:root{color-scheme:dark;--bg:#050506;--panel:#101012;--text:#f0f0ed;--muted:#8f9297;--line:rgba(255,255,255,.12);--soft:rgba(255,255,255,.055);--inverse:#0c0d0f}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;background:var(--bg);color:var(--text);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;overflow-x:hidden;transition:background .35s,color .35s}
body[data-theme=light]{color-scheme:light;--bg:#f5f4f0;--panel:#fff;--text:#202225;--muted:#71757a;--line:rgba(16,18,21,.14);--soft:rgba(10,12,14,.045);--inverse:#f7f7f4}
.subscription-grain{position:fixed;inset:0;pointer-events:none;opacity:.16;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.22'/%3E%3C/svg%3E")}
.subscription-orbit{position:fixed;border:1px solid var(--line);border-radius:50%;pointer-events:none;filter:blur(.2px);animation:orbit 20s linear infinite}.subscription-orbit-one{width:680px;height:210px;left:50%;top:22%;transform:translateX(-50%) rotate(-10deg)}.subscription-orbit-two{width:500px;height:500px;right:-230px;bottom:-210px;animation-direction:reverse}
@keyframes orbit{to{transform:translateX(-50%) rotate(350deg)}}.subscription-orbit-two{animation-name:orbitTwo}@keyframes orbitTwo{to{transform:rotate(-360deg)}}
.subscription-topbar{position:fixed;z-index:10;top:0;left:0;right:0;height:76px;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(20px,4vw,64px);background:linear-gradient(180deg,var(--bg),transparent);backdrop-filter:blur(8px)}
.subscription-back,.subscription-tool{display:inline-flex;align-items:center;gap:8px;color:var(--text);text-decoration:none;font-size:.82rem}.subscription-tools{display:flex;gap:10px}.subscription-tool{height:40px;padding:0 13px;border:1px solid var(--line);border-radius:10px;background:var(--soft);cursor:pointer}.subscription-tool svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5}.subscription-theme .icon-moon{display:none}body[data-theme=light] .subscription-theme .icon-sun{display:none}body[data-theme=light] .subscription-theme .icon-moon{display:block}
main{position:relative;z-index:1}.subscription-hero{width:min(780px,calc(100% - 40px));margin:0 auto;padding:150px 0 80px;text-align:center}.subscription-eyebrow{margin:0 0 18px;color:var(--muted);font-size:.7rem;letter-spacing:.24em}.subscription-hero h1{margin:0;font-family:Georgia,"Times New Roman","Songti SC",serif;font-size:clamp(2.05rem,4.8vw,4.6rem);line-height:1.12;font-weight:500;letter-spacing:-.035em}.subscription-hero h1 span{display:inline-block;color:var(--muted);font-size:.76em;white-space:nowrap}
.subscription-arrow{height:104px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:var(--muted)}.subscription-arrow span{height:48px;width:1px;background:linear-gradient(transparent,var(--muted));animation:arrowLine 1.8s ease-in-out infinite}.subscription-arrow i{font-style:normal;font-size:1.1rem;animation:arrowDrop 1.8s ease-in-out infinite}@keyframes arrowLine{50%{height:62px;opacity:1}}@keyframes arrowDrop{50%{transform:translateY(8px);opacity:.45}}
.subscription-qr-stage{position:relative;width:100%;margin:0 auto}.subscription-qr-card{position:relative;z-index:2;width:min(450px,100%);margin:0 auto;padding:16px;border:1px solid var(--line);border-radius:26px;background:linear-gradient(145deg,var(--panel),var(--soft));box-shadow:0 32px 90px rgba(0,0,0,.34);outline:none;transition:border-color .3s ease,transform .3s ease,box-shadow .3s ease}.subscription-qr-card:hover,.subscription-qr-card:focus-visible{border-color:rgba(255,255,255,.27);transform:translateY(-3px);box-shadow:0 36px 96px rgba(0,0,0,.42)}body[data-theme=light] .subscription-qr-card:hover,body[data-theme=light] .subscription-qr-card:focus-visible{border-color:rgba(16,18,21,.28);box-shadow:0 34px 82px rgba(17,19,24,.16)}.subscription-qr-frame{padding:16px;border-radius:18px;background:#fff}.subscription-qr-frame img{display:block;width:100%;height:auto;border-radius:10px}.subscription-qr-card figcaption{display:flex;justify-content:space-between;align-items:center;padding:16px 8px 4px;color:var(--muted);font-size:.72rem;letter-spacing:.08em}.subscription-qr-card figcaption strong{color:var(--text);font-size:.72rem}
.subscription-qr-hover-note{position:absolute;z-index:3;left:calc(50% + 190px);top:42%;width:312px;pointer-events:none;color:var(--text);opacity:0;transform:translate(14px,-50%);transition:opacity .18s ease}.subscription-qr-hover-arrow{position:absolute;right:calc(100% - 42px);bottom:54%;width:126px;height:92px;overflow:visible;fill:none;stroke:currentColor;stroke-width:3.5;stroke-linecap:round;stroke-linejoin:round;opacity:.72;filter:drop-shadow(0 7px 14px rgba(0,0,0,.35))}.subscription-qr-hover-arrow path:first-child{stroke-dasharray:180;stroke-dashoffset:180}.subscription-qr-hover-arrow-head{opacity:0}.subscription-qr-hover-note p{margin:0;padding-left:42px;font-family:Georgia,"Songti SC","STSong",serif;font-size:clamp(1.03rem,1.45vw,1.28rem);font-weight:600;line-height:1.45;letter-spacing:.045em;text-align:left;white-space:nowrap;opacity:0;transform:translate(22px,8px) rotate(-4deg);transform-origin:left center;text-shadow:0 8px 24px rgba(0,0,0,.38)}body[data-theme=light] .subscription-qr-hover-arrow{opacity:.58;filter:drop-shadow(0 6px 12px rgba(17,19,24,.12))}body[data-theme=light] .subscription-qr-hover-note p{text-shadow:0 8px 22px rgba(255,255,255,.65)}.subscription-qr-card:hover+.subscription-qr-hover-note,.subscription-qr-card:focus-visible+.subscription-qr-hover-note{opacity:1}.subscription-qr-card:hover+.subscription-qr-hover-note .subscription-qr-hover-arrow path:first-child,.subscription-qr-card:focus-visible+.subscription-qr-hover-note .subscription-qr-hover-arrow path:first-child{animation:subscriptionQrArrowDraw .72s cubic-bezier(.16,1,.3,1) forwards}.subscription-qr-card:hover+.subscription-qr-hover-note .subscription-qr-hover-arrow-head,.subscription-qr-card:focus-visible+.subscription-qr-hover-note .subscription-qr-hover-arrow-head{animation:subscriptionQrArrowHead .28s .54s ease-out forwards}.subscription-qr-card:hover+.subscription-qr-hover-note p,.subscription-qr-card:focus-visible+.subscription-qr-hover-note p{animation:subscriptionQrNoteReveal .72s .62s cubic-bezier(.16,1,.3,1) forwards}@keyframes subscriptionQrArrowDraw{to{stroke-dashoffset:0}}@keyframes subscriptionQrArrowHead{to{opacity:1}}@keyframes subscriptionQrNoteReveal{0%{opacity:0;transform:translate(22px,8px) rotate(-4deg);filter:blur(5px)}100%{opacity:1;transform:translate(0,0) rotate(-4deg);filter:blur(0)}}
.subscription-copy{margin:44px auto 0;max-width:680px;color:var(--muted);font-size:clamp(.95rem,1.45vw,1.08rem);line-height:2;text-align:left}.subscription-key-link{display:inline-flex;align-items:center;gap:12px;margin-top:30px;padding:13px 18px;border:1px solid var(--line);border-radius:999px;color:var(--text);text-decoration:none;font-size:.84rem;transition:transform .25s,background .25s}.subscription-key-link:hover{transform:translateY(-3px);background:var(--soft)}
.subscription-footer{min-height:260px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:center;gap:24px;padding:50px 20px;background:var(--soft)}.subscription-footer img{width:120px;height:120px;object-fit:contain;border-radius:24px}.subscription-footer div{display:flex;flex-direction:column;align-items:flex-start}.subscription-footer strong{font-size:2rem;letter-spacing:.08em}.subscription-footer span{margin-top:8px;color:var(--muted);font-size:.65rem;letter-spacing:.18em}
@media(max-width:640px){.subscription-hero h1 span{white-space:normal}.subscription-topbar{height:64px}.subscription-tool span,.subscription-back span{display:none}.subscription-hero{padding-top:112px}.subscription-hero h1 br{display:none}.subscription-qr-card figcaption{align-items:flex-start;flex-direction:column;gap:4px}.subscription-copy{text-align:justify;line-height:1.85}.subscription-footer{flex-direction:column}.subscription-footer div{align-items:center}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;scroll-behavior:auto!important}}
/* Subscription page refinement 2026-07-23 */
.subscription-tool{width:40px;height:40px;padding:0;justify-content:center}
.subscription-qr-card{width:min(360px,100%);padding:13px;border-radius:22px;box-shadow:0 28px 72px rgba(0,0,0,.3)}
.subscription-qr-frame{padding:13px;border-radius:16px}
.subscription-qr-frame img{border-radius:8px}
.subscription-qr-card figcaption{padding:13px 6px 3px;font-size:.66rem}
.subscription-qr-card figcaption strong{font-size:.66rem}
.subscription-copy{margin:42px auto 0;max-width:680px;border-top:1px solid var(--line);text-align:left}
.subscription-copy-step{display:grid;grid-template-columns:38px minmax(0,1fr);gap:16px;align-items:start;padding:18px 0;border-bottom:1px solid var(--line)}
.subscription-copy-step>span{padding-top:.26rem;color:var(--muted);font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.62rem;letter-spacing:.12em}
.subscription-copy-step p{margin:0;color:var(--muted);font-size:clamp(.92rem,1.35vw,1.03rem);line-height:1.85}
.subscription-copy-step strong{color:var(--text);font-weight:600}
.subscription-copy-emphasis{color:var(--text);font-weight:750;text-decoration-line:underline;text-decoration-thickness:.1em;text-underline-offset:.24em;text-decoration-color:currentColor}
.subscription-wechat{display:inline-flex;margin:0 .18em;padding:.04em .48em;border:1px solid var(--line);border-radius:999px;background:var(--soft);font-family:ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:.06em}
.subscription-footer{position:relative;isolation:isolate;min-height:250px;overflow:hidden;gap:20px;padding:54px 20px}
.subscription-footer::before{content:"";position:absolute;z-index:-1;width:420px;height:180px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.09),transparent 68%);opacity:.45;filter:blur(18px)}
body[data-theme=light] .subscription-footer::before{background:radial-gradient(circle,rgba(20,22,26,.08),transparent 68%)}
.subscription-footer::after{content:"";position:absolute;top:50%;left:50%;width:min(560px,72vw);height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);transform:translate(-50%,-50%) scaleX(.2);opacity:0}
.subscription-footer img{width:86px;height:86px;border-radius:18px}
.subscription-footer strong{font-size:1.7rem;letter-spacing:.1em}
.subscription-footer span{font-size:.61rem;letter-spacing:.2em}
.subscription-footer.is-reveal-ready img{opacity:0;transform:translateY(20px) scale(.82) rotate(-4deg);filter:blur(10px)}
.subscription-footer.is-reveal-ready div{opacity:0;transform:translateX(24px);filter:blur(8px)}
.subscription-footer.is-visible img{animation:subscriptionLogoReveal 1.05s cubic-bezier(.16,1,.3,1) forwards}
.subscription-footer.is-visible div{animation:subscriptionWordsReveal .9s .22s cubic-bezier(.16,1,.3,1) forwards}
.subscription-footer.is-visible::after{animation:subscriptionLineReveal 1.3s .12s cubic-bezier(.16,1,.3,1) forwards}
.subscription-footer.is-visible::before{animation:subscriptionGlowReveal 1.5s ease-out both}
@keyframes subscriptionLogoReveal{0%{opacity:0;transform:translateY(20px) scale(.82) rotate(-4deg);filter:blur(10px)}58%{opacity:1;transform:translateY(-4px) scale(1.04) rotate(.5deg);filter:blur(0)}100%{opacity:1;transform:none;filter:blur(0)}}
@keyframes subscriptionWordsReveal{from{opacity:0;transform:translateX(24px);filter:blur(8px)}to{opacity:1;transform:none;filter:blur(0)}}
@keyframes subscriptionLineReveal{0%{opacity:0;transform:translate(-50%,-50%) scaleX(.2)}48%{opacity:.9}100%{opacity:.35;transform:translate(-50%,-50%) scaleX(1)}}
@keyframes subscriptionGlowReveal{from{opacity:0;transform:scale(.65)}to{opacity:.55;transform:scale(1)}}
@media(max-width:980px){.subscription-qr-hover-note{left:calc(50% + 172px);width:260px}.subscription-qr-hover-note p{padding-left:30px;font-size:1rem}.subscription-qr-hover-arrow{right:calc(100% - 34px);width:108px}}
@media(max-width:760px),(hover:none){.subscription-qr-hover-note{display:none}}
@media(max-width:640px){.subscription-qr-card{width:min(320px,100%)}.subscription-copy-step{grid-template-columns:30px minmax(0,1fr);gap:10px}.subscription-copy-step p{text-align:left;line-height:1.78}.subscription-footer{min-height:230px;gap:14px}.subscription-footer img{width:76px;height:76px}.subscription-footer strong{font-size:1.5rem}}
@media(prefers-reduced-motion:reduce){.subscription-footer.is-reveal-ready img,.subscription-footer.is-reveal-ready div{opacity:1;transform:none;filter:none}.subscription-footer.is-reveal-ready::after{opacity:.35;transform:translate(-50%,-50%) scaleX(1)}.subscription-qr-card:hover+.subscription-qr-hover-note .subscription-qr-hover-arrow path:first-child,.subscription-qr-card:focus-visible+.subscription-qr-hover-note .subscription-qr-hover-arrow path:first-child{stroke-dashoffset:0}.subscription-qr-card:hover+.subscription-qr-hover-note .subscription-qr-hover-arrow-head,.subscription-qr-card:focus-visible+.subscription-qr-hover-note .subscription-qr-hover-arrow-head,.subscription-qr-card:hover+.subscription-qr-hover-note p,.subscription-qr-card:focus-visible+.subscription-qr-hover-note p{opacity:1;transform:none;filter:none}}