@charset "UTF-8";
/*
Theme Name: RV Timeline 竖向时间轴
Theme URI: about:blank
Author: Revive Templates
Description: 时间轴风：一条竖线串起全部内容，日期为节点、卡片为事件。靛蓝+浅灰、8px 圆角、柔和投影。适合品牌历程、行业观察、持续更新的内容站。
Version: 1.0.0
Requires at least: 5.6
Tested up to: 6.6
Requires PHP: 7.4
License: GNU General Public License v2 or later
Text Domain: rv-timeline
Tags: business, timeline, editorial, clean
*/

:root {
  --rv-primary: #243b6b;
  --rv-primary-dark: #1a2c51;
  --rv-accent: #243b6b;
  --rv-text: #1c2433;
  --rv-text-2: #55607a;
  --rv-text-3: #8791a6;
  --rv-line: #d9dfe9;
  --rv-line-2: #e6ebf3;
  --rv-bg: #eef1f6;
  --rv-bg-2: #e6eaf2;
  --rv-bg-3: #dde3ee;
  --rv-container: 1140px;

  --tl-indigo: #243b6b;
  --tl-indigo-2: #3a5795;
  --tl-bg: #eef1f6;
  --tl-card: #ffffff;
  --tl-line: #d9dfe9;
  --tl-text: #1c2433;
  --tl-text-2: #55607a;
  --tl-text-3: #8791a6;

  --tl-s1: 4px;
  --tl-s2: 8px;
  --tl-s3: 12px;
  --tl-s4: 16px;
  --tl-s5: 24px;
  --tl-s6: 32px;
  --tl-s7: 48px;
  --tl-s8: 64px;

  --tl-radius: 8px;
  --tl-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --tl-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --tl-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --tl-ease: cubic-bezier(.2, 0, 0, 1);
  --tl-dur: 240ms;
  --tl-shadow: 0 1px 2px rgba(28, 36, 51, .04), 0 8px 24px rgba(28, 36, 51, .05);
}

.tl-wrap { max-width: var(--rv-container); margin: 0 auto; padding: 0 26px; }
.tl-shell { background: var(--tl-bg); color: var(--tl-text); }
body { background: var(--rv-bg); }

/* ================= 顶部 ================= */
.tl-top {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  height: 44px; border-bottom: 1px solid var(--tl-line);
  font-family: var(--tl-mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--tl-text-3);
}
.tl-top b { color: var(--tl-indigo); font-weight: 600; }

.tl-header { background: rgba(255,255,255,.72); border-bottom: 1px solid var(--tl-line); }
.tl-header-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; min-height: 76px; }
.tl-brand { display: flex; align-items: baseline; gap: 12px; }
.tl-brand a { font-size: 24px; font-weight: 700; letter-spacing: -.02em; color: var(--tl-indigo); }
.tl-brand span { font-family: var(--tl-mono); font-size: 10px; letter-spacing: .18em; text-transform: uppercase; color: var(--tl-text-3); }
.tl-nav { display: flex; gap: 24px; flex-wrap: wrap; }
.tl-nav a { font-size: 14px; color: var(--tl-text-2); padding: 6px 0; border-bottom: 2px solid transparent; transition: color var(--tl-dur) var(--tl-ease), border-color var(--tl-dur) var(--tl-ease); }
.tl-nav a:hover { color: var(--tl-indigo); border-bottom-color: var(--tl-indigo); }

/* ================= 头部介绍 ================= */
.tl-hero { padding: 52px 0 34px; }
.tl-hero h1 { max-width: 20em; font-size: clamp(28px, 3.8vw, 44px); line-height: 1.24; letter-spacing: -.02em; font-weight: 700; color: var(--tl-indigo); text-wrap: balance; }
.tl-hero p { margin-top: 16px; max-width: 40em; font-size: 15.5px; line-height: 1.9; color: var(--tl-text-2); }
.tl-hero-stats { display: flex; gap: 40px; margin-top: 26px; }
.tl-hero-stats b { display: block; font-family: var(--tl-serif); font-size: 30px; line-height: 1; color: var(--tl-indigo); }
.tl-hero-stats span { display: block; margin-top: 7px; font-size: 12px; letter-spacing: .06em; color: var(--tl-text-3); }

/* ================= 时间轴 ================= */
.tl-feed { position: relative; padding: 10px 0 20px; }
.tl-feed::before {
  content: ""; position: absolute; left: 152px; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(to bottom, transparent, var(--tl-line) 4%, var(--tl-line) 96%, transparent);
}
.tl-year {
  position: relative; display: flex; align-items: center; gap: 14px;
  margin: 26px 0 18px; padding-left: 0;
  font-family: var(--tl-mono); font-size: 12px; letter-spacing: .18em; color: var(--tl-indigo);
}
.tl-year::before {
  content: ""; position: absolute; left: 148px; width: 10px; height: 10px; border-radius: 50%;
  background: var(--tl-indigo); box-shadow: 0 0 0 4px var(--tl-bg);
}
.tl-year span { padding-left: 176px; }

.tl-item { position: relative; display: grid; grid-template-columns: 152px 1fr; gap: 44px; padding: 16px 0; }
.tl-date { padding-top: 6px; text-align: right; }
.tl-date b { display: block; font-family: var(--tl-mono); font-size: 18px; letter-spacing: .02em; color: var(--tl-indigo); }
.tl-date span { display: block; margin-top: 4px; font-size: 11.5px; color: var(--tl-text-3); }
.tl-item::before {
  content: ""; position: absolute; left: 148px; top: 30px; width: 10px; height: 10px; border-radius: 50%;
  background: #fff; border: 2px solid var(--tl-indigo-2); box-shadow: 0 0 0 4px var(--tl-bg);
}
.tl-card {
  display: grid; grid-template-columns: 1fr 200px; gap: 24px;
  background: var(--tl-card); border-radius: var(--tl-radius); box-shadow: var(--tl-shadow);
  padding: 24px 26px; transition: box-shadow var(--tl-dur) var(--tl-ease), transform var(--tl-dur) var(--tl-ease);
}
.tl-card:hover { transform: translateY(-2px); box-shadow: 0 2px 4px rgba(28,36,51,.05), 0 14px 34px rgba(28,36,51,.09); }
.tl-card--text { grid-template-columns: 1fr; }
.tl-cat { display: inline-block; padding: 3px 9px; border-radius: 999px; background: #e9eefa; color: var(--tl-indigo); font-size: 11.5px; }
.tl-card h2 { margin: 12px 0 9px; font-size: 21px; line-height: 1.5; letter-spacing: -.01em; font-weight: 600; }
.tl-card h2 a { color: var(--tl-text); }
.tl-card h2 a:hover { color: var(--tl-indigo); }
.tl-card p { font-size: 13.5px; line-height: 1.8; color: var(--tl-text-2); }
.tl-card-meta { margin-top: 12px; font-family: var(--tl-mono); font-size: 11px; color: var(--tl-text-3); }
.tl-thumb { border-radius: var(--tl-radius); overflow: hidden; background: var(--tl-bg); align-self: start; }
.tl-thumb img { width: 100%; height: 132px; object-fit: cover; display: block; transition: transform 600ms var(--tl-ease); }
.tl-card:hover .tl-thumb img { transform: scale(1.04); }

.tl-more { display: flex; justify-content: center; padding: 30px 0 60px; }
.tl-more a {
  display: inline-flex; align-items: center; gap: 8px; padding: 11px 22px; border-radius: 999px;
  background: var(--tl-indigo); color: #fff; font-size: 14px;
  transition: background var(--tl-dur) var(--tl-ease);
}
.tl-more a:hover { background: var(--tl-indigo-2); }

/* 分页 */
.tl-pager { display: flex; justify-content: center; gap: 6px; padding: 26px 0 56px; font-family: var(--tl-mono); font-size: 12px; }
.tl-pager a, .tl-pager span {
  min-width: 34px; height: 34px; display: inline-flex; align-items: center; justify-content: center;
  padding: 0 10px; border-radius: var(--tl-radius); background: #fff; color: var(--tl-text-2); box-shadow: var(--tl-shadow);
}
.tl-pager .current { background: var(--tl-indigo); color: #fff; }
.tl-pager a:hover { color: var(--tl-indigo); }

/* ================= 页脚 ================= */
.tl-foot { background: var(--tl-indigo); color: #dfe6f3; padding: 36px 0 44px; }
.tl-foot-top { display: flex; justify-content: space-between; gap: 24px; align-items: flex-start; flex-wrap: wrap; }
.tl-foot-brand { font-size: 20px; font-weight: 700; color: #fff; }
.tl-foot-brand span { display: block; margin-top: 6px; font-family: var(--tl-mono); font-size: 10px; letter-spacing: .16em; color: #9fb0d0; }
.tl-foot-links { display: flex; gap: 20px; flex-wrap: wrap; font-size: 13.5px; }
.tl-foot-links a { color: #dfe6f3; }
.tl-foot-links a:hover { color: #fff; }
.tl-foot-copy { display: flex; justify-content: space-between; margin-top: 26px; padding-top: 14px; border-top: 1px solid rgba(255,255,255,.16); font-family: var(--tl-mono); font-size: 10.5px; color: #9fb0d0; }

/* ================= 文章页 ================= */
.tl-post-shell { padding-top: 30px; padding-bottom: 20px; }
.tl-post { position: relative; max-width: 780px; margin: 0 auto; padding-left: 34px; }
.tl-post::before { content: ""; position: absolute; left: 9px; top: 8px; bottom: 8px; width: 2px; background: var(--tl-line); }
.tl-post::after { content: ""; position: absolute; left: 4px; top: 0; width: 12px; height: 12px; border-radius: 50%; background: var(--tl-indigo); box-shadow: 0 0 0 4px var(--tl-bg); }
.tl-crumb { display: flex; gap: 8px; margin-bottom: 22px; font-family: var(--tl-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--tl-text-3); }
.tl-crumb a { color: var(--tl-text-3); }
.tl-crumb a:hover { color: var(--tl-indigo); }
.tl-post-head h1 { font-size: clamp(28px, 3.8vw, 42px); line-height: 1.3; letter-spacing: -.02em; font-weight: 700; color: var(--tl-indigo); text-wrap: balance; }
.tl-post-meta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 16px; padding-bottom: 18px; border-bottom: 1px solid var(--tl-line); font-family: var(--tl-mono); font-size: 11px; color: var(--tl-text-3); }
.tl-post-cover { margin: 28px 0 4px; border-radius: var(--tl-radius); overflow: hidden; }
.tl-post-cover img { width: 100%; display: block; }

.tl-prose { margin-top: 30px; font-size: 16.5px; line-height: 2.0; color: #232a38; }
.tl-prose p { margin: 0 0 1.05em; }
.tl-prose h2 { margin: 40px 0 14px; font-size: 25px; line-height: 1.35; font-weight: 700; color: var(--tl-indigo); }
.tl-prose h3 { margin: 30px 0 10px; font-size: 19px; font-weight: 700; }
.tl-prose a { color: var(--tl-indigo); border-bottom: 1px solid rgba(36,59,107,.3); }
.tl-prose img { margin: 24px 0; border-radius: var(--tl-radius); }
.tl-prose ul, .tl-prose ol { margin: 0 0 1.2em 1.3em; }
.tl-prose li { list-style: disc; margin-bottom: .45em; }
.tl-prose ol li { list-style: decimal; }
.tl-prose blockquote { margin: 28px 0; padding: 16px 20px; background: #fff; border-left: 4px solid var(--tl-indigo); border-radius: var(--tl-radius); color: var(--tl-text-2); }
.tl-prose table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 14px; }
.tl-prose th, .tl-prose td { border: 1px solid var(--tl-line); padding: 9px 12px; }
.tl-prose th { background: #fff; text-align: left; }

.tl-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 34px; }
.tl-tags a { padding: 5px 12px; border-radius: 999px; background: #fff; color: var(--tl-text-2); font-size: 12.5px; box-shadow: var(--tl-shadow); }
.tl-tags a:hover { color: var(--tl-indigo); }

.tl-pn { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 36px; }
.tl-pn a { padding: 16px 18px; border-radius: var(--tl-radius); background: #fff; box-shadow: var(--tl-shadow); }
.tl-pn a:hover { color: var(--tl-indigo); }
.tl-pn span { display: block; margin-bottom: 6px; font-family: var(--tl-mono); font-size: 10px; letter-spacing: .14em; color: var(--tl-text-3); }
.tl-pn b { font-size: 15px; font-weight: 600; line-height: 1.55; }
.tl-pn .is-next { text-align: right; }

.tl-related { margin-top: 48px; }
.tl-related h2 { font-family: var(--tl-mono); font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--tl-text-3); margin-bottom: 16px; }
.tl-related-list { display: grid; gap: 10px; }
.tl-related-list a { display: flex; justify-content: space-between; gap: 16px; padding: 13px 16px; border-radius: var(--tl-radius); background: #fff; box-shadow: var(--tl-shadow); font-size: 14.5px; }
.tl-related-list a:hover { color: var(--tl-indigo); }
.tl-related-list span { font-family: var(--tl-mono); font-size: 11px; color: var(--tl-text-3); white-space: nowrap; }

/* ================= 内页：归档 / 404 ================= */
.tl-arch-head { padding: 38px 0 22px; }
.tl-arch-head h1 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.2; letter-spacing: -.02em; color: var(--tl-indigo); font-weight: 700; }
.tl-arch-meta { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 10px; font-size: 13.5px; color: var(--tl-text-2); }
.tl-empty { max-width: 560px; padding: 60px 0 90px; }
.tl-empty h2 { font-size: 24px; color: var(--tl-indigo); }
.tl-empty p { margin: 10px 0 18px; color: var(--tl-text-2); }
.tl-empty a { display: inline-block; padding: 10px 18px; border-radius: var(--tl-radius); background: var(--tl-indigo); color: #fff; font-size: 14px; }
.tl-404 { max-width: 620px; padding: 70px 0 100px; }
.tl-404-code { font-family: var(--tl-serif); font-size: 110px; line-height: .9; color: var(--tl-indigo); letter-spacing: -.04em; }
.tl-404 h1 { margin-top: 10px; font-size: 30px; color: var(--tl-indigo); }
.tl-404 p { margin: 12px 0 22px; color: var(--tl-text-2); }
.tl-404-btn { display: inline-block; padding: 10px 18px; border-radius: var(--tl-radius); background: var(--tl-indigo); color: #fff; font-size: 14px; }
.tl-404-cats { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; font-size: 13px; }
.tl-404-cats a { padding: 6px 13px; border-radius: 999px; background: #fff; color: var(--tl-text-2); box-shadow: var(--tl-shadow); }

/* ================= 响应式 ================= */
@media (max-width: 860px) {
  .tl-feed::before { left: 104px; }
  .tl-item { grid-template-columns: 104px 1fr; gap: 30px; }
  .tl-item::before { left: 100px; }
  .tl-year::before { left: 100px; }
  .tl-year span { padding-left: 128px; }
  .tl-card { grid-template-columns: 1fr 150px; gap: 16px; padding: 20px; }
}
@media (max-width: 640px) {
  .tl-wrap { padding: 0 18px; }
  .tl-header-inner { flex-direction: column; align-items: flex-start; gap: 10px; padding-top: 14px; padding-bottom: 14px; min-height: 0; }
  .tl-nav { gap: 14px; }
  .tl-hero { padding: 32px 0 22px; }
  .tl-hero h1 { font-size: 26px; }
  .tl-hero-stats { gap: 24px; }
  .tl-feed::before { left: 5px; }
  .tl-year { margin: 18px 0 10px; }
  .tl-year::before { left: 1px; }
  .tl-year span { padding-left: 26px; }
  .tl-item { grid-template-columns: 1fr; gap: 8px; padding: 12px 0 12px 26px; }
  .tl-item::before { left: 1px; top: 18px; }
  .tl-date { text-align: left; padding-top: 0; display: flex; gap: 8px; align-items: baseline; }
  .tl-date b { font-size: 13px; }
  .tl-card { grid-template-columns: 1fr; padding: 18px; }
  .tl-thumb { order: -1; }
  .tl-thumb img { height: 160px; }
  .tl-post { padding-left: 24px; }
  .tl-post::before { left: 5px; }
  .tl-post::after { left: 0; }
  .tl-pn { grid-template-columns: 1fr; }
  .tl-pn .is-next { text-align: left; }
}