/*
Theme Name: PPV Damper 风阀叶片
Theme URI: https://example.com/ppv-damper
Author: PP Theme Studio
Author URI: https://example.com
Description: 面向 PP 风阀制造与选型的高对比 WordPress 主题。中性浅灰底配阀门橙与靛蓝,内联 SVG 按开度实时旋转叶片(0%/30%/60%/100% 四态对照),另有六种阀门品类图标、选型对照表与调试要点,适合做通风调节阀、密闭阀与蝶阀的厂商。
Version: 1.0.0
Requires at least: 5.9
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: ppv-damper
Tags: light, one-column, custom-logo, custom-menu, featured-images, translation-ready
*/

:root {
  --bg: #f2f2f0;
  --bg-2: #e6e6e2;
  --card: #ffffff;
  --amber: #ef7d00;
  --amber-deep: #cf6600;
  --indigo: #2b2f6b;
  --ink: #141414;
  --gray: #6b6b68;
  --line: #d8d8d3;
  --radius: 4px;
  --container: 1180px;
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", Menlo, Consolas, monospace;
}

/* ===== Base ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
  background: var(--bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
svg { max-width: 100%; height: auto; }
.type { width: 120px; height: 90px; }
.container { width: min(100% - 40px, var(--container)); margin-inline: auto; }
.screen-reader-text {
  position: absolute !important; width: 1px; height: 1px;
  overflow: hidden; clip: rect(1px, 1px, 1px, 1px); white-space: nowrap;
}

.btn {
  display: inline-block; padding: 12px 26px; font-size: 15px; font-weight: 700;
  border: 2px solid var(--ink); border-radius: var(--radius); background: var(--card);
  color: var(--ink); cursor: pointer; transition: background .16s ease, color .16s ease;
}
.btn:hover { background: var(--ink); color: #fff; }
.btn-main { background: var(--amber); border-color: var(--amber); color: #fff; }
.btn-main:hover { background: var(--amber-deep); border-color: var(--amber-deep); color: #fff; }

.brand-mark {
  display: flex; flex-direction: column; justify-content: center; gap: 7px;
  width: 40px; height: 40px; padding: 8px; border: 2px solid var(--ink); border-radius: var(--radius); background: var(--card);
}
.brand-mark i { display: block; height: 4px; border-radius: 2px; background: var(--amber); }
.brand-mark i:first-child { transform: rotate(-16deg); }
.brand-mark i:last-child { transform: rotate(16deg); }

/* ===== Header ===== */
.site-header { background: var(--card); border-bottom: 3px solid var(--ink); position: sticky; top: 0; z-index: 50; }
.header-inner { display: flex; align-items: center; gap: 22px; padding: 13px 0; }
.site-branding { display: flex; align-items: center; gap: 12px; margin-right: auto; }
.site-title { font-size: 20px; font-weight: 800; line-height: 1.3; }
.site-desc { font-family: var(--mono); font-size: 11px; color: var(--gray); letter-spacing: .05em; }
.site-nav .menu { display: flex; gap: 24px; list-style: none; }
.site-nav a { font-size: 15px; font-weight: 500; padding: 4px 0; border-bottom: 3px solid transparent; }
.site-nav a:hover, .site-nav .current-menu-item > a { color: var(--amber-deep); border-bottom-color: var(--amber); }
.nav-toggle-input, .nav-toggle-label { display: none; }

/* ===== Hero ===== */
.hero { padding: 58px 0 52px; }
.hero-inner { display: grid; grid-template-columns: 1fr 1.05fr; gap: 44px; align-items: center; }
.hero-badge {
  display: inline-block; font-family: var(--mono); font-size: 12px; font-weight: 700; letter-spacing: .04em;
  color: #fff; background: var(--indigo); padding: 4px 14px; margin-bottom: 18px;
}
.hero h1 { font-size: clamp(30px, 4.6vw, 46px); line-height: 1.2; font-weight: 800; letter-spacing: -.025em; }
.hero h1 em { font-style: normal; color: var(--amber); }
.hero-sub { margin-top: 16px; font-size: 16px; color: var(--gray); max-width: 30em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.hero-fig { background: var(--card); border: 3px solid var(--ink); padding: 22px; }

/* ===== Sections ===== */
.section { padding: 60px 0; }
.section-tint { background: var(--bg-2); }
.sec-head { max-width: 46em; margin-bottom: 32px; }
.sec-kicker {
  display: inline-block; font-family: var(--mono); font-size: 11.5px; font-weight: 700; letter-spacing: .14em;
  color: #fff; background: var(--ink); padding: 2px 12px;
}
.sec-head h2 { font-size: 27px; font-weight: 800; letter-spacing: -.02em; margin-top: 8px; }
.sec-head p { font-size: 15px; color: var(--gray); margin-top: 6px; }

/* ===== Opening cards ===== */
.open-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.open-card {
  background: var(--card); border: 2px solid var(--ink); padding: 18px 20px 22px;
  transition: transform .16s ease, box-shadow .16s ease;
}
.open-card:hover { transform: translateY(-3px); box-shadow: 6px 6px 0 var(--amber); }
.open-fig { display: grid; place-items: center; background: var(--bg); border-bottom: 2px solid var(--ink); margin: -18px -20px 14px; padding: 12px; }
.open-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.open-head h3 { font-size: 18px; font-weight: 800; }
.open-pct { font-family: var(--mono); font-size: 13px; font-weight: 700; color: var(--amber-deep); }
.open-bar { height: 8px; background: var(--bg-2); margin: 10px 0 12px; }
.open-bar i { display: block; height: 100%; background: var(--amber); }
.open-card p { font-size: 13.5px; color: var(--gray); line-height: 1.8; }

/* ===== Types ===== */
.type-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.type-card { background: var(--card); border: 2px solid var(--ink); padding: 20px 22px 24px; transition: box-shadow .16s ease, transform .16s ease; }
.type-card:hover { transform: translateY(-3px); box-shadow: 6px 6px 0 var(--indigo); }
.type-fig { display: grid; place-items: center; background: var(--bg); padding: 10px; margin-bottom: 14px; }
.type-card h3 { font-size: 18px; font-weight: 800; margin-bottom: 6px; }
.type-card h3 a:hover { color: var(--amber-deep); }
.type-card p { font-size: 14px; color: var(--gray); line-height: 1.85; }

/* ===== Selection table ===== */
.table-wrap { overflow-x: auto; background: var(--card); border: 2px solid var(--ink); }
.sel-table { width: 100%; border-collapse: collapse; min-width: 760px; font-size: 15px; }
.sel-table th {
  text-align: left; padding: 13px 20px; background: var(--ink); color: #fff;
  font-family: var(--mono); font-size: 12.5px; font-weight: 600; letter-spacing: .03em;
}
.sel-table td { padding: 13px 20px; border-bottom: 1px solid var(--line); color: #3a3a38; }
.sel-table td:first-child { font-weight: 700; }
.sel-table td:nth-child(2), .sel-table td:nth-child(4) { font-family: var(--mono); }
.sel-table td:nth-child(4) { color: var(--amber-deep); font-weight: 700; }
.sel-table tbody tr:last-child td { border-bottom: 0; }
.sel-table tbody tr:hover { background: #fdf3e8; }

/* ===== Tips ===== */
.tip-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.tip { background: var(--card); border: 2px solid var(--ink); border-top: 6px solid var(--amber); padding: 22px 20px; }
.tip-no { display: block; font-family: var(--mono); font-size: 13px; font-weight: 800; color: var(--indigo); margin-bottom: 8px; }
.tip h3 { font-size: 17px; font-weight: 800; margin-bottom: 8px; }
.tip p { font-size: 14px; color: var(--gray); line-height: 1.85; }

/* ===== Notes ===== */
.note-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.note-card { display: block; background: var(--card); border: 2px solid var(--ink); padding: 22px 24px; transition: box-shadow .16s ease, transform .16s ease; }
.note-card:hover { transform: translateY(-2px); box-shadow: 6px 6px 0 var(--amber); }
.note-card time { font-family: var(--mono); font-size: 12px; color: var(--indigo); font-weight: 700; }
.note-card h3 { font-size: 18px; font-weight: 800; margin: 6px 0 8px; }
.note-card p { font-size: 14px; color: var(--gray); }

/* ===== CTA ===== */
.cta-valve {
  margin: 56px 0; background: var(--ink); color: #fff; padding: 34px 34px;
  display: flex; flex-wrap: wrap; gap: 24px; align-items: center; justify-content: space-between;
  border-left: 10px solid var(--amber);
}
.cta-label { display: inline-block; font-family: var(--mono); font-size: 11.5px; font-weight: 700; letter-spacing: .1em; color: var(--amber); margin-bottom: 8px; }
.cta-valve h2 { font-size: 25px; font-weight: 800; letter-spacing: -.02em; }
.cta-valve p { font-size: 14.5px; color: #b6b6b2; margin-top: 8px; max-width: 42em; }
.cta-side { display: flex; align-items: center; gap: 20px; }
.cta-phone { font-family: var(--mono); font-size: 23px; font-weight: 800; color: var(--amber); }

/* ===== Page hero / inner ===== */
.page-hero { background: var(--card); border-bottom: 3px solid var(--ink); padding: 32px 0; }
.page-hero h1 { font-size: 27px; font-weight: 800; letter-spacing: -.02em; }
.breadcrumbs { margin-top: 6px; font-family: var(--mono); font-size: 12px; color: var(--gray); }
.breadcrumbs a:hover { color: var(--amber-deep); }

.layout { display: grid; grid-template-columns: 1fr 290px; gap: 30px; padding: 42px 0 62px; align-items: start; }
.layout-full { padding: 42px 0 62px; }
.entry-card { background: var(--card); border: 2px solid var(--ink); padding: 22px 24px; margin-bottom: 16px; }
.entry-card:hover { box-shadow: 6px 6px 0 var(--amber); }
.entry-card h2 { font-size: 20px; font-weight: 800; margin-bottom: 8px; }
.entry-card h2 a:hover { color: var(--amber-deep); }
.entry-meta { display: flex; gap: 14px; font-family: var(--mono); font-size: 12px; color: var(--gray); }
.entry-meta a { color: var(--indigo); }
.entry-excerpt { margin-top: 10px; font-size: 15px; color: #3a3a38; }
.entry-thumb { margin-bottom: 16px; border: 2px solid var(--ink); }
.single-header { border-bottom: 3px solid var(--ink); padding-bottom: 14px; margin-bottom: 20px; }
.single-header h1 { font-size: 27px; font-weight: 800; letter-spacing: -.025em; margin-bottom: 8px; }
.entry-content { background: var(--card); border: 2px solid var(--ink); padding: 28px; font-size: 16px; }
.entry-content > * + * { margin-top: 16px; }
.entry-content h2 { font-size: 21px; font-weight: 800; color: var(--indigo); }
.entry-content h3 { font-size: 18px; font-weight: 800; }
.entry-content ul, .entry-content ol { padding-left: 22px; }
.entry-content blockquote { border-left: 6px solid var(--amber); background: var(--bg); padding: 14px 18px; color: #3a3a38; }
.entry-content code { font-family: var(--mono); background: var(--bg-2); padding: 2px 6px; }
.entry-content a { color: var(--amber-deep); text-decoration: underline; }
.post-nav { display: flex; justify-content: space-between; gap: 16px; margin-top: 20px; font-size: 14px; color: var(--gray); }
.post-nav a:hover { color: var(--amber-deep); }
.pagination { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; }
.pagination .page-numbers {
  display: grid; place-items: center; min-width: 40px; height: 40px; padding: 0 10px;
  border: 2px solid var(--ink); background: var(--card); font-family: var(--mono); font-weight: 800;
}
.pagination .current, .pagination .page-numbers:hover { background: var(--amber); color: #fff; border-color: var(--amber); }

/* ===== Sidebar ===== */
.sidebar { display: flex; flex-direction: column; gap: 18px; position: sticky; top: 92px; }
.sidebar-cta { background: var(--indigo); color: #fff; padding: 24px 20px; text-align: center; border: 2px solid var(--ink); }
.sidebar-cta h3 { font-size: 17px; font-weight: 800; }
.sidebar-cta p { font-size: 13px; color: #b3b6d4; margin: 8px 0 12px; }
.sidebar-cta strong { display: block; font-family: var(--mono); font-size: 21px; color: var(--amber); margin-bottom: 14px; }
.sidebar-cta .btn { width: 100%; background: var(--amber); border-color: var(--amber); color: #fff; }
.widget { background: var(--card); border: 2px solid var(--ink); padding: 20px; }
.widget-title { font-size: 16px; font-weight: 800; padding-bottom: 10px; margin-bottom: 12px; border-bottom: 2px solid var(--ink); }
.widget ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.widget li a { font-size: 14px; color: #3a3a38; }
.widget li a:hover { color: var(--amber-deep); }

.search-form { display: flex; gap: 8px; }
.search-field { flex: 1; min-width: 0; padding: 10px 12px; border: 2px solid var(--ink); border-radius: var(--radius); font-family: var(--mono); font-size: 14px; }
.search-field:focus { outline: none; border-color: var(--amber); }
.search-submit { padding: 10px 18px; border: 2px solid var(--amber); border-radius: var(--radius); background: var(--amber); color: #fff; font-weight: 700; cursor: pointer; }
.search-submit:hover { background: var(--amber-deep); border-color: var(--amber-deep); }

/* ===== Comments ===== */
.comments-area { margin-top: 24px; background: var(--card); border: 2px solid var(--ink); padding: 26px; }
.comments-area h2, .comment-reply-title { font-size: 18px; font-weight: 800; margin-bottom: 14px; }
.comment-list { list-style: none; display: flex; flex-direction: column; gap: 14px; margin-bottom: 20px; }
.comment-list .comment-body { border-left: 4px solid var(--line); padding-left: 16px; font-size: 15px; }
.comment-notes { font-size: 13px; color: var(--gray); margin-bottom: 10px; }
.comment-form p { margin-bottom: 12px; }
.comment-form label { display: block; font-size: 13px; font-weight: 700; margin-bottom: 5px; }
.comment-form input[type="text"], .comment-form input[type="email"],
.comment-form input[type="url"], .comment-form textarea {
  width: 100%; padding: 10px 12px; border: 2px solid var(--ink); border-radius: var(--radius); font-family: inherit; font-size: 14px;
}
.comment-form input:focus, .comment-form textarea:focus { outline: none; border-color: var(--amber); }
.comment-form .submit { padding: 12px 28px; border: 0; border-radius: var(--radius); background: var(--amber); color: #fff; font-weight: 800; cursor: pointer; }

/* ===== 404 ===== */
.error-page { text-align: center; padding: 80px 0; }
.error-code { font-family: var(--mono); font-size: 88px; font-weight: 800; color: var(--amber); line-height: 1; }
.error-page h1 { font-size: 25px; font-weight: 800; margin: 12px 0 8px; }
.error-page p { color: var(--gray); margin-bottom: 20px; }
.error-page .search-form { max-width: 420px; margin: 0 auto 20px; }

/* ===== Footer ===== */
.site-footer { background: var(--card); border-top: 3px solid var(--ink); margin-top: 24px; }
.footer-main { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: 34px; padding: 44px 0 30px; }
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.footer-brand strong { font-size: 17px; font-weight: 800; }
.footer-col p { font-size: 14px; color: var(--gray); }
.footer-col h3 { font-size: 15px; font-weight: 800; color: var(--indigo); margin-bottom: 14px; }
.footer-col ul, .footer-menu { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.footer-col a { font-size: 14px; color: #3a3a38; }
.footer-col a:hover { color: var(--amber-deep); }
.footer-contact li { font-size: 14px; display: flex; gap: 8px; color: var(--gray); }
.footer-contact b { color: var(--ink); font-weight: 700; min-width: 34px; }
.footer-bottom { border-top: 2px solid var(--ink); padding: 14px 0; font-family: var(--mono); font-size: 12px; color: var(--gray); }
.footer-bottom .container { display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 30px; }
  .open-grid { grid-template-columns: repeat(2, 1fr); }
  .type-grid { grid-template-columns: repeat(2, 1fr); }
  .tip-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: repeat(2, 1fr); }
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}
@media (max-width: 780px) {
  .nav-toggle-label {
    display: flex; flex-direction: column; justify-content: center; gap: 5px;
    width: 42px; height: 42px; padding: 0 8px; border: 2px solid var(--ink); border-radius: var(--radius); cursor: pointer;
  }
  .nav-toggle-label span { display: block; height: 3px; background: var(--ink); }
  .site-nav { display: none; order: 10; width: 100%; padding-top: 12px; margin-top: 12px; border-top: 2px solid var(--ink); }
  .nav-toggle-input:checked ~ .site-nav { display: block; }
  .site-nav .menu { flex-direction: column; gap: 2px; }
  .site-nav a { display: block; padding: 10px 0; }
  .header-inner { flex-wrap: wrap; }
  .header-cta { display: none; }
  .open-grid, .type-grid, .tip-grid, .note-grid { grid-template-columns: 1fr; }
  .cta-valve { padding: 26px 22px; }
  .footer-main { grid-template-columns: 1fr; gap: 26px; }
}