/* ============================================================
   style.css — 鬼谷子解读全站样式层
   基调：个人主页同款森林绿 × 米白纸（长滚动单页）
   全站颜色、字体、圆角、间距的唯一取值来源
   ============================================================ */

:root {

    /* 【色板 · 绿】森林绿主色与深绿画布 */
    --green: #1e5c3a;

    --green-deep: #123524;

    --green-canvas: #0d2a1b;

    --green-mist: #e8f2ec;

    --green-line: #cfe3d6;

    /* 【色板 · 纸】米白纸底与白卡 */
    --paper: #fafaf7;

    --card: #ffffff;

    /* 【色板 · 墨】墨绿黑正字与次级灰绿字 */
    --ink: #1c2a22;

    --ink-soft: #6b7d72;

    /* 【色板 · 深底字】深绿画布上的米白与浅绿字 */
    --canvas-ink: #eef7f0;

    --canvas-ink-soft: #9db8a8;

    /* 【字体】正文黑体与等宽编号两族 */
    --font-body: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;

    --font-mono: Consolas, "SFMono-Regular", "JetBrains Mono", monospace;

    /* 【圆角】白卡、编号徽章与胶囊 */
    --radius-card: 16px;

    --radius-badge: 9px;

    --radius-chip: 999px;

    /* 【间距】分区节奏与卡片内距 */
    --space-section: 96px;

    --space-card: 28px;

    /* 【版心】内容区最大宽度 */
    --width-page: 980px;

}

/* ============================================================
   基础重置
   ============================================================ */

* {

    box-sizing: border-box;

    margin: 0;

    padding: 0;

}

html {

    scroll-behavior: smooth;

}

body {

    background: var(--paper);

    color: var(--ink);

    font-family: var(--font-body);

    font-size: 16px;

    line-height: 1.85;

}

::selection {

    background: var(--green);

    color: #fff;

}

/* ============================================================
   顶栏
   ============================================================ */

.topbar {

    position: sticky;

    top: 0;

    z-index: 60;

    background: rgba(250, 250, 247, 0.92);

    backdrop-filter: blur(10px);

    border-bottom: 1px solid var(--green-line);

}

.topbar-inner {

    max-width: 1160px;

    margin: 0 auto;

    padding: 10px 24px;

    display: flex;

    align-items: center;

    gap: 20px;

}

.brand {

    display: flex;

    align-items: center;

    gap: 11px;

    text-decoration: none;

    color: var(--ink);

    flex-shrink: 0;

}

.brand-badge {

    width: 40px;

    height: 40px;

    border-radius: var(--radius-badge);

    background: var(--green);

    color: #fff;

    font-size: 20px;

    font-weight: 700;

    display: flex;

    align-items: center;

    justify-content: center;

}

.brand-text {

    display: flex;

    flex-direction: column;

    line-height: 1.3;

}

.brand-title {

    font-size: 17px;

    font-weight: 700;

    letter-spacing: 2px;

}

.brand-sub {

    font-family: var(--font-mono);

    font-size: 10.5px;

    color: var(--ink-soft);

    letter-spacing: 0.5px;

}

/* 篇目导航：桌面横向滚动 chips */
.toc {

    flex: 1;

    display: flex;

    align-items: center;

    gap: 8px;

    overflow-x: auto;

    scrollbar-width: none;

}

.toc::-webkit-scrollbar {

    display: none;

}

.toc-chip {

    flex-shrink: 0;

    font-family: var(--font-mono);

    font-size: 12px;

    color: var(--ink-soft);

    background: transparent;

    border: 1px solid var(--green-line);

    border-radius: var(--radius-chip);

    padding: 4px 12px;

    cursor: pointer;

    transition: all 0.18s ease;

}

.toc-chip:hover {

    color: #fff;

    background: var(--green);

    border-color: var(--green);

}

.toc-chip.active {

    color: #fff;

    background: var(--green);

    border-color: var(--green);

}

.topbar-side {

    display: flex;

    align-items: center;

    gap: 10px;

    flex-shrink: 0;

}

.admin-chip {

    font-size: 12px;

    font-weight: 600;

    color: var(--green);

    background: var(--green-mist);

    border: 1px solid var(--green-line);

    border-radius: var(--radius-chip);

    padding: 3px 12px;

}

.toc-toggle {

    display: none;

    font-family: var(--font-body);

    font-size: 13px;

    color: var(--green);

    background: var(--green-mist);

    border: 1px solid var(--green-line);

    border-radius: var(--radius-chip);

    padding: 4px 14px;

    cursor: pointer;

}

/* 移动端篇目抽屉 */
.toc-drawer[hidden] {

    display: none;

}

.toc-drawer {

    display: flex;

    flex-wrap: wrap;

    gap: 8px;

    padding: 12px 24px 16px;

    border-top: 1px dashed var(--green-line);

}

/* ============================================================
   首屏导语区
   ============================================================ */

.hero {

    background:

        radial-gradient(ellipse 900px 420px at 85% -10%, rgba(30, 92, 58, 0.08), transparent),

        repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(30, 92, 58, 0.035) 39px, rgba(30, 92, 58, 0.035) 40px),

        repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(30, 92, 58, 0.035) 39px, rgba(30, 92, 58, 0.035) 40px),

        var(--paper);

    border-bottom: 1px solid var(--green-line);

}

.hero-inner {

    max-width: var(--width-page);

    margin: 0 auto;

    padding: 88px 24px 72px;

}

.eyebrow {

    font-family: var(--font-mono);

    font-size: 12px;

    letter-spacing: 3px;

    color: var(--green);

    margin-bottom: 18px;

}

.hero-title {

    font-size: clamp(30px, 5vw, 46px);

    font-weight: 800;

    line-height: 1.35;

    letter-spacing: 1px;

    margin-bottom: 18px;

}

.hero-title em {

    font-style: normal;

    color: var(--green);

    border-bottom: 4px solid rgba(30, 92, 58, 0.25);

}

.hero-sub {

    font-size: 15.5px;

    color: var(--ink-soft);

    max-width: 720px;

    margin-bottom: 34px;

}

/* 四件套图例 */
.legend {

    display: grid;

    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));

    gap: 12px;

}

.legend-item {

    display: flex;

    align-items: center;

    gap: 10px;

    background: var(--card);

    border: 1px solid var(--green-line);

    border-radius: var(--radius-card);

    padding: 12px 16px;

}

.legend-tag {

    flex-shrink: 0;

    font-size: 12px;

    font-weight: 700;

    border-radius: var(--radius-badge);

    padding: 3px 10px;

}

.tag-original {

    color: #fff;

    background: var(--green);

}

.tag-notes {

    color: var(--green);

    background: var(--green-mist);

    border: 1px solid var(--green-line);

}

.tag-vernacular {

    color: #fff;

    background: var(--green-deep);

}

.tag-case {

    color: var(--ink);

    background: #f4e7cf;

}

.legend-desc {

    font-size: 13px;

    color: var(--ink-soft);

}

/* ============================================================
   篇区
   ============================================================ */

.chapters {

    max-width: var(--width-page);

    margin: 0 auto;

    padding: 0 24px;

}

.chapter {

    padding-top: var(--space-section);

}

/* 篇头：编号徽章 + 篇名 + 导读 */
.chapter-head {

    display: flex;

    align-items: flex-start;

    gap: 18px;

    margin-bottom: 30px;

}

.chapter-no {

    flex-shrink: 0;

    min-width: 64px;

    height: 64px;

    border-radius: var(--radius-badge);

    background: var(--green);

    color: #fff;

    font-family: var(--font-mono);

    font-size: 24px;

    font-weight: 700;

    display: flex;

    align-items: center;

    justify-content: center;

    box-shadow: 0 8px 22px rgba(30, 92, 58, 0.28);

}

.chapter-head-text {

    flex: 1;

}

.chapter-eyebrow {

    font-family: var(--font-mono);

    font-size: 11.5px;

    letter-spacing: 2px;

    color: var(--ink-soft);

    margin-bottom: 4px;

}

.chapter-name {

    font-size: 28px;

    font-weight: 800;

    letter-spacing: 3px;

    line-height: 1.3;

}

.chapter-intro {

    margin-top: 10px;

    font-size: 14.5px;

    color: var(--ink-soft);

    border-left: 3px solid var(--green-line);

    padding-left: 14px;

}

/* 亡佚篇存目卡的特殊态 */
.chapter.is-lost .chapter-no {

    background: var(--ink-soft);

    box-shadow: none;

}

/* 段落白卡 */
.segment {

    background: var(--card);

    border: 1px solid var(--green-line);

    border-radius: var(--radius-card);

    padding: var(--space-card);

    margin-bottom: 22px;

    box-shadow: 0 3px 14px rgba(28, 42, 34, 0.05);

}

.segment-head {

    display: flex;

    align-items: center;

    gap: 12px;

    margin-bottom: 16px;

}

.segment-no {

    font-family: var(--font-mono);

    font-size: 12px;

    font-weight: 700;

    color: #fff;

    background: var(--green);

    border-radius: var(--radius-badge);

    padding: 3px 11px;

}

.segment-title {

    font-size: 15px;

    font-weight: 700;

    color: var(--green-deep);

    letter-spacing: 1px;

}

/* 原文块 */
.original {

    background: var(--green-mist);

    border: 1px solid var(--green-line);

    border-radius: 12px;

    padding: 18px 20px;

    font-size: 16.5px;

    line-height: 2.05;

    letter-spacing: 0.5px;

    margin-bottom: 18px;

}

.original-label {

    display: block;

    font-family: var(--font-mono);

    font-size: 10.5px;

    letter-spacing: 2px;

    color: var(--green);

    margin-bottom: 8px;

}

/* 注释区 */
.notes {

    margin-bottom: 18px;

}

.notes-title,

.vernacular-title,

.case-title {

    display: flex;

    align-items: center;

    gap: 8px;

    font-size: 13px;

    font-weight: 700;

    letter-spacing: 2px;

    color: var(--ink-soft);

    margin-bottom: 8px;

}

.notes-title::before,

.vernacular-title::before,

.case-title::before {

    content: "";

    width: 7px;

    height: 7px;

    border-radius: 2px;

    background: var(--green);

}

.note-item {

    font-size: 14px;

    line-height: 1.9;

    padding: 2px 0;

}

.note-term {

    font-weight: 700;

    color: var(--green-deep);

}

.translation {

    font-size: 14.5px;

    color: var(--ink);

    background: #fbfcfa;

    border: 1px dashed var(--green-line);

    border-radius: 10px;

    padding: 12px 16px;

    margin-top: 10px;

}

.translation-label {

    font-family: var(--font-mono);

    font-size: 10.5px;

    letter-spacing: 2px;

    color: var(--ink-soft);

    display: block;

    margin-bottom: 4px;

}

/* 大白话区 */
.vernacular {

    margin-bottom: 18px;

}

.vernacular-text {

    font-size: 15.5px;

    line-height: 2;

}

/* 案例区 */
.case {

    background: #fdf9f0;

    border: 1px solid #ecdfc3;

    border-radius: 12px;

    padding: 16px 20px;

}

.case-title::before {

    background: #d8a531;

}

.case-scene {

    font-size: 14px;

    font-weight: 700;

    color: var(--ink);

    margin-bottom: 6px;

}

.case-story {

    font-size: 14.5px;

    line-height: 1.95;

    color: #4d4636;

}

/* 段间衔接：上一段/下一段提示 */
.segment-nav {

    display: flex;

    justify-content: space-between;

    font-family: var(--font-mono);

    font-size: 11px;

    color: var(--ink-soft);

    margin-top: -8px;

    margin-bottom: 26px;

    padding: 0 6px;

}

/* 加载与空态 */
.chapter-loading {

    font-family: var(--font-mono);

    font-size: 12.5px;

    color: var(--ink-soft);

    padding: 30px 0;

}

.noscript-tip {

    padding: 40px 0;

    color: var(--ink-soft);

}

/* ============================================================
   页脚
   ============================================================ */

.footer {

    margin-top: var(--space-section);

    background: var(--green-deep);

    color: var(--canvas-ink);

}

.footer-inner {

    max-width: var(--width-page);

    margin: 0 auto;

    padding: 46px 24px 40px;

    text-align: center;

}

.footer-line {

    font-size: 15px;

    letter-spacing: 3px;

    margin-bottom: 12px;

}

.footer-meta {

    font-family: var(--font-mono);

    font-size: 11.5px;

    color: var(--canvas-ink-soft);

}

.admin-entry {

    font-family: var(--font-mono);

    font-size: 11.5px;

    color: var(--canvas-ink-soft);

    background: transparent;

    border: none;

    border-bottom: 1px dotted var(--canvas-ink-soft);

    cursor: pointer;

    padding: 0;

}

.admin-entry:hover {

    color: #fff;

    border-bottom-color: #fff;

}

/* ============================================================
   登录弹层
   ============================================================ */

.modal-mask[hidden] {

    display: none;

}

.modal-mask {

    position: fixed;

    inset: 0;

    z-index: 100;

    background: rgba(18, 53, 36, 0.55);

    backdrop-filter: blur(4px);

    display: flex;

    align-items: center;

    justify-content: center;

    padding: 20px;

}

.modal {

    width: min(380px, 94vw);

    background: var(--card);

    border-radius: var(--radius-card);

    border: 1px solid var(--green-line);

    padding: 30px 28px;

    box-shadow: 0 24px 60px rgba(13, 42, 27, 0.35);

}

.modal-title {

    font-size: 19px;

    font-weight: 800;

    letter-spacing: 2px;

    margin-bottom: 6px;

}

.modal-sub {

    font-size: 12.5px;

    color: var(--ink-soft);

    margin-bottom: 18px;

}

.modal-input {

    width: 100%;

    padding: 11px 14px;

    border: 1px solid var(--green-line);

    border-radius: 10px;

    font-size: 14.5px;

    margin-bottom: 12px;

    outline: none;

}

.modal-input:focus {

    border-color: var(--green);

}

.modal-err {

    font-size: 12.5px;

    color: #a33;

    background: #fdecec;

    border-radius: 8px;

    padding: 7px 11px;

    margin-bottom: 12px;

}

.modal-actions {

    display: flex;

    justify-content: flex-end;

    gap: 10px;

}

.btn-ghost {

    font-size: 13.5px;

    color: var(--ink-soft);

    background: transparent;

    border: 1px solid var(--green-line);

    border-radius: 10px;

    padding: 8px 18px;

    cursor: pointer;

}

.btn-primary {

    font-size: 13.5px;

    font-weight: 700;

    color: #fff;

    background: var(--green);

    border: none;

    border-radius: 10px;

    padding: 8px 20px;

    cursor: pointer;

}

.btn-primary:disabled {

    opacity: 0.6;

    cursor: wait;

}

/* ============================================================
   渐入动效与响应式
   ============================================================ */

.reveal {

    opacity: 0;

    transform: translateY(16px);

    transition: opacity 0.55s ease, transform 0.55s ease;

}

.reveal.in {

    opacity: 1;

    transform: none;

}

@media (max-width: 420px) {

    .topbar-inner {

        padding: 10px 14px;

        gap: 10px;

    }

    .brand-badge {

        width: 34px;

        height: 34px;

        font-size: 17px;

    }

    .brand-title {

        font-size: 15px;

        letter-spacing: 1px;

    }

    .brand-sub {

        font-size: 9px;

    }

}

@media (max-width: 760px) {

    .toc {

        display: none;

    }

    .toc-toggle {

        display: block;

    }

    .hero-inner {

        padding: 60px 20px 48px;

    }

    .chapters {

        padding: 0 16px;

    }

    .segment {

        padding: 20px 16px;

    }

    .chapter-no {

        min-width: 52px;

        height: 52px;

        font-size: 20px;

    }

    .chapter-name {

        font-size: 23px;

    }

}