:root{
  --paper:#f4f1ea;--paper2:#ebe5d8;--ink:#1b1d24;--ink2:#3b3e48;--mute:#6f6b63;--line:#dcd3c2;--line2:#e9e2d4;
  --face:#fffdf8;--back:#222637;--back2:#2c3146;--bink:#eceae4;--bmute:#a9adba;
  --rose:#c8364f;--teal:#0e7c86;--gold:#b77d0e;--plum:#6d3b8e;--sea:#2f5fb3;--slate:#3d4357;
  --amber:#f0c25a;
  --kit:linear-gradient(150deg,#c8364f 0%,#8a2f7f 50%,#283c8f 100%);
  --r:18px;
  --sh:0 1px 0 rgba(27,29,36,.05),0 22px 40px -26px rgba(27,29,36,.55);
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",system-ui,sans-serif;
  --mono:ui-monospace,"SFMono-Regular","Cascadia Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;background-color:var(--paper);background-image:radial-gradient(circle at 1px 1px,rgba(27,29,36,.055) 1px,transparent 0);background-size:22px 22px;color:var(--ink);font:16px/1.7 var(--sans);overflow-wrap:break-word}
img,svg{max-width:100%;height:auto}
a{color:var(--teal);text-underline-offset:3px}
a:hover{color:var(--rose)}
:focus-visible{outline:3px solid var(--sea);outline-offset:2px;border-radius:6px}
h1,h2,h3{line-height:1.3;letter-spacing:-.005em}
.bz-skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 14px;z-index:9}
.bz-skip:focus{left:12px;top:12px}

/* 页眉 */
.bz-top{position:relative;z-index:2}
.bz-top-in{max-width:1220px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.bz-logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:900;letter-spacing:.2em;font-size:15px;min-height:44px}
.bz-logo:hover{color:var(--ink)}
.bz-mark{display:block;flex:none}
.bz-nav{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:2px 4px}
.bz-nav a{color:var(--ink2);text-decoration:none;font-size:14px;padding:10px 10px;border-radius:999px;min-height:44px;display:inline-flex;align-items:center}
.bz-nav a:hover,.bz-nav a[aria-current]{background:rgba(27,29,36,.06);color:var(--ink)}

.bz-wrap{max-width:1220px;margin:0 auto;padding:0 20px 56px}

/* 首屏 */
.bz-hero{padding:22px 0 18px;max-width:900px}
.bz-eye{display:flex;flex-wrap:wrap;gap:4px 14px;margin:0 0 10px;font-size:13px;color:var(--mute)}
.bz-eye span:first-child{color:var(--rose);font-weight:700;letter-spacing:.06em}
.bz-eye a{color:inherit}
.bz-hero h1{font-size:clamp(27px,4.1vw,48px);font-weight:900;margin:0 0 10px;line-height:1.18}
.bz-dek{margin:0;color:var(--ink2);font-size:17px;max-width:720px}
.bz-hint{display:flex;align-items:center;gap:10px;margin:14px 0 0;font-size:13.5px;font-weight:700;color:var(--plum)}
.bz-hint i{width:30px;height:20px;border-radius:5px;background:var(--kit);display:inline-block;flex:none;box-shadow:0 6px 10px -6px rgba(109,59,142,.7);animation:bz-wave 3.2s ease-in-out infinite}
@keyframes bz-wave{0%,55%,100%{transform:perspective(80px) rotateY(0)}70%,85%{transform:perspective(80px) rotateY(180deg)}}
.bz-hint-nojs{display:none}
.no-js .bz-hint-js{display:none}
.no-js .bz-hint-nojs{display:inline}

/* 卡组 */
.bz-deck{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:8px;align-items:stretch}
.bz-deck.is-art{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:22px}
.bz-card{position:relative;perspective:1700px;min-width:0}
.bz-in{display:grid;height:100%;transform-style:preserve-3d;transition:transform .62s cubic-bezier(.22,.7,.18,1)}
.bz-face{grid-area:1/1;position:relative;display:flex;flex-direction:column;gap:12px;padding:18px 18px 16px;border-radius:var(--r);-webkit-backface-visibility:hidden;backface-visibility:hidden;min-width:0}
.bz-front{background:var(--face);border:1px solid var(--line);box-shadow:var(--sh)}
.bz-back{background-color:var(--back);background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.028) 0 2px,transparent 2px 11px);color:var(--bink);transform:rotateY(180deg);box-shadow:inset 0 0 0 7px var(--back),inset 0 0 0 8px rgba(255,255,255,.09),var(--sh)}
.js .bz-card[data-side="back"] .bz-in{transform:rotateY(180deg)}
@media (hover:hover) and (pointer:fine){
  .js .bz-card:not(.bz-kit):not(.is-open):not([data-side]):hover .bz-in{transform:rotateY(180deg);transition-delay:.14s}
  .js .bz-card:not([data-side="back"]) .bz-front:hover{border-color:#cdbfa6}
}
.bz-card.is-open .bz-in{transform:none}
.bz-cardtop{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.bz-idx{display:flex;flex-direction:column;line-height:1.1;min-width:0}
.bz-idx b{font:800 24px/1 var(--mono);color:var(--tone,var(--rose));letter-spacing:.02em}
.bz-idx em{font-style:normal;font-size:12px;letter-spacing:.12em;color:var(--mute);margin-top:6px}
.bz-back .bz-idx b{color:var(--amber)}
.bz-back .bz-idx em{color:var(--bmute)}
.bz-pip{position:absolute;right:16px;bottom:12px;font:800 13px/1 var(--mono);color:var(--tone,var(--rose));opacity:.35;transform:rotate(180deg)}
.bz-h2{font-size:19.5px;font-weight:850;margin:0;color:var(--ink)}
.bz-body{display:flex;flex-direction:column;gap:10px;min-width:0}
.bz-body>*{margin:0}
.bz-body p{font-size:15px;color:var(--ink2)}
.bz-back .bz-body p,.bz-back .bz-body li{color:#d9d7d0}
.bz-back .bz-body strong{color:#fff}
.bz-back a{color:#8fd7dd}
.bz-back a:hover{color:#ffd28a}
.bz-body h3{font-size:15.5px;margin:4px 0 0}
.bz-back .bz-body h3{color:#fff}
.bz-body ol,.bz-body ul{padding:0;margin:0;list-style:none;display:flex;flex-direction:column;gap:8px;font-size:14.5px;line-height:1.65}
.bz-body ol{counter-reset:bz}
.bz-body ol>li{position:relative;padding-left:32px;counter-increment:bz}
.bz-body ol>li::before{content:counter(bz);position:absolute;left:0;top:1px;width:23px;height:23px;border-radius:50%;background:var(--tone,var(--rose));color:#fff;font:700 12.5px/23px var(--mono);text-align:center}
.bz-back .bz-body ol>li::before{background:var(--amber);color:var(--back)}
.bz-body ul>li{position:relative;padding-left:18px}
.bz-body ul>li::before{content:"";position:absolute;left:3px;top:.68em;width:7px;height:7px;border-radius:2px;background:var(--tone,var(--rose));transform:rotate(45deg)}
.bz-back .bz-body ul>li::before{background:var(--amber)}
.bz-qa{border-left:3px solid var(--amber);padding:2px 0 2px 12px}
.bz-q{font-size:16px;font-weight:800;margin:0 0 4px;color:#fff}
.bz-a{margin:0;font-size:14.5px;line-height:1.65;color:#e7e3da}
.bz-cost{display:inline-flex;align-items:center;gap:7px;padding:6px 11px;border-radius:999px;background:rgba(240,194,90,.14);color:var(--amber);font-size:12.5px;font-weight:700;line-height:1.3;max-width:62%;text-align:left}
.bz-cost i{flex:none;width:13px;height:13px;border-radius:50%;border:2px solid var(--amber);position:relative}
.bz-cost i::after{content:"";position:absolute;left:4px;top:1px;width:2px;height:5px;background:var(--amber);box-shadow:2px 3px 0 -0px transparent}
.bz-turn{margin-top:auto;align-self:flex-start;display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:0 16px 0 14px;border-radius:999px;border:1px solid var(--line);background:var(--paper);color:var(--ink);font:700 14px/1 var(--sans);cursor:pointer}
.bz-turn i{width:16px;height:16px;border-radius:4px;background:var(--tone,var(--rose));transform:perspective(40px) rotateY(32deg);flex:none}
.bz-turn:hover{border-color:var(--ink2)}
.bz-back .bz-turn{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.16);color:#fff}
.bz-back .bz-turn i{background:var(--amber)}
.no-js .bz-turn{display:none}

/* 卡色 */
.tone-rose{--tone:var(--rose);--t1:#c8364f;--t2:#f6d6dc;--t3:#7e1d31;--tbg:#fbe9ec}
.tone-teal{--tone:var(--teal);--t1:#0e7c86;--t2:#cdeef0;--t3:#0a4e55;--tbg:#e3f4f5}
.tone-gold{--tone:var(--gold);--t1:#d5960f;--t2:#f8e6bb;--t3:#83570a;--tbg:#fbf1da}
.tone-plum{--tone:var(--plum);--t1:#7d45a1;--t2:#e9d9f3;--t3:#4a2464;--tbg:#f3eaf8}
.tone-sea{--tone:var(--sea);--t1:#2f5fb3;--t2:#d8e3f6;--t3:#1b3a72;--tbg:#e8eefa}
.tone-ink{--tone:var(--slate);--t1:#4a5068;--t2:#dcdfe8;--t3:#232736;--tbg:#ebedf2}
.bz-ico{flex:none;display:inline-grid;place-items:center;width:52px;height:52px;border-radius:15px;background:var(--tbg,#fbe9ec);box-shadow:inset 0 -3px 0 rgba(0,0,0,.05)}
.bz-ico svg{width:38px;height:38px}
.bz-ico .i1{fill:var(--t1,#c8364f)}
.bz-ico .i2{fill:var(--t2,#f6d6dc)}
.bz-ico .i3{fill:var(--t3,#7e1d31)}

/* 渐变码卡 */
.bz-kit{--tone:#fff}
.bz-kit .bz-front{background:var(--kit);border:0;color:#fff;box-shadow:0 26px 44px -26px rgba(122,44,110,.85)}
.bz-kit .bz-idx b{color:#fff}
.bz-kit .bz-idx em{color:rgba(255,255,255,.86);font-size:12.5px;letter-spacing:.08em}
.bz-kit .bz-ico{background:rgba(255,255,255,.16);--t1:#fff;--t2:rgba(255,255,255,.55);--t3:#ffd38a}
.bz-kit-code{display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;padding:12px 12px 12px 14px;border-radius:14px;background:rgba(10,12,30,.24);border:1px dashed rgba(255,255,255,.4)}
.bz-kit-k{width:100%;font-size:12px;letter-spacing:.14em;opacity:.85}
.bz-kit-v{font:850 clamp(27px,2.6vw,32px)/1.1 var(--mono);letter-spacing:.12em}
.bz-copy{margin-left:auto;min-height:44px;min-width:76px;padding:0 16px;border-radius:999px;border:1.5px solid #fff;background:transparent;color:#fff;font:700 14px/1 var(--sans);cursor:pointer}
.bz-copy:hover{background:rgba(255,255,255,.14)}
.bz-copy.is-done{background:#fff;color:var(--plum)}
.bz-kit-gain{margin:0;font-size:16px;font-weight:700;line-height:1.5}
.bz-kit-gain sup{font-size:.7em}
.bz-go{display:flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:10px 16px;border-radius:13px;background:#fff;color:var(--ink);font-weight:850;font-size:16px;text-decoration:none;box-shadow:0 10px 18px -12px rgba(0,0,0,.6)}
.bz-go:hover{color:var(--rose)}
.bz-go i{width:18px;height:18px;border-radius:5px;background:var(--kit);flex:none}
.bz-kit-note{margin:0;font-size:12.5px;line-height:1.6;opacity:.95}
.bz-kit-star{margin:0;font-size:11.5px;line-height:1.55;opacity:.82}
.bz-kit .bz-front .bz-turn{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.bz-kit .bz-front .bz-turn i{background:#fff}
.bz-kit .bz-back{box-shadow:inset 0 3px 0 #c8364f,inset 0 0 0 7px var(--back),inset 0 0 0 8px rgba(255,255,255,.09),var(--sh)}
.bz-kit-hint{margin:0;font-size:14px;color:#d9d7d0}
.bz-kit-more{margin:0;font-size:14px}
.bz-kit.is-bare .bz-kit-code{border-style:solid}

/* 界面示意（CSS 画的屏幕）*/
.bz-ui{margin:2px 0 0}
.bz-ui-screen{position:relative;height:196px;overflow:hidden;border-radius:14px;background:#e9e4da;padding:12px 12px 0;box-shadow:inset 0 0 0 1px rgba(27,29,36,.07)}
.bz-ui figcaption{font-size:12.5px;color:var(--mute);margin-top:6px}
.bz-front .bz-body{flex:1}
.bz-front .bz-body>.bz-ui{flex:1;display:flex;flex-direction:column}
.bz-front .bz-ui-screen{flex:1;height:auto;min-height:196px;max-height:380px}
.u-ph,.u-br{position:relative;height:100%;border-radius:14px 14px 0 0;background:#171a22;color:#e8e9ee;overflow:hidden;box-shadow:0 14px 26px -14px rgba(0,0,0,.6);font-size:12px;line-height:1.45}
.u-ph{max-width:236px;margin:0 auto;border:5px solid #0b0d12;border-bottom:0;border-radius:22px 22px 0 0}
.u-br{border:1px solid #0b0d12;border-bottom:0}
.u-sb{display:flex;justify-content:space-between;align-items:center;padding:6px 12px 2px;font:600 10.5px/1 var(--sans);color:#cfd3dc}
.u-sb-r{display:flex;gap:4px;align-items:center}
.u-sig{width:12px;height:8px;background:linear-gradient(90deg,#cfd3dc 0 2px,transparent 2px 3px,#cfd3dc 3px 5px,transparent 5px 6px,#cfd3dc 6px 8px,transparent 8px 9px,#cfd3dc 9px 11px);clip-path:polygon(0 100%,100% 0,100% 100%)}
.u-wifi{width:10px;height:7px;border-radius:10px 10px 2px 2px;background:#cfd3dc;clip-path:polygon(50% 100%,0 15%,100% 15%)}
.u-bat{width:16px;height:8px;border-radius:2px;border:1.5px solid #cfd3dc;position:relative}
.u-bat::after{content:"";position:absolute;inset:1px 4px 1px 1px;background:#8de0a6;border-radius:1px}
.u-br-bar{display:flex;align-items:center;gap:5px;padding:7px 9px;background:#0f1117;border-bottom:1px solid #262a36}
.u-br-bar>i{width:7px;height:7px;border-radius:50%;background:#3a3f4f}
.u-br-bar>i:first-child{background:#e86a5c}.u-br-bar>i:nth-child(2){background:#e7b84d}.u-br-bar>i:nth-child(3){background:#5bbf7a}
.u-url{margin-left:6px;flex:1;min-width:0;display:flex;align-items:center;gap:6px;padding:3px 9px;border-radius:999px;background:#1d212c;color:#c9ced8;font:11px/1.3 var(--mono);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.u-lockico{flex:none;width:8px;height:9px;border-radius:2px;background:#7fd19c;position:relative;margin-top:2px}
.u-lockico::before{content:"";position:absolute;left:1.5px;top:-4px;width:5px;height:5px;border:1.5px solid #7fd19c;border-bottom:0;border-radius:4px 4px 0 0;box-sizing:border-box}
.u-pad{padding:10px 12px;display:flex;flex-direction:column;gap:8px}
.u-h{margin:0;font-size:15px;font-weight:800;color:#fff;display:flex;align-items:center;gap:8px}
.u-back{width:8px;height:8px;border-left:2px solid #cfd3dc;border-bottom:2px solid #cfd3dc;transform:rotate(45deg);margin-right:2px}
.u-in{display:flex;flex-direction:column;gap:4px}
.u-lab{font-size:10.5px;color:#9aa1b2}
.u-box{display:block;padding:7px 9px;border-radius:7px;background:#232734;border:1px solid #343a4b;color:#e8e9ee;font-size:12px}
.u-dots{letter-spacing:.2em}
.u-btn{display:flex;align-items:center;justify-content:center;min-height:30px;padding:0 12px;border-radius:7px;background:#e7b84d;color:#1b1d24;font-weight:800;font-size:12.5px}
.u-btn.is-dim{opacity:.4}
.u-btn.is-ghost{background:#2a2f3d;color:#e8e9ee}
.u-btn.is-danger{background:#e2565b;color:#fff}
.u-link{margin:0;color:#e7b84d;font-size:12px;font-weight:700;align-self:flex-start}
.is-hl{position:relative;outline:2px solid #ff7a8f;outline-offset:3px;border-radius:7px;animation:u-pulse 2.4s ease-in-out infinite}
@keyframes u-pulse{0%,100%{outline-color:#ff7a8f}50%{outline-color:rgba(255,122,143,.25)}}
.u-toast{display:flex;align-items:center;gap:7px;padding:7px 9px;border-radius:8px;font-size:11.5px;font-weight:700}
.u-toast.is-err{background:#3b1f27;color:#ffb4bf;border:1px solid #6b2a39}
.u-x{flex:none;width:14px;height:14px;border-radius:50%;background:#e2565b;position:relative}
.u-x::before,.u-x::after{content:"";position:absolute;left:6px;top:3px;width:2px;height:8px;background:#fff;border-radius:1px;transform:rotate(45deg)}
.u-x::after{transform:rotate(-45deg)}
.u-sheet{position:absolute;left:0;right:0;bottom:0;padding:8px 14px 14px;background:#232734;border-radius:16px 16px 0 0;display:flex;flex-direction:column;gap:7px;box-shadow:0 -10px 20px -8px rgba(0,0,0,.6)}
.u-sheet.is-sys{background:#2d3140}
.u-grab{align-self:center;width:34px;height:4px;border-radius:4px;background:#4a5064}
.u-sk{display:block;height:7px;border-radius:5px;background:#353a4a}
.u-sk.is-h{height:11px;background:#4a5064}
.w50{width:50%}.w60{width:60%}.w70{width:70%}.w80{width:80%}
.is-dimbg>.u-pad{opacity:.45}
.u-tag{position:absolute;right:10px;top:34px;z-index:3;padding:5px 10px 5px 9px;border-radius:8px 8px 8px 2px;background:#fff6d9;color:#7a4f00;font:800 11.5px/1.2 var(--sans);box-shadow:0 8px 14px -8px rgba(0,0,0,.5);transform:rotate(3deg)}
.u-tag.is-low{top:auto;bottom:18px;transform:rotate(-2deg)}
.u-otp{display:grid;grid-template-columns:repeat(6,1fr);gap:5px}
.u-otp b{height:30px;border-radius:7px;background:#232734;border:1px solid #343a4b;display:grid;place-items:center;font:800 14px/1 var(--mono);color:#fff}
.u-otp.is-err b{border-color:#e2565b}
.u-otp b.is-cur{border-color:#e7b84d;box-shadow:inset 0 -2px 0 #e7b84d}
.u-err{margin:-2px 0 0;color:#ff8f9f;font-size:11.5px;font-weight:700}
.u-row{display:flex;align-items:center;gap:9px;padding:8px 9px;border-radius:8px;background:#1f2330;border:1px solid #2b3040;font-size:12px}
.u-row span{flex:1;min-width:0}
.u-row.is-btnrow{background:none;border:0;padding:0}
.u-row.is-on{border-color:#5a4a1c;background:#272519}
.u-row.is-muted{opacity:.55}
.u-dot{flex:none;width:10px;height:10px;border-radius:50%;border:2px solid #6b7287}
.u-dot.is-ok{border-color:#5bbf7a;background:#5bbf7a}
.u-ok{font-style:normal;color:#7fd19c;font-size:10.5px}
.u-chev{width:7px;height:7px;border-right:2px solid #6b7287;border-top:2px solid #6b7287;transform:rotate(45deg);flex:none}
.u-edit{flex:none;width:12px;height:12px;border-radius:2px;background:linear-gradient(135deg,transparent 0 40%,#e7b84d 40% 60%,transparent 60%);border:1.5px solid #6b7287}
.u-chk{flex:none;width:14px;height:14px;border-radius:4px;border:2px solid #6b7287}
.u-chk.is-on{background:#e7b84d;border-color:#e7b84d;position:relative}
.u-chk.is-on::after{content:"";position:absolute;left:3px;top:0;width:4px;height:7px;border:2px solid #1b1d24;border-top:0;border-left:0;transform:rotate(45deg)}
.u-pill{margin-left:auto;padding:3px 8px;border-radius:999px;background:#3a3218;color:#f0c25a;font-size:10.5px;font-weight:700}
.u-ico{flex:none;width:18px;height:18px;border-radius:6px;background:#2f3546;position:relative}
.u-ico::after{content:"";position:absolute;inset:4px;border-radius:2px;background:#9aa1b2}
.u-ico.is-phone::after{inset:3px 5px;border-radius:2px}
.u-ico.is-mail::after{inset:5px 3px;border-radius:1px;background:linear-gradient(160deg,#9aa1b2 0 48%,#c9ced8 48% 52%,#9aa1b2 52%)}
.u-ico.is-key::after{inset:5px;border-radius:50%}
.u-ico.is-gear::after{inset:4px;border-radius:50%;background:radial-gradient(circle,#2f3546 0 2px,#9aa1b2 2.5px)}
.u-fp{align-self:center;width:46px;height:46px;border-radius:50%;background:radial-gradient(circle,transparent 0 6px,#e7b84d 6px 8px,transparent 8px 11px,#e7b84d 11px 13px,transparent 13px 16px,#e7b84d 16px 18px,transparent 18px);opacity:.9}
.u-float{position:absolute;left:50%;bottom:12px;transform:translateX(-50%);margin:0;white-space:nowrap;color:#e7b84d;font-size:12px;font-weight:800;padding:2px 6px}
.u-two{display:flex;align-items:flex-end;justify-content:center;gap:8px;height:100%}
.u-two .u-ph{flex:1;max-width:150px;margin:0}
.u-ph.is-mini{border-width:4px}
.u-ph.is-new{border-color:#2a2116}
.u-arrow{flex:none;align-self:center;width:24px;height:12px;background:#c8364f;clip-path:polygon(0 35%,60% 35%,60% 0,100% 50%,60% 100%,60% 65%,0 65%)}
.u-auth{position:relative;padding:8px;border-radius:8px;background:#1f2330;border:1px solid #2b3040}
.u-auth-n{display:block;font-size:10px;color:#9aa1b2}
.u-auth-c{display:block;font:800 16px/1.3 var(--mono);color:#fff;letter-spacing:.06em}
.u-ring{position:absolute;right:8px;top:12px;width:14px;height:14px;border-radius:50%;background:conic-gradient(#e7b84d 0 70%,#343a4b 70%)}
.u-swipe{display:flex;gap:4px}
.u-swipe span{flex:1;text-align:center;padding:5px 0;border-radius:6px;background:#2a2f3d;font-size:10.5px}
.u-swipe span.is-hl{background:#e7b84d;color:#1b1d24;font-weight:800}
.u-qr{align-self:center;display:grid;grid-template-columns:repeat(4,12px);gap:3px;padding:6px;background:#fff;border-radius:6px}
.u-qr i{width:12px;height:12px;background:#171a22;border-radius:2px}
.u-qr i:nth-child(3n+2){background:transparent}
.u-qr i:nth-child(1),.u-qr i:nth-child(4),.u-qr i:nth-child(13){background:#171a22;box-shadow:inset 0 0 0 3px #fff,inset 0 0 0 5px #171a22}
.u-opt{display:grid;grid-template-columns:1fr auto;gap:2px 8px;align-items:center;padding:8px 10px;border-radius:9px;background:#1f2330;border:1px solid #2b3040}
.u-opt b{font-size:12.5px;color:#fff}
.u-opt span{grid-column:1;font-size:10.5px;color:#9aa1b2;line-height:1.4}
.u-opt .u-chev{grid-column:2;grid-row:1/3}
.u-padlock{align-self:center;width:30px;height:24px;border-radius:6px;background:#e7b84d;position:relative;margin-top:10px}
.u-padlock::before{content:"";position:absolute;left:6px;top:-11px;width:18px;height:14px;border:3px solid #e7b84d;border-bottom:0;border-radius:10px 10px 0 0;box-sizing:border-box}

/* 底部注册六步 */
.bz-strip{margin-top:46px;padding:26px 22px 24px;border-radius:24px;background:var(--face);border:1px solid var(--line);box-shadow:var(--sh)}
.bz-strip-head{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.bz-strip-head .bz-ico{--tbg:#efe7f6;--t1:#7d45a1;--t2:#d9c6ea;--t3:#c8364f}
.bz-strip-h{font-size:clamp(21px,2.4vw,26px);font-weight:900;margin:0}
.bz-strip-head p{margin:4px 0 0;color:var(--ink2);font-size:15px}
.bz-steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.bz-steps li{position:relative;display:flex;flex-direction:column;gap:4px;padding:14px 14px 14px;border-radius:14px;background:var(--paper);border:1px solid var(--line2);min-width:0}
.bz-step-no{font:850 26px/1 var(--mono);color:var(--rose)}
.bz-steps li:nth-child(2) .bz-step-no{color:var(--plum)}.bz-steps li:nth-child(3) .bz-step-no{color:var(--sea)}.bz-steps li:nth-child(4) .bz-step-no{color:var(--teal)}.bz-steps li:nth-child(5) .bz-step-no{color:var(--gold)}.bz-steps li:nth-child(6) .bz-step-no{color:var(--slate)}
.bz-step-n{font-size:16px}
.bz-step-t{font-size:14px;color:var(--ink2);line-height:1.6}

/* 依据、作者、尾部 */
.bz-tail{margin-top:22px}
.bz-basis{display:grid;grid-template-columns:auto 1fr;gap:6px 18px;padding:16px 18px;border-radius:16px;border:1.5px dashed var(--line);background:rgba(255,253,248,.7);font-size:14.5px;color:var(--ink2)}
.bz-basis-k{font-weight:800;color:var(--ink);font-size:13px;letter-spacing:.06em;padding-top:2px}
.bz-basis .bz-body p{font-size:14.5px}
.bz-author{margin-top:26px}
.bz-author-card{max-width:780px;padding:18px 20px;border-radius:16px;background:var(--face);border:1px solid var(--line)}
.bz-author-card p{margin:0 0 8px;font-size:14.5px;color:var(--ink2)}
.bz-author-n{display:flex;gap:10px;align-items:baseline}
.bz-author-n b{font-size:16px;color:var(--ink)}
.bz-author-n span{font-size:13px;color:var(--mute)}
.bz-author-l{display:flex;flex-wrap:wrap;gap:4px 16px;margin:0!important}
.bz-author-l a{display:inline-flex;align-items:center;min-height:44px}

.bz-sec-head{display:flex;align-items:baseline;gap:12px;margin:40px 0 14px}
.bz-sec-k{font-size:12.5px;letter-spacing:.12em;color:var(--rose);font-weight:800}
.bz-sec-head h2{margin:0;font-size:22px}
.bz-more{margin:12px 0 0}
.bz-more a{display:inline-flex;align-items:center;min-height:44px;font-weight:700}

/* 卡堆（列表）*/
.bz-stacks{list-style:none;margin:8px 0 0;padding:14px 10px 0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px 26px}
.bz-stack{position:relative;min-width:0}
.bz-stack::before,.bz-stack::after{content:"";position:absolute;inset:0;border-radius:var(--r);background:var(--face);border:1px solid var(--line)}
.bz-stack::before{transform:rotate(-4deg) translate(-7px,9px);background:#e6dfd0;border-color:#d3c8b3}
.bz-stack::after{transform:rotate(2.6deg) translate(7px,5px);background:#f3eee3}
.bz-stack.is-tall::before{background-color:var(--back);background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.05) 0 2px,transparent 2px 10px);border-color:var(--back);transform:rotate(-5deg) translate(-9px,11px)}
.bz-stack-a{position:relative;z-index:1;display:flex;flex-direction:column;gap:8px;height:100%;padding:18px;border-radius:var(--r);background:var(--face);border:1px solid var(--line);box-shadow:var(--sh);color:var(--ink);text-decoration:none;transition:transform .2s}
.bz-stack-a:hover{transform:translateY(-4px) rotate(-.6deg);color:var(--ink)}
.bz-stack-top{display:flex;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--mute)}
.bz-stack-top b{font:800 20px/1 var(--mono);color:var(--rose)}
.bz-stack-top em{font-style:normal;padding:3px 9px;border-radius:999px;background:var(--paper);border:1px solid var(--line2)}
.bz-stack-t{font-size:17.5px;line-height:1.4}
.bz-stack-d{font-size:14px;color:var(--ink2);line-height:1.65}
.bz-stack-f{margin-top:auto;display:flex;justify-content:space-between;font-size:12.5px;color:var(--mute)}
.bz-stack-f i{font-style:normal;color:var(--teal);font-weight:700}
.bz-pager{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px 18px;margin-top:34px;font-size:14.5px}
.bz-pg-a{display:inline-flex;align-items:center;min-height:44px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:var(--face);color:var(--ink);text-decoration:none;font-weight:700}
.bz-pg-a.is-off{opacity:.4}
.bz-pg-at{color:var(--mute)}
.bz-intro{max-width:760px;color:var(--ink2);font-size:16px}
.bz-intro p{margin:0}
.bz-hero-list{padding-bottom:8px}
.bz-hero-list.is-term{display:grid;grid-template-columns:auto 1fr;gap:0 18px;align-items:start}
.bz-hero-list.is-term>*:not(.bz-term-badge){grid-column:2}
.bz-term-badge{grid-row:1/5}
.bz-term-badge .bz-ico{width:72px;height:72px;border-radius:20px}
.bz-term-badge .bz-ico svg{width:52px;height:52px}
.bz-suits{list-style:none;margin:18px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.bz-suits a{display:flex;flex-direction:column;gap:8px;height:100%;padding:18px;border-radius:var(--r);background:var(--face);border:1px solid var(--line);box-shadow:var(--sh);color:var(--ink);text-decoration:none}
.bz-suits b{font-size:17px}
.bz-suits span{font-size:14px;color:var(--ink2)}
.bz-suits em{margin-top:auto;font-style:normal;font-size:13px;color:var(--rose);font-weight:700}

/* 面包屑 */
.bz-crumbs{list-style:none;display:flex;flex-wrap:wrap;gap:2px 0;margin:6px 0 0;padding:0;font-size:13px;color:var(--mute)}
.bz-crumbs li+li::before{content:"/";margin:0 8px;color:var(--line)}
.bz-crumbs a{color:var(--mute);display:inline-flex;align-items:center;min-height:44px}

/* 文章页 */
.bz-hero-art{max-width:860px}
.bz-answer{margin-top:16px;padding:14px 16px;border-radius:14px;background:var(--back);color:var(--bink);max-width:760px;box-shadow:var(--sh)}
.bz-answer-k{display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--amber);font-weight:800;margin-bottom:4px}
.bz-answer p{margin:0;font-size:15.5px}
.bz-fanidx{margin:6px 0 4px;max-width:960px}
.bz-fanidx-h{margin:0 0 8px;font-size:13px;color:var(--mute);letter-spacing:.06em}
.bz-fanidx ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.bz-fanidx a{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 14px 0 10px;border-radius:12px;background:var(--face);border:1px solid var(--line);color:var(--ink);text-decoration:none;font-size:14px;max-width:100%}
.bz-fanidx a span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bz-fanidx b{font:800 13px/1 var(--mono);color:var(--rose)}
.bz-cover{margin:18px 0 0;max-width:960px}
.bz-cover img{display:block;width:100%;border-radius:var(--r);border:1px solid var(--line)}
.bz-cover figcaption,.bz-fig figcaption,.bz-shot figcaption{font-size:12.5px;color:var(--mute);margin-top:6px}
.bz-prose{max-width:760px;font-size:16.5px}
.bz-prose>*{margin:0 0 14px}
.bz-prose h2{font-size:22px;margin-top:28px}
.bz-prose h3{font-size:18px;margin-top:22px}
.bz-prose ul,.bz-prose ol{padding-left:1.3em}
.bz-prose li{margin:4px 0}
.bz-lead{margin-top:16px}
.bz-minis{margin-top:38px}
.bz-minis-h{font-size:22px;margin:0 0 14px}
.bz-minis-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.bz-mini{padding:16px 18px;border-radius:16px;background:var(--face);border:1px solid var(--line);box-shadow:var(--sh)}
.bz-mini-q{margin:0 0 8px;font-size:16px;padding-bottom:8px;border-bottom:1.5px dashed var(--line)}
.bz-mini-a{margin:0;font-size:15px;color:var(--ink2)}
.bz-tags{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:28px;font-size:14px}
.bz-tags-h{color:var(--mute);margin-right:4px}
.bz-tags a,.bz-tag-plain{display:inline-flex;align-items:center;min-height:36px;padding:0 12px;border-radius:999px;border:1px solid var(--line);background:var(--face);color:var(--ink);text-decoration:none}
.bz-tag-plain{border-style:dashed;color:var(--mute);background:transparent}

/* 正文小部件 */
.bz-note{padding:12px 14px;border-radius:12px;border:1px solid;font-size:14.5px}
.bz-note .bz-body p{font-size:14.5px}
.bz-note-t{display:block;margin-bottom:4px;font-size:14px}
.bz-note.is-tip{background:#e7f4f4;border-color:#bfe1e2;color:#0b4f55}
.bz-note.is-warn{background:#fbf1da;border-color:#ecd49c;color:#6d4a07}
.bz-note.is-stop{background:#fbe9ec;border-color:#efbcc6;color:#7e1d31}
.bz-note.is-ok{background:#e8f4ea;border-color:#bfdfc6;color:#1f5a2c}
.bz-note .bz-body p,.bz-note .bz-body li{color:inherit}
.bz-back .bz-note{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.14);color:#e7e3da}
.bz-back .bz-note.is-stop{border-color:rgba(255,122,143,.5)}
.bz-back .bz-note.is-warn{border-color:rgba(240,194,90,.5)}
.bz-state{border-radius:14px;overflow:hidden;border:1px solid var(--line)}
.bz-state-say{padding:10px 14px;background:#1d2130;color:#ffd1d8}
.bz-state-say p{margin:2px 0 0;font-size:14.5px;font-weight:700;color:#ffd1d8!important}
.bz-state-do{padding:10px 14px;background:var(--face)}
.bz-state-k{font-size:11.5px;letter-spacing:.12em;font-weight:800;opacity:.8}
.bz-back .bz-state{border-color:rgba(255,255,255,.14)}
.bz-back .bz-state-do{background:rgba(255,255,255,.05)}
.bz-shot,.bz-fig{margin:0}
.bz-shot-frame{border-radius:12px;overflow:hidden;border:1px solid var(--line);background:#fff}
.bz-shot-bar{display:flex;align-items:center;gap:5px;padding:7px 10px;background:var(--paper2)}
.bz-shot-bar i{width:8px;height:8px;border-radius:50%;background:#cfc6b4}
.bz-shot-bar em{margin-left:8px;font-style:normal;font:12px var(--mono);color:var(--mute)}
.bz-shot img,.bz-fig img{display:block;width:100%}
.bz-shot.is-phone .bz-shot-frame{max-width:300px;border:6px solid #15171d;border-radius:24px}
.bz-pair{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:start}
.bz-tbl{overflow-x:auto;border-radius:12px;border:1px solid var(--line);background:var(--face)}
.bz-tbl table{border-collapse:collapse;width:100%;font-size:14px}
.bz-tbl th,.bz-tbl td{padding:9px 12px;border-bottom:1px solid var(--line2);text-align:left;vertical-align:top}
.bz-tbl th{background:var(--paper2);font-size:13px}
.bz-back .bz-tbl{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.14)}
.bz-back .bz-tbl th{background:rgba(255,255,255,.08);color:#fff}
.bz-back .bz-tbl td{border-color:rgba(255,255,255,.1);color:#e7e3da}

/* 站务页：一张大卡 */
.bz-plainpage{max-width:900px}
.bz-sheet{position:relative;margin-top:8px;padding:26px 30px 34px;border-radius:24px;background:var(--face);border:1px solid var(--line);box-shadow:var(--sh)}
.bz-sheet-top{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:8px}
.bz-sheet-top .bz-idx b{font:800 15px/1.2 var(--sans);letter-spacing:.14em;color:var(--rose)}
.bz-sheet h1{font-size:clamp(26px,3.4vw,38px);font-weight:900;margin:6px 0 10px}
.bz-sheet .bz-dek{margin-bottom:18px}
.bz-prose-plain{max-width:none}
.bz-prose-plain h2{font-size:21px;margin:26px 0 10px;padding-top:16px;border-top:1.5px dashed var(--line)}
.bz-prose-plain h3{font-size:17px}

/* 404 */
.bz-404-pair{display:grid;grid-template-columns:260px 1fr;gap:28px;align-items:start;margin-top:24px}
.bz-404-back{aspect-ratio:5/7;border-radius:var(--r);background-color:var(--back);background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.04) 0 2px,transparent 2px 11px);box-shadow:inset 0 0 0 9px var(--back),inset 0 0 0 10px rgba(255,255,255,.12),var(--sh);display:grid;place-items:center;transform:rotate(-5deg)}
.bz-404-back span{font:900 54px/1 var(--mono);color:var(--amber);letter-spacing:.06em}
.bz-404-front{margin:0}
.bz-404-links{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.bz-404-links a{display:flex;flex-direction:column;gap:2px;padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:var(--paper);text-decoration:none;color:var(--ink);min-height:44px}
.bz-404-links span{font-size:13px;color:var(--mute);line-height:1.5}

/* 页脚 */
.bz-foot{background:var(--back);color:#d6d4cd;margin-top:30px}
.bz-foot-in{max-width:1220px;margin:0 auto;padding:34px 20px 28px;display:grid;grid-template-columns:1.4fr 1fr;gap:20px 40px}
.bz-foot p{margin:0 0 10px;font-size:14px;line-height:1.75}
.bz-foot a{color:#9ad7dd}
.bz-logo-foot{color:#fff;margin-bottom:8px}
.bz-logo-foot:hover{color:#fff}
.bz-foot-risk{color:#b9b7b0}
.bz-foot-links{display:grid;grid-template-columns:1fr 1fr;align-content:start;gap:0 18px}
.bz-foot-links a{display:inline-flex;align-items:center;min-height:44px;color:#e9e7e1;text-decoration:none;font-size:14px}
.bz-foot-links a:hover{color:#ffd28a}
.bz-foot-c{grid-column:1/-1;border-top:1px solid rgba(255,255,255,.1);padding-top:14px;font-size:13px;color:#a9adba}

/* 无 JS、打印：两面摊开并排 */
.no-js .bz-deck{grid-template-columns:minmax(0,1fr);max-width:1120px}
.no-js .bz-in{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;transform:none!important}
.no-js .bz-face{-webkit-backface-visibility:visible;backface-visibility:visible}
.no-js .bz-back{grid-area:1/2;transform:none}
.no-js .bz-card.is-open .bz-in{grid-template-columns:minmax(0,1fr)}
@media print{
  body{background:#fff}
  .bz-top,.bz-foot-links,.bz-turn,.bz-hint{display:none}
  .bz-deck{grid-template-columns:minmax(0,1fr)}
  .bz-in{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;transform:none!important}
  .bz-face{backface-visibility:visible}
  .bz-back{grid-area:1/2;transform:none}
  .bz-card{break-inside:avoid}
}
@media (prefers-reduced-motion:reduce){
  .bz-in{transition:none}
  .bz-hint i,.is-hl{animation:none}
}

/* 宽度档 */
@media (max-width:1100px){
  .bz-deck{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bz-stacks{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bz-suits{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .bz-deck.is-art{grid-template-columns:minmax(0,1fr)}
  .bz-steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bz-foot-in{grid-template-columns:1fr}
  .bz-404-pair{grid-template-columns:1fr}
  .bz-404-back{width:180px;margin:0 auto}
}
@media (max-width:700px){
  .bz-deck{grid-template-columns:minmax(0,1fr);gap:16px}
  .no-js .bz-in{grid-template-columns:minmax(0,1fr)}
  .no-js .bz-back{grid-area:2/1}
  .bz-stacks{grid-template-columns:minmax(0,1fr);padding:10px 8px 0}
  .bz-minis-grid,.bz-pair,.bz-404-links{grid-template-columns:minmax(0,1fr)}
  .bz-basis{grid-template-columns:1fr}
  .bz-sheet{padding:20px 18px 26px;border-radius:20px}
  .bz-tbl[data-cols="3"],.bz-tbl[data-cols="4"],.bz-tbl[data-cols="5"],.bz-tbl[data-cols="6"]{border:0;background:none;overflow:visible}
  .bz-tbl[data-cols="3"] thead,.bz-tbl[data-cols="4"] thead,.bz-tbl[data-cols="5"] thead,.bz-tbl[data-cols="6"] thead{display:none}
  .bz-tbl[data-cols="3"] tr,.bz-tbl[data-cols="4"] tr,.bz-tbl[data-cols="5"] tr,.bz-tbl[data-cols="6"] tr{display:block;margin-bottom:10px;border:1px solid var(--line);border-radius:12px;background:var(--face);padding:6px 0}
  .bz-tbl[data-cols="3"] td,.bz-tbl[data-cols="4"] td,.bz-tbl[data-cols="5"] td,.bz-tbl[data-cols="6"] td{display:block;border:0;padding:5px 12px}
  .bz-tbl td[data-th]::before{content:attr(data-th);display:block;font-size:11.5px;color:var(--mute);letter-spacing:.06em}
}
@media (max-width:520px){
  .bz-top-in{padding:6px 14px 0;flex-wrap:wrap;row-gap:0}
  .bz-logo span{letter-spacing:.14em}
  .bz-nav{flex-wrap:nowrap;justify-content:flex-start;overflow-x:auto;scrollbar-width:none;margin:0 -7px;width:calc(100% + 14px)}
  .bz-nav::-webkit-scrollbar{display:none}
  .bz-nav a{padding:6px 9px;font-size:13.5px;white-space:nowrap;min-height:44px}
  .bz-wrap{padding:0 14px 44px}
  .bz-hero{padding:10px 0 12px}
  .bz-hero h1{font-size:25px;margin-bottom:6px}
  .bz-dek{font-size:15px;line-height:1.6}
  .bz-eye{font-size:12px;margin-bottom:6px}
  .bz-hint{margin-top:8px;font-size:12.5px}
  .bz-face{padding:15px 15px 14px;gap:10px}
  .bz-kit .bz-face{gap:9px}
  .bz-kit-code{padding:9px 10px 10px 12px}
  .bz-h2{font-size:18px}
  .bz-ico{width:46px;height:46px;border-radius:13px}
  .bz-ico svg{width:34px;height:34px}
  .bz-strip{padding:18px 14px;border-radius:18px}
  .bz-steps{grid-template-columns:minmax(0,1fr);gap:8px}
  .bz-steps li{display:grid;grid-template-columns:auto 1fr;gap:2px 12px;align-items:baseline}
  .bz-step-t{grid-column:2}
  .bz-ui-screen{height:184px;padding:10px 8px 0}
  .bz-foot-links{grid-template-columns:1fr}
  .bz-term-badge .bz-ico{width:56px;height:56px}
}
@media (max-width:360px){
  .bz-hero{padding:6px 0 8px}
  .bz-hero h1{font-size:22px}
  .bz-dek{font-size:14px;line-height:1.55}
  .bz-hint{margin-top:6px}
  .bz-kit .bz-face{gap:7px}
  .bz-kit-gain{font-size:15px}
  .bz-go{min-height:46px}
  .bz-kit-v{font-size:24px;letter-spacing:.08em}
  .bz-copy{min-width:64px;padding:0 12px}
  .bz-nav a{font-size:12.5px;padding:6px 7px}
}