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#e5e7eb;--max-width: 1200px;--header-height: 100px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 20px;--radius-xl: 28px;--shadow-sm: 0 2px 8px rgba(26, 29, 38, .06);--shadow-md: 0 8px 30px rgba(26, 29, 38, .08);--shadow-lg: 0 20px 50px rgba(26, 29, 38, .12);--shadow-glow: 0 12px 40px rgba(255, 101, 55, .18);--transition: .3s cubic-bezier(.4, 0, .2, 1);--section-pad: clamp(72px, 10vw, 110px)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:DM Sans,Microsoft YaHei,微软雅黑,system-ui,sans-serif;color:var(--text-dark);line-height:1.65;background-color:#f8f9fc;background-image:radial-gradient(ellipse 80% 50% at 50% -20%,rgba(255,101,55,.07),transparent),radial-gradient(circle at 100% 50%,rgba(255,138,101,.04),transparent 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var(--primary-glow);position:relative}.section-title__accent:after{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary-glow)}.section-title-wrap.center .section-title__accent{margin-left:auto;margin-right:auto}.btn-primary{display:inline-flex;align-items:center;justify-content:center;padding:14px 36px;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:var(--white);border:none;border-radius:var(--radius-sm);font-size:14px;font-weight:600;letter-spacing:.02em;cursor:pointer;transition:transform var(--transition),box-shadow var(--transition),filter var(--transition);box-shadow:0 4px 14px var(--primary-glow)}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow);filter:brightness(1.05)}.btn-primary:active{transform:translateY(0)}.btn-outline{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 32px;border:2px solid var(--primary);color:var(--primary);background:#fff9;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);border-radius:var(--radius-sm);font-size:14px;font-weight:600;letter-spacing:.02em;cursor:pointer;transition:all var(--transition)}.btn-outline:hover{background:var(--primary);color:var(--white);transform:translateY(-2px);box-shadow:var(--shadow-glow)}html[lang=en] .btn-outline:after{content:"→";transition:transform var(--transition)}html[lang=en] .btn-outline:hover:after{transform:translate(4px)}.surface-card{background:var(--white);border-radius:var(--radius-lg);border:1px solid rgba(255,255,255,.8);box-shadow:var(--shadow-sm)}