/* ==========================================================================
   eSIM Troubleshooting Guide — site stylesheet
   Domain: globesim.world
   Plain CSS, no build step, no external dependencies.
   Colours, fonts and spacing are controlled by the custom properties below.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */
:root {
    --color-ink: #191c24;
    --color-ink-soft: #262a35;
    --color-accent: #c0563f;
    --color-accent-hover: #a34733;
    --color-accent-ink: #14161f;
    --color-bg: #f7f6f4;
    --color-surface: #ffffff;
    --color-text: #23232c;
    --color-muted: #68635d;
    --color-line: #e2e4e8;

    --font-display: Georgia, "Times New Roman", serif;
    --font-ui: "Segoe UI", Arial, sans-serif;

    --radius: 2px;
    --shadow-soft: 0 1px 2px rgba(16, 18, 27, 0.05), 0 12px 28px rgba(16, 18, 27, 0.05);
    --max-width: 1180px;
}

/* --------------------------------------------------------------------------
   2. Reset and base elements
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-ui);
    font-size: 16px;
    line-height: 1.7;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

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

h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.18;
    letter-spacing: -0.01em;
    margin: 0 0 0.6em;
}

p {
    margin: 0 0 1.1em;
}

ul, ol {
    margin: 0 0 1.2em;
    padding-left: 1.25em;
}

li {
    margin-bottom: 0.45em;
}

:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 99;
    background: var(--color-accent);
    color: var(--color-accent-ink);
    padding: 12px 20px;
}

.skip-link:focus {
    left: 12px;
    top: 12px;
}

.container {
    width: min(var(--max-width), 90vw);
    margin-inline: auto;
}

.eyebrow {
    display: inline-block;
    margin: 0 0 14px;
    font-family: var(--font-ui);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent);
}

.rule {
    border: 0;
    border-top: 1px solid var(--color-line);
    margin: 0;
}

/* --------------------------------------------------------------------------
   3. Hero banner variants
   -------------------------------------------------------------------------- */
.top-banner {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 580px;
    background-color: var(--color-ink);
    background-position: center;
    background-size: cover;
    color: #ffffff;
}

.top-banner::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(95deg,
        rgba(9, 11, 18, 0.94) 0%,
        rgba(9, 11, 18, 0.78) 42%,
        rgba(9, 11, 18, 0.28) 100%);
}

.top-banner-content {
    position: relative;
    z-index: 2;
    max-width: 660px;
    padding: 96px 0;
}

.top-banner h1 {
    font-size: clamp(2.3rem, 4.8vw, 3.7rem);
    margin-bottom: 0.35em;
}

.top-banner .headline {
    max-width: 46ch;
    color: rgba(255, 255, 255, 0.84);
    font-size: 1.02rem;
    margin-bottom: 0.35em;
}

.top-banner .cta-button {
    margin-top: 26px;
}

.cta-button {
    display: inline-block;
    background: var(--color-accent);
    color: var(--color-accent-ink);
    padding: 15px 28px;
    border: 0;
    border-radius: var(--radius);
    font-family: var(--font-ui);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    cursor: pointer;
}

.cta-button:hover,
.cta-button:focus {
    background: var(--color-accent-hover);
    color: var(--color-accent-ink);
}

.cta-link {
    display: inline-block;
    padding-bottom: 4px;
    border-bottom: 2px solid var(--color-accent);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-ink);
}

/* Hero: split layout — text panel on the left, photograph on the right */
.hero-split {
    display: grid;
    grid-template-columns: 1.02fr 0.98fr;
    background: var(--color-ink);
    color: #ffffff;
}

.hero-split-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 96px clamp(24px, 5vw, 84px);
}

.hero-split-text h1 {
    font-size: clamp(2.1rem, 3.9vw, 3.3rem);
    margin-bottom: 0.35em;
}

.hero-split-text .headline {
    max-width: 44ch;
    color: rgba(255, 255, 255, 0.82);
    margin-bottom: 0.4em;
}

.hero-split-text .cta-button {
    align-self: flex-start;
    margin-top: 28px;
}

.hero-split-media img {
    width: 100%;
    height: 100%;
    min-height: 560px;
    object-fit: cover;
}

/* Hero: band layout — headline above a wide photograph */
.hero-band {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-line);
}

.hero-band-head {
    padding: 84px 0 64px;
    max-width: 760px;
}

.hero-band-head h1 {
    font-size: clamp(2.2rem, 4.4vw, 3.5rem);
    color: var(--color-ink);
}

.hero-band-head .headline {
    color: var(--color-muted);
    max-width: 58ch;
}

.hero-band-head .cta-button {
    margin-top: 18px;
}

.hero-band-media img {
    width: 100%;
    height: 420px;
    object-fit: cover;
}

/* Hero: inset layout — framed photograph beside the text */
.hero-inset {
    padding: 72px 0 64px;
    background: var(--color-bg);
}

.hero-inset-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(28px, 5vw, 64px);
    align-items: center;
}

.hero-inset-media {
    position: relative;
    margin: 0;
}

.hero-inset-media img {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 440px;
    object-fit: cover;
    border-radius: var(--radius);
}

.hero-inset-media::after {
    content: "";
    position: absolute;
    inset: 18px -18px -18px 18px;
    border: 1px solid var(--color-accent);
    border-radius: var(--radius);
}

.hero-inset-text h1 {
    font-size: clamp(2rem, 3.6vw, 3rem);
    color: var(--color-ink);
}

.hero-inset-text .headline {
    color: var(--color-muted);
    margin-bottom: 0.4em;
    max-width: 46ch;
}

.hero-inset-text .cta-button {
    margin-top: 18px;
}

/* Hero: masthead layout — heavy rules, left aligned, photograph below */
.hero-masthead {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-line);
}

.hero-masthead-text {
    padding: 76px 0 44px;
    border-top: 6px solid var(--color-ink);
}

.hero-masthead h1 {
    font-size: clamp(2.2rem, 4.2vw, 3.4rem);
    color: var(--color-ink);
    max-width: 20ch;
}

.hero-masthead .rule-heavy {
    border: 0;
    border-top: 2px solid var(--color-ink);
    margin: 26px 0 22px;
    max-width: 320px;
}

.hero-masthead .headline {
    color: var(--color-muted);
    max-width: 56ch;
    margin-bottom: 0.3em;
}

.hero-masthead .cta-button {
    margin-top: 20px;
}

.hero-masthead-media img {
    width: 100%;
    height: 460px;
    object-fit: cover;
}

/* Hero: frame layout — photograph with a framed editorial card on top */
.hero-frame {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 620px;
    background-color: var(--color-ink);
    background-position: center;
    background-size: cover;
    color: #ffffff;
    padding: 72px 0;
}

.hero-frame::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(9, 11, 18, 0.35), rgba(9, 11, 18, 0.72));
}

.hero-frame-card {
    position: relative;
    z-index: 2;
    max-width: 620px;
    margin-left: auto;
    padding: 48px clamp(24px, 4vw, 56px);
    background: rgba(14, 16, 24, 0.82);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-top: 4px solid var(--color-accent);
    backdrop-filter: blur(3px);
}

.hero-frame-card h1 {
    font-size: clamp(2rem, 3.6vw, 3rem);
}

.hero-frame-card .headline {
    color: rgba(255, 255, 255, 0.82);
    margin-bottom: 0.35em;
}

.hero-frame-card .cta-button {
    margin-top: 20px;
}

/* Hero: dark panel layout — solid panel beside a bleeding photograph */
.hero-panel {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    background: var(--color-surface);
}

.hero-panel-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 92px clamp(24px, 5vw, 76px);
    background: var(--color-ink);
    color: #ffffff;
    border-left: 6px solid var(--color-accent);
}

.hero-panel-text h1 {
    font-size: clamp(2.1rem, 3.8vw, 3.2rem);
}

.hero-panel-text .headline {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.4em;
}

.hero-panel-text .cta-button {
    align-self: flex-start;
    margin-top: 26px;
}

.hero-panel-media img {
    width: 100%;
    height: 100%;
    min-height: 560px;
    object-fit: cover;
}

/* Hero: meta band layout — headline left, guide index right, image below */
.hero-meta {
    background: var(--color-surface);
    border-bottom: 4px solid var(--color-ink);
}

.hero-meta-grid {
    display: grid;
    grid-template-columns: 1.35fr 0.65fr;
    gap: clamp(28px, 4vw, 60px);
    padding: 80px 0 56px;
    align-items: end;
}

.hero-meta h1 {
    font-size: clamp(2.2rem, 4.2vw, 3.4rem);
    color: var(--color-ink);
    margin-bottom: 0.3em;
}

.hero-meta .headline {
    color: var(--color-muted);
    max-width: 52ch;
    margin-bottom: 0.35em;
}

.hero-meta .cta-button {
    margin-top: 20px;
}

.hero-meta-index {
    border-top: 2px solid var(--color-ink);
    padding-top: 16px;
}

.hero-meta-index p {
    margin: 0 0 10px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.hero-meta-index ol {
    margin: 0;
    padding-left: 1.1em;
    font-size: 0.92rem;
}

.hero-meta-media img {
    width: 100%;
    height: 380px;
    object-fit: cover;
}

/* Hero: overlay with a floating preparation card */
.hero-checklist {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 620px;
    background-color: var(--color-ink);
    background-position: center;
    background-size: cover;
    color: #ffffff;
    padding: 72px 0;
}

.hero-checklist::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg,
        rgba(9, 11, 18, 0.93) 0%,
        rgba(9, 11, 18, 0.74) 46%,
        rgba(9, 11, 18, 0.3) 100%);
}

.hero-checklist-grid {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: clamp(28px, 4vw, 56px);
    align-items: center;
}

.hero-checklist h1 {
    font-size: clamp(2.1rem, 3.9vw, 3.3rem);
}

.hero-checklist .headline {
    color: rgba(255, 255, 255, 0.82);
    max-width: 42ch;
    margin-bottom: 0.35em;
}

.hero-checklist .cta-button {
    margin-top: 22px;
}

.preparation-card {
    background: var(--color-surface);
    color: var(--color-text);
    padding: 30px 32px;
    border-radius: var(--radius);
    border-top: 4px solid var(--color-accent);
    box-shadow: 0 18px 40px rgba(8, 10, 16, 0.28);
}

.preparation-card h2 {
    font-family: var(--font-ui);
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: 14px;
}

.preparation-card ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.preparation-card li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 10px;
    font-size: 0.94rem;
    line-height: 1.5;
}

.preparation-card li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    width: 10px;
    height: 10px;
    border: 2px solid var(--color-accent);
    border-radius: 50%;
}

/* --------------------------------------------------------------------------
   4. Information bar and header
   -------------------------------------------------------------------------- */
.info-bar {
    background: var(--color-ink-soft);
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.78rem;
    letter-spacing: 0.04em;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.info-bar .container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 24px;
    justify-content: space-between;
    padding: 11px 0;
}

.info-bar strong {
    color: var(--color-accent);
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-size: 0.72rem;
}

.site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-line);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 22px 0;
}

.masthead {
    min-width: 0;
}

.masthead-title {
    display: block;
    font-family: var(--font-display);
    font-size: 1.42rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.15;
    color: var(--color-ink);
}

.masthead-subtitle {
    display: block;
    margin-top: 4px;
    font-size: 0.78rem;
    letter-spacing: 0.06em;
    color: var(--color-muted);
}

.primary-nav ul {
    display: flex;
    align-items: center;
    gap: 26px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.primary-nav li {
    margin: 0;
}

.primary-nav a {
    display: inline-block;
    padding: 6px 0;
    border-bottom: 2px solid transparent;
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.13em;
    text-transform: uppercase;
    color: var(--color-ink);
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
    color: var(--color-accent-hover);
    border-bottom-color: var(--color-accent);
}

.nav-toggle {
    display: none;
    padding: 9px 14px;
    background: transparent;
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    font-family: var(--font-ui);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-ink);
    cursor: pointer;
}

/* Header variants */
.header--centered .container {
    flex-direction: column;
    gap: 16px;
    text-align: center;
}

.header--centered .primary-nav ul {
    justify-content: center;
}

.header--dark {
    background: var(--color-ink);
    border-bottom: 3px solid var(--color-accent);
}

.header--dark .masthead-title,
.header--dark .primary-nav a {
    color: #ffffff;
}

.header--dark .masthead-subtitle {
    color: rgba(255, 255, 255, 0.62);
}

.header--dark .primary-nav a:hover,
.header--dark .primary-nav a[aria-current="page"] {
    color: var(--color-accent);
}

.header--dark .nav-toggle {
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.4);
}

/* --------------------------------------------------------------------------
   5. Feature strip
   -------------------------------------------------------------------------- */
.feature-strip {
    background: var(--color-ink-soft);
    color: #ffffff;
}

.feature-strip .container {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 20px 32px;
    padding: 26px 0;
}

.feature-strip .strip-label {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-accent);
    border-right: 1px solid rgba(255, 255, 255, 0.16);
    padding-right: 28px;
}

.feature-strip p {
    margin: 0;
    font-size: 1rem;
    font-family: var(--font-display);
}

.feature-strip a {
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #ffffff;
    border-bottom: 2px solid var(--color-accent);
    padding-bottom: 3px;
    white-space: nowrap;
}

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

/* --------------------------------------------------------------------------
   6. Section scaffolding
   -------------------------------------------------------------------------- */
.section {
    padding: 72px 0;
}

.section--tight {
    padding: 52px 0;
}

.section--surface {
    background: var(--color-surface);
    border-block: 1px solid var(--color-line);
}

.section-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 24px;
    border-top: 3px solid var(--color-ink);
    padding-top: 18px;
    margin-bottom: 34px;
}

.section-head h2 {
    font-size: clamp(1.5rem, 2.4vw, 2rem);
    margin: 0;
    color: var(--color-ink);
}

.section-head p {
    margin: 0;
    font-size: 0.82rem;
    letter-spacing: 0.04em;
    color: var(--color-muted);
}

/* --------------------------------------------------------------------------
   7. Lead editorial section
   -------------------------------------------------------------------------- */
.lead-grid {
    display: grid;
    grid-template-columns: 1.32fr 1fr;
    gap: 36px;
    align-items: start;
}

.lead-main {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    overflow: hidden;
}

.lead-main img {
    width: 100%;
    height: 320px;
    object-fit: cover;
}

.lead-main-body {
    padding: 30px 34px 34px;
}

.lead-main h3 {
    font-size: clamp(1.5rem, 2.3vw, 1.9rem);
    margin-bottom: 0.5em;
    color: var(--color-ink);
}

.lead-main p {
    color: var(--color-muted);
}

.lead-side {
    display: grid;
    gap: 22px;
}

.lead-card {
    display: grid;
    grid-template-columns: 104px 1fr;
    gap: 18px;
    align-items: start;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--color-line);
}

.lead-card:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.lead-card-thumb {
    height: 96px;
    border-radius: var(--radius);
    background-color: var(--color-ink);
    background-size: cover;
    background-position: center;
}

.lead-card h3 {
    font-size: 1.06rem;
    margin-bottom: 6px;
    color: var(--color-ink);
}

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

.card-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.card-meta .category {
    color: var(--color-accent-hover);
}

.card-meta .reading-time {
    color: var(--color-muted);
    letter-spacing: 0.08em;
    font-weight: 400;
}

.card-meta .reading-time::before {
    content: "·";
    margin-right: 10px;
    color: var(--color-line);
}

/* --------------------------------------------------------------------------
   8. Two-column content area
   -------------------------------------------------------------------------- */
.content-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: clamp(32px, 4vw, 54px);
    align-items: start;
}

.content-main > article {
    padding: 30px 0;
    border-top: 1px solid var(--color-line);
}

.content-main > article:first-of-type {
    border-top: 0;
    padding-top: 0;
}

.guide-block h3 {
    font-size: clamp(1.35rem, 2.1vw, 1.7rem);
    color: var(--color-ink);
    margin-bottom: 0.5em;
    max-width: 30ch;
}

.guide-block p {
    color: #3a3a45;
}

.guide-block .guide-figure {
    margin: 22px 0 0;
}

.guide-block .guide-figure figcaption {
    margin-top: 8px;
    font-size: 0.78rem;
    color: var(--color-muted);
}

.guide-block ol,
.guide-block ul {
    background: var(--color-surface);
    border-left: 3px solid var(--color-accent);
    padding: 18px 22px 18px 40px;
    border-radius: var(--radius);
}

.guide-block li {
    font-size: 0.95rem;
}

.note {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-left: 4px solid var(--color-accent);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin: 26px 0;
    font-size: 0.93rem;
    color: #3a3a45;
}

.note strong {
    display: block;
    margin-bottom: 6px;
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-accent-hover);
}

/* Sidebar */
.sidebar {
    position: sticky;
    top: 24px;
    display: grid;
    gap: 24px;
}

.sidebar-panel {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    padding: 24px 26px;
}

.sidebar-panel h2 {
    font-family: var(--font-ui);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-muted);
    padding-bottom: 12px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--color-line);
}

.sidebar-list {
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: sidebar-counter;
}

.sidebar-list li {
    position: relative;
    margin-bottom: 14px;
    padding-left: 30px;
    font-size: 0.93rem;
    line-height: 1.5;
}

.sidebar-list li::before {
    counter-increment: sidebar-counter;
    content: counter(sidebar-counter, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 1px;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--color-accent-hover);
    letter-spacing: 0.04em;
}

.sidebar-panel--dark {
    background: var(--color-ink);
    border-color: var(--color-ink);
    color: #ffffff;
}

.sidebar-panel--dark h2 {
    color: rgba(255, 255, 255, 0.6);
    border-bottom-color: rgba(255, 255, 255, 0.16);
}

.sidebar-panel--dark .sidebar-list li::before {
    color: var(--color-accent);
}

.checklist {
    margin: 0;
    padding: 0;
    list-style: none;
}

.checklist li {
    position: relative;
    padding-left: 26px;
    margin-bottom: 10px;
    font-size: 0.92rem;
    line-height: 1.5;
}

.checklist li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 7px;
    width: 11px;
    height: 6px;
    border-left: 2px solid var(--color-accent);
    border-bottom: 2px solid var(--color-accent);
    transform: rotate(-45deg);
}

/* --------------------------------------------------------------------------
   9. Article list, topic cards, FAQ
   -------------------------------------------------------------------------- */
.article-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.article-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 26px 28px;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    transition: border-color 0.18s ease, transform 0.18s ease;
}

.article-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.article-card h3 {
    font-size: 1.14rem;
    margin-bottom: 8px;
    color: var(--color-ink);
}

.article-card p {
    margin: 0 0 16px;
    font-size: 0.92rem;
    color: var(--color-muted);
}

.article-card .card-footer {
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid var(--color-line);
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--color-ink);
}

.article-card .card-footer span {
    color: var(--color-muted);
    font-weight: 400;
    letter-spacing: 0.06em;
}

.topic-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.topic-card {
    height: 100%;
    padding: 28px 24px;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-top: 3px solid var(--color-ink);
    border-radius: var(--radius);
}

.topic-card .topic-index {
    display: block;
    margin-bottom: 14px;
    font-family: var(--font-display);
    font-size: 1.6rem;
    color: var(--color-accent);
    line-height: 1;
}

.topic-card h3 {
    font-size: 1.02rem;
    margin-bottom: 8px;
    color: var(--color-ink);
}

.topic-card p {
    margin: 0;
    font-size: 0.88rem;
    color: var(--color-muted);
}

.faq-list {
    border-top: 1px solid var(--color-line);
}

.faq-item {
    border-bottom: 1px solid var(--color-line);
    padding: 6px 0;
}

.faq-item summary {
    cursor: pointer;
    padding: 18px 40px 18px 0;
    position: relative;
    font-family: var(--font-display);
    font-size: 1.04rem;
    font-weight: 700;
    color: var(--color-ink);
    list-style: none;
}

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

.faq-item summary::after {
    content: "+";
    position: absolute;
    right: 6px;
    top: 14px;
    font-family: var(--font-ui);
    font-size: 1.35rem;
    font-weight: 400;
    color: var(--color-accent);
}

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

.faq-item .faq-answer {
    padding: 0 40px 20px 0;
    color: #3a3a45;
    font-size: 0.95rem;
}

.faq-item .faq-answer p:last-child {
    margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   10. Page shell for secondary pages
   -------------------------------------------------------------------------- */
.page-hero {
    background: var(--color-ink);
    color: #ffffff;
    padding: 64px 0 56px;
    border-bottom: 4px solid var(--color-accent);
}

.page-hero .eyebrow {
    color: var(--color-accent);
}

.page-hero h1 {
    font-size: clamp(1.9rem, 3.4vw, 2.9rem);
    margin-bottom: 0.3em;
    max-width: 24ch;
}

.page-hero p {
    margin: 0;
    max-width: 62ch;
    color: rgba(255, 255, 255, 0.78);
}

.page-body {
    padding: 56px 0 76px;
}

.breadcrumb {
    font-size: 0.78rem;
    letter-spacing: 0.04em;
    color: var(--color-muted);
    margin-bottom: 26px;
}

.breadcrumb a {
    color: var(--color-ink);
    border-bottom: 1px solid var(--color-line);
}

.prose {
    max-width: 780px;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    padding: clamp(28px, 4vw, 56px);
}

.prose h2 {
    font-size: clamp(1.28rem, 2vw, 1.55rem);
    margin-top: 1.9em;
    padding-top: 0.2em;
    color: var(--color-ink);
}

.prose h2:first-child {
    margin-top: 0;
}

.prose h3 {
    font-size: 1.06rem;
    font-family: var(--font-ui);
    margin-top: 1.6em;
    color: var(--color-ink);
}

.prose p,
.prose li {
    color: #3a3a45;
}

.prose a {
    color: var(--color-accent-hover);
    border-bottom: 1px solid rgba(0, 0, 0, 0.18);
}

.prose ul,
.prose ol {
    padding-left: 1.3em;
}

.prose .notice {
    background: var(--color-bg);
    border: 1px dashed var(--color-line);
    border-left: 4px solid var(--color-accent);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin: 26px 0;
    font-size: 0.93rem;
}

.prose .notice strong {
    display: block;
    margin-bottom: 6px;
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-accent-hover);
}

.placeholder {
    display: inline-block;
    padding: 1px 6px;
    border: 1px dashed var(--color-accent);
    background: rgba(201, 162, 39, 0.08);
    font-family: Consolas, Monaco, monospace;
    font-size: 0.85em;
    color: #6b5310;
}

.page-narrow {
    max-width: 820px;
    margin-inline: auto;
}

.page-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 18px;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--color-line);
    font-size: 0.82rem;
}

.page-nav a {
    color: var(--color-ink);
    border-bottom: 1px solid var(--color-line);
}

/* --------------------------------------------------------------------------
   11. Footer
   -------------------------------------------------------------------------- */
.site-footer {
    background: var(--color-ink);
    color: rgba(255, 255, 255, 0.72);
    padding: 56px 0 24px;
    border-top: 4px solid var(--color-accent);
    font-size: 0.92rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 36px;
    padding-bottom: 36px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-brand .footer-title {
    display: block;
    font-family: var(--font-display);
    font-size: 1.16rem;
    color: #ffffff;
    margin-bottom: 12px;
}

.footer-brand p {
    margin: 0;
    max-width: 44ch;
    font-size: 0.88rem;
    line-height: 1.6;
}

.footer-col h2 {
    font-family: var(--font-ui);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 14px;
}

.footer-col ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.footer-col li {
    margin-bottom: 8px;
}

.footer-col a {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.78);
}

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

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px 24px;
    padding-top: 22px;
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.55);
    letter-spacing: 0.02em;
}

/* --------------------------------------------------------------------------
   12. Responsive behaviour
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .content-grid {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
    }

    .topic-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .hero-meta-grid {
        grid-template-columns: 1fr;
        align-items: start;
    }
}

@media (max-width: 768px) {
    body {
        font-size: 15.5px;
    }

    .container {
        width: min(var(--max-width), 92vw);
    }

    .top-banner,
    .hero-frame,
    .hero-checklist {
        min-height: 0;
        padding: 64px 0;
    }

    .top-banner-content {
        padding: 40px 0;
    }

    .top-banner::after {
        background: linear-gradient(180deg, rgba(9, 11, 18, 0.9), rgba(9, 11, 18, 0.86));
    }

    .hero-split,
    .hero-panel,
    .hero-inset-grid,
    .hero-checklist-grid {
        grid-template-columns: 1fr;
    }

    .hero-split-media img,
    .hero-panel-media img {
        min-height: 280px;
        height: 280px;
    }

    .hero-split-text,
    .hero-panel-text {
        padding: 56px 24px;
    }

    .hero-inset {
        padding: 48px 0 40px;
    }

    .hero-inset-media img {
        height: 280px;
    }

    .hero-inset-media::after {
        inset: 12px -12px -12px 12px;
    }

    .hero-band-media img,
    .hero-masthead-media img,
    .hero-meta-media img {
        height: 240px;
    }

    .hero-band-head,
    .hero-masthead-text,
    .hero-meta-grid {
        padding: 52px 0 36px;
    }

    .hero-frame-card {
        padding: 30px 24px;
    }

    .hero-checklist {
        padding: 48px 0;
    }

    .preparation-card {
        padding: 24px;
    }

    .site-header .container {
        flex-wrap: wrap;
        gap: 14px;
        padding: 16px 0;
    }

    .nav-toggle {
        display: inline-block;
    }

    .primary-nav {
        width: 100%;
        display: none;
    }

    .primary-nav.is-open {
        display: block;
        border-top: 1px solid var(--color-line);
        padding-top: 8px;
    }

    .primary-nav ul {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .primary-nav a {
        display: block;
        padding: 12px 2px;
        border-bottom: 1px solid var(--color-line);
    }

    .feature-strip .container {
        grid-template-columns: 1fr;
        gap: 10px;
        padding: 22px 0;
    }

    .feature-strip .strip-label {
        border-right: 0;
        padding-right: 0;
    }

    .section {
        padding: 48px 0;
    }

    .section-head {
        flex-direction: column;
        gap: 6px;
    }

    .lead-grid,
    .article-list {
        grid-template-columns: 1fr;
    }

    .lead-main img {
        height: 220px;
    }

    .lead-main-body {
        padding: 24px;
    }

    .lead-card {
        grid-template-columns: 78px 1fr;
    }

    .lead-card-thumb {
        height: 78px;
    }

    .topic-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 26px;
    }

    .page-hero {
        padding: 44px 0 38px;
    }

    .prose {
        padding: 24px 20px;
    }

    .article-card {
        padding: 22px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .article-card {
        transition: none;
    }
}


/* Editorial variant: compact rhythm */
.section {
    padding: 58px 0;
}
.lead-main img {
    height: 280px;
}
.section-head {
    margin-bottom: 26px;
}