:root{--bg: #fbfaf9;--bg-soft: #f5f1f1;--surface: #ffffff;--ink: #1b1417;--ink-2: #5e5459;--ink-3: #978d92;--line: #ebe5e6;--line-dash: #d9cfd2;--brand: #f2453d;--brand-ink: #d8312a;--brand-soft: #fff0ee;--brand-glow: rgba(242, 69, 61, .16);--plum: #241322;--plum-2: #3b1a33;--radius: 24px;--shadow: 0 1px 2px rgba(27, 20, 23, .04), 0 8px 28px rgba(27, 20, 23, .06);--shadow-lg: 0 2px 6px rgba(27, 20, 23, .05), 0 24px 60px rgba(27, 20, 23, .12);--font: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;--header-h: 64px;color-scheme:light}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 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#1b141738}.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink)}.btn-ghost:hover{border-color:#d6cdd0;box-shadow:var(--shadow)}.btn-light{background:#fff;color:var(--ink)}.btn-outline-light{border-color:#ffffff52;color:#fff}.btn-outline-light:hover{border-color:#ffffffb3}.btn[aria-disabled=true]{background:#eee9ea;color:var(--ink-3);box-shadow:none;transform:none;cursor:default}.site-header{position:sticky;top:0;z-index:50;height:var(--header-h);background:#fbfaf9d1;backdrop-filter:saturate(1.6) blur(14px);-webkit-backdrop-filter:saturate(1.6) blur(14px);border-bottom:1px solid transparent;transition:border-color .2s ease}.site-header.scrolled{border-bottom-color:var(--line)}.header-inner{display:flex;align-items:center;height:100%;gap:24px}.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:.02em}.brand img{width:32px;height:32px;border-radius:9px}.nav{display:flex;gap:4px;margin:0 auto}.nav a{padding:6px 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#3a2f3c,var(--shadow-lg)}.phone:after{content:"";position:absolute;top:19px;left:50%;width:84px;height:24px;transform:translate(-50%);border-radius:999px;background:#16101a}.phone-main{z-index:2}.phone-side{z-index:1;margin-top:64px}.phone-left{transform:rotate(-5deg) scale(.9);margin-right:-36px}.phone-right{transform:rotate(5deg) scale(.9);margin-left:-36px}.screen{position:relative;height:100%;padding:0 14px;border-radius:38px;background:#fff;overflow:hidden;font-size:11px;line-height:1.45;color:var(--ink)}.sb{display:flex;justify-content:space-between;align-items:center;height:44px;padding:0 14px;font-size:12px;font-weight:700}.sb i{width:22px;height:10px;border:1.5px solid var(--ink);border-radius:3px;box-shadow:inset 14px 0 0 -1px var(--ink)}.ph-head{display:flex;align-items:baseline;gap:6px;margin-top:4px}.ph-head b{font-size:19px;font-weight:800}.ph-head small{color:var(--ink-3);font-size:10px}.ph-head 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8px;border-radius:999px;background:#f4f1f2;color:var(--ink-3);font-size:9.5px;white-space:nowrap}.chip-hit{background:var(--brand-soft);color:var(--brand-ink);font-weight:700}.ph-add{margin-top:14px;padding:9px;border:1px dashed var(--line-dash);border-radius:12px;color:var(--ink-2);text-align:center}.pf{display:inline-grid;place-items:center;flex:none;width:15px;height:15px;border-radius:4px;color:#fff;font-size:9px;font-style:normal;font-weight:800;line-height:1}.pf-jd{background:#e1251b}.pf-tb{background:#ff5000}.pf-pdd{background:#e02e24}.pf-dy{background:#161823}.pf-vip{background:#f10180}.pf-mt{background:#ffc300;color:#3d2c00}.section{padding:112px 0}.section-soft{background:var(--bg-soft)}.section h2,.promise h2,.cta-band h2{font-size:clamp(28px,3.8vw,40px);font-weight:800;line-height:1.25;letter-spacing:-.005em}.sub{margin-top:12px;color:var(--ink-2);font-size:17px}.hint,.fine{margin-top:20px;color:var(--ink-3);font-size:13px;text-align:center}.fine{margin-top:28px}.platforms{padding-top:40px}.pf-row{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:16px}.pf-row:first-of-type{margin-top:40px}.pf-chip{display:inline-flex;align-items:center;gap:10px;padding:11px 20px;border:1px solid var(--line);border-radius:14px;background:var(--surface);font-size:16px;font-weight:600;box-shadow:0 1px 2px #1b141708}.pf-chip .pf{width:24px;height:24px;border-radius:7px;font-size:13px}.puzzle{display:grid;grid-template-columns:repeat(4,1fr);margin-top:56px;border:1.5px dashed var(--line-dash);border-radius:var(--radius)}.piece{position:relative;padding:36px 28px 34px;border-right:1.5px dashed var(--line-dash);border-bottom:1.5px dashed var(--line-dash);transition:background-color .2s ease}.piece:nth-child(4n){border-right:0}.piece:nth-last-child(-n+4){border-bottom:0}.piece:nth-child(1){border-top-left-radius:var(--radius)}.piece:nth-child(4){border-top-right-radius:var(--radius)}.piece:nth-child(5){border-bottom-left-radius:var(--radius)}.piece:nth-child(8){border-bottom-right-radius:var(--radius)}.piece:before,.piece:after{content:"";position:absolute;z-index:1;width:18px;height:18px;border:1.5px dashed var(--line-dash);border-radius:50%;background:var(--bg)}.piece:after{right:-10px;top:calc(50% - 9px)}.piece:before{left:calc(50% - 9px);bottom:-10px}.piece:nth-child(4n):after,.piece:nth-last-child(-n+4):before{display:none}.piece:hover{background:var(--surface)}.piece h3{margin-top:18px;font-size:18px;font-weight:700}.piece p{margin-top:8px;color:var(--ink-2);font-size:14.5px}.steps{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:56px;counter-reset:step}.steps:before{content:"";position:absolute;top:24px;left:12.5%;right:12.5%;border-top:1.5px dashed var(--line-dash)}.steps li{position:relative}.num{display:inline-grid;place-items:center;width:48px;height:48px;border:1.5px solid var(--line);border-radius:50%;background:var(--surface);color:var(--brand-ink);font-size:18px;font-weight:800;box-shadow:0 0 0 8px var(--bg-soft)}.steps .last .num{border-color:var(--brand);background:var(--brand);color:#fff;font-size:22px}.steps h3{margin-top:18px;font-size:18px;font-weight:700}.steps p{max-width:220px;margin:6px auto 0;color:var(--ink-2);font-size:14.5px}.promise{position:relative;padding:104px 0;background:radial-gradient(ellipse 60% 80% at 85% 10%,rgba(242,69,61,.28),transparent 60%),linear-gradient(160deg,var(--plum-2),var(--plum));color:#fff;overflow:hidden}.promise-inner{display:grid;grid-template-columns:1fr 1.25fr;gap:64px;align-items:center}.eyebrow-dark{border-color:#ffffff24;background:#ffffff0f;color:#fffc}.promise h2{margin-top:18px;font-size:clamp(34px,4.6vw,52px)}.promise-head p{margin-top:16px;color:#ffffffb8;font-size:16.5px}.promise-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.pcard{padding:26px 22px;border:1px solid rgba(255,255,255,.1);border-radius:20px;background:#ffffff0d}.pcard .ic{font-size:30px;--ic-acc: #ff7a6e}.pcard .ic.duo{color:#fff}.pcard h3{margin-top:16px;font-size:17px}.pcard p{margin-top:6px;color:#ffffffa8;font-size:14px}.seg{display:inline-flex;gap:4px;margin-top:36px;padding:4px;border-radius:999px;background:#eee8e9}.seg button{min-width:112px;padding:8px 26px;border:0;border-radius:999px;background:transparent;color:var(--ink-2);font-size:15px;font-weight:600;cursor:pointer;transition:background-color 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