:root{--bg:#f7f6fb;--card:#fff;--ink:#1c1631;--mut:#6b6880;--line:#ebe8f3;--pri:#7c3aed;--pk:#ec4899;--hot1:#ff5f6d;--hot2:#ffc371;--r:18px;--sh:0 10px 30px -12px rgba(76,29,149,.18)}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif}
a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:10px;top:10px;background:#fff;padding:6px 10px;z-index:99}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.muted{color:var(--mut);font-size:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 18px;border-radius:999px;font-weight:700;font-size:15px;line-height:1.2;transition:transform .15s,box-shadow .15s;white-space:nowrap}
.btn:hover{transform:translateY(-2px)}
.btn-hot{color:#fff;background:linear-gradient(135deg,var(--hot1),#f43f5e 45%,var(--pk));box-shadow:0 10px 24px -8px rgba(244,63,94,.6)}
.btn-ghost{color:#fff;border:1.5px solid rgba(255,255,255,.55);background:rgba(255,255,255,.08)}
.btn-lg{padding:14px 26px;font-size:16px}
.ey{margin:0 0 6px;font-size:12px;letter-spacing:.14em;font-weight:800;color:var(--pri);text-transform:uppercase}
/* header */
.hd{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:saturate(1.6) blur(14px);border-bottom:1px solid var(--line)}
.hd-in{display:flex;align-items:center;gap:22px;height:66px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.lg-mark{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;color:#fff;font-weight:900;font-size:21px;background:linear-gradient(135deg,var(--pri),var(--pk));box-shadow:0 6px 16px -6px rgba(124,58,237,.7)}
.lg-t{display:flex;flex-direction:column;line-height:1.15}.lg-t b{font-size:18px}.lg-t small{font-size:11px;color:var(--mut);letter-spacing:.06em}
.nav{display:flex;gap:4px;flex:1;overflow-x:auto;scrollbar-width:none}.nav::-webkit-scrollbar{display:none}
.nav a{padding:7px 12px;border-radius:999px;font-size:14.5px;color:#3b3552;white-space:nowrap}
.nav a:hover,.nav a[aria-current]{background:#f1ebff;color:var(--pri);font-weight:700}
/* hero */
.hero{position:relative;overflow:hidden;color:#fff;background:radial-gradient(900px 500px at 85% -10%,rgba(236,72,153,.55),transparent 60%),radial-gradient(700px 500px at 0% 110%,rgba(56,189,248,.35),transparent 60%),linear-gradient(135deg,#1e1145,#3b0f6b 55%,#5b1046);padding:56px 0 30px}
.hero-in{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.hero .ey{color:#fbcfe8}
.hero h1{font-size:clamp(28px,4vw,46px);line-height:1.2;margin:6px 0 16px;letter-spacing:-.01em}
.hero-d{color:#e9e1ff;font-size:17px;max-width:620px;margin:0 0 24px}
.hero-btn{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:22px}
.chips{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.chips a{display:inline-block;padding:5px 13px;border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);font-size:13.5px}
.chips a:hover{background:rgba(255,255,255,.25)}
.chips-l a{background:#fff;border-color:var(--line);color:#4c4370}.chips-l a:hover{border-color:var(--pri);color:var(--pri)}
.hero-card{position:relative;border-radius:22px;overflow:hidden;box-shadow:0 30px 60px -20px rgba(0,0,0,.6);transform:rotate(1.2deg);border:4px solid rgba(255,255,255,.15)}
.hero-img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-cap{position:absolute;left:0;right:0;bottom:0;padding:40px 18px 16px;background:linear-gradient(transparent,rgba(15,5,35,.92));font-weight:700;font-size:15px;line-height:1.45}
.hero-cap .pill{margin-right:8px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:36px}
.stats div{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:12px 16px;display:flex;align-items:baseline;gap:10px}
.stats b{font-size:26px}.stats span{color:#ddd3ff;font-size:14px}
/* ribbon */
.ribbon{margin:-0px 0 0;transform:translateY(-18px);display:flex;align-items:center;justify-content:space-between;gap:16px;background:#fff;border-radius:var(--r);padding:16px 22px;box-shadow:var(--sh);border:1px solid var(--line)}
.ribbon b{display:inline-block;margin-right:10px;padding:3px 10px;border-radius:8px;background:linear-gradient(135deg,var(--hot1),var(--hot2));color:#fff;font-size:13px}
.ribbon span{color:#4c4370;font-size:15px}
/* sections */
.sec{margin:34px 0}
.sec-h{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.sec-h h2{margin:0;font-size:24px;display:flex;align-items:center;gap:10px}
.dot{width:12px;height:26px;border-radius:6px;background:linear-gradient(180deg,var(--c1,var(--pri)),var(--c2,var(--pk)))}
.more{color:var(--pri);font-weight:700;font-size:14.5px;white-space:nowrap}
.sec-d{color:var(--mut);margin:-4px 0 16px;max-width:900px}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{background:var(--card);border-radius:var(--r);overflow:hidden;border:1px solid var(--line);display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh)}
.card-img{display:block;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,var(--c1),var(--c2))}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}.card:hover .card-img img{transform:scale(1.05)}
.card-b{padding:14px 16px 16px;display:flex;flex-direction:column;flex:1}
.card-meta{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:0 0 8px;font-size:13px;color:var(--mut)}
.pill{display:inline-block;padding:2px 10px;border-radius:999px;color:#fff;font-size:12.5px;font-weight:700;background:linear-gradient(135deg,var(--c1,var(--pri)),var(--c2,var(--pk)))}
.card h3{font-size:16.5px;line-height:1.45;margin:0 0 8px}.card h3 a:hover{color:var(--pri)}
.card-d{color:var(--mut);font-size:14px;line-height:1.6;margin:0 0 10px;flex:1}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin:0}.tags span,.tags a{font-size:12.5px;padding:2px 9px;border-radius:7px;background:#f4f1fb;color:#5b5376}
.tags-l{margin-top:20px;align-items:center}.tags-l a{background:#f1ebff;color:var(--pri);font-weight:600}
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px}
@media(min-width:1081px){.tiles{grid-template-columns:repeat(7,1fr)}}
.tile{position:relative;overflow:hidden;border-radius:16px;padding:18px 16px;color:#fff;min-height:118px;display:flex;flex-direction:column;justify-content:flex-end;background:linear-gradient(135deg,var(--c1),var(--c2));transition:transform .2s}
.tile:hover{transform:translateY(-3px) scale(1.01)}
.tile-ic{position:absolute;right:-6px;top:-10px;font-size:54px;font-weight:900;opacity:.22;letter-spacing:-.04em}
.tile b{font-size:17px}.tile small{opacity:.9;font-size:12.5px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:4px 18px;margin-bottom:10px}
.faq summary{cursor:pointer;list-style:none}.faq summary h3{display:inline;font-size:16.5px}.faq summary::before{content:"Q";display:inline-grid;place-items:center;width:24px;height:24px;margin-right:10px;border-radius:7px;background:var(--pri);color:#fff;font-size:13px;font-weight:800}
.faq details p{color:#4c4370;margin:4px 0 12px 34px}
/* crumbs */
.crumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;padding:0;margin:18px 0 14px;font-size:13.5px;color:var(--mut)}
.crumb li+li::before{content:"›";margin-right:6px;color:#b5aecb}.crumb a:hover{color:var(--pri)}
.crumb li[aria-current]{color:#3b3552;max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
/* landing header */
.lp-h{border-radius:22px;padding:34px 34px;color:#fff;background:radial-gradient(500px 300px at 90% 0%,rgba(255,255,255,.22),transparent 60%),linear-gradient(135deg,var(--c1,#4c1d95),var(--c2,#be185d));margin-bottom:10px}
.lp-h .ey{color:rgba(255,255,255,.85)}.lp-h h1{margin:0 0 10px;font-size:clamp(24px,3.2vw,36px);line-height:1.25}.lp-h p{max-width:860px;margin:0 0 18px;opacity:.95}
/* article */
.art-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;align-items:start}
.art{background:#fff;border-radius:22px;border:1px solid var(--line);padding:30px 34px}
.art.solo{max-width:860px;margin:20px auto}
.art-h h1{font-size:clamp(23px,3vw,32px);line-height:1.35;margin:4px 0 16px}
.spec{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:0 0 18px}
.spec div{background:#f8f6fd;border-radius:12px;padding:8px 12px}.spec dt{font-size:12px;color:var(--mut)}.spec dd{margin:0;font-weight:700;font-size:14.5px}
.cta-box{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;border-radius:16px;background:linear-gradient(135deg,#fff1f5,#f5f0ff);border:1px solid #f6d5e5;margin:14px 0 22px}
.cta-box b{display:block;font-size:16px}.cta-box span{color:#6b5a7e;font-size:14px}
.cta-big{padding:22px 24px;background:linear-gradient(135deg,#2e1065,#6d28d9 60%,#be185d);border:0;color:#fff}.cta-big span{color:#e9d5ff}
.prose{font-size:16.5px}.prose h2{font-size:22px;margin:34px 0 12px;padding-left:14px;border-left:5px solid var(--pk);line-height:1.4}
.prose h3{font-size:18px;margin:22px 0 8px;color:#3b1d74}.prose p{margin:0 0 14px}.prose ul,.prose ol{padding-left:1.4em;margin:0 0 16px}.prose li{margin:4px 0}
.prose a{color:var(--pri);text-decoration:underline;text-underline-offset:3px}.prose a.btn{text-decoration:none;color:#fff}
.lead{font-size:17px;background:#faf8ff;border-radius:14px;padding:16px 18px;border:1px dashed #d9ccff;color:#3b3552}
.fig{margin:18px 0 22px}.fig img{border-radius:14px;margin:0 auto;box-shadow:0 12px 30px -16px rgba(30,10,60,.45)}
.fig figcaption{text-align:center;font-size:13px;color:var(--mut);margin-top:8px}
.pn{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:26px}.pn a{display:block;padding:14px 16px;border-radius:14px;border:1px solid var(--line);font-weight:700;font-size:14.5px;line-height:1.45}.pn a:hover{border-color:var(--pri)}.pn small{display:block;color:var(--mut);font-weight:400}.pn .nx{text-align:right}
.side{position:sticky;top:84px;display:flex;flex-direction:column;gap:16px}
.side-cta{border-radius:20px;padding:22px;color:#fff;background:radial-gradient(240px 160px at 100% 0,rgba(255,195,113,.45),transparent 70%),linear-gradient(160deg,#3b0f6b,#7c3aed 60%,#db2777)}
.side-cta .ey{color:#fde68a}.side-cta b{font-size:20px;display:block}.side-cta p{margin:6px 0 14px;font-size:14px;color:#f3e8ff}.side-cta .btn{width:100%}
.toc,.side-box{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px}
.toc ol,.side-box ul{margin:8px 0 0;padding-left:1.2em;font-size:14.5px}.toc li,.side-box li{margin:5px 0}.toc a:hover,.side-box a:hover{color:var(--pri)}
.tbl{overflow-x:auto;margin:0 0 18px}.tbl table{width:100%;border-collapse:collapse;font-size:14.5px}.tbl caption{text-align:left;font-weight:700;margin-bottom:6px}
.tbl th,.tbl td{border-bottom:1px solid var(--line);padding:8px 10px;text-align:left}.tbl th{background:#f6f2ff}
.pager{display:flex;justify-content:center;gap:8px;margin:28px 0}.pager a{min-width:42px;padding:8px 14px;text-align:center;border-radius:12px;background:#fff;border:1px solid var(--line);font-weight:700}.pager a[aria-current]{background:var(--pri);color:#fff;border-color:var(--pri)}
/* end */
.endcta{margin-top:50px;background:linear-gradient(120deg,#ff5f6d,#ec4899 45%,#7c3aed);color:#fff}
.endcta-in{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:34px 20px}
.endcta .ey{color:#fff3c4}.endcta h2{margin:0 0 6px;font-size:24px}.endcta p{margin:0;opacity:.95}
.endcta .btn-hot{background:#fff;color:#be185d;box-shadow:0 10px 30px -10px rgba(0,0,0,.4)}
.ft{background:#150d2e;color:#cfc8e6;padding:40px 0 20px}.ft .lg-t small{color:#9d94bd}
.ft-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:26px}.ft h3{color:#fff;font-size:15px;margin:4px 0 10px}.ft ul{list-style:none;padding:0;margin:0;font-size:14px}.ft li{margin:5px 0}.ft a:hover{color:#fff}.ft .muted{color:#9d94bd}
.copy{border-top:1px solid #2c2250;margin-top:24px;padding-top:16px;font-size:13px;color:#8a82aa}
@media (max-width:1080px){.grid{grid-template-columns:repeat(3,1fr)}.hd-cta{display:none}}
@media (max-width:900px){.hero-in,.art-grid{grid-template-columns:1fr}.hero-card{transform:none}.side{position:static}.grid{grid-template-columns:repeat(2,1fr)}.ft-grid{grid-template-columns:1fr 1fr}.stats{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.wrap{padding:0 14px}.hd-in{height:auto;flex-wrap:wrap;gap:6px;padding:8px 0}.nav{order:3;width:100%;flex:none}.grid{gap:12px}.card-d{display:none}.card h3{font-size:15px}.card-b{padding:10px 12px 12px}
.art{padding:20px 16px;border-radius:16px}.spec{grid-template-columns:repeat(2,1fr)}.cta-box,.ribbon,.endcta-in{flex-direction:column;align-items:stretch;text-align:left}.cta-box .btn,.ribbon .btn{width:100%}.lp-h{padding:24px 18px}.pn{grid-template-columns:1fr}.ft-grid{grid-template-columns:1fr}.hero{padding:34px 0 22px}}