/* DRAGON77 — 左右分栏·对开双柱骨架（.dg- 前缀，全新手写，龙渊深蓝/朱龙红/中缝金光） */

:root{
  --dg-bg:#101828;
  --dg-bg2:#0B111E;
  --dg-panel:#16213A;
  --dg-panel2:#0D1526;
  --dg-acc:#E8452E;
  --dg-acc2:#C93520;
  --dg-gold:#F2C14E;
  --dg-goldim:rgba(242,193,78,.28);
  --dg-ink:#E7ECF5;
  --dg-mut:#9AA7C2;
  --dg-font-d:"Ruslan Display",system-ui,sans-serif;
  --dg-font-b:"Wix Madefor Text",system-ui,sans-serif;
}

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

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

body{
  margin:0;
  min-width:0;
  background:
    radial-gradient(1100px 460px at 50% -140px,rgba(232,69,46,.16),transparent 70%),
    radial-gradient(900px 420px at 85% 8%,rgba(242,193,78,.07),transparent 70%),
    linear-gradient(180deg,var(--dg-bg) 0%,var(--dg-bg2) 100%);
  background-color:var(--dg-bg);
  color:var(--dg-ink);
  font-family:var(--dg-font-b);
  font-size:16.5px;
  line-height:1.72;
  padding-bottom:104px; /* ruang untuk floating bar */
  overflow-wrap:break-word;
}

img{max-width:100%;height:auto;border:0;}

a{color:var(--dg-gold);text-decoration:none;}
a:hover{color:#FFDD8A;}
a:focus-visible,button:focus-visible,sumamry:focus-visible{outline:2px solid var(--dg-gold);outline-offset:2px;}

h1,h2,h3{
  font-family:var(--dg-font-d);
  font-weight:400;
  line-height:1.22;
  letter-spacing:.01em;
  color:#F4F7FD;
  margin:0 0 .55em;
  min-width:0;
}
h1{font-size:clamp(1.72rem,3.6vw,2.6rem);}
h2{font-size:clamp(1.34rem,2.6vw,1.85rem);}
h3{font-size:1.06rem;font-family:var(--dg-font-b);font-weight:600;letter-spacing:.01em;}

p{margin:0 0 1.05em;min-width:0;}

/* ============ header ============ */

.dg-head{
  position:relative;
  z-index:50;
  border-bottom:1px solid var(--dg-goldim);
  background:linear-gradient(180deg,rgba(13,21,38,.94),rgba(13,21,38,.82));
  box-shadow:0 6px 26px rgba(4,8,18,.55);
}
.dg-headin{
  max-width:1120px;margin:0 auto;padding:12px 20px;
  display:flex;align-items:center;gap:18px;min-width:0;
}
.dg-logo{
  display:inline-flex;align-items:center;gap:10px;min-width:0;
  color:#F4F7FD;font-family:var(--dg-font-d);font-size:1.3rem;letter-spacing:.04em;
}
.dg-logo:hover{color:#fff;}
.dg-logo-door{
  position:relative;flex:0 0 auto;
  width:34px;height:40px;
  border:2px solid var(--dg-gold);
  border-radius:17px 17px 3px 3px;
  background:linear-gradient(180deg,#1B2A4A,#0D1526);
  box-shadow:0 0 12px rgba(242,193,78,.35);
}
.dg-logo-door::before{ /* 中缝 */
  content:"";position:absolute;top:6px;bottom:4px;left:50%;width:2px;
  background:var(--dg-gold);opacity:.55;transform:translateX(-50%);
}
.dg-logo-door i{position:absolute;top:55%;width:4px;height:4px;border-radius:50%;background:var(--dg-acc);}
.dg-logo-door i:first-of-type{left:6px;box-shadow:0 0 6px var(--dg-acc);}
.dg-logo-door i:last-of-type{right:6px;box-shadow:0 0 6px var(--dg-acc);}
.dg-logo-word{white-space:nowrap;}
.dg-logo-word b{color:var(--dg-acc);font-weight:400;}

.dg-nav{display:flex;gap:6px;margin-left:auto;min-width:0;}
.dg-nav a{
  padding:8px 13px;border-radius:10px;border:1px solid transparent;
  color:var(--dg-mut);font-weight:500;font-size:.95rem;white-space:nowrap;
}
.dg-nav a:hover{color:var(--dg-ink);border-color:var(--dg-goldim);}
.dg-nav a.dg-on{color:var(--dg-gold);border-color:var(--dg-goldim);background:rgba(242,193,78,.06);}

.dg-hact{display:flex;gap:10px;margin-left:6px;}

/* 汉堡 */
.dg-burger{
  display:none;margin-left:auto;cursor:pointer;padding:8px;
  flex-direction:column;gap:5px;border:1px solid var(--dg-goldim);border-radius:10px;
}
.dg-burger span{display:block;width:22px;height:2px;background:var(--dg-gold);border-radius:2px;}
.dg-navtog{position:absolute;opacity:0;pointer-events:none;}
.dg-mnav{
  display:none;padding:6px 20px 16px;
  border-top:1px dashed rgba(154,167,194,.22);
}
.dg-mnav .dg-mgrp h3{
  margin:14px 0 4px;color:var(--dg-gold);font-family:var(--dg-font-d);font-weight:400;
  font-size:.95rem;letter-spacing:.14em;text-transform:uppercase;
}
.dg-mnav .dg-mgrp a{
  display:block;padding:6px 2px;color:var(--dg-ink);border-bottom:1px solid rgba(154,167,194,.12);
}
.dg-navtog:checked ~ .dg-mnav{display:block;}

/* ============ 按钮 ============ */

.dg-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 20px;border-radius:12px;
  font-family:var(--dg-font-b);font-weight:600;font-size:.95rem;line-height:1.3;
  border:1px solid transparent;cursor:pointer;min-width:0;
}
.dg-btn-main{
  background:linear-gradient(180deg,var(--dg-acc),var(--dg-acc2));
  color:#FFF6EC;border-color:rgba(255,220,180,.25);
  box-shadow:0 6px 20px rgba(232,69,46,.36),inset 0 1px 0 rgba(255,255,255,.18);
}
.dg-btn-main:hover{color:#fff;filter:brightness(1.07);}
.dg-btn-ghost{
  background:rgba(242,193,78,.05);color:var(--dg-gold);
  border-color:var(--dg-goldim);
}
.dg-btn-ghost:hover{background:rgba(242,193,78,.11);}

/* ============ hero：对开双柱 ============ */

.dg-hero{
  position:relative;
  padding:clamp(30px,5vw,58px) 20px 10px;
  max-width:1180px;margin:0 auto;min-width:0;
}
.dg-lintel{text-align:center;margin-bottom:clamp(18px,3vw,30px);min-width:0;}
.dg-lintel-cap{
  display:inline-block;padding:9px 22px;
  font-family:var(--dg-font-d);font-size:.98rem;letter-spacing:.3em;text-transform:uppercase;
  color:var(--dg-gold);
  border:1px solid var(--dg-goldim);border-radius:999px;
  background:rgba(13,21,38,.6);
  box-shadow:0 0 26px rgba(242,193,78,.22),inset 0 0 18px rgba(242,193,78,.05);
}
.dg-lintel-syms{
  display:block;margin-top:12px;color:rgba(242,193,78,.72);
  letter-spacing:.34em;font-size:.9rem;
}

.dg-herogrid{
  display:grid;
  grid-template-columns:minmax(150px,215px) minmax(0,1.55fr) minmax(150px,215px);
  gap:clamp(16px,2.6vw,38px);
  align-items:stretch;min-width:0;
}

/* 单扇门 = 机柜对开门造型 */
.dg-door{
  position:relative;min-width:0;
  display:flex;flex-direction:column;align-items:center;gap:12px;
  padding:16px 12px 14px;
  border-width:2px;border-style:solid;
  border-radius:88px 88px 10px 10px;
  background:linear-gradient(180deg,#1B2A4A 0%,#0D1526 80%);
  box-shadow:0 14px 34px rgba(4,8,18,.55),inset 0 0 26px rgba(4,8,18,.6);
}
.dg-door-e{border-color:rgba(242,193,78,.52);box-shadow:0 0 30px rgba(242,193,78,.14),0 14px 34px rgba(4,8,18,.55);}
.dg-door-w{border-color:rgba(232,69,46,.58);box-shadow:0 0 30px rgba(232,69,46,.16),0 14px 34px rgba(4,8,18,.55);}

.dg-door-top{
  font-size:.62rem;font-weight:700;letter-spacing:.32em;color:var(--dg-mut);
  padding:4px 10px;border-radius:999px;border:1px dashed rgba(154,167,194,.35);
  white-space:nowrap;
}
.dg-door-e .dg-door-top{color:#E9CE84;border-color:rgba(242,193,78,.4);}
.dg-door-w .dg-door-top{color:#F09078;border-color:rgba(232,69,46,.42);}

/* 竖向卷轴窗 */
.dg-reelwin{
  position:relative;width:100%;flex:1 1 auto;min-height:200px;
  overflow:hidden;
  border-radius:12px;
  border:2px solid rgba(242,193,78,.32);
  background:
    repeating-linear-gradient(180deg,#0A1020 0 44px,#0B1224 44px 88px);
  box-shadow:inset 0 0 20px rgba(4,8,18,.8);
}
.dg-door-w .dg-reelwin{border-color:rgba(232,69,46,.36);}
.dg-reelcol{
  margin:0;padding:12px 0;list-style:none;
  display:flex;flex-direction:column;align-items:center;gap:10px;
  animation:dg-reelroll 11s linear infinite;
  will-change:transform;
}
.dg-door-w .dg-reelcol{animation-duration:13s;animation-direction:reverse;}
@keyframes dg-reelroll{
  from{transform:translateY(0);}
  to{transform:translateY(-50%);}
}
.dg-rsym{
  width:46px;height:52px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;
  background:linear-gradient(180deg,#141F39,#0E1830);
  border:1px solid rgba(154,167,194,.22);border-radius:9px;
}
.dg-rsym b{font-size:1.06rem;font-weight:400;line-height:1;}
.dg-door-e .dg-rsym b{color:#F2C14E;text-shadow:0 0 10px rgba(242,193,78,.5);}
.dg-door-w .dg-rsym b{color:#FF8A6E;text-shadow:0 0 10px rgba(232,69,46,.5);}
.dg-rsym small{font-size:.5rem;letter-spacing:.06em;color:var(--dg-mut);line-height:1;}
.dg-payline{
  position:absolute;left:-4px;right:-4px;top:50%;height:2px;
  background:linear-gradient(90deg,transparent,var(--dg-gold) 18%,#FFE9AE 50%,var(--dg-gold) 82%,transparent);
  box-shadow:0 0 12px rgba(242,193,78,.75);
  pointer-events:none;
}
.dg-door-w .dg-payline{
  background:linear-gradient(90deg,transparent,var(--dg-acc) 18%,#FFC7B4 50%,var(--dg-acc) 82%,transparent);
  box-shadow:0 0 12px rgba(232,69,46,.75);
}

/* 门把手（双把手呼应"对开门"） */
.dg-handle{
  position:absolute;top:46%;width:11px;height:11px;border-radius:50%;
  background:var(--dg-gold);box-shadow:0 0 10px rgba(242,193,78,.8);
}
.dg-handle-r{right:-8px;}
.dg-handle-l{left:-8px;background:var(--dg-acc);box-shadow:0 0 10px rgba(232,69,46,.8);}
.dg-door-w .dg-handle-r{background:var(--dg-acc);box-shadow:0 0 10px rgba(232,69,46,.8);}
.dg-door-w .dg-handle-l{background:var(--dg-gold);box-shadow:0 0 10px rgba(242,193,78,.8);}

.dg-door-lab{display:flex;flex-direction:column;align-items:center;gap:2px;text-align:center;}
.dg-door-lab b{
  font-family:var(--dg-font-d);font-weight:400;font-size:.95rem;letter-spacing:.12em;
}
.dg-door-e .dg-door-lab b{color:#F2C14E;}
.dg-door-w .dg-door-lab b{color:#FF8A6E;}
.dg-door-lab small{font-size:.66rem;color:var(--dg-mut);letter-spacing:.08em;}

/* hero 文本（两柱之间） */
.dg-herotext{
  min-width:0;text-align:center;
  display:flex;flex-direction:column;justify-content:center;
  padding:6px 0;
}
.dg-kicker{
  display:inline-block;margin:0 auto 12px;padding:5px 14px;
  font-size:.72rem;font-weight:700;letter-spacing:.26em;text-transform:uppercase;
  color:#F09078;border:1px solid rgba(232,69,46,.4);border-radius:999px;
}
.dg-herop{color:#C4CFE4;font-size:1.02rem;text-align:left;}
.dg-heroact{
  display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:20px;
}

/* ============ 不对称双栏内容 ============ */

.dg-split{
  max-width:1120px;margin:clamp(30px,4.5vw,56px) auto 0;padding:0 20px;
  display:grid;grid-template-columns:minmax(0,1.62fr) minmax(0,1fr);
  gap:clamp(22px,3.2vw,46px);min-width:0;
}
.dg-maincol{min-width:0;}
.dg-sidecol{
  min-width:0;
  border:1px solid var(--dg-goldim);border-radius:16px;
  background:linear-gradient(180deg,rgba(22,33,58,.72),rgba(13,21,38,.72));
  padding:clamp(18px,2.4vw,28px);
  box-shadow:0 12px 30px rgba(4,8,18,.4);
  align-self:start;
}
.dg-sidep{color:var(--dg-mut);font-size:.92rem;}

/* 龙门卡（side 栏） */
.dg-gategrid{display:grid;gap:12px;margin-bottom:10px;}
.dg-gate{
  display:grid;grid-template-columns:52px minmax(0,1fr);gap:12px;align-items:start;
  padding:12px;border-radius:14px;
  border:1px solid rgba(154,167,194,.2);
  background:linear-gradient(180deg,rgba(27,42,74,.5),rgba(13,21,38,.5));
  min-width:0;
}
.dg-gate:hover{border-color:var(--dg-goldim);}
.dg-gate-arch{
  width:52px;height:60px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:1.35rem;
  border:2px solid var(--dg-goldim);
  border-radius:26px 26px 6px 6px;
  background:radial-gradient(120% 90% at 50% 20%,rgba(242,193,78,.16),rgba(13,21,38,.2) 70%);
}
.dg-gate h3{margin:2px 0 6px;}
.dg-gate h3 a{color:#F4F7FD;}
.dg-gate h3 a:hover{color:var(--dg-gold);}
.dg-gate p{margin:0;font-size:.86rem;color:var(--dg-mut);}

/* 优势 */
.dg-advlist{margin:8px 0 0;padding:0;list-style:none;display:grid;gap:12px;}
.dg-advlist h3{
  margin:0 0 3px;color:#F2C14E;font-family:var(--dg-font-d);font-weight:400;
  font-size:1rem;letter-spacing:.05em;
}
.dg-advlist p{margin:0;font-size:.88rem;color:var(--dg-mut);}
.dg-advlist li{
  padding:2px 0 2px 14px;border-left:2px solid var(--dg-acc);
  min-width:0;
}

/* 主栏配图 */
.dg-herofig{margin:18px 0 8px;min-width:0;}
.dg-herofig img{border-radius:16px;border:1px solid var(--dg-goldim);display:block;}
.dg-herofig figcaption,
.dg-fig figcaption{
  margin-top:8px;font-size:.8rem;color:var(--dg-mut);text-align:center;
}

/* 精选 */
.dg-pickgrid{display:grid;gap:14px;margin-top:4px;}
.dg-pick{
  padding:16px 18px;border-radius:14px;min-width:0;
  border:1px solid rgba(154,167,194,.2);
  border-left:3px solid var(--dg-gold);
  background:linear-gradient(180deg,rgba(22,33,58,.55),rgba(13,21,38,.55));
}
.dg-pick h3{margin:0 0 6px;font-size:1.1rem;}
.dg-pick p{margin:0 0 10px;font-size:.92rem;color:var(--dg-mut);}
.dg-pickmore{font-size:.86rem;font-weight:600;}

/* ============ 中缝金光分隔 ============ */

.dg-seam{
  max-width:1120px;margin:clamp(34px,5vw,54px) auto clamp(26px,4vw,40px);
  padding:0 20px;min-width:0;
  display:flex;flex-direction:column;align-items:center;gap:10px;
}
.dg-seam-syms{
  color:rgba(242,193,78,.8);letter-spacing:.4em;font-size:.92rem;
  padding:6px 18px;border-radius:999px;
  background:rgba(13,21,38,.75);border:1px dashed var(--dg-goldim);
  white-space:nowrap;
}
.dg-seam-line{
  width:100%;height:2px;display:block;
  background:linear-gradient(90deg,transparent 0%,rgba(242,193,78,.55) 22%,var(--dg-acc) 50%,rgba(242,193,78,.55) 78%,transparent 100%);
  box-shadow:0 0 20px rgba(242,193,78,.45);
}

/* ============ FAQ / 信任 ============ */

.dg-faqsec{max-width:880px;margin:0 auto;padding:0 20px;min-width:0;}
.dg-q{
  border:1px solid rgba(154,167,194,.22);border-radius:13px;
  background:linear-gradient(180deg,rgba(22,33,58,.5),rgba(13,21,38,.5));
  margin-bottom:10px;overflow:hidden;
}
.dg-q summary{
  cursor:pointer;list-style:none;
  padding:14px 44px 14px 16px;position:relative;
  font-weight:600;color:#EDF1F9;
}
.dg-q summary::-webkit-details-marker{display:none;}
.dg-q summary::after{
  content:"◆";position:absolute;right:16px;top:50%;transform:translateY(-50%);
  color:var(--dg-acc);font-size:.8rem;transition:transform .2s ease;
}
.dg-q[open] summary::after{transform:translateY(-50%) rotate(90deg);}
.dg-q p{margin:0;padding:0 16px 15px;color:var(--dg-mut);font-size:.93rem;}

.dg-trust{
  max-width:880px;margin:clamp(30px,4vw,44px) auto 0;padding:22px 24px;
  border-radius:16px;min-width:0;
  border:1px solid rgba(232,69,46,.4);border-left:4px solid var(--dg-acc);
  background:linear-gradient(90deg,rgba(232,69,46,.1),rgba(13,21,38,.6));
  position:relative;
}
.dg-trust h2{color:#FFD9CC;}
.dg-trust p{color:#D8DEED;margin-bottom:8px;}
.dg-trustlnk{font-weight:600;font-size:.92rem;}
.dg-18{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:46px;height:46px;padding:0 10px;margin-top:8px;
  border-radius:10px;border:2px solid var(--dg-acc);
  color:#FFB3A0;font-weight:700;letter-spacing:.06em;
  background:rgba(232,69,46,.12);
}

/* ============ paper 内页 ============ */

.dg-band{
  max-width:1120px;margin:0 auto;padding:14px 20px 0;
  display:flex;justify-content:center;gap:clamp(14px,3vw,34px);
  color:rgba(242,193,78,.55);letter-spacing:.3em;font-size:1rem;
  border-bottom:1px solid rgba(154,167,194,.14);
  overflow:hidden;white-space:nowrap;min-width:0;
}
.dg-paper{max-width:980px;margin:0 auto;padding:26px 20px 60px;min-width:0;}
.dg-paper-edu{max-width:1020px;}
.dg-page{
  min-width:0;
  border:1px solid var(--dg-goldim);border-radius:18px;
  background:linear-gradient(180deg,rgba(22,33,58,.55),rgba(11,17,30,.75));
  padding:clamp(20px,3.4vw,40px);
  box-shadow:0 16px 40px rgba(4,8,18,.45);
}
.dg-crumbs{font-size:.82rem;color:var(--dg-mut);margin-bottom:14px;}
.dg-crumbs span{color:#C4CFE4;}
.dg-pagelead{font-size:1.04rem;color:#C4CFE4;}

.dg-steps{margin:0 0 18px;padding:0;list-style:none;display:grid;gap:14px;counter-reset:dgstep;}
.dg-steps li{
  min-width:0;padding:14px 16px;border-radius:13px;
  border:1px solid rgba(154,167,194,.2);
  background:rgba(13,21,38,.5);
}
.dg-steps h3{margin:0 0 5px;color:#F2C14E;}
.dg-steps p{margin:0;font-size:.92rem;color:var(--dg-mut);}

.dg-navlist{margin:0 0 18px;padding-left:20px;color:var(--dg-mut);display:grid;gap:8px;}
.dg-navlist li{min-width:0;}
.dg-navlist b{color:#EDF1F9;}

.dg-note{
  padding:14px 16px;border-radius:12px;
  border:1px dashed rgba(232,69,46,.45);
  background:rgba(232,69,46,.07);color:#F0D9D2;
}

.dg-pageaside{
  margin-top:22px;padding:16px 18px;border-radius:13px;
  border:1px solid rgba(154,167,194,.22);background:rgba(13,21,38,.55);
}
.dg-pageaside h3{
  font-family:var(--dg-font-d);font-weight:400;color:var(--dg-gold);
  letter-spacing:.1em;font-size:.95rem;margin:0 0 8px;
}
.dg-pageaside h3 + h3{margin-top:14px;}
.dg-pageaside a{
  display:block;padding:5px 0;color:#C4CFE4;border-bottom:1px solid rgba(154,167,194,.12);
  font-size:.92rem;
}
.dg-pageaside a:hover{color:var(--dg-gold);}

.dg-resp{
  margin-top:20px;padding:12px 15px;border-radius:11px;
  background:rgba(232,69,46,.08);border:1px solid rgba(232,69,46,.32);
  font-size:.85rem;color:#F0CFC5;
}

.dg-fig{margin:20px 0;min-width:0;}
.dg-fig img{border-radius:15px;border:1px solid var(--dg-goldim);display:block;}

.dg-edu h2{margin-top:1.5em;}
.dg-edu .dg-fig-lead{margin-top:6px;}

/* ============ footer ============ */

.dg-foot{
  border-top:1px solid var(--dg-goldim);
  background:linear-gradient(180deg,rgba(11,17,30,.9),#070C16);
  margin-top:clamp(30px,5vw,56px);
}
.dg-fgrid{
  max-width:1120px;margin:0 auto;padding:34px 20px 22px;
  display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));
  gap:26px;min-width:0;
}
.dg-fcol h3{
  font-family:var(--dg-font-d);font-weight:400;color:var(--dg-gold);
  letter-spacing:.12em;font-size:.95rem;margin:0 0 10px;
}
.dg-fcol a{display:block;padding:4px 0;color:#C4CFE4;font-size:.9rem;}
.dg-fcol a:hover{color:var(--dg-gold);}
.dg-fbrand p{color:var(--dg-mut);font-size:.86rem;margin:12px 0 10px;}
.dg-fbot{
  max-width:1120px;margin:0 auto;padding:16px 20px 26px;
  border-top:1px solid rgba(154,167,194,.14);
}
.dg-fbot p{margin:0 0 4px;color:var(--dg-mut);font-size:.82rem;text-align:center;}

/* ============ 悬浮条 ============ */

.dg-float{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:flex;justify-content:center;pointer-events:none;
}
.dg-floatin{
  pointer-events:auto;
  display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:12px;
  margin:0 12px 12px;padding:10px 16px;max-width:96vw;
  border-radius:16px;
  background:rgba(10,16,30,.94);
  border:1px solid var(--dg-goldim);
  box-shadow:0 12px 34px rgba(4,8,18,.7),0 0 24px rgba(232,69,46,.22);
  backdrop-filter:blur(6px);
}
.dg-floatmsg{font-size:.9rem;color:#D8DEED;white-space:nowrap;}
.dg-floatmsg b{color:#F2C14E;}
.dg-blink{animation:dg-blink 1.5s ease-in-out infinite;}
@keyframes dg-blink{
  0%,100%{opacity:1;}
  50%{opacity:.4;}
}

/* ============ 404 ============ */

.dg-404body{padding-bottom:40px;}
.dg-404{
  max-width:640px;margin:0 auto;padding:clamp(40px,8vw,90px) 20px;text-align:center;min-width:0;
}
.dg-404reels{
  display:flex;justify-content:center;gap:14px;margin-bottom:18px;
  color:var(--dg-gold);font-size:1.5rem;letter-spacing:.2em;
}
.dg-404reels span{
  width:58px;height:64px;display:inline-flex;align-items:center;justify-content:center;
  border:2px solid var(--dg-goldim);border-radius:29px 29px 8px 8px;
  background:linear-gradient(180deg,#141F39,#0E1830);
}
.dg-404act{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:22px;}

/* ============ 响应式 ============ */

@media (max-width:980px){
  .dg-nav{display:none;}
  .dg-burger{display:inline-flex;}
  .dg-hact{display:none;}
  .dg-herogrid{
    grid-template-columns:minmax(120px,160px) minmax(0,1fr) minmax(120px,160px);
    gap:14px;
  }
  .dg-split{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:20px;}
}

@media (max-width:768px){
  body{font-size:16px;}
  /* 双柱堆叠：文字先，两门后 */
  .dg-herogrid{grid-template-columns:minmax(0,1fr);}
  .dg-herotext{order:-1;}
  .dg-door{flex-direction:row;align-items:stretch;gap:14px;padding:12px;}
  .dg-door-top{align-self:center;writing-mode:vertical-rl;letter-spacing:.2em;padding:8px 4px;}
  .dg-reelwin{min-height:120px;flex:1 1 auto;}
  .dg-door-lab{align-self:center;text-align:left;}
  .dg-reelcol{flex-direction:row;flex-wrap:nowrap;gap:8px;padding:0 10px;width:max-content;animation:dg-reelrollx 14s linear infinite;}
  .dg-door-w .dg-reelcol{animation-direction:normal;}
  .dg-rsym{width:42px;height:48px;flex:0 0 auto;}
  @keyframes dg-reelrollx{
    from{transform:translateX(0);}
    to{transform:translateX(-50%);}
  }
  .dg-handle{top:auto;bottom:14px;}
  .dg-handle-r{right:-8px;}
  .dg-split{grid-template-columns:minmax(0,1fr);}
  .dg-fgrid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);}
  .dg-seam-syms{letter-spacing:.2em;font-size:.8rem;}
  .dg-floatmsg{white-space:normal;text-align:center;}
}

@media (max-width:480px){
  .dg-gate{grid-template-columns:minmax(0,1fr);justify-items:center;text-align:center;}
  .dg-fgrid{grid-template-columns:minmax(0,1fr);}
  .dg-heroact .dg-btn{width:100%;}
  .dg-404reels span{width:52px;height:58px;}
}