:root {
  --ink: #14161f;
  --ink-soft: #5a5f72;
  --paper: #ffffff;
  --paper-alt: #f4f3fb;
  --line: #e7e5f3;
  --violet: #6a3df0;
  --violet-dark: #4f28c4;
  --cyan: #17c9c0;
  --magenta: #ef2d82;
  --magenta-dark: #cc1d68;
  --dark-panel: #14121f;
  --dark-panel-2: #211c39;
  --radius-lg: 20px;
  --radius-md: 12px;
  --wrap: 1100px;
  --shadow: 0 10px 30px rgba(30, 20, 70, 0.10);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 22px;
}

a {
  color: var(--violet-dark);
}

h1, h2, h3 {
  color: var(--ink);
  line-height: 1.5;
  font-weight: 800;
  letter-spacing: 0.01em;
}

h2 {
  font-size: 1.5rem;
  margin: 42px 0 18px;
  position: relative;
  padding-left: 16px;
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 5px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--violet), var(--cyan));
}

h3 {
  font-size: 1.06rem;
  margin: 22px 0 10px;
}

p {
  margin: 0 0 15px;
}

ul, ol {
  margin: 0 0 15px;
}

img {
  max-width: 100%;
}

/* PR notice */
.pr-strip {
  background: var(--dark-panel);
  color: #efe9ff;
  text-align: center;
  padding: 10px 12px;
  font-size: 0.8rem;
  font-weight: 700;
}

/* Nav */
.tech-nav {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 45;
}

.tech-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 22px;
  gap: 14px;
}

.tech-logo {
  font-weight: 800;
  font-size: 1.02rem;
  color: var(--ink);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 7px;
}

.tech-logo b {
  background: linear-gradient(90deg, var(--violet), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tech-nav-links {
  display: flex;
  gap: 15px;
  font-size: 0.8rem;
  flex-wrap: wrap;
}

.tech-nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-weight: 600;
}

/* Buttons */
.btn {
  display: inline-block;
  border-radius: 999px;
  font-weight: 800;
  text-decoration: none;
  text-align: center;
  border: none;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.btn-glow {
  background: linear-gradient(90deg, var(--magenta), var(--violet));
  color: #fff;
  box-shadow: 0 10px 24px rgba(239, 45, 130, 0.32);
}

.btn-glow:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(239, 45, 130, 0.4);
}

.btn-line {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--line);
}

.btn-sm {
  padding: 9px 20px;
  font-size: 0.82rem;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1rem;
  width: 100%;
}

@media (min-width: 480px) {
  .btn-lg {
    width: auto;
  }
}

/* Hero */
.glow-hero {
  background: radial-gradient(circle at 15% 20%, rgba(106, 61, 240, 0.16), transparent 55%),
              radial-gradient(circle at 85% 0%, rgba(23, 201, 192, 0.16), transparent 50%),
              var(--paper-alt);
  padding: 46px 0 38px;
}

.glow-kicker {
  display: inline-block;
  background: var(--dark-panel);
  color: #e7e1ff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.glow-hero h1 {
  font-size: 1.7rem;
  margin: 0 0 14px;
}

.glow-hero-lead {
  color: var(--ink-soft);
  font-size: 0.95rem;
  max-width: 640px;
}

.glow-hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 8px;
}

/* Sections */
.sect {
  padding: 40px 0;
}

.sect-dark {
  background: var(--dark-panel);
  color: #d9d5ee;
}

.sect-dark h2 {
  color: #fff;
}

.sect-dark p {
  color: #b7b0d6;
}

.note-flag {
  font-size: 0.83rem;
  color: var(--ink-soft);
  background: var(--paper-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 13px 16px;
}

.note-flag-dark {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  font-size: 0.85rem;
  color: #c7c2e6;
}

/* Spec cards */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.spec-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.spec-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(106, 61, 240, 0.14), rgba(23, 201, 192, 0.14));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
}

.spec-card h3 {
  margin: 6px 0 4px;
  font-size: 1rem;
}

.spec-card p {
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin: 0;
  flex-grow: 1;
}

.spec-card-link {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--magenta-dark);
}

/* Compare table */
.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  margin: 22px 0;
}

.compare-grid {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper);
  min-width: 620px;
}

.compare-grid th,
.compare-grid td {
  padding: 13px 15px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  font-size: 0.86rem;
}

.compare-grid thead th {
  background: var(--dark-panel);
  color: #fff;
}

.compare-grid tbody tr:nth-child(even) {
  background: var(--paper-alt);
}

/* Checklist */
.point-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 18px 0;
}

.point-list li {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 15px 12px 36px;
  position: relative;
  font-size: 0.88rem;
}

.point-list li::before {
  content: "◆";
  position: absolute;
  left: 14px;
  top: 12px;
  color: var(--violet);
  font-size: 0.7rem;
}

/* Step flow */
.step-flow {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 24px 0;
}

.step-flow li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.step-num {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--violet), var(--cyan));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
}

.step-flow h3 {
  margin: 0 0 4px;
}

.step-flow p {
  margin: 0;
  font-size: 0.87rem;
  color: var(--ink-soft);
}

/* Case flag (advertiser-cited example) */
.case-flag {
  border: 1px solid rgba(106, 61, 240, 0.35);
  background: linear-gradient(135deg, rgba(106, 61, 240, 0.06), rgba(23, 201, 192, 0.06));
  border-radius: var(--radius-md);
  padding: 16px 18px;
  margin: 18px 0;
}

.case-flag-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--violet-dark);
  background: rgba(106, 61, 240, 0.12);
  padding: 3px 11px;
  border-radius: 999px;
  margin-bottom: 8px;
}

.case-flag p {
  font-size: 0.86rem;
  margin: 0 0 8px;
}

.case-flag p:last-child {
  margin-bottom: 0;
}

/* Accordion */
.faq-fold {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 22px;
}

.faq-fold-item {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 4px 18px;
}

.faq-fold-item summary {
  cursor: pointer;
  font-weight: 700;
  padding: 14px 0;
  list-style: none;
  position: relative;
  padding-right: 28px;
  font-size: 0.93rem;
}

.faq-fold-item summary::-webkit-details-marker {
  display: none;
}

.faq-fold-item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 12px;
  font-size: 1.25rem;
  color: var(--violet);
}

.faq-fold-item[open] summary::after {
  content: "−";
}

.faq-fold-item p {
  font-size: 0.87rem;
  color: var(--ink-soft);
  margin: 0 0 15px;
}

/* CTA glow panel */
.cta-glow {
  background: linear-gradient(135deg, var(--dark-panel) 0%, var(--dark-panel-2) 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  text-align: center;
  margin: 32px 0;
}

.cta-glow h2 {
  color: #fff;
  padding-left: 0;
  font-size: 1.3rem;
}

.cta-glow h2::before {
  display: none;
}

.cta-glow p {
  color: #c7c2e6;
  font-size: 0.87rem;
}

.cta-fine {
  font-size: 0.75rem;
  color: #a79fcf;
  margin-top: 10px;
}

.ad-slot {
  margin: 20px auto 0;
  max-width: 468px;
  border: 1px dashed #6f63a3;
  border-radius: 10px;
  padding: 14px;
  text-align: center;
}

.ad-slot-label {
  display: inline-block;
  font-size: 0.68rem;
  color: #c7c2e6;
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 10px;
  border-radius: 999px;
  margin-bottom: 8px;
}

.ad-slot-msg {
  font-size: 0.76rem;
  color: #a79fcf;
  margin: 0;
}

/* Related links */
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
  margin: 18px 0;
}

.related-grid a {
  display: block;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 13px 15px;
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--ink);
}

.back-link {
  display: inline-block;
  margin: 26px 0 4px;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--violet-dark);
  text-decoration: none;
}

/* Footer */
.site-foot {
  background: #0d0c17;
  color: #948dc0;
  padding: 36px 0;
}

.foot-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-bottom: 16px;
  font-size: 0.84rem;
}

.foot-links a {
  color: #ece8fb;
  text-decoration: none;
  font-weight: 700;
}

.foot-pr {
  font-weight: 700;
  color: #fff;
  font-size: 0.82rem;
}

.foot-disclaimer {
  font-size: 0.75rem;
  line-height: 1.9;
  color: #766f9c;
}

.foot-meta {
  font-size: 0.75rem;
  color: #564f7c;
  margin: 0;
}

/* Responsive */
@media (max-width: 768px) {
  .glow-hero h1 {
    font-size: 1.4rem;
  }

  h2 {
    font-size: 1.22rem;
  }

  .tech-nav-links {
    display: none;
  }
}