/* =============================================
   Protocol Anchor Pages — Stylesheet
   Version: 1.0.0
   Added: 2026-03-23
   ============================================= */

/* --- Layout Container --- */
.protocol-container {
    max-width: 760px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Breadcrumb --- */
.protocol-breadcrumb {
    padding: 16px 0;
    background: #05141B;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.protocol-breadcrumb__list {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0;
    margin: 0;
    padding: 0;
    font-size: 13px;
}
.protocol-breadcrumb__list a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: color 0.2s;
}
.protocol-breadcrumb__list a:hover {
    color: rgba(255, 255, 255, 0.8);
}
.protocol-breadcrumb__sep {
    color: rgba(255, 255, 255, 0.3);
    margin: 0 8px;
}
.protocol-breadcrumb__list [aria-current="page"] {
    color: rgba(255, 255, 255, 0.7);
}

/* --- Header --- */
.protocol-header {
    padding: 48px 0 40px;
    background: #05141B;
    text-align: center;
}
.protocol-header__pillar {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: #B08D57;
    margin-bottom: 12px;
}
.protocol-header__title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    color: #FFFFFF;
    line-height: 1.2;
    margin: 0 0 24px;
}
.protocol-header__direct-answer {
    max-width: 640px;
    margin: 0 auto 20px;
}
.protocol-header__direct-answer p {
    font-size: 18px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.85);
    margin: 0;
}
.protocol-header__meta {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
}
.protocol-header__sep {
    margin: 0 8px;
}

/* --- Content Sections --- */
.protocol-section {
    padding: 48px 0;
}
.protocol-section--what {
    background: #FFFFFF;
}
.protocol-section--how {
    background: #F8F8F6;
}
.protocol-section--when {
    background: #FFFFFF;
}
.protocol-section__heading {
    font-size: clamp(22px, 3vw, 28px);
    font-weight: 700;
    color: #05141B;
    margin: 0 0 24px;
}
.protocol-section__content {
    font-size: 16px;
    line-height: 1.75;
    color: #2A2A2A;
}
.protocol-section__content p {
    margin: 0 0 16px;
}
.protocol-section__content p:last-child {
    margin-bottom: 0;
}

/* --- Book Plug --- */
.protocol-book-plug {
    padding: 48px 0;
    background: #F4F0EA;
}
.protocol-book-plug__grid {
    display: flex;
    align-items: center;
    gap: 32px;
}
.protocol-book-plug__image img {
    border-radius: 4px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}
.protocol-book-plug__heading {
    font-size: 20px;
    font-weight: 700;
    color: #05141B;
    margin: 0 0 12px;
}
.protocol-book-plug__copy p {
    font-size: 15px;
    line-height: 1.6;
    color: #2A2A2A;
    margin: 0 0 16px;
}

/* --- CTA Block --- */
.protocol-cta {
    padding: 56px 0;
    background: #05141B;
    text-align: center;
}
.protocol-cta__text {
    font-size: 18px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.85);
    margin: 0 0 24px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* --- Buttons --- */
.protocol-btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.2s;
    cursor: pointer;
}
.protocol-btn--primary {
    background: #B08D57;
    color: #FFFFFF;
}
.protocol-btn--primary:hover {
    background: #9A7A4A;
    color: #FFFFFF;
}
.protocol-btn--secondary {
    background: transparent;
    color: #B08D57;
    border: 1px solid #B08D57;
}
.protocol-btn--secondary:hover {
    background: #B08D57;
    color: #FFFFFF;
}

/* --- FAQ --- */
.protocol-faq {
    padding: 48px 0;
    background: #F8F8F6;
}
.protocol-faq__heading {
    font-size: clamp(22px, 3vw, 28px);
    font-weight: 700;
    color: #05141B;
    margin: 0 0 24px;
}
.protocol-faq__item {
    border-bottom: 1px solid #E0DDD7;
    padding: 0;
}
.protocol-faq__question {
    padding: 16px 0;
    font-size: 16px;
    font-weight: 600;
    color: #05141B;
    cursor: pointer;
    list-style: none;
}
.protocol-faq__question::-webkit-details-marker {
    display: none;
}
.protocol-faq__question::after {
    content: '+';
    float: right;
    font-size: 20px;
    font-weight: 300;
    color: #B08D57;
    transition: transform 0.2s;
}
.protocol-faq__item[open] .protocol-faq__question::after {
    content: '\2212';
}
.protocol-faq__answer {
    padding: 0 0 16px;
    font-size: 15px;
    line-height: 1.6;
    color: #2A2A2A;
}

/* --- Related Articles --- */
.protocol-related {
    padding: 48px 0;
    background: #FFFFFF;
}
.protocol-related__heading {
    font-size: clamp(22px, 3vw, 28px);
    font-weight: 700;
    color: #05141B;
    margin: 0 0 24px;
}
.protocol-related__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 24px;
}
.protocol-related__card {
    text-decoration: none;
    color: inherit;
    border: 1px solid #E0DDD7;
    border-radius: 6px;
    overflow: hidden;
    transition: box-shadow 0.2s;
}
.protocol-related__card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}
.protocol-related__image {
    width: 100%;
    height: 160px;
    object-fit: cover;
}
.protocol-related__title {
    font-size: 15px;
    font-weight: 600;
    color: #05141B;
    margin: 12px 16px 8px;
    line-height: 1.3;
}
.protocol-related__read {
    display: block;
    font-size: 13px;
    color: #B08D57;
    padding: 0 16px 16px;
}

/* --- Archive Page --- */
.protocol-archive__header {
    padding: 48px 0 40px;
    background: #05141B;
}
.protocol-archive__header .protocol-container {
    max-width: 900px;
}
.protocol-archive__title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    color: #FFFFFF;
    margin: 16px 0 16px;
}
.protocol-archive__intro {
    font-size: 17px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.75);
    max-width: 640px;
}
.protocol-archive__body {
    padding: 48px 0;
    background: #FFFFFF;
}
.protocol-archive__body .protocol-container {
    max-width: 900px;
}
.protocol-archive__pillar-group {
    margin-bottom: 48px;
}
.protocol-archive__pillar-group:last-child {
    margin-bottom: 0;
}
.protocol-archive__pillar-name {
    font-size: 22px;
    font-weight: 700;
    color: #05141B;
    margin: 0 0 8px;
    padding-bottom: 12px;
    border-bottom: 2px solid #B08D57;
}
.protocol-archive__pillar-desc {
    font-size: 14px;
    color: #666;
    margin: 0 0 20px;
}
.protocol-archive__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}
.protocol-archive__card {
    display: block;
    text-decoration: none;
    color: inherit;
    padding: 20px 24px;
    border: 1px solid #E0DDD7;
    border-radius: 6px;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.protocol-archive__card:hover {
    border-color: #B08D57;
    box-shadow: 0 2px 12px rgba(176, 141, 87, 0.12);
}
.protocol-archive__card-title {
    font-size: 17px;
    font-weight: 600;
    color: #05141B;
    margin: 0 0 8px;
}
.protocol-archive__card-excerpt {
    font-size: 14px;
    line-height: 1.5;
    color: #555;
    margin: 0 0 12px;
}
.protocol-archive__card-link {
    font-size: 13px;
    font-weight: 600;
    color: #B08D57;
}

/* --- Archive CTA --- */
.protocol-archive__cta {
    padding: 56px 0;
    background: #05141B;
    text-align: center;
}
.protocol-archive__cta .protocol-container {
    max-width: 640px;
}
.protocol-archive__cta-heading {
    font-size: clamp(22px, 3vw, 28px);
    font-weight: 700;
    color: #FFFFFF;
    margin: 0 0 16px;
}
.protocol-archive__cta-text {
    font-size: 16px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.75);
    margin: 0 0 24px;
}

/* --- Archive Empty State --- */
.protocol-archive__empty {
    text-align: center;
    font-size: 16px;
    color: #666;
    padding: 48px 0;
}

/* --- Responsive --- */
@media (max-width: 600px) {
    .protocol-book-plug__grid {
        flex-direction: column;
        text-align: center;
    }
    .protocol-book-plug__image img {
        width: 140px;
        height: auto;
    }
    .protocol-related__grid {
        grid-template-columns: 1fr;
    }
    .protocol-archive__grid {
        grid-template-columns: 1fr;
    }
}