/* ==========================================================================
   天作之媒 · 主题样式（PC 端）
   参照企业站模板重制：主色 #00b2ab，深色 #00918a，正文 #202020，浅灰 #f5f7f7
   容器 1200px，仅适配 PC（min-width 1280px）
   兼容原有 tt-* 类名，商城与信息平台共用
   ========================================================================== */
:root {
  /*--brand-50: #f1fbfa;*/
  /*--brand-100: #ddf6f4;*/
  /*--brand-200: #b5ebe7;*/
  /*--brand-300: #7bdcd6;*/
  /*--brand-400: #2ec5bd;*/
  /*--brand-500: #00b2ab;*/
  /*--brand-600: #009189;*/
  /*--brand-700: #00726c;*/
  --brand-50: #e7f5ff;
--brand-100: #d0ebff;
--brand-200: #a5d8ff;
--brand-300: #74c0fc;
--brand-400: #4dabf7;
--brand-500: #339af0;
--brand-600: #228be6;
--brand-700: #1c7ed6;
  --ink: #202020;
  --ink-2: #4b4b4b;
  --muted: #8a8a8a;
  --line: #e6e6e6;
  --line-2: #f0f0f0;
  --soft: #f5f7f7;
  --white: #fff;
  --shadow: 0 10px 30px rgba(0, 0, 0, .07);
  --radius: 4px;
  --container: 1200px;
  --sans: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", Arial, sans-serif;
  --serif: var(--sans);

  /* 兼容历史模板中的旧变量名 */
  --pink-50: var(--brand-50);
  --pink-100: var(--brand-100);
  --pink-200: var(--brand-200);
  --pink-300: var(--brand-300);
  --pink-400: var(--brand-400);
  --pink-500: var(--brand-500);
  --pink-600: var(--brand-600);
  --rose-gold: #c9a27e;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-width: 1280px;
  color: var(--ink);
  background: #fff;
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.6;
}
img { max-width: 100%; vertical-align: middle; border: 0; }
a { color: var(--ink-2); text-decoration: none; transition: color .3s; }
a:hover { color: var(--brand-500); }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6, p, dl, dd, figure { margin: 0; font-weight: normal; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; }
em, i { font-style: normal; }

.tt-container { width: var(--container); margin: 0 auto; }
.tt-clearfix::after { content: ""; display: block; clear: both; }

/* ---------- 顶部信息条 ---------- */
.tt-topbar { height: 34px; line-height: 34px; background: var(--brand-500); color: #fff; font-size: 13px; }
.tt-topbar a { color: rgba(255, 255, 255, .92); }
.tt-topbar a:hover { color: #fff; text-decoration: underline; }
.tt-topbar__inner { display: flex; align-items: center; justify-content: space-between; }
.tt-topbar__links { display: flex; align-items: center; gap: 16px; }
.tt-topbar__links b { color: #fff; }
.tt-topbar__sep { width: 1px; height: 12px; background: rgba(255, 255, 255, .45); }

/* ---------- 头部 ---------- */
.tt-header { background: #fff; }
.tt-header__bar { display: flex; align-items: center; gap: 30px; height: 96px; }
.tt-logo { display: flex; align-items: center; flex: 0 0 auto; gap: 14px; }
.tt-logo__mark {
  flex: 0 0 54px;
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--brand-500);
  color: #fff;
  font-size: 26px;
  font-weight: 700;
}
.tt-logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.tt-logo-text b { font-size: 24px; font-weight: 700; letter-spacing: 2px; color: var(--ink); }
.tt-logo-text span { margin-top: 5px; font-size: 11px; letter-spacing: 3px; color: var(--brand-500); }

.tt-search {
  display: flex;
  flex: 0 0 400px;
  width: 400px;
  height: 44px;
  margin-left: auto;
  overflow: hidden;
  border-radius: 22px;
  background: #f5f5f5;
}
.tt-search input {
  flex: 1;
  min-width: 0;
  height: 100%;
  padding: 0 22px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font-size: 14px;
}
.tt-search input::placeholder { color: #a9a9a9; }
.tt-search button {
  width: 100px;
  border: 0;
  background: var(--brand-500);
  color: #fff;
  font-size: 15px;
  letter-spacing: 3px;
}
.tt-search button:hover { background: var(--brand-600); }

.tt-hotline { display: flex; align-items: center; gap: 12px; padding-left: 28px; border-left: 1px solid var(--line); }
.tt-hotline i { flex: 0 0 42px; width: 42px; height: 42px; background: url(../images/tel.jpg) no-repeat center / contain; }
.tt-hotline div { line-height: 1.3; }
.tt-hotline span { display: block; font-size: 13px; color: #a8a8a8; }
.tt-hotline b { display: block; margin-top: 3px; font-size: 23px; font-weight: 700; color: var(--ink); letter-spacing: .5px; }

/* ---------- 主导航 ---------- */
.tt-nav { background: #efefef; border-top: 1px solid #e6e6e6; }
.tt-nav > .tt-container { display: flex; align-items: stretch; }
.tt-nav > .tt-container > ul { display: flex; align-items: stretch; }
.tt-nav > .tt-container > ul > li { position: relative; }
.tt-nav > .tt-container > ul > li > a {
  display: block;
  padding: 0 26px;
  line-height: 52px;
  font-size: 16px;
  color: #131313;
}
.tt-nav > .tt-container > ul > li > a:hover,
.tt-nav > .tt-container > ul > li.is-active > a { background: var(--brand-500); color: #fff; }
.tt-nav__sub {
  position: absolute;
  left: 0;
  top: 100%;
  z-index: 60;
  display: none;
  min-width: 100%;
  background: #efefef;
  box-shadow: 0 12px 22px rgba(0, 0, 0, .1);
}
.tt-nav > .tt-container > ul > li:hover .tt-nav__sub { display: block; }
.tt-nav__sub a {
  display: block;
  padding: 0 20px;
  line-height: 42px;
  font-size: 14px;
  color: #333;
  white-space: nowrap;
  border-top: 1px solid #dedede;
}
.tt-nav__sub a:hover { background: var(--brand-500); color: #fff; }
.tt-nav__right { display: flex; align-items: center; gap: 22px; margin-left: auto; padding-left: 20px; }
.tt-nav__right a { font-size: 14px; color: var(--brand-600); }

/* ---------- 通用按钮 ---------- */
.tt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 30px;
  border: 1px solid var(--brand-500);
  border-radius: 3px;
  background: var(--brand-500);
  color: #fff;
  font-size: 15px;
  line-height: 1;
  white-space: nowrap;
  transition: all .3s;
}
.tt-btn:hover { background: var(--brand-600); border-color: var(--brand-600); color: #fff; }
.tt-btn--ghost { background: #fff; color: var(--brand-600); border-color: var(--brand-300); }
.tt-btn--ghost:hover { background: var(--brand-50); color: var(--brand-600); border-color: var(--brand-500); }
.tt-btn--line { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .75); }
.tt-btn--line:hover { background: #fff; color: var(--brand-600); border-color: #fff; }
.tt-btn--light { background: var(--brand-100); color: var(--brand-600); border-color: var(--brand-100); }
.tt-btn--light:hover { background: var(--brand-200); color: var(--brand-600); }
.tt-btn--sm { height: 34px; padding: 0 16px; font-size: 13px; }
.tt-btn--block { display: flex; width: 100%; }

/* ---------- 首页轮播 ---------- */
.tt-slider { position: relative; height: 470px; overflow: hidden; }
.tt-slider .swiper-slide { position: relative; height: 470px; background-color: #123; background-repeat: no-repeat; background-position: center center; background-size: cover; }
.tt-slide { position: relative; }
.tt-slide__mask { position: absolute; left: 0; top: 0; right: 0; bottom: 0; background: linear-gradient(90deg, rgba(6, 28, 28, .8) 0%, rgba(6, 28, 28, .5) 46%, rgba(6, 28, 28, .02) 80%); }
.tt-slide__inner { position: relative; z-index: 2; display: flex; flex-direction: column; justify-content: center; height: 100%; }
.tt-slide__eyebrow {
  align-self: flex-start;
  padding: 7px 16px;
  border: 1px solid rgba(255, 255, 255, .55);
  border-radius: 2px;
  color: #fff;
  font-size: 12px;
  letter-spacing: 3px;
}
.tt-slide h1 { margin: 20px 0 16px; font-size: 46px; font-weight: 700; line-height: 1.26; letter-spacing: 2px; color: #fff; }
.tt-slide h1 em { color: #86eae4; }
.tt-slide p { max-width: 600px; font-size: 15px; line-height: 1.95; color: rgba(255, 255, 255, .92); }
.tt-slide__btns { display: flex; gap: 14px; margin-top: 30px; }
.tt-slider__dots { position: absolute; left: 0; right: 0; bottom: 26px; z-index: 5; text-align: center; line-height: 0; }
.tt-slider__dots span {
  width: 10px;
  height: 10px;
  margin: 0 5px;
  display: inline-block;
  border-radius: 10px;
  background: #fff;
  opacity: .5;
  cursor: pointer;
  outline: none;
  transition: all .4s;
}
.tt-slider__dots span.swiper-pagination-bullet-active { width: 28px; opacity: 1; }
.tt-slider__prev, .tt-slider__next {
  position: absolute;
  top: 50%;
  z-index: 6;
  width: 46px;
  height: 58px;
  margin-top: -29px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, .3);
  opacity: 0;
  cursor: pointer;
  transition: opacity .4s;
}
.tt-slider:hover .tt-slider__prev, .tt-slider:hover .tt-slider__next { opacity: 1; }
.tt-slider__prev { left: 0; }
.tt-slider__next { right: 0; }
.tt-slider__prev::before, .tt-slider__next::before {
  content: "";
  width: 13px;
  height: 13px;
  border-left: 2px solid #fff;
  border-top: 2px solid #fff;
  transform: rotate(-45deg);
}
.tt-slider__next::before { transform: rotate(135deg); }

/* ---------- 搜索条 ---------- */
.tt-searchbar { background: #fff; border-bottom: 1px solid #eee; }
.tt-searchbar__inner { display: flex; align-items: center; justify-content: space-between; height: 78px; }
.tt-searchbar__hot { font-size: 14px; color: #333; font-weight: 700; }
.tt-searchbar__hot b { margin-right: 8px; color: var(--brand-500); letter-spacing: 1px; }
.tt-searchbar__hot a { padding: 0 10px; color: #787878; font-weight: 400; }
.tt-searchbar__hot a:hover { color: var(--brand-500); }
.tt-searchbar .tt-search { flex: 0 0 400px; margin: 0; }

/* ---------- 区块与标题 ---------- */
.tt-section { padding: 62px 0; }
.tt-section--soft { background: var(--soft); }
.tt-section--grid { background: #f7f8f8 url(../images/product_bg.jpg) center top no-repeat; background-size: cover; }
.tt-section--tight { padding: 34px 0; }
.tt-section__head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 32px; }
.tt-section__title { font-size: 28px; font-weight: 700; line-height: 1.25; letter-spacing: 1px; color: #0a0a0a; }
.tt-section__title small { display: block; margin-top: 6px; font-size: 13px; font-weight: 700; letter-spacing: 3px; color: #b3b3b3; text-transform: uppercase; }
.tt-section__title::after { content: ""; display: block; width: 30px; height: 4px; margin-top: 14px; background: var(--brand-500); }
.tt-section__more { padding-bottom: 4px; font-size: 14px; color: var(--brand-600); }
.tt-section__more:hover { color: var(--brand-700); text-decoration: underline; }

/* ---------- 分类卡片 ---------- */
.tt-cats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.tt-cat {
  position: relative;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 26px 26px 26px 28px;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  transition: all .35s;
}
.tt-cat::after { content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 3px; background: var(--brand-500); transition: width .35s; }
.tt-cat:hover { border-color: var(--brand-300); box-shadow: var(--shadow); }
.tt-cat:hover::after { width: 100%; }
.tt-cat__no { font-size: 34px; font-weight: 700; line-height: 1; color: var(--brand-200); }
.tt-cat__body b { display: block; font-size: 19px; font-weight: 700; color: var(--ink); }
.tt-cat__body span { display: block; margin-top: 4px; font-size: 13px; color: var(--muted); }
.tt-cat__arrow { margin-left: auto; font-size: 20px; color: var(--brand-400); }

/* ---------- 分类侧栏 + 商品区 ---------- */
.tt-shop { display: grid; grid-template-columns: 270px minmax(0, 1fr); gap: 30px; align-items: start; }
.tt-side { background: #fff; border-bottom: 4px solid var(--brand-500); }
.tt-side__head { height: 62px; display: flex; align-items: center; padding: 0 26px; background: var(--brand-500); color: #fff; font-size: 18px; font-weight: 700; letter-spacing: 1px; }
.tt-side ul li { border-bottom: 1px solid #e4e4e4; }
.tt-side ul li:last-child { border-bottom: 0; }
.tt-side ul li a { position: relative; display: block; padding: 0 30px 0 48px; line-height: 60px; font-size: 16px; color: #202020; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.tt-side ul li a::before { content: ""; position: absolute; left: 28px; top: 50%; width: 7px; height: 7px; margin-top: -3px; background: var(--brand-500); }
.tt-side ul li a::after { content: "›"; position: absolute; right: 24px; top: 0; font-size: 18px; color: var(--brand-300); opacity: 0; transition: all .3s; }
.tt-side ul li a:hover { background: var(--brand-50); color: var(--brand-600); }
.tt-side ul li a:hover::after { opacity: 1; right: 20px; }

/* ---------- 商品卡片 ---------- */
.tt-grid-6 { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 20px; }
.tt-grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.tt-grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.tt-grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.tt-product { display: flex; flex-direction: column; height: 100%; overflow: hidden; background: #fff; border: 1px solid #eaeaea; transition: all .35s; }
.tt-product:hover { border-color: var(--brand-500); box-shadow: 0 12px 24px rgba(0, 178, 171, .13); }
.tt-product__img { display: block; aspect-ratio: 4 / 3; overflow: hidden; background: #f7f7f7; }
.tt-product__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.tt-product:hover .tt-product__img img { transform: scale(1.04); }
.tt-product__body { display: flex; flex-direction: column; flex: 1; padding: 14px 16px 16px; }
.tt-product__name { height: 26px; overflow: hidden; font-size: 16px; color: #333; white-space: nowrap; text-overflow: ellipsis; }
.tt-product__name a { color: #333; }
.tt-product__name a:hover { color: var(--brand-600); }
.tt-product__meta { margin-top: 4px; font-size: 12px; color: var(--muted); }
.tt-product__price { margin-top: auto; padding-top: 10px; font-size: 20px; font-weight: 700; color: var(--brand-600); }
.tt-product__price small { font-size: 13px; font-weight: 400; }
.tt-product__price del { margin-left: 8px; font-size: 12px; font-weight: 400; color: #b5b5b5; }
.tt-product__actions { display: flex; gap: 8px; margin-top: 10px; }
.tt-product__actions .tt-btn { flex: 1; height: 34px; padding: 0 8px; font-size: 13px; }

/* 简介商品行 */
.tt-latest { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.tt-mini { display: flex; gap: 14px; padding: 14px; background: #fff; border: 1px solid #eaeaea; transition: all .35s; }
.tt-mini:hover { border-color: var(--brand-500); box-shadow: var(--shadow); }
.tt-mini__img { flex: 0 0 92px; width: 92px; height: 92px; overflow: hidden; background: #f7f7f7; }
.tt-mini__img img { width: 100%; height: 100%; object-fit: cover; }
.tt-mini__body { display: flex; flex-direction: column; min-width: 0; }
.tt-mini__name { overflow: hidden; font-size: 15px; color: var(--ink); white-space: nowrap; text-overflow: ellipsis; }
.tt-mini__name a { color: var(--ink); }
.tt-mini__date { margin-top: 5px; font-size: 12px; color: var(--muted); }
.tt-mini__price { margin-top: auto; font-size: 18px; font-weight: 700; color: var(--brand-600); }

/* ---------- 品牌优势（深色带） ---------- */
.tt-brand { padding: 46px 0 42px; background: var(--brand-600); }
.tt-brand ul { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.tt-brand li { position: relative; padding: 0 14px; text-align: center; }
.tt-brand li + li::before { content: ""; position: absolute; left: 0; top: 14px; bottom: 14px; width: 1px; background: rgba(255, 255, 255, .16); }
.tt-brand .img { width: 63px; height: 57px; margin: 0 auto 16px; transition: transform .8s ease; }
.tt-brand li:hover .img { transform: rotateY(-180deg); }
.tt-brand h3 { margin-bottom: 10px; font-size: 20px; font-weight: 700; color: #fff; }
.tt-brand span { display: block; font-size: 13px; line-height: 1.85; color: #a8d4d1; text-wrap: balance; }

/* ---------- 关于我们 ---------- */
.tt-about { padding: 78px 0 86px; }
.tt-about__grid { display: grid; grid-template-columns: 520px minmax(0, 1fr); gap: 60px; align-items: center; }
.tt-about__txt b { display: block; margin-top: 12px; font-size: 20px; font-weight: 700; color: var(--brand-500); }
.tt-about__txt p { margin-top: 24px; font-size: 15px; line-height: 36px; color: #3c3c3c; text-align: justify; }
.tt-about__more { display: flex; gap: 12px; margin-top: 30px; }
.tt-about__img { height: 430px; overflow: hidden; }
.tt-about__img img { display: block; width: 100%; height: 100%; object-fit: cover; }

/* ---------- 四大优势 ---------- */
.tt-adv { padding: 92px 0; background: #f6f7f7 url(../images/news_bg.jpg) center top no-repeat; background-size: cover; }
.tt-adv__grid { display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 56px; align-items: start; }
.tt-adv__tit h2 { font-size: 34px; font-weight: 700; line-height: 1.35; color: #0a0a0a; }
.tt-adv__tit span { display: block; margin-top: 8px; font-family: Georgia, "Times New Roman", serif; font-size: 24px; font-weight: 700; line-height: 1.35; letter-spacing: 1px; color: #bdbdbd; text-transform: uppercase; }
.tt-adv__tit::after { content: ""; display: block; width: 30px; height: 4px; margin-top: 22px; background: var(--brand-500); }
.tt-adv__list li { position: relative; min-height: 100px; padding: 18px 28px 18px 228px; margin-bottom: 16px; background: #fff; }
.tt-adv__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 214px;
  background: var(--brand-600);
  clip-path: polygon(0 0, 100% 0, 74% 100%, 0 100%);
}
.tt-adv__list h3 { position: absolute; left: 28px; top: 50%; z-index: 2; width: 122px; transform: translateY(-50%); font-size: 17px; font-weight: 700; line-height: 1.5; color: #fff; }
.tt-adv__list p { font-size: 14px; line-height: 30px; color: #5c5c5c; text-align: justify; }

/* ---------- 流程步骤 ---------- */
.tt-steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.tt-step { padding: 30px 24px 28px; text-align: center; background: #fff; border: 1px solid #eaeaea; transition: all .35s; }
.tt-step:hover { border-color: var(--brand-500); box-shadow: var(--shadow); }
.tt-step__no { font-family: Georgia, "Times New Roman", serif; font-size: 34px; line-height: 1; color: var(--brand-200); }
.tt-step h3 { margin-top: 12px; font-size: 17px; font-weight: 700; color: var(--ink); }
.tt-step p { margin-top: 10px; font-size: 13px; line-height: 1.9; color: var(--muted); }

/* ---------- 店铺卡片 ---------- */
.tt-stores { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.tt-store { padding: 28px 20px 24px; text-align: center; background: #fff; border: 1px solid #eaeaea; transition: all .35s; }
.tt-store:hover { border-color: var(--brand-500); box-shadow: var(--shadow); }
.tt-store-avatar {
  overflow: hidden;
  width: 78px;
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  border-radius: 50%;
  background: var(--brand-100);
  color: var(--brand-600);
  font-size: 30px;
  font-weight: 700;
}
.tt-store h3 { margin-top: 16px; font-size: 17px; font-weight: 700; color: var(--ink); overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.tt-store h3 a { color: var(--ink); }
.tt-store .tt-store__tel { margin: 10px 0 16px; font-size: 13px; color: var(--muted); min-height: 30px; display: flex; align-items: center; justify-content: center; }

/* ---------- 友情链接 ---------- */
/* ---------- 页脚 ---------- */
.tt-footer { padding: 48px 0 40px; background: #2b2b2b; }
.tt-footer__grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.3fr); gap: 40px; }
.tt-footer__brandname { display: block; margin-bottom: 14px; font-size: 22px; font-weight: 700; letter-spacing: 2px; color: #fff; }
.tt-footer__brandname span { display: block; margin-top: 5px; font-size: 11px; letter-spacing: 3px; color: var(--brand-500); }
.tt-footer__brand p { max-width: 360px; font-size: 13px; line-height: 1.95; color: #9d9d9d; }
.tt-footer h4 { margin-bottom: 14px; padding-bottom: 10px; font-size: 16px; font-weight: 700; color: #fff; position: relative; }
.tt-footer h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 26px; height: 2px; background: var(--brand-500); }
.tt-footer li { margin: 0; line-height: 2.1; }
.tt-footer li a { font-size: 13px; color: #9d9d9d; }
.tt-footer li a:hover { color: var(--brand-400); }
.tt-footer__contact p { margin: 6px 0; font-size: 13px; color: #9d9d9d; }
.tt-footer__contact b { color: #fff; }
.tt-footer__contact .tt-footer__tel { margin-bottom: 10px; font-size: 24px; font-weight: 700; color: #fff; letter-spacing: .5px; }
.tt-footer__subscribe { display: flex; height: 38px; margin-top: 14px; overflow: hidden; border: 1px solid #444; border-radius: 3px; background: #333; }
.tt-footer__subscribe input { flex: 1; min-width: 0; padding: 0 14px; border: 0; outline: 0; background: transparent; color: #ddd; font-size: 13px; }
.tt-footer__subscribe input::placeholder { color: #777; }
.tt-footer__subscribe button { width: 82px; border: 0; background: var(--brand-500); color: #fff; font-size: 14px; }
.tt-footer__subscribe button:hover { background: var(--brand-600); }
.tt-copyright { background: var(--brand-500); color: #fff; }
.tt-copyright__inner { display: flex; align-items: center; justify-content: space-between; height: 50px; font-size: 13px; }
.tt-copyright a { color: #fff; }
.tt-copyright a:hover { color: #fff; text-decoration: underline; }

/* ---------- 浮动工具条（仅电话与返回顶部） ---------- */
.tt-toolbar { position: fixed; right: 18px; top: 50%; z-index: 100; margin-top: -75px; width: 72px; }
.tt-toolbar__item { position: relative; display: block; width: 72px; height: 72px; margin-top: 3px; border-radius: 4px; background: var(--brand-500); color: #fff; font-size: 13px; line-height: 1.4; text-align: center; transition: background .3s;padding-top:1px; }
.tt-toolbar__item:first-child { margin-top: 0; }
.tt-toolbar__item:hover { background: #333; color: #fff; }
.tt-toolbar__item i { display: block; width: 100%; height: 30px; margin: 10px 0 2px; background: url(../images/toolbar.png) no-repeat center 0; }
.tt-toolbar__item--tel i { background-position: center -30px; }
.tt-toolbar__item--top i { background-position: center -90px; }
.tt-toolbar__item span { display: block; color: #fff; }
.tt-toolbar__box { position: absolute; top: 0; right: 82px; width: 190px; height: 72px; padding-top: 14px; border-radius: 4px; background: var(--brand-500); visibility: hidden; opacity: 0; transition: all .35s; }
.tt-toolbar__box::after { content: ""; position: absolute; top: 50%; right: -14px; margin-top: -7px; border: 7px solid transparent; border-left-color: var(--brand-500); }
.tt-toolbar__box p { font-size: 13px; color: rgba(255, 255, 255, .85); }
.tt-toolbar__box b { display: block; margin-top: 4px; font-size: 17px; color: #fff; }
.tt-toolbar__item:hover .tt-toolbar__box { visibility: visible; opacity: 1; }

/* ---------- 内页头部 ---------- */
.tt-banner { padding: 56px 0 50px; background: #f6f8f8 url(../images/product_bg.jpg) center / cover no-repeat; border-bottom: 1px solid var(--line); }
.tt-banner h1 { font-size: 32px; font-weight: 700; letter-spacing: 1px; color: #0a0a0a; }
.tt-banner h1::after { content: ""; display: block; width: 30px; height: 4px; margin-top: 14px; background: var(--brand-500); }
.tt-crumb { display: flex; align-items: center; gap: 10px; margin-top: 14px; font-size: 13px; color: var(--muted); }
.tt-crumb a { color: var(--muted); }
.tt-crumb a:hover { color: var(--brand-600); }
.tt-crumb span { color: var(--brand-500); }

/* ---------- 页面布局 ---------- */
.tt-page { padding: 44px 0 70px; }
.tt-layout { display: grid; grid-template-columns: 270px minmax(0, 1fr); gap: 30px; align-items: start; }
.tt-layout--right { grid-template-columns: minmax(0, 1fr) 320px; }
.tt-panel { padding: 22px 24px; background: #fff; border: 1px solid var(--line); }
.tt-panel + .tt-panel { margin-top: 20px; }
.tt-panel__title { display: flex; align-items: flex-end; justify-content: space-between; padding-bottom: 14px; margin-bottom: 14px; border-bottom: 1px solid var(--line); font-size: 20px; font-weight: 700; color: var(--ink); }
.tt-panel__title small { font-size: 12px; font-weight: 400; letter-spacing: 2px; color: #b3b3b3; }
.tt-link-list li + li { border-top: 1px dashed var(--line); }
.tt-link-list a { display: flex; align-items: center; justify-content: space-between; padding: 12px 2px; font-size: 15px; color: var(--ink-2); }
.tt-link-list a:hover { color: var(--brand-600); }
.tt-link-list a span { color: var(--brand-400); }
.tt-hot { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px dashed var(--line); }
.tt-hot:last-child { padding-bottom: 0; border-bottom: 0; }
.tt-hot__img { flex: 0 0 68px; width: 68px; height: 68px; overflow: hidden; background: var(--soft); }
.tt-hot__img img { width: 100%; height: 100%; object-fit: cover; }
.tt-hot__body { min-width: 0; }
.tt-hot__name { overflow: hidden; font-size: 14px; color: var(--ink); white-space: nowrap; text-overflow: ellipsis; }
.tt-hot__name a { color: var(--ink); }
.tt-hot__name a:hover { color: var(--brand-600); }
.tt-hot__price { margin-top: 6px; font-size: 15px; font-weight: 700; color: var(--brand-600); }
.tt-hot__date { margin-top: 4px; font-size: 12px; color: var(--muted); }

/* ---------- 商品详情 ---------- */
.tt-detail { display: grid; grid-template-columns: 460px minmax(0, 1fr); gap: 42px; align-items: start; }
.tt-detail__img { aspect-ratio: 1 / 1; overflow: hidden; border: 1px solid var(--line); background: var(--soft); }
.tt-detail__img img { width: 100%; height: 100%; object-fit: cover; }
.tt-detail__title { font-size: 28px; font-weight: 700; line-height: 1.5; color: var(--ink); }
.tt-detail__price { margin: 20px 0; padding: 18px 22px; background: var(--soft); border: 1px solid var(--line); }
.tt-detail__price b { font-size: 32px; color: var(--brand-600); }
.tt-detail__price del { margin-left: 12px; font-size: 14px; color: #b5b5b5; }
.tt-detail__meta { margin: 0 0 22px; }
.tt-detail__meta li { display: flex; gap: 12px; padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: 14px; color: var(--ink-2); }
.tt-detail__meta b { flex: 0 0 76px; font-weight: 400; color: var(--muted); }
.tt-buy { display: flex; align-items: center; gap: 12px; margin-top: 24px; }
.tt-qty { display: flex; height: 44px; overflow: hidden; border: 1px solid var(--line); background: #fff; }
.tt-qty input { width: 72px; border: 0; outline: 0; text-align: center; color: var(--ink); }
.tt-tabs { margin-top: 42px; background: #fff; border: 1px solid var(--line); }
.tt-tabs__head { padding: 0 26px; border-bottom: 1px solid var(--line); }
.tt-tabs__head span { display: inline-block; padding: 16px 0; border-bottom: 2px solid var(--brand-500); color: var(--brand-600); font-size: 16px; font-weight: 700; }
.tt-tabs__body { padding: 26px 28px; }

/* ---------- 富文本 ---------- */
.tt-richtext { font-size: 15px; line-height: 1.95; color: var(--ink-2); word-break: break-word; }
.tt-richtext img { height: auto; margin: 0!important; }
.tt-richtext p { margin: 0 0 12px; }
.tt-richtext h1, .tt-richtext h2, .tt-richtext h3, .tt-richtext h4 { margin: 22px 0 12px; font-weight: 700; line-height: 1.5; color: var(--ink); }
.tt-richtext h1 { font-size: 26px; }
.tt-richtext h2 { font-size: 22px; }
.tt-richtext h3 { font-size: 18px; }
.tt-richtext ul, .tt-richtext ol { margin: 10px 0 14px; padding-left: 24px; list-style: disc; }
.tt-richtext ol { list-style: decimal; }
.tt-richtext li { margin: 4px 0; }
.tt-richtext table { width: 100%; margin: 14px 0; border-collapse: collapse; }
.tt-richtext th, .tt-richtext td { padding: 10px 12px; border: 1px solid var(--line); }
.tt-richtext th { background: var(--soft); }
.tt-richtext a { color: var(--brand-600); text-decoration: underline; }

/* ---------- 信息列表 / 详情 ---------- */
.tt-article-row { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 26px; padding: 22px; background: #fff; border: 1px solid var(--line); transition: all .35s; }
.tt-article-row + .tt-article-row { margin-top: 18px; }
.tt-article-row:hover { border-color: var(--brand-400); box-shadow: var(--shadow); }
.tt-article-row__img { aspect-ratio: 8 / 5; overflow: hidden; background: var(--soft); }
.tt-article-row__img img { width: 100%; height: 100%; object-fit: cover; }
.tt-article-row__body { display: flex; flex-direction: column; min-width: 0; }
.tt-article-row__meta { display: flex; gap: 18px; font-size: 13px; color: var(--muted); }
.tt-article-row__title { margin: 8px 0; font-size: 20px; font-weight: 700; line-height: 1.5; color: var(--ink); }
.tt-article-row__title a { color: var(--ink); }
.tt-article-row__title a:hover { color: var(--brand-600); }
.tt-article-row__desc { display: -webkit-box; overflow: hidden; font-size: 14px; line-height: 1.8; color: var(--ink-2); -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.tt-article-row__more { margin-top: auto; padding-top: 12px; font-size: 14px; color: var(--brand-600); }
.tt-article-row__more:hover { text-decoration: underline; }
.tt-article { padding: 34px 38px; background: #fff; border: 1px solid var(--line); }
.tt-article__title { font-size: 30px; font-weight: 700; line-height: 1.5; letter-spacing: 1px; color: var(--ink); }
.tt-article__meta { display: flex; gap: 22px; margin: 14px 0 24px; padding-bottom: 18px; border-bottom: 1px solid var(--line); font-size: 13px; color: var(--muted); }
.tt-article__body { font-size: 15px; line-height: 2; color: var(--ink-2); word-break: break-word; }
.tt-article__body img { height: auto; margin: 12px auto; }
.tt-article__body p { margin-bottom: 14px; }
.tt-article__contact { display: flex; align-items: center; gap: 12px; margin-top: 26px; padding: 16px 20px; background: var(--soft); border: 1px solid var(--line); font-size: 14px; }
.tt-article__contact b { font-size: 18px; color: var(--brand-600); }

/* ---------- 表单 ---------- */
.tt-form-row { margin-bottom: 18px; }
.tt-form-row > label { display: block; margin-bottom: 7px; font-size: 14px; color: var(--ink-2); }
.tt-form-row > label em { margin-right: 4px; color: var(--brand-600); }
.tt-input, .tt-select, .tt-textarea {
  display: block;
  width: 100%;
  height: 46px;
  padding: 0 15px;
  border: 1px solid var(--line);
  border-radius: 3px;
  outline: 0;
  background: #fff;
  color: var(--ink);
  transition: border-color .3s;
}
.tt-input:focus, .tt-select:focus, .tt-textarea:focus { border-color: var(--brand-400); }
.tt-textarea { height: auto; min-height: 120px; padding: 12px 15px; resize: vertical; line-height: 1.8; }
.tt-help { margin-top: 6px; font-size: 12px; color: var(--muted); }
.tt-radio-row { display: flex; flex-wrap: wrap; gap: 18px; padding-top: 10px; }
.tt-radio { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--ink-2); cursor: pointer; }
.tt-check { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; color: var(--ink-2); }
.tt-check input { margin-top: 4px; }
.tt-form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 24px; }

/* ---------- 登录 / 注册 ---------- */
.tt-auth { padding: 54px 0 74px; background: #f6f8f8 url(../images/product_bg.jpg) center / cover no-repeat; }
.tt-auth__grid { display: grid; grid-template-columns: minmax(0, 1fr) 460px; gap: 70px; align-items: center; }
.tt-auth__intro h1 { font-size: 38px; font-weight: 700; line-height: 1.4; letter-spacing: 2px; color: var(--ink); }
.tt-auth__intro p { max-width: 560px; margin-top: 16px; font-size: 15px; line-height: 1.95; color: var(--ink-2); }
.tt-auth__points { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 30px; }
.tt-auth__point { padding: 16px 18px; background: #fff; border: 1px solid var(--line); }
.tt-auth__point b { display: block; font-size: 15px; color: var(--ink); }
.tt-auth__point span { font-size: 12px; color: var(--muted); }
.tt-auth__card { padding: 34px 36px 36px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); }
.tt-auth__card h2 { font-size: 26px; font-weight: 700; letter-spacing: 1px; color: var(--ink); }
.tt-auth__card > p { margin: 8px 0 24px; font-size: 13px; color: var(--muted); }
.tt-auth__foot { display: flex; align-items: center; justify-content: space-between; margin-top: 18px; font-size: 13px; color: var(--muted); }
.tt-auth__foot a { color: var(--brand-600); }
.tt-captcha { display: flex; gap: 10px; }
.tt-captcha .tt-input { flex: 1; }
.tt-captcha img { width: 120px; height: 46px; border: 1px solid var(--line); cursor: pointer; object-fit: cover; }

/* ---------- 简表 / 列表 ---------- */
.tt-list { overflow: hidden; background: #fff; border: 1px solid var(--line); }
.tt-list__row { display: flex; align-items: center; gap: 18px; padding: 18px 22px; border-bottom: 1px solid var(--line); }
.tt-list__row:last-child { border-bottom: 0; }
.tt-list__row:nth-child(even) { background: #fafbfb; }
.tt-empty { padding: 56px 20px; text-align: center; color: var(--muted); }
.tt-empty p { margin-bottom: 14px; }

/* ---------- 分页 ---------- */
.pagination { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px; margin: 30px 0 0; padding: 0; list-style: none; }
.pagination li { display: block; }
.pagination li a, .pagination li span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-2);
  font-size: 14px;
}
.pagination li a:hover { border-color: var(--brand-400); color: var(--brand-600); }
.pagination li.active span { border-color: var(--brand-500); background: var(--brand-500); color: #fff; }
.pagination li.disabled span { background: var(--soft); color: #c2c2c2; }
.pagination .page-item { margin: 0; }
.pagination .page-link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-2);
  font-size: 14px;
}
.pagination .page-link:hover { border-color: var(--brand-400); color: var(--brand-600); background: var(--brand-50); }
.pagination .page-item.active .page-link { border-color: var(--brand-500); background: var(--brand-500); color: #fff; }
.pagination .page-item.disabled .page-link { border-color: var(--line); background: var(--soft); color: #c2c2c2; }

/* ---------- 小工具 ---------- */
.tt-muted { color: var(--muted); }
.tt-price { color: var(--brand-600); font-weight: 700; }
.tt-tag { display: inline-flex; align-items: center; height: 24px; padding: 0 10px; background: var(--brand-50); color: var(--brand-600); font-size: 12px; }
.tt-mt-20 { margin-top: 20px; }
.tt-mt-30 { margin-top: 30px; }
.tt-mb-20 { margin-bottom: 20px; }
.tt-flex { display: flex; align-items: center; gap: 12px; }
.tt-between { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.tt-center { text-align: center; }
.tt-noimg { display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; background: var(--brand-50); color: var(--brand-400); font-size: 15px; letter-spacing: 2px; }

/* 兼容旧版 hero（部分内页历史标记） */
.tt-hero { padding: 46px 0 40px; background: #f6f8f8 url(../images/product_bg.jpg) center / cover no-repeat; }
.tt-hero__grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 50px; align-items: center; }
.tt-hero__eyebrow { display: inline-block; padding: 6px 14px; border: 1px solid var(--brand-300); background: #fff; color: var(--brand-600); font-size: 12px; letter-spacing: 2px; }
.tt-hero h1 { margin: 14px 0; font-size: 40px; font-weight: 700; line-height: 1.3; letter-spacing: 1px; color: var(--ink); }
.tt-hero h1 em { color: var(--brand-600); }
.tt-hero__desc { max-width: 620px; font-size: 15px; line-height: 1.9; color: var(--ink-2); }
.tt-hero__actions { display: flex; gap: 14px; margin-top: 24px; }
.tt-hero__meta { display: flex; gap: 44px; margin-top: 30px; padding-top: 22px; border-top: 1px solid var(--line); }
.tt-hero__meta b { display: block; font-size: 26px; font-weight: 700; line-height: 1.2; color: var(--brand-600); }
.tt-hero__meta span { font-size: 13px; color: var(--muted); }
.tt-hero__mosaic { display: grid; grid-template-columns: 1.15fr .85fr; grid-template-rows: 1fr 1fr; gap: 12px; height: 300px; }
.tt-hero__tile { position: relative; display: block; overflow: hidden; border: 1px solid var(--line); background: var(--soft); }
.tt-hero__tile:first-child { grid-row: span 2; }
.tt-hero__tile img { width: 100%; height: 100%; object-fit: cover; }
.tt-hero__tile span { position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 16px 12px; background: linear-gradient(transparent, rgba(0, 0, 0, .72)); color: #fff; font-size: 13px; line-height: 1.5; }
.tt-hero__tile em { display: block; overflow: hidden; font-size: 15px; font-weight: 700; white-space: nowrap; text-overflow: ellipsis; }
.tt-services { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; overflow: hidden; background: var(--line); border: 1px solid var(--line); }
.tt-service { display: flex; align-items: center; gap: 14px; padding: 20px 24px; background: #fff; }
.tt-service__icon { flex: 0 0 44px; width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; border-radius: 50%; background: var(--brand-50); color: var(--brand-600); font-size: 19px; }
.tt-service b { display: block; font-size: 15px; color: var(--ink); }
.tt-service span { font-size: 13px; color: var(--muted); }

/* ---------- 信息平台专用 ---------- */
.tt-hero--info { background: #f6f8f8 url(../images/product_bg.jpg) center / cover no-repeat; }
.tt-info-tiles { display: flex; flex-direction: column; gap: 14px; height: 300px; justify-content: center; }
.tt-info-tile { display: flex; align-items: center; gap: 18px; padding: 18px 24px; background: #fff; border: 1px solid var(--line); transition: all .35s; }
.tt-info-tile:hover { border-color: var(--brand-400); box-shadow: var(--shadow); }
.tt-info-tile__no { font-size: 34px; font-weight: 700; line-height: 1; color: var(--brand-200); }
.tt-info-tile__body b { display: block; font-size: 18px; font-weight: 700; color: var(--ink); }
.tt-info-tile__body span { font-size: 12px; letter-spacing: 1px; color: var(--muted); }
.tt-info-tile__arrow { margin-left: auto; font-size: 20px; color: var(--brand-400); }
.tt-info-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.tt-info-card { display: flex; flex-direction: column; height: 100%; overflow: hidden; background: #fff; border: 1px solid #eaeaea; transition: all .35s; }
.tt-info-card:hover { border-color: var(--brand-500); box-shadow: var(--shadow); }
.tt-info-card__img { display: block; aspect-ratio: 16 / 10; overflow: hidden; background: var(--soft); }
.tt-info-card__img img { width: 100%; height: 100%; object-fit: cover; }
.tt-info-card__body { display: flex; flex-direction: column; flex: 1; padding: 14px 16px 16px; }
.tt-info-card__date { font-size: 12px; color: var(--muted); }
.tt-info-card__title { height: 48px; margin-top: 6px; overflow: hidden; font-size: 15px; line-height: 24px; color: var(--ink); }
.tt-info-card__title a { color: var(--ink); }
.tt-info-card__title a:hover { color: var(--brand-600); }
.tt-info-card__more { margin-top: auto; padding-top: 10px; font-size: 13px; color: var(--brand-600); }
.tt-info-bar { display: flex; align-items: center; gap: 20px; padding: 18px 26px; background: var(--brand-50); border: 1px solid var(--brand-100); }
.tt-info-bar b { color: var(--brand-600); }
.tt-info-columns { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.tt-info-col { padding: 0 0 8px; background: #fff; border: 1px solid var(--line); border-bottom: 4px solid var(--brand-500); }
.tt-info-col__head { display: flex; align-items: center; justify-content: space-between; padding: 16px 22px; background: var(--brand-50); border-bottom: 1px solid var(--brand-100); }
.tt-info-col__head h3 { font-size: 19px; font-weight: 700; letter-spacing: 1px; color: var(--ink); }
.tt-info-col__head a { font-size: 13px; color: var(--brand-600); }
.tt-info-col__head a:hover { text-decoration: underline; }
.tt-info-item { display: flex; align-items: center; gap: 14px; margin: 0 22px; padding: 14px 0; border-bottom: 1px dashed var(--line); }
.tt-info-item:last-child { border-bottom: 0; }
.tt-info-item__img { flex: 0 0 96px; width: 96px; height: 68px; overflow: hidden; background: var(--soft); }
.tt-info-item__img img { width: 100%; height: 100%; object-fit: cover; }
.tt-info-item__body { min-width: 0; }
.tt-info-item__title { height: 44px; overflow: hidden; font-size: 14px; line-height: 22px; color: var(--ink); }
.tt-info-item__title a { color: var(--ink); }
.tt-info-item__title a:hover { color: var(--brand-600); }
.tt-info-item__date { margin-top: 4px; font-size: 12px; color: var(--muted); }

/* ---------- 资讯条列（点状列表） ---------- */
.tt-newslist { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 34px; margin-top: 28px; padding-top: 22px; border-top: 1px solid #e2e2e2; }
.tt-newslist li { overflow: hidden; line-height: 46px; white-space: nowrap; text-overflow: ellipsis; }
.tt-newslist li::before { content: ""; display: inline-block; width: 7px; height: 7px; margin-right: 12px; vertical-align: middle; background: var(--brand-500); }
.tt-newslist a { font-size: 15px; color: #333; }
.tt-newslist a:hover { color: var(--brand-600); }

/* ---------- 旧版内页兜底 ---------- */
.tt-legacy { padding: 34px 38px; background: #fff; border: 1px solid var(--line); font-size: 15px; line-height: 2; color: var(--ink-2); }
.tt-legacy img { max-width: 100%; height: auto; }
.tt-legacy table { width: 100%; border-collapse: collapse; }
.tt-legacy th, .tt-legacy td { padding: 10px; border: 1px solid var(--line); }