/* ============================================================
   起源先科 · 企业网站
   设计语言取自《企业介绍 v5.1》：暖白纸面 / 砖红 / 钢青 / 宋体标题
   ============================================================ */

:root{
  --paper:      #FBFAF8;
  --paper-2:    #F3EFE8;
  --paper-3:    #EDE7DE;
  --ink:        #17161A;
  --ink-2:      #2C2B30;
  --body:       #4B4742;
  --muted:      #8B857D;
  --line:       #E2DCD2;
  --line-soft:  #EDE8E0;

  --red:        #B0453A;
  --red-deep:   #8E362C;
  --red-soft:   #D8A79F;
  --blue:       #3E6E9C;
  --blue-deep:  #2F567C;
  --blue-soft:  #A9BFD3;

  --serif: "Songti SC", "Source Han Serif SC", "Source Han Serif CN", "Noto Serif SC",
           "STZhongsong", "STSong", "SimSun", "Times New Roman", serif;
  --sans:  "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC",
           "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;

  --nav-h: 78px;
  --wrap:  1240px;
  --gut:   40px;

  --ease: cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{ box-sizing:border-box; }

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:var(--nav-h);
}

body{
  margin:0;
  background:var(--paper);
  color:var(--body);
  font-family:var(--sans);
  font-size:15.5px;
  line-height:1.95;
  letter-spacing:.012em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

img{ max-width:100%; display:block; }
svg{ display:block; }
a{ color:inherit; text-decoration:none; }
p{ margin:0; }
h1,h2,h3,h4{ margin:0; font-weight:400; color:var(--ink); font-family:var(--serif); }

::selection{ background:rgba(176,69,58,.16); color:var(--ink); }

/* 左侧细红边 —— 取自原 PPT 版式签名 */
.edge-bar{
  position:fixed; left:0; top:0; bottom:0; width:3px;
  background:linear-gradient(180deg,var(--red) 0%,var(--red) 62%,rgba(176,69,58,.15) 100%);
  z-index:120; pointer-events:none;
}

.wrap{
  width:100%; max-width:var(--wrap);
  margin:0 auto; padding:0 var(--gut);
}

/* ============================ NAV ============================ */
.nav{
  position:fixed; inset:0 0 auto 0; height:var(--nav-h); z-index:100;
  display:flex; align-items:center;
  border-bottom:1px solid transparent;
  transition:background .45s var(--ease), border-color .45s var(--ease), backdrop-filter .45s;
}
.nav.is-stuck{
  background:rgba(251,250,248,.88);
  backdrop-filter:blur(14px) saturate(1.1);
  -webkit-backdrop-filter:blur(14px) saturate(1.1);
  border-bottom-color:var(--line);
}

.nav-inner{
  width:100%; max-width:var(--wrap); margin:0 auto; padding:0 var(--gut);
  display:flex; align-items:center; gap:24px;
}

.brand{ display:flex; align-items:center; gap:11px; flex:0 0 auto; }
.brand-mark{ height:36px; width:auto; }
.brand-type{ display:flex; flex-direction:column; line-height:1.22; }
.brand-type strong{
  font-family:var(--serif); font-size:17.5px; letter-spacing:.15em;
  color:var(--ink); font-weight:700;
}
.brand-type em{
  font-style:normal; font-size:7.5px; letter-spacing:.18em;
  color:var(--muted); margin-top:4px;
}

.nav-links{
  margin-left:auto; display:flex; align-items:center; gap:30px;
}
.nav-links a{
  position:relative; font-size:13.5px; letter-spacing:.09em; color:var(--ink-2);
  padding:6px 0; transition:color .3s;
}
.nav-links a::after{
  content:""; position:absolute; left:0; right:100%; bottom:0; height:1px;
  background:var(--red); transition:right .38s var(--ease);
}
.nav-links a:hover{ color:var(--red); }
.nav-links a:hover::after,
.nav-links a.is-active::after{ right:0; }
.nav-links a.is-active{ color:var(--red); }

.nav-cta{
  flex:0 0 auto; margin-left:8px;
  border:1px solid var(--ink); color:var(--ink);
  font-size:13px; letter-spacing:.1em;
  padding:9px 20px; border-radius:2px;
  transition:background .35s var(--ease), color .35s var(--ease), border-color .35s;
}
.nav-cta:hover{ background:var(--ink); color:var(--paper); }

.nav-toggle{
  display:none; margin-left:auto;
  width:40px; height:40px; border:0; background:none; cursor:pointer;
  position:relative;
}
.nav-toggle span{
  position:absolute; left:9px; right:9px; height:1.4px; background:var(--ink);
  transition:transform .4s var(--ease), opacity .3s;
}
.nav-toggle span:nth-child(1){ top:16px; }
.nav-toggle span:nth-child(2){ top:23px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1){ transform:translateY(3.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2){ transform:translateY(-3.5px) rotate(-45deg); }

/* ============================ HERO ============================ */
.hero{
  position:relative; min-height:100vh; min-height:100svh;
  display:grid; grid-template-columns:52% 48%;
  padding-top:var(--nav-h);
  background:var(--paper);
  overflow:hidden;
}
.hero::before{
  content:""; position:absolute; inset:0 48% 0 0;
  background:url("../img/texture.png") no-repeat left -180px bottom -260px / 760px auto;
  mix-blend-mode:multiply; opacity:.52; pointer-events:none;
}

.hero-copy{
  position:relative; z-index:2;
  display:flex; flex-direction:column; justify-content:center;
  padding:clamp(40px,5.4vw,96px) clamp(28px,4.6vw,80px) clamp(56px,7vw,110px) clamp(32px,7.2vw,132px);
}

.hero-kicker{
  font-size:12px; letter-spacing:.42em; color:var(--red);
  font-family:var(--sans); margin-bottom:clamp(22px,3vw,40px);
}
.hero-kicker .slash{ color:var(--line); margin:0 10px; letter-spacing:0; }

.hero-title{ display:block; line-height:1.08; }
.hero-name{
  display:block;
  font-size:clamp(50px,6.6vw,96px);
  font-weight:700; letter-spacing:.1em; color:var(--ink);
  margin-left:-.04em;
}
.hero-company{
  display:block;
  font-size:clamp(17px,2.1vw,31px);
  letter-spacing:.2em; color:var(--ink-2); font-weight:400;
  margin-top:clamp(14px,1.7vw,26px);
}

.hero-rule{
  display:block; width:78px; height:2px; background:var(--red);
  margin:clamp(28px,3.6vw,44px) 0 clamp(22px,2.6vw,32px);
}

.hero-lead{
  font-family:var(--serif);
  font-size:clamp(16px,1.55vw,20.5px);
  line-height:2.15; letter-spacing:.13em; color:var(--ink-2);
  max-width:26em;
}

.hero-meta{
  margin-top:clamp(48px,6.4vw,92px);
  display:flex; flex-direction:column; gap:4px;
  font-size:12.5px; letter-spacing:.1em; color:var(--muted);
}
.hero-year{ letter-spacing:.3em; }

.hero-visual{
  position:relative; margin:0; overflow:hidden;
  background:#fff;
}
.hero-visual img{
  width:100%; height:100%; object-fit:cover; object-position:38% 42%;
  transform:scale(1.01);
}
.hero-visual::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(90deg,var(--paper) 0%,rgba(251,250,248,.35) 11%,rgba(251,250,248,0) 27%);
  pointer-events:none;
}

.hero-scroll{
  position:absolute; left:clamp(32px,7.2vw,132px); bottom:30px;
  display:flex; align-items:center; gap:12px;
  font-size:10.5px; letter-spacing:.34em; color:var(--muted);
  z-index:3;
}
.hero-scroll i{
  display:block; width:1px; height:34px; background:linear-gradient(180deg,var(--line),transparent);
  position:relative; overflow:hidden;
}
.hero-scroll i::after{
  content:""; position:absolute; inset:0; background:var(--red);
  transform:translateY(-100%); animation:scrollLine 2.6s var(--ease) infinite;
}
@keyframes scrollLine{
  0%{ transform:translateY(-100%); }
  55%{ transform:translateY(0); }
  100%{ transform:translateY(100%); }
}

/* ============================ SECTION SHELL ============================ */
.sec{ position:relative; padding:clamp(56px,6vw,96px) 0; }
.sec-tint{ background:var(--paper-2); }
.sec-tint::before{
  content:""; position:absolute; inset:0;
  background:url("../img/texture.png") no-repeat right -60px bottom -120px / 720px auto;
  mix-blend-mode:multiply; opacity:.85; pointer-events:none;
}
.sec > .wrap{ position:relative; z-index:1; }

.sec-head{
  display:flex; align-items:center; gap:14px;
  padding-top:20px; border-top:1px solid var(--line);
  margin-bottom:clamp(30px,4vw,52px);
}
.sec-no{
  font-family:var(--serif); font-size:12.5px; letter-spacing:.1em;
  color:var(--red); padding-right:14px; border-right:1px solid var(--line);
}
.sec-label{
  font-size:12.5px; letter-spacing:.24em; color:var(--ink-2);
}
.sec-rule{
  flex:1; height:1px; background:linear-gradient(90deg,var(--line),transparent);
  margin-left:8px;
}

.sec-title{
  font-size:clamp(27px,3.55vw,44px);
  line-height:1.42; letter-spacing:.055em; font-weight:700;
  margin-bottom:clamp(26px,3.4vw,44px);
}

.lead{
  font-family:var(--serif);
  font-size:clamp(16px,1.5vw,19.5px);
  line-height:2.15; letter-spacing:.075em; color:var(--ink-2);
  max-width:52em; margin-bottom:clamp(44px,5.6vw,76px);
}

/* ============================ HEX WHEEL ============================ */
.wheel{
  display:grid; grid-template-columns:1fr auto 1fr;
  align-items:center; gap:clamp(20px,3vw,54px);
  margin-bottom:clamp(52px,7vw,88px);
}
.wheel-col{ display:flex; flex-direction:column; gap:clamp(26px,3.4vw,46px); }
.wheel-col.left{ align-items:flex-end; }

.wheel-item{
  display:flex; align-items:center; gap:16px;
  min-height:54px;
  transition:transform .45s var(--ease);
}
.wheel-col.left .wheel-item{ text-align:right; flex-direction:row; }
.wheel-item:hover{ transform:translateX(-4px); }
.wheel-col.right .wheel-item:hover{ transform:translateX(4px); }

.wheel-txt{ display:flex; flex-direction:column; line-height:1.45; }
.wheel-txt b{
  font-family:var(--serif); font-size:clamp(15px,1.5vw,19px);
  letter-spacing:.09em; color:var(--ink); font-weight:700;
  transition:color .3s;
}
.wheel-txt i{
  font-style:normal; font-size:11.5px; letter-spacing:.14em; color:var(--muted);
  margin-top:5px;
}
.wheel-item:hover .wheel-txt b{ color:var(--red); }

.wheel-no{
  flex:0 0 auto; width:38px; height:38px; border-radius:50%;
  display:grid; place-items:center;
  font-family:var(--serif); font-size:12px; letter-spacing:.06em;
  color:#fff; border:1px solid transparent;
  transition:transform .45s var(--ease), background .35s;
}
.n-blue{ background:var(--blue); }
.n-red{ background:var(--red); }
.wheel-item:hover .wheel-no{ transform:scale(1.1); }

.wheel-graphic{ position:relative; width:clamp(330px,33vw,430px); aspect-ratio:1; }
.hex{ width:100%; height:100%; overflow:visible; }

.seg{
  fill:var(--paper-3);
  stroke:var(--paper);
  stroke-width:5;
  transition:fill .5s var(--ease);
  cursor:pointer;
}
.seg-g[data-tone="red"].is-hot .seg{ fill:var(--red); }
.seg-g[data-tone="blue"].is-hot .seg{ fill:var(--blue); }

.ico{
  fill:none; stroke:rgba(23,22,26,.4); stroke-width:1.25;
  stroke-linecap:round; stroke-linejoin:round;
  transition:stroke .4s var(--ease), opacity .4s;
  pointer-events:none;
}
.seg-g.is-hot .ico{ stroke:rgba(255,255,255,.92); }

.hex-core{
  fill:var(--paper);
  stroke:var(--line);
  stroke-width:1.2;
  filter:drop-shadow(0 2px 10px rgba(23,22,26,.05));
}
.wheel-core{
  position:absolute; inset:0; display:flex; flex-direction:column;
  align-items:center; justify-content:center; gap:2px;
  pointer-events:none; text-align:center;
}
.wheel-core svg{ height:34px; width:auto; margin-bottom:4px; }
.wheel-core b{
  font-family:var(--serif); font-size:14px; letter-spacing:.1em;
  color:var(--ink); font-weight:700;
}
.wheel-core i{
  font-style:normal; font-size:10.5px; letter-spacing:.12em; color:var(--muted);
}

/* facts */
.facts{
  display:grid; grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line);
  padding-top:clamp(28px,3.4vw,44px);
  gap:clamp(16px,3vw,48px);
}
.fact b{
  display:block; font-family:var(--serif); font-weight:400;
  font-size:clamp(38px,4.4vw,60px); line-height:1;
  color:var(--ink); letter-spacing:.02em;
}
.fact b span{ font-size:.48em; color:var(--red); margin-left:2px; }
.fact p{
  margin-top:14px; font-size:12.5px; letter-spacing:.09em; color:var(--muted);
  max-width:16em; line-height:1.8;
}

/* ============================ BUSINESS ============================ */
.biz-list{ border-top:1px solid var(--line); }

.biz{
  display:grid; grid-template-columns:minmax(190px,.52fr) 1fr 292px;
  gap:clamp(18px,3vw,48px);
  padding:clamp(30px,3.8vw,52px) 0;
  border-bottom:1px solid var(--line);
  transition:background .45s var(--ease);
  align-items:start;
}
.biz-fig{
  margin:0; overflow:hidden; background:var(--paper-3);
  align-self:start; position:relative;
  aspect-ratio:4/3;
}
.biz-fig img{
  position:absolute; inset:0;
  width:100%; height:100%; object-fit:cover;
  filter:saturate(.96);
  transition:transform .8s var(--ease);
}
.biz:hover .biz-fig img{ transform:scale(1.03); }

.biz-fig figcaption{
  position:absolute; left:0; right:0; bottom:0;
  padding:8px 12px; background:rgba(251,250,248,.92);
  font-size:10.5px; letter-spacing:.1em; color:var(--muted);
}
.biz:hover{ background:rgba(243,239,232,.5); }

.biz-head{ display:flex; gap:18px; align-items:flex-start; }
.biz-no{
  font-family:var(--serif); font-size:12px; letter-spacing:.14em;
  color:var(--red); padding-top:8px; flex:0 0 auto;
}
.biz-head h3{
  font-size:clamp(19px,2.1vw,26px); font-weight:700;
  letter-spacing:.06em; line-height:1.5;
}
.biz-sub{
  display:block; font-family:var(--sans); font-size:11.5px;
  letter-spacing:.16em; color:var(--muted); font-weight:400;
  margin-top:8px;
}

/* 无配图的两栏块 */
.biz--noimg{ grid-template-columns:minmax(190px,.52fr) 1fr; }

/* 全宽强调块（五维一体） */
.biz-wide{ grid-template-columns:1fr; gap:22px; }
.biz-wide .biz-fig{ display:none; }
.biz-wide .biz-head{ align-items:baseline; }
.biz-wide .biz-body{ max-width:none; }
.biz-wide .biz-lead{ max-width:none; }

.biz-body{ padding-top:2px; }
.biz-lead{
  font-family:var(--serif); font-size:clamp(14.5px,1.15vw,16.5px);
  line-height:2.1; letter-spacing:.05em; color:var(--ink-2);
  margin-bottom:20px; max-width:46em;
}

.tick{ list-style:none; margin:0; padding:0; display:grid; gap:9px; }
.tick li{
  position:relative; padding-left:18px; font-size:14px;
  line-height:1.9; color:var(--body);
}
.tick li::before{
  content:""; position:absolute; left:0; top:.86em;
  width:6px; height:1px; background:var(--red);
}
.tick.tight{ gap:6px; }
.tick.tight li{ font-size:13.5px; }

/* client wall */
.client-wall{
  margin-top:26px; padding-top:20px; border-top:1px dashed var(--line);
}
.client-title{
  font-size:11px; letter-spacing:.22em; color:var(--muted); margin-bottom:10px;
}
.client-names{
  font-family:var(--serif); font-size:13.5px; line-height:2.1;
  letter-spacing:.04em; color:var(--ink-2);
}

/* five-in-one */
.five{
  list-style:none; margin:28px 0 0; padding:0;
  display:grid; grid-template-columns:repeat(5,1fr);
  border-top:1px solid var(--line);
}
.five li{
  padding:20px 18px 4px 0; border-right:1px solid var(--line-soft);
}
.five li:last-child{ border-right:0; }
.five-no{
  font-family:var(--serif); font-size:11px; letter-spacing:.12em; color:var(--red);
  display:block; margin-bottom:8px;
}
.five b{
  display:block; font-family:var(--serif); font-size:14.5px;
  letter-spacing:.05em; color:var(--ink); font-weight:700; margin-bottom:10px;
}
.five ul{ list-style:none; margin:0; padding:0; display:grid; gap:4px; }
.five ul li{
  padding:0; border:0; font-size:12.5px; line-height:1.85; color:var(--muted);
}

/* ============================ TEAM ============================ */
.person{
  display:grid; grid-template-columns:300px 1fr;
  gap:clamp(24px,4vw,64px);
  padding:clamp(30px,3.6vw,48px) 0;
  border-top:1px solid var(--line);
}
.person:first-of-type{ border-top:0; }

.person-rev{ grid-template-columns:1fr 300px; }
.person-rev .person-photo{ order:2; }
.person-rev .person-main{ order:1; }

.person-narrow{ grid-template-columns:262px 1fr; }

.person-photo{ margin:0; position:relative; align-self:start; }
.person-photo img{
  width:100%; height:auto; object-fit:cover; object-position:center 18%;
  filter:saturate(.94);
  aspect-ratio:4/5;
}
.person-photo::after{
  content:""; position:absolute; inset:0;
  box-shadow:inset 0 0 0 1px rgba(23,22,26,.06);
  pointer-events:none;
}

.person-main h3{
  font-size:clamp(22px,2.4vw,30px); font-weight:700; letter-spacing:.08em;
  display:flex; align-items:baseline; gap:12px;
}
.person-tag{
  font-family:var(--sans); font-size:11px; letter-spacing:.2em;
  color:var(--red); border:1px solid rgba(176,69,58,.35);
  padding:2px 8px; border-radius:2px;
}
.person-tag--hl{
  color:#fff; background:var(--red); border-color:var(--red);
  letter-spacing:.12em;
}
.person-role{
  margin-top:12px; font-size:14px; letter-spacing:.06em; color:var(--ink-2);
}
.person-focus{
  margin-top:6px; font-family:var(--serif); font-size:15.5px;
  letter-spacing:.08em; color:var(--blue); font-weight:700;
}

.career{
  list-style:none; margin:24px 0 0; padding:0;
  display:grid; gap:7px;
}
.career li{
  display:grid; grid-template-columns:104px 1fr; gap:12px;
  font-size:13.5px; line-height:1.85; color:var(--body);
  align-items:baseline;
}
.career li > span{
  font-family:var(--serif); font-size:12.5px; letter-spacing:.04em;
  color:var(--muted);
}
.career li > p{ margin:0; }
.career li b{ color:var(--ink); font-weight:700; margin-right:8px; }

.person-line{
  margin-top:20px; font-size:13.5px; line-height:2; color:var(--body);
  max-width:56em;
}

.nums{
  display:grid; grid-template-columns:repeat(4,1fr);
  gap:1px; background:var(--line); margin-top:26px;
  border:1px solid var(--line);
}
.nums .num{
  background:var(--paper); padding:16px 14px;
}
.nums .num b{
  font-family:var(--serif); font-size:clamp(24px,2.6vw,32px); font-weight:400;
  color:var(--red); line-height:1; display:block;
}
.nums .num span{
  display:block; margin-top:8px; font-size:11.5px; line-height:1.7;
  color:var(--muted); letter-spacing:.04em;
}

.honor{
  list-style:none; margin:22px 0 0; padding:0; display:grid; gap:6px;
}
.honor li{
  position:relative; padding-left:16px; font-size:13px; line-height:1.9; color:var(--body);
}
.honor li::before{
  content:""; position:absolute; left:0; top:.9em; width:5px; height:5px;
  border:1px solid var(--red); border-radius:50%;
}

.roles{
  list-style:none; margin:22px 0 0; padding:0;
  columns:2; column-gap:32px;
}
.roles li{
  break-inside:avoid; font-size:13px; line-height:1.95; color:var(--body);
  padding-left:15px; position:relative; margin-bottom:4px;
}
.roles li::before{
  content:""; position:absolute; left:0; top:.88em; width:5px; height:1px; background:var(--blue);
}

.person-highlight{
  margin-top:22px; padding:16px 20px;
  background:rgba(176,69,58,.045);
  border-left:2px solid var(--red);
  font-family:var(--serif); font-size:14.5px; line-height:1.95;
  letter-spacing:.05em; color:var(--ink-2);
}

.team-grid{
  display:grid; grid-template-columns:repeat(3,1fr);
  gap:1px; background:var(--line);
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  margin-top:clamp(30px,4vw,52px);
}
.team-card{ background:var(--paper); padding:28px 24px 30px; }
.team-avatar{
  width:88px; height:88px; border-radius:50%; overflow:hidden;
  background:var(--paper-3); margin-bottom:18px;
}
.team-avatar img{ width:100%; height:100%; object-fit:cover; object-position:center 20%; }
.team-avatar svg{ width:100%; height:100%; display:block; }

.team-card h4{
  font-size:16.5px; font-weight:700; letter-spacing:.06em;
  display:flex; align-items:baseline; gap:8px; flex-wrap:wrap;
}
.team-ko{
  font-family:var(--sans); font-size:11px; letter-spacing:.14em; color:var(--muted);
}
.team-role{
  margin-top:8px; font-size:12.5px; letter-spacing:.05em; color:var(--red);
}
.team-desc{
  margin-top:10px; font-size:12.5px; line-height:1.9; color:var(--muted);
}

/* ============================ PLATFORM ============================ */
.tl{
  position:relative;
  margin:clamp(30px,4vw,50px) 0 clamp(46px,5.6vw,76px);
}
/* 贯穿中轴：用伪元素画线，不依赖 grid 的负行号（隐式行时 -1 会塌成 0 高） */
.tl::before{
  content:""; position:absolute; z-index:0;
  left:calc(50% - .5px); top:2px; bottom:8px;
  width:1px;
  background:linear-gradient(180deg,rgba(176,69,58,.62) 0%,rgba(176,69,58,.38) 78%,rgba(176,69,58,.12) 100%);
  pointer-events:none;
}
.tl-grid{
  position:relative; z-index:1;
  display:grid; grid-template-columns:1fr 1px 1fr;
  align-items:start;
}
.tl-axis{ display:none; }
.tl-item{
  position:relative;
  display:flex; gap:20px; align-items:baseline;
  padding-bottom:clamp(26px,3vw,40px);
}
.tl-item.side-r{ grid-column:3; padding-left:clamp(34px,3.4vw,54px); }
.tl-item.side-l{
  grid-column:1; padding-right:clamp(34px,3.4vw,54px);
  flex-direction:row-reverse; text-align:right;
}
.tl-item::after{
  content:""; position:absolute; top:.5em;
  width:7px; height:7px; border-radius:50%;
  background:var(--paper); border:1px solid var(--red);
}
.tl-item.side-r::after{ left:-3px; }
.tl-item.side-l::after{ right:-3px; }

.tl-year{
  font-family:var(--serif); font-size:clamp(16px,1.5vw,20px);
  color:var(--red); letter-spacing:.06em; flex:0 0 auto; line-height:1.4;
}
.tl-item p{
  font-size:13.5px; line-height:1.95; color:var(--ink-2);
  max-width:24em; margin:0;
}
.tl-item sup{ font-size:.72em; }

.block{
  padding:clamp(30px,3.8vw,52px) 0;
  border-top:1px solid var(--line);
}
.block-title{
  font-size:clamp(18px,1.9vw,22px); font-weight:700; letter-spacing:.09em;
  margin-bottom:clamp(20px,2.4vw,32px);
}

.dirs{
  list-style:none; margin:0; padding:0;
  display:grid; grid-template-columns:repeat(3,1fr); gap:1px;
  background:var(--line); border:1px solid var(--line);
}
.dirs li{
  background:var(--paper); padding:20px 22px;
  font-size:13.5px; line-height:1.85; color:var(--ink-2);
  display:flex; gap:14px; align-items:baseline;
}
.dirs li span{
  font-family:var(--serif); font-size:11px; color:var(--red); letter-spacing:.1em;
  flex:0 0 auto;
}

.matrix{
  display:grid; grid-template-columns:1fr 1fr; gap:1px;
  background:var(--line); border:1px solid var(--line);
}
.matrix-col{ background:var(--paper); padding:24px 26px 28px; }
.matrix-label{
  font-size:11px; letter-spacing:.26em; color:var(--red);
  padding-bottom:12px; margin-bottom:14px; border-bottom:1px dashed var(--line);
}
.matrix-col ul{ list-style:none; margin:0; padding:0; display:grid; gap:10px; }
.matrix-col li{
  font-size:13px; line-height:1.8; color:var(--muted);
  display:flex; gap:14px; align-items:baseline;
}
.matrix-col li b{
  font-family:var(--serif); font-size:13.5px; color:var(--ink);
  font-weight:700; letter-spacing:.03em; flex:0 0 auto; min-width:8.5em;
}

.callout{
  display:flex; gap:18px; align-items:baseline; flex-wrap:wrap;
  margin-top:22px; padding:18px 22px;
  background:rgba(62,110,156,.055); border-left:2px solid var(--blue);
}
.callout-tag{
  font-size:11px; letter-spacing:.16em; color:var(--blue); flex:0 0 auto;
}
.callout p{ font-size:13.5px; line-height:1.9; color:var(--ink-2); }

.plat-tags{
  display:grid; grid-template-columns:repeat(3,1fr);
  gap:clamp(18px,3vw,44px);
  margin-bottom:clamp(24px,3vw,36px);
}
.plat-cell .plat-sub:first-child{ margin-top:0; }

.plat-gallery{
  display:grid; grid-template-columns:repeat(3,1fr);
  gap:12px;
  /* 原图仅 260~275px 宽，限制容器宽度避免过度放大 */
  max-width:900px; margin-left:auto; margin-right:auto;
}
.plat-item{
  margin:0; position:relative; overflow:hidden;
  background:var(--paper-3); aspect-ratio:3/2;
}
.plat-item img{
  position:absolute; inset:0;
  width:100%; height:100%; object-fit:cover; display:block;
}
/* 走廊为竖构图，跨两行占满第三列 */
.plat-tall{ grid-column:3; grid-row:1 / span 2; aspect-ratio:auto; }
.plat-sub{
  font-size:11px; letter-spacing:.24em; color:var(--muted);
  margin-bottom:12px; margin-top:22px;
}
.plat-sub:first-child{ margin-top:0; }
.tagrow{ display:flex; flex-wrap:wrap; gap:8px; }
.tagrow span{
  border:1px solid var(--line); padding:7px 14px;
  font-size:12.5px; letter-spacing:.05em; color:var(--ink-2);
  background:var(--paper);
}
.tagrow .tag-strong{ border-color:rgba(176,69,58,.3); color:var(--red-deep); }
.plat-note{
  font-size:13.5px; line-height:1.9; color:var(--body);
}


/* stats + cases */
.stat-row{
  display:grid; grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  margin-bottom:clamp(24px,3vw,38px);
}
.stat{ padding:26px 22px 28px; border-right:1px solid var(--line-soft); }
.stat:last-child{ border-right:0; }
.stat b{
  font-family:var(--serif); font-size:clamp(32px,4vw,54px); font-weight:400;
  color:var(--ink); line-height:1; display:block;
}
.stat b span{ font-size:.46em; color:var(--red); }
.stat p{
  margin-top:12px; font-size:12px; line-height:1.8; color:var(--muted);
  letter-spacing:.05em;
}

.cases{ display:grid; grid-template-columns:1.35fr 1fr 1.15fr; gap:1px; background:var(--line); border:1px solid var(--line); }
.cases-2{ grid-template-columns:1fr 1fr; margin-top:1px; border-top:0; }
.case{ background:var(--paper); padding:24px 24px 26px; }
.case-tag{
  font-size:11px; letter-spacing:.17em; color:var(--red);
  padding-bottom:12px; margin-bottom:14px; border-bottom:1px solid var(--line-soft);
}
.case-txt{ font-size:13px; line-height:1.95; color:var(--body); margin-bottom:8px; }
.case-txt b{ color:var(--ink); margin-right:8px; font-weight:700; }

.disclaimer{
  margin-top:20px; font-size:11.5px; line-height:1.9; color:var(--muted);
  letter-spacing:.03em;
}

/* ============================ RESULTS ============================ */
.result-grid{
  display:grid; grid-template-columns:repeat(3,1fr);
  gap:1px; background:var(--line);
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  margin-bottom:clamp(34px,4vw,54px);
}
.result-stat{ background:var(--paper); padding:clamp(26px,3vw,40px) 26px; }
.result-stat b{
  font-family:var(--serif); font-size:clamp(44px,6vw,76px); font-weight:400;
  color:var(--ink); line-height:1; display:block; letter-spacing:.01em;
}
.result-stat b span{ font-size:.36em; color:var(--red); margin-left:4px; }
.result-stat p{
  margin-top:16px; font-size:13px; letter-spacing:.09em; color:var(--ink-2);
}
.result-stat i{
  display:block; margin-top:10px; font-style:normal;
  font-size:12px; line-height:1.85; color:var(--muted); max-width:24em;
}

.result-blocks{ display:grid; grid-template-columns:1.15fr 1fr; gap:clamp(20px,3.4vw,48px); }
.rb h3{
  font-size:15px; font-weight:700; letter-spacing:.16em;
  padding-bottom:14px; margin-bottom:16px; border-bottom:1px solid var(--line);
}
.rb p{
  font-family:var(--serif); font-size:14.5px; line-height:2.05;
  letter-spacing:.05em; color:var(--ink-2); margin-bottom:12px;
}

/* ============================ NETWORK ============================ */
.policy{
  border:1px solid var(--line); background:var(--paper);
  padding:clamp(22px,3vw,34px); margin-bottom:clamp(34px,4.4vw,56px);
  display:grid; gap:8px;
}
.policy-kicker{ font-size:11px; letter-spacing:.26em; color:var(--red); }
.policy-title{
  font-family:var(--serif); font-size:clamp(16px,1.7vw,21px);
  letter-spacing:.05em; color:var(--ink); font-weight:700; margin-top:4px;
}
.policy-meta{ font-size:12.5px; letter-spacing:.05em; color:var(--muted); }

.gallery{
  display:grid; grid-template-columns:repeat(4,1fr);
  gap:14px; margin-bottom:clamp(38px,5vw,64px);
}
.gal{ margin:0; position:relative; background:var(--paper-3); grid-column:span 2; }
.gal img{ width:100%; height:100%; object-fit:cover; aspect-ratio:16/10; filter:saturate(.96); }
.gal-big{ grid-column:1 / 3; grid-row:1 / 3; }
.gal-big img{ aspect-ratio:auto; height:100%; }
.gal figcaption{
  position:absolute; inset:auto 0 0 0;
  padding:26px 18px 14px;
  background:linear-gradient(0deg,rgba(14,13,12,.72),rgba(14,13,12,0));
  color:#fff; font-size:11px; line-height:1.65; letter-spacing:.04em;
  opacity:0; transform:translateY(6px);
  transition:opacity .4s var(--ease), transform .4s var(--ease);
}
.gal figcaption b{ display:block; font-size:12px; font-weight:600; margin-bottom:3px; }
.gal:hover figcaption{ opacity:1; transform:translateY(0); }
.gal:hover img{ filter:saturate(1); }

.partners{
  border-top:1px solid var(--line); padding-top:clamp(26px,3.4vw,40px);
}
.partners-title{ font-size:11px; letter-spacing:.26em; color:var(--muted); margin-bottom:24px; }

.partner-wall{
  display:grid; grid-template-columns:repeat(3,1fr);
  gap:1px; background:var(--line);
  border:1px solid var(--line);
}
.pw{
  margin:0; background:var(--paper);
  min-height:164px; padding:26px 22px 20px;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:16px;
  text-align:center;
}
.pw-mark{
  height:58px; width:100%;
  display:flex; align-items:center; justify-content:center;
  flex:0 0 auto;
}
.pw-mark img{
  max-height:46px; max-width:86%; width:auto; object-fit:contain;
  filter:grayscale(1); opacity:.7;
  transition:filter .4s var(--ease), opacity .4s var(--ease);
}
.pw:hover .pw-mark img{ filter:grayscale(0); opacity:1; }
.pw-word{
  font-family:var(--serif); font-size:17px; font-weight:700;
  letter-spacing:.05em; color:var(--ink-2); line-height:1.55;
  display:block;
}
.pw-word span{
  display:block; font-family:var(--sans); font-weight:400;
  font-size:10.5px; letter-spacing:.14em; color:var(--muted); margin-top:6px;
}
.pw figcaption{
  font-size:10.5px; letter-spacing:.14em; color:var(--muted);
}

/* ============================ CONTACT ============================ */
.contact{
  position:relative; background:#131214; color:#EDEAE5;
  padding:clamp(80px,10vw,140px) 0 clamp(70px,8vw,110px);
  overflow:hidden;
}
.contact .wrap{ position:relative; z-index:2; }
.contact::before{
  content:""; position:absolute; left:0; top:0; bottom:0; width:3px; background:var(--red);
}
.contact-inner{ max-width:760px; }

.contact-kicker{
  font-size:11px; letter-spacing:.34em; color:var(--red-soft); margin-bottom:clamp(28px,4vw,48px);
}
.contact-title{
  color:#fff; font-size:clamp(34px,5.4vw,68px); font-weight:700;
  letter-spacing:.08em; line-height:1.24;
}
.contact-sub{
  margin-top:18px; font-family:var(--serif);
  font-size:clamp(14px,1.5vw,18px); letter-spacing:.22em; color:rgba(237,234,229,.72);
}
.contact-meta{
  margin-top:clamp(46px,6.4vw,88px); padding-top:26px;
  border-top:1px solid rgba(237,234,229,.16);
  display:flex; flex-direction:column; gap:16px;
}

.contact-list{
  list-style:none; margin:0; padding:0;
  display:flex; flex-wrap:wrap; align-items:baseline;
  gap:12px clamp(22px,3.4vw,52px);
}
.contact-list li{ display:flex; align-items:baseline; gap:10px; }
.contact-list span{
  font-size:11px; letter-spacing:.1em; color:rgba(237,234,229,.55);
  flex:0 0 auto;
}
.contact-list b, .contact-list a{
  font-family:var(--serif); font-size:clamp(15px,1.5vw,17px);
  font-weight:400; letter-spacing:.04em; color:#EDEAE5;
  text-decoration:none; white-space:nowrap;
  transition:color .3s var(--ease);
}
.contact-list a:hover{ color:var(--red-soft); }

.contact-company{
  font-size:12px; letter-spacing:.1em; color:rgba(237,234,229,.42);
}

.contact-mark{
  position:absolute; right:clamp(-40px,2vw,90px); bottom:-40px;
  height:min(60vh,430px); width:auto; opacity:.13; z-index:1;
  filter:grayscale(1) brightness(3);
}

/* ============================ FOOTER ============================ */
.footer{ background:#0C0B0D; color:rgba(237,234,229,.55); padding:34px 0; }
.footer-inner{
  display:flex; align-items:center; gap:26px; flex-wrap:wrap;
}
.footer-brand{ display:flex; align-items:center; gap:10px; }
.footer-brand svg{ height:26px; width:auto; filter:grayscale(1) brightness(2.6); opacity:.8; }
.footer-brand b{
  display:block; font-family:var(--serif); font-size:13px;
  letter-spacing:.2em; color:#EDEAE5; font-weight:400;
}
.footer-brand em{
  display:block; font-style:normal; font-size:7.5px;
  letter-spacing:.18em; color:rgba(237,234,229,.35); margin-top:2px;
}
.footer-nav{
  display:flex; gap:22px; margin-left:auto; flex-wrap:wrap;
}
.footer-nav a{ font-size:12px; letter-spacing:.08em; transition:color .3s; }
.footer-nav a:hover{ color:#EDEAE5; }
.footer-copy{ font-size:11.5px; letter-spacing:.03em; width:100%; padding-top:18px; border-top:1px solid rgba(237,234,229,.09); }

/* ============================ TO TOP ============================ */
.to-top{
  position:fixed; right:24px; bottom:24px; z-index:90;
  width:44px; height:44px; border-radius:50%;
  border:1px solid var(--line); background:rgba(251,250,248,.9);
  backdrop-filter:blur(8px);
  color:var(--ink); cursor:pointer; display:grid; place-items:center;
  opacity:0; pointer-events:none; transform:translateY(8px);
  transition:opacity .4s var(--ease), transform .4s var(--ease), background .3s;
}
.to-top svg{ width:17px; height:17px; }
.to-top.is-on{ opacity:1; pointer-events:auto; transform:translateY(0); }
.to-top:hover{ background:var(--ink); color:var(--paper); border-color:var(--ink); }

/* ============================ REVEAL ============================ */
.reveal{
  opacity:0; transform:translateY(22px);
  transition:opacity .9s var(--ease), transform .9s var(--ease);
}
.reveal[data-delay="1"]{ transition-delay:.09s; }
.reveal[data-delay="2"]{ transition-delay:.18s; }
.reveal[data-delay="3"]{ transition-delay:.27s; }
.reveal[data-delay="4"]{ transition-delay:.36s; }
.reveal.is-in{ opacity:1; transform:none; }

/* ============================ RESPONSIVE ============================ */
@media (max-width:1120px){
  :root{ --gut:32px; }
  .nav-links{ gap:22px; }
  .biz{ grid-template-columns:minmax(180px,.5fr) 1fr 240px; }
  .five{ grid-template-columns:repeat(3,1fr); }
  .five li{ border-bottom:1px solid var(--line-soft); padding-bottom:16px; }
  .dirs{ grid-template-columns:repeat(2,1fr); }
  .team-grid{ grid-template-columns:repeat(2,1fr); }
  .cases{ grid-template-columns:1fr 1fr; }
  .cases .case:first-child{ grid-column:span 2; }
}

@media (max-width:900px){
  :root{ --nav-h:66px; --gut:24px; }

  .nav-cta{ display:none; }
  .nav-toggle{ display:block; }
  .nav-links{
    position:fixed; inset:var(--nav-h) 0 auto 0;
    margin:0; padding:10px 24px 26px;
    background:rgba(251,250,248,.98);
    backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line);
    flex-direction:column; align-items:stretch; gap:0;
    transform:translateY(-110%); transition:transform .5s var(--ease);
    box-shadow:0 20px 40px -30px rgba(0,0,0,.4);
  }
  .nav-links.is-open{ transform:translateY(0); }
  .nav-links a{
    padding:15px 0; border-bottom:1px solid var(--line-soft); font-size:14.5px;
  }
  .nav-links a::after{ display:none; }

  .hero{
    grid-template-columns:1fr; min-height:auto; padding-top:var(--nav-h);
  }
  .hero-copy{ padding:clamp(38px,9vw,60px) var(--gut) 0; }
  .hero-visual{ order:-1; height:40vh; min-height:250px; }
  .hero-visual::after{
    background:linear-gradient(180deg,rgba(251,250,248,0) 55%,var(--paper) 100%);
  }
  .hero::before{ inset:0; background-position:center -60px; opacity:.4; }
  .hero-scroll{ display:none; }
  .hero-meta{ margin-top:40px; margin-bottom:48px; }

  .wheel{ grid-template-columns:1fr; gap:28px; }
  .wheel-graphic{ width:min(74vw,360px); margin:0 auto; order:-1; }
  .wheel-col{ gap:2px; align-items:stretch !important; }
  .wheel-col.left .wheel-item{ text-align:left; flex-direction:row-reverse; justify-content:flex-end; }
  .wheel-item{ padding:14px 0; border-bottom:1px solid var(--line-soft); }
  .wheel-no{ width:32px; height:32px; font-size:11px; }

  .facts{ grid-template-columns:1fr; gap:26px; }
  .fact p{ max-width:none; }

  .biz{ grid-template-columns:1fr; gap:14px; }
  .biz-head h3{ font-size:20px; }
  .biz-fig{ grid-row:1; width:100%; aspect-ratio:16/9; }
  .biz-wide .biz-fig{ display:none; }

  .person, .person-rev{ grid-template-columns:1fr; gap:24px; }
  .person-rev .person-photo{ order:0; max-width:260px; }
  .person-rev .person-main{ order:1; }
  .person-photo{ max-width:260px; }
  .person-lead .person-photo{ max-width:300px; }
  .nums{ grid-template-columns:repeat(2,1fr); }
  .roles{ columns:1; }

  .tl-grid{ grid-template-columns:1fr; padding-left:28px; }
  .tl::before{ left:0; top:6px; bottom:16px; }
  .tl-item.side-r, .tl-item.side-l{
    grid-column:1; padding:0 0 26px 0;
    flex-direction:column; text-align:left; gap:4px;
  }
  .tl-item.side-l{ flex-direction:column; }
  .tl-item.side-r::after, .tl-item.side-l::after{ left:-32px; right:auto; top:.65em; }
  .tl-item p{ max-width:none; }

  .dirs{ grid-template-columns:1fr; }
  .matrix{ grid-template-columns:1fr; }
  .plat-tags{ grid-template-columns:1fr; gap:22px; }
  .plat-gallery{ grid-template-columns:1fr 1fr; gap:10px; max-width:none; }
  .plat-tall{ grid-column:auto; grid-row:auto; aspect-ratio:3/2; }

  .stat-row{ grid-template-columns:repeat(2,1fr); }
  .stat{ border-bottom:1px solid var(--line-soft); }
  .stat:nth-child(2n){ border-right:0; }

  .cases, .cases-2{ grid-template-columns:1fr; }
  .cases .case:first-child{ grid-column:auto; }

  .result-grid{ grid-template-columns:1fr; }
  .result-blocks{ grid-template-columns:1fr; gap:28px; }

  .gallery{ grid-template-columns:1fr 1fr; }
  .gal-big{ grid-column:1 / -1; grid-row:auto; }
  .gal-big img{ aspect-ratio:4/3; }
  .gal figcaption{ opacity:1; transform:none; }
  .partner-wall{ grid-template-columns:1fr 1fr; }
  .pw{ min-height:142px; padding:20px 14px 18px; }

  .contact-meta{ gap:14px; }
  .contact-list{ flex-direction:column; gap:9px; }
  .contact-list li{ gap:8px; }
  .contact-mark{ height:220px; right:-50px; bottom:-30px; opacity:.1; }
  .footer-nav{ margin-left:0; width:100%; }
}

@media (max-width:560px){
  body{ font-size:15px; }
  .hero-name{ font-size:clamp(42px,13vw,60px); letter-spacing:.08em; }
  .hero-company{ font-size:15px; letter-spacing:.14em; }
  .sec-title{ font-size:25px; }
  .five{ grid-template-columns:1fr; }
  .five li{ border-right:0; }
  .team-grid{ grid-template-columns:1fr; }
  .nums{ grid-template-columns:1fr 1fr; }
  .gallery{ grid-template-columns:1fr; }
  .gal-big{ grid-column:auto; }
  .partner-wall{ grid-template-columns:1fr; }
  .stat-row{ grid-template-columns:1fr 1fr; }
  .pw-word{ font-size:16px; }
}

@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  .reveal{ opacity:1; transform:none; transition:none; }
  .hero-scroll i::after{ animation:none; }
  *{ animation-duration:.001ms !important; transition-duration:.001ms !important; }
}