/* ===================================================================
   星聚时代 · 质感升级层 (Premium Layer)
   目标：顶级视觉排版 / 动效打磨 / 3D 交互
   与 style.css 叠加使用，不改动基础结构与内容
   =================================================================== */

:root{
  /* 更沉稳的品牌色阶 */
  --p-ink:#0c0d1c;
  --p-ink-2:#16182e;
  --p-body:#4a4d68;
  --p-muted:#8a8da4;
  --p-primary:#6a5af9;
  --p-primary-2:#4c6ef5;
  --p-cyan:#22d3ee;
  --p-violet:#a55cf5;
  --p-line:rgba(14,16,44,.075);
  --p-line-strong:rgba(106,90,249,.26);
  --p-radius:22px;
  --p-radius-sm:16px;

  /* 动效曲线：统一手感 */
  --ease-out:cubic-bezier(.22,.68,.26,1);
  --ease-spring:cubic-bezier(.34,1.32,.5,1);
  --ease-soft:cubic-bezier(.4,0,.2,1);

  /* 分层阴影令牌 */
  --sh-1:0 1px 1px rgba(14,16,44,.045),0 6px 16px -8px rgba(24,26,70,.16);
  --sh-2:0 1px 1px rgba(14,16,44,.05),0 12px 28px -12px rgba(24,26,70,.22),0 32px 64px -32px rgba(24,26,70,.20);
  --sh-3:0 2px 3px rgba(14,16,44,.06),0 20px 42px -16px rgba(90,80,240,.24),0 52px 92px -40px rgba(90,80,240,.28);

  /* 3D 指针变量（JS 写入） */
  --rx:0deg;
  --ry:0deg;
  --mx:50%;
  --my:50%;
  /* 进入动画排序 */
  --i:0;
}

/* ================= 全局背景与排版基底 ================= */
html{-webkit-tap-highlight-color:transparent}
body{
  color:var(--p-body);
  background:
    radial-gradient(1200px 700px at 12% -8%,rgba(106,90,249,.10),transparent 62%),
    radial-gradient(1100px 700px at 92% 2%,rgba(34,211,238,.09),transparent 60%),
    radial-gradient(900px 620px at 50% 108%,rgba(165,92,245,.07),transparent 64%),
    linear-gradient(180deg,#fbfbff 0%,#f5f7ff 46%,#f8fbff 100%);
  letter-spacing:-.005em;
  font-feature-settings:"kern" 1;
}

/* 细颗粒质感（极淡点阵，避免大面积纯色发闷） */
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(20,22,60,.055) .6px,transparent .6px);
  background-size:3px 3px;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 22%,transparent 78%,#000 100%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 22%,transparent 78%,#000 100%);
}

h1,h2,h3,h4{
  color:var(--p-ink);
  letter-spacing:-.022em;
  font-weight:800;
  text-wrap:balance;
}
p{text-wrap:pretty}
/* 数字使用等宽数位，读数更整 */
.hero-stats .num,.task-card .price,.invite-box .code,.about-visual .big-num,.team-banner .pct,.trust-grid .t b{
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
}

/* 滚动条品牌化 */
@media (pointer:fine){
  html{scrollbar-width:thin;scrollbar-color:rgba(106,90,249,.45) transparent}
}

/* ================= 章节标题升级 ================= */
.section-head .eyebrow{
  position:relative;display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;letter-spacing:.22em;font-weight:700;
  color:var(--p-primary);text-transform:uppercase;
  padding:6px 16px;border-radius:999px;
  background:linear-gradient(135deg,rgba(106,90,249,.10),rgba(76,110,245,.06));
  border:1px solid rgba(106,90,249,.16);
  margin-bottom:20px;
}
.section-head .eyebrow::before{
  content:"";width:5px;height:5px;border-radius:50%;
  background:linear-gradient(135deg,var(--p-primary),var(--p-cyan));
  box-shadow:0 0 0 3px rgba(106,90,249,.14);
}
.section-head h2{
  font-size:clamp(26px,4vw,38px);
  line-height:1.24;
  margin-bottom:14px;
}
.section-head p{color:var(--p-muted);font-size:15.5px;max-width:620px;margin:0 auto}
/* 标题下的细光带 */
.section-head::after{
  content:"";display:block;width:56px;height:2px;margin:22px auto 0;
  border-radius:2px;
  background:linear-gradient(90deg,transparent,var(--p-primary),var(--p-cyan),transparent);
  opacity:.55;
}

/* ================= 按钮：内高光 + 磁吸 + 流光 ================= */
.btn{
  position:relative;overflow:hidden;isolation:isolate;
  letter-spacing:.01em;
  --mag-x:0px;
  --mag-y:0px;
  transform:translate3d(var(--mag-x),var(--mag-y),0);
  transition:transform .45s var(--ease-spring),box-shadow .45s var(--ease-out),background .35s,border-color .35s;
}
/* 磁吸与既有 hover 上浮合成，避免互相覆盖 */
@media (hover:hover) and (pointer:fine){
  .btn-primary:hover,.btn-ghost:hover,.btn-light:hover{
    transform:translate3d(var(--mag-x),calc(var(--mag-y) - 3px),0);
  }
}
.btn:active{
  transform:translate3d(var(--mag-x),var(--mag-y),0) scale(.97);
}
.btn-primary{
  background:linear-gradient(135deg,#8172ff 0%,#5d6bf3 48%,#3d7bf5 100%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.42),
    inset 0 -1px 0 rgba(40,30,120,.28),
    0 8px 18px -8px rgba(90,80,240,.55),
    0 22px 46px -20px rgba(80,95,245,.55);
}
/* 顶部内高光，模拟玻璃曲面 */
.btn-primary::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(180deg,rgba(255,255,255,.28),rgba(255,255,255,0) 52%);
}
/* 流光扫过 */
.btn-primary::after{
  content:"";position:absolute;top:0;left:-70%;width:45%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.55),transparent);
  transform:skewX(-18deg);opacity:0;pointer-events:none;
}
.btn-ghost{
  background:rgba(255,255,255,.86);
  border-color:rgba(106,90,249,.42);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.9),0 6px 16px -10px rgba(24,26,70,.22);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.btn-light{
  box-shadow:inset 0 1px 0 rgba(255,255,255,.9),0 10px 24px -12px rgba(10,12,40,.4);
}

@media (hover:hover) and (pointer:fine){
  .btn-primary:hover{
    box-shadow:
      inset 0 1px 0 rgba(255,255,255,.5),
      0 12px 24px -8px rgba(90,80,240,.6),
      0 32px 62px -22px rgba(80,95,245,.62);
  }
  .btn-primary:hover::after{
    animation:btnSheen .85s var(--ease-out) forwards;
  }
  .btn-ghost:hover{
    background:#fff;border-color:rgba(106,90,249,.62);
    box-shadow:inset 0 1px 0 #fff,0 12px 26px -14px rgba(106,90,249,.5);
  }
}
@keyframes btnSheen{
  0%{left:-70%;opacity:0}
  18%{opacity:1}
  100%{left:130%;opacity:0}
}

/* ================= 头部导航 ================= */
.header{
  background:rgba(250,251,255,.72);
  backdrop-filter:blur(22px) saturate(190%);
  -webkit-backdrop-filter:blur(22px) saturate(190%);
  border-bottom:1px solid rgba(255,255,255,.7);
}
.header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(106,90,249,.30),rgba(34,211,238,.24),transparent);
  opacity:.7;pointer-events:none;
}
.header.scrolled{
  background:rgba(255,255,255,.82);
  box-shadow:0 1px 0 rgba(14,16,44,.04),0 10px 30px -14px rgba(24,26,70,.28);
}
.logo-mark{filter:drop-shadow(0 4px 10px rgba(230,57,70,.32))}
.logo{transition:transform .4s var(--ease-spring)}
.logo:active{transform:scale(.97)}

/* 导航滑动指示胶囊（JS 注入） */
.nav-menu{position:relative}
.nav-pill{
  position:absolute;top:50%;left:0;height:32px;border-radius:999px;z-index:0;
  transform:translateY(-50%);
  background:linear-gradient(135deg,rgba(106,90,249,.14),rgba(76,110,245,.10));
  border:1px solid rgba(106,90,249,.16);
  opacity:0;pointer-events:none;
  transition:transform .5s var(--ease-out),width .5s var(--ease-out),opacity .3s;
}
.nav-menu a{position:relative;z-index:1;padding:7px 12px;border-radius:999px}
.nav-menu a::after{display:none}
.nav-menu a.active{color:var(--p-primary-2)}

/* 顶部滚动进度线 */
.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:2.5px;z-index:220;
  transform-origin:0 50%;transform:scaleX(0);
  background:linear-gradient(90deg,var(--p-primary),#4c6ef5 45%,var(--p-cyan));
  box-shadow:0 0 12px rgba(106,90,249,.5);
  pointer-events:none;will-change:transform;
}

/* ================= Hero ================= */
.hero{
  position:relative;isolation:isolate;
  background:
    radial-gradient(1100px 560px at 86% -16%,rgba(106,90,249,.20),transparent 62%),
    radial-gradient(920px 520px at -6% 14%,rgba(76,110,245,.17),transparent 58%),
    radial-gradient(760px 460px at 52% 116%,rgba(34,211,238,.13),transparent 62%),
    linear-gradient(180deg,#f7f5ff 0%,#eef3ff 66%,#f5f8ff 100%);
}
/* 缓慢漂浮的光晕球 */
.hero::after{
  content:"";position:absolute;z-index:0;pointer-events:none;
  width:min(520px,52vw);height:min(520px,52vw);right:-8%;top:-14%;
  border-radius:50%;
  background:radial-gradient(circle at 34% 34%,rgba(165,92,245,.34),rgba(106,90,249,.16) 46%,transparent 72%);
  filter:blur(26px);opacity:.85;
  animation:orbFloat 16s ease-in-out infinite;
}
@keyframes orbFloat{
  0%,100%{transform:translate3d(0,0,0) scale(1)}
  50%{transform:translate3d(-3%,5%,0) scale(1.07)}
}
.hero h1{
  font-size:clamp(32px,5.2vw,50px);
  line-height:1.16;
  letter-spacing:-.032em;
  margin-bottom:20px;
}
.hero h1 .text-gradient{
  display:inline-block;
  background:linear-gradient(120deg,#6a5af9 0%,#4c6ef5 42%,#22b8ee 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  filter:drop-shadow(0 6px 18px rgba(76,110,245,.18));
}
.hero .slogan{
  font-size:clamp(17px,2.4vw,21px);
  letter-spacing:.01em;
  color:var(--p-primary);font-weight:700;
  display:flex;align-items:center;gap:12px;
}
.hero .slogan::before{
  content:"";width:26px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--p-primary),transparent);
}
.hero p.lead{color:var(--p-body);font-size:16.5px;line-height:1.85}

.hero-badge{
  background:linear-gradient(135deg,rgba(255,255,255,.9),rgba(246,244,255,.7));
  border:1px solid rgba(106,90,249,.18);
  color:var(--p-primary);font-size:12.5px;letter-spacing:.08em;
  box-shadow:inset 0 1px 0 #fff,0 6px 18px -10px rgba(106,90,249,.4);
}
.hero-badge::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--p-primary);
  box-shadow:0 0 0 4px rgba(106,90,249,.14);
  animation:pulseDot 2.4s ease-in-out infinite;
}
@keyframes pulseDot{
  0%,100%{box-shadow:0 0 0 3px rgba(106,90,249,.16);opacity:1}
  50%{box-shadow:0 0 0 7px rgba(106,90,249,.05);opacity:.85}
}
.hero-badge{display:inline-flex;align-items:center;gap:9px}

/* 数据条：玻璃 + 顶部高光 */
.hero-stats .stat{
  position:relative;
  background:linear-gradient(180deg,rgba(255,255,255,.94),rgba(250,251,255,.72));
  border:1px solid rgba(255,255,255,.9);
  box-shadow:inset 0 1px 0 #fff,0 1px 2px rgba(14,16,44,.04),0 14px 30px -18px rgba(24,26,70,.30);
  border-radius:16px;
  transition:transform .45s var(--ease-spring),box-shadow .45s var(--ease-out);
  overflow:hidden;
}
.hero-stats .stat::before{
  content:"";position:absolute;top:0;left:14%;right:14%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(106,90,249,.5),transparent);
}
.hero-stats .num{
  font-weight:850;
  background:linear-gradient(135deg,#6a5af9,#3d7bf5);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
@media (hover:hover) and (pointer:fine){
  .hero-stats .stat:hover{transform:translateY(-4px);box-shadow:inset 0 1px 0 #fff,0 20px 40px -20px rgba(90,80,240,.42)}
}

/* ================= 轮播：3D 立体玻璃框 ================= */
.glass-carousel{
  border-radius:28px;
  background:linear-gradient(160deg,rgba(255,255,255,.78),rgba(246,247,255,.55));
  border:1px solid rgba(255,255,255,.9);
  backdrop-filter:blur(24px) saturate(180%);
  -webkit-backdrop-filter:blur(24px) saturate(180%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.95),
    inset 0 -1px 0 rgba(120,120,180,.10),
    0 2px 4px rgba(14,16,44,.05),
    0 30px 66px -26px rgba(72,52,212,.36),
    0 70px 120px -60px rgba(72,52,212,.4);
  transform:perspective(1500px) rotateX(var(--cx,0deg)) rotateY(var(--cy,0deg)) translateZ(0);
  transition:transform .7s var(--ease-out),box-shadow .7s var(--ease-out);
  will-change:transform;
}
/* 边框内缘光圈（不影响图片本体） */
.glass-carousel::before{
  content:"";position:absolute;inset:0;border-radius:28px;pointer-events:none;z-index:3;
  background:linear-gradient(130deg,rgba(255,255,255,.28),transparent 34%,transparent 70%,rgba(106,90,249,.10));
  opacity:.7;
}
/* 底部柔和投影，制造悬空感 */
.glass-carousel .carousel-viewport{
  box-shadow:0 1px 0 rgba(255,255,255,.9),0 18px 40px -24px rgba(24,26,70,.45);
}
.carousel-slide img{
  transition:transform 1.2s var(--ease-out),filter .6s;
}
@media (hover:hover) and (pointer:fine){
  .glass-carousel:hover{
    box-shadow:
      inset 0 1px 0 rgba(255,255,255,.95),
      0 40px 82px -28px rgba(72,52,212,.44),
      0 90px 140px -60px rgba(72,52,212,.44);
  }
}
.carousel-arrow{
  border-radius:50%;
  background:linear-gradient(180deg,rgba(255,255,255,.95),rgba(246,247,255,.82));
  border:1px solid rgba(255,255,255,.95);
  box-shadow:inset 0 1px 0 #fff,0 10px 24px -12px rgba(24,26,70,.4);
  color:var(--p-primary);
}
.car-dot{height:8px;width:8px;background:rgba(106,90,249,.24)}
.car-dot.active{height:8px;background:linear-gradient(90deg,var(--p-primary),var(--p-primary-2));box-shadow:0 2px 8px rgba(106,90,249,.45)}

/* ================= 信任条：深色高级带 ================= */
.trust{
  background:linear-gradient(120deg,#111226 0%,#191a38 48%,#1f1a45 100%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.12),inset 0 -1px 0 rgba(0,0,0,.3),0 20px 46px -28px rgba(10,12,40,.6);
  position:relative;overflow:hidden;padding:38px 0;
}
.trust::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(106,90,249,.7),rgba(34,211,238,.55),transparent);
}
.trust::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(700px 240px at 18% 0%,rgba(106,90,249,.30),transparent 62%),
    radial-gradient(700px 240px at 84% 100%,rgba(34,211,238,.18),transparent 62%);
}
.trust-grid{position:relative;z-index:1}
.trust-grid .t{position:relative;padding:4px 10px}
.trust-grid .t+.t::before{
  content:"";position:absolute;left:-10px;top:16%;bottom:16%;width:1px;
  background:linear-gradient(180deg,transparent,rgba(255,255,255,.22),transparent);
}
.trust-grid .t b{
  font-size:clamp(16px,2vw,19px);letter-spacing:-.01em;
  background:linear-gradient(120deg,#fff,#c9ccf5 55%,#8ee9f7);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.trust-grid .t span{color:rgba(200,204,240,.86);font-size:13px;letter-spacing:.02em}
@media(max-width:768px){
  .trust-grid .t+.t::before{display:none}
}

/* ================= 通用卡片：3D 倾斜 + 光斑 ================= */
.task-card,.feature-card,.why-card,.news-card,.step-card,.mentor-card,.news-list-item{
  position:relative;isolation:isolate;
  border-radius:var(--p-radius);
  border:1px solid var(--p-line);
  background:
    radial-gradient(340px circle at var(--mx) var(--my),rgba(106,90,249,.10),transparent 62%),
    linear-gradient(180deg,rgba(255,255,255,.97),rgba(252,253,255,.90));
  box-shadow:var(--sh-1);
  transition:
    transform .5s var(--ease-out),
    box-shadow .5s var(--ease-out),
    border-color .5s var(--ease-out);
  will-change:transform;
}
/* 内缘高光（顶部一线） */
.task-card::before,.feature-card::before,.why-card::before,.step-card::before,.mentor-card::before{
  content:"";position:absolute;top:0;left:18px;right:18px;height:1px;z-index:2;pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.95),transparent);
}
/* 底部品牌色渗光 */
.task-card::after,.feature-card::after,.why-card::after,.step-card::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:42%;z-index:-1;pointer-events:none;
  background:linear-gradient(0deg,rgba(106,90,249,.07),transparent 78%);
  opacity:0;transition:opacity .5s var(--ease-out);
}

/* 3D 悬停：由 CSS 变量驱动，JS 只写变量 */
@media (hover:hover) and (pointer:fine){
  .task-card:hover,.feature-card:hover,.why-card:hover,.step-card:hover,.mentor-card:hover,.news-card:hover,.news-list-item:hover{
    transform:perspective(1100px) rotateX(var(--rx)) rotateY(var(--ry)) translateY(-8px);
    box-shadow:var(--sh-3);
    border-color:var(--p-line-strong);
  }
  .task-card:hover::after,.feature-card:hover::after,.why-card:hover::after,.step-card:hover::after{opacity:1}
}
.task-card:active,.feature-card:active,.why-card:active,.step-card:active,.news-card:active,.mentor-card:active{
  transform:perspective(1100px) translateY(-2px) scale(.995);
}

/* 卡片原有顶部渐变条保留但更细 */
.task-card::after{height:3px;background:linear-gradient(90deg,var(--p-primary),var(--p-primary-2),var(--p-cyan));opacity:0}
.task-card:hover::after{opacity:1}

.task-card{padding:26px 24px}
.task-card h3{font-size:17.5px;letter-spacing:-.01em}
.task-card .price{
  font-size:30px;letter-spacing:-.03em;
  background:linear-gradient(135deg,#6a5af9,#3d7bf5);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.task-card .ticon{
  background:linear-gradient(160deg,#f4f2ff,#eaf1ff);
  border:1px solid rgba(255,255,255,.9);
  box-shadow:inset 0 1px 0 #fff,0 10px 22px -12px rgba(72,52,212,.35);
  transition:transform .5s var(--ease-spring),box-shadow .5s var(--ease-out);
}
@media (hover:hover) and (pointer:fine){
  .task-card:hover .ticon{transform:scale(1.06);box-shadow:inset 0 1px 0 #fff,0 16px 30px -14px rgba(72,52,212,.45)}
}
.task-card .pay-tag{
  background:linear-gradient(135deg,rgba(106,90,249,.14),rgba(76,110,245,.10));
  border:1px solid rgba(106,90,249,.2);
}
.task-card .tcycle{background:linear-gradient(135deg,#fff6e6,#ffefd6);color:#c2761b;border:1px solid rgba(217,119,6,.16)}

.feature-card{padding:34px 30px}
.feature-card .ficon{
  background:linear-gradient(160deg,#f4f2ff,#e9f2ff);
  border:1px solid rgba(255,255,255,.9);
  box-shadow:inset 0 1px 0 #fff,0 10px 22px -12px rgba(72,52,212,.35);
  transition:transform .5s var(--ease-spring);
}
@media (hover:hover) and (pointer:fine){
  .feature-card:hover .ficon{transform:rotate(-4deg) scale(1.05)}
}
.feature-card h3{font-size:19px}
.feature-card p{color:var(--p-muted);line-height:1.75}

.why-card{padding:34px 24px}
.why-card .wicon{
  background:linear-gradient(150deg,#8172ff,#5a6cf0 55%,#3d7bf5);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.45),0 14px 28px -12px rgba(90,80,240,.55);
  transition:transform .5s var(--ease-spring);
}
@media (hover:hover) and (pointer:fine){
  .why-card:hover .wicon{transform:rotate(-5deg) scale(1.04)}
}

.mentor-card{padding:26px 14px}
.mentor-avatar{
  background:linear-gradient(150deg,#f2efff,#e7f0ff);
  border:1px solid rgba(255,255,255,.9);
  box-shadow:inset 0 1px 0 #fff,0 12px 26px -14px rgba(72,52,212,.4);
  transition:transform .55s var(--ease-spring),box-shadow .5s;
}
@media (hover:hover) and (pointer:fine){
  .mentor-card:hover .mentor-avatar{transform:scale(1.07);box-shadow:inset 0 1px 0 #fff,0 18px 34px -14px rgba(72,52,212,.5)}
}

.news-card{padding:28px 26px}
.news-card::before{
  height:3px;opacity:0;
  background:linear-gradient(90deg,var(--p-primary),var(--p-cyan));
  transition:opacity .45s var(--ease-out);
  z-index:2;
}
.news-card h3{font-size:18px;letter-spacing:-.012em;line-height:1.5}
.news-card .more{transition:gap .35s var(--ease-out),color .3s}
@media (hover:hover) and (pointer:fine){
  .news-card:hover .more{gap:12px}
}

.step-card{padding:34px 28px}
.step-card .num{
  background:linear-gradient(150deg,#8172ff,#5a6cf0 55%,#3d7bf5);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.45),0 14px 28px -12px rgba(90,80,240,.55);
  font-variant-numeric:tabular-nums;
}

.news-list-item{padding:24px 26px}
.news-list-item h3{font-size:17.5px}

/* ================= 关于：大数字 3D 立体 ================= */
.about-visual{
  background:linear-gradient(160deg,#f3f0ff 0%,#e9f1ff 52%,#eafcff 100%);
  border:1px solid rgba(255,255,255,.92);
  border-radius:26px;
  box-shadow:inset 0 1px 0 #fff,0 1px 2px rgba(14,16,44,.05),0 30px 60px -34px rgba(72,52,212,.4);
  overflow:hidden;
  position:relative;
}
.about-visual::before{
  content:"";position:absolute;width:300px;height:300px;right:-70px;bottom:-90px;border-radius:50%;
  background:radial-gradient(circle,rgba(106,90,249,.22),transparent 68%);filter:blur(12px);
}
.about-visual .big-num{
  position:relative;z-index:1;
  font-size:clamp(84px,15vw,142px);
  letter-spacing:-.045em;
  background:linear-gradient(150deg,#6a5af9 0%,#4c6ef5 46%,#22b8ee 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  filter:drop-shadow(0 10px 26px rgba(90,80,240,.28));
}
.about-visual .cap{position:relative;z-index:1;color:var(--p-ink);letter-spacing:.01em}

/* ================= 团队激励横幅 ================= */
.team-banner{
  background:linear-gradient(120deg,#151632 0%,#1d1b46 46%,#2a1c52 100%);
  border:1px solid rgba(255,255,255,.10);
  border-radius:24px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14),0 30px 66px -34px rgba(20,22,60,.7);
  position:relative;overflow:hidden;
}
.team-banner::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(600px 300px at 14% -10%,rgba(106,90,249,.42),transparent 62%),
    radial-gradient(600px 320px at 92% 110%,rgba(34,211,238,.22),transparent 62%);
}
.team-banner>*{position:relative;z-index:1}
.team-banner .pct{
  display:inline-block;
  background:linear-gradient(120deg,#fff,#a9b6ff 55%,#7de9f7);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  filter:drop-shadow(0 6px 18px rgba(120,140,255,.45));
}

/* ================= 导师附加卡 ================= */
.mentor-box{
  background:linear-gradient(160deg,rgba(255,255,255,.94),rgba(244,247,255,.82));
  border:1px solid rgba(255,255,255,.92);
  border-radius:20px;
  box-shadow:inset 0 1px 0 #fff,0 1px 2px rgba(14,16,44,.04),0 22px 46px -26px rgba(24,26,70,.32);
  transition:transform .5s var(--ease-out),box-shadow .5s var(--ease-out);
}
@media (hover:hover) and (pointer:fine){
  .mentor-box:hover{transform:translateY(-5px);box-shadow:inset 0 1px 0 #fff,0 30px 60px -28px rgba(72,52,212,.42)}
}
.mentor-box .mic{box-shadow:inset 0 1px 0 rgba(255,255,255,.45),0 14px 28px -12px rgba(90,80,240,.52)}

/* ================= 注册邀请码盒 ================= */
.invite-box{
  background:linear-gradient(160deg,#f5f2ff 0%,#eaf1ff 55%,#ecfbff 100%);
  border:1px dashed rgba(106,90,249,.45);
  border-radius:24px;
  box-shadow:inset 0 1px 0 #fff,0 22px 50px -30px rgba(72,52,212,.4);
  position:relative;overflow:hidden;
}
.invite-box::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:60%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(106,90,249,.7),transparent);
}
.invite-box .code{
  letter-spacing:.16em;
  background:linear-gradient(135deg,#6a5af9,#3d7bf5);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  filter:drop-shadow(0 8px 22px rgba(90,80,240,.28));
}

/* ================= FAQ 精修 ================= */
.faq-item{
  border-radius:16px;
  border:1px solid var(--p-line);
  background:linear-gradient(180deg,#fff,rgba(252,253,255,.94));
  box-shadow:var(--sh-1);
  transition:box-shadow .45s var(--ease-out),border-color .45s var(--ease-out),transform .45s var(--ease-out);
}
.faq-item.open{
  border-color:rgba(106,90,249,.3);
  box-shadow:inset 3px 0 0 rgba(106,90,249,.55),0 18px 40px -22px rgba(72,52,212,.35);
}
@media (hover:hover) and (pointer:fine){
  .faq-item:hover{box-shadow:inset 3px 0 0 rgba(106,90,249,.35),0 14px 32px -20px rgba(24,26,70,.3)}
}
.faq-q .arrow{transition:transform .45s var(--ease-spring),color .3s}

/* ================= 底部 CTA ================= */
.cta-band{
  background:linear-gradient(120deg,#151632 0%,#1e1b48 48%,#2b1c55 100%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14);
  position:relative;overflow:hidden;
}
.cta-band h2{
  background:linear-gradient(120deg,#fff,#c9d2ff 55%,#8ee9f7);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  letter-spacing:-.022em;
}

/* ================= 页脚 ================= */
.footer{
  background:linear-gradient(180deg,#0f1024 0%,#12142c 100%);
  position:relative;
}
.footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(106,90,249,.55),rgba(34,211,238,.4),transparent);
}

/* ================= 回到顶部 ================= */
.back-top{
  border-radius:14px;
  background:linear-gradient(150deg,#8172ff,#5a6cf0 55%,#3d7bf5);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.4),0 14px 30px -12px rgba(90,80,240,.6);
  transition:opacity .35s,transform .45s var(--ease-spring),box-shadow .35s;
}
@media (hover:hover) and (pointer:fine){
  .back-top:hover{transform:translateY(-4px);box-shadow:inset 0 1px 0 rgba(255,255,255,.4),0 20px 40px -14px rgba(90,80,240,.7)}
}

/* ================= 入场动画：更细腻的位移与缩放 ================= */
.reveal{
  opacity:0;
  transform:translate3d(0,26px,0) scale(.985);
  filter:blur(4px);
  transition:
    opacity .8s var(--ease-out),
    transform .8s var(--ease-out),
    filter .8s var(--ease-out);
  transition-delay:calc(var(--i) * 70ms);
  will-change:opacity,transform;
}
.reveal.visible{opacity:1;transform:none;filter:none}

/* 标题进场：轻微上浮 + 去模糊 */
.reveal-title{
  opacity:0;transform:translate3d(0,18px,0);
  transition:opacity .7s var(--ease-out),transform .7s var(--ease-out);
}
.reveal-title.visible{opacity:1;transform:none}

/* ================= 文章页精修 ================= */
.article-head h1{letter-spacing:-.028em}
.article-head{border-bottom:none;position:relative;padding-bottom:30px}
.article-head::after{
  content:"";position:absolute;left:0;bottom:0;width:72px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--p-primary),var(--p-cyan));
}
.article-body{font-size:17px;line-height:1.9;color:var(--p-body)}
.article-body p{line-height:1.92;margin-bottom:18px}
.article-body h2{
  font-size:clamp(21px,3vw,26px);
  margin:42px 0 18px;
  padding-left:16px;
  letter-spacing:-.022em;
}
.article-body h2::before{width:4px;height:24px;background:linear-gradient(180deg,var(--p-primary),var(--p-primary-2))}
.article-body h3{color:var(--p-primary-2);font-size:19px;letter-spacing:-.012em}
.post-cta{
  border-radius:22px;
  background:
    radial-gradient(420px 200px at 20% 0%,rgba(106,90,249,.16),transparent 62%),
    linear-gradient(160deg,#f7f5ff,#ecf2ff);
  border:1px solid rgba(106,90,249,.22);
  box-shadow:inset 0 1px 0 #fff,0 22px 48px -30px rgba(72,52,212,.45);
}

/* ================= 微交互：链接下划线生长 ================= */
.footer li a{position:relative;transition:color .3s}
.footer li a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1px;
  background:rgba(255,255,255,.6);transition:width .35s var(--ease-out);
}
@media (hover:hover) and (pointer:fine){
  .footer li a:hover::after{width:100%}
}

/* ================= 减少动态：全量降级 ================= */
@media (prefers-reduced-motion:reduce){
  .reveal,.reveal-title{opacity:1!important;transform:none!important;filter:none!important}
  .hero::after{animation:none!important}
  .btn-primary::after{display:none!important}
  .glass-carousel{transform:none!important}
}

/* 触屏设备：关闭 3D 倾斜，保留阴影与色彩 */
@media (hover:none),(pointer:coarse){
  .glass-carousel{transform:none}
  .task-card,.feature-card,.why-card,.news-card,.step-card,.mentor-card,.news-list-item{transform:none}
}

/* ================= 移动端细节收敛 ================= */
@media(max-width:768px){
  .hero h1{font-size:clamp(28px,7.4vw,38px);line-height:1.2}
  .section-head h2{font-size:clamp(23px,6.2vw,30px)}
  .glass-carousel{transform:none;border-radius:22px}
  .task-card .price{font-size:27px}
}
@media(max-width:520px){
  .btn{padding:14px 26px}
  .hero-stats .stat{padding:14px 10px}
  .section-head .eyebrow{font-size:11.5px;padding:5px 13px;letter-spacing:.16em}
}

/* ================= 桌面 Hero 居中构图（品牌主视觉） ================= */
@media(min-width:993px){
  .hero{padding-bottom:clamp(58px,7vw,86px)}
  .hero-copy{
    max-width:900px;margin:0 auto;text-align:center;
  }
  .hero h1{font-size:clamp(40px,4.2vw,54px)}
  .hero .slogan{justify-content:center;font-size:clamp(17px,1.6vw,20px)}
  .hero .slogan::before{display:none}
  .hero p.lead{
    max-width:760px;margin:0 auto 32px;
    font-size:17px;line-height:1.9;
  }
  .hero-actions{justify-content:center;margin-bottom:40px}
  .hero-badge{margin-bottom:24px}
  .hero-stats{
    max-width:880px;margin:0 auto;
    gap:16px;
  }
  .hero-grid{gap:clamp(38px,4vw,54px)}
}

/* ================= 细节层次强化 ================= */

/* 功能图标更大、带品牌描边环 */
.feature-card .ficon{
  width:72px;height:72px;padding:13px;
  border-radius:18px;
  background:linear-gradient(160deg,#f5f3ff,#e9f2ff 62%,#eafcff);
  box-shadow:
    inset 0 1px 0 #fff,
    0 0 0 1px rgba(106,90,249,.08),
    0 12px 26px -14px rgba(72,52,212,.38);
  margin-bottom:20px;
}

/* 导师头像：渐变描边环 + 立体感 */
.mentor-avatar{
  position:relative;
  background:linear-gradient(160deg,#f6f4ff,#eaf2ff);
  box-shadow:
    inset 0 1px 0 #fff,
    0 0 0 1px rgba(106,90,249,.10),
    0 0 0 4px rgba(106,90,249,.07),
    0 12px 26px -16px rgba(72,52,212,.45);
  transition:transform .55s var(--ease-spring),box-shadow .5s,background .5s;
}
@media (hover:hover) and (pointer:fine){
  .mentor-card:hover .mentor-avatar{
    background:linear-gradient(160deg,#f1edff,#e4efff);
    box-shadow:
      inset 0 1px 0 #fff,
      0 0 0 1px rgba(106,90,249,.20),
      0 0 0 5px rgba(106,90,249,.12),
      0 16px 32px -14px rgba(72,52,212,.5);
  }
}
.mentor-card h4{letter-spacing:-.01em}
.mentor-card span{color:var(--p-muted);letter-spacing:.02em}

/* 邀请码：更醒目、更有厚度 */
.invite-box .code{
  font-size:clamp(42px,7vw,62px);
  line-height:1.12;
  letter-spacing:.14em;
  margin:6px 0 8px;
  filter:drop-shadow(0 10px 26px rgba(90,80,240,.30));
}
.invite-box .btn{margin-top:6px;padding:15px 34px;font-size:16px}

/* 资讯卡片：日期做成小胶囊 */
.news-card .news-date{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  background:linear-gradient(135deg,rgba(106,90,249,.09),rgba(76,110,245,.06));
  border:1px solid rgba(106,90,249,.14);
  color:var(--p-primary);
  font-size:12.5px;letter-spacing:.01em;
  margin-bottom:14px;
}
.news-card .news-date::before{
  content:"";width:5px;height:5px;border-radius:50%;
  background:linear-gradient(135deg,var(--p-primary),var(--p-cyan));
}

/* FAQ：问号侧条与箭头精修 */
.faq-q{padding:22px 28px;letter-spacing:-.008em}
.faq-q .arrow{
  width:26px;height:26px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(106,90,249,.10),rgba(76,110,245,.07));
  border:1px solid rgba(106,90,249,.14);
  font-size:14px;font-weight:700;
  transition:transform .45s var(--ease-spring),background .3s,border-color .3s;
}
.faq-item.open .faq-q .arrow{
  background:linear-gradient(135deg,var(--p-primary),var(--p-primary-2));
  border-color:transparent;color:#fff;
}

/* 团队激励 banner 内的百分比更立体 */
.team-banner .pct{font-size:clamp(38px,4.6vw,50px);letter-spacing:-.04em}

/* 数据条：数字与标签的层次 */
.hero-stats .lbl{color:var(--p-muted);letter-spacing:.06em;font-size:11.5px;margin-top:4px}
.hero-stats .num{letter-spacing:-.03em}

/* 步骤卡序号：立体浮雕 */
.step-card .num{
  font-size:18px;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.5),
    inset 0 -2px 6px rgba(40,30,120,.22),
    0 12px 24px -10px rgba(90,80,240,.55);
}
.step-card h3{letter-spacing:-.015em}

/* 分节之间增加一条极细过渡光，避免大面积纯色 */
.about,.process,.news,.mentor{position:relative}
.about::before,.process::before,.news::before,.mentor::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:min(560px,70%);height:1px;pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(106,90,249,.18),rgba(34,211,238,.14),transparent);
}

/* ===== 文章返回按钮（gw 浅色） ===== */
.back-btn{display:inline-flex;align-items:center;gap:6px;margin-bottom:16px;padding:9px 16px;
  background:#fff;border:1px solid rgba(12,13,28,.1);border-radius:999px;color:#0c0d1c;
  font-size:13.5px;font-weight:600;box-shadow:0 4px 14px rgba(12,13,28,.06);transition:all .25s ease}
.back-btn:hover{color:#e63946;border-color:rgba(230,57,70,.35);transform:translateX(-2px)}

/* ===== 分类筛选（gw 浅色） ===== */
.cat-chips{display:flex;flex-wrap:wrap;gap:10px;margin:8px 0 12px}
.cat-chip{display:inline-flex;align-items:center;gap:7px;padding:9px 16px;border-radius:999px;
  background:#fff;border:1px solid rgba(12,13,28,.1);font-size:13.5px;font-weight:600;color:#5a607a;
  cursor:pointer;transition:all .25s ease}
.cat-chip span{font-size:12px;font-weight:700;color:#e63946;background:rgba(230,57,70,.1);
  border-radius:999px;padding:1px 8px;line-height:1.5}
.cat-chip:hover{border-color:rgba(230,57,70,.4);color:#0c0d1c}
.cat-chip.active{background:linear-gradient(120deg,#e63946,#ff7a4d);border-color:transparent;color:#fff;box-shadow:0 10px 24px rgba(230,57,70,.28)}
.cat-chip.active span{background:rgba(255,255,255,.22);color:#fff}
.cat-result{font-size:13px;color:#5a607a;margin:0 0 16px}