/* ==========================================================================
   小小屠龙 · 冰雪复古 — 官网框架样式
   - 颜色、间距、字体集中在 :root，方便整体换肤
   - 断点：1100 / 900 / 640 / 420
   - 未接入任何第三方字体或 CDN，纯本地资源
   ========================================================================== */

:root{
  --bg:#05080d;
  --bg-deep:#03060a;
  --bg-soft:#08121c;
  --panel:rgba(11,24,36,.68);
  --panel-solid:#0a151f;
  --ice:#8fe3ff;
  --ice-strong:#4cc7f2;
  --ice-soft:#c9f2ff;
  --gold:#e4bd7a;
  --gold-bright:#f6dfae;
  --text:#e8f3fa;
  --muted:#8fa6b7;
  --muted-deep:#6c8293;
  --line:rgba(143,227,255,.13);
  --line-strong:rgba(143,227,255,.28);
  --danger:#e6a15c;
  --max:1180px;
  --gutter:clamp(18px,4vw,32px);
  --radius:16px;
  --head-h:78px;
  --font-body:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-display:"Noto Serif SC","Source Han Serif SC","STSong","SimSun",serif;
  --ease:cubic-bezier(.22,.7,.28,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--text);
  background:
    radial-gradient(1100px 700px at 88% -8%,rgba(44,132,180,.14),transparent 62%),
    radial-gradient(900px 620px at -12% 34%,rgba(18,64,92,.12),transparent 60%),
    var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.menu-open{overflow:hidden}
body.menu-open::before{
  content:"";position:fixed;inset:0;z-index:90;
  background:rgba(2,6,10,.68);
  backdrop-filter:blur(2px);
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
::selection{background:rgba(143,227,255,.28);color:#fff}
:focus-visible{outline:2px solid var(--ice);outline-offset:3px;border-radius:4px}

.container{width:min(var(--max),100% - var(--gutter)*2);margin-inline:auto}
.svg-sprite{position:absolute;width:0;height:0;overflow:hidden}
.icon{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex:none}

.skip-link{
  position:fixed;left:16px;top:-80px;z-index:200;
  padding:10px 16px;border-radius:8px;background:var(--ice);color:#04121b;
  font-size:13px;font-weight:700;transition:top .2s;
}
.skip-link:focus{top:12px}

section[id]{scroll-margin-top:calc(var(--head-h) + 16px)}

/* ==========================================================================
   按钮
   ========================================================================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  border:1px solid transparent;border-radius:999px;
  padding:13px 26px;font-size:14px;font-weight:700;letter-spacing:.02em;
  white-space:nowrap;cursor:pointer;
  transition:transform .25s var(--ease),box-shadow .25s,background .25s,border-color .25s,color .25s;
}
.btn .icon{width:17px;height:17px;stroke-width:1.9}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{
  color:#1a1206;
  background:linear-gradient(135deg,#c99b55 0%,#f1d49a 46%,#d8ab63 100%);
  border-color:rgba(255,236,200,.5);
  box-shadow:0 12px 32px rgba(211,163,94,.22),inset 0 1px 0 rgba(255,255,255,.55);
}
.btn-primary:hover{box-shadow:0 16px 40px rgba(211,163,94,.32),inset 0 1px 0 rgba(255,255,255,.6)}
.btn-outline{
  color:#cfeeff;background:rgba(9,22,33,.45);
  border-color:rgba(143,227,255,.3);
  backdrop-filter:blur(8px);
}
.btn-outline:hover{background:rgba(143,227,255,.08);border-color:rgba(143,227,255,.55)}
.btn-ghost{color:#cfe6f4;background:transparent;border-color:var(--line)}
.btn-ghost:hover{border-color:var(--line-strong);background:rgba(143,227,255,.05)}
.btn-sm{padding:9px 20px;font-size:13px}
.btn-lg{padding:16px 34px;font-size:15px}
.btn-block{display:flex;width:100%}

/* ==========================================================================
   顶部导航
   ========================================================================== */
.site-head{
  position:fixed;top:0;left:0;right:0;z-index:100;
  transition:background .3s,border-color .3s,box-shadow .3s,backdrop-filter .3s;
  border-bottom:1px solid transparent;
}
.site-head.is-scrolled,
body.menu-open .site-head{
  background:rgba(5,10,16,.86);
  backdrop-filter:blur(18px) saturate(120%);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.28);
}
.nav-inner{height:var(--head-h);display:flex;align-items:center;gap:clamp(18px,3vw,40px)}
.brand{display:inline-flex;align-items:center;gap:11px;flex:none}
.brand-mark{
  width:40px;height:40px;border-radius:11px;display:block;overflow:hidden;flex:none;
  border:1px solid rgba(143,227,255,.34);
  background:#05080d;
  box-shadow:inset 0 0 22px rgba(90,200,240,.08),0 0 24px rgba(60,160,210,.12);
}
.brand-mark img{width:100%;height:100%;object-fit:cover;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.18}
.brand-text b{font-size:19px;letter-spacing:.07em;font-weight:800;white-space:nowrap}
.brand-text em{font-style:normal;font-size:10px;letter-spacing:.3em;color:var(--ice);opacity:.85;margin-top:2px;white-space:nowrap}

.nav-links{display:flex;align-items:center;gap:clamp(16px,2.2vw,30px);margin-left:auto}
.nav-links a{
  position:relative;padding:7px 0;font-size:13.5px;color:#a9c0d2;letter-spacing:.04em;
  transition:color .2s;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,var(--ice),transparent);
  transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
}
.nav-links a:hover,.nav-links a[aria-current="true"]{color:#f2fbff}
.nav-links a:hover::after,.nav-links a[aria-current="true"]::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none}

.nav-download{display:none}
.nav-toggle{
  display:none;width:40px;height:40px;padding:0;border:1px solid var(--line);
  border-radius:10px;background:rgba(9,20,30,.5);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:17px;height:1.5px;background:#cfe8f6;transition:transform .3s,opacity .3s}
body.menu-open .nav-toggle span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
body.menu-open .nav-toggle span:nth-child(2){opacity:0}
body.menu-open .nav-toggle span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* ==========================================================================
   首屏
   ========================================================================== */
.hero{
  position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;
  padding-top:calc(var(--head-h) + 28px);overflow:hidden;isolation:isolate;
  background:var(--bg-deep);
}
.hero-media{
  position:absolute;inset:0;z-index:-3;
  background:url("../img/hero-cover.jpg") center 36%/cover no-repeat;
  transform:scale(1.02);
  animation:heroDrift 30s ease-in-out infinite alternate;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-2;
  background:
    linear-gradient(90deg,rgba(3,8,13,.96) 0%,rgba(3,8,13,.9) 25%,rgba(3,8,13,.66) 43%,rgba(3,8,13,.2) 72%,rgba(3,8,13,.28) 100%),
    linear-gradient(180deg,rgba(3,8,13,.66) 0%,rgba(3,8,13,.04) 26%,rgba(3,8,13,.08) 62%,var(--bg) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(760px 460px at 20% 52%,rgba(30,120,170,.14),transparent 72%),
    radial-gradient(600px 400px at 78% 24%,rgba(120,210,255,.08),transparent 74%);
}
@keyframes heroDrift{from{transform:scale(1.02) translate3d(0,0,0)}to{transform:scale(1.06) translate3d(-1%,-.6%,0)}}

.snow{position:absolute;inset:0;width:100%;height:100%;z-index:1;pointer-events:none;opacity:.68}
.hero-vignette{
  position:absolute;inset:0;z-index:2;pointer-events:none;
  box-shadow:inset 0 0 180px 40px rgba(2,6,10,.5);
  background:linear-gradient(180deg,rgba(3,8,13,.12),transparent 22%,transparent 76%,rgba(5,8,13,.5));
}
.hero-inner{
  position:relative;z-index:3;flex:1;
  display:flex;align-items:center;
  padding-top:24px;padding-bottom:clamp(38px,5vw,62px);
}
.hero-copy{max-width:650px;min-width:0;padding:8px 0 4px}
.hero-brandline{display:flex;align-items:center;gap:14px;min-width:0}
.hero-logo{
  width:54px;height:54px;flex:none;display:block;overflow:hidden;border-radius:13px;
  border:1px solid rgba(143,227,255,.4);background:#05080d;
  box-shadow:0 10px 26px rgba(0,0,0,.38),0 0 24px rgba(80,190,240,.16);
}
.hero-logo img{width:100%;height:100%;object-fit:cover;display:block}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;margin:0;
  padding:8px 15px;border:1px solid rgba(143,227,255,.24);border-radius:999px;
  background:rgba(7,18,28,.52);backdrop-filter:blur(10px);
  font-size:11.5px;letter-spacing:.16em;color:#bfeaff;white-space:nowrap;
}
.hero-eyebrow .dot{
  width:6px;height:6px;border-radius:50%;background:var(--ice);
  box-shadow:0 0 10px var(--ice);animation:dotPulse 2.6s ease-in-out infinite;
}
@keyframes dotPulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.75)}}

.hero-title{margin:30px 0 0;line-height:1;font-weight:900}
.hero-title .t-main{
  display:block;font-size:clamp(58px,5.8vw,84px);letter-spacing:.06em;
  background:linear-gradient(180deg,#ffffff 8%,#dff5ff 52%,#8fdcff 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 8px 34px rgba(50,150,200,.22));
}
.hero-title .t-sub{
  display:block;margin-top:17px;
  font-size:clamp(17px,1.9vw,23px);font-weight:300;letter-spacing:.3em;
  color:var(--ice);text-shadow:0 0 26px rgba(90,200,245,.22);word-break:keep-all;
}
.hero-slogan{margin:32px 0 0;font-size:clamp(15px,1.5vw,18px);letter-spacing:.2em;color:#e2f6ff;text-shadow:0 2px 18px rgba(0,0,0,.55)}
.hero-desc{margin:16px 0 0;max-width:500px;color:#aec6d7;font-size:14.5px;line-height:2;text-shadow:0 2px 16px rgba(0,0,0,.6)}
.hero-actions{display:flex;flex-wrap:wrap;gap:13px;margin-top:34px}

.hero-meta{
  display:flex;list-style:none;margin:40px 0 0;padding:0;width:fit-content;
  border:1px solid var(--line);border-radius:13px;overflow:hidden;
  background:rgba(5,13,21,.56);backdrop-filter:blur(12px);
}
.hero-meta li{padding:11px 22px;border-right:1px solid var(--line)}
.hero-meta li:last-child{border-right:0}
.hero-meta span{display:block;font-size:10px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase}
.hero-meta b{display:block;margin-top:1px;font-size:13px;font-weight:600;color:#e9f7ff;white-space:nowrap}

.hero-cover-mobile{display:none}

.hero-ticker{
  position:relative;z-index:3;flex:none;
  border-top:1px solid rgba(143,227,255,.12);
  background:rgba(4,10,16,.46);backdrop-filter:blur(8px);
}
.ticker-inner{display:flex;align-items:center;height:52px;overflow:hidden}
.ticker-item{
  position:relative;flex:none;padding:0 clamp(16px,2.4vw,28px);
  font-size:11.5px;letter-spacing:.14em;color:#95aebe;white-space:nowrap;
}
.ticker-item::before{
  content:"";position:absolute;left:0;top:50%;width:3px;height:3px;border-radius:50%;
  background:var(--ice);opacity:.55;transform:translateY(-50%);
}
.ticker-item:first-child{padding-left:0}
.ticker-item:first-child::before{display:none}

/* ==========================================================================
   通用区块
   ========================================================================== */
.section{position:relative;padding:clamp(72px,9vw,118px) 0}
.section-alt{
  background:linear-gradient(180deg,rgba(9,21,32,.5),rgba(5,9,14,0) 70%);
  border-block:1px solid rgba(143,227,255,.07);
}
.sec-head{
  display:grid;grid-template-columns:112px 1fr;gap:clamp(16px,3vw,32px);
  align-items:start;margin-bottom:clamp(34px,5vw,54px);
}
.sec-no{
  padding-top:10px;border-top:1px solid var(--line-strong);
  font-size:10.5px;letter-spacing:.18em;color:var(--ice);white-space:nowrap;
}
.eyebrow{margin:0 0 12px;font-size:10.5px;letter-spacing:.3em;color:var(--ice);text-transform:uppercase}
.sec-head h2{
  margin:0;font-size:clamp(29px,3.8vw,44px);line-height:1.28;
  font-weight:800;letter-spacing:.02em;
}
.sec-head h2 em{font-style:normal;color:var(--ice)}
.sec-head p:last-child{margin:14px 0 0;max-width:640px;color:var(--muted);font-size:14px;line-height:1.9}

/* 卡片：特色 */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.feature{
  position:relative;overflow:hidden;
  padding:26px 26px 28px;border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(175deg,rgba(13,27,40,.72),rgba(6,13,20,.6));
  transition:transform .35s var(--ease),border-color .35s,box-shadow .35s,background .35s;
}
.feature::before{
  content:"";position:absolute;top:0;right:0;width:86px;height:86px;pointer-events:none;
  background:
    linear-gradient(135deg,transparent 48%,rgba(143,227,255,.16) 49%,rgba(143,227,255,.16) 50%,transparent 51%),
    linear-gradient(135deg,transparent 62%,rgba(143,227,255,.08) 63%,rgba(143,227,255,.08) 64%,transparent 65%);
}
.feature:hover{
  transform:translateY(-4px);
  border-color:rgba(143,227,255,.32);
  background:linear-gradient(175deg,rgba(16,33,48,.8),rgba(7,16,24,.66));
  box-shadow:0 22px 52px rgba(0,0,0,.3),inset 0 0 46px rgba(70,170,220,.045);
}
.f-no{position:absolute;top:24px;right:24px;font-size:10.5px;letter-spacing:.14em;color:rgba(143,227,255,.38)}
.f-icon{
  width:46px;height:46px;border-radius:12px;display:grid;place-items:center;
  margin-bottom:19px;color:var(--ice);
  border:1px solid rgba(143,227,255,.17);background:rgba(143,227,255,.06);
  transition:box-shadow .35s,border-color .35s;
}
.f-icon .icon{width:22px;height:22px;stroke-width:1.45}
.feature:hover .f-icon{border-color:rgba(143,227,255,.34);box-shadow:0 0 26px rgba(70,180,230,.14)}
.feature h3{margin:0 0 8px;font-size:16.5px;font-weight:700;letter-spacing:.03em;color:#eaf7ff}
.feature p{margin:0;font-size:13px;line-height:1.9;color:var(--muted)}

/* 分栏：玩法 */
.split{display:grid;grid-template-columns:.92fr 1.08fr;gap:clamp(36px,6vw,84px);align-items:start}
.split-sticky{position:sticky;top:calc(var(--head-h) + 32px)}
.display{margin:0 0 18px;font-size:clamp(30px,3.6vw,43px);line-height:1.34;font-weight:800;letter-spacing:.015em}
.display em{font-style:normal;color:var(--ice)}
.split-copy{margin:0 0 26px;color:var(--muted);font-size:14px;line-height:1.95;max-width:430px}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;padding-bottom:4px;
  color:var(--ice);font-size:13.5px;border-bottom:1px solid rgba(143,227,255,.3);
  transition:gap .25s,border-color .25s;
}
.link-arrow .icon{width:15px;height:15px}
.link-arrow:hover{gap:12px;border-color:var(--ice)}

.play-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.play-list li{
  display:grid;grid-template-columns:56px 1fr;gap:16px;
  padding:25px 10px 26px 0;border-bottom:1px solid var(--line);
  transition:background .3s,padding-left .3s;
}
.play-list li:hover{background:rgba(143,227,255,.028);padding-left:10px}
.play-no{padding-top:4px;font-size:11px;letter-spacing:.18em;color:var(--ice)}
.play-list h3{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  margin:0 0 7px;font-size:18px;font-weight:700;color:#edf9ff;
}
.u-tag{
  padding:2px 8px;border-radius:999px;border:1px solid rgba(143,227,255,.2);
  background:rgba(143,227,255,.07);color:#bfeaff;
  font-size:10px;font-weight:500;letter-spacing:.08em;
}
.play-list p{margin:0;font-size:13px;line-height:1.9;color:var(--muted)}

/* 画面 */
.gallery{display:block}
.gallery-main{
  position:relative;margin:0;overflow:hidden;
  border:1px solid rgba(143,227,255,.24);border-radius:14px;
  background:#020609;aspect-ratio:2/1;
  box-shadow:0 30px 70px rgba(0,0,0,.34);
}
.gallery-main::after{
  content:"";position:absolute;inset:10px;pointer-events:none;
  border:1px solid rgba(143,227,255,.1);border-radius:8px;
}
.gallery-main img{width:100%;height:100%;object-fit:cover;object-position:top center;transition:opacity .22s ease}
.gallery-main figcaption{
  position:absolute;left:0;right:0;bottom:0;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:44px 22px 15px;
  background:linear-gradient(transparent,rgba(2,7,11,.9));
  font-size:12.5px;color:#d3e8f5;
}
.gallery-tip{font-size:10.5px;color:#7f97a8;letter-spacing:.06em}
.gallery-thumbs{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:9px;margin-top:10px;min-height:0}
.gallery-thumb{
  position:relative;min-height:0;aspect-ratio:2/1;padding:0;overflow:hidden;cursor:pointer;
  border:1px solid var(--line);border-radius:8px;background:#03080d;
  transition:border-color .25s,box-shadow .25s,transform .25s;
}
.gallery-thumb img{width:100%;height:100%;object-fit:cover;object-position:top center;opacity:.62;transition:opacity .25s}
.gallery-thumb span{
  position:absolute;left:6px;bottom:5px;padding:1px 6px;border-radius:4px;
  background:rgba(2,8,13,.68);font-size:9.5px;letter-spacing:.08em;color:#cfe8f6;
}
.gallery-thumb:hover img{opacity:.9}
.gallery-thumb.is-active{border-color:rgba(143,227,255,.7);box-shadow:0 0 0 1px rgba(143,227,255,.28),0 0 24px rgba(60,170,220,.14)}
.gallery-thumb.is-active img{opacity:1}
.gallery-scroll-hint{display:none}
.placeholder-note{margin:15px 0 0;font-size:11px;line-height:1.8;color:var(--muted-deep)}

/* 成长路线 */
.growth{
  position:relative;padding:clamp(56px,7vw,80px) 0;
  border-block:1px solid rgba(143,227,255,.08);
  background:
    radial-gradient(800px 420px at 84% 0%,rgba(52,142,190,.09),transparent 70%),
    linear-gradient(180deg,rgba(9,20,30,.62),rgba(4,9,14,.4));
}
.growth-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.growth-head h2{margin:0;font-size:clamp(25px,3vw,33px);line-height:1.35;font-weight:800}
.growth-head h2 em{font-style:normal;color:var(--ice)}
.growth-head .eyebrow{margin:0}
.growth-grid{
  list-style:none;margin:0;padding:0;
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
}
.step{position:relative;padding:24px 26px 4px 0;border-right:1px solid var(--line);min-width:0}
.step:last-child{border-right:0;padding-right:0}
.step::before{
  content:"";position:absolute;top:-3px;left:0;width:5px;height:5px;border-radius:50%;
  background:var(--ice);box-shadow:0 0 10px rgba(143,227,255,.6);
}
.step-no{font-size:10.5px;letter-spacing:.2em;color:var(--ice);opacity:.8}
.step h3{margin:10px 0 7px;font-size:15.5px;font-weight:700;color:#e9f6fd}
.step p{margin:0;padding-right:8px;font-size:12.5px;line-height:1.85;color:var(--muted)}

/* 公告 / 开服 */
.news-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:18px}
.panel{
  padding:26px 26px 24px;border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(12,25,37,.62),rgba(6,13,20,.55));
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px}
.panel-head h3{margin:0;font-size:17px;font-weight:700;letter-spacing:.03em}
.panel-note{font-size:10.5px;color:var(--muted-deep);letter-spacing:.06em}

.server-list{list-style:none;margin:0 0 22px;padding:0}
.server-row{
  display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:14px;align-items:center;
  padding:13px 0;border-bottom:1px solid var(--line);
}
.server-row:last-child{border-bottom:0}
.server-name{min-width:0}
.server-name b{display:block;font-size:13.5px;font-weight:600;color:#e1f1fb}
.server-name span{display:block;margin-top:1px;font-size:10.5px;color:var(--muted-deep);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.server-time{font-size:11.5px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}
.badge{
  display:inline-block;padding:2.5px 8px;border-radius:999px;border:1px solid;
  font-size:10px;letter-spacing:.05em;white-space:nowrap;
}
.badge-warm{color:#eecb91;border-color:rgba(238,203,145,.28);background:rgba(238,203,145,.07)}
.badge-mute{color:#8097a8;border-color:rgba(128,151,168,.24);background:rgba(128,151,168,.05)}

.news-list{list-style:none;margin:0 0 14px;padding:0}
.news-list li{border-bottom:1px solid var(--line)}
.news-list li:last-child{border-bottom:0}
.news-list a{display:block;padding:13px 0;transition:padding-left .25s}
.news-list a:hover{padding-left:5px}
.news-list a:hover h4{color:var(--ice)}
.news-list .meta{display:flex;align-items:center;gap:9px;margin-bottom:3px;font-size:10.5px;color:var(--muted-deep)}
.news-list h4{margin:0;font-size:13.5px;font-weight:600;line-height:1.6;color:#d8eaf6;transition:color .25s}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--ice)}
.text-link .icon{width:14px;height:14px}
.text-link:hover{gap:9px}

/* 下载 */
.download{overflow:hidden;padding-top:clamp(60px,8vw,96px);padding-bottom:clamp(60px,8vw,96px)}
.download::before{
  content:"";position:absolute;left:50%;top:42%;width:900px;height:520px;z-index:0;
  transform:translate(-50%,-50%);pointer-events:none;
  background:radial-gradient(closest-side,rgba(60,160,210,.16),transparent 72%);
}
.download-card{
  position:relative;z-index:1;overflow:hidden;
  display:grid;grid-template-columns:minmax(0,1fr) 248px;gap:clamp(28px,4vw,52px);
  padding:clamp(28px,4.6vw,52px);
  border:1px solid rgba(143,227,255,.24);border-radius:22px;
  background:
    linear-gradient(150deg,rgba(15,35,51,.88),rgba(5,13,21,.94)),
    var(--panel-solid);
  box-shadow:0 40px 100px rgba(0,0,0,.4),inset 0 1px 0 rgba(255,255,255,.05);
}
.download-card::before{
  content:"";position:absolute;right:-70px;top:-90px;width:380px;height:380px;pointer-events:none;
  background:url("../img/hero-cover.jpg") center/cover no-repeat;
  opacity:.09;filter:blur(2px);mask-image:radial-gradient(closest-side,#000,transparent 76%);
  -webkit-mask-image:radial-gradient(closest-side,#000,transparent 76%);
}
.download-main{position:relative;z-index:1;min-width:0}
.download-card h2{margin:0;font-size:clamp(28px,3.4vw,38px);font-weight:800;line-height:1.3}
.download-card h2 em{font-style:normal;color:var(--ice);white-space:nowrap}
.download-desc{margin:12px 0 0;max-width:720px;color:var(--muted);font-size:13.5px;line-height:1.9}
.download-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:24px}
.dl-platforms{
  display:flex;flex-wrap:wrap;gap:9px 22px;list-style:none;margin:20px 0 0;padding:16px 0 0;
  border-top:1px solid var(--line);
}
.dl-platforms li{display:flex;align-items:center;gap:7px;font-size:11.5px;color:var(--muted)}
.dl-platforms .icon{width:16px;height:16px;color:var(--ice);stroke-width:1.4}
.dl-platforms b{font-weight:500;color:#dceef9}
.dl-note{margin:15px 0 0;font-size:10.5px;line-height:1.8;color:var(--muted-deep)}
.dl-contact{margin:10px 0 0;font-size:12px;line-height:1.8;color:var(--muted)}
.dl-contact a,.text-gold{color:#e4bd7a;text-decoration:none;border-bottom:1px solid rgba(228,189,122,.32);transition:color .2s,border-color .2s}
.dl-contact a:hover,.text-gold:hover{color:#f2d9a8;border-bottom-color:rgba(242,217,168,.7)}

.dl-qr{
  position:relative;z-index:1;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  padding-left:clamp(20px,3vw,36px);border-left:1px solid var(--line);text-align:center;
}
.dl-qr img{width:168px;height:168px;padding:7px;border-radius:12px;background:#fff}
.dl-qr b{font-size:13px;font-weight:600;color:#e6f5fe;letter-spacing:.03em}
.dl-qr span{font-size:10.5px;color:#d8b473}

/* FAQ */
.faq{max-width:920px;margin-inline:auto;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  position:relative;list-style:none;cursor:pointer;
  padding:19px 46px 19px 0;font-size:14.5px;font-weight:600;color:#d9ecf8;
  transition:color .2s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--ice)}
.faq summary::after{
  content:"";position:absolute;right:6px;top:50%;width:11px;height:11px;
  border-right:1.5px solid var(--ice);border-bottom:1.5px solid var(--ice);
  transform:translateY(-70%) rotate(45deg);opacity:.7;transition:transform .25s;
}
.faq details[open] summary::after{transform:translateY(-20%) rotate(225deg)}
.faq .a{padding:0 46px 22px 0;max-width:800px;color:var(--muted);font-size:13px;line-height:1.95}
.faq .a p{margin:0}

/* 收尾 CTA */
.final-cta{
  position:relative;padding:clamp(58px,7vw,82px) 0;
  border-top:1px solid var(--line);
  background:
    radial-gradient(720px 300px at 74% 50%,rgba(58,158,208,.13),transparent 70%),
    linear-gradient(180deg,rgba(7,15,23,.4),rgba(4,8,13,.9));
}
.final-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.final-cta h2{margin:0;font-size:clamp(28px,3.6vw,40px);font-weight:800;line-height:1.3}
.final-cta h2 em{font-style:normal;color:var(--ice)}
.final-cta p:last-child{margin:10px 0 0;font-size:13px;color:var(--muted)}

/* 页脚 */
.site-foot{background:var(--bg-deep);border-top:1px solid var(--line)}
.foot-top{
  display:grid;grid-template-columns:1.5fr repeat(3,.72fr);
  gap:clamp(24px,4vw,44px);padding:clamp(40px,5vw,58px) 0 clamp(30px,4vw,42px);
}
.foot-brand p{margin:16px 0 0;max-width:330px;font-size:12px;line-height:1.9;color:var(--muted-deep)}
.foot-col h3{margin:4px 0 16px;font-size:11px;letter-spacing:.18em;color:#cfe4f1;font-weight:600}
.foot-col ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.foot-col a,.foot-col span{font-size:12px;color:var(--muted-deep);line-height:1.7;transition:color .2s}
.foot-col a:hover{color:var(--ice)}
.foot-bottom{border-top:1px solid var(--line);padding:20px 0 34px}
.foot-bottom p{margin:0 0 8px;font-size:10.5px;line-height:1.85;color:#607586}
.foot-bottom .warning{color:#768c9d}
.foot-bottom .row{display:flex;flex-wrap:wrap;gap:5px 18px;margin:0 0 8px}
.foot-bottom .row span{font-size:10.5px;color:#607586}

/* 手机下载条 / 返回顶部 / toast */
.mobile-cta{display:none}
.to-top{
  position:fixed;right:20px;bottom:24px;z-index:70;
  width:42px;height:42px;padding:0;border-radius:50%;cursor:pointer;
  display:grid;place-items:center;
  border:1px solid var(--line-strong);background:rgba(7,17,26,.82);color:#cfe9f7;
  backdrop-filter:blur(10px);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s,visibility .25s,transform .25s,border-color .25s;
}
.to-top .icon{width:17px;height:17px}
.to-top.is-on{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--ice)}
.toast{
  position:fixed;left:50%;bottom:30px;z-index:150;
  max-width:min(420px,calc(100vw - 32px));
  padding:11px 18px;border-radius:10px;
  border:1px solid rgba(143,227,255,.3);background:rgba(6,16,25,.96);
  color:#d8edf9;font-size:12.5px;line-height:1.6;text-align:center;
  box-shadow:0 18px 50px rgba(0,0,0,.45);
  opacity:0;visibility:hidden;transform:translate(-50%,10px);
  transition:opacity .25s,visibility .25s,transform .25s;
}
.toast.is-on{opacity:1;visibility:visible;transform:translate(-50%,0)}

/* 入场动画：仅在 JS 可用时隐藏，避免脚本失败导致内容不可见 */
.reveal{opacity:1;transform:none}
.js .reveal{opacity:0;transform:translateY(20px);transition:opacity .75s var(--ease),transform .75s var(--ease);transition-delay:var(--d,0ms)}
.js .reveal.in{opacity:1;transform:none}

/* ==========================================================================
   法务页
   ========================================================================== */
.legal-main{padding-top:calc(var(--head-h) + 40px)}
.legal-hero{padding:clamp(40px,6vw,70px) 0 30px;border-bottom:1px solid var(--line)}
.legal-hero h1{margin:8px 0 10px;font-size:clamp(30px,4vw,42px);font-weight:800}
.legal-hero p{margin:0;color:var(--muted);font-size:13px}
.notfound{padding-bottom:clamp(70px,9vw,110px)}
.notfound p{max-width:560px;line-height:1.9}
.notfound .hero-actions{margin-top:26px}
.legal-notice{
  margin:28px 0 0;padding:16px 18px;border-radius:10px;
  border:1px solid rgba(228,189,122,.28);background:rgba(228,189,122,.06);
  color:#d8c39b;font-size:12px;line-height:1.85;
}
.legal-wrap{display:grid;grid-template-columns:210px minmax(0,1fr);gap:clamp(28px,5vw,64px);padding:clamp(34px,5vw,52px) 0 clamp(60px,8vw,90px)}
.legal-toc{position:sticky;top:calc(var(--head-h) + 24px);align-self:start}
.legal-toc h2{margin:0 0 14px;font-size:11px;letter-spacing:.18em;color:var(--ice);font-weight:600}
.legal-toc ol{list-style:none;margin:0;padding:0;display:grid;gap:11px}
.legal-toc a{font-size:12.5px;color:var(--muted);transition:color .2s}
.legal-toc a:hover{color:var(--ice)}
.legal-body{min-width:0}
.legal-article{padding:0 0 38px;margin:0 0 34px;border-bottom:1px solid var(--line)}
.legal-article:last-child{border-bottom:0;margin-bottom:0}
.legal-article h2{margin:0 0 6px;font-size:22px;font-weight:800}
.legal-article .updated{margin:0 0 18px;font-size:11px;color:var(--muted-deep)}
.legal-article h3{margin:24px 0 8px;font-size:14.5px;color:#d9edf9;font-weight:700}
.legal-article p,.legal-article li{font-size:13px;line-height:1.95;color:var(--muted)}
.legal-article p{margin:0 0 12px}
.legal-article ul{margin:0 0 14px;padding-left:20px}
.legal-article li{margin-bottom:5px}
.legal-article .todo{color:#d8b473}

/* ==========================================================================
   响应式
   ========================================================================== */
@media(max-width:1100px){
  .gallery-thumbs{grid-template-columns:repeat(4,minmax(0,1fr))}
  .download-card{grid-template-columns:minmax(0,1fr) 220px}
  .dl-qr img{width:150px;height:150px}
}

@media(max-width:900px){
  :root{--head-h:68px}
  .nav-links{
    position:fixed;left:0;right:0;top:var(--head-h);z-index:99;
    flex-direction:column;align-items:stretch;gap:0;
    margin:0;padding:8px var(--gutter) 22px;
    background:linear-gradient(180deg,#07131e 0%,#040b12 100%);
    border-bottom:1px solid var(--line-strong);
    box-shadow:0 26px 50px rgba(0,0,0,.45);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .25s,visibility .25s,transform .25s;
    max-height:calc(100svh - var(--head-h));overflow-y:auto;
  }
  body.menu-open .nav-links{opacity:1;visibility:visible;transform:none}
  .nav-links a{padding:14px 2px;font-size:15px;border-bottom:1px solid var(--line)}
  .nav-links a::after{display:none}
  .nav-links .nav-download{
    display:flex;align-items:center;justify-content:center;gap:8px;
    margin-top:18px;padding:12px 18px;border:1px solid rgba(255,236,200,.5);border-radius:999px;
    background:linear-gradient(135deg,#c99b55 0%,#f1d49a 46%,#d8ab63 100%);
    color:#1a1206;font-weight:800;letter-spacing:.04em;
    box-shadow:0 10px 26px rgba(211,163,94,.2),inset 0 1px 0 rgba(255,255,255,.5);
  }
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .nav-actions{margin-left:auto}

  .hero{min-height:auto;padding-top:calc(var(--head-h) + 22px)}
  .hero-inner{padding-top:34px;padding-bottom:40px;align-items:flex-start}
  .hero-copy{max-width:100%}
  .hero-desc{max-width:600px}
  .hero-title .t-main{font-size:clamp(48px,7.6vw,66px)}
  .hero::before{
    background:
      linear-gradient(90deg,rgba(3,8,13,.93) 0%,rgba(3,8,13,.8) 54%,rgba(3,8,13,.38) 100%),
      linear-gradient(180deg,rgba(3,8,13,.7) 0%,rgba(3,8,13,.5) 42%,var(--bg) 100%);
  }
  .ticker-inner{overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .ticker-inner::-webkit-scrollbar{display:none}
  .ticker-item{padding-inline:18px}
  .hero-ticker::after{
    content:"";position:absolute;right:0;top:0;bottom:0;width:54px;z-index:1;pointer-events:none;
    background:linear-gradient(90deg,transparent,rgba(5,12,18,.94));
  }

  .sec-head{grid-template-columns:1fr;gap:10px;margin-bottom:34px}
  .sec-no{border-top:0;padding-top:0}
  .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:1fr;gap:30px}
  .split-sticky{position:static}
  .split-copy{max-width:none}
  .gallery-thumbs{grid-template-columns:repeat(4,minmax(0,1fr));grid-auto-rows:auto;gap:8px;margin-top:8px}
  .gallery-tip{display:none}
  .growth-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step{padding:22px 18px 6px 0;border-right:1px solid var(--line)}
  .step:nth-child(2n){border-right:0;padding-right:0}
  .step:nth-child(n+3){border-top:1px solid var(--line);margin-top:0}
  .news-grid{grid-template-columns:1fr}
  .download-card{grid-template-columns:1fr;gap:26px}
  .dl-qr{border-left:0;border-top:1px solid var(--line);padding:24px 0 0;flex-direction:row;gap:18px;text-align:left;justify-content:flex-start}
  .dl-qr img{width:120px;height:120px;flex:none}
  .dl-qr b,.dl-qr span{display:block}
  .foot-top{grid-template-columns:1.4fr repeat(3,.7fr);gap:22px}
  .legal-wrap{grid-template-columns:1fr;gap:24px}
  .legal-toc{position:static;border-bottom:1px solid var(--line);padding-bottom:18px}
  .legal-toc ol{grid-template-columns:repeat(2,1fr);gap:8px}
}

@media(max-width:640px){
  .brand-mark{width:36px;height:36px;border-radius:10px}
  .brand-extra{display:none}
  .brand-text b{font-size:17px}
  .brand-text em{font-size:9px;letter-spacing:.26em}

  .hero{min-height:0;padding-top:calc(var(--head-h) + 10px)}
  .hero-media{display:none}
  .hero::before{background:linear-gradient(180deg,rgba(6,14,22,.72),rgba(5,11,18,.86) 55%,var(--bg) 100%)}
  .hero-cover-mobile{
    display:block;position:relative;z-index:3;flex:none;width:100%;
    aspect-ratio:16/8.5;max-height:300px;overflow:hidden;background:#040b12;
  }
  .hero-cover-mobile img{width:100%;height:100%;object-fit:cover;object-position:64% 34%;display:block}
  .hero-cover-mobile::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:linear-gradient(180deg,transparent 52%,rgba(5,11,18,.42) 78%,var(--bg) 100%);
    box-shadow:inset 0 -1px 0 rgba(143,227,255,.14);
  }
  .hero-brandline{gap:10px}
  .hero-logo{width:44px;height:44px;border-radius:11px}
  .hero-eyebrow{font-size:10.5px;padding:7px 12px;letter-spacing:.1em}
  .hero-title{margin-top:24px}
  .hero-title .t-main{font-size:clamp(36px,10.2vw,44px);letter-spacing:.05em}
  .hero-title .t-sub{font-size:14.5px;letter-spacing:.2em;margin-top:12px}
  .hero-slogan{margin-top:26px;font-size:14px;letter-spacing:.16em}
  .hero-desc{margin-top:15px;font-size:13px;line-height:2}
  .hero-actions{margin-top:30px;gap:10px}
  .hero-actions .btn{flex:1;padding:14px 12px;font-size:13.5px}
  .hero-meta{width:100%;margin-top:30px}
  .hero-meta li{flex:1;padding:9px 8px;text-align:center}
  .hero-meta b{font-size:11.5px;white-space:normal}
  .hero-meta span{font-size:9px}

  .gallery-main{aspect-ratio:16/9}
  .gallery-thumbs{display:flex;gap:8px;overflow-x:auto;margin-top:9px;padding-bottom:4px;scrollbar-width:none;-webkit-overflow-scrolling:touch;scroll-snap-type:x proximity}
  .gallery-thumbs::-webkit-scrollbar{display:none}
  .gallery-thumb{flex:0 0 118px;aspect-ratio:2/1;scroll-snap-align:start}
  .gallery-scroll-hint{display:block;margin:8px 0 0;font-size:10px;letter-spacing:.1em;color:var(--muted-deep)}

  .section{padding:58px 0}
  .sec-head h2{font-size:27px}
  .sec-head p:last-child{font-size:12.5px}
  .feature{padding:22px 20px 24px}
  .feature-grid{gap:10px}
  .feature h3{font-size:15px}
  .feature p{font-size:12px}
  .f-no{top:20px;right:20px}
  .f-icon{width:40px;height:40px;margin-bottom:15px;border-radius:10px}
  .f-icon .icon{width:19px;height:19px}

  .display{font-size:28px}
  .play-list li{grid-template-columns:38px 1fr;gap:10px;padding:20px 4px 20px 0}
  .play-list li:hover{padding-left:0}
  .play-list h3{font-size:16px}
  .play-list p{font-size:12.5px}

  .gallery-main{aspect-ratio:16/9.6}
  .gallery-main figcaption{padding:32px 14px 12px;font-size:11.5px}
  .gallery-thumbs{grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}
  .gallery-thumb{aspect-ratio:16/8.6}

  .growth{padding:48px 0}
  .growth-head{margin-bottom:24px}
  .growth-head h2{font-size:23px}
  .step p{font-size:12px}

  .panel{padding:20px 18px}
  .panel-head h3{font-size:16px}
  .server-row{grid-template-columns:minmax(0,1fr) auto;gap:8px 10px}
  .server-time{grid-column:2;grid-row:1;justify-self:end}
  .badge{grid-column:1/-1;justify-self:start;margin-top:2px}
  .news-list h4{font-size:13px}

  .download{padding:54px 0}
  .download-card{padding:24px 18px}
  .download-card h2{font-size:26px}
  .download-actions{flex-direction:column;align-items:stretch;margin-top:20px}
  .download-actions .btn{width:100%;justify-content:center}
  .dl-platforms{gap:8px 16px;margin-top:18px}
  .dl-platforms li{font-size:11px}
  .dl-contact{font-size:11.5px}
  .dl-qr{display:none}

  .faq summary{padding:16px 38px 16px 0;font-size:13.5px}
  .faq .a{padding-right:20px;font-size:12.5px}

  .final-cta{padding:50px 0}
  .final-cta-inner{gap:24px}
  .final-cta .btn{width:100%}

  .foot-top{grid-template-columns:1fr 1fr;gap:26px 20px;padding:38px 0 28px}
  .foot-brand{grid-column:1/-1}
  .foot-brand p{max-width:none}
  .foot-bottom{padding-bottom:26px}
  .to-top{display:none}

  body{padding-bottom:84px}
  .mobile-cta{
    display:flex;position:fixed;left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));z-index:80;
    align-items:center;justify-content:space-between;gap:12px;
    padding:10px 12px 10px 16px;border-radius:14px;
    border:1px solid rgba(143,227,255,.26);
    background:rgba(5,14,22,.94);backdrop-filter:blur(16px);
    box-shadow:0 16px 46px rgba(0,0,0,.5);
    opacity:0;visibility:hidden;transform:translateY(calc(100% + 24px));
    transition:opacity .3s var(--ease),visibility .3s,transform .35s var(--ease);
  }
  .mobile-cta.is-on{opacity:1;visibility:visible;transform:none}
  .mobile-cta b{display:block;font-size:12.5px;color:#eaf8ff;line-height:1.4}
  .mobile-cta span{display:block;font-size:10px;color:var(--muted-deep);line-height:1.5}
  .mobile-cta .btn{padding:10px 18px;font-size:12.5px}

  .toast{bottom:calc(84px + env(safe-area-inset-bottom))}
}

@media(max-width:560px){
  .feature-grid{grid-template-columns:1fr}
  .growth-grid{grid-template-columns:1fr}
  .step{border-right:0;padding:20px 0 4px}
  .step:nth-child(n+2){border-top:1px solid var(--line)}
  .step p{padding-right:0}
}

@media(max-width:420px){
  .container{width:calc(100% - 32px)}
  .hero-meta li{padding:8px 5px}
  .hero-meta b{font-size:10.5px}
  .hero-meta span{font-size:8.5px}
  .brand-text em{letter-spacing:.22em}
  .sec-head h2{font-size:25px}
  .foot-col h3{margin-bottom:12px}
  .foot-col ul{gap:7px}
  .legal-toc ol{grid-template-columns:1fr}
}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .js .reveal{opacity:1;transform:none}
  .hero-media{animation:none;transform:none}
}