/* GrainLens 专题页 —— 与许可门户同一套令牌，只作用在 .gl 里。 */
.gl {
  --gl-canvas: #010102; --gl-s1: #0f1011; --gl-s2: #141516; --gl-s3: #18191a;
  --gl-hair: #23252a; --gl-hair-strong: #2e3138;
  --gl-ink: #f7f8f8; --gl-ink-2: #d0d6e0; --gl-ink-3: #8a8f98; --gl-ink-4: #62666d;
  --gl-primary: #5e6ad2; --gl-primary-hover: #828fff;
  --gl-sans: "Inter", "PingFang SC", "Microsoft YaHei", -apple-system, system-ui, sans-serif;
  --gl-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  background: var(--gl-canvas); color: var(--gl-ink); font-family: var(--gl-sans);
  -webkit-font-smoothing: antialiased; line-height: 1.6; margin: 0;
}
.gl *, .gl *::before, .gl *::after { box-sizing: border-box; }
.gl a { color: inherit; text-decoration: none; }
.gl-wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.gl-hero { padding: 96px 0 64px; border-bottom: 1px solid var(--gl-hair);
  background: radial-gradient(60% 50% at 50% 0%, rgba(94,106,210,.18), transparent 70%); text-align: center; }
.gl-section { padding: 72px 0; border-bottom: 1px solid var(--gl-hair); }
.gl-eyebrow { font-size: 12px; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; color: var(--gl-primary-hover); margin: 0 0 12px; }
.gl-h1 { font-size: clamp(40px, 6vw, 64px); line-height: 1.05; letter-spacing: -.03em; font-weight: 600; margin: 0 0 20px; }
.gl-h2 { font-size: clamp(28px, 4vw, 40px); line-height: 1.15; letter-spacing: -.02em; font-weight: 600; margin: 0 0 12px; }
.gl-lead { font-size: 19px; color: var(--gl-ink-2); max-width: 720px; margin: 0 auto 32px; }
.gl-sub { color: var(--gl-ink-3); max-width: 720px; margin: 0 0 32px; }
.gl-cap { font-size: 13px; color: var(--gl-ink-3); margin: 20px 0 0; }
.gl-cap a { color: var(--gl-primary-hover); }
.gl-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.gl-btn { display: inline-flex; align-items: center; justify-content: center; height: 40px; padding: 0 18px; border-radius: 8px;
  font-size: 14px; font-weight: 500; border: 1px solid var(--gl-hair-strong); background: var(--gl-s2); color: var(--gl-ink); transition: background .15s, border-color .15s; }
.gl-btn:hover { background: var(--gl-s3); border-color: var(--gl-ink-4); }
.gl-btn--primary { background: var(--gl-primary); border-color: var(--gl-primary); color: #fff; }
.gl-btn--primary:hover { background: var(--gl-primary-hover); border-color: var(--gl-primary-hover); }
.gl-btn--ghost { background: transparent; }
.gl-grid { display: grid; gap: 16px; }
.gl-grid--3 { grid-template-columns: repeat(3, 1fr); }
.gl-grid--4 { grid-template-columns: repeat(4, 1fr); }
.gl-card { background: var(--gl-s1); border: 1px solid var(--gl-hair); border-radius: 12px; padding: 24px; }
.gl-card h3 { margin: 0 0 8px; font-size: 18px; font-weight: 600; letter-spacing: -.01em; }
.gl-card p { margin: 0; color: var(--gl-ink-3); font-size: 15px; }
.gl-steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.gl-steps li { counter-increment: step; background: var(--gl-s1); border: 1px solid var(--gl-hair); border-radius: 12px; padding: 18px 18px 18px 56px; position: relative; }
.gl-steps li::before { content: counter(step); position: absolute; left: 18px; top: 18px; width: 26px; height: 26px; border-radius: 50%;
  background: var(--gl-s3); border: 1px solid var(--gl-hair-strong); font: 500 12px/24px var(--gl-mono); text-align: center; color: var(--gl-ink-2); }
.gl-steps b { display: block; font-weight: 600; margin-bottom: 2px; }
.gl-steps span { color: var(--gl-ink-3); font-size: 14px; }
.gl-price { background: var(--gl-s1); border: 1px solid var(--gl-hair); border-radius: 12px; padding: 24px; display: flex; flex-direction: column; }
.gl-price--featured { border-color: var(--gl-primary); box-shadow: 0 0 0 1px var(--gl-primary) inset; }
.gl-price__name { font-weight: 600; display: flex; align-items: center; gap: 8px; }
.gl-price__amt { font-size: 30px; font-weight: 600; letter-spacing: -.02em; margin: 12px 0 2px; }
.gl-price__amt small { font-size: 13px; font-weight: 400; color: var(--gl-ink-3); letter-spacing: 0; }
.gl-price__note { font-size: 13px; color: var(--gl-ink-3); margin-bottom: 16px; }
.gl-price ul { list-style: none; margin: 0 0 20px; padding: 0; color: var(--gl-ink-2); font-size: 14px; flex: 1; }
.gl-price li { padding: 6px 0 6px 20px; position: relative; border-top: 1px solid var(--gl-hair); }
.gl-price li::before { content: "✓"; position: absolute; left: 0; color: var(--gl-primary-hover); }
.gl-badge { font-size: 11px; font-weight: 500; padding: 2px 8px; border-radius: 999px; background: rgba(94,106,210,.18); color: var(--gl-primary-hover); }
.gl-faq details { border-top: 1px solid var(--gl-hair); padding: 14px 0; }
.gl-faq details:last-of-type { border-bottom: 1px solid var(--gl-hair); }
.gl-faq summary { cursor: pointer; font-weight: 500; list-style: none; }
.gl-faq summary::-webkit-details-marker { display: none; }
.gl-faq summary::after { content: "+"; float: right; color: var(--gl-ink-3); }
.gl-faq details[open] summary::after { content: "–"; }
.gl-faq p { color: var(--gl-ink-3); margin: 8px 0 0; font-size: 15px; }
.gl-body { margin-top: 32px; color: var(--gl-ink-2); }
.gl-body:empty { display: none; }
@media (max-width: 900px) { .gl-grid--4 { grid-template-columns: repeat(2, 1fr); } .gl-steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .gl-grid--3, .gl-grid--4, .gl-steps { grid-template-columns: 1fr; } .gl-hero { padding: 64px 0 48px; } .gl-section { padding: 48px 0; } .gl-wrap { padding: 0 16px; } }

/* 演示面板（与许可门户同一份） */
/* demo */
.gl .demo{background:var(--gl-s1);border:1px solid var(--gl-hair);border-radius:12px;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.gl .demo-bar{display:flex;align-items:center;gap:8px;height:36px;padding:0 12px;border-bottom:1px solid var(--gl-hair);font-size:12px;color:var(--gl-ink-3)}
.gl .demo-bar i{width:8px;height:8px;border-radius:50%;background:var(--gl-hair-strong);display:inline-block}
.gl .demo-bar .tab{margin-left:auto;font-family:var(--gl-mono)}
.gl .demo svg{display:block;width:100%;height:auto}
.gl .demo-foot{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--gl-hair)}
.gl .demo-foot div{padding:12px 14px;border-right:1px solid var(--gl-hair)}
.gl .demo-foot div:last-child{border-right:0}
.gl .demo-foot b{display:block;font:500 18px/1.2 var(--gl-mono);letter-spacing:-.02em}
.gl .demo-foot span{font-size:11px;color:var(--gl-ink-3);text-transform:uppercase;letter-spacing:.06em}
.gl .gl-box{fill:none;stroke:var(--gl-primary-hover);stroke-width:1.5;opacity:0}
.gl .gl-lbl{font:500 9px var(--gl-mono);fill:#fff;opacity:0}
.gl .gl-tag{fill:var(--gl-primary);opacity:0}
.gl .scan{fill:url(#scan)}
.gl .curve{fill:none;stroke:var(--gl-primary-hover);stroke-width:1.6;stroke-dasharray:400;stroke-dashoffset:400;animation:draw 6s ease-out infinite}
.gl .curve2{stroke:#4cb782;animation-delay:.4s}
@keyframes draw{0%{stroke-dashoffset:400}55%,100%{stroke-dashoffset:0}}
@keyframes pop{0%{opacity:0;transform:scale(.96)}12%{opacity:1;transform:scale(1)}85%{opacity:1}100%{opacity:0}}
@keyframes sweep{0%{transform:translateY(-100%)}100%{transform:translateY(100%)}}
.gl .sweep{animation:sweep 6s linear infinite;transform-origin:center}
@media (prefers-reduced-motion:reduce){.curve,.curve2{animation:none;stroke-dashoffset:0}.sweep{animation:none;display:none}.gl-box,.gl-lbl,.gl-tag{opacity:1!important;animation:none!important}}

.gl-hero .gl-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;text-align:left}
.gl-lead{margin-left:0}
.gl-actions{justify-content:flex-start}
.gl-lang{display:inline-flex;border:1px solid var(--gl-hair);border-radius:8px;overflow:hidden;margin-bottom:24px}
.gl-lang button{background:transparent;border:0;height:30px;padding:0 10px;font-size:12px;color:var(--gl-ink-3);cursor:pointer;font-family:inherit}
.gl-lang button[aria-pressed=true]{background:var(--gl-s2);color:var(--gl-ink)}
.gl-num{font:500 40px/1 var(--gl-mono);letter-spacing:-.03em;margin-bottom:14px}
.gl-num small{font-size:14px;color:var(--gl-ink-3);letter-spacing:0;margin-left:4px}
@media (max-width:900px){.gl-hero .gl-wrap{grid-template-columns:1fr}}