:root {
  --bg: #f8fafc;
  --bg-deep: #ffffff;
  --surface: #ffffff;
  --surface-hi: #ffffff;
  --surface-up: #f8fafc;
  --border: #d9e1ea;
  --border-soft: #e7edf4;
  --text: #111827;
  --text-muted: #4b5563;
  --text-faint: #8a95a3;
  --accent: #2563eb;
  --accent-dim: rgba(37, 99, 235, .08);
  --accent-glow: rgba(37, 99, 235, .14);
  --green: #16a34a;
  --green-dim: rgba(22, 163, 74, .10);
  --blue: #2563eb;
  --blue-dim: rgba(37, 99, 235, .08);
  --red: #dc2626;
  --red-dim: rgba(220, 38, 38, .08);
  --radius: 8px;
  --radius-lg: 10px;
  --radius-xl: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05);
  --shadow-lg: 0 18px 45px rgba(15, 23, 42, .08);
}

*,
*::before,
*::after {
  font-family: 'Google Sans' !important;
  letter-spacing: 0 !important;
}

html {
  background: var(--bg);
}

body {
  background: var(--bg) !important;
  color: var(--text);
  line-height: 1.62;
}

header {
  background: rgba(255, 255, 255, .96) !important;
  border-bottom: 1px solid var(--border-soft) !important;
  box-shadow: 0 1px 0 rgba(15, 23, 42, .02) !important;
  backdrop-filter: blur(10px);
}

.header-inner {
  height: 64px !important;
}

.logo {
  color: var(--text) !important;
  font-size: 18px !important;
  font-weight: 700 !important;
}

.logo-mark {
  width: 30px !important;
  height: 30px !important;
  border-radius: 7px !important;
  background: #2563eb !important;
  box-shadow: 0 8px 18px rgba(37, 99, 235, .18);
}

nav a,
.nav-more-toggle,
.mob-nav a {
  border-radius: 7px !important;
  color: #536071 !important;
  font-weight: 600 !important;
}

nav a:hover,
nav a.active,
.nav-more-toggle:hover,
.nav-more.active .nav-more-toggle,
.nav-more:focus-within .nav-more-toggle,
.mob-nav a:hover,
.mob-nav a.active {
  color: var(--accent) !important;
  background: var(--accent-dim) !important;
}

.nav-more-menu,
.mob-nav {
  border-color: var(--border-soft) !important;
  border-radius: 10px !important;
  box-shadow: 0 18px 40px rgba(15, 23, 42, .10) !important;
}

.hero {
  padding-top: 44px !important;
  padding-bottom: 16px !important;
}

.hero::before {
  content: none !important;
}

.hero-badge,
.eyebrow,
.tool-focus-mode,
.input-method-label,
.opt-label,
.metric-label {
  border-radius: 999px !important;
  background: var(--accent-dim) !important;
  border: 1px solid rgba(37, 99, 235, .12) !important;
  color: var(--accent) !important;
  box-shadow: none !important;
}

.eyebrow::before {
  background: var(--accent) !important;
}

h1,
.hero h1 {
  color: var(--text) !important;
  font-weight: 800 !important;
}

h1 .accent-word {
  color: var(--accent) !important;
}

.hero p,
.hero-sub,
.article-card p,
.content-section-card p,
.support-card p,
.legal-card p,
.contact-card p,
.contact-form-card p {
  color: var(--text-muted) !important;
}

.article-shell,
#solver,
.support-shell,
.contact-shell,
.legal-shell {
  padding-left: 24px !important;
  padding-right: 24px !important;
}

.article-card,
.support-card,
.contact-card,
.contact-form-card,
.legal-card,
.tool-shell,
.tool-focus-card {
  background: #ffffff !important;
  border: 1px solid var(--border-soft) !important;
  border-radius: 10px !important;
  box-shadow: var(--shadow) !important;
}

.article-card,
.support-card,
.contact-card,
.contact-form-card,
.legal-card {
  padding: 28px !important;
}

.article-card {
  max-width: none;
  margin: 0 auto;
}

.content-section-card {
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  padding: 0 !important;
}

.content-section-heading,
.article-card h2,
.article-card h3 {
  color: var(--text) !important;
}

.content-section-heading {
  margin-top: 42px !important;
  padding-top: 28px;
  border-top: 1px solid var(--border-soft);
}

.article-card > .content-section-heading:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.tool-shell,
.tool-focus-card {
  overflow: hidden;
  box-shadow: var(--shadow-lg) !important;
}

.tool-tabbar,
.tool-content {
  background: #ffffff !important;
}

.tool-tabbar {
  border-bottom: 1px solid var(--border-soft) !important;
  padding: 18px 22px !important;
}

.tool-content {
  padding: 24px !important;
}

.input-mode-btn,
.upload-zone,
.manual-panel,
.piece-card,
.metric-card,
.step-item,
.result-note,
.scan-box,
.upload-preview,
.faq-block,
.related-card,
.article-home-link,
.feature-card,
.mode-btn,
.opt-btn,
.ctrl-btn,
.out-btn {
  background: #ffffff !important;
  border: 1px solid var(--border-soft) !important;
  border-radius: 8px !important;
  box-shadow: none !important;
}

.input-mode-btn:hover,
.upload-zone:hover,
.upload-zone.drag-over,
.mode-btn:hover,
.ctrl-btn:hover,
.out-btn:hover,
.related-card:hover,
.article-home-link:hover {
  border-color: #b7c5d8 !important;
  background: #f9fbfd !important;
}

.input-mode-btn.active,
.mode-btn.active,
.opt-btn.active {
  border-color: rgba(37, 99, 235, .35) !important;
  background: var(--accent-dim) !important;
  color: var(--accent) !important;
}

.input-mode-btn.active::after {
  background: var(--accent) !important;
  border-radius: 999px !important;
  box-shadow: none !important;
}

.btn-solve,
.page-cta,
.submit-btn {
  background: var(--accent) !important;
  border-radius: 8px !important;
  box-shadow: 0 10px 20px rgba(37, 99, 235, .18) !important;
  color: #ffffff !important;
}

.btn-solve:hover,
.page-cta:hover,
.submit-btn:hover {
  background: #1d4ed8 !important;
  transform: translateY(-1px);
}

.cell,
.mini-cell,
.board-mini-preview span {
  border-radius: 5px !important;
}

.cell {
  border-color: #dbe3ed !important;
  background: #f8fafc !important;
}

.cell.filled,
.mini-cell.filled,
.board-mini-preview span.filled {
  background: var(--accent) !important;
  box-shadow: none !important;
}

.solution-highlight {
  outline: 2px solid #16a34a !important;
  outline-offset: -2px;
}

.output-panel,
.result-panel,
.recognition-state {
  background: #f8fafc !important;
  border: 1px solid var(--border-soft) !important;
  border-radius: 10px !important;
}

.metric-val,
.metric-card strong,
.step-score {
  color: var(--accent) !important;
}

.step-num,
.step-number {
  background: var(--accent) !important;
  color: #ffffff !important;
  border-radius: 7px !important;
}

.tool-error {
  background: #fff7ed !important;
  color: #9a3412 !important;
  border-color: #fed7aa !important;
  border-radius: 8px !important;
}

.faq-block {
  overflow: hidden;
}

.faq-block.active {
  border-color: rgba(37, 99, 235, .22) !important;
}

table {
  border-radius: 8px !important;
  background: #ffffff !important;
}

th {
  background: #f8fafc !important;
}

footer {
  background: #ffffff !important;
  border-top: 1px solid var(--border-soft) !important;
}

@media (max-width: 760px) {
  .article-card,
  .support-card,
  .contact-card,
  .contact-form-card,
  .legal-card {
    padding: 22px !important;
  }

  .hero {
    padding-top: 32px !important;
  }

  .tool-content {
    padding: 16px !important;
  }
}

/* Professional SaaS redesign layer */
:root {
  --app-bg: #eef3f8;
  --app-bg-2: #f8fbff;
  --panel: #ffffff;
  --panel-soft: #f6f9fc;
  --ink: #172033;
  --muted: #5d6b82;
  --muted-2: #7b8798;
  --line: #dce5ef;
  --line-strong: #c8d5e3;
  --brand: #1769e0;
  --brand-2: #0f54b8;
  --brand-soft: #e8f1ff;
  --success: #18a058;
  --warning: #b7791f;
  --danger: #d33f49;
  --panel-shadow: 0 18px 50px rgba(25, 42, 70, .10);
  --small-shadow: 0 8px 22px rgba(25, 42, 70, .06);
}

body {
  background:
    linear-gradient(180deg, #f9fbff 0, #eef3f8 340px, #f6f8fb 100%) !important;
  color: var(--ink) !important;
  font-size: 16px !important;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(23, 105, 224, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 105, 224, .045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(180deg, #000 0, transparent 460px);
  z-index: -1;
}

header {
  position: sticky !important;
  top: 0 !important;
  z-index: 50 !important;
  background: rgba(255, 255, 255, .88) !important;
  border-bottom: 1px solid rgba(200, 213, 227, .78) !important;
  box-shadow: 0 10px 30px rgba(20, 33, 54, .06) !important;
}

.header-inner {
  max-width: 1180px !important;
  height: 72px !important;
  padding: 0 24px !important;
}

.logo {
  gap: 11px !important;
  font-size: 19px !important;
  color: var(--ink) !important;
}

.logo-mark {
  width: 36px !important;
  height: 36px !important;
  border-radius: 10px !important;
  background: linear-gradient(135deg, #1769e0 0%, #1ca77c 100%) !important;
  box-shadow: 0 12px 24px rgba(23, 105, 224, .24) !important;
}

.logo-mark span {
  background: rgba(255, 255, 255, .94) !important;
  border-radius: 3px !important;
}

nav {
  gap: 4px !important;
}

nav a,
.nav-more-toggle,
.mob-nav a {
  padding: 9px 12px !important;
  border-radius: 8px !important;
  color: #536178 !important;
  font-size: 14px !important;
  font-weight: 600 !important;
}

nav a.active,
nav a:hover,
.nav-more-toggle:hover,
.nav-more.active .nav-more-toggle,
.mob-nav a.active,
.mob-nav a:hover {
  background: var(--brand-soft) !important;
  color: var(--brand) !important;
}

.hero {
  max-width: 1180px !important;
  margin: 0 auto !important;
  padding: 58px 24px 26px !important;
  text-align: left !important;
}

.hero-badge,
.eyebrow {
  display: inline-flex !important;
  align-items: center !important;
  gap: 8px !important;
  width: fit-content !important;
  padding: 7px 12px !important;
  border-radius: 999px !important;
  background: #ffffff !important;
  border: 1px solid var(--line) !important;
  color: var(--brand) !important;
  box-shadow: var(--small-shadow) !important;
  font-size: 13px !important;
  font-weight: 700 !important;
}

.hero h1 {
  max-width: 760px !important;
  margin: 18px 0 14px !important;
  font-size: clamp(42px, 6vw, 76px) !important;
  line-height: .96 !important;
  color: var(--ink) !important;
  letter-spacing: 0 !important;
}

.hero-sub,
.hero p {
  max-width: none !important;
  margin-left: 0 !important;
  color: var(--muted) !important;
  font-size: 18px !important;
  line-height: 1.72 !important;
}

.hero-meta {
  justify-content: flex-start !important;
  gap: 10px !important;
  margin-top: 18px !important;
}

.hero-meta span:not(.hero-meta-sep) {
  display: inline-flex !important;
  align-items: center !important;
  min-height: 34px !important;
  padding: 0 12px !important;
  border: 1px solid var(--line) !important;
  border-radius: 999px !important;
  background: #ffffff !important;
  color: var(--muted) !important;
  font-weight: 600 !important;
}

.hero-meta-sep {
  display: none !important;
}

#solver,
.tool-shell,
.tool-focus-card {
  max-width: 1180px !important;
}

#solver {
  margin: 0 auto !important;
  padding: 10px 24px 42px !important;
}

.tool-shell,
.tool-focus-card {
  border: 1px solid var(--line) !important;
  border-radius: 8px !important;
  background: var(--panel) !important;
  box-shadow: var(--panel-shadow) !important;
}

.tool-shell {
  margin-top: 12px !important;
}

.tool-tabbar {
  padding: 22px !important;
  background: linear-gradient(180deg, #ffffff, #f8fbff) !important;
  border-bottom: 1px solid var(--line) !important;
}

.control-grid {
  gap: 16px !important;
}

.input-method-label,
.opt-label {
  display: block !important;
  margin-bottom: 10px !important;
  padding: 0 !important;
  border: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  color: var(--ink) !important;
  font-size: 13px !important;
  font-weight: 800 !important;
  text-transform: uppercase !important;
}

.input-method-switch {
  gap: 12px !important;
}

.input-mode-btn {
  padding: 18px !important;
  border: 1px solid var(--line) !important;
  border-radius: 8px !important;
  background: #ffffff !important;
  box-shadow: 0 1px 0 rgba(23, 32, 51, .04) !important;
}

.input-mode-btn.active {
  border-color: rgba(23, 105, 224, .42) !important;
  background: linear-gradient(180deg, #eef6ff, #ffffff) !important;
}

.input-mode-hint {
  color: var(--brand) !important;
  font-size: 12px !important;
  font-weight: 800 !important;
  text-transform: uppercase !important;
}

.input-mode-title {
  color: var(--ink) !important;
  font-size: 16px !important;
  font-weight: 800 !important;
}

.input-mode-copy {
  color: var(--muted) !important;
}

.tool-content {
  padding: 28px !important;
  background: #ffffff !important;
}

.upload-zone {
  min-height: 260px !important;
  border: 1px dashed #aabbd0 !important;
  border-radius: 8px !important;
  background: linear-gradient(180deg, #f9fbff, #f3f7fb) !important;
}

.upload-icon {
  background: var(--brand-soft) !important;
  color: var(--brand) !important;
}

.upload-title,
.section-heading,
.block-slot-label,
.output-title,
.recognition-title {
  color: var(--ink) !important;
  font-weight: 800 !important;
}

.upload-sub,
.tips-list,
.manual-note,
.result-note p,
.step-move-sub {
  color: var(--muted) !important;
}

.tips-box,
.manual-note,
.recognition-state,
.output-panel {
  border: 1px solid var(--line) !important;
  border-radius: 8px !important;
  background: var(--panel-soft) !important;
}

.btn-solve {
  min-height: 54px !important;
  padding: 0 26px !important;
  border: 1px solid var(--brand-2) !important;
  border-radius: 8px !important;
  background: linear-gradient(180deg, var(--brand), var(--brand-2)) !important;
  box-shadow: 0 14px 28px rgba(23, 105, 224, .22) !important;
  color: #ffffff !important;
  font-size: 15px !important;
  font-weight: 800 !important;
}

.mode-selector {
  padding: 4px !important;
  border: 1px solid var(--line) !important;
  border-radius: 8px !important;
  background: #f3f7fb !important;
}

.mode-btn {
  border: 0 !important;
  border-radius: 6px !important;
  background: transparent !important;
  color: var(--muted) !important;
}

.mode-btn.active {
  background: #ffffff !important;
  color: var(--brand) !important;
  box-shadow: 0 3px 10px rgba(20, 33, 54, .08) !important;
}

.manual-layout {
  gap: 22px !important;
}

.board-section,
.blocks-panel,
.scan-box,
.block-slot,
.metric-card,
.step-item,
.result-note {
  border: 1px solid var(--line) !important;
  border-radius: 8px !important;
  background: #ffffff !important;
  box-shadow: 0 1px 0 rgba(23, 32, 51, .04) !important;
}

.grid-wrap {
  padding: 16px !important;
  border: 1px solid var(--line) !important;
  border-radius: 8px !important;
  background: #f6f9fc !important;
}

.game-grid {
  gap: 5px !important;
  padding: 6px !important;
  border-radius: 8px !important;
  background: #dce5ef !important;
}

.cell {
  border: 1px solid #c8d5e3 !important;
  border-radius: 5px !important;
  background: #ffffff !important;
}

.cell.filled,
.mini-cell.filled,
.board-mini-preview span.filled {
  background: linear-gradient(135deg, #1769e0, #19a37b) !important;
  box-shadow: inset 0 -1px 0 rgba(0, 0, 0, .12) !important;
}

.ctrl-btn,
.nav-btn,
.out-btn {
  border: 1px solid var(--line) !important;
  border-radius: 7px !important;
  background: #ffffff !important;
  color: var(--ink) !important;
  font-weight: 700 !important;
}

.ctrl-btn.danger {
  color: var(--danger) !important;
  border-color: rgba(211, 63, 73, .28) !important;
  background: #fff5f5 !important;
}

.article-home-shell,
.article-shell {
  max-width: 1180px !important;
  margin: 0 auto !important;
  padding: 34px 24px 74px !important;
}

.article-home-card,
.article-card,
.support-card,
.contact-card,
.contact-form-card,
.legal-card {
  max-width: none !important;
  border: 1px solid var(--line) !important;
  border-radius: 8px !important;
  background: #ffffff !important;
  box-shadow: var(--small-shadow) !important;
  padding: 36px !important;
}

.article-home-card {
  display: grid !important;
  grid-template-columns: minmax(0, 1fr) !important;
  gap: 0 !important;
}

.article-home-card h2,
.article-card h1,
.article-card h2,
.content-section-heading,
.support-card h1,
.contact-card h1,
.legal-card h1 {
  color: var(--ink) !important;
  font-weight: 800 !important;
  line-height: 1.15 !important;
}

.article-home-card h2 {
  margin: 0 0 16px !important;
  font-size: 34px !important;
}

.article-home-card p,
.article-card p,
.support-card p,
.contact-card p,
.legal-card p,
.faq-block-answer p {
  max-width: none !important;
  color: var(--muted) !important;
  font-size: 16px !important;
  line-height: 1.78 !important;
}

.article-home-card a,
.article-card a {
  color: var(--brand) !important;
  font-weight: 700 !important;
  text-decoration: none !important;
}

.article-home-card a:hover,
.article-card a:hover {
  text-decoration: underline !important;
}

.faq-accordion,
.article-home-links,
.related-links {
  margin-top: 24px !important;
}

.faq-block,
.article-home-link,
.related-card {
  border: 1px solid var(--line) !important;
  border-radius: 8px !important;
  background: #ffffff !important;
  box-shadow: none !important;
}

.faq-block-question {
  color: var(--ink) !important;
  font-weight: 800 !important;
}

.faq-block.active {
  background: #f8fbff !important;
  border-color: rgba(23, 105, 224, .30) !important;
}

.footer-simple,
footer {
  border-top: 1px solid var(--line) !important;
  background: #ffffff !important;
  color: var(--muted) !important;
}

@media (max-width: 820px) {
  .header-inner,
  .hero,
  #solver,
  .article-home-shell,
  .article-shell {
    padding-left: 16px !important;
    padding-right: 16px !important;
  }

  .hero {
    padding-top: 38px !important;
  }

  .hero h1 {
    font-size: 44px !important;
  }

  .hero-sub,
  .hero p {
    font-size: 16px !important;
  }

  .tool-tabbar,
  .tool-content,
  .article-home-card,
  .article-card {
    padding: 20px !important;
  }

  .article-home-card h2 {
    font-size: 28px !important;
  }
}

/* Zaria-inspired clean SaaS presentation */
:root {
  --z-ink: #151515;
  --z-copy: #084e4f;
  --z-soft: #f9f8fb;
  --z-line: #e8e8e8;
  --z-blue: #1824c8;
  --z-purple: #9672ff;
  --z-shadow-blue: rgba(0, 123, 215, .24);
}

body {
  background: #ffffff !important;
  color: var(--z-ink) !important;
}

body::before {
  background:
    linear-gradient(90deg, rgba(24, 36, 200, .045) 1px, transparent 1px),
    linear-gradient(rgba(24, 36, 200, .045) 1px, transparent 1px) !important;
  background-size: 42px 42px !important;
  mask-image: linear-gradient(180deg, #000 0, rgba(0, 0, 0, .68) 360px, transparent 760px) !important;
}

header {
  position: relative !important;
  top: auto !important;
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  backdrop-filter: none !important;
  padding: 0 24px !important;
}

.header-inner {
  max-width: 1200px !important;
  height: 78px !important;
  margin: 0 auto !important;
  padding: 0 24px !important;
  background: #ffffff !important;
  border-right: 1px solid var(--z-line) !important;
  border-bottom: 1px solid var(--z-line) !important;
  border-left: 1px solid var(--z-line) !important;
  border-bottom-left-radius: 8px !important;
  border-bottom-right-radius: 8px !important;
  box-shadow: 0 10px 28px rgba(0, 123, 215, .06) !important;
}

.logo {
  font-size: 18px !important;
  font-weight: 700 !important;
}

.logo-mark {
  width: 32px !important;
  height: 32px !important;
  border-radius: 8px !important;
  background: linear-gradient(270deg, var(--z-purple), var(--z-blue)) !important;
  box-shadow: 0 8px 20px rgba(0, 123, 215, .28), 0 3px 10px rgba(0, 123, 215, .22) !important;
}

nav a,
.nav-more-toggle {
  color: #151515 !important;
  background: transparent !important;
  font-size: 15px !important;
  font-weight: 500 !important;
}

nav a.active,
nav a:hover,
.nav-more-toggle:hover,
.nav-more.active .nav-more-toggle {
  color: var(--z-blue) !important;
  background: #f4f2ff !important;
}

.nav-more-menu,
.mob-nav {
  border: 1px solid var(--z-line) !important;
  border-radius: 8px !important;
  background: #ffffff !important;
  box-shadow: 0 18px 40px rgba(21, 21, 21, .08) !important;
}

.hero {
  max-width: 1200px !important;
  padding: 78px 24px 40px !important;
  text-align: center !important;
}

.hero-badge,
.eyebrow {
  margin-left: auto !important;
  margin-right: auto !important;
  padding: 9px 14px !important;
  border: 1px solid var(--z-line) !important;
  border-radius: 8px !important;
  background: #ffffff !important;
  color: var(--z-copy) !important;
  box-shadow: 0 8px 20px rgba(0, 123, 215, .08) !important;
  text-transform: none !important;
}

.hero h1 {
  max-width: 860px !important;
  margin: 20px auto 16px !important;
  color: var(--z-ink) !important;
  font-size: clamp(44px, 6vw, 68px) !important;
  line-height: 1.04 !important;
  font-weight: 700 !important;
  text-align: center !important;
  letter-spacing: 0 !important;
}

.hero h1 .accent-word,
.highlight-text,
.accent-word {
  background-image: linear-gradient(270deg, var(--z-purple), var(--z-blue)) !important;
  -webkit-text-fill-color: transparent !important;
  -webkit-background-clip: text !important;
  background-clip: text !important;
  color: transparent !important;
}

.hero-sub,
.hero p {
  max-width: none !important;
  margin-right: auto !important;
  margin-left: auto !important;
  color: var(--z-copy) !important;
  font-size: 17px !important;
  line-height: 1.62 !important;
  font-weight: 500 !important;
  text-align: center !important;
}

.hero-meta {
  justify-content: center !important;
  margin-top: 24px !important;
}

.hero-meta span:not(.hero-meta-sep) {
  min-height: 38px !important;
  border: 1px solid var(--z-line) !important;
  border-radius: 8px !important;
  background: #ffffff !important;
  color: var(--z-copy) !important;
  box-shadow: 0 8px 20px rgba(0, 123, 215, .06) !important;
}

#solver {
  max-width: 1200px !important;
  padding-top: 6px !important;
}

body > #solver,
section#solver {
  position: relative !important;
  max-width: none !important;
  margin-top: 0 !important;
  padding: 28px 24px 72px !important;
  overflow: hidden !important;
  background:
    radial-gradient(circle at 20% 18%, rgba(255, 255, 255, .30) 0 1px, transparent 1.7px),
    linear-gradient(180deg, rgba(255, 255, 255, .96) 0%, rgba(180, 150, 255, .62) 28%, #6f55f6 62%, #1824c8 100%) !important;
  background-size: 18px 18px, auto !important;
}

body > #solver::before,
section#solver::before {
  content: "" !important;
  position: absolute !important;
  inset: 0 !important;
  pointer-events: none !important;
  background:
    radial-gradient(circle at 50% -12%, rgba(255, 255, 255, .70), transparent 30%),
    linear-gradient(180deg, rgba(255, 255, 255, .65), transparent 46%) !important;
}

body > #solver > *,
section#solver > * {
  position: relative !important;
  z-index: 1 !important;
  max-width: 1200px !important;
  margin-right: auto !important;
  margin-left: auto !important;
}

.tool-shell,
.tool-focus-card {
  border: 1px solid var(--z-line) !important;
  border-radius: 8px !important;
  background: #ffffff !important;
  box-shadow: 0 24px 70px rgba(0, 123, 215, .12), 0 8px 24px rgba(21, 21, 21, .05) !important;
}

.tool-shell {
  position: relative !important;
  isolation: isolate !important;
  overflow: visible !important;
}

.tool-shell::before {
  content: "" !important;
  position: absolute !important;
  inset: -32px -24px -72px !important;
  z-index: -1 !important;
  border-radius: 0 !important;
  pointer-events: none !important;
  background:
    radial-gradient(circle at 18% 22%, rgba(255, 255, 255, .34) 0 1px, transparent 1.7px),
    linear-gradient(180deg, rgba(255, 255, 255, .96) 0%, rgba(181, 151, 255, .70) 28%, #7657fb 62%, #1824c8 100%) !important;
  background-size: 18px 18px, auto !important;
}

#solver .tool-shell::before {
  display: none !important;
}

.tool-tabbar {
  padding: 24px !important;
  background: #ffffff !important;
  border-bottom: 1px solid var(--z-line) !important;
}

.tool-content {
  background: #ffffff !important;
  padding: 28px !important;
}

.input-method-label,
.opt-label,
.section-heading {
  color: var(--z-ink) !important;
  font-weight: 600 !important;
  text-transform: none !important;
}

.input-mode-btn,
.upload-zone,
.board-section,
.blocks-panel,
.block-slot,
.metric-card,
.step-item,
.result-note,
.scan-box,
.tips-box,
.manual-note,
.recognition-state,
.output-panel {
  border: 1px solid var(--z-line) !important;
  border-radius: 8px !important;
  background: #ffffff !important;
  box-shadow: none !important;
}

.input-mode-btn.active,
.input-mode-btn:hover {
  border-color: rgba(24, 36, 200, .25) !important;
  background: #f9f8fb !important;
}

.upload-zone {
  background: var(--z-soft) !important;
  border-style: solid !important;
}

.btn-solve,
.page-cta,
.submit-btn {
  border: 0 !important;
  border-radius: 8px !important;
  background-image: linear-gradient(270deg, var(--z-purple), var(--z-blue)) !important;
  box-shadow: 0 8px 20px var(--z-shadow-blue), 0 3px 10px rgba(0, 123, 215, .22), 0 2px 5px rgba(0, 123, 215, .18) !important;
}

.btn-solve:hover,
.page-cta:hover,
.submit-btn:hover {
  box-shadow: none !important;
  transform: translateY(-1px) !important;
}

.mode-selector {
  background: #ffffff !important;
  border: 1px solid var(--z-line) !important;
  border-radius: 8px !important;
}

.mode-btn.active,
.opt-btn.active {
  color: #ffffff !important;
  background-image: linear-gradient(270deg, var(--z-purple), var(--z-blue)) !important;
}

.grid-wrap,
.game-grid {
  background: var(--z-soft) !important;
  border: 1px solid var(--z-line) !important;
}

.cell {
  background: #ffffff !important;
  border-color: var(--z-line) !important;
}

.cell.filled,
.mini-cell.filled,
.board-mini-preview span.filled {
  background-image: linear-gradient(270deg, var(--z-purple), var(--z-blue)) !important;
}

.article-home-shell,
.article-shell,
.support-shell,
.contact-shell,
.legal-shell {
  max-width: 1200px !important;
  padding-top: 56px !important;
}

.article-home-card,
.article-card,
.support-card,
.contact-card,
.contact-form-card,
.legal-card {
  border: 1px solid var(--z-line) !important;
  border-radius: 8px !important;
  background: #ffffff !important;
  box-shadow: none !important;
  padding: 44px !important;
}

.article-home-card h2,
.article-card h1,
.article-card h2,
.content-section-heading,
.support-card h1,
.contact-card h1,
.legal-card h1 {
  color: var(--z-ink) !important;
  font-weight: 600 !important;
  text-align: left !important;
  letter-spacing: 0 !important;
}

.article-home-card h2,
.article-card h2,
.content-section-heading {
  display: inline-block !important;
  width: fit-content !important;
  max-width: 100% !important;
  margin-top: 42px !important;
  margin-bottom: 18px !important;
  padding: 10px 16px !important;
  border-radius: 8px !important;
  background-image: linear-gradient(270deg, var(--z-purple), var(--z-blue)) !important;
  color: #ffffff !important;
  box-shadow: 0 8px 20px rgba(0, 123, 215, .18), 0 3px 10px rgba(0, 123, 215, .14) !important;
  -webkit-text-fill-color: #ffffff !important;
}

.article-home-card h2:first-child,
.article-card h2:first-child,
.article-card > .content-section-heading:first-of-type {
  margin-top: 0 !important;
}

.article-home-card h2 {
  font-size: 28px !important;
  line-height: 1.16 !important;
}

.article-home-card p,
.article-card p,
.support-card p,
.contact-card p,
.legal-card p,
.faq-block-answer p {
  max-width: none !important;
  color: var(--z-copy) !important;
  font-weight: 400 !important;
}

.faq-block,
.article-home-link,
.related-card {
  border: 1px solid var(--z-line) !important;
  border-radius: 8px !important;
  background: #ffffff !important;
}

.faq-block.active,
.article-home-link:hover,
.related-card:hover {
  background: var(--z-soft) !important;
  border-color: rgba(24, 36, 200, .22) !important;
}

.footer-simple,
footer {
  border-top: 1px solid var(--z-line) !important;
  background: #ffffff !important;
}

@media (max-width: 820px) {
  header {
    padding: 0 12px !important;
  }

  .header-inner {
    height: 68px !important;
    padding: 0 16px !important;
  }

  .hero {
    padding-top: 34px !important;
    padding-bottom: 18px !important;
  }

  .hero h1 {
    font-size: 42px !important;
  }

  .tool-tabbar,
  .tool-content,
  .article-home-card,
  .article-card {
    padding: 20px !important;
  }

  .article-home-card h2 {
    font-size: 28px !important;
  }

  body > #solver,
  section#solver {
    padding-top: 16px !important;
    padding-bottom: 54px !important;
  }

  .tool-shell::before {
    inset: -18px -16px -54px !important;
  }
}

h2,
.article-home-card h2,
.article-card h2,
.content-section-heading {
  font-size: 28px !important;
}

.tool-shell,
.tool-focus-card,
#solver .tool-shell {
  border-radius: 8px !important;
  overflow: hidden !important;
}

.tool-tabbar {
  border-radius: 8px 8px 0 0 !important;
}

.tool-content {
  border-radius: 0 0 8px 8px !important;
}

.tool-shell > *,
.tool-focus-card > * {
  border-radius: inherit;
}

.article-home-links,
.related-links {
  display: grid !important;
  grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
  gap: 18px !important;
}

.article-home-link,
.related-card {
  position: relative !important;
  display: flex !important;
  min-height: 190px !important;
  padding: 24px !important;
  flex-direction: column !important;
  justify-content: space-between !important;
  overflow: hidden !important;
  border: 1px solid #e4e7ee !important;
  border-radius: 8px !important;
  background:
    linear-gradient(#ffffff, #ffffff) padding-box,
    linear-gradient(180deg, rgba(150, 114, 255, .42), rgba(24, 36, 200, .06)) border-box !important;
  box-shadow: 0 12px 30px rgba(21, 21, 21, .05) !important;
  text-decoration: none !important;
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease !important;
}

.article-home-link::before,
.related-card::before {
  content: "" !important;
  position: absolute !important;
  inset: 0 0 auto 0 !important;
  height: 4px !important;
  background-image: linear-gradient(270deg, var(--z-purple), var(--z-blue)) !important;
}

.article-home-link::after,
.related-card::after {
  content: "Explore \2192" !important;
  display: inline-flex !important;
  width: fit-content !important;
  margin-top: 18px !important;
  color: var(--z-blue) !important;
  font-size: 14px !important;
  font-weight: 700 !important;
}

.article-home-link:hover,
.related-card:hover {
  transform: translateY(-3px) !important;
  border-color: rgba(24, 36, 200, .28) !important;
  box-shadow: 0 18px 42px rgba(24, 36, 200, .11) !important;
  background:
    linear-gradient(180deg, #ffffff 0%, #fbfaff 100%) padding-box,
    linear-gradient(180deg, rgba(150, 114, 255, .70), rgba(24, 36, 200, .18)) border-box !important;
  text-decoration: none !important;
}

.article-home-link span,
.related-card span {
  display: inline-flex !important;
  width: fit-content !important;
  margin-bottom: 14px !important;
  padding: 7px 11px !important;
  border-radius: 999px !important;
  background: #eef3ff !important;
  color: #6677a5 !important;
  font-size: 11px !important;
  line-height: 1 !important;
  font-weight: 800 !important;
  text-transform: uppercase !important;
}

.article-home-link strong,
.related-card strong {
  display: block !important;
  margin-bottom: 12px !important;
  color: var(--z-ink) !important;
  font-size: 20px !important;
  line-height: 1.18 !important;
  font-weight: 700 !important;
}

.article-home-link p,
.related-card p {
  margin: 0 !important;
  color: var(--z-copy) !important;
  font-size: 16px !important;
  line-height: 1.65 !important;
}

.article-home-link > :last-child,
.related-card > :last-child {
  margin-bottom: 0 !important;
}

@media (max-width: 900px) {
  .article-home-links,
  .related-links {
    grid-template-columns: 1fr !important;
  }

  .article-home-link,
  .related-card {
    min-height: 0 !important;
  }
}

@media (max-width: 640px) {
  .input-method-switch {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }

  .input-mode-btn {
    position: relative !important;
    min-height: 0 !important;
    padding: 18px !important;
    border-radius: 8px !important;
    text-align: left !important;
  }

  .input-mode-btn.active {
    border-color: rgba(24, 36, 200, .42) !important;
    background: linear-gradient(180deg, #ffffff 0%, #f7f5ff 100%) !important;
    box-shadow: 0 10px 28px rgba(24, 36, 200, .10) !important;
  }

  .input-mode-btn.active::after {
    content: "Selected" !important;
    position: absolute !important;
    top: 12px !important;
    right: 12px !important;
    width: auto !important;
    height: auto !important;
    padding: 4px 8px !important;
    border-radius: 999px !important;
    background-image: linear-gradient(270deg, var(--z-purple), var(--z-blue)) !important;
    color: #ffffff !important;
    font-size: 10px !important;
    line-height: 1 !important;
    font-weight: 800 !important;
    text-transform: uppercase !important;
    box-shadow: none !important;
  }

  .input-mode-hint {
    margin-bottom: 10px !important;
    padding-right: 82px !important;
    color: var(--z-blue) !important;
    font-size: 11px !important;
    line-height: 1.1 !important;
  }

  .input-mode-top {
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
    margin-bottom: 10px !important;
  }

  .input-mode-icon,
  .input-mode-top svg {
    display: inline-flex !important;
    width: 28px !important;
    height: 28px !important;
    padding: 6px !important;
    align-items: center !important;
    justify-content: center !important;
    border-radius: 8px !important;
    background: #eef3ff !important;
    color: var(--z-blue) !important;
    flex: 0 0 auto !important;
  }

  .input-mode-title {
    font-size: 18px !important;
    line-height: 1.15 !important;
  }

  .input-mode-copy {
    max-width: none !important;
    color: var(--z-copy) !important;
    font-size: 14px !important;
    line-height: 1.55 !important;
  }
}

.manual-layout {
  width: 100% !important;
  max-width: none !important;
  margin: 0 !important;
  display: grid !important;
  grid-template-columns: minmax(0, 1fr) 300px !important;
  gap: 24px !important;
  align-items: stretch !important;
}

.board-section,
.blocks-panel {
  width: 100% !important;
  min-width: 0 !important;
}

.board-section {
  display: flex !important;
  flex-direction: column !important;
}

.board-section .section-heading,
.blocks-panel > .section-heading {
  margin-bottom: 14px !important;
}

.grid-wrap {
  width: 100% !important;
  min-height: 480px !important;
  box-sizing: border-box !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 24px !important;
}

.game-grid {
  grid-template-columns: repeat(8, 42px) !important;
  grid-template-rows: repeat(8, 42px) !important;
  gap: 5px !important;
}

.cell {
  width: 42px !important;
  height: 42px !important;
}

.coord-label {
  width: 42px !important;
}

.coords-col .coord-label {
  width: 18px !important;
  height: 42px !important;
}

.grid-controls {
  width: 100% !important;
  justify-content: center !important;
  gap: 10px !important;
}

.grid-controls .ctrl-btn {
  min-height: 38px !important;
  padding: 8px 16px !important;
}

.blocks-panel {
  width: 300px !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 14px !important;
}

.block-slot {
  flex: 1 1 0 !important;
  min-height: 170px !important;
  padding: 18px !important;
  display: flex !important;
  flex-direction: column !important;
  justify-content: space-between !important;
}

.mini-grid {
  width: fit-content !important;
  margin: 0 0 12px !important;
}

.block-nav {
  display: grid !important;
  grid-template-columns: 1fr 1fr !important;
  gap: 8px !important;
}

.block-nav .nav-btn {
  min-height: 34px !important;
}

.blocks-panel {
  align-self: start !important;
  overflow: visible !important;
}

.block-slot {
  flex: none !important;
  min-height: 0 !important;
  height: auto !important;
  gap: 14px !important;
  justify-content: flex-start !important;
  box-sizing: border-box !important;
  overflow: hidden !important;
}

.block-slot .mini-grid {
  margin-bottom: 0 !important;
}

.block-nav {
  width: 100% !important;
  margin-top: 2px !important;
}

.block-nav .nav-btn {
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
  white-space: nowrap !important;
}

.section-heading::after,
.output-title::after,
.recognition-title::after,
.block-slot-label::after {
  content: none !important;
  display: none !important;
}

.section-heading,
.output-title,
.recognition-title {
  display: block !important;
  width: auto !important;
  border: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
}

.board-section,
.blocks-panel {
  padding: 18px !important;
  border: 1px solid var(--z-line) !important;
  border-radius: 8px !important;
  background: #ffffff !important;
  box-sizing: border-box !important;
}

.board-section .section-heading,
.blocks-panel > .section-heading {
  margin: 0 0 16px !important;
  padding: 0 !important;
  color: var(--z-ink) !important;
  font-size: 13px !important;
  line-height: 1.25 !important;
  font-weight: 700 !important;
  text-transform: none !important;
}

.board-section .grid-wrap {
  margin-top: 0 !important;
}

@media (max-width: 980px) {
  .manual-layout {
    grid-template-columns: 1fr !important;
  }

  .grid-wrap {
    min-height: 0 !important;
  }

  .blocks-panel {
    width: 100% !important;
    display: grid !important;
    grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
  }

  .blocks-panel > .section-heading {
    grid-column: 1 / -1 !important;
  }
}

@media (max-width: 640px) {
  .manual-layout {
    gap: 18px !important;
  }

  .grid-wrap {
    padding: 14px 10px !important;
    overflow-x: auto !important;
    align-items: flex-start !important;
  }

  .game-grid {
    grid-template-columns: repeat(8, 32px) !important;
    grid-template-rows: repeat(8, 32px) !important;
    gap: 4px !important;
  }

  .cell {
    width: 32px !important;
    height: 32px !important;
  }

  .coord-label {
    width: 32px !important;
  }

  .coords-col .coord-label {
    width: 16px !important;
    height: 32px !important;
  }

  .grid-controls {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
  }

  .blocks-panel {
    grid-template-columns: 1fr !important;
    gap: 14px !important;
  }

  .block-slot {
    min-height: 0 !important;
    padding: 18px !important;
    gap: 14px !important;
    overflow: hidden !important;
  }

  .block-nav {
    grid-template-columns: 1fr 1fr !important;
    gap: 10px !important;
  }
}