/* ==========================================================================
   激光打标机.cn — 全站样式
   浅色主题 · 工业科技风 · 响应式（断点 900 / 768 / 420）
   ========================================================================== */

:root {
  --brand: #16406f;
  --brand-deep: #0e2c4e;
  --brand-soft: #e8eff8;
  --accent: #d93b26;
  --accent-soft: #fdecea;
  --beam: #2f7fd1;
  --ink: #18222f;
  --ink-2: #3c4859;
  --muted: #64707f;
  --line: #dfe5ec;
  --line-2: #eef2f7;
  --bg: #ffffff;
  --bg-2: #f5f8fb;
  --bg-3: #eef3f9;
  --ok: #1f7a4d;
  --warn: #a86416;
  --wrap: 1180px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(22, 64, 111, .06), 0 8px 24px rgba(22, 64, 111, .06);
  --shadow-lg: 0 2px 6px rgba(22, 64, 111, .08), 0 18px 44px rgba(22, 64, 111, .1);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg);
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; height: auto; }
a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--accent); }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }

.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 12px; top: 12px; z-index: 99; background: #fff; padding: 8px 14px; border-radius: 6px; }

/* ---------- 域名在售横幅 ---------- */
.sale-bar {
  background: linear-gradient(90deg, var(--accent) 0%, #b8301d 100%);
  color: #fff;
  font-size: 14px;
  line-height: 1.5;
}
.sale-bar .wrap {
  display: flex; align-items: center; gap: 12px;
  padding-top: 9px; padding-bottom: 9px;
  flex-wrap: wrap;
}
.sale-bar .tag {
  background: rgba(255, 255, 255, .2);
  border: 1px solid rgba(255, 255, 255, .45);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  white-space: nowrap;
}
.sale-bar strong { font-weight: 700; }
.sale-bar a { color: #fff; text-decoration: underline; text-underline-offset: 3px; font-weight: 600; white-space: nowrap; }
.sale-bar a:hover { color: #ffe6e0; }
.sale-bar .spacer { flex: 1 1 auto; }

/* ---------- 头部 / 导航 ---------- */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 30;
}
.header-inner {
  display: flex; align-items: center; gap: 18px;
  min-height: 66px;
  flex-wrap: nowrap;
}
.brand { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.brand-mark {
  width: 34px; height: 34px; flex: 0 0 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--brand) 0%, var(--beam) 100%);
  display: grid; place-items: center;
  color: #fff; font-size: 15px; font-weight: 800; letter-spacing: -.02em;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text b { font-size: 16.5px; color: var(--ink); letter-spacing: -.01em; }
.brand-text span { font-size: 11.5px; color: var(--muted); letter-spacing: .02em; }

.nav { margin-left: auto; display: flex; align-items: center; gap: 2px; }
.nav a {
  display: block;
  padding: 8px 12px;
  border-radius: 7px;
  font-size: 14.5px;
  color: var(--ink-2);
  white-space: nowrap;
}
.nav a:hover { background: var(--bg-3); color: var(--brand); }
.nav a.is-active { background: var(--brand-soft); color: var(--brand); font-weight: 600; }
.nav a.nav-cta {
  background: var(--brand); color: #fff; font-weight: 600;
  margin-left: 6px;
}
.nav a.nav-cta:hover { background: var(--accent); color: #fff; }

.nav-toggle, .nav-toggle-label { display: none; }

/* ---------- 通用区块 ---------- */
.section { padding: 62px 0; }
.section.tint { background: var(--bg-2); border-top: 1px solid var(--line-2); border-bottom: 1px solid var(--line-2); }
.section-head { max-width: 780px; margin-bottom: 34px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 {
  font-size: 28px; line-height: 1.35; margin: 0 0 12px;
  letter-spacing: -.015em; color: var(--ink);
}
.section-head p { margin: 0; color: var(--muted); font-size: 15.5px; }
.eyebrow {
  display: inline-block;
  font-size: 12.5px; font-weight: 700; letter-spacing: .1em;
  color: var(--accent); text-transform: uppercase;
  margin-bottom: 8px;
}

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(900px 420px at 82% -12%, rgba(47, 127, 209, .14), transparent 62%),
    radial-gradient(700px 380px at 6% 108%, rgba(217, 59, 38, .08), transparent 60%),
    linear-gradient(180deg, #f7fafd 0%, #ffffff 78%);
  border-bottom: 1px solid var(--line-2);
  padding: 66px 0 58px;
}
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 52px; align-items: start; }
.hero h1 {
  font-size: 38px; line-height: 1.28; margin: 0 0 18px;
  letter-spacing: -.022em; color: var(--ink);
}
.hero h1 em { font-style: normal; color: var(--brand); }
.hero .lede { font-size: 17px; color: var(--ink-2); margin: 0 0 26px; max-width: 620px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 26px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 9px;
  font-size: 15px; font-weight: 600; line-height: 1.2;
  border: 1px solid transparent; cursor: pointer;
  transition: background .18s, color .18s, border-color .18s, transform .18s;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-deep); color: #fff; transform: translateY(-1px); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: #b8301d; color: #fff; transform: translateY(-1px); }
.btn-ghost { background: #fff; color: var(--brand); border-color: #c6d6e8; }
.btn-ghost:hover { background: var(--brand-soft); color: var(--brand); border-color: #a9c2dc; }
.btn-sm { padding: 9px 16px; font-size: 14px; }

.hero-facts { display: flex; flex-wrap: wrap; gap: 10px 26px; padding-top: 20px; border-top: 1px solid var(--line); }
.hero-facts div { font-size: 13.5px; color: var(--muted); }
.hero-facts b { display: block; font-size: 21px; color: var(--brand); letter-spacing: -.02em; line-height: 1.3; }

/* Hero 右侧：在售信息卡 */
.sale-card {
  background: #fff;
  border: 1px solid #f0cfc9;
  border-top: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 26px 24px;
  box-shadow: var(--shadow-lg);
}
.sale-card .flag {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--accent-soft); color: var(--accent);
  font-size: 12.5px; font-weight: 700; letter-spacing: .04em;
  border-radius: 999px; padding: 4px 12px; margin-bottom: 14px;
}
.sale-card .flag i { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); display: block; }
.sale-card h3 { margin: 0 0 6px; font-size: 24px; letter-spacing: -.01em; color: var(--ink); }
.sale-card .sub { margin: 0 0 18px; font-size: 13.5px; color: var(--muted); }
.kv { list-style: none; margin: 0 0 20px; padding: 0; font-size: 14px; }
.kv li { display: flex; gap: 12px; padding: 7px 0; border-bottom: 1px dashed var(--line); }
.kv li:last-child { border-bottom: 0; }
.kv span { flex: 0 0 84px; color: var(--muted); }
.kv b { font-weight: 600; color: var(--ink); word-break: break-all; }
.sale-card .btn { width: 100%; }
.sale-card .note { margin: 12px 0 0; font-size: 12.5px; color: var(--muted); text-align: center; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(212px, 1fr)); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 22px;
  display: flex; flex-direction: column;
  min-width: 0;
  transition: border-color .18s, box-shadow .18s, transform .18s;
}
.card:hover { border-color: #c3d5e8; box-shadow: var(--shadow); transform: translateY(-2px); }
.card-ico {
  width: 42px; height: 42px; border-radius: 10px;
  display: grid; place-items: center;
  background: var(--brand-soft); color: var(--brand);
  font-size: 18px; font-weight: 700; margin-bottom: 14px;
}
.card h3 { margin: 0 0 8px; font-size: 18px; letter-spacing: -.01em; }
.card h3 a { color: inherit; }
.card h3 a:hover { color: var(--brand); }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; }
.card .meta { margin-top: 14px; font-size: 13px; color: var(--muted); display: flex; gap: 10px; flex-wrap: wrap; }
.card .more { margin-top: auto; padding-top: 16px; font-size: 14px; font-weight: 600; }
.card .more a::after { content: " →"; }
.card .pill {
  display: inline-block; background: var(--bg-3); color: var(--ink-2);
  font-size: 12px; padding: 2px 9px; border-radius: 999px;
}

/* ---------- 表格 ---------- */
.table-scroll { overflow-x: auto; margin: 22px 0; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; min-width: 620px; }
thead th {
  background: var(--bg-3); color: var(--ink);
  text-align: left; font-weight: 600;
  padding: 12px 16px; border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
tbody td { padding: 12px 16px; border-bottom: 1px solid var(--line-2); color: var(--ink-2); vertical-align: top; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:nth-child(even) { background: #fbfcfe; }
tbody td strong { color: var(--ink); }

/* ---------- 文章 / 长文排版 ---------- */
.article-hero {
  background: linear-gradient(180deg, #f7fafd 0%, #fff 100%);
  border-bottom: 1px solid var(--line-2);
  padding: 44px 0 38px;
}
.article-hero h1 { font-size: 32px; line-height: 1.32; margin: 0 0 14px; letter-spacing: -.02em; max-width: 900px; }
.article-hero .lede { font-size: 16.5px; color: var(--muted); margin: 0; max-width: 820px; }
.article-hero .post-meta { display: flex; gap: 16px; flex-wrap: wrap; font-size: 13.5px; color: var(--muted); margin-top: 18px; }

.layout-doc { display: grid; grid-template-columns: minmax(0, 1fr) 286px; gap: 48px; align-items: start; padding: 44px 0 64px; }

.article-body { min-width: 0; font-size: 16.5px; color: var(--ink-2); }
.article-body > *:first-child { margin-top: 0; }
.article-body h2 {
  font-size: 24px; line-height: 1.4; color: var(--ink);
  margin: 46px 0 16px; padding-top: 10px;
  letter-spacing: -.015em;
  border-top: 2px solid var(--line-2);
}
.article-body h2:first-of-type { border-top: 0; padding-top: 0; margin-top: 8px; }
.article-body h3 { font-size: 18.5px; line-height: 1.45; color: var(--ink); margin: 30px 0 10px; letter-spacing: -.01em; }
.article-body h4 { font-size: 16.5px; color: var(--ink); margin: 22px 0 8px; }
.article-body p { margin: 0 0 16px; }
.article-body strong { color: var(--ink); font-weight: 600; }
.article-body ul, .article-body ol { margin: 0 0 18px; padding-left: 22px; }
.article-body li { margin-bottom: 8px; }
.article-body li > ul, .article-body li > ol { margin-top: 8px; margin-bottom: 4px; }
.article-body code {
  background: var(--bg-3); border: 1px solid var(--line);
  border-radius: 5px; padding: 1px 6px;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace; font-size: 14px;
}
.article-body hr { border: 0; border-top: 1px solid var(--line); margin: 38px 0; }
.article-body blockquote {
  margin: 22px 0; padding: 16px 20px;
  background: var(--bg-2); border-left: 4px solid var(--beam);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--ink-2); font-size: 15.5px;
}
.article-body blockquote p:last-child { margin-bottom: 0; }

.callout {
  margin: 24px 0; padding: 18px 22px;
  border-radius: var(--radius);
  border: 1px solid #cfe0f2; background: #f4f9ff;
  font-size: 15.5px; color: var(--ink-2);
}
.callout.warn { border-color: #f0d9b8; background: #fff8ef; }
.callout.sale { border-color: #f0cfc9; background: var(--accent-soft); }
.callout b.title { display: block; color: var(--ink); margin-bottom: 6px; font-size: 15.5px; }
.callout p:last-child { margin-bottom: 0; }

/* 侧栏 */
.side { position: sticky; top: 84px; display: flex; flex-direction: column; gap: 18px; }
.side-box { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.side-box h4 { margin: 0 0 12px; font-size: 15px; color: var(--ink); }
.side-box ol, .side-box ul { margin: 0; padding-left: 20px; font-size: 14px; }
.side-box li { margin-bottom: 8px; color: var(--muted); }
.side-box li a { color: var(--ink-2); }
.side-box li a:hover { color: var(--brand); }
.side-box.side-sale { border-color: #f0cfc9; background: linear-gradient(180deg, #fff 0%, #fef7f5 100%); }
.side-box.side-sale p { font-size: 14px; color: var(--ink-2); margin: 0 0 14px; }
.side-box .btn { width: 100%; }

/* ---------- 首页长文导览 ---------- */
.toc-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.toc-list li {
  display: flex; gap: 16px; align-items: baseline;
  padding: 16px 20px; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  min-width: 0;
}
.toc-list .num {
  flex: 0 0 28px; font-weight: 800; font-size: 14px;
  color: var(--brand); letter-spacing: .02em;
}
.toc-list .body { min-width: 0; }
.toc-list b { display: block; color: var(--ink); font-size: 16px; margin-bottom: 3px; }
.toc-list span { color: var(--muted); font-size: 14px; }

/* ---------- 域名价值页 ---------- */
.value-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(268px, 1fr)); gap: 18px; }
.value-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; min-width: 0; }
.value-item .v-ico { font-size: 17px; font-weight: 800; color: var(--accent); margin-bottom: 10px; letter-spacing: .04em; }
.value-item h3 { margin: 0 0 8px; font-size: 17px; }
.value-item p { margin: 0; font-size: 14.5px; color: var(--muted); }
.value-item ul { margin: 10px 0 0; padding-left: 20px; font-size: 14px; color: var(--muted); }
.value-item li { margin-bottom: 6px; }

.domain-showcase {
  background: linear-gradient(135deg, var(--brand-deep) 0%, #1d5490 100%);
  border-radius: var(--radius);
  padding: 40px 36px;
  color: #fff;
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 30px; align-items: center;
}
.domain-showcase .dn { font-size: 34px; font-weight: 700; letter-spacing: .01em; margin: 0 0 6px; word-break: break-all; }
.domain-showcase .pny { font-size: 13px; color: #a9c8e8; margin: 0 0 16px; word-break: break-all; font-family: ui-monospace, Consolas, monospace; }
.domain-showcase p.desc { margin: 0; color: #d5e5f5; font-size: 15px; max-width: 620px; }
.domain-showcase .actions { display: flex; flex-direction: column; gap: 10px; }

/* 交易流程 / 步骤 */
.steps { list-style: none; margin: 0; padding: 0; counter-reset: step; display: grid; gap: 14px; }
.steps li {
  position: relative; padding: 16px 20px 16px 60px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm);
  font-size: 15px; color: var(--ink-2); min-width: 0;
}
.steps li::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 18px; top: 15px;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--brand); color: #fff;
  display: grid; place-items: center;
  font-size: 13.5px; font-weight: 700;
}
.steps li b { color: var(--ink); display: block; margin-bottom: 3px; }

/* ---------- FAQ ---------- */
.faq-list { display: grid; gap: 12px; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; }
.faq-item summary {
  cursor: pointer; list-style: none;
  padding: 17px 22px; font-size: 16.5px; font-weight: 600; color: var(--ink);
  display: flex; gap: 14px; align-items: flex-start;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before {
  content: "Q"; flex: 0 0 24px;
  color: var(--accent); font-weight: 800; font-size: 14px; line-height: 1.7;
}
.faq-item summary::after {
  content: "+"; margin-left: auto; color: var(--muted);
  font-size: 20px; line-height: 1; font-weight: 400;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item[open] summary { background: var(--bg-2); border-bottom: 1px solid var(--line-2); }
.faq-answer { padding: 16px 22px 20px 60px; font-size: 15.5px; color: var(--ink-2); }
.faq-answer p { margin: 0 0 12px; }
.faq-answer p:last-child { margin-bottom: 0; }
.faq-answer ul { margin: 0 0 12px; padding-left: 20px; }

/* ---------- 联系 / CTA ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--brand-deep) 0%, #1d5490 100%);
  border-radius: var(--radius);
  padding: 44px 40px;
  color: #fff;
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 32px; align-items: center;
}
.cta-band h2 { margin: 0 0 10px; font-size: 26px; letter-spacing: -.015em; color: #fff; }
.cta-band p { margin: 0; color: #cfdff0; font-size: 15.5px; max-width: 640px; }
.cta-band .actions { display: flex; flex-direction: column; gap: 10px; }
.cta-band .btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.cta-band .btn-ghost:hover { background: rgba(255,255,255,.14); color: #fff; border-color: #fff; }

.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; }
.contact-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; min-width: 0; }
.contact-card h3 { margin: 0 0 8px; font-size: 17px; }
.contact-card p { margin: 0 0 14px; color: var(--muted); font-size: 14.5px; }
.mailto-big {
  display: block; word-break: break-all;
  font-size: 17px; font-weight: 700; color: var(--brand);
  background: var(--brand-soft); border-radius: var(--radius-sm);
  padding: 13px 16px; text-align: center;
}
.mailto-big:hover { background: #dbe8f6; color: var(--brand-deep); }

/* ---------- 页脚 ---------- */
.site-footer { background: #10243c; color: #b6c6d8; padding: 52px 0 26px; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 34px; }
.site-footer h4 { color: #fff; font-size: 15px; margin: 0 0 14px; }
.site-footer p { margin: 0 0 12px; line-height: 1.7; }
.site-footer a { color: #b6c6d8; }
.site-footer a:hover { color: #fff; }
.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-links li { margin-bottom: 9px; }
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-brand .brand-mark { background: linear-gradient(135deg, #2f7fd1 0%, #55a3e8 100%); }
.footer-brand b { color: #fff; font-size: 16px; }
.footer-sale {
  margin-top: 16px; padding: 12px 14px;
  background: rgba(217, 59, 38, .16);
  border: 1px solid rgba(217, 59, 38, .45);
  border-radius: var(--radius-sm);
  color: #ffd9d2; font-size: 13.5px; line-height: 1.65;
}
.footer-bottom {
  margin-top: 38px; padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,.12);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 13px; color: #8ba0b8;
}

/* ---------- 配图 ---------- */
.figure { margin: 30px 0; }
.figure img {
  width: 100%; height: auto; display: block;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: #fff;
}
.figure figcaption { margin-top: 12px; font-size: 14px; color: var(--muted); line-height: 1.7; }

/* ---------- 网站地图页 ---------- */
.map-list {
  list-style: none; margin: 0 0 34px; padding: 0;
  display: grid; gap: 8px;
}
.map-list li {
  display: flex; align-items: baseline; gap: 14px;
  padding: 12px 16px; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  font-size: 15px; min-width: 0; margin-bottom: 0 !important;
}
.map-list li a { flex: 1; min-width: 0; }
.map-meta { flex: 0 0 auto; color: var(--muted); font-size: 13px; }

/* ---------- 404 ---------- */
.err-page { text-align: center; padding: 90px 0 100px; }
.err-page .code { font-size: 74px; font-weight: 800; color: var(--brand); letter-spacing: -.03em; line-height: 1; }
.err-page h1 { font-size: 25px; margin: 16px 0 12px; }
.err-page p { color: var(--muted); margin: 0 0 26px; }

/* ---------- 面包屑 ---------- */
.crumbs { font-size: 13.5px; color: var(--muted); padding: 16px 0 0; }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--brand); }
.crumbs span { margin: 0 7px; color: #b8c2ce; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .layout-doc { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .side { position: static; margin-top: 40px; display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 34px; }
  .hero h1 { font-size: 32px; }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
  .cta-band, .domain-showcase { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .cta-band .actions, .domain-showcase .actions { flex-direction: row; flex-wrap: wrap; }
}

@media (max-width: 768px) {
  .section { padding: 46px 0; }
  .hero { padding: 46px 0 42px; }
  .hero h1 { font-size: 27px; }
  .hero .lede { font-size: 15.5px; }
  .section-head h2 { font-size: 23px; }
  .article-hero h1 { font-size: 25px; }
  .article-body { font-size: 16px; }
  .article-body h2 { font-size: 21px; margin-top: 38px; }
  .article-body h3 { font-size: 17.5px; }
  table { min-width: 540px; }
  .domain-showcase { padding: 30px 22px; }
  .domain-showcase .dn { font-size: 26px; }
  .cta-band { padding: 32px 24px; }
  .cta-band h2 { font-size: 22px; }

  /* 移动导航：checkbox hack */
  .nav-toggle-label {
    display: flex; align-items: center; justify-content: center;
    margin-left: auto; width: 42px; height: 38px;
    border: 1px solid var(--line); border-radius: 8px;
    cursor: pointer; flex-direction: column; gap: 4px;
  }
  .nav-toggle-label i { display: block; width: 18px; height: 2px; background: var(--ink-2); border-radius: 2px; }
  .nav {
    display: none;
    position: absolute; left: 0; right: 0; top: 100%;
    background: #fff; border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch; gap: 0;
    padding: 8px 14px 16px;
    box-shadow: 0 14px 30px rgba(16, 36, 60, .1);
  }
  .nav a { padding: 12px 10px; border-radius: 8px; font-size: 15.5px; }
  .nav a.nav-cta { margin: 8px 0 0; text-align: center; }
  .nav-toggle:checked ~ .nav { display: flex; }
  .header-inner { position: relative; }
}

@media (max-width: 560px) {
  .grid-3, .grid-2 { grid-template-columns: minmax(0, 1fr); }
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .cta-band .actions, .domain-showcase .actions { flex-direction: column; }
  .cta-band .actions .btn, .domain-showcase .actions .btn { width: 100%; }
  .map-list li { flex-direction: column; gap: 4px; }
}

@media (max-width: 420px) {
  body { font-size: 15.5px; }
  .hero h1 { font-size: 24px; }
  .hero-facts { gap: 12px; }
  .hero-facts b { font-size: 18px; }
  .brand-text span { display: none; }
  .sale-bar { font-size: 13px; }
  .faq-answer { padding-left: 22px; }
  .toc-list li { padding: 14px 16px; }
  table { min-width: 480px; font-size: 13.5px; }
  thead th, tbody td { padding: 10px 12px; }
}

/* ============================================================
   产品中心 / 产品详情页
   ============================================================ */

/* ---------- 产品页 Hero ---------- */
.product-hero {
  background:
    radial-gradient(900px 420px at 84% -14%, rgba(47, 127, 209, .16), transparent 62%),
    radial-gradient(700px 360px at 4% 106%, rgba(217, 59, 38, .07), transparent 60%),
    linear-gradient(180deg, #f7fafd 0%, #ffffff 82%);
  border-bottom: 1px solid var(--line-2);
  padding: 0 0 46px;
}
.ph-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.04fr);
  gap: 46px; align-items: center; padding-top: 22px;
}
.ph-copy { min-width: 0; }
.ph-copy h1 {
  font-size: 36px; line-height: 1.24; margin: 14px 0 16px;
  letter-spacing: -.024em; color: var(--ink);
}
.ph-copy h1 .model {
  display: block; margin-top: 9px;
  font-size: 15px; font-weight: 600; letter-spacing: .02em; color: var(--muted);
}
.ph-copy .lede { font-size: 16.5px; color: var(--ink-2); margin: 0 0 22px; }
.ph-points { list-style: none; margin: 0 0 26px; padding: 0; display: grid; gap: 10px; }
.ph-points li { position: relative; padding-left: 26px; font-size: 15px; color: var(--ink-2); line-height: 1.65; }
.ph-points li::before {
  content: ""; position: absolute; left: 6px; top: 9px;
  width: 9px; height: 9px; border-radius: 2px;
  background: var(--brand); transform: rotate(45deg);
}
.ph-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 18px; }
.ph-note { font-size: 13.5px; color: var(--muted); margin: 0; line-height: 1.7; }
.ph-visual { margin: 0; min-width: 0; }
.ph-visual img {
  width: 100%; height: auto; display: block;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: #fff; box-shadow: var(--shadow);
}
.ph-visual figcaption { margin-top: 10px; font-size: 13px; color: var(--muted); text-align: center; }

/* ---------- 参数条 ---------- */
.spec-band { background: #fff; padding: 0 0 6px; margin-top: -30px; position: relative; z-index: 2; }
.spec-strip { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(166px, 1fr)); }
.spec-card {
  background: #fff; border: 1px solid var(--line); border-top: 3px solid var(--brand);
  border-radius: var(--radius-sm); padding: 15px 17px 17px;
  display: flex; flex-direction: column; gap: 4px; min-width: 0;
  box-shadow: var(--shadow);
}
.sc-label { font-size: 13px; color: var(--muted); }
.sc-value {
  font-size: 27px; line-height: 1.16; font-weight: 700; color: var(--brand);
  letter-spacing: -.02em; font-variant-numeric: tabular-nums;
}
.sc-value i { font-size: 14px; font-style: normal; font-weight: 600; margin-left: 2px; color: var(--ink-2); }
.sc-note { font-size: 12.5px; color: var(--muted); line-height: 1.5; }

/* ---------- 配置清单 ---------- */
.config-card {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px 24px; min-width: 0;
}
.config-card h3 {
  margin: 0 0 16px; font-size: 18px; color: var(--ink);
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.cfg-tag { font-size: 12px; font-weight: 700; letter-spacing: .02em; padding: 3px 10px; border-radius: 999px; }
.cfg-tag.std { background: var(--brand-soft); color: var(--brand); }
.cfg-tag.opt { background: #fff4e2; color: var(--warn); }
.cfg-list { list-style: none; margin: 0; padding: 0; }
.cfg-list li {
  position: relative; padding: 12px 0 12px 24px;
  border-top: 1px solid var(--line-2);
  font-size: 14.5px; color: var(--muted); line-height: 1.6;
  display: flex; flex-direction: column; gap: 3px;
}
.cfg-list li:first-child { border-top: 0; padding-top: 4px; }
.cfg-list li:first-child::before { top: 11px; }
.cfg-list li::before {
  content: ""; position: absolute; left: 4px; top: 19px;
  width: 7px; height: 7px; border-radius: 50%; background: var(--beam);
}
.cfg-list li b { color: var(--ink); font-weight: 600; font-size: 15px; }

/* ---------- 产品中心列表 ---------- */
.product-grid { display: grid; gap: 22px; }
.product-card {
  display: grid; grid-template-columns: minmax(0, 38fr) minmax(0, 62fr);
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; color: inherit;
  transition: border-color .18s, box-shadow .18s, transform .18s;
}
.product-card:hover { border-color: #b9cde4; box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.pc-media {
  background: linear-gradient(160deg, #f4f8fc 0%, #e9f0f9 100%);
  display: flex; align-items: center; justify-content: center; padding: 18px;
}
.pc-media img { max-width: 100%; max-height: 330px; width: auto; height: auto; display: block; }
.pc-body { padding: 26px 26px 24px; display: flex; flex-direction: column; min-width: 0; }
.pc-tags { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.pc-body h3 { margin: 0 0 10px; font-size: 21px; line-height: 1.35; color: var(--ink); }
.pc-body h3 .pc-model { display: block; margin-top: 5px; font-size: 13px; font-weight: 600; color: var(--muted); }
.pc-body p { margin: 0 0 16px; font-size: 14.5px; color: var(--muted); line-height: 1.72; }
.pc-specs { list-style: none; margin: 0 0 18px; padding: 0; }
.pc-specs li {
  display: flex; justify-content: space-between; gap: 14px;
  padding: 8px 0; border-top: 1px solid var(--line-2);
  font-size: 13.5px; color: var(--muted);
}
.pc-specs li b { color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }
.pc-foot { margin-top: auto; padding-top: 6px; font-size: 14.5px; font-weight: 600; color: var(--brand); }
.list-note { margin: 24px 0 0; font-size: 14px; color: var(--muted); line-height: 1.7; }

/* ---------- 机型状态卡 ---------- */
.type-status { font-size: 11.5px; font-weight: 700; letter-spacing: .02em; padding: 3px 9px; border-radius: 999px; }
.type-status.live { background: #e6f4ec; color: var(--ok); }
.type-status.pending { background: var(--bg-3); color: var(--muted); }
.type-card { position: relative; }
.type-card .pill { align-self: flex-start; }
.type-card h3 { margin: 12px 0 8px; }
.type-card .type-status { position: absolute; top: 22px; right: 20px; }
.type-card.is-pending { opacity: .8; }
.type-card.is-pending h3 { color: var(--ink-2); }
a.card, a.card:hover { color: inherit; text-decoration: none; }
a.card h3 { color: var(--ink); }

/* ---------- 产品页响应式 ---------- */
@media (max-width: 1024px) {
  .ph-grid { grid-template-columns: minmax(0, 1fr); gap: 34px; }
  .ph-copy h1 { font-size: 31px; }
  .spec-band { margin-top: -16px; }
}
@media (max-width: 900px) {
  .product-card { grid-template-columns: minmax(0, 1fr); }
  .pc-media { padding: 22px; }
  .pc-media img { max-height: 300px; }
}
@media (max-width: 768px) {
  .product-hero { padding-bottom: 34px; }
  .ph-copy h1 { font-size: 27px; }
  .ph-copy .lede { font-size: 15.5px; }
  .sc-value { font-size: 24px; }
  .spec-band { margin-top: 0; padding-top: 8px; }
  .pc-body { padding: 22px 20px; }
}
@media (max-width: 560px) {
  .config-card { padding: 20px 18px; }
  .ph-actions .btn { width: 100%; }
}