/* ==========================================================================
   快连VPN 官网样式表  kuailinao.com.cn
   纯 CSS，无外部依赖，优先保障移动端与加载性能（Bing/Core Web Vitals）
   ========================================================================== */

:root {
  --brand: #1f4fff;
  --brand-dark: #0f2fb8;
  --brand-light: #e8eeff;
  --accent: #00c2a8;
  --accent-dark: #00937f;
  --ink: #10162b;
  --ink-2: #3a4560;
  --text: #46506b;
  --muted: #7a849e;
  --line: #e5e9f2;
  --bg: #ffffff;
  --bg-soft: #f6f8fd;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(16, 22, 43, .08);
  --shadow-lg: 0 18px 50px rgba(16, 22, 43, .12);
  --maxw: 1200px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC",
          "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 {
  color: var(--ink);
  line-height: 1.3;
  margin: 0 0 .5em;
  font-weight: 700;
}

h1 { font-size: clamp(28px, 5vw, 46px); letter-spacing: -.5px; }
h2 { font-size: clamp(22px, 3.4vw, 32px); }
h3 { font-size: 19px; }

p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

.section { padding: 72px 0; }
.section--soft { background: var(--bg-soft); }
.section--tight { padding: 48px 0; }

.section__head { text-align: center; max-width: 760px; margin: 0 auto 44px; }
.section__head p { color: var(--muted); font-size: 17px; margin-bottom: 0; }

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--brand);
  background: var(--brand-light);
  border-radius: 999px;
  padding: 5px 14px;
  margin-bottom: 14px;
}

/* ---------- 顶部导航 ---------- */
.topbar {
  background: var(--ink);
  color: #cdd5ea;
  font-size: 13px;
  text-align: center;
  padding: 8px 16px;
}
.topbar strong { color: #fff; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 68px;
}

.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; color: var(--ink); }
.brand:hover { text-decoration: none; }
.brand img { width: 34px; height: 34px; }
.brand span em { font-style: normal; color: var(--brand); }

.nav__menu { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav__menu > li { position: relative; }
.nav__menu a {
  display: block;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
}
.nav__menu a:hover { background: var(--brand-light); color: var(--brand-dark); text-decoration: none; }

.nav__toggle {
  display: none;
  width: 44px; height: 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fff;
  cursor: pointer;
  padding: 0;
}
.nav__toggle span, .nav__toggle span::before, .nav__toggle span::after {
  display: block; width: 20px; height: 2px; background: var(--ink); margin: 4px auto; border-radius: 2px;
}
.nav__toggle span::before { content: ""; }
.nav__toggle span::after { content: ""; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn--primary { background: var(--brand); color: #fff; box-shadow: 0 8px 22px rgba(31, 79, 255, .28); }
.btn--primary:hover { background: var(--brand-dark); color: #fff; }
.btn--ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn--light { background: rgba(255, 255, 255, .16); color: #fff; border-color: rgba(255, 255, 255, .4); }
.btn--light:hover { background: rgba(255, 255, 255, .28); color: #fff; }
.btn--lg { padding: 15px 34px; font-size: 16px; }
.btn--block { width: 100%; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(1000px 480px at 78% -10%, rgba(0, 194, 168, .28), transparent 60%),
    radial-gradient(900px 520px at 8% 0%, rgba(31, 79, 255, .38), transparent 62%),
    linear-gradient(160deg, #0d1533 0%, #152252 55%, #0d1533 100%);
  color: #d9e1f5;
  padding: 88px 0 96px;
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 -1px 0;
  height: 120px;
  background: linear-gradient(to bottom, transparent, rgba(255, 255, 255, .06));
  pointer-events: none;
}
.hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 52px;
  align-items: center;
}
.hero h1 { color: #fff; }
.hero h1 em { font-style: normal; color: #62e6cd; }
.hero__lead { font-size: 18px; color: #c3cde8; max-width: 560px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 28px 0 22px; }

.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 34px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, .14);
}
.hero__stats div strong {
  display: block;
  font-size: 26px;
  color: #fff;
  font-weight: 800;
  line-height: 1.2;
}
.hero__stats div span { font-size: 13px; color: #a8b4d6; }

/* 协议矩阵卡片（Hero 右侧） */
.matrix {
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 22px;
  padding: 24px;
  box-shadow: 0 26px 60px rgba(0, 0, 0, .28);
  backdrop-filter: blur(8px);
}
.matrix h2 { color: #fff; font-size: 19px; margin-bottom: 4px; }
.matrix > p { color: #a8b4d6; font-size: 14px; margin-bottom: 18px; }
.matrix__row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  border-radius: 14px;
  background: rgba(255, 255, 255, .06);
  margin-bottom: 12px;
  border: 1px solid transparent;
}
.matrix__row:last-child { margin-bottom: 0; }
.matrix__row.is-active { border-color: rgba(98, 230, 205, .55); background: rgba(98, 230, 205, .12); }
.matrix__icon {
  flex: 0 0 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 12px;
  font-weight: 800;
  font-size: 13px;
  color: #fff;
  background: linear-gradient(140deg, var(--brand), #5b7bff);
}
.matrix__row:nth-child(3) .matrix__icon { background: linear-gradient(140deg, #00c2a8, #4be3c7); color: #053a33; }
.matrix__row:nth-child(4) .matrix__icon { background: linear-gradient(140deg, #ff8a3d, #ffc46b); color: #4a2400; }
.matrix__meta { flex: 1; min-width: 0; }
.matrix__meta strong { display: block; color: #fff; font-size: 15px; }
.matrix__meta span { font-size: 13px; color: #a8b4d6; }
.matrix__tag {
  flex: 0 0 auto;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(98, 230, 205, .18);
  color: #62e6cd;
  white-space: nowrap;
}
.matrix__foot { margin-top: 16px; font-size: 13px; color: #a8b4d6; }

/* ---------- 信任条 ---------- */
.trustbar { background: var(--ink); color: #b9c4e2; padding: 14px 0; font-size: 14px; }
.trustbar ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 34px;
}
.trustbar li { display: flex; align-items: center; gap: 8px; }
.trustbar li::before { content: "\2713"; color: #62e6cd; font-weight: 800; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 24px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: #d3dcf7; }
.card h3 { margin-bottom: 8px; }
.card p:last-child { margin-bottom: 0; }

.card__icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: grid; place-items: center;
  font-size: 22px;
  margin-bottom: 16px;
  background: linear-gradient(140deg, var(--brand-light), #d5e0ff);
  color: var(--brand-dark);
}
.card__badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-dark);
  background: #e2f7f3;
  border-radius: 999px;
  padding: 3px 10px;
  margin-bottom: 12px;
}

.card__list { list-style: none; margin: 12px 0 0; padding: 0; }
.card__list li { position: relative; padding-left: 22px; margin-bottom: 8px; font-size: 15px; }
.card__list li::before {
  content: "";
  position: absolute; left: 0; top: .62em;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--brand);
}

/* ---------- 场景卡 ---------- */
.usecase {
  position: relative;
  border-radius: var(--radius);
  padding: 28px;
  color: #fff;
  overflow: hidden;
  min-height: 232px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  box-shadow: var(--shadow);
}
.usecase::before {
  content: "";
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: .42;
  transition: opacity .2s ease;
}
.usecase:hover::before { opacity: .55; }
.usecase::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(6, 12, 32, .9), rgba(6, 12, 32, .25));
}
.usecase__body { position: relative; z-index: 1; }
.usecase h3 { color: #fff; }
.usecase p { color: #d6def2; font-size: 15px; margin-bottom: 12px; }
.usecase__tag {
  display: inline-block; font-size: 12px; font-weight: 700;
  background: rgba(255, 255, 255, .16); border: 1px solid rgba(255, 255, 255, .28);
  padding: 3px 10px; border-radius: 999px;
}

/* ---------- 下载模块 ---------- */
.download {
  background: linear-gradient(140deg, #0f2fb8 0%, #1f4fff 46%, #00c2a8 130%);
  color: #eaf0ff;
}
.download h2, .download h3 { color: #fff; }
.download .section__head p { color: #ccd8ff; }

.dl-tabs { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 30px; }
.dl-tabs button {
  border: 1px solid rgba(255, 255, 255, .35);
  background: rgba(255, 255, 255, .1);
  color: #fff;
  padding: 9px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-family: var(--font);
  cursor: pointer;
}
.dl-tabs button[aria-selected="true"] { background: #fff; color: var(--brand-dark); font-weight: 700; }

.dl-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 18px; }
.dl-card {
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  color: #fff;
}
.dl-card__logo { font-size: 34px; line-height: 1; margin-bottom: 10px; }
.dl-card strong { display: block; font-size: 17px; color: #fff; }
.dl-card span { display: block; font-size: 13px; color: #c9d6ff; margin: 4px 0 14px; }
.dl-card .btn { width: 100%; }

.dl-note {
  margin-top: 26px; text-align: center;
  font-size: 14px; color: #c9d6ff;
}

/* ---------- 节点 ---------- */
.nodes__panel {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
}
.nodes__list { list-style: none; margin: 0; padding: 0; }
.nodes__list button {
  width: 100%;
  text-align: left;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin-bottom: 10px;
  cursor: pointer;
  font-family: var(--font);
  font-size: 15px;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}
.nodes__list button:hover { border-color: var(--brand); color: var(--brand-dark); }
.nodes__list button[aria-selected="true"] {
  border-color: var(--brand); background: var(--brand-light); color: var(--brand-dark); font-weight: 700;
}
.nodes__flag { font-size: 20px; }

.node-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.node-table caption { text-align: left; font-weight: 700; color: var(--ink); font-size: 18px; padding-bottom: 12px; }
.node-table th, .node-table td { padding: 12px 10px; border-bottom: 1px solid var(--line); text-align: left; }
.node-table th { color: var(--ink); font-size: 14px; background: var(--bg-soft); }
.node-table td:last-child, .node-table th:last-child { text-align: right; }

.ping { font-weight: 700; font-size: 13px; padding: 3px 9px; border-radius: 999px; }
.ping--good { background: #e2f7f3; color: var(--accent-dark); }
.ping--ok { background: #fff4e0; color: #a35a00; }
.ping--busy { background: #ffe9e9; color: #c0392b; }

.node-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 16px; margin-top: 28px; }
.node-card {
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 16px; background: var(--bg-soft);
}
.node-card strong { display: block; color: var(--ink); font-size: 16px; margin-bottom: 4px; }
.node-card span { font-size: 13px; color: var(--muted); }

/* ---------- 价格 ---------- */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: start; }
.price {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  box-shadow: var(--shadow);
  position: relative;
  text-align: center;
}
.price--hot { border: 2px solid var(--brand); box-shadow: var(--shadow-lg); transform: translateY(-10px); }
.price__flag {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--brand); color: #fff; font-size: 12px; font-weight: 700;
  padding: 4px 14px; border-radius: 999px; white-space: nowrap;
}
.price h3 { margin-bottom: 6px; }
.price__amount { font-size: 40px; font-weight: 800; color: var(--ink); line-height: 1.2; }
.price__amount small { font-size: 15px; font-weight: 600; color: var(--muted); }
.price__desc { font-size: 14px; color: var(--muted); margin-bottom: 20px; }
.price ul { list-style: none; margin: 0 0 24px; padding: 0; text-align: left; }
.price ul li { padding: 8px 0 8px 26px; position: relative; border-bottom: 1px dashed var(--line); font-size: 15px; }
.price ul li:last-child { border-bottom: 0; }
.price ul li::before {
  content: "\2713"; position: absolute; left: 0; top: 8px;
  color: var(--accent); font-weight: 800;
}
.price ul li.is-off { color: #a3abc0; }
.price ul li.is-off::before { content: "\2715"; color: #c9cede; }

.price__note { text-align: center; color: var(--muted); font-size: 14px; margin-top: 28px; }

/* ---------- 评价 ---------- */
.review {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow);
}
.review__stars { color: #ffab1f; letter-spacing: 2px; font-size: 16px; }
.review__title { font-weight: 700; color: var(--ink); margin: 8px 0; font-size: 17px; }
.review p { color: var(--text); font-size: 15px; }
.review__meta { display: flex; align-items: center; gap: 12px; margin-top: 16px; }
.review__avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(140deg, var(--brand), var(--accent));
  color: #fff; display: grid; place-items: center; font-weight: 700;
}
.review__who strong { display: block; color: var(--ink); font-size: 15px; }
.review__who span { font-size: 13px; color: var(--muted); }

.rating-summary {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 20px; background: var(--bg-soft);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; margin-bottom: 30px; text-align: center;
}
.rating-summary strong { display: block; font-size: 30px; color: var(--brand); font-weight: 800; line-height: 1.2; }
.rating-summary span { font-size: 14px; color: var(--muted); }

/* ---------- FAQ ---------- */
.faq { max-width: 860px; margin: 0 auto; }
.faq details {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 18px 22px; margin-bottom: 12px; box-shadow: var(--shadow);
}
.faq summary {
  cursor: pointer; font-weight: 700; color: var(--ink); font-size: 17px;
  list-style: none; display: flex; justify-content: space-between; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--brand); font-size: 22px; line-height: 1; }
.faq details[open] summary::after { content: "\2212"; }
.faq details p { margin: 12px 0 0; color: var(--text); }

/* ---------- 合规 ---------- */
.compliance { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; align-items: start; }
.compliance__panel {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow);
}
.compliance__panel h3 { display: flex; align-items: center; gap: 10px; }
.compliance__panel h3::before {
  content: ""; width: 26px; height: 26px; border-radius: 8px;
  background: linear-gradient(140deg, var(--brand), var(--accent));
}

.pill-list { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0 0; padding: 0; list-style: none; }
.pill-list li {
  font-size: 13px; font-weight: 600; color: var(--brand-dark);
  background: var(--brand-light); border-radius: 999px; padding: 6px 14px;
}

.notice {
  border-left: 4px solid var(--accent);
  background: #f2fbfa;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 18px 22px;
  margin-top: 26px;
  font-size: 15px;
}
.notice strong { color: var(--accent-dark); }

/* ---------- CTA ---------- */
.cta {
  background: linear-gradient(140deg, #0f2fb8, #1f4fff 55%, #00b39c);
  color: #eaf0ff; text-align: center; padding: 68px 0;
}
.cta h2 { color: #fff; }
.cta p { color: #d5deff; max-width: 620px; margin: 0 auto 26px; }
.cta__actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--ink); color: #a9b4d4; padding: 62px 0 26px; font-size: 14px; }
.footer__grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 34px; }
.site-footer h3 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 9px; }
.site-footer a { color: #a9b4d4; }
.site-footer a:hover { color: #fff; }
.footer__brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 800; font-size: 18px; margin-bottom: 14px; }
.footer__about { max-width: 340px; color: #8e9ab9; }
.footer__social { display: flex; gap: 10px; margin-top: 16px; }
.footer__social a {
  width: 36px; height: 36px; border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, .16);
  display: grid; place-items: center; font-size: 12px; color: #cdd5ea;
}
.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  margin-top: 40px; padding-top: 22px;
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px;
  color: #7f8cad; font-size: 13px;
}
.footer__disclaimer {
  margin-top: 18px; font-size: 13px; color: #7f8cad; line-height: 1.8;
}

/* ---------- 文章/内页 ---------- */
.page-hero {
  background: linear-gradient(150deg, #0d1533, #1b2a63 70%, #103a6b);
  color: #cdd7f0;
  padding: 60px 0 56px;
}
.page-hero h1 { color: #fff; margin-bottom: 12px; }
.page-hero p { color: #b4c1e2; max-width: 760px; font-size: 17px; margin-bottom: 0; }

.breadcrumb { font-size: 13px; color: #93a1c4; margin-bottom: 16px; }
.breadcrumb a { color: #cdd7f0; }
.breadcrumb span { margin: 0 6px; }

.prose h2 { margin-top: 1.6em; }
.prose h3 { margin-top: 1.4em; }
.prose ul, .prose ol { padding-left: 22px; }
.prose li { margin-bottom: 8px; }
.prose table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 15px; }
.prose table th, .prose table td { border: 1px solid var(--line); padding: 12px 14px; text-align: left; }
.prose table th { background: var(--bg-soft); color: var(--ink); }
.prose table td strong { color: var(--brand-dark); }

.callout {
  border: 1px solid #d6e0fb;
  background: var(--brand-light);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
  margin: 22px 0;
}
.callout strong { color: var(--brand-dark); }

.toc {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 26px;
  margin-bottom: 34px;
}
.toc strong { display: block; color: var(--ink); margin-bottom: 10px; }
.toc ol { margin: 0; padding-left: 22px; columns: 2; column-gap: 30px; }
.toc li { margin-bottom: 6px; break-inside: avoid; }

/* 移动端 */
@media (max-width: 1024px) {
  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .nodes__panel { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .section { padding: 54px 0; }
  .nav__toggle { display: block; }
  .nav__menu {
    display: none;
    position: absolute;
    top: 68px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 12px 16px 18px;
    box-shadow: var(--shadow-lg);
    gap: 2px;
  }
  .nav__menu.is-open { display: flex; }
  .nav__menu .btn { margin-top: 8px; }
  .nav__menu li.nav-cta { display: block; }
  .grid--3, .grid--4, .grid--2, .price-grid, .compliance, .rating-summary { grid-template-columns: 1fr; }
  .price--hot { transform: none; }
  .hero { padding: 56px 0 64px; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .toc ol { columns: 1; }
  .footer__grid { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; }
}