/* ============================================================
   SimSmsBox 主站全局设计系统
   暗色高级渐变主题 · 轻量无框架 · 兼顾营销页与博客/教程阅读排版
   ============================================================ */
:root {
  --bg: #0a0e1c;
  --bg-soft: #0f1730;
  --bg-elevated: #131d3b;
  --card: #141e3c;
  --card-hover: #18254a;
  --line: #21305a;
  --line-soft: #1a2645;
  --text: #eaf0fb;
  --text-strong: #ffffff;
  --muted: #9aa6c2;
  --muted-2: #71809e;
  --brand: #4f8cff;
  --brand-2: #7c5cff;
  --brand-3: #22d3ee;
  --accent: #34d399;
  --warn: #fbbf24;
  --ring: rgba(79, 140, 255, 0.35);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --maxw: 1140px;
  --maxw-reading: 760px;
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.25);
  --shadow: 0 12px 40px rgba(3, 7, 18, 0.5);
  --grad: linear-gradient(135deg, var(--brand), var(--brand-2));
  --grad-soft: linear-gradient(135deg, rgba(79, 140, 255, 0.16), rgba(124, 92, 255, 0.16));
  /* 主题相关（暗色为默认）：背景 / 导航 / 代码块 */
  --body-bg:
    radial-gradient(1100px 560px at 85% -12%, #1c2c58 0%, transparent 58%),
    radial-gradient(900px 500px at 0% 0%, #16204a 0%, transparent 55%),
    var(--bg);
  --nav-bg: rgba(10, 14, 28, 0.72);
  --code-bg: #070b18;
  --code-inline-bg: #0b1126;
  --code-inline-fg: #c7d2fe;
  /* 可读性强调色：标签/链接/正文（随主题切换，保证对比度） */
  --link: #bcd0ff;
  --link-strong: #8fb4ff;
  --tag-fg: #bcd0ff;
  --prose-body: #d6deef;
}

/* ====== 浅色（白）主题 ====== */
:root[data-theme="light"] {
  --bg: #ffffff;
  --bg-soft: #f5f8fd;
  --bg-elevated: #eef3fb;
  --card: #ffffff;
  --card-hover: #f7faff;
  --line: #e4eaf3;
  --line-soft: #eef2f8;
  --text: #1b2942;
  --text-strong: #0a1322;
  --muted: #5b6a85;
  --muted-2: #8493ab;
  --ring: rgba(79, 140, 255, 0.22);
  --shadow-sm: 0 2px 10px rgba(20, 40, 80, 0.08);
  --shadow: 0 14px 40px rgba(20, 40, 80, 0.12);
  --grad-soft: linear-gradient(135deg, rgba(79, 140, 255, 0.10), rgba(124, 92, 255, 0.10));
  --body-bg:
    radial-gradient(1100px 560px at 85% -12%, #e8f0ff 0%, transparent 58%),
    radial-gradient(900px 500px at 0% 0%, #eef4ff 0%, transparent 55%),
    var(--bg);
  --nav-bg: rgba(255, 255, 255, 0.80);
  /* 浅色主题：强调色加深，保证白底对比度 */
  --link: #2f53d6;
  --link-strong: #2447c7;
  --tag-fg: #2f53d6;
  --prose-body: #36435c;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  overflow-x: clip;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--body-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .25s ease, color .25s ease;
}
img { max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
hr { border: none; border-top: 1px solid var(--line); margin: 32px 0; }

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

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 12px; font-weight: 600; cursor: pointer;
  border: 1px solid transparent; transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease, background .15s ease;
  font-size: 15px; white-space: nowrap;
}
.btn-primary { background: linear-gradient(135deg, #3a6fe0, #6d44f0); color: #ffffff; font-weight: 700; box-shadow: 0 8px 30px var(--ring); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 38px var(--ring); background: linear-gradient(135deg, #4a7cf0, #7d54ff); }
.btn-ghost { border-color: var(--line); color: var(--text); }
.btn-ghost:hover { border-color: var(--brand); background: rgba(79,140,255,.08); }
.btn-sm { padding: 8px 16px; font-size: 14px; border-radius: 10px; }

/* ---------- 通用版块 ---------- */
.section { padding: 76px 0; }
.section.alt { background: var(--bg-soft); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.section h2 { text-align: center; font-size: clamp(26px, 4vw, 38px); margin: 0 0 10px; letter-spacing: -.5px; }
.section-sub { text-align: center; color: var(--muted); margin: 0 auto 44px; max-width: 620px; }
.eyebrow { display: inline-block; padding: 6px 14px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 13px; }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- 卡片 ---------- */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; transition: transform .18s ease, border-color .18s ease, background .18s ease; }
.card:hover { border-color: #2c3e70; }

/* ---------- 标签 ---------- */
.tag { display: inline-flex; align-items: center; padding: 3px 11px; font-size: 12.5px; font-weight: 600; border-radius: 999px; background: var(--grad-soft); color: var(--tag-fg); border: 1px solid var(--line); }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; }

/* ---------- 顶部导航 ---------- */
.nav { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(12px); background: var(--nav-bg); border-bottom: 1px solid var(--line-soft); }
.theme-toggle { width: 38px; height: 38px; padding: 0; justify-content: center; font-size: 16px; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { font-weight: 800; font-size: 20px; display: flex; align-items: center; gap: 9px; color: var(--text-strong); }
.brand .logo { display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 9px; background: var(--grad); box-shadow: 0 6px 18px var(--ring); font-size: 17px; }
.brand .logo-img { width: 30px; height: 30px; display: block; }
.nav-links { display: flex; gap: 22px; color: var(--muted); font-size: 15px; }
.nav-links a { transition: color .15s ease; }
.nav-links a:hover { color: var(--text); }
.nav-cta { display: flex; gap: 10px; align-items: center; }
.nav-burger { display: none; width: 38px; height: 38px; padding: 0; justify-content: center; }
.mobile-nav { display: none; border-top: 1px solid var(--line-soft); background: var(--nav-bg); backdrop-filter: blur(12px); }
.mobile-nav .container { display: flex; flex-direction: column; padding-top: 6px; padding-bottom: 12px; }
.mobile-nav a { padding: 12px 2px; color: var(--muted); border-bottom: 1px solid var(--line-soft); font-size: 15px; }
.mobile-nav a:last-child { border-bottom: none; }
.mobile-nav a:hover, .mobile-nav a.is-active { color: var(--text); }
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-cta .hide-sm { display: none; }
  .nav-burger { display: inline-flex; }
  .mobile-nav.open { display: block; }
}

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line-soft); padding: 40px 0 28px; color: var(--muted); margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 28px; margin-bottom: 28px; }
.footer-grid h4 { color: var(--text); font-size: 14px; margin: 0 0 14px; }
.footer-grid a { display: block; color: var(--muted); padding: 5px 0; font-size: 14px; }
.footer-grid a:hover { color: var(--text); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; border-top: 1px solid var(--line-soft); padding-top: 20px; font-size: 13.5px; }
@media (max-width: 820px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; gap: 18px; } }

/* ---------- 文章卡片网格（博客 / 教程列表） ---------- */
.post-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 980px) { .post-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .post-grid { grid-template-columns: 1fr; } }
.post-card { display: flex; flex-direction: column; overflow: hidden; padding: 0; }
.post-card:hover { transform: translateY(-4px); border-color: var(--brand); background: var(--card-hover); }
.post-card .cover { height: 132px; background: var(--grad); position: relative; display: grid; place-items: center; font-size: 40px; overflow: hidden; }
.post-card .cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent, rgba(10,14,28,.35)); }
.post-card .cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.post-card .body { padding: 18px 20px 22px; display: flex; flex-direction: column; flex: 1; }
.post-card h3 { margin: 10px 0 8px; font-size: 18px; line-height: 1.4; color: var(--text-strong); }
.post-card p { color: var(--muted); margin: 0 0 16px; font-size: 14.5px; flex: 1; }
.post-meta { display: flex; gap: 10px; align-items: center; color: var(--muted-2); font-size: 13px; }
.post-readmore { color: var(--link); font-weight: 600; font-size: 14px; }

/* ---------- 列表分页（博客 / 教程） ---------- */
.pagination { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 8px; margin: 48px 0 8px; }
.pagination .pg-nums { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.pagination .pg-btn, .pagination .pg-num { display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 40px; padding: 0 14px; border: 1px solid var(--line); border-radius: 10px; color: var(--text); background: var(--card); font-size: 14.5px; font-weight: 600; transition: border-color .15s ease, background .15s ease, color .15s ease; }
.pagination .pg-num { padding: 0 6px; }
.pagination a.pg-btn:hover, .pagination a.pg-num:hover { border-color: var(--brand); color: var(--brand); background: var(--card-hover); }
.pagination .pg-num.is-current { background: var(--brand); border-color: var(--brand); color: #fff; cursor: default; }
.pagination .pg-btn.is-disabled { opacity: .4; pointer-events: none; }
.pagination .pg-gap { min-width: 24px; text-align: center; color: var(--muted-2); }
@media (max-width: 640px) { .pagination .pg-btn { padding: 0 10px; } .pagination .pg-num { min-width: 36px; height: 36px; } }

/* ---------- 列表分页（博客 / 教程） ---------- */
.pagination { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 8px; margin: 48px 0 8px; }
.pagination .pg-nums { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.pagination .pg-btn, .pagination .pg-num { display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 40px; padding: 0 14px; border: 1px solid var(--line); border-radius: 10px; color: var(--text); background: var(--card); font-size: 14.5px; font-weight: 600; transition: border-color .15s ease, background .15s ease, color .15s ease; }
.pagination .pg-num { padding: 0; }
.pagination a.pg-btn:hover, .pagination a.pg-num:hover { border-color: var(--brand); color: var(--brand); background: var(--card-hover); }
.pagination .pg-num.is-current { background: var(--brand); border-color: var(--brand); color: #fff; cursor: default; }
.pagination .pg-btn.is-disabled { opacity: .4; pointer-events: none; }
.pagination .pg-gap { min-width: 24px; text-align: center; color: var(--muted-2); }
@media (max-width: 640px) { .pagination .pg-btn { padding: 0 10px; } .pagination .pg-num { min-width: 36px; height: 36px; } }

/* ---------- 文章阅读排版（prose） ---------- */
.article-head { padding: 56px 0 8px; }
.breadcrumb { display: flex; gap: 8px; align-items: center; color: var(--muted-2); font-size: 13.5px; margin-bottom: 18px; }
.breadcrumb a:hover { color: var(--text); }
.article-title { font-size: clamp(28px, 4.4vw, 44px); line-height: 1.18; letter-spacing: -.6px; margin: 12px 0 14px; color: var(--text-strong); }
.article-sub { color: var(--muted); font-size: 18px; margin: 0 0 18px; }
.article-byline { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; color: var(--muted-2); font-size: 14px; }
.article-hero { margin: 22px 0 8px; border-radius: 14px; overflow: hidden; border: 1px solid var(--line); background: var(--grad); aspect-ratio: 1200 / 630; }
.article-hero img { display: block; width: 100%; height: 100%; object-fit: cover; }

.article-layout { display: grid; grid-template-columns: 1fr 220px; gap: 48px; align-items: start; padding: 32px 0 64px; }
@media (max-width: 940px) { .article-layout { grid-template-columns: 1fr; } .toc { display: none; } }
.toc { position: sticky; top: 88px; font-size: 14px; }
.toc h5 { color: var(--muted); text-transform: uppercase; letter-spacing: .08em; font-size: 12px; margin: 0 0 12px; }
.toc a { display: block; color: var(--muted-2); padding: 5px 0 5px 12px; border-left: 2px solid var(--line); transition: all .15s ease; }
.toc a:hover { color: var(--text); border-left-color: var(--brand); }
.toc a.depth-3 { padding-left: 24px; font-size: 13px; }

.prose { color: var(--text); font-size: 16.5px; line-height: 1.85; min-width: 0; overflow-wrap: break-word; }
.prose > :first-child { margin-top: 0; }
.prose h2 { font-size: 26px; margin: 44px 0 14px; letter-spacing: -.4px; scroll-margin-top: 84px; }
.prose h3 { font-size: 20px; margin: 32px 0 10px; scroll-margin-top: 84px; }
.prose p { margin: 16px 0; color: var(--prose-body); }
.prose a { color: var(--link-strong); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: color-mix(in srgb, var(--link-strong) 45%, transparent); }
.prose a:hover { text-decoration-color: var(--link-strong); }
.prose ul, .prose ol { padding-left: 22px; margin: 16px 0; color: var(--prose-body); }
.prose li { margin: 7px 0; }
.prose strong { color: var(--text-strong); }
.prose blockquote { margin: 22px 0; padding: 12px 20px; border-left: 3px solid var(--brand); background: var(--grad-soft); border-radius: 0 10px 10px 0; color: var(--prose-body); }
.prose code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9em; background: var(--code-inline-bg); border: 1px solid var(--line); border-radius: 6px; padding: 2px 6px; color: var(--code-inline-fg); }
.prose pre { background: var(--code-bg) !important; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; overflow: auto; margin: 22px 0; font-size: 14px; }
.prose pre code { background: none; border: none; padding: 0; color: var(--code-inline-fg); }
.prose img { display: block; max-width: 100%; height: auto; border-radius: var(--radius); border: 1px solid var(--line); margin: 22px 0; }
.prose figure { margin: 26px 0; }
.prose figure img { margin: 0; }
.prose figcaption { margin-top: 10px; text-align: center; color: var(--muted-2); font-size: 13.5px; line-height: 1.6; }
.prose table { display: block; width: 100%; overflow-x: auto; border-collapse: collapse; margin: 22px 0; font-size: 15px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; }
.prose th { background: var(--bg-elevated); color: var(--text-strong); }

/* ---------- 列表页头部横幅 ---------- */
.page-hero { padding: 80px 0 40px; text-align: center; }
.page-hero h1 { font-size: clamp(32px, 5vw, 52px); margin: 14px 0 12px; letter-spacing: -.8px; }
.page-hero p { color: var(--muted); font-size: 18px; max-width: 640px; margin: 0 auto; }

/* ---------- 文末上一篇/下一篇 & CTA ---------- */
.article-foot { border-top: 1px solid var(--line); margin-top: 40px; padding-top: 28px; }
.empty-note { text-align: center; color: var(--muted); padding: 48px 0; }

/* ---------- 浅色主题下行内代码更柔和 ---------- */
:root[data-theme="light"] .prose :not(pre) > code { background: #eef1f8; color: #4338ca; }
:root[data-theme="light"] .chip { box-shadow: var(--shadow-sm); }

/* ================= 首页（/ 与 /en）板块样式 =================
   为什么放这里（根因兜底）：首页这些板块类（如 .hero、.stats、.grid、.compare、.pricing、.dev、.res-x、.cta 等）
   注意：本注释内千万不要出现连续的 星号+斜杠 字符，否则会提前闭合本段 CSS 注释，
   导致紧随其后的 .hero 规则被并进一段无效选择器而被浏览器整体丢弃（首页 hero 就不再居中）。
   原本只写在 index.astro 的 scoped <style> 里，被编译成独立 _astro CSS bundle 外链。
   astro build 偶发丢该 bundle（本机实测可复现），首页就整页掉样式，而这些规则又不在 global.css 里。
   现把它们并入这份“手工维护、随 <link href=/global.css> 确定性上线、且中台零依赖发布不会剥离”的全局样式，
   作为兜底：即便构建丢了 scoped bundle，首页依旧完整有样式。
   安全性：以下类名经全仓检索仅这两处首页在用，纯类选择器全站无冲突（.chip/.section-sub/.grad-text 已在上方定义，未重复）。 */
.hero { padding: 96px 0 64px; text-align: center; }
.pill { display: inline-block; padding: 6px 14px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 13px; margin-bottom: 22px; }
.hero h1 { font-size: clamp(32px, 5.4vw, 58px); line-height: 1.12; margin: 0 0 18px; letter-spacing: -1px; }
.sub { max-width: 700px; margin: 0 auto 28px; color: var(--muted); font-size: 18px; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.stats { display: flex; gap: 40px; justify-content: center; flex-wrap: wrap; margin-top: 56px; }
.stats div { display: flex; flex-direction: column; }
.stats b { font-size: 28px; color: var(--text-strong); }
.stats span { color: var(--muted); font-size: 14px; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .grid { grid-template-columns: 1fr; } }
.feature .card-icon { font-size: 28px; margin-bottom: 10px; }
.feature h3 { margin: 0 0 8px; color: var(--text-strong); }
.feature p { color: var(--muted); margin: 0; }

.compare { max-width: 860px; margin: 0 auto; padding: 6px 0; overflow: hidden; }
.compare-row { display: grid; grid-template-columns: 1.1fr 1.4fr 1.4fr; gap: 12px; padding: 14px 22px; border-bottom: 1px solid var(--line); align-items: center; }
.compare-row:last-child { border-bottom: none; }
.compare-head { font-weight: 700; color: var(--text-strong); background: var(--card); }
.compare-head .col-ours { color: var(--brand); }
.compare .dim { color: var(--muted); }
.compare .col-ours { font-weight: 600; color: var(--text-strong); display: flex; align-items: center; gap: 8px; }
.compare .ok { color: #34d399; font-style: normal; font-weight: 800; }
.compare .virtual { color: var(--muted-2); }
@media (max-width: 720px) {
  .compare-row { grid-template-columns: 1fr; gap: 4px; padding: 12px 16px; }
  .compare-head { display: none; }
  .compare .dim { font-weight: 700; color: var(--text-strong); }
  .compare .col-ours::before { content: "实卡："; color: var(--brand); font-weight: 700; }
  .compare .virtual::before { content: "虚拟号："; color: var(--muted); }
}
.compare-note { max-width: 860px; margin: 16px auto 0; color: var(--muted); font-size: 14px; text-align: center; }

.chips { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.chip.muted { color: var(--muted); }

.pricing { align-items: stretch; }
.price { display: flex; flex-direction: column; position: relative; }
.price h3 { margin: 0 0 6px; color: var(--text-strong); }
.price ul { list-style: none; padding: 0; margin: 16px 0 24px; color: var(--muted); flex: 1; }
.price li { padding: 6px 0; border-bottom: 1px dashed var(--line); }
.price-num { font-size: 22px; font-weight: 800; color: var(--text); }
.price.featured { border-color: var(--brand); box-shadow: 0 10px 40px var(--ring); }
.badge { position: absolute; top: -12px; right: 18px; background: var(--grad); color: #fff; padding: 4px 12px; border-radius: 999px; font-size: 12px; }

.dev { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: center; }
@media (max-width: 900px) { .dev { grid-template-columns: 1fr; } }
.dev-list { list-style: none; padding: 0; color: var(--muted); }
.dev-list li { padding: 6px 0; }
.code { background: #070b18; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; overflow: auto; font-size: 13px; color: #c7d2fe; }

.res-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
@media (max-width: 820px) { .res-cols { grid-template-columns: 1fr; } }
.res-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 14px; }
.res-head h3 { margin: 0; }
.res-head a { color: var(--link); font-size: 14px; font-weight: 600; }
.res-item { display: flex; gap: 14px; align-items: center; padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--card); margin-bottom: 10px; transition: border-color .15s ease, transform .15s ease; }
.res-item:hover { border-color: var(--brand); transform: translateX(3px); }
.res-emoji { font-size: 24px; }
.res-body { display: flex; flex-direction: column; }
.res-body b { color: var(--text-strong); }
.res-body small { color: var(--muted-2); font-size: 13px; }

.faq { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { color: var(--muted); margin: 12px 0 0; }

.cta { text-align: center; padding: 80px 0; }
.cta h2 { font-size: clamp(26px, 4vw, 38px); margin: 0 0 8px; }
.cta p { color: var(--muted); margin: 0 0 24px; }