/* ============================================================
   FOHOK · X-GORB Studio — LyLme_Spage 导航主题
   设计系统：日/夜双主题 · 网格背景 · 内容优先
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; font-size: 16px; }

/* ---------- 主题令牌 ---------- */
:root {
  --bg-primary:   #fafafa;
  --bg-secondary: #ffffff;
  --bg-tertiary:  #f5f5f5;
  --bg-hover:     #f0f0f0;
  --text-primary: #171717;
  --text-secondary:#404040;
  --text-dim:     #737373;
  --text-muted:   #a3a3a3;
  --border-primary: #e5e5e5;
  --border-input:  #d4d4d4;
  --border-hover:  #a3a3a3;
  --accent:       #171717;
  --grid-line:    rgba(23,23,23,.045);
  --grid-line-strong: rgba(23,23,23,.075);
  --grid-glow:    radial-gradient(1200px 500px at 50% -100px, rgba(23,23,23,.04), transparent 70%);
  --scrollbar-track: #f5f5f5;
  --scrollbar-thumb: #d4d4d4;
  --ff-b: 'Noto Sans SC', 'PingFang SC', sans-serif;
  --ff-m: 'JetBrains Mono', ui-monospace, monospace;
  --r-sm: 6px; --r-md: 8px; --r-lg: 12px;
  --ease: cubic-bezier(.16,1,.3,1);
  --bg-media-opacity: 1;
}
[data-theme="dark"] {
  --bg-primary:   #050505;
  --bg-secondary: #0a0a0a;
  --bg-tertiary:  #111111;
  --bg-hover:     #1a1a1a;
  --text-primary: #f5f5f5;
  --text-secondary:#d4d4d4;
  --text-dim:     #a3a3a3;
  --text-muted:   #525252;
  --border-primary: #1a1a1a;
  --border-input:  #222222;
  --border-hover:  #3a3a3a;
  --accent:       #f5f5f5;
  --grid-line:    rgba(245,245,245,.05);
  --grid-line-strong: rgba(245,245,245,.09);
  --grid-glow:    radial-gradient(1200px 500px at 50% -100px, rgba(245,245,245,.05), transparent 70%);
  --scrollbar-track: #0a0a0a;
  --scrollbar-thumb: #333333;
}
html { color-scheme: light; }
html[data-theme="dark"] { color-scheme: dark; }

/* ---------- 基础 ---------- */
body {
  background:
    var(--grid-glow),
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px),
    var(--bg-primary);
  background-size: 100% 100%, 40px 40px, 40px 40px, 100% 100%;
  background-attachment: fixed;
  color: var(--text-primary);
  font-family: var(--ff-b);
  font-weight: 300;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color .4s, color .4s;
}
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
a { text-decoration: none; color: inherit; }
::selection { background: var(--accent); color: var(--bg-primary); }
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }

.wrap { max-width: 1280px; margin: 0 auto; padding: 0 28px; }

/* 顶部滚动进度条 */
.scroll-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 320;
  background: var(--accent); transform-origin: left; transform: scaleX(0);
  pointer-events: none;
}

/* ---------- 背景层 ---------- */
.bg-layer {
  position: absolute; inset: 0; z-index: -2; overflow: hidden; pointer-events: none;
}
.bg-layer.fixed { position: fixed; }
.bg-layer img, .bg-layer video {
  width: 100%; height: 100%; object-fit: cover;
  opacity: 0; transition: opacity .9s var(--ease);
  filter: saturate(.92);
  -webkit-mask-image: linear-gradient(#000 62%, transparent 100%);
  mask-image: linear-gradient(#000 62%, transparent 100%);
}
.bg-layer img.ready, .bg-layer video.ready { opacity: var(--bg-media-opacity, 1); }
.bg-layer video:not(.ready) { visibility: hidden; }
.bg-none { width: 100%; height: 100%; }
.bg-grid {
  position: absolute; inset: 0;
  background:
    linear-gradient(var(--grid-line-strong) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line-strong) 1px, transparent 1px);
  background-size: 40px 40px;
  -webkit-mask-image: linear-gradient(#000 55%, transparent 100%);
  mask-image: linear-gradient(#000 55%, transparent 100%);
}

/* ---------- 顶部导航 ---------- */
nav#nav {
  position: fixed; top: 0; left: 50%; transform: translateX(-50%);
  z-index: 200; width: 100%; max-width: 1280px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.1rem 28px; margin: 0 auto;
  transition: box-shadow .35s, border-color .35s, background-color .35s, backdrop-filter .35s;
}
nav#nav.stuck {
  background: color-mix(in srgb, var(--bg-primary) 82%, transparent);
  -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-primary);
  box-shadow: 0 12px 32px -26px rgba(0,0,0,.28);
}
.nav-brand { display: flex; align-items: center; gap: .8rem; min-width: 0; }
.nav-logo-pic { position: relative; width: 24px; height: 24px; flex-shrink: 0; }
.nav-logo-img { width: 24px; height: 24px; object-fit: cover; border-radius: 6px; box-shadow: 0 1px 3px rgba(0,0,0,.12); transition: opacity .45s var(--ease); }
.nav-logo { font-size: 1rem; font-weight: 700; letter-spacing: .01em; color: var(--text-primary); line-height: 1; white-space: nowrap; }
.nav-sep { width: 1px; height: 14px; background: var(--border-input); }
.nav-sub { font-family: var(--ff-m); font-size: .58rem; letter-spacing: .14em; color: var(--text-dim); white-space: nowrap; }
.nav-links { display: flex; align-items: center; gap: 1.4rem; }
.nav-menu { display: flex; align-items: center; gap: 2rem; }
.nav-links a.nav-link { font-size: .82rem; font-weight: 400; color: var(--text-dim); transition: color .2s; }
.nav-links a.nav-link:hover { color: var(--text-primary); }
.nav-link.active { color: var(--text-primary); }
.nav-link.active::after { content:''; display:block; height:1px; background:var(--accent); transform: translateY(2px); }

/* 主题切换按钮 */
.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border: 1px solid var(--border-input);
  border-radius: var(--r-sm); background: transparent; cursor: pointer;
  color: var(--text-dim); transition: border-color .2s, color .2s, transform .2s;
  flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--border-hover); color: var(--text-primary); transform: translateY(-1px); }
.theme-toggle svg { width: 14px; height: 14px; }
.ico-dark { display: none; }
[data-theme="dark"] .ico-sun { display: none; }
[data-theme="dark"] .ico-dark { display: block; }

/* 汉堡菜单 */
.nav-burger {
  display: none; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
  width: 30px; height: 30px; background: none; cursor: pointer;
  border: 1px solid var(--border-input); border-radius: var(--r-sm);
  transition: border-color .2s, background .2s; flex-shrink: 0;
}
.nav-burger:hover { border-color: var(--border-hover); }
.nav-burger span { width: 14px; height: 1px; background: var(--text-dim); transition: transform .3s var(--ease), opacity .3s; }
.nav-links.open .nav-burger span:nth-child(1) { transform: translateY(3px) rotate(45deg); }
.nav-links.open .nav-burger span:nth-child(2) { transform: translateY(-3px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100vh; display: flex; flex-direction: column; max-width: 1280px; margin: 0 auto; padding: 0 28px; }
.hero-rule-top { margin-top: 6.5rem; border: none; border-top: 1px solid var(--border-primary); position: relative; flex: 0 0 auto; }
.hero-rule-top::after {
  content: 'VOL.01 / LYLME_NAV';
  position: absolute; right: 0; top: -10px;
  font-family: var(--ff-m); font-size: .54rem; letter-spacing: .16em;
  color: var(--text-dim); background: var(--bg-primary); padding: 0 .6rem;
}
.hero-inner { flex: 1; display: flex; flex-direction: column; padding: 2.5rem 0 0; }
.hero-top { flex: 1; }
.hero-label { font-family: var(--ff-m); font-size: .56rem; letter-spacing: .18em; color: var(--text-dim); text-transform: uppercase; margin-bottom: 2rem; }
.hero-label::before { content: '> '; color: var(--accent); }
.hero-h { font-size: clamp(2.6rem, 8.5vw, 6.8rem); line-height: 1.02; letter-spacing: -.03em; font-weight: 700; color: var(--text-primary); }
.hero-h em { font-style: normal; color: var(--text-muted); font-weight: 300; }

.hero-search { padding: 2.5rem 0 1rem; }
.sou-bar { position: relative; max-width: 720px; }
.sou-types { display: flex; gap: 6px; margin-bottom: 14px; flex-wrap: wrap; }
.sou-types label {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 13px; cursor: pointer; user-select: none;
  color: var(--text-dim); background: var(--bg-secondary);
  border: 1px solid var(--border-primary); border-radius: 999px;
  font-size: .8rem; font-weight: 400; line-height: 1;
  transition: border-color .2s, color .2s, transform .2s var(--ease);
}
.sou-types label img, .sou-types label svg { width: 14px; height: 14px; vertical-align: middle; }
.sou-types input:checked + label,
.sou-types label:hover { border-color: var(--border-hover); color: var(--text-primary); }
.sou-types input:checked + label { background: var(--accent); color: var(--bg-primary); border-color: var(--accent); }
.sou-types input:checked + label span { color: var(--bg-primary) !important; }
.sou-types input:checked + label img { filter: invert(1); }
#super-search-fm { position: relative; }
#search-text {
  width: 100%; height: 58px; padding: 0 64px 0 22px;
  font-family: var(--ff-b); font-size: 1rem; font-weight: 300; color: var(--text-primary);
  background: var(--bg-secondary); border: 1px solid var(--border-input);
  border-radius: var(--r-lg); outline: none;
  transition: border-color .25s, box-shadow .25s;
}
#search-text::placeholder { color: var(--text-muted); }
#search-text:focus { border-color: var(--accent); box-shadow: 0 14px 40px -26px var(--accent); }
#super-search-fm .submit {
  position: absolute; top: 50%; right: 10px; transform: translateY(-50%);
  width: 42px; height: 42px; display: inline-flex; align-items: center; justify-content: center;
  border: 0; border-radius: var(--r-sm); background: var(--accent); color: var(--bg-primary);
  cursor: pointer; transition: transform .25s var(--ease), opacity .2s;
}
#super-search-fm .submit:hover { transform: translateY(-50%) translateY(-2px); }
#super-search-fm .submit svg { width: 18px; height: 18px; }

/* 搜索联想 */
#word {
  position: absolute; top: calc(100% + 8px); left: 0; right: 0; z-index: 50;
  list-style: none; padding: 8px; border-radius: var(--r-md);
  background: var(--bg-secondary); border: 1px solid var(--border-primary);
  box-shadow: 0 30px 60px -30px rgba(0,0,0,.45);
}
#word:empty, #word[style*="display: none"] { display: none; }
#word li {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 12px; font-size: .86rem; color: var(--text-secondary);
  border-radius: var(--r-sm); cursor: pointer; transition: background .15s;
}
#word li.selected, #word li:hover { background: var(--bg-tertiary); }
#word li .sug-icon { display: inline-flex; flex-shrink: 0; }
#word li .sug-icon svg { width: 14px; height: 14px; fill: var(--text-dim); }
.sug-badge-inner { margin-left: auto; font-size: 11px; color: var(--accent); background: var(--bg-tertiary); padding: 1px 7px; border-radius: 999px; flex-shrink: 0; }

.hero-desc { max-width: 720px; font-size: .9rem; font-weight: 300; color: var(--text-dim); line-height: 1.9; margin-top: 20px; }

.hero-rule-bottom {
  border-top: 1px solid var(--border-input);
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  padding: 1rem 0; font-family: var(--ff-m); font-size: .54rem; letter-spacing: .14em; color: var(--text-dim);
}
.hero-scan { position: absolute; left: 28px; right: 28px; top: 6.5rem; height: 1px; background: var(--accent); opacity: 0; pointer-events: none; }
@keyframes scan-once { 0% { opacity: 0; transform: translateY(0); } 5% { opacity: .35; } 90% { opacity: .35; } 100% { opacity: 0; transform: translateY(70vh); } }
.hero-scan.go { animation: scan-once 1.8s 1.1s var(--ease) forwards; }

/* ---------- Ticker ---------- */
.ticker { overflow: hidden; border-top: 1px solid var(--border-primary); border-bottom: 1px solid var(--border-primary); background: var(--bg-secondary); padding: .85rem 0; }
.ticker-track { display: flex; white-space: nowrap; animation: ticker-run 26s linear infinite; }
.ticker-track:hover { animation-play-state: paused; }
.ticker-item { display: inline-flex; align-items: center; gap: 1rem; padding: 0 1.8rem; flex-shrink: 0; font-family: var(--ff-m); font-size: .58rem; letter-spacing: .16em; color: var(--text-dim); text-transform: uppercase; }
.ticker-dot { width: 2px; height: 2px; background: var(--accent); }
@keyframes ticker-run { to { transform: translateX(-50%); } }

/* ---------- 分组快速导航 ---------- */
.group-nav { display: flex; align-items: center; gap: 1.2rem; padding: 3.5rem 0 .5rem; overflow-x: auto; scrollbar-width: none; }
.group-nav::-webkit-scrollbar { display: none; }
.group-nav-label { font-family: var(--ff-m); font-size: .56rem; letter-spacing: .18em; color: var(--text-dim); white-space: nowrap; }
.group-nav-label::before { content: '— '; color: var(--accent); }
.group-nav-list { display: flex; gap: 8px; }
.group-nav .chip {
  display: inline-flex; align-items: center; gap: 8px; white-space: nowrap;
  padding: 7px 14px; cursor: pointer; font-family: var(--ff-b); font-size: .8rem; font-weight: 400;
  background: transparent; color: var(--text-dim); border: 1px solid var(--border-input);
  border-radius: var(--r-sm); transition: border-color .2s, color .2s, background .2s;
}
.group-nav .chip i { font-family: var(--ff-m); font-style: normal; font-size: .56rem; letter-spacing: .08em; color: var(--text-muted); }
.group-nav .chip:hover { border-color: var(--border-hover); color: var(--text-primary); }
.group-nav .chip.active { background: var(--accent); color: var(--bg-primary); border-color: var(--accent); }
.group-nav .chip.active i { color: var(--bg-primary); }

/* ---------- Section 通用 ---------- */
.sec-h { font-size: clamp(1.8rem, 3.4vw, 3rem); line-height: 1.12; letter-spacing: -.02em; font-weight: 700; color: var(--text-primary); }
.sec-h em { font-style: normal; color: var(--text-muted); font-weight: 400; }
.body-copy { font-weight: 300; color: var(--text-secondary); line-height: 1.9; font-size: .94rem; }

/* ---------- 链接分组区 ---------- */
.sites-sec { border-top: 1px solid var(--border-primary); border-bottom: 1px solid var(--border-primary); background: linear-gradient(var(--grid-line-strong) 1px, transparent 1px), linear-gradient(90deg, var(--grid-line-strong) 1px, transparent 1px), var(--bg-secondary); background-size: 40px 40px, 40px 40px, 100% 100%; padding: 6.5rem 0; }
.sites-top { display: flex; flex-direction: column; gap: 1.4rem; margin-bottom: 3.5rem; }
.section-header { margin-bottom: 1.4rem; }
.section-num { font-family: var(--ff-m); font-size: .58rem; letter-spacing: .2em; color: var(--text-dim); display: flex; align-items: center; gap: .6rem; margin-bottom: 1rem; }
.section-num::before { content: ''; width: 20px; height: 1px; background: var(--accent); }

/* 分组卡片 */
.lnk-group { border-top: 1px solid var(--border-primary); padding: 2.8rem 0; }
.lnk-group:last-child { border-bottom: 1px solid var(--border-primary); }
.group-head { display: flex; align-items: center; gap: 14px; margin-bottom: 2rem; position: relative; scroll-margin-top: 120px; }
.group-idx { font-family: var(--ff-m); font-size: .56rem; letter-spacing: .16em; color: var(--text-muted); border: 1px solid var(--border-input); border-radius: 3px; padding: .2rem .5rem; flex-shrink: 0; }
.group-icon { display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
.group-icon img, .group-icon svg { width: 26px; height: 26px; object-fit: cover; }
.group-name { font-size: 1.5rem; font-weight: 700; color: var(--text-primary); letter-spacing: -.01em; line-height: 1.1; }
.group-rule { flex: 1; height: 1px; background: var(--border-primary); margin-left: .6rem; }

/* 链接网格 */
.lnk-grid { list-style: none; display: grid; grid-template-columns: repeat(auto-fill, minmax(132px, 1fr)); gap: 10px; }
.lnk-item { margin: 0; }
.lnk-tile {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px;
  width: 100%; height: 100%; min-height: 120px; padding: 20px 12px;
  background: var(--bg-secondary); border: 1px solid var(--border-primary);
  border-radius: var(--r-md); text-align: center;
  transition: transform .3s var(--ease), border-color .3s, box-shadow .3s, background .3s;
  position: relative; overflow: hidden;
}
.lnk-tile::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .45s var(--ease);
}
.lnk-tile:hover { transform: translateY(-2px); border-color: var(--border-hover); }
.lnk-tile:hover::before { transform: scaleX(1); }
.lnk-icon { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: var(--r-md); background: var(--bg-tertiary); filter: grayscale(.3); transition: filter .25s, background .25s; flex-shrink: 0; }
.lnk-tile:hover .lnk-icon { filter: grayscale(0); background: var(--bg-hover); }
.lnk-icon img { width: 24px; height: 24px; object-fit: contain; }
.lnk-icon svg { width: 24px; height: 24px; fill: var(--text-secondary); }
.lnk-icon:has(svg) { filter: none; }
.lnk-name {
  font-size: .8rem; font-weight: 400; color: var(--text-secondary); line-height: 1.3;
  width: 100%; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; word-break: break-all;
  transition: color .2s;
}
.lnk-tile:hover .lnk-name { color: var(--text-primary); }

/* ---------- Footer ---------- */
footer { padding: 3.5rem 28px 2.5rem; margin: 0 auto; max-width: 1280px; }
.ft-top { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap; padding-bottom: 2rem; border-bottom: 1px solid var(--border-primary); }
.ft-brand { display: flex; align-items: baseline; gap: 14px; }
.ft-mark { font-size: 1.2rem; font-weight: 700; color: var(--text-primary); }
.ft-sub { font-family: var(--ff-m); font-size: .54rem; letter-spacing: .16em; color: var(--text-muted); }
.ft-note { font-size: .82rem; font-weight: 300; color: var(--text-dim); }
.ft-bottom { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; padding-top: 1.4rem; }
.ft-copy { font-family: var(--ff-m); font-size: .54rem; letter-spacing: .08em; color: var(--text-muted); text-align: center; }
.ft-links { display: flex; flex-wrap: wrap; gap: 1.2rem; justify-content: flex-end; align-items: center; }
.ft-links a { font-size: .76rem; font-weight: 400; color: var(--text-dim); transition: color .2s; }
.ft-links a:hover { color: var(--accent); }
.ft-links .sep { color: var(--border-hover); }
.ft-links .back-top { font-family: var(--ff-m); font-size: .58rem; letter-spacing: .1em; }

/* ---------- 入场动画 ---------- */
[data-reveal] { opacity: 0; transform: translateY(20px); transition: opacity .7s var(--ease), transform .7s var(--ease); transition-delay: var(--d, 0ms); }
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal="left"] { transform: translateX(-20px); }
[data-reveal="left"].in { transform: none; }
[data-reveal="right"] { transform: translateX(20px); }
[data-reveal="right"].in { transform: none; }
[data-reveal="fade"] { transform: none; }
[data-reveal="fade"].in { transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .nav-burger { display: flex; }
  .nav-menu { display: none; }
  .nav-links.open .nav-menu {
    display: flex; flex-direction: column; gap: 0;
    position: fixed; top: 62px; left: 20px; right: 20px;
    background: var(--bg-secondary); border: 1px solid var(--border-primary);
    border-radius: var(--r-lg); padding: .4rem 1.2rem;
    box-shadow: 0 24px 48px -32px rgba(0,0,0,.38); z-index: 60;
  }
  .nav-links.open .nav-menu .nav-link { padding: .8rem 0; font-size: .95rem; border-bottom: 1px solid var(--border-primary); }
  .nav-links.open .nav-menu .nav-link:last-child { border-bottom: none; }
  .sites-top { flex-direction: column; }
  footer { justify-content: center; text-align: center; }
  .ft-top { flex-direction: column; gap: .6rem; }
  .ft-bottom { flex-direction: column; }
  .ft-links { justify-content: center; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 20px; }
  .hero, nav#nav { padding-left: 20px; padding-right: 20px; }
  .hero-h { font-size: clamp(2.4rem, 12vw, 3.6rem); }
  .hero-rule-top::after { display: none; }
  .sites-sec { padding: 4.5rem 0; }
  .lnk-grid { grid-template-columns: repeat(auto-fill, minmax(108px, 1fr)); gap: 8px; }
  .lnk-tile { min-height: 104px; padding: 16px 10px; }
  .btn-white { width: 100%; justify-content: center; }
  #search-text { height: 52px; }
  .hero-search { padding-top: 2rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}