/* ============================================================
   恒信法律智库 · Hengxin Legal Intelligence — redesign v2
   方向：檀褐古金 · 厚重高端律所门面（区别 Aquifer 暖纸 / 服务号藏蓝）
   深檀褐主调 · 墨绿=德恒联动强调 · 古金点缀 · 明暗区块交替
   字体：Cormorant Garamond × 站酷小薇 / Marcellus / DM Sans
   ============================================================ */

:root{
  --bark:#241A12;        /* 深檀木褐 主深底 */
  --bark-2:#2E2318;
  --bark-3:#3A2C1D;
  --cream:#EFE6D1;       /* 暖象牙 浅区底（偏金、区别Aquifer暖白纸）*/
  --cream-2:#E6DABE;
  --ink:#241B10;         /* 浅底主文字 暖褐黑 */
  --ink-soft:#6E6048;    /* 浅底次级 暖灰褐 */
  --on-dark:#EFE5CF;     /* 深底主文字 暖白 */
  --on-dark-soft:rgba(239,229,207,.62);
  --jade:#2B5645;        /* 墨绿（德恒联动·强调）*/
  --jade-deep:#1F4133;
  --jade-bright:#3C7259;
  --gold:#B0863F;        /* 古金 */
  --gold-2:#C9A15B;      /* 亮古金 */
  --line-d:rgba(239,229,207,.16);
  --line-l:rgba(36,27,16,.15);
  --line-g:rgba(176,134,63,.55);
  --serif:"Cormorant Garamond","ZCOOL XiaoWei",Georgia,serif;
  --roman:"Marcellus","Cormorant Garamond",serif;
  --sans:"DM Sans","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --shell:1200px;
  --ease:cubic-bezier(.2,.7,.2,1);
}

*{box-sizing:border-box;min-width:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bark);color:var(--ink);font-family:var(--sans);
  font-weight:400;line-height:1.74;letter-spacing:.01em;-webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;overflow-x:hidden}

.grain{position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.55;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E")}

body[data-lang="zh"] [data-lang="en"]{display:none}
body[data-lang="en"] [data-lang="zh"]{display:none}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
[hidden]{display:none!important}
::selection{background:rgba(176,134,63,.28)}
.shell{width:min(var(--shell),calc(100% - 52px));margin:0 auto}

[data-reveal]{opacity:0;transform:translateY(24px);
  transition:opacity 1s var(--ease) var(--d,0s),transform 1s var(--ease) var(--d,0s)}
[data-reveal].is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){[data-reveal]{opacity:1;transform:none;transition:none}}

/* ---------- top bar ---------- */
.topbar{position:sticky;top:0;z-index:20;background:rgba(36,26,18,.72);
  backdrop-filter:blur(16px) saturate(1.1);border-bottom:1px solid var(--line-d)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;min-height:80px;gap:24px}
.brand{display:flex;align-items:baseline;gap:14px;color:var(--on-dark)}
.brand-wm{font-family:var(--roman);font-size:23px;letter-spacing:.34em;color:var(--gold-2)}
.brand-zh{font-family:var(--serif);font-size:16px;letter-spacing:.04em;color:var(--on-dark);
  border-left:1px solid var(--line-d);padding-left:14px}
.nav{display:flex;align-items:center;gap:32px}
.nav>a{position:relative;font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--on-dark-soft);padding:4px 0;transition:color .3s var(--ease)}
.nav>a::after{content:"";position:absolute;left:0;right:100%;bottom:-4px;height:1px;
  background:var(--gold-2);transition:right .4s var(--ease)}
.nav>a:hover{color:var(--on-dark)}
.nav>a:hover::after{right:0}
.lang-toggle{margin-left:4px;border:1px solid var(--line-g);background:transparent;color:var(--gold-2);
  font-family:var(--sans);font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  padding:9px 17px;border-radius:999px;cursor:pointer;transition:.3s var(--ease)}
.lang-toggle:hover{background:var(--gold);border-color:var(--gold);color:var(--bark)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:148px 0 0;background:var(--bark);color:var(--on-dark)}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(80% 60% at 78% 8%,rgba(60,114,89,.16),transparent 62%),
    radial-gradient(70% 60% at 10% 100%,rgba(176,134,63,.12),transparent 60%)}
.hero::after{content:"";position:absolute;left:0;top:0;bottom:0;width:1px;
  background:linear-gradient(180deg,transparent,var(--line-g),transparent);left:max(26px,calc((100% - var(--shell))/2))}
.hero-inner{position:relative;padding-bottom:64px}
.kicker{display:flex;align-items:center;gap:16px;margin:0 0 30px;
  font-family:var(--roman);font-size:13px;letter-spacing:.28em;text-transform:uppercase;color:var(--gold-2)}
.k-rule{width:52px;height:1px;background:var(--gold);display:inline-block}
.hero-title{margin:0;font-family:var(--serif);font-weight:500;
  font-size:clamp(46px,7.4vw,104px);line-height:1.04;letter-spacing:.005em;color:var(--on-dark)}
.hero-title .line{display:block;overflow:hidden}
.hero-title em{font-style:italic;color:var(--gold-2)}
.hero-lead{max-width:660px;margin:34px 0 0;font-size:18px;line-height:1.82;color:var(--on-dark-soft)}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:42px}
.btn-gold,.btn-ghost{font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  padding:16px 30px;transition:.32s var(--ease)}
.btn-gold{background:var(--gold);color:var(--bark);font-weight:600}
.btn-gold:hover{background:var(--gold-2);transform:translateY(-2px)}
.btn-ghost{border:1px solid var(--line-g);color:var(--on-dark)}
.btn-ghost:hover{border-color:var(--gold-2);color:var(--gold-2)}
.hero-foot{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  border-top:1px solid var(--line-d);padding:30px 0 44px}
.hero-foot span{display:flex;flex-direction:column;gap:5px}
.hero-foot b{font-family:var(--serif);font-weight:500;font-size:34px;line-height:1;color:var(--gold-2)}
.hero-foot b small{font-size:15px;color:var(--on-dark-soft);margin-left:2px}
.hero-foot i{font-style:normal;font-size:12px;letter-spacing:.04em;color:var(--on-dark-soft)}

/* ---------- section frame ---------- */
.section{padding:118px 0;position:relative;z-index:1}
.insights,.team{background:var(--cream);color:var(--ink)}
.method{background:var(--bark);color:var(--on-dark)}
.sec-head{max-width:700px;margin:0 0 60px}
.sec-kicker{margin:0 0 20px;font-family:var(--roman);font-size:13px;letter-spacing:.26em;
  text-transform:uppercase;color:var(--gold)}
.sec-kicker.gold{color:var(--gold-2)}
.sec-title{margin:0;font-family:var(--serif);font-weight:500;
  font-size:clamp(34px,5vw,60px);line-height:1.08;letter-spacing:.005em;color:inherit}
.sec-note{margin:20px 0 0;font-size:17px;line-height:1.8;color:var(--ink-soft);max-width:620px}
.sec-head.light .sec-note{color:var(--on-dark-soft)}

/* filters + search */
.filters{display:flex;gap:28px;margin-top:34px;border-bottom:1px solid var(--line-l)}
.filter{position:relative;border:0;background:transparent;cursor:pointer;font-family:var(--sans);
  font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft);padding:0 0 14px}
.filter::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--gold);
  transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease)}
.filter:hover{color:var(--ink)}
.filter.is-active{color:var(--ink)}
.filter.is-active::after{transform:scaleX(1)}
.mini-search{margin-top:22px;max-width:520px}
.search-box{width:100%;border:0;border-bottom:1px solid var(--line-l);background:transparent;
  padding:12px 2px;font-family:var(--sans);font-size:15px;color:var(--ink)}
.search-box::placeholder{color:#a99c80}
.search-box:focus{outline:none;border-bottom-color:var(--gold)}

/* ---------- insights (editorial index) ---------- */
.library{list-style:none;margin:0;padding:0;border-top:1px solid var(--ink)}
.entry{border-bottom:1px solid var(--line-l)}
.entry.is-hidden{display:none}
.entry-link{display:grid;grid-template-columns:78px minmax(0,1fr) 44px;align-items:start;gap:18px;
  padding:36px 8px 34px;transition:background .45s var(--ease),padding .45s var(--ease)}
.entry-link:hover{background:linear-gradient(90deg,rgba(176,134,63,.09),transparent 72%);padding-left:22px}
.entry-no{font-family:var(--serif);font-size:30px;font-weight:500;color:var(--gold);line-height:1;
  transition:color .4s var(--ease)}
.entry-body{display:grid;gap:12px}
.entry-tags{display:flex;flex-wrap:wrap;gap:8px}
.entry-tags i{font-style:normal;font-family:var(--roman);font-size:10.5px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--jade);border:1px solid var(--line-l);padding:4px 10px}
.entry-title{font-family:var(--serif);font-weight:500;font-size:clamp(22px,2.6vw,31px);line-height:1.3;
  color:var(--ink);max-width:40ch;background-image:linear-gradient(var(--gold),var(--gold));
  background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;transition:background-size .5s var(--ease)}
.entry-link:hover .entry-title{background-size:100% 1px}
.entry-desc{font-size:14.5px;color:var(--ink-soft);max-width:60ch}
.entry-arrow{justify-self:end;align-self:center;font-family:var(--serif);font-size:24px;color:var(--gold);
  transition:transform .4s var(--ease)}
.entry-link:hover .entry-arrow{transform:translateX(8px)}
.library-empty{margin:32px 2px;color:var(--ink-soft);font-size:15px}

/* ---------- approach (dark) ---------- */
.method-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line-d)}
.method-card{padding:44px 34px 50px;border-bottom:1px solid var(--line-d)}
.method-card:not(:last-child){border-right:1px solid var(--line-d)}
.method-no{font-family:var(--roman);font-size:24px;letter-spacing:.1em;color:var(--gold-2)}
.method-card h3{margin:22px 0 14px;font-family:var(--serif);font-weight:500;font-size:27px;color:var(--on-dark)}
.method-card p{margin:0;font-size:15px;color:var(--on-dark-soft);line-height:1.78}

/* ---------- counsel ---------- */
.team-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.team-card{margin:0;border:1px solid var(--line-l);background:#fff;overflow:hidden;
  transition:box-shadow .5s var(--ease),transform .5s var(--ease)}
.team-card:hover{box-shadow:0 36px 70px -42px rgba(36,27,16,.55);transform:translateY(-4px)}
.team-card img{width:100%;aspect-ratio:16/10;object-fit:cover;filter:saturate(.97) contrast(1.02)}
.team-card figcaption{display:grid;gap:6px;padding:24px 26px 26px;border-top:1px solid var(--line-l)}
.team-line{font-family:var(--serif);font-size:20px;font-weight:500;color:var(--ink)}
.team-meta{font-family:var(--roman);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--gold)}

/* ---------- contact (jade rhythm = 德恒联动强调) ---------- */
.contact{position:relative;overflow:hidden;padding:128px 0;color:var(--on-dark);
  background:radial-gradient(130% 130% at 78% 0%,var(--jade),var(--jade-deep) 72%)}
.contact::before{content:"";position:absolute;inset:0;opacity:.4;pointer-events:none;
  background:linear-gradient(90deg,rgba(239,229,207,.05) 1px,transparent 1px),
            linear-gradient(180deg,rgba(239,229,207,.05) 1px,transparent 1px);
  background-size:70px 70px;mask-image:radial-gradient(80% 80% at 50% 30%,#000,transparent 76%)}
.contact-inner{position:relative;text-align:center}
.contact-title{margin:16px auto 48px;font-family:var(--serif);font-weight:500;
  font-size:clamp(30px,4.4vw,52px);line-height:1.24;color:#fff;max-width:20ch}
.contact-rows{display:grid;max-width:580px;margin:0 auto;border-top:1px solid rgba(239,229,207,.2)}
.contact-row{display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;
  padding:24px 6px;border-bottom:1px solid rgba(239,229,207,.2);transition:.35s var(--ease)}
.contact-row:hover{padding-inline:18px;background:rgba(239,229,207,.05)}
.c-name{font-size:15px;color:var(--on-dark-soft)}
.c-mail{font-family:var(--serif);font-size:20px;color:var(--gold-2)}
.contact-row:hover .c-mail{color:#fff}

/* ---------- footer ---------- */
.footer{background:var(--bark);color:var(--on-dark-soft);padding:40px 0;border-top:1px solid var(--line-d)}
.footer-inner{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.foot-wm{font-family:var(--roman);font-size:18px;letter-spacing:.32em;color:var(--gold-2)}
.foot-mid{font-size:12.5px;color:var(--on-dark-soft)}
.foot-note{margin-left:auto;font-size:12px;color:rgba(239,229,207,.4)}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .hero{padding:108px 0 0}
  .section{padding:84px 0}
  .hero-foot{grid-template-columns:1fr 1fr;gap:24px 18px}
  .method-grid{grid-template-columns:1fr}
  .method-card{border-right:0!important}
  .team-grid{grid-template-columns:1fr}
}
@media (max-width:680px){
  .shell{width:calc(100% - 38px)}
  .topbar-inner{min-height:66px;gap:12px}
  .brand-zh{display:none}
  .nav{gap:16px}
  .nav>a{display:none}
  .nav .lang-toggle{display:inline-block}
  .hero{padding:80px 0 0}
  .hero-lead{font-size:16px}
  .hero-actions{gap:12px}
  .btn-gold,.btn-ghost{padding:14px 22px;font-size:12px}
  .hero-foot{grid-template-columns:1fr 1fr;padding:26px 0 36px}
  .hero-foot b{font-size:27px}
  .entry-link{grid-template-columns:46px minmax(0,1fr);gap:12px;padding:26px 4px}
  .entry-arrow{display:none}
  .filters{gap:18px;overflow-x:auto}
  .footer-inner{flex-direction:column;align-items:flex-start;gap:10px}
  .foot-note{margin-left:0}
}