/* ==========================================================================
   澎威塑业 PengWei PP — 主样式
   工程塑料工业 · 化工蓝 + 分子网格 + 板材层叠 · 材质参数表
   ========================================================================== */

:root {
	--c-blue: #1e5fa8;
	--c-blue-deep: #16406f;
	--c-cyan: #2aa5c9;
	--c-bg: #eef3f8;
	--c-card: #ffffff;
	--c-ink: #17222e;
	--c-text: #56677a;
	--c-line: #d6e1ec;
	--radius: 10px;
	--radius-sm: 6px;
	--shadow: 0 12px 30px rgba(23, 34, 46, 0.09);
	--mesh:
		radial-gradient(circle, rgba(30, 95, 168, .5) 0 2px, transparent 2.5px) 0 0 / 40px 40px,
		linear-gradient(rgba(30, 95, 168, .10) 1px, transparent 1px) 0 0 / 40px 40px,
		linear-gradient(90deg, rgba(30, 95, 168, .10) 1px, transparent 1px) 0 0 / 40px 40px;
	--font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, "Segoe UI", sans-serif;
	--mono: "SF Mono", "Menlo", "Consolas", monospace;
}

/* ---------- 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font); font-size: 16px; line-height: 1.76; color: var(--c-text); background: var(--c-bg); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-blue); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--c-blue-deep); }
h1, h2, h3, h4 { color: var(--c-ink); line-height: 1.3; margin: 0 0 .5em; font-weight: 700; }
p { margin: 0 0 1em; }
::selection { background: var(--c-blue); color: #fff; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.screen-reader-text { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link:focus { position: fixed; left: 16px; top: 16px; z-index: 999; width: auto; height: auto; clip: auto; background: var(--c-blue); color: #fff; padding: 10px 18px; border-radius: 8px; }
:focus-visible { outline: 2px solid var(--c-blue); outline-offset: 2px; }

/* ---------- 按钮 ---------- */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 26px; border-radius: var(--radius-sm); border: 1.5px solid transparent; font-size: 15px; font-weight: 600; cursor: pointer; white-space: nowrap; transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease; }
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn--primary { background: linear-gradient(120deg, var(--c-blue), var(--c-blue-deep)); color: #fff; }
.btn--primary:hover { color: #fff; }
.btn--line { background: transparent; color: var(--c-blue-deep); border-color: var(--c-blue); }
.btn--line:hover { background: var(--c-blue); color: #fff; }
.btn--sm { padding: 9px 18px; font-size: 14px; }
.btn--lg { padding: 14px 32px; font-size: 16px; }
.btn--block { width: 100%; justify-content: center; }
.pw-icon { flex-shrink: 0; }

/* ---------- 页头 ---------- */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(238, 243, 248, .93); backdrop-filter: blur(12px); border-bottom: 1px solid var(--c-line); }
.site-header.is-scrolled { box-shadow: var(--shadow); }
.site-header__inner { display: flex; align-items: center; gap: 28px; min-height: 74px; }
.site-brand { margin-right: auto; }
.site-brand__link { display: flex; align-items: center; gap: 12px; }
.site-brand__mark { width: 44px; height: 44px; border-radius: var(--radius-sm); display: grid; place-items: center; color: #fff; background: linear-gradient(135deg, var(--c-blue), var(--c-cyan)); }
.site-brand__name { display: block; font-size: 20px; font-weight: 800; color: var(--c-ink); }
.site-brand__slogan { display: block; font-size: 12px; color: var(--c-text); letter-spacing: .04em; }
.custom-logo { max-height: 48px; width: auto; }
.site-nav__list { list-style: none; display: flex; gap: 4px; margin: 0; padding: 0; }
.site-nav__list li { position: relative; }
.site-nav__list a { display: block; padding: 9px 14px; color: var(--c-ink); font-weight: 500; font-size: 14.5px; border-radius: var(--radius-sm); }
.site-nav__list a:hover { color: var(--c-blue); background: rgba(30, 95, 168, .08); }
.site-nav__list .sub-menu { position: absolute; top: 100%; left: 0; min-width: 190px; list-style: none; margin: 6px 0 0; padding: 8px; background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius); box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translateY(8px); transition: all .2s ease; }
.site-nav__list li:hover > .sub-menu, .site-nav__list li:focus-within > .sub-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.site-header__actions { display: flex; align-items: center; gap: 14px; }
.nav-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; padding: 10px; background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius-sm); cursor: pointer; }
.nav-toggle span { display: block; height: 2px; background: var(--c-ink); transition: transform .25s ease, opacity .2s ease; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 首屏 ---------- */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--c-line); background: linear-gradient(180deg, #e6eef6, var(--c-bg)); }
.hero__mesh { position: absolute; inset: 0; background: var(--mesh); opacity: .5; pointer-events: none; -webkit-mask-image: linear-gradient(120deg, #000, transparent 70%); mask-image: linear-gradient(120deg, #000, transparent 70%); }
.hero__inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.2fr 1fr; gap: 54px; align-items: center; padding-top: 78px; padding-bottom: 82px; }
.hero__eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13.5px; font-weight: 600; color: var(--c-blue-deep); background: rgba(30, 95, 168, .07); border: 1px solid rgba(30, 95, 168, .25); padding: 7px 15px; border-radius: 999px; }
.hero__eyebrow .pw-icon { color: var(--c-cyan); }
.hero__title { font-size: clamp(32px, 4.4vw, 52px); font-weight: 800; margin: 22px 0 16px; }
.hero__title em { font-style: normal; color: var(--c-blue); }
.hero__desc { font-size: 16.5px; max-width: 31em; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.hero__panel { background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px 26px; }
.hero__panel-title { display: flex; align-items: center; gap: 8px; font-size: 13.5px; font-weight: 700; color: var(--c-ink); margin: 0 0 16px; }
.hero__panel-title .pw-icon { color: var(--c-blue); }
.specrows { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.specrows li { display: flex; align-items: center; justify-content: space-between; background: var(--c-bg); border-radius: var(--radius-sm); padding: 11px 15px; font-size: 14px; color: var(--c-ink); font-weight: 500; }
.specrows code { font-family: var(--mono); font-size: 13px; color: var(--c-blue-deep); font-weight: 700; }
.hero__panel-foot { font-size: 12.5px; color: var(--c-text); margin: 14px 0 0; text-align: center; }

/* ---------- 通用版块 ---------- */
.section { padding: 84px 0; }
.section--pad { padding: 60px 0 84px; }
.section--tint { background: #e5edf5; }
.section-head { max-width: 660px; margin: 0 auto 48px; text-align: center; }
.section-head__eyebrow { font-family: var(--mono); font-size: 12px; font-weight: 700; letter-spacing: .26em; color: var(--c-cyan); margin-bottom: 10px; }
.section-head__title { font-size: clamp(26px, 3.2vw, 38px); margin-bottom: 14px; }
.section-head__desc { margin: 0; }
.section-foot { text-align: center; margin: 44px 0 0; }

/* ---------- 材质表 ---------- */
.mtable-wrap { max-width: 920px; margin: 0 auto; overflow-x: auto; }
.mtable { width: 100%; border-collapse: collapse; background: var(--c-card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); min-width: 560px; }
.mtable th, .mtable td { padding: 15px 20px; text-align: left; font-size: 14.5px; border-bottom: 1px solid var(--c-line); }
.mtable thead th { background: var(--c-blue-deep); color: #fff; font-size: 13.5px; letter-spacing: .04em; }
.mtable tbody tr:last-child td { border-bottom: 0; }
.mtable tbody tr:hover { background: rgba(30, 95, 168, .05); }
.mtable td:first-child { font-weight: 700; color: var(--c-ink); }
.mtable td:nth-child(2) { font-family: var(--mono); color: var(--c-blue-deep); }

/* ---------- 特性卡 ---------- */
.feat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feat-card { background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 26px 24px 22px; transition: transform .25s ease, box-shadow .25s ease; }
.feat-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.feat-card__icon { display: inline-grid; place-items: center; width: 52px; height: 52px; border-radius: var(--radius-sm); color: var(--c-blue); background: rgba(30, 95, 168, .1); margin-bottom: 14px; }
.feat-card h3 { font-size: 17px; margin-bottom: 6px; }
.feat-card p { font-size: 13.5px; margin: 0; }

/* ---------- 产品卡片 ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.product-card { background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: transform .25s ease, box-shadow .25s ease; }
.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.product-card__media { position: relative; display: block; aspect-ratio: 16 / 10; background: var(--mesh), linear-gradient(150deg, #dce7f2, #eef3f8); background-size: 40px 40px, 40px 40px, 40px 40px, auto; overflow: hidden; }
.product-card__media img { width: 100%; height: 100%; object-fit: cover; }
.product-card__ph { position: absolute; inset: 0; display: grid; place-items: center; color: var(--c-blue); }
.product-card__spec { position: absolute; left: 14px; bottom: 12px; font-size: 12px; font-weight: 600; color: var(--c-blue-deep); background: #fff; border: 1px solid rgba(30, 95, 168, .3); padding: 4px 12px; border-radius: 999px; }
.product-card__body { padding: 20px 24px 22px; display: flex; flex-direction: column; flex: 1; }
.product-card__title { font-size: 17px; margin-bottom: 8px; }
.product-card__title a { color: var(--c-ink); }
.product-card__title a:hover { color: var(--c-blue); }
.product-card__desc { font-size: 14px; flex: 1; margin-bottom: 14px; }
.product-card__more { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; transition: gap .2s ease; }
.product-card__more:hover { gap: 10px; }

/* ---------- 数据带 ---------- */
.databand { background: linear-gradient(120deg, var(--c-blue-deep), var(--c-blue)); color: #fff; }
.databand__inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding-top: 50px; padding-bottom: 50px; text-align: center; }
.databand strong { display: block; font-size: clamp(28px, 3.4vw, 42px); font-weight: 800; font-variant-numeric: tabular-nums; color: #bfe0ef; }
.databand span { font-size: 13.5px; color: rgba(255, 255, 255, .78); }

/* ---------- 场景 ---------- */
.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.scene-card { background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 26px 26px 22px; transition: transform .25s ease, box-shadow .25s ease; }
.scene-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.scene-card__icon { display: inline-grid; place-items: center; width: 50px; height: 50px; border-radius: var(--radius-sm); color: var(--c-blue); background: rgba(30, 95, 168, .1); margin-bottom: 14px; }
.scene-card h3 { font-size: 17px; margin-bottom: 6px; }
.scene-card p { font-size: 14px; margin: 0; }

/* ---------- 案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card { background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius); border-top: 3px solid var(--c-blue); padding: 26px 28px; transition: transform .25s ease, box-shadow .25s ease; }
.case-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.case-card__badge { display: inline-block; font-family: var(--mono); font-size: 11.5px; font-weight: 700; letter-spacing: .14em; color: var(--c-blue-deep); background: rgba(30, 95, 168, .08); border: 1px solid rgba(30, 95, 168, .3); padding: 3px 12px; border-radius: 999px; margin-bottom: 14px; }
.case-card h3 { font-size: 17.5px; margin-bottom: 6px; }
.case-card__meta { font-size: 13px; color: var(--c-blue); font-weight: 600; margin-bottom: 10px; }
.case-card__desc { font-size: 14px; margin: 0; }

/* ---------- 新闻 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.news-card { background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 26px 26px 22px; transition: transform .25s ease, box-shadow .25s ease; }
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.news-card__date { font-family: var(--mono); font-size: 12.5px; color: var(--c-cyan); font-weight: 600; margin-bottom: 10px; }
.news-card h3 { font-size: 16.5px; margin-bottom: 10px; }
.news-card h3 a { color: var(--c-ink); }
.news-card h3 a:hover { color: var(--c-blue); }
.news-card__desc { font-size: 14px; }
.news-card__more { display: inline-flex; align-items: center; gap: 6px; font-size: 13.5px; font-weight: 600; }

/* ---------- 联系 ---------- */
.contact { display: grid; grid-template-columns: 1fr 1.05fr; gap: 56px; align-items: center; }
.contact__copy .section-head__eyebrow, .contact__copy .section-head__title { text-align: left; }
.contact__list { list-style: none; margin: 28px 0 0; padding: 0; display: grid; gap: 15px; }
.contact__list li { display: flex; align-items: center; gap: 12px; font-size: 15px; color: var(--c-ink); }
.contact__list .pw-icon { color: var(--c-blue); }
.contact__form-wrap { background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 34px; box-shadow: var(--shadow); }
.contact-form h3 { font-size: 20px; margin-bottom: 20px; }
.contact-form p { margin-bottom: 16px; }
.contact-form label { display: block; font-size: 14px; font-weight: 600; color: var(--c-ink); margin-bottom: 6px; }
.contact-form input[type="text"], .contact-form input[type="tel"], .contact-form textarea { width: 100%; padding: 12px 15px; border: 1px solid var(--c-line); border-radius: var(--radius-sm); font-family: inherit; font-size: 15px; color: var(--c-ink); background: var(--c-bg); transition: border-color .2s ease, background .2s ease; }
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--c-blue); background: #fff; }
.contact-form__tip { font-size: 12.5px; color: #93a4b5; text-align: center; margin: 12px 0 0; }
.hp-field { position: absolute !important; left: -9999px; }
.form-notice { background: rgba(42, 165, 201, .12); border: 1px solid rgba(42, 165, 201, .4); color: var(--c-blue-deep); border-radius: var(--radius-sm); padding: 13px 17px; margin-bottom: 18px; font-size: 14.5px; }

/* ---------- 内页头部 ---------- */
.page-hero { padding: 58px 0 50px; background: var(--mesh), linear-gradient(180deg, #e6eef6, var(--c-bg)); background-size: 40px 40px, 40px 40px, 40px 40px, auto; border-bottom: 1px solid var(--c-line); }
.page-hero__title { font-size: clamp(28px, 3.6vw, 42px); font-weight: 800; margin: 0; }
.page-hero__sub { margin: 10px 0 0; }
.page-hero__meta { font-family: var(--mono); font-size: 13px; color: var(--c-blue); font-weight: 600; margin: 0 0 10px; }
.page-hero__meta a { color: var(--c-blue); }

/* ---------- 博客列表 ---------- */
.post-list { display: grid; gap: 20px; max-width: 860px; margin: 0 auto; }
.post-card { display: grid; grid-template-columns: 280px 1fr; background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius); overflow: hidden; transition: transform .25s ease, box-shadow .25s ease; }
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.post-card__thumb img { width: 100%; height: 100%; object-fit: cover; }
.post-card:not(:has(.post-card__thumb)) { grid-template-columns: 1fr; }
.post-card__body { padding: 24px 28px; }
.post-card__meta { font-family: var(--mono); font-size: 12.5px; color: var(--c-cyan); font-weight: 600; margin-bottom: 8px; }
.post-card__meta a { color: inherit; }
.post-card__title { font-size: 19px; margin-bottom: 8px; }
.post-card__title a { color: var(--c-ink); }
.post-card__title a:hover { color: var(--c-blue); }
.post-card__desc { font-size: 14.5px; margin-bottom: 12px; }
.post-card__more { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; }
.no-results { text-align: center; padding: 60px 0; }
.navigation.pagination { margin: 46px 0 0; text-align: center; }
.nav-links { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; }
.nav-links .page-numbers { display: inline-block; min-width: 42px; padding: 9px 14px; border: 1px solid var(--c-line); border-radius: var(--radius-sm); color: var(--c-ink); font-weight: 600; font-size: 14px; background: var(--c-card); }
.nav-links .page-numbers.current, .nav-links .page-numbers:hover { background: var(--c-blue); border-color: var(--c-blue); color: #fff; }

/* ---------- 文章内容 ---------- */
.entry-wrap { max-width: 860px; padding-top: 48px; padding-bottom: 84px; }
.entry { background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 40px 44px; }
.entry__thumb { margin: 0 0 28px; border-radius: var(--radius-sm); overflow: hidden; }
.entry__content { font-size: 16px; }
.entry__content h2 { font-size: 25px; margin-top: 1.6em; }
.entry__content h3 { font-size: 20px; margin-top: 1.4em; }
.entry__content img { border-radius: var(--radius-sm); }
.entry__content blockquote { margin: 1.5em 0; padding: 16px 24px; border-left: 4px solid var(--c-blue); background: var(--c-bg); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.entry__content table { width: 100%; border-collapse: collapse; margin: 1.5em 0; }
.entry__content th, .entry__content td { border: 1px solid var(--c-line); padding: 10px 14px; text-align: left; }
.entry__content th { background: var(--c-bg); }
.entry__tags { margin-top: 26px; font-size: 14px; }
.page-links { margin: 24px 0; }
.post-nav { display: flex; justify-content: space-between; gap: 20px; margin: 40px 0; font-size: 14.5px; }
.post-nav__next { text-align: right; }

/* ---------- 评论 ---------- */
.comments-area { margin-top: 28px; background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 34px 40px; }
.comments-title, .comment-reply-title { font-size: 21px; }
.comment-list { list-style: none; margin: 0 0 30px; padding: 0; }
.comment-list .comment { border-bottom: 1px solid var(--c-line); padding: 20px 0; }
.comment-list .children { list-style: none; padding-left: 40px; }
.comment-author { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--c-ink); }
.comment-author .avatar { border-radius: 50%; }
.comment-metadata { font-size: 12.5px; }
.comment-content { font-size: 15px; }
.reply { font-size: 13.5px; }
.comment-form input[type="text"], .comment-form input[type="email"], .comment-form input[type="url"], .comment-form textarea { width: 100%; padding: 11px 14px; border: 1px solid var(--c-line); border-radius: var(--radius-sm); font-family: inherit; font-size: 15px; background: var(--c-bg); }
.comment-form input:focus, .comment-form textarea:focus { outline: none; border-color: var(--c-blue); background: #fff; }
.form-submit .submit { background: linear-gradient(120deg, var(--c-blue), var(--c-blue-deep)); color: #fff; border: 0; border-radius: var(--radius-sm); padding: 12px 30px; font-size: 15px; font-weight: 600; cursor: pointer; }

/* ---------- 搜索 / 404 ---------- */
.search-form { display: flex; gap: 10px; max-width: 480px; }
.search-form__input { flex: 1; padding: 12px 16px; border: 1px solid var(--c-line); border-radius: var(--radius-sm); font-family: inherit; font-size: 15px; background: #fff; }
.search-form__input:focus { outline: none; border-color: var(--c-blue); }
.error-404 { text-align: center; padding: 56px 32px; background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius); }
.error-404__code { font-family: var(--mono); font-size: clamp(90px, 15vw, 150px); font-weight: 800; line-height: 1; color: var(--c-blue); margin: 0 0 10px; }
.error-404 .search-form { margin: 24px auto 28px; justify-content: center; }

/* ---------- 产品详情 / 归档 ---------- */
.product-single { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; padding-top: 48px; padding-bottom: 40px; align-items: start; }
.product-single__media { position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 4 / 3; border: 1px solid var(--c-line); background: var(--mesh), linear-gradient(150deg, #dce7f2, #eef3f8); background-size: 40px 40px, 40px 40px, 40px 40px, auto; box-shadow: var(--shadow); }
.product-single__media img { width: 100%; height: 100%; object-fit: cover; }
.product-single__ph { position: absolute; inset: 0; display: grid; place-items: center; color: var(--c-blue); }
.product-single__body { background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 32px 36px; }
.product-single__summary { background: rgba(30, 95, 168, .07); border: 1px solid rgba(30, 95, 168, .25); border-radius: var(--radius-sm); padding: 15px 20px; margin-bottom: 22px; font-size: 15px; color: var(--c-ink); }
.product-single__summary p { margin: 0; }
.product-single__cta { margin-top: 28px; padding-top: 24px; border-top: 1px dashed var(--c-line); }
.product-single__cta h3 { font-size: 17px; margin-bottom: 6px; }
.product-single__cta p { font-size: 14px; margin-bottom: 16px; }
.product-single__cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.related-title { font-size: 23px; margin-bottom: 26px; }
.archive-cta { margin-top: 60px; text-align: center; background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 46px 32px; box-shadow: var(--shadow); }
.archive-cta h2 { font-size: 24px; }
.archive-cta p { margin-bottom: 20px; }

/* ---------- 页脚 ---------- */
.site-footer { background: #132030; color: rgba(255, 255, 255, .64); margin-top: 24px; }
.site-footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 44px; padding-top: 60px; padding-bottom: 46px; }
.site-footer__logo { display: flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 800; color: #fff; margin-bottom: 14px; }
.site-footer__logo .pw-icon { color: var(--c-cyan); }
.site-footer__about { font-size: 14px; line-height: 1.85; }
.site-footer__phone { display: flex; align-items: center; gap: 10px; font-size: 21px; font-weight: 800; color: var(--c-cyan); margin-top: 18px; }
.site-footer__title { color: #fff; font-size: 15.5px; margin-bottom: 18px; }
.site-footer__menu { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.site-footer__menu a { color: rgba(255, 255, 255, .64); font-size: 14px; }
.site-footer__menu a:hover { color: var(--c-cyan); }
.site-footer__contact { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; font-size: 14px; }
.site-footer__contact li { display: flex; gap: 9px; align-items: flex-start; }
.site-footer__contact .pw-icon { color: var(--c-cyan); margin-top: 4px; }
.site-footer__bottom { border-top: 1px solid rgba(255, 255, 255, .1); }
.site-footer__bottom-inner { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding-top: 20px; padding-bottom: 20px; font-size: 13px; }
.site-footer__bottom p { margin: 0; }

/* ---------- 返回顶部 ---------- */
.back-to-top { position: fixed; right: 26px; bottom: 26px; z-index: 90; width: 46px; height: 46px; border: 0; border-radius: var(--radius-sm); display: grid; place-items: center; cursor: pointer; background: linear-gradient(135deg, var(--c-blue), var(--c-blue-deep)); color: #fff; box-shadow: 0 12px 28px rgba(30, 95, 168, .4); opacity: 0; visibility: hidden; transform: translateY(12px); transition: all .25s ease; }
.back-to-top .pw-icon { transform: rotate(-90deg); }
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }

/* ---------- 入场动画 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .reveal { opacity: 1; transform: none; transition: none; } }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
	.hero__inner { grid-template-columns: 1fr; gap: 40px; padding-top: 56px; padding-bottom: 60px; }
	.feat-grid { grid-template-columns: repeat(2, 1fr); }
	.product-grid, .scene-grid, .case-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
	.databand__inner { grid-template-columns: repeat(2, 1fr); }
	.contact { grid-template-columns: 1fr; gap: 40px; }
	.site-footer__grid { grid-template-columns: 1fr 1fr; }
	.product-single { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
	.nav-toggle { display: flex; }
	.site-header__actions .btn { display: none; }
	.site-nav { position: fixed; top: 0; right: 0; bottom: 0; z-index: 200; width: min(320px, 84vw); background: var(--c-bg); box-shadow: -20px 0 60px rgba(23, 34, 46, .2); padding: 84px 28px 28px; transform: translateX(100%); transition: transform .3s ease; overflow-y: auto; }
	.site-nav.is-open { transform: translateX(0); }
	.site-nav__list { flex-direction: column; gap: 4px; }
	.site-nav__list a { padding: 13px 14px; font-size: 16px; }
	.site-nav__list .sub-menu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; padding: 0 0 0 18px; margin: 0; background: transparent; }
	.nav-toggle { position: relative; z-index: 210; }
	body.nav-open { overflow: hidden; }
}
@media (max-width: 620px) {
	.section { padding: 60px 0; }
	.feat-grid, .product-grid, .scene-grid, .case-grid, .news-grid { grid-template-columns: 1fr; }
	.databand__inner { grid-template-columns: 1fr 1fr; }
	.post-card { grid-template-columns: 1fr; }
	.post-card__thumb { aspect-ratio: 16 / 9; overflow: hidden; }
	.site-footer__grid { grid-template-columns: 1fr; gap: 32px; }
	.entry { padding: 26px 22px; }
	.comments-area { padding: 26px 22px; }
	.contact__form-wrap { padding: 26px 22px; }
}

/* 优化 · 全局尊重系统"减少动态效果"（覆盖装饰性 keyframes 动画） */
@media (prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important;}}

/* ==========================================================================
   美化优化 v1.1 · 2026-07 — 化工蓝分子网格风精修
   ========================================================================== */
/* 通用 UX */
html { scroll-padding-top: 86px; }
h1, h2, h3 { text-wrap: balance; }
p { text-wrap: pretty; }
.btn:active { transform: translateY(0) scale(.98); transition-duration: .09s; }

/* 主按钮:渐变缓移 */
.btn--primary { background-size: 170% 100%; transition: transform .2s ease, box-shadow .2s ease, background-position .45s ease, color .2s ease; }
.btn--primary:hover { background-position: 80% 0; }

/* 导航:当前项蓝底常亮 */
.site-nav__list > li.current-menu-item > a { color: var(--c-blue); background: rgba(30, 95, 168, .08); }

/* 首屏分子网格:缓慢漂移(晶格呼吸感) */
@keyframes pw-meshdrift {
	from { background-position: 0 0, 0 0, 0 0; }
	to { background-position: 40px 40px, 40px 40px, 40px 40px; }
}
.hero__mesh { animation: pw-meshdrift 22s linear infinite; }

/* 参数行:悬停滑入 + 参数值放大 */
.specrows li { transition: transform .22s ease, background .22s ease; }
.specrows li:hover { transform: translateX(4px); background: rgba(30, 95, 168, .07); }
.specrows code { transition: transform .22s ease; display: inline-block; }
.specrows li:hover code { transform: scale(1.08); }

/* 材质表:行悬停参数着色 */
.mtable tbody tr { transition: background .2s ease; }
.mtable td:first-child { transition: color .2s ease; }
.mtable tbody tr:hover td:first-child { color: var(--c-blue); }

/* 产品卡:图区微缩放 */
.product-card__media { overflow: hidden; }
.product-card__media img, .product-card__ph { transition: transform .45s ease; }
.product-card:hover .product-card__media img,
.product-card:hover .product-card__ph { transform: scale(1.05); }

/* 表单:聚焦化工蓝环 */
.contact-form input:focus, .contact-form textarea:focus { box-shadow: 0 0 0 4px rgba(30, 95, 168, .13); }

/* 页脚:顶部蓝青发丝线 + 链接滑入 */
.site-footer { position: relative; }
.site-footer::before {
	content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px; opacity: .8;
	background: linear-gradient(90deg, transparent, var(--c-blue) 35%, var(--c-cyan) 65%, transparent);
}
.site-footer__menu a { transition: color .2s ease, padding-left .2s ease; }
.site-footer__menu a:hover { padding-left: 6px; }

/* 减动效 */
@media (prefers-reduced-motion: reduce) {
	.hero__mesh { animation: none; }
}