: top; cursor: pointer;
}
.shop-more-card img { width: 100%; height: 100px; object-fit: cover; border-radius: 6px; }
.shop-more-name {
  font-size: 13px; margin-top: 6px; line-height: 1.3;
  overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}
.shop-more-price { font-size: 15px; color: #FA5151; font-weight: 600; margin-top: 4px; }

/* 视频号：总进度条 + 计数 + 上下切换 */
.vf-progress-wrap {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 15;
  padding: 0 14px calc(6px + env(safe-area-inset-bottom));
  color: #fff;
}
.vf-progress { height: 2px; background: rgba(255,255,255,.25); border-radius: 1px; }
.vf-progress-inner { height: 2px; width: 0; background: #fff; border-radius: 1px; }
.vf-count { text-align: center; font-size: 12px; margin-top: 4px; opacity: .85; }
.vf-side-nav {
  position: absolute; right: 10px; bottom: 200px; z-index: 15;
  display: flex; flex-direction: column; gap: 10px;
}
.vf-side-btn {
  width: 34px; height: 34px; border-radius: 50%;
  background: rgba(0,0,0,.3); color: #fff; font-size: 13px;
  display: flex; align-items: center; justify-content: center;
}
.vf-side-btn:active { background: rgba(0,0,0,.55); }

/* 帮助中心：热门问题 + 联系客服 */
.hc-hot { background: #fff; padding: 10px 14px; }
.hc-hot-title { font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.hc-hot-chip {
  display: inline-block; margin: 0 8px 8px 0;
  padding: 6px 12px; background: #F2F2F2; border-radius: 14px;
  font-size: 13px; color: var(--wx-text-main); cursor: pointer;
}
.hc-hot-chip:active { background: #E5E5E5; }
.hc-contact {
  display: flex; align-items: center; background: #fff;
  margin-top: 10px; padding: 14px 16px;
}
.hc-contact-left { flex: 1; }
.hc-contact-title { font-size: 15px; font-weight: 600; }
.hc-contact-sub { font-size: 12px; color: var(--wx-text-sub); margin-top: 4px; }
.hc-contact-btn {
  padding: 7px 18px; border-radius: 16px;
  background: var(--wx-green); color: #fff; font-size: 14px;
}
/* 帮助中心：反馈分类 */
.hc-fb-cats { display: flex; gap: 8px; margin-bottom: 10px; }
.hc-fb-cat {
  flex: 1; text-align: center; padding: 7px 0;
  background: #F2F2F2; border-radius: 6px; font-size: 13px; color: var(--wx-text-sub);
}
.hc-fb-cat.on { background: rgba(7,193,96,.12); color: var(--wx-green); font-weight: 600; }

/* 收藏：统计 + 搜索 + 清空 */
.fv-stats {
  display: flex; gap: 14px; background: #fff;
  padding: 10px 16px; font-size: 13px; color: var(--wx-text-sub);
}
.fv-stat-item b { color: var(--wx-green); }
.fv-search { flex: none; background: #fff; padding: 0 14px 10px; }
.fv-search input {
  width: 100%; background: #F2F2F2; border-radius: 8px;
  padding: 8px 12px; font-size: 14px;
}
.fv-clear {
  margin: 10px 16px 20px; padding: 11px 0;
  background: #fff; color: var(--wx-red);
  border-radius: 8px; text-align: center; font-size: 15px;
}
.fv-clear:active { background: #F5F5F5; }

/* 帮助中心：历史反馈 */
.hc-hist { background: #fff; margin-top: 10px; padding: 12px 16px; }
.hc-hist-title { font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.hc-hist-item {
  padding: 8px 0; border-top: .5px solid var(--wx-line-soft);
}
.hc-hist-item:first-of-type { border-top: none; }
.hc-hist-cat { font-size: 12px; color: var(--wx-green); }
.hc-hist-text { font-size: 14px; color: var(--wx-text); margin-top: 4px; line-height: 1.5; }

/* 帮助中心：自助 tips */
.hc-tips {
  display: flex; gap: 8px; overflow-x: auto;
  background: #fff; padding: 10px 14px;
}
.hc-tip {
  flex: none; display: flex; align-items: center; gap: 6px;
  background: #F2F7F2; border-radius: 8px; padding: 7px 10px;
  font-size: 12px; color: var(--wx-text-main);
}
.hc-tip-icon { font-size: 15px; }
.hc-gname { font-weight: 600; }
.hc-group-desc { font-size: 12px; color: var(--wx-text-faint); flex: 1; padding: 0 10px; }

/* 视频号：右侧按钮组 */
.vf-right { display: flex; align-items: center; gap: 14px; font-size: 18px; }

/* 帮助中心：分类快捷导航 */
.hc-catnav { background: #fff; padding: 10px 14px; }
.hc-catnav-cell {
  padding: 10px 0; border-top: .5px solid var(--wx-line-soft); cursor: pointer;
}
.hc-catnav-cell:first-of-type { border-top: none; }
.hc-catnav-name { font-size: 15px; font-weight: 600; }
.hc-catnav-desc { font-size: 12px; color: var(--wx-text-sub); margin-top: 3px; }

/* 收藏：引导卡 */
.fv-guide {
  background: #fff; margin: 10px 16px 0; padding: 14px 16px;
  border-radius: 8px;
}
.fv-guide-title { font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.fv-guide-line { font-size: 13px; color: var(--wx-text-sub); line-height: 1.9; }

/* 文章：表情快捷条 */
.art-emoji-bar {
  flex: none; display: flex; gap: 4px; overflow-x: auto;
  background: #fff; border-top: .5px solid var(--wx-line);
  padding: 6px 10px;
}
.art-emoji-bar span {
  flex: none; font-size: 22px; padding: 4px 6px; cursor: pointer;
}

/* 文章：分享浮层 */
.art-share-mask { position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 950; }
.art-share-box {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 951;
  background: #fff; border-radius: 14px 14px 0 0; padding: 16px;
  animation: wxSheetUp .25s ease;
}
.art-share-title { font-size: 15px; font-weight: 600; text-align: center; margin-bottom: 14px; }
.art-share-grid { display: flex; justify-content: space-around; margin-bottom: 16px; }
.art-share-item {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  font-size: 26px; cursor: pointer;
}
.art-share-item span { font-size: 12px; color: var(--wx-text-sub); }
.art-share-preview {
  display: flex; gap: 10px; background: #F7F7F7; border-radius: 8px; padding: 10px;
}
.art-share-preview img { width: 60px; height: 60px; border-radius: 6px; object-fit: cover; }
.art-share-pv-t { font-size: 14px; line-height: 1.4; }
.art-share-pv-s { font-size: 12px; color: var(--wx-text-sub); margin-top: 4px; }
.art-share-cancel {
  margin-top: 14px; text-align: center; padding: 11px 0;
  background: #F2F2F2; border-radius: 8px; font-size: 15px;
}