*{ box-sizing: border-box; }
  html{ scroll-behavior: smooth; scroll-padding-top: 88px; }
  body{
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
    color: #0b1220;
    font-size: 16px;
    line-height: 1.7;
    background-color: #f3f6ff;
    background-image:
      radial-gradient(900px 520px at 8% -6%, #dfe8ff 0%, rgba(223,232,255,0) 62%),
      radial-gradient(760px 460px at 96% 4%, #fff1cf 0%, rgba(255,241,207,0) 58%),
      radial-gradient(900px 700px at 46% 116%, #e3f7f1 0%, rgba(227,247,241,0) 60%);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
  }
  a{ color: inherit; text-decoration: none; }
  img{ display: block; max-width: 100%; }
  .container{
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 20px;
  }
  .section{ padding: 68px 0; }

  /* ===== 顶部导航 ===== */
  .site-header{
    position: sticky;
    top: 0;
    z-index: 60;
    background: rgba(255,255,255,.93);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid #e2e9f8;
  }
  .nav-bar{
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 70px;
  }
  .brand{
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 17px;
    letter-spacing: -.3px;
    white-space: nowrap;
  }
  .ai-page-logo{ max-height: 42px; width: auto; }
  .nav-links{
    display: flex;
    align-items: center;
    gap: 0;
    list-style: none;
    margin: 0;
    padding: 0;
  }
  .nav-links a{
    display: block;
    padding: 8px 11px;
    font-size: 14.5px;
    font-weight: 600;
    color: #31405c;
    border-radius: 10px;
    transition: color .2s ease, background .2s ease;
  }
  .nav-links a:hover{ color: #1f4bff; background: #eef3ff; }
  .ai-page-home-link{ color: #1f4bff !important; }
  .nav-actions{ display: flex; align-items: center; gap: 10px; }
  .nav-toggle{
    display: none;
    width: 44px;
    height: 40px;
    border: 1px solid #d8e1f5;
    background: #fff;
    border-radius: 12px;
    cursor: pointer;
    padding: 0;
  }
  .nav-toggle span{
    display: block;
    width: 20px;
    height: 2px;
    margin: 5px auto;
    background: #0b1220;
    border-radius: 2px;
    transition: transform .25s ease, opacity .25s ease;
  }
  .nav-toggle.active span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
  .nav-toggle.active span:nth-child(2){ opacity: 0; }
  .nav-toggle.active span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

  /* ===== 按钮 ===== */
  .btn{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 26px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 800;
    border: 2px solid transparent;
    cursor: pointer;
    font-family: inherit;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
  }
  .btn-primary{
    background: #1f4bff;
    color: #fff;
    box-shadow: 0 10px 22px rgba(31,75,255,.28);
  }
  .btn-primary:hover{ transform: translateY(-2px); box-shadow: 0 16px 30px rgba(31,75,255,.36); }
  .btn-accent{
    background: #ff5a1f;
    color: #fff;
    box-shadow: 0 10px 22px rgba(255,90,31,.28);
  }
  .btn-accent:hover{ transform: translateY(-2px); box-shadow: 0 16px 30px rgba(255,90,31,.34); }
  .btn-ghost{
    background: #fff;
    color: #0b1220;
    border-color: #0b1220;
    box-shadow: 4px 4px 0 #0b1220;
  }
  .btn-ghost:hover{ transform: translate(-2px,-2px); box-shadow: 7px 7px 0 #0b1220; }
  .btn-sm{ padding: 9px 18px; font-size: 14px; }

  /* ===== Hero ===== */
  .hero{
    position: relative;
    overflow: hidden;
    padding: 64px 0 58px;
  }
  .hero::before{
    content: "";
    position: absolute;
    width: 560px;
    height: 560px;
    border-radius: 50%;
    top: -260px;
    right: -140px;
    background: radial-gradient(circle at 32% 32%, #cfdcff 0%, rgba(207,220,255,0) 68%);
  }
  .hero::after{
    content: "";
    position: absolute;
    width: 360px;
    height: 360px;
    border-radius: 50%;
    bottom: -200px;
    left: -120px;
    background: radial-gradient(circle at 50% 50%, #ffe4b2 0%, rgba(255,228,178,0) 68%);
  }
  .hero-inner{
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 920px;
  }
  .hero-badge{
    display: inline-flex;
    align-items: center;
    gap: 8px;
    align-self: flex-start;
    padding: 7px 16px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid #d8e1f5;
    font-size: 13px;
    font-weight: 700;
    color: #1f4bff;
    box-shadow: 0 6px 16px rgba(16,38,96,.06);
    animation: riseIn .55s ease both;
  }
  .hero-badge i{
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #ff5a1f;
    display: inline-block;
  }
  .hero h1{
    margin: 0;
    font-size: clamp(30px, 5vw, 52px);
    line-height: 1.18;
    letter-spacing: -1px;
    animation: riseIn .6s .06s ease both;
  }
  .hero h1 em{
    font-style: normal;
    color: #1f4bff;
  }
  .hero-lead{
    margin: 0;
    font-size: 17px;
    color: #3d4a66;
    max-width: 700px;
    animation: riseIn .6s .14s ease both;
  }
  .hero-actions{
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
    animation: riseIn .6s .22s ease both;
  }
  .hero-note{
    display: flex;
    flex-wrap: wrap;
    gap: 8px 20px;
    font-size: 13.5px;
    color: #576381;
    margin: 0;
    animation: riseIn .6s .3s ease both;
  }
  .hero-note span{ display: inline-flex; align-items: center; gap: 6px; }
  .hero-note span::before{
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #00c2a8;
  }
  .hero-stats{
    position: relative;
    z-index: 2;
    margin-top: 40px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }
  .stat{
    background: #fff;
    border: 1px solid #e2e9f8;
    border-radius: 16px;
    padding: 18px 18px 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    box-shadow: 0 10px 24px rgba(16,38,96,.06);
    transition: transform .25s ease, box-shadow .25s ease;
  }
  .stat:hover{ transform: translateY(-4px); box-shadow: 0 16px 32px rgba(16,38,96,.12); }
  .stat strong{
    font-size: 26px;
    line-height: 1.15;
    font-weight: 900;
    letter-spacing: -.5px;
    color: #1f4bff;
  }
  .stat:nth-child(2) strong{ color: #ff5a1f; }
  .stat:nth-child(3) strong{ color: #0b1220; }
  .stat:nth-child(4) strong{ color: #00a892; }
  .stat span{ font-size: 13.5px; color: #576381; }
  @keyframes riseIn{
    from{ opacity: 0; transform: translateY(22px); }
    to{ opacity: 1; transform: none; }
  }

  /* ===== 通用区块头 ===== */
  .sec-head{
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
    max-width: 820px;
  }
  .eyebrow{
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font-size: 12.5px;
    font-weight: 800;
    letter-spacing: .16em;
    color: #1f4bff;
  }
  .eyebrow::before{
    content: "";
    width: 24px;
    height: 6px;
    border-radius: 99px;
    background: linear-gradient(90deg, #ff5a1f, #ffcb2e);
  }
  .sec-head h2{
    margin: 0;
    font-size: clamp(24px, 3.2vw, 34px);
    line-height: 1.25;
    letter-spacing: -.6px;
  }
  .sec-head p{ margin: 0; color: #46536f; font-size: 15.5px; }

  /* ===== 卡片与网格 ===== */
  .grid{ display: grid; gap: 18px; }
  .g-2{ grid-template-columns: repeat(2, 1fr); }
  .g-3{ grid-template-columns: repeat(3, 1fr); }
  .g-4{ grid-template-columns: repeat(4, 1fr); }
  .card{
    background: #fff;
    border: 1px solid #e2e9f8;
    border-radius: 18px;
    padding: 22px;
    box-shadow: 0 8px 22px rgba(16,38,96,.05);
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  }
  .card:hover{
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(16,38,96,.12);
    border-color: #c9d8ff;
  }
  .card h3{ margin: 0; font-size: 17px; line-height: 1.45; }
  .card p{ margin: 0; font-size: 14.5px; color: #4b5875; line-height: 1.72; }
  .card-body{ display: flex; flex-direction: column; gap: 8px; }
  .num{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 32px;
    padding: 0 10px;
    border-radius: 11px;
    background: #ffcb2e;
    color: #0b1220;
    font-weight: 900;
    font-size: 14px;
    align-self: flex-start;
  }
  .feature-card{ border-left: 4px solid #1f4bff; }
  .feature-card:nth-child(2n){ border-left-color: #ff5a1f; }
  .feature-card:nth-child(3n){ border-left-color: #00c2a8; }
  .feature-card:nth-child(4n){ border-left-color: #ffcb2e; }

  /* ===== 图文组合 ===== */
  .figure{
    background: #fff;
    border: 1px solid #e2e9f8;
    border-radius: 20px;
    padding: 14px;
    box-shadow: 0 12px 30px rgba(16,38,96,.08);
    overflow: hidden;
  }
  .figure img{ width: 100%; height: auto; border-radius: 12px; }
  .figure figcaption{
    margin-top: 12px;
    font-size: 13.5px;
    color: #576381;
    text-align: center;
  }
  .split{
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 26px;
    align-items: start;
  }

  /* ===== 标签云 ===== */
  .tag-cloud{
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 26px;
  }
  .tag{
    padding: 6px 14px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid #dbe4f7;
    font-size: 13px;
    font-weight: 600;
    color: #3d4a66;
    transition: transform .2s ease, border-color .2s ease, color .2s ease, box-shadow .2s ease;
  }
  .tag:hover{
    transform: translateY(-2px);
    border-color: #1f4bff;
    color: #1f4bff;
    box-shadow: 0 8px 18px rgba(31,75,255,.14);
  }

  /* ===== 流程步骤 ===== */
  .steps{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
  .step-card{ position: relative; }
  .step-no{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 13px;
    background: #0b1220;
    color: #fff;
    font-weight: 900;
    font-size: 15px;
    margin-bottom: 4px;
  }
  .step-card:nth-child(2) .step-no{ background: #1f4bff; }
  .step-card:nth-child(3) .step-no{ background: #ff5a1f; }
  .step-card:nth-child(4) .step-no{ background: #00a892; }
  .step-card:nth-child(5) .step-no{ background: #d99b00; }
  .step-card:nth-child(6) .step-no{ background: #6b3df0; }

  /* ===== 案例 ===== */
  .case-card{ padding: 0; overflow: hidden; }
  .case-media{ background: #eef3ff; }
  .case-media img{ width: 100%; height: auto; }
  .case-body{ padding: 18px 20px 22px; display: flex; flex-direction: column; gap: 8px; }
  .case-body h3{ margin: 0; font-size: 17px; }
  .case-body p{ margin: 0; font-size: 14.5px; color: #4b5875; }

  /* ===== 表格 ===== */
  .table-wrap{
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border: 1px solid #e2e9f8;
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 10px 26px rgba(16,38,96,.07);
  }
  table{ width: 100%; border-collapse: collapse; min-width: 720px; font-size: 14.5px; }
  th{
    background: #eef3ff;
    color: #1b2a4a;
    text-align: left;
    padding: 14px 16px;
    font-weight: 800;
    white-space: nowrap;
  }
  td{
    padding: 14px 16px;
    border-top: 1px solid #eaf0fb;
    color: #3a4763;
  }
  td.best{ color: #1f4bff; font-weight: 800; }
  tbody tr:hover{ background: #f7faff; }

  /* ===== 评分 ===== */
  .rating-box{
    display: grid;
    grid-template-columns: 230px 1fr;
    gap: 26px;
    align-items: center;
    padding: 26px;
    border-radius: 22px;
    background: linear-gradient(120deg, #fff7e0, #eaf0ff);
    border: 1px solid #ffe1a8;
    margin-bottom: 24px;
  }
  .rating-score{
    font-size: 54px;
    font-weight: 900;
    line-height: 1;
    letter-spacing: -2px;
    color: #0b1220;
  }
  .rating-score small{ font-size: 18px; font-weight: 700; color: #576381; letter-spacing: 0; }
  .stars{ color: #ff9f1c; font-size: 20px; letter-spacing: 4px; line-height: 1.4; }
  .rating-text h3{ margin: 0 0 6px; font-size: 19px; }
  .rating-text p{ margin: 0; font-size: 14.5px; color: #46536f; }

  /* ===== 评论 ===== */
  .review-card{ display: flex; flex-direction: column; gap: 12px; }
  .review-card p{ font-size: 14.5px; color: #3a4763; }
  .review-user{ display: flex; align-items: center; gap: 10px; margin-top: 2px; }
  .avatar{
    width: 38px;
    height: 38px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 15px;
    color: #fff;
    background: #1f4bff;
    flex-shrink: 0;
  }
  .review-card:nth-child(2) .avatar{ background: #ff5a1f; }
  .review-card:nth-child(3) .avatar{ background: #00a892; }
  .review-card:nth-child(4) .avatar{ background: #6b3df0; }
  .review-card:nth-child(5) .avatar{ background: #d99b00; }
  .review-card:nth-child(6) .avatar{ background: #0b1220; }
  .review-user strong{ font-size: 14px; display: block; line-height: 1.4; }
  .review-user span{ font-size: 12.5px; color: #6b7899; }

  /* ===== 表单 ===== */
  .form-wrap{
    display: grid;
    grid-template-columns: .85fr 1.15fr;
    gap: 26px;
    align-items: start;
  }
  .form-panel{
    background: #fff;
    border: 1px solid #e2e9f8;
    border-radius: 22px;
    padding: 26px;
    box-shadow: 0 14px 34px rgba(16,38,96,.08);
  }
  .form-grid{ display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .field{ display: flex; flex-direction: column; gap: 8px; }
  .field.full{ grid-column: 1 / -1; }
  .field label{ font-size: 14px; font-weight: 700; color: #22304f; }
  .field input,
  .field select,
  .field textarea{
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid #d8e1f5;
    background: #f8faff;
    font-size: 15px;
    font-family: inherit;
    color: #0b1220;
    transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
  }
  .field textarea{ min-height: 112px; resize: vertical; }
  .field input:focus,
  .field select:focus,
  .field textarea:focus{
    outline: none;
    background: #fff;
    border-color: #1f4bff;
    box-shadow: 0 0 0 3px rgba(31,75,255,.15);
  }
  .form-actions{ display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-top: 4px; }
  .form-tip{ font-size: 13px; color: #6b7899; margin: 0; }

  /* ===== 列表型信息 ===== */
  .info-list{ list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
  .info-list li{
    display: flex;
    gap: 10px;
    align-items: flex-start;
    font-size: 14.5px;
    color: #3d4a66;
    line-height: 1.7;
  }
  .info-list li::before{
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #ff5a1f;
    flex-shrink: 0;
    margin-top: 9px;
  }

  /* ===== 渠道卡 ===== */
  .support-card{ display: flex; flex-direction: column; gap: 8px; align-items: flex-start; }
  .support-card .label{ font-size: 13px; color: #6b7899; font-weight: 700; letter-spacing: .05em; }
  .support-card .value{ font-size: 16px; font-weight: 800; color: #0b1220; word-break: break-all; }
  .qr-box{
    width: 140px;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid #e2e9f8;
    background: #fff;
  }
  .qr-box img{ width: 100%; height: auto; }

  /* ===== FAQ ===== */
  .faq-list{ display: flex; flex-direction: column; gap: 12px; }
  .faq-item{
    background: #fff;
    border: 1px solid #e2e9f8;
    border-radius: 16px;
    padding: 4px 20px;
    box-shadow: 0 6px 18px rgba(16,38,96,.045);
    transition: border-color .25s ease, box-shadow .25s ease;
  }
  .faq-item[open]{ border-color: #c9d8ff; box-shadow: 0 14px 30px rgba(16,38,96,.1); }
  .faq-item summary{
    list-style: none;
    cursor: pointer;
    padding: 16px 0;
    font-size: 15.5px;
    font-weight: 700;
    color: #0b1220;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
  }
  .faq-item summary::-webkit-details-marker{ display: none; }
  .faq-item summary::after{
    content: "+";
    font-size: 20px;
    font-weight: 700;
    color: #1f4bff;
    line-height: 1;
    transition: transform .25s ease;
    flex-shrink: 0;
  }
  .faq-item[open] summary::after{ content: "−"; transform: rotate(180deg); }
  .faq-item p{
    margin: 0 0 18px;
    font-size: 14.5px;
    color: #46536f;
    line-height: 1.75;
  }

  /* ===== 文章列表 ===== */
  .article-list{ display: flex; flex-direction: column; gap: 12px; }
  .article-item{
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 18px 22px;
    background: #fff;
    border: 1px solid #e2e9f8;
    border-radius: 16px;
    transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
  }
  .article-item:hover{
    transform: translateX(4px);
    border-color: #c9d8ff;
    box-shadow: 0 14px 30px rgba(16,38,96,.1);
  }
  .article-text{ display: flex; flex-direction: column; gap: 4px; }
  .article-text strong{ font-size: 15.5px; }
  .article-text span{ font-size: 13.5px; color: #576381; }
  .article-more{
    font-size: 13.5px;
    font-weight: 800;
    color: #1f4bff;
    white-space: nowrap;
  }

  /* ===== 链接组 ===== */
  .link-cloud{ display: flex; flex-wrap: wrap; gap: 10px; }
  .link-cloud a{
    padding: 8px 16px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid #dbe4f7;
    font-size: 13.5px;
    font-weight: 600;
    color: #3d4a66;
    transition: transform .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease;
  }
  .link-cloud a:hover{
    transform: translateY(-2px);
    color: #ff5a1f;
    border-color: #ffb69a;
    box-shadow: 0 8px 18px rgba(255,90,31,.14);
  }

  /* ===== CTA 条 ===== */
  .cta-band{
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 24px;
    align-items: center;
    padding: 30px 32px;
    border-radius: 24px;
    background: linear-gradient(120deg, #1f4bff, #5b2bff 55%, #ff5a1f);
    color: #fff;
    box-shadow: 0 22px 46px rgba(31,75,255,.28);
  }
  .cta-band h2{ margin: 0 0 6px; font-size: clamp(20px, 2.6vw, 26px); letter-spacing: -.4px; }
  .cta-band p{ margin: 0; font-size: 14.5px; color: #e6ecff; }
  .cta-band .btn-ghost{ border-color: #fff; box-shadow: 4px 4px 0 rgba(255,255,255,.5); }

  /* ===== 页脚 ===== */
  .site-footer{
    background: #0b1220;
    color: #cfd9ea;
    margin-top: 8px;
    padding: 46px 0 26px;
  }
  .footer-grid{
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 28px;
    align-items: start;
  }
  .footer-brand{ display: flex; flex-direction: column; gap: 12px; }
  .footer-brand strong{ font-size: 18px; color: #fff; letter-spacing: -.3px; }
  .footer-brand p{ margin: 0; font-size: 14px; color: #a9b6cd; line-height: 1.75; max-width: 380px; }
  .footer-col h3{
    margin: 0 0 12px;
    font-size: 14px;
    font-weight: 800;
    color: #fff;
    letter-spacing: .04em;
  }
  .footer-col ul{ list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 9px; }
  .footer-col li{ font-size: 14px; color: #a9b6cd; word-break: break-all; }
  .footer-col a{ color: #a9c0ff; transition: color .2s ease; }
  .footer-col a:hover{ color: #fff; }
  .footer-bottom{
    margin-top: 30px;
    padding-top: 18px;
    border-top: 1px solid rgba(255,255,255,.12);
    display: flex;
    flex-wrap: wrap;
    gap: 10px 20px;
    justify-content: space-between;
    font-size: 13px;
    color: #8d9bb5;
  }

  /* ===== 浮动按钮 ===== */
  .fab{
    position: fixed;
    right: 18px;
    bottom: 22px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 80;
  }
  .fab a,
  .fab button{
    width: 56px;
    height: 56px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 800;
    border: none;
    cursor: pointer;
    font-family: inherit;
    text-decoration: none;
    box-shadow: 0 12px 26px rgba(11,18,32,.2);
    transition: transform .2s ease, box-shadow .2s ease, opacity .2s ease;
  }
  .fab a{ background: #1f4bff; color: #fff; }
  .fab a:hover{ transform: translateY(-3px); box-shadow: 0 16px 32px rgba(31,75,255,.34); }
  .fab button{
    background: #fff;
    color: #0b1220;
    border: 1px solid #d8e1f5;
    opacity: 0;
    pointer-events: none;
  }
  .fab button.show{ opacity: 1; pointer-events: auto; }
  .fab button:hover{ transform: translateY(-3px); }

  /* ===== 滚动渐入 ===== */
  .reveal{
    opacity: 0;
    transform: translateY(18px);
    transition: opacity .65s ease, transform .65s ease;
  }
  .reveal.in{ opacity: 1; transform: none; }

  /* ===== 响应式 ===== */
  @media (max-width: 1080px){
    .nav-links,
    .nav-actions .btn{ display: none; }
    .nav-toggle{ display: block; }
    .site-header .nav-links.open{
      display: flex;
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      flex-direction: column;
      align-items: stretch;
      gap: 0;
      padding: 10px 20px 16px;
      background: #fff;
      border-bottom: 1px solid #e2e9f8;
      box-shadow: 0 18px 32px rgba(16,38,96,.12);
      max-height: calc(100vh - 70px);
      overflow-y: auto;
    }
    .site-header .nav-links.open a{ padding: 12px 8px; font-size: 15px; }
  }
  @media (max-width: 980px){
    .g-3, .g-4, .steps{ grid-template-columns: repeat(2, 1fr); }
    .hero-stats{ grid-template-columns: repeat(2, 1fr); }
    .split, .form-wrap, .rating-box{ grid-template-columns: 1fr; }
    .footer-grid{ grid-template-columns: 1fr 1fr; }
    .cta-band{ grid-template-columns: 1fr; }
    .section{ padding: 56px 0; }
  }
  @media (max-width: 640px){
    .g-2, .g-3, .g-4, .steps, .hero-stats, .form-grid{ grid-template-columns: 1fr; }
    .footer-grid{ grid-template-columns: 1fr; }
    .hero{ padding: 44px 0 46px; }
    .hero-lead{ font-size: 15.5px; }
    .hero-actions .btn{ width: 100%; }
    .rating-score{ font-size: 44px; }
    .article-item{ flex-direction: column; align-items: flex-start; gap: 8px; }
    .cta-band{ padding: 24px 20px; }
    .footer-bottom{ flex-direction: column; }
  }
  @media (prefers-reduced-motion: reduce){
    html{ scroll-behavior: auto; }
    .reveal{ opacity: 1; transform: none; transition: none; }
    .hero-badge, .hero h1, .hero-lead, .hero-actions, .hero-note{ animation: none; }
    *{ transition-duration: .01ms !important; }
  }

.reveal{ opacity: 1 !important; transform: none !important; }