/* ==========================================================================
   Clean Modern – White Commercial Theme (FINAL CONSOLIDATED ONE FILE)
   Path: /blog/css/clean-modern.css
   ========================================================================== */

/* =========================
   GLOBAL TOKENS
   ========================= */
:root {
    --bg: #fff;
    --fg: #111315;
    --muted: #6b7280;
    --line: #eceff3;
    --card: #fff;
    --shadow: 0 8px 30px rgba(17, 19, 21, 0.06);
    --r: 16px;
    --ink: #111827;
    --accent: #0f172a;

    /* SRS/Stats helpers */
    --sl-line: #eaecef;
    --sl-muted: #6b7280;
    --sl-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);

    /* Speaking heights */
    --speaking-card-h: 520px;
    --speaking-step-h: 240px;
}
@media (max-width: 992px) {
    :root {
        --speaking-card-h: 480px;
        --speaking-step-h: 220px;
    }
}
@media (max-width: 640px) {
    :root {
        --speaking-card-h: 420px;
        --speaking-step-h: 200px;
    }
}

/* =========================
   BASE
   ========================= */
html,
body {
    height: 100%;
}
* {
    box-sizing: border-box;
}
html {
    font-size: 17px;
}
@media (max-width: 640px) {
    html {
        font-size: 16px;
    }
}
body {
    font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
    color: var(--fg);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: 1rem;
    line-height: 1.75;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
a {
    color: inherit;
    text-decoration: none;
}
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}
#posts {
    margin: 50px auto;
}
.shadow {
    box-shadow: 0 2px 16px rgba(17, 19, 21, 0.08);
}
ul {
    margin: 0 0 12px 1.25rem;
    padding: 0;
}
ol {
    margin: 0 0 12px 1.25rem;
    padding: 0;
}

/* =========================
   NAV
   ========================= */
.navbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: #fff;
    border-bottom: 1px solid var(--line);
    backdrop-filter: saturate(180%) blur(6px);
}
.navbar.shadow {
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}
.navbar .container {
    display: flex;
    align-items: center;
    gap: 16px;
    min-height: 64px;
}
.brand {
    font-weight: 600;
    color: var(--fg);
}
/* fallback(class) + current(id) 모두 지원 */
.nav-links,
#navLinks {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-left: auto;
}
.nav-links a,
#menuDynamic a {
    color: #374151;
    font-size: 1rem;
}
.nav-links a:hover,
#menuDynamic a:hover {
    color: #0f172a;
}
.menu {
    display: none;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 10px;
    padding: 6px 10px;
}

#menuDynamic {
    display: flex;
    align-items: center;
    gap: 28px;
    flex-wrap: wrap;
}
#menuDynamic a {
    display: inline-flex;
    align-items: center;
    padding: 6px 8px;
    border-radius: 6px;
    white-space: nowrap;
    text-decoration: none;
}

#navLinks .searchbar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 48px;
}
#navLinks .searchbar input {
    width: 220px;
}

@media (max-width: 960px) {
    .menu {
        display: block;
    }
    .nav-links,
    #navLinks {
        display: none;
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        position: absolute;
        right: 20px;
        top: 70px;
        min-width: 220px;
        background: #fff;
        border: 1px solid var(--line);
        border-radius: 12px;
        padding: 12px;
    }
    .nav-links.open,
    #navLinks.open {
        display: flex;
    }
    #menuDynamic {
        width: 100%;
        gap: 12px;
    }
    #navLinks .searchbar {
        width: 100%;
        margin-left: 0;
    }
    #navLinks .searchbar input {
        width: 100%;
    }
}

/* =========================
   Search
   ========================= */
.searchbar {
    display: flex;
    align-items: center;
    gap: 8px;
}
.searchbar input {
    border: 1px solid var(--line);
    padding: 0.55rem 0.8rem;
    border-radius: 999px;
    outline: none;
    min-width: 180px;
}
.searchbar input:focus {
    border-color: #cfd6dd;
    box-shadow: 0 0 0 4px rgba(207, 214, 221, 0.35);
}
.searchbar button {
    border: none;
    background: transparent;
    color: #6b7280;
    width: 38px;
    height: 38px;
    border-radius: 999px;
    display: grid;
    place-items: center;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
}
.searchbar button:hover {
    background: #f5f5f5;
    color: #111315;
}
.searchbar input:focus + button {
    background: #e5e7eb;
    color: #111315;
}

/* =========================
   HERO
   ========================= */
.hero {
    padding: 96px 0 56px;
    background: linear-gradient(180deg, #fff, #fafbfc);
    border-bottom: 1px solid var(--line);
}
.hero.compact {
    padding: 48px 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
}
.hero .hero-inner {
    max-width: 760px;
}
.display {
    font-size: 2.625rem;
    line-height: 1.15;
    margin: 0;
}
.lead {
    color: var(--muted);
    font-size: 1.125rem;
    margin: 6px 0 18px;
}
.btn {
    display: inline-block;
    background: #111315;
    color: #fff;
    padding: 0.6rem 0.8rem;
    border-radius: 14px;
}
.btn:hover {
    opacity: 0.9;
}

/* minimal variant for index */
.hero-minimal {
    padding: 64px 0 40px;
    background: #fff;
    border-bottom: 1px solid var(--line);
}
.hero-minimal .container {
    max-width: 920px;
}
.hero-title {
    font-size: clamp(28px, 4vw, 40px);
    line-height: 1.15;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: #111827;
    margin: 0 0 10px;
}
.hero-subtitle {
    font-size: 16px;
    color: #6b7280;
    margin: 0;
}
.hero-minimal + main {
    margin-top: 8px;
}

/* =========================
   GRID & CARD (Blog list)
   ========================= */
.grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
}
@media (max-width: 1024px) {
    .grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
}
@media (max-width: 640px) {
    .grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }
}

.card {
    border-radius: 14px;
    background: #fff;
    box-shadow: 0 4px 14px rgba(17, 24, 39, 0.06);
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 24px rgba(17, 24, 39, 0.1);
}
.card-body {
    padding: 18px;
}
.title {
    font-size: 1.125rem;
    margin: 0 0 6px;
}
.card .title a {
    color: #111315;
}
.card .title a:hover {
    color: #0f172a;
}
.meta {
    color: var(--muted);
    font-size: 0.875rem;
    margin: 0 0 10px;
}
.excerpt {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: #4b5563;
    line-height: 1.55;
    min-height: 48px;
}

/* =========================
   THUMBNAIL (contain) + overlay
   ========================= */
.thumb {
    display: block;
}
.ratio-16x9 {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
}
.thumb.ratio-16x9 {
    background-position: center;
    background-repeat: no-repeat;
    background-size: contain;
    background-color: #fff;
}
.thumb.overlay {
    position: relative;
    overflow: hidden;
}
.thumb.overlay::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.38), rgba(0, 0, 0, 0) 45%);
}
.overlay-text {
    /* position: absolute;
    left: 14px;
    right: 14px;
    bottom: 12px;
    color: #fff; */
    padding: 18px;
}
.overlay-title {
    font-weight: 600;
    font-size: 16px;
    line-height: 1.35;
}
.overlay-meta {
    opacity: 0.9;
    font-size: 12px;
    margin-top: 6px;
}
.card:hover .thumb.overlay {
    transform: translateY(-1px);
}
.card:hover .thumb.overlay::after {
    background: linear-gradient(180deg, rgba(17, 19, 21, 0) 0%, rgba(17, 19, 21, 0.82) 100%);
}
.card .thumb.overlay {
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}

/* =========================
   CONTENT (article)
   ========================= */
.content {
    max-width: 760px;
    margin: 48px auto;
    font-size: 1.0625rem;
}
.content .lead {
    font-weight: 500;
    font-size: 1.125rem;
}
.content h2 {
    font-size: 1.625rem;
    margin: 28px 0 12px;
}
.content p {
    line-height: 1.75;
}
blockquote {
    border-left: 3px solid var(--line);
    padding: 8px 14px;
    margin: 16px 0;
    background: #fafbfc;
    border-radius: 10px;
}
figure {
    margin: 20px 0;
}
figure img {
    border: 1px solid var(--line);
    border-radius: 12px;
}
figcaption {
    font-size: 0.75rem;
    margin-top: 6px;
    color: var(--muted);
}

/* =========================
   POST PAGE
   ========================= */
.post-hero {
    max-width: 820px;
}
.post-title {
    font-size: 2.5rem;
    line-height: 1.2;
    margin: 8px 0 10px;
}
@media (max-width: 640px) {
    .post-title {
        font-size: 2.125rem;
    }
}
.post-meta {
    display: flex;
    align-items: center;
    gap: 12px;
}
.post-meta-top {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
}
.tag {
    display: inline-block;
    background: #f5f7fa;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 0.75rem;
    color: #374151;
}
.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--line);
}
.author-name {
    font-weight: 600;
}

/* =========================
   TOC
   ========================= */
.toc {
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 14px 16px;
    background: #fff;
    margin: 20px 0;
}
.toc-title {
    font-weight: 600;
    margin-bottom: 6px;
}
.toc ol {
    margin: 0;
    padding-left: 18px;
}
.toc a {
    color: #374151;
}
.toc a:hover {
    color: #0f172a;
}

/* =========================
   Sharebar
   ========================= */
.sharebar {
    position: sticky;
    top: 100px;
    float: left;
    margin-left: -80px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.sharebar a {
    width: 38px;
    height: 38px;
    border: 1px solid var(--line);
    border-radius: 999px;
    display: grid;
    place-items: center;
    color: #111315;
    background: #fff;
}
@media (max-width: 1200px) {
    .sharebar {
        display: none;
    }
}

/* =========================
   Code block
   ========================= */
pre.code {
    background: #0b1220;
    color: #e6edf3;
    border-radius: 12px;
    padding: 14px 16px;
    overflow: auto;
    border: 1px solid #0f172a;
}
pre.code code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
    font-size: 0.8125rem;
}

/* =========================
   Table
   ========================= */
.tbl {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    border: 1px solid var(--line);
    border-radius: 12px;
    overflow: hidden;
}
.tbl th,
.tbl td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--line);
    vertical-align: middle;
    white-space: normal;
    word-break: break-word;
}
.tbl thead th {
    background: #fafbfc;
    text-align: left;
}
.tbl tbody tr:last-child td {
    border-bottom: none;
}

/* =========================
   CTA & Subscribe
   ========================= */
.cta-box {
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 18px;
    margin: 28px 0;
    background: #fff;
    box-shadow: var(--shadow);
}
.subscribe {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}
.subscribe input {
    flex: 1;
    border: 1px solid var(--line);
    padding: 0.6rem 0.8rem;
    border-radius: 12px;
}
.subscribe button {
    border: 0;
    background: #111315;
    color: #fff;
    padding: 0.65rem 1rem;
    border-radius: 12px;
}

/* =========================
   Author / separators / post nav / related
   ========================= */
.author-box {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}
.sep {
    border: 0;
    border-top: 1px solid var(--line);
    margin: 28px 0;
}
.post-nav {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin: 32px 0;
}
.post-nav a {
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 10px 12px;
    color: #111315;
    background: #fff;
}
.post-nav a:hover {
    background: #fafbfc;
}
.related {
    margin: 28px 0;
}
.related .h5 {
    font-size: 1.125rem;
    margin-bottom: 10px;
}

/* =========================
   FOOTER
   ========================= */
.footer {
    border-top: 1px solid var(--line);
    background: #fff;
}
.footer .container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 18px 20px;
}
.footer a {
    color: #6b7280;
    font-size: 1rem;
}
.footer a:hover {
    color: #111315;
}
.foot-info {
    width: 100%;
    font-size: 0.75rem;
    color: #9ca3af;
    line-height: 1.6;
    text-align: center;
    word-break: keep-all;
    margin-top: 6px;
    order: 3;
}

/* =========================
   Load More
   ========================= */
.loadmore-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin: 26px 0 10px;
}
.btn-outline {
    appearance: none;
    border: 1px solid var(--line);
    background: #fff;
    color: #111315;
    padding: 0.8rem 1.2rem;
    border-radius: 14px;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: background 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
}
.btn-outline:hover {
    background: #fafbfc;
}
.btn-outline:focus-visible {
    outline: 4px solid rgba(207, 214, 221, 0.35);
    outline-offset: 2px;
}
.btn-outline[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
}
.loadmore.is-loading {
    position: relative;
    color: #6b7280;
    pointer-events: none;
}
.loadmore.is-loading::after {
    content: '';
    position: absolute;
    inset: 0;
    margin: auto;
    width: 18px;
    height: 18px;
    border: 2px solid #cfd6dd;
    border-top-color: #6b7280;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}
.loadmore-end {
    font-size: 0.95rem;
    color: var(--muted);
}

/* =========================
   PRODUCT LANDING (lp-*)
   ========================= */
.lp-hero {
    position: relative;
    overflow: hidden;
    padding: 64px 0 32px;
    border-bottom: 1px solid var(--line);
}
.lp-hero::before {
    content: '';
    position: absolute;
    inset: -30% -20% auto -20%;
    height: 140%;
    background: radial-gradient(60% 60% at 50% 0%, rgba(15, 23, 42, 0.06), transparent 60%);
}
.lp-hero .hero-inner {
    position: relative;
    z-index: 1;
}
.lp-hero h1 {
    font-size: clamp(28px, 4.8vw, 48px);
    line-height: 1.12;
    margin: 0 0 10px;
}
.lp-hero p {
    color: var(--muted);
    max-width: 720px;
}
.lp-hero .lp-hero-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: 1fr;
    align-items: center;
}
@media (min-width: 992px) {
    .lp-hero .lp-hero-grid {
        grid-template-columns: 1.3fr 0.7fr;
    }
}
.lp-hero .lp-figure {
    border: 1px solid var(--line);
    border-radius: 18px;
    background: #fff;
    overflow: hidden;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
    display: flex;
    justify-content: center;
}
.lp-hero .lp-figure img {
    width: 100%;
    height: auto;
    display: block;
}
.lp-hero .lp-caption {
    padding: 10px 12px;
    border-top: 1px solid var(--line);
    font-size: 0.92rem;
    color: var(--muted);
}

.frame-sidebar {
    width: min(100%, 380px);
    margin: 0 auto;
    border: 1px solid var(--sl-line);
    border-radius: 18px;
    background: #fff;
    box-shadow: var(--sl-shadow);
    overflow: hidden;
}
.frame-title {
    height: 36px;
    background: linear-gradient(180deg, #f8fafc, #eef2f7);
    border-bottom: 1px solid var(--sl-line);
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 12px;
}
.frame-dots {
    display: flex;
    gap: 6px;
}
.frame-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #d1d5db;
}
.frame-viewport {
    display: block;
    width: 100%;
    height: auto;
    object-fit: contain;
    background: #f8fafc;
}
@media (min-width: 992px) {
    .lp-hero .frame-sidebar {
        width: 320px;
    }
    .lp-hero .frame-viewport {
        width: auto;
        max-height: clamp(460px, 60vh, 620px);
        margin: 0 auto;
    }
}

.lp-section {
    padding: 56px 0;
    border-bottom: 1px solid var(--line);
}
.lp-section h2 {
    margin: 0 0 14px;
    font-size: clamp(22px, 3.6vw, 34px);
}
.lp-section .sub {
    color: var(--muted);
    margin: 0 0 18px;
}
.lp-grid {
    display: grid;
    gap: 18px;
}
.cols-2 {
    grid-template-columns: 1fr;
}
.cols-3 {
    grid-template-columns: 1fr;
}
@media (min-width: 992px) {
    .cols-2 {
        grid-template-columns: 1.05fr 0.95fr;
    }
    .cols-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}
.lp-card {
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
    padding: 18px;
}
.lp-card h4 {
    margin: 6px 0 6px;
}

.lp-kpis {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 768px) {
    .lp-kpis {
        grid-template-columns: repeat(4, 1fr);
    }
}
.lp-kpi {
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #fff;
    padding: 14px 16px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}
.lp-kpi .num {
    font-weight: 800;
    font-size: 1.35rem;
}
.lp-note {
    color: var(--muted);
    font-size: 0.9rem;
}

.lp-steps {
    display: grid;
    gap: 12px;
    grid-template-columns: 1fr;
}
@media (min-width: 992px) {
    .lp-steps {
        grid-template-columns: repeat(4, 1fr);
    }
}
.lp-step {
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #fff;
    padding: 16px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}
.lp-step .idx {
    display: inline-flex;
    width: 28px;
    height: 28px;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--line);
    border-radius: 999px;
    margin-right: 8px;
}

#how .lp-grid.cols-3 {
    align-items: start;
}
#how .figure {
    display: flex;
    flex-direction: column;
    align-items: center;
}
#how .figure img,
#how .frame-sidebar,
#how .frame-viewport {
    width: auto !important;
    max-width: 100%;
    height: auto;
    max-height: 520px;
    object-fit: contain;
    margin: 0 auto;
}
@media (max-width: 991px) {
    #how .figure img,
    #how .frame-sidebar,
    #how .frame-viewport {
        max-height: 380px;
    }
}
.lp-grid.cols-2 {
    align-items: start;
}

/* =========================
   STATS / SRS (sl-*)
   ========================= */
.sl-grid {
    display: grid;
    gap: 16px;
}
.sl-grid.cols-2 {
    grid-template-columns: 1fr;
}
.sl-grid.cols-3 {
    grid-template-columns: 1fr;
}
@media (min-width: 992px) {
    .sl-grid.cols-2 {
        grid-template-columns: 1.15fr 0.85fr;
    }
    .sl-grid.cols-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}
.sl-figure {
    border: 1px solid var(--sl-line);
    border-radius: 16px;
    background: #fff;
    box-shadow: var(--sl-shadow);
    overflow: hidden;
}
.sl-figure img {
    width: 100%;
    height: auto;
    display: block;
}
.sl-caption {
    padding: 12px 14px;
    font-size: 0.92rem;
    color: var(--sl-muted);
    border-top: 1px solid var(--sl-line);
}
.sl-kpis {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 768px) {
    .sl-kpis {
        grid-template-columns: repeat(4, 1fr);
    }
}
.sl-kpi {
    padding: 16px;
    border: 1px solid var(--sl-line);
    border-radius: 12px;
    background: #fff;
    box-shadow: var(--sl-shadow);
}
.sl-kpi .num {
    font-weight: 800;
    font-size: 1.4rem;
}
.sl-bullets {
    display: grid;
    gap: 8px;
}
.sl-badge {
    display: inline-block;
    padding: 2px 8px;
    border: 1px solid var(--sl-line);
    border-radius: 999px;
    font-size: 0.8rem;
    color: #374151;
    background: #fff;
}
.sl-note {
    color: #6b7280;
    font-size: 0.9rem;
}

.sl-chiprow {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0.5rem 0 1rem;
}
.sl-chip {
    padding: 6px 10px;
    border: 1px solid var(--sl-line);
    border-radius: 999px;
    background: #fff;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.04);
    font-size: 0.9rem;
}
.sl-chip .idx {
    font-weight: 700;
    margin-right: 6px;
    color: #374151;
}
.sl-chip .tag {
    opacity: 0.75;
}

.sl-steps {
    display: grid;
    gap: 10px;
    margin: 14px 0;
}
@media (min-width: 768px) {
    .sl-steps {
        grid-template-columns: repeat(5, 1fr);
    }
}
.sl-step {
    border: 1px solid var(--sl-line);
    border-radius: 12px;
    background: #fff;
    padding: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
}
.sl-step .t {
    font-weight: 800;
    font-size: 0.95rem;
}
.sl-step .b {
    font-size: 0.9rem;
    color: #6b7280;
}
.sl-step .e {
    margin-top: 6px;
    font-size: 0.92rem;
}

/* =========================
   Screenshots (.ss)
   ========================= */
.ss {
    max-width: 420px;
    margin: 0 auto;
}
.ss figure {
    margin: 0;
}
.ss .frame {
    border: 1px solid var(--sl-line);
    border-radius: 18px;
    background: #fff;
    box-shadow: var(--sl-shadow);
    overflow: hidden;
}
.ss .bar {
    height: 36px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 12px;
    background: linear-gradient(180deg, #f8fafc, #eef2f7);
    border-bottom: 1px solid var(--sl-line);
}
.ss .dots {
    display: flex;
    gap: 6px;
}
.ss .dots i {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #d1d5db;
    display: block;
}
.ss img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: contain;
}
.ss .caption {
    padding: 10px 12px;
    font-size: 0.92rem;
    color: #6b7280;
    border-top: 1px solid var(--sl-line);
}
.ss.rounded .bar {
    display: none;
}
.ss.device .bar {
    display: flex;
}
.ss.edge .frame {
    border-color: transparent;
}
.ss.squared .frame {
    border-radius: 8px;
}
@media (max-width: 576px) {
    .ss {
        max-width: 100%;
    }
}

/* =========================
   SPEAKING
   ========================= */
#speaking .lp-grid.cols-2.pair-equal {
    align-items: stretch;
}
#speaking .lp-equal,
#speaking .lp-card,
#speaking .fc-card {
    height: var(--speaking-card-h);
    margin-top: 20px;
}

#speaking .sl-steps.equal {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 14px;
    margin-top: 12px;
}
#speaking .sl-step {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: var(--speaking-step-h);
    border: 1px solid #eaecef;
    border-radius: 14px;
    background: #fff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
    padding: 18px 16px;
}
#speaking .sl-step .t {
    font-weight: 800;
    font-size: 1.05rem;
    color: #111315;
}
#speaking .sl-step .b {
    font-size: 1rem;
    color: #6b7280;
    margin-top: 2px;
}
#speaking .sl-step .e {
    font-size: 1.125rem;
    line-height: 1.6;
    margin-top: 10px;
}

/* 플래시카드 */
.fc-wrap {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 16px;
}
#speaking .fc-card {
    width: min(820px, 100%);
    height: var(--speaking-card-h);
    perspective: 1200px;
    margin-top: -10px;
}
.fc-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.fc-card.is-flipped .fc-inner {
    transform: rotateY(180deg);
}
.fc-face {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    border: 1px solid #eaecef;
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}
.fc-front .kr {
    font-size: clamp(1.6rem, 2.6vw, 2.6rem);
    line-height: 1.35;
    font-weight: 600;
}
.fc-front .hint {
    position: absolute;
    bottom: 12px;
    left: 0;
    right: 0;
    color: #6b7280;
    font-size: 0.95rem;
}
.fc-back {
    transform: rotateY(180deg);
}
.fc-back img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    max-height: calc(var(--speaking-card-h) - 24px);
}

@media (max-width: 992px) {
    #speaking .sl-steps.equal {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 640px) {
    #speaking .sl-steps.equal {
        grid-template-columns: 1fr;
    }
    #speaking .fc-front .kr {
        font-size: clamp(1.35rem, 4.2vw, 1.9rem);
    }
}

/* 섹션 간 마진/패딩 안정화 */
.lp-section .container > :last-child {
    margin-bottom: 0;
}
#speaking.lp-section,
#why-speaking.lp-section {
    padding-bottom: 16px;
}
#speaking .container,
#why-speaking .container {
    display: flow-root;
}
#speaking ul:last-of-type,
#why-speaking ul:last-of-type {
    margin-bottom: 0;
}
.lp-section + .lp-section,
#speaking + *,
#why-speaking + * {
    margin-top: 0;
}

/* 카드 높이 제한(요청) */
#speaking .lp-card.core-principles {
    max-height: 120px;
    overflow: hidden;
    padding-bottom: 8px;
    margin-bottom: 8px;
}
#speaking .lp-card.why-fast {
    max-height: 160px;
    overflow: hidden;
    padding-bottom: 8px;
    margin-top: 8px;
    margin-bottom: 0;
}

/* =========================
   DASHBOARD (Notion white)
   ========================= */
.dash {
    display: grid;
    gap: 14px;
    margin-top: 14px;
}
.dash.grid-4 {
    grid-template-columns: 1fr;
}
.dash.grid-2 {
    grid-template-columns: 1fr;
}
@media (min-width: 992px) {
    .dash.grid-4 {
        grid-template-columns: repeat(4, 1fr);
    }
    .dash.grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
}
.dash-card {
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #fff;
    box-shadow: var(--sl-shadow);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.dash-card .card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}
.dash-card .card-head .muted {
    color: var(--sl-muted);
    font-size: 0.9rem;
}
.kpi-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.kpi-title {
    font-weight: 600;
}
.kpi-badge {
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 2px 8px;
    font-size: 0.8rem;
    color: #374151;
}
.kpi-main {
    display: flex;
    align-items: center;
    gap: 14px;
}
.kpi-num {
    font-weight: 800;
    font-size: 1.35rem;
}
.kpi-sub {
    color: var(--sl-muted);
    font-size: 0.9rem;
}
.donut {
    --size: 74px;
    width: var(--size);
    height: var(--size);
    border-radius: 50%;
    background: conic-gradient(var(--clr) calc(var(--val) * 1%), #eef2f7 0);
    display: grid;
    place-items: center;
    position: relative;
}
.donut::after {
    content: '';
    position: absolute;
    inset: 8px;
    background: #fff;
    border-radius: 50%;
    box-shadow: inset 0 0 0 1px var(--line);
}
.donut-cutout {
    position: relative;
    z-index: 1;
    font-weight: 700;
    font-size: 0.95rem;
}
.spark {
    width: 120px;
    height: 36px;
    color: #111315;
    background: linear-gradient(#fff, #fff) padding-box, linear-gradient(180deg, #f3f4f6, #eef2f7) border-box;
    border: 1px solid var(--line);
    border-radius: 10px;
    display: grid;
    place-items: center;
}
.bars {
    display: grid;
    gap: 8px;
    min-width: 220px;
}
.bar {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 8px;
    align-items: center;
}
.bar .label {
    color: #374151;
    font-size: 0.92rem;
}
.bar .track {
    height: 8px;
    background: #f1f5f9;
    border-radius: 999px;
    overflow: hidden;
}
.bar .track i {
    display: block;
    height: 100%;
    width: var(--w);
    background: #111315;
}
.bar .val {
    font-variant-numeric: tabular-nums;
    color: #374151;
    font-size: 0.92rem;
}
.skill {
    display: grid;
    gap: 10px;
}
.skill-row {
    display: grid;
    grid-template-columns: 140px 1fr auto;
    gap: 10px;
    align-items: center;
}
.skill-row span {
    color: #111315;
}
.skill-row .track {
    height: 10px;
    background: #f1f5f9;
    border-radius: 999px;
    overflow: hidden;
}
.skill-row .track i {
    display: block;
    height: 100%;
    width: var(--w);
    background: #111315;
}
.skill-row em {
    font-style: normal;
    color: #374151;
    font-variant-numeric: tabular-nums;
}
.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.chip {
    border: 1px solid var(--line);
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 0.9rem;
    background: #fff;
}
.chip.ok {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}
.chip.mid {
    opacity: 0.85;
}
.bullets {
    margin: 0;
    padding-left: 18px;
    display: grid;
    gap: 6px;
}
.bullets li {
    line-height: 1.6;
}

/* article tables inside content */
.post-content table,
#content table,
article table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}
.post-content th,
.post-content td,
article th,
article td {
    border: 1px solid rgba(0, 0, 0, 0.12);
    padding: 0.5rem 0.75rem;
    vertical-align: top;
}
.post-content thead th,
article thead th {
    background: #f8f9fa;
    font-weight: 600;
}
.table-striped tbody tr:nth-of-type(odd) {
    background: rgba(0, 0, 0, 0.02);
}
.table-sm th,
.table-sm td {
    padding: 0.35rem 0.5rem;
}
.table-responsive {
    display: block;
    width: 100%;
    overflow-x: auto;
}

/* ===== Clean Blog CSS ===== */
/* ===== Clean Blog CSS (최적화) ===== */

/* 기본 설정 */
#postContent {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.8;
    color: #333;
}

/* 제목 공통 */
#postContent h1,
#postContent h2,
#postContent h3 {
    font-weight: 600;
    line-height: 1.4;
}

#postContent h1 {
    font-size: 28px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 3px solid #2c5aa0;
}

#postContent h2 {
    font-size: 20px;
    color: #2c2c2c;
    margin: 35px 0 15px;
    padding-left: 12px;
    border-left: 4px solid #2c5aa0;
}

#postContent h3 {
    font-size: 17px;
    color: #3a3a3a;
    margin: 25px 0 12px;
}

/* 본문 & 리스트 */
#postContent p {
    margin-bottom: 18px;
    text-align: justify;
    word-break: keep-all;
}

#postContent ul,
#postContent ol {
    margin: 15px 0;
    padding-left: 25px;
}

#postContent li {
    margin-bottom: 10px;
    line-height: 1.7;
}

#postContent li:last-child {
    margin-bottom: 0;
}

/* 테이블 */
#postContent table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 15px;
}

#postContent th,
#postContent td {
    padding: 12px 15px;
    border: 1px solid #ddd;
    text-align: left;
    vertical-align: top;
}

#postContent th {
    background-color: #f5f7fa;
    font-weight: 600;
    color: #2c2c2c;
    width: 25%;
    white-space: nowrap;
}

#postContent tr:hover td {
    background-color: #fafbfc;
}

/* 박스 공통 스타일 */
#postContent .meta,
#postContent .highlight-box,
#postContent .quote,
#postContent .info-box {
    padding: 20px 25px;
    margin: 20px 0;
    border-radius: 5px;
}

/* 메타 정보 */
#postContent .meta {
    font-size: 14px;
    color: #666;
    margin-bottom: 30px;
    padding: 10px 15px;
    background-color: #f5f7fa;
    border-left: 3px solid #2c5aa0;
}

/* 하이라이트 박스 */
#postContent .highlight-box {
    background-color: #f8fafc;
    border: 1px solid #e2e8f0;
    border-left: 4px solid #2c5aa0;
}

#postContent .highlight-box strong {
    color: #2c5aa0;
}

#postContent .highlight-box ul {
    margin: 10px 0 0;
    padding-left: 20px;
}

#postContent .highlight-box li {
    margin-bottom: 8px;
    line-height: 1.6;
}

/* 인용구 */
#postContent .quote {
    background-color: #fafafa;
    border-left: 4px solid #4a90a4;
    color: #444;
    border-radius: 0 5px 5px 0;
}

#postContent .quote strong {
    display: block;
    margin-top: 15px;
    color: #2c5aa0;
    font-size: 14px;
}

/* 정보 박스 */
#postContent .info-box {
    background-color: #e8f4f8;
    border: 1px solid #b8d4e3;
    border-radius: 8px;
    text-align: center;
}

#postContent .info-box p {
    margin-bottom: 8px;
    text-align: center;
}

#postContent .info-box strong {
    color: #2c5aa0;
    font-size: 17px;
}

/* 박스 내 마지막 요소 마진 제거 */
#postContent .highlight-box p:last-child,
#postContent .highlight-box li:last-child,
#postContent .info-box p:last-child {
    margin-bottom: 0;
}

/* 구분선 */
#postContent hr.divider {
    border: none;
    height: 1px;
    background-color: #e5e5e5;
    margin: 35px 0;
}

/* 출처 & 푸터 공통 */
#postContent .source,
#postContent .footer {
    margin-top: 30px;
    padding-top: 20px;
    font-size: 13px;
}

#postContent .source {
    border-top: 1px solid #e5e5e5;
    color: #888;
}

#postContent .source p {
    margin-bottom: 5px;
    text-align: left;
}

#postContent .footer {
    border-top: 2px solid #2c5aa0;
    text-align: center;
    color: #666;
}

#postContent .footer p {
    margin-bottom: 0;
}

/* 강조 & 링크 */
#postContent strong {
    font-weight: 600;
    color: #2c2c2c;
}

#postContent a {
    color: #2c5aa0;
    text-decoration: none;
    transition: color 0.2s ease;
}

#postContent a:hover {
    color: #1e3d6f;
    text-decoration: underline;
}

/* 이미지 */
#postContent img {
    max-width: 100%;
    height: auto;
    border-radius: 5px;
    margin: 20px 0;
}

/* 반응형 */
@media (max-width: 768px) {
    #postContent {
        font-size: 15px;
    }
    #postContent h1 {
        font-size: 22px;
    }
    #postContent h2 {
        font-size: 18px;
    }
    #postContent th,
    #postContent td {
        padding: 10px 12px;
        font-size: 14px;
    }
    #postContent th {
        width: 30%;
    }
    #postContent .meta,
    #postContent .highlight-box,
    #postContent .quote,
    #postContent .info-box {
        padding: 15px 18px;
    }
    #postContent .meta {
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    #postContent {
        font-size: 14px;
    }
    #postContent h1 {
        font-size: 20px;
    }
    #postContent h2 {
        font-size: 17px;
        padding-left: 10px;
    }
    #postContent table {
        font-size: 13px;
    }
    #postContent th,
    #postContent td {
        padding: 8px 10px;
    }
    #postContent th {
        width: 35%;
    }
}

/* 인쇄 */
@media print {
    #postContent .highlight-box,
    #postContent .quote,
    #postContent .info-box,
    #postContent table {
        break-inside: avoid;
    }
}