/* ========================================
   敬轩武馆 - 中国水墨风格样式表
   ======================================== */

/* CSS 变量 - 传统配色 */
:root {
    /* 主色调 - 墨色系 */
    --ink-darkest: #1a1a1a;
    --ink-dark: #2d2d2d;
    --ink-medium: #4a4a4a;
    --ink-light: #6b6b6b;
    --ink-lighter: #999999;
    
    /* 纸色系 */
    --paper-white: #fdfcf7;
    --paper-cream: #f5f0e6;
    --paper-light: #ebe6db;
    --paper-medium: #d9d2c4;
    
    /* 朱砂红 - 点缀色 */
    --cinnabar: #c41e3a;
    --cinnabar-light: #d94a5e;
    --cinnabar-dark: #9b182d;
    
    /* 青绿 - 辅助色 */
    --qinglv: #2d5a4f;
    --qinglv-light: #3d7a6b;
    
    /* 金色 - 荣誉色 */
    --gold: #c8a95e;
    --gold-light: #dcc48a;
    
    /* 间距系统 */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* 字体 */
    --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Microsoft YaHei', serif;
    --font-brush: 'KaiTi', 'Kaiti SC', 'STKaiti', 'BiauKai', 'DFKai-SB', serif;
    --font-hand: 'Zhi Mang Xing', 'KaiTi', 'STKaiti', serif;   /* 首页竖排馆名专用原书法体 */
    --font-sans: 'Noto Serif SC', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* 容器 */
    --container-max: 1200px;
    --container-padding: 1.5rem;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 阴影 */
    --shadow-soft: 0 2px 16px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 4px 24px rgba(0, 0, 0, 0.12);
    --shadow-strong: 0 8px 32px rgba(0, 0, 0, 0.16);
}

/* ========================================
   重置与基础
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

@media (max-width: 768px) {
    html { font-size: 14px; }
}

body {
    font-family: var(--font-sans);
    font-weight: 400;
    line-height: 1.7;
    color: var(--ink-dark);
    background-color: var(--paper-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* 选择文本样式 */
::selection {
    background: var(--cinnabar);
    color: var(--paper-white);
}

/* 滚动条 */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--paper-light); }
::-webkit-scrollbar-thumb { background: var(--ink-light); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-medium); }

/* ========================================
   通用工具类
   ======================================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

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

a { color: inherit; text-decoration: none; transition: color var(--transition-fast); }

ul, ol { list-style: none; }

/* ========================================
   背景水墨纹理
   ======================================== */
.ink-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.ink-layer {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.03;
    animation: inkFloat 60s infinite alternate ease-in-out;
}

.ink-layer.layer-1 {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1000 1000'%3E%3Cpath d='M100,300 Q300,100 500,300 Q700,500 900,300' stroke='%23000' stroke-width='2' fill='none' opacity='0.3'/%3E%3Ccircle cx='300' cy='700' r='200' fill='%23000' opacity='0.1'/%3E%3C/svg%3E");
    animation-duration: 80s;
}

.ink-layer.layer-2 {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1000 1000'%3E%3Cpath d='M200,800 Q400,600 600,800 Q800,1000 1000,800' stroke='%23000' stroke-width='1.5' fill='none' opacity='0.2'/%3E%3Cellipse cx='700' cy='200' rx='300' ry='150' fill='%23000' opacity='0.08'/%3E%3C/svg%3E");
    animation-duration: 100s;
    animation-delay: -20s;
}

.ink-layer.layer-3 {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1000 1000'%3E%3Cpath d='M50,500 Q250,300 500,500 Q750,700 950,500' stroke='%23000' stroke-width='1' fill='none' opacity='0.15'/%3E%3C/svg%3E");
    animation-duration: 120s;
    animation-delay: -40s;
}

@keyframes inkFloat {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(2%, -1%) scale(1.02); }
    100% { transform: translate(-1%, 2%) scale(0.98); }
}

/* ========================================
   顶部导航
   ======================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(253, 252, 247, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--paper-medium);
    transition: box-shadow var(--transition-normal);
}

.site-header.scrolled {
    box-shadow: var(--shadow-soft);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.logo-mark {
    font-family: var(--font-brush);
    font-size: 1.75rem;
    font-weight: 400;
    color: var(--ink-darkest);
    letter-spacing: 0.05em;
}

.logo-text {
    font-size: 0.7rem;
    font-weight: 300;
    color: var(--ink-light);
    letter-spacing: 0.15em;
    margin-top: 2px;
}

.main-nav {
    display: flex;
    gap: var(--space-xl);
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--ink-medium);
    padding: var(--space-xs) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--cinnabar);
    transition: width var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
    color: var(--ink-darkest);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-forum {
    color: var(--cinnabar) !important;
    font-weight: 500;
}

.nav-forum::before {
    content: '🗣';
    margin-right: 4px;
    font-size: 0.9em;
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--ink-dark);
    margin: 5px 0;
    transition: var(--transition-fast);
}

/* ========================================
   主视觉区
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 60%;
    background: linear-gradient(to bottom, transparent, var(--paper-medium), transparent);
    opacity: 0.5;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    width: 100%;
    position: relative;
    z-index: 1;
}

/* ========================================
   首页中段水墨背景 · 仿米芾洞庭空阔图
   只占页面中段，上下留白；整体淡化不影响阅读
   ======================================== */
.hero-painting {
    position: absolute;
    left: 0;
    right: 0;
    top: 15vh;
    bottom: 12vh;
    background: url('images/dongting.jpg') center / cover no-repeat;
    opacity: 0.42;
    filter: saturate(0.88);
    pointer-events: none;
    z-index: 0;
}
.hero-painting::before,
.hero-painting::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 130px;
    pointer-events: none;
}
.hero-painting::before {
    top: -2px;
    background: linear-gradient(to bottom, var(--paper-white) 0%, rgba(253,252,247,0) 100%);
}
.hero-painting::after {
    bottom: -2px;
    background: linear-gradient(to top, var(--paper-white) 0%, rgba(253,252,247,0) 100%);
}

/* ========================================
   首页页脚信息 · 落于底部留白中部（替代原黑色页脚）
   左侧三行左对齐；版权行居中、与"微信公众号"行齐平
   ======================================== */
.hero-foot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: clamp(10px, 2.5vh, 34px);   /* 画底下留白(12vh)的中部 */
    width: min(calc(100% - 48px), calc(var(--container-max) - 48px));
    z-index: 2;
    pointer-events: none;
}
/* 页脚文本（首页与子页共用） */
.hf-brand {
    margin: 0 0 5px;
    font-family: var(--font-serif);
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 0.28em;
    color: var(--ink-dark);
    opacity: 0.66;
}
.hf-meta {
    margin: 0;
    font-size: 0.72rem;
    letter-spacing: 0.06em;
    color: var(--ink-medium);
    opacity: 0.62;
    line-height: 1.9;
}
.hf-copy {
    margin: 0;
    text-align: center;
    font-size: 0.72rem;
    letter-spacing: 0.06em;
    color: var(--ink-medium);
    opacity: 0.62;
    line-height: 1.9;
}

/* 首页：绝对定位叠于底部留白中部 */
.hero-foot .hf-left { text-align: left; }
.hero-foot .hf-copy {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
}
@media (max-width: 991px) {
    .hero-foot .hf-brand { letter-spacing: 0.2em; }
    .hero-foot .hf-copy {
        position: static;
        transform: none;
        white-space: normal;
        margin-top: 2px;
    }
}

/* 子页（about.html）：底部静态页脚，与首页风格一致（无黑底） */
.sub-foot {
    position: relative;
    padding: var(--space-xl) 0 var(--space-lg);
    border-top: 1px solid rgba(0,0,0,0.06);
}
.sub-foot .sf-inner {
    position: relative;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    text-align: left;
    min-height: 3.4em;
}
.sub-foot .hf-left { text-align: left; }
.sub-foot .hf-copy {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
}
@media (max-width: 991px) {
    .sub-foot .hf-copy {
        position: static;
        transform: none;
        white-space: normal;
        text-align: left;
        margin-top: 4px;
    }
}

/* ========================================
   竖排诗诀 · 左入右出滚动
   繁体竖排，自右向左读；整列由左缓缓进入、
   右缘淡出，循环往复
   ======================================== */
.poem-stream {
    position: absolute;
    left: 34px;
    top: 50%;
    transform: translateY(-50%);
    width: min(300px, 24vw);
    height: min(56vh, 460px);
    display: flex;
    justify-content: flex-end;      /* 条带右端对齐：首句贴右 */
    align-items: center;
    overflow: hidden;
    pointer-events: none;
    z-index: 2;
    -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 26%, #000 74%, transparent 100%);
            mask-image: linear-gradient(90deg, transparent 0%, #000 26%, #000 74%, transparent 100%);
}
.poem-strip {
    display: flex;
    flex-direction: row-reverse;    /* DOM 第一句渲染在最右 */
    gap: 38px;
    width: max-content;
    animation: poemDrift 46s linear infinite;
    will-change: transform;
}
.poem-strip span {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    font-family: var(--font-serif);
    font-size: 21px;
    font-weight: 500;
    letter-spacing: 0.4em;
    line-height: 1;
    color: var(--ink-dark);
    opacity: 0.94;
    white-space: nowrap;
}
@keyframes poemDrift {
    from { transform: translateX(0); }
    to   { transform: translateX(50%); }   /* 右移半幅 = 一轮完整诗诀，无缝循环 */
}
@media (prefers-reduced-motion: reduce) {
    .poem-strip { animation: none; }
}

/* 宽屏：为左侧诗诀让出空间 */
@media (min-width: 1280px) {
    .hero .container {
        padding-left: clamp(250px, 19vw, 330px);
    }
}
/* 窄于 1280px 的桌面视口：隐藏侧边诗诀（移动版有专属呈现） */
@media (max-width: 1279px) {
    .poem-stream { display: none; }
}

/* 背景图上保证文字可读 */
.site-title,
.site-motto,
.site-motto-en {
    text-shadow: 0 0 18px rgba(253, 252, 247, 0.85), 0 0 6px rgba(253, 252, 247, 0.55);
}

/* ========================================
   首页改版 v2
   左上:竖排诗诀 | 其下:水墨动环
   右侧:竖版馆名 | 中央:格言
   ======================================== */

/* 诗诀移至左上(header 正下方) */
.poem-stream {
    top: 96px;
    transform: none;
    height: min(44vh, 400px);
}

/* 水墨动环 · 置于诗诀下侧 */
.hero-ink {
    position: absolute;
    left: 34px;
    bottom: 7vh;
    width: min(280px, 21vw);
    z-index: 1;
    pointer-events: none;
}
.hero-ink .ink-brush {
    max-width: 100%;
    opacity: 0.5;
}

/* 右侧竖版馆名(条幅式) */
.title-scroll {
    position: absolute;
    right: clamp(28px, 7vw, 130px);
    top: 50%;
    transform: translateY(-52%);
    margin: 0;
    display: flex;
    flex-direction: row-reverse;   /* 主句居右,副句居左 */
    gap: 26px;
    z-index: 2;
    pointer-events: none;
    writing-mode: vertical-rl;
    text-orientation: mixed;
}
.title-scroll .ts-sub {
    font-family: var(--font-hand);               /* 首页馆名保留原书法体(Zhi Mang Xing),不随楷体统一改动 */
    font-size: clamp(2.5rem, 5vw, 4rem);         /* 上轮基础上放大1/4 */
    letter-spacing: 0.12em;                      /* 字距收紧 */
    line-height: 1.1;
    color: var(--ink-darkest);
}
.title-scroll .ts-year {
    font-family: var(--font-hand);               /* 同馆名原书法体 */
    font-size: clamp(1.1rem, 1.6vw, 1.35rem);
    letter-spacing: 0.26em;
    color: var(--ink-medium);
    margin-bottom: -0.26em;                      /* 抵消末字后字距 */
    margin-right: 3px;                           /* 距红线3px,比社字(6px)更贴近 */
}

/* 中央格言(唯一横排正文) */
.hero-center-motto {
    text-align: center;
    font-size: clamp(1.05rem, 1.6vw, 1.35rem) !important;
    letter-spacing: 0.32em !important;
    color: var(--ink-medium) !important;
    line-height: 2.5 !important;
    max-width: none !important;
    width: 100%;
}

/* ========================================
   首页改版 v3
   1. 左列(诗诀+动环)整体上移成组
   2. 循环改「留白传送带」: 接缝藏于空白,消除跳动;
      尾句右缘淡出时,首句恰好自左淡入
   3. 馆名两列竖写;格言移至馆名正下方并添"也"字
   4. 磬鸟环境音循环播放(手动开关)
   ======================================== */
.left-stack {
    position: absolute;
    left: 34px;
    top: clamp(14px, 2.4vh, 28px);   /* 与上方分割线的距离压缩至原先约 1/3 */
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    width: min(310px, 23vw);
    pointer-events: none;
}
.left-stack .poem-stream {
    position: relative;
    left: auto;
    top: auto;
    transform: none;
    width: 100%;
    height: min(44vh, 400px);
    display: flex;
    justify-content: flex-end;
    align-items: center;
    overflow: hidden;
    -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 26%, #000 74%, transparent 100%);
            mask-image: linear-gradient(90deg, transparent 0%, #000 26%, #000 74%, transparent 100%);
}
/* 关键: 以统一外距取代 gap —— 循环接缝处间距一致,彻底消除周期性跳动 */
.left-stack .poem-strip {
    display: flex;
    flex-direction: row-reverse;
    gap: 0;
    width: max-content;
    animation: poemDrift 52s linear infinite;
    will-change: transform;
}
.left-stack .poem-strip > span {
    margin-left: 40px;              /* row-reverse 下即为列间视觉间距 */
}
.poem-blank {
    width: clamp(150px, 16vw, 230px);   /* 周期间的整段留白 */
    flex: none;
}

/* 动环紧随诗诀之下 */
.hero-ink {
    position: relative;
    left: auto;
    bottom: auto;
    width: 72%;
    margin-left: -3%;
    margin-top: -1vh;
    z-index: 1;
    pointer-events: none;
}

/* 右侧馆名组: 两列竖写 + 下方格言 */
.title-side {
    position: absolute;
    right: clamp(28px, 7vw, 130px);
    top: 46%;
    transform: translateY(calc(-50% + 2vh));   /* 整体下移2vh */
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
    z-index: 2;
    pointer-events: none;
}
.title-scroll {
    position: relative;
    right: auto;
    top: auto;
    transform: none;
    margin: 0;
    display: flex;
    flex-direction: row-reverse;   /* 副句居右,年份列居左,红线夹中 */
    align-items: flex-end;         /* 两列盒底对齐 */
    gap: 0;                        /* 间距改由各列外距精确控制 */
    writing-mode: horizontal-tb;   /* 覆盖旧规则残留的 vertical-rl,否则 flex 行方向被扭成纵向 */
}
.title-scroll .ts-sub,
.title-scroll .ts-year {
    writing-mode: vertical-rl;
    text-orientation: mixed;
}
/* 朱砂线 · 长度随"中华太极拳社"(行内最高元素)拉伸;右侧距社字6px */
.title-scroll .ts-line {
    width: 2px;
    background: var(--cinnabar);
    flex: none;
    align-self: stretch;
    margin-right: 6px;
}
.motto-under {
    margin: 0;
    text-align: center;
    font-family: var(--font-serif);
    font-size: clamp(0.85rem, 1.05vw, 1rem);
    letter-spacing: 0.2em;
    line-height: 2.1;
    color: var(--ink-light);
    text-shadow: 0 0 14px rgba(253, 252, 247, 0.9);
}

/* 磬鸟音效开关 */
.sound-toggle {
    position: fixed;
    right: 26px;
    bottom: 26px;
    z-index: 1500;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 1px solid var(--paper-medium);
    background: rgba(253, 252, 247, 0.92);
    backdrop-filter: blur(6px);
    color: var(--ink-lighter);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
    transition: color .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.sound-toggle:hover { color: var(--cinnabar); border-color: var(--cinnabar); }
.sound-toggle.playing {
    color: var(--cinnabar);
    border-color: var(--cinnabar);
    box-shadow: 0 0 0 4px rgba(196, 30, 58, 0.12);
}
.sound-toggle.playing svg { animation: soundPulse 2.6s ease-in-out infinite; }
.sound-toggle:not(.playing) .sw-waves { opacity: 0.25; }
@keyframes soundPulse {
    0%, 100% { transform: scale(1); }
    50%      { transform: scale(1.1); }
}
.sound-toast {
    position: fixed;
    right: 84px;
    bottom: 34px;
    z-index: 1500;
    padding: 8px 16px;
    border-radius: 999px;
    background: rgba(26, 26, 26, 0.82);
    color: var(--paper-white);
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    opacity: 0;
    transform: translateY(6px);
    transition: opacity .3s ease, transform .3s ease;
    pointer-events: none;
}
.sound-toast.show { opacity: 1; transform: translateY(0); }

/* ===== 馆徽 · 页面正中 · 双层叠印,仅太极层缓转 =====
   两张源图画布同为 423×590,绝对定位同位叠放即可与原 logo.png 完全一致。
   --logo-drop: 整体下移量(正值向下),用于使徽内"敬轩武馆"字形底边
   与右侧朱砂线底端齐平 —— 目测校准旋钮 */
.hero-logo {
    --logo-drop: -2vh;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, calc(-50% + var(--logo-drop)));
    height: min(61vh, 560px);
    aspect-ratio: 423 / 590;
    z-index: 1;
    pointer-events: none;
    filter: drop-shadow(0 6px 22px rgba(26, 26, 26, 0.18));
}
.hero-logo img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}
.hero-logo .hl-spin {
    animation: logoSpin 45s linear infinite;   /* 较此前 28s 更缓 */
    transform-origin: center;
    will-change: transform;
}
@keyframes logoSpin {
    to { transform: rotate(360deg); }
}
@media (prefers-reduced-motion: reduce) {
    .hero-logo .hl-spin { animation: none; }
}

@media (max-width: 1279px) {
    .left-stack { display: none; }
    .title-side { right: 20px; }
}

.hero-text { text-align: left; }

.site-title {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
}

.title-main {
    font-family: var(--font-brush);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 400;
    color: var(--ink-darkest);
    line-height: 1.1;
    letter-spacing: 0.02em;
}

.title-sub {
    font-family: var(--font-serif);
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 300;
    color: var(--ink-medium);
    letter-spacing: 0.2em;
    padding-left: 0.2em;
    border-left: 3px solid var(--cinnabar);
    padding-top: var(--space-xs);
}

.site-motto {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--ink-light);
    line-height: 1.8;
    margin-bottom: var(--space-sm);
    max-width: 40ch;
}

.site-motto-en {
    font-family: 'Georgia', serif;
    font-size: 0.85rem;
    font-style: italic;
    color: var(--ink-lighter);
    line-height: 1.6;
    margin-bottom: var(--space-xl);
    max-width: 50ch;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.75rem;
    font-family: var(--font-serif);
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    border-radius: 2px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.btn-primary {
    background: var(--ink-darkest);
    color: var(--paper-white);
    border-color: var(--ink-darkest);
}

.btn-primary:hover {
    background: var(--cinnabar);
    border-color: var(--cinnabar);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-secondary {
    background: transparent;
    color: var(--ink-dark);
    border-color: var(--ink-medium);
}

.btn-secondary:hover {
    background: var(--ink-darkest);
    color: var(--paper-white);
    border-color: var(--ink-darkest);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* 英雄区右侧水墨装饰 */
.hero-ink {
    display: flex;
    justify-content: center;
    align-items: center;
}

.ink-brush {
    width: 100%;
    max-width: 400px;
    height: auto;
    opacity: 0.6;
    animation: brushRotate 30s infinite linear;
}

@keyframes brushRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ========================================
   通用区块样式
   ======================================== */
.section {
    padding: var(--space-3xl) 0;
    position: relative;
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--paper-medium), transparent);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-title {
    font-family: var(--font-brush);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 400;
    color: var(--ink-darkest);
    letter-spacing: 0.05em;
    position: relative;
    top: -10px;                   /* 教学内容标题整体上移 10px(原-5px,再加5px) */
    display: inline-block;
}

.title-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.divider-line {
    flex: 1;
    max-width: 80px;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--ink-light), transparent);
}

.divider-dot {
    width: 8px;
    height: 8px;
    background: var(--cinnabar);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--paper-white), 0 0 0 5px var(--cinnabar);
}

/* ========================================
   武馆介绍
   ======================================== */
.about-section {
    background: var(--paper-cream);
}

.about-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--paper-medium), transparent);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

.about-text .lead {
    font-size: 1.15rem;
    font-weight: 400;
    color: var(--ink-dark);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
    border-left: 3px solid var(--cinnabar);
    padding-left: var(--space-lg);
}

.about-text p {
    font-size: 1rem;
    color: var(--ink-medium);
    line-height: 1.9;
    margin-bottom: var(--space-lg);
}

.quote {
    margin: var(--space-xl) 0;
    padding: var(--space-xl) var(--space-lg);
    background: var(--paper-white);
    border-left: 3px solid var(--gold);
    box-shadow: var(--shadow-soft);
    position: relative;
}

.quote::before {
    content: '「';
    font-family: var(--font-brush);
    font-size: 4rem;
    color: var(--gold);
    opacity: 0.3;
    position: absolute;
    top: -0.5rem;
    left: 1rem;
    line-height: 1;
}

.quote p {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--ink-dark);
    line-height: 1.8;
    margin: 0;
    position: relative;
    z-index: 1;
}

.quote cite {
    display: block;
    margin-top: var(--space-md);
    font-family: var(--font-serif);
    font-size: 0.9rem;
    font-style: normal;
    color: var(--ink-light);
    text-align: right;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.stat-item {
    text-align: center;
    padding: var(--space-xl);
    background: var(--paper-white);
    border: 1px solid var(--paper-medium);
    transition: all var(--transition-normal);
}

.stat-item:hover {
    border-color: var(--cinnabar);
    box-shadow: var(--shadow-medium);
    transform: translateY(-4px);
}

.stat-number {
    display: block;
    font-family: var(--font-brush);
    font-size: 2.5rem;
    font-weight: 400;
    color: var(--cinnabar);
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--ink-light);
    letter-spacing: 0.05em;
}

/* ========================================
   太极理念
   ======================================== */
.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.philosophy-card {
    text-align: center;
    padding: var(--space-xl) var(--space-md);
    background: var(--paper-white);
    border: 1px solid var(--paper-medium);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.philosophy-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(to right, var(--cinnabar), var(--gold));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.philosophy-card:hover {
    border-color: var(--cinnabar);
    box-shadow: var(--shadow-medium);
    transform: translateY(-6px);
}

.philosophy-card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-md);
    color: var(--ink-light);
    opacity: 0.6;
    transition: all var(--transition-normal);
}

.philosophy-card:hover .card-icon {
    color: var(--cinnabar);
    opacity: 1;
    transform: scale(1.1);
}

.philosophy-card h3 {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--ink-dark);
    margin-bottom: var(--space-sm);
}

.philosophy-card p {
    font-size: 0.9rem;
    color: var(--ink-light);
    line-height: 1.7;
}

/* ========================================
   师资力量
   ======================================== */
.masters-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.master-card {
    background: var(--paper-white);
    border: 1px solid var(--paper-medium);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.master-card:hover {
    border-color: var(--cinnabar);
    box-shadow: var(--shadow-strong);
    transform: translateY(-8px);
}

.master-portrait {
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--paper-light), var(--paper-medium));
    position: relative;
    overflow: hidden;
}

.portrait-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-brush);
    font-size: 1.5rem;
    color: var(--ink-light);
    opacity: 0.5;
}

.master-portrait img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.master-info {
    padding: var(--space-lg);
}

.master-name {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--ink-darkest);
    margin-bottom: var(--space-xs);
}

.master-title {
    display: block;
    font-size: 0.85rem;
    color: var(--cinnabar);
    font-weight: 500;
    margin-bottom: var(--space-md);
}

.master-desc {
    font-size: 0.9rem;
    color: var(--ink-medium);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.master-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.tag {
    font-size: 0.75rem;
    color: var(--ink-light);
    background: var(--paper-light);
    padding: 0.25rem 0.6rem;
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.tag:hover {
    color: var(--cinnabar);
    background: var(--paper-medium);
}

/* ========================================
   底部
   ======================================== */
.site-footer {
    background: var(--ink-darkest);
    color: var(--paper-light);
    padding: var(--space-3xl) 0 var(--space-xl);
    /* 内容距黑色区块上沿的距离 = 这里的顶部内距,两页共用同一数值,
       天然一致;严禁使用负外距移动整个区块(会遮挡上方页面内容) */
}

/* 统一两页footer上间距: 子页最后区块去掉自带的大底内距,
   与首页(hero齐平、零内距)使用同一基准,负外距位移对两页等效 */
.page-sub main > section:last-of-type {
    padding-bottom: 0;
    position: relative;
    top: -60px;   /* 教学内容整体上移(10+20+30) */
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand .footer-logo {
    display: block;
    font-family: var(--font-brush);
    font-size: 1.75rem;
    color: var(--paper-white);
    margin-bottom: var(--space-md);
}

.footer-brand p {
    font-size: 0.9rem;
    color: var(--ink-lighter);
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr;   /* 仅剩"联系我们"一组,单列全宽避免地址/公众号换行 */
    gap: var(--space-xl);
}

/* 页脚对线: 版权区顶边框下移至与"联系我们"h4 下划线同高,
   两线连成一条横贯页脚的直线(左列保持原位,零风险) */
.footer-bottom {
    margin-top: 55px;
}

/* ===== 介绍页 · 四段新排版 ===== */
.section-paper {
    background: var(--paper-white, #fdfcf7);
}
.master-bio .bio-name {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--ink-darkest);
    letter-spacing: .06em;
    margin-bottom: var(--space-md);
}
.master-bio p,
.xinyu-essay p {
    font-size: 1rem;
    line-height: 2.15;
    color: var(--ink-dark);
    margin-bottom: var(--space-md);
    text-align: justify;
}
.founding-text p { line-height: 2.15; }
.essay-heading {
    text-align: center !important;
    font-family: var(--font-brush);
    font-size: 1.7rem;
    color: var(--ink-darkest);
    margin-bottom: var(--space-lg);
}
/* 敬轩心语 · 主/副标题（整体居中，内部左对齐使左边缘齐平）
   注意：必须带 .xinyu-essay 前缀，否则会被上面的 ".xinyu-essay p"
   通用段落规则(0-1-1)覆盖字号/行距/外距 —— 此前"放大不生效"即此因 */
.essay-title {
    width: max-content;
    margin: 0;                    /* 不再居中，与正文同起于容器最左侧 */
    text-align: left;
}
.xinyu-essay .essay-title-main {
    text-align: left;
    font-family: var(--font-serif);   /* 与"周长森（晓轩）先生生平简介"(bio-name)同款宋体 */
    font-size: 1.25rem;               /* 与 bio-name 一致: 1.25rem */
    font-weight: 600;                 /* 与 bio-name 一致: 加粗 */
    letter-spacing: .06em;            /* 与 bio-name 一致: 字距 */
    color: var(--ink-darkest);        /* 与 bio-name 一致: 最深墨色 */
    line-height: 1.6;                 /* 紧凑行距,配合副标题 margin-top:0 */
    margin-bottom: 0;
}
.xinyu-essay .essay-title-sub {
    text-align: left;
    font-family: var(--font-brush);
    font-size: 1.2rem;
    font-weight: 400;
    line-height: 1.4;
    letter-spacing: 0.12em;
    color: var(--ink-medium);
    margin-top: 0;                /* 行距在原基础上缩减约三分之一 */
    margin-bottom: var(--space-lg);
}
.essay-no {
    font-family: var(--font-serif);
    font-size: 1rem;
    color: var(--ink-medium);
    margin-left: .6em;
}
.xinyu-essay .essay-center {
    text-align: center !important;
    font-weight: 500;
    font-size: 1.05rem;
}
.quatrain {
    text-align: center;
    font-family: var(--font-serif);
    font-size: 1.15rem;
    line-height: 2.3;
    letter-spacing: .18em;
    color: var(--ink-darkest);
    margin: var(--space-xl) auto;
}
.xinyu-essay .essay-sign {
    text-align: right !important;
    font-family: var(--font-brush);
    font-size: 1.62rem;            /* 原 1.35rem，增大 1/5（加前缀后真正生效） */
    color: var(--ink-darkest);
}
.course-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-md);
}
.course-list li {
    border: 1px solid var(--ink-light);
    background: var(--paper-cream);
    padding: 20px 12px;
    text-align: center;
    font-family: var(--font-serif);
    font-size: 1.08rem;
    letter-spacing: .08em;
    color: var(--ink-dark);
}

.link-group h4 {
    font-family: var(--font-serif);
    font-size: 1rem;
    font-weight: 500;
    color: var(--gold);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-xs);
    border-bottom: 1px solid var(--ink-medium);
}

.link-group a {
    display: block;
    font-size: 0.9rem;
    color: var(--paper-medium);
    line-height: 2.2;
    transition: color var(--transition-fast);
}

.link-group a:hover {
    color: var(--cinnabar-light);
}

.link-group p {
    font-size: 0.9rem;
    color: var(--paper-medium);
    line-height: 2;
}

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--ink-medium);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.copyright {
    font-size: 0.85rem;
    color: var(--ink-lighter);
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ink-dark);
    border-radius: 50%;
    color: var(--paper-medium);
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background: var(--cinnabar);
    color: var(--paper-white);
    transform: translateY(-2px);
}

.social-links svg {
    width: 20px;
    height: 20px;
}

/* ========================================
   响应式断点
   ======================================== */
@media (max-width: 1024px) {
    .hero-content { grid-template-columns: 1fr; gap: var(--space-2xl); text-align: center; }
    .hero::before { display: none; }
    .title-sub { border-left: none; border-top: 3px solid var(--cinnabar); padding-left: 0; padding-top: var(--space-sm); }
    .site-motto, .site-motto-en { max-width: none; }
    .hero-actions { justify-content: center; }
    .about-content { grid-template-columns: 1fr; gap: var(--space-2xl); }
    .philosophy-grid { grid-template-columns: repeat(2, 1fr); }
    .masters-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-content { grid-template-columns: 1fr; gap: var(--space-2xl); text-align: center; }
    .footer-links { grid-template-columns: 1fr; }
    .footer-bottom { justify-content: center; text-align: center; }
}

@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
    }
    
    .main-nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--paper-white);
        flex-direction: column;
        padding: var(--space-lg);
        gap: var(--space-md);
        border-bottom: 1px solid var(--paper-medium);
        box-shadow: var(--shadow-medium);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        width: 100%;
    }
    
    .main-nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        width: 100%;
        text-align: center;
        padding: var(--space-sm) 0;
        border-bottom: 1px solid var(--paper-light);
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }
    
    .nav-link::after {
        display: none;
    }
    
    .menu-toggle { display: block; z-index: 1001; }
    
    .menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .menu-toggle.active span:nth-child(2) { opacity: 0; }
    .menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
    
    .philosophy-grid { grid-template-columns: 1fr; }
    .masters-grid { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
    :root { --container-padding: 1rem; }
    .about-stats { grid-template-columns: 1fr; }
    .btn { padding: 0.75rem 1.25rem; font-size: 0.9rem; }
}

/* ========================================
   动画
   ======================================== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in-up {
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }
.delay-6 { animation-delay: 0.6s; }

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========================================
   打印样式
   ======================================== */
@media print {
    .ink-bg, .site-header, .hero-actions, .footer-bottom .social-links { display: none !important; }
    .hero { min-height: auto; padding: 2rem 0; }
    .section { page-break-inside: avoid; }
    body { background: white; color: black; }
}

/* ========================================
   版务通知弹窗（水墨风格）
   ======================================== */
.jx-modal-mask {
    position: fixed;
    inset: 0;
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--container-padding);
    background: rgba(26, 26, 26, 0.55);
    backdrop-filter: blur(3px);
    animation: jxFadeIn 0.25s ease;
}

.jx-modal-mask[hidden] { display: none; }

.jx-modal {
    position: relative;
    width: min(560px, 100%);
    max-height: 82vh;
    overflow-y: auto;
    background:
        radial-gradient(ellipse at 85% 12%, rgba(196, 30, 58, 0.05), transparent 55%),
        var(--paper-white);
    border: 1px solid var(--paper-medium);
    box-shadow: var(--shadow-strong);
    padding: var(--space-2xl) var(--space-xl) var(--space-xl);
    animation: jxRiseIn 0.3s ease;
}

.jx-modal::before {
    content: '';
    position: absolute;
    inset: 6px;
    border: 1px solid rgba(74, 74, 74, 0.18);
    pointer-events: none;
}

.jx-modal-seal {
    position: absolute;
    top: 18px;
    right: 22px;
    font-family: var(--font-brush);
    font-size: 1.1rem;
    line-height: 1.15;
    color: #fff;
    background: var(--cinnabar);
    padding: 8px 9px;
    letter-spacing: 2px;
    writing-mode: vertical-rl;
    opacity: 0.92;
    user-select: none;
}

.jx-modal-close {
    position: absolute;
    top: 10px;
    left: 10px;
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    color: var(--ink-light);
    font-size: 1.6rem;
    line-height: 1;
    cursor: pointer;
    z-index: 2;
    transition: color var(--transition-fast);
}

.jx-modal-close:hover { color: var(--cinnabar); }

.jx-modal-kicker {
    font-size: 0.8rem;
    letter-spacing: 0.3em;
    color: var(--cinnabar);
    margin-bottom: var(--space-sm);
}

.jx-modal-title {
    font-family: var(--font-serif);
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--ink-darkest);
    line-height: 1.5;
    margin-bottom: var(--space-xs);
    padding-right: 40px;
}

.jx-modal-meta {
    font-size: 0.82rem;
    color: var(--ink-lighter);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 1px dashed var(--paper-medium);
}

.jx-modal-body {
    font-size: 0.95rem;
    color: var(--ink-medium);
    line-height: 1.9;
    margin-bottom: var(--space-lg);
}

.jx-modal-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.jx-modal-btn { flex: 1 1 auto; text-align: center; }

@keyframes jxFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes jxRiseIn {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 480px) {
    .jx-modal { padding: var(--space-xl) var(--space-md) var(--space-md); }
    .jx-modal-title { font-size: 1.15rem; }
}

/* ========================================
   独立子页面（武馆介绍/太极理念/师资力量）
   ======================================== */
.logo-link { display: block; }

body.page-sub {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.page-main {
    flex: 1;
    padding-top: 72px; /* 让出固定导航高度 */
}

.page-banner {
    position: relative;
    text-align: center;
    padding: var(--space-3xl) 0 var(--space-2xl);
}

.page-banner::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--paper-medium), transparent);
}

.page-title {
    font-family: var(--font-brush);
    font-size: clamp(2.25rem, 5vw, 3.25rem);
    font-weight: 400;
    color: var(--ink-darkest);
    letter-spacing: 0.08em;
}

.page-banner-text {
    margin-top: var(--space-md);
    font-size: 1rem;
    color: var(--ink-light);
    letter-spacing: 0.15em;
}

.extras-title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--ink-dark);
    text-align: center;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-xl);
}

.page-quote {
    max-width: 720px;
    margin: 0 auto var(--space-3xl);
}

.masters-note {
    margin-top: var(--space-xl);
    text-align: center;
    font-size: 0.95rem;
    font-style: italic;
    color: var(--ink-lighter);
}

.page-cta {
    text-align: center;
    padding-bottom: var(--space-2xl);
}

.page-cta p {
    font-size: 1.05rem;
    color: var(--ink-medium);
    margin-bottom: var(--space-lg);
}

.page-cta .hero-actions { justify-content: center; }