/* Rison Guan — Resume
   Clean, minimal, single-scroll layout. */

:root {
    --ink: #16181d;
    --body: #4b4f58;
    --muted: #8a8f98;
    --accent: #0077cc;
    --bg: #ffffff;
    --bg-soft: #f7f8fa;
    --border: #e6e8eb;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
}

body {
    background: var(--bg);
    color: var(--body);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

/* ---------- Header ---------- */

.site-header {
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.header-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 28px 24px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.identity h1 {
    margin: 0;
    font-size: 24px;
    color: var(--ink);
    letter-spacing: -0.01em;
}

.identity .title {
    margin: 2px 0 0;
    font-size: 14px;
    color: var(--accent);
    font-weight: 600;
}

.contact-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 20px;
    font-size: 13px;
    color: var(--muted);
}

.contact-list li {
    white-space: nowrap;
}

.contact-list a {
    color: var(--muted);
}

.contact-list a:hover {
    color: var(--accent);
    text-decoration: none;
}

.contact-list i {
    width: 14px;
    text-align: center;
    margin-right: 4px;
    color: var(--accent);
}

/* ---------- Main layout ---------- */

.resume {
    max-width: 1100px;
    margin: 0 auto;
    padding: 48px 24px 64px;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 60px;
}

.block {
    margin-bottom: 40px;
}

.block:last-child {
    margin-bottom: 0;
}

.block h2 {
    margin: 0 0 20px;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
    border-bottom: 2px solid var(--border);
    padding-bottom: 10px;
}

/* ---------- Sidebar ---------- */

.sidebar .edu-item h3 {
    margin: 0 0 4px;
    font-size: 16px;
    color: var(--ink);
}

.sidebar .edu-item .meta {
    margin: 0 0 8px;
    font-size: 13px;
    color: var(--muted);
}

.sidebar .edu-item .role {
    margin: 0 0 6px;
    font-style: italic;
    color: var(--body);
}

.sidebar .edu-item p {
    margin: 0 0 6px;
    font-size: 14px;
}

.skill-group {
    margin-bottom: 18px;
}

.skill-group:last-child {
    margin-bottom: 0;
}

.skill-group h3 {
    margin: 0 0 4px;
    font-size: 13px;
    color: var(--ink);
}

.skill-group p {
    margin: 0;
    font-size: 13px;
    color: var(--body);
    line-height: 1.6;
}

/* ---------- Content ---------- */

.content .block > p {
    margin: 0 0 14px;
}

.content .block > p:last-child {
    margin-bottom: 0;
}

.job {
    padding: 22px 0;
    border-bottom: 1px solid var(--border);
}

.job:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.job:first-child {
    padding-top: 0;
}

.job-head {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: baseline;
    gap: 8px 24px;
    margin-bottom: 12px;
}

.job-head h3 {
    margin: 0 0 2px;
    font-size: 17px;
    color: var(--ink);
}

.job-head .company {
    margin: 0;
    font-size: 14px;
    color: var(--body);
}

.job-head .company span {
    color: var(--muted);
}

.job-head .dates {
    margin: 0;
    font-size: 13px;
    color: var(--muted);
    text-align: right;
    line-height: 1.5;
}

.job ul li {
    position: relative;
    padding-left: 16px;
    margin-bottom: 8px;
    font-size: 14px;
    line-height: 1.7;
}

.job ul li:last-child {
    margin-bottom: 0;
}

.job ul li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 9px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent);
}

/* ---------- Footer ---------- */

.site-footer {
    border-top: 1px solid var(--border);
    background: var(--bg-soft);
}

.site-footer .footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 28px 24px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.site-footer p {
    margin: 0;
    font-size: 13px;
    color: var(--muted);
}

.site-footer ul {
    display: flex;
    gap: 16px;
}

.site-footer a {
    color: var(--muted);
    font-size: 16px;
}

.site-footer a:hover {
    color: var(--accent);
}

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
    .resume {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 36px 20px 48px;
    }

    .header-inner {
        padding: 20px;
    }

    .job-head .dates {
        text-align: left;
    }
}

@media (max-width: 480px) {
    .identity h1 {
        font-size: 20px;
    }

    .contact-list {
        font-size: 12px;
    }
}