:root{--bg:#FBFBF9;--bg-pure:#FFFFFF;--bg-soft:#F4F2EE;--bg-tint:#EDF1FE;--bg-warm:#FFF1E8;--bg-mint:#E8F6EC;--bg-violet:#F1ECFB;--ink:#0B0E14;--ink-2:#2C3340;--ink-3:#5A6373;--ink-muted:#8C95A6;--ink-faint:#BEC5D2;--primary:#1E40FF;--primary-dark:#1330C9;--primary-darker:#0A2095;--primary-soft:#E8EEFF;--primary-line:#C5D2FF;--accent:#FF5722;--accent-dark:#E04316;--accent-soft:#FFE5DA;--green:#00A86B;--green-soft:#DAF5E7;--warn:#DC2626;--warn-soft:#FFE5E5;--warn-line:#FFB8B8;--gold:#D97706;--gold-soft:#FEF3C7;--violet:#6E3DCB;--violet-soft:#EFE6FB;--line:#E8E5DE;--line-soft:#F0EDE6;--line-strong:#D5D0C5;--line-ink:#0B0E14;--sans:"Inter",-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB",sans-serif;--serif:"Noto Serif SC","Source Serif Pro","Georgia","Songti SC",serif;--display:"Inter","PingFang SC",sans-serif;--mono:"JetBrains Mono","SF Mono",Consolas,monospace;--hand:"Caveat","Bradley Hand",cursive;--sh-xs:0 1px 2px rgba(11,14,20,.04);--sh-sm:0 2px 4px rgba(11,14,20,.05),0 1px 2px rgba(11,14,20,.04);--sh:0 4px 12px rgba(11,14,20,.06),0 2px 4px rgba(11,14,20,.04);--sh-md:0 12px 28px rgba(11,14,20,.08),0 4px 8px rgba(11,14,20,.05);--sh-lg:0 24px 56px rgba(11,14,20,.12),0 8px 16px rgba(11,14,20,.05);--sh-blue:0 12px 32px rgba(30,64,255,.22);--sh-orange:0 10px 26px rgba(255,87,34,.30);--sh-card:0 1px 0 rgba(11,14,20,.05),0 6px 18px rgba(11,14,20,.04);--r-xs:4px;--r-sm:8px;--r:12px;--r-lg:16px;--r-xl:24px;--r-2xl:32px;--r-full:999px;--maxw:1240px;--readw:760px}*{box-sizing:border-box}*:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:3px}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.7;letter-spacing:-0.005em;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;font-feature-settings:"kern" 1,"liga" 1,"calt" 1}img,svg{max-width:100%;height:auto;display:block}a{color:var(--primary);text-decoration:none;transition:color .15s}a:hover{color:var(--primary-dark)}::selection{background:#FFE066;color:var(--ink)}.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;font-weight:700}.skip-link:focus{left:0;top:0;z-index:9999}.tickerbar{background:var(--ink);color:#fff;font-family:var(--mono);font-size:0.78rem;padding:7px 24px;border-bottom:1px solid #1f2530;overflow:hidden;letter-spacing:0.02em}.ticker-inner{max-width:var(--maxw);margin:0 auto;display:flex;align-items:center;gap:28px;flex-wrap:nowrap;white-space:nowrap;overflow-x:auto;scrollbar-width:none}.ticker-inner::-webkit-scrollbar{display:none}.tk{display:inline-flex;align-items:center;gap:8px}.tk .label{color:var(--ink-faint);font-size:0.85em}.tk .val{color:#fff;font-weight:600}.tk .delta{font-size:0.85em;padding:2px 6px;border-radius:3px;font-weight:600}.tk .delta.up{background:rgba(0,168,107,.18);color:#4ADE80}.tk .delta.down{background:rgba(220,38,38,.18);color:#F87171}.tk-item{display:inline-flex;align-items:center;gap:8px}.tk-sym{color:var(--ink-3);font-weight:600;margin-right:6px;font-size:0.85em;letter-spacing:0.04em}.tk-price{color:#fff;font-weight:600}.tk-chg{padding:2px 6px;border-radius:4px;font-weight:600;font-size:0.85em}.tk-chg.up{color:#00E676;background:rgba(0,230,118,.12)}.tk-chg.down{color:#FF5252;background:rgba(255,82,82,.14)}.tk-note{margin-left:auto;color:var(--ink-faint);font-size:0.85em}nav.top{position:sticky;top:0;z-index:100;background:rgba(251,251,249,0.92);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--line-soft)}.nav-wrap{max-width:var(--maxw);margin:0 auto;padding:16px 28px;display:flex;align-items:center;gap:36px}.brand{display:inline-flex;align-items:center;gap:12px;color:var(--ink);font-weight:700;font-size:1.18rem;letter-spacing:-0.02em}.brand:hover{color:var(--primary);text-decoration:none}.brand-mark{width:38px;height:38px;flex-shrink:0}.brand-name{display:flex;flex-direction:column;line-height:1.05}.brand-name .sub{font-size:0.62em;color:var(--ink-3);font-weight:500;letter-spacing:0.04em;margin-top:2px;font-family:var(--mono)}.nav-links{display:flex;gap:24px;list-style:none;margin:0;padding:0;font-size:0.96rem;flex:1}.nav-links a{color:var(--ink-2);padding:6px 0;border-bottom:2px solid transparent;font-weight:500;transition:color .12s,border-color .12s}.nav-links a:hover{color:var(--primary);border-bottom-color:var(--primary)}.nav-cta{display:inline-flex;align-items:center;gap:6px;padding:11px 20px;border-radius:var(--r-full);background:var(--ink);color:#fff !important;font-weight:600;font-size:0.92rem;min-height:44px;box-sizing:border-box;transition:transform .12s,box-shadow .12s,background .12s}.nav-cta:hover{background:var(--primary);transform:translateY(-1px);box-shadow:var(--sh-blue)}.nav-cta::after{content:"→";margin-left:2px}.nav-toggle{display:none;background:none;border:1.5px solid var(--line-strong);border-radius:var(--r-sm);width:40px;height:40px;cursor:pointer;color:var(--ink);font-size:1.2rem}.disclosure{background:var(--bg-soft);border-bottom:1px solid var(--line-soft);color:var(--ink-3);font-size:0.82rem;text-align:center;padding:8px 24px;line-height:1.5}.disclosure a{color:var(--ink-2);text-decoration:underline;text-decoration-color:var(--primary-line)}.disclosure code{background:var(--primary-soft);padding:1px 6px;border-radius:3px;font-size:0.9em;color:var(--primary-dark)}.hero{padding:60px 28px 72px;background:var(--bg);position:relative;overflow:hidden}.hero::before{content:"";position:absolute;top:-100px;right:-200px;width:800px;height:800px;background:radial-gradient(circle,rgba(30,64,255,.06) 0%,transparent 60%);pointer-events:none}.hero-grid{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,480px);gap:48px;align-items:center;position:relative;z-index:1}.hero-eye{display:inline-flex;align-items:center;gap:8px;padding:5px 12px 5px 8px;border-radius:var(--r-full);background:#fff;border:1px solid var(--line);font-size:0.8rem;font-weight:600;color:var(--ink-2);margin-bottom:22px;font-family:var(--mono);letter-spacing:0.02em}.hero-eye .pulse{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(0,168,107,.18);animation:pulse 2.4s ease-in-out infinite}@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(0,168,107,.18)}50%{box-shadow:0 0 0 8px rgba(0,168,107,.05)}}h1.hero-title{font-family:var(--display);font-size:clamp(2.2rem,4.4vw,3.4rem);line-height:1.08;font-weight:800;letter-spacing:-0.035em;margin:0 0 24px;color:var(--ink)}h1.hero-title .mark{display:inline-block;position:relative;padding:0 4px}h1.hero-title .mark::before{content:"";position:absolute;left:-2px;right:-2px;bottom:4px;height:14px;background:#FFE066;z-index:-1;border-radius:2px}h1.hero-title .accent{color:var(--accent)}.hero-sub{font-size:1.16rem;line-height:1.6;color:var(--ink-2);max-width:580px;margin:0 0 32px}.hero-sub strong{color:var(--ink);font-weight:700}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px}.hero-meta{display:flex;gap:28px;flex-wrap:wrap;font-size:0.85rem;color:var(--ink-3)}.hero-meta-item{display:inline-flex;align-items:center;gap:8px}.hero-meta-item::before{content:"✓";color:var(--green);font-weight:800;width:18px;height:18px;background:var(--green-soft);border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:0.7rem}.hero-perk-pill{display:inline-flex;align-items:center;gap:10px;padding:12px 22px;margin:0 0 24px;background:linear-gradient(135deg,#FFF1D6 0%,#FFE9C2 100%);border:1px solid #F4B860;border-radius:var(--r);color:#92400E;font-size:1rem;font-weight:600;line-height:1.45;max-width:100%;box-sizing:border-box;box-shadow:0 2px 8px rgba(244,184,96,0.18)}.hero-perk-pill .hero-perk-icon{color:var(--accent);font-size:1.1rem;line-height:1;animation:pulse-warm 2.4s ease-in-out infinite}@keyframes pulse-warm{0%,100%{opacity:1}50%{opacity:0.55}}.hero-perk-pill strong{color:#78350F;font-weight:800}.hero-perk-pill sup{font-size:0.72em;line-height:0}.hero-perk-pill sup a{color:#92400E;text-decoration:underline;text-decoration-style:dotted}.hero-foot{margin:22px 0 0;max-width:600px;font-size:0.78rem;color:var(--ink-3);line-height:1.55}.hero-foot small{font-size:inherit}.hero-foot a{color:var(--ink-2);text-decoration:underline;text-decoration-color:var(--line-strong)}.hero-foot a:hover{color:var(--primary)}@media (max-width:540px){.hero-perk-pill{font-size:0.92rem;padding:10px 16px}}.hero-mock{position:relative;padding:20px;filter:drop-shadow(0 30px 60px rgba(11,14,20,.18)) drop-shadow(0 6px 12px rgba(11,14,20,.06))}.hero-mock svg.okx-mock{width:100%;height:auto;max-width:480px;border-radius:var(--r-lg);display:block;margin-left:auto}.float-badge{position:absolute;padding:10px 14px;background:#fff;border:1px solid var(--line);border-radius:var(--r);display:inline-flex;align-items:center;gap:8px;font-size:0.84rem;font-weight:600;box-shadow:var(--sh-md)}.float-badge.fb-1{top:-8px;left:-8px}.float-badge.fb-2{bottom:30px;left:-20px}.float-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--green)}.float-badge.fb-2 .dot{background:var(--accent)}.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 26px;border-radius:var(--r-full);font-weight:600;font-size:0.98rem;border:1.5px solid transparent;transition:all .14s ease;white-space:nowrap;cursor:pointer;text-decoration:none;font-family:var(--sans)}.btn-primary{background:var(--accent-dark);color:#fff !important;box-shadow:var(--sh-orange);font-weight:700}.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 16px 36px rgba(255,87,34,.40);text-decoration:none}.btn-ink{background:var(--ink);color:#fff !important;box-shadow:0 6px 16px rgba(11,14,20,.18)}.btn-ink:hover{background:#1F2A3F;transform:translateY(-2px);text-decoration:none}.btn-secondary{background:var(--bg-pure);color:var(--ink) !important;border-color:var(--line-strong)}.btn-secondary:hover{border-color:var(--ink);color:var(--ink) !important;text-decoration:none}.btn-blue{background:var(--primary);color:#fff !important;box-shadow:var(--sh-blue)}.btn-blue:hover{background:var(--primary-dark);transform:translateY(-2px);text-decoration:none}.btn-lg{padding:16px 30px;font-size:1.04rem}.btn-sm{padding:8px 16px;font-size:0.88rem}.btn::after{content:"→";transition:transform .15s}.btn-secondary::after,.btn:where(.no-arrow)::after{content:""}.btn:hover::after{transform:translateX(3px)}.trust{background:var(--bg-pure);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:22px 28px}.trust-inner{max-width:var(--maxw);margin:0 auto;display:flex;gap:36px;align-items:center;flex-wrap:wrap;justify-content:center;font-size:0.88rem;color:var(--ink-3)}.trust-item{display:inline-flex;align-items:center;gap:8px}.trust-item .ic{width:18px;height:18px;display:inline-flex;align-items:center;justify-content:center;color:var(--green)}section.sec{max-width:var(--maxw);margin:0 auto;padding:88px 28px 30px}section.sec.tinted{max-width:none;padding-left:0;padding-right:0;background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}section.sec.tinted > .sec-inner{max-width:var(--maxw);margin:0 auto;padding:88px 28px}section.sec.dark{max-width:none;padding-left:0;padding-right:0;background:var(--ink);color:#fff}section.sec.dark > .sec-inner{max-width:var(--maxw);margin:0 auto;padding:88px 28px}section.sec.dark h2{color:#fff}section.sec.dark .sec-sub{color:rgba(255,255,255,.7)}.sec-eye{display:inline-block;font-size:0.78rem;font-weight:700;letter-spacing:0.14em;text-transform:uppercase;color:var(--accent);margin-bottom:14px;font-family:var(--mono)}.sec-head{display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;gap:24px;margin-bottom:48px}h2.sec-title{font-family:var(--display);font-size:clamp(1.85rem,3.6vw,2.6rem);font-weight:800;letter-spacing:-0.025em;color:var(--ink);margin:0 0 12px;line-height:1.15;max-width:720px}.sec-sub{font-size:1.04rem;color:var(--ink-2);max-width:640px;margin:0;line-height:1.6}.sec-side-link{font-size:0.92rem;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px}.sec-side-link:hover{color:var(--primary-dark)}.code-inline{font-family:var(--mono);background:var(--bg-soft);color:var(--primary);padding:2px 8px;border-radius:5px;font-size:0.94em;font-weight:700;letter-spacing:0.04em;white-space:nowrap;border:1px solid var(--primary-line)}.pull-quote{font-family:var(--serif);font-size:clamp(1.4rem,2.6vw,1.85rem);line-height:1.4;font-weight:500;color:var(--ink);max-width:880px;margin:0 auto;padding:40px 28px;text-align:center;position:relative;letter-spacing:-0.01em}.pull-quote::before,.pull-quote::after{content:'"';font-family:var(--serif);color:var(--accent);font-size:4rem;line-height:0;position:relative;top:0.4em;margin:0 8px}.pull-quote .pq-cite{display:block;margin-top:16px;font-family:var(--mono);font-size:0.84rem;color:var(--ink-3);text-transform:uppercase;letter-spacing:0.12em;font-weight:500}.guide-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;grid-template-rows:auto auto;gap:18px}.guide-card{background:var(--bg-pure);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px 26px;transition:transform .18s,box-shadow .18s,border-color .18s;display:block;color:var(--ink) !important;position:relative;overflow:hidden}.guide-card:hover{border-color:var(--ink);transform:translateY(-3px);box-shadow:var(--sh-md);text-decoration:none}.guide-card .gc-num{font-family:var(--mono);font-size:0.78rem;color:var(--ink-muted);margin-bottom:12px;letter-spacing:0.04em}.guide-card h3{font-family:var(--display);font-size:1.32rem;font-weight:700;letter-spacing:-0.015em;margin:0 0 8px;color:var(--ink)}.guide-card p{margin:0 0 16px;color:var(--ink-2);font-size:0.96rem;line-height:1.6}.guide-card .gc-tags{display:flex;gap:8px;flex-wrap:wrap;font-size:0.78rem;color:var(--ink-3)}.guide-card .gc-tag{padding:3px 10px;border-radius:var(--r-full);background:var(--bg-soft);color:var(--ink-3);font-weight:500}.guide-card .gc-tag.hot{background:var(--accent-soft);color:var(--accent-dark)}.guide-card .gc-tag.new{background:var(--green-soft);color:var(--green)}.guide-card .gc-mock{margin:18px 0 0;padding:14px;background:var(--bg-soft);border-radius:var(--r-sm);border:1px solid var(--line-soft)}.guide-card .gc-mock svg{width:100%;max-height:140px}.guide-card.feat{grid-column:span 1;grid-row:span 2;background:linear-gradient(180deg,var(--bg-pure) 0%,var(--primary-soft) 120%)}.guide-card.feat h3{font-size:1.6rem}.guide-card.feat .gc-mock svg{max-height:220px}.kpi-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:0;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--bg-pure);overflow:hidden;margin:30px 0 0}.kpi-cell{padding:28px 26px;border-right:1px solid var(--line-soft)}.kpi-cell:last-child{border-right:none}.kpi-cell .kpi-num{font-family:var(--display);font-size:2.6rem;font-weight:800;letter-spacing:-0.04em;line-height:1;color:var(--ink);margin-bottom:8px;font-feature-settings:"tnum" 1}.kpi-cell .kpi-num .unit{font-size:0.6em;color:var(--ink-3);margin-left:4px;font-weight:600}.kpi-cell .kpi-label{font-size:0.86rem;color:var(--ink-3);font-weight:500}.kpi-cell.hl{background:var(--bg-tint)}.kpi-cell.hl .kpi-num{color:var(--primary-darker)}.fee-viz{background:var(--bg-pure);border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;margin:30px 0}.fee-viz-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:24px;flex-wrap:wrap;gap:12px}.fee-viz-head h4{font-family:var(--display);font-size:1.3rem;margin:0;font-weight:700;letter-spacing:-0.01em}.fee-viz-head .mono{font-family:var(--mono);color:var(--ink-3);font-size:0.88rem}.fee-row{display:grid;grid-template-columns:80px 1fr 80px;gap:16px;align-items:center;padding:10px 0;border-top:1px solid var(--line-soft)}.fee-row:first-of-type{border-top:none}.fee-row .lvl{font-family:var(--mono);font-size:0.86rem;color:var(--ink-2);font-weight:600}.fee-row .bar{height:22px;border-radius:4px;position:relative;background:var(--bg-soft);overflow:hidden}.fee-row .bar-fill{position:absolute;left:0;top:0;bottom:0;background:linear-gradient(90deg,var(--primary) 0%,#5570FF 100%);border-radius:4px}.fee-row .pct{font-family:var(--mono);font-size:0.84rem;color:var(--ink-2);font-weight:600;text-align:right}.dialogues{margin-top:30px;display:grid;gap:24px}.dialogue{background:var(--bg-pure);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 30px;position:relative}.dialogue .q{font-family:var(--display);font-weight:700;font-size:1.1rem;color:var(--ink);margin:0 0 14px;padding-left:26px;position:relative;letter-spacing:-0.01em}.dialogue .q::before{content:"Q";position:absolute;left:0;top:0;font-family:var(--mono);color:var(--accent);font-weight:700}.dialogue .a{font-size:0.98rem;color:var(--ink-2);line-height:1.65;padding-left:26px;position:relative;margin:0}.dialogue .a::before{content:"A";position:absolute;left:0;top:0;font-family:var(--mono);color:var(--primary);font-weight:700}.dialogue .a strong{color:var(--ink)}.dialogue .meta{margin-top:14px;padding-top:14px;border-top:1px solid var(--line-soft);font-size:0.8rem;color:var(--ink-muted);font-family:var(--mono);letter-spacing:0.02em}.article-wrap{max-width:var(--maxw);margin:0 auto;padding:60px 28px 100px;display:grid;grid-template-columns:240px 1fr;gap:64px}.toc{position:sticky;top:110px;align-self:start;font-size:0.9rem;max-height:calc(100vh - 140px);overflow-y:auto;padding-right:10px}.toc-title{font-size:0.74rem;font-weight:700;letter-spacing:0.16em;color:var(--accent);text-transform:uppercase;margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid var(--line);font-family:var(--mono)}.toc ol{list-style:none;padding:0;margin:0;counter-reset:tx}.toc ol li{margin:0 0 11px;counter-increment:tx;line-height:1.5}.toc ol li::before{content:counter(tx,decimal-leading-zero);font-family:var(--mono);color:var(--ink-muted);margin-right:9px;font-size:0.78em}.toc a{color:var(--ink-2);display:inline}.toc a:hover{color:var(--primary);text-decoration:none}.toc a.active{color:var(--primary);font-weight:600}.article{max-width:var(--readw);min-width:0}.article header.head{margin-bottom:36px;padding-bottom:28px;border-bottom:1px solid var(--line-soft)}.article .crumb{font-size:0.84rem;color:var(--ink-3);margin-bottom:16px;font-family:var(--mono)}.article .crumb a{color:var(--ink-2)}.article .crumb a:hover{color:var(--primary)}.article .crumb .sep{margin:0 6px;color:var(--ink-muted)}.article .eyebrow{font-size:0.78rem;font-weight:700;letter-spacing:0.16em;text-transform:uppercase;color:var(--accent);margin-bottom:14px;font-family:var(--mono)}.article h1{font-family:var(--display);font-size:clamp(1.95rem,4.2vw,2.85rem);font-weight:800;line-height:1.12;letter-spacing:-0.025em;color:var(--ink);margin:0 0 22px}.article .meta{font-size:0.86rem;color:var(--ink-3);display:flex;flex-wrap:wrap;gap:12px 22px;font-family:var(--mono);letter-spacing:0.02em}.article .meta strong{color:var(--ink-2);font-weight:700}.article h2{font-family:var(--display);font-size:1.7rem;font-weight:700;letter-spacing:-0.018em;color:var(--ink);margin:64px 0 18px;scroll-margin-top:110px}.article h3{font-family:var(--display);font-size:1.22rem;font-weight:700;color:var(--ink);margin:36px 0 12px;letter-spacing:-0.012em}.article p{margin:0 0 18px;color:var(--ink)}.article ul,.article ol{padding-left:1.5em;margin:0 0 22px}.article li{margin-bottom:8px}.article strong{color:var(--ink);font-weight:700}.article code{font-family:var(--mono);font-size:0.9em;background:var(--bg-soft);border:1px solid var(--line-soft);padding:1px 6px;border-radius:4px;color:var(--primary-dark)}.article pre{background:var(--ink);color:#E5E7EB;border-radius:var(--r);padding:18px;overflow-x:auto;font-family:var(--mono);font-size:0.88rem;line-height:1.65;margin:24px 0}.article pre code{background:none;border:none;color:inherit;padding:0}.article hr{border:none;border-top:1px solid var(--line);margin:40px 0}.article blockquote{margin:26px 0;padding:4px 0 4px 24px;border-left:3px solid var(--accent);font-family:var(--serif);color:var(--ink);font-size:1.08rem;font-style:italic}.article blockquote p:last-child{margin-bottom:0}.tldr{background:var(--bg-pure);border:1px solid var(--line-strong);border-left:4px solid var(--accent);border-radius:var(--r);padding:22px 26px;margin:0 0 36px;box-shadow:var(--sh-card)}.tldr-head{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:12px}.tldr-label{font-weight:800;font-size:0.78rem;letter-spacing:0.14em;color:var(--accent);text-transform:uppercase;font-family:var(--mono)}.verified{display:inline-flex;align-items:center;gap:6px;font-size:0.76rem;font-weight:600;color:var(--green);background:var(--green-soft);padding:4px 10px;border-radius:var(--r-full);border:1px solid rgba(0,168,107,.2);font-family:var(--mono);letter-spacing:0.02em}.verified::before{content:"✓";font-weight:700}.tldr-body{font-size:1.02rem;color:var(--ink);line-height:1.65;margin:0}.tldr-body strong{color:var(--ink);background:#FFE066;padding:0 3px}.howto{margin:36px 0;counter-reset:ht}.howto-step{position:relative;padding:28px 28px 24px 96px;background:var(--bg-pure);border:1px solid var(--line);border-radius:var(--r-lg);margin-bottom:16px;counter-increment:ht;transition:border-color .14s,box-shadow .14s}.howto-step:hover{border-color:var(--ink);box-shadow:var(--sh-md)}.howto-step::before{content:counter(ht);position:absolute;top:28px;left:28px;width:48px;height:48px;border-radius:var(--r);background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.4rem;font-family:var(--display)}.howto-step h3{margin:0 0 8px;font-size:1.18rem;font-weight:700;color:var(--ink)}.howto-step h3 + .step-time{font-size:0.82rem;color:var(--ink-muted);margin-bottom:14px;display:inline-block;font-family:var(--mono)}.howto-step p{margin:0 0 12px;color:var(--ink-2)}.howto-step ul,.howto-step ol{margin:0 0 14px;color:var(--ink-2)}.howto-step .micro-cta{display:inline-flex;align-items:center;gap:6px;margin-top:8px;padding:8px 16px;background:var(--ink);color:#fff !important;font-size:0.9rem;font-weight:600;border-radius:var(--r-full);transition:background .12s,transform .12s}.howto-step .micro-cta:hover{background:var(--primary);transform:translateY(-1px);text-decoration:none}.howto-step .micro-cta::after{content:"→"}.howto-step .tip{background:var(--gold-soft);border-left:3px solid var(--gold);padding:12px 16px;border-radius:0 var(--r-sm) var(--r-sm) 0;font-size:0.92rem;color:var(--ink-2);margin:12px 0 0}.howto-step .tip strong{color:var(--ink)}.proscons{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:30px 0}.proscons-card{background:var(--bg-pure);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px}.proscons-card.pros{border-top:4px solid var(--green)}.proscons-card.cons{border-top:4px solid var(--warn)}.proscons-card h4{margin:0 0 14px;font-size:1rem;font-weight:700;color:var(--ink);display:flex;align-items:center;gap:8px;font-family:var(--display)}.proscons-card.pros h4::before{content:"+";width:22px;height:22px;background:var(--green-soft);color:var(--green);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800}.proscons-card.cons h4::before{content:"−";width:22px;height:22px;background:var(--warn-soft);color:var(--warn);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800}.proscons-card ul{padding-left:1.3em;margin:0}.proscons-card li{color:var(--ink-2);margin-bottom:8px;font-size:0.95rem;line-height:1.6}.redflags{margin:30px 0}.redflag-item{background:var(--warn-soft);border:1px solid var(--warn-line);border-radius:var(--r);padding:16px 18px 16px 50px;margin-bottom:10px;position:relative}.redflag-item::before{content:"⚑";position:absolute;left:18px;top:14px;color:var(--warn);font-size:1.2rem}.redflag-item h4{margin:0 0 4px;font-size:0.98rem;font-weight:700;color:var(--warn);font-family:var(--display)}.redflag-item p{margin:0;font-size:0.92rem;color:var(--ink-2);line-height:1.6}.compare-table{width:100%;border-collapse:separate;border-spacing:0;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;margin:26px 0;font-size:0.93rem;background:var(--bg-pure)}.compare-table th,.compare-table td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line-soft)}.compare-table th{background:var(--bg-soft);color:var(--ink);font-weight:700;border-bottom:2px solid var(--line);font-family:var(--display);font-size:0.88rem;letter-spacing:0.02em}.compare-table tr:last-child td{border-bottom:none}.compare-table tr:hover td{background:var(--bg-soft)}.compare-table td strong{color:var(--ink)}.compare-table .yes{color:var(--green);font-weight:700}.compare-table .no{color:var(--warn);font-weight:700}.risk-box{background:var(--warn-soft);border:1px solid var(--warn-line);border-left:4px solid var(--warn);border-radius:var(--r);padding:16px 22px;margin:26px 0;font-size:0.94rem;color:var(--ink)}.risk-box .label{display:inline-block;color:var(--warn);font-weight:800;font-size:0.78rem;letter-spacing:0.14em;margin-bottom:6px;text-transform:uppercase;font-family:var(--mono)}.risk-box p{margin:0;color:var(--ink-2);line-height:1.7}.rating{display:inline-flex;align-items:center;gap:8px;font-size:0.95rem;color:var(--ink-2)}.rating .stars{color:var(--gold);letter-spacing:1px;font-size:1rem}.rating .score{font-weight:700;color:var(--ink);font-family:var(--mono)}.cta-block{margin:64px auto;max-width:920px;background:var(--ink);border-radius:var(--r-2xl);padding:56px 48px;color:#fff;position:relative;overflow:hidden;box-shadow:var(--sh-lg)}.cta-block::before{content:"";position:absolute;top:-100px;right:-100px;width:400px;height:400px;background:radial-gradient(circle,rgba(255,87,34,.25) 0%,transparent 70%);pointer-events:none}.cta-block::after{content:"";position:absolute;bottom:-120px;left:-100px;width:320px;height:320px;background:radial-gradient(circle,rgba(30,64,255,.25) 0%,transparent 70%);pointer-events:none}.cta-block .cta-inner{position:relative;z-index:1;max-width:580px}.cta-block h3{font-family:var(--display);font-size:1.85rem;font-weight:800;margin:0 0 14px;letter-spacing:-0.02em;color:#fff}.cta-block p{font-size:1.04rem;color:rgba(255,255,255,.84);margin:0 0 24px}.cta-block .btn-primary{font-size:1.05rem;padding:15px 32px}.cta-block .cta-note{margin-top:18px;font-size:0.82rem;color:rgba(255,255,255,.6)}.cta-block .cta-note a{color:rgba(255,255,255,.92);text-decoration:underline}.sticky-cta{display:none}.faq{margin:36px 0}.faq details{background:var(--bg-pure);border:1px solid var(--line);border-radius:var(--r);margin-bottom:10px;padding:16px 22px;transition:border-color .12s}.faq details[open]{border-color:var(--ink)}.faq summary{cursor:pointer;font-weight:700;color:var(--ink);font-size:1.02rem;list-style:none;padding-right:28px;position:relative;font-family:var(--display);letter-spacing:-0.01em}.faq summary::-webkit-details-marker{display:none}.faq summary::after{content:"+";position:absolute;right:0;top:-2px;font-size:1.5rem;color:var(--accent);font-weight:400;line-height:1}.faq details[open] summary::after{content:"−"}.faq details p{margin:12px 0 0;color:var(--ink-2);line-height:1.7;font-size:0.96rem}.faq details ul{margin:10px 0 0;color:var(--ink-2)}.sources{margin:50px 0 0;padding:22px 26px;background:var(--bg-soft);border-radius:var(--r);font-size:0.9rem}.sources .label{display:block;font-weight:700;color:var(--ink);margin-bottom:12px;font-size:0.78rem;letter-spacing:0.12em;text-transform:uppercase;font-family:var(--mono)}.sources ol{padding-left:1.5em;margin:0;color:var(--ink-2)}.sources li{margin-bottom:6px;line-height:1.6}footer.bottom{background:var(--ink);color:#fff;padding:64px 28px 36px;margin-top:100px;font-size:0.92rem;line-height:1.7}.footer-wrap{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px}footer h4{font-size:0.78rem;font-weight:700;color:rgba(255,255,255,.65);margin:0 0 16px;letter-spacing:0.12em;text-transform:uppercase;font-family:var(--mono)}footer ul{list-style:none;padding:0;margin:0}footer ul li{margin-bottom:8px}footer a{color:rgba(255,255,255,.85)}footer a:hover{color:#fff;text-decoration:underline}footer .footer-affiliate{font-size:0.78rem;color:rgba(255,255,255,.55);margin-top:16px;padding-top:16px;border-top:1px solid rgba(255,255,255,.1);line-height:1.65}footer .footer-affiliate code{background:rgba(255,255,255,.1);color:rgba(255,255,255,.85);padding:1px 6px;border-radius:3px;font-size:0.9em}footer .brand{color:#fff}footer .brand .sub{color:rgba(255,255,255,.55)}footer .footer-bottom{max-width:var(--maxw);margin:44px auto 0;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;font-size:0.82rem;color:rgba(255,255,255,.5);font-family:var(--mono)}@media (max-width:960px){.nav-links{display:none}.nav-toggle{display:block}.nav-cta{display:none}nav.top.is-open .nav-links{display:flex;position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:0;background:var(--bg-pure);border-bottom:1px solid var(--line);padding:14px 24px 18px}nav.top.is-open .nav-links li{border-bottom:1px solid var(--line-soft);padding:10px 0}nav.top.is-open .nav-cta{display:inline-flex;margin:14px 24px;width:calc(100% - 48px);justify-content:center}.nav-wrap{gap:16px;padding:14px 22px}.tickerbar{padding:6px 16px;font-size:0.74rem}.ticker-inner{gap:18px}.tk-note{display:none}.hero{padding:44px 22px 56px}.hero-grid{grid-template-columns:1fr;gap:40px}.hero-mock{max-width:460px;margin:0 auto;padding:0}.hero-mock .float-badge{font-size:0.78rem;padding:8px 12px}.article-wrap{grid-template-columns:1fr;gap:0;padding:36px 22px 80px}.toc{position:relative;top:auto;max-height:none;padding:0;margin-bottom:30px;background:var(--bg-soft);border-radius:var(--r-lg)}.toc details{padding:14px 18px}.toc summary{cursor:pointer;list-style:none;font-weight:700;color:var(--accent);font-size:0.78rem;letter-spacing:0.14em;text-transform:uppercase;font-family:var(--mono);position:relative}.toc summary::-webkit-details-marker{display:none}.toc summary::after{content:"▾";position:absolute;right:0;top:0;color:var(--accent)}.toc .toc-title{display:none}.toc ol{margin-top:14px}section.sec{padding:60px 22px 24px}section.sec.tinted > .sec-inner{padding:60px 22px}section.sec.dark > .sec-inner{padding:60px 22px}.guide-grid{grid-template-columns:1fr}.guide-card.feat{grid-column:span 1;grid-row:span 1}.guide-card.feat .gc-mock svg{max-height:160px}.kpi-row{grid-template-columns:1fr 1fr}.kpi-cell{border-right:none;border-bottom:1px solid var(--line-soft)}.kpi-cell:nth-child(odd){border-right:1px solid var(--line-soft)}.article h2{font-size:1.4rem;margin-top:48px}.proscons{grid-template-columns:1fr}.footer-wrap{grid-template-columns:1fr 1fr;gap:28px}.footer-wrap > div:first-child{grid-column:1 / -1}.cta-block{padding:40px 28px;margin:48px auto}.cta-block h3{font-size:1.4rem}.howto-step{padding:24px 22px 20px 80px}.howto-step::before{width:38px;height:38px;font-size:1.15rem;top:24px;left:22px}.sticky-cta{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:99;padding:10px 16px;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-top:1px solid var(--line);gap:10px}.sticky-cta a{flex:1;justify-content:center;padding:12px 16px}body{padding-bottom:70px}}@media (max-width:768px){.tickerbar{display:none}}@media (max-width:540px){body{font-size:16px}h1.hero-title{font-size:2.1rem}.footer-wrap{grid-template-columns:1fr}.kpi-row{grid-template-columns:1fr}.kpi-cell{border-right:none !important}}.kpi-row > .kpi-cell:nth-child(1){background:#EEF2FF}.kpi-row > .kpi-cell:nth-child(2){background:#FFF7ED}.kpi-row > .kpi-cell:nth-child(3){background:#ECFDF5}.kpi-row > .kpi-cell:nth-child(4){background:#FEFCE8}.kpi-row > .kpi-cell.hl{box-shadow:inset 0 0 0 1px var(--primary-line)}.kpi-cell{transition:transform .18s ease,box-shadow .18s ease;position:relative}.kpi-cell:hover{transform:translateY(-2px);box-shadow:0 12px 24px -8px rgba(11,14,20,0.12);z-index:1}.btn-primary{transition:transform .15s ease,box-shadow .15s ease,background .15s ease}.btn-primary:hover{box-shadow:0 8px 20px -6px rgba(255,87,34,0.45)}.btn-primary:active{transform:translateY(0)}.btn-secondary{transition:border-color .15s ease,color .15s ease,background .15s ease}.btn-secondary:hover{border-color:var(--primary);color:var(--primary) !important;background:var(--primary-soft)}.nav-links a{position:relative;border-bottom:0;padding-bottom:6px}.nav-links a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--primary);transition:width .2s ease}.nav-links a:hover::after{width:100%}.nav-links a:hover{border-bottom-color:transparent}.guide-card,.tutorial-card,.tool-card,.article-card{transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.guide-card:hover,.tutorial-card:hover,.tool-card:hover,.article-card:hover{transform:translateY(-3px);box-shadow:0 16px 32px -12px rgba(11,14,20,0.16);border-color:var(--primary-line);text-decoration:none}@media (prefers-reduced-motion:reduce){*{transition:none !important;animation:none !important}}.hero-mock{position:relative}.hero-mock .mock-flag{position:absolute;top:14px;left:14px;z-index:2;background:rgba(11,14,20,0.78);color:#FAFAF9;font-family:var(--mono);font-size:0.7rem;font-weight:600;padding:4px 10px;border-radius:14px;letter-spacing:0.06em;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}.hero-mock svg.okx-mock{max-width:440px !important}.hero-mock .hero-flow{width:100%;max-width:460px;height:auto;display:block;margin-left:auto;border-radius:var(--r-lg);filter:drop-shadow(0 16px 32px rgba(11,14,20,0.10)) drop-shadow(0 4px 8px rgba(11,14,20,0.04))}@media (min-width:1400px){.hero-mock .hero-flow{max-width:540px}}@media (max-width:960px){.hero-mock .hero-flow{max-width:420px;margin:0 auto}}.hero-mock .mock-flag{display:none}.reviewer-note{background:var(--bg-soft);border-left:4px solid var(--primary);padding:14px 20px;margin:32px 0;border-radius:0 var(--r-sm) var(--r-sm) 0;font-size:0.92rem;color:var(--ink-2);line-height:1.65}.reviewer-note p:first-child{margin:0 0 6px;font-weight:600;color:var(--ink)}.reviewer-note p:last-child{margin:0;font-size:0.86rem;color:var(--ink-3)}.reviewer-note .reviewer-meta{display:block;margin-top:6px;font-size:0.85rem;color:var(--ink-3)}.reviewer-note a{color:var(--primary);text-decoration:underline}
/* ============================================================
   UI 高大上美化 · 杂志感 + SaaS 极简 + Apple 工艺感
   追加于 style.css 底部，后定义优先级覆盖既有规则
============================================================ */

/* 1. Hero 区背景升级 — Mesh Gradient + Noise Texture */
.hero{
  background:
    radial-gradient(circle at 80% 20%, rgba(30,64,255,0.08) 0%, transparent 50%),
    radial-gradient(circle at 20% 80%, rgba(255,87,34,0.06) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(255,224,102,0.04) 0%, transparent 60%),
    radial-gradient(circle at 90% 90%, rgba(110,61,203,0.04) 0%, transparent 50%),
    var(--bg);
}
.hero::after{
  content:'';
  position:absolute;
  inset:0;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.04 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  pointer-events:none;
  z-index:0;
  opacity:0.5;
  mix-blend-mode:multiply;
}
.hero-grid{position:relative; z-index:1;}

/* 2. Hero 信息图 hover 微动效 */
.hero-mock{perspective:1200px;}
.hero-flow{
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), filter 0.4s ease;
  will-change: transform;
}
.hero-mock:hover .hero-flow{
  transform: translateY(-4px) scale(1.015);
  filter: drop-shadow(0 24px 48px rgba(11, 14, 20, 0.16)) drop-shadow(0 8px 16px rgba(30, 64, 255, 0.10));
}

/* 3. CTA 升级 — shimmer + glow ring */
.btn-primary{
  position:relative;
  overflow:hidden;
  isolation:isolate;
  transition: box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1), transform 0.2s;
}
.btn-primary::before{
  content:'';
  position:absolute;
  inset:0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.28) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.65s cubic-bezier(0.4, 0, 0.2, 1);
  z-index:0;
  pointer-events:none;
}
.btn-primary > *{position:relative; z-index:1;}
.btn-primary:hover::before{transform: translateX(100%);}
.btn-primary:hover{
  box-shadow: 0 12px 32px -8px rgba(255, 87, 34, 0.5), 0 0 0 4px rgba(255, 87, 34, 0.12);
  transform: translateY(-1px);
}

/* 4. Section Eyebrow / Divider 升级 */
.section-eyebrow, .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:12px;
  font-size:0.82rem;
  font-weight:700;
  letter-spacing:0.2em;
  text-transform:uppercase;
  color:var(--accent);
  font-family:var(--mono);
  margin-bottom:18px;
}
.section-eyebrow::before, .eyebrow::before{
  content:'';
  width:28px;
  height:3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius:2px;
  flex-shrink:0;
}

/* 5. 卡片设计语言升级 — 编号 / 圆角 / lift / 蓝边 */
section[data-counter]{counter-reset: card-num;}
.guides-grid, .tools-grid, .articles-grid{counter-reset: card-num;}
.guide-card, .tool-card, .article-card{
  counter-increment: card-num;
  position:relative;
  background: var(--bg-pure);
  border:1px solid var(--line);
  border-radius: var(--r-xl);
  padding: 32px 28px;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.25s, border-color 0.25s;
  box-shadow: var(--sh-xs);
  overflow:hidden;
}
.guide-card::after, .tool-card::after, .article-card::after{
  content: counter(card-num, decimal-leading-zero);
  position:absolute;
  top:22px;
  right:24px;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight:700;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
  pointer-events:none;
  opacity:0.85;
}
.guide-card:hover, .tool-card:hover, .article-card:hover{
  transform: translateY(-4px);
  box-shadow: var(--sh-lg);
  border-color: var(--primary-line);
}

/* 6. Trust strip 升级 — 圆形 icon badge */
.trust{
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);
  padding: 36px 28px;
}
.trust-inner{
  max-width: var(--maxw);
  margin: 0 auto;
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.trust-item{
  display:flex;
  align-items:center;
  gap:14px;
  padding:16px 20px;
  background: var(--bg-pure);
  border:1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-xs);
  transition: transform 0.2s, box-shadow 0.2s;
}
.trust-item:hover{
  transform: translateY(-2px);
  box-shadow: var(--sh);
}
.trust-item .ic{
  width:40px;
  height:40px;
  border-radius:50%;
  background: var(--green-soft);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color: var(--green);
  font-size:1.2rem;
  font-weight:800;
  flex-shrink:0;
}

/* 7. Scroll-reveal */
.reveal-init{
  opacity:0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}
.reveal-init.is-revealed{
  opacity:1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce){
  .reveal-init{opacity:1 !important; transform:none !important; transition:none !important;}
  .btn-primary::before, .hero-flow{transition:none !important;}
}

/* 8. 全局工艺细节 */
/* 滚动条美化 */
::-webkit-scrollbar{width:12px; height:12px;}
::-webkit-scrollbar-track{background: var(--bg);}
::-webkit-scrollbar-thumb{
  background: var(--line-strong);
  border-radius:6px;
  border:3px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover{background: var(--ink-3);}

/* 等宽数字 */
.kpi-num, .tk-price, .tk .val, .price, .num, .calc-result, code, kbd{
  font-variant-numeric: tabular-nums;
}

/* 段落最佳行长 */
article p, .article p, main p{
  max-width: 68ch;
}
article p:not(.tldr-body):not(.hero-sub), .article p:not(.tldr-body):not(.hero-sub){
  line-height: 1.78;
}

/* 选择高亮 */
::selection{background:#FFE066; color: var(--ink); text-shadow:none;}
::-moz-selection{background:#FFE066; color: var(--ink);}

/* 焦点态升级 */
*:focus-visible{
  outline: 2.5px solid var(--primary);
  outline-offset: 3px;
  border-radius: 4px;
  box-shadow: 0 0 0 5px rgba(30, 64, 255, 0.12);
}

/* H2 视觉升级 */
section h2, article h2{
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(1.6rem, 2.6vw, 2.1rem);
  line-height: 1.18;
  letter-spacing: -0.022em;
  margin: 0 0 18px;
  color: var(--ink);
}

/* KPI 卡片精修 */
.kpi-cell{
  position:relative;
  overflow:hidden;
}
.kpi-cell .kpi-num{
  font-family: var(--display);
  font-weight:800;
  font-size: clamp(2.2rem, 3.6vw, 3rem);
  line-height:1;
  letter-spacing: -0.045em;
}
.kpi-cell .kpi-label{
  font-size: 0.92rem;
  color: var(--ink-3);
  margin-top: 8px;
  line-height: 1.5;
}

/* Footer 工艺细节升级（保留既有深色主题）*/
footer.bottom{
  padding: 64px 28px 36px;
  margin-top: 100px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-wrap{
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
}
@media (max-width: 768px){
  .footer-wrap{grid-template-columns: 1fr 1fr; gap:32px;}
}
footer.bottom h4{
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  margin: 0 0 14px;
  font-family: var(--mono);
}
footer.bottom ul{list-style:none; padding:0; margin:0;}
footer.bottom li{margin-bottom:10px;}
footer.bottom a{
  color: rgba(255,255,255,0.65);
  font-size: 0.94rem;
  transition: color 0.15s;
}
footer.bottom a:hover{color:#fff;}
.footer-affiliate{
  font-size: 0.86rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.65;
  margin-top: 16px;
  max-width: 380px;
}
.footer-bottom{
  max-width: var(--maxw);
  margin: 36px auto 0;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  font-family: var(--mono);
}

/* 卡片网格 gap */
.guides-grid, .tools-grid, .articles-grid{
  display:grid;
  gap:24px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* 全局动画曲线统一（仅对带过渡的元素生效）*/
a, button, .btn, .btn-primary, .btn-ghost, .guide-card, .tool-card, .article-card, .trust-item, .hero-flow{
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============ Hero Mobile Fix ============ */
/* 修复 mobile 文字溢出 + mesh gradient 太重 */
@media (max-width: 768px) {
  .hero { 
    padding: 36px 22px 56px !important;
    background: var(--bg) !important;
  }
  .hero::before,
  .hero::after {
    display: none !important; /* mobile 去掉装饰背景，专注内容 */
  }
  .hero-grid {
    grid-template-columns: 1fr !important;
    gap: 32px !important;
    padding: 0 !important;
  }
  .hero-sub {
    max-width: 100% !important;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }
  h1.hero-title {
    font-size: clamp(1.9rem, 8vw, 2.4rem) !important;
    line-height: 1.15 !important;
  }
  .hero-perk-pill,
  .hero-actions .btn,
  .hero-actions .btn-primary {
    max-width: 100%;
    font-size: 0.94rem !important;
    box-sizing: border-box;
    word-break: keep-all;
  }
  .hero-actions { flex-direction: column; gap: 10px; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .hero-mock { max-width: 100%; padding: 0 !important; }
  .hero-flow { max-width: 360px !important; margin: 0 auto !important; }
}

/* 桌面 mesh gradient 稍减弱 */
@media (min-width: 769px) {
  .hero::before {
    opacity: 0.6;
  }
  .hero::after {
    opacity: 0.4 !important;
  }
}

/* ============================================================
   Hero wow 升级 · data strip + user-quiz + recent-corrections
   2026-05-17 追加
============================================================ */

/* A. Hero 数据栏 — 站独有 hands-on 数据 */
.hero-data-strip {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 18px;
  margin: 28px 0 8px;
  padding: 18px 24px;
  background: linear-gradient(135deg, #FFFFFF 0%, #FAFAF9 100%);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-xs);
}
.hd-item { display: flex; flex-direction: column; gap: 4px; align-items: flex-start; }
.hd-num { font-family: var(--display); font-weight: 800; font-size: 1.7rem; color: var(--primary); line-height: 1; letter-spacing: -0.04em; }
.hd-label { font-size: 0.78rem; color: var(--ink-3); line-height: 1.3; }
.hd-sep { width: 1px; height: 28px; background: var(--line); }
@media (max-width: 768px) {
  .hero-data-strip { grid-template-columns: 1fr 1fr; gap: 14px; padding: 14px 16px; }
  .hd-sep { display: none; }
  .hd-num { font-size: 1.4rem; }
  .hd-label { font-size: 0.74rem; }
}

/* C. 3 类用户分流 — user-quiz section */
.user-quiz {
  padding: 64px 28px 48px;
  background: linear-gradient(180deg, var(--bg) 0%, #F4F2EE 100%);
  border-top: 1px solid var(--line-soft);
}
.quiz-inner { max-width: var(--maxw); margin: 0 auto; }
.quiz-h2 {
  font-family: var(--display);
  font-size: clamp(1.6rem, 2.6vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 28px;
  color: var(--ink);
}
.quiz-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}
.quiz-card {
  position: relative;
  display: block;
  background: var(--bg-pure);
  border: 1.5px solid var(--line);
  border-radius: var(--r-xl);
  padding: 26px 24px;
  text-decoration: none !important;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.25s, border-color 0.25s;
}
.quiz-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary-line);
  box-shadow: var(--sh-md);
}
.quiz-icon {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 18px;
}
.quiz-num {
  position: absolute;
  top: 26px; right: 26px;
  font-family: var(--mono);
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
}
.quiz-card h3 {
  font-size: 1.16rem;
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--ink);
  letter-spacing: -0.015em;
}
.quiz-card p {
  font-size: 0.92rem;
  color: var(--ink-2);
  margin: 0 0 16px;
  line-height: 1.6;
}
.quiz-link {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--primary);
  font-family: var(--mono);
  letter-spacing: 0.04em;
}
.quiz-card:hover .quiz-link { color: var(--primary-dark); }

/* D. 最近 corrections 滚动条 */
.recent-corrections {
  padding: 36px 28px;
  border-top: 1px solid var(--line-soft);
  background: var(--bg);
}
.rc-inner {
  max-width: var(--maxw);
  margin: 0 auto;
}
.rc-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}
.rc-tag {
  font-family: var(--mono);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink-2);
}
.rc-all {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--primary);
}
.rc-list {
  display: grid;
  gap: 8px;
}
.rc-item {
  display: flex;
  gap: 18px;
  padding: 14px 18px;
  background: var(--bg-pure);
  border: 1px solid var(--line-soft);
  border-radius: var(--r);
  font-size: 0.9rem;
  text-decoration: none !important;
  color: var(--ink-2);
  transition: border-color 0.15s, background 0.15s;
}
.rc-item:hover {
  border-color: var(--primary-line);
  background: var(--primary-soft);
}
.rc-date {
  font-family: var(--mono);
  font-weight: 600;
  color: var(--ink-3);
  white-space: nowrap;
  font-size: 0.82rem;
}
.rc-title {
  flex: 1;
  color: var(--ink);
}


/* ============ 语种切换器 ============ */
.lang-switcher {
  position: relative;
  display: inline-block;
}
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--r-full);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--ink-2);
  cursor: pointer;
  font-family: var(--mono);
  transition: border-color 0.15s, background 0.15s;
}
.lang-toggle:hover {
  border-color: var(--primary);
  background: var(--primary-soft);
}
.lang-toggle::after {
  content: "▾";
  font-size: 0.7em;
  margin-left: 2px;
  opacity: 0.6;
}
.lang-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--bg-pure);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-md);
  min-width: 180px;
  list-style: none;
  margin: 0; padding: 6px;
  display: none;
  z-index: 200;
}
.lang-switcher.is-open .lang-menu { display: block; }
.lang-menu a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: var(--r-sm);
  font-size: 0.92rem;
  color: var(--ink-2);
  text-decoration: none;
  transition: background 0.12s;
}
.lang-menu a:hover { background: var(--primary-soft); color: var(--primary); }
.lang-menu a[aria-current="true"] {
  background: var(--ink);
  color: #fff;
}
.lang-menu .lang-code {
  font-family: var(--mono);
  font-size: 0.74rem;
  opacity: 0.6;
}
/* ============ Mobile: lang-switcher 进入 hamburger menu ============ */
@media (max-width: 960px) {
  /* lang-switcher 默认折叠在 nav 内，由 hamburger 控制显示 */
  .lang-switcher {
    display: none;
    width: 100%;
    margin: 12px 0 0;
    padding: 12px 0 0;
    border-top: 1px solid var(--line-soft);
  }
  nav.top.is-open .lang-switcher {
    display: block;
  }
  /* mobile 下不要 dropdown 行为：toggle 隐藏，menu 直接 stacked */
  nav.top.is-open .lang-toggle {
    display: none;
  }
  nav.top.is-open .lang-menu {
    position: static;
    display: block;
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 0;
    margin: 0;
    min-width: 0;
  }
  nav.top.is-open .lang-menu li {
    list-style: none;
    margin: 0;
    padding: 0;
    border-bottom: 1px solid var(--line-soft);
  }
  nav.top.is-open .lang-menu li:last-child {
    border-bottom: none;
  }
  nav.top.is-open .lang-menu a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 8px;
    border-radius: 0;
    font-size: 0.96rem;
    min-height: 44px;
    box-sizing: border-box;
  }
}