:root {
  --ink: #111827;
  --muted: #5b6472;
  --line: #dfe5ec;
  --paper: #fbfcfd;
  --white: #ffffff;
  --blue: #2563eb;
  --blue-deep: #1d4ed8;
  --green: #0f766e;
  --amber: #b45309;
  --rose: #be123c;
  --shadow: 0 24px 70px rgba(17, 24, 39, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", Arial, sans-serif;
  line-height: 1.5;
}

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

.announcement {
  display: flex;
  justify-content: center;
  gap: 12px;
  padding: 10px 16px;
  background: #111827;
  color: #f8fafc;
  font-size: 14px;
}

.announcement span {
  color: #93c5fd;
  font-weight: 700;
}

.announcement a {
  color: #ffffff;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0;
  background: rgba(251, 252, 253, 0.88);
  backdrop-filter: blur(18px);
}

.brand,
.nav-links,
.header-actions,
.hero-actions,
.proof-row,
.site-footer,
.site-footer div {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 8px;
  background: var(--ink);
  color: var(--white);
}

.nav-links {
  gap: 22px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 600;
}

.nav-cta,
.button,
.subscribe-form button {
  border-radius: 8px;
  font-weight: 800;
}

.header-actions {
  gap: 10px;
}

.language-link,
.language-select {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.language-select {
  cursor: pointer;
  font: inherit;
  font-size: 14px;
}

.nav-cta {
  padding: 10px 16px;
  background: var(--ink);
  color: var(--white);
  font-size: 14px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 440px);
  gap: 56px;
  width: min(1220px, calc(100% - 64px));
  margin: 44px auto 28px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue-deep);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 22px;
  font-size: clamp(42px, 6vw, 72px);
  line-height: 1.02;
  letter-spacing: 0;
}

.zh-page {
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

.zh-page h1 {
  max-width: 760px;
}

.zh-page h2 {
  max-width: 860px;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.05;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.2;
}

.hero-text,
.section-heading p,
.split-section p,
.subscribe-section p {
  color: var(--muted);
  font-size: 18px;
}

.hero-text {
  max-width: 690px;
  line-height: 1.7;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 12px;
  margin: 26px 0 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
}

.button.primary {
  background: var(--blue);
  color: var(--white);
  box-shadow: 0 10px 28px rgba(37, 99, 235, 0.25);
}

.button.secondary {
  border: 1px solid var(--line);
  background: var(--white);
}

.proof-row {
  flex-wrap: wrap;
  gap: 10px;
}

.proof-row span {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.hero-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 18px 48px rgba(17, 24, 39, 0.08);
  overflow: hidden;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-weight: 800;
}

.signal-list {
  display: grid;
}

.signal-list article {
  padding: 22px;
  border-bottom: 1px solid var(--line);
}

.signal-list article:last-child {
  border-bottom: 0;
}

.signal-list h2 {
  margin: 10px 0 8px;
  font-size: 22px;
  line-height: 1.22;
}

.signal-list p,
.feature-card p,
.content-layouts p,
.company-list span,
.faq-list p,
.form-note {
  color: var(--muted);
}

.signal-tag {
  display: inline-flex;
  padding: 5px 9px;
  border-radius: 999px;
  color: var(--white);
  font-size: 12px;
  font-weight: 800;
}

.signal-tag.green {
  background: var(--green);
}

.signal-tag.blue {
  background: var(--blue);
}

.signal-tag.amber {
  background: var(--amber);
}

.logo-strip {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto 70px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
  overflow: hidden;
}

.logo-strip span {
  display: grid;
  min-height: 72px;
  place-items: center;
  background: var(--white);
  color: var(--muted);
  font-weight: 800;
}

.section,
.subscribe-section,
.site-footer {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.section {
  padding: 74px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

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

.feature-card,
.content-layouts article,
.company-list article,
.faq-list details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.feature-card {
  padding: 28px;
}

.icon {
  display: grid;
  width: 42px;
  height: 42px;
  margin-bottom: 22px;
  place-items: center;
  border-radius: 8px;
  background: #e8f0ff;
  color: var(--blue-deep);
  font-weight: 900;
}

.split-section {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 42px;
  align-items: start;
}

.text-link {
  color: var(--blue-deep);
  font-weight: 800;
}

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

.company-list article {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 18px;
}

.company-list strong {
  min-width: 110px;
}

.content-layouts {
  grid-template-columns: repeat(4, 1fr);
}

.content-layouts article {
  padding: 22px;
}

.content-layouts h3 {
  font-size: 19px;
}

.ad-demo {
  width: min(970px, calc(100% - 32px));
  min-height: 112px;
  margin: 22px auto 74px;
  display: grid;
  place-items: center;
  border: 1px dashed #9aa7b6;
  border-radius: 8px;
  background: #f3f6fa;
  color: var(--muted);
  text-align: center;
}

.ad-demo span {
  color: var(--ink);
  font-weight: 800;
}

.ad-demo p {
  margin: 4px 0 0;
}

.mvp-hero {
  grid-template-columns: minmax(0, 1fr) minmax(360px, 440px);
  align-items: start;
  margin-top: 38px;
  margin-bottom: 16px;
}

.mvp-hero .hero-copy {
  max-width: 700px;
}

.zh-page .mvp-hero h1 {
  max-width: 690px;
  margin-bottom: 18px;
  font-size: clamp(32px, 3.45vw, 46px);
  line-height: 1.1;
}

.en-page .mvp-hero h1,
.ja-page .mvp-hero h1,
.ko-page .mvp-hero h1,
.fr-page .mvp-hero h1 {
  max-width: 690px;
  margin-bottom: 18px;
  font-size: clamp(31px, 3.35vw, 44px);
  line-height: 1.08;
}

.en-page .mvp-hero,
.ja-page .mvp-hero,
.ko-page .mvp-hero,
.fr-page .mvp-hero {
  gap: 52px;
  margin-top: 36px;
  margin-bottom: 12px;
}

.en-page .hero-text,
.ja-page .hero-text,
.ko-page .hero-text,
.fr-page .hero-text {
  max-width: 690px;
  font-size: 17px;
  line-height: 1.6;
}

.en-page .hero-actions,
.ja-page .hero-actions,
.ko-page .hero-actions,
.fr-page .hero-actions {
  margin-top: 24px;
}

.stats-panel {
  align-self: start;
  justify-self: end;
  width: 100%;
  margin-top: 50px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
}

.stat-grid div {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 16px;
  min-height: 120px;
  background: var(--white);
  text-align: center;
}

.stat-grid strong {
  display: block;
  font-size: 42px;
  line-height: 0.9;
}

.stat-grid span,
.panel-note {
  color: var(--muted);
  font-weight: 700;
}

.panel-note {
  margin: 0;
  padding: 18px 20px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.intel-section,
.submit-section {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.intel-section {
  padding: 34px 0 24px;
}

.en-page .intel-section,
.ja-page .intel-section,
.ko-page .intel-section,
.fr-page .intel-section {
  padding-top: 24px;
}

.search-shell {
  display: grid;
  gap: 18px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.search-shell h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 3vw, 44px);
}

.search-box label,
.tip-form label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.search-box input,
.tip-form input,
.tip-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
  color: var(--ink);
  font: inherit;
}

.search-box input {
  min-height: 54px;
  padding: 0 16px;
  font-size: 17px;
}

.filter-row,
.tag-row,
.intel-card-top,
.intel-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-chip {
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
}

.filter-chip.active {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--white);
}

.intel-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 2px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.intel-list {
  display: grid;
  gap: 14px;
}

.intel-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.intel-card h3 {
  margin: 14px 0 8px;
  font-size: 24px;
}

.intel-card p {
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 16px;
}

.company-pill,
.category-pill,
.confidence-pill,
.tag-row span {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
}

.company-pill {
  background: #e8f0ff;
  color: var(--blue-deep);
}

.category-pill {
  background: #ecfdf5;
  color: var(--green);
}

.confidence-pill {
  background: #fff7ed;
  color: var(--amber);
}

.intel-meta {
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.intel-meta a {
  color: var(--blue-deep);
}

.tag-row {
  margin-top: 14px;
}

.tag-row span {
  background: #f3f6fa;
  color: var(--muted);
}

.empty-state {
  padding: 40px 24px;
  border: 1px dashed #9aa7b6;
  border-radius: 8px;
  background: #f8fafc;
  color: var(--muted);
  text-align: center;
  font-weight: 800;
}

.rules-section {
  padding-top: 40px;
}

.rule-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.rule-grid article {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.rule-grid strong {
  display: block;
  margin-bottom: 10px;
  font-size: 20px;
}

.rule-grid p {
  color: var(--muted);
}

.submit-section {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 34px;
  padding: 44px 0 70px;
}

.tip-form {
  display: grid;
  gap: 12px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.tip-form input,
.tip-form textarea {
  padding: 13px 14px;
}

.tip-form textarea {
  resize: vertical;
}

.tip-form button {
  min-height: 48px;
  border: 0;
  border-radius: 8px;
  background: var(--blue);
  color: var(--white);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
}

.subscribe-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  padding: 46px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--white);
}

.subscribe-section .eyebrow,
.subscribe-section p {
  color: #bfdbfe;
}

.subscribe-form label {
  display: block;
  margin-bottom: 10px;
  color: #dbeafe;
  font-weight: 800;
}

.subscribe-form div {
  display: flex;
  gap: 10px;
}

.subscribe-form input {
  width: 100%;
  min-height: 50px;
  padding: 0 14px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
  font: inherit;
}

.subscribe-form input::placeholder {
  color: #bfdbfe;
}

.subscribe-form button {
  min-width: 128px;
  border: 0;
  background: var(--white);
  color: var(--ink);
  cursor: pointer;
  font: inherit;
}

.form-note {
  margin: 10px 0 0;
  font-size: 13px;
}

.faq-section {
  padding-bottom: 64px;
}

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

.faq-list details {
  padding: 18px 20px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 800;
}

.faq-list p {
  margin: 12px 0 0;
}

.site-footer {
  justify-content: space-between;
  gap: 20px;
  padding: 28px 0 42px;
  color: var(--muted);
  font-weight: 700;
}

.site-footer div,
.footer-contact,
.footer-links {
  gap: 18px;
}

.footer-contact,
.footer-links {
  justify-content: flex-end;
}

.footer-links a {
  color: var(--muted);
}

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

.info-main {
  min-height: calc(100vh - 150px);
}

.info-section {
  max-width: 820px;
}

.info-section h1 {
  max-width: 780px;
  font-size: clamp(38px, 5vw, 58px);
}

.info-section h2 {
  margin-top: 34px;
  font-size: 26px;
  line-height: 1.2;
}

.info-section p {
  color: var(--muted);
  font-size: 17px;
}

.info-section a,
.contact-card a {
  color: var(--blue-deep);
  font-weight: 800;
}

.contact-card {
  display: inline-flex;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.contact-toggle {
  border: 0;
  padding: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
}

.contact-toggle:hover,
.contact-email:hover {
  color: var(--blue-deep);
}

.contact-email {
  color: var(--ink);
  font-weight: 800;
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }

  .hero,
  .split-section,
  .subscribe-section,
  .submit-section {
    grid-template-columns: 1fr;
  }

  .hero {
    margin-top: 34px;
  }

  .stats-panel {
    justify-self: stretch;
    margin-top: 0;
  }

  .logo-strip,
  .brief-grid,
  .content-layouts,
  .rule-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .subscribe-section {
    padding: 30px;
  }
}

@media (max-width: 620px) {
  .announcement {
    align-items: center;
    flex-direction: column;
    gap: 4px;
    text-align: center;
  }

  .site-header {
    width: min(100% - 24px, 1180px);
  }

  .brand span:last-child {
    max-width: 170px;
    line-height: 1.1;
  }

  .nav-cta {
    display: none;
  }

  .hero,
  .section,
  .subscribe-section,
  .intel-section,
  .submit-section,
  .site-footer,
  .logo-strip {
    width: min(100% - 24px, 1180px);
  }

  h1 {
    font-size: 46px;
  }

  h2 {
    font-size: 34px;
  }

  .hero-panel {
    min-width: 0;
  }

  .logo-strip,
  .brief-grid,
  .content-layouts,
  .rule-grid {
    grid-template-columns: 1fr;
  }

  .company-list article,
  .site-footer,
  .subscribe-form div,
  .intel-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .search-shell,
  .intel-card,
  .tip-form {
    padding: 18px;
  }

  .subscribe-form button {
    min-height: 50px;
  }
}