/* ============================================================
   HJJ / 见远而行 — Site shell & components
   depends on tokens.css
   ============================================================ */

a { color: inherit; }

/* ---------------- layout primitives ---------------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding-left: var(--pad); padding-right: var(--pad); }
.section { padding-top: clamp(72px, 11vw, 140px); padding-bottom: clamp(72px, 11vw, 140px); }
.divline { height: 1px; background: var(--line); width: 100%; }

/* mono kicker */
.kicker { font-family: var(--mono); font-size: 11.5px; font-weight: 500; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--text-3); display: inline-flex; align-items: center; gap: 10px; }
.kicker::before { content: ""; width: 22px; height: 1px; background: var(--line-strong); display: inline-block; }
.kicker.center::after { content: ""; width: 22px; height: 1px; background: var(--line-strong); display: inline-block; }

/* headings */
.h-sec { font-size: clamp(28px, 4vw, 40px); font-weight: 600; letter-spacing: -0.02em; line-height: 1.08; margin: 18px 0 0; }
.lead { color: var(--text-2); font-size: clamp(15px, 1.4vw, 17px); line-height: 1.7; max-width: 56ch; margin: 16px 0 0; }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 9px; font-size: 14px; padding: 11px 20px;
  border-radius: 999px; text-decoration: none; white-space: nowrap; flex: none; transition: .25s var(--ease); cursor: pointer; }
.btn .ar { transition: transform .3s var(--ease); }
.btn:hover .ar { transform: translateX(3px); }
.btn-pri { background: var(--accent); color: var(--on-accent); font-weight: 500; border: 1px solid var(--accent); }
.btn-pri:hover { background: var(--accent-soft); }
.btn-sec { color: var(--text); border: 1px solid var(--line-2); }
.btn-sec:hover { border-color: var(--line-strong); background: var(--surface); }
.btn-sec .ar { color: var(--text-3); }
.btn-sec:hover .ar { color: var(--signal); }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 6px; }

/* ---------------- nav ---------------- */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px var(--pad); transition: background .3s, border-color .3s, padding .3s; border-bottom: 1px solid transparent; }
.nav.scrolled { background: rgba(8,9,11,0.72); backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px); border-bottom-color: var(--line); padding-top: 14px; padding-bottom: 14px; }
.nav .brand { display: flex; align-items: baseline; gap: 11px; text-decoration: none; }
.nav .brand .mk { font-family: var(--mono); font-weight: 600; font-size: 15px; letter-spacing: 0.16em; color: var(--text); }
.nav .brand .cn { font-size: 14px; color: var(--text-3); letter-spacing: 0.04em; }
.nav .brand:hover .cn { color: var(--text-2); }
.navlinks { display: flex; gap: 4px; }
.navlinks a { color: var(--text-2); text-decoration: none; font-size: 14px; padding: 7px 13px; border-radius: 8px;
  white-space: nowrap; transition: color .2s, background .2s; }
.navlinks a:hover { color: var(--text); }
.navlinks a.active { color: var(--text); position: relative; }
.navlinks a.active::after { content: ""; position: absolute; left: 13px; right: 13px; bottom: 1px; height: 1px; background: var(--signal); box-shadow: 0 0 8px var(--signal-glow); }
.nav-right { display: flex; align-items: center; gap: 18px; }
.navcta { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; color: var(--text-2);
  border: 1px solid var(--line-2); padding: 8px 15px; border-radius: 999px; text-decoration: none; transition: .2s; white-space: nowrap; }
.navcta:hover { border-color: var(--line-strong); color: var(--text); }
.menu-btn { display: none; background: none; border: 1px solid var(--line-2); border-radius: 8px; width: 38px; height: 36px;
  cursor: pointer; color: var(--text); align-items: center; justify-content: center; }
.menu-btn svg { width: 18px; height: 18px; }

/* mobile drawer */
.drawer { position: fixed; inset: 0; z-index: 99; background: rgba(8,9,11,0.96); backdrop-filter: blur(12px);
  display: flex; flex-direction: column; justify-content: center; gap: 6px; padding: 0 var(--pad);
  opacity: 0; pointer-events: none; transition: opacity .3s; }
.drawer.open { opacity: 1; pointer-events: auto; }
.drawer a { color: var(--text-2); text-decoration: none; font-size: 30px; font-weight: 500; padding: 12px 0; border-bottom: 1px solid var(--line); }
.drawer a.active { color: var(--text); }

/* ---------------- shared page header (inner pages) ---------------- */
.phead { position: relative; padding-top: 150px; padding-bottom: clamp(48px, 8vw, 96px); overflow: hidden; }
.phead .floor { position: absolute; left: 50%; bottom: -2px; width: 320%; height: 78%;
  transform: translateX(-50%) perspective(640px) rotateX(76deg); transform-origin: bottom center;
  background-image: linear-gradient(to right, var(--line) 1px, transparent 1px), linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 60px 60px; -webkit-mask-image: linear-gradient(to top, #000, transparent 80%); mask-image: linear-gradient(to top, #000, transparent 80%); opacity: .8; }
.phead .horizon { position: absolute; left: 0; right: 0; bottom: 28%; height: 1px;
  background: linear-gradient(to right, transparent, var(--line-2) 28%, var(--signal) 50%, var(--line-2) 72%, transparent); }
.phead .glow { position: absolute; pointer-events: none; width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, var(--signal-dim), transparent 65%); transform: translate(-50%, -50%); transition: opacity .4s; opacity: 0; }
.phead-inner { position: relative; z-index: 2; }
.phead h1 { font-size: clamp(40px, 6.5vw, 76px); font-weight: 600; letter-spacing: -0.025em; line-height: 1.02; margin: 22px 0 0; }
.phead h1 .grey { color: var(--text-3); }
.phead .en { font-family: var(--mono); font-size: 13px; letter-spacing: 0.26em; color: var(--text-3); text-transform: uppercase; margin-top: 16px; }
.phead .desc { color: var(--text-2); font-size: clamp(15px, 1.5vw, 18px); line-height: 1.7; max-width: 60ch; margin: 26px 0 0; }

/* ---------------- index list rows ---------------- */
.rows { border-top: 1px solid var(--line); }
.row { display: grid; grid-template-columns: 64px 1fr auto; gap: 28px; align-items: center;
  padding: 30px 8px; border-bottom: 1px solid var(--line); text-decoration: none; position: relative; transition: .3s var(--ease); }
.row::after { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 0; background: var(--surface); z-index: -1; transition: width .35s var(--ease); }
.row:hover { padding-left: 22px; }
.row:hover::after { width: 100%; left: -16px; right: -16px; width: calc(100% + 32px); border-radius: 12px; }
.row .idx { font-family: var(--mono); font-size: 13px; color: var(--text-4); letter-spacing: .1em; }
.row:hover .idx { color: var(--text-2); }
.row .rtitle { display: flex; flex-direction: column; gap: 7px; }
.row .rtitle .t { font-size: clamp(18px, 2vw, 24px); font-weight: 500; letter-spacing: -0.015em; }
.row .rtitle .t .en { color: var(--text-3); font-weight: 400; font-size: 0.8em; margin-left: 10px; }
.row .rtitle .d { color: var(--text-2); font-size: 14.5px; max-width: 64ch; line-height: 1.6; }
.row .rmeta { display: flex; align-items: center; gap: 22px; }
.row .arl { color: var(--text-4); font-size: 20px; transition: .3s var(--ease); }
.row:hover .arl { color: var(--signal); transform: translateX(4px); }
.card:hover .arl { color: var(--signal) !important; }

/* tags */
.tags { display: flex; flex-wrap: wrap; gap: 7px; }
.tag { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.08em; color: var(--text-3);
  border: 1px solid var(--line); border-radius: 999px; padding: 4px 10px; white-space: nowrap; }
.stage { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 7px; color: var(--text-2); }
.stage .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--text-3); }
.stage.live { color: var(--signal-2); }
.stage.live .dot { background: var(--signal); box-shadow: 0 0 10px var(--signal-glow); animation: pulse 2.4s var(--ease) infinite; }
@keyframes pulse { 0%,100% { box-shadow: 0 0 8px var(--signal-glow); } 50% { box-shadow: 0 0 14px var(--signal-glow); } }

/* ---------------- cards ---------------- */
.grid { display: grid; gap: 18px; }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.card { position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 28px; text-decoration: none; display: flex; flex-direction: column; gap: 14px; transition: .3s var(--ease); overflow: hidden; }
.card:hover { border-color: var(--line-2); background: var(--surface-2); transform: translateY(-3px); }
.card .c-top { display: flex; align-items: center; justify-content: space-between; }
.card .c-idx { font-family: var(--mono); font-size: 12px; color: var(--text-4); letter-spacing: .1em; }
.card .c-title { font-size: 20px; font-weight: 500; letter-spacing: -0.015em; margin: 4px 0 0; }
.card .c-en { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-3); }
.card .c-desc { color: var(--text-2); font-size: 14.5px; line-height: 1.62; flex: 1; }
.card .c-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 6px; }

/* ---------------- footer ---------------- */
.footer { position: relative; border-top: 1px solid var(--line); padding-top: clamp(64px, 9vw, 110px); padding-bottom: 40px; overflow: hidden; }
.foot-word { font-size: clamp(56px, 16vw, 220px); font-weight: 600; letter-spacing: -0.03em; line-height: 0.9;
  color: transparent; -webkit-text-stroke: 1px var(--line-2); margin: 0; user-select: none; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; margin-bottom: 64px; }
.foot-col h4 { font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-4); margin: 0 0 16px; font-weight: 500; }
.foot-col a { display: block; color: var(--text-2); text-decoration: none; font-size: 15px; padding: 6px 0; transition: color .2s; }
.foot-col a:hover { color: var(--text); }
.foot-col .blurb { color: var(--text-2); font-size: 14.5px; line-height: 1.65; max-width: 38ch; }
.foot-bar { display: flex; align-items: center; justify-content: space-between; padding-top: 26px; border-top: 1px solid var(--line); margin-top: 16px; }
.foot-bar span { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; color: var(--text-4); }

/* ---------------- reveal animation ---------------- */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(22px); transition: opacity .8s var(--ease-out), transform .8s var(--ease-out); }
  .reveal.in { opacity: 1; transform: none; }
  .reveal[data-d="1"] { transition-delay: .07s; }
  .reveal[data-d="2"] { transition-delay: .14s; }
  .reveal[data-d="3"] { transition-delay: .21s; }
  .reveal[data-d="4"] { transition-delay: .28s; }
}

/* ---------------- responsive ---------------- */
@media (max-width: 880px) {
  .navlinks, .nav-right .navcta { display: none; }
  .menu-btn { display: inline-flex; }
  .g-2, .g-3 { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; gap: 30px; }
  .row { grid-template-columns: 40px 1fr; }
  .row .rmeta { grid-column: 2; justify-content: flex-start; margin-top: 4px; }
}