:root{--md-primary:#6200ee;--md-primary-dark:#3700b3;--md-primary-light:#bb86fc;--md-secondary:#03dac6;--md-secondary-dark:#018786;--md-secondary-light:#00bfa5;--md-background:#fff;--md-surface:#fff;--md-surface-variant:#f5f5f5;--md-on-primary:#fff;--md-on-secondary:#000;--md-on-background:#000;--md-on-surface:#1a1a1a;--md-on-surface-variant:#444;--md-outline:#79747e;--md-outline-variant:#c9ccd1;--md-error:#b00020;--md-on-error:#fff;--md-font-family:"Roboto", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--md-font-family);background-color:var(--md-background);color:var(--md-on-background);padding-top:70px;line-height:1.5}.md-card{background-color:var(--md-surface);border-radius:12px;transition:box-shadow .3s;overflow:hidden;box-shadow:0 2px 10px #0000001a,0 4px 20px #0000000d}.md-card:hover{box-shadow:0 4px 15px #00000026,0 8px 30px #0000001a}.md-card-content{padding:24px}.md-card-title{color:var(--md-on-surface);align-items:center;margin-bottom:16px;font-size:1.5rem;font-weight:500;display:flex}.md-card-title i{color:var(--md-primary);margin-right:8px;font-size:1.2rem}.md-card-subtitle{color:var(--md-on-surface-variant);margin-bottom:20px;font-size:1rem}.md-button{cursor:pointer;border:none;border-radius:4px;outline:none;justify-content:center;align-items:center;min-height:36px;padding:0 16px;font-size:.875rem;font-weight:500;text-decoration:none;transition:all .2s;display:inline-flex}.md-button.primary{background-color:var(--md-primary);color:var(--md-on-primary)}.md-button.primary:hover{background-color:var(--md-primary-dark)}.md-button.secondary{color:var(--md-primary);border:1px solid var(--md-primary);background-color:#0000}.md-button.secondary:hover{background-color:#6200ee0a}.md-button.outlined{color:var(--md-on-surface);border:1px solid 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12px;font-size:.8125rem}}.md-icon{vertical-align:middle;margin-right:8px;font-size:1.25rem;display:inline-block}.md-icon.primary{color:var(--md-primary)}.md-icon.secondary{color:var(--md-secondary)}.icon-home:before{content:"🏠"}.icon-about:before{content:"ℹ️"}.icon-portfolio:before{content:"📁"}.icon-contact:before{content:"📧"}.icon-github:before{content:"🐙"}.icon-mail:before{content:"✉️"}.icon-link:before{content:"🔗"}.md-icon:before{display:inline-block}*{box-sizing:border-box}body{margin:0;padding-top:70px;font-family:Inter,Microsoft YaHei,Segoe UI,sans-serif}.navbar{z-index:1000;-webkit-backdrop-filter:blur(18px)saturate(150%);background:#fafcffc7;border-bottom:1px solid #6b829e29;width:100%;padding:0 24px;position:fixed;top:0;left:0;box-shadow:0 8px 28px #1a31500b}.nav-container{align-items:center;gap:28px;max-width:1180px;height:70px;margin:0 auto;display:flex}.logo{color:#1d2c40;flex-shrink:0;align-items:center;gap:11px;text-decoration:none;display:inline-flex}.logo-mark{color:#fff;letter-spacing:.03em;background:#2867c8;border-radius:10px;place-items:center;width:42px;height:34px;font-size:.76rem;font-weight:800;display:grid;box-shadow:0 7px 18px #2563eb33}.logo-name{flex-direction:column;font-size:.88rem;font-weight:800;line-height:1.25;display:flex}.logo-name small{color:#8794a7;letter-spacing:.12em;margin-top:3px;font-size:.48rem;font-weight:700}.nav-menu{align-items:center;gap:4px;margin:0 auto;padding:0;list-style:none;display:flex}.nav-link{color:#536278;border-radius:9px;align-items:center;padding:9px 13px;font-size:.84rem;font-weight:600;text-decoration:none;transition:color .2s,background .2s;display:inline-flex;position:relative}.nav-link:hover{color:#2563eb;background:#2563eb0f}.nav-github{color:#f6f9fd;background:#162337;border-radius:11px;flex-shrink:0;align-items:center;gap:7px;min-height:38px;padding:0 15px;font-size:.76rem;font-weight:700;text-decoration:none;transition:background .18s;display:inline-flex}.nav-github:hover{background:#24334a}.hamburger{cursor:pointer;background:0 0;border:0;border-radius:10px;place-items:center;width:42px;height:42px;padding:9px;display:none;position:relative}.bar{background:#25364d;border-radius:999px;width:22px;height:2px;transition:top .2s,transform .2s,opacity .18s;display:block;position:absolute;left:10px}.bar:first-child{top:13px}.bar:nth-child(2){top:20px}.bar:nth-child(3){top:27px}@media (width<=800px){.nav-container{justify-content:space-between}.nav-github{margin-left:auto}.hamburger{display:block}.nav-menu{visibility:hidden;opacity:0;background:#fffffff7;border:1px solid #6b829e2b;border-radius:17px;gap:3px;padding:10px;transition:opacity .18s,visibility .18s;display:grid;position:absolute;top:62px;left:16px;right:16px;box-shadow:0 10px 28px #1830501a}.nav-menu.active{visibility:visible;opacity:1}.nav-link{width:100%;padding:12px 14px}.hamburger.active .bar:first-child{top:20px;transform:rotate(45deg)}.hamburger.active .bar:nth-child(2){opacity:0}.hamburger.active .bar:nth-child(3){top:20px;transform:rotate(-45deg)}}@media (width<=520px){.navbar{padding:0 16px}.nav-container{gap:8px}.logo-name{font-size:.8rem}.logo-name small,.nav-github{display:none}}@media (prefers-reduced-motion:reduce){.bar,.nav-github,.nav-link,.nav-menu{transition:none}}