/* ============================================================
   Ag108 学习主页 · 样式 v2
   深色科技风：渐变光晕 + 网格 + 玻璃拟态卡片
   零外部依赖，无字体 / 图片外链
   ============================================================ */

:root {
  --bg:          #05070d;
  --panel:       rgba(255, 255, 255, .035);
  --panel-2:     rgba(255, 255, 255, .055);
  --line:        rgba(125, 165, 225, .16);
  --line-strong: rgba(125, 165, 225, .32);
  --text:        #dbe7f7;
  --text-strong: #f4f8ff;
  --dim:         #8296b5;
  --dim-2:       #5d7190;
  --cyan:        #22e6ff;
  --violet:      #7b6cff;
  --pink:        #ff6b9d;
  --amber:       #ffb347;
  --green:       #3ddc97;

  --radius:   18px;
  --wrap:     1180px;
  --ease:     cubic-bezier(.22, .61, .36, 1);

  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
          "Segoe UI", Roboto, system-ui, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 { margin: 0; line-height: 1.22; color: var(--text-strong); }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }

::selection { background: rgba(34, 230, 255, .28); color: #fff; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

.skip-link {
  position: fixed; top: -60px; left: 20px; z-index: 200;
  background: var(--cyan); color: #04121a; padding: 10px 18px; border-radius: 10px;
  font-weight: 600; transition: top .2s var(--ease);
}
.skip-link:focus { top: 16px; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 8px; }

/* ------------------------- 背景层 ------------------------- */
.bg-layer { position: fixed; inset: 0; z-index: 0; pointer-events: none; }
.bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(120, 165, 225, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 165, 225, .05) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: radial-gradient(ellipse 90% 65% at 50% 0%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 65% at 50% 0%, #000 0%, transparent 78%);
}
.bg-glow { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .55; }
.bg-glow-1 { width: 640px; height: 640px; top: -260px; left: -160px; background: radial-gradient(circle, rgba(34, 230, 255, .26), transparent 68%); }
.bg-glow-2 { width: 560px; height: 560px; top: 220px; right: -200px; background: radial-gradient(circle, rgba(123, 108, 255, .24), transparent 68%); }

/* ------------------------- 导航 ------------------------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  background: rgba(5, 7, 13, .72);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}
.nav.is-scrolled { border-bottom-color: var(--line); background: rgba(5, 7, 13, .9); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }

.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  width: 30px; height: 30px; display: grid; place-items: center;
  border-radius: 9px; font-weight: 800; font-size: 15px; color: #04121a;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  box-shadow: 0 0 18px rgba(34, 230, 255, .4);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; font-weight: 700; letter-spacing: .4px; }
.brand-text small { font: 500 9px/1.4 var(--mono); color: var(--dim-2); letter-spacing: 2.4px; }

.nav-links { display: flex; align-items: center; gap: 2px; }
.nav-links a {
  padding: 7px 13px; border-radius: 10px; font-size: 14px; color: var(--dim);
  transition: color .2s var(--ease), background .2s var(--ease);
}
.nav-links a:hover { color: var(--text-strong); background: var(--panel); }
.nav-gh { margin-left: 8px; border: 1px solid var(--line); font-family: var(--mono); font-size: 12.5px !important; }
.nav-gh:hover { border-color: var(--line-strong); }

.nav-toggle { display: none; background: none; border: 0; padding: 10px; cursor: pointer; }
.nav-toggle span { display: block; width: 20px; height: 2px; margin: 4px 0; background: var(--text); border-radius: 2px; transition: transform .25s var(--ease), opacity .2s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ------------------------- 通用区块标题 ------------------------- */
.sec-num { font: 500 11.5px/1 var(--mono); letter-spacing: 2.6px; color: var(--cyan); opacity: .9; }
.sec-title { margin-top: 9px; font-size: clamp(26px, 3.6vw, 38px); font-weight: 800; letter-spacing: -.8px; }
.sec-dot { color: var(--cyan); }
.sec-desc { max-width: 42ch; color: var(--dim); font-size: 14px; }
main { position: relative; z-index: 1; }

/* ------------------------- 首屏 ------------------------- */
.hero { padding: 64px 24px 40px; }

.hero-intro { max-width: 800px; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font: 500 11.5px/1 var(--mono); letter-spacing: 2.4px; color: var(--cyan);
  background: rgba(34, 230, 255, .07); border: 1px solid rgba(34, 230, 255, .22);
  padding: 7px 14px; border-radius: 999px;
}
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 10px var(--green); animation: breathe 2.4s ease-in-out infinite; }
@keyframes breathe { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: .35; transform: scale(.72); } }

.hero-title {
  margin: 20px 0 0;
  font-size: clamp(46px, 8vw, 92px); font-weight: 800; letter-spacing: -2.4px; line-height: 1;
  background: linear-gradient(96deg, #ffffff 0%, #b9ecff 38%, var(--violet) 92%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent;
}
.hero-line { margin-top: 16px; display: flex; flex-wrap: wrap; align-items: center; gap: 10px; font-size: 16px; }
.hero-line > span:first-child { font-weight: 600; color: var(--text-strong); }
.hero-sep { color: var(--cyan); font-weight: 300; }
.hero-line > span:last-child { font-family: var(--mono); font-size: 13px; letter-spacing: 2.4px; color: var(--dim-2); }
.hero-bio { margin-top: 10px; max-width: 58ch; color: var(--dim); font-size: 15px; }

.scroll-hint {
  margin-top: 40px; display: flex; align-items: center; gap: 10px;
  font: 500 11px/1 var(--mono); letter-spacing: 2px; color: var(--dim-2);
}
.scroll-hint i { display: block; width: 46px; height: 1px; background: linear-gradient(90deg, var(--cyan), transparent); position: relative; }
.scroll-hint i::after {
  content: ""; position: absolute; left: 0; top: -2px; width: 5px; height: 5px; border-radius: 50%;
  background: var(--cyan); box-shadow: 0 0 8px var(--cyan); animation: slide 2.2s ease-in-out infinite;
}
@keyframes slide { 0% { left: 0; opacity: 0; } 30% { opacity: 1; } 100% { left: 42px; opacity: 0; } }

/* ------------------------- 最新三个项目 ------------------------- */
.showcase { margin-top: 52px; }
.show-head { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.show-total { margin-left: auto; font: 400 12px/1 var(--mono); color: var(--dim-2); }

.show-grid { display: grid; grid-template-columns: 1.12fr 1fr; grid-template-rows: 1fr 1fr; gap: 18px; }
.sc-card {
  position: relative; display: flex; flex-direction: column; overflow: hidden;
  border-radius: var(--radius); border: 1px solid var(--line);
  background: linear-gradient(165deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  transition: transform .32s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
  opacity: 0; transform: translateY(20px);
}
.sc-card.is-in { opacity: 1; transform: none; }
.sc-card:hover { transform: translateY(-5px); border-color: var(--line-strong); box-shadow: 0 30px 64px -34px rgba(0,0,0,.95); }
.sc-card::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0;
  background: radial-gradient(360px circle at var(--mx, 50%) var(--my, 50%), rgba(255,255,255,.08), transparent 62%);
  transition: opacity .3s var(--ease);
}
.sc-card:hover::after { opacity: 1; }
.sc-main { grid-row: span 2; }

.sc-art { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); }
.sc-art::before { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, var(--a1), var(--a2)); opacity: .26; }
.sc-art::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.1) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.1) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: linear-gradient(200deg, #000, transparent 76%);
  -webkit-mask-image: linear-gradient(200deg, #000, transparent 76%);
}
.sc-art > * { position: relative; z-index: 1; }
.sc-main .sc-art { height: 220px; }
.sc-sub  .sc-art { height: 92px; }

.sc-idx {
  position: absolute; top: 14px; left: 16px; z-index: 2;
  font: 700 12px/1 var(--mono); letter-spacing: 1.4px; color: #fff;
  padding: 6px 9px; border-radius: 8px;
  background: rgba(5, 7, 13, .5); border: 1px solid rgba(255,255,255,.2); backdrop-filter: blur(4px);
}
.sc-glyph {
  position: absolute; inset: 0; z-index: 1; display: grid; place-items: center;
  font-size: 88px; line-height: 1; color: rgba(255,255,255,.94); text-shadow: 0 10px 44px rgba(0,0,0,.55);
  transition: transform .5s var(--ease);
}
.sc-sub .sc-glyph { font-size: 40px; place-items: center start; padding-left: 26px; }
.sc-card:hover .sc-glyph { transform: scale(1.07) rotate(-3deg); }
.sc-date { position: absolute; bottom: 12px; right: 16px; z-index: 2; font: 500 11px/1 var(--mono); letter-spacing: 1.4px; color: rgba(255,255,255,.75); }
.sc-status {
  position: absolute; bottom: 12px; left: 16px; z-index: 2;
  font: 600 10.5px/1 var(--mono); letter-spacing: 1.2px; padding: 5px 8px; border-radius: 7px;
  background: rgba(5, 7, 13, .55); border: 1px solid rgba(255,255,255,.2); color: #fff; backdrop-filter: blur(4px);
}
.sc-status[data-s="online"] { color: #b8ffe6; border-color: rgba(61,220,151,.45); }
.sc-status[data-s="wip"]     { color: #ffe1b5; border-color: rgba(255,179,71,.45); }
.sc-status[data-s="beta"]    { color: #d7c9ff; border-color: rgba(123,108,255,.5); }

.sc-body { padding: 18px 20px 20px; display: flex; flex-direction: column; flex: 1; }
.sc-cat { font: 500 11px/1 var(--mono); letter-spacing: 1.6px; color: var(--cyan); opacity: .85; }
.sc-title { margin-top: 8px; font-size: 17px; font-weight: 700; letter-spacing: -.3px; }
.sc-main .sc-title { font-size: 24px; }
.sc-subtitle { margin-top: 5px; font: 500 10.5px/1.5 var(--mono); letter-spacing: 1.3px; color: var(--dim-2); }
.sc-summary { margin-top: 11px; color: var(--dim); font-size: 14px; flex: 1; }
.sc-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.tag { font-size: 11.5px; padding: 4px 9px; border-radius: 7px; background: rgba(255,255,255,.05); border: 1px solid var(--line); color: var(--dim); }
.sc-foot { margin-top: 18px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.sc-open {
  display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; color: var(--text-strong);
  padding: 9px 15px; border-radius: 11px; border: 1px solid var(--line-strong); background: var(--panel);
  transition: all .22s var(--ease);
}
.sc-card:hover .sc-open { color: var(--cyan); border-color: rgba(34,230,255,.55); box-shadow: 0 0 20px -8px rgba(34,230,255,.6); }
.sc-open span:last-child { transition: transform .22s var(--ease); }
.sc-card:hover .sc-open span:last-child { transform: translate(3px, -3px); }
.sc-path { font: 400 11px/1 var(--mono); color: var(--dim-2); }

/* ------------------------- 全部作品档案 ------------------------- */
.works { padding: 58px 24px 0; }
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; flex-wrap: wrap; margin-bottom: 26px; }

.filters { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 24px; }
.chip {
  padding: 7px 15px; border-radius: 999px; font-size: 13px; cursor: pointer;
  background: var(--panel); border: 1px solid var(--line); color: var(--dim); font-family: inherit;
  transition: all .2s var(--ease);
}
.chip:hover { color: var(--text-strong); border-color: var(--line-strong); }
.chip.is-active { color: var(--cyan); border-color: rgba(34, 230, 255, .5); background: rgba(34, 230, 255, .1); box-shadow: 0 0 16px -4px rgba(34, 230, 255, .45); }
.chip .chip-n { font-family: var(--mono); font-size: 11px; opacity: .6; margin-left: 5px; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.card {
  position: relative; display: flex; flex-direction: column; overflow: hidden;
  border-radius: var(--radius); background: linear-gradient(165deg, rgba(255,255,255,.05), rgba(255,255,255,.018));
  border: 1px solid var(--line);
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
  opacity: 0; transform: translateY(18px);
}
.card.is-in { opacity: 1; transform: none; }
.card:hover { transform: translateY(-5px); border-color: var(--line-strong); box-shadow: 0 26px 56px -34px rgba(0,0,0,.95); }
.card-art { position: relative; height: 118px; overflow: hidden; border-bottom: 1px solid var(--line); }
.card-art::before { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, var(--a1), var(--a2)); opacity: .24; }
.card-art::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.09) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.09) 1px, transparent 1px);
  background-size: 20px 20px;
  mask-image: linear-gradient(200deg, #000, transparent 74%); -webkit-mask-image: linear-gradient(200deg, #000, transparent 74%);
}
.card-art > * { position: relative; z-index: 1; }
.card-glyph { position: absolute; inset: 0; z-index: 1; display: grid; place-items: center; font-size: 40px; color: rgba(255,255,255,.92); }
.card-date { position: absolute; top: 12px; right: 14px; z-index: 2; font: 500 11px/1 var(--mono); color: rgba(255,255,255,.65); }
.card-body { padding: 17px 19px 19px; display: flex; flex-direction: column; flex: 1; }
.card-kicker { font: 500 10.5px/1 var(--mono); letter-spacing: 1.6px; color: var(--cyan); opacity: .85; }
.card-title { margin-top: 8px; font-size: 17px; font-weight: 700; }
.card-summary { margin-top: 9px; color: var(--dim); font-size: 13.5px; flex: 1; }
.card-foot { margin-top: 16px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.card-link {
  display: inline-flex; align-items: center; gap: 7px; font-size: 13.5px; font-weight: 600; color: var(--text-strong);
  padding: 8px 14px; border-radius: 10px; border: 1px solid var(--line-strong); background: var(--panel); transition: all .22s var(--ease);
}
.card:hover .card-link { color: var(--cyan); border-color: rgba(34,230,255,.55); }
.card-path { font: 400 10.5px/1 var(--mono); color: var(--dim-2); }
.works-empty { text-align: center; color: var(--dim-2); padding: 40px 0; }

/* ------------------------- 关于我 / 联系 ------------------------- */
.about { padding: 82px 24px 0; }
.about-card {
  display: grid; grid-template-columns: 1.25fr 1fr; gap: 0;
  border-radius: 24px; overflow: hidden; border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(255,255,255,.055), rgba(255,255,255,.018));
}
.about-main { padding: 34px 36px; }
.about-side { padding: 34px 36px; border-left: 1px solid var(--line); background: rgba(5, 7, 13, .35); }

.about-who { margin-top: 22px; display: flex; align-items: center; gap: 14px; }
.about-avatar {
  width: 52px; height: 52px; border-radius: 16px; display: grid; place-items: center; flex: none;
  font-size: 22px; font-weight: 800; color: #04121a;
  background: linear-gradient(135deg, var(--cyan), var(--violet)); box-shadow: 0 0 26px -6px rgba(34, 230, 255, .6);
}
.about-who strong { display: block; font-size: 18px; font-weight: 700; color: var(--text-strong); }
.about-who span { font-size: 13px; color: var(--dim); }
.about-text { margin-top: 16px; color: var(--dim); font-size: 14.5px; max-width: 52ch; }
.about-stats { margin-top: 22px; display: flex; gap: 12px; flex-wrap: wrap; }
.stat { padding: 12px 18px; border-radius: 13px; border: 1px solid var(--line); background: rgba(255,255,255,.04); min-width: 104px; }
.stat b { display: block; font-size: 22px; font-weight: 800; color: var(--cyan); letter-spacing: -.5px; }
.stat span { font: 500 10.5px/1 var(--mono); letter-spacing: 1.6px; color: var(--dim-2); }

.about-side .sec-num { display: block; margin-bottom: 16px; }
.contact-list { display: grid; gap: 10px; }
.contact-item {
  display: flex; align-items: center; gap: 12px; padding: 13px 15px; border-radius: 13px;
  background: var(--panel); border: 1px solid var(--line); transition: all .22s var(--ease);
}
.contact-item:hover { background: var(--panel-2); border-color: var(--line-strong); transform: translateX(3px); }
.ci-icon {
  width: 34px; height: 34px; flex: none; display: grid; place-items: center; border-radius: 10px;
  background: rgba(34, 230, 255, .1); border: 1px solid rgba(34, 230, 255, .22); color: var(--cyan); font-size: 15px;
}
.ci-text { min-width: 0; }
.ci-label { font: 500 10.5px/1.4 var(--mono); letter-spacing: 1.4px; color: var(--dim-2); display: block; }
.ci-value { font-weight: 600; color: var(--text-strong); font-size: 14.5px; word-break: break-all; }
.contact-item.is-copy { cursor: pointer; position: relative; }
.contact-item.is-copy::after {
  content: "复制"; font: 500 10px/1 var(--mono); color: var(--dim-2);
  border: 1px solid var(--line); border-radius: 6px; padding: 4px 6px; margin-left: auto; flex: none;
}
.contact-item.is-copy:hover::after { color: var(--cyan); border-color: rgba(34, 230, 255, .4); }
.about-note { margin-top: 16px; font-size: 12.5px; color: var(--dim-2); }

/* ------------------------- Join Me ------------------------- */
.join { padding: 82px 24px 96px; }
.join-box {
  position: relative; border-radius: 26px; padding: 40px; overflow: hidden;
  background: linear-gradient(150deg, rgba(34,230,255,.08), rgba(123,108,255,.07) 52%, rgba(255,107,157,.05));
  border: 1px solid var(--line);
}
.join-box::before {
  content: ""; position: absolute; width: 420px; height: 420px; border-radius: 50%;
  top: -210px; right: -130px; filter: blur(90px); background: radial-gradient(circle, rgba(123,108,255,.4), transparent 70%);
}
.join-box::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 70% 70% at 80% 20%, #000, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 80% 20%, #000, transparent 80%);
}
.join-box > * { position: relative; z-index: 1; }
.join .sec-head { margin-bottom: 24px; }
.join-title { font-size: clamp(28px, 4.6vw, 44px); }

.join-channels { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; }
.join-card {
  display: flex; align-items: center; gap: 13px; padding: 17px;
  border-radius: 15px; background: rgba(5, 7, 13, .5); border: 1px solid var(--line); transition: all .25s var(--ease);
}
.join-card:hover { transform: translateY(-3px); border-color: var(--line-strong); background: rgba(5, 7, 13, .72); }
.jc-icon {
  width: 42px; height: 42px; flex: none; border-radius: 12px; display: grid; place-items: center;
  font-size: 19px; color: #fff; background: linear-gradient(135deg, var(--a1), var(--a2)); box-shadow: 0 8px 22px -10px var(--a1);
}
.jc-label { font-weight: 700; color: var(--text-strong); font-size: 15px; }
.jc-hint { font: 400 12px/1.5 var(--mono); color: var(--dim-2); }
.jc-arrow { margin-left: auto; color: var(--dim-2); font-family: var(--mono); transition: transform .22s var(--ease), color .22s; }
.join-card:hover .jc-arrow { color: var(--cyan); transform: translate(3px, -3px); }

.join-steps { margin-top: 30px; }
.join-steps h3 { font-size: 15px; font-weight: 700; margin-bottom: 13px; }
.join-steps ol { display: grid; gap: 10px; counter-reset: step; }
.join-steps li { position: relative; padding-left: 42px; color: var(--dim); font-size: 14px; counter-increment: step; }
.join-steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute; left: 0; top: 1px; width: 28px; height: 26px; display: grid; place-items: center;
  font: 600 11px/1 var(--mono); color: var(--cyan);
  background: rgba(34, 230, 255, .09); border: 1px solid rgba(34, 230, 255, .26); border-radius: 8px;
}
.join-note { margin-top: 20px; font-size: 12.5px; color: var(--dim-2); }

/* ------------------------- 页脚 ------------------------- */
.footer { border-top: 1px solid var(--line); background: rgba(5, 7, 13, .6); position: relative; z-index: 1; }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; padding-top: 30px; padding-bottom: 30px; }
.footer-brand { font-weight: 800; font-size: 17px; color: var(--text-strong); }
.footer-brand span { font-weight: 500; font-size: 13px; color: var(--dim-2); }
.footer-inner > div > p { margin-top: 7px; color: var(--dim-2); font-size: 13px; }
.footer-links { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; font-size: 13px; color: var(--dim); }
.footer-links a:hover { color: var(--cyan); }
.footer-links span { color: var(--dim-2); font-family: var(--mono); font-size: 12px; }

/* ------------------------- Toast / 二维码 ------------------------- */
.toast {
  position: fixed; left: 50%; bottom: 32px; transform: translate(-50%, 20px);
  padding: 11px 20px; border-radius: 12px; font-size: 14px; font-weight: 600;
  background: rgba(12, 20, 34, .96); border: 1px solid rgba(34, 230, 255, .35); color: var(--cyan);
  box-shadow: 0 18px 40px -20px rgba(0,0,0,.9); opacity: 0; pointer-events: none; transition: all .28s var(--ease); z-index: 300;
}
.toast.is-show { opacity: 1; transform: translate(-50%, 0); }

.qr-pop {
  position: fixed; z-index: 260; width: 200px; padding: 14px; border-radius: 16px;
  background: rgba(10, 16, 28, .97); border: 1px solid var(--line-strong);
  box-shadow: 0 24px 60px -24px rgba(0,0,0,.95); text-align: center;
  opacity: 0; transform: translateY(8px) scale(.96); transition: all .2s var(--ease); pointer-events: none;
}
.qr-pop.is-show { opacity: 1; transform: none; }
.qr-pop img { width: 100%; border-radius: 10px; background: #fff; }
.qr-ph { height: 168px; display: grid; place-items: center; border-radius: 10px; border: 1px dashed var(--line-strong); color: var(--dim-2); font-size: 12px; line-height: 1.7; padding: 10px; }
.qr-cap { margin-top: 10px; font-size: 12.5px; font-weight: 600; color: var(--text-strong); }

/* ------------------------- 响应式 ------------------------- */
@media (max-width: 1020px) {
  .show-grid { grid-template-columns: 1fr; grid-template-rows: none; }
  .sc-main { grid-row: auto; }
  .sc-sub .sc-art { height: 108px; }
  .about-card { grid-template-columns: 1fr; }
  .about-side { border-left: 0; border-top: 1px solid var(--line); }
}

@media (max-width: 720px) {
  body { font-size: 14.5px; }
  .wrap, .hero, .works, .about, .join { padding-left: 18px; padding-right: 18px; }

  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 64px; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch;
    gap: 2px; padding: 10px 18px 16px; background: rgba(6, 9, 16, .98);
    border-bottom: 1px solid var(--line); backdrop-filter: blur(14px);
  }
  .nav-links.is-open { display: flex; }
  .nav-links a { padding: 11px 12px; border-radius: 10px; font-size: 15px; }
  .nav-gh { margin-left: 0; text-align: center; }

  .hero { padding-top: 40px; padding-bottom: 24px; }
  .hero-title { font-size: clamp(40px, 13vw, 60px); }
  .hero-bio { font-size: 14.5px; }
  .showcase { margin-top: 36px; }
  .sc-main .sc-art { height: 168px; }
  .sc-glyph { font-size: 66px; }
  .grid { grid-template-columns: 1fr; }
  .works { padding-top: 40px; }
  .about { padding-top: 56px; }
  .about-main, .about-side { padding: 26px 22px; }
  .about-stats { gap: 8px; }
  .stat { flex: 1; min-width: 92px; padding: 10px 14px; }
  .join { padding-top: 56px; padding-bottom: 64px; }
  .join-box { padding: 26px 20px; border-radius: 20px; }
  .join-channels { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}