/* ============================================
   纪录片频道 - 主样式表
   CSS前缀: docu-
   配色方案: 国家地理探索风
   ============================================ */

/* Google Fonts 本地化替代 - 使用系统字体回退 */
@import url('https://fonts.googleapis.com/css2?family=Libre+Baskerville:ital,wght@0,400;0,700;1,400&family=Source+Sans+3:wght@300;400;600;700&display=swap');

/* ============================================
   CSS Variables
   ============================================ */
:root {
    --docu-primary: #1A3A3A;
    --docu-secondary: #D4AF37;
    --docu-accent: #FFFFFF;
    --docu-text: #EAEAEA;
    --docu-link: #D4AF37;
    --docu-dark: #0F2424;
    --docu-card-bg: #1E4040;
    --docu-border: rgba(212, 175, 55, 0.3);
    --docu-font-heading: 'Libre Baskerville', 'Georgia', serif;
    --docu-font-body: 'Source Sans 3', 'Helvetica Neue', sans-serif;
    --docu-radius: 4px;
    --docu-transition: 0.3s ease;
    --docu-max-width: 1440px;
}

/* ============================================
   Reset & Base
   ============================================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--docu-font-body);
    background-color: var(--docu-primary);
    color: var(--docu-text);
    line-height: 1.8;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: var(--docu-link);
    text-decoration: none;
    transition: color var(--docu-transition);
}

a:hover {
    color: #F0D060;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--docu-font-heading);
    color: var(--docu-accent);
    line-height: 1.3;
    font-weight: 700;
}

/* ============================================
   干扰标签隐藏
   ============================================ */
.explore-jammer-block {
    display: none !important;
}

/* ============================================
   导航栏
   ============================================ */
#docu-header {
    background-color: var(--docu-primary);
    border-top: 3px solid var(--docu-secondary);
    padding: 0;
    z-index: 1000;
    width: 100%;
}

.docu-nav-container {
    max-width: var(--docu-max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
}

.docu-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.docu-logo-icon {
    width: 42px;
    height: 42px;
    border: 2px solid var(--docu-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.docu-logo-icon::before {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid var(--docu-secondary);
    border-radius: 50%;
    position: absolute;
}

.docu-logo-icon::after {
    content: '';
    width: 1px;
    height: 36px;
    background: var(--docu-secondary);
    position: absolute;
    opacity: 0.5;
}

.sp-logo-text {
    font-family: var(--docu-font-heading);
    font-size: 1.25rem;
    color: var(--docu-secondary);
    font-weight: 700;
    letter-spacing: 1px;
}

.docu-nav-menu {
    display: flex;
    list-style: none;
    gap: 0;
    align-items: center;
}

.docu-nav-menu li a {
    font-family: var(--docu-font-heading);
    font-size: 0.9rem;
    color: var(--docu-text);
    padding: 8px 16px;
    position: relative;
    transition: color var(--docu-transition);
    display: block;
}

.docu-nav-menu li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--docu-secondary);
    transition: width var(--docu-transition);
}

.docu-nav-menu li a:hover {
    color: var(--docu-secondary);
}

.docu-nav-menu li a:hover::after {
    width: 80%;
}

/* 汉堡菜单 */
.docu-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    background: none;
    border: none;
}

.docu-hamburger span {
    width: 24px;
    height: 2px;
    background: var(--docu-secondary);
    transition: var(--docu-transition);
    display: block;
}

.docu-mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 9998;
}

.docu-mobile-menu {
    position: fixed;
    top: 0;
    left: -280px;
    width: 280px;
    height: 100%;
    background: var(--docu-primary);
    z-index: 9999;
    transition: left var(--docu-transition);
    padding: 60px 24px 24px;
    overflow-y: auto;
}

.docu-mobile-menu.docu-active {
    left: 0;
}

.docu-mobile-overlay.docu-active {
    display: block;
}

.docu-mobile-menu a {
    display: block;
    font-family: var(--docu-font-heading);
    font-size: 1.1rem;
    color: var(--docu-secondary);
    padding: 14px 0;
    border-bottom: 1px solid var(--docu-border);
}

.docu-mobile-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: var(--docu-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 4px;
}

/* ============================================
   Hero / 全球映像
   ============================================ */
.docu-hero {
    position: relative;
    height: 85vh;
    min-height: 500px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.docu-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.5);
    animation: docu-focus 1.5s ease-out;
}

@keyframes docu-focus {
    from { filter: brightness(0.5) blur(10px); }
    to { filter: brightness(0.5) blur(0); }
}

.docu-hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 24px;
}

.docu-hero-slogan {
    font-family: var(--docu-font-heading);
    font-size: 3rem;
    color: var(--docu-accent);
    margin-bottom: 20px;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.5);
}

.docu-hero-desc {
    font-size: 1.2rem;
    color: var(--docu-text);
    line-height: 1.8;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.5);
}

.docu-hero-cta {
    display: inline-block;
    margin-top: 30px;
    padding: 14px 36px;
    background: var(--docu-primary);
    color: var(--docu-secondary);
    border: 2px solid var(--docu-secondary);
    font-family: var(--docu-font-heading);
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--docu-transition);
}

.docu-hero-cta:hover {
    background: var(--docu-secondary);
    color: var(--docu-primary);
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.4);
}

/* ============================================
   通用模块标题
   ============================================ */
.docu-section-title {
    font-family: var(--docu-font-heading);
    font-size: 2rem;
    color: var(--docu-secondary);
    text-align: center;
    margin-bottom: 12px;
    position: relative;
}

.docu-section-subtitle {
    text-align: center;
    color: var(--docu-text);
    font-size: 1rem;
    margin-bottom: 40px;
    opacity: 0.8;
}

.docu-section {
    padding: 80px 24px;
    max-width: var(--docu-max-width);
    margin: 0 auto;
}

.docu-section-alt {
    background: var(--docu-dark);
}

.docu-section-full {
    padding: 80px 24px;
}

/* ============================================
   胶片齿孔卡片
   ============================================ */
.docu-card {
    background: var(--docu-card-bg);
    border: 1px solid var(--docu-border);
    border-radius: var(--docu-radius);
    overflow: hidden;
    transition: transform var(--docu-transition), box-shadow var(--docu-transition);
    position: relative;
}

.docu-card::before,
.docu-card::after {
    content: '';
    position: absolute;
    top: 0;
    width: 12px;
    height: 100%;
    background: repeating-linear-gradient(
        to bottom,
        transparent 0px,
        transparent 6px,
        rgba(212, 175, 55, 0.15) 6px,
        rgba(212, 175, 55, 0.15) 10px,
        transparent 10px,
        transparent 16px
    );
    z-index: 1;
}

.docu-card::before {
    left: 0;
}

.docu-card::after {
    right: 0;
}

.docu-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3), 0 0 15px rgba(212, 175, 55, 0.1);
}

.docu-card-img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    animation: docu-focus 0.8s ease-out;
}

.docu-card-poster {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
}

.docu-card-body {
    padding: 20px 28px;
}

.docu-card-title {
    font-family: var(--docu-font-heading);
    font-size: 1.1rem;
    color: var(--docu-accent);
    margin-bottom: 8px;
}

.docu-card-text {
    font-size: 0.9rem;
    color: var(--docu-text);
    opacity: 0.85;
    line-height: 1.7;
}

.docu-card-meta {
    display: flex;
    gap: 16px;
    margin-top: 12px;
    font-size: 0.8rem;
    color: var(--docu-secondary);
    opacity: 0.8;
}

/* ============================================
   卡片网格
   ============================================ */
.docu-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.docu-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.docu-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

/* ============================================
   IDA推荐 - 桂冠标识
   ============================================ */
.docu-ida-badge {
    position: absolute;
    top: 12px;
    right: 24px;
    background: rgba(212, 175, 55, 0.9);
    color: var(--docu-primary);
    font-family: var(--docu-font-heading);
    font-size: 0.7rem;
    padding: 4px 10px;
    border-radius: 2px;
    z-index: 2;
    letter-spacing: 1px;
    font-weight: 700;
}

/* ============================================
   导演聚焦
   ============================================ */
.docu-director-section {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 50px;
    align-items: center;
}

.docu-director-portrait {
    width: 100%;
    border: 3px solid var(--docu-secondary);
    filter: grayscale(0.3);
    transition: filter var(--docu-transition);
}

.docu-director-portrait:hover {
    filter: grayscale(0);
}

.docu-director-name {
    font-family: var(--docu-font-heading);
    font-size: 1.8rem;
    color: var(--docu-secondary);
    margin-bottom: 8px;
}

.docu-director-signature {
    font-family: var(--docu-font-heading);
    font-style: italic;
    color: var(--docu-text);
    opacity: 0.6;
    margin-bottom: 20px;
}

/* ============================================
   影像地图
   ============================================ */
.docu-map-container {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.docu-map-img {
    width: 100%;
    border: 2px solid var(--docu-border);
}

.docu-map-pin {
    position: absolute;
    width: 28px;
    height: 28px;
    background: var(--docu-secondary);
    border-radius: 50%;
    border: 3px solid var(--docu-accent);
    cursor: pointer;
    transition: transform var(--docu-transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
    color: var(--docu-primary);
    font-weight: 700;
}

.docu-map-pin:hover {
    transform: scale(1.3);
}

.docu-map-pin .docu-pin-tooltip {
    display: none;
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--docu-dark);
    color: var(--docu-text);
    padding: 8px 14px;
    border-radius: var(--docu-radius);
    font-size: 0.8rem;
    white-space: nowrap;
    border: 1px solid var(--docu-border);
}

.docu-map-pin:hover .docu-pin-tooltip {
    display: block;
}

/* ============================================
   按钮
   ============================================ */
.docu-btn {
    display: inline-block;
    padding: 12px 30px;
    background: var(--docu-primary);
    color: var(--docu-secondary);
    border: 2px solid var(--docu-secondary);
    font-family: var(--docu-font-heading);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--docu-transition);
    text-align: center;
}

.docu-btn:hover {
    background: var(--docu-secondary);
    color: var(--docu-primary);
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.3);
}

.docu-btn-sm {
    padding: 8px 20px;
    font-size: 0.8rem;
}

/* ============================================
   页脚
   ============================================ */
#docu-footer {
    background: var(--docu-dark);
    border-top: 2px solid var(--docu-border);
    padding: 60px 24px 0;
}

.docu-footer-grid {
    max-width: var(--docu-max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    padding-bottom: 40px;
}

.docu-footer-col h4 {
    font-family: var(--docu-font-heading);
    font-size: 1.1rem;
    color: var(--docu-secondary);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--docu-border);
}

.docu-footer-col p {
    font-size: 0.9rem;
    color: var(--docu-text);
    margin-bottom: 8px;
    opacity: 0.85;
}

.docu-footer-col a {
    display: block;
    font-size: 0.9rem;
    color: var(--docu-text);
    padding: 4px 0;
    opacity: 0.85;
    transition: all var(--docu-transition);
}

.docu-footer-col a:hover {
    color: var(--docu-secondary);
    opacity: 1;
    padding-left: 6px;
}

.docu-footer-bottom {
    border-top: 1px solid var(--docu-border);
    padding: 24px;
    text-align: center;
    max-width: var(--docu-max-width);
    margin: 0 auto;
}

.docu-footer-bottom p {
    font-size: 0.8rem;
    color: var(--docu-text);
    opacity: 0.7;
    margin-bottom: 6px;
    line-height: 1.8;
}

.docu-footer-bottom a {
    color: var(--docu-secondary);
}

.docu-footer-honor {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(212, 175, 55, 0.1);
    padding: 6px 16px;
    border: 1px solid var(--docu-border);
    border-radius: var(--docu-radius);
    margin: 10px 0;
    font-size: 0.8rem;
    color: var(--docu-secondary);
}

/* ============================================
   放映室 - 筛选排序
   ============================================ */
.docu-filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 40px;
    align-items: center;
    justify-content: center;
}

.docu-filter-bar select {
    background: var(--docu-card-bg);
    color: var(--docu-text);
    border: 1px solid var(--docu-border);
    padding: 10px 16px;
    font-family: var(--docu-font-body);
    font-size: 0.9rem;
    border-radius: var(--docu-radius);
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23D4AF37' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
    min-width: 160px;
}

.docu-filter-bar select:focus {
    outline: none;
    border-color: var(--docu-secondary);
    box-shadow: 0 0 8px rgba(212, 175, 55, 0.2);
}

/* ============================================
   APP下载页
   ============================================ */
.docu-app-hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.docu-app-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.35);
}

.docu-app-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 700px;
    padding: 40px;
    background: rgba(26, 58, 58, 0.85);
    border: 2px solid var(--docu-secondary);
    border-radius: var(--docu-radius);
}

.docu-app-title {
    font-family: var(--docu-font-heading);
    font-size: 2.4rem;
    color: var(--docu-secondary);
    margin-bottom: 16px;
}

.docu-app-subtitle {
    font-size: 1.1rem;
    color: var(--docu-text);
    margin-bottom: 30px;
    line-height: 1.8;
}

.docu-app-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.docu-app-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: var(--docu-dark);
    border: 2px solid var(--docu-secondary);
    border-radius: var(--docu-radius);
    color: var(--docu-text);
    font-size: 0.9rem;
    transition: all var(--docu-transition);
}

.docu-app-badge:hover {
    background: var(--docu-secondary);
    color: var(--docu-primary);
}

.docu-app-badge svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

.docu-qr-code {
    width: 140px;
    height: 140px;
    background: var(--docu-accent);
    margin: 20px auto;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid var(--docu-secondary);
    border-radius: var(--docu-radius);
    color: var(--docu-primary);
    font-size: 0.8rem;
    font-weight: 700;
}

/* ============================================
   内页 Banner
   ============================================ */
.docu-page-banner {
    position: relative;
    height: 45vh;
    min-height: 300px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.docu-page-banner-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.4);
    animation: docu-focus 1s ease-out;
}

.docu-page-banner-content {
    position: relative;
    z-index: 2;
    padding: 0 24px;
}

.docu-page-banner h1 {
    font-size: 2.5rem;
    color: var(--docu-accent);
    text-shadow: 2px 2px 8px rgba(0,0,0,0.5);
    margin-bottom: 12px;
}

.docu-page-banner p {
    font-size: 1.1rem;
    color: var(--docu-text);
    opacity: 0.9;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.5);
}

/* ============================================
   内容区域
   ============================================ */
.docu-content-area {
    max-width: 900px;
    margin: 0 auto;
    padding: 60px 24px;
}

.docu-content-area p {
    margin-bottom: 20px;
    line-height: 1.9;
    font-size: 1rem;
}

.docu-content-area h2 {
    font-size: 1.6rem;
    color: var(--docu-secondary);
    margin: 40px 0 16px;
}

.docu-content-area h3 {
    font-size: 1.3rem;
    color: var(--docu-accent);
    margin: 30px 0 12px;
}

.docu-inline-img {
    width: 100%;
    margin: 30px 0;
    border: 1px solid var(--docu-border);
}

/* ============================================
   探索者手记
   ============================================ */
.docu-log-entry {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 20px;
    padding: 24px 0;
    border-bottom: 1px solid var(--docu-border);
}

.docu-log-date {
    text-align: center;
}

.docu-log-date .docu-log-day {
    font-family: var(--docu-font-heading);
    font-size: 2rem;
    color: var(--docu-secondary);
    line-height: 1;
}

.docu-log-date .docu-log-month {
    font-size: 0.8rem;
    color: var(--docu-text);
    opacity: 0.6;
}

/* ============================================
   纪录片学院
   ============================================ */
.docu-academy-item {
    padding: 20px 0;
    border-bottom: 1px solid var(--docu-border);
}

.docu-academy-item h4 {
    font-family: var(--docu-font-heading);
    color: var(--docu-secondary);
    margin-bottom: 8px;
    font-size: 1rem;
}

.docu-academy-item p {
    font-size: 0.9rem;
    opacity: 0.85;
}

/* ============================================
   加入我们
   ============================================ */
.docu-join-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.docu-join-card {
    background: var(--docu-card-bg);
    border: 1px solid var(--docu-border);
    padding: 30px;
    text-align: center;
    border-radius: var(--docu-radius);
    transition: all var(--docu-transition);
}

.docu-join-card:hover {
    border-color: var(--docu-secondary);
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.15);
}

.docu-join-icon {
    font-size: 2.5rem;
    color: var(--docu-secondary);
    margin-bottom: 16px;
}

.docu-join-card h4 {
    font-family: var(--docu-font-heading);
    color: var(--docu-accent);
    margin-bottom: 12px;
}

/* ============================================
   新片预告
   ============================================ */
.docu-trailer-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--docu-radius);
}

.docu-trailer-card img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    transition: transform var(--docu-transition);
}

.docu-trailer-card:hover img {
    transform: scale(1.05);
}

.docu-trailer-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
}

.docu-trailer-overlay h4 {
    font-family: var(--docu-font-heading);
    color: var(--docu-accent);
    font-size: 1rem;
}

.docu-trailer-overlay p {
    font-size: 0.8rem;
    color: var(--docu-text);
    opacity: 0.8;
}

.docu-play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    background: rgba(212, 175, 55, 0.8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--docu-transition);
}

.docu-play-icon::after {
    content: '';
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 8px 0 8px 16px;
    border-color: transparent transparent transparent var(--docu-primary);
    margin-left: 3px;
}

.docu-trailer-card:hover .docu-play-icon {
    background: var(--docu-secondary);
    transform: translate(-50%, -50%) scale(1.1);
}

/* ============================================
   页面过渡效果
   ============================================ */
.docu-fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.docu-fade-in.docu-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   响应式断点
   ============================================ */

/* 1440px */
@media (max-width: 1440px) {
    .docu-section {
        max-width: 100%;
    }
}

/* 1024px */
@media (max-width: 1024px) {
    .docu-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .docu-grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .docu-director-section {
        grid-template-columns: 250px 1fr;
        gap: 30px;
    }

    .docu-hero-slogan {
        font-size: 2.4rem;
    }

    .docu-join-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 768px */
@media (max-width: 768px) {
    .docu-nav-menu {
        display: none;
    }

    .docu-hamburger {
        display: flex;
    }

    .docu-hero {
        height: 70vh;
        min-height: 400px;
    }

    .docu-hero-slogan {
        font-size: 1.8rem;
    }

    .docu-hero-desc {
        font-size: 1rem;
    }

    .docu-section {
        padding: 50px 16px;
    }

    .docu-section-title {
        font-size: 1.6rem;
    }

    .docu-grid-2,
    .docu-grid-3,
    .docu-grid-4 {
        grid-template-columns: 1fr;
    }

    .docu-director-section {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .docu-director-portrait {
        max-width: 280px;
        margin: 0 auto;
    }

    .docu-footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .docu-page-banner {
        height: 35vh;
        min-height: 250px;
    }

    .docu-page-banner h1 {
        font-size: 1.8rem;
    }

    .docu-join-grid {
        grid-template-columns: 1fr;
    }

    .docu-filter-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .docu-app-title {
        font-size: 1.8rem;
    }
}

/* 360px */
@media (max-width: 360px) {
    html {
        font-size: 14px;
    }

    .docu-hero {
        height: 60vh;
    }

    .docu-hero-slogan {
        font-size: 1.5rem;
    }

    .docu-nav-container {
        padding: 10px 12px;
    }

    .sp-logo-text {
        font-size: 1rem;
    }

    .docu-section {
        padding: 40px 12px;
    }

    .docu-app-content {
        padding: 24px 16px;
    }
}