:root {
  --bg: #0c1a1f;
  --bg-elevated: #13262e;
  --bg-soft: #1a333d;
  --ink: #e8f1f4;
  --ink-muted: #9bb4be;
  --line: rgba(232, 241, 244, 0.12);
  --accent: #3ecfbe;
  --accent-deep: #1a9e8f;
  --warn: #e8b86d;
  --danger: #e07a7a;
  --ok: #6dce8b;
  --radius: 14px;
  --font-display: "Fraunces", "Georgia", serif;
  --font-body: "Manrope", system-ui, sans-serif;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --max: 1080px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(62, 207, 190, 0.18), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(232, 184, 109, 0.1), transparent 50%),
    linear-gradient(180deg, #0a1519 0%, var(--bg) 40%, #0e1f26 100%);
  line-height: 1.55;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: #7fe3d5;
}

img {
  max-width: 100%;
}

.wrap {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(12, 26, 31, 0.82);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}

.logo span {
  color: var(--accent);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.1rem;
  font-size: 0.92rem;
}

.nav a {
  color: var(--ink-muted);
  text-decoration: none;
}

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

.breadcrumbs {
  padding: 1rem 0 0;
  font-size: 0.88rem;
  color: var(--ink-muted);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin-left: 0.5rem;
  color: color-mix(in srgb, var(--ink-muted) 70%, transparent);
}

.breadcrumbs a {
  color: var(--ink-muted);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--accent);
}

.breadcrumbs [aria-current="page"] {
  color: var(--ink);
}

.hero {
  padding: 3.2rem 0 2rem;
}

.breadcrumbs + .hero,
.breadcrumbs + .tool-page {
  padding-top: 1.25rem;
}

.hero h1 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.hero p {
  margin: 0;
  max-width: 38rem;
  color: var(--ink-muted);
  font-size: 1.05rem;
}

.section {
  padding: 1.5rem 0 3rem;
}

.section-title {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  margin-bottom: 1rem;
}

.section-head .section-title {
  margin: 0;
}

.section-all {
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 0.92rem;
}

.section-all:hover {
  color: var(--accent);
}

.section-card {
  border-color: color-mix(in srgb, var(--accent) 22%, var(--line));
}

.h3-reset {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 650;
}

.cta-weping {
  border-color: color-mix(in srgb, var(--warn) 40%, var(--line));
  background: rgba(232, 184, 109, 0.08);
}

.cta-stack {
  display: grid;
  gap: 0.75rem;
  margin-top: 1rem;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.9rem;
}

.tool-card {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 1.1rem 1.15rem;
  background: color-mix(in srgb, var(--bg-elevated) 88%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.15s ease, transform 0.15s ease, background 0.15s ease;
}

.tool-card:hover {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  background: var(--bg-soft);
  transform: translateY(-2px);
  color: inherit;
}

.tool-card h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 650;
}

.tool-card p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.badge {
  display: inline-flex;
  align-self: flex-start;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent-deep);
  background: rgba(62, 207, 190, 0.14);
}

.tool-page {
  padding: 2rem 0 3.5rem;
}

.tool-page h1 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  letter-spacing: -0.02em;
}

.lead {
  margin: 0 0 1.5rem;
  color: var(--ink-muted);
  max-width: 40rem;
}

.panel {
  display: grid;
  gap: 1.25rem;
  padding: 1.25rem;
  background: rgba(19, 38, 46, 0.92);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 2px);
  box-shadow: var(--shadow);
}

@media (min-width: 820px) {
  .panel.split {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: start;
  }
}

.field {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 0.85rem;
}

.field label {
  font-size: 0.88rem;
  color: var(--ink-muted);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #0b161b;
  color: var(--ink);
  font: inherit;
}

.field textarea {
  min-height: 140px;
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 55%, transparent);
  outline-offset: 1px;
}

.row-2 {
  display: grid;
  gap: 0.75rem;
}

@media (min-width: 560px) {
  .row-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1rem;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #04201c;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.btn:hover {
  filter: brightness(1.05);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.25rem;
}

.result {
  padding: 1rem;
  border-radius: 12px;
  background: #0b161b;
  border: 1px solid var(--line);
}

.result h2 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  color: var(--ink-muted);
  font-weight: 600;
}

.result-value {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.02em;
}

.result dl {
  display: grid;
  gap: 0.55rem;
  margin: 0;
}

.result dt {
  font-size: 0.82rem;
  color: var(--ink-muted);
}

.result dd {
  margin: 0.1rem 0 0;
  font-size: 1.05rem;
  font-weight: 650;
}

.muted {
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.seo-block {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.seo-block h2 {
  margin: 0 0 0.6rem;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.2rem;
}

.related {
  margin-top: 2rem;
}

.cta-box {
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line));
  background: rgba(62, 207, 190, 0.08);
}

.cta-box p {
  margin: 0 0 0.7rem;
}

.swatch {
  width: 100%;
  height: 72px;
  border-radius: 10px;
  border: 1px solid var(--line);
}

.site-footer {
  margin-top: auto;
  padding: 2rem 0 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--ink-muted);
  font-size: 0.88rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
}

.note-todo {
  font-size: 0.8rem;
  opacity: 0.7;
}

.pass {
  color: var(--ok);
}

.fail {
  color: var(--danger);
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92rem;
  word-break: break-all;
}