/* ============ 设计 token（与首页一致） ============ */
:root{
  --brand:#0052d9; --brand-2:#3d7bff; --brand-d:#0047c4; --brand-dd:#003aa8;
  --brand-soft:#E8EFFF; --brand-line:#C9D8F8;
  --bg:#F5FAFF; --bg-2:#EAF4FF; --white:#fff;
  --ink:#16283A; --ink-2:#46586A; --ink-3:#7C8DA0; --line:#E4EEF8;
  --ok:#12B76A;
  --r:16px; --r-sm:12px;
  --shadow:0 6px 24px rgba(0,60,150,.08);
  --shadow-lg:0 18px 48px rgba(0,60,150,.14);
  --ease:cubic-bezier(.22,1,.36,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.wrap{width:min(1320px,92%);margin:0 auto}
section{position:relative;padding:72px 0}
.kicker{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:600;font-size:14px;letter-spacing:.08em}
.kicker::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px}
.sec-title{font-size:30px;font-weight:800;letter-spacing:.01em;margin:10px 0 8px;color:var(--ink)}
.sec-sub{color:var(--ink-3);font-size:15px;max-width:640px}
.rv{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.rv.on{opacity:1;transform:none}
/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 26px;border-radius:999px;font-size:15px;font-weight:600;transition:all .25s var(--ease);white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 8px 22px rgba(0,82,217,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(0,82,217,.42)}
.btn-ghost{background:#fff;color:var(--brand);border:1px solid var(--brand-line)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand)}
.btn .arrow{transition:transform .25s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
/* ============ 顶部导航 ============ */
.header{position:fixed;top:0;left:0;right:0;z-index:100;transition:all .3s var(--ease);background:rgba(255,255,255,.86);backdrop-filter:blur(12px);box-shadow:0 1px 0 var(--line)}
.nav{display:flex;align-items:center;gap:28px;height:68px;width:100%;max-width:none;padding:0 36px;box-sizing:border-box;margin:0}
@media (max-width:768px){.nav{padding:0 18px;gap:16px}}
.logo{display:flex;align-items:center;gap:10px}
.logo-img{height:34px;width:auto;display:block}
.nav-menu{display:flex;gap:6px;margin-left:8px;flex:1}
.nav-item{position:relative}
.nav-item>a{display:flex;align-items:center;gap:5px;padding:10px 14px;border-radius:10px;font-size:15px;font-weight:500;color:var(--ink-2);transition:color .2s}
.nav-item>a:hover,.nav-item.open>a,.nav-item.active>a{color:var(--brand)}
.nav-item .caret{width:9px;height:9px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform .2s}
.drop{position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%) translateY(8px);min-width:200px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-lg);padding:8px;opacity:0;visibility:hidden;transition:all .25s var(--ease)}
.nav-item:hover .drop,.nav-item.open .drop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.drop a{display:flex;align-items:center;gap:11px;padding:11px 14px;border-radius:10px;font-size:14.5px}
.drop a b{font-weight:600;color:var(--ink)}
.drop a .dico{width:18px;height:18px;color:var(--brand);flex-shrink:0}
.drop a:hover{background:var(--brand-soft)}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-login{font-size:15px;color:var(--ink-2);font-weight:500;padding:8px 14px}
.nav-login:hover{color:var(--brand)}
.nav-cta{padding:10px 22px;font-size:14.5px}
.burger{display:none;width:42px;height:42px;border-radius:10px;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.burger span{width:20px;height:2px;background:var(--ink);border-radius:2px;transition:all .3s}
/* ============ 产品 Hero ============ */
.hero{padding:128px 0 64px;overflow:hidden;background:linear-gradient(180deg,#DCE7FF 0%,#E7F0FF 55%,#fff 100%)}
.hero-bg{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.hero-dots{position:absolute;inset:0;background-image:radial-gradient(circle,#C6D6F5 1.2px,transparent 1.6px);background-size:26px 26px;opacity:.5;mask-image:linear-gradient(180deg,#000,transparent 75%)}
.glow{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5}
.glow-a{width:420px;height:420px;background:#C7DCFF;top:-120px;right:-60px}
.glow-b{width:300px;height:300px;background:#E6EEFF;bottom:-80px;left:-80px;opacity:.6}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;position:relative}
.hero h1{font-size:40px;line-height:1.38;font-weight:800;letter-spacing:.01em;margin-bottom:16px}
.hero h1 .hl{background:linear-gradient(120deg,var(--brand),#6f9bff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-desc{font-size:16px;color:var(--ink-2);max-width:520px;margin-bottom:22px}
.hero-points{display:flex;flex-wrap:wrap;gap:8px 22px;margin-bottom:28px}
.hpoint{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:500;color:var(--ink-2)}
.hpoint::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand);flex-shrink:0}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:34px}
.hero-notes{display:flex;gap:34px;flex-wrap:wrap}
.hnote b{font-size:28px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;display:block;line-height:1.2}
.hnote b small{font-size:17px;font-weight:700;color:var(--brand);margin-left:2px}
.hnote .num{font-size:28px;color:var(--brand)}
.hnote>span{font-size:13px;color:var(--ink-3)}
/* hero 右侧手机 */
.hero-visual{position:relative;display:flex;justify-content:center;align-items:center;min-height:500px}
.phone{width:264px;background:#101826;border-radius:42px;padding:8px;position:relative;animation:floatY 6s ease-in-out infinite;box-shadow:0 30px 54px rgba(0,60,150,.26),0 4px 14px rgba(0,60,150,.12)}
.p-screen{background:#F6F9FF;border-radius:33px;padding:11px 13px 13px;min-height:480px;display:flex;flex-direction:column}
.p-statusbar{display:flex;justify-content:space-between;align-items:center;padding:4px 6px 10px;font-size:12.5px;font-weight:700;color:#16283A}
.p-head{display:flex;align-items:center;gap:10px;padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:12px}
.brand-avatar{width:38px;height:38px;border-radius:50%;background:#fff;border:1px solid var(--brand-line);display:flex;align-items:center;justify-content:center;flex-shrink:0;overflow:hidden;background-image:url('/assets/redesign/logo-s.jpg');background-size:92%;background-position:center;background-repeat:no-repeat;color:transparent}
.p-head b{font-size:14.5px;display:flex;align-items:center;gap:5px}
.verify{color:var(--brand);width:15px;height:15px}
.p-head small{display:block;font-size:12px;color:var(--ink-3);font-weight:400;margin-top:2px}
.msg{background:#fff;border:1px solid #E9EFF6;border-radius:14px;padding:13px 14px;font-size:13.5px;color:var(--ink-2);margin-bottom:10px;box-shadow:0 2px 8px rgba(0,60,150,.06)}
.msg .sign{color:var(--brand-dd);font-weight:600}
.msg-later{opacity:0;transform:translateY(8px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.msg-later.shown{opacity:1;transform:none}
.p-home{width:110px;height:4px;background:#C9D5E4;border-radius:99px;margin:12px auto 2px;margin-top:auto}
.p-shadow{position:absolute;bottom:6px;left:50%;transform:translateX(-50%);width:230px;height:26px;background:radial-gradient(ellipse,rgba(0,60,150,.22),transparent 70%);filter:blur(4px);z-index:-1}
.hero-chip{position:absolute;display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--line);border-radius:99px;padding:9px 15px;font-size:13px;font-weight:600;color:var(--ink-2);box-shadow:var(--shadow);white-space:nowrap;animation:chipIn .45s var(--ease),floatY 5s ease-in-out .55s infinite}
.hero-chip svg{width:16px;height:16px;color:var(--brand)}
.hero-chip.pos-a{top:12%;left:2%}
.hero-chip.pos-b{bottom:22%;right:2%;animation-delay:0s,1.4s}
.hero-chip.pos-c{top:45%;right:0;animation-delay:0s,2.8s}
@keyframes chipIn{from{opacity:0;transform:translateY(10px) scale(.96)}to{opacity:1;transform:none}}
@keyframes msgIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
/* ============ 套餐价格 ============ */
.pricing{background:#fff}
.price-head{text-align:center;margin-bottom:36px}
.price-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.price-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px 14px;position:relative;transition:all .28s var(--ease);display:flex;flex-direction:column;align-items:center;text-align:center}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--brand-line)}
.price-card .hot{position:absolute;top:0;right:12px;background:linear-gradient(135deg,#FF7A45,#FF4D4F);color:#fff;font-size:11px;font-weight:700;padding:4px 11px;border-radius:0 0 10px 10px;letter-spacing:.06em}
.pc-amount{display:flex;align-items:baseline;justify-content:center;gap:3px;margin-bottom:3px}
.pc-amount .y{font-size:14px;font-weight:700;color:var(--ink-2)}
.pc-amount b{font-size:26px;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1.15}
.pc-count{font-size:13px;color:var(--ink-2);margin-bottom:5px}
.pc-count b{color:var(--brand);font-weight:800}
.pc-unit{display:inline-flex;align-items:center;gap:5px;align-self:center;background:var(--brand-soft);color:var(--brand-dd);font-size:12px;font-weight:600;padding:4px 10px;border-radius:99px;margin:6px 0 14px}
.pc-unit svg{width:12px;height:12px}
.pc-btn{margin-top:auto;display:inline-flex;align-items:center;justify-content:center;gap:5px;background:var(--brand);color:#fff;font-size:13px;font-weight:600;padding:10px 14px;border-radius:99px;transition:background .25s}
.pc-btn:hover{background:var(--brand-d)}
.pc-btn.ghost{background:var(--brand-soft);color:var(--brand-dd)}
.pc-btn.ghost:hover{background:var(--brand);color:#fff}
.big-note{margin-top:20px;text-align:center;font-size:14px;color:var(--ink-3)}
.big-note b{color:var(--ink-2);font-weight:700}
.big-note .tbtn{display:inline-flex;align-items:center;gap:6px;margin-left:12px;color:var(--brand);font-weight:600;font-size:14.5px;transition:opacity .2s}
.big-note .tbtn:hover{opacity:.75}
.big-note .tbtn svg{width:15px;height:15px}
/* ============ 多场景适用 ============ */
.scenes{background:var(--bg)}
.scene-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:44px;align-items:center;margin-top:38px}
.scene-chips{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.scene-chip{display:flex;align-items:center;gap:11px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:15px 16px;transition:all .25s var(--ease);cursor:pointer;text-align:left;width:100%;font-family:inherit;color:inherit}
.scene-chip:hover{transform:translateY(-2px);border-color:var(--brand-line);box-shadow:var(--shadow)}
.scene-chip.active{background:var(--brand-soft);border-color:var(--brand);box-shadow:inset 0 0 0 1px var(--brand)}
.scene-chip .sc-ic{width:38px;height:38px;border-radius:11px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .25s,color .25s}
.scene-chip.active .sc-ic{background:var(--brand);color:#fff}
.scene-chip .sc-ic svg{width:20px;height:20px}
.scene-chip b{font-size:14.5px;font-weight:700;color:var(--ink)}
.scene-chip.active b{color:var(--brand-dd)}
.scene-phone-wrap{position:relative;display:flex;justify-content:center}
.scene-phone{width:232px;background:#101826;border-radius:36px;padding:8px;box-shadow:0 24px 44px rgba(0,60,150,.22);position:relative;z-index:1}
.scp-screen{background:#F6F9FF;border-radius:29px;min-height:398px;padding:14px 13px;display:flex;flex-direction:column}
.scp-status{display:flex;justify-content:space-between;font-size:11.5px;font-weight:700;color:#16283A;margin-bottom:10px}
.scp-list-head{font-size:13px;font-weight:700;color:#16283A;margin-bottom:10px}
.scp-row{display:flex;gap:10px;align-items:center;background:#fff;border:1px solid #E9EFF6;border-radius:14px;padding:11px;margin-bottom:9px}
.scp-row b{font-size:13px;display:flex;align-items:center;gap:5px}
.scp-row p{font-size:11.5px;color:var(--ink-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:128px}
.scp-badge{font-size:10px;color:var(--brand);background:var(--brand-soft);border-radius:99px;padding:2px 7px;font-weight:600}
.scp-bubble{background:#fff;border:1px solid #E9EFF6;border-radius:14px;padding:13px 14px;font-size:12.5px;color:var(--ink-2);box-shadow:0 2px 8px rgba(0,60,150,.06);min-height:66px;line-height:1.75}
.scp-bubble .sign{color:var(--brand-dd);font-weight:600}
.scp-avatar{width:34px;height:34px;border-radius:50%;background:#fff;border:1px solid var(--brand-line);display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0;font-size:14px;overflow:hidden;background-image:url('/assets/redesign/logo-s.jpg');background-size:92%;background-position:center;background-repeat:no-repeat;color:transparent}
.scp-avatar.alt{background:#C7D3E6;color:#5A6B80;background-image:none}
.scp-home{width:100px;height:4px;background:#C9D5E4;border-radius:99px;margin:12px auto 2px;margin-top:auto}
/* ============ 语音来电效果（与首页一致） ============ */
.call-ui{display:flex;flex-direction:column;align-items:center;justify-content:space-between;min-height:360px;padding:22px 4px 6px;flex:1}
.call-top{display:flex;flex-direction:column;align-items:center;gap:12px}
.call-avatar{position:relative;width:66px;height:66px;border-radius:50%;background:#fff;border:1px solid rgba(255,255,255,.35);display:flex;align-items:center;justify-content:center;box-shadow:0 10px 22px rgba(0,0,0,.25);overflow:hidden;background-image:url('/assets/redesign/logo-s.jpg');background-size:86%;background-position:center;background-repeat:no-repeat;color:transparent}
.call-avatar .cw{position:absolute;inset:0;border-radius:50%;border:2px solid rgba(255,255,255,.5);opacity:0}
.call-ui.ring .call-avatar .cw{animation:cwRing 1.8s ease-out infinite}
.call-ui.ring .call-avatar .cw.cw2{animation-delay:.9s}
@keyframes cwRing{0%{transform:scale(1);opacity:.7}100%{transform:scale(1.9);opacity:0}}
.call-name{font-size:16px;font-weight:700;color:#fff}
.call-status{font-size:13px;color:rgba(255,255,255,.72);min-height:18px;transition:opacity .3s}
.call-wave{display:flex;align-items:center;gap:4px;height:34px;opacity:0;transition:opacity .3s}
.call-ui.connected .call-wave{opacity:1}
.call-wave i{width:4px;border-radius:3px;background:linear-gradient(180deg,var(--brand-2),var(--brand));animation:eqBar 1s ease-in-out infinite}
.call-wave i:nth-child(1){height:12px;animation-delay:0s}
.call-wave i:nth-child(2){height:22px;animation-delay:.12s}
.call-wave i:nth-child(3){height:30px;animation-delay:.24s}
.call-wave i:nth-child(4){height:20px;animation-delay:.36s}
.call-wave i:nth-child(5){height:13px;animation-delay:.48s}
@keyframes eqBar{0%,100%{transform:scaleY(.45)}50%{transform:scaleY(1)}}
.call-transcript{width:100%;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:13px 14px;font-size:13.5px;color:#fff;box-shadow:0 2px 8px rgba(0,0,0,.12);opacity:0;transform:translateY(8px);transition:all .4s var(--ease)}
.call-ui.connected .call-transcript{opacity:1;transform:none}
.call-transcript b{color:#fff;font-weight:600}
.call-actions{display:flex;align-items:center;gap:44px;margin-top:18px}
.call-btn{width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;border:none;cursor:pointer;transition:transform .2s,box-shadow .2s}
.call-btn svg{width:24px;height:24px;color:#fff}
.call-btn.answer{background:linear-gradient(135deg,#16a34a,#22c55e);box-shadow:0 10px 20px rgba(22,163,74,.32)}
.call-ui.ring .call-btn.answer{animation:answerPulse 1.6s ease-in-out infinite}
@keyframes answerPulse{0%,100%{box-shadow:0 10px 20px rgba(22,163,74,.32)}50%{box-shadow:0 10px 20px rgba(22,163,74,.32),0 0 0 10px rgba(34,197,94,.18)}}
.call-btn.hangup{background:linear-gradient(135deg,#ef4444,#f87171);box-shadow:0 10px 20px rgba(239,68,68,.3)}
.call-btn:active{transform:scale(.94)}
/* 来电模式：屏幕整体深色，与首页一致，避免嵌套视觉 */
#heroPhone.voice-mode .p-screen{background:#2E333B}
#heroPhone.voice-mode .p-statusbar{color:#fff}
.scene-phone.call-mode .scp-screen{background:#2E333B}
.scene-phone.call-mode .scp-status{color:#fff}
/* ============ 服务能力 ============ */
.feats{background:#fff}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:34px}
.feat-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;transition:all .28s var(--ease);position:relative;overflow:hidden}
.feat-card::before{content:"";position:absolute;left:0;top:0;height:3px;width:0;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .3s var(--ease)}
.feat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--brand-line)}
.feat-card:hover::before{width:100%}
.fc-num{position:absolute;top:18px;right:20px;font-size:32px;font-weight:800;line-height:1;color:#E8EEF8;font-variant-numeric:tabular-nums;transition:color .25s}
.feat-card:hover .fc-num{color:var(--brand-line)}
.fc-head{display:flex;align-items:center;gap:12px;margin-bottom:16px;padding-bottom:16px;border-bottom:1px solid #EEF2F7}
.ficon{width:46px;height:46px;border-radius:13px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.ficon svg{width:24px;height:24px;color:var(--brand)}
.feat-card h4{font-size:16.5px;font-weight:700}
.feat-card ul{display:flex;flex-direction:column;gap:8px}
.feat-card li{display:flex;gap:8px;align-items:flex-start;background:var(--bg);border:1px solid #EDF2F8;border-radius:11px;padding:9px 12px;font-size:13px;color:var(--ink-2);line-height:1.6}
.feat-card li svg{width:14px;height:14px;color:var(--ok);flex-shrink:0;margin-top:3px}
/* ============ 客户与资质 ============ */
.clients{background:#f2f5fc}
.why-stats2{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px 20px;margin-top:20px;min-height:260px;align-items:center;background:transparent url("/assets/redesign/network-bg.jpg") center/auto 150% no-repeat;-webkit-mask-image:radial-gradient(ellipse 115% 108% at 50% 50%,#000 52%,transparent 94%);mask-image:radial-gradient(ellipse 115% 108% at 50% 50%,#000 52%,transparent 94%)}
.wstat2{text-align:center}
.wstat2 b{font-size:48px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.05;display:flex;align-items:baseline;justify-content:center;gap:6px;flex-wrap:nowrap}
.wstat2 b small{font-size:26px;font-weight:700}
.wstat2 .num{font-size:48px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.05}
.wstat2 span{display:block;font-size:14px;color:var(--ink-3);margin-top:8px}
.partner-strip{text-align:center;margin-top:24px;padding-top:20px;border-top:1px solid #E4ECF7}
.partner-strip .ps-lead{font-size:14px;color:var(--ink-3);margin-bottom:18px}
.partner-strip .ps-lead b{color:var(--brand);font-weight:700}
.partner-strip .ps-lead a{color:var(--brand);font-weight:700}
.marquee{overflow:hidden;position:relative;margin-top:20px;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee-track{display:flex;align-items:center;gap:22px;width:max-content;animation:mqScroll 32s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-item{flex:0 0 auto;height:62px;padding:0 26px;background:#fff;border:1px solid #E6EEF9;border-radius:14px;display:flex;align-items:center;justify-content:center;opacity:.72;filter:grayscale(.35);box-shadow:0 2px 10px rgba(0,60,150,.05);transition:opacity .25s,filter .25s,box-shadow .25s,transform .25s}
.marquee-item:hover{opacity:1;filter:grayscale(0);transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,82,217,.12)}
.marquee-item img{height:34px;width:auto;max-width:130px;object-fit:contain;display:block}
@keyframes mqScroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
/* ============ 快速接入 ============ */
.onboard{background:var(--bg)}
.ob-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:40px;position:relative}
.ob-steps::before{content:"";position:absolute;left:12%;right:12%;top:25px;height:2px;background:linear-gradient(90deg,var(--brand-line),var(--brand));border-radius:2px}
.ob-step{position:relative;z-index:1;text-align:center;padding:0 4px}
.ob-dot{width:50px;height:50px;margin:0 auto 14px;border-radius:50%;background:#fff;border:2px solid var(--brand);color:var(--brand);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:19px;box-shadow:0 0 0 7px var(--brand-soft)}
.ob-step b{font-size:15.5px;font-weight:700;display:block;margin-bottom:5px}
.ob-step p{font-size:13px;color:var(--ink-3);line-height:1.7;max-width:200px;margin:0 auto}
.ob-links{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:36px}
.ob-link{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 20px;transition:all .25s var(--ease);color:var(--ink)}
.ob-link:hover{transform:translateY(-2px);border-color:var(--brand-line);box-shadow:var(--shadow-lg)}
.ob-link .ol-ic{width:42px;height:42px;border-radius:12px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.ob-link .ol-ic svg{width:21px;height:21px}
.ob-link b{font-size:15px;font-weight:700;display:block}
.ob-link span{font-size:12.5px;color:var(--ink-3)}
.ob-link .ol-go{margin-left:auto;color:#C3CFDC;font-size:19px;line-height:1;transition:all .2s}
.ob-link:hover .ol-go{color:var(--brand);transform:translateX(3px)}
/* ============ CTA ============ */
.cta-band{position:relative;overflow:hidden;padding:40px 0;color:#fff;background:linear-gradient(118deg,#003aa8 0%,#0052d9 46%,#3d7bff 100%)}
.cta-flow{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.silk{position:absolute;display:block;border-radius:50%}
.silk-a{width:760px;height:170px;top:6%;right:-120px;filter:blur(22px);background:linear-gradient(90deg,transparent,rgba(255,255,255,.32),transparent);transform:rotate(-18deg);animation:silkDrift 11s ease-in-out infinite}
.silk-b{width:820px;height:130px;bottom:4%;left:-160px;filter:blur(26px);background:linear-gradient(90deg,transparent,rgba(190,220,255,.26),transparent);transform:rotate(-14deg);animation:silkDrift 14s ease-in-out infinite reverse}
.silk-c{width:460px;height:360px;top:-120px;right:22%;filter:blur(40px);background:radial-gradient(circle,rgba(255,255,255,.2),transparent 70%);animation:silkPulse 8s ease-in-out infinite}
@keyframes silkDrift{0%,100%{transform:translateX(0) rotate(-18deg)}50%{transform:translateX(-46px) rotate(-14deg)}}
@keyframes silkPulse{0%,100%{opacity:.5;transform:scale(1)}50%{opacity:.9;transform:scale(1.12)}}
.cta-inner{position:relative;z-index:1}
.cta-inner h2{font-size:32px;font-weight:800;margin-bottom:12px;letter-spacing:.01em}
.cta-inner p{font-size:16px;color:rgba(255,255,255,.9);margin-bottom:22px;max-width:560px}
.cta-points{display:flex;flex-wrap:wrap;gap:14px 28px;margin-bottom:30px}
.cta-points li{display:flex;align-items:center;gap:8px;font-size:14.5px;color:rgba(255,255,255,.95)}
.cta-points svg{width:20px;height:20px;flex-shrink:0}
.cta-btns{display:flex;gap:16px;flex-wrap:wrap}
.cta-inner .btn-light{background:#fff;color:var(--brand-dd);box-shadow:0 10px 26px rgba(0,0,0,.18)}
.cta-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.55)}
.cta-ghost:hover{background:rgba(255,255,255,.12)}
/* ============ Footer ============ */
footer{background:#0E2233;color:#B8CBDC}
.foot-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;padding:26px 0 22px;border-bottom:1px solid rgba(255,255,255,.1)}
.fs-item{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:nowrap;white-space:nowrap;height:30px}
.fs-item img{width:30px;height:30px;object-fit:contain;flex-shrink:0;display:block}
.fs-item span{color:#E8F0F8;font-size:14px;line-height:30px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1fr;gap:32px;padding:36px 0}
.foot-brand .logo{color:#fff;margin-bottom:14px}
.foot-brand p{font-size:13.5px;color:#8FA9BC;max-width:280px;margin-bottom:16px}
.fhotline{font-size:14px;color:#8FA9BC}
.fhotline b{display:block;font-size:24px;color:#fff;font-weight:800;letter-spacing:.03em;margin:4px 0}
.fcol h5{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px}
.fcol a{display:block;font-size:13.5px;color:#9FB6C7;padding:5px 0;transition:color .2s}
.fcol a:hover{color:#7CC8FF}
.foot-legal{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;text-align:center;font-size:12.5px;color:#7290A4}
.foot-legal a{color:#7290A4;margin:0 8px}
/* toast */
.toast{position:fixed;left:50%;bottom:40px;transform:translateX(-50%) translateY(20px);background:#0E2233;color:#fff;padding:14px 22px;border-radius:14px;font-size:14px;box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transition:all .3s var(--ease);z-index:200;max-width:90vw}
.toast.show{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
/* 右侧悬浮圆钮 */
.side-rail{position:fixed;right:22px;top:50%;transform:translateY(-50%);z-index:150;display:flex;flex-direction:column;align-items:center;gap:14px}
.rail-pill{position:relative;display:flex;flex-direction:column;align-items:center;gap:9px;width:62px;padding:18px 0;border-radius:32px;background:linear-gradient(160deg,var(--brand-2),var(--brand));color:#fff;text-decoration:none;transition:transform .25s}
.rail-pill::after{content:"";position:absolute;inset:-8px;border-radius:38px;border:2px solid rgba(0,82,217,.35);opacity:0;animation:railHalo 2.6s ease-out infinite;pointer-events:none;z-index:-1}
.rail-pill:hover{transform:translateY(-2px)}
.rail-pill svg{width:22px;height:22px}
.rail-pill span{writing-mode:vertical-rl;font-size:13.5px;font-weight:600;letter-spacing:2px}
@keyframes railHalo{0%{transform:scale(1);opacity:.6}100%{transform:scale(1.28);opacity:0}}
.rail-item{position:relative;display:flex;align-items:center;justify-content:center;text-decoration:none}
.rail-mini{width:52px;height:52px;border-radius:50%;background:#fff;border:1px solid var(--line);color:var(--brand);display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(0,60,150,.14);transition:transform .25s,box-shadow .25s}
.rail-mini svg{width:22px;height:22px}
.rail-item:hover .rail-mini{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,82,217,.22)}
.rail-pop{position:absolute;right:calc(100% + 12px);top:50%;transform:translateY(-50%) translateX(8px);background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 16px;white-space:nowrap;box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transition:all .25s var(--ease)}
.rail-item:hover .rail-pop{opacity:1;visibility:visible;transform:translateY(-50%) translateX(0)}
.rail-pop b{display:block;font-size:13px;color:var(--ink);margin-bottom:3px}
.rail-pop p{font-size:13.5px;color:var(--brand);font-weight:700}
.rail-pop p span{font-size:11.5px;color:var(--ink-3);font-weight:400}
#toTop{display:none;position:fixed;right:22px;bottom:28px;width:46px;height:46px;border-radius:50%;background:#fff;border:1px solid var(--line);color:var(--brand);align-items:center;justify-content:center;box-shadow:var(--shadow);z-index:150;cursor:pointer;transition:all .25s}
#toTop:hover{background:var(--brand-soft)}
#toTop.show{display:flex}
#toTop svg{width:20px;height:20px}
/* ============ 响应式 ============ */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .scene-grid{grid-template-columns:1fr;gap:34px}
  .price-grid{grid-template-columns:repeat(3,1fr)}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .why-stats2{grid-template-columns:repeat(2,1fr);gap:26px 16px}
  .ob-links{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  section{padding:52px 0}
  .nav-menu{position:fixed;inset:68px 0 auto 0;background:#fff;flex-direction:column;padding:16px;gap:4px;box-shadow:var(--shadow-lg);display:none;max-height:calc(100vh - 68px);overflow:auto}
  .nav-menu.open{display:flex}
  .nav-item .drop{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;border:none;display:none;padding-left:14px}
  .nav-item.open .drop{display:block}
  .burger{display:flex}
  .nav-login{display:none}
  .hero{padding:118px 0 56px}
  .hero h1{font-size:29px}
  .hero-visual{min-height:0}
  .price-grid{grid-template-columns:1fr}
  .scene-chips{grid-template-columns:1fr}
  .feat-grid{grid-template-columns:1fr}
  .why-stats2{grid-template-columns:repeat(2,1fr);gap:26px 16px}
  .ob-steps{grid-template-columns:repeat(2,1fr);row-gap:26px}
  .ob-steps::before{display:none}
  .ob-links{grid-template-columns:1fr}
  .foot-strip{grid-template-columns:1fr 1fr;row-gap:18px}
  .cta-inner h2{font-size:24px}
  .cta-points{gap:10px 18px}
  .foot-grid{grid-template-columns:1fr}
  .side-rail{right:12px;gap:12px}
  .side-rail .rail-mini{width:44px;height:44px}
  .side-rail .rail-pill{width:52px;padding:14px 0;border-radius:28px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .rv{opacity:1;transform:none}
}