/* =========================================================
   SH0730 · 白底浅橙设计系统 (theme.css)
   作者：WorkBuddy   基于 Ardot 设计稿 704760922762700
   说明：所有新组件使用 .sh- 前缀，避免与旧 about.css/page.css 冲突。
         head.html 会在 body 内引入本文件，内页自动继承头尾样式。
   ========================================================= */

:root {
  --white:      #FFFFFF;
  --cream:      #F7F2EC;   /* 浅暖分区底色 */
  --footer-bg:  #FBF7F3;
  --orange:     #EF7A2C;   /* 主橙 */
  --orange-deep:#D85F0E;   /* 深橙 */
  --orange-soft:#FFF1E6;   /* 浅橙/芯片底 */
  --orange-line:#F0D9C4;
  --ink:        #1E2128;   /* 主文字 */
  --gray:       #6B7280;   /* 次文字 */
  --gray-2:     #9AA0A6;   /* 弱文字 */
  --line:       #ECE0D4;   /* 发丝线 */
  --shadow-sm:  0 6px 16px rgba(239,122,44,.08);
  --shadow:     0 14px 34px rgba(239,122,44,.14);
  --radius:     18px;
  --radius-sm:  12px;
  --maxw:       1200px;
  --font: "Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

/* ---------- 轻量全局重置（仅补充，不破坏旧页布局） ---------- */
.sh-reset, .sh-reset * { box-sizing: border-box; }
body { font-family: var(--font); color: var(--ink); -webkit-font-smoothing: antialiased; }

.sh-container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.sh-section { padding: 84px 0; position: relative; }
.sh-section--cream { background: var(--cream); }
.sh-section--white { background: var(--white); }

/* ---------- 按钮 ---------- */
.sh-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 30px; border-radius: 999px; font-weight: 600; font-size: 16px;
  cursor: pointer; border: 1px solid transparent; transition: .25s ease; text-decoration: none; line-height: 1;
}
.sh-btn--primary {
  background: linear-gradient(135deg, var(--orange), var(--orange-deep));
  color: #fff; box-shadow: 0 10px 24px rgba(239,122,44,.28);
}
.sh-btn--primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(239,122,44,.34); }
.sh-btn--ghost { background: #fff; color: var(--orange-deep); border-color: var(--orange-line); }
.sh-btn--ghost:hover { background: var(--orange-soft); }
.sh-btn--sm { padding: 10px 20px; font-size: 14px; }

/* ---------- 通用区块标题 ---------- */
.sh-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: .12em; color: var(--orange-deep);
  text-transform: uppercase; margin-bottom: 14px;
}
.sh-eyebrow::before { content: ""; width: 22px; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--orange), var(--orange-deep)); }
.sh-sec-title { font-size: 34px; font-weight: 800; line-height: 1.25; color: var(--ink); margin: 0 0 14px; letter-spacing: -.01em; }
.sh-sec-desc { font-size: 16px; color: var(--gray); max-width: 620px; line-height: 1.7; }
.sh-sec-head { text-align: center; margin-bottom: 48px; }
.sh-sec-head .sh-sec-desc { margin-left: auto; margin-right: auto; }
.sh-sec-head .sh-eyebrow { justify-content: center; }

/* =========================================================
   HEADER (.sh-header —— 由 head.html 渲染)
   ========================================================= */
.sh-header {
  position: sticky; top: 0; z-index: 200;
  background: rgba(255,255,255,.86); backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.sh-header__inner {
  max-width: var(--maxw); margin: 0 auto; height: 74px; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.sh-logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 22px; color: var(--ink); text-decoration: none; }
.sh-logo .sh-logo__mark {
  width: 12px; height: 12px; border-radius: 4px;
  background: linear-gradient(135deg, var(--orange), var(--orange-deep)); transform: rotate(45deg);
}
.sh-nav { display: flex; align-items: center; gap: 2px; }
.sh-nav a {
  position: relative;
  padding: 10px 18px; border-radius: 10px;
  color: var(--ink); font-weight: 500; font-size: 15px; letter-spacing: .01em;
  text-decoration: none; transition: color .2s, background .2s; white-space: nowrap;
}
/* 悬停 / 当前页：橙色文字 + 底部滑动下划线，层次更清晰 */
.sh-nav a::after {
  content: ""; position: absolute; left: 18px; right: 18px; bottom: 5px; height: 2px;
  border-radius: 2px; background: linear-gradient(90deg, var(--orange), var(--orange-deep));
  transform: scaleX(0); transform-origin: center; transition: transform .25s ease;
}
.sh-nav a:hover { color: var(--orange-deep); }
.sh-nav a:hover::after { transform: scaleX(1); }
.sh-nav a.is-current { color: var(--orange-deep); font-weight: 600; }
.sh-nav a.is-current::after { transform: scaleX(1); }
/* 桌面端：菜单与右侧 CTA 之间加发丝分隔，提升层次 */
@media (min-width: 981px) {
  .sh-header__right { border-left: 1px solid var(--line); padding-left: 18px; }
}
.sh-header__right { display: flex; align-items: center; gap: 14px; }
.sh-header__tel { font-size: 14px; color: var(--gray); }
.sh-header__tel b { color: var(--ink); font-size: 15px; }
.sh-burger { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 10px;
  background: #fff; cursor: pointer; flex-direction: column; align-items: center; justify-content: center; gap: 4px; }
.sh-burger span { width: 18px; height: 2px; background: var(--ink); border-radius: 2px; transition: .25s; }

/* 移动端抽屉 */
.sh-drawer {
  position: fixed; inset: 0 0 0 auto; width: 80%; max-width: 320px; background: #fff; z-index: 300;
  transform: translateX(100%); transition: transform .3s ease; box-shadow: -10px 0 40px rgba(0,0,0,.12);
  padding: 80px 24px 24px; display: flex; flex-direction: column; gap: 6px;
}
.sh-drawer.is-open { transform: translateX(0); }
.sh-drawer a { padding: 14px 12px; border-radius: 10px; color: var(--ink); text-decoration: none; font-weight: 500; }
.sh-drawer a:hover, .sh-drawer a.is-current { background: var(--orange-soft); color: var(--orange-deep); }
.sh-drawer__close { position: absolute; top: 22px; right: 22px; font-size: 26px; background: none; border: 0; cursor: pointer; color: var(--gray); }
.sh-mask { position: fixed; inset: 0; background: rgba(20,20,30,.4); z-index: 250; opacity: 0; visibility: hidden; transition: .3s; }
.sh-mask.is-open { opacity: 1; visibility: visible; }

/* =========================================================
   HERO
   ========================================================= */
.sh-hero { position: relative; overflow: hidden; background: var(--white); }
.sh-hero::before {
  content: ""; position: absolute; top: -160px; right: -120px; width: 620px; height: 620px;
  background: radial-gradient(circle at center, rgba(239,122,44,.16), transparent 62%); pointer-events: none;
}
.sh-hero::after {
  content: ""; position: absolute; bottom: -200px; left: -120px; width: 520px; height: 520px;
  background: radial-gradient(circle at center, rgba(216,95,14,.08), transparent 62%); pointer-events: none;
}
.sh-hero__inner {
  max-width: var(--maxw); margin: 0 auto; padding: 78px 24px 88px; position: relative;
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center;
}
.sh-hero__eyebrow { color: var(--orange-deep); font-weight: 600; font-size: 14px; letter-spacing: .04em; margin-bottom: 18px; }
.sh-hero h1 { font-size: 52px; line-height: 1.15; font-weight: 800; letter-spacing: -.02em; margin: 0 0 20px; color: var(--ink); }
.sh-hero h1 .hl { color: var(--orange-deep); }
.sh-hero__lead { font-size: 17px; line-height: 1.8; color: var(--gray); margin: 0 0 32px; max-width: 520px; }
.sh-hero__ctas { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 26px; }
.sh-hero__trust { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--gray); }
.sh-hero__trust .sh-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 4px rgba(239,122,44,.18); }

/* Hero 右侧数据看板 mock */
.sh-dash {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: 22px;
  box-shadow: var(--shadow); padding: 22px; width: 100%; max-width: 440px; margin-left: auto;
}
.sh-dash__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.sh-dash__title { font-weight: 700; font-size: 15px; }
.sh-dash__live { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: #18a058; }
.sh-dash__live i { width: 7px; height: 7px; border-radius: 50%; background: #18a058; box-shadow: 0 0 0 3px rgba(24,160,88,.18); }
.sh-dash__kpis { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 16px; }
.sh-kpi { background: var(--orange-soft); border-radius: 14px; padding: 14px 16px; }
.sh-kpi__v { font-size: 24px; font-weight: 800; color: var(--orange-deep); }
.sh-kpi__l { font-size: 12px; color: var(--gray); margin-top: 2px; }
.sh-bar-chart { display: flex; align-items: flex-end; gap: 8px; height: 120px; padding-top: 6px; }
.sh-bar { flex: 1; border-radius: 8px 8px 4px 4px; background: linear-gradient(180deg, var(--orange), #f6b489); position: relative; }
.sh-bar.is-soft { background: var(--orange-soft); }
.sh-chips { position: absolute; }
.sh-chip {
  position: absolute; display: inline-flex; align-items: center; gap: 8px; background: #fff;
  border: 1px solid var(--line); border-radius: 999px; padding: 10px 16px; font-weight: 700; font-size: 14px;
  color: var(--orange-deep); box-shadow: var(--shadow-sm);
}
.sh-chip--1 { top: -22px; right: -18px; }
.sh-chip--2 { bottom: 36px; left: -34px; }
.sh-chip i { width: 8px; height: 8px; border-radius: 50%; background: var(--orange); }

/* =========================================================
   全平台资源覆盖条
   ========================================================= */
.sh-platforms { background: var(--white); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sh-platforms__inner { max-width: var(--maxw); margin: 0 auto; padding: 22px 24px; display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.sh-platforms__label { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; color: var(--ink); font-size: 15px; }
.sh-platforms__label .sh-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--orange); }
.sh-platforms__tags { display: flex; gap: 10px; flex-wrap: wrap; }
.sh-ptag { padding: 7px 16px; border-radius: 999px; background: var(--cream); color: var(--gray); font-size: 14px; font-weight: 500; }

/* =========================================================
   核心服务 Bento
   ========================================================= */
.sh-bento { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.sh-svc {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 26px;
  transition: .25s ease; position: relative; overflow: hidden;
}
.sh-svc::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--orange-deep)); transform: scaleX(0); transform-origin: left; transition: .3s; }
.sh-svc:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--orange-line); }
.sh-svc:hover::after { transform: scaleX(1); }
.sh-svc__ico { width: 52px; height: 52px; border-radius: 14px; background: var(--orange-soft);
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px; color: var(--orange-deep); }
.sh-svc__ico svg { width: 26px; height: 26px; }
.sh-svc h3 { font-size: 19px; font-weight: 700; margin: 0 0 10px; color: var(--ink); }
.sh-svc p { font-size: 14.5px; line-height: 1.7; color: var(--gray); margin: 0 0 14px; }
.sh-svc__more { font-size: 14px; font-weight: 600; color: var(--orange-deep); text-decoration: none; display: inline-flex; align-items: center; gap: 6px; }
.sh-svc__more:hover { gap: 10px; }

/* =========================================================
   资源实力 数据
   ========================================================= */
.sh-metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.sh-metric { padding: 10px 8px; position: relative; }
.sh-metric + .sh-metric::before { content: ""; position: absolute; left: -10px; top: 18%; height: 64%; width: 1px; background: var(--line); }
.sh-metric__v { font-size: 42px; font-weight: 800; color: var(--orange-deep); letter-spacing: -.02em; }
.sh-metric__l { font-size: 15px; color: var(--gray); margin-top: 6px; }

/* =========================================================
   为什么选择我们
   ========================================================= */
.sh-why { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: center; }
.sh-why__lead h2 { font-size: 38px; font-weight: 800; line-height: 1.25; margin: 0 0 16px; letter-spacing: -.01em; }
.sh-why__lead p { font-size: 16px; color: var(--gray); line-height: 1.8; max-width: 420px; }
.sh-why__list { display: flex; flex-direction: column; }
.sh-adv { display: flex; gap: 18px; padding: 22px 0; }
.sh-adv + .sh-adv { border-top: 1px solid var(--line); }
.sh-adv__no { font-size: 30px; font-weight: 800; color: var(--orange-soft); -webkit-text-stroke: 1px var(--orange); line-height: 1; min-width: 46px; }
.sh-adv h4 { font-size: 18px; font-weight: 700; margin: 0 0 6px; color: var(--ink); }
.sh-adv p { font-size: 14.5px; color: var(--gray); line-height: 1.7; margin: 0; }

/* =========================================================
   案例 & 新闻
   ========================================================= */
.sh-cn { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.sh-cases { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.sh-case { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: .25s; text-decoration: none; color: inherit; }
.sh-case:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.sh-case__img { height: 150px; background: linear-gradient(135deg, var(--orange), var(--orange-deep)); position: relative; }
.sh-case__img span { position: absolute; left: 16px; bottom: 14px; color: #fff; font-weight: 700; font-size: 16px; }
.sh-case__body { padding: 16px 18px 20px; }
.sh-case__tag { font-size: 12px; color: var(--orange-deep); font-weight: 600; }
.sh-case__body h4 { font-size: 16px; font-weight: 700; margin: 6px 0 8px; }
.sh-case__body p { font-size: 13.5px; color: var(--gray); line-height: 1.65; margin: 0; }

.sh-news__head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 8px; }
.sh-news__head h3 { font-size: 20px; font-weight: 700; margin: 0; }
.sh-news__head a { font-size: 13px; color: var(--orange-deep); text-decoration: none; }
.sh-news { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 8px 22px; }
.sh-news__item { display: flex; gap: 14px; padding: 16px 0; text-decoration: none; color: inherit; align-items: center; }
.sh-news__item + .sh-news__item { border-top: 1px solid var(--line); }
.sh-news__date { min-width: 52px; text-align: center; }
.sh-news__date b { display: block; font-size: 22px; font-weight: 800; color: var(--orange-deep); line-height: 1; }
.sh-news__date span { font-size: 12px; color: var(--gray-2); }
.sh-news__item h4 { font-size: 15px; font-weight: 600; margin: 0 0 4px; color: var(--ink); transition: .2s; }
.sh-news__item p { font-size: 13px; color: var(--gray); margin: 0; line-height: 1.6; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; }
.sh-news__item:hover h4 { color: var(--orange-deep); }

/* =========================================================
   联系 CTA + 表单
   ========================================================= */
.sh-contact { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.sh-contact__title { font-size: 38px; font-weight: 800; line-height: 1.25; margin: 0 0 16px; letter-spacing: -.01em; }
.sh-contact__desc { font-size: 16px; color: var(--gray); line-height: 1.8; max-width: 440px; margin: 0 0 24px; }
.sh-contact__info { display: flex; flex-direction: column; gap: 12px; }
.sh-contact__row { display: flex; align-items: center; gap: 10px; font-size: 15px; color: var(--ink); }
.sh-contact__row .sh-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--orange); }

.sh-form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow-sm); }
.sh-form h3 { font-size: 20px; font-weight: 700; margin: 0 0 18px; }
.sh-field { margin-bottom: 14px; }
.sh-field input, .sh-field textarea {
  width: 100%; padding: 13px 16px; border: 1px solid var(--line); border-radius: 12px;
  font-size: 15px; font-family: var(--font); color: var(--ink); background: #fff; transition: .2s; resize: vertical;
}
.sh-field input:focus, .sh-field textarea:focus { outline: none; border-color: var(--orange); box-shadow: 0 0 0 3px rgba(239,122,44,.14); }
.sh-field input::placeholder, .sh-field textarea::placeholder { color: var(--gray-2); }
.sh-form .sh-btn { width: 100%; margin-top: 4px; }
.sh-form__note { font-size: 12.5px; color: var(--gray-2); margin: 12px 0 0; text-align: center; }
.sh-form__ok { display: none; text-align: center; padding: 18px 0; color: #18a058; font-weight: 600; }

/* =========================================================
   FOOTER (.sh-footer —— 由 footer.html 渲染)
   ========================================================= */
.sh-footer { background: var(--footer-bg); border-top: 1px solid var(--line); padding: 56px 0 26px; }
.sh-footer__top { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: 36px; }
.sh-footer__brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--ink); margin-bottom: 12px; }
.sh-footer__brand .sh-logo__mark { width: 11px; height: 11px; border-radius: 4px; background: linear-gradient(135deg, var(--orange), var(--orange-deep)); transform: rotate(45deg); }
.sh-footer__brand-desc { font-size: 14px; color: var(--gray); line-height: 1.7; max-width: 260px; }
.sh-footer__col h5 { font-size: 15px; font-weight: 700; color: var(--ink); margin: 4px 0 16px; }
.sh-footer__col a { display: block; font-size: 14px; color: var(--gray); text-decoration: none; margin-bottom: 11px; transition: .2s; }
.sh-footer__col a:hover { color: var(--orange-deep); }
.sh-footer__contact p { font-size: 14px; color: var(--gray); margin: 0 0 10px; }
.sh-footer__contact b { color: var(--ink); }
.sh-footer__line { max-width: var(--maxw); margin: 36px auto 18px; padding: 0 24px; }
.sh-footer__line hr { border: 0; border-top: 1px solid var(--line); }
.sh-footer__bottom { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--gray-2); }

/* 返回顶部 + 移动端悬浮条（沿用旧结构类名，保持兼容） */
.return_top { display: none; }
.sh-suspend { position: fixed; right: 18px; bottom: 90px; z-index: 150; display: none; }
@media (max-width: 768px) { .sh-suspend { display: flex; flex-direction: column; gap: 10px; } }

/* =========================================================
   响应式
   ========================================================= */
@media (max-width: 1024px) {
  .sh-hero__inner { grid-template-columns: 1fr; gap: 40px; padding-top: 56px; }
  .sh-hero h1 { font-size: 42px; }
  .sh-dash { margin: 0 auto; }
  .sh-why, .sh-cn, .sh-contact { grid-template-columns: 1fr; gap: 32px; }
  .sh-bento { grid-template-columns: repeat(2, 1fr); }
  .sh-metrics { grid-template-columns: repeat(2, 1fr); gap: 28px 12px; }
  .sh-metric + .sh-metric::before { display: none; }
  .sh-footer__top { grid-template-columns: 1fr 1fr; gap: 28px; }
}
@media (max-width: 768px) {
  .sh-nav, .sh-header__tel { display: none; }
  .sh-burger { display: flex; }
  .sh-section { padding: 60px 0; }
  .sh-hero h1 { font-size: 34px; }
  .sh-sec-title { font-size: 27px; }
  .sh-bento { grid-template-columns: 1fr; }
  .sh-cases { grid-template-columns: 1fr; }
  .sh-metrics { grid-template-columns: 1fr 1fr; }
  .sh-footer__top { grid-template-columns: 1fr; }
  .sh-footer__bottom { flex-direction: column; }
}