* {
margin: 0;
padding: 0;
box-sizing: border-box;
}

body {
font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
background: #FFFFFF;
color: #17191b;
line-height: 1.5;
font-weight: 350;
-webkit-font-smoothing: antialiased;
}

.setters-grid {
max-width: 1280px;
margin: 0 auto;
padding: 2rem 2rem 1rem;
display: flex;
flex-direction: column;
gap: 5rem;
}

.top-bar {
display: flex;
justify-content: space-between;
align-items: center;
flex-wrap: wrap;
gap: 1.5rem;
border-bottom: 2px solid #17191b;
padding-bottom: 1.2rem;
}

.logo-area {
display: flex;
align-items: center;
}

.logo {
display: block;
max-width: 100%;
height: auto;
object-fit: contain;
filter: brightness(1);
transition: filter 0.2s;
}

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

.main-nav {
display: flex;
gap: 2.5rem;
flex-wrap: wrap;
}

.main-nav a {
text-decoration: none;
color: #313c48;
font-weight: 500;
text-transform: lowercase;
font-size: 1.2rem;
letter-spacing: -0.02em;
transition: all 0.15s;
position: relative;
padding-bottom: 0.2rem;
}

.main-nav a::after {
content: '';
position: absolute;
bottom: 0;
left: 0;
width: 0;
height: 2px;
background: #17191b;
transition: width 0.2s;
}

.main-nav a:hover {
color: #17191b;
}

.main-nav a:hover::after {
width: 100%;
}

.hero {
padding: 1rem 0 0;
position: relative;
}

.hero::before {
content: '';
position: absolute;
top: -2rem;
right: 0;
width: 200px;
height: 200px;
background: radial-gradient(circle, rgba(49,60,72,0.02) 0%, transparent 70%);
pointer-events: none;
z-index: -1;
}

h1 {
font-size: 4.2rem;
font-weight: 600;
letter-spacing: -0.03em;
line-height: 1.1;
color: #17191b;
margin-bottom: 0.75rem;
}

.thin {
font-weight: 350;
color: #313c48;
}

.hero-sub {
font-size: 1.4rem;
color: #313c48;
max-width: 750px;
margin-bottom: 2.5rem;
font-weight: 350;
border-left: 4px solid #313c48;
padding-left: 1.5rem;
}

.stats {
display: flex;
gap: 3rem;
border-top: 1px solid #e1e5e9;
padding-top: 1.8rem;
flex-wrap: wrap;
}

.stat-item {
display: flex;
flex-direction: column;
}

.stat-label {
font-size: 0.85rem;
text-transform: uppercase;
letter-spacing: 0.06em;
color: #6b7a8a;
font-weight: 500;
}

.stat-value {
font-size: 2.2rem;
font-weight: 550;
color: #17191b;
line-height: 1.2;
}

.mirrors {
margin-top: 1rem;
scroll-margin-top: 5rem;
}

h2 {
font-size: 2.2rem;
font-weight: 600;
margin-bottom: 2rem;
letter-spacing: -0.02em;
border-left: 8px solid #17191b;
padding-left: 1.5rem;
display: flex;
align-items: center;
flex-wrap: wrap;
gap: 0.5rem;
}

.links-container {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
gap: 1.8rem;
margin: 2.5rem 0 1rem;
}

.link-card {
background: #f8fafc;
border: 1px solid #eef2f5;
border-radius: 24px;
padding: 1.5rem 1.5rem 1.5rem 1.8rem;
transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
display: flex;
flex-direction: column;
box-shadow: 0 4px 12px rgba(0,0,0,0.02);
}

.link-card:hover {
background: #FFFFFF;
border-color: #313c48;
transform: translateY(-4px) scale(1.01);
box-shadow: 0 20px 30px -16px rgba(23,25,27,0.25);
}

.link-meta {
display: flex;
justify-content: space-between;
font-size: 0.9rem;
color: #64748b;
margin-bottom: 0.75rem;
text-transform: uppercase;
letter-spacing: 0.03em;
font-weight: 500;
}

.link-label {
font-weight: 600;
color: #313c48;
}

.link-latency {
font-family: 'JetBrains Mono', 'SF Mono', monospace;
color: #17191b;
background: #eef2f5;
padding: 0.2rem 0.8rem;
border-radius: 40px;
font-size: 0.8rem;
}

.link-url {
font-family: 'JetBrains Mono', 'SF Mono', monospace;
font-size: 1.2rem;
word-break: break-all;
cursor: pointer;
background: transparent;
padding: 0.25rem 0;
margin: 0.5rem 0 0.8rem;
color: #17191b;
font-weight: 450;
border-bottom: 2px dashed #cbd5e1;
transition: all 0.15s;
}

.link-url:hover {
border-bottom-color: #17191b;
color: #000;
background: rgba(49,60,72,0.02);
}

.copy-btn {
background: transparent;
border: 1.5px solid #17191b;
color: #17191b;
font-size: 1rem;
padding: 0.5rem 1.2rem;
border-radius: 40px;
cursor: pointer;
align-self: flex-start;
font-weight: 500;
transition: all 0.15s;
margin-top: 0.5rem;
letter-spacing: 0.02em;
}

.copy-btn:hover {
background: #313c48;
border-color: #313c48;
color: #FFFFFF;
transform: scale(0.98);
}

.copy-btn:active {
transform: scale(0.95);
}

.footnote {
color: #64748b;
font-size: 0.9rem;
margin-top: 1.2rem;
display: flex;
align-items: center;
gap: 0.5rem;
}

.footnote::before {
content: 'ⓘ';
font-size: 1rem;
opacity: 0.7;
}

.verifier-card {
background: #f8fafc;
border-radius: 32px;
padding: 2.8rem;
max-width: 800px;
border: 1px solid #eef2f5;
transition: box-shadow 0.2s;
}

.verifier-card:hover {
box-shadow: 0 20px 30px -20px rgba(23,25,27,0.15);
}

.verifier-desc {
font-size: 1.2rem;
color: #313c48;
margin-bottom: 2rem;
font-weight: 400;
}

.input-group {
display: flex;
gap: 0.8rem;
flex-wrap: wrap;
}

#linkInput {
flex: 2 1 300px;
background: #FFFFFF;
border: 1.5px solid #e2e8f0;
padding: 1rem 1.5rem;
font-size: 1rem;
border-radius: 60px;
font-family: 'JetBrains Mono', monospace;
color: #17191b;
outline: none;
transition: all 0.2s;
}

#linkInput:focus {
border-color: #17191b;
box-shadow: 0 0 0 4px rgba(23,25,27,0.05);
}

#linkInput::placeholder {
color: #94a3b8;
font-family: 'Inter', sans-serif;
font-size: 0.95rem;
}

.input-group button {
background: #17191b;
border: none;
color: white;
padding: 1rem 2.5rem;
font-size: 1rem;
border-radius: 60px;
cursor: pointer;
font-weight: 500;
transition: all 0.15s;
border: 1.5px solid #17191b;
white-space: nowrap;
letter-spacing: 0.02em;
}

.input-group button:hover {
background: #313c48;
border-color: #313c48;
transform: scale(0.98);
}

.validation-result {
margin-top: 2rem;
font-size: 1.1rem;
font-weight: 500;
padding: 1rem 1.8rem;
border-radius: 60px;
background: #FFFFFF;
border: 1.5px solid transparent;
transition: all 0.2s;
}

.validation-result.success {
border-color: #00a86b;
color: #0b6e3f;
background: #edfbf4;
}

.validation-result.error {
border-color: #d14b4b;
color: #b02b2b;
background: #fef2f2;
}

.features-grid, .product-showcase, .step-guide, .rules, .faq-mini {
scroll-margin-top: 5rem;
}

.features {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
gap: 2rem;
margin: 2rem 0 1rem;
}

.feature-card {
background: #f8fafc;
border-radius: 28px;
padding: 2.2rem 2rem;
transition: all 0.2s;
border: 1px solid #eef2f5;
}

.feature-card:hover {
background: #FFFFFF;
border-color: #313c48;
transform: translateY(-4px);
box-shadow: 0 20px 25px -16px #17191b30;
}

.feature-icon {
font-size: 2.6rem;
display: block;
margin-bottom: 1.4rem;
line-height: 1;
}

.feature-card h3 {
font-size: 1.4rem;
font-weight: 600;
margin-bottom: 1rem;
color: #17191b;
}

.feature-card p {
color: #475569;
font-size: 1rem;
line-height: 1.6;
}

.category-cloud {
display: flex;
flex-wrap: wrap;
gap: 0.8rem 1.2rem;
margin: 2rem 0 1rem;
}

.category-tag {
background: #f1f4f7;
padding: 0.5rem 1.6rem;
border-radius: 60px;
font-size: 1.05rem;
font-weight: 450;
color: #17191b;
border: 1px solid transparent;
transition: all 0.15s;
cursor: default;
}

.category-tag:hover {
border-color: #313c48;
background: #FFFFFF;
transform: scale(1.02);
}

.showcase-note {
color: #5f6b78;
margin-top: 1.8rem;
font-style: italic;
padding-left: 1rem;
border-left: 3px solid #cbd5e1;
}

.step-guide .steps {
display: flex;
flex-direction: column;
gap: 1.2rem;
max-width: 850px;
margin: 2rem 0;
}

.step {
display: flex;
gap: 1.8rem;
align-items: flex-start;
background: #f8fafc;
padding: 1.2rem 2rem 1.2rem 1.2rem;
border-radius: 100px;
border-left: 6px solid #17191b;
transition: all 0.2s;
border: 1px solid #eef2f5;
border-left-width: 6px;
border-left-color: #17191b;
}

.step:hover {
background: #FFFFFF;
border-color: #313c48;
border-left-color: #313c48;
transform: translateX(6px);
box-shadow: 0 8px 16px -12px #17191b;
}

.step-number {
background: #17191b;
color: white;
width: 3rem;
height: 3rem;
display: flex;
align-items: center;
justify-content: center;
border-radius: 60px;
font-weight: 600;
font-size: 1.5rem;
flex-shrink: 0;
box-shadow: 0 6px 12px -6px #17191b60;
}

.step-content h4 {
font-size: 1.3rem;
font-weight: 600;
margin-bottom: 0.3rem;
text-transform: lowercase;
color: #17191b;
}

.step-content p {
color: #475569;
}

.rules-list {
display: flex;
flex-direction: column;
gap: 0.8rem;
background: #f8fafc;
padding: 2rem 2.5rem;
border-radius: 32px;
margin: 2rem 0;
border: 1px solid #eef2f5;
}

.rule-item {
display: flex;
align-items: center;
gap: 1rem;
font-size: 1.1rem;
border-bottom: 1px dashed #dce2e9;
padding-bottom: 0.9rem;
color: #1e293b;
}

.rule-item:last-child {
border-bottom: none;
padding-bottom: 0;
}

.rule-bullet {
font-size: 1.6rem;
width: 2.2rem;
opacity: 0.9;
}

.faq-grid {
display: flex;
flex-direction: column;
gap: 0.8rem;
margin: 2rem 0;
}

.faq-item {
background: #f8fafc;
border-radius: 60px;
padding: 0.2rem 2rem;
cursor: pointer;
border: 1px solid #eef2f5;
transition: all 0.2s;
}

.faq-item:hover {
border-color: #a0b3c9;
}

.faq-item[open] {
background: #FFFFFF;
border-color: #313c48;
padding-bottom: 1.5rem;
border-radius: 32px 32px 40px 40px;
}

.faq-item summary {
font-weight: 600;
font-size: 1.2rem;
padding: 1rem 0;
outline: none;
color: #17191b;
list-style: none;
display: flex;
align-items: center;
justify-content: space-between;
}

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

.faq-item summary::after {
content: '＋';
font-size: 1.4rem;
color: #313c48;
transition: transform 0.2s;
}

.faq-item[open] summary::after {
content: '−';
transform: rotate(90deg);
}

.faq-item p {
margin-top: 0.5rem;
color: #475569;
padding: 0 0.5rem 0.5rem 0.5rem;
line-height: 1.6;
}

.footer {
border-top: 2px solid #17191b;
padding: 2.5rem 0 1.5rem;
margin-top: 3rem;
}

.footer-main p {
color: #17191b;
font-size: 1.1rem;
max-width: 700px;
font-weight: 450;
}

.footer-keywords {
color: #64748b;
font-size: 0.9rem;
margin: 1.2rem 0 1.5rem;
word-spacing: 0.4rem;
line-height: 1.7;
background: #f1f4f7;
padding: 0.8rem 1.5rem;
border-radius: 60px;
display: inline-block;
}

.footer-small {
color: #7b8a99;
font-size: 0.9rem;
font-style: italic;
border-top: 1px dashed #d0d7de;
padding-top: 1.5rem;
margin-top: 1rem;
}

@media (max-width: 680px) {
.setters-grid {
padding: 1.5rem 1rem;
gap: 3rem;
}

h1 {
font-size: 2.8rem;
}

.top-bar {
flex-direction: column;
align-items: flex-start;
}

.main-nav {
gap: 1.5rem;
}

.main-nav a {
font-size: 1rem;
}

.hero-sub {
font-size: 1.2rem;
padding-left: 1rem;
}

.stats {
gap: 1.5rem;
}

.stat-value {
font-size: 1.8rem;
}

h2 {
font-size: 1.8rem;
padding-left: 1rem;
}

.links-container {
grid-template-columns: 1fr;
}

.link-card {
padding: 1.2rem;
}

.verifier-card {
padding: 1.8rem;
}

.input-group button {
width: 100%;
}

.step {
flex-direction: column;
border-radius: 40px;
padding: 1.5rem;
gap: 1rem;
}

.step:hover {
transform: translateX(0) translateY(-4px);
}

.step-number {
width: 2.5rem;
height: 2.5rem;
font-size: 1.2rem;
}

.rules-list {
padding: 1.5rem;
}

.rule-item {
font-size: 1rem;
gap: 0.8rem;
}

.faq-item {
padding: 0 1.2rem;
border-radius: 40px;
}

.faq-item summary {
font-size: 1rem;
padding: 0.8rem 0;
}

.footer-keywords {
word-spacing: 0.2rem;
font-size: 0.8rem;
padding: 0.6rem 1rem;
}
}

.stats-footnote {
font-size: 0.8rem;
color: #64748b;
margin-top: 0.5rem;
font-style: italic;
}

.showcase-intro {
font-size: 1.1rem;
color: #313c48;
margin-bottom: 1.5rem;
line-height: 1.6;
max-width: 800px;
}

.verifier-hint {
font-size: 0.85rem;
color: #5f6b78;
margin-top: 1rem;
padding-left: 0.5rem;
border-left: 2px solid #cbd5e1;
}

.category-stats {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
gap: 0.8rem 1.5rem;
margin: 1.5rem 0 0.5rem;
}

.cat-stat {
font-size: 0.95rem;
color: #1e293b;
display: flex;
justify-content: space-between;
border-bottom: 1px dotted #d1d9e2;
padding-bottom: 0.3rem;
}

.cat-stat span {
font-weight: 600;
color: #17191b;
}

.vendor-list {
list-style: none;
padding: 0;
margin: 1.5rem 0;
}

.vendor-list li {
padding: 0.6rem 0 0.6rem 1.8rem;
position: relative;
border-bottom: 1px solid #eef2f5;
color: #334155;
}

.vendor-list li::before {
content: "▹";
position: absolute;
left: 0;
color: #313c48;
font-weight: bold;
}

.vendor-card {
background: #f8fafc;
border-radius: 28px;
padding: 2rem 2.5rem;
border: 1px solid #eef2f5;
margin: 2rem 0;
}

.vendor-card p {
margin-bottom: 1rem;
color: #475569;
}

.guide-intro {
font-size: 1.1rem;
color: #475569;
margin-bottom: 2rem;
padding: 1rem 2rem;
background: #f1f5f9;
border-radius: 60px;
display: inline-block;
}

.guide-notes {
margin-top: 2rem;
padding: 1.2rem 2rem;
background: #fef9e7;
border-left: 4px solid #e6b800;
border-radius: 20px;
color: #5f4d00;
font-size: 0.95rem;
}

.comparison-table {
width: 100%;
border-collapse: collapse;
margin: 2rem 0;
background: #f8fafc;
border-radius: 28px;
overflow: hidden;
border: 1px solid #eef2f5;
}

.comp-row {
display: grid;
grid-template-columns: 2fr 1fr 1fr;
border-bottom: 1px solid #e2e8f0;
}

.comp-row:last-child {
border-bottom: none;
}

.header-row {
background: #17191b;
color: white;
font-weight: 600;
}

.comp-feature, .comp-value, .comp-other {
padding: 1rem 1.5rem;
}

.comp-feature {
font-weight: 500;
color: #1e293b;
}

.header-row .comp-feature,
.header-row .comp-value,
.header-row .comp-other {
color: white;
}

.comp-value {
font-weight: 600;
color: #00a86b;
background: rgba(0,168,107,0.05);
}

.comp-other {
color: #dc2626;
background: rgba(220,38,38,0.02);
}

.comparison-note {
margin-top: 1rem;
font-size: 0.95rem;
color: #475569;
font-style: italic;
padding: 1rem 1.5rem;
background: #f1f5f9;
border-radius: 40px;
}

.testimonial-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
gap: 1.5rem;
margin: 2rem 0;
}

.testimonial {
background: #f8fafc;
border-radius: 24px;
padding: 1.8rem;
border: 1px solid #eef2f5;
transition: all 0.15s;
}

.testimonial:hover {
border-color: #313c48;
transform: translateY(-2px);
box-shadow: 0 12px 20px -16px #17191b;
}

.testimonial-content {
font-size: 0.95rem;
line-height: 1.6;
color: #334155;
margin-bottom: 1rem;
font-style: italic;
position: relative;
padding-left: 1.2rem;
}

.testimonial-content::before {
content: """;
position: absolute;
left: 0;
top: -0.2rem;
font-size: 1.8rem;
color: #94a3b8;
font-family: serif;
}

.testimonial-author {
font-weight: 600;
color: #17191b;
font-size: 0.9rem;
margin-bottom: 0.3rem;
}

.testimonial-rating {
color: #f5b342;
letter-spacing: 2px;
font-size: 1rem;
}

.seo-block {
max-width: 900px;
margin: 0 auto;
}

.seo-block h3 {
font-size: 1.6rem;
font-weight: 600;
margin: 2.5rem 0 1rem;
color: #17191b;
border-left: 6px solid #313c48;
padding-left: 1.2rem;
}

.seo-block p {
margin-bottom: 1.2rem;
color: #334155;
line-height: 1.7;
font-size: 1.05rem;
}

.seo-block p:last-child {
margin-bottom: 0;
}

.footer-keywords {
background: #f1f4f7;
padding: 0.8rem 1.5rem;
border-radius: 60px;
display: inline-block;
font-size: 0.85rem;
color: #475569;
line-height: 1.7;
word-spacing: 0.3rem;
margin: 1rem 0;
}

.footer-main p {
margin-bottom: 1rem;
}

@media (max-width: 680px) {
.stats-footnote {
font-size: 0.75rem;
}

.showcase-intro {
font-size: 1rem;
}

.category-stats {
grid-template-columns: 1fr;
gap: 0.5rem;
}

.vendor-card {
padding: 1.5rem;
}

.vendor-list li {
padding-left: 1.5rem;
font-size: 0.95rem;
}

.guide-intro {
padding: 0.8rem 1.2rem;
font-size: 1rem;
}

.guide-notes {
padding: 1rem 1.2rem;
font-size: 0.9rem;
}

.comp-row {
grid-template-columns: 1fr;
border-bottom: 2px solid #e2e8f0;
}

.header-row {
display: none;
}

.comp-feature, .comp-value, .comp-other {
padding: 0.8rem 1rem;
}

.comp-feature {
background: #f1f5f9;
font-weight: 600;
}

.comp-value, .comp-other {
position: relative;
padding-left: 2rem;
}

.comp-value::before {
content: "BlackOps: ";
position: absolute;
left: 1rem;
font-weight: 600;
color: #17191b;
}

.comp-other::before {
content: "Others: ";
position: absolute;
left: 1rem;
font-weight: 600;
color: #17191b;
}

.testimonial-grid {
grid-template-columns: 1fr;
gap: 1rem;
}

.testimonial {
padding: 1.5rem;
}

.seo-block h3 {
font-size: 1.3rem;
margin: 2rem 0 0.8rem;
padding-left: 0.8rem;
}

.seo-block p {
font-size: 0.95rem;
}

.footer-keywords {
font-size: 0.8rem;
padding: 0.6rem 1rem;
word-spacing: 0.2rem;
line-height: 1.5;
}
}

.link-card {
will-change: transform;
}

.copy-btn, .input-group button, .main-nav a {
will-change: transform;
transition: transform 0.15s, background 0.15s, border-color 0.15s, color 0.15s;
}

.feature-card, .testimonial, .step, .faq-item {
will-change: transform, box-shadow;
}

img {
loading: lazy;
}

@media (prefers-reduced-motion: reduce) {
* {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
scroll-behavior: auto !important;
}
}

.link-url, .copy-btn, .input-group button, .main-nav a {
-webkit-tap-highlight-color: transparent;
}

.category-tag, .stat-item, .link-card, .feature-card, .step, .testimonial, .faq-item {
break-inside: avoid;
}

@supports (content-visibility: auto) {
section {
content-visibility: auto;
contain-intrinsic-size: 0 500px;
}
}

.setters-grid {
contain: content;
}