/*
Theme Name: HYT Klean
Theme URI: https://hengyatong.com
Author: HengYatong Environmental Technology Co., Ltd.
Author URI: https://hengyatong.com
Description: A clean tech-blue WordPress theme for HengYatong commercial kitchen fume purification. Modeled on the Kleanland (Globalso) trade-site layout: capsule fixed nav, full-screen Swiper hero with SVG wave animation, numbered advantage strip, solution/imagery blocks, Product Center (2+3 card grid), video wall, sales-presence stats, news grid and a 5-column footer with inquiry popup. Frontend in English, fully responsive, SEO + JSON-LD + dynamic sitemap built in.
Version: 1.1.0
Requires at least: 5.8
Tested up to: 6.4
Requires PHP: 7.4
License: GPL v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: hengyatong-klean
Tags: one-column, custom-logo, custom-menu, featured-images, translation-ready, theme-options, blog, news, product-showcase, responsive-layout, e-commerce
*/

/* ============================================================
   Base styles — main design lives in assets/css/main.css
   Tech-blue / Klean-style foundation
   ============================================================ */

*,
*::before,
*::after {
    box-sizing: border-box;
}

:root {
    /* 主题色（对齐 Kleanland） */
    --hytk-theme: #005caa;            /* 科技蓝 · 主色 */
    --hytk-theme-dark: #004a88;       /* hover/深蓝 */
    --hytk-accent: #2ab344;           /* 强调绿 */
    --hytk-accent-dark: #229239;

    /* 背景分区 */
    --hytk-bg-light: #eef7fe;         /* 浅蓝 */
    --hytk-bg-light-2: #f5fbff;       /* 更浅蓝 */
    --hytk-bg-beige: #f6f1ea;         /* 米色 */
    --hytk-white: #ffffff;

    /* 文字 */
    --hytk-text: #333333;
    --hytk-text-muted: #616161;
    --hytk-text-weak: #8a8a8a;

    /* 边框 / 阴影（柔和科技阴影） */
    --hytk-line: #e4eef8;
    --hytk-shadow: 0 2px 12px rgba(0, 92, 169, 0.16);
    --hytk-shadow-lg: 0 2px 30px rgba(0, 92, 169, 0.30);

    /* 圆角 */
    --hytk-radius: 15px;
    --hytk-radius-sm: 10px;
    --hytk-radius-lg: 20px;
    --hytk-radius-pill: 100px;

    /* 字体 */
    --hytk-font-display: 'PT Sans Narrow', 'Arial Narrow', Arial, sans-serif;
    --hytk-font-body: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --hytk-font-alt: 'Cabin', 'PT Sans Narrow', Arial, sans-serif;

    /* 版式 */
    --hytk-container: 1320px;
    --hytk-gutter: 24px;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--hytk-font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--hytk-text);
    background-color: var(--hytk-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
}

a {
    color: var(--hytk-theme);
    text-decoration: none;
    transition: color 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

a:hover {
    color: var(--hytk-accent);
}

h1, h2, h3, h4, h5, h6 {
    margin: 0 0 0.5em;
    line-height: 1.18;
    font-family: var(--hytk-font-display);
    font-weight: 700;
    color: var(--hytk-theme);
}

h1 { font-size: 44px; }
h2 { font-size: 36px; }
h3 { font-size: 26px; }
h4 { font-size: 20px; }

p {
    margin: 0 0 1em;
}

::selection {
    background: var(--hytk-theme);
    color: #fff;
}

input, textarea, select, button {
    font-family: var(--hytk-font-body);
}

.alignleft  { float: left; margin: 0 1.5em 1em 0; }
.alignright { float: right; margin: 0 0 1em 1.5em; }
.aligncenter { display: block; margin-left: auto; margin-right: auto; }

.screen-reader-text {
    border: 0;
    clip: rect(1px, 1px, 1px, 1px);
    clip-path: inset(50%);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute !important;
    width: 1px;
    word-wrap: normal !important;
}

.sticky { display: block; }
.bypostauthor { display: block; }

/* 可访问性焦点 */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px dashed var(--hytk-theme);
    outline-offset: 2px;
}

/* 语义化区块 */
main { display: block; }