/* ==========================================================================
   反水内核 FS Kernel · fsnh.cn
   主题：深海蓝 + 极光青 + 珊瑚橙（非纯黑底色，区别于参考站的金橙配色）
   ========================================================================== */

:root{
  --ink:#07131f;
  --ink-2:#091a28;
  --ink-3:#0e2637;
  --panel:rgba(158,236,241,.045);
  --panel-2:rgba(158,236,241,.075);
  --line:rgba(94,231,223,.18);
  --line-soft:rgba(173,224,235,.10);

  --aqua:#5ee7df;
  --aqua-2:#2cc7c9;
  --aqua-3:#127777;
  --blue:#6aa8ff;
  --blue-2:#3f7cff;
  --coral:#ff7a70;
  --coral-2:#f25462;
  --gold:#f3c969;

  --text:#eef8fb;
  --text-2:#b9cfda;
  --muted:#8199aa;

  --grad-aqua:linear-gradient(135deg,#e0fffc 0%,#5ee7df 35%,#2cc7c9 65%,#1c8f9e 100%);
  --grad-fire:linear-gradient(135deg,#ffd08a 0%,#ff9070 40%,#ff5f65 72%,#e3405e 100%);
  --grad-blue:linear-gradient(135deg,#9dd8ff 0%,#5b9dff 48%,#3f7cff 100%);
  --shadow-lg:0 30px 70px -30px rgba(1,10,18,.9);
  --radius:20px;
  --radius-sm:14px;
  --frame:1180px;

  --hero-pb:140px;
  --next-pt:82px;
  --scroll-h:44px;
}

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

html{
  scroll-behavior:smooth;
  scroll-padding-top:92px;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  background:
    radial-gradient(1100px 720px at 84% -12%,rgba(44,199,201,.10),transparent 64%),
    radial-gradient(900px 680px at 6% 4%,rgba(63,124,255,.10),transparent 62%),
    radial-gradient(700px 520px at 78% 84%,rgba(242,84,98,.05),transparent 68%),
    var(--ink);
}

img{max-width:100%;height:auto;display:block}
picture{display:contents}
a{color:inherit;text-decoration:none}
h1,h2,h3{line-height:1.25;margin:0;letter-spacing:.02em}
p{margin:0}
ul,ol,dl,dd,dt{margin:0;padding:0;list-style:none}
strong{font-weight:700}
button{font:inherit}

::selection{background:rgba(94,231,223,.26);color:#f4ffff}

:focus-visible{outline:2px solid var(--aqua);outline-offset:3px;border-radius:6px}

.frame{width:min(100% - 40px,var(--frame));margin-inline:auto}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--aqua);color:#07222a;padding:10px 18px;border-radius:0 0 10px 0;font-weight:700;
}
.skip-link:focus{left:0}

/* ---------- 顶部导航 ---------- */
.mast{
  position:sticky;top:0;z-index:60;
  backdrop-filter:blur(18px) saturate(155%);
  -webkit-backdrop-filter:blur(18px) saturate(155%);
  background:linear-gradient(180deg,rgba(7,19,31,.94),rgba(7,19,31,.74));
  border-bottom:1px solid var(--line-soft);
  transition:background .3s,border-color .3s,box-shadow .3s;
}
.mast.is-scrolled{
  background:linear-gradient(180deg,rgba(7,19,31,.98),rgba(7,19,31,.89));
  border-bottom-color:rgba(94,231,223,.14);
  box-shadow:0 16px 36px -26px rgba(1,10,18,.95);
}
.mast-row{display:flex;align-items:center;gap:22px;min-height:70px}
.mark{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.mark-logo{
  width:42px;height:42px;border-radius:12px;
  box-shadow:0 6px 22px -8px rgba(94,231,223,.55),0 0 0 1px rgba(94,231,223,.16);
}
.mark-text{
  font-size:19px;font-weight:800;letter-spacing:.08em;
  background:var(--grad-aqua);-webkit-background-clip:text;background-clip:text;color:transparent;white-space:nowrap;
}
.rail{display:flex;gap:4px;margin-left:auto}
.rail a{
  position:relative;padding:9px 14px;border-radius:999px;font-size:15px;color:var(--text-2);
  transition:color .25s,background .25s;white-space:nowrap;
}
.rail a::after{
  content:"";position:absolute;left:50%;bottom:3px;width:4px;height:4px;border-radius:50%;
  background:var(--aqua);opacity:0;transform:translateX(-50%) scale(.4);transition:opacity .25s,transform .25s;
}
.rail a:hover{color:var(--aqua);background:rgba(94,231,223,.07)}
.rail a.is-active{color:var(--aqua)}
.rail a.is-active::after{opacity:1;transform:translateX(-50%) scale(1)}
.pill-dl{
  flex:0 0 auto;padding:10px 22px;border-radius:999px;font-size:15px;font-weight:800;color:#21100c;
  background:var(--grad-fire);box-shadow:0 10px 26px -12px rgba(242,84,98,.9);
  transition:transform .25s,box-shadow .25s;
}
.pill-dl:hover{transform:translateY(-2px);box-shadow:0 16px 34px -14px rgba(242,84,98,1)}
.burger{
  display:none;width:42px;height:42px;border:1px solid var(--line-soft);background:none;border-radius:12px;
  padding:11px 10px;cursor:pointer;flex-direction:column;justify-content:space-between;
}
.burger span{display:block;height:2px;background:var(--aqua);border-radius:2px;transition:transform .25s,opacity .25s}
.burger[aria-expanded="true"] span:first-child{transform:translateY(8px) rotate(45deg)}
.burger[aria-expanded="true"] span:last-child{transform:translateY(-8px) rotate(-45deg)}

/* ---------- 首屏 ---------- */
.hero{position:relative;padding:78px 0 var(--hero-pb);overflow:hidden;isolation:isolate}
.hero-atmosphere{position:absolute;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.hero-mesh{
  position:absolute;inset:0;
  background:
    radial-gradient(58% 48% at 50% 2%,rgba(94,231,223,.20),transparent 63%),
    radial-gradient(46% 42% at 11% 34%,rgba(242,84,98,.11),transparent 66%),
    radial-gradient(52% 46% at 89% 24%,rgba(63,124,255,.14),transparent 66%);
}
.hero-shelf{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(94,231,223,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(94,231,223,.055) 1px,transparent 1px);
  background-size:68px 68px;
  mask-image:radial-gradient(72% 60% at 50% 20%,rgba(7,19,31,1) 28%,transparent 78%);
  -webkit-mask-image:radial-gradient(72% 60% at 50% 20%,rgba(7,19,31,1) 28%,transparent 78%);
}
.hero-glow{
  position:absolute;left:50%;top:120px;width:560px;height:560px;transform:translateX(-50%);
  border-radius:50%;
  background:radial-gradient(circle,rgba(94,231,223,.12),rgba(63,124,255,.05) 45%,transparent 68%);
  filter:blur(28px);
}
.hero-core{text-align:center;display:flex;flex-direction:column;align-items:center}

.hero-logo-wrap{position:relative;display:inline-flex;margin-bottom:20px}
.hero-logo{
  width:150px;height:150px;border-radius:34px;
  box-shadow:
    0 26px 60px -24px rgba(94,231,223,.75),
    0 0 0 1px rgba(94,231,223,.25) inset,
    0 0 70px -16px rgba(63,124,255,.35);
}
.hero-ribbon{
  position:absolute;top:-10px;left:-32px;transform:rotate(-16deg);
  background:linear-gradient(135deg,#ffd08a,#ff7a70 50%,#e3405e);
  color:#fff;font-size:12px;font-weight:800;letter-spacing:.12em;
  padding:5px 18px;border-radius:6px;white-space:nowrap;
  box-shadow:0 10px 24px -12px rgba(242,84,98,.95);
}
.hero-badge{
  display:inline-block;margin-bottom:10px;padding:7px 18px;border-radius:999px;
  font-size:13.5px;letter-spacing:.1em;color:var(--aqua);
  background:rgba(94,231,223,.08);border:1px solid var(--line);
}
.hero-kicker{
  margin-bottom:6px;color:var(--gold);font-size:11.5px;font-weight:700;
  letter-spacing:.26em;text-indent:.26em;
}
.hero-brand{
  font-size:clamp(44px,7.2vw,82px);font-weight:900;letter-spacing:.08em;
  background:var(--grad-aqua);-webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 12px 34px rgba(44,199,201,.35));
}
.hero-lead{margin-top:16px;font-size:clamp(17px,2.2vw,21px);color:var(--text-2);max-width:760px}
.hero-sub{margin-top:12px;font-size:15px;letter-spacing:.13em;color:var(--muted)}
.hero-cta{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
.hero-trust{
  margin-top:30px;display:flex;gap:14px 30px;flex-wrap:wrap;justify-content:center;
  font-size:14px;color:var(--muted);
}
.hero-trust li{display:flex;align-items:center;gap:8px}
.hero-trust li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--grad-fire)}
.hero-scroll{
  position:absolute;left:50%;transform:translateX(-50%);
  bottom:calc((var(--hero-pb) - var(--next-pt) - var(--scroll-h)) / 2);
  width:26px;height:var(--scroll-h);border:1px solid var(--line);border-radius:14px;
}
.hero-scroll span{
  position:absolute;left:50%;top:9px;width:4px;height:8px;border-radius:2px;background:var(--aqua);
  transform:translateX(-50%);animation:scrolldot 1.8s infinite;
}
@keyframes scrolldot{0%{opacity:0;transform:translate(-50%,0)}35%{opacity:1}100%{opacity:0;transform:translate(-50%,16px)}}

/* ---------- 按钮 ---------- */
.btn-primary,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:15px 34px;border-radius:999px;font-size:16px;font-weight:800;cursor:pointer;border:1px solid transparent;
  transition:transform .25s,box-shadow .25s,background .25s,border-color .25s;
}
.btn-primary{color:#24110d;background:var(--grad-fire);box-shadow:0 16px 38px -16px rgba(242,84,98,.95)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 22px 46px -16px rgba(242,84,98,1)}
.btn-ghost{color:var(--aqua);border-color:var(--line);background:rgba(94,231,223,.05)}
.btn-ghost:hover{background:rgba(94,231,223,.12);transform:translateY(-3px)}
.btn-block{width:100%}

/* ---------- 通用区块 ---------- */
section{position:relative;padding:82px 0}
.block-head{max-width:780px;margin-bottom:44px}
.block-head h2{
  font-size:clamp(27px,3.6vw,40px);font-weight:900;letter-spacing:.04em;
  background:var(--grad-aqua);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.block-head h2::after{
  content:"";display:block;width:62px;height:3px;margin-top:16px;border-radius:3px;background:var(--grad-fire);
}
.block-head p{margin-top:16px;color:var(--muted);font-size:16px}

/* ---------- 实机截图 ---------- */
.gallery{background:linear-gradient(180deg,transparent,rgba(94,231,223,.035),transparent)}
.shot-track{
  display:flex;gap:24px;overflow-x:auto;padding:6px 4px 26px;scroll-snap-type:x mandatory;
  scrollbar-width:thin;scrollbar-color:var(--aqua-3) transparent;
}
.shot-track::-webkit-scrollbar{height:7px}
.shot-track::-webkit-scrollbar-thumb{background:var(--aqua-3);border-radius:99px}
.shot{
  flex:0 0 auto;width:280px;margin:0;scroll-snap-align:center;
  border-radius:26px;padding:12px;border:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(158,236,241,.07),rgba(158,236,241,.02));
  box-shadow:var(--shadow-lg);
  transition:transform .3s,border-color .3s,box-shadow .3s;
}
.shot:hover{transform:translateY(-5px);border-color:var(--line);box-shadow:0 30px 64px -34px rgba(44,199,201,.55)}
.shot img{border-radius:18px;width:100%}
.shot figcaption{margin-top:12px;text-align:center;font-size:14px;color:var(--text-2);letter-spacing:.06em}

/* ---------- 能力四项 ---------- */
.ability-rail{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.ability-item{
  position:relative;padding:30px 26px 28px;border-radius:var(--radius);
  border:1px solid var(--line-soft);background:linear-gradient(180deg,rgba(158,236,241,.06),rgba(158,236,241,.015));
  transition:transform .3s,border-color .3s,box-shadow .3s;
  overflow:hidden;
}
.ability-item::after{
  content:"";position:absolute;right:-42px;top:-48px;width:120px;height:120px;border-radius:50%;
  background:radial-gradient(circle,rgba(94,231,223,.13),transparent 70%);
}
.ability-item:hover{transform:translateY(-6px);border-color:var(--line);box-shadow:0 26px 52px -30px rgba(44,199,201,.55)}
.ability-index{
  display:block;font-size:32px;font-weight:900;letter-spacing:.05em;
  background:var(--grad-fire);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.ability-item h3{margin:14px 0 10px;font-size:19px;font-weight:800;color:var(--text)}
.ability-item p{color:var(--muted);font-size:14.5px}

/* ---------- 分类 chips ---------- */
.cat-chips{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px}
.cat-chip{
  padding:9px 20px;border-radius:999px;font-size:14.5px;color:var(--text-2);cursor:pointer;
  border:1px solid var(--line-soft);background:rgba(158,236,241,.03);transition:all .25s;
}
.cat-chip:hover{color:var(--aqua);border-color:var(--line)}
.cat-chip.is-on{color:#082329;background:var(--grad-aqua);border-color:transparent;font-weight:800}

/* ---------- 功能卡片 ---------- */
.tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.tool-card{
  position:relative;display:flex;flex-direction:column;gap:14px;padding:24px 22px;border-radius:var(--radius-sm);
  border:1px solid var(--line-soft);background:linear-gradient(180deg,rgba(158,236,241,.055),rgba(158,236,241,.014));
  transition:transform .3s,border-color .3s,box-shadow .3s,opacity .25s;
}
.tool-card:hover{transform:translateY(-6px);border-color:var(--line);box-shadow:0 24px 50px -30px rgba(44,199,201,.6)}
.tool-card.is-hidden{display:none}
.tool-head{display:flex;align-items:center;gap:12px}
.tool-ico{
  width:46px;height:46px;flex:0 0 auto;border-radius:13px;display:grid;place-items:center;
  font-size:19px;font-weight:900;color:#07222a;background:var(--grad-aqua);
}
.tool-ico.alt{background:var(--grad-fire);color:#fff}
.tool-ico.line{background:rgba(94,231,223,.11);color:var(--aqua);border:1px solid var(--line)}
.tool-name{font-size:16.5px;font-weight:800}
.tool-meta{font-size:13px;color:var(--muted);letter-spacing:.04em}
.tool-card>p{font-size:14px;color:var(--text-2);flex:1}
.tool-tags{display:flex;flex-wrap:wrap;gap:8px}
.tool-tag{
  font-size:12.5px;padding:4px 11px;border-radius:999px;color:var(--aqua);
  background:rgba(94,231,223,.09);border:1px solid var(--line);
}
.tool-tag.hot{color:#ffd9c9;background:rgba(255,122,112,.14);border-color:rgba(255,122,112,.36)}
.tool-tag.beta{color:#cfe5ff;background:rgba(91,157,255,.14);border-color:rgba(91,157,255,.35)}
.tool-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:4px;border-top:1px solid var(--line-soft)}
.tool-ver{font-size:13px;color:var(--muted);letter-spacing:.05em}
.dl-mini{
  padding:8px 20px;border-radius:999px;font-size:14px;font-weight:800;color:#24110d;
  background:var(--grad-fire);transition:transform .25s,box-shadow .25s;
}
.dl-mini:hover{transform:translateY(-2px);box-shadow:0 12px 26px -12px rgba(242,84,98,.95)}

/* ---------- 用户评价 ---------- */
.reviews{background:linear-gradient(180deg,transparent,rgba(63,124,255,.035),transparent)}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.review-card{
  position:relative;display:flex;flex-direction:column;gap:16px;padding:28px 26px 24px;
  border-radius:var(--radius);border:1px solid var(--line-soft);
  background:
    radial-gradient(120% 100% at 100% 0%,rgba(94,231,223,.055),transparent 58%),
    linear-gradient(180deg,rgba(158,236,241,.052),rgba(158,236,241,.012));
  transition:transform .3s,border-color .3s,box-shadow .3s;
  overflow:hidden;
}
.review-card::before{
  content:"“";position:absolute;right:18px;top:-12px;font-family:Georgia,serif;
  font-size:92px;line-height:1;color:rgba(94,231,223,.10);pointer-events:none;
}
.review-card:hover{transform:translateY(-6px);border-color:var(--line);box-shadow:0 26px 54px -32px rgba(44,199,201,.5)}
.review-top{display:flex;align-items:center;justify-content:space-between;gap:12px;position:relative;z-index:1}
.stars{font-size:15px;letter-spacing:2px;color:var(--gold);line-height:1.4}
.stars-off{color:rgba(243,201,105,.22)}
.review-tag{
  font-size:12px;letter-spacing:.04em;color:var(--aqua);padding:3px 10px;border-radius:999px;
  background:rgba(94,231,223,.08);border:1px solid var(--line);
}
.review-card blockquote{margin:0;color:var(--text-2);font-size:14.5px;flex:1;position:relative;z-index:1}
.review-foot{display:flex;align-items:center;gap:12px;padding-top:16px;border-top:1px solid var(--line-soft)}
.review-foot strong{display:block;font-size:14.5px;line-height:1.4}
.review-foot div > span{display:block;font-size:12.5px;color:var(--muted);line-height:1.5}
.avatar{
  width:40px;height:40px;flex:0 0 auto;border-radius:50%;display:grid;place-items:center;
  font-size:14px;font-weight:800;color:#f4ffff;letter-spacing:0;border:1px solid rgba(255,255,255,.12);
  box-shadow:0 8px 18px -10px rgba(1,10,18,.8);
}
.avatar-a{background:linear-gradient(135deg,#1f8a91,#0a3e50)}
.avatar-b{background:linear-gradient(135deg,#365fb5,#172e5e)}
.avatar-c{background:linear-gradient(135deg,#9a5f56,#4d2a38)}
.avatar-d{background:linear-gradient(135deg,#23778d,#153b55)}
.avatar-e{background:linear-gradient(135deg,#765a2c,#3e3520)}
.avatar-f{background:linear-gradient(135deg,#5b6e9e,#283450)}

/* ---------- 社区留言 ---------- */
.comment-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.comment-item{
  display:flex;gap:14px;padding:20px 22px;border-radius:var(--radius-sm);
  border:1px solid var(--line-soft);background:rgba(158,236,241,.028);
}
.comment-item .avatar{width:36px;height:36px;font-size:13px}
.comment-body{min-width:0;flex:1}
.comment-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:5px}
.comment-head strong{font-size:14.5px;color:var(--text)}
.comment-head span{font-size:12px;color:var(--muted);white-space:nowrap}
.comment-body>p{font-size:14.3px;color:var(--text-2)}
.comment-reply{
  display:block;margin-top:9px;padding:8px 12px;border-left:2px solid var(--aqua-2);border-radius:0 8px 8px 0;
  background:rgba(94,231,223,.055);color:var(--muted);font-size:13px;
}

/* ---------- 榜单 / 版本 ---------- */
.rank-wrap{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.rank-col{
  padding:28px 26px;border-radius:var(--radius);border:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(158,236,241,.05),rgba(158,236,241,.01));
}
.rank-col h3{font-size:19px;font-weight:800;margin-bottom:16px;color:var(--aqua);letter-spacing:.06em}
.rank-row{
  display:flex;align-items:center;gap:14px;padding:13px 0;border-top:1px dashed var(--line-soft);
}
.rank-row:first-of-type{border-top:0}
.rank-no{
  width:34px;height:34px;flex:0 0 auto;display:grid;place-items:center;border-radius:10px;
  font-size:13px;font-weight:900;color:var(--aqua);background:rgba(94,231,223,.09);border:1px solid var(--line);
}
.rank-row:nth-child(2) .rank-no{color:#082329;background:var(--grad-aqua);border-color:transparent}
.rank-row strong{font-size:15.5px;flex:1}
.rank-row strong a:hover{color:var(--aqua)}
.rank-count{font-size:13.5px;color:var(--muted);white-space:nowrap}

/* ---------- 下载面板 ---------- */
.download-panel{
  display:grid;grid-template-columns:1.25fr .75fr;gap:44px;align-items:center;
  padding:52px 48px;border-radius:28px;border:1px solid var(--line);
  background:
    radial-gradient(80% 120% at 0% 0%,rgba(94,231,223,.11),transparent 60%),
    radial-gradient(70% 120% at 100% 100%,rgba(242,84,98,.07),transparent 60%),
    linear-gradient(180deg,rgba(158,236,241,.055),rgba(158,236,241,.01));
  box-shadow:var(--shadow-lg);
}
.eyebrow{margin:0 0 12px;font-size:12.5px;letter-spacing:.28em;text-transform:uppercase;color:var(--coral)}
.download-copy h2{font-size:clamp(25px,3.2vw,34px);font-weight:900}
.download-copy>p:not(.eyebrow){margin-top:16px;color:var(--muted);font-size:15px}
.meta-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:28px}
.meta-grid>div{padding:14px 16px;border-radius:12px;background:rgba(158,236,241,.035);border:1px solid var(--line-soft)}
.meta-grid dt{font-size:12.5px;color:var(--muted);letter-spacing:.06em}
.meta-grid dd{margin-top:4px;font-size:15px;font-weight:700;color:var(--text)}
.download-card{
  text-align:center;padding:30px 26px;border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(158,236,241,.07),rgba(158,236,241,.02));
  border:1px solid var(--line);box-shadow:0 24px 60px -34px rgba(44,199,201,.75);
}
.download-logo{width:88px;height:88px;border-radius:24px;margin:0 auto 16px;box-shadow:0 16px 34px -18px rgba(94,231,223,.85)}
.download-name{font-size:19px;font-weight:800}
.download-ver{font-size:13.5px;color:var(--muted);margin:6px 0 20px}
.download-note{margin-top:14px;font-size:12.5px;color:var(--muted)}

/* ---------- 配置步骤 ---------- */
.steps{counter-reset:step;display:grid;gap:16px}
.step{
  display:flex;gap:20px;align-items:flex-start;padding:24px 26px;border-radius:var(--radius-sm);
  border:1px solid var(--line-soft);
  background:linear-gradient(90deg,rgba(94,231,223,.055),rgba(158,236,241,.012));
}
.step-num{
  width:44px;height:44px;flex:0 0 auto;display:grid;place-items:center;border-radius:14px;
  font-size:17px;font-weight:900;color:#082329;background:var(--grad-aqua);
}
.step h3{font-size:17.5px;font-weight:800;margin-bottom:6px}
.step p{color:var(--muted);font-size:14.5px}

/* ---------- 信任 ---------- */
.trust-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.trust-item{
  padding:28px 26px;border-radius:var(--radius);border:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(158,236,241,.05),rgba(158,236,241,.01));
}
.trust-item h3{font-size:18px;font-weight:800;color:var(--aqua);margin-bottom:10px}
.trust-item p{color:var(--muted);font-size:14.5px}

/* ---------- 文章 ---------- */
.tutorial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.article-card{
  display:flex;flex-direction:column;gap:12px;padding:28px 26px;border-radius:var(--radius);
  border:1px solid var(--line-soft);background:linear-gradient(180deg,rgba(158,236,241,.055),rgba(158,236,241,.01));
  transition:transform .3s,border-color .3s,box-shadow .3s;
}
.article-card:hover{transform:translateY(-6px);border-color:var(--line);box-shadow:0 26px 54px -32px rgba(44,199,201,.6)}
.article-meta{font-size:12.5px;letter-spacing:.1em;color:var(--coral)}
.article-card h3{font-size:18px;font-weight:800}
.article-card p{color:var(--muted);font-size:14.5px;flex:1}
.article-more{font-size:14px;font-weight:700;color:var(--aqua)}
.article-more::after{content:" →"}

/* ---------- 关于 ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.about-copy p{color:var(--muted);margin-bottom:16px}
.about-list{display:grid;gap:14px}
.about-list li{
  padding:16px 20px;border-radius:var(--radius-sm);border:1px solid var(--line-soft);
  background:rgba(158,236,241,.03);font-size:14.5px;color:var(--text-2);
}
.about-list strong{display:block;color:var(--aqua);font-size:15.5px;margin-bottom:4px}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px}
.faq-item{
  border-radius:var(--radius-sm);border:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(158,236,241,.05),rgba(158,236,241,.01));
  padding:6px 24px;
}
.faq-item summary{
  cursor:pointer;list-style:none;padding:18px 0;font-size:16.5px;font-weight:700;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:22px;font-weight:400;color:var(--aqua);transition:transform .3s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{padding-bottom:20px;color:var(--muted);font-size:14.5px}
.faq-item strong{color:var(--aqua)}

/* ---------- 收束 ---------- */
.finale{text-align:center;padding:96px 0}
.finale-inner{
  display:flex;flex-direction:column;align-items:center;gap:18px;
  padding:56px 34px;border-radius:30px;border:1px solid var(--line);
  background:
    radial-gradient(75% 130% at 50% 0%,rgba(94,231,223,.14),transparent 62%),
    radial-gradient(50% 100% at 50% 100%,rgba(242,84,98,.07),transparent 68%),
    linear-gradient(180deg,rgba(158,236,241,.05),rgba(158,236,241,.01));
}
.finale-logo{width:96px;height:96px;border-radius:26px;box-shadow:0 20px 44px -22px rgba(94,231,223,.9)}
.finale h2{
  font-size:clamp(26px,3.6vw,38px);font-weight:900;
  background:var(--grad-aqua);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.finale p{color:var(--muted);max-width:620px}

/* ---------- 页脚 ---------- */
.foot{border-top:1px solid var(--line-soft);background:var(--ink-2);padding: 10px 0 40px;}
.foot-row{display:flex;flex-direction:column;gap:18px;align-items:center;text-align:center}
.foot-mark{justify-content:center}
.foot-links{display:flex;flex-wrap:wrap;gap:8px 22px;justify-content:center;font-size:14.5px}
.foot-links a{color:var(--text-2);transition:color .25s}
.foot-links a:hover{color:var(--aqua)}
.foot-legal{font-size:13.5px;color:var(--muted);max-width:760px}
.foot-copy{font-size:13px;color:#6d8496}

/* ---------- 滚动揭示：纯 CSS，不支持时内容完全可见 ---------- */
@keyframes reveal-in{
  from{opacity:.001;transform:translateY(22px)}
  to{opacity:1;transform:none}
}
@supports (animation-timeline: view()){
  @media (prefers-reduced-motion: no-preference){
    .reveal{
      animation:reveal-in linear both;
      animation-timeline:view();
      animation-range:entry 0% cover 30%;
    }
  }
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hero-scroll span{animation:none}
}

@supports not ((background-clip:text) or (-webkit-background-clip:text)){
  .hero-brand,.block-head h2,.mark-text,.finale h2{color:var(--text)}
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .ability-rail,.tool-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .tutorial-grid{grid-template-columns:1fr}
  .download-panel{grid-template-columns:1fr;padding:40px 30px;gap:32px}
  .about-grid{grid-template-columns:1fr;gap:26px}
}
@media (max-width:760px){
  .frame{width:min(100% - 32px,var(--frame))}
  section{padding:60px 0}
  .hero{padding:52px 0 var(--hero-pb);--hero-pb:124px;--next-pt:60px;--scroll-h:44px}
  .rail{
    position:absolute;top:70px;left:0;right:0;flex-direction:column;gap:2px;padding:14px 16px;
    background:rgba(7,19,31,.985);border-bottom:1px solid var(--line-soft);display:none;
    box-shadow:0 24px 40px -24px rgba(1,10,18,.95);
  }
  .rail.open{display:flex}
  .rail a{padding:12px 14px;border-radius:10px}
  .rail a::after{display:none}
  .burger{display:flex}
  .pill-dl{margin-left:auto;padding:9px 16px;font-size:14px}
  .mark-text{font-size:17px}
  .trust-list,.rank-wrap,.comment-list{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .meta-grid{grid-template-columns:1fr}
  .shot{width:238px}
  .hero-trust{gap:10px 20px;font-size:13px}
  .hero-ribbon{left:-14px;font-size:11px;padding:4px 14px}
  .hero-sub{letter-spacing:.08em}
  .comment-head{flex-direction:column;gap:2px}
  .comment-head span{white-space:normal}
}
@media (max-width:460px){
  .ability-rail,.tool-grid{grid-template-columns:1fr}
  .btn-primary,.btn-ghost{padding:14px 26px;font-size:15px}
  .hero-cta{width:100%}
  .hero-cta .btn-primary,.hero-cta .btn-ghost{width:100%}
}

/* ==========================================================================
   内页：指南 / 协议 / 政策
   ========================================================================== */
.page-head{
  padding:64px 0 30px;
  background:
    radial-gradient(70% 120% at 50% 0%,rgba(94,231,223,.13),transparent 62%),
    linear-gradient(180deg,transparent,rgba(94,231,223,.025),transparent);
}
.crumb{font-size:13.5px;color:var(--muted);letter-spacing:.05em;margin-bottom:18px}
.crumb a:hover{color:var(--aqua)}
.page-head h1{
  font-size:clamp(28px,4.2vw,44px);font-weight:900;letter-spacing:.03em;max-width:900px;
  background:var(--grad-aqua);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-meta{margin-top:16px;display:flex;flex-wrap:wrap;gap:10px 20px;font-size:13.5px;color:var(--muted)}
.page-meta span{display:flex;align-items:center;gap:7px}
.page-meta span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--grad-fire)}

.prose-wrap{padding:36px 0 84px}
.prose{
  max-width:820px;padding:44px 46px;border-radius:var(--radius);
  border:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(158,236,241,.05),rgba(158,236,241,.01));
}
.prose h2{font-size:24px;font-weight:900;color:var(--aqua);margin:40px 0 16px;letter-spacing:.03em}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:18.5px;font-weight:800;color:var(--text);margin:28px 0 12px}
.prose p{color:var(--text-2);margin-bottom:16px}
.prose strong{color:var(--aqua)}
.prose a{color:var(--aqua);border-bottom:1px solid var(--line)}
.prose ul,.prose ol{margin:0 0 18px;padding-left:0;display:grid;gap:10px}
.prose ul>li{position:relative;padding-left:24px;color:var(--text-2);font-size:15.5px}
.prose ul>li::before{content:"";position:absolute;left:4px;top:11px;width:7px;height:7px;border-radius:2px;background:var(--grad-fire)}
.prose ol{counter-reset:prose-ol}
.prose ol>li{counter-increment:prose-ol;position:relative;padding-left:32px;color:var(--text-2);font-size:15.5px}
.prose ol>li::before{
  content:counter(prose-ol);position:absolute;left:0;top:2px;width:20px;height:20px;border-radius:6px;
  display:grid;place-items:center;font-size:12px;font-weight:900;color:#082329;background:var(--grad-aqua);
}
.prose blockquote{
  margin:22px 0;padding:18px 22px;border-left:3px solid var(--aqua);border-radius:0 12px 12px 0;
  background:rgba(94,231,223,.06);color:var(--text-2);font-size:15px;
}
.prose table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px}
.prose th,.prose td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line-soft)}
.prose th{color:var(--aqua);font-weight:800;background:rgba(94,231,223,.06)}
.prose td{color:var(--text-2)}
.prose .note{font-size:13.5px;color:var(--muted)}

.page-cta{
  margin-top:36px;padding:30px 32px;border-radius:var(--radius);text-align:center;
  border:1px solid var(--line);
  background:
    radial-gradient(80% 130% at 50% 0%,rgba(94,231,223,.13),transparent 62%),
    linear-gradient(180deg,rgba(158,236,241,.05),rgba(158,236,241,.01));
}
.page-cta h2{margin:0 0 10px;font-size:22px;font-weight:900;color:var(--text)}
.page-cta p{color:var(--muted);margin-bottom:22px;font-size:15px}

@media (max-width:760px){
  .prose{padding:28px 22px}
  .prose h2{font-size:21px}
  .prose th,.prose td{padding:11px 12px;font-size:14px}
}

/* ==========================================================================
   返回顶部
   ========================================================================== */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;color:var(--aqua);
  background:rgba(7,19,31,.9);
  border:1px solid var(--line);
  box-shadow:0 16px 34px -18px rgba(1,10,18,.95),0 0 0 1px rgba(94,231,223,.04) inset;
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s,transform .25s,visibility .25s,border-color .25s,background .25s;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:rgba(94,231,223,.5);background:rgba(11,36,51,.96);transform:translateY(-3px)}
.to-top svg{width:19px;height:19px;display:block}

/* 右下角投诉入口 */
.float-complaint{
  position:fixed;right:24px;bottom:82px;z-index:70;
  display:inline-flex;align-items:center;gap:7px;
  height:42px;padding:0 15px;border-radius:999px;
  color:#ffd9c9;background:rgba(38,17,21,.92);
  border:1px solid rgba(255,122,112,.34);
  box-shadow:0 16px 34px -18px rgba(1,10,18,.95);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  font-size:13.5px;font-weight:800;letter-spacing:.04em;
  transition:transform .25s,border-color .25s,background .25s,box-shadow .25s;
}
.float-complaint:hover{
  transform:translateY(-3px);
  border-color:rgba(255,122,112,.62);
  background:rgba(52,22,28,.97);
  box-shadow:0 20px 40px -18px rgba(242,84,98,.45);
}
.float-complaint svg{width:16px;height:16px;display:block}

/* ==========================================================================
   投诉与反馈
   ========================================================================== */
.complaint-wrap{padding:32px 0 84px}
.complaint-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:28px;align-items:start}
.form-card{
  padding:34px 34px 30px;border-radius:var(--radius);
  border:1px solid var(--line-soft);
  background:
    radial-gradient(90% 100% at 0% 0%,rgba(94,231,223,.06),transparent 55%),
    linear-gradient(180deg,rgba(158,236,241,.05),rgba(158,236,241,.012));
  box-shadow:var(--shadow-lg);
}
.form-card h2{font-size:23px;font-weight:900;letter-spacing:.02em}
.form-card>p{margin-top:10px;color:var(--muted);font-size:14.5px}
.complaint-form{margin-top:26px}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.field{display:grid;gap:7px}
.field.full{grid-column:1 / -1}
.field label{font-size:13.5px;font-weight:700;color:var(--text-2);letter-spacing:.02em}
.req{color:var(--coral);margin-left:2px}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:10px;
  border:1px solid var(--line-soft);background:rgba(7,19,31,.55);
  color:var(--text);font:inherit;font-size:14.5px;line-height:1.6;
  outline:none;transition:border-color .25s,background .25s,box-shadow .25s;
  color-scheme:dark;
}
.field select{appearance:none;cursor:pointer;padding-right:38px;
  background-image:linear-gradient(45deg,transparent 50%,var(--aqua) 50%),linear-gradient(135deg,var(--aqua) 50%,transparent 50%);
  background-position:calc(100% - 19px) 20px,calc(100% - 14px) 20px;
  background-size:5px 5px,5px 5px;background-repeat:no-repeat;
}
.field option{background:#0a1a28;color:var(--text)}
.field textarea{min-height:158px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#5f7788}
.field input:hover,.field select:hover,.field textarea:hover{border-color:rgba(94,231,223,.24)}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:rgba(94,231,223,.55);background:rgba(7,19,31,.78);
  box-shadow:0 0 0 3px rgba(94,231,223,.08);
}
.form-check{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--muted);line-height:1.65}
.form-check.full{grid-column:1 / -1}
.form-check input{flex:0 0 auto;width:16px;height:16px;margin:3px 0 0;accent-color:var(--aqua);cursor:pointer}
.form-check a{color:var(--aqua);border-bottom:1px solid var(--line)}
.form-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.form-actions .btn-primary,.form-actions .btn-ghost{padding:13px 28px;font-size:15px}
.form-note{margin-top:14px;font-size:12.5px;color:var(--muted)}

.complaint-side{display:grid;gap:16px;position:sticky;top:92px}
.side-card{
  padding:24px 22px;border-radius:var(--radius-sm);
  border:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(158,236,241,.045),rgba(158,236,241,.012));
}
.side-card h3{font-size:16px;font-weight:800;color:var(--aqua);margin-bottom:12px}
.side-card p{color:var(--muted);font-size:13.5px}
.side-card ul{display:grid;gap:8px;margin-top:4px}
.side-card li{position:relative;padding-left:16px;color:var(--text-2);font-size:13.5px}
.side-card li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:var(--grad-fire)}
.side-card .side-contact{display:grid;gap:4px;margin-top:10px;padding:12px 14px;border-radius:10px;background:rgba(7,19,31,.45);border:1px solid var(--line-soft)}
.side-contact strong{font-size:13.5px;color:var(--text)}
.side-contact span{font-size:12.5px;color:var(--muted)}

.complaint-result{
  display:none;margin-top:24px;padding:22px 22px 20px;border-radius:var(--radius-sm);
  border:1px solid rgba(94,231,223,.34);
  background:rgba(94,231,223,.055);
}
.complaint-result.is-open{display:block}
.result-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:8px;margin-bottom:12px}
.result-head h3{font-size:16px;font-weight:800;color:var(--aqua)}
.result-head span{font-size:12px;color:var(--muted);letter-spacing:.04em}
.complaint-result pre{
  margin:0 0 16px;padding:16px;border-radius:10px;border:1px solid var(--line-soft);
  background:rgba(7,19,31,.55);color:var(--text-2);
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  font-size:12.5px;line-height:1.8;white-space:pre-wrap;word-break:break-word;
  max-height:340px;overflow:auto;
}
.copy-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.copy-row .btn-ghost{padding:10px 20px;font-size:14px}
.copy-status{font-size:12.5px;color:var(--aqua)}

.complaint-notes{margin-top:44px}
.complaint-notes .prose{max-width:none}
.complaint-notes .prose h2{font-size:21px}

@media (max-width:1024px){
  .complaint-grid{grid-template-columns:1fr}
  .complaint-side{position:static;grid-template-columns:repeat(3,1fr)}
}
@media (max-width:760px){
  .form-card{padding:26px 20px 24px}
  .form-grid{grid-template-columns:1fr}
  .field.full{grid-column:auto}
  .complaint-side{grid-template-columns:1fr}
  .complaint-wrap{padding:20px 0 60px}
  .complaint-notes{margin-top:30px}
  .to-top{right:16px;bottom:18px;width:44px;height:44px}
  .float-complaint{right:16px;bottom:74px;height:40px;padding:0 13px;font-size:13px}
}