/* ============================================================
   闪缘小栈 官网设计系统  v1.0
   方向 A · 玫瑰暖调 #E11D48（品牌延续）+ 图鸟点缀 #FBBD12/#00FFC6
   纯 CSS，零依赖；动效仅用 transform/opacity 保证合成层性能
   ============================================================ */
:root{
  --rose:#E11D48; --rose-deep:#9F1239; --rose-2:#F43F5E;
  --gold:#FBBD12; --teal:#00FFC6;
  --ink:#1F2430; --ink-2:#6B7280; --line:#EDE7E7;
  --bg:#FAF8F7; --bg-rose:#FFF1F3; --card:#FFFFFF;
  --grad-main:linear-gradient(135deg,#C2103D 0%,#E11D48 48%,#F43F5E 100%);
  --grad-cta:linear-gradient(135deg,#E11D48 0%,#FBBD12 120%);
  --sh-sm:0 6px 18px rgba(31,36,48,.08);
  --sh-rose:0 16px 34px rgba(225,29,72,.20);
  --r:16px; --header-h:72px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  background:var(--bg);color:var(--ink);font-size:15px;line-height:1.75;padding-top:var(--header-h);}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;}
button{font-family:inherit;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section.tight{padding:56px 0;}
@media(max-width:767px){.section{padding:56px 0;}}

/* ---------- 区块标题 ---------- */
.sec-head{text-align:center;max-width:640px;margin:0 auto 46px;}
.sec-head .kicker{display:inline-block;font-size:12.5px;letter-spacing:3px;color:var(--rose);
  background:var(--bg-rose);border:1px solid #FECDD3;padding:3px 16px;border-radius:999px;margin-bottom:14px;}
.sec-head h2{font-size:28px;font-weight:800;line-height:1.4;}
.sec-head p{color:var(--ink-2);margin-top:8px;font-size:14.5px;}
.sec-head.left{text-align:left;margin-left:0;}
.sec-head h2 em{font-style:normal;background:linear-gradient(90deg,var(--rose),var(--rose-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;}

/* ---------- 按钮 ---------- */
.btn{position:relative;overflow:hidden;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:none;cursor:pointer;border-radius:999px;padding:13px 30px;font-size:15px;font-weight:600;
  transition:transform .25s,box-shadow .25s;user-select:none;}
.btn:hover{transform:translateY(-2px);}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--grad-main);color:#fff;box-shadow:0 10px 24px rgba(225,29,72,.32);}
.btn-gold{background:var(--grad-cta);color:#fff;box-shadow:0 10px 24px rgba(225,29,72,.28);}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.55);backdrop-filter:blur(4px);}
.btn-outline{background:#fff;color:var(--rose);border:1.5px solid var(--rose);}
.btn-lg{padding:16px 40px;font-size:16px;}
.btn-shine::after{content:"";position:absolute;top:0;left:-70%;width:50%;height:100%;
  background:linear-gradient(105deg,transparent,rgba(255,255,255,.5),transparent);transform:skewX(-20deg);transition:left .55s ease;}
.btn-shine:hover::after{left:130%;}
.ripple{position:absolute;border-radius:50%;background:rgba(255,255,255,.45);transform:scale(0);
  animation:rip .55s ease-out forwards;pointer-events:none;}
@keyframes rip{to{transform:scale(3.2);opacity:0;}}

/* ---------- 顶部导航 ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--header-h);
  background:rgba(255,255,255,.82);backdrop-filter:blur(12px);border-bottom:1px solid rgba(237,231,231,.8);
  transition:height .3s,box-shadow .3s;}
.site-header.shrink{height:56px;box-shadow:0 6px 20px rgba(31,36,48,.08);}
.site-header .bar{height:100%;display:flex;align-items:center;gap:20px;}
.logo{display:flex;align-items:center;gap:8px;font-size:19px;font-weight:800;color:var(--rose-deep);white-space:nowrap;}
.logo .heart{width:30px;height:30px;border-radius:9px;background:var(--grad-main);display:inline-flex;
  align-items:center;justify-content:center;color:#fff;font-size:15px;box-shadow:0 4px 10px rgba(225,29,72,.35);}
.main-nav{display:flex;gap:6px;margin-left:auto;}
.main-nav a{padding:8px 14px;border-radius:999px;font-size:14.5px;color:var(--ink);transition:.25s;white-space:nowrap;}
.main-nav a:hover{color:var(--rose);background:var(--bg-rose);}
.main-nav a.active{color:var(--rose);background:var(--bg-rose);font-weight:700;}
.hotline{font-size:13px;color:var(--ink-2);white-space:nowrap;}
.hotline b{color:var(--rose);}
.app-dl{display:inline-flex;align-items:center;gap:6px;background:var(--grad-main);color:#fff;font-size:13.5px;
  font-weight:700;padding:8px 18px;border-radius:999px;cursor:pointer;border:none;
  box-shadow:0 6px 16px rgba(225,29,72,.3);transition:transform .25s,box-shadow .25s;white-space:nowrap;}
.app-dl:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(225,29,72,.4);}
/* 管理后台登录入口：白底玫红描边胶囊，与 APP 下载主按钮形成主次 */
.login-link{display:inline-flex;align-items:center;gap:5px;background:#fff;color:var(--rose);
  font-size:13.5px;font-weight:700;padding:8px 18px;border-radius:999px;cursor:pointer;
  border:1.5px solid var(--rose);text-decoration:none;white-space:nowrap;
  transition:transform .25s,box-shadow .25s,background .25s;}
.login-link:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(225,29,72,.18);background:#FFF1F4;}
.site-header.shrink .login-link{padding:5px 14px;font-size:12.5px;}
.burger{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
  background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;}
.burger span{width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.3s;}
.drawer{display:none;}
@media(max-width:1023px){
  .main-nav,.hotline{display:none;}
  .bar .login-link{display:none;}
  .drawer .drawer-login{display:flex;margin-top:12px;width:100%;justify-content:center;padding:13px;}
  .burger{display:flex;}
  .drawer{display:block;position:fixed;top:var(--header-h);left:0;right:0;z-index:99;background:#fff;
    border-bottom:1px solid var(--line);padding:10px 24px 20px;transform:translateY(-12px);opacity:0;
    pointer-events:none;transition:.3s;box-shadow:0 20px 40px rgba(31,36,48,.12);}
  .drawer.open{transform:none;opacity:1;pointer-events:auto;}
  .drawer a{display:block;padding:13px 6px;border-bottom:1px solid var(--line);font-size:15.5px;}
  .drawer a.active{color:var(--rose);font-weight:700;}
  .drawer .app-dl{margin-top:16px;width:100%;justify-content:center;padding:13px;}
}

/* ---------- 案例照片墙（统一 1:1 方图） ---------- */
.case-wall{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:36px;}
.case-wall figure{margin:0;overflow:hidden;border-radius:16px;aspect-ratio:1/1;background:#F6E7EA;
  box-shadow:0 8px 24px rgba(31,36,48,.08);}
.case-wall img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s ease;}
.case-wall figure:hover img{transform:scale(1.06);}
@media(max-width:1023px){.case-wall{grid-template-columns:repeat(3,1fr);gap:10px;}}
@media(max-width:679px){.case-wall{grid-template-columns:repeat(2,1fr);gap:8px;}}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;color:#fff;background:var(--grad-main);
  padding:96px 0 84px;border-radius:0 0 32px 32px;}
.hero .blob{position:absolute;border-radius:50%;filter:blur(2px);animation:float 7s ease-in-out infinite;}
.hero .b1{width:260px;height:260px;background:radial-gradient(circle at 30% 30%,#FBBD12,transparent 70%);top:-80px;right:-60px;opacity:.5;}
.hero .b2{width:200px;height:200px;background:radial-gradient(circle at 30% 30%,#00FFC6,transparent 70%);bottom:-70px;left:6%;opacity:.3;animation-delay:1.6s;}
.hero .b3{width:120px;height:120px;background:radial-gradient(circle at 30% 30%,#FF71D2,transparent 70%);top:36%;right:16%;opacity:.4;animation-delay:.8s;}
@keyframes float{0%,100%{transform:translateY(0) scale(1);}50%{transform:translateY(-20px) scale(1.05);}}
.hero-inner{position:relative;z-index:2;max-width:640px;}
.hero .kicker{font-size:13px;letter-spacing:4px;opacity:.92;margin-bottom:14px;}
.hero h1{font-size:44px;font-weight:800;line-height:1.3;}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,#FBBD12,#FFE08A);
  -webkit-background-clip:text;background-clip:text;color:transparent;}
.hero p{margin:16px 0 28px;font-size:15.5px;opacity:.92;max-width:520px;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;}
.hero-stats{display:flex;gap:44px;margin-top:44px;padding-top:24px;border-top:1px solid rgba(255,255,255,.2);flex-wrap:wrap;}
.hero-stats b{font-size:28px;font-weight:800;font-variant-numeric:tabular-nums;}
.hero-stats span{display:block;font-size:12.5px;opacity:.85;}
@media(max-width:767px){
  .hero{padding:64px 0 56px;}
  .hero h1{font-size:32px;}
  .hero-stats{gap:24px;}
  .hero-stats>div{width:calc(50% - 12px);}
}

/* ---------- 页头（内页） ---------- */
.page-hero{position:relative;overflow:hidden;color:#fff;background:var(--grad-main);padding:72px 0 60px;border-radius:0 0 32px 32px;}
.page-hero.hot{background:var(--grad-cta);}
.page-hero .blob{position:absolute;border-radius:50%;filter:blur(2px);opacity:.45;animation:float 7s ease-in-out infinite;}
.page-hero .b1{width:220px;height:220px;background:radial-gradient(circle at 30% 30%,#FBBD12,transparent 70%);top:-70px;right:-50px;}
.page-hero .b2{width:160px;height:160px;background:radial-gradient(circle at 30% 30%,#FF71D2,transparent 70%);bottom:-60px;left:10%;animation-delay:1.2s;}
.page-hero-inner{position:relative;z-index:2;max-width:660px;}
.page-hero h1{font-size:36px;font-weight:800;line-height:1.35;}
.page-hero p{margin-top:12px;opacity:.92;font-size:15px;max-width:520px;}
.crumb{font-size:12.5px;opacity:.85;margin-bottom:14px;}
.crumb a{opacity:.9;}
@media(max-width:767px){.page-hero h1{font-size:27px;}.page-hero{padding:52px 0 44px;}}

/* ---------- 通用卡片 ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--sh-sm);
  transition:transform .3s,box-shadow .3s,border-color .3s;}
.card:hover{transform:translateY(-6px);box-shadow:var(--sh-rose);border-color:#F9C8D2;}
.grid{display:grid;gap:18px;}
.g2{grid-template-columns:repeat(2,1fr);}
.g3{grid-template-columns:repeat(3,1fr);}
.g4{grid-template-columns:repeat(4,1fr);}
.g5{grid-template-columns:repeat(5,1fr);}
@media(max-width:1023px){.g4,.g5{grid-template-columns:repeat(2,1fr);}.g3{grid-template-columns:repeat(2,1fr);}}
@media(max-width:679px){.g2,.g3,.g4,.g5{grid-template-columns:1fr;}}
.ico{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:24px;background:var(--bg-rose);color:var(--rose);margin-bottom:14px;}
.card h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.card p{font-size:13.5px;color:var(--ink-2);}

/* ---------- 公告跑马灯（notice-bar 思路） ---------- */
.notice{background:#fff;border-bottom:1px solid var(--line);overflow:hidden;}
.notice .track{display:flex;align-items:center;height:42px;gap:10px;}
.notice .label{flex:none;background:var(--bg-rose);color:var(--rose);font-size:12px;font-weight:700;
  padding:3px 12px;border-radius:999px;margin-left:24px;}
.notice .viewport{overflow:hidden;flex:1;}
.notice .inner{display:inline-flex;gap:60px;white-space:nowrap;animation:marquee 26s linear infinite;font-size:13.5px;color:var(--ink-2);}
.notice:hover .inner{animation-play-state:paused;}
@keyframes marquee{from{transform:translateX(0);}to{transform:translateX(-50%);}}

/* ---------- 步骤条（steps 思路：连线生长） ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step;}
.steps.s5{grid-template-columns:repeat(5,1fr);}
.steps.s6{grid-template-columns:repeat(6,1fr);}
.step{position:relative;text-align:center;padding-top:6px;}
.step .dot{width:58px;height:58px;margin:0 auto 14px;border-radius:50%;background:#fff;border:2px solid #F9C8D2;
  display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--rose);position:relative;z-index:2;
  transition:.5s;transition-delay:calc(var(--i)*.12s);}
.step::before{content:"";position:absolute;top:34px;left:calc(-50% + 29px);right:calc(50% + 29px);height:2px;
  background:#F9C8D2;transform:scaleX(0);transform-origin:left;transition:transform .5s ease;transition-delay:calc(var(--i)*.12s);}
.step:first-child::before{display:none;}
.steps.play .dot{background:var(--grad-main);border-color:transparent;color:#fff;box-shadow:0 8px 18px rgba(225,29,72,.3);}
.steps.play .step::before{transform:scaleX(1);}
.step b{display:block;font-size:15px;margin-bottom:4px;}
.step small{font-size:12.5px;color:var(--ink-2);}
@media(max-width:1023px){
  .steps,.steps.s5,.steps.s6{grid-template-columns:repeat(2,1fr);}
  .step::before{display:none;}
}

/* ---------- 时间线（time-line 思路） ---------- */
.timeline{position:relative;max-width:760px;margin:0 auto;padding-left:34px;}
.timeline::before{content:"";position:absolute;left:10px;top:6px;bottom:6px;width:2px;background:#F9C8D2;}
.tl-item{position:relative;margin-bottom:26px;}
.tl-item::before{content:"";position:absolute;left:-30px;top:7px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--rose);box-shadow:0 0 0 4px var(--bg-rose);}
.tl-item b{font-size:15.5px;}
.tl-item .date{font-size:12.5px;color:var(--rose);font-weight:700;margin-right:10px;}
.tl-item p{font-size:13.5px;color:var(--ink-2);margin-top:4px;}

/* ---------- 活动卡（count-down 思路） ---------- */
.event-card{display:flex;flex-direction:column;gap:10px;}
.event-card .ev-top{display:flex;justify-content:space-between;align-items:center;}
.event-card .badge-free{background:#E6FFF9;color:#0F766E;border:1px solid #99F6E4;font-size:12px;
  padding:2px 10px;border-radius:999px;}
.event-card .cd{display:flex;gap:8px;font-variant-numeric:tabular-nums;}
.event-card .cd i{font-style:normal;background:var(--ink);color:#fff;border-radius:8px;padding:4px 9px;
  font-size:13px;font-weight:700;text-align:center;min-width:44px;}
.event-card .cd i small{display:block;font-size:10px;font-weight:400;opacity:.8;}
.progress{height:8px;border-radius:99px;background:#F3EDED;overflow:hidden;}
.progress i{display:block;height:100%;border-radius:99px;background:var(--grad-main);
  transform:scaleX(0);transform-origin:left;transition:transform 1s ease .3s;}
.play .progress i,.progress.play i{transform:scaleX(var(--p,0.7));}

/* ---------- FAQ ---------- */
.faq{max-width:760px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:8px 26px;}
.faq-i{border-bottom:1px solid var(--line);}
.faq-i:last-child{border-bottom:none;}
.faq-q{padding:17px 4px;font-size:15px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;user-select:none;gap:14px;}
.faq-q i{font-style:normal;color:var(--rose);font-size:19px;transition:transform .3s;flex:none;}
.faq-i.open .faq-q i{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease;font-size:13.5px;color:var(--ink-2);}
.faq-i.open .faq-a{max-height:200px;padding-bottom:16px;}

/* ---------- 表单 ---------- */
.form-card{max-width:640px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:34px;box-shadow:var(--sh-sm);}
.form-card h3{text-align:center;font-size:20px;margin-bottom:6px;}
.form-card .sub{text-align:center;color:var(--ink-2);font-size:13px;margin-bottom:22px;}
.f-row{margin-bottom:16px;}
.f-row label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;}
.f-row label em{color:var(--rose);font-style:normal;}
.f-row input,.f-row select,.f-row textarea{width:100%;border:1.5px solid var(--line);border-radius:10px;
  padding:11px 14px;font-size:14px;font-family:inherit;transition:border-color .25s,box-shadow .25s;background:#FCFBFB;}
.f-row input:focus,.f-row select:focus,.f-row textarea:focus{outline:none;border-color:var(--rose);
  box-shadow:0 0 0 3px rgba(225,29,72,.12);background:#fff;}
.f-row .err{font-size:12px;color:var(--rose);margin-top:4px;display:none;}
.f-row.invalid input,.f-row.invalid textarea{border-color:var(--rose);}
.f-row.invalid .err{display:block;}
.f-2{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
@media(max-width:679px){.f-2{grid-template-columns:1fr;}}
.form-ok{display:none;text-align:center;padding:34px 10px;}
.form-ok .ok-ico{width:64px;height:64px;margin:0 auto 14px;border-radius:50%;background:#E6FFF9;color:#0F766E;
  font-size:30px;display:flex;align-items:center;justify-content:center;}
.form-ok b{font-size:17px;}
.form-ok p{color:var(--ink-2);font-size:13.5px;margin-top:6px;}

/* ---------- 对比表 / checklist ---------- */
.compare{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:900px;margin:0 auto;}
.cmp{border:1px solid var(--line);border-radius:var(--r);padding:24px;background:#fff;transition:.3s;}
.cmp:hover{transform:translateY(-5px);box-shadow:var(--sh-sm);}
.cmp.hot{border:2px solid var(--gold);position:relative;box-shadow:0 14px 30px rgba(251,189,18,.18);}
.cmp .tag{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--gold);color:#fff;
  font-size:12px;font-weight:700;padding:3px 14px;border-radius:999px;white-space:nowrap;}
.cmp h3{font-size:16px;margin-bottom:12px;}
.cmp ul li{font-size:13.5px;color:var(--ink-2);padding:7px 0;border-bottom:1px dashed var(--line);}
.cmp ul li:last-child{border:none;}
.cmp ul li b{color:var(--ink);}
@media(max-width:899px){.compare{grid-template-columns:1fr;}}
.checklist{max-width:640px;margin:0 auto;}
.checklist li{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:14px 18px;margin-bottom:10px;font-size:14px;transition:.3s;}
.checklist li .ck{flex:none;width:24px;height:24px;border-radius:50%;background:var(--bg-rose);color:var(--rose);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;margin-top:2px;}
.checklist li:hover{border-color:#F9C8D2;box-shadow:var(--sh-sm);}

/* ---------- 占位图 ---------- */
.ph{border-radius:12px;display:flex;align-items:center;justify-content:center;color:#B08A93;font-size:13px;
  background:linear-gradient(135deg,#FFF1F3 0%,#FFF7E0 100%);border:1px dashed #F0C9D2;}

/* ---------- 页脚 ---------- */
.site-footer{background:#241017;color:#E8D9DC;margin-top:88px;}
.site-footer .top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding:56px 0 40px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px;}
.site-footer a,.site-footer li{font-size:13.5px;color:#C9AFB5;}
.site-footer li{margin:8px 0;}
.site-footer a:hover{color:#fff;}
.site-footer .brand p{font-size:13px;color:#C9AFB5;margin-top:10px;max-width:300px;}
.site-footer .qr{display:flex;gap:14px;align-items:center;}
.site-footer .qr .ph{width:96px;height:96px;flex:none;background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.2);color:#C9AFB5;font-size:11px;text-align:center;}
.site-footer .bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;text-align:center;font-size:12.5px;color:#9A7F86;}
@media(max-width:899px){.site-footer .top{grid-template-columns:1fr 1fr;}}
@media(max-width:599px){.site-footer .top{grid-template-columns:1fr;}}

/* ---------- FAB ---------- */
.fab-wrap{position:fixed;right:22px;bottom:26px;z-index:90;display:flex;flex-direction:column;gap:12px;
  opacity:0;pointer-events:none;transform:translateY(16px);transition:.35s;}
.fab-wrap.show{opacity:1;pointer-events:auto;transform:none;}
.fab{width:50px;height:50px;border-radius:50%;border:none;cursor:pointer;display:flex;align-items:center;
  justify-content:center;font-size:20px;box-shadow:0 10px 24px rgba(31,36,48,.2);transition:transform .25s;}
.fab:hover{transform:translateY(-3px);}
.fab.top{background:#fff;color:var(--rose);border:1px solid var(--line);}
.fab.chat{background:var(--grad-main);color:#fff;font-size:22px;}

/* ---------- APP 下载弹层 ---------- */
.modal-mask{position:fixed;inset:0;z-index:200;background:rgba(31,16,20,.55);backdrop-filter:blur(4px);
  display:none;align-items:center;justify-content:center;padding:20px;}
.modal-mask.open{display:flex;}
.modal{background:#fff;border-radius:20px;max-width:400px;width:100%;padding:32px;position:relative;text-align:center;
  animation:pop .3s cubic-bezier(.22,.9,.35,1);}
@keyframes pop{from{transform:scale(.9) translateY(14px);opacity:0;}to{transform:none;opacity:1;}}
.modal .close{position:absolute;top:12px;right:14px;width:34px;height:34px;border:none;background:#F5F0F0;
  border-radius:50%;cursor:pointer;font-size:15px;color:var(--ink-2);}
.modal .app-ico{width:72px;height:72px;margin:0 auto 14px;border-radius:18px;background:var(--grad-main);
  color:#fff;font-size:32px;display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-rose);}
.modal h3{font-size:19px;margin-bottom:4px;}
.modal .sub{font-size:13px;color:var(--ink-2);margin-bottom:20px;}
.modal .ph.qr{width:180px;height:180px;margin:0 auto 18px;font-size:12px;}
.modal .btn{width:100%;}
.modal .tip{font-size:12px;color:var(--ink-2);margin-top:12px;}

/* ---------- 滚动显现 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.22,.9,.35,1);
  transition-delay:var(--d,0s);}
.reveal.in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- 辅助 ---------- */
.center{text-align:center;}
.mt-20{margin-top:20px;}
.mt-40{margin-top:40px;}
.split{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:start;}
@media(max-width:899px){.split{grid-template-columns:1fr;}}
.banner-join{border-radius:24px;background:var(--grad-cta);color:#fff;padding:48px 44px;position:relative;overflow:hidden;}
.banner-join .blob{position:absolute;border-radius:50%;filter:blur(2px);opacity:.4;animation:float 7s ease-in-out infinite;
  width:160px;height:160px;background:radial-gradient(circle at 30% 30%,#00FFC6,transparent 70%);right:-40px;top:-40px;}
.banner-join h3{font-size:24px;font-weight:800;position:relative;z-index:2;}
.banner-join p{opacity:.92;font-size:14px;margin:8px 0 22px;position:relative;z-index:2;}
.banner-join .btn{position:relative;z-index:2;background:#fff;color:var(--rose);}