/* 杭州智脑优学科技有限公司 · 官网样式 */
:root {
  --ink: #0b1a2b;
  --ink-2: #33475b;
  --muted: #6b7c90;
  --line: #e6ecf3;
  --bg: #ffffff;
  --bg-soft: #f5f8fc;
  --brand: #0e6ba8;
  --brand-dark: #0a4f7d;
  --brand-2: #12a594;
  --accent: #f2994a;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 10px 30px rgba(11, 26, 43, .07);
  --shadow-lg: 0 22px 60px rgba(11, 26, 43, .12);
  --maxw: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 72px;
}
.logo { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.logo-mark {
  width: 40px; height: 40px; border-radius: 12px;
  background: #ffffff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 14px rgba(14, 107, 168, .18), inset 0 0 0 1px rgba(14, 107, 168, .08);
}
.logo-mark img { width: 32px; height: 32px; display: block; object-fit: contain; }
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-text b { font-size: 16px; letter-spacing: .5px; }
.logo-text span { font-size: 11px; color: var(--muted); letter-spacing: 1.6px; }

.nav { display: flex; gap: 4px; }
.nav a {
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 15px;
  color: var(--ink-2);
  transition: .18s;
}
.nav a:hover { background: var(--bg-soft); color: var(--brand); }
.nav a.active { color: var(--brand); font-weight: 600; background: rgba(14, 107, 168, .08); }

.header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; margin-left: auto; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 42px; padding: 0 20px;
  border-radius: 999px; border: 1px solid transparent;
  font-size: 15px; font-weight: 500; cursor: pointer;
  transition: .2s; white-space: nowrap;
}
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 8px 20px rgba(14, 107, 168, .25); }
.btn-primary:hover { background: var(--brand-dark); transform: translateY(-1px); }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn-light { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .4); color: #fff; }
.btn-light:hover { background: rgba(255, 255, 255, .24); }
.btn-sm { height: 36px; padding: 0 16px; font-size: 14px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; }

.nav-toggle { display: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(150deg, #0b1a2b 0%, #113a5c 45%, #0e6ba8 100%);
  color: #fff;
  padding: 96px 0 0;
}
.hero::before,
.hero::after {
  content: ""; position: absolute; border-radius: 50%; filter: blur(0px);
  pointer-events: none;
}
.hero::before {
  width: 620px; height: 620px; right: -180px; top: -220px;
  background: radial-gradient(circle, rgba(18, 165, 148, .38), transparent 66%);
}
.hero::after {
  width: 520px; height: 520px; left: -160px; bottom: -280px;
  background: radial-gradient(circle, rgba(242, 153, 74, .22), transparent 68%);
}
.hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.hero h1 { font-size: 46px; line-height: 1.25; margin: 0 0 20px; font-weight: 700; letter-spacing: -.5px; }
.hero h1 em { font-style: normal; color: #6fe3d2; }
.hero p.lede { font-size: 17px; color: rgba(255, 255, 255, .82); margin: 0 0 32px; max-width: 520px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-note { margin-top: 22px; font-size: 13px; color: rgba(255, 255, 255, .6); }
.hero-art { position: relative; display: flex; align-items: center; justify-content: center; min-height: 420px; }
.hero-glow {
  position: absolute; width: 540px; height: 540px; border-radius: 50%;
  background: radial-gradient(circle, rgba(150, 116, 255, .48) 0%, rgba(59, 118, 235, .26) 44%, transparent 70%);
  filter: blur(8px);
}
.hero-brain {
  position: relative; width: min(420px, 82%); height: auto;
  filter: drop-shadow(0 30px 70px rgba(3, 10, 26, .55));
  animation: heroFloat 7s ease-in-out infinite;
}
@keyframes heroFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}
@media (prefers-reduced-motion: reduce) { .hero-brain { animation: none; } }
.hero-chip {
  position: absolute; display: flex; align-items: center; gap: 10px;
  background: rgba(255, 255, 255, .13); border: 1px solid rgba(255, 255, 255, .38);
  border-radius: 18px; padding: 12px 16px; backdrop-filter: blur(6px);
}
.chip-a { top: 30px; right: 4px; }
.chip-b { bottom: 38px; left: -6px; }
.dot { width: 14px; height: 14px; border-radius: 50%; flex-shrink: 0; }
.dot-teal { background: #6fe3d2; }
.dot-orange { background: #f2994a; }
.chip-lines { display: flex; flex-direction: column; gap: 6px; }
.chip-lines i { display: block; height: 8px; border-radius: 4px; background: rgba(255, 255, 255, .65); }
.chip-lines i + i { height: 7px; background: rgba(255, 255, 255, .35); }

.hero-wave { position: relative; z-index: 2; margin-top: 56px; }
.hero-wave svg { display: block; width: 100%; height: 60px; }

/* ---------- Page hero ---------- */
.page-hero {
  background: linear-gradient(150deg, #0b1a2b 0%, #113a5c 55%, #0e6ba8 100%);
  color: #fff; padding: 76px 0 84px;
}
.page-hero h1 { font-size: 38px; margin: 0 0 14px; font-weight: 700; letter-spacing: -.4px; }
.page-hero p { margin: 0; color: rgba(255, 255, 255, .8); max-width: 660px; font-size: 16px; }

.section[id] { scroll-margin-top: 86px; }
.card-foot { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-top: 18px; }
.tool-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.tool-meta span {
  font-size: 12.5px; line-height: 1.5; color: var(--ink-2);
  background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: 999px; padding: 4px 11px;
}
.tool-note { margin-top: 12px; font-size: 13px; color: var(--muted); }

/* ---------- Stats ---------- */
.stats { padding: 56px 0 8px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow);
}
.stat b { display: block; font-size: 30px; color: var(--brand); line-height: 1.2; }
.stat span { font-size: 14px; color: var(--muted); }

/* ---------- Section ---------- */
.section { padding: 88px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { max-width: 720px; margin-bottom: 44px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  display: inline-block; font-size: 13px; letter-spacing: 2px; color: var(--brand);
  background: rgba(14, 107, 168, .08); padding: 5px 12px; border-radius: 999px; margin-bottom: 16px;
}
.section-head h2 { font-size: 34px; line-height: 1.35; margin: 0 0 14px; font-weight: 700; letter-spacing: -.4px; }
.section-head p { color: var(--muted); font-size: 16px; margin: 0; }

/* ---------- Cards ---------- */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card-grid.two { grid-template-columns: repeat(2, 1fr); }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px; transition: .22s; display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(14, 107, 168, .3); }
.card-icon {
  width: 50px; height: 50px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(14, 107, 168, .12), rgba(18, 165, 148, .16));
  margin-bottom: 18px;
}
.card-icon svg { width: 26px; height: 26px; }
.card h3 { font-size: 19px; margin: 0 0 10px; font-weight: 650; }
.card p { color: var(--muted); font-size: 15px; margin: 0; }
.card .tag {
  align-self: flex-start; font-size: 12px; color: var(--brand); background: rgba(14, 107, 168, .08);
  padding: 3px 10px; border-radius: 999px; margin-bottom: 14px;
}
.card ul { margin: 16px 0 0; padding: 0; list-style: none; }
.card ul li { font-size: 14px; color: var(--ink-2); padding-left: 20px; position: relative; margin-bottom: 7px; }
.card ul li::before {
  content: ""; position: absolute; left: 4px; top: 10px; width: 6px; height: 6px;
  border-radius: 50%; background: var(--brand-2);
}

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.step { position: relative; padding: 28px 24px; }
.step .num {
  width: 40px; height: 40px; border-radius: 50%; background: var(--ink); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 700; margin-bottom: 16px;
}
.step h4 { margin: 0 0 8px; font-size: 17px; }
.step p { margin: 0; color: var(--muted); font-size: 14px; }
.step:not(:last-child)::after {
  content: ""; position: absolute; right: 0; top: 48px; width: 1px; height: 60px;
  background: linear-gradient(var(--line), transparent);
}

/* ---------- Quote ---------- */
.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.quote {
  background: #fff; border-radius: var(--radius); padding: 28px; border: 1px solid var(--line);
}
.quote p { margin: 0 0 18px; font-size: 15px; color: var(--ink-2); }
.quote .who { font-size: 13px; color: var(--muted); }
.quote .who b { display: block; color: var(--ink); font-size: 14px; }

/* ---------- CTA ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--brand-dark), var(--brand) 55%, var(--brand-2));
  border-radius: 28px; padding: 56px; color: #fff; text-align: center;
}
.cta-band h2 { font-size: 32px; margin: 0 0 14px; font-weight: 700; }
.cta-band p { margin: 0 0 30px; color: rgba(255, 255, 255, .85); }
.cta-band .hero-actions { justify-content: center; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: rgba(255, 255, 255, .7); padding: 64px 0 0; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-grid h5 { color: #fff; font-size: 15px; margin: 0 0 16px; }
.footer-grid a { display: block; font-size: 14px; padding: 5px 0; color: rgba(255, 255, 255, .65); }
.footer-grid a:hover { color: #6fe3d2; }
.footer-about p { font-size: 14px; margin: 14px 0 0; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .12); padding: 22px 0 34px;
  font-size: 13px; display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
}
.disclaimer {
  background: rgba(255, 255, 255, .05); border-left: 3px solid var(--accent);
  padding: 16px 20px; border-radius: 0 10px 10px 0; font-size: 13px; margin-bottom: 24px;
  color: rgba(255, 255, 255, .72);
}

/* ---------- Forms ---------- */
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 34px; box-shadow: var(--shadow); }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.field label .req { color: var(--accent); }
.input, .select, textarea.input {
  width: 100%; height: 46px; padding: 0 14px; font-size: 15px; font-family: inherit;
  border: 1px solid var(--line); border-radius: var(--radius-sm); background: #fbfcfe;
  color: var(--ink); outline: none; transition: .18s;
}
textarea.input { height: auto; padding: 12px 14px; resize: vertical; min-height: 110px; }
.input:focus, .select:focus { border-color: var(--brand); background: #fff; box-shadow: 0 0 0 3px rgba(14, 107, 168, .12); }
.field-error { color: #d9534f; font-size: 13px; margin-top: 6px; min-height: 18px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.notice { padding: 12px 16px; border-radius: var(--radius-sm); font-size: 14px; margin-bottom: 18px; }
.notice-error { background: #fdf0ef; color: #b4433c; border: 1px solid #f6d6d3; }
.notice-ok { background: #eefaf5; color: #0f7a63; border: 1px solid #c8ecdf; }
.notice-info { background: #eff5fb; color: #0e6ba8; border: 1px solid #d5e6f5; }

/* ---------- Auth ---------- */
.auth-wrap { min-height: calc(100vh - 72px); display: flex; align-items: center; padding: 60px 0; background: var(--bg-soft); }
.auth-card { width: 100%; max-width: 440px; margin: 0 auto; }
.tabs { display: flex; gap: 6px; background: #eef2f7; padding: 4px; border-radius: 999px; margin-bottom: 24px; }
.tabs button {
  flex: 1; height: 38px; border: none; background: transparent; border-radius: 999px;
  font-size: 14px; cursor: pointer; color: var(--ink-2); transition: .18s;
}
.tabs button.on { background: #fff; color: var(--brand); font-weight: 600; box-shadow: 0 2px 8px rgba(11, 26, 43, .1); }
.seg { display: flex; gap: 18px; font-size: 14px; margin-bottom: 18px; }
.seg a { color: var(--muted); cursor: pointer; padding-bottom: 4px; border-bottom: 2px solid transparent; }
.seg a.on { color: var(--brand); font-weight: 600; border-color: var(--brand); }
.code-row { display: flex; gap: 10px; }
.code-row .input { flex: 1; }
.code-row .btn { flex-shrink: 0; }
.divider { display: flex; align-items: center; gap: 14px; color: var(--muted); font-size: 13px; margin: 24px 0; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--line); }

/* ---------- Member ---------- */
.member-layout { display: grid; grid-template-columns: 240px 1fr; gap: 28px; align-items: start; }
.side-nav { position: sticky; top: 96px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 12px; }
.side-nav a {
  display: flex; align-items: center; gap: 10px; padding: 11px 14px; border-radius: 10px;
  font-size: 15px; color: var(--ink-2); transition: .16s;
}
.side-nav a:hover { background: var(--bg-soft); }
.side-nav a.on { background: rgba(14, 107, 168, .08); color: var(--brand); font-weight: 600; }
.side-nav .logout { border-top: 1px solid var(--line); margin-top: 8px; padding-top: 8px; }
.panel { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; margin-bottom: 22px; }
.panel h3 { margin: 0 0 6px; font-size: 20px; }
.panel .panel-sub { color: var(--muted); font-size: 14px; margin: 0 0 24px; }
.panel-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.panel-head h3 { margin-bottom: 6px; }
.panel-tools { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
table.data td.msg-cell { min-width: 220px; max-width: 340px; white-space: normal; line-height: 1.6; }

.user-chip {
  display: flex; align-items: center; gap: 12px; padding: 16px 18px; border-radius: var(--radius);
  background: linear-gradient(120deg, #0b1a2b, #0e6ba8); color: #fff; margin-bottom: 22px;
}
.user-chip .avatar {
  width: 44px; height: 44px; border-radius: 50%; background: rgba(255, 255, 255, .18);
  display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 600;
}
.user-chip .u-meta { overflow: hidden; }
.user-chip .u-meta b { display: block; font-size: 15px; }
.user-chip .u-meta span { font-size: 12px; color: rgba(255, 255, 255, .7); word-break: break-all; }

table.data { width: 100%; border-collapse: collapse; font-size: 14px; }
table.data th {
  text-align: left; font-size: 13px; color: var(--muted); font-weight: 500;
  padding: 10px 12px; border-bottom: 1px solid var(--line); white-space: nowrap;
}
table.data td { padding: 14px 12px; border-bottom: 1px solid var(--line); vertical-align: middle; }
table.data tr:last-child td { border-bottom: none; }
.status {
  display: inline-block; font-size: 12px; padding: 3px 10px; border-radius: 999px;
  background: rgba(242, 153, 74, .14); color: #b3701f;
}
.status.done { background: rgba(18, 165, 148, .14); color: #0f7a63; }
.link-btn { background: none; border: none; color: var(--brand); cursor: pointer; font-size: 14px; padding: 0; }
.link-btn.danger { color: #c0504a; }
.link-btn:hover { text-decoration: underline; }

.uploader {
  border: 2px dashed var(--line); border-radius: var(--radius); padding: 34px; text-align: center;
  transition: .18s; cursor: pointer;
}
.uploader:hover, .uploader.drag { border-color: var(--brand); background: #f6fafd; }
.uploader p { margin: 10px 0 0; color: var(--muted); font-size: 14px; }
.uploader b { display: block; font-size: 15px; }

.file-item { display: flex; align-items: center; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.file-item:last-child { border-bottom: none; }
.file-thumb {
  width: 46px; height: 46px; border-radius: 10px; background: var(--bg-soft); flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; color: var(--brand); font-size: 12px;
}
.file-thumb img { width: 100%; height: 100%; object-fit: cover; border-radius: 10px; }
.file-meta { flex: 1; min-width: 0; }
.file-meta b { display: block; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-meta span { font-size: 12px; color: var(--muted); }
.file-actions { display: flex; gap: 14px; flex-shrink: 0; }

.empty { text-align: center; padding: 34px 0; color: var(--muted); font-size: 14px; }
.skeleton { background: linear-gradient(90deg, #eef2f7, #f7f9fc, #eef2f7); background-size: 200% 100%; animation: shimmer 1.2s infinite; border-radius: 10px; height: 96px; margin-bottom: 14px; }
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ---------- About ---------- */
.timeline { border-left: 2px solid var(--line); padding-left: 28px; margin-left: 8px; }
.tl-item { position: relative; padding-bottom: 30px; }
.tl-item::before {
  content: ""; position: absolute; left: -35px; top: 6px; width: 12px; height: 12px; border-radius: 50%;
  background: var(--brand); box-shadow: 0 0 0 4px rgba(14, 107, 168, .14);
}
.tl-item b { display: block; font-size: 15px; color: var(--brand); margin-bottom: 4px; }
.tl-item p { margin: 0; color: var(--muted); font-size: 14px; }

.founder { display: grid; grid-template-columns: 260px 1fr; gap: 40px; align-items: center; }
.founder-portrait {
  aspect-ratio: 4 / 5; border-radius: 24px; overflow: hidden;
  background: linear-gradient(150deg, #0e6ba8, #12a594);
}
.founder-portrait img { width: 100%; height: 100%; object-fit: cover; object-position: center 18%; display: block; }
.founder blockquote {
  margin: 20px 0 0; padding-left: 18px; border-left: 3px solid var(--brand-2);
  color: var(--ink-2); font-size: 16px;
}

.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }

/* ---------- 弹窗 ---------- */
/* hidden 属性必须永远生效：.modal-mask 等设置了 display:flex 的元素，
   作者样式会覆盖浏览器默认的 [hidden]{display:none}，导致弹窗常驻显示 */
[hidden] { display: none !important; }

.modal-mask {
  position: fixed; inset: 0; background: rgba(11, 26, 43, .55);
  display: flex; align-items: center; justify-content: center; padding: 24px; z-index: 300;
}
.modal {
  background: #fff; border-radius: var(--radius); padding: 32px; max-width: 460px; width: 100%;
  box-shadow: var(--shadow-lg);
}
.modal h3 { margin: 0 0 12px; font-size: 21px; font-weight: 700; }
.modal p { margin: 0 0 10px; color: var(--ink-2); font-size: 15px; }
.modal-actions { display: flex; gap: 12px; margin-top: 24px; flex-wrap: wrap; }
.trial-banner {
  position: fixed; left: 50%; bottom: 26px; transform: translateX(-50%);
  background: #0b1a2b; color: #fff; border-radius: 14px; padding: 14px 20px;
  display: flex; align-items: center; gap: 14px; z-index: 260;
  box-shadow: 0 14px 40px rgba(11, 26, 43, .32); font-size: 15px;
}
.trial-banner b { color: #6fe3d2; font-size: 18px; font-variant-numeric: tabular-nums; }

/* ---------- Helpers ---------- */
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.center { text-align: center; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.badge-soft { display: inline-block; font-size: 12px; padding: 3px 10px; border-radius: 999px; background: var(--bg-soft); color: var(--muted); }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav.open {
    display: flex; position: absolute; top: 72px; left: 0; right: 0; flex-direction: column;
    background: #fff; border-bottom: 1px solid var(--line); padding: 10px 24px 18px; box-shadow: var(--shadow);
  }
  .nav.open a { padding: 12px 0; font-size: 16px; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero { padding-top: 64px; }
  .hero h1 { font-size: 34px; }
  .hero-art { max-width: 420px; margin: 0 auto; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid, .card-grid.two, .quotes, .value-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step:not(:last-child)::after { display: none; }
  .section { padding: 64px 0; }
  .section-head h2 { font-size: 27px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .member-layout { grid-template-columns: 1fr; }
  .side-nav { position: static; }
  .founder { grid-template-columns: 1fr; }
  .founder-portrait { max-width: 240px; }
  .cta-band { padding: 40px 24px; }
  .cta-band h2 { font-size: 25px; }
  .field-row { grid-template-columns: 1fr; }
  .hero-art { min-height: 320px; }
  .hero-glow { width: 380px; height: 380px; }
  .hero-brain { width: min(300px, 86%); }
  .hero-chip { display: none; }
  .panel-tools { width: 100%; }
  table.data { display: block; overflow-x: auto; white-space: nowrap; }
}
@media (max-width: 560px) {
  .stats-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .logo-text span { display: none; }
}

/* 监护人同意勾选 */
.consent {
  display: flex; gap: 8px; align-items: flex-start;
  font-size: 13px; line-height: 1.75; color: var(--ink-2);
  background: #f7f9fc; border: 1px solid #e3e9f2; border-radius: var(--radius);
  padding: 12px 14px; cursor: pointer;
}
.consent input { margin-top: 3px; flex: 0 0 auto; width: 16px; height: 16px; }
.consent a { color: var(--brand); font-weight: 600; }

.btn-danger {
  background: #dc2626; color: #fff; border: 1px solid #dc2626;
  padding: 10px 18px; border-radius: var(--radius); font-weight: 700;
  font-size: 14px; cursor: pointer;
}
.btn-danger:hover { background: #b91c1c; }
.btn-danger:disabled { opacity: .6; cursor: default; }