:root {
    --bg: #f5f7fb;
    --surface: #ffffff;
    --surface-2: #f8fafc;
    --surface-3: #eef2f7;
    --text: #152033;
    --muted: #607086;
    --primary: #f97316;
    --primary-dark: #ea580c;
    --success: #169c5a;
    --border: #d9e1ec;
    --shadow: 0 18px 40px rgba(15, 23, 42, .08);
    --radius: 18px;
}

:root[data-theme="dark"] {
    --bg: #0f1728;
    --surface: #111c31;
    --surface-2: #18243d;
    --surface-3: #22314e;
    --text: #ecf2ff;
    --muted: #a8b4ca;
    --primary: #fb923c;
    --primary-dark: #f97316;
    --success: #4ade80;
    --border: #2c3a56;
    --shadow: 0 18px 40px rgba(0, 0, 0, .28);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Inter, Arial, Helvetica, sans-serif;
    line-height: 1.6;
}
a { color: var(--primary-dark); text-decoration: none; }
a:hover { text-decoration: none; }
img { max-width: 100%; display: block; }
code, pre, .kbd { font-family: Consolas, Monaco, monospace; }

.container { width: min(1220px, calc(100% - 28px)); margin: 0 auto; }
.header {
    position: sticky; top: 0; z-index: 20;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
:root[data-theme="dark"] .header { background: rgba(15,23,40,.88); }
.nav {
    display: flex; justify-content: space-between; align-items: center; gap: 16px;
    padding: 12px 0;
}
.logo {
    display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--text);
}
.logo-badge {
    width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center;
    background: linear-gradient(135deg, var(--primary), #fdba74);
    color: white; box-shadow: var(--shadow);
}
.nav-links { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.nav-links a, .btn {
    border: 1px solid var(--border);
    padding: 10px 14px; border-radius: 12px; color: var(--text);
    background: var(--surface); cursor: pointer; font-weight: 600;
}
.nav-links a:hover, .btn:hover { border-color: #f7b487; }
.btn-primary {
    background: linear-gradient(135deg, var(--primary), #fb923c);
    color: #fff; border-color: transparent;
}
.badge {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 8px; padding: 6px 11px; border-radius: 999px;
    border: 1px solid var(--border); background: var(--surface-2);
    color: var(--muted); font-size: 12px; font-weight: 700; letter-spacing: .01em;
}
.card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); box-shadow: var(--shadow);
}
.hero-card, .tool-card, .post-card, .faq-card { padding: 24px; }

.muted { color: var(--muted); }
.small { font-size: 14px; }
.section { padding: 22px 0 12px; }
.section-title {
    display: flex; justify-content: space-between; align-items: flex-start;
    gap: 16px; margin-bottom: 18px;
}
.section-title h1, .section-title h2 { margin: 10px 0 0; }
.sst-page-title { font-size: clamp(28px, 4.4vw, 42px); line-height: 1.12; }
.sst-subtitle { max-width: 760px; }

.input, textarea, select {
    width: 100%; padding: 14px 16px; border-radius: 14px;
    border: 1px solid var(--border); background: var(--surface);
    color: var(--text); font-size: 15px;
}
textarea { min-height: 170px; resize: vertical; }
.input:focus, textarea:focus, select:focus {
    outline: 0; border-color: #f7a56c; box-shadow: 0 0 0 4px rgba(249, 115, 22, .12);
}

.result-box {
    white-space: pre-wrap; min-height: 180px; padding: 16px;
    border-radius: 16px; border: 1px dashed #f5b287;
    background: linear-gradient(180deg, rgba(249,115,22,.06), rgba(249,115,22,.02));
}
:root[data-theme="dark"] .result-box { border-color: rgba(251,146,60,.5); }

.grid, .sst-tool-grid {
    display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px;
}
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.stack { display: grid; gap: 18px; }
.hero-grid, .sst-mini-metrics-grid {
    display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px;
}
.metric { padding: 18px; }
.metric strong { display: block; font-size: 24px; }

.footer {
    padding: 44px 0 28px;
    color: var(--muted);
}
.footer-shell {
    padding: 28px;
    overflow: hidden;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.25fr repeat(3, minmax(0, .8fr));
    gap: 24px;
}
.footer-logo {
    margin-bottom: 14px;
}
.footer-copy {
    max-width: 520px;
    margin: 0 0 16px;
}
.footer-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.footer-title {
    margin: 4px 0 14px;
    font-size: 16px;
    color: var(--text);
}
.footer-links {
    display: grid;
    gap: 10px;
}
.footer-links a {
    color: var(--muted);
}
.footer-links a:hover,
.footer-bar-links a:hover {
    color: var(--primary-dark);
}
.footer-bar {
    margin-top: 24px;
    padding-top: 18px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}
.footer-bar p {
    margin: 0;
}
.footer-bar-links {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}
.footer-bar-links a {
    color: var(--muted);
}
.flash { padding: 14px 16px; border-radius: 14px; margin-bottom: 16px; }
.flash-success { background: rgba(22,156,90,.12); border: 1px solid rgba(22,156,90,.25); color: var(--success); }
.flash-error { background: rgba(239,68,68,.12); border: 1px solid rgba(239,68,68,.24); color: #b91c1c; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 12px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
.list { margin: 0; padding-left: 20px; }

.sst-home-hero {
    display: grid; grid-template-columns: 1.1fr .9fr; gap: 24px; align-items: center; padding: 34px 0 8px;
}
.sst-home-copy h1 { font-size: clamp(36px, 6vw, 58px); line-height: 1.04; margin: 14px 0 12px; }
.sst-home-panel { padding: 24px; }
.sst-hero-actions, .sst-tool-actions, .sst-action-row, .sst-tag-wrap {
    display: flex; gap: 10px; flex-wrap: wrap;
}
.sst-mini-metrics { display: grid; gap: 14px; }
.sst-mini-metrics strong { display: block; font-size: 22px; margin-top: 4px; }
.sst-category-grid { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:18px; }
.sst-cat-card { padding: 20px; }
.sst-cat-card h3 { margin-top: 0; }

.sst-search-wrap { padding: 18px; margin-bottom: 18px; }
.sst-filter-btn { background: var(--surface); cursor: pointer; }
.sst-filter-btn.is-active { background: rgba(249,115,22,.12); border-color: #f7b487; color: var(--primary-dark); }
.sst-tool-card { padding: 20px; display:flex; flex-direction:column; gap:12px; }
.sst-tool-card h3 { margin: 0; font-size: 22px; }
.sst-tool-card-top { display:flex; justify-content:space-between; align-items:center; gap:10px; }
.sst-tool-actions { margin-top: auto; }

.sst-breadcrumbs {
    display:flex; gap:8px; flex-wrap:wrap; align-items:center; font-size:14px; margin-bottom:16px; color: var(--muted);
}
.sst-breadcrumbs span:last-child { color: var(--text); font-weight: 700; }
.sst-tool-shell {
    display:grid; grid-template-columns: minmax(0,1.15fr) minmax(340px,.85fr); gap: 22px; padding: 22px;
}
.sst-tool-main, .sst-tool-side { display:grid; gap:18px; }
.sst-tool-header h2, .sst-panel-head h2, .sst-panel-head h3 { margin: 0; }
.sst-panel {
    background: var(--surface-2); border: 1px solid var(--border); border-radius: 16px; padding: 16px;
}
.sst-panel-head {
    display:flex; justify-content:space-between; align-items:center; gap:12px; margin-bottom:12px;
}
.sst-code-block {
    padding: 14px; margin: 0; border-radius: 14px; background: var(--surface); border: 1px solid var(--border); white-space: pre-wrap;
}
.sst-sample-output { display:grid; gap:12px; }
.sst-output-row {
    padding: 12px 14px; border-radius: 12px; background: var(--surface); border: 1px solid var(--border);
}
.sst-field + .sst-field { margin-top: 14px; }
.sst-options { display:flex; flex-wrap:wrap; gap:10px; margin-top:16px; }
.sst-check {
    display:inline-flex; align-items:center; gap:8px; padding: 10px 12px; border:1px solid var(--border); border-radius:12px; background: var(--surface-2);
}
.sst-note {
    width: 100%; padding: 12px 14px; border-radius: 12px; background: rgba(249,115,22,.08); color: var(--muted);
}
.sst-tabs { display:grid; gap:12px; }
.sst-tab-buttons { display:flex; gap:8px; flex-wrap:wrap; }
.sst-tab-btn {
    border:1px solid var(--border); background: var(--surface-2); color: var(--text);
    border-radius: 12px; padding: 10px 14px; font-weight: 700; cursor:pointer;
}
.sst-tab-btn.is-active { background: rgba(249,115,22,.12); border-color: #f7b487; color: var(--primary-dark); }
.sst-tab-panel { display:none; }
.sst-tab-panel.is-active { display:block; }
.sst-three-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:18px; margin-top:18px; }
.sst-info-card { padding:20px; }
.sst-article-block { padding: 24px; margin-top: 18px; }

.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.admin-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

@media (max-width: 980px) {
    .footer-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}

@media (max-width: 1100px) {
    .sst-tool-shell, .sst-home-hero, .admin-grid { grid-template-columns: 1fr; }
    .sst-category-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}

@media (max-width: 860px) {
    .grid, .sst-tool-grid, .sst-three-grid, .grid-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
}

@media (max-width: 640px) {
    .nav { align-items: flex-start; flex-direction: column; }
    .grid, .sst-tool-grid, .form-grid, .sst-three-grid, .grid-2, .hero-grid, .sst-mini-metrics-grid, .sst-category-grid, .footer-grid { grid-template-columns: 1fr; }
    .container { width: min(100% - 20px, 1220px); }
    .section-title { flex-direction: column; }
    .sst-tool-shell { padding: 16px; }
    .footer-shell { padding: 22px; }
    .footer-bar { align-items: flex-start; flex-direction: column; }
}


select.input { appearance: none; }
.result-box { min-height: 220px; }
.sst-result-grid { display:grid; gap:12px; }
.sst-result-card { padding:12px 14px; border:1px solid var(--border); border-radius:12px; background:var(--surface); }
.sst-result-label { font-size:12px; color:var(--muted); font-weight:700; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px; }
.sst-result-value { color:var(--text); }
.sst-result-pre { margin:0; white-space:pre-wrap; font-family:inherit; }
.sst-result-list { margin:0; padding-left:18px; }
.sst-result-list li + li { margin-top:6px; }


.sst-tool-thumb {
    aspect-ratio: 16 / 9;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border);
    background: linear-gradient(135deg, rgba(249,115,22,.12), rgba(249,115,22,.03));
    display: grid;
    place-items: center;
    color: var(--primary-dark);
    font-size: 42px;
    font-weight: 800;
}
.sst-tool-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.sst-tool-card h3 {
    display: flex;
    align-items: center;
    gap: 10px;
}
.sst-thumb-input-note {
    margin-top: 8px;
}
.sst-result-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--surface-2);
    color: var(--primary-dark);
    font-weight: 700;
    word-break: break-all;
}
.sst-hero-preview-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0,1fr));
    gap: 18px;
}
.sst-file-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0,1fr));
    gap: 14px;
}
@media (max-width: 640px) {
    .sst-file-grid, .sst-hero-preview-grid { grid-template-columns: 1fr; }
}


.sst-two-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:18px; }
@media (max-width: 860px) { .sst-two-grid { grid-template-columns:1fr; } }


.sst-premium-hero {
    display:grid;
    grid-template-columns: minmax(0,1.15fr) minmax(320px,.85fr);
    gap: 24px;
    align-items: stretch;
}
.sst-premium-copy {
    padding: 30px 0 8px;
}
.sst-premium-copy h1 {
    font-size: clamp(40px, 7vw, 68px);
    line-height: 1;
    margin: 12px 0 14px;
}
.sst-premium-side {
    display:grid;
    gap:18px;
    padding: 24px 0 8px;
}
.sst-hero-search {
    margin-top: 18px;
    padding: 16px;
    display:grid;
    grid-template-columns: minmax(0,1fr) auto;
    gap: 12px;
}
.sst-glass-card {
    padding: 22px;
    background: linear-gradient(180deg, rgba(255,255,255,.9), rgba(255,255,255,.82));
}
:root[data-theme="dark"] .sst-glass-card {
    background: linear-gradient(180deg, rgba(17,28,49,.92), rgba(17,28,49,.85));
}
.sst-trust-strip {
    padding: 18px;
    display:grid;
    grid-template-columns: repeat(3, minmax(0,1fr));
    gap: 14px;
}
.sst-category-grid-large {
    grid-template-columns: repeat(4, minmax(0,1fr));
}
.sst-category-landing-card {
    padding: 20px;
    display:flex;
    flex-direction:column;
    gap: 12px;
}
.sst-category-icon {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    display:grid;
    place-items:center;
    font-size: 28px;
    background: linear-gradient(135deg, rgba(249,115,22,.18), rgba(249,115,22,.05));
    border: 1px solid var(--border);
}
.sst-category-metrics {
    grid-template-columns: repeat(2, minmax(0,1fr));
}
.sst-category-hero {
    padding: 24px;
    display:grid;
    grid-template-columns: minmax(0,1.1fr) minmax(280px,.9fr);
    gap: 20px;
}
.sst-category-stats {
    display:grid;
    grid-template-columns: repeat(2, minmax(0,1fr));
    gap: 14px;
}
@media (max-width: 980px) {
    .footer-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}

@media (max-width: 1100px) {
    .sst-premium-hero, .sst-category-hero { grid-template-columns: 1fr; }
    .sst-category-grid-large { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 640px) {
    .sst-hero-search { grid-template-columns: 1fr; }
    .sst-trust-strip, .sst-category-stats, .sst-category-grid-large { grid-template-columns: 1fr; }
}


.sst-two-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:18px; }
.sst-category-hero { display:grid; grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr); gap:22px; padding:24px; }
.sst-category-side-stack { display:grid; gap:16px; }
.sst-category-hero-media { padding:14px; }
.sst-category-hero-media img, .sst-category-visual img, .sst-related-category-link img {
    width:100%; border-radius:18px; border:1px solid var(--border); object-fit:cover; background:var(--surface-2);
}
.sst-category-visual {
    border:1px solid var(--border); border-radius:18px; overflow:hidden; background:var(--surface-2); margin:8px 0 14px;
}
.sst-category-icon { display:grid; place-items:center; min-height:180px; font-size:56px; }
.sst-category-stats { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px; }
.sst-category-landing-card, .sst-related-category-card, .sst-link-hub-card { padding:20px; }
.sst-inline-links { display:flex; gap:8px; flex-wrap:wrap; margin:8px 0 2px; }
.sst-inline-links a {
    display:inline-flex; align-items:center; padding:8px 10px; border-radius:999px; background:var(--surface-2); border:1px solid var(--border); color:var(--text); font-size:13px;
}
.sst-inline-links-vertical { display:grid; grid-template-columns:1fr; }
.sst-inline-links-vertical a { border-radius:12px; }
.sst-home-link-hubs, .sst-related-categories-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:18px; }
.sst-related-category-top { display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom:12px; }
.sst-related-category-link { display:block; margin-bottom:12px; }
@media (max-width:1100px) {
    .sst-two-grid, .sst-home-link-hubs, .sst-related-categories-grid, .sst-category-hero { grid-template-columns:1fr; }
}
@media (max-width:640px) {
    .sst-category-stats { grid-template-columns:1fr 1fr; }
}


.sst-monet-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:18px; }
.sst-monet-card { padding:22px; display:flex; flex-direction:column; gap:12px; }
.sst-monet-card h3 { margin:0; font-size:24px; }
.sst-tool-card-compact h3 { font-size:20px; }
.sst-callout-card { border-top: 4px solid rgba(249,115,22,.5); }
@media (max-width:1100px) { .sst-monet-grid { grid-template-columns:1fr; } }


.nav-shell { display:grid; gap:12px; padding:12px 0; }
.nav-main-row { display:grid; grid-template-columns:auto minmax(280px,1fr) auto; gap:14px; align-items:center; }
.nav-search { display:grid; grid-template-columns:minmax(0,1fr) auto; gap:10px; align-items:center; }
.nav-utility { display:flex; gap:10px; align-items:center; justify-content:flex-end; }
.nav-toggle { display:none; }
.nav-dropdown { position:relative; }
.nav-dropdown summary { list-style:none; cursor:pointer; border:1px solid var(--border); padding:10px 14px; border-radius:12px; background:var(--surface); font-weight:600; }
.nav-dropdown summary::-webkit-details-marker { display:none; }
.nav-dropdown-panel { position:absolute; top:calc(100% + 8px); left:0; min-width:240px; padding:10px; background:var(--surface); border:1px solid var(--border); border-radius:16px; box-shadow:var(--shadow); display:grid; gap:8px; z-index:30; }
.nav-dropdown-panel a { padding:10px 12px; border-radius:10px; border:1px solid transparent; }
.nav-dropdown-panel a:hover { border-color:var(--border); background:var(--surface-2); }
@media (max-width: 980px) {
  .nav-main-row { grid-template-columns:1fr auto; }
  .nav-search { grid-column:1 / -1; order:3; }
  .nav-toggle { display:inline-flex; }
  .nav-links { display:none; width:100%; }
  .nav-links.is-open { display:flex; }
}