/*
Theme Name: ShopifyKnow
Theme URI: https://shopifyknow.com
Author: ShopifyKnow
Description: 面向中国个人卖家的 Shopify 独立站决策与实操主题。
Version: 3.2.0
Requires at least: 6.4
Tested up to: 6.8
Requires PHP: 7.4
Text Domain: shopifyknow
*/

:root {
  --sk-blue: #12355b;
  --sk-blue-bright: #12355b;
  --sk-blue-dark: #092540;
  --sk-blue-soft: #eef3f7;
  --sk-ink: #111318;
  --sk-text: #525866;
  --sk-muted: #7a808b;
  --sk-line: #e2e3e5;
  --sk-surface: #f7f7f5;
  --sk-white: #fff;
  /* Compatibility aliases keep older components monochrome. */
  --sk-orange: #12355b;
  --sk-orange-bright: #12355b;
  --sk-orange-soft: #eef3f7;
  --sk-success: #12355b;
  --sk-green: #12355b;
  --sk-green-soft: #eef3f7;
  --sk-warning: #12355b;
  --sk-warning-soft: #f2f3f4;
  --sk-radius-sm: 10px;
  --sk-radius: 18px;
  --sk-radius-lg: 24px;
  --sk-shadow: 0 16px 40px rgba(15, 23, 42, .08);
  --sk-width: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--sk-text);
  background: var(--sk-white);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  word-break: normal;
  overflow-wrap: break-word;
}
h1, h2, h3, h4 { text-wrap: balance; }
p, li { text-wrap: pretty; }
body.admin-bar .site-header { top: 32px; }
a { color: var(--sk-blue); text-decoration: none; }
a:hover { color: var(--sk-blue-dark); }
img { display: block; max-width: 100%; height: auto; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.screen-reader-text {
  position: absolute !important;
  width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link:focus {
  z-index: 99999; top: 8px; left: 8px; width: auto; height: auto;
  padding: 10px 14px; clip: auto; background: var(--sk-white); color: var(--sk-ink);
}
.sk-container { width: min(calc(100% - 40px), var(--sk-width)); margin-inline: auto; }
.sk-section { padding: 80px 0; }
.sk-section-muted { background: var(--sk-surface); }
.sk-eyebrow { margin: 0 0 10px; color: var(--sk-blue); font-size: 13px; font-weight: 800; letter-spacing: .11em; text-transform: uppercase; }
.sk-section h2 { margin: 0; color: var(--sk-ink); font-size: clamp(30px, 3.6vw, 42px); line-height: 1.2; letter-spacing: -.035em; }
.sk-section-intro { max-width: 650px; margin: 12px 0 0; color: var(--sk-muted); font-size: 17px; }

/* Header */
.site-header {
  position: sticky; z-index: 1000; top: 0;
  border-bottom: 1px solid rgba(226, 227, 229, .94);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(16px);
}
.sk-nav-wrap { min-height: 74px; display: flex; align-items: center; gap: 32px; }
.site-branding { margin-right: auto; }
.site-branding a { display: flex; align-items: center; gap: 10px; color: var(--sk-ink); }
.custom-logo { max-height: 38px; width: auto; }
.sk-brand-mark {
  width: 34px; height: 34px; display: grid; place-items: center;
  border-radius: 10px; color: var(--sk-white); background: var(--sk-blue);
  font-size: 18px; font-weight: 900; box-shadow: 0 8px 18px rgba(18, 53, 91, .2);
}
.sk-brand-name { font-size: 20px; font-weight: 850; letter-spacing: -.035em; }
.primary-menu { display: flex; align-items: center; gap: 28px; margin: 0; padding: 0; list-style: none; }
.primary-menu a { color: var(--sk-text); font-size: 15px; font-weight: 650; }
.primary-menu a:hover, .primary-menu .current-menu-item > a { color: var(--sk-blue); }
.sk-header-cta, .sk-button {
  display: inline-flex; min-height: 46px; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 20px; border: 1px solid var(--sk-blue); border-radius: 999px;
  color: var(--sk-white); background: var(--sk-blue); font-weight: 750; line-height: 1.2;
  box-shadow: 0 8px 20px rgba(18, 53, 91, .16); transition: .2s ease;
}
.sk-header-cta:hover, .sk-button:hover { color: var(--sk-white); background: var(--sk-blue-dark); border-color: var(--sk-blue-dark); transform: translateY(-1px); }
.sk-header-cta { border-color: var(--sk-blue); background: var(--sk-blue); box-shadow: 0 8px 20px rgba(18, 53, 91, .18); }
.sk-header-cta:hover { background: var(--sk-blue-dark); border-color: var(--sk-blue-dark); }
.sk-button-secondary { color: var(--sk-ink); background: var(--sk-white); border-color: var(--sk-line); box-shadow: none; }
.sk-button-secondary:hover { color: var(--sk-blue); background: var(--sk-blue-soft); border-color: #aebdca; }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 10px; border: 0; border-radius: 10px; background: var(--sk-surface); }
.menu-toggle span { display: block; width: 22px; height: 2px; margin: 5px 0; border-radius: 2px; background: var(--sk-ink); }

/* Posts */
.sk-post-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.sk-post-card { position: relative; min-width: 0; min-height: 300px; display: flex; overflow: hidden; border: 1px solid var(--sk-line); border-radius: var(--sk-radius); background: var(--sk-white); box-shadow: 0 10px 30px rgba(15,23,42,.05); transition: .22s ease; }
.sk-post-card::before { content: ""; position: absolute; z-index: 1; top: 0; left: 0; width: 72px; height: 3px; border-radius: 0 3px 3px 0; background: var(--sk-blue); transition: width .22s ease; }
.sk-post-card:hover { border-color: #aebdca; box-shadow: 0 18px 42px rgba(18,53,91,.09); transform: translateY(-4px); }
.sk-post-card:hover::before { width: 100%; }
.sk-post-card-link { width: 100%; display: flex; flex: 1; color: var(--sk-text); }
.sk-post-card-link:hover { color: var(--sk-text); }
.sk-post-body { width: 100%; display: flex; flex-direction: column; padding: 28px; }
.sk-post-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin-bottom: 18px; color: var(--sk-muted); font-size: 12px; }
.sk-post-category { display: inline-flex; align-items: center; min-height: 27px; padding: 4px 9px; border-radius: 999px; color: var(--sk-blue); background: var(--sk-blue-soft); font-weight: 800; }
.sk-post-card h3 { margin: 0; color: var(--sk-ink); font-size: 21px; line-height: 1.45; letter-spacing: -.018em; }
.sk-post-excerpt { margin: 13px 0 24px; color: var(--sk-muted); font-size: 14px; line-height: 1.75; }
.sk-post-action { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding-top: 16px; border-top: 1px solid var(--sk-line); color: var(--sk-blue); font-size: 13px; font-weight: 800; }
.sk-post-action span { transition: transform .2s ease; }
.sk-post-card:hover .sk-post-action span { transform: translateX(4px); }
.sk-post-grid .sk-post-card:nth-child(3n+2)::before { background: var(--sk-blue); }
.sk-post-grid .sk-post-card:nth-child(3n+2) .sk-post-category { color: var(--sk-blue); background: var(--sk-blue-soft); }
.sk-post-grid .sk-post-card:nth-child(3n+2) .sk-post-action { color: var(--sk-blue); }
.sk-empty-posts { grid-column: 1/-1; padding: 38px; border: 1px dashed #aebdca; border-radius: var(--sk-radius); background: var(--sk-blue-soft); text-align: center; }
.sk-empty-posts strong { display: block; margin-bottom: 6px; color: var(--sk-ink); font-size: 19px; }

/* Content templates */
.sk-page-header { padding: 74px 0 46px; border-bottom: 1px solid var(--sk-line); background: var(--sk-surface); }
.sk-page-header h1 { max-width: 820px; margin: 0; color: var(--sk-ink); font-size: clamp(36px, 5vw, 58px); line-height: 1.15; letter-spacing: -.04em; }
.sk-breadcrumbs { margin-bottom: 16px; color: var(--sk-muted); font-size: 14px; }
.sk-content-wrap { width: min(calc(100% - 40px), 820px); margin: 0 auto; padding: 64px 0 88px; }
.entry-content { color: var(--sk-text); font-size: 17px; }
.entry-content > * { max-width: 100%; }
.entry-content h2, .entry-content h3, .entry-content h4 { color: var(--sk-ink); line-height: 1.28; }
.entry-content h2 { margin: 2.1em 0 .7em; font-size: 32px; }
.entry-content h3 { margin: 1.8em 0 .6em; font-size: 24px; }
.entry-content p, .entry-content ul, .entry-content ol { margin: 0 0 1.35em; }
.entry-content img { border-radius: var(--sk-radius-sm); }
.entry-content blockquote { margin: 2em 0; padding: 20px 24px; border-left: 4px solid var(--sk-blue); border-radius: 0 var(--sk-radius-sm) var(--sk-radius-sm) 0; background: var(--sk-blue-soft); color: var(--sk-ink); }
.entry-content table { width: 100%; border-collapse: collapse; margin: 2em 0; font-size: 15px; }
.entry-content th, .entry-content td { padding: 13px 14px; border: 1px solid var(--sk-line); text-align: left; }
.entry-content th { color: var(--sk-ink); background: var(--sk-surface); }

/* Gutenberg: full launch route page */
.entry-content > .sk-full-route {
  width: min(calc(100vw - 40px), 1080px);
  max-width: none;
  margin-left: 50%;
  transform: translateX(-50%);
}
.sk-full-route { color: var(--sk-text); }
.sk-full-route-intro {
  position: relative;
  overflow: hidden;
  margin-bottom: 28px;
  padding: 42px;
  border: 1px solid var(--sk-line);
  border-radius: var(--sk-radius-lg);
  background: linear-gradient(145deg, var(--sk-blue-soft), #fff);
  box-shadow: var(--sk-shadow);
}
.sk-full-route-intro::after {
  content: "";
  position: absolute;
  right: -85px;
  top: -125px;
  width: 280px;
  height: 280px;
  border: 1px solid rgba(18, 53, 91, .12);
  border-radius: 50%;
  box-shadow: 0 0 0 45px rgba(18, 53, 91, .022), 0 0 0 90px rgba(18, 53, 91, .014);
  pointer-events: none;
}
.sk-full-route-eyebrow {
  position: relative;
  z-index: 1;
  margin: 0 0 9px !important;
  color: var(--sk-blue);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: .13em;
}
.sk-full-route-intro h2,
.sk-full-route-finish h2 {
  position: relative;
  z-index: 1;
  margin: 0 0 14px;
  color: var(--sk-ink);
  font-size: clamp(30px, 4.4vw, 46px);
  line-height: 1.2;
  letter-spacing: -.035em;
}
.sk-full-route-lead {
  position: relative;
  z-index: 1;
  max-width: 790px;
  margin: 0 !important;
  color: var(--sk-muted);
  font-size: 17px;
  line-height: 1.85;
}
.sk-full-route-summary {
  position: relative;
  z-index: 1;
  display: grid !important;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 28px;
}
.sk-full-route-summary p {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 !important;
  padding: 12px 14px;
  border: 1px solid var(--sk-line);
  border-radius: 12px;
  background: rgba(255, 255, 255, .78);
  font-size: 13px;
}
.sk-full-route-summary strong { color: var(--sk-blue); }
.sk-full-route-summary span { color: var(--sk-muted); }
.sk-full-route-grid {
  display: flex !important;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 20px;
  padding: 24px;
  border: 1px solid var(--sk-line);
  border-radius: 26px;
  background-color: #f2f3f4;
  background-image: radial-gradient(rgba(18, 53, 91, .1) .8px, transparent .8px);
  background-size: 18px 18px;
}
.sk-full-route-grid > .sk-full-route-card { margin: 0 !important; }
.sk-full-route-card {
  position: relative;
  min-width: 0;
  min-height: 338px;
  width: calc(50% - 10px) !important;
  max-width: calc(50% - 10px) !important;
  flex: 0 0 calc(50% - 10px);
  display: flex;
  flex-direction: column;
  margin: 0 !important;
  padding: 26px;
  overflow: hidden;
  border: 1px solid var(--sk-line);
  border-radius: 19px;
  background: rgba(255, 255, 255, .97);
  box-shadow: 0 10px 28px rgba(17, 19, 24, .05);
}
.sk-full-route-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 34%;
  height: 3px;
  background: linear-gradient(90deg, var(--sk-blue), var(--sk-blue-bright));
}
.sk-full-route-card > * { width: 100%; }
.sk-full-route-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 18px !important;
}
.sk-full-route-label strong {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 3px solid #fff;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(145deg, var(--sk-blue-bright), var(--sk-blue-dark));
  box-shadow: 0 0 0 1px #aebdca, 0 8px 18px rgba(18, 53, 91, .16);
  font-size: 13px;
}
.sk-full-route-label span {
  color: var(--sk-muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .1em;
}
.sk-full-route-card h3 {
  margin: 0 0 10px;
  color: var(--sk-ink);
  font-size: 24px;
  line-height: 1.35;
  letter-spacing: -.025em;
}
.sk-full-route-card h3 + p {
  margin: 0 0 20px;
  color: var(--sk-muted);
  font-size: 15px;
  line-height: 1.75;
}
.sk-full-route-result {
  margin: 0 0 24px !important;
  padding: 12px 14px;
  border-radius: 10px;
  color: var(--sk-text);
  background: var(--sk-surface);
  font-size: 13px;
  line-height: 1.65;
}
.sk-full-route-result strong { color: var(--sk-ink); }
.sk-full-route-card .wp-block-buttons { margin-top: auto; }
.sk-full-route-card .wp-block-button { width: 100%; }
.sk-full-route-card .wp-block-button__link {
  width: 100%;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 9px 16px;
  border: 1px solid #aebdca;
  border-radius: 10px;
  color: var(--sk-blue);
  background: #fff;
  font-size: 14px;
  font-weight: 800;
  transition: .2s ease;
}
.sk-full-route-card .wp-block-button__link:hover {
  border-color: #7f94a8;
  color: #fff;
  background: var(--sk-blue);
  transform: translateY(-1px);
}
.sk-full-route-card-finish {
  border-color: var(--sk-blue);
  background: linear-gradient(145deg, var(--sk-ink), var(--sk-blue-dark));
  box-shadow: 0 15px 32px rgba(8, 63, 80, .2);
}
.sk-full-route-card-finish::before { width: 100%; background: #fff; }
.sk-full-route-card-finish .sk-full-route-label strong { color: var(--sk-blue-dark); background: #fff; }
.sk-full-route-card-finish .sk-full-route-label span { color: #cbd2da; }
.sk-full-route-card-finish h3 { color: #fff; }
.sk-full-route-card-finish h3 + p { color: #d6dbe1; }
.sk-full-route-card-finish .sk-full-route-result { color: #d6dbe1; background: rgba(255, 255, 255, .07); }
.sk-full-route-card-finish .sk-full-route-result strong { color: #fff; }
.sk-full-route-card-finish .wp-block-button__link { border-color: rgba(255, 255, 255, .35); color: #fff; background: rgba(255, 255, 255, .08); }
.sk-full-route-card-finish .wp-block-button__link:hover { color: var(--sk-blue-dark); background: #fff; }
.sk-full-route-finish {
  margin-top: 28px;
  padding: 36px 40px;
  border: 1px solid var(--sk-line);
  border-radius: var(--sk-radius-lg);
  background: var(--sk-blue-soft);
}
.sk-full-route-finish > p:not(.sk-full-route-eyebrow) { margin: 0 0 20px; color: var(--sk-muted); }
.sk-full-route-checklist {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 20px;
  margin: 0 !important;
  padding: 0 !important;
  list-style: none !important;
}
.sk-full-route-checklist li {
  position: relative;
  margin: 0 !important;
  padding: 12px 14px 12px 42px;
  border: 1px solid var(--sk-line);
  border-radius: 11px;
  color: var(--sk-ink);
  background: rgba(255, 255, 255, .7);
  font-size: 14px;
}
.sk-full-route-checklist li::before {
  content: "✓";
  position: absolute;
  left: 15px;
  color: var(--sk-blue);
  font-weight: 900;
}

/* Tutorials page: posts grouped by launch stage */
.sk-tutorials-hero .sk-eyebrow { margin-bottom: 8px; }
.sk-tutorials-hero h1 { max-width: 900px; }
.sk-tutorials-lead { max-width: 760px; margin: 16px 0 0; color: var(--sk-muted); font-size: 17px; line-height: 1.8; }
.sk-tutorials-wrap { padding: 54px 0 92px; }
.sk-tutorials-page-intro { width: min(100%, 820px); margin: 0 auto 34px; padding: 26px; border: 1px solid var(--sk-line); border-radius: var(--sk-radius); background: var(--sk-surface); }
.sk-stage-nav { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin-bottom: 34px; padding: 14px; border: 1px solid var(--sk-line); border-radius: 18px; background: var(--sk-blue-soft); }
.sk-stage-nav a { min-width: 0; display: flex; align-items: center; gap: 9px; padding: 11px 12px; border: 1px solid transparent; border-radius: 11px; color: var(--sk-text); background: rgba(255,255,255,.72); font-size: 13px; font-weight: 750; transition: .2s ease; }
.sk-stage-nav a:hover { border-color: #aebdca; color: var(--sk-blue); background: #fff; transform: translateY(-1px); }
.sk-stage-nav span { flex: 0 0 auto; width: 28px; height: 28px; display: grid; place-items: center; border-radius: 9px; color: #fff; background: var(--sk-blue); font-size: 10px; font-weight: 900; }
.sk-tutorial-stages { display: grid; gap: 22px; }
.sk-tutorial-stage { scroll-margin-top: 96px; display: grid; grid-template-columns: minmax(210px, .34fr) minmax(0, 1fr); gap: 34px; padding: 32px; border: 1px solid var(--sk-line); border-radius: 22px; background: #fff; box-shadow: 0 12px 34px rgba(17,19,24,.04); }
.sk-tutorial-stage:nth-child(even) { background: #fafafa; }
.sk-tutorial-stage-header { min-width: 0; }
.sk-tutorial-stage-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; }
.sk-tutorial-stage-top span { width: 44px; height: 44px; display: grid; place-items: center; border: 3px solid #fff; border-radius: 50%; color: #fff; background: var(--sk-blue); box-shadow: 0 0 0 1px #aebdca,0 8px 18px rgba(18,53,91,.16); font-size: 13px; font-weight: 900; }
.sk-tutorial-stage-top small { color: var(--sk-muted); font-size: 11px; font-weight: 800; letter-spacing: .08em; }
.sk-tutorial-stage h2 { margin: 0 0 10px; color: var(--sk-ink); font-size: 27px; line-height: 1.28; letter-spacing: -.025em; }
.sk-tutorial-stage-header > p { margin: 0; color: var(--sk-muted); font-size: 14px; line-height: 1.75; }
.sk-tutorial-stage-link { display: inline-flex; margin-top: 18px; color: var(--sk-blue); font-size: 13px; font-weight: 800; }
.sk-tutorial-stage-content { min-width: 0; }
.sk-tutorial-posts { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.sk-tutorial-posts .sk-post-card { min-height: 280px; }
.sk-tutorial-posts .sk-post-body { padding: 23px; }
.sk-tutorial-posts .sk-post-card:last-child:nth-child(odd) { grid-column: 1/-1; max-width: none; }
.sk-stage-empty { min-height: 220px; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 30px; border: 1px dashed #aebdca; border-radius: 16px; background: var(--sk-blue-soft); text-align: center; }
.sk-stage-empty::before { content: "＋"; width: 38px; height: 38px; display: grid; place-items: center; margin-bottom: 12px; border-radius: 50%; color: var(--sk-blue); background: #fff; font-size: 22px; font-weight: 500; }
.sk-stage-empty strong { color: var(--sk-ink); font-size: 17px; }
.sk-stage-empty span { max-width: 520px; margin-top: 7px; color: var(--sk-muted); font-size: 13px; line-height: 1.7; }
.sk-article-meta { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 18px; color: var(--sk-muted); font-size: 14px; }
.sk-archive-grid { padding: 64px 0 88px; }
.navigation.pagination { margin-top: 36px; }
.nav-links { display: flex; flex-wrap: wrap; gap: 8px; }
.page-numbers { min-width: 40px; height: 40px; display: grid; place-items: center; padding: 0 10px; border: 1px solid var(--sk-line); border-radius: 9px; }
.page-numbers.current { color: var(--sk-white); background: var(--sk-blue); border-color: var(--sk-blue); }

/* All articles directory */
.sk-directory-page { background: var(--sk-surface); }
.sk-directory-hero { padding: 64px 0 42px; border-bottom: 1px solid var(--sk-line); background: linear-gradient(180deg, #fff, var(--sk-surface)); }
.sk-directory-hero .sk-breadcrumbs { margin-bottom: 26px; }
.sk-directory-hero-copy { max-width: 830px; margin: 0 auto; text-align: center; }
.sk-directory-badge { display: inline-flex; margin-bottom: 16px; padding: 6px 12px; border: 1px solid #cbd5df; border-radius: 999px; color: var(--sk-blue); background: var(--sk-blue-soft); font-size: 11px; font-weight: 850; letter-spacing: .08em; }
.sk-directory-hero h1 { margin: 0; color: var(--sk-ink); font-size: clamp(40px, 5vw, 60px); line-height: 1.1; letter-spacing: -.045em; }
.sk-directory-hero-copy > p { max-width: 720px; margin: 18px auto 0; color: var(--sk-muted); font-size: 17px; line-height: 1.8; }
.sk-directory-quick-nav { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin-top: 36px; }
.sk-directory-quick-nav a { min-width: 0; display: flex; align-items: center; gap: 11px; padding: 13px 14px; border: 1px solid var(--sk-line); border-radius: 12px; color: var(--sk-text); background: rgba(255,255,255,.9); text-align: left; transition: .2s ease; }
.sk-directory-quick-nav a:hover { border-color: #aebdca; color: var(--sk-blue); box-shadow: 0 8px 22px rgba(18,53,91,.08); transform: translateY(-2px); }
.sk-directory-quick-nav span { flex: 0 0 auto; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 9px; color: #fff; background: var(--sk-blue); font-size: 10px; font-weight: 900; }
.sk-directory-quick-nav strong { min-width: 0; font-size: 12px; line-height: 1.4; }
.sk-directory-main { padding: 32px 0 92px; }
.sk-directory-guide { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 18px; padding: 22px; border: 1px solid var(--sk-line); border-radius: 18px; background: #fff; box-shadow: 0 12px 34px rgba(17,19,24,.035); }
.sk-directory-heading { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 16px; }
.sk-directory-heading-icon { flex: 0 0 auto; width: 38px; height: 38px; display: grid; place-items: center; border-radius: 11px; background: var(--sk-blue-soft); }
.sk-directory-heading h2 { margin: 0; color: var(--sk-ink); font-size: 20px; line-height: 1.35; }
.sk-directory-heading p { margin: 3px 0 0; color: var(--sk-muted); font-size: 13px; }
.sk-directory-problem-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.sk-directory-problem-grid a { min-width: 0; display: flex; align-items: center; gap: 12px; padding: 14px; border: 1px solid var(--sk-line); border-radius: 12px; color: var(--sk-text); background: #fafafa; }
.sk-directory-problem-grid a:hover { border-color: #aebdca; background: var(--sk-blue-soft); }
.sk-directory-problem-grid a > span { font-size: 20px; }
.sk-directory-problem-grid strong, .sk-directory-problem-grid small { display: block; }
.sk-directory-problem-grid strong { color: var(--sk-ink); font-size: 13px; line-height: 1.5; }
.sk-directory-problem-grid small { margin-top: 2px; color: var(--sk-muted); font-size: 11px; }
.sk-directory-note { padding: 18px; border: 1px solid var(--sk-line); border-radius: 13px; background: #f2f3f4; }
.sk-directory-note h3 { margin: 0 0 12px; color: var(--sk-ink); font-size: 15px; }
.sk-directory-note ul { margin: 0; padding: 0; list-style: none; }
.sk-directory-note li { color: var(--sk-text); font-size: 12px; line-height: 1.65; }
.sk-directory-note li + li { margin-top: 9px; }
.sk-directory-stage-bar { display: flex; flex-wrap: wrap; justify-content: center; gap: 9px; margin: 24px 0; padding: 12px; border-block: 1px solid var(--sk-line); background: #fff; }
.sk-directory-stage-bar a { padding: 7px 12px; border-radius: 999px; color: var(--sk-text); background: var(--sk-surface); font-size: 12px; font-weight: 750; }
.sk-directory-stage-bar a:hover { color: var(--sk-blue); background: var(--sk-blue-soft); }
.sk-directory-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.sk-directory-stats > div { display: grid; place-items: center; min-height: 128px; padding: 18px; border: 1px solid var(--sk-line); border-radius: 15px; background: #fff; text-align: center; }
.sk-directory-stats span { font-size: 21px; }
.sk-directory-stats strong { color: var(--sk-blue); font-size: 27px; line-height: 1.1; letter-spacing: -.025em; }
.sk-directory-stats small { color: var(--sk-muted); font-size: 12px; }
.sk-directory-stage-list { display: grid; gap: 74px; margin-top: 70px; }
.sk-directory-section { scroll-margin-top: 96px; }
.sk-directory-section-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 14px; }
.sk-directory-section-title { min-width: 0; display: flex; align-items: flex-start; gap: 13px; }
.sk-directory-section-title > span { flex: 0 0 auto; width: 42px; height: 42px; display: grid; place-items: center; border-radius: 12px; background: var(--sk-blue-soft); font-size: 20px; }
.sk-directory-section-title small { display: block; margin-bottom: 2px; color: var(--sk-blue); font-size: 11px; font-weight: 850; letter-spacing: .06em; }
.sk-directory-section h2 { margin: 0; color: var(--sk-ink); font-size: 25px; line-height: 1.3; letter-spacing: -.025em; }
.sk-directory-section-title p { max-width: 760px; margin: 5px 0 0; color: var(--sk-muted); font-size: 13px; line-height: 1.65; }
.sk-directory-section-count { flex: 0 0 auto; color: var(--sk-muted); font-size: 11px; font-weight: 750; }
.sk-directory-tip { margin-bottom: 14px; padding: 9px 13px; border: 1px solid var(--sk-line); border-radius: 9px; color: var(--sk-muted); background: rgba(255,255,255,.7); font-size: 11px; }
.sk-directory-card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.sk-directory-card { min-width: 0; display: flex; border: 1px solid var(--sk-line); border-radius: 14px; background: #fff; transition: .2s ease; }
.sk-directory-card:hover { border-color: #aebdca; box-shadow: 0 12px 28px rgba(18,53,91,.08); transform: translateY(-3px); }
.sk-directory-card > a { width: 100%; min-height: 216px; display: flex; flex-direction: column; padding: 19px; color: var(--sk-text); }
.sk-directory-card > a:hover { color: var(--sk-text); }
.sk-directory-card-meta { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 13px; color: var(--sk-muted); font-size: 10px; }
.sk-directory-card-meta span { padding: 3px 8px; border-radius: 999px; color: var(--sk-blue); background: var(--sk-blue-soft); font-weight: 800; }
.sk-directory-card h3 { margin: 0; color: var(--sk-ink); font-size: 17px; line-height: 1.45; letter-spacing: -.015em; }
.sk-directory-card p { margin: 9px 0 16px; color: var(--sk-muted); font-size: 12px; line-height: 1.7; }
.sk-directory-card > a > strong { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding-top: 12px; border-top: 1px solid var(--sk-line); color: var(--sk-blue); font-size: 11px; }
.sk-directory-card > a > strong span { transition: transform .2s ease; }
.sk-directory-card:hover > a > strong span { transform: translateX(3px); }
.sk-directory-empty { padding: 27px; border: 1px dashed #aebdca; border-radius: 13px; background: var(--sk-blue-soft); text-align: center; }
.sk-directory-empty strong, .sk-directory-empty span { display: block; }
.sk-directory-empty strong { color: var(--sk-ink); font-size: 15px; }
.sk-directory-empty span { margin-top: 5px; color: var(--sk-muted); font-size: 12px; }
.sk-directory-category-link { display: inline-flex; margin-top: 13px; color: var(--sk-blue); font-size: 11px; font-weight: 800; }
.sk-directory-section-other { padding-top: 34px; border-top: 1px solid var(--sk-line); }
.sk-directory-finish { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 20px; margin-top: 78px; padding: 28px 30px; border: 1px solid #cbd5df; border-radius: 18px; background: linear-gradient(135deg, var(--sk-blue-soft), #fff); }
.sk-directory-finish > span { font-size: 28px; }
.sk-directory-finish h2 { margin: 0; color: var(--sk-ink); font-size: 20px; }
.sk-directory-finish p { margin: 4px 0 0; color: var(--sk-muted); font-size: 13px; }

/* Unified Silicon palette for legacy route and directory surfaces. */
.sk-full-route-intro,
.sk-directory-hero {
  border-color: var(--sk-line);
  background: linear-gradient(145deg, var(--sk-blue-soft), #fff);
}
.sk-full-route-intro::after {
  border-color: rgba(18, 53, 91, .12);
  box-shadow: 0 0 0 45px rgba(18, 53, 91, .022), 0 0 0 90px rgba(18, 53, 91, .014);
}
.sk-full-route-summary p { border-color: var(--sk-line); }
.sk-full-route-grid {
  border-color: var(--sk-line);
  background-color: #f2f3f4;
  background-image: radial-gradient(rgba(18, 53, 91, .1) .8px, transparent .8px);
}
.sk-full-route-card,
.sk-tutorial-stage,
.sk-directory-card { border-color: var(--sk-line); box-shadow: 0 10px 28px rgba(15, 23, 42, .055); }
.sk-full-route-card::before { background: var(--sk-blue); }
.sk-full-route-card:nth-child(3n+2):not(.sk-full-route-card-finish)::before { background: var(--sk-blue); }
.sk-full-route-card:nth-child(3n+2):not(.sk-full-route-card-finish) .sk-full-route-label strong { background: var(--sk-blue); box-shadow: 0 0 0 1px #aebdca, 0 8px 18px rgba(18, 53, 91, .16); }
.sk-full-route-label strong,
.sk-tutorial-stage-top span { background: var(--sk-blue); box-shadow: 0 0 0 1px #aebdca, 0 8px 18px rgba(18, 53, 91, .16); }
.sk-full-route-card .wp-block-button__link { border-color: #aebdca; }
.sk-full-route-card .wp-block-button__link:hover { border-color: var(--sk-blue); }
.sk-full-route-card-finish { border-color: var(--sk-blue); background: linear-gradient(145deg, var(--sk-ink), var(--sk-blue-dark)); box-shadow: 0 15px 32px rgba(17, 19, 24, .18); }
.sk-full-route-card-finish::before { background: #fff; }
.sk-full-route-card-finish .sk-full-route-label strong { color: var(--sk-blue); }
.sk-full-route-card-finish .sk-full-route-label span { color: #cbd2da; }
.sk-full-route-card-finish h3 + p,
.sk-full-route-card-finish .sk-full-route-result { color: #d6dbe1; }
.sk-full-route-finish,
.sk-directory-finish { border-color: #cbd5df; background: linear-gradient(135deg, var(--sk-blue-soft), #fff); }
.sk-stage-nav { border-color: var(--sk-line); }
.sk-tutorial-stage:nth-child(even) { background: #fafafa; }
.sk-directory-page { background: var(--sk-surface); }
.sk-directory-card:hover { border-color: #aebdca; box-shadow: 0 12px 28px rgba(18, 53, 91, .08); }
.sk-directory-note { border-color: var(--sk-line); background: #f2f3f4; }
.site-footer { background: var(--sk-white); }

/* Footer */
.site-footer { border-top: 1px solid var(--sk-line); background: var(--sk-white); }
.sk-footer-main { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(190px, .4fr); gap: 80px; padding: 54px 0 40px; }
.sk-footer-main > :last-child { width: min(100%, 220px); justify-self: end; }
.sk-footer-about { max-width: 570px; }
.sk-footer-about p { margin: 10px 0 0; color: var(--sk-muted); font-size: 14px; line-height: 1.85; }
.sk-footer-title { margin: 0 0 14px; color: var(--sk-ink); font-size: 15px; }
.sk-footer-menu { margin: 0; padding: 0; list-style: none; }
.sk-footer-menu li { margin: 8px 0; }
.sk-footer-menu a { color: var(--sk-muted); font-size: 14px; }
.sk-footer-menu a:hover { color: var(--sk-blue); }
.sk-footer-bottom { display: flex; justify-content: space-between; gap: 24px; padding: 20px 0 30px; border-top: 1px solid var(--sk-line); color: var(--sk-muted); font-size: 13px; }

@media (max-width: 980px) {
  .sk-post-grid { grid-template-columns: repeat(2, 1fr); }
  .sk-post-card:last-child:nth-child(odd) { grid-column: 1/-1; max-width: calc(50% - 11px); }
  .sk-stage-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sk-tutorial-stage { grid-template-columns: 1fr; gap: 24px; }
  .sk-tutorial-stage-header { max-width: 620px; }
  .sk-directory-quick-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sk-directory-guide { grid-template-columns: 1fr; }
  .sk-directory-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sk-directory-card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sk-header-cta { display: none; }
  .menu-toggle { display: block; }
  .main-navigation { position: absolute; visibility: hidden; opacity: 0; pointer-events: none; top: calc(100% + 1px); left: 0; right: 0; padding: 0 20px 20px; background: var(--sk-white); transform: translateY(-8px); transition: .18s ease; }
  .main-navigation.is-open { visibility: visible; opacity: 1; pointer-events: auto; transform: translateY(0); }
  .primary-menu { width: min(100%, var(--sk-width)); display: block; margin: 0 auto; padding: 12px; border: 1px solid var(--sk-line); border-radius: 14px; box-shadow: var(--sk-shadow); }
  .primary-menu li + li { border-top: 1px solid var(--sk-line); }
  .primary-menu a { display: block; padding: 12px; }
}

@media (max-width: 700px) {
  body.admin-bar .site-header { top: 46px; }
  .sk-container, .sk-content-wrap { width: min(calc(100% - 28px), var(--sk-width)); }
  .sk-nav-wrap { min-height: 66px; }
  .sk-section { padding: 66px 0; }
  .sk-button { width: 100%; }
  .sk-post-grid { grid-template-columns: 1fr; }
  .sk-post-card:last-child:nth-child(odd) { grid-column: auto; max-width: none; }
  .sk-page-header { padding: 52px 0 34px; }
  .sk-content-wrap { padding: 44px 0 66px; }
  .entry-content { font-size: 16px; }
  .entry-content h2 { font-size: 27px; }
  .entry-content table { display: block; overflow-x: auto; }
  .entry-content > .sk-full-route { width: min(calc(100vw - 28px), 1080px); }
  .sk-full-route-intro { padding: 28px 22px; }
  .sk-full-route-summary { grid-template-columns: 1fr; }
  .sk-full-route-grid { padding: 14px; border-radius: 20px; }
  .sk-full-route-card { width: 100% !important; max-width: none !important; flex-basis: 100%; min-height: 0; padding: 22px; }
  .sk-full-route-finish { padding: 28px 22px; }
  .sk-full-route-checklist { grid-template-columns: 1fr; }
  .sk-tutorials-wrap { padding: 38px 0 66px; }
  .sk-stage-nav { grid-template-columns: 1fr; padding: 11px; }
  .sk-tutorial-stage { padding: 22px; border-radius: 18px; }
  .sk-tutorial-posts { grid-template-columns: 1fr; }
  .sk-tutorial-posts .sk-post-card:last-child:nth-child(odd) { grid-column: auto; }
  .sk-directory-hero { padding: 46px 0 32px; }
  .sk-directory-hero .sk-breadcrumbs { margin-bottom: 20px; }
  .sk-directory-hero-copy { text-align: left; }
  .sk-directory-hero-copy > p { font-size: 15px; }
  .sk-directory-quick-nav { grid-template-columns: 1fr; margin-top: 28px; }
  .sk-directory-main { padding: 22px 0 66px; }
  .sk-directory-guide { padding: 16px; }
  .sk-directory-problem-grid { grid-template-columns: 1fr; }
  .sk-directory-stats > div { min-height: 112px; padding: 14px 8px; }
  .sk-directory-stats strong { font-size: 23px; }
  .sk-directory-stage-list { gap: 58px; margin-top: 54px; }
  .sk-directory-section-header { align-items: flex-start; }
  .sk-directory-section-count { padding-top: 8px; }
  .sk-directory-card-grid { grid-template-columns: 1fr; }
  .sk-directory-card > a { min-height: 0; }
  .sk-directory-finish { grid-template-columns: auto 1fr; padding: 22px; }
  .sk-directory-finish .sk-button { grid-column: 1/-1; }
  .sk-footer-main { grid-template-columns: 1fr; gap: 34px; padding: 46px 0 34px; }
  .sk-footer-main > :last-child { width: 100%; justify-self: stretch; }
  .sk-footer-bottom { display: block; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* 3.1 editorial typography and spacing */
body {
  font-family: "Inter Tight", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
}
h1, h2, h3, h4 { color: var(--sk-ink); letter-spacing: -.028em; }
.sk-container { width: min(calc(100% - 48px), var(--sk-width)); }
.sk-section { padding: 96px 0; }
.sk-eyebrow { margin-bottom: 12px; font-size: 12px; letter-spacing: .14em; }
.sk-section h2 { font-size: clamp(34px, 4vw, 48px); line-height: 1.14; letter-spacing: -.045em; }
.sk-section-intro { max-width: 720px; margin-top: 16px; font-size: 17px; line-height: 1.85; }
.sk-nav-wrap { min-height: 78px; }
.primary-menu { gap: 32px; }
.primary-menu a { font-size: 14px; letter-spacing: .01em; }
.sk-button, .sk-header-cta { min-height: 48px; padding-inline: 22px; }
.sk-post-grid { gap: 24px; align-items: stretch; }
.sk-post-card { min-height: 320px; border-radius: 16px; box-shadow: 0 8px 26px rgba(15, 23, 42, .045); }
.sk-post-body { padding: 30px; }
.sk-post-meta { margin-bottom: 20px; }
.sk-post-card h3 { font-size: 22px; line-height: 1.4; letter-spacing: -.025em; }
.sk-post-excerpt { margin: 15px 0 26px; font-size: 15px; line-height: 1.8; }
.sk-post-action { padding-top: 18px; font-size: 14px; }
.sk-page-header { padding: 88px 0 64px; border-bottom: 0; background: linear-gradient(180deg, var(--sk-surface), #fff); }
.sk-page-header h1 { max-width: 980px; font-size: clamp(42px, 6vw, 66px); line-height: 1.08; letter-spacing: -.05em; }
.sk-breadcrumbs { margin-bottom: 22px; font-size: 13px; }
.sk-content-wrap { padding: 78px 0 112px; }
.entry-content { font-size: 17px; line-height: 1.85; }
.entry-content h2 { margin-top: 2.4em; font-size: 34px; }
.entry-content h3 { margin-top: 2em; font-size: 25px; }
.sk-footer-main { gap: 96px; padding: 68px 0 48px; }
.sk-footer-bottom { padding: 24px 0 36px; }

@media (max-width: 700px) {
  .sk-container, .sk-content-wrap { width: min(calc(100% - 28px), var(--sk-width)); }
  .sk-section { padding: 72px 0; }
  .sk-page-header { padding: 58px 0 42px; }
  .sk-page-header h1 { font-size: clamp(38px, 11vw, 48px); }
  .sk-content-wrap { padding: 52px 0 76px; }
  .sk-post-card { min-height: 0; }
  .sk-post-body { padding: 24px; }
  .entry-content h2 { font-size: 28px; }
}