/* ============================================================
   雷門 · 金缮 KINTSUGI  (2026.10)
   青白瓷的底，一道被雷劈开、又用金子补上的裂缝。
   竖排标题，轻宋体，留白。
   ============================================================ */

@font-face {
    font-family: 'Gate Serif';
    src: url('../assets/fonts/serif-300.woff2') format('woff2');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Gate Serif';
    src: url('../assets/fonts/serif-500.woff2') format('woff2');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

:root {
    /* 白瓷 · 青磁 · 金 */
    --bg: #ECEFEA;
    --surface: #E3E8E2;
    --surface-2: #D8DFD8;
    --ink: #1C2420;
    --ink-soft: #3A4540;
    --muted: #66726B;
    --celadon: #8AA596;
    --celadon-deep: #5E7D6D;
    --gold: #A88435;
    --gold-light: #D8B866;
    --gold-deep: #7D5F1F;
    --line: rgba(28, 36, 32, 0.12);
    --line-strong: rgba(28, 36, 32, 0.24);
    --on-ink: #ECEFEA;

    --f-serif: 'Gate Serif', 'Songti SC', 'Noto Serif CJK SC', 'Source Han Serif SC', 'STSong', 'Hiragino Mincho ProN', serif;
    --f-sans: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;

    --gutter: clamp(20px, 5vw, 80px);
    --nav-h: 76px;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);

    /* main.js / games.js 内联用到的旧变量名 */
    --bg-secondary: var(--bg);
    --text-primary: var(--ink);
    --text-tertiary: var(--muted);
    --border-color: var(--line-strong);
    --accent-primary: var(--gold);
    --shadow: rgba(28, 36, 32, 0.12);

    color-scheme: light;
}

/* 天目：深色釉 */
[data-theme="dark"] {
    --bg: #19211E;
    --surface: #212A26;
    --surface-2: #2A3530;
    --ink: #E3E8E2;
    --ink-soft: #C3CBC5;
    --muted: #8E9A93;
    --celadon: #7E9C8C;
    --celadon-deep: #9DB8A9;
    --gold: #C9A456;
    --gold-light: #E6C980;
    --gold-deep: #9A7A35;
    --line: rgba(227, 232, 226, 0.12);
    --line-strong: rgba(227, 232, 226, 0.24);
    --on-ink: #19211E;
    --shadow: rgba(0, 0, 0, 0.35);
    color-scheme: dark;
}

*,
*::before,
*::after { box-sizing: border-box; }

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

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--f-sans);
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
    transition: background-color 0.4s ease, color 0.4s ease;
}

h1, h2, h3, h4 { margin: 0; font-family: var(--f-serif); font-weight: 500; line-height: 1.25; }
p { margin: 0; }
a { color: inherit; }
img { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; }
::selection { background: var(--gold-light); color: #1C2420; }

:focus-visible { outline: 1.5px solid var(--gold); outline-offset: 4px; }

.flash { display: none; }

/* ---------- 骨架 ---------- */
.main-wrapper { min-height: 100vh; display: flex; flex-direction: column; transition: margin-right 0.4s var(--ease); }
.container { flex: 1; }
.page { display: none; }
.page.active { display: block; animation: page-in 0.6s var(--ease); }

@keyframes page-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ---------- 导航 ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--nav-h);
    display: flex;
    align-items: center;
    gap: 32px;
    padding: 0 var(--gutter);
    transition: background-color 0.4s ease, height 0.4s var(--ease), box-shadow 0.4s ease;
}

.navbar.is-stuck {
    height: 60px;
    background: color-mix(in srgb, var(--bg) 86%, transparent);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 var(--line);
}

.logo {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 0;
    border: 0;
    background: none;
    cursor: pointer;
}

.logo-text { font-family: var(--f-serif); font-weight: 500; font-size: 19px; letter-spacing: 0.12em; }
.logo-domain { font-size: 12px; letter-spacing: 0.08em; color: var(--muted); }

.nav-links { display: flex; gap: 2px; margin: 0 0 0 auto; padding: 0; list-style: none; }

.nav-links a {
    position: relative;
    display: block;
    padding: 6px 12px;
    font-size: 14px;
    letter-spacing: 0.08em;
    text-decoration: none;
    color: var(--muted);
    transition: color 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active { color: var(--ink); }

.nav-links a.active::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -2px;
    width: 4px;
    height: 4px;
    margin-left: -2px;
    border-radius: 50%;
    background: var(--gold);
}

.nav-actions { display: flex; align-items: center; gap: 4px; }

.language-btn,
.theme-toggle,
.admin-btn {
    height: 32px;
    min-width: 32px;
    padding: 0 10px;
    border: 0;
    background: transparent;
    color: var(--muted);
    font-size: 13px;
    letter-spacing: 0.06em;
    cursor: pointer;
    transition: color 0.3s ease;
}

.theme-toggle { font-family: var(--f-serif); font-size: 15px; }

.language-btn:hover,
.theme-toggle:hover,
.admin-btn:hover { color: var(--gold); }

.hamburger { display: none; width: 36px; height: 32px; flex-direction: column; justify-content: center; gap: 6px; padding: 0 8px; cursor: pointer; }
.hamburger span { display: block; height: 1px; background: var(--ink); transition: transform 0.4s var(--ease), opacity 0.3s ease; }
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   首屏：竖排标题 + 金缮裂缝
   ============================================================ */
.hero {
    position: relative;
    min-height: max(100svh, 660px);
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 48px;
    padding: calc(var(--nav-h) + 48px) var(--gutter) clamp(56px, 9vh, 96px);
    overflow: hidden;
}

.hero::before {
    /* 釉面上一点极淡的光 */
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(48% 42% at 76% 34%, color-mix(in srgb, var(--celadon) 20%, transparent), transparent 100%);
}

.seam {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    overflow: visible;
    pointer-events: none;
    z-index: 0;
}

.seam .seam-glow { fill: none; stroke: var(--gold-light); stroke-width: 7; stroke-linecap: round; stroke-linejoin: round; opacity: 0.18; filter: blur(3px); }
.seam .seam-line { fill: none; stroke: url(#gold); stroke-linecap: round; stroke-linejoin: round; }
.seam .seam-glint { fill: none; stroke: url(#glint); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; mix-blend-mode: screen; }

.hero-title-block {
    position: relative;
    z-index: 1;
    grid-column: 2;
    grid-row: 1;
    align-self: start;
    display: flex;
    flex-direction: row-reverse;
    align-items: flex-start;
    gap: clamp(18px, 2.4vw, 36px);
    padding-top: clamp(8px, 4vh, 48px);
}

.hero-title {
    writing-mode: vertical-rl;
    font-family: var(--f-serif);
    font-weight: 300;
    font-size: clamp(56px, 7.4vw, 124px);
    line-height: 1.1;
    letter-spacing: 0.14em;
    color: var(--ink);
    font-feature-settings: 'vert' 1;
}

.hero-eyebrow {
    writing-mode: vertical-rl;
    margin-top: clamp(80px, 12vh, 160px);
    font-family: var(--f-serif);
    font-weight: 300;
    font-size: clamp(14px, 1.1vw, 17px);
    letter-spacing: 0.32em;
    color: var(--muted);
}

html[data-language="en"] .hero-title-block { flex-direction: column; align-items: flex-end; gap: 16px; text-align: right; max-width: 12em; align-self: start; padding-top: 12vh; }
html[data-language="en"] .hero-title { writing-mode: horizontal-tb; font-size: clamp(48px, 6.4vw, 104px); letter-spacing: 0; line-height: 1.02; }
html[data-language="en"] .hero-eyebrow { writing-mode: horizontal-tb; margin-top: 0; letter-spacing: 0.04em; font-size: 16px; }

.hero-intro {
    position: relative;
    z-index: 1;
    grid-column: 1;
    grid-row: 1;
    max-width: 30em;
}

.hero-motto {
    display: flex;
    align-items: center;
    gap: 14px;
    font-family: var(--f-serif);
    font-weight: 500;
    font-size: 15px;
    letter-spacing: 0.24em;
    color: var(--gold);
    margin-bottom: 28px;
}

.hero-motto::before { content: ''; width: 32px; height: 1px; background: var(--gold); }

html[data-language="en"] .hero-motto { letter-spacing: 0.04em; }

.hero-body { font-size: 16px; line-height: 2; color: var(--muted); }
.hero-body span:first-child { display: block; color: var(--ink); font-family: var(--f-serif); font-weight: 500; font-size: clamp(19px, 1.6vw, 23px); line-height: 1.7; margin-bottom: 6px; letter-spacing: 0.04em; }

.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 28px; margin-top: 40px; }

/* 首屏是 LCP 元素：改用纯 CSS 动画自行入场。
   原先等 main.js(18KB gzip) 执行后加 .is-visible，再走 0.3s 延迟 + 1.4s 淡入，
   LCP 被死锁在 1.8s 左右，网络再快也降不下来。 */
.reveal-on-load { animation: reveal-rise 0.7s var(--ease) both; }
.hero-intro.reveal-on-load { animation-delay: 0.32s; }
@keyframes reveal-rise {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: none; }
}
.reveal-on-load.is-visible { opacity: 1; transform: none; }

/* ---------- 按钮 ---------- */
.btn-ink {
    display: inline-flex;
    align-items: center;
    min-height: 48px;
    padding: 0 30px;
    border: 1px solid var(--ink);
    background: var(--ink);
    color: var(--on-ink);
    font-size: 14px;
    letter-spacing: 0.18em;
    cursor: pointer;
    transition: background-color 0.4s var(--ease), border-color 0.4s var(--ease), color 0.4s var(--ease);
}

.btn-ink:hover { background: var(--gold-deep); border-color: var(--gold-deep); color: #F6F2E6; }

.btn-text {
    position: relative;
    padding: 4px 0;
    border: 0;
    background: none;
    color: var(--ink);
    font-size: 14px;
    letter-spacing: 0.14em;
    cursor: pointer;
}

.btn-text::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 1px;
    background: var(--line-strong);
}

.btn-text::before {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    z-index: 1;
    width: 100%;
    height: 1px;
    background: var(--gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s var(--ease);
}

.btn-text:hover::before,
.btn-text:focus-visible::before { transform: scaleX(1); }

html[data-language="en"] .btn-ink,
html[data-language="en"] .btn-text { letter-spacing: 0.04em; }

/* ============================================================
   区块
   ============================================================ */
.rooms,
.works,
.arcade { padding: clamp(96px, 13vw, 180px) var(--gutter) 0; }

.section-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px 32px;
    margin-bottom: clamp(40px, 5vw, 64px);
    scroll-margin-top: 100px;
}

.section-head h2 {
    font-weight: 300;
    font-size: clamp(32px, 3.6vw, 52px);
    letter-spacing: 0.08em;
    line-height: 1.3;
}

html[data-language="en"] .section-head h2 { letter-spacing: 0; }

.section-head p { flex-basis: 100%; max-width: 32em; color: var(--muted); font-size: 15px; letter-spacing: 0.04em; }

/* ---------- 七个房间 ---------- */
.rooms-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(32px, 6vw, 96px);
}

.room {
    position: relative;
    display: grid;
    grid-template-columns: 64px 1fr;
    align-items: center;
    gap: 24px;
    width: 100%;
    padding: 26px 0;
    border: 0;
    border-top: 1px solid var(--line);
    background: transparent;
    text-align: left;
    cursor: pointer;
}

.room::after {
    content: '';
    position: absolute;
    left: 0;
    top: -1px;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, var(--gold-deep), var(--gold-light) 50%, var(--gold));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.8s var(--ease);
}

.room:hover::after,
.room:focus-visible::after { transform: scaleX(1); }

.room-glyph {
    font-family: var(--f-serif);
    font-weight: 300;
    font-size: 46px;
    line-height: 1;
    color: var(--celadon-deep);
    transition: color 0.5s ease;
}

.room:hover .room-glyph,
.room:focus-visible .room-glyph { color: var(--gold); }

.room-text { display: flex; flex-direction: column; gap: 2px; }
.room-title { font-family: var(--f-serif); font-weight: 500; font-size: 19px; letter-spacing: 0.12em; }
html[data-language="en"] .room-title { letter-spacing: 0.02em; }
.room-desc { font-size: 14px; color: var(--muted); }

/* ---------- 作品 ---------- */
.plates {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(24px, 4vw, 64px);
    align-items: end;
}

.plate { display: flex; flex-direction: column; gap: 20px; text-decoration: none; }
.plate:nth-child(2) { margin-bottom: clamp(40px, 8vw, 120px); }

.plate-art {
    display: block;
    overflow: hidden;
    background: #0E1512;
    aspect-ratio: 3 / 2;
}

.plate:nth-child(2) .plate-art { aspect-ratio: 4 / 5; }
.plate-art img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.6s var(--ease), opacity 0.6s ease; opacity: 0.92; }
.plate:hover .plate-art img { transform: scale(1.03); opacity: 1; }

.plate-caption { display: flex; flex-direction: column; gap: 4px; }
.plate-title { font-family: var(--f-serif); font-weight: 500; font-size: 20px; letter-spacing: 0.08em; }
html[data-language="en"] .plate-title { letter-spacing: 0; }
.plate-sub { font-size: 13px; color: var(--muted); letter-spacing: 0.04em; }

/* ---------- 闲来一局：一行字 ---------- */
.arcade { text-align: center; }
.arcade .section-head { flex-direction: column; align-items: center; }
.arcade .section-head p { flex-basis: auto; }

.verse {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    max-width: 1180px;
    margin: 0 auto;
}

.verse-char {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    padding: 20px 0 8px;
    border: 0;
    background: none;
    cursor: pointer;
}

.verse-glyph {
    font-family: var(--f-serif);
    font-weight: 300;
    font-size: clamp(36px, 4.6vw, 68px);
    line-height: 1;
    color: var(--ink);
    transition: color 0.5s ease, transform 0.8s var(--ease);
}

.verse-name {
    font-size: 12px;
    letter-spacing: 0.1em;
    color: var(--muted);
    white-space: nowrap;
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity 0.4s ease, transform 0.6s var(--ease);
}

.verse-char:hover .verse-glyph,
.verse-char:focus-visible .verse-glyph { color: var(--gold); transform: translateY(-6px); }
.verse-char:hover .verse-name,
.verse-char:focus-visible .verse-name { opacity: 1; transform: none; }

.arcade-more { margin-top: 40px; }

/* ---------- 结尾 ---------- */
.closing {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
    padding: clamp(120px, 14vw, 200px) var(--gutter) clamp(120px, 14vw, 180px);
    text-align: center;
}

.closing-seam { width: 120px; height: 150px; overflow: visible; }

.closing-line {
    display: flex;
    flex-direction: row-reverse;
    gap: 0.5em;
    font-family: var(--f-serif);
    font-weight: 300;
    font-size: clamp(32px, 3.8vw, 56px);
    letter-spacing: 0.28em;
    line-height: 1;
}

.closing-line span { writing-mode: vertical-rl; }
.closing-line span:last-child { margin-top: 2em; }

html[data-language="en"] .closing-line { flex-direction: column; gap: 0; letter-spacing: 0; line-height: 1.3; font-size: clamp(32px, 4.4vw, 64px); }
html[data-language="en"] .closing-line span { writing-mode: horizontal-tb; }
html[data-language="en"] .closing-line span:last-child { margin-top: 0; }

/* ---------- 页脚 ---------- */
.footer { padding: 32px var(--gutter) 40px; border-top: 1px solid var(--line); }
.footer p { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; font-size: 13px; letter-spacing: 0.06em; color: var(--muted); }

/* ============================================================
   子页面
   ============================================================ */
.page:not(#home-page) { padding-bottom: clamp(80px, 10vw, 140px); }

.page-head {
    display: flex;
    align-items: flex-end;
    gap: clamp(20px, 4vw, 56px);
    padding: calc(var(--nav-h) + clamp(56px, 10vh, 120px)) var(--gutter) clamp(40px, 5vw, 64px);
    margin-bottom: clamp(32px, 4vw, 56px);
    border-bottom: 1px solid var(--line);
}

.page-glyph {
    font-family: var(--f-serif);
    font-weight: 300;
    font-size: clamp(96px, 12vw, 176px);
    line-height: 0.82;
    color: var(--celadon-deep);
    flex-shrink: 0;
}

.page-head h1 { font-weight: 300; font-size: clamp(34px, 4.4vw, 64px); letter-spacing: 0.1em; line-height: 1.2; }
html[data-language="en"] .page-head h1 { letter-spacing: 0; }
.page-head p { margin-top: 12px; color: var(--muted); font-size: 15px; letter-spacing: 0.04em; max-width: 32em; }

.games-grid,
.homework-grid,
.blog-container,
.resources-container,
.guestbook-container,
.about-container,
.file-login-container,
.file-manager,
.leaderboard { margin-left: var(--gutter); margin-right: var(--gutter); }

/* 游戏 / 作品 */
.games-grid,
.homework-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
    column-gap: clamp(24px, 4vw, 64px);
}

.game-card,
.homework-card {
    position: relative;
    display: grid;
    grid-template-columns: 56px 1fr;
    align-items: center;
    gap: 20px;
    padding: 24px 0;
    border-top: 1px solid var(--line);
    text-decoration: none;
    cursor: pointer;
}

.game-card::after,
.homework-card::after {
    content: '';
    position: absolute;
    left: 0;
    top: -1px;
    width: 100%;
    height: 1px;
    background: var(--gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.8s var(--ease);
}

.game-card:hover::after,
.homework-card:hover::after,
.game-card:focus-visible::after,
.homework-card:focus-visible::after { transform: scaleX(1); }

.game-icon,
.homework-icon {
    font-family: var(--f-serif);
    font-weight: 300;
    font-size: 44px;
    line-height: 1;
    text-align: center;
    color: var(--celadon-deep);
    transition: color 0.5s ease;
}

.game-card:hover .game-icon,
.homework-card:hover .homework-icon { color: var(--gold); }

.game-title,
.homework-title { font-family: var(--f-serif); font-weight: 500; font-size: 18px; letter-spacing: 0.08em; }
.game-desc,
.homework-desc { font-size: 14px; color: var(--muted); line-height: 1.7; margin-top: 2px; }
.game-btn,
.homework-btn { display: none; }

.leaderboard { margin-top: clamp(64px, 8vw, 112px); }
.leaderboard h3 { font-weight: 300; font-size: 28px; letter-spacing: 0.1em; margin-bottom: 16px; }
.leaderboard h4 { font-family: var(--f-serif); font-weight: 500; color: var(--gold) !important; }
.leaderboard-item { display: grid; grid-template-columns: 40px 1fr auto; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.leaderboard-rank { font-family: var(--f-serif); color: var(--gold); }
.leaderboard-score { font-variant-numeric: tabular-nums; }
.game-leaderboard-section + .game-leaderboard-section { margin-top: 32px; }

/* 随笔 */
.blog-header { display: none; }
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 440px), 1fr)); column-gap: clamp(24px, 4vw, 64px); }

.blog-card {
    display: grid;
    grid-template-columns: 72px 1fr;
    gap: 24px;
    padding: 32px 0;
    border-top: 1px solid var(--line);
    text-decoration: none;
}

.blog-image { font-family: var(--f-serif); font-weight: 300; font-size: 56px; line-height: 1; color: var(--celadon-deep); transition: color 0.5s ease; }
.blog-card:hover .blog-image { color: var(--gold); }
.blog-title { font-size: 21px; letter-spacing: 0.06em; margin-bottom: 8px; }
.blog-excerpt { color: var(--muted); font-size: 15px; }
.blog-meta { margin-top: 14px; font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }
.blog-tags { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 4px; }
.blog-tag { font-size: 13px; color: var(--gold); }

.blog-article { max-width: 640px; }
.blog-article h2 { font-weight: 300; font-size: clamp(30px, 3.6vw, 46px); letter-spacing: 0.06em; margin: 32px 0 8px; }
.blog-article time { color: var(--muted); font-size: 14px; }
.blog-article p { margin-top: 28px; font-family: var(--f-serif); font-size: 18px; line-height: 2; }
.blog-article > a { font-size: 14px; color: var(--gold); text-decoration: none; letter-spacing: 0.1em; }

/* 收藏 */
.resources-categories { display: flex; flex-wrap: wrap; gap: 4px 20px; margin-bottom: 32px; }

.category-btn {
    padding: 6px 0;
    border: 0;
    border-bottom: 1px solid transparent;
    background: transparent;
    color: var(--muted);
    font-size: 14px;
    letter-spacing: 0.08em;
    cursor: pointer;
    transition: color 0.3s ease, border-color 0.3s ease;
}

.category-btn:hover { color: var(--ink); }
.category-btn.active { color: var(--ink); border-bottom-color: var(--gold); }

.resources-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr)); column-gap: clamp(24px, 4vw, 56px); }
.resource-card { padding: 28px 0; border-top: 1px solid var(--line); }
.resource-category { font-size: 12px; letter-spacing: 0.12em; color: var(--gold); }
.resource-title { font-size: 21px; letter-spacing: 0.04em; margin: 8px 0 4px; }
.resource-desc { color: var(--muted); font-size: 14px; }
.resource-url { display: inline-block; margin-top: 12px; font-size: 12px; color: var(--muted); word-break: break-all; text-decoration: none; border-bottom: 1px solid var(--line-strong); }
.resource-url:hover { color: var(--ink); border-bottom-color: var(--gold); }

/* 关于 */
.about-card { display: grid; grid-template-columns: auto 1fr; column-gap: clamp(32px, 5vw, 72px); align-items: start; max-width: 920px; }

.about-avatar {
    grid-row: span 4;
    display: grid;
    place-items: center;
    width: clamp(120px, 14vw, 180px);
    aspect-ratio: 1;
    border: 1px solid var(--line-strong);
    border-radius: 50%;
    font-family: var(--f-serif);
    font-weight: 300;
    font-size: clamp(56px, 7vw, 88px);
    line-height: 1;
    color: var(--gold);
}

.about-name { font-weight: 300; font-size: clamp(32px, 3.6vw, 48px); letter-spacing: 0.12em; }
.about-bio { margin-top: 14px; color: var(--muted); font-size: 16px; line-height: 2; }
.about-stats { display: flex; gap: clamp(32px, 5vw, 72px); margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--line); }
.stat-number { font-family: var(--f-serif); font-weight: 300; font-size: clamp(32px, 3.6vw, 44px); line-height: 1; font-variant-numeric: tabular-nums; }
.stat-label { font-size: 13px; color: var(--muted); margin-top: 8px; letter-spacing: 0.06em; }
.social-links { display: flex; gap: 10px; margin-top: 32px; }

.social-link {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--line-strong);
    border-radius: 50%;
    font-family: var(--f-serif);
    font-size: 17px;
    text-decoration: none;
    transition: border-color 0.4s ease, color 0.4s ease;
}

.social-link:hover { border-color: var(--gold); color: var(--gold); }

/* 表单 */
.guestbook-container { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
.guestbook-form { position: sticky; top: 96px; }
.guestbook-form h3 { font-weight: 300; font-size: 26px; letter-spacing: 0.1em; margin-bottom: 24px; }

.form-group { margin-bottom: 22px; }
.form-group label { display: block; font-size: 13px; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 6px; }

.form-group input,
.form-group textarea,
.reply-form input,
.reply-form textarea,
.file-login-box input {
    width: 100%;
    padding: 10px 0;
    border: 0;
    border-bottom: 1px solid var(--line-strong);
    border-radius: 0;
    background: transparent;
    color: var(--ink);
    font: inherit;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-group textarea,
.reply-form textarea { min-height: 120px; resize: vertical; }

.form-group input:focus,
.form-group textarea:focus,
.reply-form input:focus,
.reply-form textarea:focus,
.file-login-box input:focus,
.dictionary-search input:focus { outline: none; border-color: var(--gold); }

::placeholder { color: var(--muted); opacity: 0.7; }

.btn-submit,
.file-login-box button,
.file-actions-bar button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 28px;
    border: 1px solid var(--ink);
    background: var(--ink);
    color: var(--on-ink);
    font-size: 14px;
    letter-spacing: 0.14em;
    cursor: pointer;
    transition: background-color 0.4s var(--ease), border-color 0.4s var(--ease);
}

.btn-submit:hover,
.file-login-box button:hover,
.file-actions-bar button:hover { background: var(--gold-deep); border-color: var(--gold-deep); color: #F6F2E6; }

.reply-form .btn-submit + .btn-submit { margin-left: 8px; background: transparent !important; color: var(--ink); border-color: var(--line-strong); }

.success-message,
.error-message { padding: 10px 0 10px 14px; margin-bottom: 18px; font-size: 14px; }
.success-message { border-left: 2px solid var(--gold); }
.error-message { border-left: 2px solid #B4553F; color: #B4553F; }

.messages-list { display: flex; flex-direction: column; }
.message-card { padding: 28px 0; border-top: 1px solid var(--line); }
.message-header { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.message-author { font-family: var(--f-serif); font-weight: 500; font-size: 17px; letter-spacing: 0.04em; }
.message-time,
.reply-time { font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; letter-spacing: 0.04em; }
.message-content { margin-top: 10px; font-size: 15px; line-height: 1.9; white-space: pre-wrap; word-break: break-word; }
.message-actions { display: flex; gap: 18px; margin-top: 12px; }

.message-actions button,
.file-actions button {
    padding: 2px 0;
    border: 0;
    border-bottom: 1px solid transparent;
    background: transparent;
    color: var(--muted);
    font-size: 13px;
    letter-spacing: 0.06em;
    cursor: pointer;
    transition: color 0.3s ease, border-color 0.3s ease;
}

.message-actions button:hover,
.file-actions button:hover { color: var(--ink); border-bottom-color: var(--gold); }
.btn-delete:hover { color: #B4553F !important; border-bottom-color: #B4553F !important; }

.replies-list { margin: 18px 0 0 6px; padding-left: 20px; border-left: 1px solid var(--gold); }
.reply-item + .reply-item { margin-top: 14px; }
.reply-header { display: flex; gap: 12px; align-items: baseline; }
.reply-author { font-family: var(--f-serif); font-weight: 500; }
.reply-content { margin-top: 2px; font-size: 14px; }
.reply-form { margin-top: 18px; padding: 20px 24px; background: var(--surface); }

/* 档案 */
.file-login-container { display: flex; }
.file-login-box { width: min(100%, 400px); }
.file-login-box h3 { font-weight: 300; font-size: 24px; letter-spacing: 0.1em; margin-bottom: 20px; }
.file-login-box button { margin-top: 24px; }
.file-login-error { display: none; margin-top: 14px; color: #B4553F; font-size: 14px; }
.file-login-error.show { display: block; }

.file-manager { display: none; }
.file-manager.show { display: block; }
.file-actions-bar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 24px; }
.file-actions-bar button + button { background: transparent; color: var(--ink); border-color: var(--line-strong); }
#file-upload-input { display: none; }
.storage-badge { font-size: 12px; letter-spacing: 0.08em; color: var(--muted); margin-right: auto; }
.file-item { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 18px 0; border-top: 1px solid var(--line); }
.file-name { font-size: 15px; word-break: break-all; }
.file-meta { font-size: 12px; color: var(--muted); }
.file-actions { display: flex; gap: 16px; flex-shrink: 0; }

.empty-state,
.loading-state { padding: 40px 0; color: var(--muted); font-size: 15px; letter-spacing: 0.04em; }

.spinner {
    width: 24px;
    height: 24px;
    margin-top: 32px;
    border: 1px solid var(--line-strong);
    border-top-color: var(--gold);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.notification { border-radius: 0 !important; box-shadow: none !important; border: 0 !important; border-left: 2px solid var(--gold) !important; background: var(--surface) !important; font-size: 14px; letter-spacing: 0.04em; }
.notification-error { border-left-color: #B4553F !important; }

@keyframes slideIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }
@keyframes slideOut { from { opacity: 1; } to { opacity: 0; } }

/* ---------- 难度对话框 ---------- */
.level-dialog {
    padding: 0;
    border: 0;
    background: var(--bg);
    color: var(--ink);
    width: min(90vw, 400px);
    box-shadow: 0 30px 80px -30px var(--shadow);
}

.level-dialog::backdrop { background: rgba(28, 36, 32, 0.3); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); }
.level-dialog form { padding: 40px 36px 32px; text-align: center; }
.level-dialog h3 { font-weight: 300; font-size: 26px; letter-spacing: 0.14em; margin-bottom: 28px; }
.level-options { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.level-options button {
    min-height: 72px;
    border: 0;
    background: transparent;
    font-family: var(--f-serif);
    font-size: 18px;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: color 0.3s ease;
}

.level-options button + button { border-left: 1px solid var(--line); }
.level-options button:hover,
.level-options button:focus-visible { color: var(--gold); }
.level-cancel { margin-top: 20px; padding: 4px 0; border: 0; background: none; color: var(--muted); font-size: 13px; letter-spacing: 0.08em; cursor: pointer; }
.level-cancel:hover { color: var(--ink); }

/* ============================================================
   工具箱
   ============================================================ */
.toolbox-toggle {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 950;
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--line-strong);
    border-radius: 50%;
    background: color-mix(in srgb, var(--bg) 80%, transparent);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    color: var(--muted);
    cursor: pointer;
    transition: transform 0.5s var(--ease), color 0.3s ease, border-color 0.3s ease;
}

.toolbox-toggle:hover { color: var(--gold); border-color: var(--gold); }
.toolbox-toggle svg { width: 17px; height: 17px; stroke-width: 1.5; }

.toolbox-sidebar {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 960;
    width: 360px;
    max-width: 100vw;
    display: flex;
    flex-direction: column;
    background: var(--bg);
    border-left: 1px solid var(--line);
    transform: translateX(100%);
    transition: transform 0.5s var(--ease);
}

.toolbox-sidebar.open { transform: none; box-shadow: -30px 0 80px -40px var(--shadow); }
.toolbox-header { display: flex; justify-content: space-between; align-items: center; padding: 24px 24px 16px; }
.toolbox-title { display: flex; align-items: center; gap: 10px; font-family: var(--f-serif); font-size: 18px; letter-spacing: 0.12em; }
.toolbox-title svg { color: var(--gold); }
.toolbox-close { width: 32px; height: 32px; display: grid; place-items: center; border: 0; background: transparent; color: var(--muted); cursor: pointer; }
.toolbox-close:hover { color: var(--ink); }
.toolbox-tabs { display: grid; grid-template-columns: repeat(4, 1fr); padding: 0 24px; border-bottom: 1px solid var(--line); }
.toolbox-tab { height: 48px; display: grid; place-items: center; border: 0; border-bottom: 1px solid transparent; margin-bottom: -1px; background: transparent; color: var(--muted); cursor: pointer; }
.toolbox-tab svg { width: 18px; height: 18px; stroke-width: 1.5; }
.toolbox-tab:hover { color: var(--ink); }
.toolbox-tab.active { color: var(--ink); border-bottom-color: var(--gold); }
.toolbox-content { flex: 1; overflow-y: auto; padding: 28px 24px; }
.tool-panel { display: none; }
.tool-panel.active { display: block; }

.weather-location { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; letter-spacing: 0.06em; }
.weather-main { display: flex; align-items: center; gap: 16px; margin: 24px 0; }
.weather-icon { font-size: 44px; line-height: 1; }
.weather-temp { font-family: var(--f-serif); font-weight: 300; font-size: 64px; line-height: 1; }
.weather-details { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.weather-detail-item { display: flex; flex-direction: column; gap: 2px; padding: 14px 0; }
.weather-label { font-size: 12px; color: var(--muted); }
.weather-value { font-size: 15px; }
.weather-description { margin-top: 16px; color: var(--muted); font-size: 14px; }

.currency-header-compact { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.currency-header-compact h4 { font-weight: 500; font-size: 17px; letter-spacing: 0.1em; }
.refresh-icon { width: 30px; height: 30px; display: grid; place-items: center; border: 0; background: transparent; color: var(--muted); cursor: pointer; }
.refresh-icon:hover { color: var(--gold); }
.converter-row-compact { display: grid; grid-template-columns: 1fr 104px; gap: 12px; }

.converter-row-compact input,
.converter-row-compact select,
.dictionary-search input {
    width: 100%;
    padding: 10px 0;
    border: 0;
    border-bottom: 1px solid var(--line-strong);
    border-radius: 0;
    background: transparent;
    color: var(--ink);
    font: inherit;
    font-size: 16px;
}

.converter-row-compact select option { background: var(--bg); color: var(--ink); }
.swap-btn-compact { display: grid; place-items: center; width: 32px; height: 32px; margin: 12px auto; border: 1px solid var(--line-strong); border-radius: 50%; background: transparent; color: var(--muted); cursor: pointer; }
.swap-btn-compact:hover { color: var(--gold); border-color: var(--gold); }
.rate-display-compact { margin: 20px 0; padding: 12px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); font-size: 14px; }
.rate-item-compact { display: flex; justify-content: space-between; padding: 10px 0; font-size: 14px; color: var(--muted); font-variant-numeric: tabular-nums; }

.calculator-display { padding: 16px 0 20px; text-align: right; border-bottom: 1px solid var(--line); margin-bottom: 12px; }
.calculator-expression { min-height: 20px; font-size: 13px; color: var(--muted); word-break: break-all; }
.calculator-result { font-family: var(--f-serif); font-weight: 300; font-size: 44px; word-break: break-all; font-variant-numeric: tabular-nums; }
.calculator-buttons { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2px; }
.calc-btn { height: 54px; border: 0; background: transparent; font-size: 19px; cursor: pointer; transition: background-color 0.2s ease; }
.calc-btn:hover { background: var(--surface); }
.calc-btn-operator { color: var(--gold); }
.calc-btn-clear { color: #B4553F; }
.calc-btn-equals { grid-row: span 2; height: auto; background: var(--ink); color: var(--on-ink); }
.calc-btn-equals:hover { background: var(--gold-deep); }
.calc-btn-zero { grid-column: span 2; }

.dictionary-search { display: flex; gap: 8px; }
.dictionary-search button { flex-shrink: 0; width: 40px; display: grid; place-items: center; border: 0; background: transparent; color: var(--muted); cursor: pointer; }
.dictionary-search button:hover { color: var(--gold); }
.dict-placeholder { display: flex; flex-direction: column; align-items: center; gap: 12px; padding: 48px 0; color: var(--muted); font-size: 14px; }
.dict-placeholder svg { stroke-width: 1; }
.dict-entry { padding: 16px 0; border-bottom: 1px solid var(--line); }
.dict-word { font-family: var(--f-serif); font-size: 24px; }
.dict-reading { color: var(--gold); font-size: 14px; }
.dict-definition { margin-top: 6px; color: var(--muted); font-size: 14px; }

.reveal { opacity: 1; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1100px) {
    .nav-links a { padding: 6px 8px; letter-spacing: 0.04em; }
    .admin-btn { display: none; }
}

@media (max-width: 900px) {
    :root { --nav-h: 64px; }

    .hamburger { display: flex; }
    .nav-actions { margin-left: auto; }

    .nav-links {
        position: fixed;
        inset: 0;
        z-index: -1;
        flex-direction: column;
        justify-content: center;
        align-items: flex-start;
        gap: 4px;
        margin: 0;
        padding: 80px var(--gutter) 40px;
        background: var(--bg);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.5s ease, visibility 0.5s;
    }

    .nav-links.active { opacity: 1; visibility: visible; }
    .nav-links a { padding: 8px 0; font-family: var(--f-serif); font-weight: 300; font-size: 30px; letter-spacing: 0.2em; color: var(--ink); }
    .nav-links a.active { color: var(--gold); }
    .nav-links a.active::after { display: none; }

    .rooms-list { grid-template-columns: 1fr; }
    .plates { grid-template-columns: 1fr; }
    .plate:nth-child(2) { margin-bottom: 0; }
    .plate:nth-child(2) .plate-art { aspect-ratio: 3 / 2; }
    .verse { grid-template-columns: repeat(6, minmax(0, 1fr)); row-gap: 8px; }
    .verse-name { opacity: 1; transform: none; }
    .guestbook-container { grid-template-columns: 1fr; }
    .guestbook-form { position: static; }
}

@media (max-width: 640px) {
    .logo-domain { display: none; }

    .hero {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr auto;
        gap: 40px;
        padding-top: calc(var(--nav-h) + 24px);
        padding-bottom: 48px;
    }

    .hero-title-block { grid-column: 1; grid-row: 1; justify-self: end; padding-top: 8px; }
    .hero-title { font-size: clamp(46px, 13vw, 64px); }
    .hero-eyebrow { margin-top: 64px; font-size: 13px; }
    .hero-intro { grid-column: 1; grid-row: 2; }
    .hero-actions { gap: 24px; margin-top: 32px; }

    html[data-language="en"] .hero-title-block { padding-top: 4vh; }

    .verse { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .verse-glyph { font-size: 40px; }

    .page-head { flex-direction: column; align-items: flex-start; gap: 12px; }
    .page-glyph { font-size: 88px; }

    .about-card { grid-template-columns: 1fr; }
    .about-avatar { grid-row: auto; margin-bottom: 24px; }

    .toolbox-toggle { right: 16px; bottom: 16px; }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
    .reveal-on-load { opacity: 1; transform: none; }
}