/* ============================================================
   外贸门面站 · 基础样式
   白底黑字 / 无图片（保留图片位）/ 中英双语
   ============================================================ */

:root {
  --ink:      #111111;
  --ink-2:    #444444;
  --ink-3:    #6b6b6b;
  --ink-4:    #9a9a9a;
  --line:     #e6e6e6;
  --line-2:   #cfcfcf;
  --bg:       #ffffff;
  --bg-soft:  #fafafa;
  --bg-tint:  #f4f4f4;
  --max:      1120px;
  --radius:   4px;
  --header-h: 76px;
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Helvetica Neue", Helvetica, Arial,
               "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", "微软雅黑", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 语言切换（独立 URL，利于谷歌收录 + hreflang） ---------- */
.lang-toggle {
  display: flex;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  overflow: hidden;
  flex-shrink: 0;
}

.lang-toggle a {
  display: block;
  background: #fff;
  color: var(--ink-3);
  font-size: 12px;
  text-decoration: none;
  padding: 6px 12px;
  line-height: 1;
  white-space: nowrap;
  transition: background .15s, color .15s;
}

.lang-toggle a + a { border-left: 1px solid var(--line-2); }
.lang-toggle a.on { background: var(--ink); color: #fff; }

/* ---------- 布局 ---------- */
.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 72px 0; }
section.tight { padding: 48px 0; }
section + section { border-top: 1px solid var(--line); }

/* 锚点定位补偿吸顶头部高度，避免标题被遮住 */
section[id], [id] { scroll-margin-top: calc(var(--header-h) + 16px); }

/* ---------- 联系我们页 ---------- */
.contact-screen { padding: 44px 0; }

.contact-screen .wrap { width: 100%; }

/* 两栏区块撑满首屏：左＝站内留言表单，右＝我的邮箱 + 社媒 */
.contact-cols {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  min-height: calc(100vh - var(--header-h) - 88px);
  min-height: calc(100svh - var(--header-h) - 88px);
}

.contact-cols > div {
  background: #fff;
  padding: 34px 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.col-title {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-4);
  font-weight: 600;
  margin: 0 0 24px;
}

/* 右侧：更多联系方式（真实品牌图标格） */
.social-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.social-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 16px 6px 12px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  color: var(--ink-2);
  text-decoration: none;
  transition: border-color .18s ease, color .18s ease, transform .18s ease;
}

.social-item:hover { border-color: var(--ink); color: var(--ink); transform: translateY(-2px); }

.social-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  flex: none;
}

.social-mark svg { width: 26px; height: 26px; fill: currentColor; display: block; }

.social-item em { font-style: normal; font-size: 11.5px; letter-spacing: 0.02em; }

/* Email 卡片跨两列，内部放两个邮箱 */
.social-item-wide {
  grid-column: span 2;
  flex-direction: row;
  align-items: center;
  justify-content: flex-start;
  gap: 14px;
  padding: 14px 16px;
}

.wide-text { display: flex; flex-direction: column; gap: 3px; text-align: left; min-width: 0; }

.wide-text em { font-weight: 600; }
.wide-text .social-mails { font-size: 11.5px; color: var(--ink-4); line-height: 1.6; word-break: break-all; }

.social-note { font-size: 12px; color: var(--ink-4); margin: 16px 0 0; }

/* 普通社交项下的副标题（如手机号）；微信项可点击复制 */
.social-sub { font-size: 11px; color: var(--ink-4); letter-spacing: 0.02em; }
.social-item[data-copy] { cursor: pointer; }

/* 左栏：站内留言表单填满整栏宽度，并压缩行距以适配单屏 */
.contact-form-side .form { max-width: none; }
.contact-form-side .field { margin-bottom: 12px; }
.contact-form-side .field textarea { min-height: 84px; }
.contact-form-side .form-note { margin-top: 10px; }
.contact-form-side .btn { align-self: flex-start; }

@media (max-width: 900px) {
  .contact-cols { grid-template-columns: 1fr; min-height: 0; }
  .contact-cols > div { justify-content: flex-start; }
  .contact-side { order: -1; }   /* 手机上先显示联系方式 */
}

@media (max-width: 640px) {
  .contact-screen { padding: 40px 0; }
  .contact-cols > div { padding: 28px 22px; }
  .social-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
}

/* ---------- 简介页 ---------- */
.intro-lead {
  max-width: 760px;
  margin: 0 0 36px;
}

.intro-lead p {
  font-size: clamp(16px, 1.8vw, 19px);
  line-height: 1.95;
  color: var(--ink-2);
  margin: 0 0 18px;
}

.intro-lead p:first-child {
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.7;
}

.intro-lead b { font-weight: 700; color: var(--ink); }

/* 服务清单（竖排九条） */
.svc-list { border-top: 1px solid var(--line); }

.svc-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 22px;
  padding: 26px 6px;
  border-bottom: 1px solid var(--line);
  transition: background .18s ease, padding-left .18s ease;
}

.svc-item:hover { background: var(--bg-soft); padding-left: 20px; }

.svc-num {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--ink-4);
  padding-top: 6px;
  font-variant-numeric: tabular-nums;
  transition: color .18s ease;
}

.svc-item:hover .svc-num { color: var(--ink); }

.svc-body h3 {
  margin: 0 0 9px;
  font-size: clamp(16px, 1.8vw, 19px);
  font-weight: 700;
  line-height: 1.5;
}

.svc-body p {
  margin: 0;
  font-size: 14.5px;
  color: var(--ink-3);
  line-height: 1.85;
}

@media (max-width: 640px) {
  .svc-item { grid-template-columns: 40px 1fr; gap: 14px; padding: 22px 2px; }
  .svc-item:hover { padding-left: 2px; }
  .svc-num { font-size: 11px; padding-top: 5px; }
}

/* ---------- 横向时间轴（关于外贸） ---------- */
.timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
}

.timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  left: calc(100% / 14);
  right: calc(100% / 14);
  height: 1px;
  background: var(--line-2);
}

.tl-item {
  position: relative;
  padding: 0 12px;
  text-align: center;
}

.tl-dot {
  width: 13px;
  height: 13px;
  margin: 0 auto 20px;
  border: 2px solid var(--ink);
  border-radius: 50%;
  background: var(--bg);
  position: relative;
  z-index: 1;
  transition: background .18s ease, transform .18s ease;
}

.tl-item:hover .tl-dot { background: var(--ink); transform: scale(1.15); }

.tl-year {
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--ink-4);
  font-variant-numeric: tabular-nums;
}

.tl-item h3 {
  margin: 9px 0 9px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.45;
}

.tl-item p {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.72;
  color: var(--ink-3);
}

@media (max-width: 900px) {
  .timeline { grid-template-columns: repeat(2, 1fr); gap: 32px 0; }
  .timeline::before { display: none; }
  .tl-item { text-align: left; padding: 0 10px 0 0; }
  .tl-dot { margin: 0 0 14px; }
}

@media (max-width: 640px) {
  .timeline { grid-template-columns: 1fr; }
}

/* ---------- 长文排版 ---------- */
.longform { max-width: 780px; margin: 0 auto; }

.longform h3 {
  margin: 36px 0 12px;
  font-size: clamp(16px, 1.8vw, 19px);
  font-weight: 700;
  line-height: 1.6;
}

.longform h3:first-child { margin-top: 0; }

.longform p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--ink-2);
}

.longform .closing {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.85;
}

/* ---------- 整屏子页：关于我们 / 我们的介绍 / 我们可以做什么 ---------- */
.fullpage {
  min-height: calc(100vh - var(--header-h));
  min-height: calc(100svh - var(--header-h));
  display: flex;
  padding: 56px 0;
}

/* 内容不足一屏时垂直居中；超过一屏时自然从上排布，不裁顶
   注意只能用 margin-block，否则会覆盖 .wrap 的左右 auto 导致内容偏左 */
.fullpage .wrap { margin-block: auto; }

.fp-head .kicker { margin-bottom: 0; }

/* 整页居中（标题区 + 网格一起居中） */
.fp-head.center { text-align: center; }
.fp-head.center .fp-lead { margin-left: auto; margin-right: auto; }

.fp-head h1 {
  font-size: clamp(31px, 5vw, 54px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin: 14px 0 24px;
}

.fp-lead {
  font-size: clamp(16px, 1.9vw, 21px);
  line-height: 1.9;
  color: var(--ink-2);
  max-width: 820px;
  margin: 0 0 42px;
}

/* 关于我们：两个入口 */
.entry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.entry-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: #fff;
  padding: 34px 28px 30px;
  text-decoration: none;
  color: var(--ink);
  text-align: center;
  transition: background .18s ease;
}

.entry-card:hover { background: var(--bg-soft); }

.entry-num {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--ink-4);
}

.entry-card h3 {
  margin: 14px 0 10px;
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 700;
  line-height: 1.5;
}

.entry-card p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-3);
  line-height: 1.8;
  /* 三张卡文案长短不一，留两行高度让底部箭头横向对齐 */
  min-height: 50px;
}

.entry-arrow {
  display: block;
  margin-top: 18px;
  font-size: 15px;
  color: var(--ink-4);
  transition: color .18s ease, transform .18s ease;
}

.entry-card:hover .entry-arrow { color: var(--ink); transform: translateX(5px); }

/* ---------- 我们的介绍：逐句淡入序列 ----------
   0.15s  第 1 行「想必你也厌倦了网上铺天盖地的虚假推广和噱头新闻」
   0.95s  第 2 行「大道至简」
   1.75s  第 3 行「从零开始，我们会一直陪你到成功」（页面 h1，居中大字）
   2.90s  底部「只有这两句？」分类入口按钮
   全部为纯 CSS 关键帧，不依赖 JS；刷新即重播 */
.intro-screen {
  position: relative;
  overflow: hidden;
  min-height: calc(100vh - var(--header-h));
  min-height: calc(100svh - var(--header-h));
  display: flex;
  flex-direction: column;
  padding: 46px 0 36px;
}

.intro-screen .wrap {
  width: 100%;
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

/* 三行依次淡入 */
.intro-lines { text-align: center; margin: auto 0; }

.intro-lines .line {
  margin: 0;
  opacity: 0;
  animation: lineIn .75s cubic-bezier(.22, .61, .36, 1) forwards;
}

.intro-lines .l1 {
  font-size: clamp(14px, 1.6vw, 17px);
  line-height: 1.95;
  letter-spacing: 0.02em;
  color: var(--ink-3);
  max-width: 620px;
  margin: 0 auto 28px;
  animation-delay: .15s;
}

.intro-lines .l2 {
  font-size: clamp(19px, 2.5vw, 28px);
  font-weight: 700;
  color: var(--ink-2);
  margin: 0 0 20px;
  animation-delay: .8s;
}

/* 「大道至简」之后：一句话概括目的 */
.intro-lines .l2b {
  font-size: clamp(15px, 1.75vw, 19px);
  line-height: 1.8;
  letter-spacing: 0.01em;
  color: var(--ink-2);
  max-width: 640px;
  margin: 0 auto 26px;
  animation-delay: 1.45s;
}

.intro-lines .l3 {
  font-size: clamp(27px, 4.4vw, 52px);
  font-weight: 700;
  line-height: 1.38;
  letter-spacing: -0.01em;
  color: var(--ink);
  animation-delay: 2.1s;
}

.intro-screen .intro-more {
  align-self: center;
  opacity: 0;
  animation: lineIn .75s cubic-bezier(.22, .61, .36, 1) forwards;
  animation-delay: 3.2s;
}

@keyframes lineIn {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}

.intro-more {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  max-width: 100%;
  padding: 11px 20px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-3);
  text-decoration: none;
  text-align: center;
  transition: color .18s ease, border-color .18s ease, background .18s ease;
}

.intro-more:hover {
  color: var(--ink);
  border-color: var(--ink);
  background: var(--bg-soft);
}

.intro-more .arrow {
  flex: none;
  transition: transform .18s ease;
}

.intro-more:hover .arrow { transform: translateX(4px); }

/* 关闭动效时直接呈现最终状态 */
@media (prefers-reduced-motion: reduce) {
  .intro-lines .line,
  .intro-screen .intro-more { opacity: 1; animation: none; transform: none; }
}

/* 我们的介绍：整段文字 */
.intro-page p {
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.95;
  color: var(--ink-2);
  margin: 0 0 22px;
  max-width: 860px;
}

.intro-page p.strong {
  font-size: clamp(21px, 2.6vw, 30px);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.6;
  margin-bottom: 30px;
}

.intro-page .notice { max-width: 860px; }

/* 我们可以做什么：3 x 3 */
.svc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.svc-cell {
  background: #fff;
  padding: 34px 26px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  text-decoration: none;
  color: var(--ink);
  transition: background .18s ease;
}

.svc-cell:hover { background: var(--bg-soft); }

.svc-cell .svc-num {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--ink-4);
  padding: 0;
  transition: color .18s ease;
}

.svc-cell:hover .svc-num { color: var(--ink); }

.svc-cell h3 {
  margin: 14px 0 9px;
  font-size: clamp(15.5px, 1.6vw, 17.5px);
  font-weight: 700;
  line-height: 1.5;
}

.svc-cell p { margin: 0; font-size: 13.5px; color: var(--ink-3); line-height: 1.78; }

.svc-more {
  display: block;
  margin-top: 16px;
  font-size: 15px;
  line-height: 1;
  color: var(--line-2);
  transition: color .18s ease, transform .18s ease;
}

.svc-cell:hover .svc-more { color: var(--ink); transform: translateX(5px); }

@media (max-width: 900px) {
  .fullpage { padding: 40px 0; }
  .svc-grid { grid-template-columns: repeat(2, 1fr); }
  .entry-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .svc-grid { grid-template-columns: 1fr; }
}

/* ---------- 时事新闻列表 ---------- */
.news-list { border-top: 1px solid var(--line); }

/* 每条是链接，整块可点 */
a.news-item {
  display: grid;
  grid-template-columns: 116px 1fr;
  gap: 28px;
  padding: 26px 6px;
  border-bottom: 1px solid var(--line);
  align-items: start;
  text-decoration: none;
  color: inherit;
  transition: background .18s ease, padding-left .18s ease;
}

a.news-item:hover { background: var(--bg-soft); padding-left: 20px; }

.news-item time {
  font-size: 13px;
  color: var(--ink-4);
  letter-spacing: 0.04em;
  padding-top: 3px;
  font-variant-numeric: tabular-nums;
}

.news-item h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.55;
}

a.news-item:hover h3 { text-decoration: underline; }

.news-item p { margin: 0; font-size: 14px; color: var(--ink-3); line-height: 1.85; }

.news-item .news-impact {
  margin-top: 10px;
  padding-left: 14px;
  border-left: 3px solid var(--line-2);
  color: var(--ink-2);
}

.news-item .news-src { margin-top: 10px; font-size: 12.5px; color: var(--ink-4); }

.news-more {
  display: inline-block;
  margin-top: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-2);
}

@media (max-width: 640px) {
  a.news-item { grid-template-columns: 1fr; gap: 8px; }
}

/* ---------- 新闻详情页 ---------- */
.news-meta { font-size: 13.5px; color: var(--ink-4); margin: 8px 0 0; }
.news-meta time { font-variant-numeric: tabular-nums; }

.news-article { max-width: 780px; }
.news-article p { font-size: 15.5px; line-height: 1.95; color: var(--ink-2); margin: 0 0 20px; }

.news-figure { margin: 0 0 32px; }

.news-h2 {
  font-size: 18px;
  font-weight: 700;
  margin: 34px 0 16px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.news-actions {
  margin: 0 0 28px;
  padding-left: 20px;
  font-size: 15px;
  color: var(--ink-2);
  line-height: 2.05;
}

.news-actions li::marker { color: var(--ink-4); }

.news-article .news-src { font-size: 13px; color: var(--ink-4); margin-top: 12px; }

/* ---------- 目录（第二屏） ---------- */
.toc {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  min-height: calc(100svh - var(--header-h));
  padding: 64px 0 100px;   /* 底部留出「联系我们」下滑提示的位置 */
  display: flex;
  align-items: center;
}

.toc .wrap { width: 100%; }
.toc .sec-head { margin-bottom: 30px; }

.toc-list { border-top: 1px solid var(--line); }

.toc-list a {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 21px 6px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: var(--ink);
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 700;
  text-align: left;
  transition: padding-left .18s ease, background .18s ease, color .18s ease;
}

/* 前缀短横线：- 介绍 */
.toc-list a::before {
  content: "-";
  flex: none;
  color: var(--ink-4);
  font-weight: 400;
}

.toc-list a:hover { padding-left: 20px; background: var(--bg-soft); }
.toc-list a:hover::before { color: var(--ink); }

.toc-name { flex: 1; }

/* ---------- 进入视口动画（由 site.js 触发） ---------- */
/* 默认可见：无 JS / 爬虫 / 打印时内容照常呈现，不影响 SEO */
.reveal { opacity: 1; transform: none; }

html.js .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .55s cubic-bezier(.22,.61,.36,1),
              transform .55s cubic-bezier(.22,.61,.36,1);
  will-change: opacity, transform;
}

html.js .reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html.js .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- 首屏文字淡入（CSS 关键帧，页面打开即播放） ----------
   用 animation 而不是 transition + IntersectionObserver：
   首屏在首帧就已进入视口，观察器回调可能早于首次绘制，
   过渡会被合并而看不到效果。关键帧是确定性的。 */
@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: none; }
}

html.js .hero .eyebrow,
html.js .hero h1,
html.js .hero .sub,
html.js .hero .scroll-hint {
  /* 用 backwards 而非 both：动画结束后释放控制权，
     否则 fill-forwards 会压住 .scroll-hint 的 hover 透明度变化 */
  animation: heroFadeUp .75s cubic-bezier(.22, .61, .36, 1) backwards;
}

html.js .hero .eyebrow     { animation-delay: .04s; }
html.js .hero h1           { animation-delay: .16s; }
html.js .hero .sub         { animation-delay: .30s; }
html.js .hero .scroll-hint { animation-delay: .46s; }

@media (prefers-reduced-motion: reduce) {
  html.js .hero .eyebrow,
  html.js .hero h1,
  html.js .hero .sub,
  html.js .hero .scroll-hint { animation: none; }
}

/* 视口高度的整屏区块（首屏 / 目录 / 联系页） */
.screen { min-height: calc(100vh - var(--header-h)); min-height: calc(100svh - var(--header-h)); }

/* ---------- 子页面 ---------- */
.back-link {
  display: inline-block;
  font-size: 13px;
  color: var(--ink-3);
  text-decoration: none;
  margin-bottom: 20px;
}

.back-link:hover { color: var(--ink); text-decoration: underline; }

.page-head .back-link + .kicker { margin-top: 0; }

/* ---------- 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 24px;
}

.brand {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.15;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

.brand small {
  display: block;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--ink-4);
  line-height: 1.6;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  flex: 1;
  justify-content: center;
}

.nav a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: color .15s, border-color .15s;
}

.nav a:hover { color: var(--ink); border-bottom-color: var(--ink); }

/* ---------- 首屏（开屏页：撑满整个视口） ---------- */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  min-height: calc(100svh - var(--header-h));
  padding: 56px 0 100px;   /* 底部留出「了解更多」下滑提示的位置 */
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  border-top: 0;
}

.hero .eyebrow {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 22px;
}

.hero h1 {
  font-size: clamp(34px, 5.6vw, 60px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-weight: 700;
  margin: 0 0 26px;
}

.hero .sub {
  font-size: clamp(15px, 1.7vw, 19px);
  color: var(--ink-2);
  margin: 0 auto;
  max-width: 720px;
  line-height: 1.75;
}

/* ---------- 首屏底部「了解更多」下滑提示 ---------- */
/* 注意：不用 translateX(-50%) 居中 —— .reveal 动画会写 transform: none，
   会把居中位移一起干掉。改用 left/right:0 + margin:auto + fit-content。 */
.scroll-hint {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 30px;
  margin-left: auto;
  margin-right: auto;
  width: fit-content;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  text-decoration: none;
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-align: center;
  transition: opacity .2s ease;
}

.scroll-hint:hover { opacity: .65; }

.scroll-arrow {
  font-size: 22px;
  font-weight: 400;
  line-height: 1;
  animation: scroll-bob 1.7s ease-in-out infinite;
}

@keyframes scroll-bob {
  0%, 100% { transform: translateY(-3px); opacity: .35; }
  50%      { transform: translateY(5px);  opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-arrow { animation: none; opacity: 1; }
}

@media (max-width: 640px) {
  .scroll-hint { bottom: 20px; font-size: 12px; }
  .scroll-arrow { font-size: 20px; }
}

.hero .sub span { white-space: nowrap; }
.hero .sub em { font-style: normal; color: var(--ink-4); padding: 0 6px; }

.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: var(--radius);
  font-size: 14px;
  text-decoration: none;
  border: 1px solid var(--ink);
  transition: background .15s, color .15s;
}

.btn.solid { background: var(--ink); color: #fff; }
.btn.solid:hover { background: #000; }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost:hover { background: var(--bg-tint); }

/* ---------- 区块标题 ---------- */
.sec-head { margin-bottom: 40px; }
.sec-head.center { text-align: center; }

.sec-head .kicker {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin: 0 0 12px;
}

.sec-head h2 {
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.35;
  margin: 0 0 12px;
  font-weight: 700;
}

.sec-head p {
  margin: 0;
  color: var(--ink-3);
  font-size: 15px;
  max-width: 640px;
}

.sec-head.center p { margin-left: auto; margin-right: auto; }

/* ---------- 卡片网格 ---------- */
.grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.grid.col-2 { grid-template-columns: repeat(2, 1fr); }
.grid.col-3 { grid-template-columns: repeat(3, 1fr); }
.grid.col-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--bg);
  padding: 30px 26px;
  display: flex;
  flex-direction: column;
}

/* 从「我们可以做什么」跳进来时，高亮对应的那一项 */
.card:target {
  box-shadow: inset 0 0 0 2px var(--ink);
  background: var(--bg-soft);
}

.card .num {
  font-size: 12px;
  color: var(--ink-4);
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}

.card h3 {
  font-size: 17px;
  margin: 0 0 10px;
  font-weight: 700;
  line-height: 1.5;
}

.card p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-3);
  line-height: 1.75;
}

.card ul {
  margin: 12px 0 0;
  padding-left: 16px;
  font-size: 13.5px;
  color: var(--ink-3);
  line-height: 1.85;
}

.card ul li::marker { color: var(--ink-4); }

/* ---------- 服务列表（详情行） ---------- */
.svc-list { border-top: 1px solid var(--line); }

.svc-row {
  display: grid;
  grid-template-columns: 56px 1fr 240px;
  gap: 28px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

.svc-row .idx {
  font-size: 13px;
  color: var(--ink-4);
  letter-spacing: 0.08em;
  padding-top: 3px;
}

.svc-row h3 { margin: 0 0 6px; font-size: 16px; font-weight: 700; }
.svc-row p { margin: 0; font-size: 14px; color: var(--ink-3); }

.svc-row .meta {
  font-size: 13px;
  color: var(--ink-4);
  text-align: right;
  line-height: 1.9;
}

/* ---------- 图片位（占位） ---------- */
.ph {
  position: relative;
  background: var(--bg-tint);
  border: 1px dashed var(--line-2);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  color: var(--ink-4);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-align: center;
  padding: 20px;
  min-height: 150px;
  user-select: none;
}

.ph::before {
  content: "";
  display: block;
  width: 26px;
  height: 20px;
  border: 1.5px solid var(--line-2);
  border-radius: 2px;
}

.ph .ph-note { font-size: 11px; color: var(--ink-4); opacity: .8; }

.ph-16x9  { aspect-ratio: 16 / 9;  min-height: 0; }
.ph-4x3   { aspect-ratio: 4 / 3;   min-height: 0; }
.ph-1x1   { aspect-ratio: 1 / 1;   min-height: 0; }
.ph-tall  { aspect-ratio: 3 / 4;   min-height: 0; }

/* ---------- 产品分类 ---------- */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.tabs button {
  font-family: inherit;
  font-size: 13.5px;
  padding: 8px 16px;
  border: 1px solid var(--line-2);
  background: #fff;
  color: var(--ink-2);
  border-radius: 999px;
  cursor: pointer;
  transition: all .15s;
}

.tabs button:hover { border-color: var(--ink-3); color: var(--ink); }
.tabs button.on { background: var(--ink); border-color: var(--ink); color: #fff; }

.prod-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.prod-item { display: flex; flex-direction: column; gap: 12px; }

.prod-item .cap {
  font-size: 13.5px;
  color: var(--ink-2);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  line-height: 1.5;
}

.prod-item .cap em {
  font-style: normal;
  color: var(--ink-4);
  font-size: 12px;
  white-space: nowrap;
}

.prod-item.hidden { display: none; }

/* ---------- 承诺 / 双栏 ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.split > div { background: #fff; padding: 34px 30px; }

.split h3 {
  font-size: 15px;
  margin: 0 0 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.split ul {
  margin: 0;
  padding-left: 18px;
  font-size: 14px;
  color: var(--ink-3);
  line-height: 2;
}

.split ul li::marker { color: var(--ink-4); }

/* ---------- 联系 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.contact-grid > div { background: #fff; padding: 26px 24px; }

.contact-grid h4 {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-4);
  font-weight: 600;
}

.contact-grid a,
.contact-grid span {
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
  word-break: break-all;
}

.contact-grid a:hover { text-decoration: underline; }

.todo {
  color: var(--ink-4) !important;
  font-size: 13px !important;
  font-style: normal;
}

.todo-badge {
  display: inline-block;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--ink-4);
  border: 1px dashed var(--line-2);
  border-radius: 999px;
  padding: 1px 8px;
  margin-left: 6px;
  vertical-align: middle;
  text-transform: uppercase;
}

/* ---------- 表单 ---------- */
.form { max-width: 640px; }

.field { margin-bottom: 18px; }

.field label {
  display: block;
  font-size: 13px;
  color: var(--ink-2);
  margin-bottom: 6px;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  font-family: inherit;
  font-size: 14px;
  padding: 10px 12px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--ink);
}

.field textarea { min-height: 120px; resize: vertical; }

.form-note {
  font-size: 12.5px;
  color: var(--ink-4);
  margin-top: 14px;
  line-height: 1.8;
}

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 44px 0 56px;
  background: var(--bg-soft);
}

.foot-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  margin-bottom: 34px;
}

/* 页脚品牌略小，保持层次 */
.site-footer .brand { font-size: 20px; }
.site-footer .brand small { font-size: 10.5px; }

.foot-col h5 {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin: 0 0 14px;
  font-weight: 600;
}

.foot-col a {
  display: block;
  color: var(--ink-2);
  text-decoration: none;
  font-size: 13.5px;
  line-height: 2.1;
}

.foot-col a:hover { color: var(--ink); text-decoration: underline; }

/* 页脚里可点击复制的项（微信号）— 与 a 保持同样的排版 */
.foot-col .foot-link {
  display: block;
  color: var(--ink-2);
  text-decoration: none;
  font-size: 13.5px;
  line-height: 2.1;
  cursor: pointer;
}
.foot-col .foot-link:hover { color: var(--ink); text-decoration: underline; }

.foot-bottom {
  border-top: 1px solid var(--line);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: var(--ink-4);
}

/* ---------- 服务分类页：去分隔线 + 紧凑排版 ---------- */
.page-head.compact {
  border-bottom: none;
  padding: 36px 0 6px;
}
.page-head.compact h1 { margin-bottom: 10px; }
.page-head.compact + section { border-top: none; padding-top: 24px; }

/* ---------- 内页头部 ---------- */
.page-head {
  padding: 64px 0 40px;
  border-bottom: 1px solid var(--line);
}

.page-head .kicker {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin: 0 0 12px;
}

.page-head h1 {
  font-size: clamp(26px, 4vw, 38px);
  margin: 0 0 14px;
  line-height: 1.3;
  font-weight: 700;
}

.page-head p {
  margin: 0;
  color: var(--ink-3);
  max-width: 680px;
  font-size: 15px;
}

/* ---------- 提示条 ---------- */
.notice {
  background: var(--bg-tint);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: 13px;
  color: var(--ink-3);
  line-height: 1.8;
}

.notice strong { color: var(--ink); }

/* ---------- 服务详情页 ---------- */
#svc-detail { padding-top: 40px; }

.svc-detail-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 56px;
  align-items: start;
}

.svc-detail-h {
  font-size: 15px;
  letter-spacing: 0.02em;
  font-weight: 700;
  margin: 44px 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.svc-detail-h:first-child { margin-top: 0; }

.svc-main .longform { max-width: none; margin: 0; }
.svc-main .longform p { font-size: 15.5px; line-height: 1.95; }

.svc-detail-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
.svc-detail-list li {
  padding: 14px 0 14px 26px;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-2);
  position: relative;
}
.svc-detail-list li:last-child { border-bottom: none; }
.svc-detail-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 21px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink);
}

/* 侧栏卡片 */
.svc-side { position: sticky; top: calc(var(--header-h) + 24px); }
.side-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 22px;
  margin-bottom: 16px;
}
.side-card h4 {
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin: 0 0 14px;
  font-weight: 700;
}
.side-card ul { margin: 0; padding-left: 16px; }
.side-card ul li {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-2);
  margin-bottom: 9px;
}
.side-card ul li:last-child { margin-bottom: 0; }
.side-card ul li::marker { color: var(--ink-4); }

.side-red { border-color: var(--line-2); }
.side-red ul li { color: var(--ink-3); }

.side-cta { text-align: center; background: var(--bg-soft); }
.side-cta p { font-size: 13.5px; color: var(--ink-2); margin: 0 0 14px; line-height: 1.7; }

/* 上一项 / 下一项 */
.svc-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: 64px;
}
.svc-pager a, .svc-pager span {
  background: var(--bg);
  padding: 22px 24px;
  text-decoration: none;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.svc-pager a:hover { background: var(--bg-soft); }
.svc-pager .pager-next { text-align: right; }
.svc-pager span { color: var(--ink-3); font-size: 15px; }
.svc-pager a span { font-size: 11.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-4); }

/* 服务卡片可点击跳详情 */
a.card { text-decoration: none; color: inherit; transition: background .18s ease; }
a.card:hover { background: var(--bg-soft); }
a.card:hover h3 { text-decoration: underline; }

/* ---------- 交付样例：真实图片卡 ---------- */
.sample-item {
  margin: 0;
  background: var(--bg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.sample-item img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--bg-tint);
}
.sample-item figcaption {
  padding: 13px 18px;
  font-size: 13px;
  color: var(--ink-3);
  letter-spacing: 0.02em;
}

/* ---------- 套餐页 ---------- */
.pkg-note {
  text-align: center;
  font-size: 14px;
  color: var(--ink-3);
  margin: 0 0 22px;
}
.pkg-note a { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }

.anchor-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin: 0 0 10px;
}
.anchor-bar a {
  font-size: 13px;
  padding: 7px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  text-decoration: none;
  color: var(--ink-2);
  transition: border-color .18s ease, color .18s ease;
}
.anchor-bar a:hover { border-color: var(--ink); color: var(--ink); }

.pkg-mod { margin-top: 64px; }
.pkg-mod:first-of-type { margin-top: 36px; }

.pkg-h2 {
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 700;
  margin: 0 0 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.pkg-tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--ink);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 12px;
  letter-spacing: 0.04em;
}

.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  -webkit-overflow-scrolling: touch;
}

.pkg {
  width: 100%;
  border-collapse: collapse;
  min-width: 660px;
}
.pkg th {
  background: var(--bg-soft);
  font-size: 13px;
  font-weight: 700;
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  letter-spacing: 0.03em;
  white-space: nowrap;
}
.pkg th + th { border-left: 1px solid var(--line); }
.pkg td {
  font-size: 13.5px;
  line-height: 1.7;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-2);
  vertical-align: top;
}
.pkg td + td { border-left: 1px solid var(--line); }
.pkg tr:last-child td { border-bottom: none; }
.pkg .item-col { width: 190px; color: var(--ink); font-weight: 600; }
.pkg .tier-col { text-align: left; }
.pkg .c-yes { background: var(--bg-soft); color: var(--ink); font-weight: 700; text-align: center; }
.pkg .c-no { color: var(--ink-4); text-align: center; }

.pkg-band td {
  background: var(--bg-tint);
  color: var(--ink);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.04em;
  padding: 9px 16px;
}
.pkg-band.mod td {
  background: var(--bg-soft);
  font-size: 14px;
  padding: 12px 16px;
}
.pkg-band.sub td {
  background: var(--bg);
  color: var(--ink-3);
  font-weight: 600;
  font-size: 12.5px;
  padding: 8px 16px;
  letter-spacing: 0.06em;
}
.pkg tr[id] { scroll-margin-top: calc(var(--header-h) + 16px); }

.terms-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
}
.terms-list li {
  padding: 15px 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-2);
  border-bottom: 1px solid var(--line);
}
.terms-list li:last-child { border-bottom: none; }
.terms-list li strong { color: var(--ink); }

.pkg-foot {
  margin-top: 56px;
  text-align: center;
  font-size: 13.5px;
  color: var(--ink-3);
  line-height: 1.9;
}
.pkg-foot .btn { margin-top: 18px; }

/* ---------- FAQ 页 ---------- */
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item { padding: 26px 0; border-bottom: 1px solid var(--line); }
.faq-item:first-child { padding-top: 0; }
.faq-item h3 {
  font-size: clamp(15.5px, 1.7vw, 17.5px);
  font-weight: 700;
  margin: 0 0 12px;
  line-height: 1.6;
  display: flex;
  gap: 10px;
}
.faq-item h3 .q-mark {
  color: var(--ink-4);
  font-weight: 600;
  flex-shrink: 0;
}
.faq-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--ink-2);
}
.faq-item p a { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .grid.col-3 { grid-template-columns: repeat(2, 1fr); }
  .grid.col-4 { grid-template-columns: repeat(2, 1fr); }
  .prod-grid  { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .svc-row { grid-template-columns: 40px 1fr; gap: 18px; }
  .svc-row .meta { grid-column: 2; text-align: left; }
  .svc-detail-grid { grid-template-columns: 1fr; gap: 24px; }
  .svc-side { position: static; }
  .nav { gap: 18px; }
  .nav a { font-size: 13px; }
}

@media (max-width: 640px) {
  /* 移动端页头折成两行，实测约 118px；JS 会再动态校准 */
  :root { --header-h: 118px; }
  section { padding: 52px 0; }
  .hero { padding: 40px 0; }
  .grid.col-2,
  .grid.col-3,
  .grid.col-4 { grid-template-columns: 1fr; }
  .prod-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .site-header .wrap { height: auto; flex-wrap: wrap; padding-top: 12px; padding-bottom: 12px; gap: 12px; }
  .nav { order: 3; flex: none; width: 100%; justify-content: flex-start; overflow-x: auto; padding-bottom: 4px; gap: 20px; }
  .nav a { font-size: 13px; }
}

/* 矮屏（横屏手机 / 小笔记本）避免开屏页内容被挤 */
@media (max-height: 560px) {
  .hero { min-height: calc(100vh - var(--header-h)); padding: 32px 0; }
  .hero h1 { margin-bottom: 18px; }
}

/* ---------- 打印 ---------- */
@media print {
  .site-header, .lang-toggle, .form { display: none; }
  .hero { min-height: auto; padding: 24px 0; }
  section { padding: 24px 0; break-inside: avoid; }
  .ph { border-color: #bbb; }
}