/* 紫苏子ACG · 个人网站 v2
   ─────────────────────────────────────────────────────────
   视觉语言对齐 Hermes Agent 官网的排版美学：
     高饱和纯色硬切分区（无渐变过渡）· 衬线超大字 · 全站直角 ·
     1px 细线代替投影 · 极端字号对比（hero → legend）· 宽字距 mono 小标
   配色取自线条头像：头像深紫 #474980 / 青 #3AD9E8 / 朱砂 #C8453E / 墨黑 #0B0912 / 纯白
   ───────────────────────────────────────────────────────── */

:root {
  --violet:   #474980;
  --violet-d: #33355c;
  --cyan:     #3AD9E8;
  --seal:     #C8453E;
  --ink:      #0B0912;
  --white:    #FFFFFF;
  --paper:    #F2EFFA;

  --serif: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans:  "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --mono:  "SF Mono", ui-monospace, "JetBrains Mono", Menlo, monospace;

  /* 极端字号体系 */
  --t-hero:   clamp(46px, 7vw, 102px);
  --t-h2:     clamp(34px, 5vw, 70px);
  --t-h3:     clamp(22px, 2.4vw, 32px);
  --t-num:    clamp(40px, 4.6vw, 64px);
  --t-lead:   clamp(16px, 1.45vw, 19px);
  --t-body:   16px;
  --t-label:  13px;
  --t-mono:   11px;

  --sec-pad: clamp(76px, 9vw, 148px);

  --bg: var(--ink); --fg: var(--paper);
  --line: rgba(255,255,255,.22); --line-soft: rgba(255,255,255,.12);
  --accent: var(--cyan); --btn-bg: var(--white); --btn-fg: var(--ink);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; -webkit-text-size-adjust: 100%; }
body {
  background: var(--ink); color: var(--paper);
  font-family: var(--sans); font-size: var(--t-body); line-height: 1.7;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; overflow-x: hidden;
}
img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
.wrap { width: min(1320px, 91vw); margin: 0 auto; }
.hero-in > *, .about > *, .work > *, .services > *, .contact > *, .stats > * { min-width: 0; }

/* ============ 区块主题 ============ */
.on-violet { --bg: var(--violet); --fg: #fff; --line: rgba(255,255,255,.34);
             --line-soft: rgba(255,255,255,.16); --accent: #a8aaf0;
             --btn-bg: #fff; --btn-fg: var(--violet); }
.on-white  { --bg: #FCFBF8; --fg: #191621; --line: rgba(11,9,18,.26);
             --line-soft: rgba(11,9,18,.13); --accent: var(--violet);
             --btn-bg: var(--violet); --btn-fg: #fff; }
.on-ink    { --bg: var(--ink); --fg: var(--paper); --line: rgba(255,255,255,.24);
             --line-soft: rgba(255,255,255,.11); --accent: var(--cyan);
             --btn-bg: #fff; --btn-fg: var(--ink); }

/* 新品牌紫与墨黑亮度接近（2.38:1），靠 1px 细线把分区边界压实 */
.on-violet { border-top: 1px solid rgba(255,255,255,.16);
             border-bottom: 1px solid rgba(255,255,255,.16); }

/* ============ 按钮（直角、无投影）============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid transparent; border-radius: 0; cursor: pointer;
  font: 600 var(--t-label)/1 var(--sans); letter-spacing: .08em;
  padding: 15px 28px; transition: background .18s, color .18s, border-color .18s;
}
.btn-primary { background: var(--btn-bg); color: var(--btn-fg); }
.btn-primary:hover { background: var(--accent); color: var(--ink); }
.btn-ghost { background: transparent; color: var(--fg); border-color: var(--line); }
.btn-ghost:hover { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.btn-sm { padding: 10px 18px; font-size: 12px; background: transparent; color: #fff; border-color: rgba(255,255,255,.4); }
.btn-sm:hover { background: #fff; color: var(--ink); }
.link-btn { border: 0; background: none; color: inherit; cursor: pointer; padding: 0 0 2px;
            font: 600 12px var(--mono); letter-spacing: .12em; text-transform: uppercase;
            border-bottom: 1px solid currentColor; }

/* ============ 印章（本身即硬边方块，保留）============ */
.seal { display: inline-flex; align-items: center; justify-content: center;
        width: 42px; height: 42px; background: var(--seal); color: #fff;
        font: 700 13px/1.02 var(--serif); text-align: center; letter-spacing: .04em; flex-shrink: 0; }
.seal.small { width: 34px; height: 34px; font-size: 11px; }

/* ============ 导航（悬浮透明 → 滚动变实色）============ */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 30; border-bottom: 1px solid transparent;
       transition: background .25s, border-color .25s, backdrop-filter .25s; }
.nav.solid { background: rgba(11,9,18,.92); border-bottom-color: rgba(255,255,255,.14);
             backdrop-filter: blur(16px) saturate(140%); }
.nav-in { display: flex; align-items: center; gap: 32px; height: 78px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { width: 38px; height: 38px; border-radius: 50%; object-fit: cover; flex-shrink: 0;
              border: 1px solid rgba(255,255,255,.45); }
.brand-mark-sm { width: 34px; height: 34px; }
.brand-name { font: 700 15px var(--sans); letter-spacing: .1em; }
.links { display: flex; gap: 30px; margin-left: auto; }
.links a { font: 600 12px var(--mono); letter-spacing: .2em; text-transform: uppercase; opacity: .78; transition: opacity .16s; }
.links a:hover { opacity: 1; }
.lang { border: 1px solid rgba(255,255,255,.4); background: transparent; color: #fff; cursor: pointer;
        padding: 8px 14px; border-radius: 0; font: 600 11px var(--mono); letter-spacing: .16em; transition: .18s; }
.lang:hover { background: #fff; color: var(--ink); }
/* 背景音乐开关：与 .lang 同族的硬边方块控件，内嵌 lucide 图标 */
.icon-btn { display: inline-flex; align-items: center; justify-content: center;
            width: 38px; padding: 6px; flex-shrink: 0;
            border: 1px solid rgba(255,255,255,.4); background: transparent; color: #fff;
            cursor: pointer; border-radius: 0; transition: .18s; }
.icon-btn:hover { background: #fff; color: var(--ink); }
.icon-btn:focus-visible { outline: 1px solid var(--seal); outline-offset: 2px; }
.icon-btn svg { width: 17px; height: 17px; display: block; }
.bgm-btn .i-off { display: none; }
.bgm-btn[aria-pressed="false"] .i-on { display: none; }
.bgm-btn[aria-pressed="false"] .i-off { display: block; }
@keyframes bgm-live { 0%, 100% { opacity: 1; } 50% { opacity: .42; } }
.bgm-btn[aria-pressed="true"] .i-on { animation: bgm-live 2.6s ease-in-out infinite; }
@media (prefers-reduced-motion: reduce) {
  .bgm-btn[aria-pressed="true"] .i-on { animation: none; }
}

/* ============ HERO：沉浸式背景视频 ============ */
.hero { position: relative; overflow: hidden; isolation: isolate; background: var(--ink);
        min-height: 94svh; display: flex; flex-direction: column; justify-content: center; }
.hero-video { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0;
              object-fit: cover; pointer-events: none;
              filter: saturate(.92) brightness(.86) contrast(1.05); }
.hero-veil { position: absolute; inset: 0; z-index: 1; pointer-events: none;
             background:
               radial-gradient(60% 80% at 20% 48%, rgba(11,9,18,.93) 0%, rgba(11,9,18,.80) 38%,
                               rgba(11,9,18,.30) 70%, rgba(11,9,18,0) 100%),
               linear-gradient(90deg, rgba(11,9,18,.60) 0%, rgba(11,9,18,.16) 40%,
                               rgba(11,9,18,0) 58%),
               linear-gradient(180deg, rgba(11,9,18,.52) 0%, rgba(11,9,18,.04) 20%,
                               rgba(11,9,18,.06) 62%, rgba(71,73,128,.78) 90%, var(--violet) 100%); }
.hero-in { position: relative; z-index: 2; display: block; padding: 152px 0 64px; }
.hero-text { max-width: 640px; }
.hero-text .eyebrow { display: block; margin-bottom: 30px; color: #fff;
                      font-family: var(--mono); font-size: var(--t-mono); font-weight: 600;
                      letter-spacing: .26em; text-transform: uppercase; opacity: .78; }
.hero h1 { font-family: var(--serif); font-weight: 900; color: #fff;
           font-size: var(--t-hero); line-height: 1.02; letter-spacing: -.015em; }
.hero h1 em { font-style: normal; color: var(--cyan); }
.lead { font-family: var(--serif); font-size: var(--t-lead); line-height: 1.85; color: rgba(255,255,255,.86);
        margin: 32px 0 38px; max-width: 30em; line-break: strict; }
.d-br { display: inline; }

.trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin: 0 0 42px; max-width: 580px;
        background: rgba(255,255,255,.24); border: 1px solid rgba(255,255,255,.24); }
.trio .t { background: rgba(11,9,18,.58); padding: 22px 20px; backdrop-filter: blur(8px); }
.trio b { display: block; font: 900 30px/1 var(--serif); color: #fff; letter-spacing: .04em; margin-bottom: 10px; }
.trio span { font: 500 12.5px var(--sans); color: rgba(255,255,255,.85); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-cta .btn-primary { background: #fff; color: var(--ink); }
.hero-cta .btn-primary:hover { background: var(--cyan); color: var(--ink); }
.hero-cta .btn-ghost { border-color: rgba(255,255,255,.45); color: #fff; }
.hero-cta .btn-ghost:hover { background: #fff; color: var(--ink); }

/* 简介横条（落在「相逢」区）：头像 + 三栏数据 */
.profile-bar { display: grid; grid-template-columns: auto 1fr; gap: clamp(24px, 3vw, 48px);
               align-items: center; border: 1px solid var(--line);
               padding: clamp(26px, 3vw, 42px); margin-bottom: 24px; }
.profile-bar .avatar { width: clamp(104px, 10vw, 138px); height: clamp(104px, 10vw, 138px);
                       object-fit: cover; border: 1px solid var(--line); }
.profile-bar .p-name { font: 900 clamp(26px, 2.6vw, 36px)/1.1 var(--serif); letter-spacing: -.01em; }
.profile-bar .p-role { font: 500 13px var(--sans); opacity: .7; margin: 10px 0 22px; }
.profile-bar .p-list { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr);
                       border-top: 1px solid var(--line); }
.profile-bar .p-list li { padding: 16px 22px 0 0; }
.profile-bar .p-list li + li { border-left: 1px solid var(--line-soft); padding-left: 22px; }
.profile-bar .p-list b { display: block; font: 900 clamp(18px, 1.8vw, 24px)/1 var(--serif);
                         color: var(--accent); margin-bottom: 9px; }
.profile-bar .p-list span { font-size: 13px; line-height: 1.55; opacity: .82; }

/* 视频上的线描台阶（简化为纯白细线） */
.hero-art { position: relative; z-index: 2; margin-top: -10px; }
.hero-art svg { display: block; width: 100%; height: clamp(150px, 21vw, 300px); }
.hero-art .stairs-line { filter: none !important; opacity: .5; }
.hero-art polyline { stroke: rgba(255,255,255,.72) !important; }
.stars circle { fill: #fff; opacity: .42; }
.beads circle { fill: var(--cyan); filter: drop-shadow(0 0 6px rgba(58,217,232,.9)); }
.trail { stroke: rgba(255,255,255,.5); stroke-dasharray: 7 9; }
.trail-end { fill: var(--cyan); }

/* ============ 板块通用 ============ */
.sec { background: var(--bg); color: var(--fg); padding: var(--sec-pad) 0; }

.step-mark { display: flex; align-items: center; gap: 16px; margin-bottom: 34px;
             padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.step-mark .stairs { display: inline-flex; align-items: flex-end; gap: 2px; height: 20px; }
.step-mark .stairs i { width: 7px; background: var(--line); }
.step-mark .stairs i:nth-child(1) { height: 6px; } .step-mark .stairs i:nth-child(2) { height: 11px; }
.step-mark .stairs i:nth-child(3) { height: 16px; } .step-mark .stairs i:nth-child(4) { height: 20px; }
.step-mark[data-step="1"] .stairs i:nth-child(-n+1),
.step-mark[data-step="2"] .stairs i:nth-child(-n+2),
.step-mark[data-step="3"] .stairs i:nth-child(-n+3),
.step-mark[data-step="4"] .stairs i:nth-child(-n+4) { background: var(--accent); }
.step-mark > span:not(.stairs) { font: 700 14px var(--sans); letter-spacing: .04em; }
.step-mark small { font: 600 var(--t-mono) var(--mono); letter-spacing: .26em; text-transform: uppercase;
                   opacity: .6; margin-left: auto; }
.sec h2 { font-family: var(--serif); font-weight: 900; font-size: var(--t-h2);
          line-height: 1.06; letter-spacing: -.012em; margin-bottom: 46px; max-width: 20em; }
.sub-head { font: 700 15px var(--sans); letter-spacing: .06em; margin: 68px 0 0;
            padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.fine { font: 500 12px var(--mono); letter-spacing: .04em; opacity: .6; margin-top: 22px; }

/* ============ 数字条（Hermes 特性栏式）============ */
/* 紫块由 #facts + #road 两段拼成，收紧各自的纵向 padding 避免中间出现大片空白 */
#facts { padding: clamp(56px, 6vw, 96px) 0 clamp(30px, 3.6vw, 52px); }
#road  { padding-top: clamp(34px, 4.2vw, 62px); }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.stat { padding: 42px 30px 46px 0; border-right: 1px solid var(--line-soft); }
.stat:last-child { border-right: 0; }
.stat b { display: block; font: 900 var(--t-num)/1 var(--serif); letter-spacing: -.02em; }
.stat b i { font-style: normal; font-size: .42em; margin-left: 4px; opacity: .7; }
.stat span { display: block; margin-top: 16px; font: 500 13px var(--sans); opacity: .74; }

/* ============ 第一阶 · 来路 ============ */
.about { display: grid; grid-template-columns: 1.35fr .95fr; gap: clamp(32px, 5vw, 80px); align-items: start; }
.about-text p { font-family: var(--serif); font-size: clamp(17px, 1.5vw, 21px); line-height: 1.8;
                margin-bottom: 20px; opacity: .9; }
blockquote { margin-top: 38px; padding: 28px 0 0; border-top: 1px solid var(--line);
             font: 900 clamp(22px, 2.6vw, 34px)/1.35 var(--serif); letter-spacing: -.01em; }
.day { border: 1px solid var(--line); padding: 34px 30px; }
.day-title { font: 900 clamp(24px, 2.4vw, 32px)/1.1 var(--serif); }
.day-sub { font: 600 var(--t-mono) var(--mono); letter-spacing: .18em; text-transform: uppercase;
           opacity: .62; margin: 14px 0 26px; }
.timeline { list-style: none; }
.timeline li { display: flex; gap: 20px; align-items: baseline; padding: 16px 0;
               border-bottom: 1px solid var(--line-soft); }
.timeline li:last-child { border-bottom: 0; }
.timeline time { font: 900 22px/1 var(--serif); min-width: 88px; letter-spacing: -.01em; }
.timeline span { font-size: 15px; opacity: .86; }
.day-note { margin-top: 24px; padding-top: 22px; border-top: 1px solid var(--line);
            font-size: 14px; opacity: .7; }

/* ============ 第二阶 · 所铸（纯白反转区）============ */
.work { display: grid; border: 1px solid var(--line); margin-bottom: 24px; align-items: stretch; }
.work-main { grid-template-columns: 380px 1fr; }
.work-second { grid-template-columns: 1fr 1.05fr; }
.work-media { position: relative; display: flex; flex-direction: column; background: var(--ink); }
.media-code { justify-content: center; padding: 0; }
.term-bar { display: flex; align-items: center; gap: 7px; padding: 13px 18px;
            border-bottom: 1px solid rgba(255,255,255,.12); }
.term-bar i { width: 9px; height: 9px; border-radius: 50%; background: rgba(255,255,255,.2); }
.term-bar i:nth-child(1) { background: var(--violet); }
.term-bar i:nth-child(2) { background: var(--cyan); }
.term-bar span { margin-left: 10px; font: 600 10px var(--mono); letter-spacing: .2em;
                 text-transform: uppercase; color: rgba(255,255,255,.5); }
.media-code pre { padding: 30px 26px 36px; font: 400 13.5px/2.05 var(--mono); color: #C9BFF0; overflow-x: auto; }
.media-code .c1 { color: var(--cyan); } .media-code .c2 { color: #F0B65A; }
.media-code .c3 { color: #46499e; } .media-code .c4 { color: #5FE08A; }
.media-code .c5 { color: var(--cyan); } .media-code .c6 { color: #5FE08A; }

.work-body { padding: clamp(28px, 3vw, 46px); display: flex; flex-direction: column; justify-content: center; }
.tag { display: inline-block; align-self: flex-start; font: 700 11px var(--mono); letter-spacing: .2em;
       text-transform: uppercase; background: var(--fg); color: var(--bg); padding: 7px 12px; margin-bottom: 22px; }
.tag-soft { background: transparent; color: var(--fg); border: 1px solid var(--line); }
.work h3 { font: 900 var(--t-h3)/1.15 var(--serif); letter-spacing: -.01em; margin-bottom: 12px; }
.work p { opacity: .84; }
.tagline { font: 900 clamp(19px, 2vw, 26px)/1.35 var(--serif) !important; margin-bottom: 16px; letter-spacing: -.01em; }
.star-big { margin: 28px 0 22px; padding-top: 22px; border-top: 1px solid var(--line); }
.star-big b { font: 900 clamp(38px, 4.4vw, 58px)/1 var(--serif); margin-right: 12px; letter-spacing: -.02em; }
.star-big span { font: 600 var(--t-mono) var(--mono); letter-spacing: .18em; text-transform: uppercase; opacity: .62; }
.repos { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
         background: var(--line-soft); border: 1px solid var(--line-soft); }
.repos li { background: var(--bg); padding: 14px 16px; }
.repos span { display: block; font: 600 10px var(--mono); letter-spacing: .16em; text-transform: uppercase;
              opacity: .55; margin-bottom: 7px; }
.repos b { font: 700 16px var(--serif); }
.work-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

.media-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: rgba(255,255,255,.11); padding: 0; }
.g-item { background: var(--ink); padding: 28px 24px; }
.g-item b { display: block; font: 900 20px/1.2 var(--serif); color: #fff; margin-bottom: 6px; }
.g-item span { font: 600 10px var(--mono); letter-spacing: .18em; text-transform: uppercase; color: rgba(255,255,255,.45); }

.shelf { list-style: none; display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); }
.shelf li { border-bottom: 1px solid var(--line-soft); }
.shelf li:nth-child(odd) { border-right: 1px solid var(--line-soft); }
.shelf a { display: grid; grid-template-columns: 1fr auto; gap: 4px 16px; align-items: center;
           padding: 24px 26px 24px 0; transition: padding-left .18s, background .18s; }
.shelf li:nth-child(even) a { padding-left: 26px; padding-right: 0; }
.shelf a:hover { background: var(--line-soft); }
.s-name { font: 700 16px var(--serif); grid-column: 1; }
.s-star { grid-row: 1 / span 2; grid-column: 2; font: 900 20px var(--serif); }
.s-star.zero { opacity: .3; }
.s-desc { grid-column: 1; font-size: 13px; opacity: .7; }

/* ============ 第三阶 · 可托（墨底）============ */
.services { display: grid; grid-template-columns: 1.25fr 1fr; border: 1px solid var(--line); }
.svc { padding: clamp(28px, 3vw, 46px); display: flex; flex-direction: column; }
.svc + .svc { border-left: 1px solid var(--line); }
.svc-main { background: rgba(71,73,128,.22); }
.svc h3 { font: 900 clamp(24px, 2.7vw, 36px)/1.15 var(--serif); margin-bottom: 16px; letter-spacing: -.01em; }
.svc-who { font-size: 15.5px; opacity: .84; }
.svc-list { list-style: none; margin: 28px 0; }
.svc-list li { padding: 15px 0; border-top: 1px solid var(--line-soft); font-size: 15px; }
.svc-list b { display: inline-block; min-width: 86px; font: 700 12px var(--mono); letter-spacing: .16em;
              text-transform: uppercase; color: var(--accent); margin-right: 14px; vertical-align: 1px; }
.svc-meta { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 20px;
            font: 600 11px var(--mono); letter-spacing: .12em; text-transform: uppercase; opacity: .68;
            margin: auto 0 26px; padding-top: 22px; border-top: 1px solid var(--line); }

/* ============ 第四阶 · 相逢（紫底）============ */
.contact { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
           background: var(--line-soft); border: 1px solid var(--line); }
.ct { background: var(--bg); padding: 34px 30px; text-align: left; }
.ct-title { font: 900 22px/1.1 var(--serif); margin-bottom: 26px; padding-bottom: 18px;
            border-bottom: 1px solid var(--line); }
.qr { display: block; width: 100%; max-width: 190px; aspect-ratio: 1; background: #fff;
      object-fit: contain; margin-bottom: 22px; }
.ct-id { font: 700 15px var(--sans); word-break: break-all; }
.ct-links { display: flex; flex-direction: column; }
.ct-links .ct-title { margin-bottom: 10px; }
.ct-links a { display: flex; justify-content: space-between; gap: 12px; padding: 16px 0;
              border-bottom: 1px solid var(--line-soft); font: 600 14px var(--sans); transition: padding-left .16s; }
.ct-links a span { font: 600 10px var(--mono); letter-spacing: .16em; text-transform: uppercase; opacity: .62; }
.ct-links a:hover { padding-left: 6px; }
.ct .fine { margin-top: 18px; }

/* ============ 页脚 ============ */
.foot { background: var(--ink); border-top: 1px solid var(--line-soft); }
.foot-in { display: flex; align-items: center; gap: 18px; padding: 42px 0; flex-wrap: wrap; }
.foot-slogan { font: 700 15px var(--serif); }
.foot-slogan em { display: block; font: 600 10px var(--mono); letter-spacing: .2em; text-transform: uppercase;
                  opacity: .5; margin-top: 8px; font-style: normal; }
.foot-copy { margin-left: auto; font: 600 10px var(--mono); letter-spacing: .18em;
             text-transform: uppercase; opacity: .55; }

/* ============ 复制提示 ============ */
.toast { position: fixed; left: 50%; bottom: 36px; transform: translate(-50%, 20px);
         background: var(--violet); color: #fff; padding: 15px 28px;
         font: 600 13px var(--sans); letter-spacing: .04em; opacity: 0; pointer-events: none;
         transition: .24s; z-index: 60; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ============ 入场 / 动效 ============ */
.js .reveal { opacity: 0; transform: translateY(20px);
              transition: opacity .7s cubic-bezier(.2,.7,.3,1), transform .7s cubic-bezier(.2,.7,.3,1); }
.js .reveal.in { opacity: 1; transform: none; }
.trail { animation: trail 4s linear infinite; }
@keyframes trail { to { stroke-dashoffset: -64; } }
.beads circle { animation: bead 2.6s ease-in-out infinite; }
.beads circle:nth-child(2) { animation-delay: .3s; }
.beads circle:nth-child(3) { animation-delay: .6s; }
.beads circle:nth-child(4) { animation-delay: .9s; }
.beads circle:nth-child(5) { animation-delay: 1.2s; }
.beads circle:nth-child(6) { animation-delay: 1.5s; }
@keyframes bead { 0%, 100% { opacity: .5; } 50% { opacity: 1; } }

@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .trail, .beads circle { animation: none !important; }
  .hero-video { display: none; }
}

/* ============ 响应式 ============ */
@media (max-width: 980px) {
  .hero { min-height: auto; }
  .hero-in { padding-top: 118px; }
  .profile-bar { grid-template-columns: 1fr; }
  .profile-bar .p-list { grid-template-columns: 1fr; }
  .profile-bar .p-list li { padding: 14px 0 0; }
  .profile-bar .p-list li + li { border-left: 0; border-top: 1px solid var(--line-soft);
                                 padding-left: 0; margin-top: 4px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat { padding: 30px 22px 34px 0; }
  .stat:nth-child(2n) { border-right: 0; padding-right: 0; }
  .about, .services, .work-main, .work-second { grid-template-columns: 1fr; }
  .svc + .svc { border-left: 0; border-top: 1px solid var(--line); }
  .contact { grid-template-columns: 1fr; }
  .shelf { grid-template-columns: 1fr; }
  .shelf li:nth-child(odd) { border-right: 0; }
  .shelf li:nth-child(even) a { padding-left: 0; padding-right: 26px; }
  .links { display: none; }
  .lang { margin-left: auto; }
  .nav-in { gap: 14px; }
  .repos { grid-template-columns: 1fr; }
  .d-br { display: none; }
  .foot-copy { margin-left: 0; width: 100%; }
}
@media (max-width: 560px) {
  .brand-name { display: none; }
  .icon-btn { width: 34px; padding: 5px; }
  .trio { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .stat { border-right: 0; border-bottom: 1px solid var(--line-soft); padding-right: 0; }
}

/* ============ 英文版微调 ============ */
.is-en .lead, .is-en .about-text p, .is-en .brand-name, .is-en .work p { font-family: var(--sans); }
.is-en .hero h1 { font-size: clamp(38px, 5.6vw, 82px); letter-spacing: -.022em; }
.is-en .sec h2, .is-en .work h3, .is-en .p-name { letter-spacing: -.02em; }
.is-en .step-mark small { letter-spacing: .2em; }