:root{
    --main:#0891b2;
    --accent:#0ea5e9;
    --bg:#ecfeff;
    --text:#083344;
    --card:#ffffff;
    --line:rgba(8,145,178,.18);
    --shadow-lg:0 18px 38px -12px rgba(8,51,68,.28), 0 4px 10px rgba(8,51,68,.08);
    --shadow-sm:0 6px 16px -6px rgba(8,51,68,.24);
    --shadow-in:inset 0 1px 0 rgba(255,255,255,.9);
    --radius:18px;
    --sidebar-w:250px;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:'Inter','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
    background:var(--bg);
    color:var(--text);
    line-height:1.85;
    font-weight:400;
    -webkit-font-smoothing:antialiased;
    background-image:
      radial-gradient(circle at 18% 12%, rgba(14,165,233,.10), transparent 46%),
      radial-gradient(circle at 88% 4%, rgba(8,145,178,.10), transparent 40%),
      url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
    background-attachment:fixed;
  }
  h1,h2,h3,h4,h5,.heavy{
    font-weight:900;
    letter-spacing:-.5px;
    line-height:1.32;
    color:var(--text);
  }
  a{text-decoration:none;color:var(--main);}
  a:hover{color:var(--accent);}
  .mono{font-family:'SFMono-Regular',Consolas,'Courier New',monospace;font-weight:700;letter-spacing:-.5px;}

  /* 阅读进度条 */
  #readbar{
    position:fixed;top:0;left:0;height:4px;width:0%;
    background:linear-gradient(90deg,var(--main),var(--accent),#67e8f9);
    z-index:2000;
    box-shadow:0 0 12px rgba(14,165,233,.85);
    transition:width .08s linear;
  }

  /* 侧栏 */
  .side{
    position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
    background:linear-gradient(170deg,#0b5f76 0%,#083344 100%);
    padding:26px 18px;
    overflow-y:auto;
    z-index:1040;
    box-shadow:8px 0 30px -18px rgba(8,51,68,.85);
    border-right:1px solid rgba(255,255,255,.08);
  }
  .side::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='m'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23m)' opacity='0.05'/%3E%3C/svg%3E");
  }
  .brand-wrap{position:relative;z-index:1;display:block;margin-bottom:26px;}
  .brand-badge{
    display:flex;align-items:center;gap:9px;
    font-weight:900;font-size:1.16rem;color:#fff;
    background:linear-gradient(145deg,rgba(255,255,255,.17),rgba(255,255,255,.05));
    border:1px solid rgba(255,255,255,.22);
    border-radius:14px;padding:11px 13px;
    box-shadow:0 8px 20px -10px rgba(0,0,0,.7), var(--shadow-in);
  }
  .brand-badge i{color:#67e8f9;font-size:1rem;}
  .side-nav{position:relative;z-index:1;display:flex;flex-direction:column;gap:6px;}
  .side-nav a{
    display:flex;align-items:center;gap:11px;
    color:#cdeef7;font-size:.94rem;font-weight:600;
    padding:11px 13px;border-radius:12px;
    border:1px solid transparent;
    transition:.22s ease;
  }
  .side-nav a i{width:17px;text-align:center;font-size:.9rem;opacity:.85;}
  .side-nav a:hover{
    background:linear-gradient(145deg,rgba(255,255,255,.16),rgba(255,255,255,.04));
    border-color:rgba(255,255,255,.2);
    color:#fff;transform:translateX(3px);
    box-shadow:0 8px 18px -12px #000;
  }
  .side-nav a.active{
    background:linear-gradient(145deg,var(--accent),var(--main));
    color:#fff;border-color:rgba(255,255,255,.3);
    box-shadow:0 10px 22px -12px #0e7490, var(--shadow-in);
  }
  .side-foot{position:relative;z-index:1;margin-top:26px;padding-top:16px;border-top:1px dashed rgba(255,255,255,.2);color:#8fd3e4;font-size:.76rem;line-height:1.7;}

  /* 主区域 */
  .main{margin-left:var(--sidebar-w);padding:0 26px 40px;}
  .topbar{
    position:sticky;top:0;z-index:1030;
    margin:0 -26px 22px;padding:12px 26px;
    background:rgba(236,254,255,.86);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
    display:flex;align-items:center;justify-content:space-between;gap:14px;
    box-shadow:0 8px 24px -22px rgba(8,51,68,.9);
  }
  .topbar .tagline{font-size:.85rem;color:#0e7490;font-weight:600;}
  .mob-toggle{
    display:none;background:linear-gradient(145deg,#fff,#e0f7fc);
    border:1px solid var(--line);border-radius:12px;
    width:44px;height:42px;color:var(--main);font-size:1.1rem;
    box-shadow:var(--shadow-sm);
  }

  /* Hero 关键词标签云 */
  .hero{
    position:relative;
    background:linear-gradient(150deg,#ffffff 0%,#e0fbff 62%,#c8f3fa 100%);
    border:1px solid rgba(255,255,255,.9);
    border-radius:26px;
    padding:46px 34px 40px;
    box-shadow:var(--shadow-lg), var(--shadow-in);
    overflow:hidden;
    margin-bottom:34px;
  }
  .hero::after{
    content:"";position:absolute;right:-70px;top:-70px;width:260px;height:260px;
    border-radius:50%;
    background:radial-gradient(circle at 35% 35%,rgba(14,165,233,.45),rgba(8,145,178,.05) 68%);
    filter:blur(6px);
  }
  .hero-inner{position:relative;z-index:2;max-width:720px;}
  .kicker{
    display:inline-flex;align-items:center;gap:8px;
    font-size:.78rem;font-weight:800;letter-spacing:1.4px;text-transform:uppercase;
    color:#0e7490;background:#fff;border:1px solid var(--line);
    padding:6px 14px;border-radius:999px;box-shadow:var(--shadow-sm);
    margin-bottom:18px;
  }
  .hero h1{font-size:clamp(1.85rem,4.2vw,2.9rem);margin:0 0 16px;}
  .hero h1 em{font-style:normal;background:linear-gradient(120deg,var(--main),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent;}
  .hero p.lead{font-size:1.03rem;color:#0b4e63;line-height:1.9;margin-bottom:24px;max-width:600px;}
  .btn-solid{
    display:inline-flex;align-items:center;gap:9px;
    background:linear-gradient(145deg,var(--accent),var(--main));
    color:#fff;font-weight:800;font-size:.95rem;
    padding:13px 26px;border-radius:14px;border:1px solid rgba(255,255,255,.35);
    box-shadow:0 14px 26px -14px #0e7490, var(--shadow-in);
    transition:.22s ease;
  }
  .btn-solid:hover{color:#fff;transform:translateY(-2px);box-shadow:0 20px 32px -14px #0e7490, var(--shadow-in);}
  .btn-ghost{
    display:inline-flex;align-items:center;gap:9px;
    background:linear-gradient(145deg,#fff,#eafcff);
    color:var(--main);font-weight:800;font-size:.95rem;
    padding:13px 24px;border-radius:14px;
    border:1px solid var(--line);box-shadow:var(--shadow-sm), var(--shadow-in);
    transition:.22s ease;
  }
  .btn-ghost:hover{transform:translateY(-2px);color:var(--accent);}
  .cloud{
    display:flex;flex-wrap:wrap;gap:9px;margin-top:30px;position:relative;z-index:2;
  }
  .cloud span{
    font-size:.8rem;font-weight:700;color:#0e7490;
    background:rgba(255,255,255,.86);
    border:1px solid var(--line);
    padding:6px 13px;border-radius:999px;
    box-shadow:0 5px 12px -8px rgba(8,51,68,.6);
    animation:floatTag 5.5s ease-in-out infinite;
  }
  .cloud span:nth-child(2n){animation-delay:.7s;}
  .cloud span:nth-child(3n){animation-delay:1.4s;}
  .cloud span:nth-child(5n){animation-delay:2.1s;color:#0891b2;background:linear-gradient(145deg,#fff,#d7f7ff);}
  @keyframes floatTag{0%,100%{transform:translateY(0);}50%{transform:translateY(-5px);}}

  /* 区块通用 */
  section{scroll-margin-top:86px;margin-bottom:44px;}
  .sec-head{margin-bottom:22px;}
  .sec-head h2{font-size:clamp(1.35rem,2.6vw,1.75rem);margin:0 0 8px;display:flex;align-items:center;gap:11px;}
  .sec-head h2 i{
    font-size:.95rem;color:var(--main);
    width:40px;height:40px;border-radius:13px;
    display:inline-flex;align-items:center;justify-content:center;
    background:linear-gradient(145deg,#fff,#dcf7fd);
    border:1px solid var(--line);
    box-shadow:var(--shadow-sm), var(--shadow-in);
    flex:0 0 auto;
  }
  .sec-head p{margin:0;color:#0b5266;font-size:.94rem;max-width:660px;}

  /* 数据统计 */
  .stats{
    display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;
  }
  .stat{
    background:linear-gradient(160deg,#ffffff,#e6fbff);
    border:1px solid rgba(255,255,255,.9);
    border-radius:18px;padding:22px 18px;
    box-shadow:var(--shadow-lg), var(--shadow-in);
    position:relative;overflow:hidden;
    transition:.25s ease;
  }
  .stat:hover{transform:translateY(-4px);}
  .stat::before{
    content:"";position:absolute;top:0;left:0;right:0;height:4px;
    background:linear-gradient(90deg,var(--main),var(--accent));
  }
  .stat .num{font-size:1.9rem;color:var(--main);line-height:1.2;}
  .stat .num small{font-size:.9rem;font-weight:700;color:#0e7490;margin-left:2px;}
  .stat .lbl{font-size:.83rem;color:#0b5266;font-weight:600;margin-top:4px;}

  /* 步骤条 */
  .steps{position:relative;padding-left:38px;}
  .steps::before{
    content:"";position:absolute;left:15px;top:8px;bottom:8px;width:3px;
    border-radius:3px;
    background:linear-gradient(180deg,var(--accent),rgba(8,145,178,.15));
  }
  .step{
    position:relative;background:linear-gradient(150deg,#fff,#eefcff);
    border:1px solid rgba(255,255,255,.9);
    border-radius:16px;padding:18px 22px;margin-bottom:16px;
    box-shadow:var(--shadow-sm), var(--shadow-in);
    transition:.25s ease;
  }
  .step:hover{transform:translateX(4px);box-shadow:var(--shadow-lg), var(--shadow-in);}
  .step::before{
    content:attr(data-step);
    position:absolute;left:-38px;top:18px;
    width:33px;height:33px;border-radius:11px;
    display:flex;align-items:center;justify-content:center;
    font-family:Consolas,monospace;font-weight:800;font-size:.9rem;color:#fff;
    background:linear-gradient(145deg,var(--accent),var(--main));
    box-shadow:0 8px 16px -8px #0e7490, var(--shadow-in);
  }
  .step h3{font-size:1.02rem;margin:0 0 5px;}
  .step p{margin:0;font-size:.92rem;color:#0b5266;}

  /* 特色卡片网格 */
  .feat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(252px,1fr));gap:18px;}
  .feat{
    background:linear-gradient(160deg,#ffffff,#e9fcff);
    border:1px solid rgba(255,255,255,.9);
    border-radius:20px;padding:24px 22px;
    box-shadow:var(--shadow-lg), var(--shadow-in);
    transition:.28s ease;
    position:relative;overflow:hidden;
  }
  .feat:hover{transform:translateY(-6px);}
  .feat .ico{
    width:48px;height:48px;border-radius:15px;
    display:flex;align-items:center;justify-content:center;
    background:linear-gradient(145deg,#d9f8ff,#ffffff);
    border:1px solid var(--line);
    color:var(--main);font-size:1.1rem;margin-bottom:15px;
    box-shadow:var(--shadow-sm), inset 0 1px 0 #fff;
  }
  .feat h3{font-size:1.04rem;margin:0 0 7px;}
  .feat p{margin:0;font-size:.9rem;color:#0b5266;}

  /* 瀑布流卡片 */
  .masonry{columns:3;column-gap:18px;}
  @media(max-width:1100px){.masonry{columns:2;}}
  @media(max-width:620px){.masonry{columns:1;}}
  .poster-card{
    break-inside:avoid;
    background:linear-gradient(160deg,#ffffff,#eafcff);
    border:1px solid rgba(255,255,255,.9);
    border-radius:20px;overflow:hidden;
    margin-bottom:18px;
    box-shadow:var(--shadow-lg), var(--shadow-in);
    transition:.28s ease;
    opacity:0;transform:translateY(22px);
  }
  .poster-card.in{opacity:1;transform:none;transition:opacity .7s ease,transform .7s cubic-bezier(.22,.9,.28,1),box-shadow .28s ease;}
  .poster-card:hover{box-shadow:0 26px 46px -18px rgba(8,51,68,.5), var(--shadow-in);}
  .thumb{
    position:relative;display:block;overflow:hidden;
    background:linear-gradient(135deg,#c9f2fb,#e7fcff 55%,#a5e6f5);
    aspect-ratio:16/10;
  }
  .thumb img{
    width:100%;height:100%;object-fit:cover;display:block;
    opacity:0;transition:opacity .6s ease,transform .5s ease;
  }
  .thumb img.loaded{opacity:1;}
  .poster-card:hover .thumb img{transform:scale(1.06);}
  .play{
    position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
    opacity:0;transition:opacity .28s ease;
    background:linear-gradient(180deg,rgba(8,51,68,.05),rgba(8,51,68,.42));
  }
  .play i{
    width:58px;height:58px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    color:#fff;font-size:1.15rem;
    background:linear-gradient(145deg,var(--accent),var(--main));
    border:2px solid rgba(255,255,255,.75);
    box-shadow:0 12px 26px -10px rgba(8,51,68,.9), var(--shadow-in);
    transform:scale(.85);transition:transform .28s ease;
  }
  .poster-card:hover .play{opacity:1;}
  .poster-card:hover .play i{transform:scale(1);}
  .badge-cat{
    position:absolute;top:11px;left:11px;z-index:3;
    font-size:.7rem;font-weight:800;letter-spacing:.4px;
    color:#083344;background:rgba(255,255,255,.92);
    border:1px solid rgba(255,255,255,.9);
    padding:3px 10px;border-radius:999px;
    box-shadow:0 6px 14px -8px rgba(8,51,68,.8);
  }
  .card-body{padding:16px 18px 18px;}
  .card-body h3{font-size:1rem;margin:0 0 7px;line-height:1.5;}
  .card-body p{margin:0 0 12px;font-size:.87rem;color:#0b5266;}
  .card-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:.74rem;color:#0e7490;font-weight:700;border-top:1px dashed var(--line);padding-top:11px;}
  .card-meta .mono{font-size:.78rem;color:var(--main);}

  /* FAQ */
  .faq-item{
    background:linear-gradient(150deg,#ffffff,#eefcff);
    border:1px solid rgba(255,255,255,.9);
    border-radius:16px;margin-bottom:12px;
    box-shadow:var(--shadow-sm), var(--shadow-in);
    overflow:hidden;
  }
  .faq-q{
    width:100%;text-align:left;background:none;border:none;
    padding:17px 22px;font-weight:800;font-size:.98rem;color:var(--text);
    display:flex;align-items:center;justify-content:space-between;gap:14px;
    cursor:pointer;transition:.2s;
  }
  .faq-q:hover{color:var(--main);}
  .faq-q i{color:var(--main);font-size:.85rem;transition:transform .28s ease;flex:0 0 auto;}
  .faq-item.open .faq-q i{transform:rotate(180deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .34s ease;}
  .faq-a p{margin:0;padding:0 22px 18px;font-size:.92rem;color:#0b5266;}

  /* CTA */
  .cta{
    position:relative;overflow:hidden;
    background:linear-gradient(140deg,#0b5f76,#083344 72%);
    border-radius:24px;padding:44px 36px;
    color:#e6fbff;
    box-shadow:0 26px 50px -22px rgba(8,51,68,.9), inset 0 1px 0 rgba(255,255,255,.22);
  }
  .cta::after{
    content:"";position:absolute;right:-80px;bottom:-90px;width:280px;height:280px;
    border-radius:50%;background:radial-gradient(circle at 40% 40%,rgba(14,165,233,.55),transparent 70%);
  }
  .cta h2{color:#fff;font-size:clamp(1.35rem,2.8vw,1.85rem);margin:0 0 12px;position:relative;z-index:2;}
  .cta p{position:relative;z-index:2;max-width:580px;color:#b9ecf7;margin-bottom:24px;font-size:.96rem;}
  .cta .btn-solid{position:relative;z-index:2;}
  .cta .btn-ghost{position:relative;z-index:2;background:rgba(255,255,255,.1);color:#e6fbff;border-color:rgba(255,255,255,.32);box-shadow:none;}
  .cta .btn-ghost:hover{color:#fff;}

  /* 友链 & 页脚 */
  .friendlinks{
    background:linear-gradient(150deg,#ffffff,#eafcff);
    border:1px solid rgba(255,255,255,.9);
    border-radius:18px;padding:22px 24px;
    box-shadow:var(--shadow-sm), var(--shadow-in);
    margin-bottom:26px;
  }
  .friendlinks h3{font-size:1rem;margin:0 0 10px;display:flex;align-items:center;gap:9px;}
  .friendlinks h3 i{color:var(--main);font-size:.85rem;}
  .friendlinks .fl-line{font-size:.9rem;color:#0b5266;line-height:1.9;word-break:break-word;}
  footer{
    border-top:1px solid var(--line);
    padding-top:26px;
    display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;
    font-size:.85rem;color:#0b5266;
  }
  footer .fnav{display:flex;flex-wrap:wrap;gap:16px;}
  footer .fnav a{font-weight:700;color:#0e7490;font-size:.85rem;}

  /* 移动端 */
  @media(max-width:991px){
    .side{transform:translateX(-100%);transition:transform .3s ease;}
    .side.open{transform:none;}
    .main{margin-left:0;padding:0 16px 34px;}
    .topbar{margin:0 -16px 18px;padding:11px 16px;}
    .mob-toggle{display:inline-flex;align-items:center;justify-content:center;}
    .hero{padding:32px 20px 28px;border-radius:20px;}
    .cta{padding:30px 22px;}
    .masonry{columns:2;}
  }
  @media(max-width:575px){
    .masonry{columns:1;}
    .stats{grid-template-columns:1fr 1fr;}
    .step{padding:16px 16px;}
    .steps{padding-left:32px;}
    .step::before{left:-32px;width:28px;height:28px;font-size:.8rem;}
  }
  .scrim{display:none;position:fixed;inset:0;background:rgba(8,51,68,.45);z-index:1035;}
  .scrim.show{display:block;}

/* --- 子页面追加 --- */
/* 本页专属少量补充样式，全部基于站点变量 */
.about-lead {
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-lg);
  padding:30px 28px;
}
.about-lead p {margin:0 0 14px;line-height:1.85;font-size:15.5px;color:var(--text);}
.about-lead p:last-child {margin-bottom:0;}
.principle-grid {
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(230px,1fr));
  gap:18px;
  margin-top:22px;
}
.principle {
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px 20px;
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease, box-shadow .22s ease;
}
.principle:hover {transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.principle .p-ico {
  width:42px;height:42px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--main),var(--accent));
  color:#fff;font-size:17px;margin-bottom:14px;
  box-shadow:var(--shadow-sm);
}
.principle h3 {font-size:16px;font-weight:700;margin:0 0 8px;color:var(--text);}
.principle p {margin:0;font-size:14px;line-height:1.75;color:var(--text);opacity:.82;}
.flow-list {
  counter-reset:flow;
  list-style:none;
  padding:0;
  margin:22px 0 0;
  display:grid;
  gap:14px;
}
.flow-list li {
  counter-increment:flow;
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-left:4px solid var(--main);
  border-radius:14px;
  padding:18px 20px 18px 62px;
  box-shadow:var(--shadow-sm);
}
.flow-list li::before {
  content:counter(flow,decimal-leading-zero);
  position:absolute;left:18px;top:16px;
  font-family:'Inter',monospace;
  font-size:19px;font-weight:800;
  color:var(--main);
  opacity:.55;
  letter-spacing:-.5px;
}
.flow-list h3 {font-size:15.5px;font-weight:700;margin:0 0 6px;color:var(--text);}
.flow-list p {margin:0;font-size:14px;line-height:1.75;color:var(--text);opacity:.82;}
.boundary-box {
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 26px 10px;
  box-shadow:var(--shadow-sm);
  margin-top:22px;
}
.boundary-box .b-row {
  display:flex;gap:14px;
  padding:14px 0;
  border-bottom:1px dashed var(--line);
}
.boundary-box .b-row:last-child {border-bottom:0;}
.boundary-box .b-row i {color:var(--main);font-size:16px;margin-top:3px;flex:none;}
.boundary-box .b-row div {font-size:14.5px;line-height:1.8;color:var(--text);}
.boundary-box .b-row strong {font-weight:700;}
.about-cta {
  margin-top:34px;
  background:linear-gradient(135deg,var(--main),var(--accent));
  border-radius:var(--radius);
  padding:34px 30px;
  color:#fff;
  box-shadow:var(--shadow-lg);
  display:flex;flex-wrap:wrap;gap:18px;
  align-items:center;justify-content:space-between;
}
.about-cta h2 {margin:0 0 6px;font-size:20px;font-weight:800;color:#fff;}
.about-cta p {margin:0;font-size:14.5px;opacity:.92;line-height:1.7;max-width:560px;}
.about-cta .cta-btns {display:flex;gap:12px;flex-wrap:wrap;}
.about-cta .cta-btns a {
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 22px;border-radius:999px;
  font-size:14px;font-weight:600;text-decoration:none;
  transition:transform .2s ease, background .2s ease;
}
.about-cta .cta-btns .c-solid {background:#fff;color:var(--main);}
.about-cta .cta-btns .c-solid:hover {transform:translateY(-2px);}
.about-cta .cta-btns .c-ghost {background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.5);}
.about-cta .cta-btns .c-ghost:hover {background:rgba(255,255,255,.28);transform:translateY(-2px);}
.about-quote {
  border-left:4px solid var(--accent);
  background:rgba(8,145,178,.06);
  border-radius:0 14px 14px 0;
  padding:16px 20px;
  margin:22px 0 0;
  font-size:14.5px;
  line-height:1.8;
  color:var(--text);
}
.about-quote strong {color:var(--main);}
.about-lead {padding:22px 18px;}
.about-cta {padding:26px 20px;}
.flow-list li {padding:16px 16px 16px 54px;}

/* --- 子页面追加 --- */
.submit-hero h1 { line-height: 1.25; }
.submit-hero h1 em { font-style: normal; color: var(--main); }
.rule-list { list-style: none; padding: 0; margin: 0; }
.rule-list li { position: relative; padding: 10px 0 10px 34px; border-bottom: 1px dashed var(--line); }
.rule-list li:last-child { border-bottom: 0; }
.rule-list li i { position: absolute; left: 0; top: 12px; color: var(--main); }
.form-shell {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 28px 26px;
  }
.form-row { margin-bottom: 18px; }
.form-row label { display: block; font-weight: 600; font-size: .92rem; margin-bottom: 7px; color: var(--text); }
.form-row label .opt { font-weight: 400; color: rgba(8,51,68,.5); font-size: .82rem; }
.field {
    width: 100%;
    background: #f7feff;
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 12px 14px;
    color: var(--text);
    font-family: inherit;
    font-size: .95rem;
    transition: border-color .2s, box-shadow .2s;
  }
.field:focus {
    outline: none;
    border-color: var(--main);
    box-shadow: 0 0 0 3px rgba(8,145,178,.14);
    background: #fff;
  }
.field::placeholder { color: rgba(8,51,68,.38); }
textarea.field { min-height: 170px; resize: vertical; line-height: 1.7; }
select.field { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--main) 50%), linear-gradient(135deg, var(--main) 50%, transparent 50%); background-position: calc(100% - 20px) 50%, calc(100% - 14px) 50%; background-size: 6px 6px, 6px 6px; background-repeat: no-repeat; }
.radio-group { display: flex; flex-wrap: wrap; gap: 12px; }
.radio-pill {
    display: inline-flex; align-items: center; gap: 8px;
    border: 1px solid var(--line); border-radius: 999px;
    padding: 9px 18px; font-size: .9rem; cursor: pointer;
    background: #f7feff; transition: all .2s;
  }
.radio-pill input { accent-color: var(--main); margin: 0; }
.radio-pill:hover { border-color: var(--main); }
.submit-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 6px; }
.submit-actions .hint { font-size: .82rem; color: rgba(8,51,68,.55); }
.notice-box {
    background: linear-gradient(135deg, rgba(8,145,178,.08), rgba(14,165,233,.05));
    border: 1px dashed var(--line);
    border-radius: var(--radius);
    padding: 20px 22px;
    margin-top: 22px;
  }
.notice-box h3 { font-size: 1rem; margin: 0 0 10px; display: flex; align-items: center; gap: 8px; }
.notice-box h3 i { color: var(--main); }
.notice-box p { margin: 0; font-size: .9rem; line-height: 1.8; color: rgba(8,51,68,.78); }
.check-line { display: flex; align-items: flex-start; gap: 9px; font-size: .88rem; line-height: 1.6; color: rgba(8,51,68,.75); }
.check-line input { margin-top: 3px; accent-color: var(--main); }
.check-line a { color: var(--main); font-weight: 600; text-decoration: none; }
.check-line a:hover { text-decoration: underline; }
.form-shell { padding: 20px 16px; }
.radio-pill { flex: 1 1 auto; justify-content: center; }

/* --- 子页面追加 --- */
.legal-wrap {max-width:900px;margin:0 auto}
.legal-card {background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:34px 32px;margin-bottom:22px}
.legal-card h2 {font-size:1.28rem;font-weight:800;color:var(--text);margin:0 0 14px;display:flex;align-items:center;gap:10px;letter-spacing:.2px}
.legal-card h2 i {color:var(--main);font-size:1.05rem}
.legal-card h3 {font-size:1.02rem;font-weight:700;color:var(--text);margin:20px 0 8px}
.legal-card p,.legal-card li {color:var(--text);opacity:.88;font-size:.95rem;line-height:1.85;margin-bottom:10px}
.legal-card ul {padding-left:1.25rem;margin-bottom:10px}
.legal-card li::marker {color:var(--main)}
.legal-note {background:rgba(8,145,178,.07);border-left:4px solid var(--main);border-radius:10px;padding:14px 18px;margin:16px 0;font-size:.92rem;color:var(--text)}
.legal-meta {display:flex;flex-wrap:wrap;gap:10px 22px;font-size:.85rem;color:var(--text);opacity:.7;margin-top:6px}
.legal-toc {display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.legal-toc a {display:inline-flex;align-items:center;gap:7px;padding:8px 15px;border-radius:999px;background:rgba(8,145,178,.08);border:1px solid var(--line);color:var(--main);font-size:.86rem;font-weight:600;text-decoration:none;transition:.2s}
.legal-toc a:hover {background:var(--main);color:#fff;box-shadow:var(--shadow-sm)}
.legal-card {padding:24px 18px}
.legal-card h2 {font-size:1.12rem}

/* --- 子页面追加 --- */
.policy-hero {padding:52px 0 8px}
.policy-wrap {max-width:900px}
.policy-card {background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:26px 26px 22px;margin-bottom:18px}
.policy-card h2 {font-size:1.16rem;font-weight:800;color:var(--text);margin:0 0 12px;display:flex;align-items:center;gap:10px}
.policy-card h2 .num {flex:0 0 auto;width:30px;height:30px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--main),var(--accent));color:#fff;font-size:.85rem;font-weight:800;font-family:'Inter',sans-serif}
.policy-card p {color:var(--text);opacity:.86;line-height:1.85;font-size:.95rem;margin:0 0 12px}
.policy-card p:last-child {margin-bottom:0}
.policy-card ul {margin:0 0 12px;padding-left:1.15rem;color:var(--text);opacity:.86;line-height:1.9;font-size:.95rem}
.policy-card li {margin-bottom:6px}
.policy-card strong {color:var(--main)}
.policy-toc {background:linear-gradient(135deg,rgba(8,145,178,.08),rgba(14,165,233,.05));border:1px dashed var(--line);border-radius:var(--radius);padding:20px 22px;margin-bottom:22px}
.policy-toc h3 {font-size:.98rem;font-weight:800;margin:0 0 12px;color:var(--text)}
.policy-toc ol {margin:0;padding-left:1.2rem;line-height:2;font-size:.92rem}
.policy-toc a {color:var(--main);text-decoration:none;font-weight:600}
.policy-toc a:hover {text-decoration:underline}
.policy-meta {font-size:.82rem;color:var(--text);opacity:.6;margin-top:6px}
.policy-note {background:rgba(14,165,233,.07);border-left:3px solid var(--accent);border-radius:10px;padding:12px 16px;font-size:.9rem;line-height:1.8;color:var(--text);margin:10px 0 0}
.policy-card {padding:20px 18px}
.policy-hero {padding:34px 0 4px}
.policy-card h2 {font-size:1.04rem}