:root {
  --ink: #172033;
  --muted: #5f6980;
  --soft: #f5f7fb;
  --line: #dde4f0;
  --blue: #2457d6;
  --cyan: #00a6d6;
  --green: #16a46b;
  --orange: #ff7a1a;
  --dark: #101827;
  --white: #ffffff;
  --shadow: 0 20px 60px rgba(21, 36, 74, .14);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.65;
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

.page {
  overflow: hidden;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(221, 228, 240, .75);
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(16px);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--dark);
  font-weight: 900;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  font-size: 15px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a:hover {
  color: var(--blue);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 900;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--orange), #ff5d00);
  box-shadow: 0 12px 28px rgba(255, 122, 26, .28);
}

.btn-secondary {
  color: var(--blue);
  border-color: rgba(36, 87, 214, .22);
  background: #fff;
}

.btn-dark {
  color: #fff;
  background: var(--dark);
}

.hero {
  position: relative;
  padding: 72px 0 62px;
  background:
    radial-gradient(circle at 20% 10%, rgba(0, 166, 214, .16), transparent 28%),
    radial-gradient(circle at 78% 16%, rgba(255, 122, 26, .13), transparent 25%),
    linear-gradient(180deg, #eef5ff 0%, #ffffff 72%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, .82fr);
  gap: 42px;
  align-items: stretch;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border: 1px solid rgba(36, 87, 214, .16);
  border-radius: 999px;
  color: var(--blue);
  background: rgba(255, 255, 255, .78);
  font-size: 15px;
  font-weight: 900;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 6px rgba(22, 164, 107, .12);
}

h1 {
  max-width: 760px;
  margin: 24px 0 18px;
  color: #0e1728;
  font-size: clamp(40px, 4.4vw, 58px);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 760px;
  margin: 0;
  color: #40506c;
  font-size: 19px;
  line-height: 1.72;
}

.search-context {
  display: grid;
  gap: 4px;
  max-width: 650px;
  margin-top: 18px;
  padding: 14px 16px;
  border: 1px solid rgba(36, 87, 214, .16);
  border-left: 4px solid var(--blue);
  border-radius: 8px;
  background: rgba(255, 255, 255, .82);
  box-shadow: 0 12px 30px rgba(21, 36, 74, .08);
}

.search-context[hidden] {
  display: none;
}

.search-context strong {
  color: var(--ink);
}

.search-context span {
  color: var(--blue);
  font-weight: 900;
  overflow-wrap: anywhere;
}

.search-context small {
  color: var(--muted);
}

.keyword-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
  margin: 24px 0 28px;
}

.pill,
.keyword-strip span {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 8px 13px;
  border: 1px solid rgba(23, 32, 51, .08);
  border-radius: 999px;
  color: #31425f;
  background: #fff;
  font-size: 14px;
  font-weight: 800;
  box-shadow: 0 8px 22px rgba(21, 36, 74, .06);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.micro-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 18px;
  margin-top: 24px;
  color: var(--muted);
  font-size: 15px;
}

.micro-proof strong {
  color: var(--ink);
}

.hero-panel,
.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 12px 32px rgba(21, 36, 74, .07);
}

.hero-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 22px;
  background: rgba(255, 255, 255, .82);
  box-shadow: var(--shadow);
}

.quick-card {
  display: grid;
  gap: 18px;
}

.quick-card-head {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.quick-card-tag,
.section-kicker {
  color: var(--blue);
  font-size: 14px;
  font-weight: 900;
}

.quick-card-tag {
  display: inline-flex;
  margin-bottom: 12px;
  padding: 5px 9px;
  border-radius: 999px;
  background: #eef5ff;
}

h2 {
  margin: 0;
  color: #111a2c;
  font-size: clamp(27px, 3.2vw, 38px);
  line-height: 1.24;
  letter-spacing: 0;
}

.quick-card h2 {
  font-size: 30px;
  line-height: 1.18;
}

.quick-card p,
.section-head p,
.card p {
  color: var(--muted);
}

.quick-card p {
  margin: 10px 0 0;
  font-size: 15px;
}

.mini-checks {
  display: grid;
  gap: 10px;
}

.mini-check {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: start;
  padding: 12px;
  border: 1px solid #e2e9f4;
  border-radius: 8px;
  background: #f8fbff;
}

.mini-check b {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: var(--blue);
  font-size: 14px;
}

.mini-check strong {
  display: block;
  color: #172033;
  font-size: 15px;
  line-height: 1.35;
}

.mini-check span {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.quick-result {
  padding: 14px;
  border-radius: 8px;
  color: #31425f;
  background: linear-gradient(135deg, #eef5ff, #fff8f1);
  font-size: 14px;
}

.quick-result strong {
  color: #172033;
}

.section {
  padding: 78px 0;
}

.section-soft {
  background: var(--soft);
}

.section-head {
  max-width: 790px;
  margin: 0 auto 36px;
  text-align: center;
}

.section-head p {
  margin: 14px auto 0;
  font-size: 17px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.card {
  padding: 24px;
}

.card h3 {
  margin: 0 0 8px;
  color: #14203a;
  font-size: 20px;
  line-height: 1.35;
}

.card p {
  margin: 0;
  font-size: 15px;
}

.icon-box {
  display: grid;
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  place-items: center;
  border-radius: 8px;
  color: var(--blue);
  background: #eef5ff;
  font-weight: 900;
}

.tool-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.tool-list span {
  padding: 6px 9px;
  border: 1px solid #dfe7f2;
  border-radius: 999px;
  color: #344461;
  background: #f8fbff;
  font-size: 12px;
  font-weight: 800;
}

.tool-list a {
  padding: 6px 9px;
  border: 1px solid rgba(36, 87, 214, .18);
  border-radius: 999px;
  color: var(--blue);
  background: #fff;
  font-size: 12px;
  font-weight: 800;
}

.tool-list a:hover {
  border-color: rgba(36, 87, 214, .45);
  background: #eef5ff;
}

.split {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 28px;
  align-items: start;
}

.diagnosis-box {
  position: sticky;
  top: 92px;
  padding: 28px;
  color: #fff;
  background: linear-gradient(135deg, #172033, #2457d6);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.diagnosis-box h2 {
  color: #fff;
}

.diagnosis-box p {
  color: rgba(255, 255, 255, .78);
}

.steps {
  display: grid;
  gap: 16px;
}

.step-card {
  position: relative;
  padding-left: 78px;
}

.step-no {
  position: absolute;
  left: 22px;
  top: 22px;
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: var(--blue);
  font-weight: 900;
}

.audience {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.audience-item {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  text-align: center;
}

.audience-item b {
  display: block;
  margin-bottom: 4px;
}

.audience-item span {
  color: var(--muted);
  font-size: 13px;
}

.proof-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.proof-card strong {
  display: block;
  margin-bottom: 6px;
  color: var(--blue);
  font-size: 28px;
  line-height: 1;
}

.form-wrap {
  display: grid;
  grid-template-columns: 1fr .72fr;
  gap: 26px;
  align-items: stretch;
}

.lead-form h2,
.admin-card h2 {
  margin-bottom: 10px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 22px;
}

.field {
  display: grid;
  gap: 7px;
}

.field-full {
  grid-column: 1 / -1;
}

.lead-guard {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

label {
  color: #2e3a52;
  font-size: 14px;
  font-weight: 800;
}

input,
select,
textarea {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid #d7dfec;
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease;
}

textarea {
  min-height: 92px;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: rgba(36, 87, 214, .8);
  box-shadow: 0 0 0 4px rgba(36, 87, 214, .1);
}

.lead-form .btn {
  margin-top: 16px;
}

.form-note,
.message {
  color: var(--muted);
  font-size: 13px;
}

.form-note a,
.footer a {
  color: #8ee8ff;
  font-weight: 800;
}

.form-note a {
  color: var(--blue);
}

.message-link {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  margin: 0 6px;
  padding: 0 10px;
  border-radius: 8px;
  color: #fff;
  background: var(--blue);
  font-weight: 900;
}

.checklist-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 22px;
  align-items: start;
}

.checklist-card {
  grid-column: 1;
  overflow-x: auto;
}

.checklist-side {
  position: sticky;
  top: 92px;
  grid-column: 2;
  grid-row: 1 / span 3;
}

.checklist-table {
  min-width: 760px;
}

.score-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.score-grid label {
  display: grid;
  gap: 8px;
}

.path-list {
  display: grid;
  gap: 12px;
}

.path-list div {
  display: grid;
  gap: 4px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbff;
}

.path-list strong {
  color: var(--ink);
}

.path-list span {
  color: var(--muted);
}

.article-body {
  max-width: 820px;
}

.article-body h2 {
  margin-top: 28px;
  font-size: 26px;
}

.article-body p {
  color: var(--muted);
  font-size: 16px;
}

.side-cta {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 22px;
  color: #fff;
  background: #152033;
}

.side-cta h2 {
  color: #fff;
}

.side-cta p {
  color: rgba(255, 255, 255, .75);
}

.qr-placeholder {
  display: grid;
  min-height: 180px;
  place-items: center;
  padding: 18px;
  border: 1px dashed rgba(255, 255, 255, .45);
  border-radius: 8px;
  color: rgba(255, 255, 255, .82);
  text-align: center;
}

.qr-placeholder > div {
  display: grid;
  justify-items: center;
  gap: 12px;
  width: 100%;
}

.qr-placeholder b {
  display: block;
  margin-bottom: 6px;
  color: #fff;
  font-size: 18px;
}

.qr-placeholder img {
  display: block;
  width: min(220px, 100%);
  height: auto;
  max-height: 260px;
  object-fit: contain;
  margin: 0 auto;
  border-radius: 8px;
  background: #fff;
}

.qr-placeholder span {
  display: block;
  overflow-wrap: anywhere;
}

.qr-placeholder [data-wechat-line] {
  width: 100%;
  padding-top: 4px;
  color: rgba(255, 255, 255, .86);
  font-size: 15px;
  line-height: 1.55;
}

.qr-placeholder [data-wechat-id] {
  display: block;
  margin-top: 2px;
  color: #fff;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0;
}

.article-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 18px;
}

.article-card {
  display: flex;
  flex-direction: column;
  min-height: 260px;
}

.article-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 13px;
}

.article-card h3 {
  font-size: 22px;
}

.article-card .btn {
  align-self: flex-start;
  margin-top: auto;
}

.faq-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.faq-card {
  min-height: 220px;
}

.faq-card h3 {
  font-size: 21px;
}

.answer-list {
  display: grid;
  gap: 16px;
}

.answer-card {
  scroll-margin-top: 92px;
  padding: 26px;
}

.answer-card h3 {
  margin: 8px 0 10px;
}

.answer-card p {
  margin: 0 0 16px;
  color: var(--muted);
}

.page-hero {
  padding: 56px 0;
  background: linear-gradient(180deg, #eef5ff, #fff);
}

.page-hero p {
  max-width: 720px;
  color: var(--muted);
  font-size: 18px;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 28px;
  align-items: start;
}

.article-content {
  min-width: 0;
  font-size: 18px;
}

.article-content p {
  color: #33415c;
}

.article-content pre {
  white-space: pre-wrap;
  font-family: inherit;
}

.article-source-card {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  margin-top: 24px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(255, 255, 255, .82);
  box-shadow: 0 18px 45px rgba(23, 36, 60, .08);
}

.article-fact {
  min-width: 0;
}

.article-fact span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 12px;
}

.article-fact b,
.article-fact time,
.article-fact a {
  display: block;
  overflow-wrap: anywhere;
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
}

.article-source-link {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.toc-card {
  position: sticky;
  top: 92px;
}

.related-articles {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.related-articles h3 {
  margin: 0 0 12px;
  font-size: 18px;
}

.related-articles a {
  display: block;
  margin: 0 0 12px;
  color: var(--ink);
  font-weight: 800;
}

.footer-cta {
  padding: 70px 0;
  color: #fff;
  background: linear-gradient(135deg, #111a2c, #2457d6);
  text-align: center;
}

.footer-cta h2 {
  color: #fff;
}

.footer-cta p {
  max-width: 720px;
  margin: 14px auto 26px;
  color: rgba(255, 255, 255, .78);
  font-size: 17px;
}

.footer {
  padding: 22px 0;
  color: #9da7bb;
  background: #0f1727;
  font-size: 13px;
  text-align: center;
}

.mobile-sticky {
  display: none;
}

.admin-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: calc(100vh - 68px);
  background: var(--soft);
}

.admin-sidebar {
  padding: 22px;
  color: #fff;
  background: var(--dark);
}

.admin-sidebar a,
.admin-sidebar button {
  display: block;
  width: 100%;
  margin-top: 10px;
  padding: 10px 12px;
  border: 0;
  border-radius: 8px;
  color: #fff;
  background: rgba(255, 255, 255, .08);
  text-align: left;
  cursor: pointer;
}

.admin-main {
  padding: 26px;
}

.admin-section {
  display: none;
}

.admin-section.active {
  display: block;
}

.admin-card {
  margin-bottom: 18px;
  padding: 22px;
}

.endpoint-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 18px 0;
}

.endpoint-card {
  display: grid;
  gap: 8px;
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbff;
}

.endpoint-card code,
.code-snippet {
  display: block;
  overflow-x: auto;
  color: #0f1b2d;
  font: 12px/1.6 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre;
}

.endpoint-card span {
  color: var(--muted);
  font-size: 13px;
}

.code-snippet {
  margin: 0 0 12px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0f1b2d;
  color: #e8f1ff;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 860px;
  font-size: 14px;
}

th,
td {
  padding: 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: #31425f;
  background: #f8fbff;
}

.status {
  display: inline-flex;
  padding: 4px 8px;
  border-radius: 999px;
  color: var(--blue);
  background: #eef5ff;
  font-size: 12px;
  font-weight: 900;
}

.login-page {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 24px;
  background: linear-gradient(135deg, #eef5ff, #fff8f1);
}

.login-card {
  width: min(420px, 100%);
  padding: 28px;
}

@media (max-width: 980px) {
  .nav-links {
    display: none;
  }

  .hero {
    padding: 50px 0 48px;
  }

  .hero-grid,
  .split,
  .form-wrap,
  .article-layout,
  .admin-layout,
  .checklist-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .checklist-card,
  .checklist-side {
    grid-column: auto;
    grid-row: auto;
  }

  .checklist-side {
    position: relative;
    top: auto;
  }

  .score-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-panel {
    max-width: 620px;
  }

  .diagnosis-box,
  .toc-card {
    position: relative;
    top: auto;
  }

  .article-source-card {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .endpoint-grid {
    grid-template-columns: 1fr;
  }

  .grid-3,
  .grid-4,
  .proof-row,
  .article-grid,
  .faq-list {
    grid-template-columns: 1fr 1fr;
  }

  .audience {
    grid-template-columns: repeat(2, 1fr);
  }

  .admin-sidebar {
    display: flex;
    gap: 10px;
    overflow-x: auto;
  }

  .admin-sidebar a,
  .admin-sidebar button {
    width: auto;
    min-width: max-content;
    margin-top: 0;
  }
}

@media (max-width: 760px) {
  .hero {
    padding: 42px 0 42px;
  }

  h1 {
    max-width: 100%;
    font-size: 38px;
    line-height: 1.1;
  }

  .hero-lead {
    max-width: 100%;
    font-size: 18px;
    line-height: 1.68;
  }

  .eyebrow {
    width: 100%;
    min-height: 42px;
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 15px;
    line-height: 1.35;
  }

  .keyword-strip {
    gap: 9px;
    margin: 22px 0 26px;
  }

  .keyword-strip span {
    min-height: 36px;
    padding: 8px 12px;
    font-size: 14px;
  }

  .hero-actions,
  .hero-actions .btn {
    width: 100%;
  }

  .hero-actions .btn {
    min-height: 50px;
  }

  .micro-proof {
    display: grid;
    gap: 9px;
    font-size: 15px;
  }

  .hero-panel {
    display: none;
  }
}

@media (max-width: 640px) {
  body {
    padding-bottom: 68px;
  }

  .container {
    width: min(100% - 28px, 1120px);
  }

  .article-source-card {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 34px 0 34px;
  }

  .section {
    padding: 54px 0;
  }

  h1 {
    margin: 16px 0 12px;
    font-size: 34px;
    line-height: 1.12;
  }

  h2 {
    font-size: 28px;
  }

  .hero-lead,
  .section-head p {
    font-size: 16px;
  }

  .hero-actions,
  .btn {
    width: 100%;
  }

  .eyebrow {
    align-items: flex-start;
    border-radius: 10px;
    font-size: 14px;
    line-height: 1.38;
  }

  .keyword-strip {
    gap: 8px;
    margin: 18px 0 22px;
  }

  .keyword-strip span {
    padding: 6px 9px;
  }

  .micro-proof {
    display: grid;
    gap: 8px;
    margin-top: 18px;
  }

  .hero-panel {
    display: none;
  }

  .grid-3,
  .grid-4,
  .audience,
  .proof-row,
  .form-grid,
  .score-grid,
  .article-grid,
  .faq-list {
    grid-template-columns: 1fr;
  }

  .step-card {
    padding-left: 22px;
  }

  .step-no {
    position: static;
    margin-bottom: 12px;
  }

  .side-cta h2 {
    font-size: 28px;
  }

  body {
    padding-bottom: calc(78px + env(safe-area-inset-bottom));
  }

  .mobile-sticky {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 30;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
    border-top: 1px solid var(--line);
    background: rgba(255, 255, 255, .95);
    box-shadow: 0 -10px 28px rgba(21, 36, 74, .14);
  }

  .mobile-sticky .btn {
    min-height: 42px;
    padding: 0 10px;
    font-size: 14px;
  }
}