/* ═══ kirinrin.tech — 蒋鑫 独立软件开发服务 ═══════════════════ */

:root{
  --bg:#060709;
  --bg-2:#0A0C11;
  --panel:rgba(255,255,255,.028);
  --panel-2:rgba(255,255,255,.05);
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.15);
  --ink:#F3F4F6;
  --ink-2:#C3C8D2;
  --muted:#8A91A0;
  --dim:#5C6473;
  --ember:#FF5C39;
  --amber:#FFB43D;
  --gold:#FFD84D;
  --cobalt:#5B8CFF;
  --grad:linear-gradient(101deg,#FF5C39 0%,#FFB43D 52%,#FFD84D 100%);
  --grad-soft:linear-gradient(140deg,rgba(255,92,57,.16),rgba(255,216,77,.05));
  --serif:"Bricolage Grotesque","Noto Sans SC",-apple-system,sans-serif;
  --sans:"Noto Sans SC","Bricolage Grotesque",-apple-system,"Helvetica Neue",sans-serif;
  --mono:"IBM Plex Mono","SFMono-Regular",Menlo,monospace;
  --wrap:1200px;
  --ease:cubic-bezier(.22,.7,.28,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--sans);font-weight:300;font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img,svg{max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,h5{font-family:var(--serif);font-weight:600;line-height:1.16;letter-spacing:-.02em;margin:0}
p{margin:0}
ul,ol,dl{margin:0;padding:0;list-style:none}
.mono{font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase}
.wrap{width:min(100% - 2.5rem,var(--wrap));margin-inline:auto}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--bg);padding:.6rem 1rem;z-index:99}
.skip:focus{left:1rem;top:1rem}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px;border-radius:4px}

/* ── atmosphere ─────────────────────────────────── */
.grain{
  position:fixed;inset:0;z-index:2;pointer-events:none;opacity:.4;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
}
.ambient{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.orb{position:absolute;border-radius:50%;filter:blur(110px);opacity:.5}
.orb-a{width:52vw;height:52vw;top:-18vw;right:-12vw;background:radial-gradient(circle,rgba(255,92,57,.36),transparent 68%)}
.orb-b{width:44vw;height:44vw;top:54vh;left:-16vw;background:radial-gradient(circle,rgba(91,140,255,.24),transparent 68%)}
.orb-c{width:38vw;height:38vw;bottom:-14vw;right:4vw;background:radial-gradient(circle,rgba(255,180,61,.16),transparent 70%)}
main,.nav,.footer{position:relative;z-index:1}

/* ── nav ────────────────────────────────────────── */
.nav{position:sticky;top:0;z-index:40;backdrop-filter:blur(18px);background:rgba(6,7,9,.62);border-bottom:1px solid transparent;transition:border-color .3s,background .3s}
.nav.stuck{border-bottom-color:var(--line);background:rgba(6,7,9,.86)}
.nav-inner{display:flex;align-items:center;gap:2rem;height:70px}
.brand{display:flex;align-items:center;gap:.7rem;margin-right:auto}
.brand-mark{width:30px;height:30px;display:grid;place-items:center;flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-family:var(--serif);font-size:1.02rem;font-weight:700;letter-spacing:.04em}
.brand-text i{font-style:normal;font-size:.66rem;color:var(--dim);letter-spacing:.16em}
.nav-links{display:flex;gap:2rem}
.nav-links a{font-size:.85rem;color:var(--ink-2);position:relative;padding:.2rem 0;transition:color .25s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--grad);transition:width .35s var(--ease)}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:.9rem}
.lang{background:none;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-family:var(--mono);font-size:.68rem;letter-spacing:.08em;padding:.34rem .7rem;cursor:pointer;display:flex;gap:.3rem;transition:border-color .25s}
.lang:hover{border-color:var(--line-2)}
.lang-opt.is-on{color:var(--gold)}
.lang-sep{opacity:.35}

/* ── buttons ────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;gap:.55rem;font-family:var(--sans);font-size:.9rem;font-weight:500;padding:.85rem 1.5rem;border-radius:999px;border:1px solid var(--line-2);transition:transform .3s var(--ease),border-color .3s,background .3s,box-shadow .3s;white-space:nowrap}
.btn svg{width:15px;height:15px;transition:transform .3s var(--ease)}
.btn:hover svg{transform:translateX(3px)}
.btn-sm{padding:.5rem 1.05rem;font-size:.8rem}
.btn-primary{background:var(--grad);color:#140700;border-color:transparent;font-weight:700;box-shadow:0 8px 30px -12px rgba(255,140,60,.7)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 42px -14px rgba(255,140,60,.85)}
.btn-ghost{color:var(--ink-2)}
.btn-ghost:hover{border-color:var(--gold);color:var(--ink)}
.nav .btn-sm{border-color:var(--line-2);color:var(--ink-2)}
.nav .btn-sm:hover{border-color:var(--gold);color:var(--ink)}

/* ── hero ───────────────────────────────────────── */
.hero{padding:clamp(3.5rem,9vw,7rem) 0 clamp(3rem,7vw,5.5rem)}
.hero-grid{display:grid;grid-template-columns:1.13fr .87fr;gap:clamp(2rem,5vw,4.5rem);align-items:center}
.kicker{display:inline-flex;align-items:center;gap:.6rem;font-family:var(--mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-2);border:1px solid var(--line);border-radius:999px;padding:.4rem .95rem;background:var(--panel)}
.dot{width:6px;height:6px;border-radius:50%;background:#38E08A;box-shadow:0 0 0 0 rgba(56,224,138,.6);animation:pulse 2.4s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 8px rgba(56,224,138,0)}100%{box-shadow:0 0 0 0 rgba(56,224,138,0)}}
.hero h1{font-size:clamp(1.95rem,4.9vw,3.6rem);font-weight:800;letter-spacing:-.035em;margin:1.4rem 0 0}
.hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{margin-top:1.4rem;font-size:clamp(.98rem,1.35vw,1.1rem);color:var(--ink-2);max-width:34em;line-height:1.85}
.hero-cta{display:flex;flex-wrap:wrap;gap:.85rem;margin-top:2.1rem}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1.4rem;margin-top:3.2rem;padding-top:2rem;border-top:1px solid var(--line)}
.stats dt{font-family:var(--serif);font-size:clamp(1.5rem,2.7vw,2.05rem);font-weight:700;letter-spacing:-.03em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.stats dt sup{font-size:.5em;vertical-align:super}
.stats dd{margin:.45rem 0 0;font-size:.74rem;color:var(--muted);line-height:1.5}

/* ── hero viz ───────────────────────────────────── */
.viz-card{border:1px solid var(--line);border-radius:18px;background:linear-gradient(160deg,rgba(255,255,255,.045),rgba(255,255,255,.012));padding:1rem 1rem 0;box-shadow:0 40px 90px -50px rgba(0,0,0,.95),inset 0 1px 0 rgba(255,255,255,.06);overflow:hidden}
.viz-head{display:flex;align-items:center;gap:.6rem;padding:.2rem .35rem .9rem;border-bottom:1px solid var(--line);color:var(--dim)}
.viz-led{width:7px;height:7px;border-radius:50%;background:var(--ember);box-shadow:0 0 10px var(--ember);animation:blink 3s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.25}}
.pipeline{display:block;width:100%;height:auto;margin:.6rem 0 .2rem}
.pipeline .node rect{fill:rgba(255,255,255,.035);stroke:var(--line-2);stroke-width:1}
.pipeline .node-hot rect{fill:rgba(255,140,60,.09);stroke:rgba(255,180,61,.42)}
.pipeline .node text{fill:#D6DAE2;font-family:"Noto Sans SC",sans-serif;font-size:13px;font-weight:400;text-anchor:middle}
.pipeline .node-hot text{fill:#FFE3B8}
.pipeline .edge{stroke:rgba(255,255,255,.3);stroke-width:1.2;fill:none;stroke-dasharray:3 4}
.pipeline .edge-dim{stroke:rgba(91,140,255,.5)}
.pipeline .pkt{fill:var(--gold)}
.pipeline .pkt-cool{fill:var(--cobalt)}
.viz-foot{padding:.8rem .35rem 1rem;border-top:1px solid var(--line);color:var(--dim);font-size:.66rem}

/* ── sections ───────────────────────────────────── */
.section{padding:clamp(4rem,8.5vw,7.5rem) 0;position:relative}
.section-case{background:linear-gradient(180deg,transparent,rgba(255,255,255,.018) 12%,rgba(255,255,255,.018) 88%,transparent);border-block:1px solid var(--line)}
.sec-head{max-width:52rem;margin-bottom:clamp(2.5rem,5vw,4rem)}
.sec-no{display:block;color:var(--ember);margin-bottom:1rem;font-size:.68rem}
.sec-head h2,.about h2,.contact h2{font-size:clamp(1.8rem,3.6vw,2.7rem);font-weight:700;letter-spacing:-.03em}
.sec-sub{margin-top:1.1rem;color:var(--muted);font-size:1rem;max-width:44em;line-height:1.85}

/* ── cards ──────────────────────────────────────── */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem}
.card{position:relative;border:1px solid var(--line);border-radius:16px;padding:2rem 1.7rem 1.7rem;background:var(--panel);transition:border-color .4s,transform .4s var(--ease),background .4s;overflow:hidden}
.card::before{content:"";position:absolute;inset:0;background:var(--grad-soft);opacity:0;transition:opacity .45s;pointer-events:none}
.card:hover{transform:translateY(-4px);border-color:var(--line-2)}
.card:hover::before{opacity:1}
.card-feature{grid-column:span 3;display:grid;grid-template-columns:1fr 1fr;gap:.6rem 3rem;align-items:start;background:linear-gradient(120deg,rgba(255,92,57,.075),rgba(255,216,77,.02) 55%,transparent);border-color:rgba(255,180,61,.26)}
.card-feature .card-no{grid-column:1}
.card-feature h3{grid-column:1;grid-row:2}
.card-feature p{grid-column:2;grid-row:1/4;align-self:center}
.card-feature .chips{grid-column:1;grid-row:3}
.card-no{color:var(--dim);font-size:.66rem}
.card h3{margin:.9rem 0 .8rem;font-size:1.28rem;font-weight:600}
.card-feature h3{font-size:clamp(1.5rem,2.4vw,1.9rem);margin:.7rem 0 1.2rem}
.card p{color:var(--muted);font-size:.92rem;line-height:1.85;position:relative}
.chips{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:1.3rem;position:relative}
.chips li{font-family:var(--mono);font-size:.63rem;letter-spacing:.05em;color:var(--ink-2);border:1px solid var(--line);border-radius:6px;padding:.28rem .55rem;background:rgba(255,255,255,.02)}
.chips-lg li{font-size:.67rem;padding:.34rem .62rem}

/* ── case ───────────────────────────────────────── */
.case{display:grid;grid-template-columns:1.55fr .85fr;gap:clamp(1.5rem,4vw,3.5rem);align-items:start}
.case-tag{color:var(--amber);font-size:.66rem}
.case-main h3{margin:1rem 0 2.4rem;font-size:clamp(1.05rem,1.75vw,1.32rem);font-weight:400;line-height:1.75;color:var(--ink-2);letter-spacing:-.005em}
.case-block{margin-top:2.2rem;padding-top:1.6rem;border-top:1px solid var(--line)}
.case-block h4{font-size:.95rem;font-weight:600;color:var(--ink);margin-bottom:.9rem;display:flex;align-items:center;gap:.6rem}
.case-block h4::before{content:"";width:14px;height:2px;background:var(--grad);border-radius:2px}
.case-block p{color:var(--muted);font-size:.94rem;line-height:1.9}
.case-list{display:grid;gap:.85rem}
.case-list li{display:grid;grid-template-columns:9.5rem 1fr;gap:1.2rem;padding:.85rem 0;border-bottom:1px dashed rgba(255,255,255,.07);font-size:.92rem}
.case-list li:last-child{border-bottom:0}
.case-list b{font-weight:600;color:var(--gold);font-size:.88rem}
.case-list span{color:var(--muted);line-height:1.8}
.case-side{display:grid;gap:1rem;position:sticky;top:96px}
.panel{border:1px solid var(--line);border-radius:14px;padding:1.4rem 1.35rem;background:var(--panel)}
.panel h5{color:var(--dim);margin-bottom:1.1rem;font-weight:400}
.metrics li{display:flex;align-items:baseline;gap:.7rem;padding:.5rem 0;border-bottom:1px solid rgba(255,255,255,.05)}
.metrics li:last-child{border-bottom:0}
.metrics b{font-family:var(--serif);font-size:1.25rem;font-weight:700;letter-spacing:-.02em;min-width:4.2rem;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.metrics span{font-size:.8rem;color:var(--muted)}
.panel-quote{background:linear-gradient(140deg,rgba(255,92,57,.1),rgba(255,255,255,.015));border-color:rgba(255,180,61,.24)}
.panel-quote p{font-family:var(--serif);font-size:1rem;line-height:1.75;color:var(--ink-2);font-weight:400}

/* ── process ────────────────────────────────────── */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.step{background:var(--bg);padding:2rem 1.6rem 2.2rem;transition:background .4s}
.step:hover{background:var(--bg-2)}
.step-no{color:var(--ember);font-size:1.4rem;letter-spacing:0;display:block;margin-bottom:1.4rem;opacity:.75}
.step h3{font-size:1.1rem;font-weight:600;margin-bottom:.7rem}
.step p{color:var(--muted);font-size:.87rem;line-height:1.8}

/* ── about ──────────────────────────────────────── */
.about{display:grid;grid-template-columns:1.2fr .8fr;gap:clamp(2rem,5vw,4.5rem);align-items:start}
.about-copy p{color:var(--muted);font-size:1rem;line-height:1.95;margin-top:1.3rem;max-width:38em}
.about-copy h2{margin-top:1rem}
.tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:2rem}
.tags li{font-size:.78rem;color:var(--ink-2);border:1px solid var(--line);border-radius:999px;padding:.35rem .85rem;background:var(--panel)}
.idcard{border:1px solid var(--line-2);border-radius:18px;padding:1.8rem 1.6rem;background:linear-gradient(155deg,rgba(255,255,255,.06),rgba(255,255,255,.012));box-shadow:0 40px 80px -50px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.07);position:sticky;top:96px}
.idcard-top{color:var(--dim);padding-bottom:1.2rem;border-bottom:1px solid var(--line)}
.idcard-name{font-family:var(--serif);font-size:2.1rem;font-weight:700;letter-spacing:-.02em;margin:1.3rem 0 1.6rem;display:flex;align-items:baseline;gap:.7rem}
.idcard-rows{display:grid;gap:.1rem}
.idcard-rows>div{display:grid;grid-template-columns:4.2rem 1fr;gap:1rem;align-items:baseline;padding:.6rem 0;border-top:1px solid rgba(255,255,255,.055)}
.idcard-rows dt{color:var(--dim);font-size:.62rem}
.idcard-rows dd{margin:0;font-size:.86rem;color:var(--ink-2)}
.idcard-rows dd.ok{display:flex;align-items:center;gap:.5rem;color:#7FE9AF}

/* ── contact ────────────────────────────────────── */
.section-contact{border-top:1px solid var(--line);background:radial-gradient(120% 100% at 50% 0%,rgba(255,92,57,.09),transparent 62%)}
.contact{text-align:center;max-width:56rem;margin-inline:auto}
.contact .sec-no{color:var(--ember)}
.contact .sec-sub{margin-inline:auto}
.contact-links{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-top:2.8rem;text-align:left}
.clink{display:grid;grid-template-columns:1fr auto;align-items:center;gap:.2rem 1rem;border:1px solid var(--line);border-radius:14px;padding:1.3rem 1.5rem;background:var(--panel);transition:border-color .35s,transform .35s var(--ease),background .35s}
.clink:hover{border-color:var(--gold);transform:translateY(-3px);background:var(--panel-2)}
.clink-k{grid-column:1;color:var(--dim);font-size:.62rem}
.clink-v{grid-column:1;font-family:var(--serif);font-size:clamp(1rem,1.8vw,1.3rem);font-weight:600;letter-spacing:-.02em;margin-top:.2rem;word-break:break-all}
.clink-go{grid-column:2;grid-row:1/3;font-size:1.2rem;color:var(--dim);transition:color .3s,transform .3s var(--ease)}
.clink:hover .clink-go{color:var(--gold);transform:translateX(3px)}
.contact-note{margin-top:1.8rem;font-size:.84rem;color:var(--dim)}

/* ── footer ─────────────────────────────────────── */
.footer{border-top:1px solid var(--line);padding:2.2rem 0}
.footer-inner{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;color:var(--dim);font-size:.66rem}
.footer-meta{text-align:right}

/* ── reveal ─────────────────────────────────────── */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .85s var(--ease),transform .85s var(--ease)}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.09s}.d2{transition-delay:.18s}.d3{transition-delay:.27s}.d4{transition-delay:.36s}

/* ── responsive ─────────────────────────────────── */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr}
  .hero-viz{max-width:600px;margin-top:.5rem}
  .cards{grid-template-columns:repeat(2,1fr)}
  .card-feature{grid-column:span 2}
  .case{grid-template-columns:1fr}
  .case-side{position:static;grid-template-columns:1fr 1fr}
  .panel-quote{grid-column:span 2}
  .steps{grid-template-columns:repeat(2,1fr)}
  .about{grid-template-columns:1fr}
  .idcard{position:static;max-width:480px}
  .nav-links{display:none}
}
@media (max-width:720px){
  body{font-size:15px}
  .stats{grid-template-columns:repeat(2,1fr);gap:1.6rem 1rem}
  .cards,.card-feature{grid-template-columns:1fr}
  .card-feature>*{grid-column:1!important;grid-row:auto!important}
  .case-side{grid-template-columns:1fr}
  .panel-quote{grid-column:span 1}
  .steps{grid-template-columns:1fr}
  .case-list li{grid-template-columns:1fr;gap:.25rem}
  .contact-links{grid-template-columns:1fr}
  .footer-inner{flex-direction:column}
  .footer-meta{text-align:left}
  .hero-cta .btn{flex:1 1 auto;justify-content:center}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* EN mode: latin display font leads */
html[lang="en"] body{font-family:"Bricolage Grotesque","Noto Sans SC",-apple-system,sans-serif;font-weight:400}
html[lang="en"] .case-list li{grid-template-columns:11rem 1fr}
html[lang="en"] .pipeline .node text{font-size:12px}

/* ── 品牌字标 SIN ────────────────────────────────── */
.wm{
  font-family:var(--serif);font-weight:800;text-transform:uppercase;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  position:relative;display:inline-flex;align-items:center;white-space:nowrap;
}
.wm::after{
  content:"";width:.28em;height:.28em;border-radius:50%;flex:none;
  background:var(--gold);box-shadow:0 0 .7em var(--amber);
  margin-left:.06em;animation:blink 3s infinite;
}
/* 描边重影，只在大号字标上出现 */
.wm[data-text]::before{
  content:attr(data-text);position:absolute;left:0;top:0;z-index:-1;
  background:none;color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.16);
  transform:translate(.075em,.085em);pointer-events:none;
}
.wm-xs{font-size:.78rem;letter-spacing:.2em}
.wm-xs::after{display:none}
.wm-sm{font-size:1.12rem;letter-spacing:.24em}
.wm-xl{font-size:clamp(2.6rem,6vw,3.4rem);letter-spacing:.16em;line-height:1}
.wm-xl::after{margin-left:.1em;margin-bottom:-.05em}

.brand-mark{transition:transform .5s var(--ease)}
.brand:hover .brand-mark{transform:rotate(-8deg) scale(1.06)}
.brand-text i{margin-top:.1rem}
.idcard-name{display:block;margin:1.5rem 0 1.7rem}

/* ── 关于区块的巨型描边水印 ──────────────────────── */
.section-about{overflow:hidden}
.wm-watermark{
  position:absolute;right:-.05em;bottom:-.42em;z-index:0;pointer-events:none;user-select:none;
  font-family:var(--serif);font-weight:800;font-size:clamp(9rem,21vw,17rem);letter-spacing:.02em;
  line-height:.8;color:transparent;-webkit-text-stroke:1.5px rgba(255,255,255,.045);
}
.section-about .wrap{position:relative;z-index:1}
@media (max-width:720px){ .wm-watermark{display:none} }

/* ── 更多交付 ────────────────────────────────────── */
.works{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem}
.work{position:relative;border:1px solid var(--line);border-radius:16px;padding:1.8rem 1.6rem;background:var(--panel);overflow:hidden;transition:border-color .4s,transform .4s var(--ease)}
.work::before{content:"";position:absolute;inset:0;background:var(--grad-soft);opacity:0;transition:opacity .45s;pointer-events:none}
.work:hover{transform:translateY(-4px);border-color:var(--line-2)}
.work:hover::before{opacity:1}
.work>*{position:relative}
.work-year{display:block;color:var(--ember);font-size:.66rem;margin-bottom:1rem}
.work h3{font-size:1.14rem;font-weight:600;letter-spacing:-.02em}
.work p{color:var(--muted);font-size:.88rem;line-height:1.85}
.work-role{color:var(--dim);font-size:.62rem;margin:.4rem 0 1rem}

/* ── 职业履历时间轴 ──────────────────────────────── */
.section-cv{background:linear-gradient(180deg,transparent,rgba(255,255,255,.018) 12%,rgba(255,255,255,.018) 88%,transparent);border-block:1px solid var(--line)}
.timeline{display:block}
.tl{display:grid;grid-template-columns:8.5rem 1fr;padding-bottom:2.6rem}
.tl:last-child{padding-bottom:0}
.tl-when{color:var(--amber);padding-top:.15rem}
.tl-body{position:relative;border-left:1px solid rgba(255,255,255,.14);padding-left:2rem}
.tl-body::before{content:"";position:absolute;left:-4.5px;top:.5rem;width:8px;height:8px;border-radius:50%;background:var(--grad);box-shadow:0 0 0 4px var(--bg),0 0 12px rgba(255,140,60,.55)}
.tl-body h3{font-size:1.18rem;font-weight:600}
.tl-org{color:var(--dim);font-size:.82rem;margin:.45rem 0 1.15rem}
.tl-list{display:grid;gap:.6rem}
.tl-list li{position:relative;padding-left:1.05rem;color:var(--muted);font-size:.9rem;line-height:1.85}
.tl-list li::before{content:"";position:absolute;left:0;top:.78em;width:5px;height:5px;border-radius:50%;background:rgba(255,180,61,.55)}

/* ── 技术能力矩阵 ────────────────────────────────── */
.skills{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.skill{background:var(--bg);padding:1.7rem 1.4rem;transition:background .4s}
.skill:hover{background:var(--bg-2)}
.skill h4{font-size:.95rem;font-weight:600;margin-bottom:1.1rem;display:flex;align-items:center;gap:.55rem}
.skill h4::before{content:"";width:12px;height:2px;background:var(--grad);border-radius:2px;flex:none}
.skill .chips{margin-top:0}

@media (max-width:1024px){
  .works{grid-template-columns:repeat(2,1fr)}
  .skills{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  .works{grid-template-columns:1fr}
  .skills{grid-template-columns:1fr}
  .tl{grid-template-columns:1fr}
  .tl-when{padding-left:2rem;margin-bottom:.55rem}
}