:root {
    --guide-ink: #0b1830;
    --guide-muted: #627089;
    --guide-line: #dce7f4;
    --guide-blue: #2478ea;
    --guide-cyan: #13bfb4;
    --guide-violet: #7357e8;
    --guide-orange: #ff6b35;
    --guide-yellow: #ffca3a;
}

.page-guide .topbar {
    position: sticky;
    top: 0;
    z-index: 50;
}

.guide-manual {
    width: min(1240px, calc(100% - 32px));
    margin: 28px auto 70px;
    color: var(--guide-ink);
}

.guide-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(320px, .75fr);
    gap: 30px;
    align-items: center;
    padding: clamp(30px, 5vw, 72px);
    overflow: hidden;
    border: 1px solid rgba(44, 111, 220, .18);
    border-radius: 34px;
    background:
        radial-gradient(circle at 92% 12%, rgba(255, 202, 58, .38), transparent 28%),
        radial-gradient(circle at 10% 100%, rgba(19, 191, 180, .2), transparent 38%),
        linear-gradient(135deg, #f8fbff 0%, #eff4ff 52%, #fff8ec 100%);
    box-shadow: 0 30px 80px rgba(32, 73, 133, .14);
}

.guide-hero h1 {
    max-width: 760px;
    margin: 4px 0 14px;
    font-size: clamp(2.35rem, 5vw, 4.9rem);
    line-height: .96;
    letter-spacing: -.045em;
}

.guide-hero-copy > p:not(.eyebrow) {
    max-width: 720px;
    color: var(--guide-muted);
    font-size: clamp(1rem, 1.6vw, 1.22rem);
    line-height: 1.75;
}

.guide-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
}

.guide-hero-visual {
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: 10px 14px;
    align-items: center;
    padding: 24px;
    border: 1px solid rgba(255, 255, 255, .8);
    border-radius: 26px;
    background: rgba(255, 255, 255, .7);
    box-shadow: 0 20px 48px rgba(48, 78, 125, .12);
}

.guide-hero-visual span {
    display: grid;
    width: 54px;
    height: 54px;
    place-items: center;
    border-radius: 18px;
    color: white;
    font-size: 1.25rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--guide-blue), var(--guide-cyan));
}

.guide-hero-visual b { font-size: 1.1rem; }
.guide-hero-visual i {
    grid-column: 1 / -1;
    margin-left: 17px;
    color: #93a4bb;
    font-style: normal;
}

.guide-toc {
    position: sticky;
    top: 86px;
    z-index: 40;
    display: flex;
    gap: 8px;
    margin: 22px 0;
    padding: 10px;
    overflow-x: auto;
    border: 1px solid var(--guide-line);
    border-radius: 18px;
    background: rgba(255, 255, 255, .94);
    box-shadow: 0 12px 35px rgba(27, 60, 107, .1);
    backdrop-filter: blur(14px);
}

.guide-toc a {
    display: inline-flex;
    flex: 0 0 auto;
    gap: 8px;
    align-items: center;
    min-height: 44px;
    padding: 8px 14px;
    border-radius: 12px;
    color: #34425a;
    text-decoration: none;
    font-weight: 650;
}

.guide-toc a:hover,
.guide-toc a:focus-visible {
    color: var(--guide-blue);
    background: #edf5ff;
    outline: 3px solid rgba(36, 120, 234, .2);
}

.guide-toc b { color: var(--guide-blue); }

.guide-section {
    scroll-margin-top: 155px;
    margin-top: 24px;
    padding: clamp(24px, 4vw, 52px);
    border: 1px solid var(--guide-line);
    border-radius: 30px;
    background: #fff;
    box-shadow: 0 22px 62px rgba(26, 61, 111, .09);
}

.guide-heading {
    display: grid;
    grid-template-columns: 70px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
    margin-bottom: 28px;
}

.guide-heading > span {
    display: grid;
    width: 66px;
    height: 66px;
    place-items: center;
    border-radius: 21px;
    color: #fff;
    font-size: 1.35rem;
    font-weight: 850;
    background: linear-gradient(135deg, var(--guide-blue), var(--guide-violet));
    box-shadow: 0 14px 28px rgba(60, 95, 215, .22);
}

.guide-heading h2 {
    margin: 2px 0 8px;
    font-size: clamp(1.75rem, 3vw, 2.8rem);
    line-height: 1.1;
}

.guide-heading p:last-child {
    max-width: 850px;
    margin: 0;
    color: var(--guide-muted);
    line-height: 1.7;
}

.guide-steps {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 12px;
}

.guide-steps article,
.source-guide-grid article,
.upload-guide-grid article {
    position: relative;
    padding: 22px;
    overflow: hidden;
    border: 1px solid var(--guide-line);
    border-radius: 22px;
    background: #f8fbff;
}

.guide-steps article b {
    display: grid;
    width: 40px;
    height: 40px;
    place-items: center;
    margin-bottom: 18px;
    border-radius: 14px;
    color: #fff;
    background: var(--guide-blue);
}

.guide-steps article:nth-child(2) b { background: var(--guide-violet); }
.guide-steps article:nth-child(3) b { background: var(--guide-orange); }
.guide-steps article:nth-child(4) b { background: var(--guide-cyan); }
.guide-steps article:nth-child(5) b { color: #382700; background: var(--guide-yellow); }

.guide-steps h3,
.source-guide-grid h3,
.upload-guide-grid h3 {
    margin: 0 0 8px;
    font-size: 1.1rem;
}

.guide-steps p,
.source-guide-grid p,
.upload-guide-grid p {
    margin: 0;
    color: var(--guide-muted);
    line-height: 1.65;
}

.guide-shot {
    margin: 28px 0 0;
    overflow: hidden;
    border: 1px solid #cbd9ea;
    border-radius: 24px;
    background: #eaf1fa;
}

.guide-shot img {
    display: block;
    width: 100%;
    height: auto;
    max-height: 720px;
    object-fit: cover;
}

.guide-shot figcaption {
    padding: 14px 18px;
    color: #516079;
    background: #f8fbff;
    line-height: 1.55;
}

.source-guide-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.source-guide-grid article {
    min-height: 250px;
    background: linear-gradient(155deg, #fff, #f4f8ff);
}

.source-guide-grid article > span,
.platform-mark {
    display: grid;
    width: 52px;
    height: 52px;
    place-items: center;
    margin-bottom: 22px;
    border-radius: 17px;
    color: #fff;
    font-size: 1.15rem;
    font-weight: 850;
}

.source-guide-grid strong {
    display: block;
    margin-top: 18px;
    color: var(--guide-blue);
}

.source-tiktok > span { background: linear-gradient(135deg, #111827, #334155); }
.source-shopee > span { background: linear-gradient(135deg, #ff7b32, #f14134); }
.source-csv > span { background: linear-gradient(135deg, var(--guide-blue), var(--guide-cyan)); }

.guide-warning {
    margin-top: 18px;
    padding: 18px 20px;
    border: 1px solid #ffd77c;
    border-radius: 18px;
    color: #694700;
    background: #fff8df;
    line-height: 1.65;
}

.guide-source-flows {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-top: 22px;
}

.guide-source-flow {
    padding: 22px;
    border: 1px solid #dbe6f3;
    border-radius: 22px;
    background: #fff;
    box-shadow: 0 16px 40px rgba(15, 23, 42, .06);
}

.guide-source-flow.source-tiktok {
    border-top: 5px solid #334155;
    background: linear-gradient(155deg, #fff, #f8fafc);
}

.guide-source-flow.source-shopee {
    border-top: 5px solid #f4512c;
    background: linear-gradient(155deg, #fff, #fff7ed);
}

.guide-source-flow h3 {
    margin: 4px 0 16px;
    font-size: 1.35rem;
}

.guide-source-flow ol {
    display: grid;
    gap: 12px;
    margin: 0;
    padding-left: 22px;
}

.guide-source-flow li {
    padding-left: 4px;
    color: #0f172a;
}

.guide-source-flow li span {
    display: block;
    margin-top: 3px;
    color: #64748b;
    line-height: 1.55;
}

.guide-danger {
    margin-top: 16px;
    padding: 13px 15px;
    border: 1px solid #fecaca;
    border-radius: 14px;
    color: #9f1239;
    background: #fff1f2;
    line-height: 1.55;
}

.guide-inline-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    margin-top: 18px;
    padding: 10px 15px;
    border-radius: 13px;
    color: #fff;
    background: linear-gradient(135deg, #f4512c, #ff7b32);
    font-weight: 800;
    text-decoration: none;
}

.guide-inline-link:hover,
.guide-inline-link:focus-visible {
    filter: brightness(1.05);
    transform: translateY(-1px);
}

.guide-shot-affiliate {
    margin-top: 22px;
}

.guide-number-list {
    display: grid;
    gap: 12px;
    margin-top: 24px;
}

.guide-number-list article {
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 16px;
    align-items: start;
    padding: 18px 20px;
    border: 1px solid var(--guide-line);
    border-radius: 18px;
    background: #fbfdff;
}

.guide-number-list article > b {
    display: grid;
    width: 46px;
    height: 46px;
    place-items: center;
    border-radius: 15px;
    color: var(--guide-blue);
    background: #eaf3ff;
}

.guide-number-list h3 { margin: 1px 0 4px; }
.guide-number-list p { margin: 0; color: var(--guide-muted); line-height: 1.65; }

.guide-settings,
.posting-time-card {
    margin-top: 24px;
    padding: 26px;
    border-radius: 24px;
    color: #fff;
    background: linear-gradient(135deg, #101b35, #19375d);
}

.guide-settings h3 { margin-top: 0; }
.guide-settings dl,
.posting-time-card dl {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin: 0;
}

.guide-settings dl div,
.posting-time-card dl div {
    padding: 16px;
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: 15px;
    background: rgba(255, 255, 255, .07);
}

.guide-settings dt,
.posting-time-card dt { color: #80e8df; font-weight: 750; }
.guide-settings dd,
.posting-time-card dd { margin: 4px 0 0; color: #fff; line-height: 1.55; }

.upload-guide-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.upload-guide-grid article { min-height: 300px; }
.platform-mark.tiktok { background: #111827; }
.platform-mark.shopee { background: linear-gradient(135deg, #ff7b32, #f14134); }
.upload-guide-grid ol { margin: 16px 0 0; padding-left: 24px; }
.upload-guide-grid li { margin: 8px 0; color: #46556d; line-height: 1.55; }

.posting-time-card {
    display: grid;
    grid-template-columns: .75fr 1.25fr;
    gap: 24px;
    background: linear-gradient(135deg, #0d615e, #127ca0);
}

.posting-time-card h3 { margin: 5px 0 8px; font-size: 1.5rem; }
.posting-time-card p { margin: 0; color: rgba(255,255,255,.78); line-height: 1.6; }

.guide-checks {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.guide-checks span {
    padding: 10px 14px;
    border: 1px solid #bee5dc;
    border-radius: 999px;
    color: #08776d;
    background: #eefbf8;
    font-weight: 650;
}

.guide-privacy-note {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin: 22px 0;
    padding: 18px 20px;
    border: 1px solid #bae6fd;
    border-radius: 18px;
    background: linear-gradient(135deg, #eff6ff, #ecfeff);
    color: #0f172a;
}

.guide-privacy-note > span {
    display: grid;
    flex: 0 0 42px;
    width: 42px;
    height: 42px;
    place-items: center;
    border-radius: 13px;
    background: #fff;
    box-shadow: 0 8px 24px rgba(14, 116, 144, .12);
}

.guide-privacy-note p {
    margin: 4px 0 0;
    color: #475569;
}

.guide-troubleshoot details {
    margin-top: 10px;
    border: 1px solid var(--guide-line);
    border-radius: 16px;
    background: #fbfdff;
}

.guide-troubleshoot summary {
    padding: 17px 20px;
    cursor: pointer;
    font-weight: 750;
}

.guide-troubleshoot details p {
    margin: 0;
    padding: 0 20px 18px;
    color: var(--guide-muted);
    line-height: 1.65;
}

.guide-footer {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    align-items: center;
    margin-top: 24px;
    padding: 28px 34px;
    border-radius: 25px;
    color: #fff;
    background: linear-gradient(135deg, #1d73e8, #6553db 55%, #ef5d61);
}

.guide-footer strong { font-size: 1.4rem; }
.guide-footer p { margin: 4px 0 0; color: rgba(255,255,255,.82); }
.guide-footer .primary-btn { color: #14345f; background: #fff; }

.page-guide-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 8px 14px;
    border: 1px solid #b9d8ff;
    border-radius: 13px;
    color: #1767d4;
    background: #edf6ff;
    text-decoration: none;
    font-weight: 750;
    white-space: nowrap;
}

.page-guide-button:hover,
.page-guide-button:focus-visible {
    color: #fff;
    background: #1767d4;
    outline: 3px solid rgba(36, 120, 234, .24);
}

@media (max-width: 980px) {
    .guide-hero { grid-template-columns: 1fr; }
    .guide-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .source-guide-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .posting-time-card { grid-template-columns: 1fr; }
    .page-guide-button { min-width: 44px; font-size: 0; }
    .page-guide-button::after { content: '?'; font-size: 1rem; }
}

@media (max-width: 680px) {
    .guide-manual { width: min(100% - 18px, 1240px); margin-top: 12px; }
    .guide-hero { padding: 25px 20px; border-radius: 24px; }
    .guide-hero h1 { font-size: 2.55rem; }
    .guide-hero-visual { grid-template-columns: 46px 1fr; padding: 18px; }
    .guide-hero-visual span { width: 44px; height: 44px; border-radius: 14px; }
    .guide-toc { top: 68px; margin: 12px 0; }
    .guide-section { scroll-margin-top: 130px; padding: 22px 16px; border-radius: 22px; }
    .guide-heading { grid-template-columns: 50px minmax(0, 1fr); gap: 12px; }
    .guide-heading > span { width: 48px; height: 48px; border-radius: 15px; font-size: 1rem; }
    .guide-heading h2 { font-size: 1.7rem; }
    .guide-steps,
    .guide-source-flows,
    .source-guide-grid,
    .upload-guide-grid,
    .guide-settings dl,
    .posting-time-card dl { grid-template-columns: 1fr; }
    .guide-number-list article { grid-template-columns: 44px minmax(0, 1fr); padding: 15px; }
    .guide-number-list article > b { width: 40px; height: 40px; }
    .guide-shot { border-radius: 16px; }
    .guide-shot img { min-height: 250px; object-fit: cover; object-position: left top; }
    .guide-footer { align-items: flex-start; flex-direction: column; padding: 24px 20px; }
}

@media print {
    .topbar,
    .guide-toc,
    .guide-actions,
    .guide-footer .primary-btn { display: none !important; }
    .guide-manual { width: 100%; margin: 0; }
    .guide-hero,
    .guide-section,
    .guide-shot { break-inside: avoid; box-shadow: none; }
    .guide-section { margin-top: 16px; padding: 24px; }
    .guide-shot img { max-height: 560px; object-fit: contain; }
}