/* ============================================================
   HyperFrames 视觉系统 theme.css
   绚丽多彩 · H5 / PC 自适应 · 共享于三个页面
   每页通过 <html style="--acc:主色;--acc2:辅色"> 换肤
   ============================================================ */

/* ---------- 1. 设计令牌（对齐 NEON MOTION showcase 五色） ---------- */
:root{
  /* 每页覆盖这三个即可换肤 */
  --acc:#00e5ff;    /* cyan   */
  --acc2:#7c4dff;   /* violet */
  --acc3:#ff2d94;   /* magenta */
  --mag:#ff2d94;
  --cyan:#00e5ff;
  --violet:#7c4dff;
  --gold:#ffd93d;
  --mint:#00ffa3;

  --bg:#05070f;
  --deep:#05070f;
  --bg2:#0a0d1c;
  --ink:#eaf0ff;
  --dim:#93a4c8;
  --ink2:#b8c0dc;
  --ink3:#7e87a8;
  --line:rgba(255,255,255,.10);
  --line2:rgba(255,255,255,.06);
  --surface:rgba(255,255,255,.045);
  --surface2:rgba(255,255,255,.075);

  --ok:#34d399;
  --warn:#fbbf24;
  --bad:#fb7185;

  --r-s:10px; --r-m:16px; --r-l:22px; --r-xl:30px;
  --sp:clamp(14px,3.2vw,26px);
  --maxw:1180px;
  --shadow:0 24px 60px -18px rgba(0,0,0,.75);
  --blur:saturate(150%) blur(14px);
  --ease:cubic-bezier(.22,1,.36,1);

  --grad:linear-gradient(120deg,var(--acc),var(--acc2) 55%,var(--acc3));
  --font:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
}

/* ---------- 2. 基础 ---------- */
*,*::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(--font); font-size:16px; line-height:1.55;
  letter-spacing:.01em; overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before,body::after{content:"";position:fixed;inset:0;pointer-events:none;z-index:0}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.16;letter-spacing:-.02em;font-weight:900}
h1{font-size:clamp(30px,7vw,58px)}
h2{font-size:clamp(21px,3.6vw,30px)}
h3{font-size:clamp(17px,2.4vw,21px);font-weight:800}
h4{font-size:16px;font-weight:800}
p{margin:0 0 .9em}
a{color:var(--acc);text-decoration:none;transition:color .2s}
b,strong{color:#fff;font-weight:700}
ul,ol{margin:0 0 .9em;padding-left:1.2em}
li{margin:.28em 0}
small{font-size:12px}
img{max-width:100%;height:auto;display:block}
[hidden]{display:none!important}

/* 渐变流动文字 */
.grad{
  background:var(--grad);
  background-size:220% 100%;
  -webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
  animation:flow 9s var(--ease) infinite;
}
@keyframes flow{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
.grad-static{
  background:linear-gradient(100deg,var(--acc),var(--acc2) 60%,var(--acc3));
  -webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent;
}

/* ---------- 3. 动态背景（对齐 showcase：大光球 + 网格 + 暗角） ---------- */
.bg-layer{
  position:fixed;inset:0;z-index:-2;pointer-events:none;overflow:hidden;
  background:var(--deep);
}
/* 四个大光球：blur + screen 叠加，缓慢漂移 */
.orb{
  position:absolute;border-radius:50%;filter:blur(90px);
  opacity:.55;mix-blend-mode:screen;will-change:transform;
}
.orb-a{width:620px;height:620px;left:-140px;top:-160px;
  background:radial-gradient(circle,var(--acc3),transparent 68%);
  animation:orbA 18s ease-in-out infinite alternate}
.orb-b{width:700px;height:700px;right:-180px;top:8%;
  background:radial-gradient(circle,var(--acc),transparent 68%);
  animation:orbB 22s ease-in-out infinite alternate}
.orb-c{width:560px;height:560px;left:26%;bottom:-200px;
  background:radial-gradient(circle,var(--acc2),transparent 68%);
  animation:orbC 20s ease-in-out infinite alternate}
.orb-d{width:420px;height:420px;right:16%;bottom:6%;opacity:.34;
  background:radial-gradient(circle,var(--gold),transparent 70%);
  animation:orbD 16s ease-in-out infinite alternate}
@keyframes orbA{from{transform:none}to{transform:translate3d(180px,120px,0) scale(1.16)}}
@keyframes orbB{from{transform:none}to{transform:translate3d(-200px,90px,0) scale(1.2)}}
@keyframes orbC{from{transform:none}to{transform:translate3d(160px,-130px,0) scale(1.12)}}
@keyframes orbD{from{transform:none}to{transform:translate3d(-140px,-90px,0)}}
/* 网格：中心亮、四周淡出，带边界线 */
.bg-grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(120,160,255,.5) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,160,255,.5) 1px,transparent 1px);
  background-size:64px 64px;opacity:.16;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 40%,#000 30%,transparent 100%);
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 40%,#000 30%,transparent 100%);
}
/* 上下的压暗纱，把内容从背景里托出来 */
.bg-veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,15,.6),transparent 22%,transparent 76%,rgba(5,7,15,.75));
}
/* 暗角 */
.bg-vig{
  position:absolute;inset:0;
  background:radial-gradient(ellipse 120% 90% at 50% 50%,transparent 40%,rgba(3,5,12,.86) 100%);
}
/* 颗粒（极淡，只加质感） */
.bg-grain{
  position:absolute;inset:0;z-index:9000;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grain 6s steps(6) infinite;
}
@keyframes grain{
  0%{transform:translate(0,0)}20%{transform:translate(-3%,2%)}40%{transform:translate(2%,-3%)}
  60%{transform:translate(-2%,-2%)}80%{transform:translate(3%,1%)}100%{transform:translate(0,0)}
}

/* ---------- 4. 布局 ---------- */
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--sp);position:relative;z-index:2}
.sect{padding:clamp(38px,7vw,86px) 0;position:relative;z-index:2}
.sect.tight{padding:clamp(24px,4vw,44px) 0}
.center{text-align:center}

/* ---------- 5. 卡片：玻璃 + 流光描边 ---------- */
.card{
  position:relative; margin:0 0 18px; padding:clamp(16px,2.6vw,26px);
  border-radius:var(--r-l);
  background:linear-gradient(160deg,rgba(255,255,255,.085),rgba(255,255,255,.028));
  border:1px solid var(--line);
  backdrop-filter:var(--blur); -webkit-backdrop-filter:var(--blur);
  box-shadow:var(--shadow);
  transition:transform .45s var(--ease),border-color .45s,box-shadow .45s;
  overflow:hidden;
}
/* 顶部渐变高光 */
.card::before{
  content:"";position:absolute;top:0;left:8%;right:8%;height:1px;
  background:linear-gradient(90deg,transparent,var(--acc),var(--acc2),transparent);
  opacity:.75;
}
/* 悬停光圈（PC） */
.card::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(340px circle at var(--mx,50%) var(--my,0%),rgba(255,255,255,.10),transparent 60%);
  opacity:0;transition:opacity .35s;
}
@media (hover:hover){
  .card:hover{transform:translateY(-4px);border-color:color-mix(in srgb,var(--acc) 42%,transparent)}
  .card:hover::after{opacity:1}
}
.card h2,.card h3{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
/* 序号徽标 */
.no{
  flex:0 0 auto;width:30px;height:30px;border-radius:10px;display:inline-grid;place-items:center;
  background:var(--grad);color:#05060f;font-size:15px;font-weight:900;
  box-shadow:0 8px 22px -6px color-mix(in srgb,var(--acc) 60%,transparent);
}
.hint{color:var(--ink3);font-size:13.5px;line-height:1.7;margin:.25em 0 .8em}
.hint b{color:var(--ink2)}

/* 面板 / 分区 */
.panel{display:none}
.panel.active{display:block;animation:panelIn .5s var(--ease)}
@keyframes panelIn{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}

/* ---------- 6. 按钮（对齐 showcase 胶囊 + 高饱和渐变） ---------- */
.btn{
  appearance:none;border:none;cursor:pointer;
  font-family:inherit;font-size:15px;font-weight:700;letter-spacing:.02em;
  border-radius:999px;padding:15px 34px;color:var(--ink);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  position:relative;overflow:hidden;
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  transition:transform .25s var(--ease),box-shadow .25s,border-color .25s,background .25s;
}
/* 主按钮：深字 + 高饱和渐变（showcase 的方向） */
.btn.pri{
  color:#0b0413;border:none;
  background:linear-gradient(100deg,var(--acc),var(--acc2) 55%,var(--acc3));
  box-shadow:0 12px 44px rgba(124,77,255,.5);
}
.btn.pri:hover{transform:translateY(-3px);
  box-shadow:0 18px 54px rgba(124,77,255,.62)}
.btn.pri:active{transform:translateY(0) scale(.98)}
.btn.ghost:hover{border-color:rgba(255,255,255,.34);background:rgba(255,255,255,.11);transform:translateY(-2px)}
.btn.sm{padding:9px 20px;font-size:13.5px}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}
/* 扫光 */
.btn::after{
  content:"";position:absolute;top:0;bottom:0;width:40%;left:-60%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.42),transparent);
  transform:skewX(-18deg);
}
.btn.pri::after{background:linear-gradient(100deg,transparent,rgba(255,255,255,.55),transparent)}
.btn:hover::after{animation:sweep .7s var(--ease)}
@keyframes sweep{to{left:130%}}
.minibtn{
  appearance:none;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.05);color:var(--ink);
  padding:9px 17px;border-radius:999px;font-size:13.5px;font-weight:700;cursor:pointer;font-family:inherit;
  transition:transform .22s var(--ease),border-color .22s,background .22s,color .22s;
}
.minibtn:hover{transform:translateY(-2px);border-color:var(--acc);background:rgba(255,255,255,.1);color:#fff}
.minirow{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-start}

/* ---------- 6b. kicker（章节小标，showcase 同款） ---------- */
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--acc);font-weight:700;margin-bottom:22px;line-height:1.4;
}
.kicker::before{content:"";width:34px;height:1px;background:linear-gradient(90deg,transparent,var(--acc))}
.kicker::after{content:"";width:6px;height:6px;border-radius:50%;background:var(--acc);
  box-shadow:0 0 14px var(--acc);flex:0 0 auto}

/* ---------- 6c. badge / chip（showcase 同款细边胶囊） ---------- */
.badge{
  display:inline-flex;align-items:center;
  font-size:13px;color:var(--dim);padding:8px 16px;border-radius:999px;
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);
}
.chip,.tag,.pill,.lv{
  display:inline-flex;align-items:center;gap:5px;
  padding:5px 13px;border-radius:999px;font-size:12px;font-weight:700;
  border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.05);color:var(--ink);
  white-space:nowrap;line-height:1.5;
}
.chip.lit{
  border-color:rgba(255,255,255,.3);
  background:rgba(255,255,255,.1);
  color:#fff;
}

/* ---------- 7. 表单件 ---------- */
label.f{display:block;margin:0 0 12px}
label.f > span,.f > label{display:block;font-size:13px;color:var(--ink3);margin-bottom:5px;font-weight:600;letter-spacing:.04em}
input[type=text],input[type=number],input[type=email],select,textarea{
  width:100%;font-family:inherit;font-size:15.5px;color:var(--ink);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  padding:11px 14px;border-radius:12px;outline:none;
  transition:border-color .25s,box-shadow .25s,background .25s;
}
input:focus,select:focus,textarea:focus{
  border-color:color-mix(in srgb,var(--acc) 70%,transparent);
  box-shadow:0 0 0 4px color-mix(in srgb,var(--acc) 16%,transparent);
  background:rgba(255,255,255,.075);
}
select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink3) 50%),linear-gradient(135deg,var(--ink3) 50%,transparent 50%);
  background-position:calc(100% - 19px) 50%,calc(100% - 14px) 50%;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:38px}
option{background:#12162a;color:var(--ink)}
textarea{resize:vertical;min-height:88px;line-height:1.7}
input[type=checkbox]{
  appearance:none;width:19px;height:19px;flex:0 0 auto;margin:0;cursor:pointer;
  border:1.5px solid rgba(255,255,255,.28);border-radius:6px;
  background:rgba(255,255,255,.05);position:relative;transition:.2s;
}
input[type=checkbox]:checked{
  background:var(--grad);border-color:transparent;
  box-shadow:0 6px 16px -6px color-mix(in srgb,var(--acc) 80%,transparent);
}
input[type=checkbox]:checked::after{
  content:"";position:absolute;left:5px;top:1.5px;width:6px;height:11px;
  border:solid #05060f;border-width:0 2.5px 2.5px 0;transform:rotate(42deg);
}
input[type=checkbox]:disabled{opacity:.5;cursor:not-allowed}

/* ---------- 8. 徽标 / 标签 ---------- */
.chip,.tag,.pill,.lv{
  display:inline-flex;align-items:center;gap:5px;
  padding:3px 11px;border-radius:999px;font-size:12px;font-weight:700;
  border:1px solid var(--line);background:var(--surface);color:var(--ink2);white-space:nowrap;
}
.chip.lit{
  border-color:color-mix(in srgb,var(--acc) 55%,transparent);
  background:color-mix(in srgb,var(--acc) 14%,transparent);
  color:color-mix(in srgb,var(--acc) 78%,#fff);
}
.pill.a{background:color-mix(in srgb,var(--ok) 18%,transparent);color:#6ee7b7;border-color:color-mix(in srgb,var(--ok) 40%,transparent)}
.pill.b{background:color-mix(in srgb,var(--warn) 16%,transparent);color:#fcd34d;border-color:color-mix(in srgb,var(--warn) 40%,transparent)}
.pill.d{background:color-mix(in srgb,var(--bad) 14%,transparent);color:#fda4af;border-color:color-mix(in srgb,var(--bad) 38%,transparent)}
.lv.hi{background:linear-gradient(90deg,color-mix(in srgb,var(--acc) 26%,transparent),color-mix(in srgb,var(--acc2) 26%,transparent));color:#fff;border-color:transparent}
.lv.mid{background:color-mix(in srgb,var(--acc2) 20%,transparent);color:#ddd6fe;border-color:color-mix(in srgb,var(--acc2) 42%,transparent)}

/* ---------- 9. 表格 ---------- */
.tw{overflow-x:auto;margin:0 0 14px;border-radius:var(--r-m);border:1px solid var(--line2);-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;font-size:14px;min-width:620px}
thead th{
  text-align:left;font-size:12.5px;letter-spacing:.06em;color:var(--ink3);font-weight:700;
  padding:12px 14px;background:rgba(255,255,255,.045);border-bottom:1px solid var(--line);
  position:sticky;top:0;
}
tbody td{padding:11px 14px;border-bottom:1px solid var(--line2);vertical-align:top}
tbody tr:last-child td{border-bottom:0}
tbody tr{transition:background .22s}
tbody tr:hover{background:rgba(255,255,255,.04)}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
tr.hl{background:linear-gradient(90deg,color-mix(in srgb,var(--acc) 10%,transparent),transparent)}
.stars{color:var(--warn);letter-spacing:1px}
.empty{text-align:center;padding:34px 20px;color:var(--ink3)}

/* ---------- 10. 注意/提示框 ---------- */
.box{
  border-radius:var(--r-m);padding:13px 16px;margin:12px 0;
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--acc);
  font-size:14px;line-height:1.75;
}
.box.ok{border-left-color:var(--ok);background:color-mix(in srgb,var(--ok) 9%,transparent)}
.box.warn{border-left-color:var(--warn);background:color-mix(in srgb,var(--warn) 9%,transparent)}
.box.bad{border-left-color:var(--bad);background:color-mix(in srgb,var(--bad) 9%,transparent)}
.box .bt{font-weight:800;margin-bottom:4px;color:#fff}

/* ---------- 11. 进度 / 条 ---------- */
.bar{height:8px;border-radius:999px;background:rgba(255,255,255,.09);overflow:hidden}
.bar > i{
  display:block;height:100%;border-radius:999px;background:var(--grad);
  transition:width .7s var(--ease);
  box-shadow:0 0 18px -2px color-mix(in srgb,var(--acc) 70%,transparent);
}

/* ---------- 12. 数字 / 统计 ---------- */
.num.big{font-size:clamp(26px,5vw,40px);font-weight:900;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
/* 数据卡：showcase 同款 —— 半透明 + 底部彩色条 */
.stat{
  border:1px solid rgba(255,255,255,.1);border-radius:var(--r-m);padding:18px 16px;
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.02));
  margin-bottom:12px;position:relative;overflow:hidden;text-align:left;
}
.stat::after{content:"";position:absolute;inset:auto -30% -60% -30%;height:120px;
  background:radial-gradient(ellipse at center,rgba(255,255,255,.16),transparent 70%);pointer-events:none}
.stat b,.stat .nb{
  display:block;font-size:clamp(24px,3.4vw,34px);font-weight:900;line-height:1.1;
  margin-bottom:6px;letter-spacing:-.02em;font-variant-numeric:tabular-nums;
  background:linear-gradient(120deg,var(--acc),var(--acc3));
  -webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent;
}
.stat small{font-size:12.5px;color:var(--dim);letter-spacing:.04em;line-height:1.6;display:block}
/* 底部彩色进度条（showcase 的 stat-bar） */
.stat-bar{height:5px;border-radius:99px;background:rgba(255,255,255,.09);
  overflow:hidden;margin-top:14px}
.stat-bar > span{display:block;height:100%;width:0;border-radius:99px;
  background:linear-gradient(90deg,var(--acc),var(--acc3));transition:width .9s var(--ease)}

/* ---------- 13. 进场动画 ---------- */
.rv{opacity:0;transform:translateY(22px) scale(.985);filter:blur(4px);
  transition:opacity .6s var(--ease),transform .6s var(--ease),filter .6s var(--ease)}
.rv.in{opacity:1;transform:none;filter:none}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .rv{opacity:1;transform:none;filter:none}
}

/* ---------- 14. 分隔流光 ---------- */
.rule{height:1px;border:0;margin:30px 0;position:relative;overflow:hidden}
.rule::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,var(--acc),var(--acc2),var(--acc3),transparent);
  background-size:200% 100%;animation:flow 7s linear infinite;opacity:.75;
}

/* ---------- 15. 页头 / 页脚 ---------- */
.hero{position:relative;padding:clamp(46px,9vw,110px) 0 clamp(30px,5vw,58px);text-align:center;z-index:2}
.hero .lede{font-size:clamp(15px,2.2vw,19px);color:var(--ink2);max-width:56ch;margin:14px auto 0;line-height:1.85}
.hero .cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:26px}
.foot{padding:34px 0 60px;text-align:center;color:var(--ink3);font-size:13px;border-top:1px solid var(--line2);position:relative;z-index:2;margin-top:40px}
.navbar{
  position:sticky;top:0;z-index:60;display:flex;align-items:center;gap:10px;
  padding:11px var(--sp);
  background:color-mix(in srgb,var(--bg2) 78%,transparent);
  backdrop-filter:var(--blur);-webkit-backdrop-filter:var(--blur);
  border-bottom:1px solid var(--line2);
}
.navbar .sp{flex:1;text-align:center;font-size:13px;color:var(--ink3)}
/* brand（showcase 顶栏同款：30×30 圆角渐变方块） */
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:17px;letter-spacing:.04em}
.brand-mark{
  width:30px;height:30px;border-radius:9px;display:grid;place-items:center;flex:0 0 auto;
  font-size:13px;font-weight:900;color:#0b0413;
  background:linear-gradient(135deg,var(--acc),var(--acc2) 50%,var(--acc3));
  box-shadow:0 6px 22px rgba(124,77,255,.5);
}
.navbtn{
  appearance:none;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.05);color:var(--ink);
  padding:13px 28px;border-radius:999px;font-size:15px;font-weight:700;cursor:pointer;font-family:inherit;
  letter-spacing:.02em;transition:transform .24s var(--ease),box-shadow .24s,border-color .24s,background .24s;
}
.navbtn.pri{
  color:#0b0413;border:none;
  background:linear-gradient(100deg,var(--acc),var(--acc2) 55%,var(--acc3));
  box-shadow:0 12px 44px rgba(124,77,255,.5);
}
.navbtn.pri:hover{transform:translateY(-3px);box-shadow:0 18px 54px rgba(124,77,255,.62)}
.navbtn:hover{transform:translateY(-2px);border-color:var(--acc);background:rgba(255,255,255,.1)}
.navbtn:disabled{opacity:.35;cursor:not-allowed;transform:none}

/* ---------- 15b. 站点级导航（三页互通，各页用 .on 标记当前页）---------- */
.sitenav{
  position:relative;z-index:3;
  display:flex;gap:8px;justify-content:center;flex-wrap:wrap;
  padding:14px var(--sp) 0;
}
.sitenav a{
  padding:7px 16px;border-radius:999px;font-size:13.5px;font-weight:700;
  color:var(--ink2);border:1px solid var(--line);background:var(--surface);
  backdrop-filter:var(--blur);-webkit-backdrop-filter:var(--blur);
  transition:transform .22s var(--ease),color .22s,border-color .22s,background .22s;
}
.sitenav a:hover{transform:translateY(-2px);color:#fff;border-color:color-mix(in srgb,var(--acc) 55%,transparent)}
.sitenav a.on{
  background:var(--grad);color:#05060f;border-color:transparent;
  box-shadow:0 10px 24px -12px color-mix(in srgb,var(--acc) 85%,transparent);
}
@media(max-width:760px){
  /* 小屏：六个链接改为换行（一行 3 个、共两行），避免 6 等分把长标题挤成省略号 */
  .sitenav{padding:12px 6px 0;gap:6px;flex-wrap:wrap}
  .sitenav a{flex:1 1 calc(33.33% - 6px);min-width:0;padding:6px 4px;font-size:11.5px;
    letter-spacing:0;justify-content:center;text-align:center;
    white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
}
@media(max-width:340px){
  /* 超窄屏（如 iPhone SE 320px）：按内容宽度排布，避免长标题被截断 */
  .sitenav{gap:5px}
  .sitenav a{flex:0 1 auto}
}

/* ---------- 16. 手机适配 ---------- */
@media (max-width:760px){
  body{font-size:15.5px}
  :root{--r-l:18px;--r-xl:22px}
  .btn{padding:13px 24px;font-size:15px}
  .orb{filter:blur(66px);opacity:.5}
  .orb-a{width:320px;height:320px;left:-130px;top:-120px}
  .orb-b{width:340px;height:340px;right:-140px;top:6%}
  .orb-c{width:280px;height:280px;left:14%;bottom:-160px}
  .orb-d{width:220px;height:220px;right:8%;bottom:4%}
  .bg-grid{background-size:44px 44px}
  table{font-size:13.5px}
  thead th,tbody td{padding:10px 11px}
  .hero{padding-top:38px}
  .navbar .sp{display:none}
  .no{width:26px;height:26px;font-size:13.5px}
}
@media (max-width:400px){
  .btn{padding:11px 16px;font-size:14px}
  .chip,.tag{padding:3px 9px;font-size:11.5px}
}

/* ---------- 17. 打印 / PDF（导出 Word 与打印必须浅色） ---------- */
@media print{
  :root{
    --acc:#1d4ed8;--acc2:#7c3aed;--acc3:#be185d;
    --bg:#fff;--bg2:#fff;--ink:#111;--ink2:#333;--ink3:#666;
    --line:#dcdcdc;--line2:#e8e8e8;--surface:#fff;--surface2:#fafafa;
  }
  body{background:#fff;color:#111;font-size:11.5pt;line-height:1.65}
  body::before,body::after,.bg-layer,.bg-grid,.bg-grain,.bg-veil,.bg-vig,.orb,
  .btn::after{display:none!important}
  .wrap{max-width:none;padding:0}
  .bg-layer,.bg-grid,.bg-grain{display:none!important}
  .card{
    background:#fff;border:1px solid #ddd;box-shadow:none;border-radius:8px;
    page-break-inside:avoid;break-inside:avoid;
  }
  .card::before,.card::after{display:none!important}
  .card:hover{transform:none}
  .rv{opacity:1!important;transform:none!important;filter:none!important}
  .panel{display:block!important}
  .no{background:#111;color:#fff}
  .grad,.grad-static{-webkit-text-fill-color:#111;color:#111;background:none;animation:none}
  .btn,.navbtn,.minibtn,.navbar,.sitenav,.bg-swap{display:none!important}
  .tw{overflow:visible}
  table{min-width:0;font-size:10pt}
  thead th{background:#f4f4f4;color:#111;border-bottom:1px solid #ccc}
  tbody td{border-bottom:1px solid #eee}
  a{color:#111}
}