/* 用途：首页与关于页的共享视觉层；内容及业务链接仍由原 HTML 维护。 */
.portal-page {
  --ink-2: #62615e;
  --ink-3: #777570;
  --border: #dedbd4;
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  isolation: isolate;
}
.portal-page .wrap { max-width: 1200px; padding-inline: 40px; }
.portal-page a:focus-visible, .portal-page button:focus-visible {
  outline: 2px solid var(--coral); outline-offset: 5px;
}
.portal-page .nav { background: rgba(248,247,244,.86); }
.portal-page .nav-inner { height: 84px; gap: 24px; }
.portal-page .nav-logo { font-size: 1.25rem; letter-spacing: -.055em; }
.portal-page .nav-logo-sub { font-style: normal; font-size: .65rem; margin-top: 5px; letter-spacing: .025em; }
.portal-page .nav-links { gap: 32px; }
.portal-page .nav-links a { position: relative; padding-block: 12px; }
.portal-page .nav-links a::after {
  content: ''; position: absolute; left: 0; bottom: 5px; width: 100%; height: 1px;
  background: var(--coral); transform: scaleX(0); transform-origin: left; transition: transform .25s ease;
}
.portal-page .nav-links a:hover::after, .portal-page .nav-links a.active::after { transform: scaleX(1); }
.portal-page #lang-toggle {
  background: transparent; border: 1px solid var(--border); border-radius: 3px;
  padding: 9px 12px; font: inherit; font-size: .72rem; color: var(--fg); cursor: pointer; min-height: 40px;
}
.portal-page .hero { position: relative; padding: 104px 0 100px; }
.portal-home .hero-grid { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 48px; align-items: center; }
.portal-page .eyebrow { font-size: .66rem; font-weight: 500; letter-spacing: .16em; color: var(--ink-2); margin-bottom: 22px; }
.portal-home .hero-title { min-width: 0; overflow-wrap: break-word; font-size: clamp(3.5rem,6.2vw,5.7rem); line-height: 1.2; font-weight: 600; letter-spacing: -.065em; }
.portal-home .hero-line:last-child { color: var(--coral); }
.portal-home .hero-summary { max-width: 460px; font-size: 1rem; line-height: 1.95; color: var(--ink-2); margin-top: 30px; }
.portal-page .hero-cta { margin-top: 34px; gap: 12px; }
.portal-page .btn-primary, .portal-page .btn-secondary, .portal-page .btn-solid, .portal-page .btn-outline {
  min-height: 48px; border-radius: 3px; padding: 13px 23px;
}
.portal-page .btn-primary svg, .portal-page .btn-link svg { transition: transform .25s ease; }
.portal-page .btn-primary:hover svg, .portal-page .btn-link:hover svg { transform: translateX(3px); }
.portal-home .hero-meta { text-align: center; }
.portal-home .hero-name { font-size: 1rem; margin-top: 4px; font-weight: 500; }
.portal-home .hero-role { font-size: .7rem; letter-spacing: .04em; }
/* 用途：以个人身份和已有领域介绍替代单个工具的首屏展示。 */
.portal-home .hero-profile { min-width: 0; text-align: left; border-top: 2px solid var(--coral); padding: 24px 0; }
.portal-home .hero-profile-name { font-size: clamp(2.2rem, 4vw, 3.5rem); font-weight: 600; }
.portal-home .hero-profile-role { color: var(--ink-2); margin-top: 8px; }
.portal-home .hero-profile-fields { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 32px; color: var(--ink-2); font-size: .9rem; }

/* 用途：柔和光场位于内容后方，不拦截鼠标或触控事件。 */
.ambient-background { position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.ambient-glow {
  position: absolute; width: min(90vw,1000px); height: min(90vw,1000px); top: -140px; left: calc(50% - 180px);
  background: radial-gradient(ellipse at center,rgba(232,112,70,.09),rgba(232,152,108,.025) 42%,transparent 68%);
  transform: translate3d(var(--glow-x,0px),var(--glow-y,0px),0);
}
.orbital-art { position: relative; width: 100%; max-width: 430px; aspect-ratio: 1; margin: -24px auto 4px; perspective: 850px; }
.orbital-plane {
  width: 100%; height: 100%; position: relative; transform-style: preserve-3d;
  transform: rotateX(var(--tilt-y,0deg)) rotateY(var(--tilt-x,0deg)) translate3d(var(--art-x,0px),var(--art-y,0px),0);
}
.orbital-plane::before {
  content: ''; position: absolute; inset: 13%; border-radius: 50%;
  background: radial-gradient(circle,rgba(230,119,74,.12),transparent 70%);
}
.orbit { position: absolute; inset: 9%; border: 1px solid rgba(128,97,72,.2); border-radius: 50%; }
.orbit-one { transform: rotate(-35deg) scaleY(.45); }
.orbit-two { transform: rotate(35deg) scaleY(.45); }
.orbit-three { inset: 19%; border-color: rgba(128,97,72,.1); }
.orbital-core {
  position: absolute; inset: 32%; display: grid; place-items: center; border-radius: 50%;
  background: radial-gradient(circle at 30% 22%,#f5bc91 0%,#eb7142 44%,#b73d21 86%);
  box-shadow: inset -8px -12px 22px rgba(80,28,13,.18),0 22px 50px -22px rgba(141,57,18,.35);
  color: #fff3e6;
}
.orbital-core svg { width: 43%; }
.orbit-node { position: absolute; width: 7px; height: 7px; border-radius: 50%; background: #d6633e; box-shadow: 0 0 0 5px rgba(214,99,62,.06); }
.node-one { left: 19%; top: 26%; }
.node-two { right: 12%; top: 62%; width: 5px; height: 5px; background: #656058; }
.node-three { left: 27%; bottom: 20%; width: 5px; height: 5px; }
.orbit-label { position: absolute; font-size: .55rem; letter-spacing: .14em; color: #797367; }
.label-one { left: 4%; top: 19%; }
.label-two { right: 1%; top: 71%; }
.label-three { left: 15%; bottom: 12%; }

/* 用途：两列项目板块和编辑式分隔，保持信息密度与留白平衡。 */
.portal-page .sec-head { padding: 64px 0 34px; align-items: flex-end; }
.portal-page .sec-head .eyebrow { margin-bottom: 12px; }
.portal-page .sec-head h2 { font-size: 1.85rem; font-weight: 500; letter-spacing: -.04em; }
.portal-page .section-note { font-size: .8rem; color: var(--ink-2); padding-bottom: 5px; }
.portal-home .services-grid { grid-template-columns: 1fr 1fr; gap: 16px; padding-bottom: 80px; }
.portal-home .services-grid .service-item {
  border: 1px solid var(--border); padding: 32px; border-radius: 4px; min-height: 250px;
  background: rgba(255,255,255,.28); position: relative;
  transition: transform .3s ease,border-color .3s ease,background .3s ease,box-shadow .3s ease;
}
.portal-home .service-item:not(.disabled):hover, .portal-home .service-item:focus-visible {
  transform: translateY(-4px); border-color: rgba(196,89,51,.45); background: rgba(255,255,255,.72);
  box-shadow: 0 16px 34px -26px rgba(48,34,21,.25);
}
.portal-home .service-num { font-size: .68rem; letter-spacing: .08em; margin-bottom: 24px; }
.portal-home .service-name { font-size: 1.2rem; font-weight: 500; justify-content: space-between; }
.portal-home .service-name .arrow { opacity: 1; }
.portal-home .service-desc { max-width: 430px; font-size: .85rem; }
.portal-home .service-price { color: var(--coral-ink); font-size: .76rem; font-weight: 500; }
.portal-home .service-item.disabled { opacity: 1; background: rgba(238,237,233,.5); }
.portal-home .about-grid { gap: 72px; padding: 12px 0 88px; align-items: start; }
.portal-home .about-body { font-size: .94rem; line-height: 1.95; }
.portal-home .stats-grid { border: 1px solid var(--border); }
.portal-home .stat-n { font-size: 2.5rem; font-weight: 500; }
.portal-home .stat-cell, .portal-home .stat-cta { padding: 30px; min-height: 150px; }
.portal-home .stat-cta:hover { transform: none; background: #d83c19; }
.portal-home .stat-cta .label { color: var(--fg); }
.portal-page .footer-inner { padding-block: 32px; }

/* 用途：关于页移除肖像后，以经历数据和文字形成左右两栏。 */
.profile-page .hero-grid { grid-template-columns: 1.6fr 1fr; gap: 72px; }
.profile-page .quote { font-weight: 500; font-size: clamp(2rem,3.5vw,3.2rem); line-height: 1.45; }
.profile-page .body-text { max-width: 590px; }
.profile-page .profile-facts { border-top: 2px solid var(--coral); padding-top: 24px; }
.profile-page .stat-grid { border: none; gap: 1px; }
.profile-page .stat-item { padding: 36px 20px; text-align: left; }
.profile-page .stat-num { font-size: 2.3rem; font-weight: 500; }
.profile-page .stat-label { color: var(--ink-2); margin-top: 14px; }
.profile-page .doing-grid { grid-template-columns: 1fr 1fr; }
.profile-page .sec-title { font-weight: 500; }
.profile-page .exp-item { transition: background .25s ease; }
.profile-page .exp-item:hover { background: rgba(255,255,255,.45); }
.profile-page .cta-banner { border-radius: 4px; }

@media (max-width: 820px) {
  .portal-page .wrap { padding-inline: 24px; }
  .portal-page .nav-inner { height: auto; min-height: 76px; flex-wrap: wrap; gap: 4px 16px; padding: 14px 0 8px; align-items: center; }
  .portal-page .nav-logo { flex: 1; font-size: 1.12rem; }
  .portal-page .nav-links { order: 3; width: 100%; gap: 24px; padding: 0; }
  .portal-page .nav-logo-sub { font-size: .56rem; }
  .portal-page .nav-icons { gap: 12px; }
  .portal-page .nav-icons > a { display: none; }
  .portal-page .hero { padding: 60px 0 64px; }
  .portal-home .hero-grid, .profile-page .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .portal-home .hero-title { font-size: clamp(3.2rem,10vw,4.8rem); }
  .portal-home .hero-summary { font-size: .92rem; }
  .portal-home .hero-meta { display: block; text-align: left; }
  .portal-home .orbital-art { grid-row: span 2; width: min(100%,230px); margin: -20px 0; }
  .portal-home .hero-name { align-self: end; }
  .portal-home .hero-role { align-self: start; max-width: 180px; }
  .portal-page .sec-head { padding: 48px 0 28px; align-items: start; }
  .portal-home .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .portal-home .stats-grid { grid-template-columns: 1fr 1fr; }
  .portal-home .services-grid { padding-bottom: 56px; }
  .profile-page .profile-facts { max-width: 520px; order: 0; }
  .profile-page .footer-inner { align-items: start; }
}
@media (max-width: 560px) {
  .portal-home .hero-title { font-size: clamp(2.3rem, 10.5vw, 2.6rem); letter-spacing: -.035em; }
  .portal-home .services-grid, .profile-page .doing-grid { grid-template-columns: 1fr; }
  .portal-home .services-grid .service-item { padding: 26px; min-height: 0; }
  .portal-page .section-note { display: none; }
  .portal-home .stat-cell, .portal-home .stat-cta { padding: 23px; min-height: 135px; }
  .portal-home .stat-n { font-size: 2.15rem; }
  .portal-home .hero-cta { gap: 10px; }
  .portal-page .btn-primary, .portal-page .btn-secondary { padding-inline: 18px; font-size: .8rem; }
  .portal-page .nav-logo-sub { max-width: 200px; }
  .profile-page .quote { font-size: 1.9rem; }
}
/* 用途：系统减弱动态效果时关闭位移和过渡，内容始终可见。 */
@media (prefers-reduced-motion: reduce) {
  .portal-page *, .portal-page *::before, .portal-page *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .portal-page .orbital-plane, .portal-page .ambient-glow, .portal-page .service-item { transform: none !important; }
}

/* 用途：仅调整首页的信息层次，沿用网站既有颜色与字体。 */
.portal-home .hero { padding: 112px 0 96px; }
.portal-home .hero-grid { grid-template-columns: minmax(0, 1.7fr) minmax(220px, .65fr); align-items: end; gap: 60px; }
.portal-home .hero-title { font-size: clamp(3.7rem, 7vw, 6.4rem); line-height: 1.12; }
.portal-home .hero-profile { border-top: 1px solid var(--fg); padding: 22px 0 0; }
.portal-home .hero-profile-name { font-size: clamp(2rem, 3vw, 3rem); }
.portal-home .hero-profile-fields { display: grid; gap: 0; margin-top: 28px; }
.portal-home .hero-profile-fields span { padding: 12px 0; border-top: 1px solid var(--border); }
.portal-home .home-experience { background: var(--fg); color: var(--bg); }
.portal-home .experience-layout { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 80px; padding-block: 100px; }
.portal-home .experience-intro h2 { max-width: 440px; font-size: clamp(2.1rem, 3.5vw, 3.5rem); font-weight: 500; line-height: 1.3; }
.portal-home .experience-intro p { max-width: 380px; margin: 24px 0; color: var(--bg); line-height: 1.8; }
.portal-home .experience-intro .btn-link { color: var(--bg); }
.portal-home .experience-row { display: grid; grid-template-columns: 42px minmax(0, 1fr); gap: 16px; padding: 24px 0; border-top: 1px solid var(--ink-2); }
.portal-home .experience-index { color: var(--bg); font-size: .8rem; }
.portal-home .experience-row h3 { font-size: 1.25rem; font-weight: 500; }
.portal-home .experience-row p { margin-top: 10px; color: var(--bg); line-height: 1.8; }
.portal-home #services .services-grid { display: block; }
.portal-home #services .services-grid .service-item { display: grid; grid-template-columns: 56px minmax(150px, .7fr) minmax(0, 1.3fr) auto; gap: 24px; align-items: start; min-height: 0; padding: 30px 0; border: 0; border-top: 1px solid var(--border); border-radius: 0; background: transparent; }
.portal-home #services .service-num, .portal-home #services .service-desc { margin: 0; }
.portal-home #services .service-item:hover { transform: none; box-shadow: none; }
.portal-home #projects .services-grid { gap: 0; }
.portal-home #projects .services-grid .service-item { border-radius: 0; min-height: 300px; padding: 36px; }
.portal-home #projects .services-grid .service-item:first-child { background: var(--secondary); }
.portal-home #projects .service-name { font-size: clamp(1.5rem, 2.4vw, 2.3rem); }
.portal-home #projects .service-desc { font-size: 1rem; line-height: 1.8; }
@media (max-width: 820px) {
  .portal-home .hero { padding: 72px 0; }
  .portal-home .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .portal-home .hero-title { font-size: clamp(2.8rem, 8vw, 4.5rem); }
  .portal-home .experience-layout { grid-template-columns: 1fr; gap: 40px; padding-block: 72px; }
  .portal-home #services .services-grid .service-item { grid-template-columns: 32px minmax(0, 1fr); gap: 12px; }
  .portal-home #services .service-desc, .portal-home #services .service-price { grid-column: 2; }
}
@media (max-width: 560px) {
  .portal-home .hero-title { font-size: clamp(2.2rem, 10vw, 2.6rem); }
  .portal-home #projects .services-grid .service-item { min-height: 0; padding: 28px; }
}

/* 用途：用真实的技术领域与交互入口组织首页首屏。 */
.portal-home .hero-stage { background: var(--fg); color: var(--bg); position: relative; overflow: clip; }
.portal-home .hero-stage::before { content: ''; position: absolute; top: 0; bottom: 0; left: 50%; width: 1px; background: var(--ink-2); opacity: .3; pointer-events: none; }
.portal-home .hero { min-height: 630px; display: flex; align-items: center; padding: 100px 0; }
.portal-home .hero-grid { width: 100%; grid-template-columns: minmax(0, 1.5fr) minmax(240px, .6fr); gap: 80px; align-items: end; }
.portal-home .hero-title { font-size: clamp(3.2rem, 6.5vw, 6rem); font-weight: 700; line-height: 1.13; letter-spacing: -.055em; }
.portal-home .hero-line:last-child { color: var(--bg); }
.portal-home .hero-summary { color: var(--bg); opacity: .8; }
.portal-home .hero-stage .btn-primary { background: var(--coral); color: var(--fg); }
.portal-home .hero-stage .btn-secondary { border-color: var(--ink-2); color: var(--bg); }
.portal-home .hero-stage .btn-secondary:hover { background: var(--ink-2); }
.portal-home .hero-profile { border-top: 2px solid var(--coral); }
.portal-home .hero-profile-role { color: var(--bg); opacity: .8; }
.portal-home .hero-profile-fields a { display: block; padding: 14px 0; border-top: 1px solid var(--ink-2); color: var(--bg); transition: color .2s ease, transform .2s ease; }
.portal-home .hero-profile-fields a:hover { color: var(--coral); transform: translateX(6px); }
.portal-home .home-experience { background: var(--bg); color: var(--fg); }
.portal-home .experience-intro p, .portal-home .experience-intro .btn-link { color: var(--ink-2); }
.portal-home .experience-list { border-bottom: 1px solid var(--border); }
.portal-home .experience-row { display: block; border-top: 1px solid var(--border); padding: 0; }
.portal-home .experience-row summary { display: grid; grid-template-columns: 42px minmax(0,1fr) 32px; gap: 16px; align-items: center; cursor: pointer; padding: 25px 0; font-size: clamp(1.2rem,2vw,1.6rem); list-style: none; }
.portal-home .experience-row summary::-webkit-details-marker { display: none; }
.portal-home .experience-row summary:focus-visible { outline: 2px solid var(--coral); outline-offset: 3px; }
.portal-home .experience-index { color: var(--ink-2); }
.portal-home .experience-toggle { color: var(--coral-ink); font-size: 1.7rem; transition: transform .25s ease; }
.portal-home .experience-row[open] .experience-toggle { transform: rotate(45deg); }
.portal-home .experience-row p { margin: 0 0 24px 58px; max-width: 490px; color: var(--ink-2); }
@media (max-width: 820px) {
  .portal-home .hero-stage::before { display: none; }
  .portal-home .hero { min-height: 0; padding: 72px 0; }
  .portal-home .hero-grid { grid-template-columns: 1fr; gap: 52px; }
  .portal-home .hero-title { font-size: clamp(2.5rem, 8vw, 4.5rem); }
}
@media (max-width: 560px) {
  .portal-home .hero-title { font-size: clamp(2.25rem, 10vw, 2.8rem); }
  .portal-home .experience-row summary { grid-template-columns: 28px minmax(0,1fr) 24px; gap: 10px; }
  .portal-home .experience-row p { margin-left: 38px; }
}
@media (prefers-reduced-motion: reduce) {
  .portal-home .hero-profile-fields a, .portal-home .experience-toggle { transition: none; }
}

/* 用途：将个人技术方向做成可点击的导航图，圆环仅作视觉辅助。 */
.portal-home .hero-profile { position: relative; width: min(100%, 440px); aspect-ratio: 1; border: 0; padding: 0; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; isolation: isolate; }
.portal-home .hero-profile::before, .portal-home .hero-profile::after { content: ''; position: absolute; z-index: -1; inset: 12%; border: 1px solid var(--ink-2); border-radius: 50%; pointer-events: none; }
.portal-home .hero-profile::after { inset: 23%; border-color: var(--coral); opacity: .65; }
.portal-home .hero-profile-name { font-size: clamp(2rem, 3vw, 3rem); }
.portal-home .hero-profile-role { margin-top: 4px; }
.portal-home .hero-profile-fields { display: contents; }
.portal-home .hero-profile-fields a { position: absolute; padding: 8px 14px; border: 1px solid var(--ink-2); background: var(--fg); border-radius: 24px; font-size: .82rem; white-space: nowrap; }
.portal-home .hero-profile-fields a:nth-child(1) { top: 5%; left: 50%; transform: translateX(-50%); }
.portal-home .hero-profile-fields a:nth-child(2) { left: 0; bottom: 18%; }
.portal-home .hero-profile-fields a:nth-child(3) { right: 0; bottom: 18%; }
.portal-home .hero-profile-fields a:hover { transform: translateY(-4px); border-color: var(--coral); color: var(--bg); }
.portal-home .hero-profile-fields a:nth-child(1):hover { transform: translate(-50%, -4px); }
@media (prefers-reduced-motion: no-preference) {
  .portal-home .hero-profile::after { animation: profile-orbit 12s ease-in-out infinite alternate; }
  @keyframes profile-orbit { from { transform: scale(.95); opacity: .35; } to { transform: scale(1.08); opacity: .8; } }
}
@media (max-width: 820px) {
  .portal-home .hero-profile { width: min(100%, 380px); margin: 0 auto; text-align: center; }
}