/* ============================================
   纯白 — 文学刊物宣传页面样式表
   灰白背景 · 樱花色主题（无暗色模式）
   ============================================ */
@font-face {
  font-family: "EB Garamond";
  src: url("./fonts/EBGaramond-VariableFont_wght.ttf") format("truetype-variations");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
   font-family: "Noto Serif SC";
   src: url("./fonts/NotoSerifSC-VariableFont_wght.ttf") format("truetype-variations");
   font-weight: 100 900;
   font-style: normal;
   font-display: swap;
}
/* ---- CSS 变量 ---- */
:root {
    /* 灰白背景体系 */
    --paper: #f4f3f1;
    --paper-soft: #faf9f7;
    --ink: #2a2a2c;
    --ink-light: #555558;
    --ink-muted: #8c8c90;

    /* 樱花色主题 */
    --sakura: #e8a0b0;
    --sakura-deep: #d48496;
    --sakura-soft: #f5d0d8;
    --sakura-pale: rgba(232, 160, 176, 0.12);
    --sakura-glow: rgba(232, 160, 176, 0.28);

    --border: rgba(42, 42, 44, 0.08);
    --border-soft: rgba(42, 42, 44, 0.05);

    --glass-bg: rgba(250, 249, 247, 0.72);
    --glass-bg-scrolled: rgba(244, 243, 241, 0.88);
    --glass-border: rgba(255, 255, 255, 0.65);
    --glass-blur: 22px;

    --max-width: 900px;
    --font-serif: "EB Garamond", Georgia, "Noto Serif SC", "Noto Serif CJK SC", "Songti SC", "SimSun", "STSong", serif;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", "Noto Sans CJK SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --header-height: 3.5rem;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

section {
    scroll-margin-top: calc(var(--header-height) + 1rem);
}

body {
    font-family: var(--font-serif);
    color: var(--ink);
    background-color: var(--paper);
    line-height: 1.8;
    text-align: justify;
    background-image:
        radial-gradient(ellipse at 15% 20%, rgba(232, 160, 176, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 85% 75%, rgba(200, 190, 185, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(255, 255, 255, 0.4) 0%, transparent 70%);
}

img, svg {
    max-width: 100%;
    height: auto;
}

a {
    color: inherit;
}

/* ---- 通用容器 ---- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ---- 页眉（毛玻璃导航） ---- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(160%);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(160%);
    border-bottom: 1px solid var(--glass-border);
    box-shadow:
        0 4px 24px rgba(42, 42, 44, 0.04),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    transition: background 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), border-color 0.3s ease;
}

.header.scrolled {
    background: var(--glass-bg-scrolled);
    border-bottom-color: rgba(42, 42, 44, 0.1);
    box-shadow:
        0 8px 28px rgba(42, 42, 44, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--ink);
    text-decoration: none;
    letter-spacing: 0.08em;
    transition: color 0.2s ease, opacity 0.2s ease;
}

.logo:hover {
    color: var(--sakura-deep);
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    color: var(--ink-light);
    text-decoration: none;
    letter-spacing: 0.02em;
    transition: color 0.2s ease;
    position: relative;
}

.nav-link:hover,
.nav-link:focus-visible {
    color: var(--sakura-deep);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 1.5px;
    background: var(--sakura);
    border-radius: 1px;
    transition: width 0.28s var(--ease-out);
}

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

/* 汉堡菜单 */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 2.5rem;
    height: 2.5rem;
    background: none;
    border: none;
    cursor: pointer;
    gap: 5px;
    border-radius: 6px;
    transition: background-color 0.2s ease;
}

.menu-toggle:hover,
.menu-toggle:focus-visible {
    background-color: var(--sakura-pale);
}

.menu-toggle span {
    display: block;
    width: 1.25rem;
    height: 1.5px;
    background: var(--ink);
    transition: transform 0.3s var(--ease-out), opacity 0.25s ease, background 0.2s ease;
}

.menu-toggle.active span {
    background: var(--sakura-deep);
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}

/* ---- 英雄区 ---- */
.hero {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 1.5rem 4rem;
}

.hero-inner {
    max-width: 620px;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2.75rem, 8vw, 4.25rem);
    font-weight: 700;
    color: var(--ink);
    letter-spacing: 0.12em;
    margin-bottom: 1rem;
    line-height: 1.15;
}

.hero-subtitle {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--ink-light);
    margin-bottom: 0.5rem;
    letter-spacing: 0.04em;
}

.hero-meta {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    color: var(--ink-muted);
    margin-bottom: 2.75rem;
    letter-spacing: 0.02em;
}

.hero-quote {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 2rem 0.5rem;
    margin: 0;
    position: relative;
}

.hero-quote::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 48px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--sakura), transparent);
}

.hero-quote p {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    color: var(--ink-light);
    line-height: 1.85;
    letter-spacing: 0.02em;
    text-align: center;
}

.hero-quote p::before {
    content: '「';
    color: var(--sakura);
    font-size: 1.4rem;
    margin-right: 0.2rem;
}

.hero-quote p::after {
    content: '」';
    color: var(--sakura);
    font-size: 1.4rem;
    margin-left: 0.2rem;
}

/* ---- 区块标题 ---- */
.section-title {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--sakura-deep);
    text-transform: uppercase;
    letter-spacing: 0.16em;
    margin-bottom: 2rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

/* ---- 简介区 ---- */
.about {
    padding: 5rem 0;
}

.about-text {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    line-height: 2;
    color: var(--ink);
    max-width: 680px;
    margin-bottom: 3rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.stat-label {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    color: var(--ink-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.stat-value {
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    color: var(--ink-light);
    line-height: 1.6;
}

/* ---- 栏目预览 ---- */
.columns {
    padding: 5rem 0;
    background: linear-gradient(to bottom, transparent, var(--sakura-pale), transparent);
}

.columns-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.column-card {
    background: var(--paper-soft);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.75rem 1.5rem;
    transition:
        box-shadow 0.3s var(--ease-out),
        transform 0.3s var(--ease-out),
        border-color 0.25s ease;
}

.column-card:hover {
    box-shadow: 0 12px 36px rgba(42, 42, 44, 0.06), 0 0 0 1px var(--sakura-glow);
    transform: translateY(-4px);
    border-color: rgba(232, 160, 176, 0.35);
}

.column-name {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 0.45rem;
    letter-spacing: 0.03em;
}

.column-desc {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    color: var(--ink-muted);
    line-height: 1.65;
}

/* ---- 下载区 ---- */
.downloads {
    padding: 5rem 0;
}

.downloads-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.download-card {
    background: var(--paper-soft);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 2rem 1.75rem;
    transition:
        box-shadow 0.3s var(--ease-out),
        transform 0.3s var(--ease-out),
        border-color 0.25s ease;
}

.download-card:hover {
    box-shadow: 0 12px 36px rgba(42, 42, 44, 0.06), 0 0 0 1px var(--sakura-glow);
    transform: translateY(-3px);
    border-color: rgba(232, 160, 176, 0.3);
}

.download-name {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 0.35rem;
    letter-spacing: 0.03em;
}

.download-desc {
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    color: var(--ink-muted);
    margin-bottom: 1.25rem;
}

.download-list {
    list-style: none;
    padding: 0;
}

.download-list li {
    margin-bottom: 0.5rem;
}

.download-list a {
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    color: var(--sakura-deep);
    text-decoration: none;
    border-bottom: 1px dashed rgba(212, 132, 150, 0.45);
    transition: color 0.2s ease, border-color 0.2s ease, border-style 0.2s ease;
}

.download-list a:hover,
.download-list a:focus-visible {
    color: var(--sakura);
    border-bottom-style: solid;
    border-bottom-color: var(--sakura);
}

/* ---- 分发方式 ---- */
.distribution {
    padding: 5rem 0;
}

.distribution-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.distribution-item {
    text-align: center;
    padding: 2rem 1.25rem;
    border-radius: 10px;
    transition: background-color 0.25s ease;
}

.distribution-item:hover {
    background-color: var(--sakura-pale);
}

.distribution-icon {
    font-size: 1.35rem;
    color: var(--sakura);
    margin-bottom: 1rem;
    line-height: 1;
}

.distribution-title {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 0.65rem;
    letter-spacing: 0.05em;
}

.distribution-text {
    font-family: var(--font-serif);
    font-size: 0.9375rem;
    color: var(--ink-light);
    line-height: 1.7;
}

/* ---- 支持入口 ---- */
.support {
    padding: 5rem 0;
    background: linear-gradient(to bottom, transparent, var(--sakura-pale), transparent);
}

.support-content {
    max-width: 680px;
}

.support-text {
    font-family: var(--font-serif);
    font-size: 1.0625rem;
    line-height: 1.9;
    color: var(--ink-light);
    margin-bottom: 2rem;
}

.support-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.9rem 2rem;
    background: var(--sakura);
    color: #fff;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    border: none;
    border-radius: 999px;
    cursor: pointer;
    transition:
        background 0.25s ease,
        transform 0.2s var(--ease-out),
        box-shadow 0.25s ease;
}

.support-btn:hover {
    background: var(--sakura-deep);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px var(--sakura-glow);
}

.support-btn:active {
    transform: translateY(0);
}

.support-btn:focus-visible {
    outline: 2px solid var(--sakura-deep);
    outline-offset: 3px;
}

.btn-arrow {
    font-size: 1rem;
    transition: transform 0.2s var(--ease-out);
}

.support-btn:hover .btn-arrow {
    transform: translateX(5px);
}

/* ---- 致谢与联系 ---- */
.thanks,
.contact {
    padding: 5rem 0;
}

.contact {
    padding-bottom: 3.5rem;
}

.thanks-text,
.contact-text {
    font-family: var(--font-serif);
    font-size: 1.0625rem;
    line-height: 1.9;
    color: var(--ink-light);
    max-width: 680px;
}

/* ---- 页脚 ---- */
.footer {
    padding: 3rem 0 2.25rem;
    border-top: 1px solid var(--border);
    background: var(--paper-soft);
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.footer-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.footer-copyright {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    color: var(--ink);
    font-weight: 500;
}

.footer-nav {
    display: flex;
    gap: 1.5rem;
}

.footer-link {
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    color: var(--ink-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-link:hover,
.footer-link:focus-visible {
    color: var(--sakura-deep);
}

.footer-note {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    color: var(--ink-muted);
    text-align: center;
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
}

.footer-license {
    font-family: var(--font-sans);
    font-size: 0.6875rem;
    color: var(--ink-muted);
    text-align: center;
    opacity: 0.75;
}

/* ---- 弹窗 ---- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(42, 42, 44, 0.38);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    padding: 1.5rem;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--paper-soft);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 2rem;
    max-width: 420px;
    width: 100%;
    position: relative;
    box-shadow: 0 24px 64px rgba(42, 42, 44, 0.12), 0 0 0 1px var(--sakura-pale);
    transform: scale(0.96) translateY(12px);
    transition: transform 0.32s var(--ease-out);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 0.85rem;
    right: 0.85rem;
    width: 2.25rem;
    height: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--ink-muted);
    cursor: pointer;
    line-height: 1;
    border-radius: 50%;
    transition: color 0.2s, background-color 0.2s;
}

.modal-close:hover,
.modal-close:focus-visible {
    color: var(--sakura-deep);
    background-color: var(--sakura-pale);
}

.modal-title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--ink);
    margin-bottom: 1rem;
    letter-spacing: 0.03em;
    padding-right: 2rem;
}

.modal-body p {
    font-family: var(--font-serif);
    font-size: 0.9375rem;
    line-height: 1.8;
    color: var(--ink-light);
    margin-bottom: 0.75rem;
}

.modal-note {
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    color: var(--ink-muted);
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

/* ---- 焦点可见性 ---- */
:focus-visible {
    outline: 2px solid var(--sakura);
    outline-offset: 3px;
}

/* ============================================
   响应式设计
   ============================================ */

@media (max-width: 768px) {
    .columns-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .downloads-grid {
        grid-template-columns: 1fr;
    }

    .distribution-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .footer-main {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: rgba(250, 249, 247, 0.96);
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        flex-direction: column;
        padding: 1.5rem;
        gap: 1.25rem;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 12px 32px rgba(42, 42, 44, 0.06);
        transform: translateY(-8px);
        opacity: 0;
        visibility: hidden;
        transition:
            transform 0.3s var(--ease-out),
            opacity 0.3s ease,
            visibility 0.3s ease;
    }

    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .menu-toggle {
        display: flex;
    }

    .hero-subtitle {
        font-size: 1.0625rem;
    }

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

    .section-title {
        margin-bottom: 1.5rem;
    }

    .about,
    .columns,
    .downloads,
    .distribution,
    .support,
    .thanks,
    .contact {
        padding: 3.25rem 0;
    }

    .hero {
        min-height: auto;
        padding: 6rem 1rem 3.5rem;
    }

    .distribution-item {
        padding: 1.35rem 1rem;
    }

    .column-card,
    .download-card {
        padding: 1.5rem 1.25rem;
    }
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}